1: # The LearningOnline Network
2: # Starts a user off based of an existing token.
3: #
4: # $Id: migrateuser.pm,v 1.63 2022/06/30 21:04:13 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::migrateuser;
30:
31: use strict;
32: use LONCAPA qw(:DEFAULT :match);
33: use Apache::Constants qw(:common :http :methods :remotehost);
34: use Apache::lonauth;
35: use Apache::lonnet;
36: use Apache::loncommon;
37: use Apache::lonlocal;
38: use Apache::lonlogin();
39: use Apache::ltiauth;
40: use Apache::switchserver;
41: use CGI::Cookie;
42:
43: sub goto_login {
44: my ($r,$domain,$data) = @_;
45: if ((ref($data) eq 'HASH') && ($data->{'lti.login'})) {
46: &Apache::ltiauth::invalid_request($r,'22');
47: } else {
48: &Apache::loncommon::content_type($r,'text/html');
49: $r->send_http_header;
50: my $url = '/adm/login';
51: if ($domain) {
52: $url .= '?domain='.$domain;
53: }
54: $r->print(&Apache::loncommon::start_page('Going to login',undef,
55: {'redirect' => [0,$url],}).
56: '<h1>'.&mt('One moment please...').'</h1>'.
57: '<p>'.&mt('Transferring to login page.').'</p>'.
58: &Apache::loncommon::end_page());
59: }
60: return OK;
61: }
62:
63: sub sso_check {
64: my ($data) = @_;
65: my %extra_env;
66: if (ref($data) eq 'HASH') {
67: if ($data->{'sso.login'}) {
68: $extra_env{'request.sso.login'} = $data->{'sso.login'};
69: }
70: if ($data->{'sso.reloginserver'}) {
71: $extra_env{'request.sso.reloginserver'} =
72: $data->{'sso.reloginserver'};
73: }
74: }
75: return \%extra_env;
76: }
77:
78: sub lti_check {
79: my ($data) = @_;
80: my %lti_env;
81: if (ref($data) eq 'HASH') {
82: if ($data->{'lti.login'}) {
83: $lti_env{'request.lti.login'} = $data->{'lti.login'};
84: if ($data->{'lti.reqcrs'}) {
85: $lti_env{'request.lti.reqcrs'} = $data->{'lti.reqcrs'};
86: }
87: if ($data->{'lti.reqrole'}) {
88: $lti_env{'request.lti.reqrole'} = $data->{'lti.reqrole'};
89: }
90: if ($data->{'lti.selfenrollrole'}) {
91: $lti_env{'request.lti.selfenrollrole'} = $data->{'lti.selfenrollrole'};
92: }
93: if ($data->{'lti.uri'}) {
94: $lti_env{'request.lti.uri'} = $data->{'lti.uri'};
95: }
96: if ($data->{'lti.target'}) {
97: $lti_env{'request.lti.target'} = $data->{'lti.target'};
98: }
99: if ($data->{'lti.sourcecrs'}) {
100: $lti_env{'request.lti.sourcecrs'} = $data->{'lti.sourcecrs'};
101: }
102: }
103: if ($data->{'lti.passbackid'}) {
104: $lti_env{'request.lti.passbackid'} = $data->{'lti.passbackid'};
105: }
106: if ($data->{'lti.passbackurl'}) {
107: $lti_env{'request.lti.passbackurl'} = $data->{'lti.passbackurl'};
108: }
109: if ($data->{'lti.rosterid'}) {
110: $lti_env{'request.lti.rosterid'} = $data->{'lti.rosterid'};
111: }
112: if ($data->{'lti.rosterurl'}) {
113: $lti_env{'request.lti.rosterurl'} = $data->{'lti.rosterurl'};
114: }
115: }
116: return \%lti_env;
117: }
118:
119: sub canhost {
120: my ($uname,$udom,$lonhost,$loncaparev) = @_;
121: my $canhost;
122: if (&Apache::lonnet::is_library($lonhost)) {
123: my @possdoms = &Apache::lonnet::current_machine_domains();
124: my %roleshash = &Apache::lonnet::get_my_roles($uname,$udom,'userroles','',['ca','aa'],\@possdoms);
125: if (keys(%roleshash)) {
126: foreach my $key (keys(%roleshash)) {
127: my $audom = (split(/:/,$key))[1];
128: if ((&Apache::lonnet::will_trust('othcoau',$udom,$audom)) &&
129: (&Apache::lonnet::will_trust('coaurem',$audom,$udom))) {
130: $canhost = 1;
131: last;
132: }
133: }
134: }
135: }
136: unless ($canhost) {
137: my $uprimary_id = &Apache::lonnet::domain($udom,'primary');
138: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
139: my @intdoms;
140: my $internet_names = &Apache::lonnet::get_internet_names($lonhost);
141: if (ref($internet_names) eq 'ARRAY') {
142: @intdoms = @{$internet_names};
143: }
144: if ($uint_dom ne '' && grep(/^\Q$uint_dom\E$/,@intdoms)) {
145: $canhost = 1;
146: } else {
147: my $hostname = &Apache::lonnet::hostname($lonhost);
148: my $serverhomeID = &Apache::lonnet::get_server_homeID($hostname);
149: my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID);
150: my %defdomdefaults = &Apache::lonnet::get_domain_defaults($serverhomedom);
151: my %udomdefaults = &Apache::lonnet::get_domain_defaults($udom);
152: $canhost =
153: &Apache::lonnet::can_host_session($udom,$lonhost,$loncaparev,
154: $udomdefaults{'remotesessions'},
155: $defdomdefaults{'hostedsessions'});
156: }
157: }
158: return $canhost;
159: }
160:
161: sub ip_changed {
162: my ($r,$udom,$camefrom,$idsref,$dataref) = @_;
163: &Apache::loncommon::content_type($r,'text/html');
164: $r->send_http_header;
165: if (ref($dataref) eq 'HASH') {
166: my $title = 'LON-CAPA Session redirected';
