Annotation of loncom/auth/lonauth.pm, revision 1.114

1.1       albertel    1: # The LearningOnline Network
                      2: # User Authentication Module
1.27      www         3: #
1.114   ! raeburn     4: # $Id: lonauth.pm,v 1.113 2011/06/10 01:21:36 raeburn 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: #
1.1       albertel   28: 
                     29: package Apache::lonauth;
                     30: 
1.18      albertel   31: use strict;
1.78      albertel   32: use LONCAPA;
1.1       albertel   33: use Apache::Constants qw(:common);
                     34: use CGI qw(:standard);
1.26      harris41   35: use DynaLoader; # for Crypt::DES version
1.8       www        36: use Crypt::DES;
1.45      matthew    37: use Apache::loncommon();
1.66      albertel   38: use Apache::lonnet;
1.12      www        39: use Apache::lonmenu();
1.90      raeburn    40: use Apache::createaccount;
1.18      albertel   41: use Fcntl qw(:flock);
1.56      www        42: use Apache::lonlocal;
1.109     raeburn    43: use Apache::File ();
1.101     raeburn    44: use HTML::Entities;
1.85      albertel   45:  
1.1       albertel   46: # ------------------------------------------------------------ Successful login
1.85      albertel   47: sub success {
                     48:     my ($r, $username, $domain, $authhost, $lowerurl, $extra_env,
                     49: 	$form) = @_;
1.1       albertel   50: 
1.85      albertel   51: # ------------------------------------------------------------ Get cookie ready
                     52:     my $cookie =
                     53: 	&Apache::loncommon::init_user_environment($r, $username, $domain,
                     54: 						  $authhost, $form,
1.86      albertel   55: 						  {'extra_env' => $extra_env,});
1.4       www        56: 
1.69      albertel   57:     my $public=($username eq 'public' && $domain eq 'public');
                     58: 
1.85      albertel   59:     if ($public or $lowerurl eq 'noredirect') { return $cookie; }
1.78      albertel   60: 
1.7       www        61: # -------------------------------------------------------------------- Log this
                     62: 
                     63:     &Apache::lonnet::log($domain,$username,$authhost,
                     64:                          "Login $ENV{'REMOTE_ADDR'}");
1.4       www        65: 
1.14      www        66: # ------------------------------------------------- Check for critical messages
                     67: 
1.21      www        68:     my @what=&Apache::lonnet::dump('critical',$domain,$username);
1.14      www        69:     if ($what[0]) {
1.22      www        70: 	if (($what[0] ne 'con_lost') && ($what[0]!~/^error\:/)) {
1.21      www        71: 	    $lowerurl='/adm/email?critical=display';
1.14      www        72:         }
                     73:     }
                     74: 
1.5       www        75: # ------------------------------------------------------------ Get cookie ready
1.1       albertel   76:     $cookie="lonID=$cookie; path=/";
1.12      www        77: # -------------------------------------------------------- Menu script and info
1.100     raeburn    78:     my $destination = $lowerurl;
                     79: 
                     80:     if (defined($form->{role})) {
                     81:         my $envkey = 'user.role.'.$form->{role};
                     82:         my $now=time;
                     83:         my $then=$env{'user.login.time'};
                     84:         my $refresh=$env{'user.refresh.time'};
1.111     raeburn    85:         my $update=$env{'user.update.time'};
                     86:         if (!$update) {
                     87:             $update = $then;
                     88:         }
1.100     raeburn    89:         if (exists($env{$envkey})) {
                     90:             my ($role,$where,$trolecode,$tstart,$tend,$tremark,$tstatus);
1.111     raeburn    91:             &Apache::lonnet::role_status($envkey,$update,$refresh,$now,\$role,\$where,
1.100     raeburn    92:                                          \$trolecode,\$tstatus,\$tstart,\$tend);
                     93:             if ($tstatus eq 'is') {
1.101     raeburn    94:                 $destination  .= ($destination =~ /\?/) ? '&' : '?';
                     95:                 my $newrole = &HTML::Entities::encode($form->{role},'"<>&');
                     96:                 $destination .= 'selectrole=1&'.$newrole.'=1';
1.100     raeburn    97:             }
                     98:         }
                     99:     }
1.101     raeburn   100:     if (defined($form->{symb})) {
                    101:         my $destsymb = $form->{symb};
                    102:         $destination  .= ($destination =~ /\?/) ? '&' : '?';
                    103:         if ($destsymb =~ /___/) {
                    104:             # FIXME Need to deal with encrypted symbs and urls as needed.
