Annotation of loncom/auth/lonlogin.pm, revision 1.183
1.160 kruse 1: # The LearningOnline Network
2: # Login Screen
3: #
1.183 ! raeburn 4: # $Id: lonlogin.pm,v 1.182 2020/12/18 15:23:03 raeburn Exp $
1.160 kruse 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/';
1.176 raeburn 40: use LONCAPA qw(:DEFAULT :match);
1.169 raeburn 41: use CGI::Cookie();
1.160 kruse 42:
43: sub handler {
44: my $r = shift;
45:
46: &Apache::loncommon::get_unprocessed_cgi
47: (join('&',$ENV{'QUERY_STRING'},$env{'request.querystring'},
48: $ENV{'REDIRECT_QUERY_STRING'}),
49: ['interface','username','domain','firsturl','localpath','localres',
1.179 raeburn 50: 'token','role','symb','iptoken','btoken','ltoken','linkkey']);
1.160 kruse 51: if (!defined($env{'form.firsturl'})) {
52: &Apache::lonacc::get_posted_cgi($r,['firsturl']);
53: }
1.172 raeburn 54: if (!defined($env{'form.firsturl'})) {
55: if ($ENV{'REDIRECT_URL'} =~ m{^/+tiny/+$LONCAPA::match_domain/+\w+$}) {
56: $env{'form.firsturl'} = $ENV{'REDIRECT_URL'};
57: }
58: }
1.179 raeburn 59: if (($env{'form.firsturl'} =~ m{^/+tiny/+$LONCAPA::match_domain/+\w+$}) &&
60: (!$env{'form.ltoken'}) && (!$env{'form.linkkey'})) {
61: &Apache::lonacc::get_posted_cgi($r,['linkkey']);
62: }
1.160 kruse 63:
64: # -- check if they are a migrating user
65: if (defined($env{'form.token'})) {
66: return &Apache::migrateuser::handler($r);
67: }
68:
1.169 raeburn 69: # For "public user" - remove any exising "public" cookie, as user really wants to log-in
1.171 raeburn 70: my ($handle,$lonidsdir,$expirepub,$userdom);
1.176 raeburn 71: $lonidsdir=$r->dir_config('lonIDsDir');
1.169 raeburn 72: unless ($r->header_only) {
1.171 raeburn 73: $handle = &Apache::lonnet::check_for_valid_session($r,'lonID',undef,\$userdom);
1.169 raeburn 74: if ($handle ne '') {
75: if ($handle=~/^publicuser\_/) {
76: unlink($r->dir_config('lonIDsDir')."/$handle.id");
77: undef($handle);
1.171 raeburn 78: undef($userdom);
79: $expirepub = 1;
1.169 raeburn 80: }
81: }
82: }
83:
1.160 kruse 84: &Apache::loncommon::no_cache($r);
85: &Apache::lonlocal::get_language_handle($r);
86: &Apache::loncommon::content_type($r,'text/html');
1.171 raeburn 87: if ($expirepub) {
1.170 raeburn 88: my $c = new CGI::Cookie(-name => 'lonPubID',
1.169 raeburn 89: -value => '',
90: -expires => '-10y',);
91: $r->header_out('Set-cookie' => $c);
1.171 raeburn 92: } elsif (($handle eq '') && ($userdom ne '')) {
1.173 raeburn 93: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
94: foreach my $name (keys(%cookies)) {
95: next unless ($name =~ /^lon(|S|Link|Pub)ID$/);
96: my $c = new CGI::Cookie(-name => $name,
97: -value => '',
98: -expires => '-10y',);
99: $r->headers_out->add('Set-cookie' => $c);
100: }
1.169 raeburn 101: }
1.160 kruse 102: $r->send_http_header;
103: return OK if $r->header_only;
104:
105:
106: # Are we re-routing?
107: my $londocroot = $r->dir_config('lonDocRoot');
108: if (-e "$londocroot/lon-status/reroute.txt") {
109: &Apache::lonauth::reroute($r);
110: return OK;
111: }
112:
1.176 raeburn 113: my $lonhost = $r->dir_config('lonHostID');
1.174 raeburn 114: $env{'form.firsturl'} =~ s/(`)/'/g;
115:
116: # Check if browser sent a LON-CAPA load balancer cookie (and this is a balancer)
117:
118: my ($found_server,$balancer_cookie) = &Apache::lonnet::check_for_balancer_cookie($r,1);
119: if ($found_server) {
120: my $hostname = &Apache::lonnet::hostname($found_server);
121: if ($hostname ne '') {
122: my $protocol = $Apache::lonnet::protocol{$found_server};
123: $protocol = 'http' if ($protocol ne 'https');
124: my $dest = '/adm/roles';
125: if ($env{'form.firsturl'} ne '') {
126: $dest = $env{'form.firsturl'};
127: }
1.176 raeburn 128: my %info = (
129: balcookie => $lonhost.':'.$balancer_cookie,
130: );
1.177 raeburn 131: if ($env{'form.ltoken'}) {
132: my %link_info = &Apache::lonnet::tmpget($env{'form.ltoken'});
133: if ($link_info{'linkprot'}) {
134: $info{'linkprot'} = $link_info{'linkprot'};
135: }
136: &Apache::lonnet::tmpdel($env{'form.ltoken'});
137: delete($env{'form.ltoken'});
1.179 raeburn 138: } elsif ($env{'form.linkkey'}) {
139: $info{'linkkey'} = $env{'form.linkkey'};
140: delete($env{'form.linkkey'});
1.177 raeburn 141: }
1.176 raeburn 142: my $balancer_token = &Apache::lonnet::tmpput(\%info,$found_server);
143: if ($balancer_token) {
144: $dest .= (($dest=~/\?/)?'&;':'?') . 'btoken='.$balancer_token;
145: }
1.183 ! raeburn 146: unless ($found_server eq $lonhost) {
! 147: my $alias = &Apache::lonnet::use_proxy_alias($r,$found_server);
! 148: $hostname = $alias if ($alias ne '');
! 149: }
1.174 raeburn 150: my $url = $protocol.'://'.$hostname.$dest;
151: my $start_page =
152: &Apache::loncommon::start_page('Switching Server ...',undef,
153: {'redirect' => [0,$url],});
154: my $end_page = &Apache::loncommon::end_page();
155: $r->print($start_page.$end_page);
156: return OK;
157: }
158: }
159:
1.171 raeburn 160: #
1.176 raeburn 161: # Check if a LON-CAPA load balancer sent user here because user's browser sent
162: # it a balancer cookie for an active session on this server.
