1: # The LearningOnline Network
2: # Login Screen
3: #
4: # $Id: lonlogin.pm,v 1.158.2.3 2015/03/06 22:45:30 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:
42: sub handler {
43: my $r = shift;
44:
45: &Apache::loncommon::get_unprocessed_cgi
46: (join('&',$ENV{'QUERY_STRING'},$env{'request.querystring'},
47: $ENV{'REDIRECT_QUERY_STRING'}),
48: ['interface','username','domain','firsturl','localpath','localres',
49: 'token','role','symb','iptoken']);
50: if (!defined($env{'form.firsturl'})) {
51: &Apache::lonacc::get_posted_cgi($r,['firsturl']);
52: }
53:
54: # -- check if they are a migrating user
55: if (defined($env{'form.token'})) {
56: return &Apache::migrateuser::handler($r);
57: }
58:
59: &Apache::loncommon::no_cache($r);
60: &Apache::lonlocal::get_language_handle($r);
61: &Apache::loncommon::content_type($r,'text/html');
62: $r->send_http_header;
63: return OK if $r->header_only;
64:
65:
66: # Are we re-routing?
67: my $londocroot = $r->dir_config('lonDocRoot');
68: if (-e "$londocroot/lon-status/reroute.txt") {
69: &Apache::lonauth::reroute($r);
70: return OK;
71: }
72:
73: $env{'form.firsturl'} =~ s/(`)/'/g;
74:
75: # -------------------------------- Prevent users from attempting to login twice
76: my $handle = &Apache::lonnet::check_for_valid_session($r);
77: if ($handle ne '') {
78: my $lonidsdir=$r->dir_config('lonIDsDir');
79: if ($handle=~/^publicuser\_/) {
80: # For "public user" - remove it, we apparently really want to login
81: unlink($r->dir_config('lonIDsDir')."/$handle.id");
82: } else {
83: # Indeed, a valid token is found
84: &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
85: my $start_page =
86: &Apache::loncommon::start_page('Already logged in');
87: my $end_page =
88: &Apache::loncommon::end_page();
89: my $dest = '/adm/roles';
90: if ($env{'form.firsturl'} ne '') {
91: $dest = $env{'form.firsturl'};
92: }
93: $r->print(
94: $start_page
95: .'<p class="LC_warning">'.&mt('You are already logged in!').'</p>'
96: .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].',
97: '<a href="'.$dest.'">','</a>','<a href="/adm/logout">','</a>').'</p>'
98: .$end_page
99: );
100: return OK;
101: }
102: }
103:
104: # ---------------------------------------------------- No valid token, continue
105:
106: # ---------------------------- Not possible to really login to domain "public"
107: if ($env{'form.domain'} eq 'public') {
108: $env{'form.domain'}='';
109: $env{'form.username'}='';
110: }
111:
112: # ------ Is this page requested because /adm/migrateuser detected an IP change?
