1: # The LearningOnline Network
2: # Login Screen
3: #
4: # $Id: lonlogin.pm,v 1.82 2006/11/01 21:27:50 www 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 CGI::Cookie();
34: use Apache::File ();
35: use Apache::lonnet;
36: use Apache::loncommon();
37: use Apache::lonauth();
38: use Apache::lonlocal;
39: use Apache::migrateuser();
40: use lib '/home/httpd/lib/perl/';
41: use LONCAPA;
42:
43:
44: sub additional_machine_domains {
45: my @domains;
46: open(my $fh,"<".$Apache::lonnet::perlvar{'lonTabDir'}.'/expected_domains.tab');
47: while( my $line = <$fh>) {
48: $line =~ s/\s//g;
49: push(@domains,$line);
50: }
51: return @domains;
52: }
53:
54: sub handler {
55: my $r = shift;
56:
57: &Apache::loncommon::get_unprocessed_cgi
58: (join('&',$ENV{'QUERY_STRING'},$env{'request.querystring'},
59: $ENV{'REDIRECT_QUERY_STRING'}),
60: ['interface','username','domain','firsturl','localpath','localres',
61: 'token']);
62:
63: # -- check if they are a migrating user
64: if (defined($env{'form.token'})) {
65: return &Apache::migrateuser::handler($r);
66: }
67:
68: &Apache::loncommon::no_cache($r);
69: &Apache::lonlocal::get_language_handle($r);
70: &Apache::loncommon::content_type($r,'text/html');
71: $r->send_http_header;
72: return OK if $r->header_only;
73:
74:
75: # Are we re-routing?
76: if (-e '/home/httpd/html/lon-status/reroute.txt') {
77: &Apache::lonauth::reroute($r);
78: return OK;
79: }
80:
81:
82: # -------------------------------- Prevent users from attempting to login twice
83: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
84: my $lonid=$cookies{'lonID'};
85: my $cookie;
86: if ($lonid) {
87: my $handle=$lonid->value;
88: $handle=~s/\W//g;
89: my $lonidsdir=$r->dir_config('lonIDsDir');
90: if (-e "$lonidsdir/$handle.id") {
91: # Is there an existing token file?
92: if ($handle=~/^publicuser\_/) {
93: # For "public user" - remove it, we apparently really want to login
94: unlink("$lonidsdir/$handle.id");
95: } elsif ($handle ne '') {
96: # Indeed, a valid token is found
97: my $start_page =
98: &Apache::loncommon::start_page('Already logged in');
99: my $end_page =
100: &Apache::loncommon::end_page();
101: $r->print(<<ENDFAILED);
102: $start_page
103: <h1>You are already logged in</h1>
104: <p>Please either <a href="/adm/roles">continue the current session</a> or
105: <a href="/adm/logout">logout</a>.</p>
106: <p>
107: <a href="/adm/loginproblems.html">Problems?</a></p>
108: $end_page
109: ENDFAILED
110: return OK;
111: }
112: }
113: }
114:
115: # ---------------------------------------------------- No valid token, continue
116:
117: # ---------------------------- Not possible to really login to domain "public"
118: if ($env{'form.domain'} eq 'public') {
119: $env{'form.domain'}='';
120: $env{'form.username'}='';
121: }
122: # ----------------------------------------------------------- Process Interface
123: $env{'form.interface'}=~s/\W//g;
124:
125: my $textbrowsers=$r->dir_config('lonTextBrowsers');
126: my $httpbrowser=$ENV{"HTTP_USER_AGENT"};
127:
128: foreach (split(/\:/,$textbrowsers)) {
129: if ($httpbrowser=~/$_/i) {
130: $env{'form.interface'}='textual';
131: }
132: }
133:
134: my $fullgraph=($env{'form.interface'} ne 'textual');
135: my $port_to_use=$r->dir_config('lonhttpdPort');
136: if (!defined($port_to_use)) {
137: $port_to_use='8080';
138: }
139: my $iconpath= 'http://'.$ENV{'HTTP_HOST'}.':'.$port_to_use.
