1: # The LearningOnline Network
2: # Login Screen
3: #
4: # $Id: lonlogin.pm,v 1.170 2017/02/25 19:56:09 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: use CGI::Cookie();
42:
43: sub handler {
44: my $r = shift;
45:
46: &Apache::loncommon::get_unprocessed_cgi
47: (join('&',$ENV{'QUERY_STRING'},$env{'request.querystring'},
48: $ENV{'REDIRECT_QUERY_STRING'}),
49: ['interface','username','domain','firsturl','localpath','localres',
50: 'token','role','symb','iptoken']);
51: if (!defined($env{'form.firsturl'})) {
52: &Apache::lonacc::get_posted_cgi($r,['firsturl']);
53: }
54:
55: # -- check if they are a migrating user
56: if (defined($env{'form.token'})) {
57: return &Apache::migrateuser::handler($r);
58: }
59:
60: # For "public user" - remove any exising "public" cookie, as user really wants to log-in
61: my ($handle,$lonidsdir,$expire);
62: unless ($r->header_only) {
63: $handle = &Apache::lonnet::check_for_valid_session($r);
64: if ($handle ne '') {
65: $lonidsdir=$r->dir_config('lonIDsDir');
66: if ($handle=~/^publicuser\_/) {
67: unlink($r->dir_config('lonIDsDir')."/$handle.id");
68: undef($handle);
69: $expire = 1;
70: }
71: }
72: }
73:
74: &Apache::loncommon::no_cache($r);
75: &Apache::lonlocal::get_language_handle($r);
76: &Apache::loncommon::content_type($r,'text/html');
77: if ($expire) {
78: my $c = new CGI::Cookie(-name => 'lonPubID',
79: -value => '',
80: -expires => '-10y',);
81: $r->header_out('Set-cookie' => $c);
82: }
83: $r->send_http_header;
84: return OK if $r->header_only;
85:
86:
87: # Are we re-routing?
88: my $londocroot = $r->dir_config('lonDocRoot');
89: if (-e "$londocroot/lon-status/reroute.txt") {
90: &Apache::lonauth::reroute($r);
91: return OK;
92: }
93:
94: $env{'form.firsturl'} =~ s/(`)/'/g;
95:
96: # -------------------------------- Prevent users from attempting to login twice
97: if ($handle ne '') {
98: &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
99: my $start_page =
100: &Apache::loncommon::start_page('Already logged in');
101: my $end_page =
102: &Apache::loncommon::end_page();
103: my $dest = '/adm/roles';
104: if ($env{'form.firsturl'} ne '') {
105: $dest = $env{'form.firsturl'};
106: }
107: $r->print(
108: $start_page
109: .'<p class="LC_warning">'.&mt('You are already logged in!').'</p>'
110: .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].',
111: '<a href="'.$dest.'">','</a>','<a href="/adm/logout">','</a>').'</p>'
112: .$end_page
113: );
114: return OK;
115: }
116:
117: # ---------------------------------------------------- No valid token, continue
118:
119: # ---------------------------- Not possible to really login to domain "public"
120: if ($env{'form.domain'} eq 'public') {
121: $env{'form.domain'}='';
122: $env{'form.username'}='';
123: }
124:
125: # ------ Is this page requested because /adm/migrateuser detected an IP change?