113: my %sessiondata;
114: if ($env{'form.iptoken'}) {
115: %sessiondata = &Apache::lonnet::tmpget($env{'form.iptoken'});
116: unless ($sessiondata{'sessionserver'}) {
117: my $delete = &Apache::lonnet::tmpdel($env{'form.iptoken'});
118: delete($env{'form.iptoken'});
119: }
120: }
121: # ----------------------------------------------------------- Process Interface
122: $env{'form.interface'}=~s/\W//g;
123:
124: (undef,undef,undef,undef,undef,undef,my $clientmobile) =
125: &Apache::loncommon::decode_user_agent();
126:
127: my $iconpath=
128: &Apache::loncommon::lonhttpdurl($r->dir_config('lonIconsURL'));
129:
130: my $lonhost = $r->dir_config('lonHostID');
131: my $domain = &Apache::lonnet::default_login_domain();
132: my $defdom = $domain;
133: if ($lonhost ne '') {
134: unless ($sessiondata{'sessionserver'}) {
135: my $redirect = &check_loginvia($domain,$lonhost);
136: if ($redirect) {
137: $r->print($redirect);
138: return OK;
139: }
140: }
141: }
142:
143: if (($sessiondata{'domain'}) &&
144: (&Apache::lonnet::domain($env{'form.domain'},'description'))) {
145: $domain=$sessiondata{'domain'};
146: } elsif (($env{'form.domain'}) &&
147: (&Apache::lonnet::domain($env{'form.domain'},'description'))) {
148: $domain=$env{'form.domain'};
149: }
150:
151: my $role = $r->dir_config('lonRole');
152: my $loadlim = $r->dir_config('lonLoadLim');
153: my $uloadlim= $r->dir_config('lonUserLoadLim');
154: my $servadm = $r->dir_config('lonAdmEMail');
155: my $tabdir = $r->dir_config('lonTabDir');
156: my $include = $r->dir_config('lonIncludes');
157: my $expire = $r->dir_config('lonExpire');
158: my $version = $r->dir_config('lonVersion');
159: my $host_name = &Apache::lonnet::hostname($lonhost);
160:
161: # --------------------------------------------- Default values for login fields
162:
163: my ($authusername,$authdomain);
164: if ($sessiondata{'username'}) {
165: $authusername=$sessiondata{'username'};
166: } else {
167: $env{'form.username'} = &Apache::loncommon::cleanup_html($env{'form.username'});
168: $authusername=($env{'form.username'}?$env{'form.username'}:'');
169: }
170: if ($sessiondata{'domain'}) {
171: $authdomain=$sessiondata{'domain'};
172: } else {
173: $env{'form.domain'} = &Apache::loncommon::cleanup_html($env{'form.domain'});
174: $authdomain=($env{'form.domain'}?$env{'form.domain'}:$domain);
175: }
176:
177: # ---------------------------------------------------------- Determine own load
178: my $loadavg;
179: {
180: my $loadfile=Apache::File->new('/proc/loadavg');
181: $loadavg=<$loadfile>;
182: }
183: $loadavg =~ s/\s.*//g;
184:
185: my ($loadpercent,$userloadpercent);
186: if ($loadlim) {
187: $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim);
188: }
189: if ($uloadlim) {
190: $userloadpercent=&Apache::lonnet::userload();
191: }
192:
193: my $firsturl=
194: ($env{'request.firsturl'}?$env{'request.firsturl'}:$env{'form.firsturl'});
195:
196: # ----------------------------------------------------------- Get announcements
197: my $announcements=&Apache::lonnet::getannounce();
198: # -------------------------------------------------------- Set login parameters
199:
200: my @hexstr=('0','1','2','3','4','5','6','7',
201: '8','9','a','b','c','d','e','f');
202: my $lkey='';
203: for (0..7) {
204: $lkey.=$hexstr[rand(15)];
205: }
206:
207: my $ukey='';
208: for (0..7) {
209: $ukey.=$hexstr[rand(15)];
210: }
211:
212: my $lextkey=hex($lkey);
213: if ($lextkey>2147483647) { $lextkey-=4294967296; }
214:
215: my $uextkey=hex($ukey);
216: if ($uextkey>2147483647) { $uextkey-=4294967296; }
217:
218: # -------------------------------------------------------- Store away log token
219: my $tokenextras;
220: if ($env{'form.role'}) {
221: $tokenextras = '&role='.&escape($env{'form.role'});
222: }
223: if ($env{'form.symb'}) {
224: if (!$tokenextras) {
225: $tokenextras = '&';
226: }
227: $tokenextras .= '&symb='.&escape($env{'form.symb'});
228: }
229: if ($env{'form.iptoken'}) {
230: if (!$tokenextras) {
231: $tokenextras = '&&';
232: }
233: $tokenextras .= '&iptoken='.&escape($env{'form.iptoken'});
234: }
235: my $logtoken=Apache::lonnet::reply(
236: 'tmpput:'.$ukey.$lkey.'&'.$firsturl.$tokenextras,
237: $lonhost);
238:
239: # -- If we cannot talk to ourselves, or hostID does not map to a hostname
240: # we are in serious trouble
241:
242: if (($logtoken eq 'con_lost') || ($logtoken eq 'no_such_host')) {
243: if ($logtoken eq 'no_such_host') {
244: &Apache::lonnet::logthis('No valid logtoken for log-in page -- unable to determine hostname for hostID: '.$lonhost.'. Check entry in hosts.tab');
245: }
246: my $spares='';
247: my $last;
248: foreach my $hostid (sort
249: {
250: &Apache::lonnet::hostname($a) cmp
251: &Apache::lonnet::hostname($b);
252: }
253: keys(%Apache::lonnet::spareid)) {
254: next if ($hostid eq $lonhost);
255: my $hostname = &Apache::lonnet::hostname($hostid);
256: next if (($last eq $hostname) || ($hostname eq ''));
257: $spares.='<br /><font size="+1"><a href="http://'.
