1: # The LearningOnline Network
2: # Login Screen
3: #
4: # $Id: lonlogin.pm,v 1.171 2017/09/25 00:36:30 raeburn Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28:
29: package Apache::lonlogin;
30:
31: use strict;
32: use Apache::Constants qw(:common);
33: use Apache::File ();
34: use Apache::lonnet;
35: use Apache::loncommon();
36: use Apache::lonauth();
37: use Apache::lonlocal;
38: use Apache::migrateuser();
39: use lib '/home/httpd/lib/perl/';
40: use LONCAPA;
41: use CGI::Cookie();
42:
43: sub handler {
44: my $r = shift;
45:
46: &Apache::loncommon::get_unprocessed_cgi
47: (join('&',$ENV{'QUERY_STRING'},$env{'request.querystring'},
48: $ENV{'REDIRECT_QUERY_STRING'}),
49: ['interface','username','domain','firsturl','localpath','localres',
50: 'token','role','symb','iptoken']);
51: if (!defined($env{'form.firsturl'})) {
52: &Apache::lonacc::get_posted_cgi($r,['firsturl']);
53: }
54:
55: # -- check if they are a migrating user
56: if (defined($env{'form.token'})) {
57: return &Apache::migrateuser::handler($r);
58: }
59:
60: # For "public user" - remove any exising "public" cookie, as user really wants to log-in
61: my ($handle,$lonidsdir,$expirepub,$userdom);
62: unless ($r->header_only) {
63: $handle = &Apache::lonnet::check_for_valid_session($r,'lonID',undef,\$userdom);
64: if ($handle ne '') {
65: $lonidsdir=$r->dir_config('lonIDsDir');
66: if ($handle=~/^publicuser\_/) {
67: unlink($r->dir_config('lonIDsDir')."/$handle.id");
68: undef($handle);
69: undef($userdom);
70: $expirepub = 1;
71: }
72: }
73: }
74:
75: &Apache::loncommon::no_cache($r);
76: &Apache::lonlocal::get_language_handle($r);
77: &Apache::loncommon::content_type($r,'text/html');
78: if ($expirepub) {
79: my $c = new CGI::Cookie(-name => 'lonPubID',
80: -value => '',
81: -expires => '-10y',);
82: $r->header_out('Set-cookie' => $c);
83: } elsif (($handle eq '') && ($userdom ne '')) {
84: my $c = new CGI::Cookie(-name => 'lonID',
85: -value => '',
86: -expires => '-10y',);
87: $r->headers_out->add('Set-cookie' => $c);
88: }
89: $r->send_http_header;
90: return OK if $r->header_only;
91:
92:
93: # Are we re-routing?
94: my $londocroot = $r->dir_config('lonDocRoot');
95: if (-e "$londocroot/lon-status/reroute.txt") {
96: &Apache::lonauth::reroute($r);
97: return OK;
98: }
99:
100: #
101: # If browser sent an old cookie for which the session file had been removed
102: # check if configuration for user's domain has a portal URL set. If so
103: # switch user's log-in to the portal.
104: #
105:
106: if (($handle eq '') && ($userdom ne '')) {
107: my %domdefaults = &Apache::lonnet::get_domain_defaults($userdom);
108: if ($domdefaults{'portal_def'} =~ /^https?\:/) {
109: my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef,
110: {'redirect' => [0,$domdefaults{'portal_def'}],});
111: my $end_page = &Apache::loncommon::end_page();
112: $r->print($start_page.$end_page);
113: return OK;
114: }
115: }
116:
117: $env{'form.firsturl'} =~ s/(`)/'/g;
118:
119: # -------------------------------- Prevent users from attempting to login twice
120: if ($handle ne '') {
121: &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
122: my $start_page =
123: &Apache::loncommon::start_page('Already logged in');
124: my $end_page =
125: &Apache::loncommon::end_page();
126: my $dest = '/adm/roles';
127: if ($env{'form.firsturl'} ne '') {
128: $dest = $env{'form.firsturl'};
129: }
130: $r->print(
131: $start_page
132: .'<p class="LC_warning">'.&mt('You are already logged in!').'</p>'
133: .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].',
134: '<a href="'.$dest.'">','</a>','<a href="/adm/logout">','</a>').'</p>'
135: .$end_page
136: );
137: return OK;
138: }
139:
140: # ---------------------------------------------------- No valid token, continue
141:
142: # ---------------------------- Not possible to really login to domain "public"
143: if ($env{'form.domain'} eq 'public') {
144: $env{'form.domain'}='';
145: $env{'form.username'}='';
146: }
147:
148: # ------ Is this page requested because /adm/migrateuser detected an IP change?