126: my %sessiondata;
127: if ($env{'form.iptoken'}) {
128: %sessiondata = &Apache::lonnet::tmpget($env{'form.iptoken'});
129: unless ($sessiondata{'sessionserver'}) {
130: my $delete = &Apache::lonnet::tmpdel($env{'form.iptoken'});
131: delete($env{'form.iptoken'});
132: }
133: }
134: # ----------------------------------------------------------- Process Interface
135: $env{'form.interface'}=~s/\W//g;
136:
137: (undef,undef,undef,undef,undef,undef,my $clientmobile) =
138: &Apache::loncommon::decode_user_agent();
139:
140: my $iconpath=
141: &Apache::loncommon::lonhttpdurl($r->dir_config('lonIconsURL'));
142:
143: my $lonhost = $r->dir_config('lonHostID');
144: my $domain = &Apache::lonnet::default_login_domain();
145: my $defdom = $domain;
146: if ($lonhost ne '') {
147: unless ($sessiondata{'sessionserver'}) {
148: my $redirect = &check_loginvia($domain,$lonhost);
149: if ($redirect) {
150: $r->print($redirect);
151: return OK;
152: }
153: }
154: }
155:
156: if (($sessiondata{'domain'}) &&
157: (&Apache::lonnet::domain($env{'form.domain'},'description'))) {
158: $domain=$sessiondata{'domain'};
159: } elsif (($env{'form.domain'}) &&
160: (&Apache::lonnet::domain($env{'form.domain'},'description'))) {
161: $domain=$env{'form.domain'};
162: }
163:
164: my $role = $r->dir_config('lonRole');
165: my $loadlim = $r->dir_config('lonLoadLim');
166: my $uloadlim= $r->dir_config('lonUserLoadLim');
167: my $servadm = $r->dir_config('lonAdmEMail');
168: my $tabdir = $r->dir_config('lonTabDir');
169: my $include = $r->dir_config('lonIncludes');
170: my $expire = $r->dir_config('lonExpire');
171: my $version = $r->dir_config('lonVersion');
172: my $host_name = &Apache::lonnet::hostname($lonhost);
173:
174: # --------------------------------------------- Default values for login fields
175:
176: my ($authusername,$authdomain);
177: if ($sessiondata{'username'}) {
178: $authusername=$sessiondata{'username'};
179: } else {
180: $env{'form.username'} = &Apache::loncommon::cleanup_html($env{'form.username'});
181: $authusername=($env{'form.username'}?$env{'form.username'}:'');
182: }
183: if ($sessiondata{'domain'}) {
184: $authdomain=$sessiondata{'domain'};
185: } else {
186: $env{'form.domain'} = &Apache::loncommon::cleanup_html($env{'form.domain'});
187: $authdomain=($env{'form.domain'}?$env{'form.domain'}:$domain);
188: }
189:
190: # ---------------------------------------------------------- Determine own load
191: my $loadavg;
192: {
193: my $loadfile=Apache::File->new('/proc/loadavg');
194: $loadavg=<$loadfile>;
195: }
196: $loadavg =~ s/\s.*//g;
197:
198: my ($loadpercent,$userloadpercent);
199: if ($loadlim) {
200: $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim);
201: }
202: if ($uloadlim) {
203: $userloadpercent=&Apache::lonnet::userload();
204: }
205:
206: my $firsturl=
207: ($env{'request.firsturl'}?$env{'request.firsturl'}:$env{'form.firsturl'});
208:
209: # ----------------------------------------------------------- Get announcements
210: my $announcements=&Apache::lonnet::getannounce();
211: # -------------------------------------------------------- Set login parameters
212:
213: my @hexstr=('0','1','2','3','4','5','6','7',
214: '8','9','a','b','c','d','e','f');
215: my $lkey='';
216: for (0..7) {
217: $lkey.=$hexstr[rand(15)];
218: }
219:
220: my $ukey='';
221: for (0..7) {
222: $ukey.=$hexstr[rand(15)];
223: }
224:
225: my $lextkey=hex($lkey);
226: if ($lextkey>2147483647) { $lextkey-=4294967296; }
227:
228: my $uextkey=hex($ukey);
229: if ($uextkey>2147483647) { $uextkey-=4294967296; }
230:
231: # -------------------------------------------------------- Store away log token
232: my $tokenextras;
233: if ($env{'form.role'}) {
234: $tokenextras = '&role='.&escape($env{'form.role'});
235: }
236: if ($env{'form.symb'}) {
237: if (!$tokenextras) {
238: $tokenextras = '&';
239: }
240: $tokenextras .= '&symb='.&escape($env{'form.symb'});
241: }
242: if ($env{'form.iptoken'}) {
243: if (!$tokenextras) {
244: $tokenextras = '&&';
245: }
246: $tokenextras .= '&iptoken='.&escape($env{'form.iptoken'});
247: }
248: my $logtoken=Apache::lonnet::reply(
249: 'tmpput:'.$ukey.$lkey.'&'.$firsturl.$tokenextras,
250: $lonhost);
251:
252: # -- If we cannot talk to ourselves, or hostID does not map to a hostname
253: # we are in serious trouble
254:
255: if (($logtoken eq 'con_lost') || ($logtoken eq 'no_such_host')) {
256: if ($logtoken eq 'no_such_host') {
257: &Apache::lonnet::logthis('No valid logtoken for log-in page -- unable to determine hostname for hostID: '.$lonhost.'. Check entry in hosts.tab');
258: }
259: my $spares='';
260: my $last;
261: foreach my $hostid (sort
262: {
263: &Apache::lonnet::hostname($a) cmp
264: &Apache::lonnet::hostname($b);
265: }
266: keys(%Apache::lonnet::spareid)) {
267: next if ($hostid eq $lonhost);
268: my $hostname = &Apache::lonnet::hostname($hostid);
269: next if (($last eq $hostname) || ($hostname eq ''));
270: $spares.='<br /><font size="+1"><a href="http://'.
