Annotation of loncom/auth/lonauth.pm, revision 1.122
1.1 albertel 1: # The LearningOnline Network
2: # User Authentication Module
1.27 www 3: #
1.122 ! raeburn 4: # $Id: lonauth.pm,v 1.121 2012/04/11 11:40:07 goltermann 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:
1.102 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) = @_;
1.104 droeschl 164: my $start_page = &Apache::loncommon::start_page('Unsuccessful Login',undef);
1.100 raeburn 165: my $retry = '/adm/login?username='.$form->{'uname'}.
166: '&domain='.$form->{'udom'};
167: if (exists($form->{role})) {
168: $retry .= '&role='.$form->{role};
169: }
170: if (exists($form->{symb})) {
171: $retry .= '&symb='.$form->{symb};
172: }
1.74 albertel 173: my $end_page = &Apache::loncommon::end_page();
174: &Apache::loncommon::content_type($r,'text/html');
175: $r->send_http_header;
1.92 bisitz 176: $r->print(
177: $start_page
178: .'<h1>'.&mt('Sorry ...').'</h1>'
1.95 bisitz 179: .'<p class="LC_warning">'.&mt($message).'</p>'
1.100 raeburn 180: .'<p>'.&mt('Please [_1]log in again[_2].','<a href="'.$retry.'">','</a>')
1.92 bisitz 181: .'</p>'
182: .'<p><a href="/adm/loginproblems.html">'.&mt('Login problems?').'</a></p>'
183: .$end_page
184: );
185: }
1.60 www 186:
1.55 www 187: # ------------------------------------------------------------------ Rerouting!
188:
189: sub reroute {
1.74 albertel 190: my ($r) = @_;
191: &Apache::loncommon::content_type($r,'text/html');
192: $r->send_http_header;
1.92 bisitz 193: my $msg='<h1>'.&mt('Sorry ...').'</h1>'
194: .&mt('Please [_1]log in again[_2].');
1.74 albertel 195: &Apache::loncommon::simple_error_page($r,'Rerouting',$msg);
1.55 www 196: }
197:
1.1 albertel 198: # ---------------------------------------------------------------- Main handler
199:
200: sub handler {
201: my $r = shift;
1.120 raeburn 202: my $londocroot = $r->dir_config('lonDocRoot');
1.85 albertel 203: my $form;
1.55 www 204: # Are we re-routing?
1.120 raeburn 205: if (-e "$londocroot/lon-status/reroute.txt") {
1.55 www 206: &reroute($r);
207: return OK;
208: }
1.56 www 209:
1.57 www 210: &Apache::lonlocal::get_language_handle($r);
1.1 albertel 211:
1.59 www 212: # -------------------------------- Prevent users from attempting to login twice
1.89 albertel 213: my $handle = &Apache::lonnet::check_for_valid_session($r);
214: if ($handle ne '') {
1.103 raeburn 215: my $lonidsdir=$r->dir_config('lonIDsDir');
216: if ($handle=~/^publicuser\_/) {
217: # For "public user" - remove it, we apparently really want to login
218: unlink($r->dir_config('lonIDsDir')."/$handle.id");
219: } else {
1.59 www 220: # Indeed, a valid token is found
1.103 raeburn 221: &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
222: &Apache::loncommon::content_type($r,'text/html');
223: $r->send_http_header;
224: my $start_page =
225: &Apache::loncommon::start_page('Already logged in');
226: my $end_page =
227: &Apache::loncommon::end_page();
1.105 raeburn 228: my $dest = '/adm/roles';
229: if ($env{'form.firsturl'} ne '') {
230: $dest = $env{'form.firsturl'};
231: }
1.103 raeburn 232: $r->print(
233: $start_page
1.121 golterma 234: .'<p class="LC_warning>"'.&mt('You are already logged in!').'</p>'
1.103 raeburn 235: .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].'
