Annotation of loncom/auth/lonauth.pm, revision 1.128
1.1 albertel 1: # The LearningOnline Network
2: # User Authentication Module
1.27 www 3: #
1.128 ! raeburn 4: # $Id: lonauth.pm,v 1.127 2013/09/29 00:49:24 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(/___/,$destsymb);
1.124 raeburn 106: unless ($desturl=~/^(adm|editupload|public)/) {
1.101 raeburn 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: );
1.122 raeburn 143: my $loginhelp = &loginhelpdisplay($domain);
144: if ($loginhelp) {
145: $loginhelp = '<p><a href="'.$loginhelp.'">'.$lt{'pro'}.'</a></p>';
146: }
147:
1.112 raeburn 148: 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 149: $r->print(<<ENDSUCCESS);
1.74 albertel 150: $start_page
1.19 www 151: $windowinfo
1.58 www 152: <h1>$lt{'wel'}</h1>
1.122 raeburn 153: $welcome
154: $loginhelp
1.64 albertel 155: $continuelink
1.74 albertel 156: $end_page
1.1 albertel 157: ENDSUCCESS
158: }
159:
160: # --------------------------------------------------------------- Failed login!
161:
162: sub failed {
1.85 albertel 163: my ($r,$message,$form) = @_;
1.128 ! raeburn 164: (undef,undef,undef,my $clientmathml,my $clientunicode) =
! 165: &Apache::loncommon::decode_user_agent();
! 166: my $args = {};
! 167: if ($clientunicode && !$clientmathml) {
! 168: $args = {'browser.unicode' => 1};
! 169: }
! 170:
! 171: my $start_page = &Apache::loncommon::start_page('Unsuccessful Login',undef,$args);
! 172: my $uname = $form->{'uname'};
! 173: my $udom;
! 174: if (&Apache::lonnet::domain($form->{'udom'},'description') ne '') {
! 175: $udom = $form->{'udom'};
! 176: }
! 177: my $retry = '/adm/login?username='.$form->{'uname'};
! 178: if ($udom) {
! 179: $retry .= '&domain='.$form->{'udom'}
! 180: }
1.100 raeburn 181: if (exists($form->{role})) {
1.128 ! raeburn 182: $retry .= '&role='.$form->{role};
1.100 raeburn 183: }
184: if (exists($form->{symb})) {
1.128 ! raeburn 185: $retry .= '&symb='.$form->{symb};
1.100 raeburn 186: }
1.74 albertel 187: my $end_page = &Apache::loncommon::end_page();
188: &Apache::loncommon::content_type($r,'text/html');
189: $r->send_http_header;
1.128 ! raeburn 190: my $loginhelp = &loginhelpdisplay($udom);
1.123 raeburn 191: if ($loginhelp) {
192: $loginhelp = '<p><a href="'.$loginhelp.'">'.&mt('Login problems?').'</a></p>';
193: }
194:
1.92 bisitz 195: $r->print(
196: $start_page
197: .'<h1>'.&mt('Sorry ...').'</h1>'
1.95 bisitz 198: .'<p class="LC_warning">'.&mt($message).'</p>'
1.100 raeburn 199: .'<p>'.&mt('Please [_1]log in again[_2].','<a href="'.$retry.'">','</a>')
1.92 bisitz 200: .'</p>'
1.123 raeburn 201: .$loginhelp
1.92 bisitz 202: .$end_page
203: );
204: }
1.60 www 205:
1.55 www 206: # ------------------------------------------------------------------ Rerouting!
207:
208: sub reroute {
1.74 albertel 209: my ($r) = @_;
210: &Apache::loncommon::content_type($r,'text/html');
211: $r->send_http_header;
1.126 bisitz 212: my $msg='<b>'.&mt('Sorry ...').'</b><br />'
1.92 bisitz 213: .&mt('Please [_1]log in again[_2].');
1.126 bisitz 214: &Apache::loncommon::simple_error_page($r,'Rerouting',$msg,{'no_auto_mt_msg' => 1});
1.55 www 215: }
216:
1.1 albertel 217: # ---------------------------------------------------------------- Main handler
218:
219: sub handler {
220: my $r = shift;
1.120 raeburn 221: my $londocroot = $r->dir_config('lonDocRoot');
1.85 albertel 222: my $form;
1.55 www 223: # Are we re-routing?
