1: # The LearningOnline Network
2: # Login Screen
3: #
4: # $Id: lonlogin.pm,v 1.106.4.8 2010/03/31 23:18:27 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: $ENV{'REDIRECT_QUERY_STRING'}),
48: ['interface','username','domain','firsturl','localpath','localres',
49: 'token','role','symb']);
50: if (!defined($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:
73: # -------------------------------- Prevent users from attempting to login twice
74: my $handle = &Apache::lonnet::check_for_valid_session($r);
75: if ($handle=~/^publicuser\_/) {
76: # For "public user" - remove it, we apparently really want to login
77: unlink($r->dir_config('lonIDsDir')."/$handle.id");
78: } elsif ($handle ne '') {
79: # Indeed, a valid token is found
80: my $start_page =
81: &Apache::loncommon::start_page('Already logged in');
82: my $end_page =
83: &Apache::loncommon::end_page();
84: my $dest = '/adm/roles';
85: if ($env{'form.firsturl'} ne '') {
86: $dest = $env{'form.firsturl'};
87: }
88: $r->print(
89: $start_page
90: .'<h1>'.&mt('You are already logged in!').'</h1>'
91: .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].',
92: '<a href="'.$dest.'">','</a>','<a href="/adm/logout">','</a>').'</p>'
93: .'<p><a href="/adm/loginproblems.html">'.&mt('Login problems?').'</a></p>'
94: .$end_page
95: );
96: return OK;
97: }
98:
99: # ---------------------------------------------------- No valid token, continue
100:
101: # ---------------------------- Not possible to really login to domain "public"
102: if ($env{'form.domain'} eq 'public') {
103: $env{'form.domain'}='';
104: $env{'form.username'}='';
105: }
106: # ----------------------------------------------------------- Process Interface
107: $env{'form.interface'}=~s/\W//g;
108:
109: my $textbrowsers=$r->dir_config('lonTextBrowsers');
110: my $httpbrowser=$ENV{"HTTP_USER_AGENT"};
111:
112: foreach (split(/\:/,$textbrowsers)) {
113: if ($httpbrowser=~/$_/i) {
114: $env{'form.interface'}='textual';
115: }
116: }
117:
118: my $fullgraph=($env{'form.interface'} ne 'textual');
119:
120: my $iconpath=
121: &Apache::loncommon::lonhttpdurl($r->dir_config('lonIconsURL'));
122:
123: my $lonhost = $r->dir_config('lonHostID');
124: my $domain = &Apache::lonnet::default_login_domain();
125: if ($lonhost ne '') {
126: my $redirect = &check_loginvia($domain,$lonhost);
127: if ($redirect) {
128: $r->print($redirect);
129: return OK;
130: }
131: }
132:
133: if (($env{'form.domain'}) &&
134: (&Apache::lonnet::domain($env{'form.domain'},'description'))) {
135: $domain=$env{'form.domain'};
136: }
137: my $role = $r->dir_config('lonRole');
138: my $loadlim = $r->dir_config('lonLoadLim');
139: my $servadm = $r->dir_config('lonAdmEMail');
140: my $tabdir = $r->dir_config('lonTabDir');
141: my $include = $r->dir_config('lonIncludes');
142: my $expire = $r->dir_config('lonExpire');
143: my $version = $r->dir_config('lonVersion');
144: my $host_name = &Apache::lonnet::hostname($lonhost);
145:
146: # --------------------------------------------- Default values for login fields
147:
148: my $authusername=($env{'form.username'}?$env{'form.username'}:'');
149: my $authdomain=($env{'form.domain'}?$env{'form.domain'}:$domain);
150:
151: # ---------------------------------------------------------- Determine own load
152: my $loadavg;
153: {
154: my $loadfile=Apache::File->new('/proc/loadavg');
155: $loadavg=<$loadfile>;
156: }
157: $loadavg =~ s/\s.*//g;
158: my $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim);
159: my $userloadpercent=&Apache::lonnet::userload();
160:
161: # ------------------------------------------------------- Do the load balancing
162: my $otherserver= &Apache::lonnet::absolute_url($host_name);
163: my $firsturl=
164: ($env{'request.firsturl'}?$env{'request.firsturl'}:$env{'form.firsturl'});
165: # ---------------------------------------------------------- Are we overloaded?
