File:
[LON-CAPA] /
loncom /
auth /
lonlogin.pm
Revision
1.157:
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Sun Sep 29 00:49:24 2013 UTC (10 years, 9 months ago) by
raeburn
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MAIN
CVS tags:
HEAD
- Bug 6675
- Case where $env{'REMOTE_ADDR'} as reported to server selected to host
user session, is different from $env{'REMOTE_ADDR'} as reported to
server which handled original authentication request.
- Domain configuration for a load balancing server can be set to one of
the following, if an IP mismatch is detected by /adm/migrateuser
during credentials checking after redirect via /adm/switchserver
(i) Session will be hosted on Load Balancer
(ii) Session will be hosted on offload server
for each of (a) SSO users from load balancer's domain, (b) non-SSO users
- Setting to host on load balancer will be ignored if switch server was called
by an author or co-author switching to server housing the authoring space.
1: # The LearningOnline Network
2: # Login Screen
3: #
4: # $Id: lonlogin.pm,v 1.157 2013/09/29 00:49:24 raeburn Exp $
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: #
28:
29: package Apache::lonlogin;
30:
31: use strict;
32: use Apache::Constants qw(:common);
33: use Apache::File ();
34: use Apache::lonnet;
35: use Apache::loncommon();
36: use Apache::lonauth();
37: use Apache::lonlocal;
38: use Apache::migrateuser();
39: use lib '/home/httpd/lib/perl/';
40: use LONCAPA;
41:
42: sub handler {
43: my $r = shift;
44:
45: &Apache::loncommon::get_unprocessed_cgi
46: (join('&',$ENV{'QUERY_STRING'},$env{'request.querystring'},
47: $ENV{'REDIRECT_QUERY_STRING'}),
48: ['interface','username','domain','firsturl','localpath','localres',
49: 'token','role','symb','iptoken']);
50: if (!defined($env{'form.firsturl'})) {
51: &Apache::lonacc::get_posted_cgi($r,['firsturl']);
52: }
53:
54: # -- check if they are a migrating user
55: if (defined($env{'form.token'})) {
56: return &Apache::migrateuser::handler($r);
57: }
58:
59: &Apache::loncommon::no_cache($r);
60: &Apache::lonlocal::get_language_handle($r);
61: &Apache::loncommon::content_type($r,'text/html');
62: $r->send_http_header;
63: return OK if $r->header_only;
64:
65:
66: # Are we re-routing?
67: my $londocroot = $r->dir_config('lonDocRoot');
68: if (-e "$londocroot/lon-status/reroute.txt") {
69: &Apache::lonauth::reroute($r);
70: return OK;
71: }
72:
73: $env{'form.firsturl'} =~ s/(`)/'/g;
74:
75: # -------------------------------- Prevent users from attempting to login twice
76: my $handle = &Apache::lonnet::check_for_valid_session($r);
77: if ($handle ne '') {
78: my $lonidsdir=$r->dir_config('lonIDsDir');
79: if ($handle=~/^publicuser\_/) {
80: # For "public user" - remove it, we apparently really want to login
81: unlink($r->dir_config('lonIDsDir')."/$handle.id");
82: } else {
83: # Indeed, a valid token is found
84: &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
85: my $start_page =
86: &Apache::loncommon::start_page('Already logged in');
87: my $end_page =
88: &Apache::loncommon::end_page();
89: my $dest = '/adm/roles';
90: if ($env{'form.firsturl'} ne '') {
91: $dest = $env{'form.firsturl'};
92: }
93: $r->print(
94: $start_page
95: .'<p class="LC_warning">'.&mt('You are already logged in!').'</p>'
96: .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].',
97: '<a href="'.$dest.'">','</a>','<a href="/adm/logout">','</a>').'</p>'
98: .$end_page
99: );
100: return OK;
101: }
102: }
103:
104: # ---------------------------------------------------- No valid token, continue
105:
106: # ---------------------------- Not possible to really login to domain "public"
107: if ($env{'form.domain'} eq 'public') {
108: $env{'form.domain'}='';
109: $env{'form.username'}='';
110: }
111:
112: # ------ Is this page requested because /adm/migrateuser detected an IP change?
