loncom/lond - view - 1.489.2.43.2.9

File: [LON-CAPA] / loncom / lond
Revision 1.489.2.43.2.9: download - view: text, annotated - select for diffs
Mon Jul 10 00:54:42 2023 UTC (9 months, 3 weeks ago) by raeburn
Branches: version_2_11_4_msu

- For 2.11.4 (modified)
  Typo in comments

1: #!/usr/bin/perl 2: # The LearningOnline Network 3: # lond "LON Daemon" Server (port "LOND" 5663) 4: # 5: # $Id: lond,v 1.489.2.43.2.9 2023/07/10 00:54:42 raeburn Exp $ 6: # 7: # Copyright Michigan State University Board of Trustees 8: # 9: # This file is part of the LearningOnline Network with CAPA (LON-CAPA). 10: # 11: # LON-CAPA is free software; you can redistribute it and/or modify 12: # it under the terms of the GNU General Public License as published by 13: # the Free Software Foundation; either version 2 of the License, or 14: # (at your option) any later version. 15: # 16: # LON-CAPA is distributed in the hope that it will be useful, 17: # but WITHOUT ANY WARRANTY; without even the implied warranty of 18: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 19: # GNU General Public License for more details. 20: # 21: # You should have received a copy of the GNU General Public License 22: # along with LON-CAPA; if not, write to the Free Software 23: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 24: # 25: # /home/httpd/html/adm/gpl.txt 26: # 27: 28: 29: # http://www.lon-capa.org/ 30: # 31: 32: use strict; 33: use lib '/home/httpd/lib/perl/'; 34: use LONCAPA; 35: use LONCAPA::Configuration; 36: use LONCAPA::Lond; 37: 38: use IO::Socket; 39: use IO::File; 40: #use Apache::File; 41: use POSIX; 42: use Crypt::IDEA; 43: use LWP::UserAgent(); 44: use Digest::MD5 qw(md5_hex); 45: use GDBM_File; 46: use Authen::Krb5; 47: use localauth; 48: use localenroll; 49: use localstudentphoto; 50: use File::Copy; 51: use File::Find; 52: use LONCAPA::lonlocal; 53: use LONCAPA::lonssl; 54: use Fcntl qw(:flock); 55: use Apache::lonnet; 56: use Mail::Send; 57: use Crypt::Eksblowfish::Bcrypt; 58: use Digest::SHA; 59: use Encode; 60: 61: my $DEBUG = 0; # Non zero to enable debug log entries. 62: 63: my $status=''; 64: my $lastlog=''; 65: 66: my $VERSION='$Revision: 1.489.2.43.2.9 $'; #' stupid emacs 67: my $remoteVERSION; 68: my $currenthostid="default"; 69: my $currentdomainid; 70: 71: my $client; 72: my $clientip; # IP address of client. 73: my $clientname; # LonCAPA name of client. 74: my $clientversion; # LonCAPA version running on client. 75: my $clienthomedom; # LonCAPA domain of homeID for client. 76: # primary library server. 77: 78: my $server; 79: 80: my $keymode; 81: 82: my $cipher; # Cipher key negotiated with client 83: my $tmpsnum = 0; # Id of tmpputs. 84: 85: # 86: # Connection type is: 87: # client - All client actions are allowed 88: # manager - only management functions allowed. 89: # both - Both management and client actions are allowed 90: # 91: 92: my $ConnectionType; 93: 94: my %managers; # Ip -> manager names 95: 96: my %perlvar; # Will have the apache conf defined perl vars. 97: 98: my $dist; 99: 100: # 101: # The hash below is used for command dispatching, and is therefore keyed on the request keyword. 102: # Each element of the hash contains a reference to an array that contains: 103: # A reference to a sub that executes the request corresponding to the keyword. 104: # A flag that is true if the request must be encoded to be acceptable. 105: # A mask with bits as follows: 106: # CLIENT_OK - Set when the function is allowed by ordinary clients 107: # MANAGER_OK - Set when the function is allowed to manager clients. 108: # 109: my $CLIENT_OK = 1; 110: my $MANAGER_OK = 2; 111: my %Dispatcher; 112: 113: 114: # 115: # The array below are password error strings." 116: # 117: my $lastpwderror = 13; # Largest error number from lcpasswd. 118: my @passwderrors = ("ok", 119: "pwchange_failure - lcpasswd must be run as user 'www'", 120: "pwchange_failure - lcpasswd got incorrect number of arguments", 121: "pwchange_failure - lcpasswd did not get the right nubmer of input text lines", 122: "pwchange_failure - lcpasswd too many simultaneous pwd changes in progress", 123: "pwchange_failure - lcpasswd User does not exist.", 124: "pwchange_failure - lcpasswd Incorrect current passwd", 125: "pwchange_failure - lcpasswd Unable to su to root.", 126: "pwchange_failure - lcpasswd Cannot set new passwd.", 127: "pwchange_failure - lcpasswd Username has invalid characters", 128: "pwchange_failure - lcpasswd Invalid characters in password", 129: "pwchange_failure - lcpasswd User already exists", 130: "pwchange_failure - lcpasswd Something went wrong with user addition.", 131: "pwchange_failure - lcpasswd Password mismatch", 132: "pwchange_failure - lcpasswd Error filename is invalid"); 133: 134: 135: # This array are the errors from lcinstallfile: 136: 137: my @installerrors = ("ok", 138: "Initial user id of client not that of www", 139: "Usage error, not enough command line arguments", 140: "Source filename does not exist", 141: "Destination filename does not exist", 142: "Some file operation failed", 143: "Invalid table filename." 144: ); 145: 146: # 147: # Statistics that are maintained and dislayed in the status line. 148: # 149: my $Transactions = 0; # Number of attempted transactions. 150: my $Failures = 0; # Number of transcations failed. 151: 152: # ResetStatistics: 153: # Resets the statistics counters: 154: # 155: sub ResetStatistics { 156: $Transactions = 0; 157: $Failures = 0; 158: } 159: 160: #------------------------------------------------------------------------ 161: # 162: # LocalConnection 163: # Completes the formation of a locally authenticated connection. 164: # This function will ensure that the 'remote' client is really the 165: # local host. If not, the connection is closed, and the function fails. 166: # If so, initcmd is parsed for the name of a file containing the 167: # IDEA session key. The fie is opened, read, deleted and the session 168: # key returned to the caller. 169: # 170: # Parameters: 171: # $Socket - Socket open on client. 172: # $initcmd - The full text of the init command. 173: # 174: # Returns: 175: # IDEA session key on success. 176: # undef on failure. 177: # 178: sub LocalConnection { 179: my ($Socket, $initcmd) = @_; 180: Debug("Attempting local connection: $initcmd client: $clientip"); 181: if($clientip ne "127.0.0.1") { 182: &logthis(' LocalConnection rejecting non local: ' 183: ."$clientip ne 127.0.0.1 "); 184: close $Socket; 185: return undef; 186: } else { 187: chomp($initcmd); # Get rid of \n in filename. 188: my ($init, $type, $name) = split(/:/, $initcmd); 189: Debug(" Init command: $init $type $name "); 190: 191: # Require that $init = init, and $type = local: Otherwise 192: # the caller is insane: 193: 194: if(($init ne "init") && ($type ne "local")) { 195: &logthis(' LocalConnection: caller is insane! ' 196: ."init = $init, and type = $type "); 197: close($Socket);; 198: return undef; 199: 200: } 201: # Now get the key filename: 202: 203: my $IDEAKey = lonlocal::ReadKeyFile($name); 204: return $IDEAKey; 205: } 206: } 207: #------------------------------------------------------------------------------ 208: # 209: # SSLConnection 210: # Completes the formation of an ssh authenticated connection. The 211: # socket is promoted to an ssl socket. If this promotion and the associated 212: # certificate exchange are successful, the IDEA key is generated and sent 213: # to the remote peer via the SSL tunnel. The IDEA key is also returned to 214: # the caller after the SSL tunnel is torn down. 215: # 216: # Parameters: 217: # Name Type Purpose 218: # $Socket IO::Socket::INET Plaintext socket. 219: # 220: # Returns: 221: # IDEA key on success. 222: # undef on failure. 223: # 224: sub SSLConnection { 225: my $Socket = shift; 226: 227: Debug("SSLConnection: "); 228: my $KeyFile = lonssl::KeyFile(); 229: if(!$KeyFile) { 230: my $err = lonssl::LastError(); 231: &logthis(" CRITICAL" 232: ."Can't get key file $err "); 233: return undef; 234: } 235: my ($CACertificate, 236: $Certificate) = lonssl::CertificateFile(); 237: 238: 239: # If any of the key, certificate or certificate authority 240: # certificate filenames are not defined, this can't work. 241: 242: if((!$Certificate) || (!$CACertificate)) { 243: my $err = lonssl::LastError(); 244: &logthis(" CRITICAL" 245: ."Can't get certificates: $err "); 246: 247: return undef; 248: } 249: Debug("Key: $KeyFile CA: $CACertificate Cert: $Certificate"); 250: 251: # Indicate to our peer that we can procede with 252: # a transition to ssl authentication: 253: 254: print $Socket "ok:ssl\n"; 255: 256: Debug("Approving promotion -> ssl"); 257: # And do so: 258: 259: my $SSLSocket = lonssl::PromoteServerSocket($Socket, 260: $CACertificate, 261: $Certificate, 262: $KeyFile); 263: if(! ($SSLSocket) ) { # SSL socket promotion failed. 264: my $err = lonssl::LastError(); 265: &logthis(" CRITICAL " 266: ."SSL Socket promotion failed: $err "); 267: return undef; 268: } 269: Debug("SSL Promotion successful"); 270: 271: # 272: # The only thing we'll use the socket for is to send the IDEA key 273: # to the peer: 274: 275: my $Key = lonlocal::CreateCipherKey(); 276: print $SSLSocket "$Key\n"; 277: 278: lonssl::Close($SSLSocket); 279: 280: Debug("Key exchange complete: $Key"); 281: 282: return $Key; 283: } 284: # 285: # InsecureConnection: 286: # If insecure connections are allowd, 287: # exchange a challenge with the client to 'validate' the 288: # client (not really, but that's the protocol): 289: # We produce a challenge string that's sent to the client. 290: # The client must then echo the challenge verbatim to us. 291: # 292: # Parameter: 293: # Socket - Socket open on the client. 294: # Returns: 295: # 1 - success. 296: # 0 - failure (e.g.mismatch or insecure not allowed). 297: # 298: sub InsecureConnection { 299: my $Socket = shift; 300: 301: # Don't even start if insecure connections are not allowed. 302: 303: if(! $perlvar{londAllowInsecure}) { # Insecure connections not allowed. 304: return 0; 305: } 306: 307: # Fabricate a challenge string and send it.. 308: 309: my $challenge = "$$".time; # pid + time. 310: print $Socket "$challenge\n"; 311: &status("Waiting for challenge reply"); 312: 313: my $answer = <$Socket>; 314: $answer =~s/\W//g; 315: if($challenge eq $answer) { 316: return 1; 317: } else { 318: logthis("WARNING client did not respond to challenge"); 319: &status("No challenge reqply"); 320: return 0; 321: } 322: 323: 324: } 325: # 326: # Safely execute a command (as long as it's not a shel command and doesn 327: # not require/rely on shell escapes. The function operates by doing a 328: # a pipe based fork and capturing stdout and stderr from the pipe. 329: # 330: # Formal Parameters: 331: # $line - A line of text to be executed as a command. 332: # Returns: 333: # The output from that command. If the output is multiline the caller 334: # must know how to split up the output. 335: # 336: # 337: sub execute_command { 338: my ($line) = @_; 339: my @words = split(/\s/, $line); # Bust the command up into words. 340: my $output = ""; 341: 342: my $pid = open(CHILD, "-|"); 343: 344: if($pid) { # Parent process 345: Debug("In parent process for execute_command"); 346: my @data = <CHILD>; # Read the child's outupt... 347: close CHILD; 348: foreach my $output_line (@data) { 349: Debug("Adding $output_line"); 350: $output .= $output_line; # Presumably has a \n on it. 351: } 352: 353: } else { # Child process 354: close (STDERR); 355: open (STDERR, ">&STDOUT");# Combine stderr, and stdout... 356: exec(@words); # won't return. 357: } 358: return $output; 359: } 360: 361: 362: # GetCertificate: Given a transaction that requires a certificate, 363: # this function will extract the certificate from the transaction 364: # request. Note that at this point, the only concept of a certificate 365: # is the hostname to which we are connected. 366: # 367: # Parameter: 368: # request - The request sent by our client (this parameterization may 369: # need to change when we really use a certificate granting 370: # authority. 371: # 372: sub GetCertificate { 373: my $request = shift; 374: 375: return $clientip; 376: } 377: 378: # 379: # Return true if client is a manager. 380: # 381: sub isManager { 382: return (($ConnectionType eq "manager") || ($ConnectionType eq "both")); 383: } 384: # 385: # Return tru if client can do client functions 386: # 387: sub isClient { 388: return (($ConnectionType eq "client") || ($ConnectionType eq "both")); 389: } 390: 391: 392: # 393: # ReadManagerTable: Reads in the current manager table. For now this is 394: # done on each manager authentication because: 395: # - These authentications are not frequent 396: # - This allows dynamic changes to the manager table 397: # without the need to signal to the lond. 398: # 399: sub ReadManagerTable { 400: 401: &Debug("Reading manager table"); 402: # Clean out the old table first.. 403: 404: foreach my $key (keys %managers) { 405: delete $managers{$key}; 406: } 407: 408: my $tablename = $perlvar{'lonTabDir'}."/managers.tab"; 409: if (!open (MANAGERS, $tablename)) { 410: my $hostname = &Apache::lonnet::hostname($perlvar{'lonHostID'}); 411: if (&Apache::lonnet::is_LC_dns($hostname)) { 412: &logthis('No manager table. Nobody can manage!!'); 413: } 414: return; 415: } 416: while(my $host = <MANAGERS>) { 417: chomp($host); 418: if ($host =~ "^#") { # Comment line. 419: next; 420: } 421: if (!defined &Apache::lonnet::get_host_ip($host)) { # This is a non cluster member 422: # The entry is of the form: 423: # cluname:hostname 424: # cluname - A 'cluster hostname' is needed in order to negotiate 425: # the host key. 426: # hostname- The dns name of the host. 427: # 428: my($cluname, $dnsname) = split(/:/, $host); 429: 430: my $ip = gethostbyname($dnsname); 431: if(defined($ip)) { # bad names don't deserve entry. 432: my $hostip = inet_ntoa($ip); 433: $managers{$hostip} = $cluname; 434: logthis(' registering manager '. 435: "$dnsname as $cluname with $hostip \n"); 436: } 437: } else { 438: logthis(' existing host'." $host\n"); 439: $managers{&Apache::lonnet::get_host_ip($host)} = $host; # Use info from cluster tab if cluster memeber 440: } 441: } 442: } 443: 444: # 445: # ValidManager: Determines if a given certificate represents a valid manager. 446: # in this primitive implementation, the 'certificate' is 447: # just the connecting loncapa client name. This is checked 448: # against a valid client list in the configuration. 449: # 450: # 451: sub ValidManager { 452: my $certificate = shift; 453: 454: return isManager; 455: } 456: # 457: # CopyFile: Called as part of the process of installing a 458: # new configuration file. This function copies an existing 459: # file to a backup file. 460: # Parameters: 461: # oldfile - Name of the file to backup. 462: # newfile - Name of the backup file. 463: # Return: 464: # 0 - Failure (errno has failure reason). 465: # 1 - Success. 466: # 467: sub CopyFile { 468: 469: my ($oldfile, $newfile) = @_; 470: 471: if (! copy($oldfile,$newfile)) { 472: return 0; 473: } 474: chmod(0660, $newfile); 475: return 1; 476: } 477: # 478: # Host files are passed out with externally visible host IPs. 479: # If, for example, we are behind a fire-wall or NAT host, our 480: # internally visible IP may be different than the externally 481: # visible IP. Therefore, we always adjust the contents of the 482: # host file so that the entry for ME is the IP that we believe 483: # we have. At present, this is defined as the entry that 484: # DNS has for us. If by some chance we are not able to get a 485: # DNS translation for us, then we assume that the host.tab file 486: # is correct. 487: # BUGBUGBUG - in the future, we really should see if we can 488: # easily query the interface(s) instead. 489: # Parameter(s): 490: # contents - The contents of the host.tab to check. 491: # Returns: 492: # newcontents - The adjusted contents. 493: # 494: # 495: sub AdjustHostContents { 496: my $contents = shift; 497: my $adjusted; 498: my $me = $perlvar{'lonHostID'}; 499: 500: foreach my $line (split(/\n/,$contents)) { 501: if(!(($line eq "") || ($line =~ /^ *\#/) || ($line =~ /^ *$/) || 502: ($line =~ /^\s*\^/))) { 503: chomp($line); 504: my ($id,$domain,$role,$name,$ip,$maxcon,$idleto,$mincon)=split(/:/,$line); 505: if ($id eq $me) { 506: my $ip = gethostbyname($name); 507: my $ipnew = inet_ntoa($ip); 508: $ip = $ipnew; 509: # Reconstruct the host line and append to adjusted: 510: 511: my $newline = "$id:$domain:$role:$name:$ip"; 512: if($maxcon ne "") { # Not all hosts have loncnew tuning params 513: $newline .= ":$maxcon:$idleto:$mincon"; 514: } 515: $adjusted .= $newline."\n"; 516: 517: } else { # Not me, pass unmodified. 518: $adjusted .= $line."\n"; 519: } 520: } else { # Blank or comment never re-written. 521: $adjusted .= $line."\n"; # Pass blanks and comments as is. 522: } 523: } 524: return $adjusted; 525: } 526: # 527: # InstallFile: Called to install an administrative file: 528: # - The file is created int a temp directory called <name>.tmp 529: # - lcinstall file is called to install the file. 530: # since the web app has no direct write access to the table directory 531: # 532: # Parameters: 533: # Name of the file 534: # File Contents. 535: # Return: 536: # nonzero - success. 537: # 0 - failure and $! has an errno. 538: # Assumptions: 539: # File installtion is a relatively infrequent 540: # 541: sub InstallFile { 542: 543: my ($Filename, $Contents) = @_; 544: # my $TempFile = $Filename.".tmp"; 545: my $exedir = $perlvar{'lonDaemons'}; 546: my $tmpdir = $exedir.'/tmp/'; 547: my $TempFile = $tmpdir."TempTableFile.tmp"; 548: 549: # Open the file for write: 550: 551: my $fh = IO::File->new("> $TempFile"); # Write to temp. 552: if(!(defined $fh)) { 553: &logthis(' Unable to create '.$TempFile.""); 554: return 0; 555: } 556: # write the contents of the file: 557: 558: print $fh ($Contents); 559: $fh->close; # In case we ever have a filesystem w. locking 560: 561: chmod(0664, $TempFile); # Everyone can write it. 562: 563: # Use lcinstall file to put the file in the table directory... 564: 565: &Debug("Opening pipe to $exedir/lcinstallfile $TempFile $Filename"); 566: my $pf = IO::File->new("| $exedir/lcinstallfile $TempFile $Filename > $exedir/logs/lcinstallfile.log"); 567: close $pf; 568: my $err = $?; 569: &Debug("Status is $err"); 570: if ($err != 0) { 571: my $msg = $err; 572: if ($err < @installerrors) { 573: $msg = $installerrors[$err]; 574: } 575: &logthis("Install failed for table file $Filename : $msg"); 576: return 0; 577: } 578: 579: # Remove the temp file: 580: 581: unlink($TempFile); 582: 583: return 1; 584: } 585: 586: 587: # 588: # ConfigFileFromSelector: converts a configuration file selector 589: # into a configuration file pathname. 590: # Supports the following file selectors: 591: # hosts, domain, dns_hosts, dns_domain 592: # 593: # 594: # Parameters: 595: # selector - Configuration file selector. 596: # Returns: 597: # Full path to the file or undef if the selector is invalid. 598: # 599: sub ConfigFileFromSelector { 600: my $selector = shift; 601: my $tablefile; 602: 603: my $tabledir = $perlvar{'lonTabDir'}.'/'; 604: if (($selector eq "hosts") || ($selector eq "domain") || 605: ($selector eq "dns_hosts") || ($selector eq "dns_domain")) { 606: $tablefile = $tabledir.$selector.'.tab'; 607: } 608: return $tablefile; 609: } 610: # 611: # PushFile: Called to do an administrative push of a file. 612: # - Ensure the file being pushed is one we support. 613: # - Backup the old file to <filename.saved> 614: # - Separate the contents of the new file out from the 615: # rest of the request. 616: # - Write the new file. 617: # Parameter: 618: # Request - The entire user request. This consists of a : separated 619: # string pushfile:tablename:contents. 620: # NOTE: The contents may have :'s in it as well making things a bit 621: # more interesting... but not much. 622: # Returns: 623: # String to send to client ("ok" or "refused" if bad file). 624: # 625: sub PushFile { 626: my $request = shift; 627: my ($command, $filename, $contents) = split(":", $request, 3); 628: &Debug("PushFile"); 629: 630: # At this point in time, pushes for only the following tables are 631: # supported: 632: # hosts.tab ($filename eq host). 633: # domain.tab ($filename eq domain). 634: # dns_hosts.tab ($filename eq dns_host). 635: # dns_domain.tab ($filename eq dns_domain). 636: # Construct the destination filename or reject the request. 637: # 638: # lonManage is supposed to ensure this, however this session could be 639: # part of some elaborate spoof that managed somehow to authenticate. 640: # 641: 642: 643: my $tablefile = ConfigFileFromSelector($filename); 644: if(! (defined $tablefile)) { 645: return "refused"; 646: } 647: 648: # If the file being pushed is the host file, we adjust the entry for ourself so that the 649: # IP will be our current IP as looked up in dns. Note this is only 99% good as it's possible 650: # to conceive of conditions where we don't have a DNS entry locally. This is possible in a 651: # network sense but it doesn't make much sense in a LonCAPA sense so we ignore (for now) 652: # that possibilty. 653: 654: if($filename eq "host") { 655: $contents = AdjustHostContents($contents); 656: } elsif (($filename eq 'dns_hosts') || ($filename eq 'dns_domain')) { 657: if ($contents eq '') { 658: &logthis(' Pushfile: unable to install ' 659: .$tablefile." - no data received from push. "); 660: return 'error: push had no data'; 661: } 662: if (&Apache::lonnet::get_host_ip($clientname)) { 663: my $clienthost = &Apache::lonnet::hostname($clientname); 664: if ($managers{$clientip} eq $clientname) { 665: my $clientprotocol = $Apache::lonnet::protocol{$clientname}; 666: $clientprotocol = 'http' if ($clientprotocol ne 'https'); 667: my $url = '/adm/'.$filename; 668: $url =~ s{_}{/}; 669: my $ua=new LWP::UserAgent; 670: $ua->timeout(60); 671: my $request=new HTTP::Request('GET',"$clientprotocol://$clienthost$url"); 672: my $response=$ua->request($request); 673: if ($response->is_error()) { 674: &logthis(' Pushfile: unable to install ' 675: .$tablefile." - error attempting to pull data. "); 676: return 'error: pull failed'; 677: } else { 678: my $result = $response->content; 679: chomp($result); 680: unless ($result eq $contents) { 681: &logthis(' Pushfile: unable to install ' 682: .$tablefile." - pushed data and pulled data differ. "); 683: my $pushleng = length($contents); 684: my $pullleng = length($result); 685: if ($pushleng != $pullleng) { 686: return "error: $pushleng vs $pullleng bytes"; 687: } else { 688: return "error: mismatch push and pull"; 689: } 690: } 691: } 692: } 693: } 694: } 695: 696: # Install the new file: 697: 698: &logthis("Installing new $tablefile contents:\n$contents"); 699: if(!InstallFile($tablefile, $contents)) { 700: &logthis(' Pushfile: unable to install ' 701: .$tablefile." $! "); 702: return "error:$!"; 703: } else { 704: &logthis(' Installed new '.$tablefile 705: ." - transaction by: $clientname ($clientip)"); 706: my $adminmail = $perlvar{'lonAdmEMail'}; 707: my $admindom = &Apache::lonnet::host_domain($perlvar{'lonHostID'}); 708: if ($admindom ne '') { 709: my %domconfig = 710: &Apache::lonnet::get_dom('configuration',['contacts'],$admindom); 711: if (ref($domconfig{'contacts'}) eq 'HASH') { 712: if ($domconfig{'contacts'}{'adminemail'} ne '') { 713: $adminmail = $domconfig{'contacts'}{'adminemail'}; 714: } 715: } 716: } 717: if ($adminmail =~ /^[^\@]+\@[^\@]+$/) { 718: my $msg = new Mail::Send; 719: $msg->to($adminmail); 720: $msg->subject('LON-CAPA DNS update on '.$perlvar{'lonHostID'}); 721: $msg->add('Content-type','text/plain; charset=UTF-8'); 722: if (my $fh = $msg->open()) { 723: print $fh 'Update to '.$tablefile.' from Cluster Manager '. 724: "$clientname ($clientip)\n"; 725: $fh->close; 726: } 727: } 728: } 729: 730: # Indicate success: 731: 732: return "ok"; 733: 734: } 735: 736: # 737: # Called to re-init either lonc or lond. 738: # 739: # Parameters: 740: # request - The full request by the client. This is of the form 741: # reinit:<process> 742: # where <process> is allowed to be either of 743: # lonc or lond 744: # 745: # Returns: 746: # The string to be sent back to the client either: 747: # ok - Everything worked just fine. 748: # error:why - There was a failure and why describes the reason. 749: # 750: # 751: sub ReinitProcess { 752: my $request = shift; 753: 754: 755: # separate the request (reinit) from the process identifier and 756: # validate it producing the name of the .pid file for the process. 757: # 758: # 759: my ($junk, $process) = split(":", $request); 760: my $processpidfile = $perlvar{'lonDaemons'}.'/logs/'; 761: if($process eq 'lonc') { 762: $processpidfile = $processpidfile."lonc.pid"; 763: if (!open(PIDFILE, "< $processpidfile")) { 764: return "error:Open failed for $processpidfile"; 765: } 766: my $loncpid = <PIDFILE>; 767: close(PIDFILE); 768: logthis(' Reinitializing lonc pid='.$loncpid 769: .""); 770: kill("USR2", $loncpid); 771: } elsif ($process eq 'lond') { 772: logthis(' Reinitializing self (lond) '); 773: &UpdateHosts; # Lond is us!! 774: } else { 775: &logthis('"); 777: return "error:Invalid process identifier $process"; 778: } 779: return 'ok'; 780: } 781: # Validate a line in a configuration file edit script: 782: # Validation includes: 783: # - Ensuring the command is valid. 784: # - Ensuring the command has sufficient parameters 785: # Parameters: 786: # scriptline - A line to validate (\n has been stripped for what it's worth). 787: # 788: # Return: 789: # 0 - Invalid scriptline. 790: # 1 - Valid scriptline 791: # NOTE: 792: # Only the command syntax is checked, not the executability of the 793: # command. 794: # 795: sub isValidEditCommand { 796: my $scriptline = shift; 797: 798: # Line elements are pipe separated: 799: 800: my ($command, $key, $newline) = split(/\|/, $scriptline); 801: &logthis(' isValideditCommand checking: '. 802: "Command = '$command', Key = '$key', Newline = '$newline' \n"); 803: 804: if ($command eq "delete") { 805: # 806: # key with no newline. 807: # 808: if( ($key eq "") || ($newline ne "")) { 809: return 0; # Must have key but no newline. 810: } else { 811: return 1; # Valid syntax. 812: } 813: } elsif ($command eq "replace") { 814: # 815: # key and newline: 816: # 817: if (($key eq "") || ($newline eq "")) { 818: return 0; 819: } else { 820: return 1; 821: } 822: } elsif ($command eq "append") { 823: if (($key ne "") && ($newline eq "")) { 824: return 1; 825: } else { 826: return 0; 827: } 828: } else { 829: return 0; # Invalid command. 830: } 831: return 0; # Should not get here!!! 832: } 833: # 834: # ApplyEdit - Applies an edit command to a line in a configuration 835: # file. It is the caller's responsiblity to validate the 836: # edit line. 837: # Parameters: 838: # $directive - A single edit directive to apply. 839: # Edit directives are of the form: 840: # append|newline - Appends a new line to the file. 841: # replace|key|newline - Replaces the line with key value 'key' 842: # delete|key - Deletes the line with key value 'key'. 843: # $editor - A config file editor object that contains the 844: # file being edited. 845: # 846: sub ApplyEdit { 847: 848: my ($directive, $editor) = @_; 849: 850: # Break the directive down into its command and its parameters 851: # (at most two at this point. The meaning of the parameters, if in fact 852: # they exist depends on the command). 853: 854: my ($command, $p1, $p2) = split(/\|/, $directive); 855: 856: if($command eq "append") { 857: $editor->Append($p1); # p1 - key p2 null. 858: } elsif ($command eq "replace") { 859: $editor->ReplaceLine($p1, $p2); # p1 - key p2 = newline. 860: } elsif ($command eq "delete") { 861: $editor->DeleteLine($p1); # p1 - key p2 null. 862: } else { # Should not get here!!! 863: die "Invalid command given to ApplyEdit $command" 864: } 865: } 866: # 867: # AdjustOurHost: 868: # Adjusts a host file stored in a configuration file editor object 869: # for the true IP address of this host. This is necessary for hosts 870: # that live behind a firewall. 871: # Those hosts have a publicly distributed IP of the firewall, but 872: # internally must use their actual IP. We assume that a given 873: # host only has a single IP interface for now. 874: # Formal Parameters: 875: # editor - The configuration file editor to adjust. This 876: # editor is assumed to contain a hosts.tab file. 877: # Strategy: 878: # - Figure out our hostname. 879: # - Lookup the entry for this host. 880: # - Modify the line to contain our IP 881: # - Do a replace for this host. 882: sub AdjustOurHost { 883: my $editor = shift; 884: 885: # figure out who I am. 886: 887: my $myHostName = $perlvar{'lonHostID'}; # LonCAPA hostname. 888: 889: # Get my host file entry. 890: 891: my $ConfigLine = $editor->Find($myHostName); 892: if(! (defined $ConfigLine)) { 893: die "AdjustOurHost - no entry for me in hosts file $myHostName"; 894: } 895: # figure out my IP: 896: # Use the config line to get my hostname. 897: # Use gethostbyname to translate that into an IP address. 898: # 899: my ($id,$domain,$role,$name,$maxcon,$idleto,$mincon) = split(/:/,$ConfigLine); 900: # 901: # Reassemble the config line from the elements in the list. 902: # Note that if the loncnew items were not present before, they will 903: # be now even if they would be empty 904: # 905: my $newConfigLine = $id; 906: foreach my $item ($domain, $role, $name, $maxcon, $idleto, $mincon) { 907: $newConfigLine .= ":".$item; 908: } 909: # Replace the line: 910: 911: $editor->ReplaceLine($id, $newConfigLine); 912: 913: } 914: # 915: # ReplaceConfigFile: 916: # Replaces a configuration file with the contents of a 917: # configuration file editor object. 918: # This is done by: 919: # - Copying the target file to <filename>.old 920: # - Writing the new file to <filename>.tmp 921: # - Moving <filename.tmp> -> <filename> 922: # This laborious process ensures that the system is never without 923: # a configuration file that's at least valid (even if the contents 924: # may be dated). 925: # Parameters: 926: # filename - Name of the file to modify... this is a full path. 927: # editor - Editor containing the file. 928: # 929: sub ReplaceConfigFile { 930: 931: my ($filename, $editor) = @_; 932: 933: CopyFile ($filename, $filename.".old"); 934: 935: my $contents = $editor->Get(); # Get the contents of the file. 936: 937: InstallFile($filename, $contents); 938: } 939: # 940: # 941: # Called to edit a configuration table file 942: # Parameters: 943: # request - The entire command/request sent by lonc or lonManage 944: # Return: 945: # The reply to send to the client. 946: # 947: sub EditFile { 948: my $request = shift; 949: 950: # Split the command into it's pieces: edit:filetype:script 951: 952: my ($cmd, $filetype, $script) = split(/:/, $request,3); # : in script 953: 954: # Check the pre-coditions for success: 955: 956: if($cmd != "edit") { # Something is amiss afoot alack. 957: return "error:edit request detected, but request != 'edit'\n"; 958: } 959: if( ($filetype ne "hosts") && 960: ($filetype ne "domain")) { 961: return "error:edit requested with invalid file specifier: $filetype \n"; 962: } 963: 964: # Split the edit script and check it's validity. 965: 966: my @scriptlines = split(/\n/, $script); # one line per element. 967: my $linecount = scalar(@scriptlines); 968: for(my $i = 0; $i < $linecount; $i++) { 969: chomp($scriptlines[$i]); 970: if(!isValidEditCommand($scriptlines[$i])) { 971: return "error:edit with bad script line: '$scriptlines[$i]' \n"; 972: } 973: } 974: 975: # Execute the edit operation. 976: # - Create a config file editor for the appropriate file and 977: # - execute each command in the script: 978: # 979: my $configfile = ConfigFileFromSelector($filetype); 980: if (!(defined $configfile)) { 981: return "refused\n"; 982: } 983: my $editor = ConfigFileEdit->new($configfile); 984: 985: for (my $i = 0; $i < $linecount; $i++) { 986: ApplyEdit($scriptlines[$i], $editor); 987: } 988: # If the file is the host file, ensure that our host is 989: # adjusted to have our ip: 990: # 991: if($filetype eq "host") { 992: AdjustOurHost($editor); 993: } 994: # Finally replace the current file with our file. 995: # 996: ReplaceConfigFile($configfile, $editor); 997: 998: return "ok\n"; 999: } 1000: 1001: # read_profile 1002: # 1003: # Returns a set of specific entries from a user's profile file. 1004: # this is a utility function that is used by both get_profile_entry and 1005: # get_profile_entry_encrypted. 1006: # 1007: # Parameters: 1008: # udom - Domain in which the user exists. 1009: # uname - User's account name (loncapa account) 1010: # namespace - The profile namespace to open. 1011: # what - A set of & separated queries. 1012: # Returns: 1013: # If all ok: - The string that needs to be shipped back to the user. 1014: # If failure - A string that starts with error: followed by the failure 1015: # reason.. note that this probabyl gets shipped back to the 1016: # user as well. 1017: # 1018: sub read_profile { 1019: my ($udom, $uname, $namespace, $what) = @_; 1020: 1021: my $hashref = &tie_user_hash($udom, $uname, $namespace, 1022: &GDBM_READER()); 1023: if ($hashref) { 1024: my @queries=split(/\&/,$what); 1025: if ($namespace eq 'roles') { 1026: @queries = map { &unescape($_); } @queries; 1027: } 1028: my $qresult=''; 1029: 1030: for (my $i=0;$i<=$#queries;$i++) { 1031: $qresult.="$hashref->{$queries[$i]}&"; # Presumably failure gives empty string. 1032: } 1033: $qresult=~s/\&$//; # Remove trailing & from last lookup. 1034: if (&untie_user_hash($hashref)) { 1035: return $qresult; 1036: } else { 1037: return "error: ".($!+0)." untie (GDBM) Failed"; 1038: } 1039: } else { 1040: if ($!+0 == 2) { 1041: return "error:No such file or GDBM reported bad block error"; 1042: } else { 1043: return "error: ".($!+0)." tie (GDBM) Failed"; 1044: } 1045: } 1046: 1047: } 1048: #--------------------- Request Handlers -------------------------------------------- 1049: # 1050: # By convention each request handler registers itself prior to the sub 1051: # declaration: 1052: # 1053: 1054: #++ 1055: # 1056: # Handles ping requests. 1057: # Parameters: 1058: # $cmd - the actual keyword that invoked us. 1059: # $tail - the tail of the request that invoked us. 1060: # $replyfd- File descriptor connected to the client 1061: # Implicit Inputs: 1062: # $currenthostid - Global variable that carries the name of the host we are 1063: # known as. 1064: # Returns: 1065: # 1 - Ok to continue processing. 1066: # 0 - Program should exit. 1067: # Side effects: 1068: # Reply information is sent to the client. 1069: sub ping_handler { 1070: my ($cmd, $tail, $client) = @_; 1071: Debug("$cmd $tail $client .. $currenthostid:"); 1072: 1073: Reply( $client,\$currenthostid,"$cmd:$tail"); 1074: 1075: return 1; 1076: } 1077: &register_handler("ping", \&ping_handler, 0, 1, 1); # Ping unencoded, client or manager. 1078: 1079: #++ 1080: # 1081: # Handles pong requests. Pong replies with our current host id, and 1082: # the results of a ping sent to us via our lonc. 1083: # 1084: # Parameters: 1085: # $cmd - the actual keyword that invoked us. 1086: # $tail - the tail of the request that invoked us. 1087: # $replyfd- File descriptor connected to the client 1088: # Implicit Inputs: 1089: # $currenthostid - Global variable that carries the name of the host we are 1090: # connected to. 1091: # Returns: 1092: # 1 - Ok to continue processing. 1093: # 0 - Program should exit. 1094: # Side effects: 1095: # Reply information is sent to the client. 1096: sub pong_handler { 1097: my ($cmd, $tail, $replyfd) = @_; 1098: 1099: my $reply=&Apache::lonnet::reply("ping",$clientname); 1100: &Reply( $replyfd, "$currenthostid:$reply\n", "$cmd:$tail"); 1101: return 1; 1102: } 1103: &register_handler("pong", \&pong_handler, 0, 1, 1); # Pong unencoded, client or manager 1104: 1105: #++ 1106: # Called to establish an encrypted session key with the remote client. 1107: # Note that with secure lond, in most cases this function is never 1108: # invoked. Instead, the secure session key is established either 1109: # via a local file that's locked down tight and only lives for a short 1110: # time, or via an ssl tunnel...and is generated from a bunch-o-random 1111: # bits from /dev/urandom, rather than the predictable pattern used by 1112: # by this sub. This sub is only used in the old-style insecure 1113: # key negotiation. 1114: # Parameters: 1115: # $cmd - the actual keyword that invoked us. 1116: # $tail - the tail of the request that invoked us. 1117: # $replyfd- File descriptor connected to the client 1118: # Implicit Inputs: 1119: # $currenthostid - Global variable that carries the name of the host 1120: # known as. 1121: # $clientname - Global variable that carries the name of the host we're connected to. 1122: # Returns: 1123: # 1 - Ok to continue processing. 1124: # 0 - Program should exit. 1125: # Implicit Outputs: 1126: # Reply information is sent to the client. 1127: # $cipher is set with a reference to a new IDEA encryption object. 1128: # 1129: sub establish_key_handler { 1130: my ($cmd, $tail, $replyfd) = @_; 1131: 1132: my $buildkey=time.$$.int(rand 100000); 1133: $buildkey=~tr/1-6/A-F/; 1134: $buildkey=int(rand 100000).$buildkey.int(rand 100000); 1135: my $key=$currenthostid.$clientname; 1136: $key=~tr/a-z/A-Z/; 1137: $key=~tr/G-P/0-9/; 1138: $key=~tr/Q-Z/0-9/; 1139: $key=$key.$buildkey.$key.$buildkey.$key.$buildkey; 1140: $key=substr($key,0,32); 1141: my $cipherkey=pack("H32",$key); 1142: $cipher=new IDEA $cipherkey; 1143: &Reply($replyfd, \$buildkey, "$cmd:$tail"); 1144: 1145: return 1; 1146: 1147: } 1148: &register_handler("ekey", \&establish_key_handler, 0, 1,1); 1149: 1150: # Handler for the load command. Returns the current system load average 1151: # to the requestor. 1152: # 1153: # Parameters: 1154: # $cmd - the actual keyword that invoked us. 1155: # $tail - the tail of the request that invoked us. 1156: # $replyfd- File descriptor connected to the client 1157: # Implicit Inputs: 1158: # $currenthostid - Global variable that carries the name of the host 1159: # known as. 1160: # $clientname - Global variable that carries the name of the host we're connected to. 1161: # Returns: 1162: # 1 - Ok to continue processing. 