1: # The LearningOnline Network
2: # Login Screen
3: #
4: # $Id: lonlogin.pm,v 1.164 2015/06/06 14:39:42 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($env{'form.iptoken'});
116: unless ($sessiondata{'sessionserver'}) {
117: my $delete = &Apache::lonnet::tmpdel($env{'form.iptoken'});
118: delete($env{'form.iptoken'});
119: }
120: }
121: # ----------------------------------------------------------- Process Interface
122: $env{'form.interface'}=~s/\W//g;
123:
124: (undef,undef,undef,undef,undef,undef,my $clientmobile) =
125: &Apache::loncommon::decode_user_agent();
126:
127: my $iconpath=
128: &Apache::loncommon::lonhttpdurl($r->dir_config('lonIconsURL'));
129:
130: my $lonhost = $r->dir_config('lonHostID');
131: my $domain = &Apache::lonnet::default_login_domain();
132: my $defdom = $domain;
133: if ($lonhost ne '') {
134: unless ($sessiondata{'sessionserver'}) {
135: my $redirect = &check_loginvia($domain,$lonhost);
136: if ($redirect) {
137: $r->print($redirect);
138: return OK;
139: }
140: }
141: }
142:
143: if (($sessiondata{'domain'}) &&
144: (&Apache::lonnet::domain($env{'form.domain'},'description'))) {
145: $domain=$sessiondata{'domain'};
146: } elsif (($env{'form.domain'}) &&
147: (&Apache::lonnet::domain($env{'form.domain'},'description'))) {
148: $domain=$env{'form.domain'};
149: }
150:
151: my $role = $r->dir_config('lonRole');
152: my $loadlim = $r->dir_config('lonLoadLim');
153: my $uloadlim= $r->dir_config('lonUserLoadLim');
154: my $servadm = $r->dir_config('lonAdmEMail');
155: my $tabdir = $r->dir_config('lonTabDir');
156: my $include = $r->dir_config('lonIncludes');
157: my $expire = $r->dir_config('lonExpire');
158: my $version = $r->dir_config('lonVersion');
159: my $host_name = &Apache::lonnet::hostname($lonhost);
160:
161: # --------------------------------------------- Default values for login fields
162:
163: my ($authusername,$authdomain);
164: if ($sessiondata{'username'}) {
165: $authusername=$sessiondata{'username'};
166: } else {
167: $env{'form.username'} = &Apache::loncommon::cleanup_html($env{'form.username'});
168: $authusername=($env{'form.username'}?$env{'form.username'}:'');
169: }
170: if ($sessiondata{'domain'}) {
171: $authdomain=$sessiondata{'domain'};
172: } else {
173: $env{'form.domain'} = &Apache::loncommon::cleanup_html($env{'form.domain'});
174: $authdomain=($env{'form.domain'}?$env{'form.domain'}:$domain);
175: }
176:
177: # ---------------------------------------------------------- Determine own load
178: my $loadavg;
179: {
180: my $loadfile=Apache::File->new('/proc/loadavg');
181: $loadavg=<$loadfile>;
182: }
183: $loadavg =~ s/\s.*//g;
184:
185: my ($loadpercent,$userloadpercent);
186: if ($loadlim) {
187: $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim);
188: }
189: if ($uloadlim) {
190: $userloadpercent=&Apache::lonnet::userload();
191: }
192:
193: my $firsturl=
194: ($env{'request.firsturl'}?$env{'request.firsturl'}:$env{'form.firsturl'});
195:
196: # ----------------------------------------------------------- Get announcements
197: my $announcements=&Apache::lonnet::getannounce();
198: # -------------------------------------------------------- Set login parameters
199:
200: my @hexstr=('0','1','2','3','4','5','6','7',
201: '8','9','a','b','c','d','e','f');
202: my $lkey='';
203: for (0..7) {
204: $lkey.=$hexstr[rand(15)];
205: }
206:
207: my $ukey='';
208: for (0..7) {
209: $ukey.=$hexstr[rand(15)];
210: }
211:
212: my $lextkey=hex($lkey);
213: if ($lextkey>2147483647) { $lextkey-=4294967296; }
214:
215: my $uextkey=hex($ukey);
