Annotation of loncom/auth/lonauth.pm, revision 1.121.2.14
1.1 albertel 1: # The LearningOnline Network
2: # User Authentication Module
1.27 www 3: #
1.121.2.14! raeburn 4: # $Id: lonauth.pm,v 1.121.2.13 2015/01/26 22:25:41 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);
1.121.2.13 raeburn 106: $desturl = &Apache::lonnet::clutter($desturl);
1.101 raeburn 107: $desturl = &HTML::Entities::encode($desturl,'"<>&');
108: $destsymb = &HTML::Entities::encode($destsymb,'"<>&');
1.121.2.8 raeburn 109: $destination .= 'destinationurl='.$desturl.
1.101 raeburn 110: '&destsymb='.$destsymb;
111: } else {
112: $destsymb = &HTML::Entities::encode($destsymb,'"<>&');
1.121.2.8 raeburn 113: $destination .= 'destinationurl='.$destsymb;
1.101 raeburn 114: }
115: }
1.111 raeburn 116: if ($destination =~ m{^/adm/roles}) {
117: $destination .= ($destination =~ /\?/) ? '&' : '?';
118: $destination .= 'source=login';
119: }
1.100 raeburn 120:
1.121.2.1 raeburn 121: my $windowinfo=&Apache::lonmenu::open($env{'browser.os'});
122: my $startupremote=&Apache::lonmenu::startupremote($destination);
123: my $remoteinfo=&Apache::lonmenu::load_remote_msg($lowerurl);
124: my $setflags=&Apache::lonmenu::setflags();
125: my $maincall=&Apache::lonmenu::maincall();
1.99 bisitz 126: my $brcrum = [{'href' => '',
127: 'text' => 'Successful Login'},];
1.74 albertel 128: my $start_page=&Apache::loncommon::start_page('Successful Login',
1.121.2.1 raeburn 129: $startupremote,
130: {'no_inline_link' => 1,
131: 'bread_crumbs' => $brcrum,});
1.74 albertel 132: my $end_page =&Apache::loncommon::end_page();
133:
1.121.2.1 raeburn 134: my $continuelink;
135: if ($env{'environment.remote'} eq 'off') {
136: $continuelink='<a href="'.$destination.'">'.&mt('Continue').'</a>';
137: }
1.5 www 138: # ------------------------------------------------- Output for successful login
139:
1.74 albertel 140: &Apache::loncommon::content_type($r,'text/html');
141: $r->header_out('Set-cookie' => $cookie);
142: $r->send_http_header;
1.1 albertel 143:
1.58 www 144: my %lt=&Apache::lonlocal::texthash(
145: 'wel' => 'Welcome',
1.92 bisitz 146: 'pro' => 'Login problems?',
1.58 www 147: );
1.121.2.2 raeburn 148: my $loginhelp = &loginhelpdisplay($domain);
149: if ($loginhelp) {
150: $loginhelp = '<p><a href="'.$loginhelp.'">'.$lt{'pro'}.'</a></p>';
151: }
152:
1.112 raeburn 153: 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 154: $r->print(<<ENDSUCCESS);
1.74 albertel 155: $start_page
1.121.2.1 raeburn 156: $setflags
1.19 www 157: $windowinfo
1.58 www 158: <h1>$lt{'wel'}</h1>
1.121.2.2 raeburn 159: $welcome
160: $loginhelp
1.121.2.1 raeburn 161: $remoteinfo
162: $maincall
1.64 albertel 163: $continuelink
1.74 albertel 164: $end_page
1.1 albertel 165: ENDSUCCESS
1.121.2.11 raeburn 166: return;
1.1 albertel 167: }
168:
169: # --------------------------------------------------------------- Failed login!