113: my %sessiondata;
114: if ($env{'form.iptoken'}) {
115: %sessiondata = &Apache::lonnet::tmpget($env{'form.iptoken'});
116: my $delete = &Apache::lonnet::tmpdel($env{'form.token'});
117: }
118: # ----------------------------------------------------------- Process Interface
119: $env{'form.interface'}=~s/\W//g;
120:
121: (undef,undef,undef,undef,undef,undef,my $clientmobile) =
122: &Apache::loncommon::decode_user_agent();
123:
124: my $iconpath=
125: &Apache::loncommon::lonhttpdurl($r->dir_config('lonIconsURL'));
126:
127: my $lonhost = $r->dir_config('lonHostID');
128: my $domain = &Apache::lonnet::default_login_domain();
129: if ($lonhost ne '') {
130: unless ($sessiondata{'sessionserver'}) {
131: my $redirect = &check_loginvia($domain,$lonhost);
132: if ($redirect) {
133: $r->print($redirect);
134: return OK;
135: }
136: }
137: }
138:
139: if (($sessiondata{'domain'}) &&
140: (&Apache::lonnet::domain($env{'form.domain'},'description'))) {
141: $domain=$sessiondata{'domain'};
142: } elsif (($env{'form.domain'}) &&
143: (&Apache::lonnet::domain($env{'form.domain'},'description'))) {
144: $domain=$env{'form.domain'};
145: }
146:
147: my $role = $r->dir_config('lonRole');
148: my $loadlim = $r->dir_config('lonLoadLim');
149: my $uloadlim= $r->dir_config('lonUserLoadLim');
150: my $servadm = $r->dir_config('lonAdmEMail');
151: my $tabdir = $r->dir_config('lonTabDir');
152: my $include = $r->dir_config('lonIncludes');
153: my $expire = $r->dir_config('lonExpire');
154: my $version = $r->dir_config('lonVersion');
155: my $host_name = &Apache::lonnet::hostname($lonhost);
156:
157: # --------------------------------------------- Default values for login fields
158:
159: my ($authusername,$authdomain);
160: if ($sessiondata{'username'}) {
161: $authusername=$sessiondata{'username'};
162: } else {
163: $authusername=($env{'form.username'}?$env{'form.username'}:'');
164: }
165: if ($sessiondata{'domain'}) {
166: $authdomain=$sessiondata{'domain'};
167: } else {
168: $authdomain=($env{'form.domain'}?$env{'form.domain'}:$domain);
169: }
170:
171: # ---------------------------------------------------------- Determine own load
172: my $loadavg;
173: {
174: my $loadfile=Apache::File->new('/proc/loadavg');
175: $loadavg=<$loadfile>;
176: }
177: $loadavg =~ s/\s.*//g;
178:
179: my ($loadpercent,$userloadpercent);
180: if ($loadlim) {
181: $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim);
182: }
183: if ($uloadlim) {
184: $userloadpercent=&Apache::lonnet::userload();
185: }
186:
187: my $firsturl=
188: ($env{'request.firsturl'}?$env{'request.firsturl'}:$env{'form.firsturl'});
189:
190: # ----------------------------------------------------------- Get announcements
191: my $announcements=&Apache::lonnet::getannounce();
192: # -------------------------------------------------------- Set login parameters
193:
194: my @hexstr=('0','1','2','3','4','5','6','7',
195: '8','9','a','b','c','d','e','f');
196: my $lkey='';
197: for (0..7) {
198: $lkey.=$hexstr[rand(15)];
199: }
200:
201: my $ukey='';
202: for (0..7) {
203: $ukey.=$hexstr[rand(15)];
204: }
205:
206: my $lextkey=hex($lkey);
207: if ($lextkey>2147483647) { $lextkey-=4294967296; }
208:
209: my $uextkey=hex($ukey);
210: if ($uextkey>2147483647) { $uextkey-=4294967296; }
211:
212: # -------------------------------------------------------- Store away log token