216: if ($uextkey>2147483647) { $uextkey-=4294967296; }
217:
218: # -------------------------------------------------------- Store away log token
219: my $tokenextras;
220: if ($env{'form.role'}) {
221: $tokenextras = '&role='.&escape($env{'form.role'});
222: }
223: if ($env{'form.symb'}) {
224: if (!$tokenextras) {
225: $tokenextras = '&';
226: }
227: $tokenextras .= '&symb='.&escape($env{'form.symb'});
228: }
229: if ($env{'form.iptoken'}) {
230: if (!$tokenextras) {
231: $tokenextras = '&&';
232: }
233: $tokenextras .= '&iptoken='.&escape($env{'form.iptoken'});
234: }
235: my $logtoken=Apache::lonnet::reply(
236: 'tmpput:'.$ukey.$lkey.'&'.$firsturl.$tokenextras,
237: $lonhost);
238:
239: # -- If we cannot talk to ourselves, or hostID does not map to a hostname
240: # we are in serious trouble
241:
242: if (($logtoken eq 'con_lost') || ($logtoken eq 'no_such_host')) {
243: if ($logtoken eq 'no_such_host') {
244: &Apache::lonnet::logthis('No valid logtoken for log-in page -- unable to determine hostname for hostID: '.$lonhost.'. Check entry in hosts.tab');
245: }
246: my $spares='';
247: my $last;
248: foreach my $hostid (sort
249: {
250: &Apache::lonnet::hostname($a) cmp
251: &Apache::lonnet::hostname($b);
252: }
253: keys(%Apache::lonnet::spareid)) {
254: next if ($hostid eq $lonhost);
255: my $hostname = &Apache::lonnet::hostname($hostid);
256: next if (($last eq $hostname) || ($hostname eq ''));
257: $spares.='<br /><font size="+1"><a href="http://'.
258: $hostname.
259: '/adm/login?domain='.$authdomain.'">'.
260: $hostname.'</a>'.
261: ' '.&mt('(preferred)').'</font>'.$/;
262: $last=$hostname;
263: }
264: if ($spares) {
265: $spares.= '<br />';
266: }
267: my %all_hostnames = &Apache::lonnet::all_hostnames();
268: foreach my $hostid (sort
269: {
270: &Apache::lonnet::hostname($a) cmp
271: &Apache::lonnet::hostname($b);
272: }
273: keys(%all_hostnames)) {
274: next if ($hostid eq $lonhost || $Apache::lonnet::spareid{$hostid});
275: my $hostname = &Apache::lonnet::hostname($hostid);
276: next if (($last eq $hostname) || ($hostname eq ''));
277: $spares.='<br /><a href="http://'.
278: $hostname.
279: '/adm/login?domain='.$authdomain.'">'.
280: $hostname.'</a>';
281: $last=$hostname;
282: }
283: $r->print(
284: '<html>'
285: .'<head><title>'
286: .&mt('The LearningOnline Network with CAPA')
287: .'</title></head>'
288: .'<body bgcolor="#FFFFFF">'
289: .'<h1>'.&mt('The LearningOnline Network with CAPA').'</h1>'
290: .'<img src="/adm/lonKaputt/lonlogo_broken.gif" align="right" />'
291: .'<h3>'.&mt('This LON-CAPA server is temporarily not available for login.').'</h3>');
292: if ($spares) {
293: $r->print('<p>'.&mt('Please attempt to login to one of the following servers:')
294: .'</p>'
295: .$spares);
296: }
297: $r->print('</body>'
298: .'</html>'
299: );
300: return OK;
301: }
302:
303: # ----------------------------------------------- Apparently we are in business
304: $servadm=~s/\,/\<br \/\>/g;
305:
306: # ----------------------------------------------------------- Front page design
307: my $pgbg=&Apache::loncommon::designparm('login.pgbg',$domain);
308: my $font=&Apache::loncommon::designparm('login.font',$domain);
309: my $link=&Apache::loncommon::designparm('login.link',$domain);
310: my $vlink=&Apache::loncommon::designparm('login.vlink',$domain);
311: my $alink=&Apache::loncommon::designparm('login.alink',$domain);
312: my $mainbg=&Apache::loncommon::designparm('login.mainbg',$domain);
313: my $loginbox_bg=&Apache::loncommon::designparm('login.sidebg',$domain);