167: my $message = &mt('Your internet address has changed since you logged in.');
168: my $rule_in_effect;
169: if ($dataref->{'balancer'}) {
170: my $baldom = &Apache::lonnet::host_domain($camefrom);
171: my $balprimaryid = &Apache::lonnet::domain($baldom,'primary');
172: my $balintdom = &Apache::lonnet::internet_dom($balprimaryid);
173: my $uprimaryid = &Apache::lonnet::domain($udom,'primary');
174: my $uintdom = &Apache::lonnet::internet_dom($uprimaryid);
175: my $dom_in_use;
176: if (($uintdom ne '') && ($uintdom eq $balintdom)) {
177: $dom_in_use = $udom;
178: } else {
179: $dom_in_use = $baldom;
180: }
181: my ($result,$cached)=&Apache::lonnet::is_cached_new('loadbalancing',$dom_in_use);
182: unless (defined($cached)) {
183: my $cachetime = 60*60*24;
184: my %domconfig =
185: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$dom_in_use);
186: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
187: $result = &Apache::lonnet::do_cache_new('loadbalancing',$dom_in_use,
188: $domconfig{'loadbalancing'},$cachetime);
189: }
190: }
191: if (ref($result) eq 'HASH') {
192: (undef,my $currtargets,my $currrules) =
193: &Apache::lonnet::check_balancer_result($result,$dataref->{'server'});
194: if (ref($currrules) eq 'HASH') {
195: if ($dataref->{'sso.login'}) {
196: if ($currrules->{'_LC_ipchangesso'} ne '') {
197: $rule_in_effect = $currrules->{'_LC_ipchangesso'};
198: }
199: } else {
200: if ($currrules->{'_LC_ipchange'} ne '') {
201: $rule_in_effect = $currrules->{'_LC_ipchange'};
202: }
203: }
204: }
205: }
206: }
207: my $url;
208: my $lonhost= $r->dir_config('lonHostID');
209: my $switchto = $lonhost;
210: if ($rule_in_effect ne 'offloadedto') {
211: my ($hosthere,@ids);
212: if (ref($idsref) eq 'ARRAY') {
213: @ids=@{$idsref};
214: }
215: unless ($rule_in_effect eq 'balancer') {
216: if (grep(/^\Q$rule_in_effect\E$/,@ids)) {
217: $hosthere = 1;
218: }
219: }
220: unless ($hosthere) {
221: if ($dataref->{'role'}) {
222: my ($adom,$aname);
223: if ($dataref->{'role'} =~ m{^au\./($match_domain)/$}) {
224: $adom = $1;
225: $aname = $dataref->{'username'};
226: } elsif ($dataref->{'role'} =~ m{^(?:ca|aa)\./($match_domain)/($match_username)$}) {
227: $adom = $1;
228: $aname = $2;
229: }
230: if ($adom ne '' && $aname ne '') {
231: my $ahome = &Apache::lonnet::homeserver($aname,$adom);
232: unless ($ahome eq 'no_host') {
233: if ($ahome && grep(/^\Q$ahome\E$/,@ids)) {
234: $hosthere = 1;
235: }
236: }
237: }
238: }
239: }
240: unless ($hosthere) {
241: my $hostname;
242: if ($rule_in_effect eq 'balancer') {
243: $hostname = &Apache::lonnet::hostname($dataref->{'server'});
244: if ($hostname) {
245: $switchto = $dataref->{'server'};
246: }
247: } else {
248: $hostname = &Apache::lonnet::hostname($rule_in_effect);
249: if ($hostname) {
250: $switchto = $rule_in_effect;
251: }
252: }
253: if ($hostname) {
254: my $protocol = $Apache::lonnet::protocol{$switchto};
255: $protocol = 'http' if ($protocol ne 'https');
256: my $alias = &Apache::lonnet::use_proxy_alias($r,$switchto);
257: $hostname = $alias if ($alias ne '');
258: $url = $protocol.'://'.$hostname;
259: if ($rule_in_effect eq 'balancer') {
260: $message .= '<br />'.
261: &mt('As a result, your LON-CAPA session is being redirected to the server where you originally logged in.');
262: } else {
263: $message .= '<br />'.
264: &mt('As a result, your LON-CAPA session is being redirected.');
265: }
266: }
267: }
268: unless ($hosthere) {
269: if (($dataref->{'balancer'}) && ($dataref->{'balcookie'})) {
270: &Apache::lonnet::delbalcookie($dataref->{'balcookie'},$dataref->{'balancer'});
271: }
272: }
273: }
274: if ($dataref->{'sso.login'}) {
275: $url .= '/adm/roles';
276: } else {
277: $url .= '/adm/login';
278: if ($udom) {
279: $url .= '?domain='.$udom;
280: }
281: $message .= '<br />'.&mt('You will need to provide your password one more time.');
282: }
283: my %info= (
284: 'domain' => $udom,
285: 'username' => $dataref->{'username'},
286: 'sessionserver' => $lonhost,
287: );
288: my @names = ('origurl','symb','role','linkprotuser','linkprotexit','linkprot','linkkey');
289: foreach my $name (@names) {
290: if ($dataref->{$name} ne '') {
291: $info{$name} = $dataref->{$name};
292: }
293: }
294: my $iptoken = &Apache::lonnet::tmpput(\%info,$switchto,'link');
295: unless ($iptoken eq 'conlost') {
296: $url .= (($url =~ /\?/) ? '&' : '?') . 'iptoken='.$iptoken;
297: }
298: $r->print(&Apache::loncommon::start_page($title,undef,
299: {'redirect' =>
300: [2,$url],}).
301: '<h1>'.&mt('One moment please...').'</h1>'.
302: '<p class="LC_warning">'.$message.'</p>'.