166: if ((($userloadpercent>100.0)||($loadpercent>100.0))) {
167: my $unloaded=Apache::lonnet::spareserver($loadpercent,$userloadpercent);
168: if ($unloaded) { $otherserver=$unloaded; }
169: }
170:
171: # ----------------------------------------------------------- Get announcements
172: my $announcements=&Apache::lonnet::getannounce();
173: # -------------------------------------------------------- Set login parameters
174:
175: my @hexstr=('0','1','2','3','4','5','6','7',
176: '8','9','a','b','c','d','e','f');
177: my $lkey='';
178: for (0..7) {
179: $lkey.=$hexstr[rand(15)];
180: }
181:
182: my $ukey='';
183: for (0..7) {
184: $ukey.=$hexstr[rand(15)];
185: }
186:
187: my $lextkey=hex($lkey);
188: if ($lextkey>2147483647) { $lextkey-=4294967296; }
189:
190: my $uextkey=hex($ukey);
191: if ($uextkey>2147483647) { $uextkey-=4294967296; }
192:
193: # -------------------------------------------------------- Store away log token
194: my $tokenextras;
195: if ($env{'form.role'}) {
196: $tokenextras = '&role='.&escape($env{'form.role'});
197: }
198: if ($env{'form.symb'}) {
199: if (!$tokenextras) {
200: $tokenextras = '&';
201: }
202: $tokenextras .= '&symb='.&escape($env{'form.symb'});
203: }
204: my $logtoken=Apache::lonnet::reply(
205: 'tmpput:'.$ukey.$lkey.'&'.$firsturl.$tokenextras,
206: $lonhost);
207:
208: # ------------------- If we cannot talk to ourselves, we are in serious trouble
209:
210: if ($logtoken eq 'con_lost') {
211: my $spares='';
212: my $last;
213: foreach my $hostid (sort
214: {
215: &Apache::lonnet::hostname($a) cmp
216: &Apache::lonnet::hostname($b);
217: }
218: keys(%Apache::lonnet::spareid)) {
219: next if ($hostid eq $lonhost);
220: my $hostname = &Apache::lonnet::hostname($hostid);
221: next if ($last eq $hostname);
222: $spares.='<br /><font size="+1"><a href="http://'.
223: $hostname.
224: '/adm/login?domain='.$authdomain.'">'.
225: $hostname.'</a>'.
226: ' '.&mt('(preferred)').'</font>'.$/;
227: $last=$hostname;
228: }
229: $spares.= '<br />';
230: my %all_hostnames = &Apache::lonnet::all_hostnames();
231: foreach my $hostid (sort
232: {
233: &Apache::lonnet::hostname($a) cmp
234: &Apache::lonnet::hostname($b);
235: }
236: keys(%all_hostnames)) {
237: next if ($hostid eq $lonhost || $Apache::lonnet::spareid{$hostid});
238: my $hostname = &Apache::lonnet::hostname($hostid);
239: next if ($last eq $hostname);
240: $spares.='<br /><a href="http://'.
241: $hostname.
242: '/adm/login?domain='.$authdomain.'">'.