                    105:             my ($map,$resid,$desturl)=split(/___/,$destsymb);
                    106:             unless ($desturl=~/^(adm|uploaded|editupload|public)/) {
                    107:                 $desturl = &Apache::lonnet::clutter($desturl);
                    108:             }
                    109:             $desturl = &HTML::Entities::encode($desturl,'"<>&');
                    110:             $destsymb = &HTML::Entities::encode($destsymb,'"<>&');
                    111:             $destination .= '&destinationurl='.$desturl.
                    112:                             '&destsymb='.$destsymb;
                    113:         } else {
                    114:             $destsymb = &HTML::Entities::encode($destsymb,'"<>&');
                    115:             $destination .= '&destinationurl='.$destsymb;
                    116:         }
                    117:     }
1.111     raeburn   118:     if ($destination =~ m{^/adm/roles}) {
                    119:         $destination  .= ($destination =~ /\?/) ? '&' : '?';
                    120:         $destination .= 'source=login';
                    121:     }
1.100     raeburn   122: 
1.102     droeschl  123:     my $windowinfo = Apache::lonhtmlcommon::scripttag('self.name="loncapaclient";');
                    124:     my $header = '<meta HTTP-EQUIV="Refresh" CONTENT="0; url='.$destination.'" />';
1.99      bisitz    125:     my $brcrum = [{'href' => '',
                    126:                    'text' => 'Successful Login'},];
1.74      albertel  127:     my $start_page=&Apache::loncommon::start_page('Successful Login',
1.102     droeschl  128:                                                   $header,
1.104     droeschl  129:                                                   {'bread_crumbs' => $brcrum,});
1.74      albertel  130:     my $end_page  =&Apache::loncommon::end_page();
                    131: 
1.102     droeschl  132: 	my $continuelink='<a href="'.$destination.'">'.&mt('Continue').'</a>';
1.5       www       133: # ------------------------------------------------- Output for successful login
                    134: 
1.74      albertel  135:     &Apache::loncommon::content_type($r,'text/html');
                    136:     $r->header_out('Set-cookie' => $cookie);
                    137:     $r->send_http_header;
1.1       albertel  138: 
1.58      www       139:     my %lt=&Apache::lonlocal::texthash(
                    140: 				       'wel' => 'Welcome',
1.92      bisitz    141: 				       'pro' => 'Login problems?',
1.58      www       142: 				       'log' => 'loginproblems.html',
                    143: 				       );
1.112     raeburn   144:     my $welcome = &mt('Welcome to the Learning[_1]Online[_2] Network with CAPA. Please wait while your session is being set up.','<i>','</i>'); 
1.1       albertel  145:     $r->print(<<ENDSUCCESS);
1.74      albertel  146: $start_page
1.19      www       147: $windowinfo
1.58      www       148: <h1>$lt{'wel'}</h1>
1.112     raeburn   149: $welcome<p>
1.92      bisitz    150: <a href="/adm/$lt{'log'}">$lt{'pro'}</a></p>
1.64      albertel  151: $continuelink
1.74      albertel  152: $end_page
1.1       albertel  153: ENDSUCCESS
                    154: }
                    155: 
                    156: # --------------------------------------------------------------- Failed login!
                    157: 
                    158: sub failed {
1.85      albertel  159:     my ($r,$message,$form) = @_;
1.104     droeschl  160:     my $start_page = &Apache::loncommon::start_page('Unsuccessful Login',undef);
1.100     raeburn   161:     my $retry = '/adm/login?username='.$form->{'uname'}.
                    162:                 '&domain='.$form->{'udom'};
                    163:     if (exists($form->{role})) {
                    164:         $retry .= '&role='.$form->{role};
                    165:     }
                    166:     if (exists($form->{symb})) {
                    167:         $retry .= '&symb='.$form->{symb};
                    168:     }
1.74      albertel  169:     my $end_page   = &Apache::loncommon::end_page();
                    170:     &Apache::loncommon::content_type($r,'text/html');
                    171:     $r->send_http_header;
1.92      bisitz    172:     $r->print(
                    173:        $start_page
                    174:       .'<h1>'.&mt('Sorry ...').'</h1>'
1.95      bisitz    175:       .'<p class="LC_warning">'.&mt($message).'</p>'
1.100     raeburn   176:       .'<p>'.&mt('Please [_1]log in again[_2].','<a href="'.$retry.'">','</a>')
1.92      bisitz    177:       .'</p>'
                    178:       .'<p><a href="/adm/loginproblems.html">'.&mt('Login problems?').'</a></p>'
                    179:       .$end_page
                    180:     );
                    181:  }
1.60      www       182: 
1.55      www       183: # ------------------------------------------------------------------ Rerouting!
                    184: 
                    185: sub reroute {
1.74      albertel  186:     my ($r) = @_;
                    187:     &Apache::loncommon::content_type($r,'text/html');
                    188:     $r->send_http_header;
1.92      bisitz    189:     my $msg='<h1>'.&mt('Sorry ...').'</h1>'
                    190:            .&mt('Please [_1]log in again[_2].');
1.74      albertel  191:     &Apache::loncommon::simple_error_page($r,'Rerouting',$msg);
1.55      www       192: }
                    193: 
1.1       albertel  194: # ---------------------------------------------------------------- Main handler
                    195: 
                    196: sub handler {
                    197:     my $r = shift;
1.85      albertel  198:     my $form;
1.55      www       199: # Are we re-routing?
                    200:     if (-e '/home/httpd/html/lon-status/reroute.txt') {
                    201: 	&reroute($r);
                    202: 	return OK;
                    203:     }
1.56      www       204: 
1.57      www       205:     &Apache::lonlocal::get_language_handle($r);
1.1       albertel  206: 
1.59      www       207: # -------------------------------- Prevent users from attempting to login twice
1.89      albertel  208:     my $handle = &Apache::lonnet::check_for_valid_session($r);
                    209:     if ($handle ne '') {
1.103     raeburn   210:         my $lonidsdir=$r->dir_config('lonIDsDir');
                    211:         if ($handle=~/^publicuser\_/) {
                    212: # For "public user" - remove it, we apparently really want to login
                    213:             unlink($r->dir_config('lonIDsDir')."/$handle.id");
                    214:         } else {
1.59      www       215: # Indeed, a valid token is found
1.103     raeburn   216:             &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
                    217: 	    &Apache::loncommon::content_type($r,'text/html');
                    218: 	    $r->send_http_header;
                    219: 	    my $start_page = 
                    220: 	        &Apache::loncommon::start_page('Already logged in');
                    221: 	    my $end_page = 
                    222: 	        &Apache::loncommon::end_page();
1.105     raeburn   223:             my $dest = '/adm/roles';
                    224:             if ($env{'form.firsturl'} ne '') {
                    225:                 $dest = $env{'form.firsturl'};
                    226:             }
1.103     raeburn   227:             $r->print(
                    228:                $start_page
                    229:               .'<h1>'.&mt('You are already logged in!').'</h1>'
                    230:               .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].'
1.105     raeburn   231:                     ,'<a href="'.$dest.'">','</a>','<a href="/adm/logout">','</a>')
1.103     raeburn   232:               .'</p>'
                    233:               .$end_page
                    234:             );
                    235:             return OK;
                    236:         }
1.59      www       237:     }
                    238: 
                    239: # ---------------------------------------------------- No valid token, continue
                    240: 
                    241: 
1.1       albertel  242:     my $buffer;
1.84      albertel  243:     if ($r->header_in('Content-length') > 0) {
                    244: 	$r->read($buffer,$r->header_in('Content-length'),0);
                    245:     }
1.85      albertel  246:     my %form;
                    247:     foreach my $pair (split(/&/,$buffer)) {
                    248:        my ($name,$value) = split(/=/,$pair);
1.7       www       249:        $value =~ tr/+/ /;
                    250:        $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
1.85      albertel  251:        $form{$name}=$value;
1.1       albertel  252:     } 
                    253: 
1.85      albertel  254:     if ((!$form{'uname'}) || (!$form{'upass0'}) || (!$form{'udom'})) {
                    255: 	&failed($r,'Username, password and domain need to be specified.',
                    256: 		\%form);
1.1       albertel  257:         return OK;
                    258:     }
1.61      www       259: 
                    260: # split user logging in and "su"-user
                    261: 
1.85      albertel  262:     ($form{'uname'},$form{'suname'})=split(/\:/,$form{'uname'});
1.87      albertel  263:     $form{'uname'} = &LONCAPA::clean_username($form{'uname'});
                    264:     $form{'suname'}= &LONCAPA::clean_username($form{'suname'});
                    265:     $form{'udom'}  = &LONCAPA::clean_domain(  $form{'udom'});
1.1       albertel  266: 
                    267:     my $role   = $r->dir_config('lonRole');
                    268:     my $domain = $r->dir_config('lonDefDomain');
                    269:     my $prodir = $r->dir_config('lonUsersDir');
1.93      raeburn   270:     my $contact_name = &mt('LON-CAPA helpdesk');
1.1       albertel  271: 
1.8       www       272: # ---------------------------------------- Get the information from login token
                    273: 
1.85      albertel  274:     my $tmpinfo=Apache::lonnet::reply('tmpget:'.$form{'logtoken'},
                    275:                                       $form{'serverid'});
1.8       www       276: 
1.114   ! raeburn   277:     if (($tmpinfo=~/^error/) || ($tmpinfo eq 'con_lost') || 
        !           278:         ($tmpinfo eq 'no_such_host')) {
1.85      albertel  279: 	&failed($r,'Information needed to verify your login information is missing, inaccessible or expired.',\%form);
1.8       www       280:         return OK;
1.44      www       281:     } else {
1.85      albertel  282: 	my $reply = &Apache::lonnet::reply('tmpdel:'.$form{'logtoken'},
                    283: 					   $form{'serverid'});
1.77      albertel  284:         if ( $reply ne 'ok' ) {
1.85      albertel  285:             &failed($r,'Session could not be opened.',\%form);
                    286: 	    &Apache::lonnet::logthis("ERROR got a reply of $reply when trying to contact ". $form{'serverid'}." to get login token");
1.77      albertel  287: 	    return OK;
1.44      www       288: 	}
1.8       www       289:     }
1.100     raeburn   290: 
1.93      raeburn   291:     if (!&Apache::lonnet::domain($form{'udom'})) {
                    292:         &failed($r,'The domain you provided is not a valid LON-CAPA domain.',\%form);
                    293:         return OK;
                    294:     }
1.100     raeburn   295: 
                    296:     my ($key,$firsturl,$rolestr,$symbstr)=split(/&/,$tmpinfo);
                    297:     if ($rolestr) {
                    298:         $rolestr = &unescape($rolestr);
                    299:     }
                    300:     if ($symbstr) {
                    301:         $symbstr= &unescape($symbstr);
                    302:     }
                    303:     if ($rolestr =~ /^role=/) {
                    304:         (undef,$form{'role'}) = split('=',$rolestr);
                    305:     }
                    306:     if ($symbstr =~ /^symb=/) { 
                    307:         (undef,$form{'symb'}) = split('=',$symbstr);
                    308:     }
1.8       www       309: 
                    310:     my $keybin=pack("H16",$key);
                    311: 
1.26      harris41  312:     my $cipher;
                    313:     if ($Crypt::DES::VERSION>=2.03) {
                    314: 	$cipher=new Crypt::DES $keybin;
                    315:     }
                    316:     else {
                    317: 	$cipher=new DES $keybin;
                    318:     }
1.67      www       319:     my $upass='';
                    320:     for (my $i=0;$i<=2;$i++) {
                    321: 	my $chunk=
1.85      albertel  322: 	    $cipher->decrypt(unpack("a8",pack("H16",substr($form{'upass'.$i},0,16))));
1.8       www       323: 
1.67      www       324: 	$chunk.=
1.85      albertel  325: 	    $cipher->decrypt(unpack("a8",pack("H16",substr($form{'upass'.$i},16,16))));
1.8       www       326: 
1.67      www       327: 	$chunk=substr($chunk,1,ord(substr($chunk,0,1)));
                    328: 	$upass.=$chunk;
                    329:     }
1.8       www       330: 
1.1       albertel  331: # ---------------------------------------------------------------- Authenticate
1.91      raeburn   332:     my @cancreate;
1.90      raeburn   333:     my %domconfig = &Apache::lonnet::get_dom('configuration',['usercreation'],$form{'udom'});
                    334:     if (ref($domconfig{'usercreation'}) eq 'HASH') {
                    335:         if (ref($domconfig{'usercreation'}{'cancreate'}) eq 'HASH') {
1.91      raeburn   336:             if (ref($domconfig{'usercreation'}{'cancreate'}{'selfcreate'}) eq 'ARRAY') {
                    337:                 @cancreate = @{$domconfig{'usercreation'}{'cancreate'}{'selfcreate'}};
                    338:             } elsif (($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne 'none') && 
                    339:                      ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne '')) {
                    340:                 @cancreate = ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'});
1.90      raeburn   341:             }
                    342:         }
                    343:     }
                    344:     my $defaultauth;
1.91      raeburn   345:     if (grep(/^login$/,@cancreate)) {
1.90      raeburn   346:         $defaultauth = 1;
                    347:     }
1.105     raeburn   348:     my $clientcancheckhost = 1;
1.90      raeburn   349:     my $authhost=Apache::lonnet::authenticate($form{'uname'},$upass,
1.105     raeburn   350:                                               $form{'udom'},$defaultauth,
                    351:                                               $clientcancheckhost);
1.1       albertel  352:     
                    353: # --------------------------------------------------------------------- Failed?
                    354: 
                    355:     if ($authhost eq 'no_host') {
1.85      albertel  356: 	&failed($r,'Username and/or password could not be authenticated.',
                    357: 		\%form);
1.1       albertel  358:         return OK;
1.90      raeburn   359:     } elsif ($authhost eq 'no_account_on_host') {
                    360:         my %domconfig = 
                    361:             &Apache::lonnet::get_dom('configuration',['usercreation'],$form{'udom'});
1.91      raeburn   362:         if (grep(/^login$/,@cancreate)) {
1.105     raeburn   363:             my $domdesc = &Apache::lonnet::domain($form{'udom'},'description');
1.110     raeburn   364:             unless (&check_can_host($r,\%form,'no_account_on_host',$domdesc)) {
                    365:                 return OK;
                    366:             }
1.90      raeburn   367:             my $start_page = 
1.104     droeschl  368:                 &Apache::loncommon::start_page('Create a user account in LON-CAPA');
1.93      raeburn   369:             my $lonhost = $r->dir_config('lonHostID');
                    370:             my $origmail = $Apache::lonnet::perlvar{'lonSupportEMail'};
                    371:             my $contacts = 
                    372:                 &Apache::loncommon::build_recipient_list(undef,'helpdeskmail',
                    373:                                                         $form{'udom'},$origmail);
                    374:             my ($contact_email) = split(',',$contacts); 
1.94      raeburn   375:             my $output = &Apache::createaccount::username_check($form{'uname'}, 
                    376:                                                                 $form{'udom'},$domdesc,'',
                    377:                                                                 $lonhost,$contact_email,$contact_name);
1.90      raeburn   378:             &Apache::loncommon::content_type($r,'text/html');
                    379:             $r->send_http_header;
                    380:             &Apache::createaccount::print_header($r,$start_page);
1.94      raeburn   381:             $r->print('<h3>'.&mt('Account creation').'</h3>'.
                    382:                       &mt('Although your username and password were authenticated, you do not currently have a LON-CAPA account at this institution.').'<br />'.
                    383:                       $output.&Apache::loncommon::end_page());
1.90      raeburn   384:             return OK;
                    385:         } else {
                    386:             &failed($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);
                    387:             return OK;
                    388:         }
1.1       albertel  389:     }
                    390: 
1.59      www       391:     if (($firsturl eq '') || 
                    392: 	($firsturl=~/^\/adm\/(logout|remote)/)) {
1.24      www       393: 	$firsturl='/adm/roles';
1.7       www       394:     }
1.61      www       395: # --------------------------------- Are we attempting to login as somebody else?
1.85      albertel  396:     if ($form{'suname'}) {
1.61      www       397: # ------------ see if the original user has enough privileges to pull this stunt
1.85      albertel  398: 	if (&Apache::lonnet::privileged($form{'uname'},$form{'udom'})) {
1.61      www       399: # ---------------------------------------------------- see if the su-user exists
1.85      albertel  400: 	    unless (&Apache::lonnet::homeserver($form{'suname'},$form{'udom'})
1.61      www       401: 		eq 'no_host') {
1.85      albertel  402: 		&Apache::lonnet::logthis(&Apache::lonnet::homeserver($form{'suname'},$form{'udom'}));
1.61      www       403: # ------------------------------ see if the su-user is not too highly privileged
1.85      albertel  404: 		unless (&Apache::lonnet::privileged($form{'suname'},$form{'udom'})) {
1.61      www       405: # -------------------------------------------------------- actually switch users
1.85      albertel  406: 		    &Apache::lonnet::logperm('User '.$form{'uname'}.' at '.$form{'udom'}.
                    407: 			' logging in as '.$form{'suname'});
                    408: 		    $form{'uname'}=$form{'suname'};
1.61      www       409: 		} else {
                    410: 		    &Apache::lonnet::logthis('Attempted switch user to privileged user');
                    411: 		}
                    412: 	    }
                    413: 	} else {
                    414: 	    &Apache::lonnet::logthis('Non-privileged user attempting switch user');
                    415: 	}
                    416:     }
1.85      albertel  417: 
1.110     raeburn   418:     unless (&check_can_host($r,\%form,$authhost)) {
                    419:         return OK;
                    420:     }
1.105     raeburn   421: 
1.81      albertel  422:     if ($r->dir_config("lonBalancer") eq 'yes') {
1.85      albertel  423: 	&success($r,$form{'uname'},$form{'udom'},$authhost,'noredirect',undef,
                    424: 		 \%form);
1.113     raeburn   425:         my $otherserver = &Apache::lonnet::spareserver(30000,undef,1,$form{'udom'});
1.109     raeburn   426: 	$r->internal_redirect('/adm/switchserver?otherserver='.$otherserver.'&origurl='.$firsturl);
1.110     raeburn   427:         return OK;
1.81      albertel  428:     } else {
1.109     raeburn   429: # ------------------------------------------------------- Do the load balancing
                    430: 
                    431: # ---------------------------------------------------------- Determine own load
                    432:         my $loadlim = $r->dir_config('lonLoadLim');
                    433:         my $loadavg;
                    434:         {
                    435:             my $loadfile=Apache::File->new('/proc/loadavg');
                    436:             $loadavg=<$loadfile>;
                    437:         }
                    438:         $loadavg =~ s/\s.*//g;
                    439:         my $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim);
                    440:         my $userloadpercent=&Apache::lonnet::userload();
                    441: 
                    442: # ---------------------------------------------------------- Are we overloaded?
