loncom/auth/lonauth.pm - view

File: [LON-CAPA] / loncom / auth / lonauth.pm
Revision 1.101.10.1: download - view: text, annotated - select for diffs
Wed Sep 15 18:28:45 2010 UTC (13 years, 8 months ago) by raeburn
Branches: GCI_3
Diff to branchpoint 1.101: preferred, unified

- Customization for GCI_3.
  Eliminate case sensitivity in usernames except for existing
  users with usernames which include upper case characters.

1: # The LearningOnline Network 2: # User Authentication Module 3: # 4: # $Id: lonauth.pm,v 1.101.10.1 2010/09/15 18:28:45 raeburn Exp $ 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: # 28: 29: package Apache::lonauth; 30: 31: use strict; 32: use LONCAPA; 33: use Apache::Constants qw(:common); 34: use CGI qw(:standard); 35: use DynaLoader; # for Crypt::DES version 36: use Crypt::DES; 37: use Apache::loncommon(); 38: use Apache::lonnet; 39: use Apache::lonmenu(); 40: use Apache::createaccount; 41: use Fcntl qw(:flock); 42: use Apache::lonlocal; 43: use HTML::Entities; 44: 45: # ------------------------------------------------------------ Successful login 46: sub success { 47: my ($r, $username, $domain, $authhost, $lowerurl, $extra_env, 48: $form) = @_; 49: 50: # ------------------------------------------------------------ Get cookie ready 51: my $cookie = 52: &Apache::loncommon::init_user_environment($r, $username, $domain, 53: $authhost, $form, 54: {'extra_env' => $extra_env,}); 55: 56: my $public=($username eq 'public' && $domain eq 'public'); 57: 58: if ($public or $lowerurl eq 'noredirect') { return $cookie; } 59: 60: # -------------------------------------------------------------------- Log this 61: 62: &Apache::lonnet::log($domain,$username,$authhost, 63: "Login $ENV{'REMOTE_ADDR'}"); 64: 65: # ------------------------------------------------- Check for critical messages 66: 67: my @what=&Apache::lonnet::dump('critical',$domain,$username); 68: if ($what[0]) { 69: if (($what[0] ne 'con_lost') && ($what[0]!~/^error\:/)) { 70: $lowerurl='/adm/email?critical=display'; 71: } 72: } 73: 74: # ------------------------------------------------------------ Get cookie ready 75: $cookie="lonID=$cookie; path=/"; 76: # -------------------------------------------------------- Menu script and info 77: my $destination = $lowerurl; 78: 79: if (defined($form->{role})) { 80: my $envkey = 'user.role.'.$form->{role}; 81: my $now=time; 82: my $then=$env{'user.login.time'}; 83: my $refresh=$env{'user.refresh.time'}; 84: if (exists($env{$envkey})) { 85: my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus); 86: &Apache::lonnet::role_status($envkey,$then,$refresh,$now,\$role,\$where, 87: \$trolecode,\$tstatus,\$tstart,\$tend); 88: if ($tstatus eq 'is') { 89: $destination .= ($destination =~ /\?/) ? '&' : '?'; 90: my $newrole = &HTML::Entities::encode($form->{role},'"<>&'); 91: $destination .= 'selectrole=1&'.$newrole.'=1'; 92: } 93: } 94: } 95: if (defined($form->{symb})) { 96: my $destsymb = $form->{symb}; 97: $destination .= ($destination =~ /\?/) ? '&' : '?'; 98: if ($destsymb =~ /___/) { 99: # FIXME Need to deal with encrypted symbs and urls as needed. 100: my ($map,$resid,$desturl)=split(/___/,$destsymb); 101: unless ($desturl=~/^(adm|uploaded|editupload|public)/) { 102: $desturl = &Apache::lonnet::clutter($desturl); 103: } 104: $desturl = &HTML::Entities::encode($desturl,'"<>&'); 105: $destsymb = &HTML::Entities::encode($destsymb,'"<>&'); 106: $destination .= '&destinationurl='.$desturl. 107: '&destsymb='.$destsymb; 108: } else { 109: $destsymb = &HTML::Entities::encode($destsymb,'"<>&'); 110: $destination .= '&destinationurl='.