213: my $tokenextras;
214: if ($env{'form.role'}) {
215: $tokenextras = '&role='.&escape($env{'form.role'});
216: }
217: if ($env{'form.symb'}) {
218: if (!$tokenextras) {
219: $tokenextras = '&';
220: }
221: $tokenextras .= '&symb='.&escape($env{'form.symb'});
222: }
223: my $logtoken=Apache::lonnet::reply(
224: 'tmpput:'.$ukey.$lkey.'&'.$firsturl.$tokenextras,
225: $lonhost);
226:
227: # -- If we cannot talk to ourselves, or hostID does not map to a hostname
228: # we are in serious trouble
229:
230: if (($logtoken eq 'con_lost') || ($logtoken eq 'no_such_host')) {
231: if ($logtoken eq 'no_such_host') {
232: &Apache::lonnet::logthis('No valid logtoken for log-in page -- unable to determine hostname for hostID: '.$lonhost.'. Check entry in hosts.tab');
233: }
234: my $spares='';
235: my $last;
236: foreach my $hostid (sort
237: {
238: &Apache::lonnet::hostname($a) cmp
239: &Apache::lonnet::hostname($b);
240: }
241: keys(%Apache::lonnet::spareid)) {
242: next if ($hostid eq $lonhost);
243: my $hostname = &Apache::lonnet::hostname($hostid);
244: next if (($last eq $hostname) || ($hostname eq ''));
245: $spares.='<br /><font size="+1"><a href="http://'.
246: $hostname.
247: '/adm/login?domain='.$authdomain.'">'.
248: $hostname.'</a>'.
249: ' '.&mt('(preferred)').'</font>'.$/;
250: $last=$hostname;
251: }
252: if ($spares) {
253: $spares.= '<br />';
254: }
255: my %all_hostnames = &Apache::lonnet::all_hostnames();
256: foreach my $hostid (sort
257: {
258: &Apache::lonnet::hostname($a) cmp
259: &Apache::lonnet::hostname($b);
260: }
261: keys(%all_hostnames)) {
262: next if ($hostid eq $lonhost || $Apache::lonnet::spareid{$hostid});
263: my $hostname = &Apache::lonnet::hostname($hostid);
264: next if (($last eq $hostname) || ($hostname eq ''));
265: $spares.='<br /><a href="http://'.
266: $hostname.
267: '/adm/login?domain='.$authdomain.'">'.
268: $hostname.'</a>';
269: $last=$hostname;
270: }
271: $r->print(
272: '<html>'
273: .'<head><title>'
274: .&mt('The LearningOnline Network with CAPA')
275: .'</title></head>'
276: .'<body bgcolor="#FFFFFF">'
277: .'<h1>'.&mt('The LearningOnline Network with CAPA').'</h1>'
278: .'<img src="/adm/lonKaputt/lonlogo_broken.gif" align="right" />'
279: .'<h3>'.&mt('This LON-CAPA server is temporarily not available for login.').'</h3>');
280: if ($spares) {
281: $r->print('<p>'.&mt('Please attempt to login to one of the following servers:')
282: .'</p>'
283: .$spares);
284: }
285: $r->print('</body>'
286: .'</html>'
287: );
288: return OK;
289: }
290:
291: # ----------------------------------------------- Apparently we are in business
292: $servadm=~s/\,/\<br \/\>/g;
293:
294: # ----------------------------------------------------------- Front page design
295: my $pgbg=&Apache::loncommon::designparm('login.pgbg',$domain);
296: my $font=&Apache::loncommon::designparm('login.font',$domain);
297: my $link=&Apache::loncommon::designparm('login.link',$domain);
298: my $vlink=&Apache::loncommon::designparm('login.vlink',$domain);
299: my $alink=&Apache::loncommon::designparm('login.alink',$domain);
300: my $mainbg=&Apache::loncommon::designparm('login.mainbg',$domain);
301: my $loginbox_bg=&Apache::loncommon::designparm('login.sidebg',$domain);
302: my $loginbox_header_bgcol=&Apache::loncommon::designparm('login.bgcol',$domain);
