Annotation of loncom/auth/lonauth.pm, revision 1.121.2.2
1.1 albertel 1: # The LearningOnline Network
2: # User Authentication Module
1.27 www 3: #
1.121.2.2! raeburn 4: # $Id: lonauth.pm,v 1.121.2.1 2012/08/06 23:14:04 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;
1.119 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:
1.121.2.1 raeburn 123: my $windowinfo=&Apache::lonmenu::open($env{'browser.os'});
124: my $startupremote=&Apache::lonmenu::startupremote($destination);
125: my $remoteinfo=&Apache::lonmenu::load_remote_msg($lowerurl);
126: my $setflags=&Apache::lonmenu::setflags();
127: my $maincall=&Apache::lonmenu::maincall();
1.99 bisitz 128: my $brcrum = [{'href' => '',
129: 'text' => 'Successful Login'},];
1.74 albertel 130: my $start_page=&Apache::loncommon::start_page('Successful Login',
1.121.2.1 raeburn 131: $startupremote,
132: {'no_inline_link' => 1,
133: 'bread_crumbs' => $brcrum,});
1.74 albertel 134: my $end_page =&Apache::loncommon::end_page();
135:
1.121.2.1 raeburn 136: my $continuelink;
137: if ($env{'environment.remote'} eq 'off') {
138: $continuelink='<a href="'.$destination.'">'.&mt('Continue').'</a>';
139: }
1.5 www 140: # ------------------------------------------------- Output for successful login
141:
1.74 albertel 142: &Apache::loncommon::content_type($r,'text/html');
143: $r->header_out('Set-cookie' => $cookie);
144: $r->send_http_header;
1.1 albertel 145:
1.58 www 146: my %lt=&Apache::lonlocal::texthash(
147: 'wel' => 'Welcome',
1.92 bisitz 148: 'pro' => 'Login problems?',
1.58 www 149: );
1.121.2.2! raeburn 150: my $loginhelp = &loginhelpdisplay($domain);
! 151: if ($loginhelp) {
! 152: $loginhelp = '<p><a href="'.$loginhelp.'">'.$lt{'pro'}.'</a></p>';
! 153: }
! 154:
1.112 raeburn 155: 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 156: $r->print(<<ENDSUCCESS);
1.74 albertel 157: $start_page
1.121.2.1 raeburn 158: $setflags
1.19 www 159: $windowinfo
1.58 www 160: <h1>$lt{'wel'}</h1>
1.121.2.2! raeburn 161: $welcome
! 162: $loginhelp
1.121.2.1 raeburn 163: $remoteinfo
164: $maincall
1.64 albertel 165: $continuelink
1.74 albertel 166: $end_page
1.1 albertel 167: ENDSUCCESS
168: }
169:
170: # --------------------------------------------------------------- Failed login!
171:
172: sub failed {
1.85 albertel 173: my ($r,$message,$form) = @_;
1.104 droeschl 174: my $start_page = &Apache::loncommon::start_page('Unsuccessful Login',undef);
1.100 raeburn 175: my $retry = '/adm/login?username='.$form->{'uname'}.
176: '&domain='.$form->{'udom'};
177: if (exists($form->{role})) {
178: $retry .= '&role='.$form->{role};
179: }
180: if (exists($form->{symb})) {
181: $retry .= '&symb='.$form->{symb};
182: }
1.74 albertel 183: my $end_page = &Apache::loncommon::end_page();
184: &Apache::loncommon::content_type($r,'text/html');
185: $r->send_http_header;
1.121.2.2! raeburn 186: my $loginhelp = &loginhelpdisplay($form->{'udom'});
! 187: if ($loginhelp) {
! 188: $loginhelp = '<p><a href="'.$loginhelp.'">'.&mt('Login problems?').'</a></p>';
! 189: }
! 190:
1.92 bisitz 191: $r->print(
192: $start_page
193: .'<h1>'.&mt('Sorry ...').'</h1>'
1.95 bisitz 194: .'<p class="LC_warning">'.&mt($message).'</p>'
1.100 raeburn 195: .'<p>'.&mt('Please [_1]log in again[_2].','<a href="'.$retry.'">','</a>')
1.92 bisitz 196: .'</p>'
1.121.2.2! raeburn 197: .$loginhelp
1.92 bisitz 198: .$end_page
199: );
200: }
1.60 www 201:
1.55 www 202: # ------------------------------------------------------------------ Rerouting!
