Annotation of loncom/auth/lonauth.pm, revision 1.53

1.1       albertel    1: # The LearningOnline Network
                      2: # User Authentication Module
1.27      www         3: #
1.53    ! www         4: # $Id: lonauth.pm,v 1.52 2003/06/06 02:24:49 www Exp $
1.27      www         5: #
                      6: # Copyright Michigan State University Board of Trustees
                      7: #
                      8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
                      9: #
                     10: # LON-CAPA is free software; you can redistribute it and/or modify
                     11: # it under the terms of the GNU General Public License as published by
                     12: # the Free Software Foundation; either version 2 of the License, or
                     13: # (at your option) any later version.
                     14: #
                     15: # LON-CAPA is distributed in the hope that it will be useful,
                     16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
                     17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
                     18: # GNU General Public License for more details.
                     19: #
                     20: # You should have received a copy of the GNU General Public License
                     21: # along with LON-CAPA; if not, write to the Free Software
                     22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
                     23: #
                     24: # /home/httpd/html/adm/gpl.txt
                     25: #
                     26: # http://www.lon-capa.org/
                     27: #
1.2       www        28: # 5/21/99,5/22,5/25,5/26,5/27,5/29,6/2,6/11,6/14,6/15
1.4       www        29: # 16/11,12/16,
1.9       www        30: # 1/14,2/24,2/28,2/29,3/7,5/29,5/30,5/31,6/1,6/5,6/29,
1.19      www        31: # 7/1,7/10,10/2,10/5,10/9,10/26,10/30,11/10,
                     32: # 05/28,05/29 Gerd Kortemeyer
1.22      www        33: # 07/28,08/03 Gerd Kortemeyer
1.24      www        34: # 8/20 Gerd Kortemeyer
1.1       albertel   35: 
                     36: package Apache::lonauth;
                     37: 
1.18      albertel   38: use strict;
1.1       albertel   39: use Apache::Constants qw(:common);
                     40: use Apache::File;
                     41: use CGI qw(:standard);
                     42: use CGI::Cookie();
1.26      harris41   43: use DynaLoader; # for Crypt::DES version
1.8       www        44: use Crypt::DES;
1.45      matthew    45: use Apache::loncommon();
1.1       albertel   46: use Apache::lonnet();
1.12      www        47: use Apache::lonmenu();
1.18      albertel   48: use Fcntl qw(:flock);
1.37      www        49: 
                     50: my %FORM;
                     51: 
1.1       albertel   52: # ------------------------------------------------------------ Successful login
                     53: 
                     54: sub success {
1.6       www        55:     my ($r, $username, $domain, $authhost,$lowerurl) = @_;
1.1       albertel   56:     my $lonids=$r->dir_config('lonIDsDir');
1.4       www        57: 
                     58: # See if old ID present, if so, remove
1.17      www        59: 
                     60:     my $filename;
                     61:     opendir(DIR,$lonids);
                     62:     while ($filename=readdir(DIR)) {
                     63:        if ($filename=~/^$username\_\d+\_$domain\_$authhost\.id$/) {
                     64: 	  unlink($lonids.'/'.$filename);
                     65:        }
1.4       www        66:     }
1.17      www        67:     closedir(DIR);
1.4       www        68: 
                     69: # Give them a new cookie
                     70: 
1.17      www        71:     my $cookie;
1.5       www        72:     my $now=time;
                     73:     $cookie="$username\_$now\_$domain\_$authhost";
                     74: 
                     75: # Initialize roles
                     76: 
                     77:     my $userroles=Apache::lonnet::rolesinit($domain,$username,$authhost);
                     78: 
1.7       www        79: # ------------------------------------ Check browser type and MathML capability
1.6       www        80: 
1.45      matthew    81:     my ($httpbrowser,$clientbrowser,$clientversion,$clientmathml,
                     82:         $clientunicode,$clientos) = &Apache::loncommon::decode_user_agent($r);
1.6       www        83: 
1.40      www        84: # -------------------------------------- Any accessibility options to remember?