170:
171: sub failed {
1.85 albertel 172: my ($r,$message,$form) = @_;
1.121.2.7 raeburn 173: (undef,undef,undef,my $clientmathml,my $clientunicode) =
174: &Apache::loncommon::decode_user_agent();
175: my $args = {};
176: if ($clientunicode && !$clientmathml) {
177: $args = {'browser.unicode' => 1};
178: }
179:
180: my $start_page = &Apache::loncommon::start_page('Unsuccessful Login',undef,$args);
181: my $uname = &Apache::loncommon::cleanup_html($form->{'uname'});
182: my $udom = &Apache::loncommon::cleanup_html($form->{'udom'});
183: if (&Apache::lonnet::domain($udom,'description') eq '') {
184: undef($udom);
185: }
186: my $retry = '/adm/login';
187: if ($uname eq $form->{'uname'}) {
188: $retry .= '?username='.$uname;
189: }
190: if ($udom) {
191: $retry .= (($retry=~/\?/)?'&':'?').'domain='.$udom;
192: }
1.100 raeburn 193: if (exists($form->{role})) {
1.121.2.7 raeburn 194: my $role = &Apache::loncommon::cleanup_html($form->{role});
195: if ($role ne '') {
196: $retry .= (($retry=~/\?/)?'&':'?').'role='.$role;
197: }
1.100 raeburn 198: }
199: if (exists($form->{symb})) {
1.121.2.7 raeburn 200: my $symb = &Apache::loncommon::cleanup_html($form->{symb});
201: if ($symb ne '') {
202: $retry .= (($retry=~/\?/)?'&':'?').'symb='.$symb;
203: }
1.100 raeburn 204: }
1.121.2.7 raeburn 205: my $end_page = &Apache::loncommon::end_page();
1.74 albertel 206: &Apache::loncommon::content_type($r,'text/html');
207: $r->send_http_header;
1.121.2.9 raeburn 208: my @actions =
209: (&mt('Please [_1]log in again[_2].','<a href="'.$retry.'">','</a>'));
1.121.2.7 raeburn 210: my $loginhelp = &loginhelpdisplay($udom);
1.121.2.2 raeburn 211: if ($loginhelp) {
1.121.2.9 raeburn 212: push(@actions, '<a href="'.$loginhelp.'">'.&mt('Login problems?').'</a>');
1.121.2.2 raeburn 213: }
1.121.2.9 raeburn 214: #FIXME: link to helpdesk might be added here
1.121.2.2 raeburn 215:
1.92 bisitz 216: $r->print(
217: $start_page
1.121.2.9 raeburn 218: .'<h2>'.&mt('Sorry ...').'</h2>'
219: .&Apache::lonhtmlcommon::confirm_success(&mt($message),1).'<br /><br />'
220: .&Apache::lonhtmlcommon::actionbox(\@actions)
1.92 bisitz 221: .$end_page
222: );
223: }
1.60 www 224:
1.55 www 225: # ------------------------------------------------------------------ Rerouting!
226:
227: sub reroute {
1.74 albertel 228: my ($r) = @_;
229: &Apache::loncommon::content_type($r,'text/html');
230: $r->send_http_header;
1.121.2.5 raeburn 231: my $msg='<b>'.&mt('Sorry ...').'</b><br />'
1.92 bisitz 232: .&mt('Please [_1]log in again[_2].');
1.121.2.5 raeburn 233: &Apache::loncommon::simple_error_page($r,'Rerouting',$msg,{'no_auto_mt_msg' => 1});
1.55 www 234: }
235:
1.1 albertel 236: # ---------------------------------------------------------------- Main handler
237:
238: sub handler {
239: my $r = shift;
1.120 raeburn 240: my $londocroot = $r->dir_config('lonDocRoot');
1.85 albertel 241: my $form;
1.55 www 242: # Are we re-routing?
1.120 raeburn 243: if (-e "$londocroot/lon-status/reroute.txt") {
1.55 www 244: &reroute($r);
245: return OK;
246: }
1.56 www 247:
1.57 www 248: &Apache::lonlocal::get_language_handle($r);
1.1 albertel 249:
1.59 www 250: # -------------------------------- Prevent users from attempting to login twice
1.89 albertel 251: my $handle = &Apache::lonnet::check_for_valid_session($r);
252: if ($handle ne '') {
1.103 raeburn 253: my $lonidsdir=$r->dir_config('lonIDsDir');
254: if ($handle=~/^publicuser\_/) {
255: # For "public user" - remove it, we apparently really want to login
256: unlink($r->dir_config('lonIDsDir')."/$handle.id");
257: } else {
1.59 www 258: # Indeed, a valid token is found
1.103 raeburn 259: &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
260: &Apache::loncommon::content_type($r,'text/html');
261: $r->send_http_header;
262: my $start_page =
263: &Apache::loncommon::start_page('Already logged in');
264: my $end_page =
265: &Apache::loncommon::end_page();
1.105 raeburn 266: my $dest = '/adm/roles';
267: if ($env{'form.firsturl'} ne '') {
268: $dest = $env{'form.firsturl'};
269: }
1.103 raeburn 270: $r->print(
271: $start_page
1.121.2.4 raeburn 272: .'<p class="LC_warning">'.&mt('You are already logged in!').'</p>'
1.103 raeburn 273: .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].'