163: #
164:
1.179 raeburn 165: my ($balcookie,$linkprot,$linkkey);
1.176 raeburn 166: if ($env{'form.btoken'}) {
167: my %info = &Apache::lonnet::tmpget($env{'form.btoken'});
168: $balcookie = $info{'balcookie'};
1.177 raeburn 169: if ($balcookie) {
170: if ($info{'linkprot'}) {
171: $linkprot = $info{'linkprot'};
1.179 raeburn 172: } elsif ($info{'linkkey'}) {
173: $linkkey = $info{'linkkey'};
1.177 raeburn 174: }
175: }
1.176 raeburn 176: &Apache::lonnet::tmpdel($env{'form.btoken'});
177: delete($env{'form.btoken'});
178: }
179:
180: #
1.171 raeburn 181: # If browser sent an old cookie for which the session file had been removed
182: # check if configuration for user's domain has a portal URL set. If so
183: # switch user's log-in to the portal.
184: #
185:
186: if (($handle eq '') && ($userdom ne '')) {
187: my %domdefaults = &Apache::lonnet::get_domain_defaults($userdom);
188: if ($domdefaults{'portal_def'} =~ /^https?\:/) {
189: my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef,
190: {'redirect' => [0,$domdefaults{'portal_def'}],});
191: my $end_page = &Apache::loncommon::end_page();
192: $r->print($start_page.$end_page);
193: return OK;
194: }
195: }
196:
1.160 kruse 197: # -------------------------------- Prevent users from attempting to login twice
198: if ($handle ne '') {
1.169 raeburn 199: &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
200: my $start_page =
201: &Apache::loncommon::start_page('Already logged in');
202: my $end_page =
203: &Apache::loncommon::end_page();
204: my $dest = '/adm/roles';
205: if ($env{'form.firsturl'} ne '') {
1.176 raeburn 206: $dest = $env{'form.firsturl'};
1.169 raeburn 207: }
1.177 raeburn 208: if (($env{'form.ltoken'}) || ($linkprot)) {
209: unless ($linkprot) {
210: my %info = &Apache::lonnet::tmpget($env{'form.ltoken'});
211: $linkprot = $info{'linkprot'};
212: my $delete = &Apache::lonnet::tmpdel($env{'form.ltoken'});
213: delete($env{'form.ltoken'});
214: }
215: if ($linkprot) {
216: my ($linkprotector,$deeplink) = split(/:/,$linkprot,2);
217: if ($env{'user.linkprotector'}) {
218: my @protectors = split(/,/,$env{'user.linkprotector'});
219: unless (grep(/^\Q$linkprotector\E$/,@protectors)) {
220: push(@protectors,$linkprotector);
221: @protectors = sort { $a <=> $b } @protectors;
222: &Apache::lonnet::appenv({'user.linkprotector' => join(',',@protectors)});
223: }
224: } else {
225: &Apache::lonnet::appenv({'user.linkprotector' => $linkprotector });
226: }
227: if ($env{'user.linkproturi'}) {
228: my @proturis = split(/,/,$env{'user.linkproturi'});
1.179 raeburn 229: unless (grep(/^\Q$deeplink\E$/,@proturis)) {
1.177 raeburn 230: push(@proturis,$deeplink);
231: @proturis = sort @proturis;
232: &Apache::lonnet::appenv({'user.linkproturi' => join(',',@proturis)});
233: }
234: } else {
235: &Apache::lonnet::appenv({'user.linkproturi' => $deeplink});
236: }
237: }
1.179 raeburn 238: } elsif (($env{'form.linkkey'}) || ($linkkey)) {
239: if ($env{'form.firsturl'} =~ m{^/tiny/$match_domain/\w+$}) {
240: if ($linkkey eq '') {
241: $linkkey = $env{'form.linkkey'};
242: }
243: if ($env{'user.deeplinkkey'}) {
244: my @linkkeys = split(/,/,$env{'user.deeplinkkey'});
245: unless (grep(/^\Q$linkkey\E$/,@linkkeys)) {
246: push(@linkkeys,$linkkey);
247: &Apache::lonnet::appenv({'user.deeplinkkey' => join(',',sort(@linkkeys))});
248: }
249: } else {
250: &Apache::lonnet::appenv({'user.deeplinkkey' => $linkkey});
251: }
252: my $deeplink = $env{'form.firsturl'};
253: if ($env{'user.keyedlinkuri'}) {
254: my @keyeduris = split(/,/,$env{'user.keyedlinkuri'});
255: unless (grep(/^\Q$deeplink\E$/,@keyeduris)) {
256: push(@keyeduris,$deeplink);
257: &Apache::lonnet::appenv({'user.keyedlinkuri' => join(',',sort(@keyeduris))});
258: }
259: } else {
260: &Apache::lonnet::appenv({'user.keyedlinkuri' => $deeplink});
261: }
262: }
1.177 raeburn 263: }
1.169 raeburn 264: $r->print(
1.160 kruse 265: $start_page
266: .'<p class="LC_warning">'.&mt('You are already logged in!').'</p>'
267: .'<p>'.&mt('Please either [_1]continue the current session[_2] or [_3]log out[_4].',
268: '<a href="'.$dest.'">','</a>','<a href="/adm/logout">','</a>').'</p>'
269: .$end_page
270: );
1.169 raeburn 271: return OK;
1.160 kruse 272: }
273:
274: # ---------------------------------------------------- No valid token, continue
275:
276: # ---------------------------- Not possible to really login to domain "public"
277: if ($env{'form.domain'} eq 'public') {
278: $env{'form.domain'}='';
279: $env{'form.username'}='';
280: }
281:
282: # ------ Is this page requested because /adm/migrateuser detected an IP change?