                     85:     if (($FORM{'interface'}) && ($FORM{'remember'} eq 'true')) {
1.41      albertel   86: 	foreach ('imagesuppress','appletsuppress',
                     87: 		 'embedsuppress','fontenhance','blackwhite') {
                     88: 	    if ($FORM{$_} eq 'true') {
                     89: 		&Apache::lonnet::put('environment',{$_ => 'on'},
                     90: 				     $domain,$username);
                     91: 	    } else {
                     92: 		&Apache::lonnet::del('environment',[$_],$domain,$username);
                     93: 	    }
                     94: 	}
                     95:     }
1.11      www        96: # ------------------------------------------------------------- Get environment
                     97: 
1.32      albertel   98:     my $userenv;
                     99:     my %userenv=Apache::lonnet::dump('environment',$domain,$username);
                    100:     my ($tmp) = keys(%userenv);
                    101:     if ($tmp !~ /^(con_lost|error|no_such_host)/i) {
                    102: 	foreach my $key (keys(%userenv)) {
                    103: 	    $userenv.="environment.$key=$userenv{$key}\n";
                    104: 	}
1.11      www       105:     }
1.38      www       106:     if (($userenv{'interface'}) && (!$FORM{'interface'})) {
                    107: 	$FORM{'interface'}=$userenv{'interface'};
                    108:     }
1.47      www       109:     $ENV{'environment.remote'}=$userenv{'remote'};
1.7       www       110: # --------------------------------------------------------- Write first profile
1.5       www       111: 
1.41      albertel  112:     {
                    113: 	my $idf=Apache::File->new(">$lonids/$cookie.id");
                    114: 	unless (flock($idf,LOCK_EX)) {
                    115: 	    &Apache::lonnet::logthis("<font color=blue>WARNING: ".
                    116: 			   'Could not obtain exclusive lock in lonauth: '.$!);
                    117: 	    $idf->close();
                    118: 	    return 'error: '.$!;
                    119: 	}
                    120: 	if ($userenv ne '') { print $idf "$userenv\n"; }
                    121: 	print $idf "user.name=$username\n";
                    122: 	print $idf "user.domain=$domain\n";
                    123: 	print $idf "user.home=$authhost\n";
                    124: 	print $idf "browser.type=$clientbrowser\n";
                    125: 	print $idf "browser.version=$clientversion\n";
                    126: 	print $idf "browser.mathml=$clientmathml\n";
                    127: 	print $idf "browser.unicode=$clientunicode\n";
                    128: 	print $idf "browser.os=$clientos\n";
1.53    ! www       129:         if ($FORM{'localpath'}) {
        !           130:            print $idf "browser.localpath=$FORM{'localpath'}\n";
        !           131:            print $idf "browser.localres=$FORM{'localres'}\n";
        !           132:         }
1.41      albertel  133: 	print $idf "request.course.fn=\n";
                    134: 	print $idf "request.course.uri=\n";
                    135: 	print $idf "request.course.sec=\n";
                    136: 	print $idf "request.role=cm\n";
1.48      www       137:         print $idf "request.role.adv=$ENV{'user.adv'}\n";
1.42      www       138: 	print $idf "request.host=$ENV{'REMOTE_ADDR'}\n";
1.41      albertel  139: 	if ($FORM{'interface'}) {
                    140: 	    $FORM{'interface'}=~s/\W//gs;
                    141: 	    print $idf "browser.interface=$FORM{'interface'}\n";
                    142: 	    $ENV{'browser.interface'}=$FORM{'interface'};
                    143: 	    foreach ('imagesuppress','appletsuppress',
                    144: 		     'embedsuppress','fontenhance','blackwhite') {
                    145: 		if (($FORM{$_} eq 'true') ||
                    146: 		    ($userenv{$_} eq 'on')) {
                    147: 		    print $idf "browser.$_=on\n";
                    148: 		}
1.18      albertel  149: 	    }
1.41      albertel  150: 	}
                    151: 	if ($userroles ne '') { print $idf "$userroles"; }
                    152: 	$idf->close();
                    153:     }
                    154:     $ENV{'request.role'}='cm';
1.48      www       155:     $ENV{'request.role.adv'}=$ENV{'user.adv'};
1.41      albertel  156:     $ENV{'browser.type'}=$clientbrowser;