271: $hostname.
272: '/adm/login?domain='.$authdomain.'">'.
273: $hostname.'</a>'.
274: ' '.&mt('(preferred)').'</font>'.$/;
275: $last=$hostname;
276: }
277: if ($spares) {
278: $spares.= '<br />';
279: }
280: my %all_hostnames = &Apache::lonnet::all_hostnames();
281: foreach my $hostid (sort
282: {
283: &Apache::lonnet::hostname($a) cmp
284: &Apache::lonnet::hostname($b);
285: }
286: keys(%all_hostnames)) {
287: next if ($hostid eq $lonhost || $Apache::lonnet::spareid{$hostid});
288: my $hostname = &Apache::lonnet::hostname($hostid);
289: next if (($last eq $hostname) || ($hostname eq ''));
290: $spares.='<br /><a href="http://'.
291: $hostname.
292: '/adm/login?domain='.$authdomain.'">'.
293: $hostname.'</a>';
294: $last=$hostname;
295: }
296: $r->print(
297: '<html>'
298: .'<head><title>'
299: .&mt('The LearningOnline Network with CAPA')
300: .'</title></head>'
301: .'<body bgcolor="#FFFFFF">'
302: .'<h1>'.&mt('The LearningOnline Network with CAPA').'</h1>'
303: .'<img src="/adm/lonKaputt/lonlogo_broken.gif" align="right" />'
304: .'<h3>'.&mt('This LON-CAPA server is temporarily not available for login.').'</h3>');
305: if ($spares) {
306: $r->print('<p>'.&mt('Please attempt to login to one of the following servers:')
307: .'</p>'
308: .$spares);
309: }
310: $r->print('</body>'
311: .'</html>'
312: );
313: return OK;
314: }
315:
316: # ----------------------------------------------- Apparently we are in business
317: $servadm=~s/\,/\<br \/\>/g;
318:
319: # ----------------------------------------------------------- Front page design
320: my $pgbg=&Apache::loncommon::designparm('login.pgbg',$domain);
321: my $font=&Apache::loncommon::designparm('login.font',$domain);
322: my $link=&Apache::loncommon::designparm('login.link',$domain);
323: my $vlink=&Apache::loncommon::designparm('login.vlink',$domain);
324: my $alink=&Apache::loncommon::designparm('login.alink',$domain);
325: my $mainbg=&Apache::loncommon::designparm('login.mainbg',$domain);
326: my $loginbox_bg=&Apache::loncommon::designparm('login.sidebg',$domain);
327: my $loginbox_header_bgcol=&Apache::loncommon::designparm('login.bgcol',$domain);
328: my $loginbox_header_textcol=&Apache::loncommon::designparm('login.textcol',$domain);
329: my $logo=&Apache::loncommon::designparm('login.logo',$domain);
330: my $img=&Apache::loncommon::designparm('login.img',$domain);
331: my $domainlogo=&Apache::loncommon::domainlogo($domain);
332: my $showbanner = 1;
333: my $showmainlogo = 1;
334: if (defined(&Apache::loncommon::designparm('login.showlogo_img',$domain))) {
335: $showbanner = &Apache::loncommon::designparm('login.showlogo_img',$domain);
336: }
337: if (defined(&Apache::loncommon::designparm('login.showlogo_logo',$domain))) {
338: $showmainlogo = &Apache::loncommon::designparm('login.showlogo_logo',$domain);
339: }
340: my $showadminmail;
341: my @possdoms = &Apache::lonnet::current_machine_domains();
342: if (grep(/^\Q$domain\E$/,@possdoms)) {