1.105 raeburn 274: ,'<a href="'.$dest.'">','</a>','<a href="/adm/logout">','</a>')
1.103 raeburn 275: .'</p>'
276: .$end_page
277: );
278: return OK;
279: }
1.59 www 280: }
281:
282: # ---------------------------------------------------- No valid token, continue
283:
284:
1.1 albertel 285: my $buffer;
1.84 albertel 286: if ($r->header_in('Content-length') > 0) {
287: $r->read($buffer,$r->header_in('Content-length'),0);
288: }
1.85 albertel 289: my %form;
290: foreach my $pair (split(/&/,$buffer)) {
291: my ($name,$value) = split(/=/,$pair);
1.7 www 292: $value =~ tr/+/ /;
293: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
1.85 albertel 294: $form{$name}=$value;
1.121.2.6 raeburn 295: }
1.1 albertel 296:
1.85 albertel 297: if ((!$form{'uname'}) || (!$form{'upass0'}) || (!$form{'udom'})) {
298: &failed($r,'Username, password and domain need to be specified.',
299: \%form);
1.1 albertel 300: return OK;
301: }
1.61 www 302:
303: # split user logging in and "su"-user
304:
1.85 albertel 305: ($form{'uname'},$form{'suname'})=split(/\:/,$form{'uname'});
1.87 albertel 306: $form{'uname'} = &LONCAPA::clean_username($form{'uname'});
307: $form{'suname'}= &LONCAPA::clean_username($form{'suname'});
308: $form{'udom'} = &LONCAPA::clean_domain( $form{'udom'});
1.1 albertel 309:
310: my $role = $r->dir_config('lonRole');
311: my $domain = $r->dir_config('lonDefDomain');
312: my $prodir = $r->dir_config('lonUsersDir');
1.93 raeburn 313: my $contact_name = &mt('LON-CAPA helpdesk');
1.1 albertel 314:
1.8 www 315: # ---------------------------------------- Get the information from login token
316:
1.85 albertel 317: my $tmpinfo=Apache::lonnet::reply('tmpget:'.$form{'logtoken'},
318: $form{'serverid'});
1.121.2.7 raeburn 319:
1.114 raeburn 320: if (($tmpinfo=~/^error/) || ($tmpinfo eq 'con_lost') ||
321: ($tmpinfo eq 'no_such_host')) {
1.85 albertel 322: &failed($r,'Information needed to verify your login information is missing, inaccessible or expired.',\%form);
1.8 www 323: return OK;
1.44 www 324: } else {
1.85 albertel 325: my $reply = &Apache::lonnet::reply('tmpdel:'.$form{'logtoken'},
326: $form{'serverid'});
1.77 albertel 327: if ( $reply ne 'ok' ) {
1.85 albertel 328: &failed($r,'Session could not be opened.',\%form);
329: &Apache::lonnet::logthis("ERROR got a reply of $reply when trying to contact ". $form{'serverid'}." to get login token");
1.77 albertel 330: return OK;
1.44 www 331: }
1.8 www 332: }
1.100 raeburn 333:
1.93 raeburn 334: if (!&Apache::lonnet::domain($form{'udom'})) {
335: &failed($r,'The domain you provided is not a valid LON-CAPA domain.',\%form);
336: return OK;
337: }
1.100 raeburn 338:
1.121.2.12 raeburn 339: my ($key,$firsturl,$rolestr,$symbstr,$iptokenstr)=split(/&/,$tmpinfo);
1.100 raeburn 340: if ($rolestr) {
341: $rolestr = &unescape($rolestr);
342: }
343: if ($symbstr) {
344: $symbstr= &unescape($symbstr);
345: }
1.121.2.12 raeburn 346: if ($iptokenstr) {
347: $iptokenstr = &unescape($iptokenstr);
348: }
1.100 raeburn 349: if ($rolestr =~ /^role=/) {
350: (undef,$form{'role'}) = split('=',$rolestr);
351: }
352: if ($symbstr =~ /^symb=/) {
353: (undef,$form{'symb'}) = split('=',$symbstr);
354: }