1163: # 0 - Program should exit. 1164: # Side effects: 1165: # Reply information is sent to the client. 1166: sub load_handler { 1167: my ($cmd, $tail, $replyfd) = @_; 1168: 1169: 1170: 1171: # Get the load average from /proc/loadavg and calculate it as a percentage of 1172: # the allowed load limit as set by the perl global variable lonLoadLim 1173: 1174: my $loadavg; 1175: my $loadfile=IO::File->new('/proc/loadavg'); 1176: 1177: $loadavg=<$loadfile>; 1178: $loadavg =~ s/\s.*//g; # Extract the first field only. 1179: 1180: my $loadpercent=100*$loadavg/$perlvar{'lonLoadLim'}; 1181: 1182: &Reply( $replyfd, \$loadpercent, "$cmd:$tail"); 1183: 1184: return 1; 1185: } 1186: &register_handler("load", \&load_handler, 0, 1, 0); 1187: 1188: # 1189: # Process the userload request. This sub returns to the client the current 1190: # user load average. It can be invoked either by clients or managers. 1191: # 1192: # Parameters: 1193: # $cmd - the actual keyword that invoked us. 1194: # $tail - the tail of the request that invoked us. 1195: # $replyfd- File descriptor connected to the client 1196: # Implicit Inputs: 1197: # $currenthostid - Global variable that carries the name of the host 1198: # known as. 1199: # $clientname - Global variable that carries the name of the host we're connected to. 1200: # Returns: 1201: # 1 - Ok to continue processing. 1202: # 0 - Program should exit 1203: # Implicit inputs: 1204: # whatever the userload() function requires. 1205: # Implicit outputs: 1206: # the reply is written to the client. 1207: # 1208: sub user_load_handler { 1209: my ($cmd, $tail, $replyfd) = @_; 1210: 1211: my $userloadpercent=&Apache::lonnet::userload(); 1212: &Reply($replyfd, \$userloadpercent, "$cmd:$tail"); 1213: 1214: return 1; 1215: } 1216: &register_handler("userload", \&user_load_handler, 0, 1, 0); 1217: 1218: # Process a request for the authorization type of a user: 1219: # (userauth). 1220: # 1221: # Parameters: 1222: # $cmd - the actual keyword that invoked us. 1223: # $tail - the tail of the request that invoked us. 1224: # $replyfd- File descriptor connected to the client 1225: # Returns: 1226: # 1 - Ok to continue processing. 1227: # 0 - Program should exit 1228: # Implicit outputs: 1229: # The user authorization type is written to the client. 1230: # 1231: sub user_authorization_type { 1232: my ($cmd, $tail, $replyfd) = @_; 1233: 1234: my $userinput = "$cmd:$tail"; 1235: 1236: # Pull the domain and username out of the command tail. 1237: # and call get_auth_type to determine the authentication type. 1238: 1239: my ($udom,$uname)=split(/:/,$tail); 1240: my $result = &get_auth_type($udom, $uname); 1241: if($result eq "nouser") { 1242: &Failure( $replyfd, "unknown_user\n", $userinput); 1243: } else { 1244: # 1245: # We only want to pass the second field from get_auth_type 1246: # for ^krb.. otherwise we'll be handing out the encrypted 1247: # password for internals e.g. 1248: # 1249: my ($type,$otherinfo) = split(/:/,$result); 1250: if($type =~ /^krb/) { 1251: $type = $result; 1252: } else { 1253: $type .= ':'; 1254: } 1255: &Reply( $replyfd, \$type, $userinput); 1256: } 1257: 1258: return 1; 1259: } 1260: &register_handler("currentauth", \&user_authorization_type, 1, 1, 0); 1261: 1262: # Process a request by a manager to push a hosts or domain table 1263: # to us. We pick apart the command and pass it on to the subs 1264: # that already exist to do this. 1265: # 1266: # Parameters: 1267: # $cmd - the actual keyword that invoked us. 1268: # $tail - the tail of the request that invoked us. 1269: # $client - File descriptor connected to the client 1270: # Returns: 1271: # 1 - Ok to continue processing. 1272: # 0 - Program should exit 1273: # Implicit Output: 1274: # a reply is written to the client. 1275: sub push_file_handler { 1276: my ($cmd, $tail, $client) = @_; 1277: &Debug("In push file handler"); 1278: my $userinput = "$cmd:$tail"; 1279: 1280: # At this time we only know that the IP of our partner is a valid manager 1281: # the code below is a hook to do further authentication (e.g. to resolve 1282: # spoofing). 1283: 1284: my $cert = &GetCertificate($userinput); 1285: if(&ValidManager($cert)) { 1286: &Debug("Valid manager: $client"); 1287: 1288: # Now presumably we have the bona fides of both the peer host and the 1289: # process making the request. 1290: 1291: my $reply = &PushFile($userinput); 1292: &Reply($client, \$reply, $userinput); 1293: 1294: } else { 1295: &logthis("push_file_handler $client is not valid"); 1296: &Failure( $client, "refused\n", $userinput); 1297: } 1298: return 1; 1299: } 1300: &register_handler("pushfile", \&push_file_handler, 1, 0, 1); 1301: 1302: # The du_handler routine should be considered obsolete and is retained 1303: # for communication with legacy servers. Please see the du2_handler. 1304: # 1305: # du - list the disk usage of a directory recursively. 1306: # 1307: # note: stolen code from the ls file handler 1308: # under construction by Rick Banghart 1309: # . 1310: # Parameters: 1311: # $cmd - The command that dispatched us (du). 1312: # $ududir - The directory path to list... I'm not sure what this 1313: # is relative as things like ls:. return e.g. 1314: # no_such_dir. 1315: # $client - Socket open on the client. 1316: # Returns: 1317: # 1 - indicating that the daemon should not disconnect. 1318: # Side Effects: 1319: # The reply is written to $client. 1320: # 1321: sub du_handler { 1322: my ($cmd, $ududir, $client) = @_; 1323: ($ududir) = split(/:/,$ududir); # Make 'telnet' testing easier. 1324: my $userinput = "$cmd:$ududir"; 1325: 1326: if ($ududir=~/\.\./ || $ududir!~m|^/home/httpd/|) { 1327: &Failure($client,"refused\n","$cmd:$ududir"); 1328: return 1; 1329: } 1330: # Since $ududir could have some nasties in it, 1331: # we will require that ududir is a valid 1332: # directory. Just in case someone tries to 1333: # slip us a line like .;(cd /home/httpd rm -rf*) 1334: # etc. 1335: # 1336: if (-d $ududir) { 1337: my $total_size=0; 1338: my $code=sub { 1339: if ($_=~/\.\d+\./) { return;} 1340: if ($_=~/\.meta$/) { return;} 1341: if (-d $_) { return;} 1342: $total_size+=(stat($_))[7]; 1343: }; 1344: chdir($ududir); 1345: find($code,$ududir); 1346: $total_size=int($total_size/1024); 1347: &Reply($client,\$total_size,"$cmd:$ududir"); 1348: } else { 1349: &Failure($client, "bad_directory:$ududir\n","$cmd:$ududir"); 1350: } 1351: return 1; 1352: } 1353: &register_handler("du", \&du_handler, 0, 1, 0); 1354: 1355: # Please also see the du_handler, which is obsoleted by du2. 1356: # du2_handler differs from du_handler in that required path to directory 1357: # provided by &propath() is prepended in the handler instead of on the 1358: # client side. 1359: # 1360: # du2 - list the disk usage of a directory recursively. 1361: # 1362: # Parameters: 1363: # $cmd - The command that dispatched us (du). 1364: # $tail - The tail of the request that invoked us. 1365: # $tail is a : separated list of the following: 1366: # - $ududir - directory path to list (before prepending) 1367: # - $getpropath = 1 if &propath() should prepend 1368: # - $uname - username to use for &propath or user dir 1369: # - $udom - domain to use for &propath or user dir 1370: # All are escaped. 1371: # $client - Socket open on the client. 1372: # Returns: 1373: # 1 - indicating that the daemon should not disconnect. 1374: # Side Effects: 1375: # The reply is written to $client. 1376: # 1377: 1378: sub du2_handler { 1379: my ($cmd, $tail, $client) = @_; 1380: my ($ududir,$getpropath,$uname,$udom) = map { &unescape($_) } (split(/:/, $tail)); 1381: my $userinput = "$cmd:$tail"; 1382: if (($ududir=~/\.\./) || (($ududir!~m|^/home/httpd/|) && (!$getpropath))) { 1383: &Failure($client,"refused\n","$cmd:$tail"); 1384: return 1; 1385: } 1386: if ($getpropath) { 1387: if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) { 1388: $ududir = &propath($udom,$uname).'/'.$ududir; 1389: } else { 1390: &Failure($client,"refused\n","$cmd:$tail"); 1391: return 1; 1392: } 1393: } 1394: # Since $ududir could have some nasties in it, 1395: # we will require that ududir is a valid 1396: # directory. Just in case someone tries to 1397: # slip us a line like .;(cd /home/httpd rm -rf*) 1398: # etc. 1399: # 1400: if (-d $ududir) { 1401: my $total_size=0; 1402: my $code=sub { 1403: if ($_=~/\.\d+\./) { return;} 1404: if ($_=~/\.meta$/) { return;} 1405: if (-d $_) { return;} 1406: $total_size+=(stat($_))[7]; 1407: }; 1408: chdir($ududir); 1409: find($code,$ududir); 1410: $total_size=int($total_size/1024); 1411: &Reply($client,\$total_size,"$cmd:$ududir"); 1412: } else { 1413: &Failure($client, "bad_directory:$ududir\n","$cmd:$tail"); 1414: } 1415: return 1; 1416: } 1417: &register_handler("du2", \&du2_handler, 0, 1, 0); 1418: 1419: # 1420: # The ls_handler routine should be considered obsolete and is retained 1421: # for communication with legacy servers. Please see the ls3_handler. 1422: # 1423: # ls - list the contents of a directory. For each file in the 1424: # selected directory the filename followed by the full output of 1425: # the stat function is returned. The returned info for each 1426: # file are separated by ':'. The stat fields are separated by &'s. 1427: # 1428: # If the requested path contains /../ or is: 1429: # 1430: # 1. for a directory, and the path does not begin with one of: 1431: # (a) /home/httpd/html/res/<domain> 1432: # (b) /home/httpd/html/userfiles/ 1433: # (c) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/userfiles 1434: # or is: 1435: # 1436: # 2. for a file, and the path (after prepending) does not begin with one of: 1437: # (a) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/ 1438: # (b) /home/httpd/html/res/<domain>/<username>/ 1439: # (c) /home/httpd/html/userfiles/<domain>/<username>/ 1440: # 1441: # the response will be "refused". 1442: # 1443: # Parameters: 1444: # $cmd - The command that dispatched us (ls). 1445: # $ulsdir - The directory path to list... I'm not sure what this 1446: # is relative as things like ls:. return e.g. 1447: # no_such_dir. 1448: # $client - Socket open on the client. 1449: # Returns: 1450: # 1 - indicating that the daemon should not disconnect. 1451: # Side Effects: 1452: # The reply is written to $client. 1453: # 1454: sub ls_handler { 1455: # obsoleted by ls2_handler 1456: my ($cmd, $ulsdir, $client) = @_; 1457: 1458: my $userinput = "$cmd:$ulsdir"; 1459: 1460: my $obs; 1461: my $rights; 1462: my $ulsout=''; 1463: my $ulsfn; 1464: if ($ulsdir =~m{/\.\./}) { 1465: &Failure($client,"refused\n",$userinput); 1466: return 1; 1467: } 1468: if (-e $ulsdir) { 1469: if(-d $ulsdir) { 1470: unless (($ulsdir =~ m{^/home/httpd/html/(res/$LONCAPA::match_domain|userfiles/)}) || 1471: ($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/userfiles})) { 1472: &Failure($client,"refused\n",$userinput); 1473: return 1; 1474: } 1475: if (opendir(LSDIR,$ulsdir)) { 1476: while ($ulsfn=readdir(LSDIR)) { 1477: undef($obs); 1478: undef($rights); 1479: my @ulsstats=stat($ulsdir.'/'.$ulsfn); 1480: #We do some obsolete checking here 1481: if(-e $ulsdir.'/'.$ulsfn.".meta") { 1482: open(FILE, $ulsdir.'/'.$ulsfn.".meta"); 1483: my @obsolete=<FILE>; 1484: foreach my $obsolete (@obsolete) { 1485: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; } 1486: if($obsolete =~ m|(<copyright>)(default)|) { $rights = 1; } 1487: } 1488: } 1489: $ulsout.=$ulsfn.'&'.join('&',@ulsstats); 1490: if($obs eq '1') { $ulsout.="&1"; } 1491: else { $ulsout.="&0"; } 1492: if($rights eq '1') { $ulsout.="&1:"; } 1493: else { $ulsout.="&0:"; } 1494: } 1495: closedir(LSDIR); 1496: } 1497: } else { 1498: unless (($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/}) || 1499: ($ulsdir =~ m{^/home/httpd/html/(?:res|userfiles)/$LONCAPA::match_domain/$LONCAPA::match_name/})) { 1500: &Failure($client,"refused\n",$userinput); 1501: return 1; 1502: } 1503: my @ulsstats=stat($ulsdir); 1504: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':'; 1505: } 1506: } else { 1507: $ulsout='no_such_dir'; 1508: } 1509: if ($ulsout eq '') { $ulsout='empty'; } 1510: &Reply($client, \$ulsout, $userinput); # This supports debug logging. 1511: 1512: return 1; 1513: 1514: } 1515: &register_handler("ls", \&ls_handler, 0, 1, 0); 1516: 1517: # The ls2_handler routine should be considered obsolete and is retained 1518: # for communication with legacy servers. Please see the ls3_handler. 1519: # Please also see the ls_handler, which was itself obsoleted by ls2. 1520: # ls2_handler differs from ls_handler in that it escapes its return 1521: # values before concatenating them together with ':'s. 1522: # 1523: # ls2 - list the contents of a directory. For each file in the 1524: # selected directory the filename followed by the full output of 1525: # the stat function is returned. The returned info for each 1526: # file are separated by ':'. The stat fields are separated by &'s. 1527: # 1528: # If the requested path contains /../ or is: 1529: # 1530: # 1. for a directory, and the path does not begin with one of: 1531: # (a) /home/httpd/html/res/<domain> 1532: # (b) /home/httpd/html/userfiles/ 1533: # (c) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/userfiles 1534: # or is: 1535: # 1536: # 2. for a file, and the path (after prepending) does not begin with one of: 1537: # (a) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/ 1538: # (b) /home/httpd/html/res/<domain>/<username>/ 1539: # (c) /home/httpd/html/userfiles/<domain>/<username>/ 1540: # 1541: # the response will be "refused". 1542: # 1543: # Parameters: 1544: # $cmd - The command that dispatched us (ls). 1545: # $ulsdir - The directory path to list... I'm not sure what this 1546: # is relative as things like ls:. return e.g. 1547: # no_such_dir. 1548: # $client - Socket open on the client. 1549: # Returns: 1550: # 1 - indicating that the daemon should not disconnect. 1551: # Side Effects: 1552: # The reply is written to $client. 1553: # 1554: sub ls2_handler { 1555: my ($cmd, $ulsdir, $client) = @_; 1556: 1557: my $userinput = "$cmd:$ulsdir"; 1558: 1559: my $obs; 1560: my $rights; 1561: my $ulsout=''; 1562: my $ulsfn; 1563: if ($ulsdir =~m{/\.\./}) { 1564: &Failure($client,"refused\n",$userinput); 1565: return 1; 1566: } 1567: if (-e $ulsdir) { 1568: if(-d $ulsdir) { 1569: unless (($ulsdir =~ m{^/home/httpd/html/(res/$LONCAPA::match_domain|userfiles/)}) || 1570: ($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/userfiles})) { 1571: &Failure($client,"refused\n","$userinput"); 1572: return 1; 1573: } 1574: if (opendir(LSDIR,$ulsdir)) { 1575: while ($ulsfn=readdir(LSDIR)) { 1576: undef($obs); 1577: undef($rights); 1578: my @ulsstats=stat($ulsdir.'/'.$ulsfn); 1579: #We do some obsolete checking here 1580: if(-e $ulsdir.'/'.$ulsfn.".meta") { 1581: open(FILE, $ulsdir.'/'.$ulsfn.".meta"); 1582: my @obsolete=<FILE>; 1583: foreach my $obsolete (@obsolete) { 1584: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; } 1585: if($obsolete =~ m|(<copyright>)(default)|) { 1586: $rights = 1; 1587: } 1588: } 1589: } 1590: my $tmp = $ulsfn.'&'.join('&',@ulsstats); 1591: if ($obs eq '1') { $tmp.="&1"; } else { $tmp.="&0"; } 1592: if ($rights eq '1') { $tmp.="&1"; } else { $tmp.="&0"; } 1593: $ulsout.= &escape($tmp).':'; 1594: } 1595: closedir(LSDIR); 1596: } 1597: } else { 1598: unless (($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/}) || 1599: ($ulsdir =~ m{^/home/httpd/html/(?:res|userfiles)/$LONCAPA::match_domain/$LONCAPA::match_name/})) { 1600: &Failure($client,"refused\n",$userinput); 1601: return 1; 1602: } 1603: my @ulsstats=stat($ulsdir); 1604: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':'; 1605: } 1606: } else { 1607: $ulsout='no_such_dir'; 1608: } 1609: if ($ulsout eq '') { $ulsout='empty'; } 1610: &Reply($client, \$ulsout, $userinput); # This supports debug logging. 1611: return 1; 1612: } 1613: &register_handler("ls2", \&ls2_handler, 0, 1, 0); 1614: # 1615: # ls3 - list the contents of a directory. For each file in the 1616: # selected directory the filename followed by the full output of 1617: # the stat function is returned. The returned info for each 1618: # file are separated by ':'. The stat fields are separated by &'s. 1619: # 1620: # If the requested path (after prepending) contains /../ or is: 1621: # 1622: # 1. for a directory, and the path does not begin with one of: 1623: # (a) /home/httpd/html/res/<domain> 1624: # (b) /home/httpd/html/userfiles/ 1625: # (c) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/userfiles 1626: # (d) /home/httpd/html/priv/<domain> and client is the homeserver 1627: # 1628: # or is: 1629: # 1630: # 2. for a file, and the path (after prepending) does not begin with one of: 1631: # (a) /home/httpd/lonUsers/<domain>/<1>/<2>/<3>/<username>/ 1632: # (b) /home/httpd/html/res/<domain>/<username>/ 1633: # (c) /home/httpd/html/userfiles/<domain>/<username>/ 1634: # (d) /home/httpd/html/priv/<domain>/<username>/ and client is the homeserver 1635: # 1636: # the response will be "refused". 1637: # 1638: # Parameters: 1639: # $cmd - The command that dispatched us (ls). 1640: # $tail - The tail of the request that invoked us. 1641: # $tail is a : separated list of the following: 1642: # - $ulsdir - directory path to list (before prepending) 1643: # - $getpropath = 1 if &propath() should prepend 1644: # - $getuserdir = 1 if path to user dir in lonUsers should 1645: # prepend 1646: # - $alternate_root - path to prepend 1647: # - $uname - username to use for &propath or user dir 1648: # - $udom - domain to use for &propath or user dir 1649: # All of these except $getpropath and &getuserdir are escaped. 1650: # no_such_dir. 1651: # $client - Socket open on the client. 1652: # Returns: 1653: # 1 - indicating that the daemon should not disconnect. 1654: # Side Effects: 1655: # The reply is written to $client. 1656: # 1657: 1658: sub ls3_handler { 1659: my ($cmd, $tail, $client) = @_; 1660: my $userinput = "$cmd:$tail"; 1661: my ($ulsdir,$getpropath,$getuserdir,$alternate_root,$uname,$udom) = 1662: split(/:/,$tail); 1663: if (defined($ulsdir)) { 1664: $ulsdir = &unescape($ulsdir); 1665: } 1666: if (defined($alternate_root)) { 1667: $alternate_root = &unescape($alternate_root); 1668: } 1669: if (defined($uname)) { 1670: $uname = &unescape($uname); 1671: } 1672: if (defined($udom)) { 1673: $udom = &unescape($udom); 1674: } 1675: 1676: my $dir_root = $perlvar{'lonDocRoot'}; 1677: if (($getpropath) || ($getuserdir)) { 1678: if (($uname =~ /^$LONCAPA::match_name$/) && ($udom =~ /^$LONCAPA::match_domain$/)) { 1679: $dir_root = &propath($udom,$uname); 1680: $dir_root =~ s/\/$//; 1681: } else { 1682: &Failure($client,"refused\n",$userinput); 1683: return 1; 1684: } 1685: } elsif ($alternate_root ne '') { 1686: $dir_root = $alternate_root; 1687: } 1688: if (($dir_root ne '') && ($dir_root ne '/')) { 1689: if ($ulsdir =~ /^\//) { 1690: $ulsdir = $dir_root.$ulsdir; 1691: } else { 1692: $ulsdir = $dir_root.'/'.$ulsdir; 1693: } 1694: } 1695: if ($ulsdir =~m{/\.\./}) { 1696: &Failure($client,"refused\n",$userinput); 1697: return 1; 1698: } 1699: my $islocal; 1700: my @machine_ids = &Apache::lonnet::current_machine_ids(); 1701: if (grep(/^\Q$clientname\E$/,@machine_ids)) { 1702: $islocal = 1; 1703: } 1704: my $obs; 1705: my $rights; 1706: my $ulsout=''; 1707: my $ulsfn; 1708: if (-e $ulsdir) { 1709: if(-d $ulsdir) { 1710: unless (($getpropath) || ($getuserdir) || 1711: ($ulsdir =~ m{^/home/httpd/html/(res/$LONCAPA::match_domain|userfiles/)}) || 1712: ($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/userfiles}) || 1713: (($ulsdir =~ m{^/home/httpd/html/priv/$LONCAPA::match_domain}) && ($islocal))) { 1714: &Failure($client,"refused\n",$userinput); 1715: return 1; 1716: } 1717: if (opendir(LSDIR,$ulsdir)) { 1718: while ($ulsfn=readdir(LSDIR)) { 1719: undef($obs); 1720: undef($rights); 1721: my @ulsstats=stat($ulsdir.'/'.$ulsfn); 1722: #We do some obsolete checking here 1723: if(-e $ulsdir.'/'.$ulsfn.".meta") { 1724: open(FILE, $ulsdir.'/'.$ulsfn.".meta"); 1725: my @obsolete=<FILE>; 1726: foreach my $obsolete (@obsolete) { 1727: if($obsolete =~ m/(<obsolete>)(on|1)/) { $obs = 1; } 1728: if($obsolete =~ m|(<copyright>)(default)|) { 1729: $rights = 1; 1730: } 1731: } 1732: } 1733: my $tmp = $ulsfn.'&'.join('&',@ulsstats); 1734: if ($obs eq '1') { $tmp.="&1"; } else { $tmp.="&0"; } 1735: if ($rights eq '1') { $tmp.="&1"; } else { $tmp.="&0"; } 1736: $ulsout.= &escape($tmp).':'; 1737: } 1738: closedir(LSDIR); 1739: } 1740: } else { 1741: unless (($getpropath) || ($getuserdir) || 1742: ($ulsdir =~ m{^/home/httpd/lonUsers/$LONCAPA::match_domain(?:/[\w\-.@]){3}/$LONCAPA::match_name/}) || 1743: ($ulsdir =~ m{^/home/httpd/html/(?:res|userfiles)/$LONCAPA::match_domain/$LONCAPA::match_name/}) || 1744: (($ulsdir =~ m{^/home/httpd/html/priv/$LONCAPA::match_domain/$LONCAPA::match_name/}) && ($islocal))) { 1745: &Failure($client,"refused\n",$userinput); 1746: return 1; 1747: } 1748: my @ulsstats=stat($ulsdir); 1749: $ulsout.=$ulsfn.'&'.join('&',@ulsstats).':'; 1750: } 1751: } else { 1752: $ulsout='no_such_dir'; 1753: } 1754: if ($ulsout eq '') { $ulsout='empty'; } 1755: &Reply($client, \$ulsout, $userinput); # This supports debug logging. 1756: return 1; 1757: } 1758: &register_handler("ls3", \&ls3_handler, 0, 1, 0); 1759: 1760: sub read_lonnet_global { 1761: my ($cmd,$tail,$client) = @_; 1762: my $userinput = "$cmd:$tail"; 1763: my $requested = &Apache::lonnet::thaw_unescape($tail); 1764: my $result; 1765: my %packagevars = ( 1766: spareid => \%Apache::lonnet::spareid, 1767: perlvar => \%Apache::lonnet::perlvar, 1768: ); 1769: my %limit_to = ( 1770: perlvar => { 1771: lonOtherAuthen => 1, 1772: lonBalancer => 1, 1773: lonVersion => 1, 1774: lonSysEMail => 1, 1775: lonHostID => 1, 1776: lonRole => 1, 1777: lonDefDomain => 1, 1778: lonLoadLim => 1, 1779: lonUserLoadLim => 1, 1780: } 1781: ); 1782: if (ref($requested) eq 'HASH') { 1783: foreach my $what (keys(%{$requested})) { 1784: my $response; 1785: my $items = {}; 1786: if (exists($packagevars{$what})) { 1787: if (ref($limit_to{$what}) eq 'HASH') { 1788: foreach my $varname (keys(%{$packagevars{$what}})) { 1789: if ($limit_to{$what}{$varname}) { 1790: $items->{$varname} = $packagevars{$what}{$varname}; 1791: } 1792: } 1793: } else { 1794: $items = $packagevars{$what}; 1795: } 1796: if ($what eq 'perlvar') { 1797: if (!exists($packagevars{$what}{'lonBalancer'})) { 1798: if ($dist =~ /^(centos|rhes|fedora|scientific|oracle|rocky|alma)/) { 1799: my $othervarref=LONCAPA::Configuration::read_conf('httpd.conf'); 1800: if (ref($othervarref) eq 'HASH') { 1801: $items->{'lonBalancer'} = $othervarref->{'lonBalancer'}; 1802: } 1803: } 1804: } 1805: } 1806: $response = &Apache::lonnet::freeze_escape($items); 1807: } 1808: $result .= &escape($what).'='.$response.'&'; 1809: } 1810: } 1811: $result =~ s/\&$//; 1812: &Reply($client,\$result,$userinput); 1813: return 1; 1814: } 1815: &register_handler("readlonnetglobal", \&read_lonnet_global, 0, 1, 0); 1816: 1817: sub server_devalidatecache_handler { 1818: my ($cmd,$tail,$client) = @_; 1819: my $userinput = "$cmd:$tail"; 1820: my $items = &unescape($tail); 1821: my @cached = split(/\&/,$items); 1822: foreach my $key (@cached) { 1823: if ($key =~ /:/) { 1824: my ($name,$id) = map { &unescape($_); } split(/:/,$key); 1825: &Apache::lonnet::devalidate_cache_new($name,$id); 1826: } 1827: } 1828: my $result = 'ok'; 1829: &Reply($client,\$result,$userinput); 1830: return 1; 1831: } 1832: &register_handler("devalidatecache", \&server_devalidatecache_handler, 0, 1, 0); 1833: 1834: sub server_timezone_handler { 1835: my ($cmd,$tail,$client) = @_; 1836: my $userinput = "$cmd:$tail"; 1837: my $timezone; 1838: my $clockfile = '/etc/sysconfig/clock'; # Fedora/CentOS/SuSE 1839: my $tzfile = '/etc/timezone'; # Debian/Ubuntu 1840: if (-e $clockfile) { 1841: if (open(my $fh,"<$clockfile")) { 1842: while (<$fh>) { 1843: next if (/^[\#\s]/); 1844: if (/^(?:TIME)?ZONE\s*=\s*['"]?\s*([\w\/]+)/) { 1845: $timezone = $1; 1846: last; 1847: } 1848: } 1849: close($fh); 1850: } 1851: } elsif (-e $tzfile) { 1852: if (open(my $fh,"<$tzfile")) { 1853: $timezone = <$fh>; 1854: close($fh); 1855: chomp($timezone); 1856: if ($timezone =~ m{^Etc/(\w+)$}) { 1857: $timezone = $1; 1858: } 1859: } 1860: } 1861: &Reply($client,\$timezone,$userinput); # This supports debug logging. 1862: return 1; 1863: } 1864: &register_handler("servertimezone", \&server_timezone_handler, 0, 1, 0); 1865: 1866: sub server_loncaparev_handler { 1867: my ($cmd,$tail,$client) = @_; 1868: my $userinput = "$cmd:$tail"; 1869: &Reply($client,\$perlvar{'lonVersion'},$userinput); 1870: return 1; 1871: } 1872: &register_handler("serverloncaparev", \&server_loncaparev_handler, 0, 1, 0); 1873: 1874: sub server_homeID_handler { 1875: my ($cmd,$tail,$client) = @_; 1876: my $userinput = "$cmd:$tail"; 1877: &Reply($client,\$perlvar{'lonHostID'},$userinput); 1878: return 1; 1879: } 1880: &register_handler("serverhomeID", \&server_homeID_handler, 0, 1, 0); 1881: 1882: sub server_distarch_handler { 1883: my ($cmd,$tail,$client) = @_; 1884: my $userinput = "$cmd:$tail"; 1885: my $reply = &distro_and_arch(); 1886: &Reply($client,\$reply,$userinput); 1887: return 1; 1888: } 1889: &register_handler("serverdistarch", \&server_distarch_handler, 0, 1, 0); 1890: 1891: # Process a reinit request. Reinit requests that either 1892: # lonc or lond be reinitialized so that an updated 1893: # host.tab or domain.tab can be processed. 1894: # 1895: # Parameters: 1896: # $cmd - the actual keyword that invoked us. 1897: # $tail - the tail of the request that invoked us. 1898: # $client - File descriptor connected to the client 1899: # Returns: 1900: # 1 - Ok to continue processing. 1901: # 0 - Program should exit 1902: # Implicit output: 1903: # a reply is sent to the client. 1904: # 1905: sub reinit_process_handler { 1906: my ($cmd, $tail, $client) = @_; 1907: 1908: my $userinput = "$cmd:$tail"; 1909: 1910: my $cert = &GetCertificate($userinput); 1911: if(&ValidManager($cert)) { 1912: chomp($userinput); 1913: my $reply = &ReinitProcess($userinput); 1914: &Reply( $client, \$reply, $userinput); 1915: } else { 1916: &Failure( $client, "refused\n", $userinput); 1917: } 1918: return 1; 1919: } 1920: &register_handler("reinit", \&reinit_process_handler, 1, 0, 1); 1921: 1922: # Process the editing script for a table edit operation. 1923: # the editing operation must be encrypted and requested by 1924: # a manager host. 1925: # 1926: # Parameters: 1927: # $cmd - the actual keyword that invoked us. 1928: # $tail - the tail of the request that invoked us. 1929: # $client - File descriptor connected to the client 1930: # Returns: 1931: # 1 - Ok to continue processing. 1932: # 0 - Program should exit 1933: # Implicit output: 1934: # a reply is sent to the client. 1935: # 1936: sub edit_table_handler { 1937: my ($command, $tail, $client) = @_; 1938: 1939: my $userinput = "$command:$tail"; 1940: 1941: my $cert = &GetCertificate($userinput); 1942: if(&ValidManager($cert)) { 1943: my($filetype, $script) = split(/:/, $tail); 1944: if (($filetype eq "hosts") || 1945: ($filetype eq "domain")) { 1946: if($script ne "") { 1947: &Reply($client, # BUGBUG - EditFile 1948: &EditFile($userinput), # could fail. 1949: $userinput); 1950: } else { 1951: &Failure($client,"refused\n",$userinput); 1952: } 1953: } else { 1954: &Failure($client,"refused\n",$userinput); 1955: } 1956: } else { 1957: &Failure($client,"refused\n",$userinput); 1958: } 1959: return 1; 1960: } 1961: &register_handler("edit", \&edit_table_handler, 1, 0, 1); 1962: 1963: # 1964: # Authenticate a user against the LonCAPA authentication 1965: # database. Note that there are several authentication 1966: # possibilities: 1967: # - unix - The user can be authenticated against the unix 1968: # password file. 1969: # - internal - The user can be authenticated against a purely 1970: # internal per user password file. 1971: # - kerberos - The user can be authenticated against either a kerb4 or kerb5 1972: # ticket granting authority. 1973: # - user - The person tailoring LonCAPA can supply a user authentication 1974: # mechanism that is per system. 1975: # 1976: # Parameters: 1977: # $cmd - The command that got us here. 1978: # $tail - Tail of the command (remaining parameters). 1979: # $client - File descriptor connected to client. 1980: # Returns 1981: # 0 - Requested to exit, caller should shut down. 1982: # 1 - Continue processing. 1983: # Implicit inputs: 1984: # The authentication systems describe above have their own forms of implicit 1985: # input into the authentication process that are described above. 1986: # 1987: sub authenticate_handler { 1988: my ($cmd, $tail, $client) = @_; 1989: 1990: 1991: # Regenerate the full input line 1992: 1993: my $userinput = $cmd.":".$tail; 1994: 1995: # udom - User's domain. 1996: # uname - Username. 1997: # upass - User's password. 1998: # checkdefauth - Pass to validate_user() to try authentication 1999: # with default auth type(s) if no user account. 2000: # clientcancheckhost - Passed by clients with functionality in lonauth.pm 2001: # to check if session can be hosted. 2002: 2003: my ($udom, $uname, $upass, $checkdefauth, $clientcancheckhost)=split(/:/,$tail); 2004: &Debug(" Authenticate domain = $udom, user = $uname, password = $upass, checkdefauth = $checkdefauth"); 2005: chomp($upass); 2006: $upass=&unescape($upass); 2007: 2008: my $pwdcorrect = &validate_user($udom,$uname,$upass,$checkdefauth); 2009: if($pwdcorrect) { 2010: my $canhost = 1; 2011: unless ($clientcancheckhost) { 2012: my $uprimary_id = &Apache::lonnet::domain($udom,'primary'); 2013: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id); 2014: my @intdoms; 2015: my $internet_names = &Apache::lonnet::get_internet_names($clientname); 2016: if (ref($internet_names) eq 'ARRAY') { 2017: @intdoms = @{$internet_names}; 2018: } 2019: unless ($uint_dom ne '' && grep(/^\Q$uint_dom\E$/,@intdoms)) { 2020: my ($remote,$hosted); 2021: my $remotesession = &get_usersession_config($udom,'remotesession'); 2022: if (ref($remotesession) eq 'HASH') { 2023: $remote = $remotesession->{'remote'}; 2024: } 2025: my $hostedsession = &get_usersession_config($clienthomedom,'hostedsession'); 2026: if (ref($hostedsession) eq 'HASH') { 2027: $hosted = $hostedsession->{'hosted'}; 2028: } 2029: my $loncaparev = $clientversion; 2030: if ($loncaparev eq '') { 2031: $loncaparev = $Apache::lonnet::loncaparevs{$clientname}; 2032: } 2033: $canhost = &Apache::lonnet::can_host_session($udom,$clientname, 2034: $loncaparev, 2035: $remote,$hosted); 2036: } 2037: } 2038: if ($canhost) { 2039: &Reply( $client, "authorized\n", $userinput); 2040: } else { 2041: &Reply( $client, "not_allowed_to_host\n", $userinput); 2042: } 2043: # 2044: # Bad credentials: Failed to authorize 2045: # 2046: } else { 2047: &Failure( $client, "non_authorized\n", $userinput); 2048: } 2049: 2050: return 1; 2051: } 2052: &register_handler("auth", \&authenticate_handler, 1, 1, 0); 2053: 2054: # 2055: # Change a user's password. Note that this function is complicated by 2056: # the fact that a user may be authenticated in more than one way: 2057: # At present, we are not able to change the password for all types of 2058: # authentication methods. Only for: 2059: # unix - unix password or shadow passoword style authentication. 2060: # local - Locally written authentication mechanism. 2061: # For now, kerb4 and kerb5 password changes are not supported and result 2062: # in an error. 2063: # FUTURE WORK: 2064: # Support kerberos passwd changes? 2065: # Parameters: 2066: # $cmd - The command that got us here. 2067: # $tail - Tail of the command (remaining parameters). 2068: # $client - File descriptor connected to client. 2069: # Returns 2070: # 0 - Requested to exit, caller should shut down. 2071: # 1 - Continue processing. 2072: # Implicit inputs: 2073: # The authentication systems describe above have their own forms of implicit 2074: # input into the authentication process that are described above. 2075: sub change_password_handler { 2076: my ($cmd, $tail, $client) = @_; 2077: 2078: my $userinput = $cmd.":".$tail; # Reconstruct client's string. 2079: 2080: # 2081: # udom - user's domain. 2082: # uname - Username. 2083: # upass - Current password. 2084: # npass - New password. 2085: # context - Context in which this was called 2086: # (preferences or reset_by_email). 2087: # lonhost - HostID of server where request originated 2088: 2089: my ($udom,$uname,$upass,$npass,$context,$lonhost)=split(/:/,$tail); 2090: 2091: $upass=&unescape($upass); 2092: $npass=&unescape($npass); 2093: &Debug("Trying to change password for $uname"); 2094: 2095: # First require that the user can be authenticated with their 2096: # old password unless context was 'reset_by_email': 2097: 2098: my ($validated,$failure); 2099: if ($context eq 'reset_by_email') { 2100: if ($lonhost eq '') { 2101: $failure = 'invalid_client'; 2102: } else { 2103: $validated = 1; 2104: } 2105: } else { 2106: $validated = &validate_user($udom, $uname, $upass); 2107: } 2108: if($validated) { 2109: my $realpasswd = &get_auth_type($udom, $uname); # Defined since authd. 2110: my ($howpwd,$contentpwd)=split(/:/,$realpasswd); 2111: my $notunique; 2112: if ($howpwd eq 'internal') { 2113: &Debug("internal auth"); 2114: my $ncpass = &hash_passwd($udom,$npass); 2115: my (undef,$method,@rest) = split(/!/,$contentpwd); 2116: if ($method eq 'bcrypt') { 2117: my %passwdconf = &Apache::lonnet::get_passwdconf($udom); 2118: if (($passwdconf{'numsaved'}) && ($passwdconf{'numsaved'} =~ /^\d+$/)) { 2119: my @oldpasswds; 2120: my $userpath = &propath($udom,$uname); 2121: my $fullpath = $userpath.'/oldpasswds'; 2122: if (-d $userpath) { 2123: my @oldfiles; 2124: if (-e $fullpath) { 2125: if (opendir(my $dir,$fullpath)) { 2126: (@oldfiles) = grep(/^\d+$/,readdir($dir)); 2127: closedir($dir); 2128: } 2129: if (@oldfiles) { 2130: @oldfiles = sort { $b <=> $a } (@oldfiles); 2131: my $numremoved = 0; 2132: for (my $i=0; $i<@oldfiles; $i++) { 2133: if ($i>=$passwdconf{'numsaved'}) { 2134: if (-f "$fullpath/$oldfiles[$i]") { 2135: if (unlink("$fullpath/$oldfiles[$i]")) { 2136: $numremoved ++; 2137: } 2138: } 2139: } elsif (open(my $fh,'<',"$fullpath/$oldfiles[$i]")) { 2140: while (my $line = <$fh>) { 2141: push(@oldpasswds,$line); 2142: } 2143: close($fh); 2144: } 2145: } 2146: if ($numremoved) { 2147: &logthis("unlinked $numremoved old password files for $uname:$udom"); 2148: } 2149: } 2150: } 2151: push(@oldpasswds,$contentpwd); 2152: foreach my $item (@oldpasswds) { 2153: my (undef,$method,@rest) = split(/!/,$item); 2154: if ($method eq 'bcrypt') { 2155: my $result = &hash_passwd($udom,$npass,@rest); 2156: if ($result eq $item) { 2157: $notunique = 1; 2158: last; 2159: } 2160: } 2161: } 2162: unless ($notunique) { 2163: unless (-e $fullpath) { 2164: if (&mkpath("$fullpath/")) { 2165: chmod(0700,$fullpath); 2166: } 2167: } 2168: if (-d $fullpath) { 2169: my $now = time; 2170: if (open(my $fh,'>',"$fullpath/$now")) { 2171: print $fh $contentpwd; 2172: close($fh); 2173: chmod(0400,"$fullpath/$now"); 2174: } 2175: } 2176: } 2177: } 2178: } 2179: } 2180: if ($notunique) { 2181: my $msg="Result of password change for $uname:$udom - password matches one used before"; 2182: if ($lonhost) { 2183: $msg .= " - request originated from: $lonhost"; 2184: } 2185: &logthis($msg); 2186: &Reply($client, "prioruse\n", $userinput); 2187: } elsif (&rewrite_password_file($udom, $uname, "internal:$ncpass")) { 2188: my $msg="Result of password change for $uname: pwchange_success"; 2189: if ($lonhost) { 2190: $msg .= " - request originated from: $lonhost"; 2191: } 2192: &logthis($msg); 2193: &update_passwd_history($uname,$udom,$howpwd,$context); 2194: &Reply($client, "ok\n", $userinput); 2195: } else { 2196: &logthis("Unable to open $uname passwd " 2197: ."to change password"); 2198: &Failure( $client, "non_authorized\n",$userinput); 2199: } 2200: } elsif ($howpwd eq 'unix' && $context ne 'reset_by_email') { 2201: my $result = &change_unix_password($uname, $npass); 2202: if ($result eq 'ok') { 2203: &update_passwd_history($uname,$udom,$howpwd,$context); 2204: } 2205: &logthis("Result of password change for $uname: ". 2206: $result); 2207: &Reply($client, \$result, $userinput); 2208: } else { 2209: # this just means that the current password mode is not 2210: # one we know how to change (e.g the kerberos auth modes or 2211: # locally written auth handler). 2212: # 2213: &Failure( $client, "auth_mode_error\n", $userinput); 2214: } 2215: } else { 2216: if ($failure eq '') { 2217: $failure = 'non_authorized'; 2218: } 2219: &Failure( $client, "$failure\n", $userinput); 2220: } 2221: 2222: return 1; 2223: } 2224: &register_handler("passwd", \&change_password_handler, 1, 1, 0); 2225: 2226: sub hash_passwd { 2227: my ($domain,$plainpass,@rest) = @_; 2228: my ($salt,$cost); 2229: if (@rest) { 2230: $cost = $rest[0]; 2231: # salt is first 22 characters, base-64 encoded by bcrypt 2232: my $plainsalt = substr($rest[1],0,22); 2233: $salt = Crypt::Eksblowfish::Bcrypt::de_base64($plainsalt); 2234: } else { 2235: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain); 2236: my $defaultcost = $domdefaults{'intauth_cost'}; 2237: if (($defaultcost eq '') || ($defaultcost =~ /D/)) { 2238: $cost = 10; 2239: } else { 2240: $cost = $defaultcost; 2241: } 2242: # Generate random 16-octet base64 salt 2243: $salt = ""; 2244: $salt .= pack("C", int rand(256)) for 1..16; 2245: } 2246: my $hash = &Crypt::Eksblowfish::Bcrypt::bcrypt_hash({ 2247: key_nul => 1, 2248: cost => $cost, 2249: salt => $salt, 2250: }, Digest::SHA::sha512(Encode::encode('UTF-8',$plainpass))); 2251: 2252: my $result = join("!", "", "bcrypt", sprintf("%02d",$cost), 2253: &Crypt::Eksblowfish::Bcrypt::en_base64($salt). 2254: &Crypt::Eksblowfish::Bcrypt::en_base64($hash)); 2255: return $result; 2256: } 2257: 2258: # 2259: # Create a new user. User in this case means a lon-capa user. 2260: # The user must either already exist in some authentication realm 2261: # like kerberos or the /etc/passwd. If not, a user completely local to 2262: # this loncapa system is created. 2263: # 2264: # Parameters: 2265: # $cmd - The command that got us here. 2266: # $tail - Tail of the command (remaining parameters). 2267: # $client - File descriptor connected to client. 2268: # Returns 2269: # 0 - Requested to exit, caller should shut down. 2270: # 1 - Continue processing. 