$destsymb; 111: } 112: } 113: 114: my $windowinfo=&Apache::lonmenu::open($env{'browser.os'}); 115: my $startupremote=&Apache::lonmenu::startupremote($destination); 116: my $remoteinfo=&Apache::lonmenu::load_remote_msg($lowerurl); 117: my $setflags=&Apache::lonmenu::setflags(); 118: my $maincall=&Apache::lonmenu::maincall(); 119: my $brcrum = [{'href' => '', 120: 'text' => 'Successful Login'},]; 121: my $start_page=&Apache::loncommon::start_page('Successful Login', 122: $startupremote, 123: {'no_inline_link' => 1, 124: 'bread_crumbs' => $brcrum,}); 125: my $end_page =&Apache::loncommon::end_page(); 126: 127: my $continuelink; 128: if ($env{'environment.remote'} eq 'off') { 129: $continuelink='<a href="'.$destination.'">'.&mt('Continue').'</a>'; 130: } 131: # ------------------------------------------------- Output for successful login 132: 133: &Apache::loncommon::content_type($r,'text/html'); 134: $r->header_out('Set-cookie' => $cookie); 135: $r->send_http_header; 136: 137: my %lt=&Apache::lonlocal::texthash( 138: 'wel' => 'Welcome', 139: 'mes' => 'Welcome to the Learning<i>Online</i> Network with CAPA. Please wait while your session is being set up.', 140: 'pro' => 'Login problems?', 141: 'log' => 'loginproblems.html', 142: ); 143: $r->print(<<ENDSUCCESS); 144: $start_page 145: $setflags 146: $windowinfo 147: <h1>$lt{'wel'}</h1> 148: $lt{'mes'}<p> 149: <a href="/adm/$lt{'log'}">$lt{'pro'}</a></p> 150: $remoteinfo 151: $maincall 152: $continuelink 153: $end_page 154: ENDSUCCESS 155: } 156: 157: # --------------------------------------------------------------- Failed login! 158: 159: sub failed { 160: my ($r,$message,$form) = @_; 161: my $start_page = &Apache::loncommon::start_page('Unsuccessful Login',undef, 162: {'no_inline_link' => 1,}); 163: my $retry = '/adm/login?username='.$form->{'uname'}. 164: '&domain='.$form->{'udom'}; 165: if (exists($form->{role})) { 166: $retry .= '&role='.$form->{role}; 167: } 168: if (exists($form->{symb})) { 169: $retry .= '&symb='.$form->{symb}; 170: } 171: my $end_page = &Apache::loncommon::end_page(); 172: &Apache::loncommon::content_type($r,'text/html'); 173: $r->send_http_header; 174: $r->print( 175: $start_page 176: .'<h1>'.&mt('Sorry ...').'</h1>' 177: .'<p class="LC_warning">'.&mt($message).'</p>' 178: .'<p>'.&mt('Please [_1]log in again[_2].','<a href="'.$retry.'">','</a>') 179: .'</p>' 180: .'<p><a href="/adm/loginproblems.html">'.&mt('Login problems?').'</a></p>' 181: .$end_page 182: ); 183: } 184: 185: # ------------------------------------------------------------------ Rerouting! 186: 187: sub reroute { 188: my ($r) = @_; 189: &Apache::loncommon::content_type($r,'text/html'); 190: $r->send_http_header; 191: my $msg='<h1>'.&mt('Sorry ...').'</h1>' 192: .&mt('Please [_1]log in again[_2].'); 193: &Apache::loncommon::simple_error_page($r,'Rerouting',$msg); 194: } 195: 196: # ---------------------------------------------------------------- Main handler 197: 198: sub handler { 199: my $r = shift; 200: my $form; 201: # Are we re-routing? 202: if (-e '/home/httpd/html/lon-status/reroute.txt') { 203: &reroute($r); 204: return OK; 205: } 206: 207: &Apache::lonlocal::get_language_handle($r); 208: 209: # -------------------------------- Prevent users from attempting to login twice 210: my $handle = &Apache::lonnet::check_for_valid_session($r); 211: if ($handle ne '') { 212: # Indeed, a valid token is found 213: &Apache::loncommon::content_type($r,'text/html'); 214: $r->send_http_header; 215: my $start_page = 216: &Apache::loncommon::start_page('Already logged in'); 217: my $end_page = 218: &Apache::loncommon::end_page(); 219: $r->print( 220: $start_page 221: .'<h1>'.&mt('You are already logged in!').'</h1>' 222: .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].' 223: ,'<a href="/adm/roles">','</a>','<a href="/adm/logout">','</a>') 224: .'</p>' 225: .'<p><a href="/adm/loginproblems.html">'.&mt('Login problems?').'</a></p>' 226: .