303: my $loginbox_header_textcol=&Apache::loncommon::designparm('login.textcol',$domain);
304: my $logo=&Apache::loncommon::designparm('login.logo',$domain);
305: my $img=&Apache::loncommon::designparm('login.img',$domain);
306: my $domainlogo=&Apache::loncommon::domainlogo($domain);
307: my $showbanner = 1;
308: my $showmainlogo = 1;
309: if (defined(&Apache::loncommon::designparm('login.showlogo_img',$domain))) {
310: $showbanner = &Apache::loncommon::designparm('login.showlogo_img',$domain);
311: }
312: if (defined(&Apache::loncommon::designparm('login.showlogo_logo',$domain))) {
313: $showmainlogo = &Apache::loncommon::designparm('login.showlogo_logo',$domain);
314: }
315: my $showadminmail;
316: my @possdoms = &Apache::lonnet::current_machine_domains();
317: if (grep(/^\Q$domain\E$/,@possdoms)) {
318: $showadminmail=&Apache::loncommon::designparm('login.adminmail',$domain);
319: }
320: my $showcoursecat =
321: &Apache::loncommon::designparm('login.coursecatalog',$domain);
322: my $shownewuserlink =
323: &Apache::loncommon::designparm('login.newuser',$domain);
324: my $showhelpdesk =
325: &Apache::loncommon::designparm('login.helpdesk',$domain);
326: my $now=time;
327: my $js = (<<ENDSCRIPT);
328:
329: <script type="text/javascript" language="JavaScript">
330: // <![CDATA[
331: function send()
332: {
333: this.document.server.elements.uname.value
334: =this.document.client.elements.uname.value;
335:
336: this.document.server.elements.udom.value
337: =this.document.client.elements.udom.value;
338:
339: uextkey=this.document.client.elements.uextkey.value;
340: lextkey=this.document.client.elements.lextkey.value;
341: initkeys();
342:
343: this.document.server.elements.upass0.value
344: =crypted(this.document.client.elements.upass$now.value.substr(0,15));
345: this.document.server.elements.upass1.value
346: =crypted(this.document.client.elements.upass$now.value.substr(15,15));
347: this.document.server.elements.upass2.value
348: =crypted(this.document.client.elements.upass$now.value.substr(30,15));
349:
350: this.document.client.elements.uname.value='';
351: this.document.client.elements.upass$now.value='';
352:
353: this.document.server.submit();
354: return false;
355: }
356:
357: function enableInput() {
358: this.document.client.elements.upass$now.removeAttribute("readOnly");
359: this.document.client.elements.uname.removeAttribute("readOnly");
360: this.document.client.elements.udom.removeAttribute("readOnly");
361: return;
362: }
363:
364: // ]]>
365: </script>
366:
367: ENDSCRIPT
368:
369: # --------------------------------------------------- Print login screen header
370:
371: my %add_entries = (
372: bgcolor => "$mainbg",
373: text => "$font",
374: link => "$link",
375: vlink => "$vlink",
376: alink => "$alink",
377: onload => 'javascript:enableInput();',);
378:
379: $r->print(&Apache::loncommon::start_page('The LearningOnline Network with CAPA Login',$js,
380: { 'redirect' => [$expire,'/adm/roles'],
381: 'add_entries' => \%add_entries,
382: 'only_body' => 1,}));
383:
384: # ----------------------------------------------------------------------- Texts
385:
386: my %lt=&Apache::lonlocal::texthash(
387: 'un' => 'Username',
388: 'pw' => 'Password',
389: 'dom' => 'Domain',
390: 'perc' => 'percent',
391: 'load' => 'Server Load',