303: &Apache::loncommon::end_page());
304: } else {
305: return &goto_login($r);
306: }
307: return OK;
308: }
309:
310: sub logout {
311: my ($r,$ip,$handle,$data,$lti_env,$linkprot_info) = @_;
312: my $lonidsdir=$r->dir_config('lonIDsDir');
313: if (unlink("$lonidsdir/$handle.id")) {
314: if (($env{'user.linkedenv'} =~ /^[a-f0-9]+_linked$/) &&
315: (-l "$lonidsdir/$env{'user.linkedenv'}.id") &&
316: (readlink("$lonidsdir/$env{'user.linkedenv'}.id") eq "$lonidsdir/$handle.id")) {
317: unlink("$lonidsdir/$env{'user.linkedenv'}.id");
318: }
319: }
320: my %temp=('logout' => time);
321: &Apache::lonnet::put('email_status',\%temp);
322: &Apache::lonnet::log($env{'user.domain'},
323: $env{'user.name'},
324: $env{'user.home'},
325: "Logout $ip");
326:
327: &Apache::loncommon::content_type($r,'text/html');
328:
329: #expire the cookies
330: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
331: foreach my $name (keys(%cookies)) {
332: next unless ($name =~ /^lon(|S|Link|Pub)ID$/);
333: my $c = new CGI::Cookie(-name => $name,
334: -value => '',
335: -expires => '-10y',);
336: $r->headers_out->add('Set-cookie' => $c);
337: }
338: my $lonhost = $r->dir_config('lonHostID');
339: my ($url,$token,$delay,%info,%user_info);
340: if (ref($data) eq 'HASH') {
341: %user_info=('ip' => $ip,
342: 'domain' => $data->{'domain'},
343: 'username' => $data->{'username'},
344: 'home' => $data->{'home'},
345: 'role' => $data->{'role'},
346: 'origurl' => $data->{'origurl'},
347: 'symb' => $data->{'symb'},
348: 'server' => $lonhost);
349: }
350: $delay = 0.1;
351: if (ref($linkprot_info) eq 'HASH') {
352: if ($linkprot_info->{'linkprotuser'} ne '') {
353: $token = &Apache::lonnet::tmpput($linkprot_info,$lonhost);
354: $url = '/adm/login?ltoken='.$token;
355: } else {
356: foreach my $key (keys(%user_info)) {
357: if ($user_info{$key} eq '') {
358: delete($user_info{$key});
359: }
360: }
361: %info = (%user_info,%{$linkprot_info});
362: $token = &Apache::lonnet::tmpput(\%info,$lonhost);
363: $url = '/adm/migrateuser?token='.$token;
364: }
365: $delay = 0;
366: } else {
367: my %lti_info;
368: if (ref($lti_env) eq 'HASH') {
369: foreach my $key (sort(keys(%{$lti_env}))) {
370: if ($key =~ /^request\.(.+)$/) {
371: $lti_info{$1} = $lti_env->{$key};
372: }
373: }
374: }
375: %info = (%user_info,%lti_info);
376: $token = &Apache::lonnet::tmpput(\%info,$lonhost);
377: $url = '/adm/migrateuser?token='.$token;
378: }
379: $r->send_http_header;
380: $r->print(
381: &Apache::loncommon::start_page('Updating Session ...',undef,
382: {'redirect' => [$delay,$url],
383: 'only_body' => 1,}).
384: &Apache::loncommon::end_page());
385: if ($env{'request.balancercookie'}) {
386: my ($balancer,$cookie) = split(/:/,$env{'request.balancercookie'});
387: if ((&Apache::lonnet::hostname($balancer)) && ($cookie =~ /^[a-f0-9]{32}$/)) {
388: $cookie = $env{'user.domain'}.'_'.$env{'user.name'}.'_'.$cookie;
389: &Apache::lonnet::delbalcookie($cookie,$balancer);
390: }
391: }
392: $r->register_cleanup(\&flush_course_logs);
393: return;
394: }
395:
396: sub conlost_userhome {
397: my ($r,$idsref,$dataref) = @_;
398: return unless ((ref($idsref) eq 'ARRAY') && (ref($dataref) eq 'HASH'));
399: my @ids = @{$idsref};
400: my %data = %{$dataref};
401: my ($lonhost,$lowest_load,$otherserver,$is_balancer,%conlost,%posstargets);
402: $lonhost = $r->dir_config('lonHostID');
403: if (grep(/^\Q$lonhost\E$/,split(/,/,$data{'dom_balancers'}))) {
404: $is_balancer = 1;
405: }
406: $lowest_load = 30000;
407: if ($data{'conlost'} ne '') {
408: map { $conlost{$_} = 1; } split(/,/,$data{'conlost'});
409: }
410: if ($data{'loncfail'}) {
411: if ($lonhost ne $data{'from_balancer'}) {
412: my ($is_balancer,$posshost,$setcookie,$offloadto,$dom_balancers) =
413: &Apache::lonnet::check_loadbalancing($data{'username'},$data{'domain'});
414: if ($is_balancer) {
415: if (ref($offloadto) eq 'HASH') {
416: $data{'offloadto'} = '';
417: foreach my $key (keys(%{$offloadto})) {
418: if (ref($offloadto->{$key}) eq 'ARRAY') {
419: $data{'offloadto'} .= $key.'='.join(',',@{$offloadto->{$key}}).'&';
420: }
421: }
422: $data{'offloadto'} =~ s/\&$//;
423: } elsif (ref($offloadto) eq 'ARRAY') {
424: $data{'offloadto'} = join(',',@{$offloadto});
425: }
426: }
427: }
428: } else {
429: $conlost{$lonhost} = 1;
430: $data{'conlost'} = join(',',sort(keys(%conlost)));
431: }
432: if ($data{'offloadto'} =~ /\&/) {
433: foreach my $item (split(/\&/,$data{'offloadto'})) {
434: my ($type,$targets) = split(/\=/,$item);