283: my %sessiondata;
284: if ($env{'form.iptoken'}) {
285: %sessiondata = &Apache::lonnet::tmpget($env{'form.iptoken'});
1.162 raeburn 286: unless ($sessiondata{'sessionserver'}) {
287: my $delete = &Apache::lonnet::tmpdel($env{'form.iptoken'});
288: delete($env{'form.iptoken'});
289: }
1.160 kruse 290: }
291: # ----------------------------------------------------------- Process Interface
292: $env{'form.interface'}=~s/\W//g;
293:
294: (undef,undef,undef,undef,undef,undef,my $clientmobile) =
295: &Apache::loncommon::decode_user_agent();
296:
297: my $iconpath=
298: &Apache::loncommon::lonhttpdurl($r->dir_config('lonIconsURL'));
299:
300: my $domain = &Apache::lonnet::default_login_domain();
1.161 raeburn 301: my $defdom = $domain;
1.160 kruse 302: if ($lonhost ne '') {
303: unless ($sessiondata{'sessionserver'}) {
1.177 raeburn 304: my $redirect = &check_loginvia($domain,$lonhost,$lonidsdir,$balcookie,$linkprot);
1.160 kruse 305: if ($redirect) {
306: $r->print($redirect);
307: return OK;
308: }
309: }
310: }
311:
312: if (($sessiondata{'domain'}) &&
1.175 raeburn 313: (&Apache::lonnet::domain($sessiondata{'domain'},'description'))) {
1.160 kruse 314: $domain=$sessiondata{'domain'};
315: } elsif (($env{'form.domain'}) &&
316: (&Apache::lonnet::domain($env{'form.domain'},'description'))) {
317: $domain=$env{'form.domain'};
318: }
319:
320: my $role = $r->dir_config('lonRole');
321: my $loadlim = $r->dir_config('lonLoadLim');
322: my $uloadlim= $r->dir_config('lonUserLoadLim');
323: my $servadm = $r->dir_config('lonAdmEMail');
324: my $tabdir = $r->dir_config('lonTabDir');
325: my $include = $r->dir_config('lonIncludes');
326: my $expire = $r->dir_config('lonExpire');
327: my $version = $r->dir_config('lonVersion');
328: my $host_name = &Apache::lonnet::hostname($lonhost);
329:
330: # --------------------------------------------- Default values for login fields
331:
332: my ($authusername,$authdomain);
333: if ($sessiondata{'username'}) {
334: $authusername=$sessiondata{'username'};
335: } else {
336: $env{'form.username'} = &Apache::loncommon::cleanup_html($env{'form.username'});
337: $authusername=($env{'form.username'}?$env{'form.username'}:'');
338: }
339: if ($sessiondata{'domain'}) {
340: $authdomain=$sessiondata{'domain'};
341: } else {
342: $env{'form.domain'} = &Apache::loncommon::cleanup_html($env{'form.domain'});
343: $authdomain=($env{'form.domain'}?$env{'form.domain'}:$domain);
344: }
345:
346: # ---------------------------------------------------------- Determine own load
347: my $loadavg;
348: {
349: my $loadfile=Apache::File->new('/proc/loadavg');
350: $loadavg=<$loadfile>;
351: }
352: $loadavg =~ s/\s.*//g;
353:
354: my ($loadpercent,$userloadpercent);
355: if ($loadlim) {
356: $loadpercent=sprintf("%.1f",100*$loadavg/$loadlim);
357: }
358: if ($uloadlim) {
359: $userloadpercent=&Apache::lonnet::userload();
360: }
361:
362: my $firsturl=
363: ($env{'request.firsturl'}?$env{'request.firsturl'}:$env{'form.firsturl'});
364:
365: # ----------------------------------------------------------- Get announcements
366: my $announcements=&Apache::lonnet::getannounce();
367: # -------------------------------------------------------- Set login parameters
368:
369: my @hexstr=('0','1','2','3','4','5','6','7',
370: '8','9','a','b','c','d','e','f');
371: my $lkey='';
372: for (0..7) {
373: $lkey.=$hexstr[rand(15)];
374: }
375:
376: my $ukey='';
377: for (0..7) {
378: $ukey.=$hexstr[rand(15)];
379: }
380:
381: my $lextkey=hex($lkey);
382: if ($lextkey>2147483647) { $lextkey-=4294967296; }
383:
384: my $uextkey=hex($ukey);
