1: # The LearningOnline Network
2: # Login Screen
3: #
4: # $Id: lonlogin.pm,v 1.145 2010/09/02 09:24:42 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 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: $ENV{'REDIRECT_QUERY_STRING'}),
48: ['interface','username','domain','firsturl','localpath','localres',
49: 'token','role','symb']);
50: if (!defined($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 $r->header_only;
64:
65:
66: # Are we re-routing?
67: if (-e '/home/httpd/html/lon-status/reroute.txt') {
68: &Apache::lonauth::reroute($r);
69: return OK;
70: }
71:
72: $env{'form.firsturl'} =~ s/(`)/'/g;
73:
74: # -------------------------------- Prevent users from attempting to login twice
75: my $handle = &Apache::lonnet::check_for_valid_session($r);
76: if ($handle ne '') {
77: my $lonidsdir=$r->dir_config('lonIDsDir');
78: if ($handle=~/^publicuser\_/) {
79: # For "public user" - remove it, we apparently really want to login
80: unlink($r->dir_config('lonIDsDir')."/$handle.id");
81: } else {
82: # Indeed, a valid token is found
83: &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
84: my $start_page =
85: &Apache::loncommon::start_page('Already logged in');
86: my $end_page =
87: &Apache::loncommon::end_page();
88: my $dest = '/adm/roles';
89: if ($env{'form.firsturl'} ne '') {
90: $dest = $env{'form.firsturl'};
91: }
92: $r->print(
93: $start_page
94: .'<h1>'.&mt('You are already logged in!').'</h1>'
95: .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].',
96: '<a href="'.$dest.'">','</a>','<a href="/adm/logout">','</a>').'</p>'
97: .$end_page
98: );
99: return OK;
100: }
101: }
102:
103: # ---------------------------------------------------- No valid token, continue
104:
105: # ---------------------------- Not possible to really login to domain "public"
106: if ($env{'form.domain'} eq 'public') {
107: $env{'form.domain'}='';
108: $env{'form.username'}='';
109: }
110: # ----------------------------------------------------------- Process Interface
111: $env{'form.interface'}=~s/\W//g;
112:
113: my $httpbrowser=$ENV{"HTTP_USER_AGENT"};
114:
115: my $iconpath=
116: &Apache::loncommon::lonhttpdurl($r->dir_config('lonIconsURL'));
117:
118: my $lonhost = $r->dir_config('lonHostID');
119: my $domain = &Apache::lonnet::default_login_domain();
120: if ($lonhost ne '') {
121: my $redirect = &check_loginvia($domain,$lonhost);
122: if ($redirect) {
123: $r->print($redirect);
124: return OK;
125: }
126: }
127:
128: if (($env{'form.domain'}) &&
129: (&Apache::lonnet::domain($env{'form.domain'},'description'))) {
130: $domain=$env{'form.domain'};
131: }
132: my $role = $r->dir_config('lonRole');
133: my $loadlim = $r->dir_config('lonLoadLim');
134: my $uloadlim= $r->dir_config('lonUserLoadLim');
135: my $servadm = $r->dir_config('lonAdmEMail');
136: my $tabdir = $r->dir_config('lonTabDir');
137: my $include = $r->dir_config('lonIncludes');
138: my $expire = $r->dir_config('lonExpire');
139: my $version = $r->dir_config('lonVersion');
140: my $host_name = &Apache::lonnet::hostname($lonhost);
141:
142: # --------------------------------------------- Default values for login fields
143:
144: my $authusername=($env{'form.username'}?$env{'form.username'}:'');
145: my $authdomain=($env{'form.domain'}?$env{'form.domain'}:$domain);
146:
147: # ---------------------------------------------------------- Determine own load
148: my $loadavg;
149: {
150: my $loadfile=Apache::File->new('/proc/loadavg');
151: $loadavg=<$loadfile>;
152: }
153: $loadavg =~ s/\s.*//g;
154: my $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim);
155: unless ($loadlim) { $loadpercent='---'; }
156: my $userloadpercent=&Apache::lonnet::userload();
157: unless ($uloadlim) { $userloadpercent='---'; }
158:
159: my $firsturl=
160: ($env{'request.firsturl'}?$env{'request.firsturl'}:$env{'form.firsturl'});
161:
162: # ----------------------------------------------------------- Get announcements
163: my $announcements=&Apache::lonnet::getannounce();
164: # -------------------------------------------------------- Set login parameters
165:
166: my @hexstr=('0','1','2','3','4','5','6','7',
167: '8','9','a','b','c','d','e','f');
168: my $lkey='';
169: for (0..7) {
170: $lkey.=$hexstr[rand(15)];
171: }
172:
173: my $ukey='';
174: for (0..7) {
175: $ukey.=$hexstr[rand(15)];
176: }
177:
178: my $lextkey=hex($lkey);
179: if ($lextkey>2147483647) { $lextkey-=4294967296; }
180:
181: my $uextkey=hex($ukey);
182: if ($uextkey>2147483647) { $uextkey-=4294967296; }
183:
184: # -------------------------------------------------------- Store away log token
185: my $tokenextras;
186: if ($env{'form.role'}) {
187: $tokenextras = '&role='.&escape($env{'form.role'});
188: }
189: if ($env{'form.symb'}) {
190: if (!$tokenextras) {
191: $tokenextras = '&';
192: }
193: $tokenextras .= '&symb='.&escape($env{'form.symb'});
194: }
195: my $logtoken=Apache::lonnet::reply(
196: 'tmpput:'.$ukey.$lkey.'&'.$firsturl.$tokenextras,
197: $lonhost);
198:
199: # ------------------- If we cannot talk to ourselves, we are in serious trouble
200:
201: if ($logtoken eq 'con_lost') {
202: my $spares='';
203: my $last;
204: foreach my $hostid (sort
205: {
206: &Apache::lonnet::hostname($a) cmp
207: &Apache::lonnet::hostname($b);
208: }
209: keys(%Apache::lonnet::spareid)) {
210: next if ($hostid eq $lonhost);
211: my $hostname = &Apache::lonnet::hostname($hostid);
212: next if ($last eq $hostname);
213: $spares.='<br /><font size="+1"><a href="http://'.
214: $hostname.
215: '/adm/login?domain='.$authdomain.'">'.
216: $hostname.'</a>'.
217: ' '.&mt('(preferred)').'</font>'.$/;
218: $last=$hostname;
219: }
220: $spares.= '<br />';
221: my %all_hostnames = &Apache::lonnet::all_hostnames();
222: foreach my $hostid (sort
223: {
224: &Apache::lonnet::hostname($a) cmp
225: &Apache::lonnet::hostname($b);
226: }
227: keys(%all_hostnames)) {
228: next if ($hostid eq $lonhost || $Apache::lonnet::spareid{$hostid});
229: my $hostname = &Apache::lonnet::hostname($hostid);
230: next if ($last eq $hostname);
231: $spares.='<br /><a href="http://'.
232: $hostname.
233: '/adm/login?domain='.$authdomain.'">'.