1.120 raeburn 224: if (-e "$londocroot/lon-status/reroute.txt") {
1.55 www 225: &reroute($r);
226: return OK;
227: }
1.56 www 228:
1.57 www 229: &Apache::lonlocal::get_language_handle($r);
1.1 albertel 230:
1.59 www 231: # -------------------------------- Prevent users from attempting to login twice
1.89 albertel 232: my $handle = &Apache::lonnet::check_for_valid_session($r);
233: if ($handle ne '') {
1.103 raeburn 234: my $lonidsdir=$r->dir_config('lonIDsDir');
235: if ($handle=~/^publicuser\_/) {
236: # For "public user" - remove it, we apparently really want to login
237: unlink($r->dir_config('lonIDsDir')."/$handle.id");
238: } else {
1.59 www 239: # Indeed, a valid token is found
1.103 raeburn 240: &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
241: &Apache::loncommon::content_type($r,'text/html');
242: $r->send_http_header;
243: my $start_page =
244: &Apache::loncommon::start_page('Already logged in');
245: my $end_page =
246: &Apache::loncommon::end_page();
1.105 raeburn 247: my $dest = '/adm/roles';
248: if ($env{'form.firsturl'} ne '') {
249: $dest = $env{'form.firsturl'};
250: }
1.103 raeburn 251: $r->print(
252: $start_page
1.125 raeburn 253: .'<p class="LC_warning">'.&mt('You are already logged in!').'</p>'
1.103 raeburn 254: .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].'
1.105 raeburn 255: ,'<a href="'.$dest.'">','</a>','<a href="/adm/logout">','</a>')
1.103 raeburn 256: .'</p>'
257: .$end_page
258: );
259: return OK;
260: }
1.59 www 261: }
262:
263: # ---------------------------------------------------- No valid token, continue
264:
265:
1.1 albertel 266: my $buffer;
1.84 albertel 267: if ($r->header_in('Content-length') > 0) {
268: $r->read($buffer,$r->header_in('Content-length'),0);
269: }
1.85 albertel 270: my %form;
271: foreach my $pair (split(/&/,$buffer)) {
272: my ($name,$value) = split(/=/,$pair);
1.7 www 273: $value =~ tr/+/ /;
274: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
1.85 albertel 275: $form{$name}=$value;
1.127 raeburn 276: }
1.1 albertel 277:
1.85 albertel 278: if ((!$form{'uname'}) || (!$form{'upass0'}) || (!$form{'udom'})) {
279: &failed($r,'Username, password and domain need to be specified.',
280: \%form);
1.1 albertel 281: return OK;
282: }
1.61 www 283:
284: # split user logging in and "su"-user
285:
1.85 albertel 286: ($form{'uname'},$form{'suname'})=split(/\:/,$form{'uname'});
1.87 albertel 287: $form{'uname'} = &LONCAPA::clean_username($form{'uname'});
288: $form{'suname'}= &LONCAPA::clean_username($form{'suname'});
289: $form{'udom'} = &LONCAPA::clean_domain( $form{'udom'});
1.1 albertel 290:
291: my $role = $r->dir_config('lonRole');
292: my $domain = $r->dir_config('lonDefDomain');
293: my $prodir = $r->dir_config('lonUsersDir');
1.93 raeburn 294: my $contact_name = &mt('LON-CAPA helpdesk');
1.1 albertel 295:
1.8 www 296: # ---------------------------------------- Get the information from login token
297:
1.85 albertel 298: my $tmpinfo=Apache::lonnet::reply('tmpget:'.$form{'logtoken'},