385: if ($uextkey>2147483647) { $uextkey-=4294967296; }
386:
387: # -------------------------------------------------------- Store away log token
388: my $tokenextras;
389: if ($env{'form.role'}) {
390: $tokenextras = '&role='.&escape($env{'form.role'});
391: }
392: if ($env{'form.symb'}) {
393: if (!$tokenextras) {
394: $tokenextras = '&';
395: }
396: $tokenextras .= '&symb='.&escape($env{'form.symb'});
397: }
1.162 raeburn 398: if ($env{'form.iptoken'}) {
399: if (!$tokenextras) {
400: $tokenextras = '&&';
401: }
402: $tokenextras .= '&iptoken='.&escape($env{'form.iptoken'});
403: }
1.177 raeburn 404: if ($env{'form.ltoken'}) {
405: my %info = &Apache::lonnet::tmpget($env{'form.ltoken'});
406: &Apache::lonnet::tmpdel($env{'form.ltoken'});
407: delete($env{'form.ltoken'});
408: if ($info{'linkprot'}) {
409: if (!$tokenextras) {
410: $tokenextras = '&&&';
411: }
412: $tokenextras .= '&linkprot='.&escape($info{'linkprot'});
413: }
1.179 raeburn 414: } elsif ($env{'form.linkkey'}) {
415: if (!$tokenextras) {
416: $tokenextras = '&&&';
417: }
418: $tokenextras .= '&linkkey='.&escape($env{'form.linkkey'});
1.177 raeburn 419: }
1.160 kruse 420: my $logtoken=Apache::lonnet::reply(
421: 'tmpput:'.$ukey.$lkey.'&'.$firsturl.$tokenextras,
422: $lonhost);
423:
424: # -- If we cannot talk to ourselves, or hostID does not map to a hostname
425: # we are in serious trouble
426:
427: if (($logtoken eq 'con_lost') || ($logtoken eq 'no_such_host')) {
428: if ($logtoken eq 'no_such_host') {
429: &Apache::lonnet::logthis('No valid logtoken for log-in page -- unable to determine hostname for hostID: '.$lonhost.'. Check entry in hosts.tab');
430: }
431: my $spares='';
1.180 raeburn 432: my (@sparehosts,%spareservers);
433: my $sparesref = &Apache::lonnet::this_host_spares($defdom);
434: if (ref($sparesref) eq 'HASH') {
435: foreach my $key (keys(%{$sparesref})) {
436: if (ref($sparesref->{$key}) eq 'ARRAY') {
437: my @sorted = sort { &Apache::lonnet::hostname($a) cmp
438: &Apache::lonnet::hostname($b);
439: } @{$sparesref->{$key}};
440: if (@sorted) {
441: if ($key eq 'primary') {
442: unshift(@sparehosts,@sorted);
443: } elsif ($key eq 'default') {
444: push(@sparehosts,@sorted);
445: }
446: }
447: }
448: }
449: }
450: foreach my $hostid (@sparehosts) {
1.160 kruse 451: next if ($hostid eq $lonhost);
452: my $hostname = &Apache::lonnet::hostname($hostid);
1.180 raeburn 453: next if (($hostname eq '') || ($spareservers{$hostname}));
454: $spareservers{$hostname} = 1;
455: my $protocol = $Apache::lonnet::protocol{$hostid};
456: $protocol = 'http' if ($protocol ne 'https');
457: $spares.='<br /><span style="font-size: larger;"><a href="'.$protocol.'://'.
1.160 kruse 458: $hostname.
459: '/adm/login?domain='.$authdomain.'">'.
460: $hostname.'</a>'.
1.180 raeburn 461: ' '.&mt('(preferred)').'</span>'.$/;
1.160 kruse 462: }
463: if ($spares) {
464: $spares.= '<br />';
465: }
466: my %all_hostnames = &Apache::lonnet::all_hostnames();
467: foreach my $hostid (sort
468: {
469: &Apache::lonnet::hostname($a) cmp
470: &Apache::lonnet::hostname($b);
471: }
472: keys(%all_hostnames)) {
1.180 raeburn 473: next if ($hostid eq $lonhost);
1.160 kruse 474: my $hostname = &Apache::lonnet::hostname($hostid);
1.180 raeburn 475: next if (($hostname eq '') || ($spareservers{$hostname}));
1.181 raeburn 476: $spareservers{$hostname} = 1;
1.180 raeburn 477: my $protocol = $Apache::lonnet::protocol{$hostid};
478: $protocol = 'http' if ($protocol ne 'https');
479: $spares.='<br /><a href="'.$protocol.'://'.
1.160 kruse 480: $hostname.
481: '/adm/login?domain='.$authdomain.'">'.