149: my %sessiondata;
150: if ($env{'form.iptoken'}) {
151: %sessiondata = &Apache::lonnet::tmpget($env{'form.iptoken'});
152: unless ($sessiondata{'sessionserver'}) {
153: my $delete = &Apache::lonnet::tmpdel($env{'form.iptoken'});
154: delete($env{'form.iptoken'});
155: }
156: }
157: # ----------------------------------------------------------- Process Interface
158: $env{'form.interface'}=~s/\W//g;
159:
160: (undef,undef,undef,undef,undef,undef,my $clientmobile) =
161: &Apache::loncommon::decode_user_agent();
162:
163: my $iconpath=
164: &Apache::loncommon::lonhttpdurl($r->dir_config('lonIconsURL'));
165:
166: my $lonhost = $r->dir_config('lonHostID');
167: my $domain = &Apache::lonnet::default_login_domain();
168: my $defdom = $domain;
169: if ($lonhost ne '') {
170: unless ($sessiondata{'sessionserver'}) {
171: my $redirect = &check_loginvia($domain,$lonhost);
172: if ($redirect) {
173: $r->print($redirect);
174: return OK;
175: }
176: }
177: }
178:
179: if (($sessiondata{'domain'}) &&
180: (&Apache::lonnet::domain($env{'form.domain'},'description'))) {
181: $domain=$sessiondata{'domain'};
182: } elsif (($env{'form.domain'}) &&
183: (&Apache::lonnet::domain($env{'form.domain'},'description'))) {
184: $domain=$env{'form.domain'};
185: }
186:
187: my $role = $r->dir_config('lonRole');
188: my $loadlim = $r->dir_config('lonLoadLim');
189: my $uloadlim= $r->dir_config('lonUserLoadLim');
190: my $servadm = $r->dir_config('lonAdmEMail');
191: my $tabdir = $r->dir_config('lonTabDir');
192: my $include = $r->dir_config('lonIncludes');
193: my $expire = $r->dir_config('lonExpire');
194: my $version = $r->dir_config('lonVersion');
195: my $host_name = &Apache::lonnet::hostname($lonhost);
196:
197: # --------------------------------------------- Default values for login fields
198:
199: my ($authusername,$authdomain);
200: if ($sessiondata{'username'}) {
201: $authusername=$sessiondata{'username'};
202: } else {
203: $env{'form.username'} = &Apache::loncommon::cleanup_html($env{'form.username'});
204: $authusername=($env{'form.username'}?$env{'form.username'}:'');
205: }
206: if ($sessiondata{'domain'}) {
207: $authdomain=$sessiondata{'domain'};
208: } else {
209: $env{'form.domain'} = &Apache::loncommon::cleanup_html($env{'form.domain'});
210: $authdomain=($env{'form.domain'}?$env{'form.domain'}:$domain);
211: }
212:
213: # ---------------------------------------------------------- Determine own load
214: my $loadavg;
215: {
216: my $loadfile=Apache::File->new('/proc/loadavg');
217: $loadavg=<$loadfile>;
218: }
219: $loadavg =~ s/\s.*//g;
220:
221: my ($loadpercent,$userloadpercent);
222: if ($loadlim) {
223: $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim);
224: }
225: if ($uloadlim) {
226: $userloadpercent=&Apache::lonnet::userload();
227: }
228:
229: my $firsturl=
230: ($env{'request.firsturl'}?$env{'request.firsturl'}:$env{'form.firsturl'});
231:
232: # ----------------------------------------------------------- Get announcements
233: my $announcements=&Apache::lonnet::getannounce();
234: # -------------------------------------------------------- Set login parameters
235:
236: my @hexstr=('0','1','2','3','4','5','6','7',
237: '8','9','a','b','c','d','e','f');
238: my $lkey='';
239: for (0..7) {
240: $lkey.=$hexstr[rand(15)];
241: }
242:
243: my $ukey='';
244: for (0..7) {
245: $ukey.=$hexstr[rand(15)];
246: }
247:
248: my $lextkey=hex($lkey);
249: if ($lextkey>2147483647) { $lextkey-=4294967296; }