203:
204: sub reroute {
1.74 albertel 205: my ($r) = @_;
206: &Apache::loncommon::content_type($r,'text/html');
207: $r->send_http_header;
1.92 bisitz 208: my $msg='<h1>'.&mt('Sorry ...').'</h1>'
209: .&mt('Please [_1]log in again[_2].');
1.74 albertel 210: &Apache::loncommon::simple_error_page($r,'Rerouting',$msg);
1.55 www 211: }
212:
1.1 albertel 213: # ---------------------------------------------------------------- Main handler
214:
215: sub handler {
216: my $r = shift;
1.120 raeburn 217: my $londocroot = $r->dir_config('lonDocRoot');
1.85 albertel 218: my $form;
1.55 www 219: # Are we re-routing?
1.120 raeburn 220: if (-e "$londocroot/lon-status/reroute.txt") {
1.55 www 221: &reroute($r);
222: return OK;
223: }
1.56 www 224:
1.57 www 225: &Apache::lonlocal::get_language_handle($r);
1.1 albertel 226:
1.59 www 227: # -------------------------------- Prevent users from attempting to login twice
1.89 albertel 228: my $handle = &Apache::lonnet::check_for_valid_session($r);
229: if ($handle ne '') {
1.103 raeburn 230: my $lonidsdir=$r->dir_config('lonIDsDir');
231: if ($handle=~/^publicuser\_/) {
232: # For "public user" - remove it, we apparently really want to login
233: unlink($r->dir_config('lonIDsDir')."/$handle.id");
234: } else {
1.59 www 235: # Indeed, a valid token is found
1.103 raeburn 236: &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
237: &Apache::loncommon::content_type($r,'text/html');
238: $r->send_http_header;
239: my $start_page =
240: &Apache::loncommon::start_page('Already logged in');
241: my $end_page =
242: &Apache::loncommon::end_page();
1.105 raeburn 243: my $dest = '/adm/roles';
244: if ($env{'form.firsturl'} ne '') {
245: $dest = $env{'form.firsturl'};
246: }
1.103 raeburn 247: $r->print(
248: $start_page
1.121 golterma 249: .'<p class="LC_warning>"'.&mt('You are already logged in!').'</p>'
1.103 raeburn 250: .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].'
1.105 raeburn 251: ,'<a href="'.$dest.'">','</a>','<a href="/adm/logout">','</a>')
1.103 raeburn 252: .'</p>'
253: .$end_page
254: );
255: return OK;
256: }
1.59 www 257: }
258:
259: # ---------------------------------------------------- No valid token, continue
260:
261:
1.1 albertel 262: my $buffer;
1.84 albertel 263: if ($r->header_in('Content-length') > 0) {
264: $r->read($buffer,$r->header_in('Content-length'),0);
265: }
1.85 albertel 266: my %form;
267: foreach my $pair (split(/&/,$buffer)) {
268: my ($name,$value) = split(/=/,$pair);
1.7 www 269: $value =~ tr/+/ /;
270: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
1.85 albertel 271: $form{$name}=$value;
1.1 albertel 272: }
273:
1.85 albertel 274: if ((!$form{'uname'}) || (!$form{'upass0'}) || (!$form{'udom'})) {
275: &failed($r,'Username, password and domain need to be specified.',
276: \%form);
1.1 albertel 277: return OK;
278: }
1.61 www 279:
280: # split user logging in and "su"-user
281:
1.85 albertel 282: ($form{'uname'},$form{'suname'})=split(/\:/,$form{'uname'});
1.87 albertel 283: $form{'uname'} = &LONCAPA::clean_username($form{'uname'});
284: $form{'suname'}= &LONCAPA::clean_username($form{'suname'});
285: $form{'udom'} = &LONCAPA::clean_domain( $form{'udom'});