234: $hostname.'</a>';
235: $last=$hostname;
236: }
237: $r->print(
238: '<html>'
239: .'<head><title>'
240: .&mt('The LearningOnline Network with CAPA')
241: .'</title></head>'
242: .'<body bgcolor="#FFFFFF">'
243: .'<h1>'.&mt('The LearningOnline Network with CAPA').'</h1>'
244: .'<img src="/adm/lonKaputt/lonlogo_broken.gif" align="right" />'
245: .'<h3>'.&mt('This LON-CAPA server is temporarily not available for login.').'</h3>'
246: .'<p>'.&mt('Please attempt to login to one of the following servers:').'</p>'
247: .$spares
248: .'</body>'
249: .'</html>'
250: );
251: return OK;
252: }
253:
254: # ----------------------------------------------- Apparently we are in business
255: $servadm=~s/\,/\<br \/\>/g;
256:
257: # ----------------------------------------------------------- Front page design
258: my $pgbg=&Apache::loncommon::designparm('login.pgbg',$domain);
259: my $font=&Apache::loncommon::designparm('login.font',$domain);
260: my $link=&Apache::loncommon::designparm('login.link',$domain);
261: my $vlink=&Apache::loncommon::designparm('login.vlink',$domain);
262: my $alink=&Apache::loncommon::designparm('login.alink',$domain);
263: my $mainbg=&Apache::loncommon::designparm('login.mainbg',$domain);
264: my $loginbox_bg=&Apache::loncommon::designparm('login.sidebg',$domain);
265: my $loginbox_header_bgcol=&Apache::loncommon::designparm('login.bgcol',$domain);
266: my $loginbox_header_textcol=&Apache::loncommon::designparm('login.textcol',$domain);
267: my $logo=&Apache::loncommon::designparm('login.logo',$domain);
268: my $img=&Apache::loncommon::designparm('login.img',$domain);
269: my $domainlogo=&Apache::loncommon::domainlogo($domain);
270: my $showbanner = 1;
271: my $showmainlogo = 1;
272: if (defined(&Apache::loncommon::designparm('login.showlogo_img',$domain))) {
273: $showbanner = &Apache::loncommon::designparm('login.showlogo_img',$domain);
274: }
275: if (defined(&Apache::loncommon::designparm('login.showlogo_logo',$domain))) {
276: $showmainlogo = &Apache::loncommon::designparm('login.showlogo_logo',$domain);
277: }
278: my $showadminmail=&Apache::loncommon::designparm('login.adminmail',$domain);
279: my $showcoursecat =
280: &Apache::loncommon::designparm('login.coursecatalog',$domain);
281: my $shownewuserlink =
282: &Apache::loncommon::designparm('login.newuser',$domain);
283: my $now=time;
284: my $js = (<<ENDSCRIPT);
285:
286: <script type="text/javascript" language="JavaScript">
287: // <![CDATA[
288: function send()
289: {
290: this.document.server.elements.uname.value
291: =this.document.client.elements.uname.value;
292:
293: this.document.server.elements.udom.value
294: =this.document.client.elements.udom.value;
295:
296: uextkey=this.document.client.elements.uextkey.value;
297: lextkey=this.document.client.elements.lextkey.value;
298: initkeys();
299:
300: this.document.server.elements.upass0.value
301: =crypted(this.document.client.elements.upass$now.value.substr(0,15));
302: this.document.server.elements.upass1.value
303: =crypted(this.document.client.elements.upass$now.value.substr(15,15));
304: this.document.server.elements.upass2.value
305: =crypted(this.document.client.elements.upass$now.value.substr(30,15));
306:
307: this.document.client.elements.uname.value='';
308: this.document.client.elements.upass$now.value='';
309:
310: this.document.server.submit();
311: return false;
312: }
313:
314: function enableInput() {
315: this.document.client.elements.upass$now.removeAttribute("readOnly");