250:
251: my $uextkey=hex($ukey);
252: if ($uextkey>2147483647) { $uextkey-=4294967296; }
253:
254: # -------------------------------------------------------- Store away log token
255: my $tokenextras;
256: if ($env{'form.role'}) {
257: $tokenextras = '&role='.&escape($env{'form.role'});
258: }
259: if ($env{'form.symb'}) {
260: if (!$tokenextras) {
261: $tokenextras = '&';
262: }
263: $tokenextras .= '&symb='.&escape($env{'form.symb'});
264: }
265: if ($env{'form.iptoken'}) {
266: if (!$tokenextras) {
267: $tokenextras = '&&';
268: }
269: $tokenextras .= '&iptoken='.&escape($env{'form.iptoken'});
270: }
271: my $logtoken=Apache::lonnet::reply(
272: 'tmpput:'.$ukey.$lkey.'&'.$firsturl.$tokenextras,
273: $lonhost);
274:
275: # -- If we cannot talk to ourselves, or hostID does not map to a hostname
276: # we are in serious trouble
277:
278: if (($logtoken eq 'con_lost') || ($logtoken eq 'no_such_host')) {
279: if ($logtoken eq 'no_such_host') {
280: &Apache::lonnet::logthis('No valid logtoken for log-in page -- unable to determine hostname for hostID: '.$lonhost.'. Check entry in hosts.tab');
281: }
282: my $spares='';
283: my $last;
284: foreach my $hostid (sort
285: {
286: &Apache::lonnet::hostname($a) cmp
287: &Apache::lonnet::hostname($b);
288: }
289: keys(%Apache::lonnet::spareid)) {
290: next if ($hostid eq $lonhost);
291: my $hostname = &Apache::lonnet::hostname($hostid);
292: next if (($last eq $hostname) || ($hostname eq ''));
293: $spares.='<br /><font size="+1"><a href="http://'.
294: $hostname.
295: '/adm/login?domain='.$authdomain.'">'.
296: $hostname.'</a>'.
297: ' '.&mt('(preferred)').'</font>'.$/;
298: $last=$hostname;
299: }
300: if ($spares) {
301: $spares.= '<br />';
302: }
303: my %all_hostnames = &Apache::lonnet::all_hostnames();
304: foreach my $hostid (sort
305: {
306: &Apache::lonnet::hostname($a) cmp
307: &Apache::lonnet::hostname($b);
308: }
309: keys(%all_hostnames)) {
310: next if ($hostid eq $lonhost || $Apache::lonnet::spareid{$hostid});
311: my $hostname = &Apache::lonnet::hostname($hostid);
312: next if (($last eq $hostname) || ($hostname eq ''));
313: $spares.='<br /><a href="http://'.
314: $hostname.
315: '/adm/login?domain='.$authdomain.'">'.
316: $hostname.'</a>';
317: $last=$hostname;
318: }
319: $r->print(
320: '<html>'
321: .'<head><title>'
322: .&mt('The LearningOnline Network with CAPA')
323: .'</title></head>'
324: .'<body bgcolor="#FFFFFF">'
325: .'<h1>'.&mt('The LearningOnline Network with CAPA').'</h1>'
326: .'<img src="/adm/lonKaputt/lonlogo_broken.gif" align="right" />'
327: .'<h3>'.&mt('This LON-CAPA server is temporarily not available for login.').'</h3>');
328: if ($spares) {
329: $r->print('<p>'.&mt('Please attempt to login to one of the following servers:')
330: .'</p>'
331: .$spares);
332: }
333: $r->print('</body>'
334: .'</html>'
335: );
336: return OK;
337: }
338:
339: # ----------------------------------------------- Apparently we are in business
340: $servadm=~s/\,/\<br \/\>/g;
341:
342: # ----------------------------------------------------------- Front page design
343: my $pgbg=&Apache::loncommon::designparm('login.pgbg',$domain);
344: my $font=&Apache::loncommon::designparm('login.font',$domain);
345: my $link=&Apache::loncommon::designparm('login.link',$domain);
346: my $vlink=&Apache::loncommon::designparm('login.vlink',$domain);
347: my $alink=&Apache::loncommon::designparm('login.alink',$domain);