435: @{$posstargets{$type}} = split(/,/,$targets);
436: }
437: } elsif ($data{'offloadto'} =~ /=/) {
438: my ($type,$targets) = split(/\=/,$data{'offloadto'});
439: @{$posstargets{$type}} = split(/,/,$targets);
440: } else {
441: @{$posstargets{'default'}} = split(/,/,$data{'offloadto'});
442: }
443: if (ref($posstargets{'primary'}) eq 'ARRAY') {
444: foreach my $try_server (@{$posstargets{'primary'}}) {
445: next if ($conlost{$try_server});
446: next if ((grep(/^\Q$try_server\E$/,@ids)) && !$data{'loncfail'});
447: ($otherserver,$lowest_load) =
448: &Apache::lonnet::compare_server_load($try_server,
449: $otherserver,
450: $lowest_load);
451: }
452: }
453: my $found_server = ($otherserver ne '' && $lowest_load < 100);
454: if (!$found_server) {
455: if (ref($posstargets{'default'}) eq 'ARRAY') {
456: foreach my $try_server (@{$posstargets{'default'}}) {
457: next if ($conlost{$try_server});
458: next if ((grep(/^\Q$try_server\E$/,@ids)) && !$data{'loncfail'});
459: ($otherserver,$lowest_load) =
460: &Apache::lonnet::compare_server_load($try_server,
461: $otherserver,
462: $lowest_load);
463: }
464: }
465: }
466: if ($otherserver ne '') {
467: my $switchto = &Apache::lonnet::hostname($otherserver);
468: if ($switchto ne '') {
469: $data{'server'} = $lonhost;
470: if ($data{'loncfail'}) {
471: delete($data{'loncfail'});
472: }
473: if (grep(/^\Q$otherserver\E$/,split(/,/,$data{'dom_balancers'}))) {
474: $data{'noloadbalance'} = $otherserver;
475: }
476: &do_server_switch($r,$otherserver,$switchto,$is_balancer,\%data);
477: return $otherserver;
478: } else {
479: #FIXME Contents of $data{offloadto} contains invalid hostID.
480: }
481: } else {
482: my (%poss_balancers,%tried_balancers);
483: map { $poss_balancers{$_} = 1; } split(/,/,$data{'dom_balancers'});
484: map { $tried_balancers{$_} = 1; } split(/,/,$data{'tried_balancers'});
485: if (keys(%poss_balancers)) {
486: foreach my $try_server (sort(keys(%poss_balancers))) {
487: next if (grep(/^\Q$try_server\E$/,@ids));
488: next if (($data{'loncfail'}) && ($tried_balancers{$try_server}));
489: my $alreadytried;
490: foreach my $key (keys(%posstargets)) {
491: if ((ref($posstargets{$key}) eq 'ARRAY') &&
492: (grep(/^\Q$try_server\E$/,@{$posstargets{$key}}))) {
493: $alreadytried = 1;
494: last;
495: }
496: }
497: unless ($alreadytried) {
498: if (&Apache::lonnet::reply('ping',$try_server) eq $try_server) {
499: $otherserver = $try_server;
500: last;
501: }
502: }
503: }
504: }
505: if ($otherserver ne '') {
506: my $switchto = &Apache::lonnet::hostname($otherserver);
507: if ($switchto ne '') {
508: $data{'server'} = $lonhost;
509: $data{'loncfail'} = $lonhost;
510: $tried_balancers{$otherserver} = 1;
511: $data{'tried_balancers'} = join(',',sort(keys(%tried_balancers)));
512: &do_server_switch($r,$otherserver,$switchto,$is_balancer,\%data);
513: return $otherserver;
514: } else {
515: #FIXME Contents of $data{'dom_balancers'} contains invalid hostID.
516: }
517: } else {
518: if ($data{'loncfail'}) {
519: #FIXME Nowhere to go.
520: } else {
521: # FIXME Send back to a balancer (no token); different balancer if this is a balancer.
522: # Send command to balancer to exclude this host using http instead on lonc/lond
523: }
524: }
525: }
526: return;
527: }
528:
529: sub do_server_switch {
530: my ($r,$otherserver,$switchto,$is_balancer,$dataref) = @_;
531: if (ref($dataref) eq 'HASH') {
532: my $domain = $dataref->{'domain'};
533: my $username = $dataref->{'username'};
534: # If this is a balancer set a balancer cookie unless browser already sent
535: # LON-CAPA load balancer cookie which points at the target server.
536: if ($is_balancer) {
537: my $newcookieid;
538: my ($found_server,$balancer_cookie) = &Apache::lonnet::check_for_balancer_cookie($r,1);
539: unless (($found_server eq $otherserver) &&
540: ($balancer_cookie =~ /^\Q$domain\E_\Q$username\E_/)) {
541: $newcookieid =
542: &Apache::switchserver::balancer_cookieid($r,$otherserver,$username,$domain);
543: if ($newcookieid) {
544: $dataref->{'balcookie'} = $newcookieid;
545: }
546: }
547: }
548: my $token = &Apache::lonnet::tmpput($dataref,$otherserver);
549: my $protocol = $Apache::lonnet::protocol{$otherserver};
550: $protocol = 'http' if ($protocol ne 'https');
551: my $url = $protocol.'://'.$switchto.'/adm/login?domain='.$domain.
552: '&username='.$username.'&token='.$token;
553: $r->send_http_header;
554: $r->print(
555: &Apache::loncommon::start_page('Switching Server ...',undef,
556: {'redirect' => [0.1,$url]}).