314: my $loginbox_header_bgcol=&Apache::loncommon::designparm('login.bgcol',$domain);
315: my $loginbox_header_textcol=&Apache::loncommon::designparm('login.textcol',$domain);
316: my $logo=&Apache::loncommon::designparm('login.logo',$domain);
317: my $img=&Apache::loncommon::designparm('login.img',$domain);
318: my $domainlogo=&Apache::loncommon::domainlogo($domain);
319: my $showbanner = 1;
320: my $showmainlogo = 1;
321: if (defined(&Apache::loncommon::designparm('login.showlogo_img',$domain))) {
322: $showbanner = &Apache::loncommon::designparm('login.showlogo_img',$domain);
323: }
324: if (defined(&Apache::loncommon::designparm('login.showlogo_logo',$domain))) {
325: $showmainlogo = &Apache::loncommon::designparm('login.showlogo_logo',$domain);
326: }
327: my $showadminmail;
328: my @possdoms = &Apache::lonnet::current_machine_domains();
329: if (grep(/^\Q$domain\E$/,@possdoms)) {
330: $showadminmail=&Apache::loncommon::designparm('login.adminmail',$domain);
331: }
332: my $showcoursecat =
333: &Apache::loncommon::designparm('login.coursecatalog',$domain);
334: my $shownewuserlink =
335: &Apache::loncommon::designparm('login.newuser',$domain);
336: my $showhelpdesk =
337: &Apache::loncommon::designparm('login.helpdesk',$domain);
338: my $now=time;
339: my $js = (<<ENDSCRIPT);
340:
341: <script type="text/javascript" language="JavaScript">
342: // <![CDATA[
343: function send()
344: {
345: this.document.server.elements.uname.value
346: =this.document.client.elements.uname.value;
347:
348: this.document.server.elements.udom.value
349: =this.document.client.elements.udom.value;
350:
351: uextkey=this.document.client.elements.uextkey.value;
352: lextkey=this.document.client.elements.lextkey.value;
353: initkeys();
354:
355: this.document.server.elements.upass0.value
356: =this.document.client.elements.upass$now.value.substr(0,15);
357: this.document.server.elements.upass1.value
358: =this.document.client.elements.upass$now.value.substr(15,15);
359: this.document.server.elements.upass2.value
360: =this.document.client.elements.upass$now.value.substr(30,15);
361:
362: if(this.document.server.action.substr(0,5) === 'http:'){
363: for (var idx in [1,2,3]){
364: this.document.server.elements['upass' + idx].value =
365: crypted(this.document.server.elements['upass' + idx].value);
366: }
367: }
368:
369: this.document.client.elements.uname.value='';
370: this.document.client.elements.upass$now.value='';
371:
372: this.document.server.submit();
373: return false;
374: }
375:
376: function enableInput() {
377: this.document.client.elements.upass$now.removeAttribute("readOnly");
378: this.document.client.elements.uname.removeAttribute("readOnly");
379: this.document.client.elements.udom.removeAttribute("readOnly");
380: return;
381: }
382:
383: // ]]>
384: </script>
385:
386: ENDSCRIPT
387:
388: # --------------------------------------------------- Print login screen header
389:
390: my %add_entries = (
391: bgcolor => "$mainbg",
392: text => "$font",
393: link => "$link",
394: vlink => "$vlink",
395: alink => "$alink",
396: onload => 'javascript:enableInput();',);
397:
398: my ($lonhost_in_use,$headextra,$headextra_exempt,@hosts,%defaultdomconf);
399: @hosts = &Apache::lonnet::current_machine_ids();
400: $lonhost_in_use = $lonhost;
401: if (@hosts > 1) {
402: foreach my $hostid (@hosts) {
403: if (&Apache::lonnet::host_domain($hostid) eq $defdom) {
404: $lonhost_in_use = $hostid;
405: last;
406: }
407: }
408: }
409: %defaultdomconf = &Apache::loncommon::get_domainconf($defdom);
410: $headextra = $defaultdomconf{$defdom.'.login.headtag_'.$lonhost_in_use};