348: my $mainbg=&Apache::loncommon::designparm('login.mainbg',$domain);
349: my $loginbox_bg=&Apache::loncommon::designparm('login.sidebg',$domain);
350: my $loginbox_header_bgcol=&Apache::loncommon::designparm('login.bgcol',$domain);
351: my $loginbox_header_textcol=&Apache::loncommon::designparm('login.textcol',$domain);
352: my $logo=&Apache::loncommon::designparm('login.logo',$domain);
353: my $img=&Apache::loncommon::designparm('login.img',$domain);
354: my $domainlogo=&Apache::loncommon::domainlogo($domain);
355: my $showbanner = 1;
356: my $showmainlogo = 1;
357: if (defined(&Apache::loncommon::designparm('login.showlogo_img',$domain))) {
358: $showbanner = &Apache::loncommon::designparm('login.showlogo_img',$domain);
359: }
360: if (defined(&Apache::loncommon::designparm('login.showlogo_logo',$domain))) {
361: $showmainlogo = &Apache::loncommon::designparm('login.showlogo_logo',$domain);
362: }
363: my $showadminmail;
364: my @possdoms = &Apache::lonnet::current_machine_domains();
365: if (grep(/^\Q$domain\E$/,@possdoms)) {
366: $showadminmail=&Apache::loncommon::designparm('login.adminmail',$domain);
367: }
368: my $showcoursecat =
369: &Apache::loncommon::designparm('login.coursecatalog',$domain);
370: my $shownewuserlink =
371: &Apache::loncommon::designparm('login.newuser',$domain);
372: my $showhelpdesk =
373: &Apache::loncommon::designparm('login.helpdesk',$domain);
374: my $now=time;
375: my $js = (<<ENDSCRIPT);
376:
377: <script type="text/javascript" language="JavaScript">
378: // <![CDATA[
379: function send()
380: {
381: this.document.server.elements.uname.value
382: =this.document.client.elements.uname.value;
383:
384: this.document.server.elements.udom.value
385: =this.document.client.elements.udom.value;
386:
387: uextkey=this.document.client.elements.uextkey.value;
388: lextkey=this.document.client.elements.lextkey.value;
389: initkeys();
390:
391: if(this.document.server.action.substr(0,5) === 'http:'){
392: this.document.server.elements.upass0.value
393: =getCrypted(this.document.client.elements.upass$now.value);
394: } else {
395: this.document.server.elements.upass0.value
396: =this.document.client.elements.upass$now.value;
397: }
398:
399: this.document.client.elements.uname.value='';
400: this.document.client.elements.upass$now.value='';
401:
402: this.document.server.submit();
403: return false;
404: }
405:
406: function enableInput() {
407: this.document.client.elements.upass$now.removeAttribute("readOnly");
408: this.document.client.elements.uname.removeAttribute("readOnly");
409: this.document.client.elements.udom.removeAttribute("readOnly");
410: return;
411: }
412:
413: // ]]>
414: </script>
415:
416: ENDSCRIPT
417:
418: # --------------------------------------------------- Print login screen header
419:
420: my %add_entries = (
421: bgcolor => "$mainbg",
422: text => "$font",
423: link => "$link",
424: vlink => "$vlink",
425: alink => "$alink",
426: onload => 'javascript:enableInput();',);
427:
428: my ($lonhost_in_use,$headextra,$headextra_exempt,@hosts,%defaultdomconf);
429: @hosts = &Apache::lonnet::current_machine_ids();
430: $lonhost_in_use = $lonhost;
431: if (@hosts > 1) {
432: foreach my $hostid (@hosts) {
433: if (&Apache::lonnet::host_domain($hostid) eq $defdom) {
434: $lonhost_in_use = $hostid;
435: last;
436: }
437: }
438: }
439: %defaultdomconf = &Apache::loncommon::get_domainconf($defdom);
440: $headextra = $defaultdomconf{$defdom.'.login.headtag_'.$lonhost_in_use};