243: $hostname.'</a>';
244: $last=$hostname;
245: }
246: $r->print(
247: '<html>'
248: .'<head><title>'
249: .&mt('The LearningOnline Network with CAPA')
250: .'</title></head>'
251: .'<body bgcolor="#FFFFFF">'
252: .'<h1>'.&mt('The LearningOnline Network with CAPA').'</h1>'
253: .'<img src="/adm/lonKaputt/lonlogo_broken.gif" align="right" />'
254: .'<h3>'.&mt('This LON-CAPA server is temporarily not available for login.').'</h3>'
255: .'<p>'.&mt('Please attempt to login to one of the following servers:').'</p>'
256: .$spares
257: .'</body>'
258: .'</html>'
259: );
260: return OK;
261: }
262:
263: # ----------------------------------------------- Apparently we are in business
264: $servadm=~s/\,/\<br \/\>/g;
265:
266: # ----------------------------------------------------------- Front page design
267: my $pgbg=
268: ($fullgraph?&Apache::loncommon::designparm('login.pgbg',$domain):'#FFFFFF');
269: my $font=
270: ($fullgraph?&Apache::loncommon::designparm('login.font',$domain):'#000000');
271: my $link=
272: ($fullgraph?&Apache::loncommon::designparm('login.link',$domain):'#0000FF');
273: my $vlink=
274: ($fullgraph?&Apache::loncommon::designparm('login.vlink',$domain):'#0000FF');
275: my $alink=&Apache::loncommon::designparm('login.alink',$domain);
276: my $mainbg=
277: ($fullgraph?&Apache::loncommon::designparm('login.mainbg',$domain):'#FFFFFF');
278: my $sidebg=
279: ($fullgraph?&Apache::loncommon::designparm('login.sidebg',$domain):'#FFFFFF');
280: my $textcol =
281: ($fullgraph?&Apache::loncommon::designparm('login.textcol',$domain):'#000000');
282: my $bgcol =
283: ($fullgraph?&Apache::loncommon::designparm('login.bgcol',$domain):'#FFFFFF');
284: my $logo=&Apache::loncommon::designparm('login.logo',$domain);
285: my $img=&Apache::loncommon::designparm('login.img',$domain);
286: my $domainlogo=&Apache::loncommon::domainlogo($domain);
287: my $login=&Apache::loncommon::designparm('login.login',$domain);
288: if ($login eq '') {
289: $login = $iconpath.'/'.&mt('userauthentication.gif');
290: }
291: my $showbanner = 1;
292: my $showmainlogo = 1;
293: if (defined(&Apache::loncommon::designparm('login.showlogo_img',$domain))) {
294: $showbanner = &Apache::loncommon::designparm('login.showlogo_img',$domain);
295: }
296: if (defined(&Apache::loncommon::designparm('login.showlogo_logo',$domain))) {
297: $showmainlogo = &Apache::loncommon::designparm('login.showlogo_logo',$domain);
298: }
299: my $showadminmail=&Apache::loncommon::designparm('login.adminmail',$domain);
300: my $showcoursecat =
301: &Apache::loncommon::designparm('login.coursecatalog',$domain);
302: my $loginheader =&Apache::loncommon::designparm('login.loginheader',$domain);
303: my $shownewuserlink =
304: &Apache::loncommon::designparm('login.newuser',$domain);
305: my $now=time;
306: my $js = (<<ENDSCRIPT);
307:
308: <script type="text/javascript">
309: // <![CDATA[
310: function send()
311: {
312: this.document.server.elements.uname.value
313: =this.document.client.elements.uname.value;
314:
315: this.document.server.elements.udom.value
316: =this.document.client.elements.udom.value;
317:
318: this.document.server.elements.imagesuppress.value
319: =this.document.client.elements.imagesuppress.checked;
320:
321: this.document.server.elements.embedsuppress.value
322: =this.document.client.elements.embedsuppress.checked;
323:
324: this.document.server.elements.appletsuppress.value