343: $showadminmail=&Apache::loncommon::designparm('login.adminmail',$domain);
344: }
345: my $showcoursecat =
346: &Apache::loncommon::designparm('login.coursecatalog',$domain);
347: my $shownewuserlink =
348: &Apache::loncommon::designparm('login.newuser',$domain);
349: my $showhelpdesk =
350: &Apache::loncommon::designparm('login.helpdesk',$domain);
351: my $now=time;
352: my $js = (<<ENDSCRIPT);
353:
354: <script type="text/javascript" language="JavaScript">
355: // <![CDATA[
356: function send()
357: {
358: this.document.server.elements.uname.value
359: =this.document.client.elements.uname.value;
360:
361: this.document.server.elements.udom.value
362: =this.document.client.elements.udom.value;
363:
364: uextkey=this.document.client.elements.uextkey.value;
365: lextkey=this.document.client.elements.lextkey.value;
366: initkeys();
367:
368: if(this.document.server.action.substr(0,5) === 'http:'){
369: this.document.server.elements.upass0.value
370: =getCrypted(this.document.client.elements.upass$now.value);
371: } else {
372: this.document.server.elements.upass0.value
373: =this.document.client.elements.upass$now.value;
374: }
375:
376: this.document.client.elements.uname.value='';
377: this.document.client.elements.upass$now.value='';
378:
379: this.document.server.submit();
380: return false;
381: }
382:
383: function enableInput() {
384: this.document.client.elements.upass$now.removeAttribute("readOnly");
385: this.document.client.elements.uname.removeAttribute("readOnly");
386: this.document.client.elements.udom.removeAttribute("readOnly");
387: return;
388: }
389:
390: // ]]>
391: </script>
392:
393: ENDSCRIPT
394:
395: # --------------------------------------------------- Print login screen header
396:
397: my %add_entries = (
398: bgcolor => "$mainbg",
399: text => "$font",
400: link => "$link",
401: vlink => "$vlink",
402: alink => "$alink",
403: onload => 'javascript:enableInput();',);
404:
405: my ($lonhost_in_use,$headextra,$headextra_exempt,@hosts,%defaultdomconf);
406: @hosts = &Apache::lonnet::current_machine_ids();
407: $lonhost_in_use = $lonhost;
408: if (@hosts > 1) {
409: foreach my $hostid (@hosts) {
410: if (&Apache::lonnet::host_domain($hostid) eq $defdom) {
411: $lonhost_in_use = $hostid;
412: last;
413: }
414: }
415: }
416: %defaultdomconf = &Apache::loncommon::get_domainconf($defdom);
417: $headextra = $defaultdomconf{$defdom.'.login.headtag_'.$lonhost_in_use};
418: $headextra_exempt = $defaultdomconf{$domain.'.login.headtag_exempt_'.$lonhost_in_use};
419: if ($headextra) {
420: my $omitextra;
421: if ($headextra_exempt ne '') {
422: my @exempt = split(',',$headextra_exempt);
423: my $ip = $ENV{'REMOTE_ADDR'};
424: if (grep(/^\Q$ip\E$/,@exempt)) {
425: $omitextra = 1;
426: }
427: }
428: unless ($omitextra) {
429: my $confname = $defdom.'-domainconfig';
430: if ($headextra =~ m{^\Q/res/$defdom/$confname/login/headtag/$lonhost_in_use/\E}) {