316: this.document.client.elements.uname.removeAttribute("readOnly");
317: this.document.client.elements.udom.removeAttribute("readOnly");
318: return;
319: }
320:
321: // ]]>
322: </script>
323:
324: ENDSCRIPT
325:
326: # --------------------------------------------------- Print login screen header
327:
328: my %add_entries = (
329: bgcolor => "$mainbg",
330: text => "$font",
331: link => "$link",
332: vlink => "$vlink",
333: alink => "$alink",
334: onload => 'javascript:enableInput();',);
335:
336: $r->print(&Apache::loncommon::start_page('The LearningOnline Network with CAPA Login',$js,
337: { 'redirect' => [$expire,'/adm/roles'],
338: 'add_entries' => \%add_entries,
339: 'only_body' => 1,}));
340:
341: # ----------------------------------------------------------------------- Texts
342:
343: my %lt=&Apache::lonlocal::texthash(
344: 'un' => 'Username',
345: 'pw' => 'Password',
346: 'dom' => 'Domain',
347: 'perc' => 'percent',
348: 'load' => 'Server Load',
349: 'userload' => 'User Load',
350: 'catalog' => 'Course/Community Catalog',
351: 'log' => 'Log in',
352: 'help' => 'Log-in Help',
353: 'serv' => 'Server',
354: 'servadm' => 'Server Administration',
355: 'helpdesk' => 'Contact Helpdesk',
356: 'forgotpw' => 'Forgot password?',
357: 'newuser' => 'New User?',
358: );
359: # -------------------------------------------------- Change password field name
360:
361: my $forgotpw = &forgotpwdisplay(%lt);
362: $forgotpw .= '<br />' if $forgotpw;
363: my $loginhelp = &loginhelpdisplay($authdomain,%lt);
364: $loginhelp .= '<br />' if $loginhelp;
365:
366: # ---------------------------------------------------- Serve out DES JavaScript
367: {
368: my $jsh=Apache::File->new($include."/londes.js");
369: $r->print(<$jsh>);
370: }
371: # ---------------------------------------------------------- Serve rest of page
372:
373: $r->print(
374: '<div class="LC_Box"'
375: .' style="margin:0 auto; padding:10px; width:90%; height: auto; background-color:#FFFFFF;">'
376: );
377:
378: #
379: # If the loadbalancing yielded just http:// because perhaps there's no loadbalancing?
380: # then just us a relative link to authenticate:
381: #
382:
383: $r->print(<<ENDSERVERFORM);
384: <form name="server" action="/adm/authenticate" method="post" target="_top">
385: <input type="hidden" name="logtoken" value="$logtoken" />
386: <input type="hidden" name="serverid" value="$lonhost" />
387: <input type="hidden" name="uname" value="" />
388: <input type="hidden" name="upass0" value="" />
389: <input type="hidden" name="upass1" value="" />
390: <input type="hidden" name="upass2" value="" />
391: <input type="hidden" name="udom" value="" />
392: <input type="hidden" name="localpath" value="$env{'form.localpath'}" />
393: <input type="hidden" name="localres" value="$env{'form.localres'}" />
394: </form>
395: ENDSERVERFORM
396: my $coursecatalog;
397: if (($showcoursecat eq '') || ($showcoursecat)) {
398: $coursecatalog = &coursecatalog_link($lt{'catalog'}).'<br />';
399: }
400: my $newuserlink;
401: if ($shownewuserlink) {
402: $newuserlink = &newuser_link($lt{'newuser'}).'<br />';
403: }
404: my $logintitle =
405: '<h2 class="LC_hcell"'
406: .' style="background:'.$loginbox_header_bgcol.';'
407: .' color:'.$loginbox_header_textcol.'">'
408: .$lt{'log'}
409: .'</h2>';
410:
411: my $noscript_warning='<noscript><span class="LC_warning"><b>'
412: .&mt('Use of LON-CAPA requires Javascript to be enabled in your web browser.')