$end_page 227: ); 228: return OK; 229: } 230: 231: # ---------------------------------------------------- No valid token, continue 232: 233: 234: my $buffer; 235: if ($r->header_in('Content-length') > 0) { 236: $r->read($buffer,$r->header_in('Content-length'),0); 237: } 238: my %form; 239: foreach my $pair (split(/&/,$buffer)) { 240: my ($name,$value) = split(/=/,$pair); 241: $value =~ tr/+/ /; 242: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg; 243: $form{$name}=$value; 244: } 245: 246: if ((!$form{'uname'}) || (!$form{'upass0'}) || (!$form{'udom'})) { 247: &failed($r,'Username, password and domain need to be specified.', 248: \%form); 249: return OK; 250: } 251: 252: # split user logging in and "su"-user 253: 254: ($form{'uname'},$form{'suname'})=split(/\:/,$form{'uname'}); 255: $form{'uname'} = &LONCAPA::clean_username($form{'uname'}); 256: $form{'suname'}= &LONCAPA::clean_username($form{'suname'}); 257: $form{'udom'} = &LONCAPA::clean_domain( $form{'udom'}); 258: 259: my $role = $r->dir_config('lonRole'); 260: my $domain = $r->dir_config('lonDefDomain'); 261: my $prodir = $r->dir_config('lonUsersDir'); 262: my $contact_name = &mt('LON-CAPA helpdesk'); 263: 264: # ---------------------------------------- Get the information from login token 265: 266: my $tmpinfo=Apache::lonnet::reply('tmpget:'.$form{'logtoken'}, 267: $form{'serverid'}); 268: 269: if (($tmpinfo=~/^error/) || ($tmpinfo eq 'con_lost')) { 270: &failed($r,'Information needed to verify your login information is missing, inaccessible or expired.',\%form); 271: return OK; 272: } else { 273: my $reply = &Apache::lonnet::reply('tmpdel:'.$form{'logtoken'}, 274: $form{'serverid'}); 275: if ( $reply ne 'ok' ) { 276: &failed($r,'Session could not be opened.',\%form); 277: &Apache::lonnet::logthis("ERROR got a reply of $reply when trying to contact ". $form{'serverid'}." to get login token"); 278: return OK; 279: } 280: } 281: 282: if (!&Apache::lonnet::domain($form{'udom'})) { 283: &failed($r,'The domain you provided is not a valid LON-CAPA domain.',\%form); 284: return OK; 285: } 286: 287: my ($key,$firsturl,$rolestr,$symbstr)=split(/&/,$tmpinfo); 288: if ($rolestr) { 289: $rolestr = &unescape($rolestr); 290: } 291: if ($symbstr) { 292: $symbstr= &unescape($symbstr); 293: } 294: if ($rolestr =~ /^role=/) { 295: (undef,$form{'role'}) = split('=',$rolestr); 296: } 297: if ($symbstr =~ /^symb=/) { 298: (undef,$form{'symb'}) = split('=',$symbstr); 299: } 300: 301: my $keybin=pack("H16",$key); 302: 303: my $cipher; 304: if ($Crypt::DES::VERSION>=2.03) { 305: $cipher=new Crypt::DES $keybin; 306: } 307: else { 308: $cipher=new DES $keybin; 309: } 310: my $upass=''; 311: for (my $i=0;$i<=2;$i++) { 312: my $chunk= 313: $cipher->decrypt(unpack("a8",pack("H16",substr($form{'upass'.$i},0,16)))); 314: 315: $chunk.= 316: $cipher->decrypt(unpack("a8",pack("H16",substr($form{'upass'.$i},16,16)))); 317: 318: $chunk=substr($chunk,1,ord(substr($chunk,0,1))); 319: $upass.=$chunk; 320: } 321: 322: # ---------------------------------------------------------------- Authenticate 323: my @cancreate; 324: my %domconfig = &Apache::lonnet::get_dom('configuration',['usercreation'],$form{'udom'}); 325: if (ref($domconfig{'usercreation'}) eq 'HASH') { 326: if (ref($domconfig{'usercreation'}{'cancreate'}) eq 'HASH') { 327: if (ref($domconfig{'usercreation'}{'cancreate'}{'selfcreate'}) eq 'ARRAY') { 328: @cancreate = @{$domconfig{'usercreation'}{'cancreate'}{'selfcreate'}}; 329: } elsif (($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne 'none') && 330: ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne '')) { 331: @cancreate = ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'}); 332: } 333: } 334: } 335: my $defaultauth; 336: if (grep(/^login$/,@cancreate)) { 337: $defaultauth = 1; 338: } 339: my $uname = $form{'uname'}; 340: my $authhost=Apache::lonnet::authenticate($uname,$upass, 341: $form{'udom'},$defaultauth); 342: 343: # --------------------------------------------------------------------- Failed? 