1.7       www       157: # -------------------------------------------------------------------- Log this
                    158: 
                    159:     &Apache::lonnet::log($domain,$username,$authhost,
                    160:                          "Login $ENV{'REMOTE_ADDR'}");
1.4       www       161: 
1.14      www       162: # ------------------------------------------------- Check for critical messages
                    163: 
1.21      www       164:     my @what=&Apache::lonnet::dump('critical',$domain,$username);
1.14      www       165:     if ($what[0]) {
1.22      www       166: 	if (($what[0] ne 'con_lost') && ($what[0]!~/^error\:/)) {
1.21      www       167: 	    $lowerurl='/adm/email?critical=display';
1.14      www       168:         }
                    169:     }
                    170: 
1.5       www       171: # ------------------------------------------------------------ Get cookie ready
                    172: 
1.1       albertel  173:     $cookie="lonID=$cookie; path=/";
1.12      www       174: # -------------------------------------------------------- Menu script and info
1.31      www       175:     my $windowinfo=&Apache::lonmenu::open($clientos);
1.35      www       176:     my $startupremote=&Apache::lonmenu::startupremote($lowerurl);
                    177:     my $setflags=&Apache::lonmenu::setflags();
                    178:     my $maincall=&Apache::lonmenu::maincall();
1.52      www       179:     my $bodytag=&Apache::loncommon::bodytag('Successful Login');
1.5       www       180: # ------------------------------------------------- Output for successful login
                    181: 
1.1       albertel  182:     $r->send_cgi_header(<<ENDHEADER);
                    183: Content-type: text/html
                    184: Set-cookie: $cookie
                    185: 
                    186: ENDHEADER
                    187:     $r->print(<<ENDSUCCESS);
                    188: <html>
                    189: <head>
1.4       www       190: <title>Successful Login to the LearningOnline Network with CAPA</title>
1.35      www       191: $startupremote
1.1       albertel  192: </head>
1.43      www       193: $bodytag
1.35      www       194: $setflags
1.19      www       195: $windowinfo
1.6       www       196: <h1>Welcome!</h1>
1.34      www       197: Welcome to the Learning<i>Online</i> Network with CAPA.
                    198: Please wait while your session
                    199: is being set up.<p>
                    200: <a href="/adm/loginproblems.html">Problems?</a></p>
1.35      www       201: $maincall
1.6       www       202: </body>
1.1       albertel  203: </html>
                    204: ENDSUCCESS
                    205: }
                    206: 
                    207: # --------------------------------------------------------------- Failed login!
                    208: 
                    209: sub failed {
                    210:     my ($r,$message) = @_;
1.52      www       211:     my $bodytag=&Apache::loncommon::bodytag('Unsuccessful Login');
1.1       albertel  212:     $r->send_cgi_header(<<ENDFHEADER);
                    213: Content-type: text/html
                    214: 
                    215: ENDFHEADER
                    216:     $r->print(<<ENDFAILED);
                    217: <html>
                    218: <head>
1.4       www       219: <title>Unsuccessful Login to the LearningOnline Network with CAPA</title>
1.1       albertel  220: </head>
                    221: <html>
1.43      www       222: $bodytag
1.1       albertel  223: <h1>Sorry ...</h1>
1.43      www       224: <p><b>$message</b></p>
1.46      matthew   225: <p>Please <a href="/adm/login?username=$FORM{'uname'}&domain=$FORM{'udom'}">log in again</a>.</p>
1.43      www       226: <p>
                    227: <a href="/adm/loginproblems.html">Problems?</a></p>
1.1       albertel  228: </body>
                    229: </html>
                    230: ENDFAILED
                    231: }
                    232: 
                    233: # ---------------------------------------------------------------- Main handler
                    234: 
                    235: sub handler {
                    236:     my $r = shift;
                    237: 
                    238:     my $buffer;
1.49      albertel  239:     $r->read($buffer,$r->header_in('Content-length'),0);