325: =this.document.client.elements.appletsuppress.checked;
326:
327: this.document.server.elements.fontenhance.value
328: =this.document.client.elements.fontenhance.checked;
329:
330: this.document.server.elements.blackwhite.value
331: =this.document.client.elements.blackwhite.checked;
332:
333: this.document.server.elements.remember.value
334: =this.document.client.elements.remember.checked;
335:
336: uextkey=this.document.client.elements.uextkey.value;
337: lextkey=this.document.client.elements.lextkey.value;
338: initkeys();
339:
340: this.document.server.elements.upass0.value
341: =crypted(this.document.client.elements.upass$now.value.substr(0,15));
342: this.document.server.elements.upass1.value
343: =crypted(this.document.client.elements.upass$now.value.substr(15,15));
344: this.document.server.elements.upass2.value
345: =crypted(this.document.client.elements.upass$now.value.substr(30,15));
346:
347: this.document.client.elements.uname.value='';
348: this.document.client.elements.upass$now.value='';
349:
350: this.document.server.submit();
351: return false;
352: }
353: // ]]>
354: </script>
355:
356: ENDSCRIPT
357:
358: # --------------------------------------------------- Print login screen header
359:
360: my %add_entries = (topmargin => "0",
361: leftmargin => "0",
362: marginheight => "0",
363: marginwidth => "0",
364: bgcolor => "$pgbg",
365: text => "$font",
366: link => "$link",
367: vlink => "$vlink",
368: alink => "$alink",);
369:
370: $r->print(&Apache::loncommon::start_page('The LearningOnline Network with CAPA Login',$js,
371: { 'redirect' => [$expire,'/adm/roles'],
372: 'add_entries' => \%add_entries,
373: 'only_body' => 1,}));
374:
375: # ----------------------------------------------------------------------- Texts
376:
377: my %lt=&Apache::lonlocal::texthash(
378: 'un' => 'Username',
379: 'pw' => 'Password',
380: 'dom' => 'Domain',
381: 'load' => 'Server Load',
382: 'userload' => 'User Load',
383: 'about' => 'About LON-CAPA',
384: 'access' => 'Accessibility Options',
385: 'catalog' => 'Course/Community Catalog',
386: 'log' => 'Log in',
387: 'help' => 'Log-in Help',
388: 'serv' => 'Server',
389: 'servadm' => 'Server Administration',
390: 'helpdesk' => 'Contact Helpdesk',
391: 'forgotpw' => 'Forgot password?',
392: 'newuser' => 'New User?',
393: 'options_headline' => 'Select Accessibility Options',
394: 'sprs_img' => 'Suppress rendering of images',
395: 'sprs_applet' => 'Suppress Java applets',
396: 'sprs_embed' => 'Suppress rendering of embedded multimedia',
397: 'sprs_font' => 'Increase font size',
398: 'sprs_blackwhite' => 'Switch to black and white mode',
399: 'remember' => 'Remember these settings for next login');
400: # -------------------------------------------------- Change password field name
401: my $forgotpw = &forgotpwdisplay(%lt);
402: my $loginhelp = &loginhelpdisplay(%lt);
403:
404: # ---------------------------------------------------- Serve out DES JavaScript
405: {
406: my $jsh=Apache::File->new($include."/londes.js");
407: $r->print(<$jsh>);
408: }
409: # ---------------------------------------------------------- Serve rest of page
410:
411: if ($fullgraph) {
412: $r->print(
413: '<table width="100%" cellpadding="0" cellspacing="0" border="0">');
414: }
415:
416: $r->print(<<ENDSERVERFORM);
417: <form name="server" action="$otherserver/adm/authenticate" method="post" target="_top">
418: <input type="hidden" name="logtoken" value="$logtoken" />