299: $form{'serverid'});
1.8 www 300:
1.127 raeburn 301: my %sessiondata;
302: if ($form{'iptoken'}) {
303: %sessiondata = &Apache::lonnet::tmpget($form{'iptoken'});
304: my $delete = &Apache::lonnet::tmpdel($form{'token'});
305: }
306:
1.114 raeburn 307: if (($tmpinfo=~/^error/) || ($tmpinfo eq 'con_lost') ||
308: ($tmpinfo eq 'no_such_host')) {
1.85 albertel 309: &failed($r,'Information needed to verify your login information is missing, inaccessible or expired.',\%form);
1.8 www 310: return OK;
1.44 www 311: } else {
1.85 albertel 312: my $reply = &Apache::lonnet::reply('tmpdel:'.$form{'logtoken'},
313: $form{'serverid'});
1.77 albertel 314: if ( $reply ne 'ok' ) {
1.85 albertel 315: &failed($r,'Session could not be opened.',\%form);
316: &Apache::lonnet::logthis("ERROR got a reply of $reply when trying to contact ". $form{'serverid'}." to get login token");
1.77 albertel 317: return OK;
1.44 www 318: }
1.8 www 319: }
1.100 raeburn 320:
1.93 raeburn 321: if (!&Apache::lonnet::domain($form{'udom'})) {
322: &failed($r,'The domain you provided is not a valid LON-CAPA domain.',\%form);
323: return OK;
324: }
1.100 raeburn 325:
326: my ($key,$firsturl,$rolestr,$symbstr)=split(/&/,$tmpinfo);
327: if ($rolestr) {
328: $rolestr = &unescape($rolestr);
329: }
330: if ($symbstr) {
331: $symbstr= &unescape($symbstr);
332: }
333: if ($rolestr =~ /^role=/) {
334: (undef,$form{'role'}) = split('=',$rolestr);
335: }
336: if ($symbstr =~ /^symb=/) {
337: (undef,$form{'symb'}) = split('=',$symbstr);
338: }
1.8 www 339:
340: my $keybin=pack("H16",$key);
341:
1.26 harris41 342: my $cipher;
343: if ($Crypt::DES::VERSION>=2.03) {
344: $cipher=new Crypt::DES $keybin;
345: }
346: else {
347: $cipher=new DES $keybin;
348: }
1.67 www 349: my $upass='';
350: for (my $i=0;$i<=2;$i++) {
351: my $chunk=
1.85 albertel 352: $cipher->decrypt(unpack("a8",pack("H16",substr($form{'upass'.$i},0,16))));
1.8 www 353:
1.67 www 354: $chunk.=
1.85 albertel 355: $cipher->decrypt(unpack("a8",pack("H16",substr($form{'upass'.$i},16,16))));
1.8 www 356:
1.67 www 357: $chunk=substr($chunk,1,ord(substr($chunk,0,1)));
358: $upass.=$chunk;
359: }
1.8 www 360:
1.1 albertel 361: # ---------------------------------------------------------------- Authenticate
1.119 raeburn 362:
1.90 raeburn 363: my %domconfig = &Apache::lonnet::get_dom('configuration',['usercreation'],$form{'udom'});
1.119 raeburn 364: my ($cancreate,$statustocreate) =
365: &Apache::createaccount::get_creation_controls($form{'udom'},$domconfig{'usercreation'});
366: my $defaultauth;
367: if (ref($cancreate) eq 'ARRAY') {
368: if (grep(/^login$/,@{$cancreate})) {
369: $defaultauth = 1;
1.90 raeburn 370: }
371: }
1.105 raeburn 372: my $clientcancheckhost = 1;
1.90 raeburn 373: my $authhost=Apache::lonnet::authenticate($form{'uname'},$upass,
1.105 raeburn 374: $form{'udom'},$defaultauth,
375: $clientcancheckhost);
1.1 albertel 376:
377: # --------------------------------------------------------------------- Failed?