344: 345: if ($authhost eq 'no_host') { 346: my $lc_uname = lc($form{'uname'}); 347: if ($uname eq $lc_uname) { 348: &failed($r,'Username and/or password could not be authenticated.', 349: \%form); 350: return OK; 351: } else { 352: $authhost=Apache::lonnet::authenticate($lc_uname,$upass, 353: $form{'udom'},$defaultauth); 354: if ($authhost eq 'no_host') { 355: &failed($r,'Username (in lower case) and/or password could not be authenticated.', 356: \%form); 357: return OK; 358: } elsif ($authhost eq 'no_account_on_host') { 359: &create_account($r,\%form,\@cancreate,$lc_uname,$contact_name); 360: return OK; 361: } else { 362: $form{'uname'} = $lc_uname; 363: } 364: } 365: } elsif ($authhost eq 'no_account_on_host') { 366: &create_account($r,\%form,\@cancreate,$uname); 367: return OK; 368: } 369: 370: if (($firsturl eq '') || 371: ($firsturl=~/^\/adm\/(logout|remote)/)) { 372: $firsturl='/adm/roles'; 373: } 374: # --------------------------------- Are we attempting to login as somebody else? 375: if ($form{'suname'}) { 376: # ------------ see if the original user has enough privileges to pull this stunt 377: if (&Apache::lonnet::privileged($form{'uname'},$form{'udom'})) { 378: # ---------------------------------------------------- see if the su-user exists 379: unless (&Apache::lonnet::homeserver($form{'suname'},$form{'udom'}) 380: eq 'no_host') { 381: &Apache::lonnet::logthis(&Apache::lonnet::homeserver($form{'suname'},$form{'udom'})); 382: # ------------------------------ see if the su-user is not too highly privileged 383: unless (&Apache::lonnet::privileged($form{'suname'},$form{'udom'})) { 384: # -------------------------------------------------------- actually switch users 385: &Apache::lonnet::logperm('User '.$form{'uname'}.' at '.$form{'udom'}. 386: ' logging in as '.$form{'suname'}); 387: $form{'uname'}=$form{'suname'}; 388: } else { 389: &Apache::lonnet::logthis('Attempted switch user to privileged user'); 390: } 391: } 392: } else { 393: &Apache::lonnet::logthis('Non-privileged user attempting switch user'); 394: } 395: } 396: 397: if ($r->dir_config("lonBalancer") eq 'yes') { 398: &success($r,$form{'uname'},$form{'udom'},$authhost,'noredirect',undef, 399: \%form); 400: $r->internal_redirect('/adm/switchserver'); 401: } else { 402: &success($r,$form{'uname'},$form{'udom'},$authhost,$firsturl,undef, 403: \%form); 404: } 405: return OK; 406: } 407: 408: sub create_account { 409: my ($r,$form,$cancreate,$uname,$contact_name) = @_; 410: return unless((ref($form) eq 'HASH') && (ref($cancreate) eq 'ARRAY')); 411: my %domconfig = 412: &Apache::lonnet::get_dom('configuration',['usercreation'],$form->{'udom'}); 413: if (grep(/^login$/,@{$cancreate})) { 414: my $start_page = 415: &Apache::loncommon::start_page('Create a user account in LON-CAPA', 416: '',{'no_inline_link' => 1,}); 417: my $domdesc = &Apache::lonnet::domain($form->{'udom'},'description'); 418: my $lonhost = $r->dir_config('lonHostID'); 419: my $origmail = $Apache::lonnet::perlvar{'lonSupportEMail'}; 420: my $contacts = 421: &Apache::loncommon::build_recipient_list(undef,'helpdeskmail', 422: $form->{'udom'},$origmail); 423: my ($contact_email) = split(',',$contacts); 424: my $output = 425: &Apache::createaccount::username_check($uname,$form->{'udom'}, 426: $domdesc,'',$lonhost, 427: $contact_email,$contact_name); 428: &Apache::loncommon::content_type($r,'text/html'); 429: $r->send_http_header; 430: &Apache::createaccount::print_header($r,$start_page); 431: $r->print('<h3>'.&mt('Account creation').'</h3>'. 432: &mt('Although your username and password were authenticated, you do not currently have a LON-CAPA account at this institution.').'<br />'. 433: $output.&Apache::loncommon::end_page()); 434: } else { 435: &failed($r,'Although your username and password were authenticated, you do not currently have a LON-CAPA account in this domain, and you are not permitted to create one.',$form); 436: } 437: return; 438: } 439: 440: 1; 441: __END__ 442: 443: