Annotation of loncom/auth/switchserver.pm, revision 1.32
1.1 albertel 1: # The LearningOnline Network
2: # Switch Servers Handler
3: #
1.32 ! raeburn 4: # $Id: switchserver.pm,v 1.31 2011/08/02 14:17:13 raeburn Exp $
1.1 albertel 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::switchserver;
30:
31: use strict;
32: use Apache::Constants qw(:common);
33: use Apache::lonnet;
34: use Apache::lonmenu;
35: use CGI::Cookie();
36: use Apache::lonlocal;
1.28 raeburn 37: use LONCAPA qw(:DEFAULT :match);
1.1 albertel 38:
39: sub init_env {
40: my ($r) = @_;
1.5 albertel 41:
42: if (-e $env{'user.environment'}) {
43: return $env{'user.environment'};
44: }
1.1 albertel 45: my $requrl=$r->uri;
1.18 albertel 46: my $handle= &Apache::lonnet::check_for_valid_session($r);
47: if ($handle ne '') {
1.1 albertel 48: return undef;
49: }
1.18 albertel 50: my $lonidsdir=$r->dir_config('lonIDsDir');
1.1 albertel 51: &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
52:
1.5 albertel 53: return $r->dir_config('lonIDsDir')."/$handle.id";
1.1 albertel 54: }
55:
1.14 albertel 56: sub do_redirect {
57: my ($r,$url,$only_body,$extra_text) = @_;
58: $r->send_http_header;
59: my $start_page =
1.16 raeburn 60: &Apache::loncommon::start_page('Switching Server ...',undef,
61: {'redirect' => [0.5,$url],
1.14 albertel 62: 'only_body' => $only_body,});
63: my $end_page = &Apache::loncommon::end_page();
64: $r->print($start_page.$extra_text.$end_page);
1.30 raeburn 65: unless ($env{'user.name'} eq 'public' && ($env{'user.domain'} eq 'public')) {
66: $r->register_cleanup(\&flush_course_logs);
67: }
1.14 albertel 68: return OK;
1.30 raeburn 69: }
1.14 albertel 70:
1.30 raeburn 71: sub flush_course_logs {
72: &Apache::lonnet::flushcourselogs();
73: return OK;
1.14 albertel 74: }
75:
1.1 albertel 76: sub handler {
1.5 albertel 77: my ($r) = @_;
1.1 albertel 78:
79: my $handle=&init_env($r);
80: if (!defined($handle)) { return FORBIDDEN; }
81:
82: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1.22 raeburn 83: ['otherserver','role','origurl','symb']);
1.5 albertel 84:
1.13 albertel 85: my $switch_to=&Apache::lonnet::hostname($env{'form.otherserver'});
1.17 albertel 86: if (! $env{'form.otherserver'}) {
87: $env{'form.otherserver'} =
88: &Apache::lonnet::find_existing_session($env{'user.domain'},
89: $env{'user.name'});
90: if (! $env{'form.otherserver'}) {
91: $env{'form.otherserver'} =
92: &Apache::lonnet::spareserver(30000,undef,1);
93: }
1.13 albertel 94: $switch_to=&Apache::lonnet::hostname($env{'form.otherserver'});
1.4 albertel 95: }
1.5 albertel 96:
1.1 albertel 97: if (!defined($switch_to)) { return FORBIDDEN; }
1.4 albertel 98:
1.14 albertel 99: if ($env{'user.name'} eq 'public'
100: && $env{'user.domain'} eq 'public') {
1.19 albertel 101: my $url = 'http://'.$switch_to.$r->uri;
1.14 albertel 102: return &do_redirect($r,$url,1)
103: }
104:
1.28 raeburn 105: my $skip_canhost_check = '';
106: if ($env{'form.role'}) {
107: if (!exists($env{'user.role.'.$env{'form.role'}})) {
108: return FORBIDDEN;
109: } else {
110: my $now = time;
111: my ($start,$end) = split(/\./,$env{'user.role.'.$env{'form.role'}});
112: if (($start && $start > $now) || ($end && $end < $now)) {
113: return FORBIDDEN;
114: } elsif ($env{'form.role'} eq 'au./'.$env{'user.domain'}.'/') {
115: if (&Apache::lonnet::homeserver($env{'user.name'},$env{'user.domain'}) eq $env{'form.otherserver'}) {
116: $skip_canhost_check = 1;
117: }
1.31 raeburn 118: } elsif ($env{'form.role'} =~ m{^[ac]a\./($match_domain)/($match_username)$}) {
1.28 raeburn 119: if (&Apache::lonnet::homeserver($2,$1) eq $env{'form.otherserver'}) {