482: $hostname.'</a>';
483: }
484: $r->print(
1.180 raeburn 485: '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">'
486: .'<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">'
487: .'<head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>'
1.160 kruse 488: .&mt('The LearningOnline Network with CAPA')
489: .'</title></head>'
490: .'<body bgcolor="#FFFFFF">'
491: .'<h1>'.&mt('The LearningOnline Network with CAPA').'</h1>'
1.180 raeburn 492: .'<img src="/adm/lonKaputt/lonlogo_broken.gif" alt="broken icon" align="right" />'
1.160 kruse 493: .'<h3>'.&mt('This LON-CAPA server is temporarily not available for login.').'</h3>');
494: if ($spares) {
495: $r->print('<p>'.&mt('Please attempt to login to one of the following servers:')
496: .'</p>'
497: .$spares);
498: }
499: $r->print('</body>'
500: .'</html>'
501: );
502: return OK;
503: }
504:
505: # ----------------------------------------------- Apparently we are in business
506: $servadm=~s/\,/\<br \/\>/g;
507:
508: # ----------------------------------------------------------- Front page design
509: my $pgbg=&Apache::loncommon::designparm('login.pgbg',$domain);
510: my $font=&Apache::loncommon::designparm('login.font',$domain);
511: my $link=&Apache::loncommon::designparm('login.link',$domain);
512: my $vlink=&Apache::loncommon::designparm('login.vlink',$domain);
513: my $alink=&Apache::loncommon::designparm('login.alink',$domain);
514: my $mainbg=&Apache::loncommon::designparm('login.mainbg',$domain);
515: my $loginbox_bg=&Apache::loncommon::designparm('login.sidebg',$domain);
516: my $loginbox_header_bgcol=&Apache::loncommon::designparm('login.bgcol',$domain);
517: my $loginbox_header_textcol=&Apache::loncommon::designparm('login.textcol',$domain);
518: my $logo=&Apache::loncommon::designparm('login.logo',$domain);
519: my $img=&Apache::loncommon::designparm('login.img',$domain);
520: my $domainlogo=&Apache::loncommon::domainlogo($domain);
521: my $showbanner = 1;
522: my $showmainlogo = 1;
523: if (defined(&Apache::loncommon::designparm('login.showlogo_img',$domain))) {
524: $showbanner = &Apache::loncommon::designparm('login.showlogo_img',$domain);
525: }
526: if (defined(&Apache::loncommon::designparm('login.showlogo_logo',$domain))) {
527: $showmainlogo = &Apache::loncommon::designparm('login.showlogo_logo',$domain);
528: }
529: my $showadminmail;
530: my @possdoms = &Apache::lonnet::current_machine_domains();
531: if (grep(/^\Q$domain\E$/,@possdoms)) {
532: $showadminmail=&Apache::loncommon::designparm('login.adminmail',$domain);
533: }
534: my $showcoursecat =
535: &Apache::loncommon::designparm('login.coursecatalog',$domain);
536: my $shownewuserlink =
537: &Apache::loncommon::designparm('login.newuser',$domain);
538: my $showhelpdesk =
539: &Apache::loncommon::designparm('login.helpdesk',$domain);
540: my $now=time;
541: my $js = (<<ENDSCRIPT);
542:
543: <script type="text/javascript" language="JavaScript">
544: // <![CDATA[
545: function send()
546: {
547: this.document.server.elements.uname.value
548: =this.document.client.elements.uname.value;
549:
550: this.document.server.elements.udom.value
551: =this.document.client.elements.udom.value;
552:
553: uextkey=this.document.client.elements.uextkey.value;
554: lextkey=this.document.client.elements.lextkey.value;
555: initkeys();
556:
557: if(this.document.server.action.substr(0,5) === 'http:'){
1.165 raeburn 558: this.document.server.elements.upass0.value
559: =getCrypted(this.document.client.elements.upass$now.value);
1.166 raeburn 560: } else {
561: this.document.server.elements.upass0.value
562: =this.document.client.elements.upass$now.value;
1.167 raeburn 563: }
1.160 kruse 564:
565: this.document.client.elements.uname.value='';
566: this.document.client.elements.upass$now.value='';
567:
568: this.document.server.submit();
569: return false;
570: }
571:
572: function enableInput() {
573: this.document.client.elements.upass$now.removeAttribute("readOnly");
574: this.document.client.elements.uname.removeAttribute("readOnly");
575: this.document.client.elements.udom.removeAttribute("readOnly");
576: return;
577: }
578:
579: // ]]>
580: </script>
581:
582: ENDSCRIPT
583:
584: # --------------------------------------------------- Print login screen header