140: $r->dir_config('lonIconsURL');
141: my $domain = $r->dir_config('lonDefDomain');
142: my $testdomain=(split(/\./,$ENV{'HTTP_HOST'}))[0];
143: foreach my $posdom (&Apache::lonnet::current_machine_domains(),
144: &additional_machine_domains()) {
145: if (lc($posdom) eq lc($testdomain)) { $domain=$posdom; }
146: }
147: if (($env{'form.domain'}) &&
148: ($Apache::lonnet::domaindescription{$env{'form.domain'}})) {
149: $domain=$env{'form.domain'};
150: }
151: my $role = $r->dir_config('lonRole');
152: my $loadlim = $r->dir_config('lonLoadLim');
153: my $lonhost = $r->dir_config('lonHostID');
154: my $tabdir = $r->dir_config('lonTabDir');
155: my $include = $r->dir_config('lonIncludes');
156: my $expire = $r->dir_config('lonExpire');
157: my $version = $r->dir_config('lonVersion');
158: my $host_name = $Apache::lonnet::hostname{$lonhost};
159:
160: # --------------------------------------------- Default values for login fields
161:
162: my $authusername=($env{'form.username'}?$env{'form.username'}:'');
163: my $authdomain=($env{'form.domain'}?$env{'form.domain'}:$domain);
164:
165: # ---------------------------------------------------------- Determine own load
166: my $loadavg;
167: {
168: my $loadfile=Apache::File->new('/proc/loadavg');
169: $loadavg=<$loadfile>;
170: }
171: $loadavg =~ s/\s.*//g;
172: my $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim);
173: my $userloadpercent=&Apache::lonnet::userload();
174:
175: # ------------------------------------------------------- Do the load balancing
176: my $otherserver= &Apache::lonnet::absolute_url($host_name);
177: my $firsturl=
178: ($env{'request.firsturl'}?$env{'request.firsturl'}:$env{'form.firsturl'});
179: # ---------------------------------------- Are we access server and overloaded?
180: if (($role eq 'access') &&
181: (($userloadpercent>100.0)||($loadpercent>100.0))) {
182: my $unloaded=Apache::lonnet::spareserver($loadpercent,$userloadpercent);
183: if ($unloaded) { $otherserver=$unloaded; }
184: }
185:
186: # ----------------------------------------------------------- Get announcements
187: my $announcements=&Apache::lonnet::getannounce();
188: # -------------------------------------------------------- Set login parameters
189:
190: my @hexstr=('0','1','2','3','4','5','6','7',
191: '8','9','a','b','c','d','e','f');
192: my $lkey='';
193: for (0..7) {
194: $lkey.=$hexstr[rand(15)];
195: }
196:
197: my $ukey='';
198: for (0..7) {
199: $ukey.=$hexstr[rand(15)];
200: }
201:
202: my $lextkey=hex($lkey);
203: if ($lextkey>2147483647) { $lextkey-=4294967296; }
204:
205: my $uextkey=hex($ukey);
206: if ($uextkey>2147483647) { $uextkey-=4294967296; }
207:
208: # -------------------------------------------------------- Store away log token
209: my $logtoken=Apache::lonnet::reply(
210: 'tmpput:'.$ukey.$lkey.'&'.$firsturl,
211: $lonhost);
212:
213: # ------------------- If we cannot talk to ourselves, we are in serious trouble
214:
215: if ($logtoken eq 'con_lost') {
216: my $spares='';
217: my $last;
218: foreach my $hostid (sort
219: {
220: $Apache::lonnet::hostname{$a} cmp
221: $Apache::lonnet::hostname{$b};
222: }
223: keys(%Apache::lonnet::spareid)) {
224: next if ($hostid eq $lonhost);
225: next if ($last eq $Apache::lonnet::hostname{$hostid});
226: $spares.='<br /><font size="+1"><a href="http://'.
227: $Apache::lonnet::hostname{$hostid}.
228: '/adm/login?domain='.$authdomain.'">'.
229: $Apache::lonnet::hostname{$hostid}.'</a>'.
230: ' (preferred)</font>'.$/;
231: $last=$Apache::lonnet::hostname{$hostid};
232: }
233: $spares.= '<br />';
234: foreach my $hostid (sort
235: {
236: $Apache::lonnet::hostname{$a} cmp
237: $Apache::lonnet::hostname{$b};
238: }
239: keys(%Apache::lonnet::hostname)) {
240: next if ($hostid eq $lonhost || $Apache::lonnet::spareid{$hostid});
241: next if ($last eq $Apache::lonnet::hostname{$hostid});
242: $spares.='<br /><a href="http://'.