1.105 raeburn 236: ,'<a href="'.$dest.'">','</a>','<a href="/adm/logout">','</a>')
1.103 raeburn 237: .'</p>'
238: .$end_page
239: );
240: return OK;
241: }
1.59 www 242: }
243:
244: # ---------------------------------------------------- No valid token, continue
245:
246:
1.1 albertel 247: my $buffer;
1.84 albertel 248: if ($r->header_in('Content-length') > 0) {
249: $r->read($buffer,$r->header_in('Content-length'),0);
250: }
1.85 albertel 251: my %form;
252: foreach my $pair (split(/&/,$buffer)) {
253: my ($name,$value) = split(/=/,$pair);
1.7 www 254: $value =~ tr/+/ /;
255: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
1.85 albertel 256: $form{$name}=$value;
1.1 albertel 257: }
258:
1.85 albertel 259: if ((!$form{'uname'}) || (!$form{'upass0'}) || (!$form{'udom'})) {
260: &failed($r,'Username, password and domain need to be specified.',
261: \%form);
1.1 albertel 262: return OK;
263: }
1.61 www 264:
265: # split user logging in and "su"-user
266:
1.85 albertel 267: ($form{'uname'},$form{'suname'})=split(/\:/,$form{'uname'});
1.87 albertel 268: $form{'uname'} = &LONCAPA::clean_username($form{'uname'});
269: $form{'suname'}= &LONCAPA::clean_username($form{'suname'});
270: $form{'udom'} = &LONCAPA::clean_domain( $form{'udom'});
1.1 albertel 271:
272: my $role = $r->dir_config('lonRole');
273: my $domain = $r->dir_config('lonDefDomain');
274: my $prodir = $r->dir_config('lonUsersDir');
1.93 raeburn 275: my $contact_name = &mt('LON-CAPA helpdesk');
1.1 albertel 276:
1.8 www 277: # ---------------------------------------- Get the information from login token
278:
1.85 albertel 279: my $tmpinfo=Apache::lonnet::reply('tmpget:'.$form{'logtoken'},
280: $form{'serverid'});
1.8 www 281:
1.114 raeburn 282: if (($tmpinfo=~/^error/) || ($tmpinfo eq 'con_lost') ||
283: ($tmpinfo eq 'no_such_host')) {
1.85 albertel 284: &failed($r,'Information needed to verify your login information is missing, inaccessible or expired.',\%form);
1.8 www 285: return OK;
1.44 www 286: } else {
1.85 albertel 287: my $reply = &Apache::lonnet::reply('tmpdel:'.$form{'logtoken'},
288: $form{'serverid'});
1.77 albertel 289: if ( $reply ne 'ok' ) {
1.85 albertel 290: &failed($r,'Session could not be opened.',\%form);
291: &Apache::lonnet::logthis("ERROR got a reply of $reply when trying to contact ". $form{'serverid'}." to get login token");
1.77 albertel 292: return OK;
1.44 www 293: }
1.8 www 294: }
1.100 raeburn 295:
1.93 raeburn 296: if (!&Apache::lonnet::domain($form{'udom'})) {
297: &failed($r,'The domain you provided is not a valid LON-CAPA domain.',\%form);
298: return OK;
299: }
1.100 raeburn 300:
301: my ($key,$firsturl,$rolestr,$symbstr)=split(/&/,$tmpinfo);
302: if ($rolestr) {
303: $rolestr = &unescape($rolestr);
304: }
305: if ($symbstr) {
306: $symbstr= &unescape($symbstr);
307: }
308: if ($rolestr =~ /^role=/) {
309: (undef,$form{'role'}) = split('=',$rolestr);
310: }
311: if ($symbstr =~ /^symb=/) {
312: (undef,$form{'symb'}) = split('=',$symbstr);
313: }
1.8 www 314:
315: my $keybin=pack("H16",$key);
316:
1.26 harris41 317: my $cipher;
318: if ($Crypt::DES::VERSION>=2.03) {
319: $cipher=new Crypt::DES $keybin;
320: }
321: else {
322: $cipher=new DES $keybin;
323: }
1.67 www 324: my $upass='';
325: for (my $i=0;$i<=2;$i++) {
326: my $chunk=
1.85 albertel 327: $cipher->decrypt(unpack("a8",pack("H16",substr($form{'upass'.$i},0,16))));
1.8 www 328:
1.67 www 329: $chunk.=
1.85 albertel 330: $cipher->decrypt(unpack("a8",pack("H16",substr($form{'upass'.$i},16,16))));
1.8 www 331:
1.67 www 332: $chunk=substr($chunk,1,ord(substr($chunk,0,1)));
333: $upass.=$chunk;
334: }
1.8 www 335:
1.1 albertel 336: # ---------------------------------------------------------------- Authenticate
1.119 raeburn 337:
1.90 raeburn 338: my %domconfig = &Apache::lonnet::get_dom('configuration',['usercreation'],$form{'udom'});
1.119 raeburn 339: my ($cancreate,$statustocreate) =
340: &Apache::createaccount::get_creation_controls($form{'udom'},$domconfig{'usercreation'});
341: my $defaultauth;
342: if (ref($cancreate) eq 'ARRAY') {
343: if (grep(/^login$/,@{$cancreate})) {
344: $defaultauth = 1;
1.90 raeburn 345: }
346: }
1.105 raeburn 347: my $clientcancheckhost = 1;
1.90 raeburn 348: my $authhost=Apache::lonnet::authenticate($form{'uname'},$upass,
1.105 raeburn 349: $form{'udom'},$defaultauth,
350: $clientcancheckhost);
1.1 albertel 351:
352: # --------------------------------------------------------------------- Failed?