2271: # Implicit inputs: 2272: # The authentication systems describe above have their own forms of implicit 2273: # input into the authentication process that are described above. 2274: sub add_user_handler { 2275: 2276: my ($cmd, $tail, $client) = @_; 2277: 2278: 2279: my ($udom,$uname,$umode,$npass)=split(/:/,$tail); 2280: my $userinput = $cmd.":".$tail; # Reconstruct the full request line. 2281: 2282: &Debug("cmd =".$cmd." $udom =".$udom." uname=".$uname); 2283: 2284: 2285: if($udom eq $currentdomainid) { # Reject new users for other domains... 2286: 2287: my $oldumask=umask(0077); 2288: chomp($npass); 2289: $npass=&unescape($npass); 2290: my $passfilename = &password_path($udom, $uname); 2291: &Debug("Password file created will be:".$passfilename); 2292: if (-e $passfilename) { 2293: &Failure( $client, "already_exists\n", $userinput); 2294: } else { 2295: my $fperror=''; 2296: if (!&mkpath($passfilename)) { 2297: $fperror="error: ".($!+0)." mkdir failed while attempting " 2298: ."makeuser"; 2299: } 2300: unless ($fperror) { 2301: my $result=&make_passwd_file($uname,$udom,$umode,$npass, 2302: $passfilename,'makeuser'); 2303: &Reply($client,\$result, $userinput); #BUGBUG - could be fail 2304: } else { 2305: &Failure($client, \$fperror, $userinput); 2306: } 2307: } 2308: umask($oldumask); 2309: } else { 2310: &Failure($client, "not_right_domain\n", 2311: $userinput); # Even if we are multihomed. 2312: 2313: } 2314: return 1; 2315: 2316: } 2317: &register_handler("makeuser", \&add_user_handler, 1, 1, 0); 2318: 2319: # 2320: # Change the authentication method of a user. Note that this may 2321: # also implicitly change the user's password if, for example, the user is 2322: # joining an existing authentication realm. Known authentication realms at 2323: # this time are: 2324: # internal - Purely internal password file (only loncapa knows this user) 2325: # local - Institutionally written authentication module. 2326: # unix - Unix user (/etc/passwd with or without /etc/shadow). 2327: # kerb4 - kerberos version 4 2328: # kerb5 - kerberos version 5 2329: # 2330: # Parameters: 2331: # $cmd - The command that got us here. 2332: # $tail - Tail of the command (remaining parameters). 2333: # $client - File descriptor connected to client. 2334: # Returns 2335: # 0 - Requested to exit, caller should shut down. 2336: # 1 - Continue processing. 2337: # Implicit inputs: 2338: # The authentication systems describe above have their own forms of implicit 2339: # input into the authentication process that are described above. 2340: # NOTE: 2341: # This is also used to change the authentication credential values (e.g. passwd). 2342: # 2343: # 2344: sub change_authentication_handler { 2345: 2346: my ($cmd, $tail, $client) = @_; 2347: 2348: my $userinput = "$cmd:$tail"; # Reconstruct user input. 2349: 2350: my ($udom,$uname,$umode,$npass)=split(/:/,$tail); 2351: &Debug("cmd = ".$cmd." domain= ".$udom."uname =".$uname." umode= ".$umode); 2352: if ($udom ne $currentdomainid) { 2353: &Failure( $client, "not_right_domain\n", $client); 2354: } else { 2355: 2356: chomp($npass); 2357: 2358: $npass=&unescape($npass); 2359: my $oldauth = &get_auth_type($udom, $uname); # Get old auth info. 2360: my $passfilename = &password_path($udom, $uname); 2361: if ($passfilename) { # Not allowed to create a new user!! 2362: # If just changing the unix passwd. need to arrange to run 2363: # passwd since otherwise make_passwd_file will fail as 2364: # creation of unix authenticated users is no longer supported 2365: # except from the command line, when running make_domain_coordinator.pl 2366: 2367: if(($oldauth =~/^unix/) && ($umode eq "unix")) { 2368: my $result = &change_unix_password($uname, $npass); 2369: &logthis("Result of password change for $uname: ".$result); 2370: if ($result eq "ok") { 2371: &update_passwd_history($uname,$udom,$umode,'changeuserauth'); 2372: &Reply($client, \$result); 2373: } else { 2374: &Failure($client, \$result); 2375: } 2376: } else { 2377: my $result=&make_passwd_file($uname,$udom,$umode,$npass, 2378: $passfilename,'changeuserauth'); 2379: # 2380: # If the current auth mode is internal, and the old auth mode was 2381: # unix, or krb*, and the user is an author for this domain, 2382: # re-run manage_permissions for that role in order to be able 2383: # to take ownership of the construction space back to www:www 2384: # 2385: 2386: 2387: &Reply($client, \$result, $userinput); 2388: } 2389: 2390: 2391: } else { 2392: &Failure($client, "non_authorized\n", $userinput); # Fail the user now. 2393: } 2394: } 2395: return 1; 2396: } 2397: &register_handler("changeuserauth", \&change_authentication_handler, 1,1, 0); 2398: 2399: sub update_passwd_history { 2400: my ($uname,$udom,$umode,$context) = @_; 2401: my $proname=&propath($udom,$uname); 2402: my $now = time; 2403: if (open(my $fh,">>$proname/passwd.log")) { 2404: print $fh "$now:$umode:$context\n"; 2405: close($fh); 2406: } 2407: return; 2408: } 2409: 2410: sub inst_unamemap_check { 2411: my ($cmd, $tail, $client) = @_; 2412: my $userinput = "$cmd:$tail"; 2413: my %rulecheck; 2414: my $outcome; 2415: my ($udom,$uname,@rules) = split(/:/,$tail); 2416: $udom = &unescape($udom); 2417: $uname = &unescape($uname); 2418: @rules = map {&unescape($_);} (@rules); 2419: eval { 2420: local($SIG{__DIE__})='DEFAULT'; 2421: $outcome = &localenroll::unamemap_check($udom,$uname,\@rules,\%rulecheck); 2422: }; 2423: if (!$@) { 2424: if ($outcome eq 'ok') { 2425: my $result=''; 2426: foreach my $key (keys(%rulecheck)) { 2427: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&'; 2428: } 2429: &Reply($client,\$result,$userinput); 2430: } else { 2431: &Reply($client,"error\n", $userinput); 2432: } 2433: } else { 2434: &Failure($client,"unknown_cmd\n",$userinput); 2435: } 2436: } 2437: &register_handler("instunamemapcheck",\&inst_unamemap_check,0,1,0); 2438: 2439: 2440: # 2441: # Determines if this is the home server for a user. The home server 2442: # for a user will have his/her lon-capa passwd file. Therefore all we need 2443: # to do is determine if this file exists. 2444: # 2445: # Parameters: 2446: # $cmd - The command that got us here. 2447: # $tail - Tail of the command (remaining parameters). 2448: # $client - File descriptor connected to client. 2449: # Returns 2450: # 0 - Requested to exit, caller should shut down. 2451: # 1 - Continue processing. 2452: # Implicit inputs: 2453: # The authentication systems describe above have their own forms of implicit 2454: # input into the authentication process that are described above. 2455: # 2456: sub is_home_handler { 2457: my ($cmd, $tail, $client) = @_; 2458: 2459: my $userinput = "$cmd:$tail"; 2460: 2461: my ($udom,$uname)=split(/:/,$tail); 2462: chomp($uname); 2463: my $passfile = &password_filename($udom, $uname); 2464: if($passfile) { 2465: &Reply( $client, "found\n", $userinput); 2466: } else { 2467: &Failure($client, "not_found\n", $userinput); 2468: } 2469: return 1; 2470: } 2471: &register_handler("home", \&is_home_handler, 0,1,0); 2472: 2473: # 2474: # Process an update request for a resource. 2475: # A resource has been modified that we hold a subscription to. 2476: # If the resource is not local, then we must update, or at least invalidate our 2477: # cached copy of the resource. 2478: # Parameters: 2479: # $cmd - The command that got us here. 2480: # $tail - Tail of the command (remaining parameters). 2481: # $client - File descriptor connected to client. 2482: # Returns 2483: # 0 - Requested to exit, caller should shut down. 2484: # 1 - Continue processing. 2485: # Implicit inputs: 2486: # The authentication systems describe above have their own forms of implicit 2487: # input into the authentication process that are described above. 2488: # 2489: sub update_resource_handler { 2490: 2491: my ($cmd, $tail, $client) = @_; 2492: 2493: my $userinput = "$cmd:$tail"; 2494: 2495: my $fname= $tail; # This allows interactive testing 2496: 2497: 2498: my $ownership=ishome($fname); 2499: if ($ownership eq 'not_owner') { 2500: if (-e $fname) { 2501: # Delete preview file, if exists 2502: unlink("$fname.tmp"); 2503: # Get usage stats 2504: my ($dev,$ino,$mode,$nlink,$uid,$gid,$rdev,$size, 2505: $atime,$mtime,$ctime,$blksize,$blocks)=stat($fname); 2506: my $now=time; 2507: my $since=$now-$atime; 2508: # If the file has not been used within lonExpire seconds, 2509: # unsubscribe from it and delete local copy 2510: if ($since>$perlvar{'lonExpire'}) { 2511: my $reply=&Apache::lonnet::reply("unsub:$fname","$clientname"); 2512: &devalidate_meta_cache($fname); 2513: unlink("$fname"); 2514: unlink("$fname.meta"); 2515: } else { 2516: # Yes, this is in active use. Get a fresh copy. Since it might be in 2517: # very active use and huge (like a movie), copy it to "in.transfer" filename first. 2518: my $transname="$fname.in.transfer"; 2519: my $remoteurl=&Apache::lonnet::reply("sub:$fname","$clientname"); 2520: my $response; 2521: # FIXME: cannot replicate files that take more than two minutes to transfer? 2522: # alarm(120); 2523: # FIXME: this should use the LWP mechanism, not internal alarms. 2524: alarm(1200); 2525: { 2526: my $ua=new LWP::UserAgent; 2527: my $request=new HTTP::Request('GET',"$remoteurl"); 2528: $response=$ua->request($request,$transname); 2529: } 2530: alarm(0); 2531: if ($response->is_error()) { 2532: my $reply=&Apache::lonnet::reply("unsub:$fname","$clientname"); 2533: &devalidate_meta_cache($fname); 2534: if (-e $transname) { 2535: unlink($transname); 2536: } 2537: unlink($fname); 2538: my $message=$response->status_line; 2539: &logthis("LWP GET: $message for $fname ($remoteurl)"); 2540: } else { 2541: if ($remoteurl!~/\.meta$/) { 2542: # FIXME: isn't there an internal LWP mechanism for this? 2543: alarm(120); 2544: { 2545: my $ua=new LWP::UserAgent; 2546: my $mrequest=new HTTP::Request('GET',$remoteurl.'.meta'); 2547: my $mresponse=$ua->request($mrequest,$fname.'.meta'); 2548: if ($mresponse->is_error()) { 2549: unlink($fname.'.meta'); 2550: } 2551: } 2552: alarm(0); 2553: } 2554: # we successfully transfered, copy file over to real name 2555: rename($transname,$fname); 2556: &devalidate_meta_cache($fname); 2557: } 2558: } 2559: &Reply( $client, "ok\n", $userinput); 2560: } else { 2561: &Failure($client, "not_found\n", $userinput); 2562: } 2563: } else { 2564: &Failure($client, "rejected\n", $userinput); 2565: } 2566: return 1; 2567: } 2568: &register_handler("update", \&update_resource_handler, 0 ,1, 0); 2569: 2570: sub devalidate_meta_cache { 2571: my ($url) = @_; 2572: use Cache::Memcached; 2573: my $memcache = new Cache::Memcached({'servers'=>['127.0.0.1:11211']}); 2574: $url = &Apache::lonnet::declutter($url); 2575: $url =~ s-\.meta$--; 2576: my $id = &escape('meta:'.$url); 2577: $memcache->delete($id); 2578: } 2579: 2580: # 2581: # Fetch a user file from a remote server to the user's home directory 2582: # userfiles subdir. 2583: # Parameters: 2584: # $cmd - The command that got us here. 2585: # $tail - Tail of the command (remaining parameters). 2586: # $client - File descriptor connected to client. 2587: # Returns 2588: # 0 - Requested to exit, caller should shut down. 2589: # 1 - Continue processing. 2590: # 2591: sub fetch_user_file_handler { 2592: 2593: my ($cmd, $tail, $client) = @_; 2594: 2595: my $userinput = "$cmd:$tail"; 2596: my $fname = $tail; 2597: my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|); 2598: my $udir=&propath($udom,$uname).'/userfiles'; 2599: unless (-e $udir) { 2600: mkdir($udir,0770); 2601: } 2602: Debug("fetch user file for $fname"); 2603: if (-e $udir) { 2604: $ufile=~s/^[\.\~]+//; 2605: 2606: # IF necessary, create the path right down to the file. 2607: # Note that any regular files in the way of this path are 2608: # wiped out to deal with some earlier folly of mine. 2609: 2610: if (!&mkpath($udir.'/'.$ufile)) { 2611: &Failure($client, "unable_to_create\n", $userinput); 2612: } 2613: 2614: my $destname=$udir.'/'.$ufile; 2615: my $transname=$udir.'/'.$ufile.'.in.transit'; 2616: my $clientprotocol=$Apache::lonnet::protocol{$clientname}; 2617: $clientprotocol = 'http' if ($clientprotocol ne 'https'); 2618: my $clienthost = &Apache::lonnet::hostname($clientname); 2619: my $remoteurl=$clientprotocol.'://'.$clienthost.'/userfiles/'.$fname; 2620: my $response; 2621: Debug("Remote URL : $remoteurl Transfername $transname Destname: $destname"); 2622: alarm(120); 2623: { 2624: my $ua=new LWP::UserAgent; 2625: my $request=new HTTP::Request('GET',"$remoteurl"); 2626: $response=$ua->request($request,$transname); 2627: } 2628: alarm(0); 2629: if ($response->is_error()) { 2630: unlink($transname); 2631: my $message=$response->status_line; 2632: &logthis("LWP GET: $message for $fname ($remoteurl)"); 2633: &Failure($client, "failed\n", $userinput); 2634: } else { 2635: Debug("Renaming $transname to $destname"); 2636: if (!rename($transname,$destname)) { 2637: &logthis("Unable to move $transname to $destname"); 2638: unlink($transname); 2639: &Failure($client, "failed\n", $userinput); 2640: } else { 2641: if ($fname =~ /^default.+\.(page|sequence)$/) { 2642: my ($major,$minor) = split(/\./,$clientversion); 2643: if (($major < 2) || ($major == 2 && $minor < 11)) { 2644: my $now = time; 2645: &Apache::lonnet::do_cache_new('crschange',$udom.'_'.$uname,$now,600); 2646: my $key = &escape('internal.contentchange'); 2647: my $what = "$key=$now"; 2648: my $hashref = &tie_user_hash($udom,$uname,'environment', 2649: &GDBM_WRCREAT(),"P",$what); 2650: if ($hashref) { 2651: $hashref->{$key}=$now; 2652: if (!&untie_user_hash($hashref)) { 2653: &logthis("error: ".($!+0)." untie (GDBM) failed ". 2654: "when updating internal.contentchange"); 2655: } 2656: } 2657: } 2658: } 2659: &Reply($client, "ok\n", $userinput); 2660: } 2661: } 2662: } else { 2663: &Failure($client, "not_home\n", $userinput); 2664: } 2665: return 1; 2666: } 2667: &register_handler("fetchuserfile", \&fetch_user_file_handler, 0, 1, 0); 2668: 2669: # 2670: # Remove a file from a user's home directory userfiles subdirectory. 2671: # Parameters: 2672: # cmd - the Lond request keyword that got us here. 2673: # tail - the part of the command past the keyword. 2674: # client- File descriptor connected with the client. 2675: # 2676: # Returns: 2677: # 1 - Continue processing. 2678: sub remove_user_file_handler { 2679: my ($cmd, $tail, $client) = @_; 2680: 2681: my ($fname) = split(/:/, $tail); # Get rid of any tailing :'s lonc may have sent. 2682: 2683: my ($udom,$uname,$ufile) = ($fname =~ m|^([^/]+)/([^/]+)/(.+)$|); 2684: if ($ufile =~m|/\.\./|) { 2685: # any files paths with /../ in them refuse 2686: # to deal with 2687: &Failure($client, "refused\n", "$cmd:$tail"); 2688: } else { 2689: my $udir = &propath($udom,$uname); 2690: if (-e $udir) { 2691: my $file=$udir.'/userfiles/'.$ufile; 2692: if (-e $file) { 2693: # 2694: # If the file is a regular file unlink is fine... 2695: # However it's possible the client wants a dir 2696: # removed, in which case rmdir is more appropriate 2697: # Note: rmdir will only remove an empty directory. 2698: # 2699: if (-f $file){ 2700: unlink($file); 2701: # for html files remove the associated .bak file 2702: # which may have been created by the editor. 2703: if ($ufile =~ m{^((docs|supplemental)/(?:\d+|default)/\d+(?:|/.+)/)[^/]+\.x?html?$}i) { 2704: my $path = $1; 2705: if (-e $file.'.bak') { 2706: unlink($file.'.bak'); 2707: } 2708: } 2709: } elsif(-d $file) { 2710: rmdir($file); 2711: } 2712: if (-e $file) { 2713: # File is still there after we deleted it ?!? 2714: 2715: &Failure($client, "failed\n", "$cmd:$tail"); 2716: } else { 2717: &Reply($client, "ok\n", "$cmd:$tail"); 2718: } 2719: } else { 2720: &Failure($client, "not_found\n", "$cmd:$tail"); 2721: } 2722: } else { 2723: &Failure($client, "not_home\n", "$cmd:$tail"); 2724: } 2725: } 2726: return 1; 2727: } 2728: &register_handler("removeuserfile", \&remove_user_file_handler, 0,1,0); 2729: 2730: # 2731: # make a directory in a user's home directory userfiles subdirectory. 2732: # Parameters: 2733: # cmd - the Lond request keyword that got us here. 2734: # tail - the part of the command past the keyword. 2735: # client- File descriptor connected with the client. 2736: # 2737: # Returns: 2738: # 1 - Continue processing. 2739: sub mkdir_user_file_handler { 2740: my ($cmd, $tail, $client) = @_; 2741: 2742: my ($dir) = split(/:/, $tail); # Get rid of any tailing :'s lonc may have sent. 2743: $dir=&unescape($dir); 2744: my ($udom,$uname,$ufile) = ($dir =~ m|^([^/]+)/([^/]+)/(.+)$|); 2745: if ($ufile =~m|/\.\./|) { 2746: # any files paths with /../ in them refuse 2747: # to deal with 2748: &Failure($client, "refused\n", "$cmd:$tail"); 2749: } else { 2750: my $udir = &propath($udom,$uname); 2751: if (-e $udir) { 2752: my $newdir=$udir.'/userfiles/'.$ufile.'/'; 2753: if (!&mkpath($newdir)) { 2754: &Failure($client, "failed\n", "$cmd:$tail"); 2755: } 2756: &Reply($client, "ok\n", "$cmd:$tail"); 2757: } else { 2758: &Failure($client, "not_home\n", "$cmd:$tail"); 2759: } 2760: } 2761: return 1; 2762: } 2763: &register_handler("mkdiruserfile", \&mkdir_user_file_handler, 0,1,0); 2764: 2765: # 2766: # rename a file in a user's home directory userfiles subdirectory. 2767: # Parameters: 2768: # cmd - the Lond request keyword that got us here. 2769: # tail - the part of the command past the keyword. 2770: # client- File descriptor connected with the client. 2771: # 2772: # Returns: 2773: # 1 - Continue processing. 2774: sub rename_user_file_handler { 2775: my ($cmd, $tail, $client) = @_; 2776: 2777: my ($udom,$uname,$old,$new) = split(/:/, $tail); 2778: $old=&unescape($old); 2779: $new=&unescape($new); 2780: if ($new =~m|/\.\./| || $old =~m|/\.\./|) { 2781: # any files paths with /../ in them refuse to deal with 2782: &Failure($client, "refused\n", "$cmd:$tail"); 2783: } else { 2784: my $udir = &propath($udom,$uname); 2785: if (-e $udir) { 2786: my $oldfile=$udir.'/userfiles/'.$old; 2787: my $newfile=$udir.'/userfiles/'.$new; 2788: if (-e $newfile) { 2789: &Failure($client, "exists\n", "$cmd:$tail"); 2790: } elsif (! -e $oldfile) { 2791: &Failure($client, "not_found\n", "$cmd:$tail"); 2792: } else { 2793: if (!rename($oldfile,$newfile)) { 2794: &Failure($client, "failed\n", "$cmd:$tail"); 2795: } else { 2796: &Reply($client, "ok\n", "$cmd:$tail"); 2797: } 2798: } 2799: } else { 2800: &Failure($client, "not_home\n", "$cmd:$tail"); 2801: } 2802: } 2803: return 1; 2804: } 2805: &register_handler("renameuserfile", \&rename_user_file_handler, 0,1,0); 2806: 2807: # 2808: # Checks if the specified user has an active session on the server 2809: # return ok if so, not_found if not 2810: # 2811: # Parameters: 2812: # cmd - The request keyword that dispatched to tus. 2813: # tail - The tail of the request (colon separated parameters). 2814: # client - Filehandle open on the client. 2815: # Return: 2816: # 1. 2817: sub user_has_session_handler { 2818: my ($cmd, $tail, $client) = @_; 2819: 2820: my ($udom, $uname) = map { &unescape($_) } (split(/:/, $tail)); 2821: 2822: opendir(DIR,$perlvar{'lonIDsDir'}); 2823: my $filename; 2824: while ($filename=readdir(DIR)) { 2825: last if ($filename=~/^\Q$uname\E_\d+_\Q$udom\E_/); 2826: } 2827: if ($filename) { 2828: &Reply($client, "ok\n", "$cmd:$tail"); 2829: } else { 2830: &Failure($client, "not_found\n", "$cmd:$tail"); 2831: } 2832: return 1; 2833: 2834: } 2835: &register_handler("userhassession", \&user_has_session_handler, 0,1,0); 2836: 2837: sub del_usersession_handler { 2838: my ($cmd, $tail, $client) = @_; 2839: 2840: my $result; 2841: my ($udom, $uname) = map { &unescape($_) } (split(/:/, $tail)); 2842: if (($udom =~ /^$LONCAPA::match_domain$/) && ($uname =~ /^$LONCAPA::match_username$/)) { 2843: my $lonidsdir = $perlvar{'lonIDsDir'}; 2844: if (-d $lonidsdir) { 2845: if (opendir(DIR,$lonidsdir)) { 2846: my $filename; 2847: while ($filename=readdir(DIR)) { 2848: if ($filename=~/^\Q$uname\E_\d+_\Q$udom\E_/) { 2849: if (tie(my %oldenv,'GDBM_File',"$lonidsdir/$filename", 2850: &GDBM_READER(),0640)) { 2851: my $linkedfile; 2852: if (exists($oldenv{'user.linkedenv'})) { 2853: $linkedfile = $oldenv{'user.linkedenv'}; 2854: } 2855: untie(%oldenv); 2856: $result = unlink("$lonidsdir/$filename"); 2857: if ($result) { 2858: if ($linkedfile =~ /^[a-f0-9]+_linked$/) { 2859: if (-l "$lonidsdir/$linkedfile.id") { 2860: unlink("$lonidsdir/$linkedfile.id"); 2861: } 2862: } 2863: } 2864: } else { 2865: $result = unlink("$lonidsdir/$filename"); 2866: } 2867: last; 2868: } 2869: } 2870: } 2871: } 2872: if ($result == 1) { 2873: &Reply($client, "$result\n", "$cmd:$tail"); 2874: } else { 2875: &Reply($client, "not_found\n", "$cmd:$tail"); 2876: } 2877: } else { 2878: &Failure($client, "invalid_user\n", "$cmd:$tail"); 2879: } 2880: return 1; 2881: } 2882: 2883: &register_handler("delusersession", \&del_usersession_handler, 0,1,0); 2884: 2885: # 2886: # Authenticate access to a user file by checking that the token the user's 2887: # passed also exists in their session file 2888: # 2889: # Parameters: 2890: # cmd - The request keyword that dispatched to tus. 2891: # tail - The tail of the request (colon separated parameters). 2892: # client - Filehandle open on the client. 2893: # Return: 2894: # 1. 2895: sub token_auth_user_file_handler { 2896: my ($cmd, $tail, $client) = @_; 2897: 2898: my ($fname, $session) = split(/:/, $tail); 2899: 2900: chomp($session); 2901: my $reply="non_auth"; 2902: my $file = $perlvar{'lonIDsDir'}.'/'.$session.'.id'; 2903: if (open(ENVIN,"$file")) { 2904: flock(ENVIN,LOCK_SH); 2905: tie(my %disk_env,'GDBM_File',"$file",&GDBM_READER(),0640); 2906: if (exists($disk_env{"userfile.$fname"})) { 2907: $reply="ok"; 2908: } else { 2909: foreach my $envname (keys(%disk_env)) { 2910: if ($envname=~ m|^userfile\.\Q$fname\E|) { 2911: $reply="ok"; 2912: last; 2913: } 2914: } 2915: } 2916: untie(%disk_env); 2917: close(ENVIN); 2918: &Reply($client, \$reply, "$cmd:$tail"); 2919: } else { 2920: &Failure($client, "invalid_token\n", "$cmd:$tail"); 2921: } 2922: return 1; 2923: 2924: } 2925: &register_handler("tokenauthuserfile", \&token_auth_user_file_handler, 0,1,0); 2926: 2927: # 2928: # Unsubscribe from a resource. 2929: # 2930: # Parameters: 2931: # $cmd - The command that got us here. 2932: # $tail - Tail of the command (remaining parameters). 2933: # $client - File descriptor connected to client. 2934: # Returns 2935: # 0 - Requested to exit, caller should shut down. 2936: # 1 - Continue processing. 2937: # 2938: sub unsubscribe_handler { 2939: my ($cmd, $tail, $client) = @_; 2940: 2941: my $userinput= "$cmd:$tail"; 2942: 2943: my ($fname) = split(/:/,$tail); # Split in case there's extrs. 2944: 2945: &Debug("Unsubscribing $fname"); 2946: if (-e $fname) { 2947: &Debug("Exists"); 2948: &Reply($client, &unsub($fname,$clientip), $userinput); 2949: } else { 2950: &Failure($client, "not_found\n", $userinput); 2951: } 2952: return 1; 2953: } 2954: &register_handler("unsub", \&unsubscribe_handler, 0, 1, 0); 2955: 2956: # Subscribe to a resource 2957: # 2958: # Parameters: 2959: # $cmd - The command that got us here. 2960: # $tail - Tail of the command (remaining parameters). 2961: # $client - File descriptor connected to client. 2962: # Returns 2963: # 0 - Requested to exit, caller should shut down. 2964: # 1 - Continue processing. 2965: # 2966: sub subscribe_handler { 2967: my ($cmd, $tail, $client)= @_; 2968: 2969: my $userinput = "$cmd:$tail"; 2970: 2971: &Reply( $client, &subscribe($userinput,$clientip), $userinput); 2972: 2973: return 1; 2974: } 2975: &register_handler("sub", \&subscribe_handler, 0, 1, 0); 2976: 2977: # 2978: # Determine the latest version of a resource (it looks for the highest 2979: # past version and then returns that +1) 2980: # 2981: # Parameters: 2982: # $cmd - The command that got us here. 2983: # $tail - Tail of the command (remaining parameters). 2984: # (Should consist of an absolute path to a file) 2985: # $client - File descriptor connected to client. 2986: # Returns 2987: # 0 - Requested to exit, caller should shut down. 2988: # 1 - Continue processing. 2989: # 2990: sub current_version_handler { 2991: my ($cmd, $tail, $client) = @_; 2992: 2993: my $userinput= "$cmd:$tail"; 2994: 2995: my $fname = $tail; 2996: &Reply( $client, &currentversion($fname)."\n", $userinput); 2997: return 1; 2998: 2999: } 3000: &register_handler("currentversion", \&current_version_handler, 0, 1, 0); 3001: 3002: # Make an entry in a user's activity log. 3003: # 3004: # Parameters: 3005: # $cmd - The command that got us here. 3006: # $tail - Tail of the command (remaining parameters). 3007: # $client - File descriptor connected to client. 3008: # Returns 3009: # 0 - Requested to exit, caller should shut down. 3010: # 1 - Continue processing. 3011: # 3012: sub activity_log_handler { 3013: my ($cmd, $tail, $client) = @_; 3014: 3015: 3016: my $userinput= "$cmd:$tail"; 3017: 3018: my ($udom,$uname,$what)=split(/:/,$tail); 3019: chomp($what); 3020: my $proname=&propath($udom,$uname); 3021: my $now=time; 3022: my $hfh; 3023: if ($hfh=IO::File->new(">>$proname/activity.log")) { 3024: print $hfh "$now:$clientname:$what\n"; 3025: &Reply( $client, "ok\n", $userinput); 3026: } else { 3027: &Failure($client, "error: ".($!+0)." IO::File->new Failed " 3028: ."while attempting log\n", 3029: $userinput); 3030: } 3031: 3032: return 1; 3033: } 3034: &register_handler("log", \&activity_log_handler, 0, 1, 0); 3035: 3036: # 3037: # Put a namespace entry in a user profile hash. 3038: # My druthers would be for this to be an encrypted interaction too. 3039: # anything that might be an inadvertent covert channel about either 3040: # user authentication or user personal information.... 3041: # 3042: # Parameters: 3043: # $cmd - The command that got us here. 3044: # $tail - Tail of the command (remaining parameters). 3045: # $client - File descriptor connected to client. 3046: # Returns 3047: # 0 - Requested to exit, caller should shut down. 3048: # 1 - Continue processing. 3049: # 3050: sub put_user_profile_entry { 3051: my ($cmd, $tail, $client) = @_; 3052: 3053: my $userinput = "$cmd:$tail"; 3054: 3055: my ($udom,$uname,$namespace,$what) =split(/:/,$tail,4); 3056: if ($namespace ne 'roles') { 3057: chomp($what); 3058: my $hashref = &tie_user_hash($udom, $uname, $namespace, 3059: &GDBM_WRCREAT(),"P",$what); 3060: if($hashref) { 3061: my @pairs=split(/\&/,$what); 3062: foreach my $pair (@pairs) { 3063: my ($key,$value)=split(/=/,$pair); 3064: $hashref->{$key}=$value; 3065: } 3066: if (&untie_user_hash($hashref)) { 3067: &Reply( $client, "ok\n", $userinput); 3068: } else { 3069: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ". 3070: "while attempting put\n", 3071: $userinput); 3072: } 3073: } else { 3074: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ". 3075: "while attempting put\n", $userinput); 3076: } 3077: } else { 3078: &Failure( $client, "refused\n", $userinput); 3079: } 3080: 3081: return 1; 3082: } 3083: &register_handler("put", \&put_user_profile_entry, 0, 1, 0); 3084: 3085: # Put a piece of new data in hash, returns error if entry already exists 3086: # Parameters: 3087: # $cmd - The command that got us here. 3088: # $tail - Tail of the command (remaining parameters). 3089: # $client - File descriptor connected to client. 3090: # Returns 3091: # 0 - Requested to exit, caller should shut down. 3092: # 1 - Continue processing. 3093: # 3094: sub newput_user_profile_entry { 3095: my ($cmd, $tail, $client) = @_; 3096: 3097: my $userinput = "$cmd:$tail"; 3098: 3099: my ($udom,$uname,$namespace,$what) =split(/:/,$tail,4); 3100: if ($namespace eq 'roles') { 3101: &Failure( $client, "refused\n", $userinput); 3102: return 1; 3103: } 3104: 3105: chomp($what); 3106: 3107: my $hashref = &tie_user_hash($udom, $uname, $namespace, 3108: &GDBM_WRCREAT(),"N",$what); 3109: if(!$hashref) { 3110: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ". 3111: "while attempting put\n", $userinput); 3112: return 1; 3113: } 3114: 3115: my @pairs=split(/\&/,$what); 3116: foreach my $pair (@pairs) { 3117: my ($key,$value)=split(/=/,$pair); 3118: if (exists($hashref->{$key})) { 3119: if (!&untie_user_hash($hashref)) { 3120: &logthis("error: ".($!+0)." untie (GDBM) failed ". 3121: "while attempting newput - early out as key exists"); 3122: } 3123: &Failure($client, "key_exists: ".$key."\n",$userinput); 3124: return 1; 3125: } 3126: } 3127: 3128: foreach my $pair (@pairs) { 3129: my ($key,$value)=split(/=/,$pair); 3130: $hashref->{$key}=$value; 3131: } 3132: 3133: if (&untie_user_hash($hashref)) { 3134: &Reply( $client, "ok\n", $userinput); 3135: } else { 3136: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ". 3137: "while attempting put\n", 3138: $userinput); 3139: } 3140: return 1; 3141: } 3142: &register_handler("newput", \&newput_user_profile_entry, 0, 1, 0); 3143: 3144: # 3145: # Increment a profile entry in the user history file. 3146: # The history contains keyword value pairs. In this case, 3147: # The value itself is a pair of numbers. The first, the current value 3148: # the second an increment that this function applies to the current 3149: # value. 3150: # 3151: # Parameters: 3152: # $cmd - The command that got us here. 3153: # $tail - Tail of the command (remaining parameters). 3154: # $client - File descriptor connected to client. 3155: # Returns 3156: # 0 - Requested to exit, caller should shut down. 3157: # 1 - Continue processing. 3158: # 3159: sub increment_user_value_handler { 3160: my ($cmd, $tail, $client) = @_; 3161: 3162: my $userinput = "$cmd:$tail"; 3163: 3164: my ($udom,$uname,$namespace,$what) =split(/:/,$tail); 3165: if ($namespace ne 'roles') { 3166: chomp($what); 3167: my $hashref = &tie_user_hash($udom, $uname, 3168: $namespace, &GDBM_WRCREAT(), 3169: "P",$what); 3170: if ($hashref) { 3171: my @pairs=split(/\&/,$what); 3172: foreach my $pair (@pairs) { 3173: my ($key,$value)=split(/=/,$pair); 3174: $value = &unescape($value); 3175: # We could check that we have a number... 3176: if (! defined($value) || $value eq '') { 3177: $value = 1; 3178: } 3179: $hashref->{$key}+=$value; 3180: if ($namespace eq 'nohist_resourcetracker') { 3181: if ($hashref->{$key} < 0) { 3182: $hashref->{$key} = 0; 3183: } 3184: } 3185: } 3186: if (&untie_user_hash($hashref)) { 3187: &Reply( $client, "ok\n", $userinput); 3188: } else { 3189: &Failure($client, "error: ".($!+0)." untie(GDBM) failed ". 3190: "while attempting inc\n", $userinput); 3191: } 3192: } else { 3193: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ". 3194: "while attempting inc\n", $userinput); 3195: } 3196: } else { 3197: &Failure($client, "refused\n", $userinput); 3198: } 3199: 3200: return 1; 3201: } 3202: &register_handler("inc", \&increment_user_value_handler, 0, 1, 0); 3203: 3204: # 3205: # Put a new role for a user. Roles are LonCAPA's packaging of permissions. 3206: # Each 'role' a user has implies a set of permissions. Adding a new role 3207: # for a person grants the permissions packaged with that role 3208: # to that user when the role is selected. 3209: # 3210: # Parameters: 3211: # $cmd - The command string (rolesput). 3212: # $tail - The remainder of the request line. For rolesput this 3213: # consists of a colon separated list that contains: 3214: # The domain and user that is granting the role (logged). 3215: # The domain and user that is getting the role. 3216: # The roles being granted as a set of & separated pairs. 3217: # each pair a key value pair. 3218: # $client - File descriptor connected to the client. 3219: # Returns: 3220: # 0 - If the daemon should exit 3221: # 1 - To continue processing. 3222: # 3223: # 3224: sub roles_put_handler { 3225: my ($cmd, $tail, $client) = @_; 3226: 3227: my $userinput = "$cmd:$tail"; 3228: 3229: my ( $exedom, $exeuser, $udom, $uname, $what) = split(/:/,$tail); 3230: 3231: 3232: my $namespace='roles'; 3233: chomp($what); 3234: my $hashref = &tie_user_hash($udom, $uname, $namespace, 3235: &GDBM_WRCREAT(), "P", 3236: "$exedom:$exeuser:$what"); 3237: # 3238: # Log the attempt to set a role. The {}'s here ensure that the file 3239: # handle is open for the minimal amount of time. Since the flush 3240: # is done on close this improves the chances the log will be an un- 3241: # corrupted ordered thing. 3242: if ($hashref) { 3243: my $pass_entry = &get_auth_type($udom, $uname); 3244: my ($auth_type,$pwd) = split(/:/, $pass_entry); 3245: $auth_type = $auth_type.":"; 3246: my @pairs=split(/\&/,$what); 3247: foreach my $pair (@pairs) { 3248: my ($key,$value)=split(/=/,$pair); 3249: &manage_permissions($key, $udom, $uname, 3250: $auth_type); 3251: $hashref->{$key}=$value; 3252: } 3253: if (&untie_user_hash($hashref)) { 3254: &Reply($client, "ok\n", $userinput); 3255: } else { 3256: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ". 3257: "while attempting rolesput\n", $userinput); 3258: } 3259: } else { 3260: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ". 3261: "while attempting rolesput\n", $userinput); 3262: } 3263: return 1; 3264: } 3265: &register_handler("rolesput", \&roles_put_handler, 1,1,0); # Encoded client only. 3266: 3267: # 3268: # Deletes (removes) a role for a user. This is equivalent to removing 3269: # a permissions package associated with the role from the user's profile. 3270: # 3271: # Parameters: 3272: # $cmd - The command (rolesdel) 3273: # $tail - The remainder of the request line. This consists 3274: # of: 3275: # The domain and user requesting the change (logged) 3276: # The domain and user being changed. 3277: # The roles being revoked. These are shipped to us 3278: # as a bunch of & separated role name keywords. 3279: # $client - The file handle open on the client. 3280: # Returns: 3281: # 1 - Continue processing 3282: # 0 - Exit. 3283: # 3284: sub roles_delete_handler { 3285: my ($cmd, $tail, $client) = @_; 3286: 3287: my $userinput = "$cmd:$tail"; 3288: 3289: my ($exedom,$exeuser,$udom,$uname,$what)=split(/:/,$tail); 3290: &Debug("cmd = ".$cmd." exedom= ".$exedom."user = ".$exeuser." udom=".$udom. 3291: "what = ".$what); 3292: my $namespace='roles'; 3293: chomp($what); 3294: my $hashref = &tie_user_hash($udom, $uname, $namespace, 3295: &GDBM_WRCREAT(), "D", 3296: "$exedom:$exeuser:$what"); 3297: 3298: if ($hashref) { 3299: my @rolekeys=split(/\&/,$what); 3300: 3301: foreach my $key (@rolekeys) { 3302: delete $hashref->{$key}; 3303: } 3304: if (&untie_user_hash($hashref)) { 3305: &Reply($client, "ok\n", $userinput); 3306: } else { 3307: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ". 3308: "while attempting rolesdel\n", $userinput); 3309: } 3310: } else { 3311: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ". 3312: "while attempting rolesdel\n", $userinput); 3313: } 3314: 3315: return 1; 3316: } 3317: &register_handler("rolesdel", \&roles_delete_handler, 1,1, 0); # Encoded client only 3318: 3319: # Unencrypted get from a user's profile database. See 3320: # GetProfileEntryEncrypted for a version that does end-to-end encryption. 3321: # This function retrieves a keyed item from a specific named database in the 3322: # user's directory. 3323: # 3324: # Parameters: 3325: # $cmd - Command request keyword (get). 3326: # $tail - Tail of the command. This is a colon separated list 3327: # consisting of the domain and username that uniquely 3328: # identifies the profile, 3329: # The 'namespace' which selects the gdbm file to 3330: # do the lookup in, 3331: # & separated list of keys to lookup. Note that 3332: # the values are returned as an & separated list too. 3333: # $client - File descriptor open on the client. 3334: # Returns: 3335: # 1 - Continue processing. 3336: # 0 - Exit. 3337: # 3338: sub get_profile_entry { 3339: my ($cmd, $tail, $client) = @_; 3340: 3341: my $userinput= "$cmd:$tail"; 3342: 3343: my ($udom,$uname,$namespace,$what) = split(/:/,$tail); 3344: chomp($what); 3345: 3346: 3347: my $replystring = read_profile($udom, $uname, $namespace, $what); 3348: my ($first) = split(/:/,$replystring); 3349: if($first ne "error") { 3350: &Reply($client, \$replystring, $userinput); 3351: } else { 3352: &Failure($client, $replystring." while attempting get\n", $userinput); 3353: } 3354: return 1; 3355: 3356: 3357: } 3358: &register_handler("get", \&get_profile_entry, 0,1,0); 3359: 3360: # 3361: # Process the encrypted get request. Note that the request is sent 3362: # in clear, but the reply is encrypted. This is a small covert channel: 3363: # information about the sensitive keys is given to the snooper. Just not 3364: # information about the values of the sensitive key. Hmm if I wanted to 3365: # know these I'd snoop for the egets. Get the profile item names from them 3366: # and then issue a get for them since there's no enforcement of the 3367: # requirement of an encrypted get for particular profile items. If I 3368: # were re-doing this, I'd force the request to be encrypted as well as the 3369: # reply. I'd also just enforce encrypted transactions for all gets since 3370: # that would prevent any covert channel snooping. 3371: # 3372: # Parameters: 3373: # $cmd - Command keyword of request (eget). 3374: # $tail - Tail of the command. See GetProfileEntry 3375: # for more information about this. 3376: # $client - File open on the client. 3377: # Returns: 3378: # 1 - Continue processing 3379: # 0 - server should exit. 3380: sub get_profile_entry_encrypted { 3381: my ($cmd, $tail, $client) = @_; 3382: 3383: my $userinput = "$cmd:$tail"; 3384: 3385: my ($udom,$uname,$namespace,$what) = split(/:/,$tail); 3386: chomp($what); 3387: my $qresult = read_profile($udom, $uname, $namespace, $what); 3388: my ($first) = split(/:/, $qresult); 3389: if($first ne "error") { 3390: 3391: if ($cipher) { 3392: my $cmdlength=length($qresult); 3393: $qresult.=" "; 3394: my $encqresult=''; 3395: for(my $encidx=0;$encidx<=$cmdlength;$encidx+=8) { 3396: $encqresult.= unpack("H16", 3397: $cipher->encrypt(substr($qresult, 3398: $encidx, 3399: 8))); 3400: } 3401: &Reply( $client, "enc:$cmdlength:$encqresult\n", $userinput); 3402: } else { 3403: &Failure( $client, "error:no_key\n", $userinput); 3404: } 3405: } else { 3406: &Failure($client, "$qresult while attempting eget\n", $userinput); 3407: 3408: } 3409: 3410: return 1; 3411: } 3412: &register_handler("eget", \&get_profile_entry_encrypted, 0, 1, 0); 3413: 3414: # 3415: # Deletes a key in a user profile database. 3416: # 3417: # Parameters: 3418: # $cmd - Command keyword (del). 