258: $hostname.
259: '/adm/login?domain='.$authdomain.'">'.
260: $hostname.'</a>'.
261: ' '.&mt('(preferred)').'</font>'.$/;
262: $last=$hostname;
263: }
264: if ($spares) {
265: $spares.= '<br />';
266: }
267: my %all_hostnames = &Apache::lonnet::all_hostnames();
268: foreach my $hostid (sort
269: {
270: &Apache::lonnet::hostname($a) cmp
271: &Apache::lonnet::hostname($b);
272: }
273: keys(%all_hostnames)) {
274: next if ($hostid eq $lonhost || $Apache::lonnet::spareid{$hostid});
275: my $hostname = &Apache::lonnet::hostname($hostid);
276: next if (($last eq $hostname) || ($hostname eq ''));
277: $spares.='<br /><a href="http://'.
278: $hostname.
279: '/adm/login?domain='.$authdomain.'">'.
280: $hostname.'</a>';
281: $last=$hostname;
282: }
283: $r->print(
284: '<html>'
285: .'<head><title>'
286: .&mt('The LearningOnline Network with CAPA')
287: .'</title></head>'
288: .'<body bgcolor="#FFFFFF">'
289: .'<h1>'.&mt('The LearningOnline Network with CAPA').'</h1>'
290: .'<img src="/adm/lonKaputt/lonlogo_broken.gif" align="right" />'
291: .'<h3>'.&mt('This LON-CAPA server is temporarily not available for login.').'</h3>');
292: if ($spares) {
293: $r->print('<p>'.&mt('Please attempt to login to one of the following servers:')
294: .'</p>'
295: .$spares);
296: }
297: $r->print('</body>'
298: .'</html>'
299: );
300: return OK;
301: }
302:
303: # ----------------------------------------------- Apparently we are in business
304: $servadm=~s/\,/\<br \/\>/g;
305:
306: # ----------------------------------------------------------- Front page design
307: my $pgbg=&Apache::loncommon::designparm('login.pgbg',$domain);
308: my $font=&Apache::loncommon::designparm('login.font',$domain);
309: my $link=&Apache::loncommon::designparm('login.link',$domain);
310: my $vlink=&Apache::loncommon::designparm('login.vlink',$domain);
311: my $alink=&Apache::loncommon::designparm('login.alink',$domain);
312: my $mainbg=&Apache::loncommon::designparm('login.mainbg',$domain);
313: my $loginbox_bg=&Apache::loncommon::designparm('login.sidebg',$domain);
314: my $loginbox_header_bgcol=&Apache::loncommon::designparm('login.bgcol',$domain);
315: my $loginbox_header_textcol=&Apache::loncommon::designparm('login.textcol',$domain);
316: my $logo=&Apache::loncommon::designparm('login.logo',$domain);
317: my $img=&Apache::loncommon::designparm('login.img',$domain);
318: my $domainlogo=&Apache::loncommon::domainlogo($domain);
319: my $showbanner = 1;
320: my $showmainlogo = 1;
321: if (defined(&Apache::loncommon::designparm('login.showlogo_img',$domain))) {
322: $showbanner = &Apache::loncommon::designparm('login.showlogo_img',$domain);
323: }
324: if (defined(&Apache::loncommon::designparm('login.showlogo_logo',$domain))) {
325: $showmainlogo = &Apache::loncommon::designparm('login.showlogo_logo',$domain);
326: }
327: my $showadminmail;
328: my @possdoms = &Apache::lonnet::current_machine_domains();
329: if (grep(/^\Q$domain\E$/,@possdoms)) {
330: $showadminmail=&Apache::loncommon::designparm('login.adminmail',$domain);
331: }
332: my $showcoursecat =
333: &Apache::loncommon::designparm('login.coursecatalog',$domain);
334: my $shownewuserlink =
335: &Apache::loncommon::designparm('login.newuser',$domain);
336: my $showhelpdesk =