243: $Apache::lonnet::hostname{$hostid}.
244: '/adm/login?domain='.$authdomain.'">'.
245: $Apache::lonnet::hostname{$hostid}.'</a>';
246: $last=$Apache::lonnet::hostname{$hostid};
247: }
248: $r->print(<<ENDTROUBLE);
249: <html>
250: <head><title>The LearningOnline Network with CAPA</title></head>
251: <body bgcolor="#FFFFFF">
252: <img src="/adm/lonKaputt/lonlogo_broken.gif" align="right" />
253: <h3>This LON-CAPA server is temporarily not available for login</h3>
254: <p>Please attempt to login to one of the following servers:</p>$spares
255: </body>
256: </html>
257: ENDTROUBLE
258: return OK;
259: }
260:
261: # ----------------------------------------------- Apparently we are in business
262:
263: my $domainlogo=&Apache::loncommon::domainlogo($domain);
264:
265: # --------------------------------------------------- Print login screen header
266: $r->print(<<ENDHEADER);
267: <html>
268: <head>
269: <meta HTTP-EQUIV="Refresh" CONTENT="$expire; url=/adm/roles" />
270: <title>The LearningOnline Network with CAPA Login</title>
271: </head>
272: ENDHEADER
273: # ---------------------------------------------------- Serve out DES JavaScript
274: {
275: my $jsh=Apache::File->new($include."/londes.js");
276: $r->print(<$jsh>);
277: }
278:
279: # ----------------------------------------------------------- Front page design
280: my $pgbg=
281: ($fullgraph?&Apache::loncommon::designparm('login.pgbg',$domain):'#FFFFFF');
282: my $font=
283: ($fullgraph?&Apache::loncommon::designparm('login.font',$domain):'#000000');
284: my $link=
285: ($fullgraph?&Apache::loncommon::designparm('login.link',$domain):'#0000FF');
286: my $vlink=
287: ($fullgraph?&Apache::loncommon::designparm('login.vlink',$domain):'#0000FF');
288: my $alink=&Apache::loncommon::designparm('login.alink',$domain);
289: my $mainbg=
290: ($fullgraph?&Apache::loncommon::designparm('login.mainbg',$domain):'#FFFFFF');
291: my $sidebg=
292: ($fullgraph?&Apache::loncommon::designparm('login.sidebg',$domain):'#FFFFFF');
293: my $logo=&Apache::loncommon::designparm('login.logo',$domain);
294: my $img=&Apache::loncommon::designparm('login.img',$domain);
295:
296: # ----------------------------------------------------------------------- Texts
297:
298: my %lt=&Apache::lonlocal::texthash(
299: 'un' => 'Username',
300: 'pw' => 'Password',
301: 'dom' => 'Domain',
302: 'perc' => 'percent',
303: 'load' => 'Load',
304: 'userload' => 'User Load',
305: 'about' => 'aboutlon.gif',
306: 'access' => 'accessbutton.gif',
307: 'auth' => 'userauthentication.gif',
308: 'log' => 'Log in',
309: 'help' => 'Help',
310: 'serv' => 'Server',
311: 'helpdesk' => 'Contact Helpdesk');
312: # -------------------------------------------------- Change password field name
313: my $now=time;
314: # ---------------------------------------------------------- Serve rest of page
315: $r->print(<<ENDSCRIPT);
316:
317: <body bgcolor="$pgbg" text="$font" link="$link" vlink="$vlink" alink="$alink"
318: topmargin=0 leftmargin=0 marginwidth=0 marginheight=0>
319:
320: <script language="JavaScript">
321: function send()
322: {
323: this.document.server.elements.uname.value
324: =this.document.client.elements.uname.value;
325:
326: this.document.server.elements.udom.value
327: =this.document.client.elements.udom.value;
328:
329: this.document.server.elements.imagesuppress.value
330: =this.document.client.elements.imagesuppress.checked;
331:
332: this.document.server.elements.embedsuppress.value
333: =this.document.client.elements.embedsuppress.checked;
334:
335: this.document.server.elements.appletsuppress.value
336: =this.document.client.elements.appletsuppress.checked;