1.1 albertel 286:
287: my $role = $r->dir_config('lonRole');
288: my $domain = $r->dir_config('lonDefDomain');
289: my $prodir = $r->dir_config('lonUsersDir');
1.93 raeburn 290: my $contact_name = &mt('LON-CAPA helpdesk');
1.1 albertel 291:
1.8 www 292: # ---------------------------------------- Get the information from login token
293:
1.85 albertel 294: my $tmpinfo=Apache::lonnet::reply('tmpget:'.$form{'logtoken'},
295: $form{'serverid'});
1.8 www 296:
1.114 raeburn 297: if (($tmpinfo=~/^error/) || ($tmpinfo eq 'con_lost') ||
298: ($tmpinfo eq 'no_such_host')) {
1.85 albertel 299: &failed($r,'Information needed to verify your login information is missing, inaccessible or expired.',\%form);
1.8 www 300: return OK;
1.44 www 301: } else {
1.85 albertel 302: my $reply = &Apache::lonnet::reply('tmpdel:'.$form{'logtoken'},
303: $form{'serverid'});
1.77 albertel 304: if ( $reply ne 'ok' ) {
1.85 albertel 305: &failed($r,'Session could not be opened.',\%form);
306: &Apache::lonnet::logthis("ERROR got a reply of $reply when trying to contact ". $form{'serverid'}." to get login token");
1.77 albertel 307: return OK;
1.44 www 308: }
1.8 www 309: }
1.100 raeburn 310:
1.93 raeburn 311: if (!&Apache::lonnet::domain($form{'udom'})) {
312: &failed($r,'The domain you provided is not a valid LON-CAPA domain.',\%form);
313: return OK;
314: }
1.100 raeburn 315:
316: my ($key,$firsturl,$rolestr,$symbstr)=split(/&/,$tmpinfo);
317: if ($rolestr) {
318: $rolestr = &unescape($rolestr);
319: }
320: if ($symbstr) {
321: $symbstr= &unescape($symbstr);
322: }
323: if ($rolestr =~ /^role=/) {
324: (undef,$form{'role'}) = split('=',$rolestr);
325: }
326: if ($symbstr =~ /^symb=/) {
327: (undef,$form{'symb'}) = split('=',$symbstr);
328: }
1.8 www 329:
330: my $keybin=pack("H16",$key);
331:
1.26 harris41 332: my $cipher;
333: if ($Crypt::DES::VERSION>=2.03) {
334: $cipher=new Crypt::DES $keybin;
335: }
336: else {
337: $cipher=new DES $keybin;
338: }
1.67 www 339: my $upass='';
340: for (my $i=0;$i<=2;$i++) {
341: my $chunk=
1.85 albertel 342: $cipher->decrypt(unpack("a8",pack("H16",substr($form{'upass'.$i},0,16))));
1.8 www 343:
1.67 www 344: $chunk.=
1.85 albertel 345: $cipher->decrypt(unpack("a8",pack("H16",substr($form{'upass'.$i},16,16))));
1.8 www 346:
1.67 www 347: $chunk=substr($chunk,1,ord(substr($chunk,0,1)));
348: $upass.=$chunk;
349: }
1.8 www 350:
1.1 albertel 351: # ---------------------------------------------------------------- Authenticate
1.119 raeburn 352:
1.90 raeburn 353: my %domconfig = &Apache::lonnet::get_dom('configuration',['usercreation'],$form{'udom'});
1.119 raeburn 354: my ($cancreate,$statustocreate) =
355: &Apache::createaccount::get_creation_controls($form{'udom'},$domconfig{'usercreation'});
356: my $defaultauth;
357: if (ref($cancreate) eq 'ARRAY') {
358: if (grep(/^login$/,@{$cancreate})) {
359: $defaultauth = 1;
1.90 raeburn 360: }
361: }
1.105 raeburn 362: my $clientcancheckhost = 1;
1.90 raeburn 363: my $authhost=Apache::lonnet::authenticate($form{'uname'},$upass,
1.105 raeburn 364: $form{'udom'},$defaultauth,
365: $clientcancheckhost);
1.1 albertel 366:
367: # --------------------------------------------------------------------- Failed?
368:
369: if ($authhost eq 'no_host') {
1.85 albertel 370: &failed($r,'Username and/or password could not be authenticated.',
371: \%form);
1.1 albertel 372: return OK;
1.90 raeburn 373: } elsif ($authhost eq 'no_account_on_host') {
1.119 raeburn 374: if ($defaultauth) {
1.105 raeburn 375: my $domdesc = &Apache::lonnet::domain($form{'udom'},'description');
1.110 raeburn 376: unless (&check_can_host($r,\%form,'no_account_on_host',$domdesc)) {
377: return OK;
378: }
1.90 raeburn 379: my $start_page =
1.121.2.1 raeburn 380: &Apache::loncommon::start_page('Create a user account in LON-CAPA',
381: '',{'no_inline_link' => 1,});
1.93 raeburn 382: my $lonhost = $r->dir_config('lonHostID');
383: my $origmail = $Apache::lonnet::perlvar{'lonSupportEMail'};
384: my $contacts =
385: &Apache::loncommon::build_recipient_list(undef,'helpdeskmail',
386: $form{'udom'},$origmail);
387: my ($contact_email) = split(',',$contacts);
1.119 raeburn 388: my $output =
389: &Apache::createaccount::username_check($form{'uname'},$form{'udom'},
390: $domdesc,'',$lonhost,
391: $contact_email,$contact_name,
392: undef,$statustocreate);
1.90 raeburn 393: &Apache::loncommon::content_type($r,'text/html');
394: $r->send_http_header;
395: &Apache::createaccount::print_header($r,$start_page);
1.94 raeburn 396: $r->print('<h3>'.&mt('Account creation').'</h3>'.
397: &mt('Although your username and password were authenticated, you do not currently have a LON-CAPA account at this institution.').'<br />'.
398: $output.&Apache::loncommon::end_page());
1.90 raeburn 399: return OK;
400: } else {
401: &failed($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);
402: return OK;
403: }
1.1 albertel 404: }
405:
1.59 www 406: if (($firsturl eq '') ||
407: ($firsturl=~/^\/adm\/(logout|remote)/)) {
1.24 www 408: $firsturl='/adm/roles';
1.7 www 409: }
1.61 www 410: # --------------------------------- Are we attempting to login as somebody else?
1.85 albertel 411: if ($form{'suname'}) {
1.61 www 412: # ------------ see if the original user has enough privileges to pull this stunt
1.85 albertel 413: if (&Apache::lonnet::privileged($form{'uname'},$form{'udom'})) {
1.61 www 414: # ---------------------------------------------------- see if the su-user exists
1.85 albertel 415: unless (&Apache::lonnet::homeserver($form{'suname'},$form{'udom'})
1.61 www 416: eq 'no_host') {
1.85 albertel 417: &Apache::lonnet::logthis(&Apache::lonnet::homeserver($form{'suname'},$form{'udom'}));
1.61 www 418: # ------------------------------ see if the su-user is not too highly privileged
1.85 albertel 419: unless (&Apache::lonnet::privileged($form{'suname'},$form{'udom'})) {
1.61 www 420: # -------------------------------------------------------- actually switch users
1.85 albertel 421: &Apache::lonnet::logperm('User '.$form{'uname'}.' at '.$form{'udom'}.