337: &Apache::loncommon::designparm('login.helpdesk',$domain);
338: my $now=time;
339: my $js = (<<ENDSCRIPT);
340:
341: <script type="text/javascript" language="JavaScript">
342: // <![CDATA[
343: function send()
344: {
345: this.document.server.elements.uname.value
346: =this.document.client.elements.uname.value;
347:
348: this.document.server.elements.udom.value
349: =this.document.client.elements.udom.value;
350:
351: uextkey=this.document.client.elements.uextkey.value;
352: lextkey=this.document.client.elements.lextkey.value;
353: initkeys();
354:
355: this.document.server.elements.upass0.value
356: =crypted(this.document.client.elements.upass$now.value.substr(0,15));
357: this.document.server.elements.upass1.value
358: =crypted(this.document.client.elements.upass$now.value.substr(15,15));
359: this.document.server.elements.upass2.value
360: =crypted(this.document.client.elements.upass$now.value.substr(30,15));
361:
362: this.document.client.elements.uname.value='';
363: this.document.client.elements.upass$now.value='';
364:
365: this.document.server.submit();
366: return false;
367: }
368:
369: function enableInput() {
370: this.document.client.elements.upass$now.removeAttribute("readOnly");
371: this.document.client.elements.uname.removeAttribute("readOnly");
372: this.document.client.elements.udom.removeAttribute("readOnly");
373: return;
374: }
375:
376: // ]]>
377: </script>
378:
379: ENDSCRIPT
380:
381: # --------------------------------------------------- Print login screen header
382:
383: my %add_entries = (
384: bgcolor => "$mainbg",
385: text => "$font",
386: link => "$link",
387: vlink => "$vlink",
388: alink => "$alink",
389: onload => 'javascript:enableInput();',);
390:
391: my %defaultdomconf = &Apache::loncommon::get_domainconf($defdom);
392: my $headextra = $defaultdomconf{$defdom.'.login.headtag_'.$lonhost};
393: my $headextra_exempt = $defaultdomconf{$domain.'.login.headtag_exempt_'.$lonhost};
394: if ($headextra) {
395: my $omitextra;
396: if ($headextra_exempt ne '') {
397: my @exempt = split(',',$headextra_exempt);
398: my $ip = $ENV{'REMOTE_ADDR'};
399: if (grep(/^\Q$ip\E$/,@exempt)) {
400: $omitextra = 1;
401: }
402: }
403: unless ($omitextra) {
404: my $confname = $defdom.'-domainconfig';
405: if ($headextra =~ m{^\Q/res/$defdom/$confname/login/headtag/$lonhost/\E}) {
406: my $extra = &Apache::lonnet::getfile(&Apache::lonnet::filelocation("",$headextra));
407: unless ($extra eq '-1') {
408: $js .= "\n".$extra."\n";
409: }
410: }
411: }
412: }
413:
414: $r->print(&Apache::loncommon::start_page('The LearningOnline Network with CAPA Login',$js,
415: { 'redirect' => [$expire,'/adm/roles'],
416: 'add_entries' => \%add_entries,
417: 'only_body' => 1,}));
418:
419: # ----------------------------------------------------------------------- Texts
420:
421: my %lt=&Apache::lonlocal::texthash(
422: 'un' => 'Username',
423: 'pw' => 'Password',
424: 'dom' => 'Domain',
425: 'perc' => 'percent',
426: 'load' => 'Server Load',
427: 'userload' => 'User Load',
428: 'catalog' => 'Course/Community Catalog',
429: 'log' => 'Log in',
430: 'help' => 'Log-in Help',
431: 'serv' => 'Server',
432: 'servadm' => 'Server Administration',
433: 'helpdesk' => 'Contact Helpdesk',