431: my $extra = &Apache::lonnet::getfile(&Apache::lonnet::filelocation("",$headextra));
432: unless ($extra eq '-1') {
433: $js .= "\n".$extra."\n";
434: }
435: }
436: }
437: }
438:
439: $r->print(&Apache::loncommon::start_page('The LearningOnline Network with CAPA Login',$js,
440: { 'redirect' => [$expire,'/adm/roles'],
441: 'add_entries' => \%add_entries,
442: 'only_body' => 1,}));
443:
444: # ----------------------------------------------------------------------- Texts
445:
446: my %lt=&Apache::lonlocal::texthash(
447: 'un' => 'Username',
448: 'pw' => 'Password',
449: 'dom' => 'Domain',
450: 'perc' => 'percent',
451: 'load' => 'Server Load',
452: 'userload' => 'User Load',
453: 'catalog' => 'Course/Community Catalog',
454: 'log' => 'Log in',
455: 'help' => 'Log-in Help',
456: 'serv' => 'Server',
457: 'servadm' => 'Server Administration',
458: 'helpdesk' => 'Contact Helpdesk',
459: 'forgotpw' => 'Forgot password?',
460: 'newuser' => 'New User?',
461: );
462: # -------------------------------------------------- Change password field name
463:
464: my $forgotpw = &forgotpwdisplay(%lt);
465: $forgotpw .= '<br />' if $forgotpw;
466: my $loginhelp = &Apache::lonauth::loginhelpdisplay($authdomain);
467: if ($loginhelp) {
468: $loginhelp = '<a href="'.$loginhelp.'">'.$lt{'help'}.'</a><br />';
469: }
470:
471: # ---------------------------------------------------- Serve out DES JavaScript
472: {
473: my $jsh=Apache::File->new($include."/londes.js");
474: $r->print(<$jsh>);
475: }
476: # ---------------------------------------------------------- Serve rest of page
477:
478: $r->print(
479: '<div class="LC_Box"'
480: .' style="margin:0 auto; padding:10px; width:90%; height: auto; background-color:#FFFFFF;">'
481: );
482:
483: $r->print(<<ENDSERVERFORM);
484: <form name="server" action="/adm/authenticate" method="post" target="_top">
485: <input type="hidden" name="logtoken" value="$logtoken" />
486: <input type="hidden" name="serverid" value="$lonhost" />
487: <input type="hidden" name="uname" value="" />
488: <input type="hidden" name="upass0" value="" />
489: <input type="hidden" name="udom" value="" />
490: <input type="hidden" name="localpath" value="$env{'form.localpath'}" />
491: <input type="hidden" name="localres" value="$env{'form.localres'}" />
492: </form>
493: ENDSERVERFORM
494: my $coursecatalog;
495: if (($showcoursecat eq '') || ($showcoursecat)) {
496: $coursecatalog = &coursecatalog_link($lt{'catalog'}).'<br />';
497: }
498: my $newuserlink;
499: if ($shownewuserlink) {
500: $newuserlink = &newuser_link($lt{'newuser'}).'<br />';
501: }
502: my $logintitle =
503: '<h2 class="LC_hcell"'
504: .' style="background:'.$loginbox_header_bgcol.';'
505: .' color:'.$loginbox_header_textcol.'">'
506: .$lt{'log'}
507: .'</h2>';
508:
509: my $noscript_warning='<noscript><span class="LC_warning"><b>'
510: .&mt('Use of LON-CAPA requires Javascript to be enabled in your web browser.')