353:
354: if ($authhost eq 'no_host') {
1.85 albertel 355: &failed($r,'Username and/or password could not be authenticated.',
356: \%form);
1.1 albertel 357: return OK;
1.90 raeburn 358: } elsif ($authhost eq 'no_account_on_host') {
1.119 raeburn 359: if ($defaultauth) {
1.105 raeburn 360: my $domdesc = &Apache::lonnet::domain($form{'udom'},'description');
1.110 raeburn 361: unless (&check_can_host($r,\%form,'no_account_on_host',$domdesc)) {
362: return OK;
363: }
1.90 raeburn 364: my $start_page =
1.104 droeschl 365: &Apache::loncommon::start_page('Create a user account in LON-CAPA');
1.93 raeburn 366: my $lonhost = $r->dir_config('lonHostID');
367: my $origmail = $Apache::lonnet::perlvar{'lonSupportEMail'};
368: my $contacts =
369: &Apache::loncommon::build_recipient_list(undef,'helpdeskmail',
370: $form{'udom'},$origmail);
371: my ($contact_email) = split(',',$contacts);
1.119 raeburn 372: my $output =
373: &Apache::createaccount::username_check($form{'uname'},$form{'udom'},
374: $domdesc,'',$lonhost,
375: $contact_email,$contact_name,
376: undef,$statustocreate);
1.90 raeburn 377: &Apache::loncommon::content_type($r,'text/html');
378: $r->send_http_header;
379: &Apache::createaccount::print_header($r,$start_page);
1.94 raeburn 380: $r->print('<h3>'.&mt('Account creation').'</h3>'.
381: &mt('Although your username and password were authenticated, you do not currently have a LON-CAPA account at this institution.').'<br />'.
382: $output.&Apache::loncommon::end_page());
1.90 raeburn 383: return OK;
384: } else {
385: &failed($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);
386: return OK;
387: }
1.1 albertel 388: }
389:
1.59 www 390: if (($firsturl eq '') ||
391: ($firsturl=~/^\/adm\/(logout|remote)/)) {
1.24 www 392: $firsturl='/adm/roles';
1.7 www 393: }
1.61 www 394: # --------------------------------- Are we attempting to login as somebody else?
1.85 albertel 395: if ($form{'suname'}) {
1.61 www 396: # ------------ see if the original user has enough privileges to pull this stunt
1.85 albertel 397: if (&Apache::lonnet::privileged($form{'uname'},$form{'udom'})) {
1.61 www 398: # ---------------------------------------------------- see if the su-user exists
1.85 albertel 399: unless (&Apache::lonnet::homeserver($form{'suname'},$form{'udom'})
1.61 www 400: eq 'no_host') {
1.85 albertel 401: &Apache::lonnet::logthis(&Apache::lonnet::homeserver($form{'suname'},$form{'udom'}));
1.61 www 402: # ------------------------------ see if the su-user is not too highly privileged
1.85 albertel 403: unless (&Apache::lonnet::privileged($form{'suname'},$form{'udom'})) {
1.61 www 404: # -------------------------------------------------------- actually switch users
1.85 albertel 405: &Apache::lonnet::logperm('User '.$form{'uname'}.' at '.$form{'udom'}.