434: 'forgotpw' => 'Forgot password?',
435: 'newuser' => 'New User?',
436: );
437: # -------------------------------------------------- Change password field name
438:
439: my $forgotpw = &forgotpwdisplay(%lt);
440: $forgotpw .= '<br />' if $forgotpw;
441: my $loginhelp = &Apache::lonauth::loginhelpdisplay($authdomain);
442: if ($loginhelp) {
443: $loginhelp = '<a href="'.$loginhelp.'">'.$lt{'help'}.'</a><br />';
444: }
445:
446: # ---------------------------------------------------- Serve out DES JavaScript
447: {
448: my $jsh=Apache::File->new($include."/londes.js");
449: $r->print(<$jsh>);
450: }
451: # ---------------------------------------------------------- Serve rest of page
452:
453: $r->print(
454: '<div class="LC_Box"'
455: .' style="margin:0 auto; padding:10px; width:90%; height: auto; background-color:#FFFFFF;">'
456: );
457:
458: $r->print(<<ENDSERVERFORM);
459: <form name="server" action="/adm/authenticate" method="post" target="_top">
460: <input type="hidden" name="logtoken" value="$logtoken" />
461: <input type="hidden" name="serverid" value="$lonhost" />
462: <input type="hidden" name="uname" value="" />
463: <input type="hidden" name="upass0" value="" />
464: <input type="hidden" name="upass1" value="" />
465: <input type="hidden" name="upass2" value="" />
466: <input type="hidden" name="udom" value="" />
467: <input type="hidden" name="localpath" value="$env{'form.localpath'}" />
468: <input type="hidden" name="localres" value="$env{'form.localres'}" />
469: </form>
470: ENDSERVERFORM
471: my $coursecatalog;
472: if (($showcoursecat eq '') || ($showcoursecat)) {
473: $coursecatalog = &coursecatalog_link($lt{'catalog'}).'<br />';
474: }
475: my $newuserlink;
476: if ($shownewuserlink) {
477: $newuserlink = &newuser_link($lt{'newuser'}).'<br />';
478: }
479: my $logintitle =
480: '<h2 class="LC_hcell"'
481: .' style="background:'.$loginbox_header_bgcol.';'
482: .' color:'.$loginbox_header_textcol.'">'
483: .$lt{'log'}
484: .'</h2>';
485:
486: my $noscript_warning='<noscript><span class="LC_warning"><b>'
487: .&mt('Use of LON-CAPA requires Javascript to be enabled in your web browser.')
488: .'</b></span></noscript>';
489: my $helpdeskscript;
490: my $contactblock = &contactdisplay(\%lt,$servadm,$showadminmail,
491: $authdomain,\$helpdeskscript,
492: $showhelpdesk,\@possdoms);
493:
494: my $mobileargs;
495: if ($clientmobile) {
496: $mobileargs = 'autocapitalize="off" autocorrect="off"';
497: }
498: my $loginform=(<<LFORM);
499: <form name="client" action="" onsubmit="return(send())">
500: <input type="hidden" name="lextkey" value="$lextkey" />
501: <input type="hidden" name="uextkey" value="$uextkey" />
502: <b><label for="uname">$lt{'un'}</label>:</b><br />
503: <input type="text" name="uname" id="uname" size="15" value="$authusername" readonly="readonly" $mobileargs /><br />
504: <b><label for="upass$now">$lt{'pw'}</label>:</b><br />
505: <input type="password" name="upass$now" id="upass$now" size="15" readonly="readonly" /><br />
506: <b><label for="udom">$lt{'dom'}</label>:</b><br />
507: <input type="text" name="udom" id="udom" size="15" value="$authdomain" readonly="readonly" $mobileargs /><br />
508: <input type="submit" value="$lt{'log'}" />
509: </form>
510: LFORM
511:
512: if ($showbanner) {
513: $r->print(<<HEADER);
514: <!-- The LON-CAPA Header -->
515: <div style="background:$pgbg;margin:0;width:100%;">
516: <img src="$img" border="0" alt="The Learning Online Network with CAPA" />
517: </div>
518: HEADER
519: }
520: $r->print(<<ENDTOP);
521: <div style="float:left;margin-top:0;">
522: <div class="LC_Box" style="background:$loginbox_bg;">
523: $logintitle
524: $loginform
525: $noscript_warning
526: </div>
527:
528: <div class="LC_Box" style="padding-top: 10px;">
529: $loginhelp
530: $forgotpw
531: $contactblock
532: $newuserlink
533: $coursecatalog
534: </div>
535: </div>
536:
537: <div>
538: ENDTOP
539: if ($showmainlogo) {
540: $r->print(' <img src="'.$logo.'" alt="" />'."\n");
541: }
542: $r->print(<<ENDTOP);
543: $announcements
544: </div>
545: <hr style="clear:both;" />
546: ENDTOP
547: my ($domainrow,$serverrow,$loadrow,$userloadrow,$versionrow);
548: $domainrow = <<"END";
549: <tr>
550: <td align="left" valign="top">
551: <small><b>$lt{'dom'}: </b></small>
552: </td>
553: <td align="left" valign="top">
554: <small><tt> $domain</tt></small>
555: </td>
556: </tr>
557: END
558: $serverrow = <<"END";
559: <tr>
560: <td align="left" valign="top">
561: <small><b>$lt{'serv'}: </b></small>
562: </td>
563: <td align="left" valign="top">
564: <small><tt> $lonhost ($role)</tt></small>
565: </td>
566: </tr>
567: END
568: if ($loadlim) {
569: $loadrow = <<"END";
570: <tr>
571: <td align="left" valign="top">
572: <small><b>$lt{'load'}: </b></small>
573: </td>
574: <td align="left" valign="top">
575: <small><tt> $loadpercent $lt{'perc'}</tt></small>
576: </td>
577: </tr>
578: END
579: }
580: if ($uloadlim) {
581: $userloadrow = <<"END";
582: <tr>
583: <td align="left" valign="top">
584: <small><b>$lt{'userload'}: </b></small>
585: </td>
586: <td align="left" valign="top">
587: <small><tt> $userloadpercent $lt{'perc'}</tt></small>
588: </td>
589: </tr>
590: END
591: }
592: if (($version ne '') && ($version ne '<!-- VERSION -->')) {
593: $versionrow = <<"END";
594: <tr>
595: <td colspan="2" align="left">
596: <small>$version</small>
597: </td>
598: </tr>
599: END
600: }
601:
602: $r->print(<<ENDDOCUMENT);
603: <div style="float: left;">
604: <table border="0" cellspacing="0" cellpadding="0">
605: $domainrow
606: $serverrow
607: $loadrow
608: $userloadrow
609: $versionrow
610: </table>
611: </div>
612: <div style="float: right;">
613: $domainlogo
614: </div>
615: <br style="clear:both;" />
616: </div>
617:
618: <script type="text/javascript">
619: // <![CDATA[
620: // the if prevents the script error if the browser can not handle this
621: if ( document.client.uname ) { document.client.uname.focus(); }
622: // ]]>
623: </script>
624: $helpdeskscript
625:
626: ENDDOCUMENT
627: my %endargs = ( 'noredirectlink' => 1, );
628: $r->print(&Apache::loncommon::end_page(\%endargs));
629: return OK;
630: }
631:
632: sub check_loginvia {
633: my ($domain,$lonhost) = @_;
634: if ($domain eq '' || $lonhost eq '') {
635: return;
636: }
637: my %domconfhash = &Apache::loncommon::get_domainconf($domain);
638: my $loginvia = $domconfhash{$domain.'.login.loginvia_'.$lonhost};
639: my $loginvia_exempt = $domconfhash{$domain.'.login.loginvia_exempt_'.$lonhost};
640: my $output;