1.121.2.12 raeburn 355: if ($iptokenstr =~ /^iptoken=/) {
356: (undef,$form{'iptoken'}) = split('=',$iptokenstr);
357: }
1.8 www 358:
1.121.2.14! raeburn 359: my $upass = &Apache::loncommon::des_decrypt($key,$form{'upass0'});
1.8 www 360:
1.1 albertel 361: # ---------------------------------------------------------------- Authenticate
1.119 raeburn 362:
1.90 raeburn 363: my %domconfig = &Apache::lonnet::get_dom('configuration',['usercreation'],$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 =
1.121.2.1 raeburn 390: &Apache::loncommon::start_page('Create a user account in LON-CAPA',
391: '',{'no_inline_link' => 1,});
1.93 raeburn 392: my $lonhost = $r->dir_config('lonHostID');
393: my $origmail = $Apache::lonnet::perlvar{'lonSupportEMail'};
394: my $contacts =
395: &Apache::loncommon::build_recipient_list(undef,'helpdeskmail',
396: $form{'udom'},$origmail);
397: my ($contact_email) = split(',',$contacts);
1.119 raeburn 398: my $output =
399: &Apache::createaccount::username_check($form{'uname'},$form{'udom'},
400: $domdesc,'',$lonhost,
401: $contact_email,$contact_name,
402: undef,$statustocreate);
1.90 raeburn 403: &Apache::loncommon::content_type($r,'text/html');
404: $r->send_http_header;
405: &Apache::createaccount::print_header($r,$start_page);
1.94 raeburn 406: $r->print('<h3>'.&mt('Account creation').'</h3>'.
407: &mt('Although your username and password were authenticated, you do not currently have a LON-CAPA account at this institution.').'<br />'.
408: $output.&Apache::loncommon::end_page());
1.90 raeburn 409: return OK;
410: } else {
411: &failed($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);
412: return OK;
413: }
1.1 albertel 414: }
415:
1.59 www 416: if (($firsturl eq '') ||
417: ($firsturl=~/^\/adm\/(logout|remote)/)) {
1.24 www 418: $firsturl='/adm/roles';
1.7 www 419: }
1.121.2.6 raeburn 420:
421: my $hosthere;
422: if ($form{'iptoken'}) {
1.121.2.12 raeburn 423: my %sessiondata = &Apache::lonnet::tmpget($form{'iptoken'});
424: my $delete = &Apache::lonnet::tmpdel($form{'iptoken'});
1.121.2.6 raeburn 425: if (($sessiondata{'domain'} eq $form{'udom'}) &&
426: ($sessiondata{'username'} eq $form{'uname'})) {
427: $hosthere = 1;
428: }
429: }
430:
1.61 www 431: # --------------------------------- Are we attempting to login as somebody else?
1.85 albertel 432: if ($form{'suname'}) {
1.61 www 433: # ------------ see if the original user has enough privileges to pull this stunt
1.85 albertel 434: if (&Apache::lonnet::privileged($form{'uname'},$form{'udom'})) {
1.61 www 435: # ---------------------------------------------------- see if the su-user exists
1.85 albertel 436: unless (&Apache::lonnet::homeserver($form{'suname'},$form{'udom'})
1.61 www 437: eq 'no_host') {
1.85 albertel 438: &Apache::lonnet::logthis(&Apache::lonnet::homeserver($form{'suname'},$form{'udom'}));
1.61 www 439: # ------------------------------ see if the su-user is not too highly privileged
1.85 albertel 440: unless (&Apache::lonnet::privileged($form{'suname'},$form{'udom'})) {
1.61 www 441: # -------------------------------------------------------- actually switch users
1.85 albertel 442: &Apache::lonnet::logperm('User '.$form{'uname'}.' at '.$form{'udom'}.