441: $headextra_exempt = $defaultdomconf{$domain.'.login.headtag_exempt_'.$lonhost_in_use};
442: if ($headextra) {
443: my $omitextra;
444: if ($headextra_exempt ne '') {
445: my @exempt = split(',',$headextra_exempt);
446: my $ip = $ENV{'REMOTE_ADDR'};
447: if (grep(/^\Q$ip\E$/,@exempt)) {
448: $omitextra = 1;
449: }
450: }
451: unless ($omitextra) {
452: my $confname = $defdom.'-domainconfig';
453: if ($headextra =~ m{^\Q/res/$defdom/$confname/login/headtag/$lonhost_in_use/\E}) {
454: my $extra = &Apache::lonnet::getfile(&Apache::lonnet::filelocation("",$headextra));
455: unless ($extra eq '-1') {
456: $js .= "\n".$extra."\n";
457: }
458: }
459: }
460: }
461:
462: $r->print(&Apache::loncommon::start_page('The LearningOnline Network with CAPA Login',$js,
463: { 'redirect' => [$expire,'/adm/roles'],
464: 'add_entries' => \%add_entries,
465: 'only_body' => 1,}));
466:
467: # ----------------------------------------------------------------------- Texts
468:
469: my %lt=&Apache::lonlocal::texthash(
470: 'un' => 'Username',
471: 'pw' => 'Password',
472: 'dom' => 'Domain',
473: 'perc' => 'percent',
474: 'load' => 'Server Load',
475: 'userload' => 'User Load',
476: 'catalog' => 'Course/Community Catalog',
477: 'log' => 'Log in',
478: 'help' => 'Log-in Help',
479: 'serv' => 'Server',
480: 'servadm' => 'Server Administration',
481: 'helpdesk' => 'Contact Helpdesk',
482: 'forgotpw' => 'Forgot password?',
483: 'newuser' => 'New User?',
484: );
485: # -------------------------------------------------- Change password field name
486:
487: my $forgotpw = &forgotpwdisplay(%lt);
488: $forgotpw .= '<br />' if $forgotpw;
489: my $loginhelp = &Apache::lonauth::loginhelpdisplay($authdomain);
490: if ($loginhelp) {
491: $loginhelp = '<a href="'.$loginhelp.'">'.$lt{'help'}.'</a><br />';
492: }
493:
494: # ---------------------------------------------------- Serve out DES JavaScript
495: {
496: my $jsh=Apache::File->new($include."/londes.js");
497: $r->print(<$jsh>);
498: }
499: # ---------------------------------------------------------- Serve rest of page
500:
501: $r->print(
502: '<div class="LC_Box"'
503: .' style="margin:0 auto; padding:10px; width:90%; height: auto; background-color:#FFFFFF;">'
504: );
505:
506: $r->print(<<ENDSERVERFORM);
507: <form name="server" action="/adm/authenticate" method="post" target="_top">
508: <input type="hidden" name="logtoken" value="$logtoken" />
509: <input type="hidden" name="serverid" value="$lonhost" />
510: <input type="hidden" name="uname" value="" />
511: <input type="hidden" name="upass0" value="" />
512: <input type="hidden" name="udom" value="" />
513: <input type="hidden" name="localpath" value="$env{'form.localpath'}" />
514: <input type="hidden" name="localres" value="$env{'form.localres'}" />
515: </form>
516: ENDSERVERFORM
517: my $coursecatalog;
518: if (($showcoursecat eq '') || ($showcoursecat)) {
519: $coursecatalog = &coursecatalog_link($lt{'catalog'}).'<br />';
520: }
521: my $newuserlink;
522: if ($shownewuserlink) {
523: $newuserlink = &newuser_link($lt{'newuser'}).'<br />';
524: }
525: my $logintitle =
526: '<h2 class="LC_hcell"'
527: .' style="background:'.$loginbox_header_bgcol.';'
528: .' color:'.$loginbox_header_textcol.'">'
529: .$lt{'log'}
530: .'</h2>';
531:
532: my $noscript_warning='<noscript><span class="LC_warning"><b>'
533: .&mt('Use of LON-CAPA requires Javascript to be enabled in your web browser.')