585:
586: my %add_entries = (
587: bgcolor => "$mainbg",
588: text => "$font",
589: link => "$link",
590: vlink => "$vlink",
591: alink => "$alink",
592: onload => 'javascript:enableInput();',);
593:
1.164 raeburn 594: my ($lonhost_in_use,$headextra,$headextra_exempt,@hosts,%defaultdomconf);
595: @hosts = &Apache::lonnet::current_machine_ids();
596: $lonhost_in_use = $lonhost;
1.163 raeburn 597: if (@hosts > 1) {
598: foreach my $hostid (@hosts) {
599: if (&Apache::lonnet::host_domain($hostid) eq $defdom) {
600: $lonhost_in_use = $hostid;
601: last;
602: }
603: }
604: }
1.164 raeburn 605: %defaultdomconf = &Apache::loncommon::get_domainconf($defdom);
606: $headextra = $defaultdomconf{$defdom.'.login.headtag_'.$lonhost_in_use};
607: $headextra_exempt = $defaultdomconf{$domain.'.login.headtag_exempt_'.$lonhost_in_use};
1.161 raeburn 608: if ($headextra) {
609: my $omitextra;
610: if ($headextra_exempt ne '') {
611: my @exempt = split(',',$headextra_exempt);
1.182 raeburn 612: my $ip = &Apache::lonnet::get_requestor_ip();
1.161 raeburn 613: if (grep(/^\Q$ip\E$/,@exempt)) {
614: $omitextra = 1;
615: }
616: }
617: unless ($omitextra) {
618: my $confname = $defdom.'-domainconfig';
1.163 raeburn 619: if ($headextra =~ m{^\Q/res/$defdom/$confname/login/headtag/$lonhost_in_use/\E}) {
1.161 raeburn 620: my $extra = &Apache::lonnet::getfile(&Apache::lonnet::filelocation("",$headextra));
621: unless ($extra eq '-1') {
622: $js .= "\n".$extra."\n";
623: }
624: }
625: }
626: }
627:
1.160 kruse 628: $r->print(&Apache::loncommon::start_page('The LearningOnline Network with CAPA Login',$js,
629: { 'redirect' => [$expire,'/adm/roles'],
630: 'add_entries' => \%add_entries,
631: 'only_body' => 1,}));
632:
633: # ----------------------------------------------------------------------- Texts
634:
635: my %lt=&Apache::lonlocal::texthash(
636: 'un' => 'Username',
637: 'pw' => 'Password',
638: 'dom' => 'Domain',
639: 'perc' => 'percent',
640: 'load' => 'Server Load',
641: 'userload' => 'User Load',
642: 'catalog' => 'Course/Community Catalog',
643: 'log' => 'Log in',
644: 'help' => 'Log-in Help',
645: 'serv' => 'Server',
646: 'servadm' => 'Server Administration',
647: 'helpdesk' => 'Contact Helpdesk',
648: 'forgotpw' => 'Forgot password?',
649: 'newuser' => 'New User?',
650: );
651: # -------------------------------------------------- Change password field name
652:
653: my $forgotpw = &forgotpwdisplay(%lt);
654: $forgotpw .= '<br />' if $forgotpw;
655: my $loginhelp = &Apache::lonauth::loginhelpdisplay($authdomain);
656: if ($loginhelp) {
657: $loginhelp = '<a href="'.$loginhelp.'">'.$lt{'help'}.'</a><br />';
658: }
659:
660: # ---------------------------------------------------- Serve out DES JavaScript
661: {
662: my $jsh=Apache::File->new($include."/londes.js");
663: $r->print(<$jsh>);
664: }
665: # ---------------------------------------------------------- Serve rest of page
666:
667: $r->print(
668: '<div class="LC_Box"'
669: .' style="margin:0 auto; padding:10px; width:90%; height: auto; background-color:#FFFFFF;">'
670: );
671:
672: $r->print(<<ENDSERVERFORM);
673: <form name="server" action="/adm/authenticate" method="post" target="_top">
674: <input type="hidden" name="logtoken" value="$logtoken" />
675: <input type="hidden" name="serverid" value="$lonhost" />
676: <input type="hidden" name="uname" value="" />
677: <input type="hidden" name="upass0" value="" />
678: <input type="hidden" name="udom" value="" />
679: <input type="hidden" name="localpath" value="$env{'form.localpath'}" />
680: <input type="hidden" name="localres" value="$env{'form.localres'}" />
681: </form>
682: ENDSERVERFORM
683: my $coursecatalog;
684: if (($showcoursecat eq '') || ($showcoursecat)) {
685: $coursecatalog = &coursecatalog_link($lt{'catalog'}).'<br />';
686: }
687: my $newuserlink;
688: if ($shownewuserlink) {
689: $newuserlink = &newuser_link($lt{'newuser'}).'<br />';
690: }
691: my $logintitle =
692: '<h2 class="LC_hcell"'
693: .' style="background:'.$loginbox_header_bgcol.';'
694: .' color:'.$loginbox_header_textcol.'">'
695: .$lt{'log'}
696: .'</h2>';
697:
698: my $noscript_warning='<noscript><span class="LC_warning"><b>'
699: .&mt('Use of LON-CAPA requires Javascript to be enabled in your web browser.')