443: ' logging in as '.$form{'suname'});
444: $form{'uname'}=$form{'suname'};
1.61 www 445: } else {
446: &Apache::lonnet::logthis('Attempted switch user to privileged user');
447: }
448: }
449: } else {
450: &Apache::lonnet::logthis('Non-privileged user attempting switch user');
451: }
452: }
1.85 albertel 453:
1.121.2.6 raeburn 454: my ($is_balancer,$otherserver);
455:
456: unless ($hosthere) {
457: ($is_balancer,$otherserver) =
458: &Apache::lonnet::check_loadbalancing($form{'uname'},$form{'udom'});
459: }
1.117 raeburn 460:
461: if ($is_balancer) {
1.115 raeburn 462: if (!$otherserver) {
1.116 raeburn 463: ($otherserver) = &Apache::lonnet::choose_server($form{'udom'});
1.115 raeburn 464: }
465: if ($otherserver) {
466: &success($r,$form{'uname'},$form{'udom'},$authhost,'noredirect',undef,
467: \%form);
1.121.2.8 raeburn 468: my $switchto = '/adm/switchserver?otherserver='.$otherserver;
469: if (($firsturl) && ($firsturl ne '/adm/switchserver') && ($firsturl ne '/adm/roles')) {
470: $switchto .= '&origurl='.$firsturl;
471: }
472: if ($form{'role'}) {
473: $switchto .= '&role='.$form{'role'};
474: }
475: if ($form{'symb'}) {
476: $switchto .= '&symb='.$form{'symb'};
477: }
478: $r->internal_redirect($switchto);
1.115 raeburn 479: } else {
480: $r->print(&noswitch());
481: }
1.110 raeburn 482: return OK;
1.81 albertel 483: } else {
1.115 raeburn 484: if (!&check_can_host($r,\%form,$authhost)) {
1.118 raeburn 485: my ($otherserver) = &Apache::lonnet::choose_server($form{'udom'});
1.115 raeburn 486: if ($otherserver) {
487: &success($r,$form{'uname'},$form{'udom'},$authhost,'noredirect',undef,
488: \%form);
1.121.2.8 raeburn 489: my $switchto = '/adm/switchserver?otherserver='.$otherserver;
490: if (($firsturl) && ($firsturl ne '/adm/switchserver') && ($firsturl ne '/adm/roles')) {
491: $switchto .= '&origurl='.$firsturl;
492: }
493: if ($form{'role'}) {
494: $switchto .= '&role='.$form{'role'};
495: }
496: if ($form{'symb'}) {
497: $switchto .= '&symb='.$form{'symb'};
498: }
499: $r->internal_redirect($switchto);
1.115 raeburn 500: } else {
501: $r->print(&noswitch());
502: }
503: return OK;
504: }
505:
1.109 raeburn 506: # ------------------------------------------------------- Do the load balancing
507:
508: # ---------------------------------------------------------- Determine own load
509: my $loadlim = $r->dir_config('lonLoadLim');
510: my $loadavg;
511: {
512: my $loadfile=Apache::File->new('/proc/loadavg');
513: $loadavg=<$loadfile>;
514: }
515: $loadavg =~ s/\s.*//g;
516: my $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim);
517: my $userloadpercent=&Apache::lonnet::userload();
518:
519: # ---------------------------------------------------------- Are we overloaded?
520: if ((($userloadpercent>100.0)||($loadpercent>100.0))) {
521: my $unloaded=Apache::lonnet::spareserver($loadpercent,$userloadpercent,1,$form{'udom'});
1.115 raeburn 522: if (!$unloaded) {
1.118 raeburn 523: ($unloaded) = &Apache::lonnet::choose_server($form{'udom'});
1.115 raeburn 524: }
1.109 raeburn 525: if ($unloaded) {
526: &success($r,$form{'uname'},$form{'udom'},$authhost,'noredirect',
527: undef,\%form);
528: $r->internal_redirect('/adm/switchserver?otherserver='.$unloaded.'&origurl='.$firsturl);
1.110 raeburn 529: return OK;
1.109 raeburn 530: }
531: }
532: &success($r,$form{'uname'},$form{'udom'},$authhost,$firsturl,undef,
533: \%form);
1.110 raeburn 534: return OK;
1.81 albertel 535: }
1.1 albertel 536: }
537:
1.105 raeburn 538: sub check_can_host {
539: my ($r,$form,$authhost,$domdesc) = @_;
540: return unless (ref($form) eq 'HASH');
541: my $canhost = 1;
1.106 raeburn 542: my $lonhost = $r->dir_config('lonHostID');
1.105 raeburn 543: my $udom = $form->{'udom'};
1.108 raeburn 544: my @intdoms;
545: my $internet_names = &Apache::lonnet::get_internet_names($lonhost);
546: if (ref($internet_names) eq 'ARRAY') {
547: @intdoms = @{$internet_names};
548: }
1.106 raeburn 549: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