411: $headextra_exempt = $defaultdomconf{$domain.'.login.headtag_exempt_'.$lonhost_in_use};
412: if ($headextra) {
413: my $omitextra;
414: if ($headextra_exempt ne '') {
415: my @exempt = split(',',$headextra_exempt);
416: my $ip = $ENV{'REMOTE_ADDR'};
417: if (grep(/^\Q$ip\E$/,@exempt)) {
418: $omitextra = 1;
419: }
420: }
421: unless ($omitextra) {
422: my $confname = $defdom.'-domainconfig';
423: if ($headextra =~ m{^\Q/res/$defdom/$confname/login/headtag/$lonhost_in_use/\E}) {
424: my $extra = &Apache::lonnet::getfile(&Apache::lonnet::filelocation("",$headextra));
425: unless ($extra eq '-1') {
426: $js .= "\n".$extra."\n";
427: }
428: }
429: }
430: }
431:
432: $r->print(&Apache::loncommon::start_page('The LearningOnline Network with CAPA Login',$js,
433: { 'redirect' => [$expire,'/adm/roles'],
434: 'add_entries' => \%add_entries,
435: 'only_body' => 1,}));
436:
437: # ----------------------------------------------------------------------- Texts
438:
439: my %lt=&Apache::lonlocal::texthash(
440: 'un' => 'Username',
441: 'pw' => 'Password',
442: 'dom' => 'Domain',
443: 'perc' => 'percent',
444: 'load' => 'Server Load',
445: 'userload' => 'User Load',
446: 'catalog' => 'Course/Community Catalog',
447: 'log' => 'Log in',
448: 'help' => 'Log-in Help',
449: 'serv' => 'Server',
450: 'servadm' => 'Server Administration',
451: 'helpdesk' => 'Contact Helpdesk',
452: 'forgotpw' => 'Forgot password?',
453: 'newuser' => 'New User?',
454: );
455: # -------------------------------------------------- Change password field name
456:
457: my $forgotpw = &forgotpwdisplay(%lt);
458: $forgotpw .= '<br />' if $forgotpw;
459: my $loginhelp = &Apache::lonauth::loginhelpdisplay($authdomain);
460: if ($loginhelp) {
461: $loginhelp = '<a href="'.$loginhelp.'">'.$lt{'help'}.'</a><br />';
462: }
463:
464: # ---------------------------------------------------- Serve out DES JavaScript
465: {
466: my $jsh=Apache::File->new($include."/londes.js");
467: $r->print(<$jsh>);
468: }
469: # ---------------------------------------------------------- Serve rest of page
470:
471: $r->print(
472: '<div class="LC_Box"'
473: .' style="margin:0 auto; padding:10px; width:90%; height: auto; background-color:#FFFFFF;">'
474: );
475:
476: $r->print(<<ENDSERVERFORM);
477: <form name="server" action="/adm/authenticate" method="post" target="_top">
478: <input type="hidden" name="logtoken" value="$logtoken" />
479: <input type="hidden" name="serverid" value="$lonhost" />
480: <input type="hidden" name="uname" value="" />
481: <input type="hidden" name="upass0" value="" />
482: <input type="hidden" name="upass1" value="" />
483: <input type="hidden" name="upass2" value="" />
484: <input type="hidden" name="udom" value="" />
485: <input type="hidden" name="localpath" value="$env{'form.localpath'}" />
486: <input type="hidden" name="localres" value="$env{'form.localres'}" />
487: </form>
488: ENDSERVERFORM
489: my $coursecatalog;
490: if (($showcoursecat eq '') || ($showcoursecat)) {
491: $coursecatalog = &coursecatalog_link($lt{'catalog'}).'<br />';
492: }
493: my $newuserlink;
494: if ($shownewuserlink) {
495: $newuserlink = &newuser_link($lt{'newuser'}).'<br />';
496: }
497: my $logintitle =
498: '<h2 class="LC_hcell"'
499: .' style="background:'.$loginbox_header_bgcol.';'
500: .' color:'.$loginbox_header_textcol.'">'
501: .$lt{'log'}
502: .'</h2>';
503:
504: my $noscript_warning='<noscript><span class="LC_warning"><b>'
505: .&mt('Use of LON-CAPA requires Javascript to be enabled in your web browser.')