                    443:         if ((($userloadpercent>100.0)||($loadpercent>100.0))) {
                    444:             my $unloaded=Apache::lonnet::spareserver($loadpercent,$userloadpercent,1,$form{'udom'});
                    445:             if ($unloaded) {
                    446:                 &success($r,$form{'uname'},$form{'udom'},$authhost,'noredirect',
                    447:                          undef,\%form);
                    448:                 $r->internal_redirect('/adm/switchserver?otherserver='.$unloaded.'&origurl='.$firsturl);
1.110     raeburn   449:                 return OK;
1.109     raeburn   450:             }
                    451:         }
                    452:         &success($r,$form{'uname'},$form{'udom'},$authhost,$firsturl,undef,
                    453:                  \%form);
1.110     raeburn   454:         return OK;
1.81      albertel  455:     }
1.1       albertel  456: }
                    457: 
1.105     raeburn   458: sub check_can_host {
                    459:     my ($r,$form,$authhost,$domdesc) = @_;
                    460:     return unless (ref($form) eq 'HASH');
                    461:     my $canhost = 1;
1.106     raeburn   462:     my $lonhost = $r->dir_config('lonHostID');
1.105     raeburn   463:     my $udom = $form->{'udom'};
1.108     raeburn   464:     my @intdoms;
                    465:     my $internet_names = &Apache::lonnet::get_internet_names($lonhost);
                    466:     if (ref($internet_names) eq 'ARRAY') {
                    467:         @intdoms = @{$internet_names};
                    468:     }
1.106     raeburn   469:     my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
                    470:     my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
                    471:     unless ($uint_dom ne '' && grep(/^\Q$uint_dom\E$/,@intdoms)) {
                    472:         my $machine_dom = &Apache::lonnet::host_domain($lonhost);
                    473:         my $hostname = &Apache::lonnet::hostname($lonhost);
                    474:         my $serverhomeID = &Apache::lonnet::get_server_homeID($hostname);
                    475:         my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID);
                    476:         my %defdomdefaults = &Apache::lonnet::get_domain_defaults($serverhomedom);
1.105     raeburn   477:         my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
                    478:         my $loncaparev;
                    479:         if ($authhost eq 'no_account_on_host') {
1.106     raeburn   480:             $loncaparev = &Apache::lonnet::get_server_loncaparev($machine_dom);
1.105     raeburn   481:         } else {
1.106     raeburn   482:             $loncaparev = &Apache::lonnet::get_server_loncaparev($machine_dom,$lonhost);
1.105     raeburn   483:         }
1.106     raeburn   484:         $canhost = &Apache::lonnet::can_host_session($udom,$lonhost,$loncaparev,
                    485:                                                      $udomdefaults{'remotesessions'},
                    486:                                                      $defdomdefaults{'hostedsessions'});
1.105     raeburn   487:     }
                    488:     unless ($canhost) {
                    489:         if ($authhost eq 'no_account_on_host') {
1.107     raeburn   490:             my ($login_host,$hostname) = &Apache::lonnet::choose_server($udom);
1.105     raeburn   491:             &Apache::loncommon::content_type($r,'text/html');
                    492:             $r->send_http_header;
                    493:             if ($login_host ne '') {
                    494:                 my $protocol = $Apache::lonnet::protocol{$login_host};
                    495:                 $protocol = 'http' if ($protocol ne 'https');
                    496:                 my $newurl = $protocol.'://'.$hostname.'/adm/createaccount';
                    497:                 $r->print(&Apache::loncommon::start_page('Create a user account in LON-CAPA').
                    498:                           '<h3>'.&mt('Account creation').'</h3>'.
                    499:                           &mt('You do not currently have a LON-CAPA account at this institution.').'<br />'.
                    500:                           '<p>'.&mt('You will be able to create one by logging into a LON-CAPA server within the [_1] domain.',$domdesc).'</p>'.
                    501:                           '<p>'.&mt('[_1]Log in[_2]','<a href="'.$newurl.'">','</a>').
                    502:                           &Apache::loncommon::end_page());
                    503:             } else {
                    504:                 $r->print(&Apache::loncommon::start_page('Access to LON-CAPA unavailable').
                    505:                           '<h3>'.&mt('Account creation unavailable').'</h3>'.
                    506:                           &mt('You do not currently have a LON-CAPA account at this institution.').'<br />'.
                    507:                           '<p>'.&mt('Currently a LON-CAPA server is not available within the [_1] domain for you to log-in to, to create an account.',$domdesc).'</p>'.
                    508:                           &Apache::loncommon::end_page());
                    509:             }
                    510:         } else {
                    511:             &success($r,$form->{'uname'},$udom,$authhost,'noredirect',undef,
                    512:                      $form);
1.107     raeburn   513:             my ($otherserver) = &Apache::lonnet::choose_server($udom);
1.105     raeburn   514:             $r->internal_redirect('/adm/switchserver?otherserver='.$otherserver);
                    515:         }
                    516:     }
1.110     raeburn   517:     return $canhost;
1.105     raeburn   518: }
                    519: 
1.1       albertel  520: 1;
                    521: __END__
1.7       www       522: 
                    523: 

FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>