1: # The LearningOnline Network
2: # Starts a user off based of an existing token.
3: #
4: # $Id: migrateuser.pm,v 1.25.2.2 2020/05/02 17:35:40 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:
39: sub goto_login {
40: my ($r,$domain) = @_;
41: &Apache::loncommon::content_type($r,'text/html');
42: $r->send_http_header;
43: my $url = '/adm/login';
44: if ($domain) {
45: $url .= '?domain='.$domain;
46: }
47: $r->print(&Apache::loncommon::start_page('Going to login',undef,
48: {'redirect' => [0,$url],}).
49: '<h1>'.&mt('One moment please...').'</h1>'.
50: '<p>'.&mt('Transferring to login page.').'</p>'.
51: &Apache::loncommon::end_page());
52: return OK;
53: }
54:
55:
56: sub sso_check {
57: my ($data) = @_;
58: my %extra_env;
59: if (ref($data) eq 'HASH') {
60: if ($data->{'sso.login'}) {
61: $extra_env{'request.sso.login'} = $data->{'sso.login'};
62: }
63: if ($data->{'sso.reloginserver'}) {
64: $extra_env{'request.sso.reloginserver'} =
65: $data->{'sso.reloginserver'};
66: }
67: }
68: return \%extra_env;
69: }
70:
71: sub ip_changed {
72: my ($r,$udom,$camefrom,$dataref) = @_;
73: &Apache::loncommon::content_type($r,'text/html');
74: $r->send_http_header;
75: if (ref($dataref) eq 'HASH') {
76: my $title = 'LON-CAPA Session redirected';
77: my $message = &mt('Your internet address has changed since you logged in.');
78: my $rule_in_effect;
79: if ($dataref->{'balancer'}) {
80: my $baldom = &Apache::lonnet::host_domain($camefrom);
81: my $balprimaryid = &Apache::lonnet::domain($baldom,'primary');
82: my $balintdom = &Apache::lonnet::internet_dom($balprimaryid);
83: my $uprimaryid = &Apache::lonnet::domain($udom,'primary');
84: my $uintdom = &Apache::lonnet::internet_dom($uprimaryid);
85: my $dom_in_use;
86: if (($uintdom ne '') && ($uintdom eq $balintdom)) {
87: $dom_in_use = $udom;
88: } else {
89: $dom_in_use = $baldom;
90: }
91: my ($result,$cached)=&Apache::lonnet::is_cached_new('loadbalancing',$dom_in_use);
92: unless (defined($cached)) {
93: my $cachetime = 60*60*24;
94: my %domconfig =
95: &Apache::lonnet::get_dom('configuration',['loadbalancing'],$dom_in_use);
96: if (ref($domconfig{'loadbalancing'}) eq 'HASH') {
97: $result = &Apache::lonnet::do_cache_new('loadbalancing',$dom_in_use,
98: $domconfig{'loadbalancing'},$cachetime);
99: }
100: }
101: if (ref($result) eq 'HASH') {
102: (undef,my $currtargets,my $currrules) =
103: &Apache::lonnet::check_balancer_result($result,$dataref->{'server'});
104: if (ref($currrules) eq 'HASH') {
105: if ($dataref->{'sso.login'}) {
106: if ($currrules->{'_LC_ipchangesso'} ne '') {
107: $rule_in_effect = $currrules->{'_LC_ipchangesso'};
108: }
109: } else {
110: if ($currrules->{'_LC_ipchange'} ne '') {
111: $rule_in_effect = $currrules->{'_LC_ipchange'};
112: }
113: }
114: }
115: }
116: }
117: my $url;
118: my $lonhost= $r->dir_config('lonHostID');
119: my $switchto = $lonhost;
120: if ($rule_in_effect ne 'offloadedto') {
121: my $hosthere;
122: my @ids=&Apache::lonnet::current_machine_ids();
123: unless ($rule_in_effect eq 'balancer') {
124: if (grep(/^\Q$rule_in_effect\E$/,@ids)) {
125: $hosthere = 1;
126: }
127: }
128: unless ($hosthere) {
129: if ($dataref->{'role'}) {
130: my ($adom,$aname);
131: if ($dataref->{'role'} =~ m{^au\./($match_domain)/$}) {
132: $adom = $1;
133: $aname = $dataref->{'username'};
134: } elsif ($dataref->{'role'} =~ m{^(?:ca|aa)\./($match_domain)/($match_username)$}) {
135: $adom = $1;
136: $aname = $2;
137: }
138: if ($adom ne '' && $aname ne '') {
139: my $ahome = &Apache::lonnet::homeserver($aname,$adom);
140: unless ($ahome eq 'no_host') {
141: if ($ahome && grep(/^\Q$ahome\E$/,@ids)) {
142: $hosthere = 1;
143: }
144: }
145: }
146: }
147: }
148: unless ($hosthere) {
149: my $hostname;
150: if ($rule_in_effect eq 'balancer') {
151: $hostname = &Apache::lonnet::hostname($dataref->{'server'});
152: if ($hostname) {
153: $switchto = $dataref->{'server'};
154: }
155: } else {
156: $hostname = &Apache::lonnet::hostname($rule_in_effect);
157: if ($hostname) {
158: $switchto = $rule_in_effect;
159: }
160: }
161: if ($hostname) {
162: my $protocol = $Apache::lonnet::protocol{$switchto};
163: $protocol = 'http' if ($protocol ne 'https');
164: $url = $protocol.'://'.$hostname;
165: if ($rule_in_effect eq 'balancer') {
166: $message .= '<br />'.
167: &mt('As a result, your LON-CAPA session is being redirected to the server where you originally logged in.');
168: } else {
169: $message .= '<br />'.