3419: # $tail - Command tail. IN this case a colon 3420: # separated list containing: 3421: # The domain and user that identifies uniquely 3422: # the identity of the user. 3423: # The profile namespace (name of the profile 3424: # database file). 3425: # & separated list of keywords to delete. 3426: # $client - File open on client socket. 3427: # Returns: 3428: # 1 - Continue processing 3429: # 0 - Exit server. 3430: # 3431: # 3432: sub delete_profile_entry { 3433: my ($cmd, $tail, $client) = @_; 3434: 3435: my $userinput = "cmd:$tail"; 3436: 3437: my ($udom,$uname,$namespace,$what) = split(/:/,$tail); 3438: chomp($what); 3439: my $hashref = &tie_user_hash($udom, $uname, $namespace, 3440: &GDBM_WRCREAT(), 3441: "D",$what); 3442: if ($hashref) { 3443: my @keys=split(/\&/,$what); 3444: foreach my $key (@keys) { 3445: delete($hashref->{$key}); 3446: } 3447: if (&untie_user_hash($hashref)) { 3448: &Reply($client, "ok\n", $userinput); 3449: } else { 3450: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ". 3451: "while attempting del\n", $userinput); 3452: } 3453: } else { 3454: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ". 3455: "while attempting del\n", $userinput); 3456: } 3457: return 1; 3458: } 3459: &register_handler("del", \&delete_profile_entry, 0, 1, 0); 3460: 3461: # 3462: # List the set of keys that are defined in a profile database file. 3463: # A successful reply from this will contain an & separated list of 3464: # the keys. 3465: # Parameters: 3466: # $cmd - Command request (keys). 3467: # $tail - Remainder of the request, a colon separated 3468: # list containing domain/user that identifies the 3469: # user being queried, and the database namespace 3470: # (database filename essentially). 3471: # $client - File open on the client. 3472: # Returns: 3473: # 1 - Continue processing. 3474: # 0 - Exit the server. 3475: # 3476: sub get_profile_keys { 3477: my ($cmd, $tail, $client) = @_; 3478: 3479: my $userinput = "$cmd:$tail"; 3480: 3481: my ($udom,$uname,$namespace)=split(/:/,$tail); 3482: my $qresult=''; 3483: my $hashref = &tie_user_hash($udom, $uname, $namespace, 3484: &GDBM_READER()); 3485: if ($hashref) { 3486: foreach my $key (keys %$hashref) { 3487: $qresult.="$key&"; 3488: } 3489: if (&untie_user_hash($hashref)) { 3490: $qresult=~s/\&$//; 3491: &Reply($client, \$qresult, $userinput); 3492: } else { 3493: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ". 3494: "while attempting keys\n", $userinput); 3495: } 3496: } else { 3497: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ". 3498: "while attempting keys\n", $userinput); 3499: } 3500: 3501: return 1; 3502: } 3503: &register_handler("keys", \&get_profile_keys, 0, 1, 0); 3504: 3505: # 3506: # Dump the contents of a user profile database. 3507: # Note that this constitutes a very large covert channel too since 3508: # the dump will return sensitive information that is not encrypted. 3509: # The naive security assumption is that the session negotiation ensures 3510: # our client is trusted and I don't believe that's assured at present. 3511: # Sure want badly to go to ssl or tls. Of course if my peer isn't really 3512: # a LonCAPA node they could have negotiated an encryption key too so >sigh<. 3513: # 3514: # Parameters: 3515: # $cmd - The command request keyword (currentdump). 3516: # $tail - Remainder of the request, consisting of a colon 3517: # separated list that has the domain/username and 3518: # the namespace to dump (database file). 3519: # $client - file open on the remote client. 3520: # Returns: 3521: # 1 - Continue processing. 3522: # 0 - Exit the server. 3523: # 3524: sub dump_profile_database { 3525: my ($cmd, $tail, $client) = @_; 3526: 3527: my $userinput = "$cmd:$tail"; 3528: 3529: my ($udom,$uname,$namespace) = split(/:/,$tail); 3530: my $hashref = &tie_user_hash($udom, $uname, $namespace, 3531: &GDBM_READER()); 3532: if ($hashref) { 3533: # Structure of %data: 3534: # $data{$symb}->{$parameter}=$value; 3535: # $data{$symb}->{'v.'.$parameter}=$version; 3536: # since $parameter will be unescaped, we do not 3537: # have to worry about silly parameter names... 3538: 3539: my $qresult=''; 3540: my %data = (); # A hash of anonymous hashes.. 3541: while (my ($key,$value) = each(%$hashref)) { 3542: my ($v,$symb,$param) = split(/:/,$key); 3543: next if ($v eq 'version' || $symb eq 'keys'); 3544: next if (exists($data{$symb}) && 3545: exists($data{$symb}->{$param}) && 3546: $data{$symb}->{'v.'.$param} > $v); 3547: $data{$symb}->{$param}=$value; 3548: $data{$symb}->{'v.'.$param}=$v; 3549: } 3550: if (&untie_user_hash($hashref)) { 3551: while (my ($symb,$param_hash) = each(%data)) { 3552: while(my ($param,$value) = each (%$param_hash)){ 3553: next if ($param =~ /^v\./); # Ignore versions... 3554: # 3555: # Just dump the symb=value pairs separated by & 3556: # 3557: $qresult.=$symb.':'.$param.'='.$value.'&'; 3558: } 3559: } 3560: chop($qresult); 3561: &Reply($client , \$qresult, $userinput); 3562: } else { 3563: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ". 3564: "while attempting currentdump\n", $userinput); 3565: } 3566: } else { 3567: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ". 3568: "while attempting currentdump\n", $userinput); 3569: } 3570: 3571: return 1; 3572: } 3573: &register_handler("currentdump", \&dump_profile_database, 0, 1, 0); 3574: 3575: # 3576: # Dump a profile database with an optional regular expression 3577: # to match against the keys. In this dump, no effort is made 3578: # to separate symb from version information. Presumably the 3579: # databases that are dumped by this command are of a different 3580: # structure. Need to look at this and improve the documentation of 3581: # both this and the currentdump handler. 3582: # Parameters: 3583: # $cmd - The command keyword. 3584: # $tail - All of the characters after the $cmd: 3585: # These are expected to be a colon 3586: # separated list containing: 3587: # domain/user - identifying the user. 3588: # namespace - identifying the database. 3589: # regexp - optional regular expression 3590: # that is matched against 3591: # database keywords to do 3592: # selective dumps. 3593: # range - optional range of entries 3594: # e.g., 10-20 would return the 3595: # 10th to 19th items, etc. 3596: # $client - Channel open on the client. 3597: # Returns: 3598: # 1 - Continue processing. 3599: # Side effects: 3600: # response is written to $client. 3601: # 3602: sub dump_with_regexp { 3603: my ($cmd, $tail, $client) = @_; 3604: 3605: my $res = LONCAPA::Lond::dump_with_regexp($tail, $clientversion); 3606: 3607: if ($res =~ /^error:/) { 3608: &Failure($client, \$res, "$cmd:$tail"); 3609: } else { 3610: &Reply($client, \$res, "$cmd:$tail"); 3611: } 3612: 3613: return 1; 3614: } 3615: &register_handler("dump", \&dump_with_regexp, 0, 1, 0); 3616: 3617: # 3618: # Process the encrypted dump request. Original call should 3619: # be from lonnet::dump() with seventh arg ($encrypt) set to 3620: # 1, to ensure that both request and response are encrypted. 3621: # 3622: # Parameters: 3623: # $cmd - Command keyword of request (edump). 3624: # $tail - Tail of the command. 3625: # See &dump_with_regexp for more 3626: # information about this. 3627: # $client - File open on the client. 3628: # Returns: 3629: # 1 - Continue processing 3630: # 0 - server should exit. 3631: # 3632: 3633: sub encrypted_dump_with_regexp { 3634: my ($cmd, $tail, $client) = @_; 3635: my $res = LONCAPA::Lond::dump_with_regexp($tail, $clientversion); 3636: 3637: if ($res =~ /^error:/) { 3638: Failure($client, \$res, "$cmd:$tail"); 3639: } else { 3640: if ($cipher) { 3641: my $cmdlength=length($res); 3642: $res.=" "; 3643: my $encres=''; 3644: for (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) { 3645: $encres.= unpack("H16", 3646: $cipher->encrypt(substr($res, 3647: $encidx, 3648: 8))); 3649: } 3650: &Reply( $client,"enc:$cmdlength:$encres\n","$cmd:$tail"); 3651: } else { 3652: &Failure( $client, "error:no_key\n","$cmd:$tail"); 3653: } 3654: } 3655: } 3656: &register_handler("edump", \&encrypted_dump_with_regexp, 0, 1, 0); 3657: 3658: # Store a set of key=value pairs associated with a versioned name. 3659: # 3660: # Parameters: 3661: # $cmd - Request command keyword. 3662: # $tail - Tail of the request. This is a colon 3663: # separated list containing: 3664: # domain/user - User and authentication domain. 3665: # namespace - Name of the database being modified 3666: # rid - Resource keyword to modify. 3667: # what - new value associated with rid. 3668: # laststore - (optional) version=timestamp 3669: # for most recent transaction for rid 3670: # in namespace, when cstore was called 3671: # 3672: # $client - Socket open on the client. 3673: # 3674: # 3675: # Returns: 3676: # 1 (keep on processing). 3677: # Side-Effects: 3678: # Writes to the client 3679: # Successful storage will cause either 'ok', or, if $laststore was included 3680: # in the tail of the request, and the version number for the last transaction 3681: # is larger than the version in $laststore, delay:$numtrans , where $numtrans 3682: # is the number of store evevnts recorded for rid in namespace since 3683: # lonnet::store() was called by the client. 3684: # 3685: sub store_handler { 3686: my ($cmd, $tail, $client) = @_; 3687: 3688: my $userinput = "$cmd:$tail"; 3689: 3690: chomp($tail); 3691: my ($udom,$uname,$namespace,$rid,$what,$laststore) =split(/:/,$tail); 3692: if ($namespace ne 'roles') { 3693: 3694: my @pairs=split(/\&/,$what); 3695: my $hashref = &tie_user_hash($udom, $uname, $namespace, 3696: &GDBM_WRCREAT(), "S", 3697: "$rid:$what"); 3698: if ($hashref) { 3699: my $now = time; 3700: my $numtrans; 3701: if ($laststore) { 3702: my ($previousversion,$previoustime) = split(/\=/,$laststore); 3703: my ($lastversion,$lasttime) = (0,0); 3704: $lastversion = $hashref->{"version:$rid"}; 3705: if ($lastversion) { 3706: $lasttime = $hashref->{"$lastversion:$rid:timestamp"}; 3707: } 3708: if (($previousversion) && ($previousversion !~ /\D/)) { 3709: if (($lastversion > $previousversion) && ($lasttime >= $previoustime)) { 3710: $numtrans = $lastversion - $previousversion; 3711: } 3712: } elsif ($lastversion) { 3713: $numtrans = $lastversion; 3714: } 3715: if ($numtrans) { 3716: $numtrans =~ s/D//g; 3717: } 3718: } 3719: 3720: $hashref->{"version:$rid"}++; 3721: my $version=$hashref->{"version:$rid"}; 3722: my $allkeys=''; 3723: foreach my $pair (@pairs) { 3724: my ($key,$value)=split(/=/,$pair); 3725: $allkeys.=$key.':'; 3726: $hashref->{"$version:$rid:$key"}=$value; 3727: } 3728: $hashref->{"$version:$rid:timestamp"}=$now; 3729: $allkeys.='timestamp'; 3730: $hashref->{"$version:keys:$rid"}=$allkeys; 3731: if (&untie_user_hash($hashref)) { 3732: my $msg = 'ok'; 3733: if ($numtrans) { 3734: $msg = 'delay:'.$numtrans; 3735: } 3736: &Reply($client, "$msg\n", $userinput); 3737: } else { 3738: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ". 3739: "while attempting store\n", $userinput); 3740: } 3741: } else { 3742: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ". 3743: "while attempting store\n", $userinput); 3744: } 3745: } else { 3746: &Failure($client, "refused\n", $userinput); 3747: } 3748: 3749: return 1; 3750: } 3751: &register_handler("store", \&store_handler, 0, 1, 0); 3752: 3753: # Modify a set of key=value pairs associated with a versioned name. 3754: # 3755: # Parameters: 3756: # $cmd - Request command keyword. 3757: # $tail - Tail of the request. This is a colon 3758: # separated list containing: 3759: # domain/user - User and authentication domain. 3760: # namespace - Name of the database being modified 3761: # rid - Resource keyword to modify. 3762: # v - Version item to modify 3763: # what - new value associated with rid. 3764: # 3765: # $client - Socket open on the client. 3766: # 3767: # 3768: # Returns: 3769: # 1 (keep on processing). 3770: # Side-Effects: 3771: # Writes to the client 3772: sub putstore_handler { 3773: my ($cmd, $tail, $client) = @_; 3774: 3775: my $userinput = "$cmd:$tail"; 3776: 3777: my ($udom,$uname,$namespace,$rid,$v,$what) =split(/:/,$tail); 3778: if ($namespace ne 'roles') { 3779: 3780: chomp($what); 3781: my $hashref = &tie_user_hash($udom, $uname, $namespace, 3782: &GDBM_WRCREAT(), "M", 3783: "$rid:$v:$what"); 3784: if ($hashref) { 3785: my $now = time; 3786: my %data = &hash_extract($what); 3787: my @allkeys; 3788: while (my($key,$value) = each(%data)) { 3789: push(@allkeys,$key); 3790: $hashref->{"$v:$rid:$key"} = $value; 3791: } 3792: my $allkeys = join(':',@allkeys); 3793: $hashref->{"$v:keys:$rid"}=$allkeys; 3794: 3795: if (&untie_user_hash($hashref)) { 3796: &Reply($client, "ok\n", $userinput); 3797: } else { 3798: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ". 3799: "while attempting store\n", $userinput); 3800: } 3801: } else { 3802: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ". 3803: "while attempting store\n", $userinput); 3804: } 3805: } else { 3806: &Failure($client, "refused\n", $userinput); 3807: } 3808: 3809: return 1; 3810: } 3811: &register_handler("putstore", \&putstore_handler, 0, 1, 0); 3812: 3813: sub hash_extract { 3814: my ($str)=@_; 3815: my %hash; 3816: foreach my $pair (split(/\&/,$str)) { 3817: my ($key,$value)=split(/=/,$pair); 3818: $hash{$key}=$value; 3819: } 3820: return (%hash); 3821: } 3822: sub hash_to_str { 3823: my ($hash_ref)=@_; 3824: my $str; 3825: foreach my $key (keys(%$hash_ref)) { 3826: $str.=$key.'='.$hash_ref->{$key}.'&'; 3827: } 3828: $str=~s/\&$//; 3829: return $str; 3830: } 3831: 3832: # 3833: # Dump out all versions of a resource that has key=value pairs associated 3834: # with it for each version. These resources are built up via the store 3835: # command. 3836: # 3837: # Parameters: 3838: # $cmd - Command keyword. 3839: # $tail - Remainder of the request which consists of: 3840: # domain/user - User and auth. domain. 3841: # namespace - name of resource database. 3842: # rid - Resource id. 3843: # $client - socket open on the client. 3844: # 3845: # Returns: 3846: # 1 indicating the caller should not yet exit. 3847: # Side-effects: 3848: # Writes a reply to the client. 3849: # The reply is a string of the following shape: 3850: # version=current&version:keys=k1:k2...&1:k1=v1&1:k2=v2... 3851: # Where the 1 above represents version 1. 3852: # this continues for all pairs of keys in all versions. 3853: # 3854: # 3855: # 3856: # 3857: sub restore_handler { 3858: my ($cmd, $tail, $client) = @_; 3859: 3860: my $userinput = "$cmd:$tail"; # Only used for logging purposes. 3861: my ($udom,$uname,$namespace,$rid) = split(/:/,$tail); 3862: $namespace=~s/\//\_/g; 3863: $namespace = &LONCAPA::clean_username($namespace); 3864: 3865: chomp($rid); 3866: my $qresult=''; 3867: my $hashref = &tie_user_hash($udom, $uname, $namespace, &GDBM_READER()); 3868: if ($hashref) { 3869: my $version=$hashref->{"version:$rid"}; 3870: $qresult.="version=$version&"; 3871: my $scope; 3872: for ($scope=1;$scope<=$version;$scope++) { 3873: my $vkeys=$hashref->{"$scope:keys:$rid"}; 3874: my @keys=split(/:/,$vkeys); 3875: my $key; 3876: $qresult.="$scope:keys=$vkeys&"; 3877: foreach $key (@keys) { 3878: $qresult.="$scope:$key=".$hashref->{"$scope:$rid:$key"}."&"; 3879: } 3880: } 3881: if (&untie_user_hash($hashref)) { 3882: $qresult=~s/\&$//; 3883: &Reply( $client, \$qresult, $userinput); 3884: } else { 3885: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ". 3886: "while attempting restore\n", $userinput); 3887: } 3888: } else { 3889: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ". 3890: "while attempting restore\n", $userinput); 3891: } 3892: 3893: return 1; 3894: 3895: 3896: } 3897: &register_handler("restore", \&restore_handler, 0,1,0); 3898: 3899: # 3900: # Add a chat message to a synchronous discussion board. 3901: # 3902: # Parameters: 3903: # $cmd - Request keyword. 3904: # $tail - Tail of the command. A colon separated list 3905: # containing: 3906: # cdom - Domain on which the chat board lives 3907: # cnum - Course containing the chat board. 3908: # newpost - Body of the posting. 3909: # group - Optional group, if chat board is only 3910: # accessible in a group within the course 3911: # $client - Socket open on the client. 3912: # Returns: 3913: # 1 - Indicating caller should keep on processing. 3914: # 3915: # Side-effects: 3916: # writes a reply to the client. 3917: # 3918: # 3919: sub send_chat_handler { 3920: my ($cmd, $tail, $client) = @_; 3921: 3922: 3923: my $userinput = "$cmd:$tail"; 3924: 3925: my ($cdom,$cnum,$newpost,$group)=split(/\:/,$tail); 3926: &chat_add($cdom,$cnum,$newpost,$group); 3927: &Reply($client, "ok\n", $userinput); 3928: 3929: return 1; 3930: } 3931: &register_handler("chatsend", \&send_chat_handler, 0, 1, 0); 3932: 3933: # 3934: # Retrieve the set of chat messages from a discussion board. 3935: # 3936: # Parameters: 3937: # $cmd - Command keyword that initiated the request. 3938: # $tail - Remainder of the request after the command 3939: # keyword. In this case a colon separated list of 3940: # chat domain - Which discussion board. 3941: # chat id - Discussion thread(?) 3942: # domain/user - Authentication domain and username 3943: # of the requesting person. 3944: # group - Optional course group containing 3945: # the board. 3946: # $client - Socket open on the client program. 3947: # Returns: 3948: # 1 - continue processing 3949: # Side effects: 3950: # Response is written to the client. 3951: # 3952: sub retrieve_chat_handler { 3953: my ($cmd, $tail, $client) = @_; 3954: 3955: 3956: my $userinput = "$cmd:$tail"; 3957: 3958: my ($cdom,$cnum,$udom,$uname,$group)=split(/\:/,$tail); 3959: my $reply=''; 3960: foreach (&get_chat($cdom,$cnum,$udom,$uname,$group)) { 3961: $reply.=&escape($_).':'; 3962: } 3963: $reply=~s/\:$//; 3964: &Reply($client, \$reply, $userinput); 3965: 3966: 3967: return 1; 3968: } 3969: &register_handler("chatretr", \&retrieve_chat_handler, 0, 1, 0); 3970: 3971: # 3972: # Initiate a query of an sql database. SQL query repsonses get put in 3973: # a file for later retrieval. This prevents sql query results from 3974: # bottlenecking the system. Note that with loncnew, perhaps this is 3975: # less of an issue since multiple outstanding requests can be concurrently 3976: # serviced. 3977: # 3978: # Parameters: 3979: # $cmd - COmmand keyword that initiated the request. 3980: # $tail - Remainder of the command after the keyword. 3981: # For this function, this consists of a query and 3982: # 3 arguments that are self-documentingly labelled 3983: # in the original arg1, arg2, arg3. 3984: # $client - Socket open on the client. 3985: # Return: 3986: # 1 - Indicating processing should continue. 3987: # Side-effects: 3988: # a reply is written to $client. 3989: # 3990: sub send_query_handler { 3991: my ($cmd, $tail, $client) = @_; 3992: 3993: 3994: my $userinput = "$cmd:$tail"; 3995: 3996: my ($query,$arg1,$arg2,$arg3)=split(/\:/,$tail); 3997: $query=~s/\n*$//g; 3998: if (($query eq 'usersearch') || ($query eq 'instdirsearch')) { 3999: my $usersearchconf = &get_usersearch_config($currentdomainid,'directorysrch'); 4000: my $earlyout; 4001: if (ref($usersearchconf) eq 'HASH') { 4002: if ($currentdomainid eq $clienthomedom) { 4003: if ($query eq 'usersearch') { 4004: if ($usersearchconf->{'lcavailable'} eq '0') { 4005: $earlyout = 1; 4006: } 4007: } else { 4008: if ($usersearchconf->{'available'} eq '0') { 4009: $earlyout = 1; 4010: } 4011: } 4012: } else { 4013: if ($query eq 'usersearch') { 4014: if ($usersearchconf->{'lclocalonly'}) { 4015: $earlyout = 1; 4016: } 4017: } else { 4018: if ($usersearchconf->{'localonly'}) { 4019: $earlyout = 1; 4020: } 4021: } 4022: } 4023: } 4024: if ($earlyout) { 4025: &Reply($client, "query_not_authorized\n"); 4026: return 1; 4027: } 4028: } 4029: &Reply($client, "". &sql_reply("$clientname\&$query". 4030: "\&$arg1"."\&$arg2"."\&$arg3")."\n", 4031: $userinput); 4032: 4033: return 1; 4034: } 4035: &register_handler("querysend", \&send_query_handler, 0, 1, 0); 4036: 4037: # 4038: # Add a reply to an sql query. SQL queries are done asyncrhonously. 4039: # The query is submitted via a "querysend" transaction. 4040: # There it is passed on to the lonsql daemon, queued and issued to 4041: # mysql. 4042: # This transaction is invoked when the sql transaction is complete 4043: # it stores the query results in flie and indicates query completion. 4044: # presumably local software then fetches this response... I'm guessing 4045: # the sequence is: lonc does a querysend, we ask lonsql to do it. 4046: # lonsql on completion of the query interacts with the lond of our 4047: # client to do a query reply storing two files: 4048: # - id - The results of the query. 4049: # - id.end - Indicating the transaction completed. 4050: # NOTE: id is a unique id assigned to the query and querysend time. 4051: # Parameters: 4052: # $cmd - Command keyword that initiated this request. 4053: # $tail - Remainder of the tail. In this case that's a colon 4054: # separated list containing the query Id and the 4055: # results of the query. 4056: # $client - Socket open on the client. 4057: # Return: 4058: # 1 - Indicating that we should continue processing. 4059: # Side effects: 4060: # ok written to the client. 4061: # 4062: sub reply_query_handler { 4063: my ($cmd, $tail, $client) = @_; 4064: 4065: 4066: my $userinput = "$cmd:$tail"; 4067: 4068: my ($id,$reply)=split(/:/,$tail); 4069: my $store; 4070: my $execdir=$perlvar{'lonDaemons'}; 4071: if ($store=IO::File->new(">$execdir/tmp/$id")) { 4072: $reply=~s/\&/\n/g; 4073: print $store $reply; 4074: close $store; 4075: my $store2=IO::File->new(">$execdir/tmp/$id.end"); 4076: print $store2 "done\n"; 4077: close $store2; 4078: &Reply($client, "ok\n", $userinput); 4079: } else { 4080: &Failure($client, "error: ".($!+0) 4081: ." IO::File->new Failed ". 4082: "while attempting queryreply\n", $userinput); 4083: } 4084: 4085: 4086: return 1; 4087: } 4088: &register_handler("queryreply", \&reply_query_handler, 0, 1, 0); 4089: 4090: # 4091: # Process the courseidput request. Not quite sure what this means 4092: # at the system level sense. It appears a gdbm file in the 4093: # /home/httpd/lonUsers/$domain/nohist_courseids is tied and 4094: # a set of entries made in that database. 4095: # 4096: # Parameters: 4097: # $cmd - The command keyword that initiated this request. 4098: # $tail - Tail of the command. In this case consists of a colon 4099: # separated list contaning the domain to apply this to and 4100: # an ampersand separated list of keyword=value pairs. 4101: # Each value is a colon separated list that includes: 4102: # description, institutional code and course owner. 4103: # For backward compatibility with versions included 4104: # in LON-CAPA 1.1.X (and earlier) and 1.2.X, institutional 4105: # code and/or course owner are preserved from the existing 4106: # record when writing a new record in response to 1.1 or 4107: # 1.2 implementations of lonnet::flushcourselogs(). 4108: # 4109: # $client - Socket open on the client. 4110: # Returns: 4111: # 1 - indicating that processing should continue 4112: # 4113: # Side effects: 4114: # reply is written to the client. 4115: # 4116: sub put_course_id_handler { 4117: my ($cmd, $tail, $client) = @_; 4118: 4119: 4120: my $userinput = "$cmd:$tail"; 4121: 4122: my ($udom, $what) = split(/:/, $tail,2); 4123: chomp($what); 4124: my $now=time; 4125: my @pairs=split(/\&/,$what); 4126: 4127: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT()); 4128: if ($hashref) { 4129: foreach my $pair (@pairs) { 4130: my ($key,$courseinfo) = split(/=/,$pair,2); 4131: $courseinfo =~ s/=/:/g; 4132: if (defined($hashref->{$key})) { 4133: my $value = &Apache::lonnet::thaw_unescape($hashref->{$key}); 4134: if (ref($value) eq 'HASH') { 4135: my @items = ('description','inst_code','owner','type'); 4136: my @new_items = split(/:/,$courseinfo,-1); 4137: my %storehash; 4138: for (my $i=0; $i<@new_items; $i++) { 4139: $storehash{$items[$i]} = &unescape($new_items[$i]); 4140: } 4141: $hashref->{$key} = 4142: &Apache::lonnet::freeze_escape(\%storehash); 4143: my $unesc_key = &unescape($key); 4144: $hashref->{&escape('lasttime:'.$unesc_key)} = $now; 4145: next; 4146: } 4147: } 4148: my @current_items = split(/:/,$hashref->{$key},-1); 4149: shift(@current_items); # remove description 4150: pop(@current_items); # remove last access 4151: my $numcurrent = scalar(@current_items); 4152: if ($numcurrent > 3) { 4153: $numcurrent = 3; 4154: } 4155: my @new_items = split(/:/,$courseinfo,-1); 4156: my $numnew = scalar(@new_items); 4157: if ($numcurrent > 0) { 4158: if ($numnew <= $numcurrent) { # flushcourselogs() from pre 2.2 4159: for (my $j=$numcurrent-$numnew; $j>=0; $j--) { 4160: $courseinfo .= ':'.$current_items[$numcurrent-$j-1]; 4161: } 4162: } 4163: } 4164: $hashref->{$key}=$courseinfo.':'.$now; 4165: } 4166: if (&untie_domain_hash($hashref)) { 4167: &Reply( $client, "ok\n", $userinput); 4168: } else { 4169: &Failure($client, "error: ".($!+0) 4170: ." untie(GDBM) Failed ". 4171: "while attempting courseidput\n", $userinput); 4172: } 4173: } else { 4174: &Failure($client, "error: ".($!+0) 4175: ." tie(GDBM) Failed ". 4176: "while attempting courseidput\n", $userinput); 4177: } 4178: 4179: return 1; 4180: } 4181: &register_handler("courseidput", \&put_course_id_handler, 0, 1, 0); 4182: 4183: sub put_course_id_hash_handler { 4184: my ($cmd, $tail, $client) = @_; 4185: my $userinput = "$cmd:$tail"; 4186: my ($udom,$mode,$what) = split(/:/, $tail,3); 4187: chomp($what); 4188: my $now=time; 4189: my @pairs=split(/\&/,$what); 4190: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT()); 4191: if ($hashref) { 4192: foreach my $pair (@pairs) { 4193: my ($key,$value)=split(/=/,$pair); 4194: my $unesc_key = &unescape($key); 4195: if ($mode ne 'timeonly') { 4196: if (!defined($hashref->{&escape('lasttime:'.$unesc_key)})) { 4197: my $curritems = &Apache::lonnet::thaw_unescape($key); 4198: if (ref($curritems) ne 'HASH') { 4199: my @current_items = split(/:/,$hashref->{$key},-1); 4200: my $lasttime = pop(@current_items); 4201: $hashref->{&escape('lasttime:'.$unesc_key)} = $lasttime; 4202: } else { 4203: $hashref->{&escape('lasttime:'.$unesc_key)} = ''; 4204: } 4205: } 4206: $hashref->{$key} = $value; 4207: } 4208: if ($mode ne 'notime') { 4209: $hashref->{&escape('lasttime:'.$unesc_key)} = $now; 4210: } 4211: } 4212: if (&untie_domain_hash($hashref)) { 4213: &Reply($client, "ok\n", $userinput); 4214: } else { 4215: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ". 4216: "while attempting courseidputhash\n", $userinput); 4217: } 4218: } else { 4219: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ". 4220: "while attempting courseidputhash\n", $userinput); 4221: } 4222: return 1; 4223: } 4224: &register_handler("courseidputhash", \&put_course_id_hash_handler, 0, 1, 0); 4225: 4226: # Retrieves the value of a course id resource keyword pattern 4227: # defined since a starting date. Both the starting date and the 4228: # keyword pattern are optional. If the starting date is not supplied it 4229: # is treated as the beginning of time. If the pattern is not found, 4230: # it is treatred as "." matching everything. 4231: # 4232: # Parameters: 4233: # $cmd - Command keyword that resulted in us being dispatched. 4234: # $tail - The remainder of the command that, in this case, consists 4235: # of a colon separated list of: 4236: # domain - The domain in which the course database is 4237: # defined. 4238: # since - Optional parameter describing the minimum 4239: # time of definition(?) of the resources that 4240: # will match the dump. 4241: # description - regular expression that is used to filter 4242: # the dump. Only keywords matching this regexp 4243: # will be used. 4244: # institutional code - optional supplied code to filter 4245: # the dump. Only courses with an institutional code 4246: # that match the supplied code will be returned. 4247: # owner - optional supplied username and domain of owner to 4248: # filter the dump. Only courses for which the course 4249: # owner matches the supplied username and/or domain 4250: # will be returned. Pre-2.2.0 legacy entries from 4251: # nohist_courseiddump will only contain usernames. 4252: # type - optional parameter for selection 4253: # regexp_ok - if 1 or -1 allow the supplied institutional code 4254: # filter to behave as a regular expression: 4255: # 1 will not exclude the course if the instcode matches the RE 4256: # -1 will exclude the course if the instcode matches the RE 4257: # rtn_as_hash - whether to return the information available for 4258: # each matched item as a frozen hash of all 4259: # key, value pairs in the item's hash, or as a 4260: # colon-separated list of (in order) description, 4261: # institutional code, and course owner. 4262: # selfenrollonly - filter by courses allowing self-enrollment 4263: # now or in the future (selfenrollonly = 1). 4264: # catfilter - filter by course category, assigned to a course 4265: # using manually defined categories (i.e., not 4266: # self-cataloging based on on institutional code). 4267: # showhidden - include course in results even if course 4268: # was set to be excluded from course catalog (DC only). 4269: # caller - if set to 'coursecatalog', courses set to be hidden 4270: # from course catalog will be excluded from results (unless 4271: # overridden by "showhidden". 4272: # cloner - escaped username:domain of course cloner (if picking course to 4273: # clone). 4274: # cc_clone_list - escaped comma separated list of courses for which 4275: # course cloner has active CC role (and so can clone 4276: # automatically). 4277: # cloneonly - filter by courses for which cloner has rights to clone. 4278: # createdbefore - include courses for which creation date preceeded this date. 4279: # createdafter - include courses for which creation date followed this date. 4280: # creationcontext - include courses created in specified context 4281: # 4282: # domcloner - flag to indicate if user can create CCs in course's domain. 4283: # If so, ability to clone course is automatic. 4284: # hasuniquecode - filter by courses for which a six character unique code has 4285: # been set. 4286: # 4287: # $client - The socket open on the client. 4288: # Returns: 4289: # 1 - Continue processing. 4290: # Side Effects: 4291: # a reply is written to $client. 4292: sub dump_course_id_handler { 4293: my ($cmd, $tail, $client) = @_; 4294: my $userinput = "$cmd:$tail"; 4295: 4296: my ($udom,$since,$description,$instcodefilter,$ownerfilter,$coursefilter, 4297: $typefilter,$regexp_ok,$rtn_as_hash,$selfenrollonly,$catfilter,$showhidden, 4298: $caller,$cloner,$cc_clone_list,$cloneonly,$createdbefore,$createdafter, 4299: $creationcontext,$domcloner,$hasuniquecode) =split(/:/,$tail); 4300: my $now = time; 4301: my ($cloneruname,$clonerudom,%cc_clone); 4302: if (defined($description)) { 4303: $description=&unescape($description); 4304: } else { 4305: $description='.'; 4306: } 4307: if (defined($instcodefilter)) { 4308: $instcodefilter=&unescape($instcodefilter); 4309: } else { 4310: $instcodefilter='.'; 4311: } 4312: my ($ownerunamefilter,$ownerdomfilter); 4313: if (defined($ownerfilter)) { 4314: $ownerfilter=&unescape($ownerfilter); 4315: if ($ownerfilter ne '.' && defined($ownerfilter)) { 4316: if ($ownerfilter =~ /^([^:]*):([^:]*)$/) { 4317: $ownerunamefilter = $1; 4318: $ownerdomfilter = $2; 4319: } else { 4320: $ownerunamefilter = $ownerfilter; 4321: $ownerdomfilter = ''; 4322: } 4323: } 4324: } else { 4325: $ownerfilter='.'; 4326: } 4327: 4328: if (defined($coursefilter)) { 4329: $coursefilter=&unescape($coursefilter); 4330: } else { 4331: $coursefilter='.'; 4332: } 4333: if (defined($typefilter)) { 4334: $typefilter=&unescape($typefilter); 4335: } else { 4336: $typefilter='.'; 4337: } 4338: if (defined($regexp_ok)) { 4339: $regexp_ok=&unescape($regexp_ok); 4340: } 4341: if (defined($catfilter)) { 4342: $catfilter=&unescape($catfilter); 4343: } 4344: if (defined($cloner)) { 4345: $cloner = &unescape($cloner); 4346: ($cloneruname,$clonerudom) = ($cloner =~ /^($LONCAPA::match_username):($LONCAPA::match_domain)$/); 4347: } 4348: if (defined($cc_clone_list)) { 4349: $cc_clone_list = &unescape($cc_clone_list); 4350: my @cc_cloners = split('&',$cc_clone_list); 4351: foreach my $cid (@cc_cloners) { 4352: my ($clonedom,$clonenum) = split(':',$cid); 4353: next if ($clonedom ne $udom); 4354: $cc_clone{$clonedom.'_'.$clonenum} = 1; 4355: } 4356: } 4357: if ($createdbefore ne '') { 4358: $createdbefore = &unescape($createdbefore); 4359: } else { 4360: $createdbefore = 0; 4361: } 4362: if ($createdafter ne '') { 4363: $createdafter = &unescape($createdafter); 4364: } else { 4365: $createdafter = 0; 4366: } 4367: if ($creationcontext ne '') { 4368: $creationcontext = &unescape($creationcontext); 4369: } else { 4370: $creationcontext = '.'; 4371: } 4372: unless ($hasuniquecode) { 4373: $hasuniquecode = '.'; 4374: } 4375: my $unpack = 1; 4376: if ($description eq '.' && $instcodefilter eq '.' && $ownerfilter eq '.' && 4377: $typefilter eq '.') { 4378: $unpack = 0; 4379: } 4380: if (!defined($since)) { $since=0; } 4381: my $qresult=''; 4382: my $hashref = &tie_domain_hash($udom, "nohist_courseids", &GDBM_WRCREAT()); 4383: if ($hashref) { 4384: while (my ($key,$value) = each(%$hashref)) { 4385: my ($unesc_key,$lasttime_key,$lasttime,$is_hash,%val, 4386: %unesc_val,$selfenroll_end,$selfenroll_types,$created, 4387: $context); 4388: $unesc_key = &unescape($key); 4389: if ($unesc_key =~ /^lasttime:/) { 4390: next; 4391: } else { 4392: $lasttime_key = &escape('lasttime:'.$unesc_key); 4393: } 4394: if ($hashref->{$lasttime_key} ne '') { 4395: $lasttime = $hashref->{$lasttime_key}; 4396: next if ($lasttime<$since); 4397: } 4398: my ($canclone,$valchange); 4399: my $items = &Apache::lonnet::thaw_unescape($value); 4400: if (ref($items) eq 'HASH') { 4401: if ($hashref->{$lasttime_key} eq '') { 4402: next if ($since > 1); 4403: } 4404: $is_hash = 1; 4405: if ($domcloner) { 4406: $canclone = 1; 4407: } elsif (defined($clonerudom)) { 4408: if ($items->{'cloners'}) { 4409: my @cloneable = split(',',$items->{'cloners'}); 4410: if (@cloneable) { 4411: if (grep(/^\*$/,@cloneable)) { 4412: $canclone = 1; 4413: } elsif (grep(/^\*:\Q$clonerudom\E$/,@cloneable)) { 4414: $canclone = 1; 4415: } elsif (grep(/^\Q$cloneruname\E:\Q$clonerudom\E$/,@cloneable)) { 4416: $canclone = 1; 4417: } 4418: } 4419: unless ($canclone) { 4420: if ($cloneruname ne '' && $clonerudom ne '') { 4421: if ($cc_clone{$unesc_key}) { 4422: $canclone = 1; 4423: $items->{'cloners'} .= ','.$cloneruname.':'. 4424: $clonerudom; 4425: $valchange = 1; 4426: } 4427: } 4428: } 4429: } elsif (defined($cloneruname)) { 4430: if ($cc_clone{$unesc_key}) { 4431: $canclone = 1; 4432: $items->{'cloners'} = $cloneruname.':'.$clonerudom; 4433: $valchange = 1; 4434: } 4435: unless ($canclone) { 4436: if ($items->{'owner'} =~ /:/) { 4437: if ($items->{'owner'} eq $cloner) { 4438: $canclone = 1; 4439: } 4440: } elsif ($cloner eq $items->{'owner'}.':'.$udom) { 4441: $canclone = 1; 4442: } 4443: if ($canclone) { 4444: $items->{'cloners'} = $cloneruname.':'.$clonerudom; 4445: $valchange = 1; 4446: } 4447: } 4448: } 4449: } 4450: if ($unpack || !$rtn_as_hash) { 4451: $unesc_val{'descr'} = $items->{'description'}; 4452: $unesc_val{'inst_code'} = $items->{'inst_code'}; 4453: $unesc_val{'owner'} = $items->{'owner'}; 4454: $unesc_val{'type'} = $items->{'type'}; 4455: $unesc_val{'cloners'} = $items->{'cloners'}; 4456: $unesc_val{'created'} = $items->{'created'}; 4457: $unesc_val{'context'} = $items->{'context'}; 4458: } 4459: $selfenroll_types = $items->{'selfenroll_types'}; 4460: $selfenroll_end = $items->{'selfenroll_end_date'}; 4461: $created = $items->{'created'}; 4462: $context = $items->{'context'}; 4463: if ($hasuniquecode ne '.') { 4464: next unless ($items->{'uniquecode'}); 4465: } 4466: if ($selfenrollonly) { 4467: next if (!$selfenroll_types); 4468: if (($selfenroll_end > 0) && ($selfenroll_end <= $now)) { 4469: next; 4470: } 4471: } 4472: if ($creationcontext ne '.') { 4473: next if (($context ne '') && ($context ne $creationcontext)); 4474: } 4475: if ($createdbefore > 0) { 4476: next if (($created eq '') || ($created > $createdbefore)); 4477: } 4478: if ($createdafter > 0) { 4479: next if (($created eq '') || ($created <= $createdafter)); 4480: } 4481: if ($catfilter ne '') { 4482: next if ($items->{'categories'} eq ''); 4483: my @categories = split('&',$items->{'categories'}); 4484: next if (@categories == 0); 4485: my @subcats = split('&',$catfilter); 4486: my $matchcat = 0; 4487: foreach my $cat (@categories) { 4488: if (grep(/^\Q$cat\E$/,@subcats)) { 4489: $matchcat = 1; 4490: last; 4491: } 4492: } 4493: next if (!$matchcat); 4494: } 4495: if ($caller eq 'coursecatalog') { 4496: if ($items->{'hidefromcat'} eq 'yes') { 4497: next if !$showhidden; 4498: } 4499: } 4500: } else { 4501: next if ($catfilter ne ''); 4502: next if ($selfenrollonly); 4503: next if ($createdbefore || $createdafter); 4504: next if ($creationcontext ne '.'); 4505: if ((defined($clonerudom)) && (defined($cloneruname))) { 4506: if ($cc_clone{$unesc_key}) { 4507: $canclone = 1; 4508: $val{'cloners'} = &escape($cloneruname.':'.$clonerudom); 4509: } 4510: } 4511: $is_hash = 0; 4512: my @courseitems = split(/:/,$value); 4513: $lasttime = pop(@courseitems); 4514: if ($hashref->{$lasttime_key} eq '') { 4515: next if ($lasttime<$since); 4516: } 4517: ($val{'descr'},$val{'inst_code'},$val{'owner'},$val{'type'}) = @courseitems; 4518: } 4519: if ($cloneonly) { 4520: next unless ($canclone); 4521: } 4522: my $match = 1; 4523: if ($description ne '.') { 4524: if (!$is_hash) { 4525: $unesc_val{'descr'} = &unescape($val{'descr'}); 4526: } 4527: if (eval{$unesc_val{'descr'} !~ /\Q$description\E/i}) { 4528: $match = 0; 4529: } 4530: } 4531: if ($instcodefilter ne '.') { 4532: if (!$is_hash) { 4533: $unesc_val{'inst_code'} = &unescape($val{'inst_code'}); 4534: } 4535: if ($regexp_ok == 1) { 4536: if (eval{$unesc_val{'inst_code'} !~ /$instcodefilter/}) { 4537: $match = 0; 4538: } 4539: } elsif ($regexp_ok == -1) { 4540: if (eval{$unesc_val{'inst_code'} =~ /$instcodefilter/}) { 4541: $match = 0; 4542: } 4543: } else { 4544: if (eval{$unesc_val{'inst_code'} !~ /\Q$instcodefilter\E/i}) { 4545: $match = 0; 4546: } 4547: } 4548: } 4549: if ($ownerfilter ne '.') { 4550: if (!