1.1       albertel  240:     my @pairs=split(/&/,$buffer);
1.37      www       241:     my $pair; my $name; my $value;
                    242:     undef %FORM;
                    243:     %FORM=();
1.1       albertel  244:     foreach $pair (@pairs) {
                    245:        ($name,$value) = split(/=/,$pair);
1.7       www       246:        $value =~ tr/+/ /;
                    247:        $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
1.1       albertel  248:        $FORM{$name}=$value;
                    249:     } 
                    250: 
                    251:     if ((!$FORM{'uname'}) || (!$FORM{'upass'}) || (!$FORM{'udom'})) {
1.43      www       252: 	failed($r,'Username, password and domain need to be specified.');
1.1       albertel  253:         return OK;
                    254:     }
                    255:     $FORM{'uname'} =~ s/\W//g;
                    256:     $FORM{'udom'}  =~ s/\W//g;
                    257: 
                    258:     my $role   = $r->dir_config('lonRole');
                    259:     my $domain = $r->dir_config('lonDefDomain');
                    260:     my $prodir = $r->dir_config('lonUsersDir');
                    261: 
1.8       www       262: # ---------------------------------------- Get the information from login token
                    263: 
                    264:     my $tmpinfo=Apache::lonnet::reply('tmpget:'.$FORM{'logtoken'},
                    265:                                       $FORM{'serverid'});
                    266: 
                    267:     if (($tmpinfo=~/^error/) || ($tmpinfo eq 'con_lost')) {
1.43      www       268: 	failed($r,'Information needed to verify your login information is missing, inaccessible or expired.');
1.8       www       269:         return OK;
1.44      www       270:     } else {
                    271:         unless (&Apache::lonnet::reply('tmpdel:'.$FORM{'logtoken'},
                    272:                                          $FORM{'serverid'}) eq 'ok') {
                    273:             &failed($r,'Session could not be opened.');
                    274: 	}
1.8       www       275:     }
1.9       www       276:     my ($key,$firsturl)=split(/&/,$tmpinfo);
1.8       www       277: 
                    278:     my $keybin=pack("H16",$key);
                    279: 
1.26      harris41  280:     my $cipher;
                    281:     if ($Crypt::DES::VERSION>=2.03) {
                    282: 	$cipher=new Crypt::DES $keybin;
                    283:     }
                    284:     else {
                    285: 	$cipher=new DES $keybin;
                    286:     }
1.8       www       287: 
                    288:     my $upass=$cipher->decrypt(
                    289:        unpack("a8",pack("H16",substr($FORM{'upass'},0,16))));
                    290: 
                    291:     $upass.=$cipher->decrypt(
                    292:        unpack("a8",pack("H16",substr($FORM{'upass'},16,16))));
                    293: 
                    294:     $upass=substr($upass,1,ord(substr($upass,0,1)));
                    295: 
1.1       albertel  296: # ---------------------------------------------------------------- Authenticate
                    297:     my $authhost=Apache::lonnet::authenticate($FORM{'uname'},
1.8       www       298:                                               $upass,
1.1       albertel  299:                                               $FORM{'udom'});
                    300:     
                    301: # --------------------------------------------------------------------- Failed?
                    302: 
                    303:     if ($authhost eq 'no_host') {
1.43      www       304: 	failed($r,'Username and/or password could not be authenticated.');
1.1       albertel  305:         return OK;
                    306:     }
                    307: 
1.13      www       308:     if (($firsturl eq '') || ($firsturl eq '/adm/logout')) {
1.24      www       309: 	$firsturl='/adm/roles';
1.7       www       310:     }
1.1       albertel  311: 
1.8       www       312:     success($r,$FORM{'uname'},$FORM{'udom'},$authhost,$firsturl);
1.1       albertel  313:     return OK;
                    314: }
                    315: 
                    316: 1;
                    317: __END__
1.7       www       318: 
                    319: 

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