406: ' logging in as '.$form{'suname'});
407: $form{'uname'}=$form{'suname'};
1.61 www 408: } else {
409: &Apache::lonnet::logthis('Attempted switch user to privileged user');
410: }
411: }
412: } else {
413: &Apache::lonnet::logthis('Non-privileged user attempting switch user');
414: }
415: }
1.85 albertel 416:
1.117 raeburn 417: my ($is_balancer,$otherserver) =
418: &Apache::lonnet::check_loadbalancing($form{'uname'},$form{'udom'});
419:
420: if ($is_balancer) {
1.115 raeburn 421: if (!$otherserver) {
1.116 raeburn 422: ($otherserver) = &Apache::lonnet::choose_server($form{'udom'});
1.115 raeburn 423: }
424: if ($otherserver) {
425: &success($r,$form{'uname'},$form{'udom'},$authhost,'noredirect',undef,
426: \%form);
427: $r->internal_redirect('/adm/switchserver?otherserver='.$otherserver.'&origurl='.$firsturl);
428: } else {
429: $r->print(&noswitch());
430: }
1.110 raeburn 431: return OK;
1.81 albertel 432: } else {
1.115 raeburn 433: if (!&check_can_host($r,\%form,$authhost)) {
1.118 raeburn 434: my ($otherserver) = &Apache::lonnet::choose_server($form{'udom'});
1.115 raeburn 435: if ($otherserver) {
436: &success($r,$form{'uname'},$form{'udom'},$authhost,'noredirect',undef,
437: \%form);
438: $r->internal_redirect('/adm/switchserver?otherserver='.$otherserver.'&origurl='.$firsturl);
439: } else {
440: $r->print(&noswitch());
441: }
442: return OK;
443: }
444:
1.109 raeburn 445: # ------------------------------------------------------- Do the load balancing
446:
447: # ---------------------------------------------------------- Determine own load
448: my $loadlim = $r->dir_config('lonLoadLim');
449: my $loadavg;
450: {
451: my $loadfile=Apache::File->new('/proc/loadavg');
452: $loadavg=<$loadfile>;
453: }
454: $loadavg =~ s/\s.*//g;
455: my $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim);
456: my $userloadpercent=&Apache::lonnet::userload();
457:
458: # ---------------------------------------------------------- Are we overloaded?
459: if ((($userloadpercent>100.0)||($loadpercent>100.0))) {
460: my $unloaded=Apache::lonnet::spareserver($loadpercent,$userloadpercent,1,$form{'udom'});
1.115 raeburn 461: if (!$unloaded) {
1.118 raeburn 462: ($unloaded) = &Apache::lonnet::choose_server($form{'udom'});
1.115 raeburn 463: }
1.109 raeburn 464: if ($unloaded) {
465: &success($r,$form{'uname'},$form{'udom'},$authhost,'noredirect',
466: undef,\%form);
467: $r->internal_redirect('/adm/switchserver?otherserver='.$unloaded.'&origurl='.$firsturl);
1.110 raeburn 468: return OK;
1.109 raeburn 469: }
470: }
471: &success($r,$form{'uname'},$form{'udom'},$authhost,$firsturl,undef,
472: \%form);
1.110 raeburn 473: return OK;
1.81 albertel 474: }
1.1 albertel 475: }
476:
1.105 raeburn 477: sub check_can_host {
478: my ($r,$form,$authhost,$domdesc) = @_;
479: return unless (ref($form) eq 'HASH');
480: my $canhost = 1;
1.106 raeburn 481: my $lonhost = $r->dir_config('lonHostID');
1.105 raeburn 482: my $udom = $form->{'udom'};
1.108 raeburn 483: my @intdoms;
484: my $internet_names = &Apache::lonnet::get_internet_names($lonhost);
485: if (ref($internet_names) eq 'ARRAY') {
486: @intdoms = @{$internet_names};
487: }
1.106 raeburn 488: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
489: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
490: unless ($uint_dom ne '' && grep(/^\Q$uint_dom\E$/,@intdoms)) {
491: my $machine_dom = &Apache::lonnet::host_domain($lonhost);
492: my $hostname = &Apache::lonnet::hostname($lonhost);
493: my $serverhomeID = &Apache::lonnet::get_server_homeID($hostname);
494: my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID);
495: my %defdomdefaults = &Apache::lonnet::get_domain_defaults($serverhomedom);