378:
379: if ($authhost eq 'no_host') {
1.85 albertel 380: &failed($r,'Username and/or password could not be authenticated.',
381: \%form);
1.1 albertel 382: return OK;
1.90 raeburn 383: } elsif ($authhost eq 'no_account_on_host') {
1.119 raeburn 384: if ($defaultauth) {
1.105 raeburn 385: my $domdesc = &Apache::lonnet::domain($form{'udom'},'description');
1.110 raeburn 386: unless (&check_can_host($r,\%form,'no_account_on_host',$domdesc)) {
387: return OK;
388: }
1.90 raeburn 389: my $start_page =
1.104 droeschl 390: &Apache::loncommon::start_page('Create a user account in LON-CAPA');
1.93 raeburn 391: my $lonhost = $r->dir_config('lonHostID');
392: my $origmail = $Apache::lonnet::perlvar{'lonSupportEMail'};
393: my $contacts =
394: &Apache::loncommon::build_recipient_list(undef,'helpdeskmail',
395: $form{'udom'},$origmail);
396: my ($contact_email) = split(',',$contacts);
1.119 raeburn 397: my $output =
398: &Apache::createaccount::username_check($form{'uname'},$form{'udom'},
399: $domdesc,'',$lonhost,
400: $contact_email,$contact_name,
401: undef,$statustocreate);
1.90 raeburn 402: &Apache::loncommon::content_type($r,'text/html');
403: $r->send_http_header;
404: &Apache::createaccount::print_header($r,$start_page);
1.94 raeburn 405: $r->print('<h3>'.&mt('Account creation').'</h3>'.
406: &mt('Although your username and password were authenticated, you do not currently have a LON-CAPA account at this institution.').'<br />'.
407: $output.&Apache::loncommon::end_page());
1.90 raeburn 408: return OK;
409: } else {
410: &failed($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);
411: return OK;
412: }
1.1 albertel 413: }
414:
1.59 www 415: if (($firsturl eq '') ||
416: ($firsturl=~/^\/adm\/(logout|remote)/)) {
1.24 www 417: $firsturl='/adm/roles';
1.7 www 418: }
1.127 raeburn 419:
420: my $hosthere;
421: if ($form{'iptoken'}) {
422: if (($sessiondata{'domain'} eq $form{'udom'}) &&
423: ($sessiondata{'username'} eq $form{'uname'})) {
424: $hosthere = 1;
425: }
426: }
427:
1.61 www 428: # --------------------------------- Are we attempting to login as somebody else?
1.85 albertel 429: if ($form{'suname'}) {
1.61 www 430: # ------------ see if the original user has enough privileges to pull this stunt
1.85 albertel 431: if (&Apache::lonnet::privileged($form{'uname'},$form{'udom'})) {
1.61 www 432: # ---------------------------------------------------- see if the su-user exists
1.85 albertel 433: unless (&Apache::lonnet::homeserver($form{'suname'},$form{'udom'})
1.61 www 434: eq 'no_host') {
1.85 albertel 435: &Apache::lonnet::logthis(&Apache::lonnet::homeserver($form{'suname'},$form{'udom'}));
1.61 www 436: # ------------------------------ see if the su-user is not too highly privileged
1.85 albertel 437: unless (&Apache::lonnet::privileged($form{'suname'},$form{'udom'})) {
1.61 www 438: # -------------------------------------------------------- actually switch users
1.85 albertel 439: &Apache::lonnet::logperm('User '.$form{'uname'}.' at '.$form{'udom'}.