557: &Apache::loncommon::end_page());
558: }
559: return;
560: }
561:
562: sub log_switch {
563: my ($r,$data,$lti_env,$ip) = @_;
564: my $lonhost = $r->dir_config('lonHostID');
565: return unless ((ref($data) eq 'HASH') && (ref($lti_env) eq 'HASH'));
566: my $now = time;
567: my %temp=('switchserver' => $now.':'.$lonhost,$data->{'role'});
568: &Apache::lonnet::put('email_status',\%temp);
569: my $logmsg = "Switch Server to $lonhost";
570: if ($data->{'role'}) {
571: $logmsg .= " with role: ".$data->{'role'};
572: } elsif (($lti_env->{'reqcrs'}) && ($lti_env->{'reqrole'} eq 'cc')) {
573: $logmsg .= " to create new LTI course";
574: } elsif ($lti_env->{'selfenrollrole'}) {
575: $logmsg .= " to selfenroll with role: ".$lti_env->{'selfenrollrole'};
576: } else {
577: $logmsg .= " (no role)";
578: }
579: $logmsg .= ' '.$ip;
580: &Apache::lonnet::log($data->{'domain'},$data->{'username'},$data->{'home'},$logmsg);
581: }
582:
583: sub flush_course_logs {
584: &Apache::lonnet::flushcourselogs();
585: return OK;
586: }
587:
588: sub handler {
589: my ($r) = @_;
590:
591: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['token']);
592: my %data = &Apache::lonnet::tmpget($env{'form.token'});
593: if (keys(%data) == 0) {
594: return &goto_login($r);
595: }
596: my $delete = &Apache::lonnet::tmpdel($env{'form.token'});
597:
598: &Apache::lonlocal::get_language_handle($r);
599:
600: if ($delete ne 'ok') {
601: return &goto_login($r,undef,\%data);
602: }
603:
604: if (!defined($data{'username'}) || !defined($data{'domain'})) {
605: return &goto_login($r,undef,\%data);
606: }
607: my ($home,@ids);
608: @ids=&Apache::lonnet::current_machine_ids();
609: my $ip = &Apache::lonnet::get_requestor_ip($r,REMOTE_NOLOOKUP);
610: if ($data{'ip'} ne $ip) {
611: &Apache::lonnet::logthis('IP change when session migration requested -- was: '.
612: $data{'ip'}.'; now: '.$ip.' for '.$data{'username'}.':'.$data{'domain'});
613: return &ip_changed($r,$data{'domain'},$data{'server'},\@ids,\%data);
614: }
615: if ($data{'loncfail'}) {
616: &Apache::lonnet::logthis('Returned from '.$data{'server'}.' -- no connection to library node or other access node(s)');
617: my $otherserver = &conlost_userhome($r,\@ids,\%data);
618: if ($otherserver ne '') {
619: &Apache::lonnet::logthis("Switching to $otherserver");
620: }
621: return OK;
622: } else {
623: $home=&Apache::lonnet::homeserver($data{'username'},$data{'domain'});
624: if ($home eq 'no_host') {
625: if (($data{'home'} ne '') && (&Apache::lonnet::hostname($data{'home'}))) {
626: &Apache::lonnet::reconlonc($data{'home'});
627: $home=&Apache::lonnet::homeserver($data{'username'},$data{'domain'});
628: if ($home eq 'no_host') {
629: unless (grep(/^\Q$data{'home'}\E$/,@ids)) {
630: if (&Apache::lonnet::reply('ping',$data{'home'}) eq 'con_lost') {
631: my $otherserver = &conlost_userhome($r,\@ids,\%data);
632: if ($otherserver ne '') {
633: &Apache::lonnet::logthis("No connection to home server ($data{'home'}) for $data{'username'}:$data{'domain'}. Switching to $otherserver");
634: }
635: return OK;
636: }
637: }
638: }
639: }
640: }
641: }
642:
643: my $udom;
644: if (&Apache::lonnet::domain($data{'domain'})) {
645: $udom=$data{'domain'};
646: }
647: if ($home eq 'no_host') { return &goto_login($r,$udom,\%data); }
648: if (&Apache::lonnet::hostname($home) eq '') { return &goto_login($r,$udom,\%data); }
649:
650: unless (grep(/^\Q$home\E$/,@ids)) {
651: my $lonhost = $r->dir_config('lonHostID');
652: my $loncaparev = $r->dir_config('lonVersion');
653: unless (&canhost($data{'username'},$data{'domain'},$lonhost,$loncaparev)) {
654: return &goto_login($r,$udom,\%data);
655: }
656: }
657:
658: my $rolemsg;
659: if ($data{'role'}) {
660: $rolemsg = "role: $data{'role'}";
661: } else {
662: $rolemsg = '(no role)';
663: }
664:
665: &Apache::lonnet::logthis("Allowing access for $data{'username'}:$data{'domain'} $rolemsg");
666:
667: my $sso_env = &sso_check(\%data);
668: my $lti_env = <i_check(\%data);
669:
670: my $extra_env;
671: if ((ref($sso_env) eq 'HASH') && (keys(%{$sso_env}))) {
672: $extra_env = $sso_env;
673: } elsif ((ref($lti_env) eq 'HASH') && (keys(%{$lti_env}))) {
674: $extra_env = $lti_env;
675: }
676: if (($data{'balancer'}) && ($data{'server'}) && ($data{'balcookie'})) {
677: if (ref($extra_env) eq 'HASH') {
678: $extra_env->{'request.balancercookie'} = $data{'server'}.':'.$data{'balcookie'};
679: } else {
680: $extra_env = { 'request.balancercookie' => $data{'server'}.':'.$data{'balcookie'} };
681: }
682: } elsif (($data{'server'}) && ($data{'otherbalcookie'})) {
683: my ($balancer,$balcookie) = split(/:/,$data{'otherbalcookie'});
684: if (defined(&Apache::lonnet::hostname($balancer)) && $balcookie =~ /^[a-f0-9]{32}$/) {
685: my $baldom = &Apache::lonnet::host_domain($balancer);
686: if (&Apache::lonnet::shared_institution($baldom)) {
687: my $cookieid = join('_',$udom,$data{'username'},$balcookie);
688: &Apache::lonnet::updatebalcookie($cookieid,$balancer,$data{'server'});
689: if (ref($extra_env) eq 'HASH') {
690: $extra_env->{'request.balancercookie'} = $data{'otherbalcookie'};
691: } else {
692: $extra_env = { 'request.balancercookie' => $data{'otherbalcookie'} };
693: }
694: }
695: }
696: }
697:
698: if (($data{'conlost'}) && ($data{'server'})) {
699: my @conlosts = split(/,/,$data{'conlost'});
700: my $switchfrom = $data{'server'};
701: if (@conlosts) {
702: if (grep(/^\Q$switchfrom\E$/,@conlosts)) {
703: &log_switch($r,\%data,$extra_env,$ip);
704: }
705: }
706: }
707:
708: my (%form,$cid);
709: if ($data{'symb'} ne '') {
710: $form{'symb'} = $data{'symb'};
711: }
712: if ($data{'iptoken'} ne '') {
713: $form{'iptoken'} = $data{'iptoken'};
714: }
715: if ($data{'noloadbalance'} ne '') {
716: $form{'noloadbalance'} = $data{'noloadbalance'};
717: }
718: if ($data{'role'}) {
719: if ($data{'role'} =~ m{\./($match_domain)/($match_courseid)(?:/\w+|$)}) {
720: unless (&Apache::lonnet::homeserver($2,$1) eq 'no_host') {
721: $cid = $1.'_'.$2;
722: }
723: }
724: } else {
725: my ($handle,$expirepub);
726: $handle = &Apache::lonnet::check_for_valid_session($r);
727:
728: # For "public user" - remove any existing "public" cookie so actual user is logged in.