534: .'</b></span></noscript>';
535: my $helpdeskscript;
536: my $contactblock = &contactdisplay(\%lt,$servadm,$showadminmail,
537: $authdomain,\$helpdeskscript,
538: $showhelpdesk,\@possdoms);
539:
540: my $mobileargs;
541: if ($clientmobile) {
542: $mobileargs = 'autocapitalize="off" autocorrect="off"';
543: }
544: my $loginform=(<<LFORM);
545: <form name="client" action="" onsubmit="return(send())">
546: <input type="hidden" name="lextkey" value="$lextkey" />
547: <input type="hidden" name="uextkey" value="$uextkey" />
548: <b><label for="uname">$lt{'un'}</label>:</b><br />
549: <input type="text" name="uname" id="uname" size="15" value="$authusername" readonly="readonly" $mobileargs /><br />
550: <b><label for="upass$now">$lt{'pw'}</label>:</b><br />
551: <input type="password" name="upass$now" id="upass$now" size="15" readonly="readonly" /><br />
552: <b><label for="udom">$lt{'dom'}</label>:</b><br />
553: <input type="text" name="udom" id="udom" size="15" value="$authdomain" readonly="readonly" $mobileargs /><br />
554: <input type="submit" value="$lt{'log'}" />
555: </form>
556: LFORM
557:
558: if ($showbanner) {
559: $r->print(<<HEADER);
560: <!-- The LON-CAPA Header -->
561: <div style="background:$pgbg;margin:0;width:100%;">
562: <img src="$img" border="0" alt="The Learning Online Network with CAPA" class="LC_maxwidth" />
563: </div>
564: HEADER
565: }
566: $r->print(<<ENDTOP);
567: <div style="float:left;margin-top:0;">
568: <div class="LC_Box" style="background:$loginbox_bg;">
569: $logintitle
570: $loginform
571: $noscript_warning
572: </div>
573:
574: <div class="LC_Box" style="padding-top: 10px;">
575: $loginhelp
576: $forgotpw
577: $contactblock
578: $newuserlink
579: $coursecatalog
580: </div>
581: </div>
582:
583: <div>
584: ENDTOP
585: if ($showmainlogo) {
586: $r->print(' <img src="'.$logo.'" alt="" class="LC_maxwidth" />'."\n");
587: }
588: $r->print(<<ENDTOP);
589: $announcements
590: </div>
591: <hr style="clear:both;" />
592: ENDTOP
593: my ($domainrow,$serverrow,$loadrow,$userloadrow,$versionrow);
594: $domainrow = <<"END";
595: <tr>
596: <td align="left" valign="top">
597: <small><b>$lt{'dom'}: </b></small>
598: </td>
599: <td align="left" valign="top">
600: <small><tt> $domain</tt></small>
601: </td>
602: </tr>
603: END
604: $serverrow = <<"END";
605: <tr>
606: <td align="left" valign="top">
607: <small><b>$lt{'serv'}: </b></small>
608: </td>
609: <td align="left" valign="top">
610: <small><tt> $lonhost ($role)</tt></small>
611: </td>
612: </tr>
613: END
614: if ($loadlim) {
615: $loadrow = <<"END";
616: <tr>
617: <td align="left" valign="top">
618: <small><b>$lt{'load'}: </b></small>
619: </td>
620: <td align="left" valign="top">
621: <small><tt> $loadpercent $lt{'perc'}</tt></small>
622: </td>
623: </tr>
624: END
625: }
626: if ($uloadlim) {
627: $userloadrow = <<"END";
628: <tr>
629: <td align="left" valign="top">
630: <small><b>$lt{'userload'}: </b></small>
631: </td>
632: <td align="left" valign="top">
633: <small><tt> $userloadpercent $lt{'perc'}</tt></small>
634: </td>
635: </tr>
636: END
637: }
638: if (($version ne '') && ($version ne '<!-- VERSION -->')) {
639: $versionrow = <<"END";
640: <tr>
641: <td colspan="2" align="left">
642: <small>$version</small>
643: </td>
644: </tr>
645: END
646: }
647:
648: $r->print(<<ENDDOCUMENT);
649: <div style="float: left;">
650: <table border="0" cellspacing="0" cellpadding="0">
651: $domainrow
652: $serverrow
653: $loadrow
654: $userloadrow
655: $versionrow
656: </table>
657: </div>
658: <div style="float: right;">
659: $domainlogo
660: </div>
661: <br style="clear:both;" />
662: </div>
663:
664: <script type="text/javascript">
665: // <![CDATA[
666: // the if prevents the script error if the browser can not handle this
667: if ( document.client.uname ) { document.client.uname.focus(); }