550: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
551: unless ($uint_dom ne '' && grep(/^\Q$uint_dom\E$/,@intdoms)) {
552: my $machine_dom = &Apache::lonnet::host_domain($lonhost);
553: my $hostname = &Apache::lonnet::hostname($lonhost);
554: my $serverhomeID = &Apache::lonnet::get_server_homeID($hostname);
555: my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID);
556: my %defdomdefaults = &Apache::lonnet::get_domain_defaults($serverhomedom);
1.105 raeburn 557: my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
558: my $loncaparev;
559: if ($authhost eq 'no_account_on_host') {
1.106 raeburn 560: $loncaparev = &Apache::lonnet::get_server_loncaparev($machine_dom);
1.105 raeburn 561: } else {
1.106 raeburn 562: $loncaparev = &Apache::lonnet::get_server_loncaparev($machine_dom,$lonhost);
1.105 raeburn 563: }
1.106 raeburn 564: $canhost = &Apache::lonnet::can_host_session($udom,$lonhost,$loncaparev,
565: $udomdefaults{'remotesessions'},
566: $defdomdefaults{'hostedsessions'});
1.105 raeburn 567: }
568: unless ($canhost) {
569: if ($authhost eq 'no_account_on_host') {
1.115 raeburn 570: my $checkloginvia = 1;
571: my ($login_host,$hostname) =
572: &Apache::lonnet::choose_server($udom,$checkloginvia);
1.105 raeburn 573: &Apache::loncommon::content_type($r,'text/html');
574: $r->send_http_header;
575: if ($login_host ne '') {
576: my $protocol = $Apache::lonnet::protocol{$login_host};
577: $protocol = 'http' if ($protocol ne 'https');
578: my $newurl = $protocol.'://'.$hostname.'/adm/createaccount';
579: $r->print(&Apache::loncommon::start_page('Create a user account in LON-CAPA').
580: '<h3>'.&mt('Account creation').'</h3>'.
581: &mt('You do not currently have a LON-CAPA account at this institution.').'<br />'.
582: '<p>'.&mt('You will be able to create one by logging into a LON-CAPA server within the [_1] domain.',$domdesc).'</p>'.
583: '<p>'.&mt('[_1]Log in[_2]','<a href="'.$newurl.'">','</a>').
584: &Apache::loncommon::end_page());
585: } else {
586: $r->print(&Apache::loncommon::start_page('Access to LON-CAPA unavailable').
587: '<h3>'.&mt('Account creation unavailable').'</h3>'.
588: &mt('You do not currently have a LON-CAPA account at this institution.').'<br />'.
589: '<p>'.&mt('Currently a LON-CAPA server is not available within the [_1] domain for you to log-in to, to create an account.',$domdesc).'</p>'.
590: &Apache::loncommon::end_page());
591: }
592: } else {
593: &success($r,$form->{'uname'},$udom,$authhost,'noredirect',undef,
594: $form);
1.107 raeburn 595: my ($otherserver) = &Apache::lonnet::choose_server($udom);
1.105 raeburn 596: $r->internal_redirect('/adm/switchserver?otherserver='.$otherserver);
597: }
598: }
1.110 raeburn 599: return $canhost;
1.105 raeburn 600: }
601:
1.115 raeburn 602: sub noswitch {
603: my $result = &Apache::loncommon::start_page('Access to LON-CAPA unavailable').
604: '<h3>'.&mt('Session unavailable').'</h3>'.
605: &mt('This LON-CAPA server is unable to host your session.').'<br />'.
606: '<p>'.&mt('Currently no other LON-CAPA server is available to host your session either.').'</p>'.
607: &Apache::loncommon::end_page();
608: return $result;
609: }
610:
1.121.2.2 raeburn 611: sub loginhelpdisplay {
612: my ($authdomain) = @_;
613: my $login_help = 1;
614: my $lang = &Apache::lonlocal::current_language();
615: if ($login_help) {
616: my $dom = $authdomain;
617: if ($dom eq '') {
618: $dom = &Apache::lonnet::default_login_domain();
619: }
620: my %domconfhash = &Apache::loncommon::get_domainconf($dom);
621: my $loginhelp_url;
622: if ($lang) {
623: $loginhelp_url = $domconfhash{$dom.'.login.helpurl_'.$lang};
624: if ($loginhelp_url ne '') {
625: return $loginhelp_url;
626: }
627: }
628: $loginhelp_url = $domconfhash{$dom.'.login.helpurl_nolang'};
629: if ($loginhelp_url ne '') {
630: return $loginhelp_url;
631: } else {
632: return '/adm/loginproblems.html';
633: }
634: }
635: return;
636: }
637:
1.1 albertel 638: 1;
639: __END__
1.7 www 640:
641:
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