729: if ($handle) {
730: if ($handle=~/^publicuser\_/) {
731: my $lonidsdir=$r->dir_config('lonIDsDir');
732: if ($lonidsdir ne '') {
733: unlink("$lonidsdir/$handle.id");
734: }
735: undef($handle);
736: $expirepub = 1;
737: }
738: }
739: if ($handle) {
740: &Apache::lonnet::transfer_profile_to_env($r->dir_config('lonIDsDir'),
741: $handle);
742: my $checklaunch;
743: if ($data{'origurl'} =~ m{^/tiny/$match_domain/\w+$}) {
744: unless ($env{'request.linkprot'} eq $data{'linkprot'}) {
745: $checklaunch = 1;
746: }
747: unless ($env{'request.linkkey'} eq $data{'linkkey'}) {
748: $checklaunch = 1;
749: }
750: unless ($env{'request.deeplink.login'} eq $data{'deeplink.login'}) {
751: $checklaunch = 1;
752: }
753: }
754: if ($data{'linkprot'} ne '') {
755: if (($env{'user.name'} ne $data{'username'}) ||
756: ($env{'user.domain'} ne $data{'domain'})) {
757: my %linkprot_env;
758: foreach my $item ('linkprot','deeplink.login') {
759: if ($data{$item}) {
760: $linkprot_env{$item} = $data{$item};
761: }
762: }
763: &logout($r,$ip,$handle,\%data,undef,\%linkprot_env);
764: return OK;
765: }
766: &Apache::lonnet::appenv({'request.linkprot' => $data{'linkprot'}});
767: if ($env{'request.linkkey'}) {
768: &Apache::lonnet::delenv('request.linkkey');
769: }
770: my ($linkprotector,$deeplink) = split(/:/,$data{'linkprot'},2);
771: if ($env{'user.linkprotector'}) {
772: my @protectors = split(/,/,$env{'user.linkprotector'});
773: unless (grep(/^\Q$linkprotector\E$/,@protectors)) {
774: push(@protectors,$linkprotector);
775: @protectors = sort { $a <=> $b } @protectors;
776: &Apache::lonnet::appenv({'user.linkprotector' => join(',',@protectors)});
777: }
778: } else {
779: &Apache::lonnet::appenv({'user.linkprotector' => $linkprotector });
780: }
781: if ($env{'user.linkproturi'}) {
782: my @proturis = split(/,/,$env{'user.linkproturi'});
783: unless(grep(/^\Q$deeplink\E$/,@proturis)) {
784: push(@proturis,$deeplink);
785: @proturis = sort @proturis;
786: &Apache::lonnet::appenv({'user.linkproturi' => join(',',@proturis)});
787: }
788: } else {
789: &Apache::lonnet::appenv({'user.linkproturi' => $deeplink});
790: }
791: } elsif ($data{'linkkey'} ne '') {
792: &Apache::lonnet::appenv({'request.linkkey' => $data{'linkkey'}});
793: if ($env{'request.linkprot'}) {
794: &Apache::lonnet::delenv('request.linkprot');
795: }
796: my $deeplink = $data{'deeplink.login'};
797: my $linkkey = $data{'linkkey'};
798: if ($env{'user.deeplinkkey'} ne '') {
799: my @linkkeys = split(/,/,$env{'user.deeplinkkey'});
800: unless (grep(/^\Q$linkkey\E$/,@linkkeys)) {
801: push(@linkkeys,$linkkey);
802: &Apache::lonnet::appenv({'user.deeplinkkey' => join(',',sort(@linkkeys))});
803: }
804: } else {
805: &Apache::lonnet::appenv({'user.deeplinkkey' => $linkkey});
806: }
807: if ($deeplink) {
808: if ($env{'user.keyedlinkuri'}) {
809: my @keyeduris = split(/,/,$env{'user.keyedlinkuri'});
810: unless (grep(/^\Q$deeplink\E$/,@keyeduris)) {
811: push(@keyeduris,$deeplink);
812: &Apache::lonnet::appenv({'user.keyedlinkuri' => join(',',sort(@keyeduris))});
813: }
814: } else {
815: &Apache::lonnet::appenv({'user.keyedlinkuri' => $deeplink});
816: }
817: }
818: }
819: if ($data{'deeplink.login'}) {
820: &Apache::lonnet::appenv({'request.deeplink.login' => $data{'deeplink.login'}});
821: }
822: if ($data{'lti.login'}) {
823: my $needslogout;
824: if ($env{'request.lti.login'}) {
825: if (($env{'user.name'} ne $data{'username'}) ||
826: ($env{'user.domain'} ne $data{'domain'})) {
827: $needslogout = 1;
828: }
829: } else {
830: $needslogout = 1;
831: }
832: # If access is via LTI, and user already has a non-LTI session cookie