419: <input type="hidden" name="serverid" value="$lonhost" />
420: <input type="hidden" name="interface" value="$env{'form.interface'}" />
421: <input type="hidden" name="uname" value="" />
422: <input type="hidden" name="upass0" value="" />
423: <input type="hidden" name="upass1" value="" />
424: <input type="hidden" name="upass2" value="" />
425: <input type="hidden" name="udom" value="" />
426: <input type="hidden" name="imagesuppress" value="" />
427: <input type="hidden" name="appletsuppress" value="" />
428: <input type="hidden" name="embedsuppress" value="" />
429: <input type="hidden" name="fontenhance" value="" />
430: <input type="hidden" name="blackwhite" value="" />
431: <input type="hidden" name="remember" value="" />
432: <input type="hidden" name="localpath" value="$env{'form.localpath'}" />
433: <input type="hidden" name="localres" value="$env{'form.localres'}" />
434: </form>
435: ENDSERVERFORM
436: my $coursecatalog;
437: if (($showcoursecat eq '') || ($showcoursecat)) {
438: $coursecatalog = &coursecatalog_link($lt{'catalog'});
439: }
440: my $newuserlink;
441: if ($shownewuserlink) {
442: $newuserlink = &newuser_link($lt{'newuser'});
443: }
444: if ($fullgraph) {
445: $r->print(<<HEADER);
446: <!-- The LON-CAPA Header -->
447: <tr>
448:
449: <!-- Row 1 Columns 2-4 -->
450: <td width="100%" height=75 colspan=4 align="left" valign="top" bgcolor="$pgbg">
451: HEADER
452: if ($showbanner) {
453: $r->print(<<ENDBANNER);
454: <img src="$img" border="0" alt="The Learning Online Network with CAPA" />
455: ENDBANNER
456: }
457: $r->print(<<ENDSTART);
458: </td>
459: </tr>
460:
461: <!-- The gray bar that starts the two table frames -->
462: <tr>
463:
464: <!-- Row 2 Column 1 -->
465: <td width=182 height=27 bgcolor="$sidebg"> </td>
466:
467: <!-- Row 2 Column 2 -->
468: <td width=27 height=27 align="left" background="$iconpath/filltop.gif"><img src="$iconpath/upperleft.gif" border=0 alt="" /></td>
469:
470: <!-- Row 2 Column 3 -->
471: <td height=27 background="$iconpath/filltop.gif"><img src="$iconpath/filltop.gif" alt="" /></td>
472:
473: <!-- Row 2 Column 4 -->
474: <td width=27 height=27 align="right" background="$iconpath/filltop.gif"><img src="$iconpath/upperright.gif" border=0 alt="" /></td>
475: </tr>
476: <tr>
477:
478: <!-- A cell that will hold the 'access', 'about', and 'catalog' links -->
479: <!-- Row 3 Column 1 -->
480: <td valign="top" height="60" align="left" bgcolor="$sidebg">
481: <table cellpadding="0" cellspacing="2" border="0">
482: <tr>
483: <td> </td>
484: <td><a href="/adm/login?interface=textual"><b>$lt{'access'}</b></a></td>
485: </tr>
486: <tr>
487: <td> </td>
488: <td><a href="/adm/about.html"><b>$lt{'about'}</b></a></td>
489: </tr>$coursecatalog
490: <tr>
491: <td colspan="2"> </td>
492: </tr>
493: </table>
494: </td>
495: <!-- The shaded space between the two main columns -->
496: <!-- Row 3 Column 2 -->
497: <td width=27 height=60 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" alt="" /></td>
498:
499: <!-- The right main column holding the large LON-CAPA logo-->
500: <!-- Rows 3-4 Column 3 -->
501: <td align="center" valign="top" width="100%" height="100%" bgcolor="$mainbg">
502: ENDSTART
503: if ($showmainlogo) {
504: $r->print(<<ENDLOGO);
505: <center>
506: <img src="$logo" alt="" />
507: </center>
508: ENDLOGO
509: }
510: $r->print(<<ENDTOP);
511: </td>
512:
513: <!-- Row 3 Column 4 -->
514: <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" alt="" /></td>