413: .'</b></span></noscript>';
414: my $helpdeskscript;
415: my $contactblock = &contactdisplay(\%lt,$servadm,$showadminmail,
416: $authdomain,\$helpdeskscript);
417:
418: my $loginform=(<<LFORM);
419: <form name="client" action="" onsubmit="return(send())">
420: <input type="hidden" name="lextkey" value="$lextkey" />
421: <input type="hidden" name="uextkey" value="$uextkey" />
422: <b><label for="uname">$lt{'un'}</label>:</b><br />
423: <input type="text" name="uname" id="uname" size="15" value="$authusername" readonly="readonly" /><br />
424: <b><label for="upass$now">$lt{'pw'}</label>:</b><br />
425: <input type="password" name="upass$now" id="upass$now" size="15" readonly="readonly" /><br />
426: <b><label for="udom">$lt{'dom'}</label>:</b><br />
427: <input type="text" name="udom" id="udom" size="15" value="$authdomain" readonly="readonly" /><br />
428: <input type="submit" value="$lt{'log'}" />
429: </form>
430: LFORM
431:
432: if ($showbanner) {
433: $r->print(<<HEADER);
434: <!-- The LON-CAPA Header -->
435: <div style="background:$pgbg;margin:0;width:100%;">
436: <img src="$img" border="0" alt="The Learning Online Network with CAPA" />
437: </div>
438: HEADER
439: }
440: $r->print(<<ENDTOP);
441: <div style="float:left;">
442: <div class="LC_Box" style="background:$loginbox_bg;">
443: $logintitle
444: $loginform
445: $noscript_warning
446: </div>
447:
448: <div class="LC_Box" style="padding-top: 10px;">
449: $loginhelp
450: $forgotpw
451: $contactblock
452: $newuserlink
453: $coursecatalog
454: </div>
455: </div>
456:
457: <div>
458: ENDTOP
459: if ($showmainlogo) {
460: $r->print(' <img src="'.$logo.'" alt="" />'."\n");
461: }
462: $r->print(<<ENDTOP);
463: $announcements
464: </div>
465: <hr style="clear:both;" />
466: ENDTOP
467:
468: $r->print(<<ENDDOCUMENT);
469: <div style="float: left;">
470: <table border="0" cellspacing="0" cellpadding="0">
471: <tr>
472: <td align="left" valign="top">
473: <small><b>$lt{'dom'}: </b></small>
474: </td>
475: <td align="left" valign="top">
476: <small><tt> $domain</tt></small>
477: </td>
478: </tr>
479: <tr>
480: <td align="left" valign="top">
481: <small><b>$lt{'serv'}: </b></small>
482: </td>
483: <td align="left" valign="top">
484: <small><tt> $lonhost ($role)</tt></small>
485: </td>
486: </tr>
487: <tr>
488: <td align="left" valign="top">
489: <small><b>$lt{'load'}: </b></small>
490: </td>
491: <td align="left" valign="top">
492: <small><tt> $loadpercent $lt{'perc'}</tt></small>
493: </td>
494: </tr>
495: <tr>
496: <td align="left" valign="top">
497: <small><b>$lt{'userload'}: </b></small>
498: </td>
499: <td align="left" valign="top">
500: <small><tt> $userloadpercent $lt{'perc'}</tt></small>
501: </td>
502: </tr>
503: <tr>
504: <td colspan="2" align="left">
505: <small>$version</small>
506: </td>
507: </tr>
508: </table>
509: </div>
510: <div style="float: right;">
511: $domainlogo
512: </div>
513: <br style="clear:both;" />
514: </div>
515:
516: <script type="text/javascript">
517: // <![CDATA[
518: // the if prevents the script error if the browser can not handle this
519: if ( document.client.uname ) { document.client.uname.focus(); }
520: // ]]>
521: </script>
522: $helpdeskscript
523:
524: ENDDOCUMENT
525: my %endargs = ( 'noredirectlink' => 1, );
526: $r->print(&Apache::loncommon::end_page(\%endargs));
527: return OK;
528: }
529:
530: sub check_loginvia {
531: my ($domain,$lonhost) = @_;
532: if ($domain eq '' || $lonhost eq '') {
533: return;
534: }
535: my %domconfhash = &Apache::loncommon::get_domainconf($domain);
536: my $loginvia = $domconfhash{$domain.'.login.loginvia_'.$lonhost};