506: .'</b></span></noscript>';
507: my $helpdeskscript;
508: my $contactblock = &contactdisplay(\%lt,$servadm,$showadminmail,
509: $authdomain,\$helpdeskscript,
510: $showhelpdesk,\@possdoms);
511:
512: my $mobileargs;
513: if ($clientmobile) {
514: $mobileargs = 'autocapitalize="off" autocorrect="off"';
515: }
516: my $loginform=(<<LFORM);
517: <form name="client" action="" onsubmit="return(send())">
518: <input type="hidden" name="lextkey" value="$lextkey" />
519: <input type="hidden" name="uextkey" value="$uextkey" />
520: <b><label for="uname">$lt{'un'}</label>:</b><br />
521: <input type="text" name="uname" id="uname" size="15" value="$authusername" readonly="readonly" $mobileargs /><br />
522: <b><label for="upass$now">$lt{'pw'}</label>:</b><br />
523: <input type="password" name="upass$now" id="upass$now" size="15" readonly="readonly" /><br />
524: <b><label for="udom">$lt{'dom'}</label>:</b><br />
525: <input type="text" name="udom" id="udom" size="15" value="$authdomain" readonly="readonly" $mobileargs /><br />
526: <input type="submit" value="$lt{'log'}" />
527: </form>
528: LFORM
529:
530: if ($showbanner) {
531: $r->print(<<HEADER);
532: <!-- The LON-CAPA Header -->
533: <div style="background:$pgbg;margin:0;width:100%;">
534: <img src="$img" border="0" alt="The Learning Online Network with CAPA" />
535: </div>
536: HEADER
537: }
538: $r->print(<<ENDTOP);
539: <div style="float:left;margin-top:0;">
540: <div class="LC_Box" style="background:$loginbox_bg;">
541: $logintitle
542: $loginform
543: $noscript_warning
544: </div>
545:
546: <div class="LC_Box" style="padding-top: 10px;">
547: $loginhelp
548: $forgotpw
549: $contactblock
550: $newuserlink
551: $coursecatalog
552: </div>
553: </div>
554:
555: <div>
556: ENDTOP
557: if ($showmainlogo) {
558: $r->print(' <img src="'.$logo.'" alt="" />'."\n");
559: }
560: $r->print(<<ENDTOP);
561: $announcements
562: </div>
563: <hr style="clear:both;" />
564: ENDTOP
565: my ($domainrow,$serverrow,$loadrow,$userloadrow,$versionrow);
566: $domainrow = <<"END";
567: <tr>
568: <td align="left" valign="top">
569: <small><b>$lt{'dom'}: </b></small>
570: </td>
571: <td align="left" valign="top">
572: <small><tt> $domain</tt></small>
573: </td>
574: </tr>
575: END
576: $serverrow = <<"END";
577: <tr>
578: <td align="left" valign="top">
579: <small><b>$lt{'serv'}: </b></small>
580: </td>
581: <td align="left" valign="top">
582: <small><tt> $lonhost ($role)</tt></small>
583: </td>
584: </tr>
585: END
586: if ($loadlim) {
587: $loadrow = <<"END";
588: <tr>
589: <td align="left" valign="top">
590: <small><b>$lt{'load'}: </b></small>
591: </td>
592: <td align="left" valign="top">
593: <small><tt> $loadpercent $lt{'perc'}</tt></small>
594: </td>
595: </tr>
596: END
597: }
598: if ($uloadlim) {
599: $userloadrow = <<"END";
600: <tr>
601: <td align="left" valign="top">
602: <small><b>$lt{'userload'}: </b></small>
603: </td>
604: <td align="left" valign="top">
605: <small><tt> $userloadpercent $lt{'perc'}</tt></small>
606: </td>
607: </tr>
608: END
609: }
610: if (($version ne '') && ($version ne '<!-- VERSION -->')) {
611: $versionrow = <<"END";
612: <tr>
613: <td colspan="2" align="left">
614: <small>$version</small>
615: </td>
616: </tr>
617: END
618: }
619:
620: $r->print(<<ENDDOCUMENT);
621: <div style="float: left;">
622: <table border="0" cellspacing="0" cellpadding="0">
623: $domainrow
624: $serverrow
625: $loadrow
626: $userloadrow
627: $versionrow
628: </table>
629: </div>
630: <div style="float: right;">
631: $domainlogo
632: </div>
633: <br style="clear:both;" />
634: </div>
635:
636: <script type="text/javascript">
637: // <![CDATA[
638: // the if prevents the script error if the browser can not handle this
639: if ( document.client.uname ) { document.client.uname.focus(); }
640: // ]]>