515: </tr>
516: <tr>
517:
518: <!-- The entry form -->
519: <!-- Row 4 Column 1 -->
520: <td align="center" valign="middle" bgcolor="$sidebg">
521: ENDTOP
522: } else {
523: $r->print('<h1>The Learning<i>Online</i> Network with CAPA</h1>'
524: .'<h2>'.&mt('Text-based Interface Login').'</h2>'
525: .$announcements);
526: }
527: $r->print('<form name="client" action="" onsubmit="return(send())">');
528: unless ($fullgraph) {
529: $r->print(<<ENDACCESSOPTIONS);
530: <h3>$lt{'options_headline'}</h3>
531: <label><input type="checkbox" name="imagesuppress" /> $lt{'sprs_img'}</label><br />
532: <label><input type="checkbox" name="appletsuppress" /> $lt{'sprs_applet'}</label><br />
533: <label><input type="checkbox" name="embedsuppress" /> $lt{'sprs_embed'}</label><br />
534: <label><input type="checkbox" name="fontenhance" /> $lt{'sprs_font'}</label><br />
535: <label><input type="checkbox" name="blackwhite" /> $lt{'sprs_blackwhite'}</label><br />
536: <br />
537: <input type="checkbox" name="remember" /> $lt{'remember'}<hr />
538: ENDACCESSOPTIONS
539: } else {
540: $r->print(<<ENDNOOPT);
541: <input type="hidden" name="imagesuppress" value="" />
542: <input type="hidden" name="embedsuppress" value="" />
543: <input type="hidden" name="appletsuppress" value="" />
544: <input type="hidden" name="fontenhance" value="" />
545: <input type="hidden" name="blackwhite" value="" />
546: <input type="hidden" name="remember" value="" />
547: ENDNOOPT
548: }
549: my $logintitle;
550: if ($loginheader eq 'text') {
551: $logintitle = '<td bgcolor="'.$bgcol.'" colspan="2"> <b><font size="+1" color="'.$textcol.'">'.$lt{'log'}.'</font></b></td>';
552: } else {
553: $logintitle = '<td bgcolor="'.$sidebg.'" colspan="2"><img src="'.$login.'" alt="'.
554: &mt('User Authentication').'" /></td>';
555: }
556: my $noscript_warning='<td colspan="2" bgcolor="'.$mainbg.'">'
557: .'<noscript><div class="LC_warning"><font size="-1">'
558: .&mt('Use of LON-CAPA requires Javascript to be enabled in your web browser.')
559: .'</font></div></noscript></td>';
560: $r->print(<<ENDLOGIN);
561: <input type="hidden" name="lextkey" value="$lextkey" />
562: <input type="hidden" name="uextkey" value="$uextkey" />
563:
564: <!-- Start the sub-table for text and input alignment -->
565: <table border="0" cellspacing="0" cellpadding="0">
566: <tr>$logintitle</tr>
567: <tr>$noscript_warning</tr>
568: <tr>
569: <td bgcolor="$mainbg"><br /><font size=-1><b> <label for="uname">$lt{'un'}</label>:</b></font></td>
570: <td bgcolor="$mainbg"><br /><input type="text" name="uname" size="10" value="$authusername" /></td>
571: </tr>
572: <tr>
573: <td bgcolor="$mainbg"><font size=-1><b> <label for="upass$now">$lt{'pw'}</label>:</b></font></td>
574: <td bgcolor="$mainbg"><input type="password" name="upass$now" size="10" /></td>
575: </tr>
576: <tr>
577: <td bgcolor="$mainbg"><font size=-1><b> <label for="udom">$lt{'dom'}</label>:</b></font></td>
578: <td bgcolor="$mainbg"><input type="text" name="udom" size="10" value="$authdomain" /></td>
579: </tr>
580: <tr>
581: <td bgcolor="$mainbg"> </td>
582: <td bgcolor="$mainbg" valign="bottom" align="center">
583: <br />
584: <input type="submit" value="$lt{'log'}" />
585: </td>
586: </tr>
587: <tr>
588: <td bgcolor="$mainbg" valign="bottom" align="left" colspan="2">
589: $loginhelp
590: $forgotpw
591: $newuserlink
592: <br />
593: </td>
594: </tr>