$is_hash) { 4551: $unesc_val{'owner'} = &unescape($val{'owner'}); 4552: } 4553: if (($ownerunamefilter ne '') && ($ownerdomfilter ne '')) { 4554: if ($unesc_val{'owner'} =~ /:/) { 4555: if (eval{$unesc_val{'owner'} !~ 4556: /\Q$ownerunamefilter\E:\Q$ownerdomfilter\E$/i}) { 4557: $match = 0; 4558: } 4559: } else { 4560: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E/i}) { 4561: $match = 0; 4562: } 4563: } 4564: } elsif ($ownerunamefilter ne '') { 4565: if ($unesc_val{'owner'} =~ /:/) { 4566: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E:[^:]+$/i}) { 4567: $match = 0; 4568: } 4569: } else { 4570: if (eval{$unesc_val{'owner'} !~ /\Q$ownerunamefilter\E/i}) { 4571: $match = 0; 4572: } 4573: } 4574: } elsif ($ownerdomfilter ne '') { 4575: if ($unesc_val{'owner'} =~ /:/) { 4576: if (eval{$unesc_val{'owner'} !~ /^[^:]+:\Q$ownerdomfilter\E/}) { 4577: $match = 0; 4578: } 4579: } else { 4580: if ($ownerdomfilter ne $udom) { 4581: $match = 0; 4582: } 4583: } 4584: } 4585: } 4586: if ($coursefilter ne '.') { 4587: if (eval{$unesc_key !~ /^$udom(_)\Q$coursefilter\E$/}) { 4588: $match = 0; 4589: } 4590: } 4591: if ($typefilter ne '.') { 4592: if (!$is_hash) { 4593: $unesc_val{'type'} = &unescape($val{'type'}); 4594: } 4595: if ($unesc_val{'type'} eq '') { 4596: if ($typefilter ne 'Course') { 4597: $match = 0; 4598: } 4599: } else { 4600: if (eval{$unesc_val{'type'} !~ /^\Q$typefilter\E$/}) { 4601: $match = 0; 4602: } 4603: } 4604: } 4605: if ($match == 1) { 4606: if ($rtn_as_hash) { 4607: if ($is_hash) { 4608: if ($valchange) { 4609: my $newvalue = &Apache::lonnet::freeze_escape($items); 4610: $qresult.=$key.'='.$newvalue.'&'; 4611: } else { 4612: $qresult.=$key.'='.$value.'&'; 4613: } 4614: } else { 4615: my %rtnhash = ( 'description' => &unescape($val{'descr'}), 4616: 'inst_code' => &unescape($val{'inst_code'}), 4617: 'owner' => &unescape($val{'owner'}), 4618: 'type' => &unescape($val{'type'}), 4619: 'cloners' => &unescape($val{'cloners'}), 4620: ); 4621: my $items = &Apache::lonnet::freeze_escape(\%rtnhash); 4622: $qresult.=$key.'='.$items.'&'; 4623: } 4624: } else { 4625: if ($is_hash) { 4626: $qresult .= $key.'='.&escape($unesc_val{'descr'}).':'. 4627: &escape($unesc_val{'inst_code'}).':'. 4628: &escape($unesc_val{'owner'}).'&'; 4629: } else { 4630: $qresult .= $key.'='.$val{'descr'}.':'.$val{'inst_code'}. 4631: ':'.$val{'owner'}.'&'; 4632: } 4633: } 4634: } 4635: } 4636: if (&untie_domain_hash($hashref)) { 4637: chop($qresult); 4638: &Reply($client, \$qresult, $userinput); 4639: } else { 4640: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ". 4641: "while attempting courseiddump\n", $userinput); 4642: } 4643: } else { 4644: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ". 4645: "while attempting courseiddump\n", $userinput); 4646: } 4647: return 1; 4648: } 4649: &register_handler("courseiddump", \&dump_course_id_handler, 0, 1, 0); 4650: 4651: sub course_lastaccess_handler { 4652: my ($cmd, $tail, $client) = @_; 4653: my $userinput = "$cmd:$tail"; 4654: my ($cdom,$cnum) = split(':',$tail); 4655: my (%lastaccess,$qresult); 4656: my $hashref = &tie_domain_hash($cdom, "nohist_courseids", &GDBM_WRCREAT()); 4657: if ($hashref) { 4658: while (my ($key,$value) = each(%$hashref)) { 4659: my ($unesc_key,$lasttime); 4660: $unesc_key = &unescape($key); 4661: if ($cnum) { 4662: next unless ($unesc_key =~ /\Q$cdom\E_\Q$cnum\E$/); 4663: } 4664: if ($unesc_key =~ /^lasttime:($LONCAPA::match_domain\_$LONCAPA::match_courseid)/) { 4665: $lastaccess{$1} = $value; 4666: } else { 4667: my $items = &Apache::lonnet::thaw_unescape($value); 4668: if (ref($items) eq 'HASH') { 4669: unless ($lastaccess{$unesc_key}) { 4670: $lastaccess{$unesc_key} = ''; 4671: } 4672: } else { 4673: my @courseitems = split(':',$value); 4674: $lastaccess{$unesc_key} = pop(@courseitems); 4675: } 4676: } 4677: } 4678: foreach my $cid (sort(keys(%lastaccess))) { 4679: $qresult.=&escape($cid).'='.$lastaccess{$cid}.'&'; 4680: } 4681: if (&untie_domain_hash($hashref)) { 4682: if ($qresult) { 4683: chop($qresult); 4684: } 4685: &Reply($client, \$qresult, $userinput); 4686: } else { 4687: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ". 4688: "while attempting lastacourseaccess\n", $userinput); 4689: } 4690: } else { 4691: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ". 4692: "while attempting lastcourseaccess\n", $userinput); 4693: } 4694: return 1; 4695: } 4696: &register_handler("courselastaccess",\&course_lastaccess_handler, 0, 1, 0); 4697: 4698: sub course_sessions_handler { 4699: my ($cmd, $tail, $client) = @_; 4700: my $userinput = "$cmd:$tail"; 4701: my ($cdom,$cnum,$lastactivity) = split(':',$tail); 4702: my $dbsuffix = '_'.$cdom.'_'.$cnum.'.db'; 4703: my (%sessions,$qresult); 4704: my $now=time; 4705: if (opendir(DIR,$perlvar{'lonIDsDir'})) { 4706: my $filename; 4707: while ($filename=readdir(DIR)) { 4708: next if ($filename=~/^\./); 4709: next if ($filename=~/^publicuser_/); 4710: next if ($filename=~/^[a-f0-9]+_(linked|lti_\d+)\.id$/); 4711: if ($filename =~ /^($LONCAPA::match_username)_\d+_($LONCAPA::match_domain)_/) { 4712: my ($uname,$udom) = ($1,$2); 4713: next unless (-e "$perlvar{'lonDaemons'}/tmp/$uname$dbsuffix"); 4714: my $mtime = (stat("$perlvar{'lonIDsDir'}/$filename"))[9]; 4715: if ($lastactivity < 0) { 4716: next if ($mtime-$now > $lastactivity); 4717: } else { 4718: next if ($now-$mtime > $lastactivity); 4719: } 4720: $sessions{$uname.':'.$udom} = $mtime; 4721: } 4722: } 4723: closedir(DIR); 4724: } 4725: foreach my $user (keys(%sessions)) { 4726: $qresult.=&escape($user).'='.$sessions{$user}.'&'; 4727: } 4728: if ($qresult) { 4729: chop($qresult); 4730: } 4731: &Reply($client, \$qresult, $userinput); 4732: return 1; 4733: } 4734: &register_handler("coursesessions",\&course_sessions_handler, 0, 1, 0); 4735: 4736: # 4737: # Puts an unencrypted entry in a namespace db file at the domain level 4738: # 4739: # Parameters: 4740: # $cmd - The command that got us here. 4741: # $tail - Tail of the command (remaining parameters). 4742: # $client - File descriptor connected to client. 4743: # Returns 4744: # 0 - Requested to exit, caller should shut down. 4745: # 1 - Continue processing. 4746: # Side effects: 4747: # reply is written to $client. 4748: # 4749: sub put_domain_handler { 4750: my ($cmd,$tail,$client) = @_; 4751: 4752: my $userinput = "$cmd:$tail"; 4753: 4754: my ($udom,$namespace,$what) =split(/:/,$tail,3); 4755: chomp($what); 4756: my @pairs=split(/\&/,$what); 4757: my $hashref = &tie_domain_hash($udom, "$namespace", &GDBM_WRCREAT(), 4758: "P", $what); 4759: if ($hashref) { 4760: foreach my $pair (@pairs) { 4761: my ($key,$value)=split(/=/,$pair); 4762: $hashref->{$key}=$value; 4763: } 4764: if (&untie_domain_hash($hashref)) { 4765: &Reply($client, "ok\n", $userinput); 4766: } else { 4767: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ". 4768: "while attempting putdom\n", $userinput); 4769: } 4770: } else { 4771: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ". 4772: "while attempting putdom\n", $userinput); 4773: } 4774: 4775: return 1; 4776: } 4777: &register_handler("putdom", \&put_domain_handler, 0, 1, 0); 4778: 4779: # Unencrypted get from the namespace database file at the domain level. 4780: # This function retrieves a keyed item from a specific named database in the 4781: # domain directory. 4782: # 4783: # Parameters: 4784: # $cmd - Command request keyword (getdom). 4785: # $tail - Tail of the command. This is a colon separated list 4786: # consisting of the domain and the 'namespace' 4787: # which selects the gdbm file to do the lookup in, 4788: # & separated list of keys to lookup. Note that 4789: # the values are returned as an & separated list too. 4790: # $client - File descriptor open on the client. 4791: # Returns: 4792: # 1 - Continue processing. 4793: # 0 - Exit. 4794: # Side effects: 4795: # reply is written to $client. 4796: # 4797: 4798: sub get_domain_handler { 4799: my ($cmd, $tail, $client) = @_; 4800: 4801: my $userinput = "$cmd:$tail"; 4802: 4803: my ($udom,$namespace,$what)=split(/:/,$tail,3); 4804: if (($namespace =~ /^enc/) || ($namespace eq 'private')) { 4805: &Failure( $client, "refused\n", $userinput); 4806: } else { 4807: my $res = LONCAPA::Lond::get_dom($userinput); 4808: if ($res =~ /^error:/) { 4809: &Failure($client, \$res, $userinput); 4810: } else { 4811: &Reply($client, \$res, $userinput); 4812: } 4813: } 4814: 4815: return 1; 4816: } 4817: &register_handler("getdom", \&get_domain_handler, 0, 1, 0); 4818: 4819: sub encrypted_get_domain_handler { 4820: my ($cmd, $tail, $client) = @_; 4821: 4822: my $userinput = "$cmd:$tail"; 4823: 4824: my ($udom,$namespace,$what) = split(/:/,$tail,3); 4825: if ($namespace eq 'private') { 4826: &Failure( $client, "refused\n", $userinput); 4827: } else { 4828: my $res = LONCAPA::Lond::get_dom($userinput); 4829: if ($res =~ /^error:/) { 4830: &Failure($client, \$res, $userinput); 4831: } else { 4832: if ($cipher) { 4833: my $cmdlength=length($res); 4834: $res.=" "; 4835: my $encres=''; 4836: for (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) { 4837: $encres.= unpack("H16", 4838: $cipher->encrypt(substr($res, 4839: $encidx, 4840: 8))); 4841: } 4842: &Reply( $client,"enc:$cmdlength:$encres\n",$userinput); 4843: } else { 4844: &Failure( $client, "error:no_key\n",$userinput); 4845: } 4846: } 4847: } 4848: return 1; 4849: } 4850: &register_handler("egetdom", \&encrypted_get_domain_handler, 1, 1, 0); 4851: 4852: # 4853: # Encrypted get from the namespace database file at the domain level. 4854: # This function retrieves a keyed item from a specific named database in the 4855: # domain directory. 4856: # 4857: # Parameters: 4858: # $cmd - Command request keyword (lti). 4859: # $tail - Tail of the command. This is a colon-separated list 4860: # consisting of the domain, coursenum, if for LTI- 4861: # enabled deep-linking to course content using 4862: # link protection configured within a course, 4863: # context (=deeplink) if for LTI-enabled deep-linking 4864: # to course content using LTI Provider settings 4865: # configured within a course's domain, the (escaped) 4866: # launch URL, the (escaped) method (typically POST), 4867: # and a frozen hash of the LTI launch parameters 4868: # from the LTI payload. 4869: # $client - File descriptor open on the client. 4870: # Returns: 4871: # 1 - Continue processing. 4872: # 0 - Exit. 4873: # Side effects: 4874: # The reply will contain an LTI itemID, if the signed LTI payload 4875: # could be verified using the consumer key and the shared secret 4876: # available for that key (for the itemID) for either the course or domain, 4877: # depending on values for cnum and context. The reply is encrypted before 4878: # being written to $client. 4879: # 4880: sub lti_handler { 4881: my ($cmd, $tail, $client) = @_; 4882: 4883: my $userinput = "$cmd:$tail"; 4884: 4885: my ($cdom,$cnum,$context,$escurl,$escmethod,$items) = split(/:/,$tail); 4886: my $url = &unescape($escurl); 4887: my $method = &unescape($escmethod); 4888: my $params = &Apache::lonnet::thaw_unescape($items); 4889: my $res; 4890: if ($cnum ne '') { 4891: $res = &LONCAPA::Lond::crslti_itemid($cdom,$cnum,$url,$method,$params,$perlvar{'lonVersion'}); 4892: } else { 4893: $res = &LONCAPA::Lond::domlti_itemid($cdom,$context,$url,$method,$params,$perlvar{'lonVersion'}); 4894: } 4895: if ($res =~ /^error:/) { 4896: &Failure($client, \$res, $userinput); 4897: } else { 4898: if ($cipher) { 4899: my $cmdlength=length($res); 4900: $res.=" "; 4901: my $encres=''; 4902: for (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) { 4903: $encres.= unpack("H16", 4904: $cipher->encrypt(substr($res, 4905: $encidx, 4906: 8))); 4907: } 4908: &Reply( $client,"enc:$cmdlength:$encres\n",$userinput); 4909: } else { 4910: &Failure( $client, "error:no_key\n",$userinput); 4911: } 4912: } 4913: return 1; 4914: } 4915: &register_handler("lti", \&lti_handler, 1, 1, 0); 4916: 4917: # 4918: # Data for LTI payload (received encrypted) are unencrypted and 4919: # then signed with the appropriate key and secret, before re-encrypting 4920: # the signed payload which is sent to the client for unencryption by 4921: # the caller: lonnet::sign_lti()) before dispatch either to a web browser 4922: # (launch) or to a remote web service (roster, logout, or grade). 4923: # 4924: # Parameters: 4925: # $cmd - Command request keyword (signlti). 4926: # $tail - Tail of the command. This is a colon-separated list 4927: # consisting of the domain, coursenum (if for an External 4928: # Tool defined in a course), crsdef (true if defined in 4929: # a course), type (linkprot or lti), 4930: # context (launch, roster, logout, or grade), 4931: # escaped launch URL, numeric ID of external tool, 4932: # version number for encryption key (if tool's LTI secret was 4933: # encrypted before storing), a frozen hash of LTI launch 4934: # parameters, and a frozen hash of LTI information, 4935: # (e.g., method => 'HMAC-SHA1', 4936: # respfmt => 'to_authorization_header'). 4937: # $client - File descriptor open on the client. 4938: # Returns: 4939: # 1 - Continue processing. 4940: # 0 - Exit. 4941: # Side effects: 4942: # The reply will contain the LTI payload, as & separated key=value pairs, 4943: # where value is itself a frozen hash, if the required key and secret 4944: # for the specific tool ID are available. The payload data are retrieved from 4945: # a call to Lond::sign_lti_payload(), and the reply is encrypted before being 4946: # written to $client. 4947: # 4948: sub sign_lti_handler { 4949: my ($cmd, $tail, $client) = @_; 4950: 4951: my $userinput = "$cmd:$tail"; 4952: 4953: my ($cdom,$cnum,$crsdef,$type,$context,$escurl, 4954: $ltinum,$keynum,$paramsref,$inforef) = split(/:/,$tail); 4955: my $url = &unescape($escurl); 4956: my $params = &Apache::lonnet::thaw_unescape($paramsref); 4957: my $info = &Apache::lonnet::thaw_unescape($inforef); 4958: my $res = 4959: &LONCAPA::Lond::sign_lti_payload($cdom,$cnum,$crsdef,$type,$context,$url,$ltinum, 4960: $keynum,$perlvar{'lonVersion'},$params,$info); 4961: my $result; 4962: if (ref($res) eq 'HASH') { 4963: foreach my $key (keys(%{$res})) { 4964: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($res->{$key}).'&'; 4965: } 4966: $result =~ s/\&$//; 4967: } else { 4968: $result = $res; 4969: } 4970: if ($result =~ /^error:/) { 4971: &Failure($client, \$result, $userinput); 4972: } else { 4973: if ($cipher) { 4974: my $cmdlength=length($result); 4975: $result.=" "; 4976: my $encres=''; 4977: for (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) { 4978: $encres.= unpack("H16", 4979: $cipher->encrypt(substr($result, 4980: $encidx, 4981: 8))); 4982: } 4983: &Reply( $client,"enc:$cmdlength:$encres\n",$userinput); 4984: } else { 4985: &Failure( $client, "error:no_key\n",$userinput); 4986: } 4987: } 4988: return 1; 4989: } 4990: &register_handler("signlti", \&sign_lti_handler, 1, 1, 0); 4991: 4992: # 4993: # Puts an id to a domains id database. 4994: # 4995: # Parameters: 4996: # $cmd - The command that triggered us. 4997: # $tail - Remainder of the request other than the command. This is a 4998: # colon separated list containing: 4999: # $domain - The domain for which we are writing the id. 5000: # $pairs - The id info to write... this is and & separated list 5001: # of keyword=value. 5002: # $client - Socket open on the client. 5003: # Returns: 5004: # 1 - Continue processing. 5005: # Side effects: 5006: # reply is written to $client. 5007: # 5008: sub put_id_handler { 5009: my ($cmd,$tail,$client) = @_; 5010: 5011: 5012: my $userinput = "$cmd:$tail"; 5013: 5014: my ($udom,$what)=split(/:/,$tail); 5015: chomp($what); 5016: my @pairs=split(/\&/,$what); 5017: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_WRCREAT(), 5018: "P", $what); 5019: if ($hashref) { 5020: foreach my $pair (@pairs) { 5021: my ($key,$value)=split(/=/,$pair); 5022: $hashref->{$key}=$value; 5023: } 5024: if (&untie_domain_hash($hashref)) { 5025: &Reply($client, "ok\n", $userinput); 5026: } else { 5027: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ". 5028: "while attempting idput\n", $userinput); 5029: } 5030: } else { 5031: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ". 5032: "while attempting idput\n", $userinput); 5033: } 5034: 5035: return 1; 5036: } 5037: &register_handler("idput", \&put_id_handler, 0, 1, 0); 5038: 5039: # 5040: # Retrieves a set of id values from the id database. 5041: # Returns an & separated list of results, one for each requested id to the 5042: # client. 5043: # 5044: # Parameters: 5045: # $cmd - Command keyword that caused us to be dispatched. 5046: # $tail - Tail of the command. Consists of a colon separated: 5047: # domain - the domain whose id table we dump 5048: # ids Consists of an & separated list of 5049: # id keywords whose values will be fetched. 5050: # nonexisting keywords will have an empty value. 5051: # $client - Socket open on the client. 5052: # 5053: # Returns: 5054: # 1 - indicating processing should continue. 5055: # Side effects: 5056: # An & separated list of results is written to $client. 5057: # 5058: sub get_id_handler { 5059: my ($cmd, $tail, $client) = @_; 5060: 5061: 5062: my $userinput = "$client:$tail"; 5063: 5064: my ($udom,$what)=split(/:/,$tail); 5065: chomp($what); 5066: my @queries=split(/\&/,$what); 5067: my $qresult=''; 5068: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_READER()); 5069: if ($hashref) { 5070: for (my $i=0;$i<=$#queries;$i++) { 5071: $qresult.="$hashref->{$queries[$i]}&"; 5072: } 5073: if (&untie_domain_hash($hashref)) { 5074: $qresult=~s/\&$//; 5075: &Reply($client, \$qresult, $userinput); 5076: } else { 5077: &Failure( $client, "error: ".($!+0)." untie(GDBM) Failed ". 5078: "while attempting idget\n",$userinput); 5079: } 5080: } else { 5081: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ". 5082: "while attempting idget\n",$userinput); 5083: } 5084: 5085: return 1; 5086: } 5087: &register_handler("idget", \&get_id_handler, 0, 1, 0); 5088: 5089: # Deletes one or more ids in a domain's id database. 5090: # 5091: # Parameters: 5092: # $cmd - Command keyword (iddel). 5093: # $tail - Command tail. In this case a colon 5094: # separated list containing: 5095: # The domain for which we are deleting the id(s). 5096: # &-separated list of id(s) to delete. 5097: # $client - File open on client socket. 5098: # Returns: 5099: # 1 - Continue processing 5100: # 0 - Exit server. 5101: # 5102: # 5103: 5104: sub del_id_handler { 5105: my ($cmd,$tail,$client) = @_; 5106: 5107: my $userinput = "$cmd:$tail"; 5108: 5109: my ($udom,$what)=split(/:/,$tail); 5110: chomp($what); 5111: my $hashref = &tie_domain_hash($udom, "ids", &GDBM_WRCREAT(), 5112: "D", $what); 5113: if ($hashref) { 5114: my @keys=split(/\&/,$what); 5115: foreach my $key (@keys) { 5116: delete($hashref->{$key}); 5117: } 5118: if (&untie_user_hash($hashref)) { 5119: &Reply($client, "ok\n", $userinput); 5120: } else { 5121: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ". 5122: "while attempting iddel\n", $userinput); 5123: } 5124: } else { 5125: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ". 5126: "while attempting iddel\n", $userinput); 5127: } 5128: return 1; 5129: } 5130: &register_handler("iddel", \&del_id_handler, 0, 1, 0); 5131: 5132: # 5133: # Puts broadcast e-mail sent by Domain Coordinator in nohist_dcmail database 5134: # 5135: # Parameters 5136: # $cmd - Command keyword that caused us to be dispatched. 5137: # $tail - Tail of the command. Consists of a colon separated: 5138: # domain - the domain whose dcmail we are recording 5139: # email Consists of key=value pair 5140: # where key is unique msgid 5141: # and value is message (in XML) 5142: # $client - Socket open on the client. 5143: # 5144: # Returns: 5145: # 1 - indicating processing should continue. 5146: # Side effects 5147: # reply is written to $client. 5148: # 5149: sub put_dcmail_handler { 5150: my ($cmd,$tail,$client) = @_; 5151: my $userinput = "$cmd:$tail"; 5152: 5153: 5154: my ($udom,$what)=split(/:/,$tail); 5155: chomp($what); 5156: my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT()); 5157: if ($hashref) { 5158: my ($key,$value)=split(/=/,$what); 5159: $hashref->{$key}=$value; 5160: } 5161: if (&untie_domain_hash($hashref)) { 5162: &Reply($client, "ok\n", $userinput); 5163: } else { 5164: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ". 5165: "while attempting dcmailput\n", $userinput); 5166: } 5167: return 1; 5168: } 5169: &register_handler("dcmailput", \&put_dcmail_handler, 0, 1, 0); 5170: 5171: # 5172: # Retrieves broadcast e-mail from nohist_dcmail database 5173: # Returns to client an & separated list of key=value pairs, 5174: # where key is msgid and value is message information. 5175: # 5176: # Parameters 5177: # $cmd - Command keyword that caused us to be dispatched. 5178: # $tail - Tail of the command. Consists of a colon separated: 5179: # domain - the domain whose dcmail table we dump 5180: # startfilter - beginning of time window 5181: # endfilter - end of time window 5182: # sendersfilter - & separated list of username:domain 5183: # for senders to search for. 5184: # $client - Socket open on the client. 5185: # 5186: # Returns: 5187: # 1 - indicating processing should continue. 5188: # Side effects 5189: # reply (& separated list of msgid=messageinfo pairs) is 5190: # written to $client. 5191: # 5192: sub dump_dcmail_handler { 5193: my ($cmd, $tail, $client) = @_; 5194: 5195: my $userinput = "$cmd:$tail"; 5196: my ($udom,$startfilter,$endfilter,$sendersfilter) = split(/:/,$tail); 5197: chomp($sendersfilter); 5198: my @senders = (); 5199: if (defined($startfilter)) { 5200: $startfilter=&unescape($startfilter); 5201: } else { 5202: $startfilter='.'; 5203: } 5204: if (defined($endfilter)) { 5205: $endfilter=&unescape($endfilter); 5206: } else { 5207: $endfilter='.'; 5208: } 5209: if (defined($sendersfilter)) { 5210: $sendersfilter=&unescape($sendersfilter); 5211: @senders = map { &unescape($_) } split(/\&/,$sendersfilter); 5212: } 5213: 5214: my $qresult=''; 5215: my $hashref = &tie_domain_hash($udom, "nohist_dcmail", &GDBM_WRCREAT()); 5216: if ($hashref) { 5217: while (my ($key,$value) = each(%$hashref)) { 5218: my $match = 1; 5219: my ($timestamp,$subj,$uname,$udom) = 5220: split(/:/,&unescape(&unescape($key)),5); # yes, twice really 5221: $subj = &unescape($subj); 5222: unless ($startfilter eq '.' || !defined($startfilter)) { 5223: if ($timestamp < $startfilter) { 5224: $match = 0; 5225: } 5226: } 5227: unless ($endfilter eq '.' || !defined($endfilter)) { 5228: if ($timestamp > $endfilter) { 5229: $match = 0; 5230: } 5231: } 5232: unless (@senders < 1) { 5233: unless (grep/^$uname:$udom$/,@senders) { 5234: $match = 0; 5235: } 5236: } 5237: if ($match == 1) { 5238: $qresult.=$key.'='.$value.'&'; 5239: } 5240: } 5241: if (&untie_domain_hash($hashref)) { 5242: chop($qresult); 5243: &Reply($client, \$qresult, $userinput); 5244: } else { 5245: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ". 5246: "while attempting dcmaildump\n", $userinput); 5247: } 5248: } else { 5249: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ". 5250: "while attempting dcmaildump\n", $userinput); 5251: } 5252: return 1; 5253: } 5254: 5255: &register_handler("dcmaildump", \&dump_dcmail_handler, 0, 1, 0); 5256: 5257: # 5258: # Puts domain roles in nohist_domainroles database 5259: # 5260: # Parameters 5261: # $cmd - Command keyword that caused us to be dispatched. 5262: # $tail - Tail of the command. Consists of a colon separated: 5263: # domain - the domain whose roles we are recording 5264: # role - Consists of key=value pair 5265: # where key is unique role 5266: # and value is start/end date information 5267: # $client - Socket open on the client. 5268: # 5269: # Returns: 5270: # 1 - indicating processing should continue. 5271: # Side effects 5272: # reply is written to $client. 5273: # 5274: 5275: sub put_domainroles_handler { 5276: my ($cmd,$tail,$client) = @_; 5277: 5278: my $userinput = "$cmd:$tail"; 5279: my ($udom,$what)=split(/:/,$tail); 5280: chomp($what); 5281: my @pairs=split(/\&/,$what); 5282: my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT()); 5283: if ($hashref) { 5284: foreach my $pair (@pairs) { 5285: my ($key,$value)=split(/=/,$pair); 5286: $hashref->{$key}=$value; 5287: } 5288: if (&untie_domain_hash($hashref)) { 5289: &Reply($client, "ok\n", $userinput); 5290: } else { 5291: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ". 5292: "while attempting domroleput\n", $userinput); 5293: } 5294: } else { 5295: &Failure( $client, "error: ".($!+0)." tie(GDBM) Failed ". 5296: "while attempting domroleput\n", $userinput); 5297: } 5298: 5299: return 1; 5300: } 5301: 5302: &register_handler("domroleput", \&put_domainroles_handler, 0, 1, 0); 5303: 5304: # 5305: # Retrieves domain roles from nohist_domainroles database 5306: # Returns to client an & separated list of key=value pairs, 5307: # where key is role and value is start and end date information. 5308: # 5309: # Parameters 5310: # $cmd - Command keyword that caused us to be dispatched. 5311: # $tail - Tail of the command. Consists of a colon separated: 5312: # domain - the domain whose domain roles table we dump 5313: # $client - Socket open on the client. 5314: # 5315: # Returns: 5316: # 1 - indicating processing should continue. 5317: # Side effects 5318: # reply (& separated list of role=start/end info pairs) is 5319: # written to $client. 5320: # 5321: sub dump_domainroles_handler { 5322: my ($cmd, $tail, $client) = @_; 5323: 5324: my $userinput = "$cmd:$tail"; 5325: my ($udom,$startfilter,$endfilter,$rolesfilter) = split(/:/,$tail); 5326: chomp($rolesfilter); 5327: my @roles = (); 5328: if (defined($startfilter)) { 5329: $startfilter=&unescape($startfilter); 5330: } else { 5331: $startfilter='.'; 5332: } 5333: if (defined($endfilter)) { 5334: $endfilter=&unescape($endfilter); 5335: } else { 5336: $endfilter='.'; 5337: } 5338: if (defined($rolesfilter)) { 5339: $rolesfilter=&unescape($rolesfilter); 5340: @roles = split(/\&/,$rolesfilter); 5341: } 5342: 5343: my $hashref = &tie_domain_hash($udom, "nohist_domainroles", &GDBM_WRCREAT()); 5344: if ($hashref) { 5345: my $qresult = ''; 5346: while (my ($key,$value) = each(%$hashref)) { 5347: my $match = 1; 5348: my ($end,$start) = split(/:/,&unescape($value)); 5349: my ($trole,$uname,$udom,$runame,$rudom,$rsec) = split(/:/,&unescape($key)); 5350: unless (@roles < 1) { 5351: unless (grep/^\Q$trole\E$/,@roles) { 5352: $match = 0; 5353: next; 5354: } 5355: } 5356: unless ($startfilter eq '.' || !defined($startfilter)) { 5357: if ((defined($start)) && ($start >= $startfilter)) { 5358: $match = 0; 5359: next; 5360: } 5361: } 5362: unless ($endfilter eq '.' || !defined($endfilter)) { 5363: if ((defined($end)) && (($end > 0) && ($end <= $endfilter))) { 5364: $match = 0; 5365: next; 5366: } 5367: } 5368: if ($match == 1) { 5369: $qresult.=$key.'='.$value.'&'; 5370: } 5371: } 5372: if (&untie_domain_hash($hashref)) { 5373: chop($qresult); 5374: &Reply($client, \$qresult, $userinput); 5375: } else { 5376: &Failure($client, "error: ".($!+0)." untie(GDBM) Failed ". 5377: "while attempting domrolesdump\n", $userinput); 5378: } 5379: } else { 5380: &Failure($client, "error: ".($!+0)." tie(GDBM) Failed ". 5381: "while attempting domrolesdump\n", $userinput); 5382: } 5383: return 1; 5384: } 5385: 5386: &register_handler("domrolesdump", \&dump_domainroles_handler, 0, 1, 0); 5387: 5388: 5389: # Process the tmpput command I'm not sure what this does.. Seems to 5390: # create a file in the lonDaemons/tmp directory of the form $id.tmp 5391: # where Id is the client's ip concatenated with a sequence number. 5392: # The file will contain some value that is passed in. Is this e.g. 5393: # a login token? 5394: # 5395: # Parameters: 5396: # $cmd - The command that got us dispatched. 5397: # $tail - The remainder of the request following $cmd: 5398: # In this case this will be the contents of the file. 5399: # $client - Socket connected to the client. 5400: # Returns: 5401: # 1 indicating processing can continue. 5402: # Side effects: 5403: # A file is created in the local filesystem. 5404: # A reply is sent to the client. 5405: sub tmp_put_handler { 5406: my ($cmd, $what, $client) = @_; 5407: 5408: my $userinput = "$cmd:$what"; # Reconstruct for logging. 5409: 5410: my ($record,$context) = split(/:/,$what); 5411: if ($context ne '') { 5412: chomp($context); 5413: $context = &unescape($context); 5414: } 5415: my ($id,$store); 5416: $tmpsnum++; 5417: my $numtries = 0; 5418: my $execdir=$perlvar{'lonDaemons'}; 5419: if (($context eq 'resetpw') || ($context eq 'createaccount') || 5420: ($context eq 'sso') || ($context eq 'link') || ($context eq 'retry')) { 5421: $id = &md5_hex(&md5_hex(time.{}.rand().$$.$tmpsnum)); 5422: while ((-e "$execdir/tmp/$id.tmp") && ($numtries <10)) { 5423: undef($id); 5424: $id = &md5_hex(&md5_hex(time.{}.rand().$$.$tmpsnum)); 5425: $numtries ++; 5426: } 5427: } else { 5428: $id = $$.'_'.$clientip.'_'.$tmpsnum; 5429: } 5430: $id=~s/\W/\_/g; 5431: $record=~s/\n//g; 5432: if (($id ne '') && 5433: ($store=IO::File->new(">$execdir/tmp/$id.tmp"))) { 5434: print $store $record; 5435: close $store; 5436: &Reply($client, \$id, $userinput); 5437: } else { 5438: &Failure( $client, "error: ".($!+0)."IO::File->new Failed ". 5439: "while attempting tmpput\n", $userinput); 5440: } 5441: return 1; 5442: 5443: } 5444: &register_handler("tmpput", \&tmp_put_handler, 0, 1, 0); 5445: 5446: # Processes the tmpget command. This command returns the contents 5447: # of a temporary resource file(?) created via tmpput. 5448: # 5449: # Paramters: 5450: # $cmd - Command that got us dispatched. 5451: # $id - Tail of the command, contain the id of the resource 5452: # we want to fetch. 5453: # $client - socket open on the client. 5454: # Return: 5455: # 1 - Inidcating processing can continue. 5456: # Side effects: 5457: # A reply is sent to the client. 5458: # 5459: sub tmp_get_handler { 5460: my ($cmd, $id, $client) = @_; 5461: 5462: my $userinput = "$cmd:$id"; 5463: 5464: 5465: $id=~s/\W/\_/g; 5466: my $store; 5467: my $execdir=$perlvar{'lonDaemons'}; 5468: if ($store=IO::File->new("$execdir/tmp/$id.tmp")) { 5469: my $reply=<$store>; 5470: &Reply( $client, \$reply, $userinput); 5471: close $store; 5472: } else { 5473: &Failure( $client, "error: ".($!+0)."IO::File->new Failed ". 5474: "while attempting tmpget\n", $userinput); 5475: } 5476: 5477: return 1; 5478: } 5479: &register_handler("tmpget", \&tmp_get_handler, 0, 1, 0); 5480: 5481: # 5482: # Process the tmpdel command. This command deletes a temp resource 5483: # created by the tmpput command. 5484: # 5485: # Parameters: 5486: # $cmd - Command that got us here. 5487: # $id - Id of the temporary resource created. 5488: # $client - socket open on the client process. 5489: # 5490: # Returns: 5491: # 1 - Indicating processing should continue. 5492: # Side Effects: 5493: # A file is deleted 5494: # A reply is sent to the client. 5495: sub tmp_del_handler { 5496: my ($cmd, $id, $client) = @_; 5497: 5498: my $userinput= "$cmd:$id"; 5499: 5500: chomp($id); 5501: $id=~s/\W/\_/g; 5502: my $execdir=$perlvar{'lonDaemons'}; 5503: if (unlink("$execdir/tmp/$id.tmp")) { 5504: &Reply($client, "ok\n", $userinput); 5505: } else { 5506: &Failure( $client, "error: ".($!+0)."Unlink tmp Failed ". 5507: "while attempting tmpdel\n", $userinput); 5508: } 5509: 5510: return 1; 5511: 5512: } 5513: &register_handler("tmpdel", \&tmp_del_handler, 0, 1, 0); 5514: 5515: # 5516: # Process the updatebalcookie command. This command updates a 5517: # cookie in the lonBalancedir directory on a load balancer node. 5518: # 5519: # Parameters: 5520: # $cmd - Command that got us here. 5521: # $tail - Tail of the request (escaped cookie: escaped current entry) 5522: # 5523: # $client - socket open on the client process. 5524: # 5525: # Returns: 5526: # 1 - Indicating processing should continue. 5527: # Side Effects: 5528: # A cookie file is updated from the lonBalancedir directory 5529: # A reply is sent to the client. 5530: # 5531: sub update_balcookie_handler { 5532: my ($cmd, $tail, $client) = @_; 5533: 5534: my $userinput= "$cmd:$tail"; 5535: chomp($tail); 5536: my ($cookie,$lastentry) = map { &unescape($_) } (split(/:/,$tail)); 5537: 5538: my $updatedone; 5539: if ($cookie =~ /^$LONCAPA::match_domain\_$LONCAPA::match_username\_[a-f0-9]{32}$/) { 5540: my $execdir=$perlvar{'lonBalanceDir'}; 5541: if (-e "$execdir/$cookie.id") { 5542: my $doupdate; 5543: if (open(my $fh,'<',"$execdir/$cookie.id")) { 5544: while (my $line = <$fh>) { 5545: chomp($line); 5546: if ($line eq $lastentry) { 5547: $doupdate = 1; 5548: last; 5549: } 5550: } 5551: close($fh); 5552: } 5553: if ($doupdate) { 5554: if (open(my $fh,'>',"$execdir/$cookie.id")) { 5555: print $fh $clientname; 5556: close($fh); 5557: $updatedone = 1; 5558: } 5559: } 5560: } 5561: } 5562: if ($updatedone) { 5563: &Reply($client, "ok\n", $userinput); 5564: } else { 5565: &Failure( $client, "error: ".($!+0)."file update failed ". 5566: "while attempting updatebalcookie\n", $userinput); 5567: } 5568: return 1; 5569: } 5570: &register_handler("updatebalcookie", \&update_balcookie_handler, 0, 1, 0); 5571: 5572: # 5573: # Process the delbalcookie command. This command deletes a balancer 5574: # cookie in the lonBalancedir directory on a load balancer node. 5575: # 5576: # Parameters: 5577: # $cmd - Command that got us here. 5578: # $cookie - Cookie to be deleted. 5579: # $client - socket open on the client process. 5580: # 5581: # Returns: 5582: # 1 - Indicating processing should continue. 5583: # Side Effects: 5584: # A cookie file is deleted from the lonBalancedir directory 5585: # A reply is sent to the client. 5586: sub del_balcookie_handler { 5587: my ($cmd, $cookie, $client) = @_; 5588: 5589: my $userinput= "$cmd:$cookie"; 5590: 5591: chomp($cookie); 5592: $cookie = &unescape($cookie); 5593: my $deleted = ''; 5594: if ($cookie =~ /^$LONCAPA::match_domain\_$LONCAPA::match_username\_[a-f0-9]{32}$/) { 5595: my $execdir=$perlvar{'lonBalanceDir'}; 5596: if (-e "$execdir/$cookie.id") { 5597: if (open(my $fh,'<',"$execdir/$cookie.id")) { 5598: my $dodelete; 5599: while (my $line = <$fh>) { 5600: chomp($line); 5601: if ($line eq $clientname) { 5602: $dodelete = 1; 5603: last; 5604: } 5605: } 5606: close($fh); 5607: if ($dodelete) { 5608: if (unlink("$execdir/$cookie.id")) { 5609: $deleted = 1; 5610: } 5611: } 5612: } 5613: } 5614: } 5615: if ($deleted) { 5616: &Reply($client, "ok\n", $userinput); 5617: } else { 5618: &Failure( $client, "error: ".($!+0)."Unlinking cookie file Failed ". 5619: "while attempting delbalcookie\n", $userinput); 5620: } 5621: return 1; 5622: } 5623: &register_handler("delbalcookie", \&del_balcookie_handler, 0, 1, 0); 5624: 5625: # 5626: # Processes the setannounce command. This command 5627: # creates a file named announce.txt in the top directory of 5628: # the documentn root and sets its contents. The announce.txt file is 5629: # printed in its entirety at the LonCAPA login page. Note: 5630: # once the announcement.txt fileis created it cannot be deleted. 5631: # However, setting the contents of the file to empty removes the 5632: # announcement from the login page of loncapa so who cares. 5633: # 5634: # Parameters: 5635: # $cmd - The command that got us dispatched. 5636: # $announcement - The text of the announcement. 5637: # $client - Socket open on the client process. 5638: # Retunrns: 5639: # 1 - Indicating request processing should continue 5640: # Side Effects: 5641: # The file {DocRoot}/announcement.txt is created. 5642: # A reply is sent to $client. 5643: # 5644: sub set_announce_handler { 5645: my ($cmd, $announcement, $client) = @_; 5646: 5647: my $userinput = "$cmd:$announcement"; 5648: 5649: chomp($announcement); 5650: $announcement=&unescape($announcement); 5651: if (my $store=IO::File->new('>'.$perlvar{'lonDocRoot'}. 5652: '/announcement.txt')) { 5653: print $store $announcement; 5654: close $store; 5655: &Reply($client, "ok\n", $userinput); 5656: } else { 5657: &Failure($client, "error: ".($!+0)."\n", $userinput); 5658: } 5659: 5660: return 1; 5661: } 5662: &register_handler("setannounce", \&set_announce_handler, 0, 1, 0); 5663: 5664: # 5665: # Return the version of the daemon. This can be used to determine 5666: # the compatibility of cross version installations or, alternatively to 5667: # simply know who's out of date and who isn't. Note that the version 5668: # is returned concatenated with the tail. 5669: # Parameters: 5670: # $cmd - the request that dispatched to us. 5671: # $tail - Tail of the request (client's version?). 5672: # $client - Socket open on the client. 5673: #Returns: 5674: # 1 - continue processing requests. 5675: # Side Effects: 5676: # Replies with version to $client. 5677: sub get_version_handler { 5678: my ($cmd, $tail, $client) = @_; 5679: 5680: my $userinput = $cmd.$tail; 5681: 5682: &Reply($client, &version($userinput)."\n", $userinput); 5683: 5684: 5685: return 1; 5686: } 5687: &register_handler("version", \&get_version_handler, 0, 1, 0); 5688: 5689: # Set the current host and domain. This is used to support 5690: # multihomed systems. Each IP of the system, or even separate daemons 5691: # on the same IP can be treated as handling a separate lonCAPA virtual 5692: # machine. This command selects the virtual lonCAPA. The client always 5693: # knows the right one since it is lonc and it is selecting the domain/system 5694: # from the hosts.tab file. 5695: # Parameters: 5696: # $cmd - Command that dispatched us. 5697: # $tail - Tail of the command (domain/host requested). 5698: # $socket - Socket open on the client. 5699: # 5700: # Returns: 5701: # 1 - Indicates the program should continue to process requests. 5702: # Side-effects: 5703: # The default domain/system context is modified for this daemon. 5704: # a reply is sent to the client. 5705: # 5706: sub set_virtual_host_handler { 5707: my ($cmd, $tail, $socket) = @_; 5708: 5709: my $userinput ="$cmd:$tail"; 5710: 5711: &Reply($client, &sethost($userinput)."\n", $userinput); 5712: 5713: 5714: return 1; 5715: } 5716: &register_handler("sethost", \&set_virtual_host_handler, 0, 1, 0); 5717: 5718: # Process a request to exit: 5719: # - "bye" is sent to the client. 5720: # - The client socket is shutdown and closed. 