833: # (and session) or has an LTI session cookie for a different username,
834: # logout the existing session, and start a new one
835: if ($needslogout) {
836: &logout($r,$ip,$handle,\%data,$lti_env);
837: } elsif (($data{'lti.reqcrs'}) && ($data{'lti.reqrole'} eq 'cc')) {
838: $form{'lti.reqcrs'} = $data{'lti.reqcrs'};
839: $form{'lti.reqrole'} = $data{'lti.reqrole'};
840: $form{'lti.sourcecrs'} = $data{'lti.sourcecrs'};
841: $form{'lti.uri'} = $data{'lti.uri'};
842: if ($data{'lti.passbackid'}) {
843: $form{'lti.passbackid'} = $data{'lti.passbackid'};
844: }
845: if ($data{'lti.passbackurl'}) {
846: $form{'lti.passbackurl'} = $data{'lti.passbackurl'};
847: }
848: if ($data{'lti.rosterid'}) {
849: $form{'lti.rosterid'} = $data{'lti.rosterid'};
850: }
851: if ($data{'lti.rosterurl'}) {
852: $form{'lti.rosterurl'} = $data{'lti.rosterurl'};
853: }
854: if ($data{'lti.target'}) {
855: $form{'lti.target'} = $data{'lti.target'};
856: }
857: &Apache::loncommon::content_type($r,'text/html');
858: $r->send_http_header;
859: &Apache::ltiauth::lti_reqcrs($r,$data{'domain'},\%form,$data{'username'},$data{'domain'});
860: } else {
861: if (ref($lti_env) eq 'HASH') {
862: delete($lti_env->{'reqcrs'});
863: delete($lti_env->{'reqrole'});
864: delete($lti_env->{'selfenrollrole'});
865: }
866: if ($data{'lti.selfenrollrole'}) {
867: if (&Apache::ltiauth::lti_enroll($data{'username'},$data{'domain'},
868: $data{'lti.selfenrollrole'}) eq 'ok') {
869: my $url = '/adm/roles?selectrole=1&'.
870: &escape($data{'lti.selfenrollrole'}).'=1';
871: if ($data{'origurl'} =~ m{/default_\d+\.sequence$}) {
872: $url .= '&orgurl='.$data{'origurl'}.'&navmap=1';
873: } elsif ($data{'origurl'} ne '') {
874: $url .= '&orgurl='.$data{'origurl'};
875: }
876: if (ref($lti_env) eq 'HASH') {
877: &Apache::lonnet::appenv($lti_env);
878: }
879: $r->internal_redirect($url);
880: } else {
881: &Apache::ltiauth::invalid_request($r,23);
882: }
883: } elsif ($data{'origurl'} ne '') {
884: my $url = $data{'origurl'};
885: if ($url =~ m{/default_\d+\.sequence$}) {
886: $url .= (($url =~/\?/)?'&':'?').'navmap=1';
887: }
888: if (ref($lti_env) eq 'HASH') {
889: &Apache::lonnet::appenv($lti_env);
890: }
891: $r->internal_redirect($url);
892: } else {
893: if (ref($lti_env) eq 'HASH') {
894: &Apache::lonnet::appenv($lti_env);
895: }
896: }
897: }
898: } elsif ($data{'origurl'} ne '') {
899: my $dest = $data{'origurl'};
900: if (($env{'request.deeplink.login'} eq $data{'origurl'}) &&
901: (($env{'request.linkprot'}) || ($env{'request.linkkey'} ne ''))) {
902: my %info;
903: if ($env{'request.linkprot'}) {
904: $info{'linkprot'} = $env{'request.linkprot'};
905: foreach my $item ('linkprotuser','linkprotexit') {
906: if ($data{$item}) {
907: $info{$item} = $data{$item};
908: }
909: }
910: } elsif ($env{'request.linkkey'} ne '') {
911: $info{'linkkey'} = $env{'request.linkkey'};
912: }
913: $info{'origurl'} = $data{'origurl'};
914: if ($checklaunch) {
915: $info{'checklaunch'} = 1;
916: }
917: my $token = &Apache::lonnet::tmpput(\%info,$r->dir_config('lonHostID'),'link');
918: unless (($token eq 'con_lost') || ($token eq 'refused') || ($token =~ /^error:/) ||
919: ($token eq 'unknown_cmd') || ($token eq 'no_such_host')) {
920: $dest .= (($dest =~ /\?/) ? '&' : '?') . 'ttoken='.$token;
921: }
922: }
923: $r->internal_redirect($dest);
924: } elsif ($env{'request.course.id'}) {
925: $r->internal_redirect('/adm/navmaps');
926: } else {
927: $r->internal_redirect('/adm/roles');
928: }
929: } else {
930: my $desturl = '/adm/roles';
931: if ($data{'lti.login'}) {
932: if ($data{'lti.selfenrollrole'}) {
933: $desturl .= '?selectrole=1&'.
