1: # The LearningOnline Network
2: # Starts a user off based of an existing token.
3: #
4: # $Id: migrateuser.pm,v 1.28 2018/04/14 01:50:43 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);
34: use Apache::lonauth;
35: use Apache::lonnet;
36: use Apache::lonlocal;
37: use Apache::lonlogin();
38: use Apache::ltiauth;
39: use CGI::Cookie;
40:
41: sub goto_login {
42: my ($r,$domain,$data) = @_;
43: if ((ref($data) eq 'HASH') && ($data->{'lti.login'})) {
44: &Apache::ltiauth::invalid_request($r,'22');
45: } else {
46: &Apache::loncommon::content_type($r,'text/html');
47: $r->send_http_header;
48: my $url = '/adm/login';
49: if ($domain) {
50: $url .= '?domain='.$domain;
51: }
52: $r->print(&Apache::loncommon::start_page('Going to login',undef,
53: {'redirect' => [0,$url],}).
54: '<h1>'.&mt('One moment please...').'</h1>'.
55: '<p>'.&mt('Transferring to login page.').'</p>'.
56: &Apache::loncommon::end_page());
57: }
58: return OK;
59: }
60:
61: sub sso_check {
62: my ($data) = @_;
63: my %extra_env;
64: if (ref($data) eq 'HASH') {
65: if ($data->{'sso.login'}) {
66: $extra_env{'request.sso.login'} = $data->{'sso.login'};
67: }
68: if ($data->{'sso.reloginserver'}) {
69: $extra_env{'request.sso.reloginserver'} =
70: $data->{'sso.reloginserver'};
71: }
72: }
73: return \%extra_env;
74: }
75:
76: sub lti_check {
77: my ($data) = @_;
78: my %lti_env;
79: if (ref($data) eq 'HASH') {
80: if ($data->{'lti.login'}) {
81: $lti_env{'request.lti.login'} = $data->{'lti.login'};
82: if ($data->{'lti.reqcrs'}) {
83: $lti_env{'request.lti.reqcrs'} = $data->{'lti.reqcrs'};
84: }
85: if ($data->{'lti.reqrole'}) {
86: $lti_env{'request.lti.reqrole'} = $data->{'lti.reqrole'};
87: }
88: if ($data->{'lti.selfenrollrole'}) {
89: $lti_env{'request.lti.selfenrollrole'} = $data->{'lti.selfenrollrole'};
90: }
91: }
92: if ($data->{'lti.passbackid'}) {
93: $lti_env{'request.lti.passbackid'} = $data->{'lti.passbackid'};
94: }
95: if ($data->{'lti.passbackurl'}) {
96: $lti_env{'request.lti.passbackurl'} = $data->{'lti.passbackurl'};
97: }
98: if ($data->{'lti.rosterid'}) {
99: $lti_env{'request.lti.rosterid'} = $data->{'lti.rosterid'};
100: }
101: if ($data->{'lti.rosterurl'}) {
102: $lti_env{'request.lti.rosterurl'} = $data->{'lti.rosterurl'};
103: }
104: }
105: return \%lti_env;
106: }
107:
108: sub ip_changed {
109: my ($r,$udom,$camefrom,$dataref) = @_;
110: &Apache::loncommon::content_type($r,'text/html');
111: $r->send_http_header;
112: if (ref($dataref) eq 'HASH') {
113: my $title = 'LON-CAPA Session redirected';
114: my $message = &mt('Your internet address has changed since you logged in.');
115: my $rule_in_effect;
116: if ($dataref->{'balancer'}) {
117: my $baldom = &Apache::lonnet::host_domain($camefrom);
118: my $balprimaryid = &Apache::lonnet::domain($baldom,'primary');
119: my $balintdom = &Apache::lonnet::internet_dom($balprimaryid);
120: my $uprimaryid = &Apache::lonnet::domain($udom,'primary');
121: my $uintdom = &Apache::lonnet::internet_dom($uprimaryid);
122: my $dom_in_use;
123: if (($uintdom ne '') && ($uintdom eq $balintdom)) {
124: $dom_in_use = $udom;
125: } else {
126: $dom_in_use = $baldom;
127: }
128: my ($result,$cached)=&Apache::lonnet::is_cached_new('loadbalancing',$dom_in_use);
129: unless (defined($cached)) {
130: my $cachetime = 60*60*24;
131: my %domconfig =
132: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$dom_in_use);