392: 'userload' => 'User Load',
393: 'catalog' => 'Course/Community Catalog',
394: 'log' => 'Log in',
395: 'help' => 'Log-in Help',
396: 'serv' => 'Server',
397: 'servadm' => 'Server Administration',
398: 'helpdesk' => 'Contact Helpdesk',
399: 'forgotpw' => 'Forgot password?',
400: 'newuser' => 'New User?',
401: );
402: # -------------------------------------------------- Change password field name
403:
404: my $forgotpw = &forgotpwdisplay(%lt);
405: $forgotpw .= '<br />' if $forgotpw;
406: my $loginhelp = &Apache::lonauth::loginhelpdisplay($authdomain);
407: if ($loginhelp) {
408: $loginhelp = '<a href="'.$loginhelp.'">'.$lt{'help'}.'</a><br />';
409: }
410:
411: # ---------------------------------------------------- Serve out DES JavaScript
412: {
413: my $jsh=Apache::File->new($include."/londes.js");
414: $r->print(<$jsh>);
415: }
416: # ---------------------------------------------------------- Serve rest of page
417:
418: $r->print(
419: '<div class="LC_Box"'
420: .' style="margin:0 auto; padding:10px; width:90%; height: auto; background-color:#FFFFFF;">'
421: );
422:
423: $r->print(<<ENDSERVERFORM);
424: <form name="server" action="/adm/authenticate" method="post" target="_top">
425: <input type="hidden" name="logtoken" value="$logtoken" />
426: <input type="hidden" name="serverid" value="$lonhost" />
427: <input type="hidden" name="uname" value="" />
428: <input type="hidden" name="upass0" value="" />
429: <input type="hidden" name="upass1" value="" />
430: <input type="hidden" name="upass2" value="" />
431: <input type="hidden" name="udom" value="" />
432: <input type="hidden" name="localpath" value="$env{'form.localpath'}" />
433: <input type="hidden" name="localres" value="$env{'form.localres'}" />
434: </form>
435: ENDSERVERFORM
436: my $coursecatalog;
437: if (($showcoursecat eq '') || ($showcoursecat)) {
438: $coursecatalog = &coursecatalog_link($lt{'catalog'}).'<br />';
439: }
440: my $newuserlink;
441: if ($shownewuserlink) {
442: $newuserlink = &newuser_link($lt{'newuser'}).'<br />';
443: }
444: my $logintitle =
445: '<h2 class="LC_hcell"'
446: .' style="background:'.$loginbox_header_bgcol.';'
447: .' color:'.$loginbox_header_textcol.'">'
448: .$lt{'log'}
449: .'</h2>';
450:
451: my $noscript_warning='<noscript><span class="LC_warning"><b>'
452: .&mt('Use of LON-CAPA requires Javascript to be enabled in your web browser.')
453: .'</b></span></noscript>';
454: my $helpdeskscript;
455: my $contactblock = &contactdisplay(\%lt,$servadm,$showadminmail,
456: $authdomain,\$helpdeskscript,
457: $showhelpdesk,\@possdoms);
458:
459: my $mobileargs;
460: if ($clientmobile) {
461: $mobileargs = 'autocapitalize="off" autocorrect="off"';
462: }
463: my $loginform=(<<LFORM);
464: <form name="client" action="" onsubmit="return(send())">
465: <input type="hidden" name="lextkey" value="$lextkey" />
466: <input type="hidden" name="uextkey" value="$uextkey" />
467: <b><label for="uname">$lt{'un'}</label>:</b><br />
468: <input type="text" name="uname" id="uname" size="15" value="$authusername" readonly="readonly" $mobileargs /><br />
469: <b><label for="upass$now">$lt{'pw'}</label>:</b><br />
470: <input type="password" name="upass$now" id="upass$now" size="15" readonly="readonly" /><br />
471: <b><label for="udom">$lt{'dom'}</label>:</b><br />