641: if ($loginvia ne '') {
642: my $noredirect;
643: my $ip = $ENV{'REMOTE_ADDR'};
644: if ($ip eq '127.0.0.1') {
645: $noredirect = 1;
646: } else {
647: if ($loginvia_exempt ne '') {
648: my @exempt = split(',',$loginvia_exempt);
649: if (grep(/^\Q$ip\E$/,@exempt)) {
650: $noredirect = 1;
651: }
652: }
653: }
654: unless ($noredirect) {
655: my ($newhost,$path);
656: if ($loginvia =~ /:/) {
657: ($newhost,$path) = split(':',$loginvia);
658: } else {
659: $newhost = $loginvia;
660: }
661: if ($newhost ne $lonhost) {
662: if (&Apache::lonnet::hostname($newhost) ne '') {
663: $output = &redirect_page($newhost,$path);
664: }
665: }
666: }
667: }
668: return $output;
669: }
670:
671: sub redirect_page {
672: my ($desthost,$path) = @_;
673: my $protocol = $Apache::lonnet::protocol{$desthost};
674: $protocol = 'http' if ($protocol ne 'https');
675: unless ($path =~ m{^/}) {
676: $path = '/'.$path;
677: }
678: my $url = $protocol.'://'.&Apache::lonnet::hostname($desthost).$path;
679: if ($env{'form.firsturl'} ne '') {
680: $url .='?firsturl='.$env{'form.firsturl'};
681: }
682: my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef,
683: {'redirect' => [0,$url],});
684: my $end_page = &Apache::loncommon::end_page();
685: return $start_page.$end_page;
686: }
687:
688: sub contactdisplay {
689: my ($lt,$servadm,$showadminmail,$authdomain,$helpdeskscript,$showhelpdesk,
690: $possdoms) = @_;
691: my $contactblock;
692: my $origmail;
693: if (ref($possdoms) eq 'ARRAY') {
694: if (grep(/^\Q$authdomain\E$/,@{$possdoms})) {
695: $origmail = $Apache::lonnet::perlvar{'lonSupportEMail'};
696: }
697: }
698: my $requestmail =
699: &Apache::loncommon::build_recipient_list(undef,'helpdeskmail',
700: $authdomain,$origmail);
701: unless ($showhelpdesk eq '0') {
702: if ($requestmail =~ m/[^\@]+\@[^\@]+/) {
703: $showhelpdesk = 1;
704: } else {
705: $showhelpdesk = 0;
706: }
707: }
708: if ($servadm && $showadminmail) {
709: $contactblock .= $$lt{'servadm'}.':<br />'.
710: '<tt>'.$servadm.'</tt><br />';
711: }
712: if ($showhelpdesk) {
713: $contactblock .= '<a href="javascript:helpdesk()">'.$lt->{'helpdesk'}.'</a><br />';
714: my $thisurl = &escape('/adm/login');
715: $$helpdeskscript = <<"ENDSCRIPT";
716: <script type="text/javascript">
717: // <![CDATA[
718: function helpdesk() {
719: var possdom = document.client.udom.value;
720: var codedom = possdom.replace( new RegExp("[^A-Za-z0-9.\\-]","g"),'');
721: if (codedom == '') {
722: codedom = "$authdomain";
723: }
724: var querystr = "origurl=$thisurl&codedom="+codedom;
725: document.location.href = "/adm/helpdesk?"+querystr;
726: return;
727: }
728: // ]]>
729: </script>
730: ENDSCRIPT
731: }
732: return $contactblock;
733: }
734:
735: sub forgotpwdisplay {
736: my (%lt) = @_;
737: my $prompt_for_resetpw = 1;
738: if ($prompt_for_resetpw) {
739: return '<a href="/adm/resetpw">'.$lt{'forgotpw'}.'</a>';
740: }
741: return;
742: }
743:
744: sub coursecatalog_link {
745: my ($linkname) = @_;
746: return <<"END";
747: <a href="/adm/coursecatalog">$linkname</a>
748: END
749: }
750:
751: sub newuser_link {
752: my ($linkname) = @_;
753: return '<a href="/adm/createaccount">'.$linkname.'</a>';
754: }
755:
756: 1;
757: __END__
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