133: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
134: $result = &Apache::lonnet::do_cache_new('loadbalancing',$dom_in_use,
135: $domconfig{'loadbalancing'},$cachetime);
136: }
137: }
138: if (ref($result) eq 'HASH') {
139: (undef,my $currtargets,my $currrules) =
140: &Apache::lonnet::check_balancer_result($result,$dataref->{'server'});
141: if (ref($currrules) eq 'HASH') {
142: if ($dataref->{'sso.login'}) {
143: if ($currrules->{'_LC_ipchangesso'} ne '') {
144: $rule_in_effect = $currrules->{'_LC_ipchangesso'};
145: }
146: } else {
147: if ($currrules->{'_LC_ipchange'} ne '') {
148: $rule_in_effect = $currrules->{'_LC_ipchange'};
149: }
150: }
151: }
152: }
153: }
154: my $url;
155: my $lonhost= $r->dir_config('lonHostID');
156: my $switchto = $lonhost;
157: if ($rule_in_effect ne 'offloadedto') {
158: my $hosthere;
159: my @ids=&Apache::lonnet::current_machine_ids();
160: unless ($rule_in_effect eq 'balancer') {
161: if (grep(/^\Q$rule_in_effect\E$/,@ids)) {
162: $hosthere = 1;
163: }
164: }
165: unless ($hosthere) {
166: if ($dataref->{'role'}) {
167: my ($adom,$aname);
168: if ($dataref->{'role'} =~ m{^au\./($match_domain)/$}) {
169: $adom = $1;
170: $aname = $dataref->{'username'};
171: } elsif ($dataref->{'role'} =~ m{^(?:ca|aa)\./($match_domain)/($match_username)$}) {
172: $adom = $1;
173: $aname = $2;
174: }
175: if ($adom ne '' && $aname ne '') {
176: my $ahome = &Apache::lonnet::homeserver($aname,$adom);
177: unless ($ahome eq 'no_host') {
178: if ($ahome && grep(/^\Q$ahome\E$/,@ids)) {
179: $hosthere = 1;
180: }
181: }
182: }
183: }
184: }
185: unless ($hosthere) {
186: my $hostname;
187: if ($rule_in_effect eq 'balancer') {
188: $hostname = &Apache::lonnet::hostname($dataref->{'server'});
189: if ($hostname) {
190: $switchto = $dataref->{'server'};
191: }
192: } else {
193: $hostname = &Apache::lonnet::hostname($rule_in_effect);
194: if ($hostname) {
195: $switchto = $rule_in_effect;
196: }
197: }
198: if ($hostname) {
199: my $protocol = $Apache::lonnet::protocol{$switchto};
200: $protocol = 'http' if ($protocol ne 'https');
201: $url = $protocol.'://'.$hostname;
202: if ($rule_in_effect eq 'balancer') {
203: $message .= '<br />'.
204: &mt('As a result, your LON-CAPA session is being redirected to the server where you originally logged in.');
205: } else {
206: $message .= '<br />'.
207: &mt('As a result, your LON-CAPA session is being redirected.');
208: }
209: }
210: }
211: }
212: if ($dataref->{'sso.login'}) {
213: $url .= '/adm/roles';
214: } else {
215: $url .= '/adm/login';
216: if ($udom) {
217: $url .= '?domain='.$udom;
218: }
219: $message .= '<br />'.&mt('You will need to provide your password one more time.');
220: }
221: my %info= (
222: 'domain' => $udom,
223: 'username' => $dataref->{'username'},
224: 'role' => $dataref->{'role'},
225: 'sessionserver' => $lonhost,
226: );
227: if ($dataref->{'origurl'}) {
228: $info{'origurl'} = $dataref->{'origurl'};
229: }
230: if ($dataref->{'symb'}) {
231: $info{'symb'} = $dataref->{'symb'};
232: }
233: my $iptoken = &Apache::lonnet::tmpput(\%info,$switchto);
234: unless ($iptoken eq 'conlost') {
235: $url .= ($url =~ /\?/) ? '&' : '?';
236: $url .= 'iptoken='.$iptoken;
237: }
238: $r->print(&Apache::loncommon::start_page($title,undef,
239: {'redirect' =>
240: [2,$url],}).
241: '<h1>'.&mt('One moment please...').'</h1>'.
242: '<p class="LC_warning">'.$message.'</p>'.