700: .'</b></span></noscript>';
701: my $helpdeskscript;
702: my $contactblock = &contactdisplay(\%lt,$servadm,$showadminmail,
703: $authdomain,\$helpdeskscript,
704: $showhelpdesk,\@possdoms);
705:
706: my $mobileargs;
707: if ($clientmobile) {
708: $mobileargs = 'autocapitalize="off" autocorrect="off"';
709: }
710: my $loginform=(<<LFORM);
711: <form name="client" action="" onsubmit="return(send())">
712: <input type="hidden" name="lextkey" value="$lextkey" />
713: <input type="hidden" name="uextkey" value="$uextkey" />
714: <b><label for="uname">$lt{'un'}</label>:</b><br />
715: <input type="text" name="uname" id="uname" size="15" value="$authusername" readonly="readonly" $mobileargs /><br />
716: <b><label for="upass$now">$lt{'pw'}</label>:</b><br />
717: <input type="password" name="upass$now" id="upass$now" size="15" readonly="readonly" /><br />
718: <b><label for="udom">$lt{'dom'}</label>:</b><br />
719: <input type="text" name="udom" id="udom" size="15" value="$authdomain" readonly="readonly" $mobileargs /><br />
720: <input type="submit" value="$lt{'log'}" />
721: </form>
722: LFORM
723:
724: if ($showbanner) {
725: $r->print(<<HEADER);
726: <!-- The LON-CAPA Header -->
727: <div style="background:$pgbg;margin:0;width:100%;">
1.168 raeburn 728: <img src="$img" border="0" alt="The Learning Online Network with CAPA" class="LC_maxwidth" />
1.160 kruse 729: </div>
730: HEADER
731: }
732: $r->print(<<ENDTOP);
733: <div style="float:left;margin-top:0;">
734: <div class="LC_Box" style="background:$loginbox_bg;">
735: $logintitle
736: $loginform
737: $noscript_warning
738: </div>
739:
740: <div class="LC_Box" style="padding-top: 10px;">
741: $loginhelp
742: $forgotpw
743: $contactblock
744: $newuserlink
745: $coursecatalog
746: </div>
747: </div>
748:
749: <div>
750: ENDTOP
751: if ($showmainlogo) {
1.168 raeburn 752: $r->print(' <img src="'.$logo.'" alt="" class="LC_maxwidth" />'."\n");
1.160 kruse 753: }
754: $r->print(<<ENDTOP);
755: $announcements
756: </div>
757: <hr style="clear:both;" />
758: ENDTOP
759: my ($domainrow,$serverrow,$loadrow,$userloadrow,$versionrow);
760: $domainrow = <<"END";
761: <tr>
762: <td align="left" valign="top">
763: <small><b>$lt{'dom'}: </b></small>
764: </td>
765: <td align="left" valign="top">
766: <small><tt> $domain</tt></small>
767: </td>
768: </tr>
769: END
770: $serverrow = <<"END";
771: <tr>
772: <td align="left" valign="top">
773: <small><b>$lt{'serv'}: </b></small>
774: </td>
775: <td align="left" valign="top">
776: <small><tt> $lonhost ($role)</tt></small>
777: </td>
778: </tr>
779: END
780: if ($loadlim) {
781: $loadrow = <<"END";
782: <tr>
783: <td align="left" valign="top">
784: <small><b>$lt{'load'}: </b></small>
785: </td>
786: <td align="left" valign="top">
787: <small><tt> $loadpercent $lt{'perc'}</tt></small>
788: </td>
789: </tr>
790: END
791: }
792: if ($uloadlim) {
793: $userloadrow = <<"END";
794: <tr>
795: <td align="left" valign="top">
796: <small><b>$lt{'userload'}: </b></small>
797: </td>
798: <td align="left" valign="top">
799: <small><tt> $userloadpercent $lt{'perc'}</tt></small>
800: </td>
801: </tr>
802: END
803: }
804: if (($version ne '') && ($version ne '<!-- VERSION -->')) {
805: $versionrow = <<"END";
806: <tr>
807: <td colspan="2" align="left">
808: <small>$version</small>
809: </td>
810: </tr>
811: END
812: }
813:
814: $r->print(<<ENDDOCUMENT);
815: <div style="float: left;">
816: <table border="0" cellspacing="0" cellpadding="0">
817: $domainrow
818: $serverrow
819: $loadrow
820: $userloadrow
821: $versionrow
822: </table>
823: </div>
824: <div style="float: right;">
825: $domainlogo
826: </div>
827: <br style="clear:both;" />
828: </div>
829:
830: <script type="text/javascript">
831: // <![CDATA[
832: // the if prevents the script error if the browser can not handle this
833: if ( document.client.uname ) { document.client.uname.focus(); }
834: // ]]>
835: </script>
836: $helpdeskscript
837:
838: ENDDOCUMENT
839: my %endargs = ( 'noredirectlink' => 1, );
840: $r->print(&Apache::loncommon::end_page(\%endargs));
841: return OK;
842: }
843:
844: sub check_loginvia {
1.177 raeburn 845: my ($domain,$lonhost,$lonidsdir,$balcookie,$linkprot) = @_;
1.176 raeburn 846: if ($domain eq '' || $lonhost eq '' || $lonidsdir eq '') {
1.160 kruse 847: return;
848: }
849: my %domconfhash = &Apache::loncommon::get_domainconf($domain);
850: my $loginvia = $domconfhash{$domain.'.login.loginvia_'.$lonhost};
851: my $loginvia_exempt = $domconfhash{$domain.'.login.loginvia_exempt_'.$lonhost};
852: my $output;
853: if ($loginvia ne '') {
854: my $noredirect;
1.182 raeburn 855: my $ip = &Apache::lonnet::get_requestor_ip();