337:
338: this.document.server.elements.fontenhance.value
339: =this.document.client.elements.fontenhance.checked;
340:
341: this.document.server.elements.blackwhite.value
342: =this.document.client.elements.blackwhite.checked;
343:
344: this.document.server.elements.remember.value
345: =this.document.client.elements.remember.checked;
346:
347: uextkey=this.document.client.elements.uextkey.value;
348: lextkey=this.document.client.elements.lextkey.value;
349: initkeys();
350:
351: this.document.server.elements.upass0.value
352: =crypted(this.document.client.elements.upass$now.value.substr(0,15));
353: this.document.server.elements.upass1.value
354: =crypted(this.document.client.elements.upass$now.value.substr(15,15));
355: this.document.server.elements.upass2.value
356: =crypted(this.document.client.elements.upass$now.value.substr(30,15));
357:
358: this.document.client.elements.uname.value='';
359: this.document.client.elements.upass$now.value='';
360:
361: this.document.server.submit();
362: return false;
363: }
364: </script>
365: ENDSCRIPT
366:
367: if ($fullgraph) {
368: $r->print(
369: '<table width="100%" cellpadding=0 cellspacing=0 border=0>');
370: }
371:
372: $r->print(<<ENDSERVERFORM);
373: <form name="server" action="$otherserver/adm/authenticate" method="post" target="_top">
374: <input type="hidden" name="logtoken" value="$logtoken" />
375: <input type="hidden" name="serverid" value="$lonhost" />
376: <input type="hidden" name="interface" value="$env{'form.interface'}" />
377: <input type="hidden" name="uname" value="" />
378: <input type="hidden" name="upass0" value="" />
379: <input type="hidden" name="upass1" value="" />
380: <input type="hidden" name="upass2" value="" />
381: <input type="hidden" name="udom" value="" />
382: <input type="hidden" name="imagesuppress" value="" />
383: <input type="hidden" name="appletsuppress" value="" />
384: <input type="hidden" name="embedsuppress" value="" />
385: <input type="hidden" name="fontenhance" value="" />
386: <input type="hidden" name="blackwhite" value="" />
387: <input type="hidden" name="remember" value="" />
388: <input type="hidden" name="localpath" value="$env{'form.localpath'}" />
389: <input type="hidden" name="localres" value="$env{'form.localres'}" />
390: </form>
391: ENDSERVERFORM
392: if ($fullgraph) { $r->print(<<ENDTOP);
393: <!-- The LON-CAPA Header -->
394: <tr>
395:
396: <!-- Row 1 Columns 2-4 -->
397: <td width="100%" height=75 colspan=4 align="left" valign="top" bgcolor="$pgbg"><img src="$img" border=0 alt="The Learning Online Network with CAPA" /></td>
398: </tr>
399:
400: <!-- The gray bar that starts the two table frames -->
401: <tr>
402:
403: <!-- Row 2 Column 1 -->
404: <td width=182 height=27 bgcolor="$sidebg"> </td>
405:
406: <!-- Row 2 Column 2 -->
407: <td width=27 height=27 align="left" background="$iconpath/filltop.gif"><img src="$iconpath/upperleft.gif" border=0 alt="" /></td>
408:
409: <!-- Row 2 Column 3 -->
410: <td height=27 background="$iconpath/filltop.gif"><img src="$iconpath/filltop.gif" alt="" /></td>
411:
412: <!-- Row 2 Column 4 -->
413: <td width=27 height=27 align="right" background="$iconpath/filltop.gif"><img src="$iconpath/upperright.gif" border=0 alt="" /></td>
414: </tr>
415: <tr>
416:
417: <!-- A cell that will hold the 'access' and 'about' buttons -->
418: <!-- Row 3 Column 1 -->
419: <td valign="top" height=60 align="center" bgcolor="$sidebg">
420: <a href="/adm/login?interface=textual"><img src="$iconpath/$lt{'access'}" border=0 alt="Accessibility Options" /></a>
421: <br />
422: <a href="/adm/about.html"><img src="$iconpath/$lt{'about'}" border=0 alt="About LON-CAPA" /></a>