934: &escape($data{'lti.selfenrollrole'}).'=1';
935: if ($data{'origurl'} ne '') {
936: $desturl .= '&orgurl='.$data{'origurl'};
937: if ($data{'origurl'} =~ m{/default_\d+\.sequence$}) {
938: $desturl .= '&navmap=1';
939: }
940: }
941: } elsif ($data{'origurl'} ne '') {
942: $desturl = $data{'origurl'};
943: if ($desturl =~ m{/default_\d+\.sequence$}) {
944: $desturl .= (($desturl =~/\?/)?'&':'?').'navmap=1';
945: }
946: }
947: } elsif ($data{'origurl'} ne '') {
948: $desturl = $data{'origurl'};
949: if ($data{'linkprot'}) {
950: my ($linkprotector,$linkuri) = split(/:/,$data{'linkprot'},2);
951: if ($linkprotector) {
952: if (ref($extra_env) eq 'HASH') {
953: $extra_env->{'user.linkprotector'} = $linkprotector;
954: $extra_env->{'user.linkproturi'} = $linkuri;
955: $extra_env->{'request.linkprot'} = $data{'linkprot'};
956: } else {
957: $extra_env = {'user.linkprotector' => $linkprotector,
958: 'user.linkproturi' => $linkuri,
959: 'request.linkprot' => $data{'linkprot'}};
960: }
961: }
962: foreach my $item ('linkprotuser','linkprotexit') {
963: if ($data{$item} ne '') {
964: $form{$item} = $data{$item};
965: }
966: }
967: } elsif ($data{'linkkey'} ne '') {
968: if (ref($extra_env) eq 'HASH') {
969: $extra_env->{'user.deeplinkkey'} = $data{'linkkey'};
970: $extra_env->{'user.keyedlinkuri'} = $data{'deeplink.login'};
971: $extra_env->{'request.linkkey'} = $data{'linkkey'};
972: } else {
973: $extra_env = {'user.deeplinkkey' => $data{'linkkey'},
974: 'user.keyedlinkuri' => $data{'deeplink.login'},
975: 'request.linkkey' => $data{'linkkey'}};
976: }
977: }
978: if ($data{'deeplink.login'}) {
979: if (ref($extra_env) eq 'HASH') {
980: $extra_env->{'request.deeplink.login'} = $data{'deeplink.login'};
981: } else {
982: $extra_env = {'request.deeplink.login' => $data{'deeplink.login'}};
983: }
984: }
985: }
986: my $skipcritical;
987: if ($data{'lti.login'}) {
988: if ((($data{'lti.reqcrs'}) &&
989: ($data{'lti.reqrole'} eq 'cc')) ||
990: ($data{'lti.selfenrollrole'})) {
991: $skipcritical = 1;
992: }
993: }
994: &Apache::lonauth::success($r,$data{'username'},$data{'domain'},
995: $home,$desturl,$extra_env,\%form,$skipcritical,'',
996: $expirepub);
997: }
998: return OK;
999: }
1000:
1001: if ($data{'lti.login'}) {
1002: my $handle = &Apache::lonnet::check_for_valid_session($r);
1003: if ($handle) {
1004: &Apache::lonnet::transfer_profile_to_env($r->dir_config('lonIDsDir'),
1005: $handle);
1006: my $needslogout;
1007: if ($env{'request.lti.login'}) {
1008: if (($env{'user.name'} ne $data{'username'}) ||
1009: ($env{'user.domain'} ne $data{'domain'})) {
1010: $needslogout = 1;
1011: }
1012: } else {
1013: $needslogout = 1;
1014: }
1015: if ($needslogout) {
1016: &logout($r,$ip,$handle,\%data,$lti_env);
1017: return OK;
1018: }
1019: }
1020: }
1021:
1022: # check if current user, and role match those expected.
1023: my ($next_url,$reuse_session);
1024: if (($env{'user.name'} eq $data{'username'}) && ($env{'user.domain'} eq $data{'domain'}) &&
1025: ($env{'request.role'} eq $data{'role'}) && ($data{'origurl'} ne '')) {
1026: $next_url = $data{'origurl'};
1027: $reuse_session = 1;
1028: } elsif ($data{'origurl'} =~ m{^/tiny/$match_domain/\w+$}) {
1029: $next_url=$data{'origurl'};
1030: } else {
1031: if ($data{'lti.login'}) {
1032: $next_url='/adm/roles?selectrole=1&'.&escape($data{'role'}).'=1';
1033: if ($data{'origurl'} ne '') {
1034: $next_url .= '&orgurl='.&escape($data{'origurl'});
1035: }
1036: } else {
1037: $next_url='/adm/roles?selectrole=1&'.&escape($data{'role'}).'=1';
1038: if ($data{'origurl'} ne '') {
1039: $next_url .= '&orgurl='.&escape($data{'origurl'});
1040: }
1041: }
1042: }
1043: if ($data{'lti.login'}) {
1044: if (($data{'origurl'} =~ m{/default_\d+\.sequence$}) ||
1045: ($data{'origurl'} =~ m{^/res/.+\.sequence$})) {
1046: if ($reuse_session) {
1047: $next_url .= '&navmap=1';
1048: } else {
1049: $next_url .= '&navmap=1';
1050: }
1051: }
1052: }
1053: if ($reuse_session) {
1054: $r->internal_redirect($next_url);
1055: } else {
1056: if ($data{'deeplink.login'}) {
1057: if (ref($extra_env) eq 'HASH') {
1058: $extra_env->{'request.deeplink.login'} = $data{'deeplink.login'};
1059: } else {
1060: $extra_env = {'request.deeplink.login' => $data{'deeplink.login'}};
1061: }
1062: if ($data{'linkprot'}) {
1063: $extra_env->{'request.linkprot'} = $data{'linkprot'};
1064: foreach my $item ('linkprotuser','linkprotexit') {
1065: if ($data{$item}) {
1066: $form{'request.'.$item} = $data{$item};
1067: }
1068: }
1069: } elsif ($data{'linkkey'} ne '') {
1070: $extra_env->{'request.linkkey'} = $data{'linkkey'};
1071: }
1072: }
1073: &Apache::lonauth::success($r,$data{'username'},$data{'domain'},$home,
1074: $next_url,$extra_env,\%form,'',$cid);
1075: }
1076: return OK;
1077: }
1078:
1079: 1;
1080: __END__
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