511: .'</b></span></noscript>';
512: my $helpdeskscript;
513: my $contactblock = &contactdisplay(\%lt,$servadm,$showadminmail,
514: $authdomain,\$helpdeskscript,
515: $showhelpdesk,\@possdoms);
516:
517: my $mobileargs;
518: if ($clientmobile) {
519: $mobileargs = 'autocapitalize="off" autocorrect="off"';
520: }
521: my $loginform=(<<LFORM);
522: <form name="client" action="" onsubmit="return(send())">
523: <input type="hidden" name="lextkey" value="$lextkey" />
524: <input type="hidden" name="uextkey" value="$uextkey" />
525: <b><label for="uname">$lt{'un'}</label>:</b><br />
526: <input type="text" name="uname" id="uname" size="15" value="$authusername" readonly="readonly" $mobileargs /><br />
527: <b><label for="upass$now">$lt{'pw'}</label>:</b><br />
528: <input type="password" name="upass$now" id="upass$now" size="15" readonly="readonly" /><br />
529: <b><label for="udom">$lt{'dom'}</label>:</b><br />
530: <input type="text" name="udom" id="udom" size="15" value="$authdomain" readonly="readonly" $mobileargs /><br />
531: <input type="submit" value="$lt{'log'}" />
532: </form>
533: LFORM
534:
535: if ($showbanner) {
536: $r->print(<<HEADER);
537: <!-- The LON-CAPA Header -->
538: <div style="background:$pgbg;margin:0;width:100%;">
539: <img src="$img" border="0" alt="The Learning Online Network with CAPA" class="LC_maxwidth" />
540: </div>
541: HEADER
542: }
543: $r->print(<<ENDTOP);
544: <div style="float:left;margin-top:0;">
545: <div class="LC_Box" style="background:$loginbox_bg;">
546: $logintitle
547: $loginform
548: $noscript_warning
549: </div>
550:
551: <div class="LC_Box" style="padding-top: 10px;">
552: $loginhelp
553: $forgotpw
554: $contactblock
555: $newuserlink
556: $coursecatalog
557: </div>
558: </div>
559:
560: <div>
561: ENDTOP
562: if ($showmainlogo) {
563: $r->print(' <img src="'.$logo.'" alt="" class="LC_maxwidth" />'."\n");
564: }
565: $r->print(<<ENDTOP);
566: $announcements
567: </div>
568: <hr style="clear:both;" />
569: ENDTOP
570: my ($domainrow,$serverrow,$loadrow,$userloadrow,$versionrow);
571: $domainrow = <<"END";
572: <tr>
573: <td align="left" valign="top">
574: <small><b>$lt{'dom'}: </b></small>
575: </td>
576: <td align="left" valign="top">
577: <small><tt> $domain</tt></small>
578: </td>
579: </tr>
580: END
581: $serverrow = <<"END";
582: <tr>
583: <td align="left" valign="top">
584: <small><b>$lt{'serv'}: </b></small>
585: </td>
586: <td align="left" valign="top">
587: <small><tt> $lonhost ($role)</tt></small>
588: </td>
589: </tr>
590: END
591: if ($loadlim) {
592: $loadrow = <<"END";
593: <tr>
594: <td align="left" valign="top">
595: <small><b>$lt{'load'}: </b></small>
596: </td>
597: <td align="left" valign="top">
598: <small><tt> $loadpercent $lt{'perc'}</tt></small>
599: </td>
600: </tr>
601: END
602: }
603: if ($uloadlim) {
604: $userloadrow = <<"END";
605: <tr>
606: <td align="left" valign="top">
607: <small><b>$lt{'userload'}: </b></small>
608: </td>
609: <td align="left" valign="top">
610: <small><tt> $userloadpercent $lt{'perc'}</tt></small>
611: </td>
612: </tr>
613: END
614: }
615: if (($version ne '') && ($version ne '<!-- VERSION -->')) {
616: $versionrow = <<"END";
617: <tr>
618: <td colspan="2" align="left">
619: <small>$version</small>
620: </td>
621: </tr>
622: END
623: }
624:
625: $r->print(<<ENDDOCUMENT);
626: <div style="float: left;">
627: <table border="0" cellspacing="0" cellpadding="0">
628: $domainrow
629: $serverrow
630: $loadrow
631: $userloadrow
632: $versionrow
633: </table>
634: </div>
635: <div style="float: right;">
636: $domainlogo
637: </div>
638: <br style="clear:both;" />
639: </div>
640:
641: <script type="text/javascript">
642: // <![CDATA[
643: // the if prevents the script error if the browser can not handle this
644: if ( document.client.uname ) { document.client.uname.focus(); }