472: <input type="text" name="udom" id="udom" size="15" value="$authdomain" readonly="readonly" $mobileargs /><br />
473: <input type="submit" value="$lt{'log'}" />
474: </form>
475: LFORM
476:
477: if ($showbanner) {
478: $r->print(<<HEADER);
479: <!-- The LON-CAPA Header -->
480: <div style="background:$pgbg;margin:0;width:100%;">
481: <img src="$img" border="0" alt="The Learning Online Network with CAPA" />
482: </div>
483: HEADER
484: }
485: $r->print(<<ENDTOP);
486: <div style="float:left;margin-top:0;">
487: <div class="LC_Box" style="background:$loginbox_bg;">
488: $logintitle
489: $loginform
490: $noscript_warning
491: </div>
492:
493: <div class="LC_Box" style="padding-top: 10px;">
494: $loginhelp
495: $forgotpw
496: $contactblock
497: $newuserlink
498: $coursecatalog
499: </div>
500: </div>
501:
502: <div>
503: ENDTOP
504: if ($showmainlogo) {
505: $r->print(' <img src="'.$logo.'" alt="" />'."\n");
506: }
507: $r->print(<<ENDTOP);
508: $announcements
509: </div>
510: <hr style="clear:both;" />
511: ENDTOP
512: my ($domainrow,$serverrow,$loadrow,$userloadrow,$versionrow);
513: $domainrow = <<"END";
514: <tr>
515: <td align="left" valign="top">
516: <small><b>$lt{'dom'}: </b></small>
517: </td>
518: <td align="left" valign="top">
519: <small><tt> $domain</tt></small>
520: </td>
521: </tr>
522: END
523: $serverrow = <<"END";
524: <tr>
525: <td align="left" valign="top">
526: <small><b>$lt{'serv'}: </b></small>
527: </td>
528: <td align="left" valign="top">
529: <small><tt> $lonhost ($role)</tt></small>
530: </td>
531: </tr>
532: END
533: if ($loadlim) {
534: $loadrow = <<"END";
535: <tr>
536: <td align="left" valign="top">
537: <small><b>$lt{'load'}: </b></small>
538: </td>
539: <td align="left" valign="top">
540: <small><tt> $loadpercent $lt{'perc'}</tt></small>
541: </td>
542: </tr>
543: END
544: }
545: if ($uloadlim) {
546: $userloadrow = <<"END";
547: <tr>
548: <td align="left" valign="top">
549: <small><b>$lt{'userload'}: </b></small>
550: </td>
551: <td align="left" valign="top">
552: <small><tt> $userloadpercent $lt{'perc'}</tt></small>
553: </td>
554: </tr>
555: END
556: }
557: if (($version ne '') && ($version ne '<!-- VERSION -->')) {
558: $versionrow = <<"END";
559: <tr>
560: <td colspan="2" align="left">
561: <small>$version</small>
562: </td>
563: </tr>
564: END
565: }
566:
567: $r->print(<<ENDDOCUMENT);
568: <div style="float: left;">
569: <table border="0" cellspacing="0" cellpadding="0">
570: $domainrow
571: $serverrow
572: $loadrow
573: $userloadrow
574: $versionrow
575: </table>
576: </div>
577: <div style="float: right;">
578: $domainlogo
579: </div>
580: <br style="clear:both;" />
581: </div>
582:
583: <script type="text/javascript">
584: // <![CDATA[
585: // the if prevents the script error if the browser can not handle this
586: if ( document.client.uname ) { document.client.uname.focus(); }
587: // ]]>
588: </script>
589: $helpdeskscript
590:
591: ENDDOCUMENT
592: my %endargs = ( 'noredirectlink' => 1, );
593: $r->print(&Apache::loncommon::end_page(\%endargs));
594: return OK;
595: }
596:
597: sub check_loginvia {
598: my ($domain,$lonhost) = @_;
599: if ($domain eq '' || $lonhost eq '') {
600: return;
601: }
602: my %domconfhash = &Apache::loncommon::get_domainconf($domain);
603: my $loginvia = $domconfhash{$domain.'.login.loginvia_'.$lonhost};