440: ' logging in as '.$form{'suname'});
441: $form{'uname'}=$form{'suname'};
1.61 www 442: } else {
443: &Apache::lonnet::logthis('Attempted switch user to privileged user');
444: }
445: }
446: } else {
447: &Apache::lonnet::logthis('Non-privileged user attempting switch user');
448: }
449: }
1.85 albertel 450:
1.127 raeburn 451: my ($is_balancer,$otherserver);
452:
453: unless ($hosthere) {
454: ($is_balancer,$otherserver) =
455: &Apache::lonnet::check_loadbalancing($form{'uname'},$form{'udom'});
456: }
1.117 raeburn 457:
458: if ($is_balancer) {
1.115 raeburn 459: if (!$otherserver) {
1.116 raeburn 460: ($otherserver) = &Apache::lonnet::choose_server($form{'udom'});
1.115 raeburn 461: }
462: if ($otherserver) {
463: &success($r,$form{'uname'},$form{'udom'},$authhost,'noredirect',undef,
464: \%form);
465: $r->internal_redirect('/adm/switchserver?otherserver='.$otherserver.'&origurl='.$firsturl);
466: } else {
467: $r->print(&noswitch());
468: }
1.110 raeburn 469: return OK;
1.81 albertel 470: } else {
1.115 raeburn 471: if (!&check_can_host($r,\%form,$authhost)) {
1.118 raeburn 472: my ($otherserver) = &Apache::lonnet::choose_server($form{'udom'});
1.115 raeburn 473: if ($otherserver) {
474: &success($r,$form{'uname'},$form{'udom'},$authhost,'noredirect',undef,
475: \%form);
476: $r->internal_redirect('/adm/switchserver?otherserver='.$otherserver.'&origurl='.$firsturl);
477: } else {
478: $r->print(&noswitch());
479: }
480: return OK;
481: }
482:
1.109 raeburn 483: # ------------------------------------------------------- Do the load balancing
484:
485: # ---------------------------------------------------------- Determine own load
486: my $loadlim = $r->dir_config('lonLoadLim');
487: my $loadavg;
488: {
489: my $loadfile=Apache::File->new('/proc/loadavg');
490: $loadavg=<$loadfile>;
491: }
492: $loadavg =~ s/\s.*//g;
493: my $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim);
494: my $userloadpercent=&Apache::lonnet::userload();
495:
496: # ---------------------------------------------------------- Are we overloaded?
497: if ((($userloadpercent>100.0)||($loadpercent>100.0))) {
498: my $unloaded=Apache::lonnet::spareserver($loadpercent,$userloadpercent,1,$form{'udom'});
1.115 raeburn 499: if (!$unloaded) {
1.118 raeburn 500: ($unloaded) = &Apache::lonnet::choose_server($form{'udom'});
1.115 raeburn 501: }
1.109 raeburn 502: if ($unloaded) {
503: &success($r,$form{'uname'},$form{'udom'},$authhost,'noredirect',
504: undef,\%form);
505: $r->internal_redirect('/adm/switchserver?otherserver='.$unloaded.'&origurl='.$firsturl);
1.110 raeburn 506: return OK;
1.109 raeburn 507: }
508: }
509: &success($r,$form{'uname'},$form{'udom'},$authhost,$firsturl,undef,
510: \%form);
1.110 raeburn 511: return OK;
1.81 albertel 512: }
1.1 albertel 513: }
514:
1.105 raeburn 515: sub check_can_host {
516: my ($r,$form,$authhost,$domdesc) = @_;
517: return unless (ref($form) eq 'HASH');
518: my $canhost = 1;
1.106 raeburn 519: my $lonhost = $r->dir_config('lonHostID');
1.105 raeburn 520: my $udom = $form->{'udom'};
1.108 raeburn 521: my @intdoms;
522: my $internet_names = &Apache::lonnet::get_internet_names($lonhost);
523: if (ref($internet_names) eq 'ARRAY') {
524: @intdoms = @{$internet_names};
525: }
1.106 raeburn 526: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
527: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
528: unless ($uint_dom ne '' && grep(/^\Q$uint_dom\E$/,@intdoms)) {
529: my $machine_dom = &Apache::lonnet::host_domain($lonhost);
530: my $hostname = &Apache::lonnet::hostname($lonhost);
531: my $serverhomeID = &Apache::lonnet::get_server_homeID($hostname);
532: my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID);
533: my %defdomdefaults = &Apache::lonnet::get_domain_defaults($serverhomedom);
1.105 raeburn 534: my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
535: my $loncaparev;
536: if ($authhost eq 'no_account_on_host') {
1.106 raeburn 537: $loncaparev = &Apache::lonnet::get_server_loncaparev($machine_dom);
1.105 raeburn 538: } else {
1.106 raeburn 539: $loncaparev = &Apache::lonnet::get_server_loncaparev($machine_dom,$lonhost);
1.105 raeburn 540: }
1.106 raeburn 541: $canhost = &Apache::lonnet::can_host_session($udom,$lonhost,$loncaparev,
542: $udomdefaults{'remotesessions'},
543: $defdomdefaults{'hostedsessions'});
1.105 raeburn 544: }
545: unless ($canhost) {
546: if ($authhost eq 'no_account_on_host') {
1.115 raeburn 547: my $checkloginvia = 1;
548: my ($login_host,$hostname) =
549: &Apache::lonnet::choose_server($udom,$checkloginvia);
1.105 raeburn 550: &Apache::loncommon::content_type($r,'text/html');
551: $r->send_http_header;
552: if ($login_host ne '') {
553: my $protocol = $Apache::lonnet::protocol{$login_host};
554: $protocol = 'http' if ($protocol ne 'https');
555: my $newurl = $protocol.'://'.$hostname.'/adm/createaccount';
556: $r->print(&Apache::loncommon::start_page('Create a user account in LON-CAPA').