641: </script>
642: $helpdeskscript
643:
644: ENDDOCUMENT
645: my %endargs = ( 'noredirectlink' => 1, );
646: $r->print(&Apache::loncommon::end_page(\%endargs));
647: return OK;
648: }
649:
650: sub check_loginvia {
651: my ($domain,$lonhost) = @_;
652: if ($domain eq '' || $lonhost eq '') {
653: return;
654: }
655: my %domconfhash = &Apache::loncommon::get_domainconf($domain);
656: my $loginvia = $domconfhash{$domain.'.login.loginvia_'.$lonhost};
657: my $loginvia_exempt = $domconfhash{$domain.'.login.loginvia_exempt_'.$lonhost};
658: my $output;
659: if ($loginvia ne '') {
660: my $noredirect;
661: my $ip = $ENV{'REMOTE_ADDR'};
662: if ($ip eq '127.0.0.1') {
663: $noredirect = 1;
664: } else {
665: if ($loginvia_exempt ne '') {
666: my @exempt = split(',',$loginvia_exempt);
667: if (grep(/^\Q$ip\E$/,@exempt)) {
668: $noredirect = 1;
669: }
670: }
671: }
672: unless ($noredirect) {
673: my ($newhost,$path);
674: if ($loginvia =~ /:/) {
675: ($newhost,$path) = split(':',$loginvia);
676: } else {
677: $newhost = $loginvia;
678: }
679: if ($newhost ne $lonhost) {
680: if (&Apache::lonnet::hostname($newhost) ne '') {
681: $output = &redirect_page($newhost,$path);
682: }
683: }
684: }
685: }
686: return $output;
687: }
688:
689: sub redirect_page {
690: my ($desthost,$path) = @_;
691: my $protocol = $Apache::lonnet::protocol{$desthost};
692: $protocol = 'http' if ($protocol ne 'https');
693: unless ($path =~ m{^/}) {
694: $path = '/'.$path;
695: }
696: my $url = $protocol.'://'.&Apache::lonnet::hostname($desthost).$path;
697: if ($env{'form.firsturl'} ne '') {
698: $url .='?firsturl='.$env{'form.firsturl'};
699: }
700: my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef,
701: {'redirect' => [0,$url],});
702: my $end_page = &Apache::loncommon::end_page();
703: return $start_page.$end_page;
704: }
705:
706: sub contactdisplay {
707: my ($lt,$servadm,$showadminmail,$authdomain,$helpdeskscript,$showhelpdesk,
708: $possdoms) = @_;
709: my $contactblock;
710: my $origmail;
711: if (ref($possdoms) eq 'ARRAY') {
712: if (grep(/^\Q$authdomain\E$/,@{$possdoms})) {
713: $origmail = $Apache::lonnet::perlvar{'lonSupportEMail'};
714: }
715: }
716: my $requestmail =
717: &Apache::loncommon::build_recipient_list(undef,'helpdeskmail',
718: $authdomain,$origmail);
719: unless ($showhelpdesk eq '0') {
720: if ($requestmail =~ m/[^\@]+\@[^\@]+/) {
721: $showhelpdesk = 1;
722: } else {
723: $showhelpdesk = 0;
724: }
725: }
726: if ($servadm && $showadminmail) {
727: $contactblock .= $$lt{'servadm'}.':<br />'.
728: '<tt>'.$servadm.'</tt><br />';
729: }
730: if ($showhelpdesk) {
731: $contactblock .= '<a href="javascript:helpdesk()">'.$lt->{'helpdesk'}.'</a><br />';
732: my $thisurl = &escape('/adm/login');
733: $$helpdeskscript = <<"ENDSCRIPT";
734: <script type="text/javascript">
735: // <![CDATA[
736: function helpdesk() {
737: var possdom = document.client.udom.value;
738: var codedom = possdom.replace( new RegExp("[^A-Za-z0-9.\\-]","g"),'');
739: if (codedom == '') {
740: codedom = "$authdomain";
741: }
742: var querystr = "origurl=$thisurl&codedom="+codedom;
743: document.location.href = "/adm/helpdesk?"+querystr;
744: return;
745: }
746: // ]]>
747: </script>
748: ENDSCRIPT
749: }
750: return $contactblock;
751: }
752:
753: sub forgotpwdisplay {
754: my (%lt) = @_;
755: my $prompt_for_resetpw = 1;
756: if ($prompt_for_resetpw) {
757: return '<a href="/adm/resetpw">'.$lt{'forgotpw'}.'</a>';
758: }
759: return;
760: }
761:
762: sub coursecatalog_link {
763: my ($linkname) = @_;
764: return <<"END";
765: <a href="/adm/coursecatalog">$linkname</a>
766: END
767: }
768:
769: sub newuser_link {
770: my ($linkname) = @_;
771: return '<a href="/adm/createaccount">'.$linkname.'</a>';
772: }
773:
774: 1;
775: __END__
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