1.160 kruse 856: if ($ip eq '127.0.0.1') {
857: $noredirect = 1;
858: } else {
859: if ($loginvia_exempt ne '') {
860: my @exempt = split(',',$loginvia_exempt);
861: if (grep(/^\Q$ip\E$/,@exempt)) {
862: $noredirect = 1;
863: }
864: }
865: }
866: unless ($noredirect) {
867: my ($newhost,$path);
868: if ($loginvia =~ /:/) {
869: ($newhost,$path) = split(':',$loginvia);
870: } else {
871: $newhost = $loginvia;
872: }
873: if ($newhost ne $lonhost) {
874: if (&Apache::lonnet::hostname($newhost) ne '') {
1.176 raeburn 875: if ($balcookie) {
876: my ($balancer,$cookie) = split(/:/,$balcookie);
877: if ($cookie =~ /^($match_domain)_($match_username)_([a-f0-9]+)$/) {
878: my ($udom,$uname,$cookieid) = ($1,$2,$3);
879: unless (&Apache::lonnet::delbalcookie($cookie,$balancer) eq 'ok') {
880: if ((-d $lonidsdir) && (opendir(my $dh,$lonidsdir))) {
881: while (my $filename=readdir($dh)) {
882: if ($filename=~/^(\Q$uname\E_\d+_\Q$udom\E_$match_lonid)\.id$/) {
883: my $handle = $1;
884: my %hash =
885: &Apache::lonnet::get_sessionfile_vars($handle,$lonidsdir,
886: ['request.balancercookie',
887: 'user.linkedenv']);
888: if ($hash{'request.balancercookie'} eq "$balancer:$cookieid") {
889: if (unlink("$lonidsdir/$filename")) {
890: if (($hash{'user.linkedenv'} =~ /^[a-f0-9]+_linked$/) &&
891: (-l "$lonidsdir/$hash{'user.linkedenv'}.id") &&
892: (readlink("$lonidsdir/$hash{'user.linkedenv'}.id") eq "$lonidsdir/$filename")) {
893: unlink("$lonidsdir/$hash{'user.linkedenv'}.id");
894: }
895: }
896: }
897: last;
898: }
899: }
900: closedir($dh);
901: }
902: }
903: }
904: }
1.177 raeburn 905: $output = &redirect_page($newhost,$path,$linkprot);
1.160 kruse 906: }
907: }
908: }
909: }
910: return $output;
911: }
912:
913: sub redirect_page {
1.177 raeburn 914: my ($desthost,$path,$linkprot) = @_;
1.178 raeburn 915: my $hostname = &Apache::lonnet::hostname($desthost);
1.160 kruse 916: my $protocol = $Apache::lonnet::protocol{$desthost};
917: $protocol = 'http' if ($protocol ne 'https');
918: unless ($path =~ m{^/}) {
919: $path = '/'.$path;
920: }
1.178 raeburn 921: my $url = $protocol.'://'.$hostname.$path;
1.160 kruse 922: if ($env{'form.firsturl'} ne '') {
923: $url .='?firsturl='.$env{'form.firsturl'};
924: }
1.177 raeburn 925: if ($linkprot) {
926: my $ltoken = &Apache::lonnet::tmpput({linkprot => $linkprot},$desthost);
927: if ($ltoken) {
928: $url .= (($url =~ /\?/) ? '&' : '?').'ltoken='.$ltoken;
929: }
930: }
1.160 kruse 931: my $start_page = &Apache::loncommon::start_page('Switching Server ...',undef,
932: {'redirect' => [0,$url],});
933: my $end_page = &Apache::loncommon::end_page();
934: return $start_page.$end_page;
935: }
936:
937: sub contactdisplay {
938: my ($lt,$servadm,$showadminmail,$authdomain,$helpdeskscript,$showhelpdesk,
939: $possdoms) = @_;
940: my $contactblock;
941: my $origmail;
942: if (ref($possdoms) eq 'ARRAY') {
943: if (grep(/^\Q$authdomain\E$/,@{$possdoms})) {
944: $origmail = $Apache::lonnet::perlvar{'lonSupportEMail'};
945: }
946: }
947: my $requestmail =
948: &Apache::loncommon::build_recipient_list(undef,'helpdeskmail',
949: $authdomain,$origmail);
950: unless ($showhelpdesk eq '0') {
951: if ($requestmail =~ m/[^\@]+\@[^\@]+/) {
952: $showhelpdesk = 1;
953: } else {
954: $showhelpdesk = 0;
955: }
956: }
957: if ($servadm && $showadminmail) {
958: $contactblock .= $$lt{'servadm'}.':<br />'.
959: '<tt>'.$servadm.'</tt><br />';
960: }
961: if ($showhelpdesk) {
962: $contactblock .= '<a href="javascript:helpdesk()">'.$lt->{'helpdesk'}.'</a><br />';
963: my $thisurl = &escape('/adm/login');
964: $$helpdeskscript = <<"ENDSCRIPT";
965: <script type="text/javascript">
966: // <![CDATA[
967: function helpdesk() {
968: var possdom = document.client.udom.value;
969: var codedom = possdom.replace( new RegExp("[^A-Za-z0-9.\\-]","g"),'');
970: if (codedom == '') {
971: codedom = "$authdomain";
972: }
973: var querystr = "origurl=$thisurl&codedom="+codedom;
974: document.location.href = "/adm/helpdesk?"+querystr;
975: return;
976: }
977: // ]]>
978: </script>
979: ENDSCRIPT
980: }
981: return $contactblock;
982: }
983:
984: sub forgotpwdisplay {
985: my (%lt) = @_;
986: my $prompt_for_resetpw = 1;
987: if ($prompt_for_resetpw) {
988: return '<a href="/adm/resetpw">'.$lt{'forgotpw'}.'</a>';
989: }
990: return;
991: }
992:
993: sub coursecatalog_link {
994: my ($linkname) = @_;
995: return <<"END";
996: <a href="/adm/coursecatalog">$linkname</a>
997: END
998: }
999:
1000: sub newuser_link {
1001: my ($linkname) = @_;
1002: return '<a href="/adm/createaccount">'.$linkname.'</a>';
1003: }
1004:
1005: 1;
1006: __END__
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