557: '<h3>'.&mt('Account creation').'</h3>'.
558: &mt('You do not currently have a LON-CAPA account at this institution.').'<br />'.
559: '<p>'.&mt('You will be able to create one by logging into a LON-CAPA server within the [_1] domain.',$domdesc).'</p>'.
560: '<p>'.&mt('[_1]Log in[_2]','<a href="'.$newurl.'">','</a>').
561: &Apache::loncommon::end_page());
562: } else {
563: $r->print(&Apache::loncommon::start_page('Access to LON-CAPA unavailable').
564: '<h3>'.&mt('Account creation unavailable').'</h3>'.
565: &mt('You do not currently have a LON-CAPA account at this institution.').'<br />'.
566: '<p>'.&mt('Currently a LON-CAPA server is not available within the [_1] domain for you to log-in to, to create an account.',$domdesc).'</p>'.
567: &Apache::loncommon::end_page());
568: }
569: } else {
570: &success($r,$form->{'uname'},$udom,$authhost,'noredirect',undef,
571: $form);
1.107 raeburn 572: my ($otherserver) = &Apache::lonnet::choose_server($udom);
1.105 raeburn 573: $r->internal_redirect('/adm/switchserver?otherserver='.$otherserver);
574: }
575: }
1.110 raeburn 576: return $canhost;
1.105 raeburn 577: }
578:
1.115 raeburn 579: sub noswitch {
580: my $result = &Apache::loncommon::start_page('Access to LON-CAPA unavailable').
581: '<h3>'.&mt('Session unavailable').'</h3>'.
582: &mt('This LON-CAPA server is unable to host your session.').'<br />'.
583: '<p>'.&mt('Currently no other LON-CAPA server is available to host your session either.').'</p>'.
584: &Apache::loncommon::end_page();
585: return $result;
586: }
587:
1.122 raeburn 588: sub loginhelpdisplay {
589: my ($authdomain) = @_;
590: my $login_help = 1;
591: my $lang = &Apache::lonlocal::current_language();
592: if ($login_help) {
593: my $dom = $authdomain;
594: if ($dom eq '') {
595: $dom = &Apache::lonnet::default_login_domain();
596: }
597: my %domconfhash = &Apache::loncommon::get_domainconf($dom);
598: my $loginhelp_url;
599: if ($lang) {
600: $loginhelp_url = $domconfhash{$dom.'.login.helpurl_'.$lang};
601: if ($loginhelp_url ne '') {
602: return $loginhelp_url;
603: }
604: }
605: $loginhelp_url = $domconfhash{$dom.'.login.helpurl_nolang'};
606: if ($loginhelp_url ne '') {
607: return $loginhelp_url;
608: } else {
609: return '/adm/loginproblems.html';
610: }
611: }
612: return;
613: }
614:
1.1 albertel 615: 1;
616: __END__
1.7 www 617:
618:
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