5721: # - We indicate to the caller that we should exit. 5722: # Formal Parameters: 5723: # $cmd - The command that got us here. 5724: # $tail - Tail of the command (empty). 5725: # $client - Socket open on the tail. 5726: # Returns: 5727: # 0 - Indicating the program should exit!! 5728: # 5729: sub exit_handler { 5730: my ($cmd, $tail, $client) = @_; 5731: 5732: my $userinput = "$cmd:$tail"; 5733: 5734: &logthis("Client $clientip ($clientname) hanging up: $userinput"); 5735: &Reply($client, "bye\n", $userinput); 5736: $client->shutdown(2); # shutdown the socket forcibly. 5737: $client->close(); 5738: 5739: return 0; 5740: } 5741: &register_handler("exit", \&exit_handler, 0,1,1); 5742: &register_handler("init", \&exit_handler, 0,1,1); 5743: &register_handler("quit", \&exit_handler, 0,1,1); 5744: 5745: # Determine if auto-enrollment is enabled. 5746: # Note that the original had what I believe to be a defect. 5747: # The original returned 0 if the requestor was not a registerd client. 5748: # It should return "refused". 5749: # Formal Parameters: 5750: # $cmd - The command that invoked us. 5751: # $tail - The tail of the command (Extra command parameters. 5752: # $client - The socket open on the client that issued the request. 5753: # Returns: 5754: # 1 - Indicating processing should continue. 5755: # 5756: sub enrollment_enabled_handler { 5757: my ($cmd, $tail, $client) = @_; 5758: my $userinput = $cmd.":".$tail; # For logging purposes. 5759: 5760: 5761: my ($cdom) = split(/:/, $tail, 2); # Domain we're asking about. 5762: 5763: my $outcome = &localenroll::run($cdom); 5764: &Reply($client, \$outcome, $userinput); 5765: 5766: return 1; 5767: } 5768: &register_handler("autorun", \&enrollment_enabled_handler, 0, 1, 0); 5769: 5770: # 5771: # Validate an institutional code used for a LON-CAPA course. 5772: # 5773: # Formal Parameters: 5774: # $cmd - The command request that got us dispatched. 5775: # $tail - The tail of the command. In this case, 5776: # this is a colon separated set of words that will be split 5777: # into: 5778: # $dom - The domain for which the check of 5779: # institutional course code will occur. 5780: # 5781: # $instcode - The institutional code for the course 5782: # being requested, or validated for rights 5783: # to request. 5784: # 5785: # $owner - The course requestor (who will be the 5786: # course owner, in the form username:domain 5787: # 5788: # $client - Socket open on the client. 5789: # Returns: 5790: # 1 - Indicating processing should continue. 5791: # 5792: sub validate_instcode_handler { 5793: my ($cmd, $tail, $client) = @_; 5794: my $userinput = "$cmd:$tail"; 5795: my ($dom,$instcode,$owner) = split(/:/, $tail); 5796: $instcode = &unescape($instcode); 5797: $owner = &unescape($owner); 5798: my ($outcome,$description,$credits) = 5799: &localenroll::validate_instcode($dom,$instcode,$owner); 5800: my $result = &escape($outcome).'&'.&escape($description).'&'. 5801: &escape($credits); 5802: &Reply($client, \$result, $userinput); 5803: 5804: return 1; 5805: } 5806: &register_handler("autovalidateinstcode", \&validate_instcode_handler, 0, 1, 0); 5807: 5808: # 5809: # Validate co-owner for cross-listed institutional code and 5810: # institutional course code itself used for a LON-CAPA course. 5811: # 5812: # Formal Parameters: 5813: # $cmd - The command request that got us dispatched. 5814: # $tail - The tail of the command. In this case, 5815: # this is a colon separated string containing: 5816: # $dom - Course's LON-CAPA domain 5817: # $instcode - Institutional course code for the course 5818: # $inst_xlist - Institutional course Id for the crosslisting 5819: # $coowner - Username of co-owner 5820: # (values for all but $dom have been escaped). 5821: # 5822: # $client - Socket open on the client. 5823: # Returns: 5824: # 1 - Indicating processing should continue. 5825: # 5826: sub validate_instcrosslist_handler { 5827: my ($cmd, $tail, $client) = @_; 5828: my $userinput = "$cmd:$tail"; 5829: my ($dom,$instcode,$inst_xlist,$coowner) = split(/:/,$tail); 5830: $instcode = &unescape($instcode); 5831: $inst_xlist = &unescape($inst_xlist); 5832: $coowner = &unescape($coowner); 5833: my $outcome = &localenroll::validate_crosslist_access($dom,$instcode, 5834: $inst_xlist,$coowner); 5835: &Reply($client, \$outcome, $userinput); 5836: 5837: return 1; 5838: } 5839: &register_handler("autovalidateinstcrosslist", \&validate_instcrosslist_handler, 0, 1, 0); 5840: 5841: # Get the official sections for which auto-enrollment is possible. 5842: # Since the admin people won't know about 'unofficial sections' 5843: # we cannot auto-enroll on them. 5844: # Formal Parameters: 5845: # $cmd - The command request that got us dispatched here. 5846: # $tail - The remainder of the request. In our case this 5847: # will be split into: 5848: # $coursecode - The course name from the admin point of view. 5849: # $cdom - The course's domain(?). 5850: # $client - Socket open on the client. 5851: # Returns: 5852: # 1 - Indiciting processing should continue. 5853: # 5854: sub get_sections_handler { 5855: my ($cmd, $tail, $client) = @_; 5856: my $userinput = "$cmd:$tail"; 5857: 5858: my ($coursecode, $cdom) = split(/:/, $tail); 5859: my @secs = &localenroll::get_sections($coursecode,$cdom); 5860: my $seclist = &escape(join(':',@secs)); 5861: 5862: &Reply($client, \$seclist, $userinput); 5863: 5864: 5865: return 1; 5866: } 5867: &register_handler("autogetsections", \&get_sections_handler, 0, 1, 0); 5868: 5869: # Validate the owner of a new course section. 5870: # 5871: # Formal Parameters: 5872: # $cmd - Command that got us dispatched. 5873: # $tail - the remainder of the command. For us this consists of a 5874: # colon separated string containing: 5875: # $inst - Course Id from the institutions point of view. 5876: # $owner - Proposed owner of the course. 5877: # $cdom - Domain of the course (from the institutions 5878: # point of view?).. 5879: # $client - Socket open on the client. 5880: # 5881: # Returns: 5882: # 1 - Processing should continue. 5883: # 5884: sub validate_course_owner_handler { 5885: my ($cmd, $tail, $client) = @_; 5886: my $userinput = "$cmd:$tail"; 5887: my ($inst_course_id, $owner, $cdom, $coowners) = split(/:/, $tail); 5888: 5889: $owner = &unescape($owner); 5890: $coowners = &unescape($coowners); 5891: my $outcome = &localenroll::new_course($inst_course_id,$owner,$cdom,$coowners); 5892: &Reply($client, \$outcome, $userinput); 5893: 5894: 5895: 5896: return 1; 5897: } 5898: &register_handler("autonewcourse", \&validate_course_owner_handler, 0, 1, 0); 5899: 5900: # 5901: # Validate a course section in the official schedule of classes 5902: # from the institutions point of view (part of autoenrollment). 5903: # 5904: # Formal Parameters: 5905: # $cmd - The command request that got us dispatched. 5906: # $tail - The tail of the command. In this case, 5907: # this is a colon separated set of words that will be split 5908: # into: 5909: # $inst_course_id - The course/section id from the 5910: # institutions point of view. 5911: # $cdom - The domain from the institutions 5912: # point of view. 5913: # $client - Socket open on the client. 5914: # Returns: 5915: # 1 - Indicating processing should continue. 5916: # 5917: sub validate_course_section_handler { 5918: my ($cmd, $tail, $client) = @_; 5919: my $userinput = "$cmd:$tail"; 5920: my ($inst_course_id, $cdom) = split(/:/, $tail); 5921: 5922: my $outcome=&localenroll::validate_courseID($inst_course_id,$cdom); 5923: &Reply($client, \$outcome, $userinput); 5924: 5925: 5926: return 1; 5927: } 5928: &register_handler("autovalidatecourse", \&validate_course_section_handler, 0, 1, 0); 5929: 5930: # 5931: # Validate course owner's access to enrollment data for specific class section. 5932: # 5933: # 5934: # Formal Parameters: 5935: # $cmd - The command request that got us dispatched. 5936: # $tail - The tail of the command. In this case this is a colon separated 5937: # set of values that will be split into: 5938: # $inst_class - Institutional code for the specific class section 5939: # $ownerlist - An escaped comma-separated list of username:domain 5940: # of the course owner, and co-owner(s). 5941: # $cdom - The domain of the course from the institution's 5942: # point of view. 5943: # $client - The socket open on the client. 5944: # Returns: 5945: # 1 - continue processing. 5946: # 5947: 5948: sub validate_class_access_handler { 5949: my ($cmd, $tail, $client) = @_; 5950: my $userinput = "$cmd:$tail"; 5951: my ($inst_class,$ownerlist,$cdom) = split(/:/, $tail); 5952: my $owners = &unescape($ownerlist); 5953: my $outcome; 5954: eval { 5955: local($SIG{__DIE__})='DEFAULT'; 5956: $outcome=&localenroll::check_section($inst_class,$owners,$cdom); 5957: }; 5958: &Reply($client,\$outcome, $userinput); 5959: 5960: return 1; 5961: } 5962: &register_handler("autovalidateclass_sec", \&validate_class_access_handler, 0, 1, 0); 5963: 5964: # 5965: # Modify institutional sections (using customized &instsec_reformat() 5966: # routine in localenroll.pm), to either clutter or declutter, for 5967: # purposes of ensuring an institutional course section (string) can 5968: # be unambiguously separated into institutional course and section. 5969: # 5970: # Formal Parameters: 5971: # $cmd - The command request that got us dispatched. 5972: # $tail - The tail of the command. In this case this is a colon separated 5973: # set of values that will be split into: 5974: # $cdom - The LON-CAPA domain of the course. 5975: # $action - Either: clutter or declutter 5976: # clutter adds character(s) to eliminate ambiguity 5977: # declutter removes the added characters (e.g., for 5978: # display of the institutional course section string. 5979: # $info - A frozen hash in which keys are: 5980: # LON-CAPA course number:Institutional course code 5981: # and values are a reference to an array of the 5982: # items to modify -- either institutional sections, 5983: # or institutional course sections (for crosslistings). 5984: # $client - The socket open on the client. 5985: # Returns: 5986: # 1 - continue processing. 5987: # 5988: 5989: sub instsec_reformat_handler { 5990: my ($cmd, $tail, $client) = @_; 5991: my $userinput = "$cmd:$tail"; 5992: my ($cdom,$action,$info) = split(/:/,$tail); 5993: my $instsecref = &Apache::lonnet::thaw_unescape($info); 5994: my ($outcome,$result); 5995: eval { 5996: local($SIG{__DIE__})='DEFAULT'; 5997: $outcome=&localenroll::instsec_reformat($cdom,$action,$instsecref); 5998: if ($outcome eq 'ok') { 5999: if (ref($instsecref) eq 'HASH') { 6000: foreach my $key (keys(%{$instsecref})) { 6001: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($instsecref->{$key}).'&'; 6002: } 6003: $result =~ s/\&$//; 6004: } 6005: } 6006: }; 6007: if (!$@) { 6008: if ($outcome eq 'ok') { 6009: &Reply( $client, \$result, $userinput); 6010: } else { 6011: &Reply($client,\$outcome, $userinput); 6012: } 6013: } else { 6014: &Failure($client,"unknown_cmd\n",$userinput); 6015: } 6016: return 1; 6017: } 6018: &register_handler("autoinstsecreformat",\&instsec_reformat_handler, 0, 1, 0); 6019: 6020: # 6021: # Validate course owner or co-owners(s) access to enrollment data for all sections 6022: # and crosslistings for a particular course. 6023: # 6024: # 6025: # Formal Parameters: 6026: # $cmd - The command request that got us dispatched. 6027: # $tail - The tail of the command. In this case this is a colon separated 6028: # set of values that will be split into: 6029: # $ownerlist - An escaped comma-separated list of username:domain 6030: # of the course owner, and co-owner(s). 6031: # $cdom - The domain of the course from the institution's 6032: # point of view. 6033: # $classes - Frozen hash of institutional course sections and 6034: # crosslistings. 6035: # $client - The socket open on the client. 6036: # Returns: 6037: # 1 - continue processing. 6038: # 6039: 6040: sub validate_classes_handler { 6041: my ($cmd, $tail, $client) = @_; 6042: my $userinput = "$cmd:$tail"; 6043: my ($ownerlist,$cdom,$classes) = split(/:/, $tail); 6044: my $classesref = &Apache::lonnet::thaw_unescape($classes); 6045: my $owners = &unescape($ownerlist); 6046: my $result; 6047: eval { 6048: local($SIG{__DIE__})='DEFAULT'; 6049: my %validations; 6050: my $response = &localenroll::check_instclasses($owners,$cdom,$classesref, 6051: \%validations); 6052: if ($response eq 'ok') { 6053: foreach my $key (keys(%validations)) { 6054: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($validations{$key}).'&'; 6055: } 6056: $result =~ s/\&$//; 6057: } else { 6058: $result = 'error'; 6059: } 6060: }; 6061: if (!$@) { 6062: &Reply($client, \$result, $userinput); 6063: } else { 6064: &Failure($client,"unknown_cmd\n",$userinput); 6065: } 6066: return 1; 6067: } 6068: &register_handler("autovalidateinstclasses", \&validate_classes_handler, 0, 1, 0); 6069: 6070: # 6071: # Create a password for a new LON-CAPA user added by auto-enrollment. 6072: # Only used for case where authentication method for new user is localauth 6073: # 6074: # Formal Parameters: 6075: # $cmd - The command request that got us dispatched. 6076: # $tail - The tail of the command. In this case this is a colon separated 6077: # set of words that will be split into: 6078: # $authparam - An authentication parameter (localauth parameter). 6079: # $cdom - The domain of the course from the institution's 6080: # point of view. 6081: # $client - The socket open on the client. 6082: # Returns: 6083: # 1 - continue processing. 6084: # 6085: sub create_auto_enroll_password_handler { 6086: my ($cmd, $tail, $client) = @_; 6087: my $userinput = "$cmd:$tail"; 6088: 6089: my ($authparam, $cdom) = split(/:/, $userinput); 6090: 6091: my ($create_passwd,$authchk); 6092: ($authparam, 6093: $create_passwd, 6094: $authchk) = &localenroll::create_password($authparam,$cdom); 6095: 6096: &Reply($client, &escape($authparam.':'.$create_passwd.':'.$authchk)."\n", 6097: $userinput); 6098: 6099: 6100: return 1; 6101: } 6102: &register_handler("autocreatepassword", \&create_auto_enroll_password_handler, 6103: 0, 1, 0); 6104: 6105: sub auto_export_grades_handler { 6106: my ($cmd, $tail, $client) = @_; 6107: my $userinput = "$cmd:$tail"; 6108: my ($cdom,$cnum,$info,$data) = split(/:/,$tail); 6109: my $inforef = &Apache::lonnet::thaw_unescape($info); 6110: my $dataref = &Apache::lonnet::thaw_unescape($data); 6111: my ($outcome,$result);; 6112: eval { 6113: local($SIG{__DIE__})='DEFAULT'; 6114: my %rtnhash; 6115: $outcome=&localenroll::export_grades($cdom,$cnum,$inforef,$dataref,\%rtnhash); 6116: if ($outcome eq 'ok') { 6117: foreach my $key (keys(%rtnhash)) { 6118: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rtnhash{$key}).'&'; 6119: } 6120: $result =~ s/\&$//; 6121: } 6122: }; 6123: if (!$@) { 6124: if ($outcome eq 'ok') { 6125: if ($cipher) { 6126: my $cmdlength=length($result); 6127: $result.=" "; 6128: my $encresult=''; 6129: for (my $encidx=0;$encidx<=$cmdlength;$encidx+=8) { 6130: $encresult.= unpack("H16", 6131: $cipher->encrypt(substr($result, 6132: $encidx, 6133: 8))); 6134: } 6135: &Reply( $client, "enc:$cmdlength:$encresult\n", $userinput); 6136: } else { 6137: &Failure( $client, "error:no_key\n", $userinput); 6138: } 6139: } else { 6140: &Reply($client, "$outcome\n", $userinput); 6141: } 6142: } else { 6143: &Failure($client,"export_error\n",$userinput); 6144: } 6145: return 1; 6146: } 6147: &register_handler("autoexportgrades", \&auto_export_grades_handler, 6148: 1, 1, 0); 6149: 6150: 6151: # Retrieve and remove temporary files created by/during autoenrollment. 6152: # 6153: # Formal Parameters: 6154: # $cmd - The command that got us dispatched. 6155: # $tail - The tail of the command. In our case this is a colon 6156: # separated list that will be split into: 6157: # $filename - The name of the file to retrieve. 6158: # The filename is given as a path relative to 6159: # the LonCAPA temp file directory. 6160: # $client - Socket open on the client. 6161: # 6162: # Returns: 6163: # 1 - Continue processing. 6164: sub retrieve_auto_file_handler { 6165: my ($cmd, $tail, $client) = @_; 6166: my $userinput = "cmd:$tail"; 6167: 6168: my ($filename) = split(/:/, $tail); 6169: 6170: my $source = $perlvar{'lonDaemons'}.'/tmp/'.$filename; 6171: if ($filename =~m{/\.\./}) { 6172: &Failure($client, "refused\n", $userinput); 6173: } elsif ($filename !~ /^$LONCAPA::match_domain\_$LONCAPA::match_courseid\_.+_classlist\.xml$/) { 6174: &Failure($client, "refused\n", $userinput); 6175: } elsif ( (-e $source) && ($filename ne '') ) { 6176: my $reply = ''; 6177: if (open(my $fh,$source)) { 6178: while (<$fh>) { 6179: chomp($_); 6180: $_ =~ s/^\s+//g; 6181: $_ =~ s/\s+$//g; 6182: $reply .= $_; 6183: } 6184: close($fh); 6185: &Reply($client, &escape($reply)."\n", $userinput); 6186: 6187: # Does this have to be uncommented??!? (RF). 6188: # 6189: # unlink($source); 6190: } else { 6191: &Failure($client, "error\n", $userinput); 6192: } 6193: } else { 6194: &Failure($client, "error\n", $userinput); 6195: } 6196: 6197: 6198: return 1; 6199: } 6200: &register_handler("autoretrieve", \&retrieve_auto_file_handler, 0,1,0); 6201: 6202: sub crsreq_checks_handler { 6203: my ($cmd, $tail, $client) = @_; 6204: my $userinput = "$cmd:$tail"; 6205: my $dom = $tail; 6206: my $result; 6207: my @reqtypes = ('official','unofficial','community','textbook'); 6208: eval { 6209: local($SIG{__DIE__})='DEFAULT'; 6210: my %validations; 6211: my $response = &localenroll::crsreq_checks($dom,\@reqtypes, 6212: \%validations); 6213: if ($response eq 'ok') { 6214: foreach my $key (keys(%validations)) { 6215: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($validations{$key}).'&'; 6216: } 6217: $result =~ s/\&$//; 6218: } else { 6219: $result = 'error'; 6220: } 6221: }; 6222: if (!$@) { 6223: &Reply($client, \$result, $userinput); 6224: } else { 6225: &Failure($client,"unknown_cmd\n",$userinput); 6226: } 6227: return 1; 6228: } 6229: &register_handler("autocrsreqchecks", \&crsreq_checks_handler, 0, 1, 0); 6230: 6231: sub validate_crsreq_handler { 6232: my ($cmd, $tail, $client) = @_; 6233: my $userinput = "$cmd:$tail"; 6234: my ($dom,$owner,$crstype,$inststatuslist,$instcode,$instseclist,$customdata) = split(/:/, $tail); 6235: $instcode = &unescape($instcode); 6236: $owner = &unescape($owner); 6237: $crstype = &unescape($crstype); 6238: $inststatuslist = &unescape($inststatuslist); 6239: $instcode = &unescape($instcode); 6240: $instseclist = &unescape($instseclist); 6241: my $custominfo = &Apache::lonnet::thaw_unescape($customdata); 6242: my $outcome; 6243: eval { 6244: local($SIG{__DIE__})='DEFAULT'; 6245: $outcome = &localenroll::validate_crsreq($dom,$owner,$crstype, 6246: $inststatuslist,$instcode, 6247: $instseclist,$custominfo); 6248: }; 6249: if (!$@) { 6250: &Reply($client, \$outcome, $userinput); 6251: } else { 6252: &Failure($client,"unknown_cmd\n",$userinput); 6253: } 6254: return 1; 6255: } 6256: &register_handler("autocrsreqvalidation", \&validate_crsreq_handler, 0, 1, 0); 6257: 6258: sub crsreq_update_handler { 6259: my ($cmd, $tail, $client) = @_; 6260: my $userinput = "$cmd:$tail"; 6261: my ($cdom,$cnum,$crstype,$action,$ownername,$ownerdomain,$fullname,$title,$code, 6262: $accessstart,$accessend,$infohashref) = 6263: split(/:/, $tail); 6264: $crstype = &unescape($crstype); 6265: $action = &unescape($action); 6266: $ownername = &unescape($ownername); 6267: $ownerdomain = &unescape($ownerdomain); 6268: $fullname = &unescape($fullname); 6269: $title = &unescape($title); 6270: $code = &unescape($code); 6271: $accessstart = &unescape($accessstart); 6272: $accessend = &unescape($accessend); 6273: my $incoming = &Apache::lonnet::thaw_unescape($infohashref); 6274: my ($result,$outcome); 6275: eval { 6276: local($SIG{__DIE__})='DEFAULT'; 6277: my %rtnhash; 6278: $outcome = &localenroll::crsreq_updates($cdom,$cnum,$crstype,$action, 6279: $ownername,$ownerdomain,$fullname, 6280: $title,$code,$accessstart,$accessend, 6281: $incoming,\%rtnhash); 6282: if ($outcome eq 'ok') { 6283: my @posskeys = qw(createdweb createdmsg createdcustomized createdactions queuedweb queuedmsg formitems reviewweb validationjs onload javascript); 6284: foreach my $key (keys(%rtnhash)) { 6285: if (grep(/^\Q$key\E/,@posskeys)) { 6286: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rtnhash{$key}).'&'; 6287: } 6288: } 6289: $result =~ s/\&$//; 6290: } 6291: }; 6292: if (!$@) { 6293: if ($outcome eq 'ok') { 6294: &Reply($client, \$result, $userinput); 6295: } else { 6296: &Reply($client, "format_error\n", $userinput); 6297: } 6298: } else { 6299: &Failure($client,"unknown_cmd\n",$userinput); 6300: } 6301: return 1; 6302: } 6303: &register_handler("autocrsrequpdate", \&crsreq_update_handler, 0, 1, 0); 6304: 6305: # 6306: # Read and retrieve institutional code format (for support form). 6307: # Formal Parameters: 6308: # $cmd - Command that dispatched us. 6309: # $tail - Tail of the command. In this case it conatins 6310: # the course domain and the coursename. 6311: # $client - Socket open on the client. 6312: # Returns: 6313: # 1 - Continue processing. 6314: # 6315: sub get_institutional_code_format_handler { 6316: my ($cmd, $tail, $client) = @_; 6317: my $userinput = "$cmd:$tail"; 6318: 6319: my $reply; 6320: my($cdom,$course) = split(/:/,$tail); 6321: my @pairs = split/\&/,$course; 6322: my %instcodes = (); 6323: my %codes = (); 6324: my @codetitles = (); 6325: my %cat_titles = (); 6326: my %cat_order = (); 6327: foreach (@pairs) { 6328: my ($key,$value) = split/=/,$_; 6329: $instcodes{&unescape($key)} = &unescape($value); 6330: } 6331: my $formatreply = &localenroll::instcode_format($cdom, 6332: \%instcodes, 6333: \%codes, 6334: \@codetitles, 6335: \%cat_titles, 6336: \%cat_order); 6337: if ($formatreply eq 'ok') { 6338: my $codes_str = &Apache::lonnet::hash2str(%codes); 6339: my $codetitles_str = &Apache::lonnet::array2str(@codetitles); 6340: my $cat_titles_str = &Apache::lonnet::hash2str(%cat_titles); 6341: my $cat_order_str = &Apache::lonnet::hash2str(%cat_order); 6342: &Reply($client, 6343: $codes_str.':'.$codetitles_str.':'.$cat_titles_str.':' 6344: .$cat_order_str."\n", 6345: $userinput); 6346: } else { 6347: # this else branch added by RF since if not ok, lonc will 6348: # hang waiting on reply until timeout. 6349: # 6350: &Reply($client, "format_error\n", $userinput); 6351: } 6352: 6353: return 1; 6354: } 6355: &register_handler("autoinstcodeformat", 6356: \&get_institutional_code_format_handler,0,1,0); 6357: 6358: sub get_institutional_defaults_handler { 6359: my ($cmd, $tail, $client) = @_; 6360: my $userinput = "$cmd:$tail"; 6361: 6362: my $dom = $tail; 6363: my %defaults_hash; 6364: my @code_order; 6365: my $outcome; 6366: eval { 6367: local($SIG{__DIE__})='DEFAULT'; 6368: $outcome = &localenroll::instcode_defaults($dom,\%defaults_hash, 6369: \@code_order); 6370: }; 6371: if (!$@) { 6372: if ($outcome eq 'ok') { 6373: my $result=''; 6374: while (my ($key,$value) = each(%defaults_hash)) { 6375: $result.=&escape($key).'='.&escape($value).'&'; 6376: } 6377: $result .= 'code_order='.&escape(join('&',@code_order)); 6378: &Reply($client,\$result,$userinput); 6379: } else { 6380: &Reply($client,"error\n", $userinput); 6381: } 6382: } else { 6383: &Failure($client,"unknown_cmd\n",$userinput); 6384: } 6385: } 6386: &register_handler("autoinstcodedefaults", 6387: \&get_institutional_defaults_handler,0,1,0); 6388: 6389: sub get_possible_instcodes_handler { 6390: my ($cmd, $tail, $client) = @_; 6391: my $userinput = "$cmd:$tail"; 6392: 6393: my $reply; 6394: my $cdom = $tail; 6395: my (@codetitles,%cat_titles,%cat_order,@code_order); 6396: my $formatreply = &localenroll::possible_instcodes($cdom, 6397: \@codetitles, 6398: \%cat_titles, 6399: \%cat_order, 6400: \@code_order); 6401: if ($formatreply eq 'ok') { 6402: my $result = join('&',map {&escape($_);} (@codetitles)).':'; 6403: $result .= join('&',map {&escape($_);} (@code_order)).':'; 6404: foreach my $key (keys(%cat_titles)) { 6405: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_titles{$key}).'&'; 6406: } 6407: $result =~ s/\&$//; 6408: $result .= ':'; 6409: foreach my $key (keys(%cat_order)) { 6410: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($cat_order{$key}).'&'; 6411: } 6412: $result =~ s/\&$//; 6413: &Reply($client,\$result,$userinput); 6414: } else { 6415: &Reply($client, "format_error\n", $userinput); 6416: } 6417: return 1; 6418: } 6419: &register_handler("autopossibleinstcodes", 6420: \&get_possible_instcodes_handler,0,1,0); 6421: 6422: sub get_institutional_user_rules { 6423: my ($cmd, $tail, $client) = @_; 6424: my $userinput = "$cmd:$tail"; 6425: my $dom = &unescape($tail); 6426: my (%rules_hash,@rules_order); 6427: my $outcome; 6428: eval { 6429: local($SIG{__DIE__})='DEFAULT'; 6430: $outcome = &localenroll::username_rules($dom,\%rules_hash,\@rules_order); 6431: }; 6432: if (!$@) { 6433: if ($outcome eq 'ok') { 6434: my $result; 6435: foreach my $key (keys(%rules_hash)) { 6436: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&'; 6437: } 6438: $result =~ s/\&$//; 6439: $result .= ':'; 6440: if (@rules_order > 0) { 6441: foreach my $item (@rules_order) { 6442: $result .= &escape($item).'&'; 6443: } 6444: } 6445: $result =~ s/\&$//; 6446: &Reply($client,\$result,$userinput); 6447: } else { 6448: &Reply($client,"error\n", $userinput); 6449: } 6450: } else { 6451: &Failure($client,"unknown_cmd\n",$userinput); 6452: } 6453: } 6454: &register_handler("instuserrules",\&get_institutional_user_rules,0,1,0); 6455: 6456: sub get_institutional_id_rules { 6457: my ($cmd, $tail, $client) = @_; 6458: my $userinput = "$cmd:$tail"; 6459: my $dom = &unescape($tail); 6460: my (%rules_hash,@rules_order); 6461: my $outcome; 6462: eval { 6463: local($SIG{__DIE__})='DEFAULT'; 6464: $outcome = &localenroll::id_rules($dom,\%rules_hash,\@rules_order); 6465: }; 6466: if (!$@) { 6467: if ($outcome eq 'ok') { 6468: my $result; 6469: foreach my $key (keys(%rules_hash)) { 6470: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&'; 6471: } 6472: $result =~ s/\&$//; 6473: $result .= ':'; 6474: if (@rules_order > 0) { 6475: foreach my $item (@rules_order) { 6476: $result .= &escape($item).'&'; 6477: } 6478: } 6479: $result =~ s/\&$//; 6480: &Reply($client,\$result,$userinput); 6481: } else { 6482: &Reply($client,"error\n", $userinput); 6483: } 6484: } else { 6485: &Failure($client,"unknown_cmd\n",$userinput); 6486: } 6487: } 6488: &register_handler("instidrules",\&get_institutional_id_rules,0,1,0); 6489: 6490: sub get_institutional_selfcreate_rules { 6491: my ($cmd, $tail, $client) = @_; 6492: my $userinput = "$cmd:$tail"; 6493: my $dom = &unescape($tail); 6494: my (%rules_hash,@rules_order); 6495: my $outcome; 6496: eval { 6497: local($SIG{__DIE__})='DEFAULT'; 6498: $outcome = &localenroll::selfcreate_rules($dom,\%rules_hash,\@rules_order); 6499: }; 6500: if (!$@) { 6501: if ($outcome eq 'ok') { 6502: my $result; 6503: foreach my $key (keys(%rules_hash)) { 6504: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&'; 6505: } 6506: $result =~ s/\&$//; 6507: $result .= ':'; 6508: if (@rules_order > 0) { 6509: foreach my $item (@rules_order) { 6510: $result .= &escape($item).'&'; 6511: } 6512: } 6513: $result =~ s/\&$//; 6514: &Reply($client,\$result,$userinput); 6515: } else { 6516: &Reply($client,"error\n", $userinput); 6517: } 6518: } else { 6519: &Failure($client,"unknown_cmd\n",$userinput); 6520: } 6521: } 6522: &register_handler("instemailrules",\&get_institutional_selfcreate_rules,0,1,0); 6523: 6524: sub get_unamemap_rules { 6525: my ($cmd, $tail, $client) = @_; 6526: my $userinput = "$cmd:$tail"; 6527: my $dom = &unescape($tail); 6528: my (%rules_hash,@rules_order); 6529: my $outcome; 6530: eval { 6531: local($SIG{__DIE__})='DEFAULT'; 6532: $outcome = &localenroll::unamemap_rules($dom,\%rules_hash,\@rules_order); 6533: }; 6534: if (!$@) { 6535: if ($outcome eq 'ok') { 6536: my $result; 6537: foreach my $key (keys(%rules_hash)) { 6538: $result .= &escape($key).'='.&Apache::lonnet::freeze_escape($rules_hash{$key}).'&'; 6539: } 6540: $result =~ s/\&$//; 6541: $result .= ':'; 6542: if (@rules_order > 0) { 6543: foreach my $item (@rules_order) { 6544: $result .= &escape($item).'&'; 6545: } 6546: } 6547: $result =~ s/\&$//; 6548: &Reply($client,\$result,$userinput); 6549: } else { 6550: &Reply($client,"error\n", $userinput); 6551: } 6552: } else { 6553: &Failure($client,"unknown_cmd\n",$userinput); 6554: } 6555: } 6556: &register_handler("unamemaprules",\&get_unamemap_rules,0,1,0); 6557: 6558: sub institutional_username_check { 6559: my ($cmd, $tail, $client) = @_; 6560: my $userinput = "$cmd:$tail"; 6561: my %rulecheck; 6562: my $outcome; 6563: my ($udom,$uname,@rules) = split(/:/,$tail); 6564: $udom = &unescape($udom); 6565: $uname = &unescape($uname); 6566: @rules = map {&unescape($_);} (@rules); 6567: eval { 6568: local($SIG{__DIE__})='DEFAULT'; 6569: $outcome = &localenroll::username_check($udom,$uname,\@rules,\%rulecheck); 6570: }; 6571: if (!$@) { 6572: if ($outcome eq 'ok') { 6573: my $result=''; 6574: foreach my $key (keys(%rulecheck)) { 6575: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&'; 6576: } 6577: &Reply($client,\$result,$userinput); 6578: } else { 6579: &Reply($client,"error\n", $userinput); 6580: } 6581: } else { 6582: &Failure($client,"unknown_cmd\n",$userinput); 6583: } 6584: } 6585: &register_handler("instrulecheck",\&institutional_username_check,0,1,0); 6586: 6587: sub institutional_id_check { 6588: my ($cmd, $tail, $client) = @_; 6589: my $userinput = "$cmd:$tail"; 6590: my %rulecheck; 6591: my $outcome; 6592: my ($udom,$id,@rules) = split(/:/,$tail); 6593: $udom = &unescape($udom); 6594: $id = &unescape($id); 6595: @rules = map {&unescape($_);} (@rules); 6596: eval { 6597: local($SIG{__DIE__})='DEFAULT'; 6598: $outcome = &localenroll::id_check($udom,$id,\@rules,\%rulecheck); 6599: }; 6600: if (!$@) { 6601: if ($outcome eq 'ok') { 6602: my $result=''; 6603: foreach my $key (keys(%rulecheck)) { 6604: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&'; 6605: } 6606: &Reply($client,\$result,$userinput); 6607: } else { 6608: &Reply($client,"error\n", $userinput); 6609: } 6610: } else { 6611: &Failure($client,"unknown_cmd\n",$userinput); 6612: } 6613: } 6614: &register_handler("instidrulecheck",\&institutional_id_check,0,1,0); 6615: 6616: sub institutional_selfcreate_check { 6617: my ($cmd, $tail, $client) = @_; 6618: my $userinput = "$cmd:$tail"; 6619: my %rulecheck; 6620: my $outcome; 6621: my ($udom,$email,@rules) = split(/:/,$tail); 6622: $udom = &unescape($udom); 6623: $email = &unescape($email); 6624: @rules = map {&unescape($_);} (@rules); 6625: eval { 6626: local($SIG{__DIE__})='DEFAULT'; 6627: $outcome = &localenroll::selfcreate_check($udom,$email,\@rules,\%rulecheck); 6628: }; 6629: if (!$@) { 6630: if ($outcome eq 'ok') { 6631: my $result=''; 6632: foreach my $key (keys(%rulecheck)) { 6633: $result.=&escape($key).'='.&Apache::lonnet::freeze_escape($rulecheck{$key}).'&'; 6634: } 6635: &Reply($client,\$result,$userinput); 6636: } else { 6637: &Reply($client,"error\n", $userinput); 6638: } 6639: } else { 6640: &Failure($client,"unknown_cmd\n",$userinput); 6641: } 6642: } 6643: &register_handler("instselfcreatecheck",\&institutional_selfcreate_check,0,1,0); 6644: 6645: # Get domain specific conditions for import of student photographs to a course 6646: # 6647: # Retrieves information from photo_permission subroutine in localenroll. 6648: # Returns outcome (ok) if no processing errors, and whether course owner is 6649: # required to accept conditions of use (yes/no). 6650: # 6651: # 6652: sub photo_permission_handler { 6653: my ($cmd, $tail, $client) = @_; 6654: my $userinput = "$cmd:$tail"; 6655: my $cdom = $tail; 6656: my ($perm_reqd,$conditions); 6657: my $outcome; 6658: eval { 6659: local($SIG{__DIE__})='DEFAULT'; 6660: $outcome = &localenroll::photo_permission($cdom,\$perm_reqd, 6661: \$conditions); 6662: }; 6663: if (!$@) { 6664: &Reply($client, &escape($outcome.':'.$perm_reqd.':'. $conditions)."\n", 6665: $userinput); 6666: } else { 6667: &Failure($client,"unknown_cmd\n",$userinput); 6668: } 6669: return 1; 6670: } 6671: &register_handler("autophotopermission",\&photo_permission_handler,0,1,0); 6672: 6673: # 6674: # Checks if student photo is available for a user in the domain, in the user's 6675: # directory (in /userfiles/internal/studentphoto.jpg). 6676: # Uses localstudentphoto:fetch() to ensure there is an up to date copy of 6677: # the student's photo. 6678: 6679: sub photo_check_handler { 6680: my ($cmd, $tail, $client) = @_; 6681: my $userinput = "$cmd:$tail"; 6682: my ($udom,$uname,$pid) = split(/:/,$tail); 6683: $udom = &unescape($udom); 6684: $uname = &unescape($uname); 6685: $pid = &unescape($pid); 6686: my $path=&propath($udom,$uname).'/userfiles/internal/'; 6687: if (!-e $path) { 6688: &mkpath($path); 6689: } 6690: my $response; 6691: my $result = &localstudentphoto::fetch($udom,$uname,$pid,\$response); 6692: $result .= ':'.$response; 6693: &Reply($client, &escape($result)."\n",$userinput); 6694: return 1; 6695: } 6696: &register_handler("autophotocheck",\&photo_check_handler,0,1,0); 6697: 6698: # 6699: # Retrieve information from localenroll about whether to provide a button 6700: # for users who have enbled import of student photos to initiate an 6701: # update of photo files for registered students. Also include 6702: # comment to display alongside button. 6703: 6704: sub photo_choice_handler { 6705: my ($cmd, $tail, $client) = @_; 6706: my $userinput = "$cmd:$tail"; 6707: my $cdom = &unescape($tail); 6708: my ($update,$comment); 6709: eval { 6710: local($SIG{__DIE__})='DEFAULT'; 6711: ($update,$comment) = &localenroll::manager_photo_update($cdom); 6712: }; 6713: if (!$@) { 6714: &Reply($client,&escape($update).':'.&escape($comment)."\n",$userinput); 6715: } else { 6716: &Failure($client,"unknown_cmd\n",$userinput); 6717: } 6718: return 1; 6719: } 6720: &register_handler("autophotochoice",\&photo_choice_handler,0,1,0); 6721: 6722: # 6723: # Gets a student's photo to exist (in the correct image type) in the user's 6724: # directory. 6725: # Formal Parameters: 6726: # $cmd - The command request that got us dispatched. 6727: # $tail - A colon separated set of words that will be split into: 6728: # $domain - student's domain 6729: # $uname - student username 6730: # $type - image type desired 6731: # $client - The socket open on the client. 6732: # Returns: 6733: # 1 - continue processing. 6734: 6735: sub student_photo_handler { 6736: my ($cmd, $tail, $client) = @_; 6737: my ($domain,$uname,$ext,$type) = split(/:/, $tail); 6738: 6739: my $path=&propath($domain,$uname). '/userfiles/internal/'; 6740: my $filename = 'studentphoto.'.$ext; 6741: if ($type eq 'thumbnail') { 6742: $filename = 'studentphoto_tn.'.$ext; 6743: } 6744: if (-e $path.$filename) { 6745: &Reply($client,"ok\n","$cmd:$tail"); 6746: return 1; 6747: } 6748: &mkpath($path); 6749: my $file; 6750: if ($type eq 'thumbnail') { 6751: eval { 6752: local($SIG{__DIE__})='DEFAULT'; 6753: $file=&localstudentphoto::fetch_thumbnail($domain,$uname); 6754: }; 6755: } else { 6756: $file=&localstudentphoto::fetch($domain,$uname); 6757: } 6758: if (!$file) { 6759: &Failure($client,"unavailable\n","$cmd:$tail"); 6760: return 1; 6761: } 6762: if (!-e $path.$filename) { &convert_photo($file,$path.$filename); } 6763: if (-e $path.$filename) { 6764: &Reply($client,"ok\n","$cmd:$tail"); 6765: return 1; 6766: } 6767: &Failure($client,"unable_to_convert\n","$cmd:$tail"); 6768: return 1; 6769: } 6770: &register_handler("studentphoto", \&student_photo_handler, 0, 1, 0); 6771: 6772: sub inst_usertypes_handler { 6773: my ($cmd, $domain, $client) = @_; 6774: my $res; 6775: my $userinput = $cmd.":".$domain; # For logging purposes. 6776: my (%typeshash,@order,$result); 6777: eval { 6778: local($SIG{__DIE__})='DEFAULT'; 6779: $result=&localenroll::inst_usertypes($domain,\%typeshash,\@order); 6780: }; 6781: if ($result eq 'ok') { 6782: if (keys(%typeshash) > 0) { 6783: foreach my $key (keys(%typeshash)) { 6784: $res.=&escape($key).'='.&escape($typeshash{$key}).'&'; 6785: } 6786: } 6787: $res=~s/\&$//; 6788: $res .= ':'; 6789: if (@order > 0) { 6790: foreach my $item (@order) { 6791: $res .= &escape($item).'&'; 6792: } 6793: } 6794: $res=~s/\&$//; 6795: } 6796: &Reply($client, \$res, $userinput); 6797: return 1; 6798: } 6799: &register_handler("inst_usertypes", \&inst_usertypes_handler, 0, 1, 0); 6800: 6801: # mkpath makes all directories for a file, expects an absolute path with a 6802: # file or a trailing / if just a dir is passed 6803: # returns 1 on success 0 on failure 6804: sub mkpath { 6805: my ($file)=@_; 6806: my @parts=split(/\//,$file,-1); 6807: my $now=$parts[0].'/'.$parts[1].'/'.$parts[2]; 6808: for (my $i=3;$i<= ($#parts-1);$i++) { 6809: $now.='/'.$parts[$i]; 6810: if (!-e $now) { 6811: if (!mkdir($now,0770)) { return 0; } 6812: } 6813: } 6814: return 1; 6815: } 6816: 6817: #--------------------------------------------------------------- 6818: # 6819: # Getting, decoding and dispatching requests: 6820: # 6821: # 6822: # Get a Request: 6823: # Gets a Request message from the client. The transaction 6824: # is defined as a 'line' of text. We remove the new line 6825: # from the text line. 6826: # 6827: sub get_request { 6828: my $input = <$client>; 6829: chomp($input); 6830: 6831: &Debug("get_request: Request = $input\n"); 6832: 6833: &status('Processing '.$clientname.':'.$input); 6834: 6835: return $input; 6836: } 6837: #--------------------------------------------------------------- 6838: # 6839: # Process a request. This sub should shrink as each action 6840: # gets farmed out into a separat sub that is registered 6841: # with the dispatch hash. 6842: # 6843: # Parameters: 6844: # user_input - The request received from the client (lonc). 6845: # Returns: 6846: # true to keep processing, false if caller should exit. 6847: # 6848: sub process_request { 6849: my ($userinput) = @_; # Easier for now to break style than to 6850: # fix all the userinput -> user_input. 6851: my $wasenc = 0; # True if request was encrypted. 6852: # ------------------------------------------------------------ See if encrypted 6853: # for command 6854: # sethost:<server> 6855: # <command>:<args> 6856: # we just send it to the processor 6857: # for 6858: # sethost:<server>:<command>:<args> 6859: # we do the implict set host and then do the command 6860: if ($userinput =~ /^sethost:/) { 6861: (my $cmd,my $newid,$userinput) = split(':',$userinput,3); 6862: if (defined($userinput)) { 6863: &sethost("$cmd:$newid"); 6864: } else { 6865: $userinput = "$cmd:$newid"; 6866: } 6867: } 6868: 6869: if ($userinput =~ /^enc/) { 6870: $userinput = decipher($userinput); 6871: $wasenc=1; 6872: if(!