537: my $loginvia_exempt = $domconfhash{$domain.'.login.loginvia_exempt_'.$lonhost};
538: my $output;
539: if ($loginvia ne '') {
540: my $noredirect;
541: my $ip = $ENV{'REMOTE_ADDR'};
542: if ($ip eq '127.0.0.1') {
543: $noredirect = 1;
544: } else {
545: if ($loginvia_exempt ne '') {
546: my @exempt = split(',',$loginvia_exempt);
547: if (grep(/^\Q$ip\E$/,@exempt)) {
548: $noredirect = 1;
549: }
550: }
551: }
552: unless ($noredirect) {
553: my ($newhost,$path);
554: if ($loginvia =~ /:/) {
555: ($newhost,$path) = split(':',$loginvia);
556: } else {
557: $newhost = $loginvia;
558: }
559: if ($newhost ne $lonhost) {
560: if (&Apache::lonnet::hostname($newhost) ne '') {
561: $output = &redirect_page($newhost,$path);
562: }
563: }
564: }
565: }
566: return $output;
567: }
568:
569: sub redirect_page {
570: my ($desthost,$path) = @_;
571: my $protocol = $Apache::lonnet::protocol{$desthost};
572: $protocol = 'http' if ($protocol ne 'https');
573: unless ($path =~ m{^/}) {
574: $path = '/'.$path;
575: }
576: my $url = $protocol.'://'.&Apache::lonnet::hostname($desthost).$path;
577: if ($env{'form.firsturl'} ne '') {
578: $url .='?firsturl='.$env{'form.firsturl'};
579: }
580: my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef,
581: {'redirect' => [0,$url],});
582: my $end_page = &Apache::loncommon::end_page();
583: return $start_page.$end_page;
584: }
585:
586: sub contactdisplay {
587: my ($lt,$servadm,$showadminmail,$authdomain,$helpdeskscript) = @_;
588: my $contactblock;
589: my $showhelpdesk = 0;
590: my $requestmail = $Apache::lonnet::perlvar{'lonSupportEMail'};
591: if ($requestmail =~ m/^[^\@]+\@[^\@]+$/) {
592: $showhelpdesk = 1;
593: }
594: if ($servadm && $showadminmail) {
595: $contactblock .= $$lt{'servadm'}.':<br />'.
596: '<tt>'.$servadm.'</tt><br />';
597: }
598: if ($showhelpdesk) {
599: $contactblock .= '<a href="javascript:helpdesk()">'.$lt->{'helpdesk'}.'</a><br />';
600: my $thisurl = &escape('/adm/login');
601: $$helpdeskscript = <<"ENDSCRIPT";
602: <script type="text/javascript">
603: // <![CDATA[
604: function helpdesk() {
605: var codedom = document.client.udom.value;
606: if (codedom == '') {
607: codedom = "$authdomain";
608: }
609: var querystr = "origurl=$thisurl&codedom="+codedom;
610: document.location.href = "/adm/helpdesk?"+querystr;
611: return;
612: }
613: // ]]>
614: </script>
615: ENDSCRIPT
616: }
617: return $contactblock;
618: }
619:
620: sub forgotpwdisplay {
621: my (%lt) = @_;
622: my $prompt_for_resetpw = 1;
623: if ($prompt_for_resetpw) {
624: return '<a href="/adm/resetpw">'.$lt{'forgotpw'}.'</a>';
625: }
626: return;
627: }
628:
629: sub loginhelpdisplay {
630: my ($authdomain,%lt) = @_;
631: my $login_help = 1;
632: if ($login_help) {
633: my $dom = $authdomain;
634: if ($dom eq '') {
635: $dom = &Apache::lonnet::default_login_domain();
636: }
637: my %helpconfig = &Apache::lonnet::get_dom('configuration',['helpsettings'],$dom);
638: my $loginhelp_url = $helpconfig{'helpsettings'}{'loginhelpurl'};
639: if ($loginhelp_url ne '') {
640: return '<a href="'.$loginhelp_url.'">'.$lt{'help'}.'</a>';
641: } else {
642: return '<a href="/adm/loginproblems.html">'.$lt{'help'}.'</a>';
643: }
644: }
645: return;
646: }
647:
648: sub coursecatalog_link {
649: my ($linkname) = @_;
650: return <<"END";
651: <a href="/adm/coursecatalog">$linkname</a>
652: END
653: }
654:
655: sub newuser_link {
656: my ($linkname) = @_;
657: return '<a href="/adm/createaccount">'.$linkname.'</a>';
658: }
659:
660: 1;
661: __END__
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