170: &mt('As a result, your LON-CAPA session is being redirected.');
171: }
172: }
173: }
174: unless ($hosthere) {
175: if (($dataref->{'balancer'}) && ($dataref->{'balcookie'})) {
176: &Apache::lonnet::delbalcookie($dataref->{'balcookie'},$dataref->{'balancer'});
177: }
178: }
179: }
180: if ($dataref->{'sso.login'}) {
181: $url .= '/adm/roles';
182: } else {
183: $url .= '/adm/login';
184: if ($udom) {
185: $url .= '?domain='.$udom;
186: }
187: $message .= '<br />'.&mt('You will need to provide your password one more time.');
188: }
189: my %info= (
190: 'domain' => $udom,
191: 'username' => $dataref->{'username'},
192: 'role' => $dataref->{'role'},
193: 'sessionserver' => $lonhost,
194: );
195: if ($dataref->{'origurl'}) {
196: $info{'origurl'} = $dataref->{'origurl'};
197: }
198: if ($dataref->{'symb'}) {
199: $info{'symb'} = $dataref->{'symb'};
200: }
201: my $iptoken = &Apache::lonnet::tmpput(\%info,$switchto);
202: unless ($iptoken eq 'conlost') {
203: $url .= ($url =~ /\?/) ? '&' : '?';
204: $url .= 'iptoken='.$iptoken;
205: }
206: $r->print(&Apache::loncommon::start_page($title,undef,
207: {'redirect' =>
208: [2,$url],}).
209: '<h1>'.&mt('One moment please...').'</h1>'.
210: '<p class="LC_warning">'.$message.'</p>'.
211: &Apache::loncommon::end_page());
212: } else {
213: return &goto_login($r);
214: }
215: return OK;
216: }
217:
218: sub handler {
219: my ($r) = @_;
220:
221: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['token']);
222: my %data = &Apache::lonnet::tmpget($env{'form.token'});
223: if (keys(%data) == 0) {
224: return &goto_login($r);
225: }
226: my $delete = &Apache::lonnet::tmpdel($env{'form.token'});
227:
228: &Apache::lonlocal::get_language_handle($r);
229:
230: if ($delete ne 'ok') {
231: return &goto_login($r);
232: }
233:
234: if (!defined($data{'username'}) || !defined($data{'domain'})) {
235: return &goto_login($r);
236: }
237: if ($data{'ip'} ne $ENV{'REMOTE_ADDR'}) {
238: &Apache::lonnet::logthis('IP change when session migration requested -- was: '.
239: $data{'ip'}.'; now: '.$ENV{'REMOTE_ADDR'}.' for '.$data{'username'}.':'.$data{'domain'});
240: return &ip_changed($r,$data{'domain'},$data{'server'},\%data);
241: }
242:
243: &Apache::lonnet::logthis("Allowing access for $data{'username'}:$data{'domain'} to $data{'role'}");
244: my $home=&Apache::lonnet::homeserver($data{'username'},$data{'domain'});
245: my $udom;
246: if (&Apache::lonnet::domain($data{'domain'})) {
247: $udom=$data{'domain'};
248: }
249: if ($home =~ /(con_lost|no_such_host)/) { return &goto_login($r,$udom); }
250:
251: my $extra_env = &sso_check(\%data);
252: if (($data{'balancer'}) && ($data{'server'}) && ($data{'balcookie'})) {
253: if (ref($extra_env) eq 'HASH') {
254: $extra_env->{'request.balancercookie'} = $data{'server'}.':'.$data{'balcookie'};
255: } else {
256: $extra_env = { 'request.balancercookie' => $data{'server'}.':'.$data{'balcookie'} };
257: }
258: }
259:
260: my (%form,$cid);
261: if ($data{'symb'} ne '') {
262: $form{'symb'} = $data{'symb'};
263: }
264: if ($data{'iptoken'} ne '') {
265: $form{'iptoken'} = $data{'iptoken'};
266: }
267: if ($data{'noloadbalance'} ne '') {
268: $form{'noloadbalance'} = $data{'noloadbalance'};
269: }
270: if ($data{'role'}) {
271: if ($data{'role'} =~ m{\./($match_domain)/($match_courseid)(?:/\w+|$)}) {
272: unless (&Apache::lonnet::homeserver($2,$1) eq 'no_host') {
273: $cid = $1.'_'.$2;
274: }
275: }
276: } else {
277: my $handle = &Apache::lonnet::check_for_valid_session($r);
278: if ($handle) {
279: &Apache::lonnet::transfer_profile_to_env($r->dir_config('lonIDsDir'),
280: $handle);
281: if ($data{'origurl'} ne '') {
282: $r->internal_redirect($data{'origurl'});
283: } elsif ($env{'request.course.id'}) {
284: $r->internal_redirect('/adm/navmaps');
285: } else {
286: $r->internal_redirect('/adm/roles');
287: }
288: } else {
289: my $desturl = '/adm/roles';
290: if ($data{'origurl'} ne '') {
291: $desturl = $data{'origurl'};
292: }
293: &Apache::lonauth::success($r,$data{'username'},$data{'domain'},
294: $home,$desturl,$extra_env,\%form);
295:
296: }
297: return OK;
298:
299: }
300:
301: my $next_url='/adm/roles?selectrole=1&'.&escape($data{'role'}).'=1';
302: if ($data{'origurl'} ne '') {
303: $next_url .= '&orgurl='.&escape($data{'origurl'});
304: }
305: &Apache::lonauth::success($r,$data{'username'},$data{'domain'},$home,
306: $next_url,$extra_env,\%form,$cid);
307: return OK;
308: }
309:
310: 1;
311: __END__
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