120: $skip_canhost_check = 1;
121: }
122: }
123: }
124: }
125:
126: unless ($skip_canhost_check) {
127: my $canhost = 1;
128: my $uprimary_id = &Apache::lonnet::domain($env{'user.domain'},'primary');
129: my $uint_dom = &Apache::lonnet::internet_dom($uprimary_id);
1.29 raeburn 130: my @intdoms;
131: my $internet_names = &Apache::lonnet::get_internet_names($env{'form.otherserver'});
132: if (ref($internet_names) eq 'ARRAY') {
133: @intdoms = @{$internet_names};
134: }
1.28 raeburn 135: unless ($uint_dom ne '' && grep(/^\Q$uint_dom\E$/,@intdoms)) {
136: my $serverhomeID = &Apache::lonnet::get_server_homeID($switch_to);
137: my $serverhomedom = &Apache::lonnet::host_domain($serverhomeID);
138: my %defdomdefaults = &Apache::lonnet::get_domain_defaults($serverhomedom);
139: my %udomdefaults = &Apache::lonnet::get_domain_defaults($env{'user.domain'});
140: my $remoterev = &Apache::lonnet::get_server_loncaparev($env{'user.domain'},$env{'form.otherserver'});
141: $canhost =
142: &Apache::lonnet::can_host_session($env{'user.domain'},
143: $env{'form.otherserver'},
144: $remoterev,
145: $udomdefaults{'remotesessions'},
146: $defdomdefaults{'hostedsessions'});
147: }
148: unless ($canhost) { return FORBIDDEN; }
1.26 raeburn 149: }
150:
1.1 albertel 151: #remove session env, and log event
1.5 albertel 152: unlink($handle);
1.1 albertel 153: my %temp=('switchserver' => time.':'.$env{'form.otherserver'},
154: $env{'form.role'});
155: &Apache::lonnet::put('email_status',\%temp);
156: &Apache::lonnet::log($env{'user.domain'},$env{'user.name'},
157: $env{'user.home'},
158: "Switch Server to $env{'form.otherserver'} with role $env{'form.role'} $ENV{'REMOTE_ADDR'}");
159:
160: &Apache::loncommon::content_type($r,'text/html');
1.12 albertel 161:
162: #expire the cookie
163: my $c = new CGI::Cookie(-name => 'lonID',
164: -value => '',
165: -expires => '-10y',);
166: $r->header_out('Set-cookie' => $c);
1.20 albertel 167:
168: if ($r->header_only) {
169: $r->send_http_header;
170: return OK;
171: }
1.1 albertel 172: # -------------------------------------------------------- Menu script and info
173:
174: # ---------------------------------------------------------------- Get handover
175:
1.32 ! raeburn 176: my ($is_balancer) = &Apache::lonnet::check_loadbalancing($env{'user.name'},$env{'user.domain'});
1.3 albertel 177: my %info=('ip' => $ENV{'REMOTE_ADDR'},
178: 'domain' => $env{'user.domain'},
179: 'username' => $env{'user.name'},
180: 'role' => $env{'form.role'},
1.32 ! raeburn 181: 'server' => $r->dir_config('lonHostID'),
! 182: 'balancer' => $is_balancer);
1.22 raeburn 183: if ($env{'form.origurl'}) {
184: $info{'origurl'} = $env{'form.origurl'};
185: }
186: if ($env{'form.symb'}) {
187: $info{'symb'} = $env{'form.symb'};
188: }
1.8 albertel 189: if ($env{'request.sso.login'}) {
190: $info{'sso.login'} = $env{'request.sso.login'};
191: }
1.11 raeburn 192: if ($env{'request.sso.reloginserver'}) {
193: $info{'sso.reloginserver'} = $env{'request.sso.reloginserver'};
194: }
1.3 albertel 195: my $token = &Apache::lonnet::tmpput(\%info,$env{'form.otherserver'});
1.14 albertel 196: my $url ='http://'.$switch_to.'/adm/login?'.
197: 'domain='.$env{'user.domain'}.
1.21 albertel 198: '&username='.$env{'user.name'}.
199: '&token='.$token;
1.1 albertel 200: # --------------------------------------------------------------- Screen Output
1.24 droeschl 201: return &do_redirect($r, $url, 0);
1.1 albertel 202: }
203:
204: 1;
205: __END__
206:
207:
208:
209:
210:
211:
212:
213:
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