422: ' logging in as '.$form{'suname'});
423: $form{'uname'}=$form{'suname'};
1.61 www 424: } else {
425: &Apache::lonnet::logthis('Attempted switch user to privileged user');
426: }
427: }
428: } else {
429: &Apache::lonnet::logthis('Non-privileged user attempting switch user');
430: }
431: }
1.85 albertel 432:
1.117 raeburn 433: my ($is_balancer,$otherserver) =
434: &Apache::lonnet::check_loadbalancing($form{'uname'},$form{'udom'});
435:
436: if ($is_balancer) {
1.115 raeburn 437: if (!$otherserver) {
1.116 raeburn 438: ($otherserver) = &Apache::lonnet::choose_server($form{'udom'});
1.115 raeburn 439: }
440: if ($otherserver) {
441: &success($r,$form{'uname'},$form{'udom'},$authhost,'noredirect',undef,
442: \%form);
443: $r->internal_redirect('/adm/switchserver?otherserver='.$otherserver.'&origurl='.$firsturl);
444: } else {
445: $r->print(&noswitch());
446: }
1.110 raeburn 447: return OK;
1.81 albertel 448: } else {
1.115 raeburn 449: if (!&check_can_host($r,\%form,$authhost)) {
1.118 raeburn 450: my ($otherserver) = &Apache::lonnet::choose_server($form{'udom'});
1.115 raeburn 451: if ($otherserver) {
452: &success($r,$form{'uname'},$form{'udom'},$authhost,'noredirect',undef,
453: \%form);
454: $r->internal_redirect('/adm/switchserver?otherserver='.$otherserver.'&origurl='.$firsturl);
455: } else {
456: $r->print(&noswitch());
457: }
458: return OK;
459: }
460:
1.109 raeburn 461: # ------------------------------------------------------- Do the load balancing
462:
463: # ---------------------------------------------------------- Determine own load
464: my $loadlim = $r->dir_config('lonLoadLim');
465: my $loadavg;
466: {
467: my $loadfile=Apache::File->new('/proc/loadavg');
468: $loadavg=<$loadfile>;
469: }
470: $loadavg =~ s/\s.*//g;
471: my $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim);
472: my $userloadpercent=&Apache::lonnet::userload();
473:
474: # ---------------------------------------------------------- Are we overloaded?
475: if ((($userloadpercent>100.0)||($loadpercent>100.0))) {
476: my $unloaded=Apache::lonnet::spareserver($loadpercent,$userloadpercent,1,$form{'udom'});
1.115 raeburn 477: if (!$unloaded) {
1.118 raeburn 478: ($unloaded) = &Apache::lonnet::choose_server($form{'udom'});
1.115 raeburn 479: }
1.109 raeburn 480: if ($unloaded) {
481: &success($r,$form{'uname'},$form{'udom'},$authhost,'noredirect',
482: undef,\%form);
483: $r->internal_redirect('/adm/switchserver?otherserver='.$unloaded.'&origurl='.$firsturl);
1.110 raeburn 484: return OK;
1.109 raeburn 485: }
486: }
487: &success($r,$form{'uname'},$form{'udom'},$authhost,$firsturl,undef,
488: \%form);
1.110 raeburn 489: return OK;
1.81 albertel 490: }
1.1 albertel 491: }
492:
1.105 raeburn 493: sub check_can_host {
494: my ($r,$form,$authhost,$domdesc) = @_;
495: return unless (ref($form) eq 'HASH');
496: my $canhost = 1;
1.106 raeburn 497: my $lonhost = $r->dir_config('lonHostID');
1.105 raeburn 498: my $udom = $form->{'udom'};
1.108 raeburn 499: my @intdoms;
500: my $internet_names = &Apache::lonnet::get_internet_names($lonhost);
501: if (ref($internet_names) eq 'ARRAY') {
502: @intdoms = @{$internet_names};
503: }
1.106 raeburn 504: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
505: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
506: unless ($uint_dom ne '' && grep(/^\Q$uint_dom\E$/,@intdoms)) {
507: my $machine_dom = &Apache::lonnet::host_domain($lonhost);
508: my $hostname = &Apache::lonnet::hostname($lonhost);
509: my $serverhomeID = &Apache::lonnet::get_server_homeID($hostname);
510: my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID);
511: my %defdomdefaults = &Apache::lonnet::get_domain_defaults($serverhomedom);
1.105 raeburn 512: my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
513: my $loncaparev;
514: if ($authhost eq 'no_account_on_host') {
1.106 raeburn 515: $loncaparev = &Apache::lonnet::get_server_loncaparev($machine_dom);
1.105 raeburn 516: } else {
1.106 raeburn 517: $loncaparev = &Apache::lonnet::get_server_loncaparev($machine_dom,$lonhost);
1.105 raeburn 518: }
1.106 raeburn 519: $canhost = &Apache::lonnet::can_host_session($udom,$lonhost,$loncaparev,
520: $udomdefaults{'remotesessions'},
521: $defdomdefaults{'hostedsessions'});
1.105 raeburn 522: }
523: unless ($canhost) {
524: if ($authhost eq 'no_account_on_host') {
1.115 raeburn 525: my $checkloginvia = 1;
526: my ($login_host,$hostname) =
527: &Apache::lonnet::choose_server($udom,$checkloginvia);
1.105 raeburn 528: &Apache::loncommon::content_type($r,'text/html');
529: $r->send_http_header;
530: if ($login_host ne '') {
531: my $protocol = $Apache::lonnet::protocol{$login_host};
532: $protocol = 'http' if ($protocol ne 'https');
533: my $newurl = $protocol.'://'.$hostname.'/adm/createaccount';
534: $r->print(&Apache::loncommon::start_page('Create a user account in LON-CAPA').