423: </td>
424:
425: <!-- The shaded space between the two main columns -->
426: <!-- Row 3 Column 2 -->
427: <td width=27 height=60 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" alt="" /></td>
428:
429: <!-- The right main column holding the large LON-CAPA logo-->
430: <!-- Rows 3-4 Column 3 -->
431: <td align="center" valign="top" width="100%" height="100%" bgcolor="$mainbg">
432: <center>
433: <img src="$logo" alt="" />
434: </center>
435: </td>
436:
437: <!-- Row 3 Column 4 -->
438: <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" alt="" /></td>
439: </tr>
440: <tr>
441:
442: <!-- The entry form -->
443: <!-- Row 4 Column 1 -->
444: <td align="center" valign="middle" bgcolor="$sidebg">
445: ENDTOP
446: } else {
447: $r->print('<h1>The Learning<i>Online</i> Network with CAPA</h1><h2>Text-based Interface Login</h2>'.$announcements);
448: }
449: $r->print('<form name="client" onsubmit="return(send())">');
450: unless ($fullgraph) {
451: $r->print(<<ENDACCESSOPTIONS);
452: <h3>Select Accessibility Options</h3>
453: <label><input type="checkbox" name="imagesuppress" /> Suppress rendering of images</label><br />
454: <label><input type="checkbox" name="appletsuppress" /> Suppress Java applets</label><br />
455: <label><input type="checkbox" name="embedsuppress" /> Suppress rendering of embedded multimedia</label><br />
456: <label><input type="checkbox" name="fontenhance" /> Increase font size</label><br />
457: <label><input type="checkbox" name="blackwhite" /> Switch to black and white mode</label><br />
458: <input type="checkbox" name="remember" /> Remember these settings for next login<hr />
459: ENDACCESSOPTIONS
460: } else {
461: $r->print(<<ENDNOOPT);
462: <input type="hidden" name="imagesuppress" value="" />
463: <input type="hidden" name="embedsuppress" value="" />
464: <input type="hidden" name="appletsuppress" value="" />
465: <input type="hidden" name="fontenhance" value="" />
466: <input type="hidden" name="blackwhite" value="" />
467: <input type="hidden" name="remember" value="" />
468: ENDNOOPT
469: }
470: $r->print(<<ENDLOGIN);
471: <input type="hidden" name="lextkey" value="$lextkey">
472: <input type="hidden" name="uextkey" value="$uextkey">
473:
474: <!-- Start the sub-table for text and input alignment -->
475: <table border=0 cellspacing=0 cellpadding=0>
476: <tr><td bgcolor="$sidebg" colspan=2><img src="$iconpath/$lt{'auth'}" alt="User Authentication" /></td></tr>
477: <tr>
478: <td bgcolor="$mainbg"><br /><font size=-1><b> $lt{'un'}:</b></font></td>
479: <td bgcolor="$mainbg"><br /><input type="text" name="uname" size="10" value="$authusername" /></td>
480: </tr>
481: <tr>
482: <td bgcolor="$mainbg"><font size=-1><b> $lt{'pw'}:</b></font></td>
483: <td bgcolor="$mainbg"><input type="password" name="upass$now" size="10" /></td>
484: </tr>
485: <tr>
486: <td bgcolor="$mainbg"><font size=-1><b> $lt{'dom'}:</b></font></td>
487: <td bgcolor="$mainbg"><input type="text" name="udom" size="10" value="$authdomain" /></td>
488: </tr>
489: <tr>
490: <td bgcolor="$mainbg"> <a href="/adm/loginproblems.html">$lt{'help'}</a></td>
491: <td bgcolor="$mainbg" valign="bottom" align="center">
492: <br />
493: <input type="submit" value="$lt{'log'}" />
494: </td>
495: </tr>
496: </table>
497: <!-- End sub-table -->
498: </form>
499: ENDLOGIN
500: if ($fullgraph) {
501: my $helpdeskscript;
502: my $contactblock = &contactdisplay(\%lt,$version,$authdomain,\$helpdeskscript);
503: $r->print(<<ENDDOCUMENT);
504: </td>
505:
506: <!-- Row 4 Column 2 -->
507: <td width=27 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" alt="" /></td>