1.105 raeburn 496: my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
497: my $loncaparev;
498: if ($authhost eq 'no_account_on_host') {
1.106 raeburn 499: $loncaparev = &Apache::lonnet::get_server_loncaparev($machine_dom);
1.105 raeburn 500: } else {
1.106 raeburn 501: $loncaparev = &Apache::lonnet::get_server_loncaparev($machine_dom,$lonhost);
1.105 raeburn 502: }
1.106 raeburn 503: $canhost = &Apache::lonnet::can_host_session($udom,$lonhost,$loncaparev,
504: $udomdefaults{'remotesessions'},
505: $defdomdefaults{'hostedsessions'});
1.105 raeburn 506: }
507: unless ($canhost) {
508: if ($authhost eq 'no_account_on_host') {
1.115 raeburn 509: my $checkloginvia = 1;
510: my ($login_host,$hostname) =
511: &Apache::lonnet::choose_server($udom,$checkloginvia);
1.105 raeburn 512: &Apache::loncommon::content_type($r,'text/html');
513: $r->send_http_header;
514: if ($login_host ne '') {
515: my $protocol = $Apache::lonnet::protocol{$login_host};
516: $protocol = 'http' if ($protocol ne 'https');
517: my $newurl = $protocol.'://'.$hostname.'/adm/createaccount';
518: $r->print(&Apache::loncommon::start_page('Create a user account in LON-CAPA').
519: '<h3>'.&mt('Account creation').'</h3>'.
520: &mt('You do not currently have a LON-CAPA account at this institution.').'<br />'.
521: '<p>'.&mt('You will be able to create one by logging into a LON-CAPA server within the [_1] domain.',$domdesc).'</p>'.
522: '<p>'.&mt('[_1]Log in[_2]','<a href="'.$newurl.'">','</a>').
523: &Apache::loncommon::end_page());
524: } else {
525: $r->print(&Apache::loncommon::start_page('Access to LON-CAPA unavailable').
526: '<h3>'.&mt('Account creation unavailable').'</h3>'.
527: &mt('You do not currently have a LON-CAPA account at this institution.').'<br />'.
528: '<p>'.&mt('Currently a LON-CAPA server is not available within the [_1] domain for you to log-in to, to create an account.',$domdesc).'</p>'.
529: &Apache::loncommon::end_page());
530: }
531: } else {
532: &success($r,$form->{'uname'},$udom,$authhost,'noredirect',undef,
533: $form);
1.107 raeburn 534: my ($otherserver) = &Apache::lonnet::choose_server($udom);
1.105 raeburn 535: $r->internal_redirect('/adm/switchserver?otherserver='.$otherserver);
536: }
537: }
1.110 raeburn 538: return $canhost;
1.105 raeburn 539: }
540:
1.115 raeburn 541: sub noswitch {
542: my $result = &Apache::loncommon::start_page('Access to LON-CAPA unavailable').
543: '<h3>'.&mt('Session unavailable').'</h3>'.
544: &mt('This LON-CAPA server is unable to host your session.').'<br />'.
545: '<p>'.&mt('Currently no other LON-CAPA server is available to host your session either.').'</p>'.
546: &Apache::loncommon::end_page();
547: return $result;
548: }
549:
1.122 ! raeburn 550: sub loginhelpdisplay {
! 551: my ($authdomain) = @_;
! 552: my $login_help = 1;
! 553: my $lang = &Apache::lonlocal::current_language();
! 554: if ($login_help) {
! 555: my $dom = $authdomain;
! 556: if ($dom eq '') {
! 557: $dom = &Apache::lonnet::default_login_domain();
! 558: }
! 559: my %domconfhash = &Apache::loncommon::get_domainconf($dom);
! 560: my $loginhelp_url;
! 561: if ($lang) {
! 562: $loginhelp_url = $domconfhash{$dom.'.login.helpurl_'.$lang};
! 563: if ($loginhelp_url ne '') {
! 564: return $loginhelp_url;
! 565: }
! 566: }
! 567: $loginhelp_url = $domconfhash{$dom.'.login.helpurl_nolang'};
! 568: if ($loginhelp_url ne '') {
! 569: return $loginhelp_url;
! 570: } else {
! 571: return '/adm/loginproblems.html';
! 572: }
! 573: }
! 574: return;
! 575: }
! 576:
1.1 albertel 577: 1;
578: __END__
1.7 www 579:
580:
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