243: &Apache::loncommon::end_page());
244: } else {
245: return &goto_login($r);
246: }
247: return OK;
248: }
249:
250: sub logout {
251: my ($r,$handle,$data,$lti_env) = @_;
252: unlink($handle);
253: if ($env{'user.linkedenv'} ne '') {
254: my $lonidsdir=$r->dir_config('lonIDsDir');
255: if ((-l $env{'user.linkedenv'}) &&
256: (readlink($env{'user.linkedenv'}) eq "$lonidsdir/$handle.id")) {
257: unlink($env{'user.linkedenv'});
258: }
259: }
260: my %temp=('logout' => time);
261: &Apache::lonnet::put('email_status',\%temp);
262: &Apache::lonnet::log($env{'user.domain'},
263: $env{'user.name'},
264: $env{'user.home'},
265: "Logout $ENV{'REMOTE_ADDR'}");
266:
267: &Apache::loncommon::content_type($r,'text/html');
268:
269: #expire the cookie
270: my $c = new CGI::Cookie(-name => 'lonID',
271: -value => '',
272: -expires => '-10y',);
273: $r->headers_out->add('Set-cookie' => $c);
274: if ($env{'user.linkedenv'}) {
275: my $linked = new CGI::Cookie(-name => 'lonLinkID',
276: -value => '',
277: -expires => '-10y',);
278: $r->headers_out->add('Set-cookie' => $linked);
279: }
280: my $lonhost = $r->dir_config('lonHostID');
281: my (%info,%user_info,%lti_info);
282: if (ref($lti_env) eq 'HASH') {
283: %lti_info = %{$lti_env};
284: }
285: my $lonhost = $r->dir_config('lonHostID');
286: if (ref($data) eq 'HASH') {
287: %user_info=('ip' => $ENV{'REMOTE_ADDR'},
288: 'domain' => $data->{'domain'},
289: 'username' => $data->{'username'},
290: 'role' => $data->{'role'},
291: 'origurl' => $data->{'origurl'},
292: 'symb' => $data->{'symb'},
293: 'server' => $lonhost);
294: }
295: %info = (%user_info,%lti_info);
296: my $token = &Apache::lonnet::tmpput(\%info,$lonhost);
297: my $url = '/adm/migrateuser?token='.$token;
298: $r->send_http_header;
299: $r->print(
300: &Apache::loncommon::start_page('Updating Session ...',undef,
301: {'redirect' => [0.1,$url],
302: 'only_body' => 1,}).
303: &Apache::loncommon::end_page());
304: $r->register_cleanup(\&flush_course_logs);
305: return;
306: }
307:
308: sub flush_course_logs {
309: &Apache::lonnet::flushcourselogs();
310: return OK;
311: }
312:
313: sub handler {
314: my ($r) = @_;
315:
316: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['token']);
317: my %data = &Apache::lonnet::tmpget($env{'form.token'});
318: if (keys(%data) == 0) {
319: return &goto_login($r);
320: }
321: my $delete = &Apache::lonnet::tmpdel($env{'form.token'});
322:
323: &Apache::lonlocal::get_language_handle($r);
324:
325: if ($delete ne 'ok') {
326: return &goto_login($r,undef,\%data);
327: }
328:
329: if (!defined($data{'username'}) || !defined($data{'domain'})) {
330: return &goto_login($r,undef,\%data);
331: }
332: if ($data{'ip'} ne $ENV{'REMOTE_ADDR'}) {
333: &Apache::lonnet::logthis('IP change when session migration requested -- was: '.
334: $data{'ip'}.'; now: '.$ENV{'REMOTE_ADDR'}.' for '.$data{'username'}.':'.$data{'domain'});
335: return &ip_changed($r,$data{'domain'},$data{'server'},\%data);
336: }
337:
338: &Apache::lonnet::logthis("Allowing access for $data{'username'}:$data{'domain'} to $data{'role'}");
339: my $home=&Apache::lonnet::homeserver($data{'username'},$data{'domain'});
340: my $udom;
341: if (&Apache::lonnet::domain($data{'domain'})) {
342: $udom=$data{'domain'};
343: }
344: if ($home =~ /(con_lost|no_such_host)/) { return &goto_login($r,$udom,\%data); }
345:
346: my $sso_env = &sso_check(\%data);
347: my $lti_env = <i_check(\%data);
348:
349: my $extra_env;
350: if ((ref($sso_env) eq 'HASH') && (keys(%{$sso_env}))) {
351: $extra_env = $sso_env;
352: } elsif ((ref($lti_env) eq 'HASH') && (keys(%{$lti_env}))) {
353: $extra_env = $lti_env;
354: }
355:
356: my %form;
357: if ($data{'symb'} ne '') {
358: $form{'symb'} = $data{'symb'};
359: }
360: if ($data{'iptoken'} ne '') {
361: $form{'iptoken'} = $data{'iptoken'};
362: }
363: if ($data{'noloadbalance'} ne '') {
364: $form{'noloadbalance'} = $data{'noloadbalance'};
365: }
366:
367: if (!$data{'role'}) {