508:
509: <!-- Row 4 Column 3 -->
510: <td bgcolor="$mainbg">$announcements</td>
511:
512: <!-- Row 4 Column 4 -->
513: <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" alt="" /></td>
514: </tr>
515: <tr>
516:
517: <!-- Row 5 Column 1 -->
518: <td bgcolor="$sidebg" valign="middle" align="left">
519: <br />
520: <table border=0 cellspacing=0 cellpadding=0>
521: <tr>
522: <td bgcolor="$sidebg" align="left" valign="top">
523: <small><b> $lt{'dom'}: </b></small>
524: </td>
525: <td bgcolor="$sidebg" align="left" valign="top">
526: <small><tt> $domain</tt></small>
527: </td>
528: </tr>
529: <tr>
530: <td bgcolor="$sidebg" align="left" valign="top">
531: <small><b> $lt{'serv'}: </b></small>
532: </td>
533: <td bgcolor="$sidebg" align="left" valign="top">
534: <small><tt> $lonhost ($role)</tt></small>
535: </td>
536: </tr>
537: <tr>
538: <td bgcolor="$sidebg" align="left" valign="top">
539: <small><b> $lt{'load'}: </b></small>
540: </td>
541: <td bgcolor="$sidebg" align="left" valign="top">
542: <small><tt> $loadpercent $lt{'perc'}</tt></small>
543: </td>
544: </tr>
545: <tr>
546: <td bgcolor="$sidebg" align="left" valign="top">
547: <small><b> $lt{'userload'}: </b></small>
548: </td>
549: <td bgcolor="$sidebg" align="left" valign="top">
550: <small><tt> $userloadpercent $lt{'perc'}</tt></small>
551: </td>
552: </tr>
553: </table>
554: <br />
555: $contactblock
556: </td>
557:
558: <!-- Row 5 Column 2 -->
559: <td width=27 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" alt="" /></td>
560:
561: <!-- Row 5 Column 3 -->
562: <td width="100%" valign="bottom" bgcolor="$mainbg">
563: $domainlogo
564: </td>
565:
566: <!-- Row 5 Column 4 -->
567: <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" alt="" /></td>
568: </tr>
569: <tr>
570:
571: <!-- Row 6 Column 1 -->
572: <td bgcolor="$sidebg"> </td>
573:
574: <!-- Row 6 Column 2 -->
575: <td align="left" background="$iconpath/fillbottom.gif"><img src="$iconpath/lowerleft.gif" alt="" /></td>
576:
577: <!-- Row 6 Column 3 -->
578: <td background="$iconpath/fillbottom.gif"><img src="$iconpath/fillbottom.gif" alt="" /></td>
579:
580: <!-- Row 6 Column 4 -->
581: <td align="right" background="$iconpath/fillbottom.gif"><img src="$iconpath/lowerright.gif" alt="" /></td>
582: </tr>
583: </table>
584:
585: <script type="text/javascript">
586: // the if prevents the script error if the browser can not handle this
587: if ( document.client.uname ) { document.client.uname.focus(); }
588: </script>
589: $helpdeskscript
590:
591: ENDDOCUMENT
592: }
593: $r->print('</body></html>');
594: return OK;
595: }
596:
597: sub contactdisplay {
598: my ($lt,$version,$authdomain,$helpdeskscript) = @_;
599: my $contactblock;
600: my $showhelpdesk = 0;
601: my $requestmail = $Apache::lonnet::perlvar{'lonSupportEMail'};
602: if ($requestmail =~ m/^[^\@]+\@[^\@]+$/) {
603: $showhelpdesk = 1;
604: }
605: if ($showhelpdesk) {
606: $contactblock .= '<b> <a href="javascript:helpdesk()">'.$$lt{'helpdesk'}.'</a></b><br />';
607: my $thisurl = &escape('/adm/login');
608: $$helpdeskscript = <<"ENDSCRIPT";
609: <script type="text/javascript">
610: function helpdesk() {
611: var codedom = document.client.udom.value;
612: if (codedom == '') {
613: codedom = "$authdomain";
614: }
615: var querystr = "origurl=$thisurl&codedom="+codedom;
616: document.location.href = "/adm/helpdesk?"+querystr;
617: return;
618: }
619: </script>
620: ENDSCRIPT
621: }
622: $contactblock .= <<"ENDBLOCK";
623: $version
624: ENDBLOCK
625: return $contactblock;
626: }
627:
628:
629: 1;
630: __END__
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