604: my $loginvia_exempt = $domconfhash{$domain.'.login.loginvia_exempt_'.$lonhost};
605: my $output;
606: if ($loginvia ne '') {
607: my $noredirect;
608: my $ip = $ENV{'REMOTE_ADDR'};
609: if ($ip eq '127.0.0.1') {
610: $noredirect = 1;
611: } else {
612: if ($loginvia_exempt ne '') {
613: my @exempt = split(',',$loginvia_exempt);
614: if (grep(/^\Q$ip\E$/,@exempt)) {
615: $noredirect = 1;
616: }
617: }
618: }
619: unless ($noredirect) {
620: my ($newhost,$path);
621: if ($loginvia =~ /:/) {
622: ($newhost,$path) = split(':',$loginvia);
623: } else {
624: $newhost = $loginvia;
625: }
626: if ($newhost ne $lonhost) {
627: if (&Apache::lonnet::hostname($newhost) ne '') {
628: $output = &redirect_page($newhost,$path);
629: }
630: }
631: }
632: }
633: return $output;
634: }
635:
636: sub redirect_page {
637: my ($desthost,$path) = @_;
638: my $protocol = $Apache::lonnet::protocol{$desthost};
639: $protocol = 'http' if ($protocol ne 'https');
640: unless ($path =~ m{^/}) {
641: $path = '/'.$path;
642: }
643: my $url = $protocol.'://'.&Apache::lonnet::hostname($desthost).$path;
644: if ($env{'form.firsturl'} ne '') {
645: $url .='?firsturl='.$env{'form.firsturl'};
646: }
647: my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef,
648: {'redirect' => [0,$url],});
649: my $end_page = &Apache::loncommon::end_page();
650: return $start_page.$end_page;
651: }
652:
653: sub contactdisplay {
654: my ($lt,$servadm,$showadminmail,$authdomain,$helpdeskscript,$showhelpdesk,
655: $possdoms) = @_;
656: my $contactblock;
657: my $origmail;
658: if (ref($possdoms) eq 'ARRAY') {
659: if (grep(/^\Q$authdomain\E$/,@{$possdoms})) {
660: $origmail = $Apache::lonnet::perlvar{'lonSupportEMail'};
661: }
662: }
663: my $requestmail =
664: &Apache::loncommon::build_recipient_list(undef,'helpdeskmail',
665: $authdomain,$origmail);
666: unless ($showhelpdesk eq '0') {
667: if ($requestmail =~ m/[^\@]+\@[^\@]+/) {
668: $showhelpdesk = 1;
669: } else {
670: $showhelpdesk = 0;
671: }
672: }
673: if ($servadm && $showadminmail) {
674: $contactblock .= $$lt{'servadm'}.':<br />'.
675: '<tt>'.$servadm.'</tt><br />';
676: }
677: if ($showhelpdesk) {
678: $contactblock .= '<a href="javascript:helpdesk()">'.$lt->{'helpdesk'}.'</a><br />';
679: my $thisurl = &escape('/adm/login');
680: $$helpdeskscript = <<"ENDSCRIPT";
681: <script type="text/javascript">
682: // <![CDATA[
683: function helpdesk() {
684: var possdom = document.client.udom.value;
685: var codedom = possdom.replace( new RegExp("[^A-Za-z0-9.\\-]","g"),'');
686: if (codedom == '') {
687: codedom = "$authdomain";
688: }
689: var querystr = "origurl=$thisurl&codedom="+codedom;
690: document.location.href = "/adm/helpdesk?"+querystr;
691: return;
692: }
693: // ]]>
694: </script>
695: ENDSCRIPT
696: }
697: return $contactblock;
698: }
699:
700: sub forgotpwdisplay {
701: my (%lt) = @_;
702: my $prompt_for_resetpw = 1;
703: if ($prompt_for_resetpw) {
704: return '<a href="/adm/resetpw">'.$lt{'forgotpw'}.'</a>';
705: }
706: return;
707: }
708:
709: sub coursecatalog_link {
710: my ($linkname) = @_;
711: return <<"END";
712: <a href="/adm/coursecatalog">$linkname</a>
713: END
714: }
715:
716: sub newuser_link {
717: my ($linkname) = @_;
718: return '<a href="/adm/createaccount">'.$linkname.'</a>';
719: }
720:
721: 1;
722: __END__
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