368: my $handle = &Apache::lonnet::check_for_valid_session($r);
369: if ($handle) {
370: &Apache::lonnet::transfer_profile_to_env($r->dir_config('lonIDsDir'),
371: $handle);
372: if ($data{'lti.login'}) {
373: my $needslogout;
374: if ($env{'request.lti.login'}) {
375: if (($env{'user.name'} ne $data{'username'}) ||
376: ($env{'user.domain'} ne $data{'domain'})) {
377: $needslogout = 1;
378: }
379: } else {
380: $needslogout = 1;
381: }
382: # If access is via LTI, and user already has a non-LTI session cookie
383: # (and session) or has an LTI session cookie for a different username,
384: # logout the existing session, and start a new one
385: if ($needslogout) {
386: &logout($r,$handle,\%data,$lti_env);
387: } elsif (($data{'lti.reqcrs'}) && ($data{'lti.reqrole'} eq 'cc')) {
388: $form{'lti.reqcrs'} = $data{'lti.reqcrs'};
389: $form{'lti.reqrole'} = $data{'lti.reqrole'};
390: $form{'lti.sourcecrs'} = $data{'lti.sourcecrs'};
391: if ($data{'lti.passbackid'}) {
392: $form{'lti.passbackid'} = $data{'lti.passbackid'};
393: }
394: if ($data{'lti.passbackurl'}) {
395: $form{'lti.passbackurl'} = $data{'lti.passbackurl'};
396: }
397: if ($data{'lti.rosterid'}) {
398: $form{'lti.rosterid'} = $data{'lti.rosterid'};
399: }
400: if ($data{'lti.rosterurl'}) {
401: $form{'lti.rosterurl'} = $data{'lti.rosterurl'};
402: }
403: &Apache::loncommon::content_type($r,'text/html');
404: $r->send_http_header;
405: &Apache::ltiauth::lti_reqcrs($r,$data{'domain'},\%form,$data{'username'},$data{'domain'});
406: } else {
407: if (ref($lti_env) eq 'HASH') {
408: delete($lti_env->{'reqcrs'});
409: delete($lti_env->{'reqrole'});
410: delete($lti_env->{'selfenrollrole'});
411: }
412: if ($data{'lti.selfenrollrole'}) {
413: if (&Apache::ltiauth::lti_enroll($data{'username'},data{'domain'},
414: $data{'lti.selfenrollrole'}) eq 'ok') {
415: my $url = '/adm/roles?selectrole=1&'.
416: &escape($data{'lti.selfenrollrole'}).'=1';
417: if ($data{'origurl'} =~ m{/default_\d+\.sequence$}) {
418: $url .= '&orgurl='.$data{'origurl'}.'&navmap=1';
419: } elsif ($data{'origurl'} ne '') {
420: $url .= '&orgurl='.$data{'origurl'};
421: }
422: if (ref($lti_env) eq 'HASH') {
423: &Apache::lonnet::appenv($lti_env);
424: }
425: $r->internal_redirect($url);
426: } else {
427: &Apache::ltiauth::invalid_request($r,23);
428: }
429: } elsif ($data{'origurl'} ne '') {
430: my $url = $data{'origurl'};
431: if ($url =~ m{/default_\d+\.sequence$}) {
432: $url .= (($url =~/\?/)?'&':'?').'navmap=1';
433: }
434: if (ref($lti_env) eq 'HASH') {
435: &Apache::lonnet::appenv($lti_env);
436: }
437: $r->internal_redirect($url);
438: } else {
439: if (ref($lti_env) eq 'HASH') {
440: &Apache::lonnet::appenv($lti_env);
441: }
442: }
443: }
444: } elsif ($data{'origurl'} ne '') {
445: $r->internal_redirect($data{'origurl'});
446: } elsif ($env{'request.course.id'}) {
447: $r->internal_redirect('/adm/navmaps');
448: } else {
449: $r->internal_redirect('/adm/roles');
450: }
451: } else {
452: my $desturl = '/adm/roles';
453: if ($data{'origurl'} ne '') {
454: $desturl = $data{'origurl'};
455: if ($data{'lti.login'}) {
456: $desturl = $data{'origurl'};
457: if ($desturl =~ m{/default_\d+\.sequence$}) {
458: $desturl .= (($desturl =~/\?/)?'&':'?').'navmap=1';
459: }
460: }
461: }
462: my $skipcritical;
463: if (($data{'lti.login'}) && ($data{'lti.reqcrs'}) &&
464: ($data{'lti.reqrole'} eq 'cc')) {
465: $skipcritical = 1;
466: }
467: &Apache::lonauth::success($r,$data{'username'},$data{'domain'},
468: $home,$desturl,$extra_env,\%form,$skipcritical);
469: }
470: return OK;
471: }
472:
473: my $next_url='/adm/roles?selectrole=1&'.&escape($data{'role'}).'=1';
474: if ($data{'origurl'} ne '') {
475: $next_url .= '&orgurl='.&escape($data{'origurl'});
476: }
477: &Apache::lonauth::success($r,$data{'username'},$data{'domain'},$home,
478: $next_url,$extra_env,\%form);
479: return OK;
480: }
481:
482: 1;
483: __END__
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