595: </table>
596: <!-- End sub-table -->
597: </form>
598: ENDLOGIN
599: if ($fullgraph) {
600: my $helpdeskscript;
601: my $contactblock = &contactdisplay(\%lt,$servadm,$showadminmail,
602: $version,$authdomain,\$helpdeskscript);
603: $r->print(<<ENDDOCUMENT);
604: </td>
605:
606: <!-- Row 4 Column 2 -->
607: <td width=27 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" alt="" /></td>
608:
609: <!-- Row 4 Column 3 -->
610: <td bgcolor="$mainbg">$announcements</td>
611:
612: <!-- Row 4 Column 4 -->
613: <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" alt="" /></td>
614: </tr>
615: <tr>
616:
617: <!-- Row 5 Column 1 -->
618: <td bgcolor="$sidebg" valign="middle" align="left">
619: <br />
620: <table border="0" cellspacing="0" cellpadding="0">
621: <tr>
622: <td bgcolor="$sidebg" align="left" valign="top">
623: <small><b> $lt{'dom'}: </b></small>
624: </td>
625: <td bgcolor="$sidebg" align="left" valign="middle">
626: <small><tt> $domain</tt></small>
627: </td>
628: </tr>
629: <tr>
630: <td bgcolor="$sidebg" align="left" valign="top">
631: <small><b> $lt{'serv'}: </b></small>
632: </td>
633: <td bgcolor="$sidebg" align="left" valign="middle">
634: <small><tt> $lonhost ($role)</tt></small>
635: </td>
636: </tr>
637: <tr>
638: <td bgcolor="$sidebg" align="left" valign="top"><span class="LC_nobreak">
639: <small><b> $lt{'load'}: </b></small></span>
640: </td>
641: <td bgcolor="$sidebg" align="left" valign="middle">
642: <small><tt> $loadpercent%</tt></small>
643: </td>
644: </tr>
645: <tr>
646: <td bgcolor="$sidebg" align="left" valign="top"><span class="LC_nobreak">
647: <small><b> $lt{'userload'}: </b></small></span>
648: </td>
649: <td bgcolor="$sidebg" align="left" valign="middle">
650: <small><tt> $userloadpercent%</tt></small>
651: </td>
652: </tr>
653: </table>
654: <br />
655: $contactblock
656: </td>
657:
658: <!-- Row 5 Column 2 -->
659: <td width=27 background="$iconpath/fillleft.gif"><img src="$iconpath/fillleft.gif" alt="" /></td>
660:
661: <!-- Row 5 Column 3 -->
662: <td width="100%" valign="bottom" bgcolor="$mainbg">
663: $domainlogo
664: </td>
665:
666: <!-- Row 5 Column 4 -->
667: <td width=27 background="$iconpath/fillright.gif"><img src="$iconpath/fillright.gif" alt="" /></td>
668: </tr>
669: <tr>
670:
671: <!-- Row 6 Column 1 -->
672: <td bgcolor="$sidebg"> </td>
673:
674: <!-- Row 6 Column 2 -->
675: <td align="left" background="$iconpath/fillbottom.gif"><img src="$iconpath/lowerleft.gif" alt="" /></td>
676:
677: <!-- Row 6 Column 3 -->
678: <td background="$iconpath/fillbottom.gif"><img src="$iconpath/fillbottom.gif" alt="" /></td>
679:
680: <!-- Row 6 Column 4 -->
681: <td align="right" background="$iconpath/fillbottom.gif"><img src="$iconpath/lowerright.gif" alt="" /></td>
682: </tr>
683: </table>
684:
685: <script type="text/javascript">
686: // <![CDATA[
687: // the if prevents the script error if the browser can not handle this
688: if ( document.client.uname ) { document.client.uname.focus(); }
689: // ]]>
690: </script>
691: $helpdeskscript
692:
693: ENDDOCUMENT
694: }
695: my %endargs = ( 'noredirectlink' => 1, );
696: $r->print(&Apache::loncommon::end_page(\%endargs));
697: return OK;
698: }
699:
700: sub check_loginvia {
701: my ($domain,$lonhost) = @_;
702: if ($domain eq '' || $lonhost eq '') {
703: return;
704: }
705: my %domconfhash = &Apache::loncommon::get_domainconf($domain);
706: my $loginvia = $domconfhash{$domain.'.login.loginvia_'.$lonhost};