645: // ]]>
646: </script>
647: $helpdeskscript
648:
649: ENDDOCUMENT
650: my %endargs = ( 'noredirectlink' => 1, );
651: $r->print(&Apache::loncommon::end_page(\%endargs));
652: return OK;
653: }
654:
655: sub check_loginvia {
656: my ($domain,$lonhost) = @_;
657: if ($domain eq '' || $lonhost eq '') {
658: return;
659: }
660: my %domconfhash = &Apache::loncommon::get_domainconf($domain);
661: my $loginvia = $domconfhash{$domain.'.login.loginvia_'.$lonhost};
662: my $loginvia_exempt = $domconfhash{$domain.'.login.loginvia_exempt_'.$lonhost};
663: my $output;
664: if ($loginvia ne '') {
665: my $noredirect;
666: my $ip = $ENV{'REMOTE_ADDR'};
667: if ($ip eq '127.0.0.1') {
668: $noredirect = 1;
669: } else {
670: if ($loginvia_exempt ne '') {
671: my @exempt = split(',',$loginvia_exempt);
672: if (grep(/^\Q$ip\E$/,@exempt)) {
673: $noredirect = 1;
674: }
675: }
676: }
677: unless ($noredirect) {
678: my ($newhost,$path);
679: if ($loginvia =~ /:/) {
680: ($newhost,$path) = split(':',$loginvia);
681: } else {
682: $newhost = $loginvia;
683: }
684: if ($newhost ne $lonhost) {
685: if (&Apache::lonnet::hostname($newhost) ne '') {
686: $output = &redirect_page($newhost,$path);
687: }
688: }
689: }
690: }
691: return $output;
692: }
693:
694: sub redirect_page {
695: my ($desthost,$path) = @_;
696: my $protocol = $Apache::lonnet::protocol{$desthost};
697: $protocol = 'http' if ($protocol ne 'https');
698: unless ($path =~ m{^/}) {
699: $path = '/'.$path;
700: }
701: my $url = $protocol.'://'.&Apache::lonnet::hostname($desthost).$path;
702: if ($env{'form.firsturl'} ne '') {
703: $url .='?firsturl='.$env{'form.firsturl'};
704: }
705: my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef,
706: {'redirect' => [0,$url],});
707: my $end_page = &Apache::loncommon::end_page();
708: return $start_page.$end_page;
709: }
710:
711: sub contactdisplay {
712: my ($lt,$servadm,$showadminmail,$authdomain,$helpdeskscript,$showhelpdesk,
713: $possdoms) = @_;
714: my $contactblock;
715: my $origmail;
716: if (ref($possdoms) eq 'ARRAY') {
717: if (grep(/^\Q$authdomain\E$/,@{$possdoms})) {
718: $origmail = $Apache::lonnet::perlvar{'lonSupportEMail'};
719: }
720: }
721: my $requestmail =
722: &Apache::loncommon::build_recipient_list(undef,'helpdeskmail',
723: $authdomain,$origmail);
724: unless ($showhelpdesk eq '0') {
725: if ($requestmail =~ m/[^\@]+\@[^\@]+/) {
726: $showhelpdesk = 1;
727: } else {
728: $showhelpdesk = 0;
729: }
730: }
731: if ($servadm && $showadminmail) {
732: $contactblock .= $$lt{'servadm'}.':<br />'.
733: '<tt>'.$servadm.'</tt><br />';
734: }
735: if ($showhelpdesk) {
736: $contactblock .= '<a href="javascript:helpdesk()">'.$lt->{'helpdesk'}.'</a><br />';
737: my $thisurl = &escape('/adm/login');
738: $$helpdeskscript = <<"ENDSCRIPT";
739: <script type="text/javascript">
740: // <![CDATA[
741: function helpdesk() {
742: var possdom = document.client.udom.value;
743: var codedom = possdom.replace( new RegExp("[^A-Za-z0-9.\\-]","g"),'');
744: if (codedom == '') {
745: codedom = "$authdomain";
746: }
747: var querystr = "origurl=$thisurl&codedom="+codedom;
748: document.location.href = "/adm/helpdesk?"+querystr;
749: return;
750: }
751: // ]]>
752: </script>
753: ENDSCRIPT
754: }
755: return $contactblock;
756: }
757:
758: sub forgotpwdisplay {
759: my (%lt) = @_;
760: my $prompt_for_resetpw = 1;
761: if ($prompt_for_resetpw) {
762: return '<a href="/adm/resetpw">'.$lt{'forgotpw'}.'</a>';
763: }
764: return;
765: }
766:
767: sub coursecatalog_link {
768: my ($linkname) = @_;
769: return <<"END";
770: <a href="/adm/coursecatalog">$linkname</a>
771: END
772: }
773:
774: sub newuser_link {
775: my ($linkname) = @_;
776: return '<a href="/adm/createaccount">'.$linkname.'</a>';
777: }
778:
779: 1;
780: __END__
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