668: // ]]>
669: </script>
670: $helpdeskscript
671:
672: ENDDOCUMENT
673: my %endargs = ( 'noredirectlink' => 1, );
674: $r->print(&Apache::loncommon::end_page(\%endargs));
675: return OK;
676: }
677:
678: sub check_loginvia {
679: my ($domain,$lonhost) = @_;
680: if ($domain eq '' || $lonhost eq '') {
681: return;
682: }
683: my %domconfhash = &Apache::loncommon::get_domainconf($domain);
684: my $loginvia = $domconfhash{$domain.'.login.loginvia_'.$lonhost};
685: my $loginvia_exempt = $domconfhash{$domain.'.login.loginvia_exempt_'.$lonhost};
686: my $output;
687: if ($loginvia ne '') {
688: my $noredirect;
689: my $ip = $ENV{'REMOTE_ADDR'};
690: if ($ip eq '127.0.0.1') {
691: $noredirect = 1;
692: } else {
693: if ($loginvia_exempt ne '') {
694: my @exempt = split(',',$loginvia_exempt);
695: if (grep(/^\Q$ip\E$/,@exempt)) {
696: $noredirect = 1;
697: }
698: }
699: }
700: unless ($noredirect) {
701: my ($newhost,$path);
702: if ($loginvia =~ /:/) {
703: ($newhost,$path) = split(':',$loginvia);
704: } else {
705: $newhost = $loginvia;
706: }
707: if ($newhost ne $lonhost) {
708: if (&Apache::lonnet::hostname($newhost) ne '') {
709: $output = &redirect_page($newhost,$path);
710: }
711: }
712: }
713: }
714: return $output;
715: }
716:
717: sub redirect_page {
718: my ($desthost,$path) = @_;
719: my $protocol = $Apache::lonnet::protocol{$desthost};
720: $protocol = 'http' if ($protocol ne 'https');
721: unless ($path =~ m{^/}) {
722: $path = '/'.$path;
723: }
724: my $url = $protocol.'://'.&Apache::lonnet::hostname($desthost).$path;
725: if ($env{'form.firsturl'} ne '') {
726: $url .='?firsturl='.$env{'form.firsturl'};
727: }
728: my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef,
729: {'redirect' => [0,$url],});
730: my $end_page = &Apache::loncommon::end_page();
731: return $start_page.$end_page;
732: }
733:
734: sub contactdisplay {
735: my ($lt,$servadm,$showadminmail,$authdomain,$helpdeskscript,$showhelpdesk,
736: $possdoms) = @_;
737: my $contactblock;
738: my $origmail;
739: if (ref($possdoms) eq 'ARRAY') {
740: if (grep(/^\Q$authdomain\E$/,@{$possdoms})) {
741: $origmail = $Apache::lonnet::perlvar{'lonSupportEMail'};
742: }
743: }
744: my $requestmail =
745: &Apache::loncommon::build_recipient_list(undef,'helpdeskmail',
746: $authdomain,$origmail);
747: unless ($showhelpdesk eq '0') {
748: if ($requestmail =~ m/[^\@]+\@[^\@]+/) {
749: $showhelpdesk = 1;
750: } else {
751: $showhelpdesk = 0;
752: }
753: }
754: if ($servadm && $showadminmail) {
755: $contactblock .= $$lt{'servadm'}.':<br />'.
756: '<tt>'.$servadm.'</tt><br />';
757: }
758: if ($showhelpdesk) {
759: $contactblock .= '<a href="javascript:helpdesk()">'.$lt->{'helpdesk'}.'</a><br />';
760: my $thisurl = &escape('/adm/login');
761: $$helpdeskscript = <<"ENDSCRIPT";
762: <script type="text/javascript">
763: // <![CDATA[
764: function helpdesk() {
765: var possdom = document.client.udom.value;
766: var codedom = possdom.replace( new RegExp("[^A-Za-z0-9.\\-]","g"),'');
767: if (codedom == '') {
768: codedom = "$authdomain";
769: }
770: var querystr = "origurl=$thisurl&codedom="+codedom;
771: document.location.href = "/adm/helpdesk?"+querystr;
772: return;
773: }
774: // ]]>
775: </script>
776: ENDSCRIPT
777: }
778: return $contactblock;
779: }
780:
781: sub forgotpwdisplay {
782: my (%lt) = @_;
783: my $prompt_for_resetpw = 1;
784: if ($prompt_for_resetpw) {
785: return '<a href="/adm/resetpw">'.$lt{'forgotpw'}.'</a>';
786: }
787: return;
788: }
789:
790: sub coursecatalog_link {
791: my ($linkname) = @_;
792: return <<"END";
793: <a href="/adm/coursecatalog">$linkname</a>
794: END
795: }
796:
797: sub newuser_link {
798: my ($linkname) = @_;
799: return '<a href="/adm/createaccount">'.$linkname.'</a>';
800: }
801:
802: 1;
803: __END__
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