535: '<h3>'.&mt('Account creation').'</h3>'.
536: &mt('You do not currently have a LON-CAPA account at this institution.').'<br />'.
537: '<p>'.&mt('You will be able to create one by logging into a LON-CAPA server within the [_1] domain.',$domdesc).'</p>'.
538: '<p>'.&mt('[_1]Log in[_2]','<a href="'.$newurl.'">','</a>').
539: &Apache::loncommon::end_page());
540: } else {
541: $r->print(&Apache::loncommon::start_page('Access to LON-CAPA unavailable').
542: '<h3>'.&mt('Account creation unavailable').'</h3>'.
543: &mt('You do not currently have a LON-CAPA account at this institution.').'<br />'.
544: '<p>'.&mt('Currently a LON-CAPA server is not available within the [_1] domain for you to log-in to, to create an account.',$domdesc).'</p>'.
545: &Apache::loncommon::end_page());
546: }
547: } else {
548: &success($r,$form->{'uname'},$udom,$authhost,'noredirect',undef,
549: $form);
1.107 raeburn 550: my ($otherserver) = &Apache::lonnet::choose_server($udom);
1.105 raeburn 551: $r->internal_redirect('/adm/switchserver?otherserver='.$otherserver);
552: }
553: }
1.110 raeburn 554: return $canhost;
1.105 raeburn 555: }
556:
1.115 raeburn 557: sub noswitch {
558: my $result = &Apache::loncommon::start_page('Access to LON-CAPA unavailable').
559: '<h3>'.&mt('Session unavailable').'</h3>'.
560: &mt('This LON-CAPA server is unable to host your session.').'<br />'.
561: '<p>'.&mt('Currently no other LON-CAPA server is available to host your session either.').'</p>'.
562: &Apache::loncommon::end_page();
563: return $result;
564: }
565:
1.121.2.2! raeburn 566: sub loginhelpdisplay {
! 567: my ($authdomain) = @_;
! 568: my $login_help = 1;
! 569: my $lang = &Apache::lonlocal::current_language();
! 570: if ($login_help) {
! 571: my $dom = $authdomain;
! 572: if ($dom eq '') {
! 573: $dom = &Apache::lonnet::default_login_domain();
! 574: }
! 575: my %domconfhash = &Apache::loncommon::get_domainconf($dom);
! 576: my $loginhelp_url;
! 577: if ($lang) {
! 578: $loginhelp_url = $domconfhash{$dom.'.login.helpurl_'.$lang};
! 579: if ($loginhelp_url ne '') {
! 580: return $loginhelp_url;
! 581: }
! 582: }
! 583: $loginhelp_url = $domconfhash{$dom.'.login.helpurl_nolang'};
! 584: if ($loginhelp_url ne '') {
! 585: return $loginhelp_url;
! 586: } else {
! 587: return '/adm/loginproblems.html';
! 588: }
! 589: }
! 590: return;
! 591: }
! 592:
1.1 albertel 593: 1;
594: __END__
1.7 www 595:
596:
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