$userinput) { # Cipher not defined. 6873: &Failure($client, "error: Encrypted data without negotated key\n"); 6874: return 0; 6875: } 6876: } 6877: Debug("process_request: $userinput\n"); 6878: 6879: # 6880: # The 'correct way' to add a command to lond is now to 6881: # write a sub to execute it and Add it to the command dispatch 6882: # hash via a call to register_handler.. The comments to that 6883: # sub should give you enough to go on to show how to do this 6884: # along with the examples that are building up as this code 6885: # is getting refactored. Until all branches of the 6886: # if/elseif monster below have been factored out into 6887: # separate procesor subs, if the dispatch hash is missing 6888: # the command keyword, we will fall through to the remainder 6889: # of the if/else chain below in order to keep this thing in 6890: # working order throughout the transmogrification. 6891: 6892: my ($command, $tail) = split(/:/, $userinput, 2); 6893: chomp($command); 6894: chomp($tail); 6895: $tail =~ s/(\r)//; # This helps people debugging with e.g. telnet. 6896: $command =~ s/(\r)//; # And this too for parameterless commands. 6897: if(!$tail) { 6898: $tail =""; # defined but blank. 6899: } 6900: 6901: &Debug("Command received: $command, encoded = $wasenc"); 6902: 6903: if(defined $Dispatcher{$command}) { 6904: 6905: my $dispatch_info = $Dispatcher{$command}; 6906: my $handler = $$dispatch_info[0]; 6907: my $need_encode = $$dispatch_info[1]; 6908: my $client_types = $$dispatch_info[2]; 6909: Debug("Matched dispatch hash: mustencode: $need_encode " 6910: ."ClientType $client_types"); 6911: 6912: # Validate the request: 6913: 6914: my $ok = 1; 6915: my $requesterprivs = 0; 6916: if(&isClient()) { 6917: $requesterprivs |= $CLIENT_OK; 6918: } 6919: if(&isManager()) { 6920: $requesterprivs |= $MANAGER_OK; 6921: } 6922: if($need_encode && (!$wasenc)) { 6923: Debug("Must encode but wasn't: $need_encode $wasenc"); 6924: $ok = 0; 6925: } 6926: if(($client_types & $requesterprivs) == 0) { 6927: Debug("Client not privileged to do this operation"); 6928: $ok = 0; 6929: } 6930: 6931: if($ok) { 6932: Debug("Dispatching to handler $command $tail"); 6933: my $keep_going = &$handler($command, $tail, $client); 6934: return $keep_going; 6935: } else { 6936: Debug("Refusing to dispatch because client did not match requirements"); 6937: Failure($client, "refused\n", $userinput); 6938: return 1; 6939: } 6940: 6941: } 6942: 6943: print $client "unknown_cmd\n"; 6944: # -------------------------------------------------------------------- complete 6945: Debug("process_request - returning 1"); 6946: return 1; 6947: } 6948: # 6949: # Decipher encoded traffic 6950: # Parameters: 6951: # input - Encoded data. 6952: # Returns: 6953: # Decoded data or undef if encryption key was not yet negotiated. 6954: # Implicit input: 6955: # cipher - This global holds the negotiated encryption key. 6956: # 6957: sub decipher { 6958: my ($input) = @_; 6959: my $output = ''; 6960: 6961: 6962: if($cipher) { 6963: my($enc, $enclength, $encinput) = split(/:/, $input); 6964: for(my $encidx = 0; $encidx < length($encinput); $encidx += 16) { 6965: $output .= 6966: $cipher->decrypt(pack("H16", substr($encinput, $encidx, 16))); 6967: } 6968: return substr($output, 0, $enclength); 6969: } else { 6970: return undef; 6971: } 6972: } 6973: 6974: # 6975: # Register a command processor. This function is invoked to register a sub 6976: # to process a request. Once registered, the ProcessRequest sub can automatically 6977: # dispatch requests to an appropriate sub, and do the top level validity checking 6978: # as well: 6979: # - Is the keyword recognized. 6980: # - Is the proper client type attempting the request. 6981: # - Is the request encrypted if it has to be. 6982: # Parameters: 6983: # $request_name - Name of the request being registered. 6984: # This is the command request that will match 6985: # against the hash keywords to lookup the information 6986: # associated with the dispatch information. 6987: # $procedure - Reference to a sub to call to process the request. 6988: # All subs get called as follows: 6989: # Procedure($cmd, $tail, $replyfd, $key) 6990: # $cmd - the actual keyword that invoked us. 6991: # $tail - the tail of the request that invoked us. 6992: # $replyfd- File descriptor connected to the client 6993: # $must_encode - True if the request must be encoded to be good. 6994: # $client_ok - True if it's ok for a client to request this. 6995: # $manager_ok - True if it's ok for a manager to request this. 6996: # Side effects: 6997: # - On success, the Dispatcher hash has an entry added for the key $RequestName 6998: # - On failure, the program will die as it's a bad internal bug to try to 6999: # register a duplicate command handler. 7000: # 7001: sub register_handler { 7002: my ($request_name,$procedure,$must_encode, $client_ok,$manager_ok) = @_; 7003: 7004: # Don't allow duplication# 7005: 7006: if (defined $Dispatcher{$request_name}) { 7007: die "Attempting to define a duplicate request handler for $request_name\n"; 7008: } 7009: # Build the client type mask: 7010: 7011: my $client_type_mask = 0; 7012: if($client_ok) { 7013: $client_type_mask |= $CLIENT_OK; 7014: } 7015: if($manager_ok) { 7016: $client_type_mask |= $MANAGER_OK; 7017: } 7018: 7019: # Enter the hash: 7020: 7021: my @entry = ($procedure, $must_encode, $client_type_mask); 7022: 7023: $Dispatcher{$request_name} = \@entry; 7024: 7025: } 7026: 7027: 7028: #------------------------------------------------------------------ 7029: 7030: 7031: 7032: 7033: # 7034: # Convert an error return code from lcpasswd to a string value. 7035: # 7036: sub lcpasswdstrerror { 7037: my $ErrorCode = shift; 7038: if(($ErrorCode < 0) || ($ErrorCode > $lastpwderror)) { 7039: return "lcpasswd Unrecognized error return value ".$ErrorCode; 7040: } else { 7041: return $passwderrors[$ErrorCode]; 7042: } 7043: } 7044: 7045: # grabs exception and records it to log before exiting 7046: sub catchexception { 7047: my ($error)=@_; 7048: $SIG{'QUIT'}='DEFAULT'; 7049: $SIG{__DIE__}='DEFAULT'; 7050: &status("Catching exception"); 7051: &logthis("CRITICAL: " 7052: ."ABNORMAL EXIT. Child $$ for server ".$perlvar{'lonHostID'}." died through " 7053: ."a crash with this error msg->[$error]"); 7054: &logthis('Famous last words: '.$status.' - '.$lastlog); 7055: if ($client) { print $client "error: $error\n"; } 7056: $server->close(); 7057: die($error); 7058: } 7059: sub timeout { 7060: &status("Handling Timeout"); 7061: &logthis("CRITICAL: TIME OUT ".$$.""); 7062: &catchexception('Timeout'); 7063: } 7064: # -------------------------------- Set signal handlers to record abnormal exits 7065: 7066: 7067: $SIG{'QUIT'}=\&catchexception; 7068: $SIG{__DIE__}=\&catchexception; 7069: 7070: # ---------------------------------- Read loncapa_apache.conf and loncapa.conf 7071: &status("Read loncapa.conf and loncapa_apache.conf"); 7072: my $perlvarref=LONCAPA::Configuration::read_conf('loncapa.conf'); 7073: %perlvar=%{$perlvarref}; 7074: undef $perlvarref; 7075: 7076: # ----------------------------- Make sure this process is running from user=www 7077: my $wwwid=getpwnam('www'); 7078: if ($wwwid!=$<) { 7079: my $emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}"; 7080: my $subj="LON: $currenthostid User ID mismatch"; 7081: system("echo 'User ID mismatch. lond must be run as user www.' |". 7082: " mail -s '$subj' $emailto > /dev/null"); 7083: exit 1; 7084: } 7085: 7086: # --------------------------------------------- Check if other instance running 7087: 7088: my $pidfile="$perlvar{'lonDaemons'}/logs/lond.pid"; 7089: 7090: if (-e $pidfile) { 7091: my $lfh=IO::File->new("$pidfile"); 7092: my $pide=<$lfh>; 7093: chomp($pide); 7094: if (kill 0 => $pide) { die "already running"; } 7095: } 7096: 7097: # ------------------------------------------------------------- Read hosts file 7098: 7099: 7100: 7101: # establish SERVER socket, bind and listen. 7102: $server = IO::Socket::INET->new(LocalPort => $perlvar{'londPort'}, 7103: Type => SOCK_STREAM, 7104: Proto => 'tcp', 7105: ReuseAddr => 1, 7106: Listen => 10 ) 7107: or die "making socket: $@\n"; 7108: 7109: # --------------------------------------------------------- Do global variables 7110: 7111: # global variables 7112: 7113: my %children = (); # keys are current child process IDs 7114: 7115: sub REAPER { # takes care of dead children 7116: $SIG{CHLD} = \&REAPER; 7117: &status("Handling child death"); 7118: my $pid; 7119: do { 7120: $pid = waitpid(-1,&WNOHANG()); 7121: if (defined($children{$pid})) { 7122: &logthis("Child $pid died"); 7123: delete($children{$pid}); 7124: } elsif ($pid > 0) { 7125: &logthis("Unknown Child $pid died"); 7126: } 7127: } while ( $pid > 0 ); 7128: foreach my $child (keys(%children)) { 7129: $pid = waitpid($child,&WNOHANG()); 7130: if ($pid > 0) { 7131: &logthis("Child $child - $pid looks like we missed it's death"); 7132: delete($children{$pid}); 7133: } 7134: } 7135: &status("Finished Handling child death"); 7136: } 7137: 7138: sub HUNTSMAN { # signal handler for SIGINT 7139: &status("Killing children (INT)"); 7140: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children 7141: kill 'INT' => keys %children; 7142: &logthis("Free socket: ".shutdown($server,2)); # free up socket 7143: my $execdir=$perlvar{'lonDaemons'}; 7144: unlink("$execdir/logs/lond.pid"); 7145: &logthis("CRITICAL: Shutting down"); 7146: &status("Done killing children"); 7147: exit; # clean up with dignity 7148: } 7149: 7150: sub HUPSMAN { # signal handler for SIGHUP 7151: local($SIG{CHLD}) = 'IGNORE'; # we're going to kill our children 7152: &status("Killing children for restart (HUP)"); 7153: kill 'INT' => keys %children; 7154: &logthis("Free socket: ".shutdown($server,2)); # free up socket 7155: &logthis("CRITICAL: Restarting"); 7156: my $execdir=$perlvar{'lonDaemons'}; 7157: unlink("$execdir/logs/lond.pid"); 7158: &status("Restarting self (HUP)"); 7159: exec("$execdir/lond"); # here we go again 7160: } 7161: 7162: # 7163: # Reload the Apache daemon's state. 7164: # This is done by invoking /home/httpd/perl/apachereload 7165: # a setuid perl script that can be root for us to do this job. 7166: # 7167: sub ReloadApache { 7168: # --------------------------- Handle case of another apachereload process (locking) 7169: if (&LONCAPA::try_to_lock('/tmp/lock_apachereload')) { 7170: my $execdir = $perlvar{'lonDaemons'}; 7171: my $script = $execdir."/apachereload"; 7172: system($script); 7173: unlink('/tmp/lock_apachereload'); # Remove the lock file. 7174: } 7175: } 7176: 7177: # 7178: # Called in response to a USR2 signal. 7179: # - Reread hosts.tab 7180: # - All children connected to hosts that were removed from hosts.tab 7181: # are killed via SIGINT 7182: # - All children connected to previously existing hosts are sent SIGUSR1 7183: # - Our internal hosts hash is updated to reflect the new contents of 7184: # hosts.tab causing connections from hosts added to hosts.tab to 7185: # now be honored. 7186: # 7187: sub UpdateHosts { 7188: &status("Reload hosts.tab"); 7189: logthis(' Updating connections '); 7190: # 7191: # The %children hash has the set of IP's we currently have children 7192: # on. These need to be matched against records in the hosts.tab 7193: # Any ip's no longer in the table get killed off they correspond to 7194: # either dropped or changed hosts. Note that the re-read of the table 7195: # will take care of new and changed hosts as connections come into being. 7196: 7197: &Apache::lonnet::reset_hosts_info(); 7198: 7199: foreach my $child (keys(%children)) { 7200: my $childip = $children{$child}; 7201: if ($childip ne '127.0.0.1' 7202: && !defined(&Apache::lonnet::get_hosts_from_ip($childip))) { 7203: logthis(' UpdateHosts killing child ' 7204: ." $child for ip $childip "); 7205: kill('INT', $child); 7206: } else { 7207: logthis(' keeping child for ip ' 7208: ." $childip (pid=$child) "); 7209: } 7210: } 7211: ReloadApache; 7212: &status("Finished reloading hosts.tab"); 7213: } 7214: 7215: 7216: sub checkchildren { 7217: &status("Checking on the children (sending signals)"); 7218: &initnewstatus(); 7219: &logstatus(); 7220: &logthis('Going to check on the children'); 7221: my $docdir=$perlvar{'lonDocRoot'}; 7222: foreach (sort keys %children) { 7223: #sleep 1; 7224: unless (kill 'USR1' => $_) { 7225: &logthis ('Child '.$_.' is dead'); 7226: &logstatus($$.' is dead'); 7227: delete($children{$_}); 7228: } 7229: } 7230: sleep 5; 7231: $SIG{ALRM} = sub { Debug("timeout"); 7232: die "timeout"; }; 7233: $SIG{__DIE__} = 'DEFAULT'; 7234: &status("Checking on the children (waiting for reports)"); 7235: foreach (sort keys %children) { 7236: unless (-e "$docdir/lon-status/londchld/$_.txt") { 7237: eval { 7238: alarm(300); 7239: &logthis('Child '.$_.' did not respond'); 7240: kill 9 => $_; 7241: #$emailto="$perlvar{'lonAdmEMail'},$perlvar{'lonSysEMail'}"; 7242: #$subj="LON: $currenthostid killed lond process $_"; 7243: #my $result=`echo 'Killed lond process $_.' | mailto $emailto -s '$subj' > /dev/null`; 7244: #$execdir=$perlvar{'lonDaemons'}; 7245: #$result=`/bin/cp $execdir/logs/lond.log $execdir/logs/lond.log.$_`; 7246: delete($children{$_}); 7247: alarm(0); 7248: } 7249: } 7250: } 7251: $SIG{ALRM} = 'DEFAULT'; 7252: $SIG{__DIE__} = \&catchexception; 7253: &status("Finished checking children"); 7254: &logthis('Finished Checking children'); 7255: } 7256: 7257: # --------------------------------------------------------------------- Logging 7258: 7259: sub logthis { 7260: my $message=shift; 7261: my $execdir=$perlvar{'lonDaemons'}; 7262: my $fh=IO::File->new(">>$execdir/logs/lond.log"); 7263: my $now=time; 7264: my $local=localtime($now); 7265: $lastlog=$local.': '.$message; 7266: print $fh "$local ($$): $message\n"; 7267: } 7268: 7269: # ------------------------- Conditional log if $DEBUG true. 7270: sub Debug { 7271: my $message = shift; 7272: if($DEBUG) { 7273: &logthis($message); 7274: } 7275: } 7276: 7277: # 7278: # Sub to do replies to client.. this gives a hook for some 7279: # debug tracing too: 7280: # Parameters: 7281: # fd - File open on client. 7282: # reply - Text to send to client. 7283: # request - Original request from client. 7284: # 7285: sub Reply { 7286: my ($fd, $reply, $request) = @_; 7287: if (ref($reply)) { 7288: print $fd $$reply; 7289: print $fd "\n"; 7290: if ($DEBUG) { Debug("Request was $request Reply was $$reply"); } 7291: } else { 7292: print $fd $reply; 7293: if ($DEBUG) { Debug("Request was $request Reply was $reply"); } 7294: } 7295: $Transactions++; 7296: } 7297: 7298: 7299: # 7300: # Sub to report a failure. 7301: # This function: 7302: # - Increments the failure statistic counters. 7303: # - Invokes Reply to send the error message to the client. 7304: # Parameters: 7305: # fd - File descriptor open on the client 7306: # reply - Reply text to emit. 7307: # request - The original request message (used by Reply 7308: # to debug if that's enabled. 7309: # Implicit outputs: 7310: # $Failures- The number of failures is incremented. 7311: # Reply (invoked here) sends a message to the 7312: # client: 7313: # 7314: sub Failure { 7315: my $fd = shift; 7316: my $reply = shift; 7317: my $request = shift; 7318: 7319: $Failures++; 7320: Reply($fd, $reply, $request); # That's simple eh? 7321: } 7322: # ------------------------------------------------------------------ Log status 7323: 7324: sub logstatus { 7325: &status("Doing logging"); 7326: my $docdir=$perlvar{'lonDocRoot'}; 7327: { 7328: my $fh=IO::File->new(">$docdir/lon-status/londchld/$$.txt"); 7329: print $fh $status."\n".$lastlog."\n".time."\n$keymode"; 7330: $fh->close(); 7331: } 7332: &status("Finished $$.txt"); 7333: { 7334: open(LOG,">>$docdir/lon-status/londstatus.txt"); 7335: flock(LOG,LOCK_EX); 7336: print LOG $$."\t".$clientname."\t".$currenthostid."\t" 7337: .$status."\t".$lastlog."\t $keymode\n"; 7338: flock(LOG,LOCK_UN); 7339: close(LOG); 7340: } 7341: &status("Finished logging"); 7342: } 7343: 7344: sub initnewstatus { 7345: my $docdir=$perlvar{'lonDocRoot'}; 7346: my $fh=IO::File->new(">$docdir/lon-status/londstatus.txt"); 7347: my $now=time(); 7348: my $local=localtime($now); 7349: print $fh "LOND status $local - parent $$\n\n"; 7350: opendir(DIR,"$docdir/lon-status/londchld"); 7351: while (my $filename=readdir(DIR)) { 7352: unlink("$docdir/lon-status/londchld/$filename"); 7353: } 7354: closedir(DIR); 7355: } 7356: 7357: # -------------------------------------------------------------- Status setting 7358: 7359: sub status { 7360: my $what=shift; 7361: my $now=time; 7362: my $local=localtime($now); 7363: $status=$local.': '.$what; 7364: $0='lond: '.$what.' '.$local; 7365: } 7366: 7367: # -------------------------------------------------------------- Talk to lonsql 7368: 7369: sub sql_reply { 7370: my ($cmd)=@_; 7371: my $answer=&sub_sql_reply($cmd); 7372: if ($answer eq 'con_lost') { $answer=&sub_sql_reply($cmd); } 7373: return $answer; 7374: } 7375: 7376: sub sub_sql_reply { 7377: my ($cmd)=@_; 7378: my $unixsock="mysqlsock"; 7379: my $peerfile="$perlvar{'lonSockDir'}/$unixsock"; 7380: my $sclient=IO::Socket::UNIX->new(Peer =>"$peerfile", 7381: Type => SOCK_STREAM, 7382: Timeout => 10) 7383: or return "con_lost"; 7384: print $sclient "$cmd:$currentdomainid\n"; 7385: my $answer=<$sclient>; 7386: chomp($answer); 7387: if (!$answer) { $answer="con_lost"; } 7388: return $answer; 7389: } 7390: 7391: # --------------------------------------- Is this the home server of an author? 7392: 7393: sub ishome { 7394: my $author=shift; 7395: $author=~s/\/home\/httpd\/html\/res\/([^\/]*)\/([^\/]*).*/$1\/$2/; 7396: my ($udom,$uname)=split(/\//,$author); 7397: my $proname=propath($udom,$uname); 7398: if (-e $proname) { 7399: return 'owner'; 7400: } else { 7401: return 'not_owner'; 7402: } 7403: } 7404: 7405: # ======================================================= Continue main program 7406: # ---------------------------------------------------- Fork once and dissociate 7407: 7408: my $fpid=fork; 7409: exit if $fpid; 7410: die "Couldn't fork: $!" unless defined ($fpid); 7411: 7412: POSIX::setsid() or die "Can't start new session: $!"; 7413: 7414: # ------------------------------------------------------- Write our PID on disk 7415: 7416: my $execdir=$perlvar{'lonDaemons'}; 7417: open (PIDSAVE,">$execdir/logs/lond.pid"); 7418: print PIDSAVE "$$\n"; 7419: close(PIDSAVE); 7420: &logthis("CRITICAL: ---------- Starting ----------"); 7421: &status('Starting'); 7422: 7423: 7424: 7425: # ----------------------------------------------------- Install signal handlers 7426: 7427: 7428: $SIG{CHLD} = \&REAPER; 7429: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN; 7430: $SIG{HUP} = \&HUPSMAN; 7431: $SIG{USR1} = \&checkchildren; 7432: $SIG{USR2} = \&UpdateHosts; 7433: 7434: # Read the host hashes: 7435: &Apache::lonnet::load_hosts_tab(); 7436: my %iphost = &Apache::lonnet::get_iphost(1); 7437: 7438: $dist=`$perlvar{'lonDaemons'}/distprobe`; 7439: 7440: my $arch = `uname -i`; 7441: chomp($arch); 7442: if ($arch eq 'unknown') { 7443: $arch = `uname -m`; 7444: chomp($arch); 7445: } 7446: 7447: # -------------------------------------------------------------- 7448: # Accept connections. When a connection comes in, it is validated 7449: # and if good, a child process is created to process transactions 7450: # along the connection. 7451: 7452: while (1) { 7453: &status('Starting accept'); 7454: $client = $server->accept() or next; 7455: &status('Accepted '.$client.' off to spawn'); 7456: make_new_child($client); 7457: &status('Finished spawning'); 7458: } 7459: 7460: sub make_new_child { 7461: my $pid; 7462: # my $cipher; # Now global 7463: my $sigset; 7464: 7465: $client = shift; 7466: &status('Starting new child '.$client); 7467: &logthis(' Attempting to start child ('.$client. 7468: ")"); 7469: # block signal for fork 7470: $sigset = POSIX::SigSet->new(SIGINT); 7471: sigprocmask(SIG_BLOCK, $sigset) 7472: or die "Can't block SIGINT for fork: $!\n"; 7473: 7474: die "fork: $!" unless defined ($pid = fork); 7475: 7476: $client->sockopt(SO_KEEPALIVE, 1); # Enable monitoring of 7477: # connection liveness. 7478: 7479: # 7480: # Figure out who we're talking to so we can record the peer in 7481: # the pid hash. 7482: # 7483: my $caller = getpeername($client); 7484: my ($port,$iaddr); 7485: if (defined($caller) && length($caller) > 0) { 7486: ($port,$iaddr)=unpack_sockaddr_in($caller); 7487: } else { 7488: &logthis("Unable to determine who caller was, getpeername returned nothing"); 7489: } 7490: if (defined($iaddr)) { 7491: $clientip = inet_ntoa($iaddr); 7492: Debug("Connected with $clientip"); 7493: } else { 7494: &logthis("Unable to determine clientip"); 7495: $clientip='Unavailable'; 7496: } 7497: 7498: if ($pid) { 7499: # Parent records the child's birth and returns. 7500: sigprocmask(SIG_UNBLOCK, $sigset) 7501: or die "Can't unblock SIGINT for fork: $!\n"; 7502: $children{$pid} = $clientip; 7503: &status('Started child '.$pid); 7504: close($client); 7505: return; 7506: } else { 7507: # Child can *not* return from this subroutine. 7508: $SIG{INT} = 'DEFAULT'; # make SIGINT kill us as it did before 7509: $SIG{CHLD} = 'DEFAULT'; #make this default so that pwauth returns 7510: #don't get intercepted 7511: $SIG{USR1}= \&logstatus; 7512: $SIG{ALRM}= \&timeout; 7513: # 7514: # Block sigpipe as it gets thrownon socket disconnect and we want to 7515: # deal with that as a read faiure instead. 7516: # 7517: my $blockset = POSIX::SigSet->new(SIGPIPE); 7518: sigprocmask(SIG_BLOCK, $blockset); 7519: 7520: $lastlog='Forked '; 7521: $status='Forked'; 7522: 7523: # unblock signals 7524: sigprocmask(SIG_UNBLOCK, $sigset) 7525: or die "Can't unblock SIGINT for fork: $!\n"; 7526: 7527: # my $tmpsnum=0; # Now global 7528: #---------------------------------------------------- kerberos 5 initialization 7529: &Authen::Krb5::init_context(); 7530: 7531: my $no_ets; 7532: if ($dist =~ /^(?:centos|rhes|scientific|oracle|rocky|alma)(\d+)/) { 7533: if ($1 >= 7) { 7534: $no_ets = 1; 7535: } 7536: } elsif ($dist =~ /^suse(\d+\.\d+)$/) { 7537: if (($1 eq '9.3') || ($1 >= 12.2)) { 7538: $no_ets = 1; 7539: } 7540: } elsif ($dist =~ /^sles(\d+)$/) { 7541: if ($1 > 11) { 7542: $no_ets = 1; 7543: } 7544: } elsif ($dist =~ /^fedora(\d+)$/) { 7545: if ($1 < 7) { 7546: $no_ets = 1; 7547: } 7548: } 7549: unless ($no_ets) { 7550: &Authen::Krb5::init_ets(); 7551: } 7552: 7553: &status('Accepted connection'); 7554: # ============================================================================= 7555: # do something with the connection 7556: # ----------------------------------------------------------------------------- 7557: # see if we know client and 'check' for spoof IP by ineffective challenge 7558: 7559: my $outsideip=$clientip; 7560: if ($clientip eq '127.0.0.1') { 7561: $outsideip=&Apache::lonnet::get_host_ip($perlvar{'lonHostID'}); 7562: } 7563: &ReadManagerTable(); 7564: my $clientrec=defined(&Apache::lonnet::get_hosts_from_ip($outsideip)); 7565: my $ismanager=($managers{$outsideip} ne undef); 7566: $clientname = "[unknown]"; 7567: if($clientrec) { # Establish client type. 7568: $ConnectionType = "client"; 7569: $clientname = (&Apache::lonnet::get_hosts_from_ip($outsideip))[-1]; 7570: if($ismanager) { 7571: $ConnectionType = "both"; 7572: } 7573: } else { 7574: $ConnectionType = "manager"; 7575: $clientname = $managers{$outsideip}; 7576: } 7577: my $clientok; 7578: 7579: if ($clientrec || $ismanager) { 7580: &status("Waiting for init from $clientip $clientname"); 7581: &logthis('INFO: Connection, '. 7582: $clientip. 7583: " ($clientname) connection type = $ConnectionType " ); 7584: &status("Connecting $clientip ($clientname))"); 7585: my $remotereq=<$client>; 7586: chomp($remotereq); 7587: Debug("Got init: $remotereq"); 7588: 7589: if ($remotereq =~ /^init/) { 7590: &sethost("sethost:$perlvar{'lonHostID'}"); 7591: # 7592: # If the remote is attempting a local init... give that a try: 7593: # 7594: (my $i, my $inittype, $clientversion) = split(/:/, $remotereq); 7595: # For LON-CAPA 2.9, the client session will have sent its LON-CAPA 7596: # version when initiating the connection. For LON-CAPA 2.8 and older, 7597: # the version is retrieved from the global %loncaparevs in lonnet.pm. 7598: # $clientversion contains path to keyfile if $inittype eq 'local' 7599: # it's overridden below in this case 7600: $clientversion ||= $Apache::lonnet::loncaparevs{$clientname}; 7601: 7602: # If the connection type is ssl, but I didn't get my 7603: # certificate files yet, then I'll drop back to 7604: # insecure (if allowed). 7605: 7606: if($inittype eq "ssl") { 7607: my ($ca, $cert) = lonssl::CertificateFile; 7608: my $kfile = lonssl::KeyFile; 7609: if((!$ca) || 7610: (!$cert) || 7611: (!$kfile)) { 7612: $inittype = ""; # This forces insecure attempt. 7613: &logthis(" Certificates not " 7614: ."installed -- trying insecure auth"); 7615: } else { # SSL certificates are in place so 7616: } # Leave the inittype alone. 7617: } 7618: 7619: if($inittype eq "local") { 7620: $clientversion = $perlvar{'lonVersion'}; 7621: my $key = LocalConnection($client, $remotereq); 7622: if($key) { 7623: Debug("Got local key $key"); 7624: $clientok = 1; 7625: my $cipherkey = pack("H32", $key); 7626: $cipher = new IDEA($cipherkey); 7627: print $client "ok:local\n"; 7628: &logthis('' 7629: . "Successful local authentication "); 7630: $keymode = "local" 7631: } else { 7632: Debug("Failed to get local key"); 7633: $clientok = 0; 7634: shutdown($client, 3); 7635: close $client; 7636: } 7637: } elsif ($inittype eq "ssl") { 7638: my $key = SSLConnection($client); 7639: if ($key) { 7640: $clientok = 1; 7641: my $cipherkey = pack("H32", $key); 7642: $cipher = new IDEA($cipherkey); 7643: &logthis('' 7644: ."Successfull ssl authentication with $clientname "); 7645: $keymode = "ssl"; 7646: 7647: } else { 7648: $clientok = 0; 7649: close $client; 7650: } 7651: 7652: } else { 7653: my $ok = InsecureConnection($client); 7654: if($ok) { 7655: $clientok = 1; 7656: &logthis('' 7657: ."Successful insecure authentication with $clientname "); 7658: print $client "ok\n"; 7659: $keymode = "insecure"; 7660: } else { 7661: &logthis('' 7662: ."Attempted insecure connection disallowed "); 7663: close $client; 7664: $clientok = 0; 7665: } 7666: } 7667: } else { 7668: &logthis( 7669: "WARNING: " 7670: ."$clientip failed to initialize: >$remotereq< "); 7671: &status('No init '.$clientip); 7672: } 7673: } else { 7674: &logthis( 7675: "WARNING: Unknown client $clientip"); 7676: &status('Hung up on '.$clientip); 7677: } 7678: 7679: if ($clientok) { 7680: # ---------------- New known client connecting, could mean machine online again 7681: if (&Apache::lonnet::get_host_ip($currenthostid) ne $clientip 7682: && $clientip ne '127.0.0.1') { 7683: &Apache::lonnet::reconlonc($clientname); 7684: } 7685: &logthis("Established connection: $clientname"); 7686: &status('Will listen to '.$clientname); 7687: # ------------------------------------------------------------ Process requests 7688: my $keep_going = 1; 7689: my $user_input; 7690: my $clienthost = &Apache::lonnet::hostname($clientname); 7691: my $clientserverhomeID = &Apache::lonnet::get_server_homeID($clienthost); 7692: $clienthomedom = &Apache::lonnet::host_domain($clientserverhomeID); 7693: while(($user_input = get_request) && $keep_going) { 7694: alarm(120); 7695: Debug("Main: Got $user_input\n"); 7696: $keep_going = &process_request($user_input); 7697: alarm(0); 7698: &status('Listening to '.$clientname." ($keymode)"); 7699: } 7700: 7701: # --------------------------------------------- client unknown or fishy, refuse 7702: } else { 7703: print $client "refused\n"; 7704: $client->close(); 7705: &logthis("WARNING: " 7706: ."Rejected client $clientip, closing connection"); 7707: } 7708: } 7709: 7710: # ============================================================================= 7711: 7712: &logthis("CRITICAL: " 7713: ."Disconnect from $clientip ($clientname)"); 7714: 7715: 7716: # this exit is VERY important, otherwise the child will become 7717: # a producer of more and more children, forking yourself into 7718: # process death. 7719: exit; 7720: 7721: } 7722: # 7723: # Determine if a user is an author for the indicated domain. 7724: # 7725: # Parameters: 7726: # domain - domain to check in . 7727: # user - Name of user to check. 7728: # 7729: # Return: 7730: # 1 - User is an author for domain. 7731: # 0 - User is not an author for domain. 7732: sub is_author { 7733: my ($domain, $user) = @_; 7734: 7735: &Debug("is_author: $user @ $domain"); 7736: 7737: my $hashref = &tie_user_hash($domain, $user, "roles", 7738: &GDBM_READER()); 7739: 7740: # Author role should show up as a key /domain/_au 7741: 7742: my $value; 7743: if ($hashref) { 7744: 7745: my $key = "/$domain/_au"; 7746: if (defined($hashref)) { 7747: $value = $hashref->{$key}; 7748: if(!untie_user_hash($hashref)) { 7749: return 'error: ' . ($!+0)." untie (GDBM) Failed"; 7750: } 7751: } 7752: 7753: if(defined($value)) { 7754: &Debug("$user @ $domain is an author"); 7755: } 7756: } else { 7757: return 'error: '.($!+0)." tie (GDBM) Failed"; 7758: } 7759: 7760: return defined($value); 7761: } 7762: # 7763: # Checks to see if the input roleput request was to set 7764: # an author role. If so, creates construction space 7765: # Parameters: 7766: # request - The request sent to the rolesput subchunk. 7767: # We're looking for /domain/_au 7768: # domain - The domain in which the user is having roles doctored. 7769: # user - Name of the user for which the role is being put. 7770: # authtype - The authentication type associated with the user. 7771: # 7772: sub manage_permissions { 7773: my ($request, $domain, $user, $authtype) = @_; 7774: # See if the request is of the form /$domain/_au 7775: if($request =~ /^(\/\Q$domain\E\/_au)$/) { # It's an author rolesput... 7776: my $path=$perlvar{'lonDocRoot'}."/priv/$domain"; 7777: unless (-e $path) { 7778: mkdir($path); 7779: } 7780: unless (-e $path.'/'.$user) { 7781: mkdir($path.'/'.$user); 7782: } 7783: } 7784: } 7785: 7786: 7787: # 7788: # Return the full path of a user password file, whether it exists or not. 7789: # Parameters: 7790: # domain - Domain in which the password file lives. 7791: # user - name of the user. 7792: # Returns: 7793: # Full passwd path: 7794: # 7795: sub password_path { 7796: my ($domain, $user) = @_; 7797: return &propath($domain, $user).'/passwd'; 7798: } 7799: 7800: # Password Filename 7801: # Returns the path to a passwd file given domain and user... only if 7802: # it exists. 7803: # Parameters: 7804: # domain - Domain in which to search. 7805: # user - username. 7806: # Returns: 7807: # - If the password file exists returns its path. 7808: # - If the password file does not exist, returns undefined. 7809: # 7810: sub password_filename { 7811: my ($domain, $user) = @_; 7812: 7813: Debug ("PasswordFilename called: dom = $domain user = $user"); 7814: 7815: my $path = &password_path($domain, $user); 7816: Debug("PasswordFilename got path: $path"); 7817: if(-e $path) { 7818: return $path; 7819: } else { 7820: return undef; 7821: } 7822: } 7823: 7824: # 7825: # Rewrite the contents of the user's passwd file. 7826: # Parameters: 7827: # domain - domain of the user. 7828: # name - User's name. 7829: # contents - New contents of the file. 7830: # saveold - (optional). If true save old file in a passwd.bak file. 7831: # Returns: 7832: # 0 - Failed. 7833: # 1 - Success. 7834: # 7835: sub rewrite_password_file { 7836: my ($domain, $user, $contents, $saveold) = @_; 7837: 7838: my $file = &password_filename($domain, $user); 7839: if (defined $file) { 7840: if ($saveold) { 7841: my $bakfile = $file.'.bak'; 7842: if (CopyFile($file,$bakfile)) { 7843: chmod(0400,$bakfile); 7844: &logthis("Old password saved in passwd.bak for internally authenticated user: $user:$domain"); 7845: } else { 7846: &logthis("Failed to save old password in passwd.bak for internally authenticated user: $user:$domain"); 7847: } 7848: } 7849: my $pf = IO::File->new(">$file"); 7850: if($pf) { 7851: print $pf "$contents\n"; 7852: return 1; 7853: } else { 7854: return 0; 7855: } 7856: } else { 7857: return 0; 7858: } 7859: 7860: } 7861: 7862: # 7863: # get_auth_type - Determines the authorization type of a user in a domain. 7864: 7865: # Returns the authorization type or nouser if there is no such user. 7866: # 7867: sub get_auth_type { 7868: my ($domain, $user) = @_; 7869: 7870: Debug("get_auth_type( $domain, $user ) \n"); 7871: my $proname = &propath($domain, $user); 7872: my $passwdfile = "$proname/passwd"; 7873: if( -e $passwdfile ) { 7874: my $pf = IO::File->new($passwdfile); 7875: my $realpassword = <$pf>; 7876: chomp($realpassword); 7877: Debug("Password info = $realpassword\n"); 7878: my ($authtype, $contentpwd) = split(/:/, $realpassword); 7879: Debug("Authtype = $authtype, content = $contentpwd\n"); 7880: return "$authtype:$contentpwd"; 7881: } else { 7882: Debug("Returning nouser"); 7883: return "nouser"; 7884: } 7885: } 7886: 7887: # 7888: # Validate a user given their domain, name and password. This utility 7889: # function is used by both AuthenticateHandler and ChangePasswordHandler 7890: # to validate the login credentials of a user. 7891: # Parameters: 7892: # $domain - The domain being logged into (this is required due to 7893: # the capability for multihomed systems. 7894: # $user - The name of the user being validated. 7895: # $password - The user's propoposed password. 7896: # 7897: # Returns: 7898: # 1 - The domain,user,pasword triplet corresponds to a valid 7899: # user. 7900: # 0 - The domain,user,password triplet is not a valid user. 7901: # 7902: sub validate_user { 7903: my ($domain, $user, $password, $checkdefauth) = @_; 7904: 7905: # Why negative ~pi you may well ask? Well this function is about 7906: # authentication, and therefore very important to get right. 7907: # I've initialized the flag that determines whether or not I've 7908: # validated correctly to a value it's not supposed to get. 7909: # At the end of this function. I'll ensure that it's not still that 7910: # value so we don't just wind up returning some accidental value 7911: # as a result of executing an unforseen code path that 7912: # did not set $validated. At the end of valid execution paths, 7913: # validated shoule be 1 for success or 0 for failuer. 7914: 7915: my $validated = -3.14159; 7916: 7917: # How we authenticate is determined by the type of authentication 7918: # the user has been assigned. If the authentication type is 7919: # "nouser", the user does not exist so we will return 0. 7920: 7921: my $contents = &get_auth_type($domain, $user); 7922: my ($howpwd, $contentpwd) = split(/:/, $contents); 7923: 7924: my $null = pack("C",0); # Used by kerberos auth types. 7925: 7926: if ($howpwd eq 'nouser') { 7927: if ($checkdefauth) { 7928: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain); 7929: if ($domdefaults{'auth_def'} eq 'localauth') { 7930: $howpwd = $domdefaults{'auth_def'}; 7931: $contentpwd = $domdefaults{'auth_arg_def'}; 7932: } elsif ((($domdefaults{'auth_def'} eq 'krb4') || 7933: ($domdefaults{'auth_def'} eq 'krb5')) && 7934: ($domdefaults{'auth_arg_def'} ne '')) { 7935: # 7936: # Don't attempt authentication for username and password supplied 7937: # for user without an account if username contains @ to avoid 7938: # call to &Authen::Krb5::parse_name() which will result in con_lost 7939: # 7940: unless ($user =~ /\@/) { 7941: $howpwd = $domdefaults{'auth_def'}; 7942: $contentpwd = $domdefaults{'auth_arg_def'}; 7943: } 7944: } 7945: } 7946: } 7947: if ($howpwd ne 'nouser') { 7948: if($howpwd eq "internal") { # Encrypted is in local password file. 7949: if (length($contentpwd) == 13) { 7950: $validated = (crypt($password,$contentpwd) eq $contentpwd); 7951: if ($validated) { 7952: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain); 7953: if ($domdefaults{'intauth_switch'}) { 7954: my $ncpass = &hash_passwd($domain,$password); 7955: my $saveold; 7956: if ($domdefaults{'intauth_switch'} == 2) { 7957: $saveold = 1; 7958: } 7959: if (&rewrite_password_file($domain,$user,"$howpwd:$ncpass",$saveold)) { 7960: &update_passwd_history($user,$domain,$howpwd,'conversion'); 7961: &logthis("Validated password hashed with bcrypt for $user:$domain"); 7962: } 7963: } 7964: } 7965: } else { 7966: $validated = &check_internal_passwd($password,$contentpwd,$domain,$user); 7967: } 7968: } 7969: elsif ($howpwd eq "unix") { # User is a normal unix user. 7970: $contentpwd = (getpwnam($user))[1]; 7971: if($contentpwd) { 7972: if($contentpwd eq 'x') { # Shadow password file... 7973: my $pwauth_path = "/usr/local/sbin/pwauth"; 7974: open PWAUTH, "|$pwauth_path" or 7975: die "Cannot invoke authentication"; 7976: print PWAUTH "$user\n$password\n"; 7977: close PWAUTH; 7978: $validated = ! $?; 7979: 7980: } else { # Passwords in /etc/passwd. 7981: $validated = (crypt($password, 7982: $contentpwd) eq $contentpwd); 7983: } 7984: } else { 7985: $validated = 0; 7986: } 7987: } elsif ($howpwd eq "krb4") { # user is in kerberos 4 auth. domain. 7988: my $checkwithkrb5 = 0; 7989: if ($dist =~/^fedora(\d+)$/) { 7990: if ($1 > 11) { 7991: $checkwithkrb5 = 1; 7992: } 7993: } elsif ($dist =~ /^suse([\d.]+)$/) { 7994: if ($1 > 11.1) { 7995: $checkwithkrb5 = 1; 7996: } 7997: } 7998: if ($checkwithkrb5) { 7999: $validated = &krb5_authen($password,$null,$user,$contentpwd); 8000: } else { 8001: $validated = &krb4_authen($password,$null,$user,$contentpwd); 8002: } 8003: } elsif ($howpwd eq "krb5") { # User is in kerberos 5 auth. domain. 8004: $validated = &krb5_authen($password,$null,$user,$contentpwd); 8005: } elsif ($howpwd eq "localauth") { 8006: # Authenticate via installation specific authentcation method: 8007: $validated = &localauth::localauth($user, 8008: $password, 8009: $contentpwd, 8010: $domain); 8011: if ($validated < 0) { 8012: &logthis("localauth for $contentpwd $user:$domain returned a $validated"); 8013: $validated = 0; 8014: } 8015: } else { # Unrecognized auth is also bad. 8016: $validated = 0; 8017: } 8018: } else { 8019: $validated = 0; 8020: } 8021: # 8022: # $validated has the correct stat of the authentication: 8023: # 8024: 8025: unless ($validated != -3.14159) { 8026: # I >really really< want to know if this happens. 