707: my $loginvia_exempt = $domconfhash{$domain.'.login.loginvia_exempt_'.$lonhost};
708: my $output;
709: if ($loginvia ne '') {
710: my $noredirect;
711: my $ip = $ENV{'REMOTE_ADDR'};
712: if ($ip eq '127.0.0.1') {
713: $noredirect = 1;
714: } else {
715: if ($loginvia_exempt ne '') {
716: my @exempt = split(',',$loginvia_exempt);
717: if (grep(/^\Q$ip\E$/,@exempt)) {
718: $noredirect = 1;
719: }
720: }
721: }
722: unless ($noredirect) {
723: my ($newhost,$path);
724: if ($loginvia =~ /:/) {
725: ($newhost,$path) = split(':',$loginvia);
726: } else {
727: $newhost = $loginvia;
728: }
729: if ($newhost ne $lonhost) {
730: if (&Apache::lonnet::hostname($newhost) ne '') {
731: $output = &redirect_page($newhost,$path);
732: }
733: }
734: }
735: }
736: return $output;
737: }
738:
739: sub redirect_page {
740: my ($desthost,$path) = @_;
741: my $protocol = $Apache::lonnet::protocol{$desthost};
742: $protocol = 'http' if ($protocol ne 'https');
743: unless ($path =~ m{^/}) {
744: $path = '/'.$path;
745: }
746: my $url = $protocol.'://'.&Apache::lonnet::hostname($desthost).$path;
747: if ($env{'form.firsturl'} ne '') {
748: $url .='?firsturl='.$env{'form.firsturl'};
749: }
750: my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef,
751: {'redirect' => [0,$url],});
752: my $end_page = &Apache::loncommon::end_page();
753: return $start_page.$end_page;
754: }
755:
756: sub contactdisplay {
757: my ($lt,$servadm,$showadminmail,$version,$authdomain,$helpdeskscript) = @_;
758: my $contactblock;
759: my $showhelpdesk = 0;
760: my $requestmail = $Apache::lonnet::perlvar{'lonSupportEMail'};
761: if ($requestmail =~ m/^[^\@]+\@[^\@]+$/) {
762: $showhelpdesk = 1;
763: }
764: if ($servadm && $showadminmail) {
765: $contactblock .= '<b> '.$$lt{'servadm'}.':</b><br />'.
766: '<tt> '.$servadm.'</tt><br /> <br />';
767: }
768: if ($showhelpdesk) {
769: $contactblock .= '<b> <a href="javascript:helpdesk()"><font size="+1">'.$lt->{'helpdesk'}.'</font></a></b><br />';
770: my $thisurl = &escape('/adm/login');
771: $$helpdeskscript = <<"ENDSCRIPT";
772: <script type="text/javascript">
773: // <![CDATA[
774: function helpdesk() {
775: var codedom = document.client.udom.value;
776: if (codedom == '') {
777: codedom = "$authdomain";
778: }
779: var querystr = "origurl=$thisurl&codedom="+codedom;
780: document.location.href = "/adm/helpdesk?"+querystr;
781: return;
782: }
783: // ]]>
784: </script>
785: ENDSCRIPT
786: }
787: $contactblock .= <<"ENDBLOCK";
788: $version
789: ENDBLOCK
790: return $contactblock;
791: }
792:
793: sub forgotpwdisplay {
794: my (%lt) = @_;
795: my $prompt_for_resetpw = 1;
796: if ($prompt_for_resetpw) {
797: return '<br /> <a href="/adm/resetpw">'.$lt{'forgotpw'}.'</a></b><br />';
798: }
799: return;
800: }
801:
802: sub loginhelpdisplay {
803: my (%lt) = @_;
804: my $login_help = 1;
805: if ($login_help) {
806: return ' <a href="/adm/loginproblems.html">'.$lt{'help'}.'</a></b>';
807: }
808: return;
809: }
810:
811: sub coursecatalog_link {
812: my ($linkname) = @_;
813: return <<"END";
814: <tr>
815: <td> </td>
816: <td><span class="LC_nobreak"><a href="/adm/coursecatalog"><b>$linkname</b></a></span></td>
817: </tr>
818: END
819: }
820:
821: sub newuser_link {
822: my ($linkname) = @_;
823: return ' <a href="/adm/createaccount"><b>'.$linkname.'</b></a><br />';
824: }
825:
826: 1;
827: __END__
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