8027: # since it indicates that user authentication is badly 8028: # broken in some code path. 8029: # 8030: die "ValidateUser - failed to set the value of validated $domain, $user $password"; 8031: } 8032: return $validated; 8033: } 8034: 8035: sub check_internal_passwd { 8036: my ($plainpass,$stored,$domain,$user) = @_; 8037: my (undef,$method,@rest) = split(/!/,$stored); 8038: if ($method eq 'bcrypt') { 8039: my $result = &hash_passwd($domain,$plainpass,@rest); 8040: if ($result ne $stored) { 8041: return 0; 8042: } 8043: my %domdefaults = &Apache::lonnet::get_domain_defaults($domain); 8044: if ($domdefaults{'intauth_check'}) { 8045: # Upgrade to a larger number of rounds if necessary 8046: my $defaultcost = $domdefaults{'intauth_cost'}; 8047: if (($defaultcost eq '') || ($defaultcost =~ /D/)) { 8048: $defaultcost = 10; 8049: } 8050: if (int($rest[0])<int($defaultcost)) { 8051: if ($domdefaults{'intauth_check'} == 1) { 8052: my $ncpass = &hash_passwd($domain,$plainpass); 8053: if (&rewrite_password_file($domain,$user,"internal:$ncpass")) { 8054: &update_passwd_history($user,$domain,'internal','update cost'); 8055: &logthis("Validated password hashed with bcrypt for $user:$domain"); 8056: } 8057: return 1; 8058: } elsif ($domdefaults{'intauth_check'} == 2) { 8059: return 0; 8060: } 8061: } 8062: } else { 8063: return 1; 8064: } 8065: } 8066: return 0; 8067: } 8068: 8069: sub get_last_authchg { 8070: my ($domain,$user) = @_; 8071: my $lastmod; 8072: my $logname = &propath($domain,$user).'/passwd.log'; 8073: if (-e "$logname") { 8074: $lastmod = (stat("$logname"))[9]; 8075: } 8076: return $lastmod; 8077: } 8078: 8079: sub krb4_authen { 8080: my ($password,$null,$user,$contentpwd) = @_; 8081: my $validated = 0; 8082: if (!($password =~ /$null/) ) { # Null password not allowed. 8083: eval { 8084: require Authen::Krb4; 8085: }; 8086: if (!$@) { 8087: my $k4error = &Authen::Krb4::get_pw_in_tkt($user, 8088: "", 8089: $contentpwd,, 8090: 'krbtgt', 8091: $contentpwd, 8092: 1, 8093: $password); 8094: if(!$k4error) { 8095: $validated = 1; 8096: } else { 8097: $validated = 0; 8098: &logthis('krb4: '.$user.', '.$contentpwd.', '. 8099: &Authen::Krb4::get_err_txt($Authen::Krb4::error)); 8100: } 8101: } else { 8102: $validated = krb5_authen($password,$null,$user,$contentpwd); 8103: } 8104: } 8105: return $validated; 8106: } 8107: 8108: sub krb5_authen { 8109: my ($password,$null,$user,$contentpwd) = @_; 8110: my $validated = 0; 8111: if(!($password =~ /$null/)) { # Null password not allowed. 8112: my $krbclient = &Authen::Krb5::parse_name($user.'@' 8113: .$contentpwd); 8114: my $krbservice = "krbtgt/".$contentpwd."\@".$contentpwd; 8115: my $krbserver = &Authen::Krb5::parse_name($krbservice); 8116: my $credentials= &Authen::Krb5::cc_default(); 8117: $credentials->initialize(&Authen::Krb5::parse_name($user.'@' 8118: .$contentpwd)); 8119: my $krbreturn; 8120: if (exists(&Authen::Krb5::get_init_creds_password)) { 8121: $krbreturn = 8122: &Authen::Krb5::get_init_creds_password($krbclient,$password, 8123: $krbservice); 8124: $validated = (ref($krbreturn) eq 'Authen::Krb5::Creds'); 8125: } else { 8126: $krbreturn = 8127: &Authen::Krb5::get_in_tkt_with_password($krbclient,$krbserver, 8128: $password,$credentials); 8129: $validated = ($krbreturn == 1); 8130: } 8131: if (!$validated) { 8132: &logthis('krb5: '.$user.', '.$contentpwd.', '. 8133: &Authen::Krb5::error()); 8134: } 8135: } 8136: return $validated; 8137: } 8138: 8139: sub addline { 8140: my ($fname,$hostid,$ip,$newline)=@_; 8141: my $contents; 8142: my $found=0; 8143: my $expr='^'.quotemeta($hostid).':'.quotemeta($ip).':'; 8144: my $sh; 8145: if ($sh=IO::File->new("$fname.subscription")) { 8146: while (my $subline=<$sh>) { 8147: if ($subline !~ /$expr/) {$contents.= $subline;} else {$found=1;} 8148: } 8149: $sh->close(); 8150: } 8151: $sh=IO::File->new(">$fname.subscription"); 8152: if ($contents) { print $sh $contents; } 8153: if ($newline) { print $sh $newline; } 8154: $sh->close(); 8155: return $found; 8156: } 8157: 8158: sub get_chat { 8159: my ($cdom,$cname,$udom,$uname,$group)=@_; 8160: 8161: my @entries=(); 8162: my $namespace = 'nohist_chatroom'; 8163: my $namespace_inroom = 'nohist_inchatroom'; 8164: if ($group ne '') { 8165: $namespace .= '_'.$group; 8166: $namespace_inroom .= '_'.$group; 8167: } 8168: my $hashref = &tie_user_hash($cdom, $cname, $namespace, 8169: &GDBM_READER()); 8170: if ($hashref) { 8171: @entries=map { $_.':'.$hashref->{$_} } sort(keys(%$hashref)); 8172: &untie_user_hash($hashref); 8173: } 8174: my @participants=(); 8175: my $cutoff=time-60; 8176: $hashref = &tie_user_hash($cdom, $cname, $namespace_inroom, 8177: &GDBM_WRCREAT()); 8178: if ($hashref) { 8179: $hashref->{$uname.':'.$udom}=time; 8180: foreach my $user (sort(keys(%$hashref))) { 8181: if ($hashref->{$user}>$cutoff) { 8182: push(@participants, 'active_participant:'.$user); 8183: } 8184: } 8185: &untie_user_hash($hashref); 8186: } 8187: return (@participants,@entries); 8188: } 8189: 8190: sub chat_add { 8191: my ($cdom,$cname,$newchat,$group)=@_; 8192: my @entries=(); 8193: my $time=time; 8194: my $namespace = 'nohist_chatroom'; 8195: my $logfile = 'chatroom.log'; 8196: if ($group ne '') { 8197: $namespace .= '_'.$group; 8198: $logfile = 'chatroom_'.$group.'.log'; 8199: } 8200: my $hashref = &tie_user_hash($cdom, $cname, $namespace, 8201: &GDBM_WRCREAT()); 8202: if ($hashref) { 8203: @entries=map { $_.':'.$hashref->{$_} } sort(keys(%$hashref)); 8204: my ($lastid)=($entries[$#entries]=~/^(\w+)\:/); 8205: my ($thentime,$idnum)=split(/\_/,$lastid); 8206: my $newid=$time.'_000000'; 8207: if ($thentime==$time) { 8208: $idnum=~s/^0+//; 8209: $idnum++; 8210: $idnum=substr('000000'.$idnum,-6,6); 8211: $newid=$time.'_'.$idnum; 8212: } 8213: $hashref->{$newid}=$newchat; 8214: my $expired=$time-3600; 8215: foreach my $comment (keys(%$hashref)) { 8216: my ($thistime) = ($comment=~/(\d+)\_/); 8217: if ($thistime<$expired) { 8218: delete $hashref->{$comment}; 8219: } 8220: } 8221: { 8222: my $proname=&propath($cdom,$cname); 8223: if (open(CHATLOG,">>$proname/$logfile")) { 8224: print CHATLOG ("$time:".&unescape($newchat)."\n"); 8225: } 8226: close(CHATLOG); 8227: } 8228: &untie_user_hash($hashref); 8229: } 8230: } 8231: 8232: sub unsub { 8233: my ($fname,$clientip)=@_; 8234: my $result; 8235: my $unsubs = 0; # Number of successful unsubscribes: 8236: 8237: 8238: # An old way subscriptions were handled was to have a 8239: # subscription marker file: 8240: 8241: Debug("Attempting unlink of $fname.$clientname"); 8242: if (unlink("$fname.$clientname")) { 8243: $unsubs++; # Successful unsub via marker file. 8244: } 8245: 8246: # The more modern way to do it is to have a subscription list 8247: # file: 8248: 8249: if (-e "$fname.subscription") { 8250: my $found=&addline($fname,$clientname,$clientip,''); 8251: if ($found) { 8252: $unsubs++; 8253: } 8254: } 8255: 8256: # If either or both of these mechanisms succeeded in unsubscribing a 8257: # resource we can return ok: 8258: 8259: if($unsubs) { 8260: $result = "ok\n"; 8261: } else { 8262: $result = "not_subscribed\n"; 8263: } 8264: 8265: return $result; 8266: } 8267: 8268: sub currentversion { 8269: my $fname=shift; 8270: my $version=-1; 8271: my $ulsdir=''; 8272: if ($fname=~/^(.+)\/[^\/]+$/) { 8273: $ulsdir=$1; 8274: } 8275: my ($fnamere1,$fnamere2); 8276: # remove version if already specified 8277: $fname=~s/\.\d+\.(\w+(?:\.meta)*)$/\.$1/; 8278: # get the bits that go before and after the version number 8279: if ( $fname=~/^(.*\.)(\w+(?:\.meta)*)$/ ) { 8280: $fnamere1=$1; 8281: $fnamere2='.'.$2; 8282: } 8283: if (-e $fname) { $version=1; } 8284: if (-e $ulsdir) { 8285: if(-d $ulsdir) { 8286: if (opendir(LSDIR,$ulsdir)) { 8287: my $ulsfn; 8288: while ($ulsfn=readdir(LSDIR)) { 8289: # see if this is a regular file (ignore links produced earlier) 8290: my $thisfile=$ulsdir.'/'.$ulsfn; 8291: unless (-l $thisfile) { 8292: if ($thisfile=~/\Q$fnamere1\E(\d+)\Q$fnamere2\E$/) { 8293: if ($1>$version) { $version=$1; } 8294: } 8295: } 8296: } 8297: closedir(LSDIR); 8298: $version++; 8299: } 8300: } 8301: } 8302: return $version; 8303: } 8304: 8305: sub thisversion { 8306: my $fname=shift; 8307: my $version=-1; 8308: if ($fname=~/\.(\d+)\.\w+(?:\.meta)*$/) { 8309: $version=$1; 8310: } 8311: return $version; 8312: } 8313: 8314: sub subscribe { 8315: my ($userinput,$clientip)=@_; 8316: my $result; 8317: my ($cmd,$fname)=split(/:/,$userinput,2); 8318: my $ownership=&ishome($fname); 8319: if ($ownership eq 'owner') { 8320: # explitly asking for the current version? 8321: unless (-e $fname) { 8322: my $currentversion=&currentversion($fname); 8323: if (&thisversion($fname)==$currentversion) { 8324: if ($fname=~/^(.+)\.\d+\.(\w+(?:\.meta)*)$/) { 8325: my $root=$1; 8326: my $extension=$2; 8327: symlink($root.'.'.$extension, 8328: $root.'.'.$currentversion.'.'.$extension); 8329: unless ($extension=~/\.meta$/) { 8330: symlink($root.'.'.$extension.'.meta', 8331: $root.'.'.$currentversion.'.'.$extension.'.meta'); 8332: } 8333: } 8334: } 8335: } 8336: if (-e $fname) { 8337: if (-d $fname) { 8338: $result="directory\n"; 8339: } else { 8340: if (-e "$fname.$clientname") {&unsub($fname,$clientip);} 8341: my $now=time; 8342: my $found=&addline($fname,$clientname,$clientip, 8343: "$clientname:$clientip:$now\n"); 8344: if ($found) { $result="$fname\n"; } 8345: # if they were subscribed to only meta data, delete that 8346: # subscription, when you subscribe to a file you also get 8347: # the metadata 8348: unless ($fname=~/\.meta$/) { &unsub("$fname.meta",$clientip); } 8349: $fname=~s/\/home\/httpd\/html\/res/raw/; 8350: my $protocol = $Apache::lonnet::protocol{$perlvar{'lonHostID'}}; 8351: $protocol = 'http' if ($protocol ne 'https'); 8352: $fname=$protocol.'://'.&Apache::lonnet::hostname($perlvar{'lonHostID'})."/".$fname; 8353: $result="$fname\n"; 8354: } 8355: } else { 8356: $result="not_found\n"; 8357: } 8358: } else { 8359: $result="rejected\n"; 8360: } 8361: return $result; 8362: } 8363: # Change the passwd of a unix user. The caller must have 8364: # first verified that the user is a loncapa user. 8365: # 8366: # Parameters: 8367: # user - Unix user name to change. 8368: # pass - New password for the user. 8369: # Returns: 8370: # ok - if success 8371: # other - Some meaningfule error message string. 8372: # NOTE: 8373: # invokes a setuid script to change the passwd. 8374: sub change_unix_password { 8375: my ($user, $pass) = @_; 8376: 8377: &Debug("change_unix_password"); 8378: my $execdir=$perlvar{'lonDaemons'}; 8379: &Debug("Opening lcpasswd pipeline"); 8380: my $pf = IO::File->new("|$execdir/lcpasswd > " 8381: ."$perlvar{'lonDaemons'}" 8382: ."/logs/lcpasswd.log"); 8383: print $pf "$user\n$pass\n$pass\n"; 8384: close $pf; 8385: my $err = $?; 8386: return ($err < @passwderrors) ? $passwderrors[$err] : 8387: "pwchange_falure - unknown error"; 8388: 8389: 8390: } 8391: 8392: 8393: sub make_passwd_file { 8394: my ($uname,$udom,$umode,$npass,$passfilename,$action)=@_; 8395: my $result="ok"; 8396: if ($umode eq 'krb4' or $umode eq 'krb5') { 8397: { 8398: my $pf = IO::File->new(">$passfilename"); 8399: if ($pf) { 8400: print $pf "$umode:$npass\n"; 8401: &update_passwd_history($uname,$udom,$umode,$action); 8402: } else { 8403: $result = "pass_file_failed_error"; 8404: } 8405: } 8406: } elsif ($umode eq 'internal') { 8407: my $ncpass = &hash_passwd($udom,$npass); 8408: { 8409: &Debug("Creating internal auth"); 8410: my $pf = IO::File->new(">$passfilename"); 8411: if($pf) { 8412: print $pf "internal:$ncpass\n"; 8413: &update_passwd_history($uname,$udom,$umode,$action); 8414: } else { 8415: $result = "pass_file_failed_error"; 8416: } 8417: } 8418: } elsif ($umode eq 'localauth') { 8419: { 8420: my $pf = IO::File->new(">$passfilename"); 8421: if($pf) { 8422: print $pf "localauth:$npass\n"; 8423: &update_passwd_history($uname,$udom,$umode,$action); 8424: } else { 8425: $result = "pass_file_failed_error"; 8426: } 8427: } 8428: } elsif ($umode eq 'unix') { 8429: &logthis(">>>Attempt to create unix account blocked -- unix auth not available for new users."); 8430: $result="no_new_unix_accounts"; 8431: } elsif ($umode eq 'none') { 8432: { 8433: my $pf = IO::File->new("> $passfilename"); 8434: if($pf) { 8435: print $pf "none:\n"; 8436: } else { 8437: $result = "pass_file_failed_error"; 8438: } 8439: } 8440: } else { 8441: $result="auth_mode_error"; 8442: } 8443: return $result; 8444: } 8445: 8446: sub convert_photo { 8447: my ($start,$dest)=@_; 8448: system("convert $start $dest"); 8449: } 8450: 8451: sub sethost { 8452: my ($remotereq) = @_; 8453: my (undef,$hostid)=split(/:/,$remotereq); 8454: # ignore sethost if we are already correct 8455: if ($hostid eq $currenthostid) { 8456: return 'ok'; 8457: } 8458: 8459: if (!defined($hostid)) { $hostid=$perlvar{'lonHostID'}; } 8460: if (&Apache::lonnet::get_host_ip($perlvar{'lonHostID'}) 8461: eq &Apache::lonnet::get_host_ip($hostid)) { 8462: $currenthostid =$hostid; 8463: $currentdomainid=&Apache::lonnet::host_domain($hostid); 8464: # &logthis("Setting hostid to $hostid, and domain to $currentdomainid"); 8465: } else { 8466: &logthis("Requested host id $hostid not an alias of ". 8467: $perlvar{'lonHostID'}." refusing connection"); 8468: return 'unable_to_set'; 8469: } 8470: return 'ok'; 8471: } 8472: 8473: sub version { 8474: my ($userinput)=@_; 8475: $remoteVERSION=(split(/:/,$userinput))[1]; 8476: return "version:$VERSION"; 8477: } 8478: 8479: sub get_usersession_config { 8480: my ($dom,$name) = @_; 8481: my ($usersessionconf,$cached)=&Apache::lonnet::is_cached_new($name,$dom); 8482: if (defined($cached)) { 8483: return $usersessionconf; 8484: } else { 8485: my %domconfig = &Apache::lonnet::get_dom('configuration',['usersessions'],$dom); 8486: if (ref($domconfig{'usersessions'}) eq 'HASH') { 8487: &Apache::lonnet::do_cache_new($name,$dom,$domconfig{'usersessions'},3600); 8488: return $domconfig{'usersessions'}; 8489: } 8490: } 8491: return; 8492: } 8493: 8494: sub get_usersearch_config { 8495: my ($dom,$name) = @_; 8496: my ($usersearchconf,$cached)=&Apache::lonnet::is_cached_new($name,$dom); 8497: if (defined($cached)) { 8498: return $usersearchconf; 8499: } else { 8500: my %domconfig = &Apache::lonnet::get_dom('configuration',['directorysrch'],$dom); 8501: &Apache::lonnet::do_cache_new($name,$dom,$domconfig{'directorysrch'},3600); 8502: return $domconfig{'directorysrch'}; 8503: } 8504: return; 8505: } 8506: 8507: sub distro_and_arch { 8508: return $dist.':'.$arch; 8509: } 8510: 8511: # ----------------------------------- POD (plain old documentation, CPAN style) 8512: 8513: =head1 NAME 8514: 8515: lond - "LON Daemon" Server (port "LOND" 5663) 8516: 8517: =head1 SYNOPSIS 8518: 8519: Usage: B<lond> 8520: 8521: Should only be run as user=www. This is a command-line script which 8522: is invoked by B<loncron>. There is no expectation that a typical user 8523: will manually start B<lond> from the command-line. (In other words, 8524: DO NOT START B<lond> YOURSELF.) 8525: 8526: =head1 DESCRIPTION 8527: 8528: There are two characteristics associated with the running of B<lond>, 8529: PROCESS MANAGEMENT (starting, stopping, handling child processes) 8530: and SERVER-SIDE ACTIVITIES (password authentication, user creation, 8531: subscriptions, etc). These are described in two large 8532: sections below. 8533: 8534: B<PROCESS MANAGEMENT> 8535: 8536: Preforker - server who forks first. Runs as a daemon. HUPs. 8537: Uses IDEA encryption 8538: 8539: B<lond> forks off children processes that correspond to the other servers 8540: in the network. Management of these processes can be done at the 8541: parent process level or the child process level. 8542: 8543: B<logs/lond.log> is the location of log messages. 8544: 8545: The process management is now explained in terms of linux shell commands, 8546: subroutines internal to this code, and signal assignments: 8547: 8548: =over 4 8549: 8550: =item * 8551: 8552: PID is stored in B<logs/lond.pid> 8553: 8554: This is the process id number of the parent B<lond> process. 8555: 8556: =item * 8557: 8558: SIGTERM and SIGINT 8559: 8560: Parent signal assignment: 8561: $SIG{INT} = $SIG{TERM} = \&HUNTSMAN; 8562: 8563: Child signal assignment: 8564: $SIG{INT} = 'DEFAULT'; (and SIGTERM is DEFAULT also) 8565: (The child dies and a SIGALRM is sent to parent, awaking parent from slumber 8566: to restart a new child.) 8567: 8568: Command-line invocations: 8569: B<kill> B<-s> SIGTERM I<PID> 8570: B<kill> B<-s> SIGINT I<PID> 8571: 8572: Subroutine B<HUNTSMAN>: 8573: This is only invoked for the B<lond> parent I<PID>. 8574: This kills all the children, and then the parent. 8575: The B<lonc.pid> file is cleared. 8576: 8577: =item * 8578: 8579: SIGHUP 8580: 8581: Current bug: 8582: This signal can only be processed the first time 8583: on the parent process. Subsequent SIGHUP signals 8584: have no effect. 8585: 8586: Parent signal assignment: 8587: $SIG{HUP} = \&HUPSMAN; 8588: 8589: Child signal assignment: 8590: none (nothing happens) 8591: 8592: Command-line invocations: 8593: B<kill> B<-s> SIGHUP I<PID> 8594: 8595: Subroutine B<HUPSMAN>: 8596: This is only invoked for the B<lond> parent I<PID>, 8597: This kills all the children, and then the parent. 8598: The B<lond.pid> file is cleared. 8599: 8600: =item * 8601: 8602: SIGUSR1 8603: 8604: Parent signal assignment: 8605: $SIG{USR1} = \&USRMAN; 8606: 8607: Child signal assignment: 8608: $SIG{USR1}= \&logstatus; 8609: 8610: Command-line invocations: 8611: B<kill> B<-s> SIGUSR1 I<PID> 8612: 8613: Subroutine B<USRMAN>: 8614: When invoked for the B<lond> parent I<PID>, 8615: SIGUSR1 is sent to all the children, and the status of 8616: each connection is logged. 8617: 8618: =item * 8619: 8620: SIGUSR2 8621: 8622: Parent Signal assignment: 8623: $SIG{USR2} = \&UpdateHosts 8624: 8625: Child signal assignment: 8626: NONE 8627: 8628: 8629: =item * 8630: 8631: SIGCHLD 8632: 8633: Parent signal assignment: 8634: $SIG{CHLD} = \&REAPER; 8635: 8636: Child signal assignment: 8637: none 8638: 8639: Command-line invocations: 8640: B<kill> B<-s> SIGCHLD I<PID> 8641: 8642: Subroutine B<REAPER>: 8643: This is only invoked for the B<lond> parent I<PID>. 8644: Information pertaining to the child is removed. 8645: The socket port is cleaned up. 8646: 8647: =back 8648: 8649: B<SERVER-SIDE ACTIVITIES> 8650: 8651: Server-side information can be accepted in an encrypted or non-encrypted 8652: method. 8653: 8654: =over 4 8655: 8656: =item ping 8657: 8658: Query a client in the hosts.tab table; "Are you there?" 8659: 8660: =item pong 8661: 8662: Respond to a ping query. 8663: 8664: =item ekey 8665: 8666: Read in encrypted key, make cipher. Respond with a buildkey. 8667: 8668: =item load 8669: 8670: Respond with CPU load based on a computation upon /proc/loadavg. 8671: 8672: =item currentauth 8673: 8674: Reply with current authentication information (only over an 8675: encrypted channel). 8676: 8677: =item auth 8678: 8679: Only over an encrypted channel, reply as to whether a user's 8680: authentication information can be validated. 8681: 8682: =item passwd 8683: 8684: Allow for a password to be set. 8685: 8686: =item makeuser 8687: 8688: Make a user. 8689: 8690: =item passwd 8691: 8692: Allow for authentication mechanism and password to be changed. 8693: 8694: =item home 8695: 8696: Respond to a question "are you the home for a given user?" 8697: 8698: =item update 8699: 8700: Update contents of a subscribed resource. 8701: 8702: =item unsubscribe 8703: 8704: The server is unsubscribing from a resource. 8705: 8706: =item subscribe 8707: 8708: The server is subscribing to a resource. 8709: 8710: =item log 8711: 8712: Place in B<logs/lond.log> 8713: 8714: =item put 8715: 8716: stores hash in namespace 8717: 8718: =item rolesput 8719: 8720: put a role into a user's environment 8721: 8722: =item get 8723: 8724: returns hash with keys from array 8725: reference filled in from namespace 8726: 8727: =item eget 8728: 8729: returns hash with keys from array 8730: reference filled in from namesp (encrypts the return communication) 8731: 8732: =item rolesget 8733: 8734: get a role from a user's environment 8735: 8736: =item del 8737: 8738: deletes keys out of array from namespace 8739: 8740: =item keys 8741: 8742: returns namespace keys 8743: 8744: =item dump 8745: 8746: dumps the complete (or key matching regexp) namespace into a hash 8747: 8748: =item store 8749: 8750: stores hash permanently 8751: for this url; hashref needs to be given and should be a \%hashname; the 8752: remaining args aren't required and if they aren't passed or are '' they will 8753: be derived from the ENV 8754: 8755: =item restore 8756: 8757: returns a hash for a given url 8758: 8759: =item querysend 8760: 8761: Tells client about the lonsql process that has been launched in response 8762: to a sent query. 8763: 8764: =item queryreply 8765: 8766: Accept information from lonsql and make appropriate storage in temporary 8767: file space. 8768: 8769: =item idput 8770: 8771: Defines usernames as corresponding to IDs. (These "IDs" are unique identifiers 8772: for each student, defined perhaps by the institutional Registrar.) 8773: 8774: =item idget 8775: 8776: Returns usernames corresponding to IDs. (These "IDs" are unique identifiers 8777: for each student, defined perhaps by the institutional Registrar.) 8778: 8779: =item tmpput 8780: 8781: Accept and store information in temporary space. 8782: 8783: =item tmpget 8784: 8785: Send along temporarily stored information. 8786: 8787: =item ls 8788: 8789: List part of a user's directory. 8790: 8791: =item pushtable 8792: 8793: Pushes a file in /home/httpd/lonTab directory. Currently limited to: 8794: hosts.tab and domain.tab. The old file is copied to *.tab.backup but 8795: must be restored manually in case of a problem with the new table file. 8796: pushtable requires that the request be encrypted and validated via 8797: ValidateManager. The form of the command is: 8798: enc:pushtable tablename <tablecontents> \n 8799: where pushtable, tablename and <tablecontents> will be encrypted, but \n is a 8800: cleartext newline. 8801: 8802: =item Hanging up (exit or init) 8803: 8804: What to do when a client tells the server that they (the client) 8805: are leaving the network. 8806: 8807: =item unknown command 8808: 8809: If B<lond> is sent an unknown command (not in the list above), 8810: it replys to the client "unknown_cmd". 8811: 8812: 8813: =item UNKNOWN CLIENT 8814: 8815: If the anti-spoofing algorithm cannot verify the client, 8816: the client is rejected (with a "refused" message sent 8817: to the client, and the connection is closed. 8818: 8819: =back 8820: 8821: =head1 PREREQUISITES 8822: 8823: IO::Socket 8824: IO::File 8825: Apache::File 8826: POSIX 8827: Crypt::IDEA 8828: LWP::UserAgent() 8829: GDBM_File 8830: Authen::Krb4 8831: Authen::Krb5 8832: 8833: =head1 COREQUISITES 8834: 8835: =head1 OSNAMES 8836: 8837: linux 8838: 8839: =head1 SCRIPT CATEGORIES 8840: 8841: Server/Process 8842: 8843: =cut 8844: 8845: 8846: =pod 8847: 8848: =head1 LOG MESSAGES 8849: 8850: The messages below can be emitted in the lond log. This log is located 8851: in ~httpd/perl/logs/lond.log Many log messages have HTML encapsulation 8852: to provide coloring if examined from inside a web page. Some do not. 8853: Where color is used, the colors are; Red for sometihhng to get excited 8854: about and to follow up on. Yellow for something to keep an eye on to 8855: be sure it does not get worse, Green,and Blue for informational items. 8856: 8857: In the discussions below, sometimes reference is made to ~httpd 8858: when describing file locations. There isn't really an httpd 8859: user, however there is an httpd directory that gets installed in the 8860: place that user home directories go. On linux, this is usually 8861: (always?) /home/httpd. 8862: 8863: 8864: Some messages are colorless. These are usually (not always) 8865: Green/Blue color level messages. 8866: 8867: =over 2 8868: 8869: =item (Red) LocalConnection rejecting non local: <ip> ne 127.0.0.1 8870: 8871: A local connection negotiation was attempted by 8872: a host whose IP address was not 127.0.0.1. 8873: The socket is closed and the child will exit. 8874: lond has three ways to establish an encyrption 8875: key with a client: 8876: 8877: =over 2 8878: 8879: =item local 8880: 8881: The key is written and read from a file. 8882: This is only valid for connections from localhost. 8883: 8884: =item insecure 8885: 8886: The key is generated by the server and 8887: transmitted to the client. 8888: 8889: =item ssl (secure) 8890: 8891: An ssl connection is negotiated with the client, 8892: the key is generated by the server and sent to the 8893: client across this ssl connection before the 8894: ssl connectionis terminated and clear text 8895: transmission resumes. 8896: 8897: =back 8898: 8899: =item (Red) LocalConnection: caller is insane! init = <init> and type = <type> 8900: 8901: The client is local but has not sent an initialization 8902: string that is the literal "init:local" The connection 8903: is closed and the child exits. 8904: 8905: =item Red CRITICAL Can't get key file <error> 8906: 8907: SSL key negotiation is being attempted but the call to 8908: lonssl::KeyFile failed. This usually means that the 8909: configuration file is not correctly defining or protecting 8910: the directories/files lonCertificateDirectory or 8911: lonnetPrivateKey 8912: <error> is a string that describes the reason that 8913: the key file could not be located. 8914: 8915: =item (Red) CRITICAL Can't get certificates <error> 8916: 8917: SSL key negotiation failed because we were not able to retrives our certificate 8918: or the CA's certificate in the call to lonssl::CertificateFile 8919: <error> is the textual reason this failed. Usual reasons: 8920: 8921: =over 2 8922: 8923: =item Apache config file for loncapa incorrect: 8924: 8925: one of the variables 8926: lonCertificateDirectory, lonnetCertificateAuthority, or lonnetCertificate 8927: undefined or incorrect 8928: 8929: =item Permission error: 8930: 8931: The directory pointed to by lonCertificateDirectory is not readable by lond 8932: 8933: =item Permission error: 8934: 8935: Files in the directory pointed to by lonCertificateDirectory are not readable by lond. 8936: 8937: =item Installation error: 8938: 8939: Either the certificate authority file or the certificate have not 8940: been installed in lonCertificateDirectory. 8941: 8942: =item (Red) CRITICAL SSL Socket promotion failed: <err> 8943: 8944: The promotion of the connection from plaintext to SSL failed 8945: <err> is the reason for the failure. There are two 8946: system calls involved in the promotion (one of which failed), 8947: a dup to produce 8948: a second fd on the raw socket over which the encrypted data 8949: will flow and IO::SOcket::SSL->new_from_fd which creates 8950: the SSL connection on the duped fd. 8951: 8952: =item (Blue) WARNING client did not respond to challenge 8953: 8954: This occurs on an insecure (non SSL) connection negotiation request. 8955: lond generates some number from the time, the PID and sends it to 8956: the client. The client must respond by echoing this information back. 8957: If the client does not do so, that's a violation of the challenge 8958: protocols and the connection will be failed. 8959: 8960: =item (Red) No manager table. Nobody can manage!! 8961: 8962: lond has the concept of privileged hosts that 8963: can perform remote management function such 8964: as update the hosts.tab. The manager hosts 8965: are described in the 8966: ~httpd/lonTabs/managers.tab file. 8967: this message is logged if this file is missing. 8968: 8969: 8970: =item (Green) Registering manager <dnsname> as <cluster_name> with <ipaddress> 8971: 8972: Reports the successful parse and registration 8973: of a specific manager. 8974: 8975: =item Green existing host <clustername:dnsname> 8976: 8977: The manager host is already defined in the hosts.tab 8978: the information in that table, rather than the info in the 8979: manager table will be used to determine the manager's ip. 8980: 8981: =item (Red) Unable to craete <filename> 8982: 8983: lond has been asked to create new versions of an administrative 8984: file (by a manager). When this is done, the new file is created 8985: in a temp file and then renamed into place so that there are always 8986: usable administrative files, even if the update fails. This failure 8987: message means that the temp file could not be created. 8988: The update is abandoned, and the old file is available for use. 8989: 8990: =item (Green) CopyFile from <oldname> to <newname> failed 8991: 8992: In an update of administrative files, the copy of the existing file to a 8993: backup file failed. The installation of the new file may still succeed, 8994: but there will not be a back up file to rever to (this should probably 8995: be yellow). 8996: 8997: =item (Green) Pushfile: backed up <oldname> to <newname> 8998: 8999: See above, the backup of the old administrative file succeeded. 9000: 9001: =item (Red) Pushfile: Unable to install <filename> <reason> 9002: 9003: The new administrative file could not be installed. In this case, 9004: the old administrative file is still in use. 9005: 9006: =item (Green) Installed new < filename>. 9007: 9008: The new administrative file was successfullly installed. 9009: 9010: =item (Red) Reinitializing lond pid=<pid> 9011: 9012: The lonc child process <pid> will be sent a USR2 9013: signal. 9014: 9015: =item (Red) Reinitializing self 9016: 9017: We've been asked to re-read our administrative files,and 9018: are doing so. 9019: 9020: =item (Yellow) error:Invalid process identifier <ident> 9021: 9022: A reinit command was received, but the target part of the 9023: command was not valid. It must be either 9024: 'lond' or 'lonc' but was <ident> 9025: 9026: =item (Green) isValideditCommand checking: Command = <command> Key = <key> newline = <newline> 9027: 9028: Checking to see if lond has been handed a valid edit 9029: command. It is possible the edit command is not valid 9030: in that case there are no log messages to indicate that. 9031: 9032: =item Result of password change for <username> pwchange_success 9033: 9034: The password for <username> was 9035: successfully changed. 9036: 9037: =item Unable to open <user> passwd to change password 9038: 9039: Could not rewrite the 9040: internal password file for a user 9041: 9042: =item Result of password change for <user> : <result> 9043: 9044: A unix password change for <user> was attempted 9045: and the pipe returned <result> 9046: 9047: =item LWP GET: <message> for <fname> (<remoteurl>) 9048: 9049: The lightweight process fetch for a resource failed 9050: with <message> the local filename that should 9051: have existed/been created was <fname> the 9052: corresponding URI: <remoteurl> This is emitted in several 9053: places. 9054: 9055: =item Unable to move <transname> to <destname> 9056: 9057: From fetch_user_file_handler - the user file was replicated but could not 9058: be mv'd to its final location. 9059: 9060: =item Looking for <domain> <username> 9061: 9062: From user_has_session_handler - This should be a Debug call instead 9063: it indicates lond is about to check whether the specified user has a 9064: session active on the specified domain on the local host. 9065: 9066: =item Client <ip> (<name>) hanging up: <input> 9067: 9068: lond has been asked to exit by its client. The <ip> and <name> identify the 9069: client systemand <input> is the full exit command sent to the server. 9070: 9071: =item Red CRITICAL: ABNORMAL EXIT. child <pid> for server <hostname> died through a crass with this error->[<message>]. 9072: 9073: A lond child terminated. NOte that this termination can also occur when the 9074: child receives the QUIT or DIE signals. <pid> is the process id of the child, 9075: <hostname> the host lond is working for, and <message> the reason the child died 9076: to the best of our ability to get it (I would guess that any numeric value 9077: represents and errno value). This is immediately followed by 9078: 9079: =item Famous last words: Catching exception - <log> 9080: 9081: Where log is some recent information about the state of the child. 9082: 9083: =item Red CRITICAL: TIME OUT <pid> 9084: 9085: Some timeout occured for server <pid>. THis is normally a timeout on an LWP 9086: doing an HTTP::GET. 9087: 9088: =item child <pid> died 9089: 9090: The reaper caught a SIGCHILD for the lond child process <pid> 9091: This should be modified to also display the IP of the dying child 9092: $children{$pid} 9093: 9094: =item Unknown child 0 died 9095: A child died but the wait for it returned a pid of zero which really should not 9096: ever happen. 9097: 9098: =item Child <which> - <pid> looks like we missed it's death 9099: 9100: When a sigchild is received, the reaper process checks all children to see if they are 9101: alive. If children are dying quite quickly, the lack of signal queuing can mean 9102: that a signal hearalds the death of more than one child. If so this message indicates 9103: which other one died. <which> is the ip of a dead child 9104: 9105: =item Free socket: <shutdownretval> 9106: 9107: The HUNTSMAN sub was called due to a SIGINT in a child process. The socket is being shutdown. 9108: for whatever reason, <shutdownretval> is printed but in fact shutdown() is not documented 9109: to return anything. This is followed by: 9110: 9111: =item Red CRITICAL: Shutting down 9112: 9113: Just prior to exit. 9114: 9115: =item Free socket: <shutdownretval> 9116: 9117: The HUPSMAN sub was called due to a SIGHUP. all children get killsed, and lond execs itself. 9118: This is followed by: 9119: 9120: =item (Red) CRITICAL: Restarting 9121: 9122: lond is about to exec itself to restart. 9123: 9124: =item (Blue) Updating connections 9125: 9126: (In response to a USR2). All the children (except the one for localhost) 9127: are about to be killed, the hosts tab reread, and Apache reloaded via apachereload. 9128: 9129: =item (Blue) UpdateHosts killing child <pid> for ip <ip> 9130: 9131: Due to USR2 as above. 9132: 9133: =item (Green) keeping child for ip <ip> (pid = <pid>) 9134: 9135: In response to USR2 as above, the child indicated is not being restarted because 9136: it's assumed that we'll always need a child for the localhost. 9137: 9138: 9139: =item Going to check on the children 9140: 9141: Parent is about to check on the health of the child processes. 9142: Note that this is in response to a USR1 sent to the parent lond. 9143: there may be one or more of the next two messages: 9144: 9145: =item <pid> is dead 9146: 9147: A child that we have in our child hash as alive has evidently died. 9148: 9149: =item Child <pid> did not respond 9150: 9151: In the health check the child <pid> did not update/produce a pid_.txt 9152: file when sent it's USR1 signal. That process is killed with a 9 signal, as it's 9153: assumed to be hung in some un-fixable way. 9154: 9155: =item Finished checking children 9156: 9157: Master processs's USR1 processing is cojmplete. 9158: 9159: =item (Red) CRITICAL: ------- Starting ------ 9160: 9161: (There are more '-'s on either side). Lond has forked itself off to 9162: form a new session and is about to start actual initialization. 9163: 9164: =item (Green) Attempting to start child (<client>) 9165: 9166: Started a new child process for <client>. Client is IO::Socket object 9167: connected to the child. This was as a result of a TCP/IP connection from a client. 9168: 9169: =item Unable to determine who caller was, getpeername returned nothing 9170: 9171: In child process initialization. either getpeername returned undef or 9172: a zero sized object was returned. Processing continues, but in my opinion, 9173: this should be cause for the child to exit. 9174: 9175: =item Unable to determine clientip 9176: 9177: In child process initialization. The peer address from getpeername was not defined. 9178: The client address is stored as "Unavailable" and processing continues. 9179: 9180: =item (Yellow) INFO: Connection <ip> <name> connection type = <type> 9181: 9182: In child initialization. A good connectionw as received from <ip>. 9183: 9184: =over 2 9185: 9186: =item <name> 9187: 9188: is the name of the client from hosts.tab. 9189: 9190: =item <type> 9191: 9192: Is the connection type which is either 9193: 9194: =over 2 9195: 9196: =item manager 9197: 9198: The connection is from a manager node, not in hosts.tab 9199: 9200: =item client 9201: 9202: the connection is from a non-manager in the hosts.tab 9203: 9204: =item both 9205: 9206: The connection is from a manager in the hosts.tab. 9207: 9208: =back 9209: 9210: =back 9211: 9212: =item (Blue) Certificates not installed -- trying insecure auth 9213: 9214: One of the certificate file, key file or 9215: certificate authority file could not be found for a client attempting 9216: SSL connection intiation. COnnection will be attemptied in in-secure mode. 9217: (this would be a system with an up to date lond that has not gotten a 9218: certificate from us). 9219: 9220: =item (Green) Successful local authentication 9221: 9222: A local connection successfully negotiated the encryption key. 9223: In this case the IDEA key is in a file (that is hopefully well protected). 9224: 9225: =item (Green) Successful ssl authentication with <client> 9226: 9227: The client (<client> is the peer's name in hosts.tab), has successfully 9228: negotiated an SSL connection with this child process. 9229: 9230: =item (Green) Successful insecure authentication with <client> 9231: 9232: 9233: The client has successfully negotiated an insecure connection withthe child process. 9234: 9235: =item (Yellow) Attempted insecure connection disallowed 9236: 9237: The client attempted and failed to successfully negotiate a successful insecure 9238: connection. This can happen either because the variable londAllowInsecure is false 9239: or undefined, or becuse the child did not successfully echo back the challenge 9240: string. 9241: 9242: 9243: =back 9244: 9245: =back 9246: 9247: 9248: =cut