Annotation of loncom/auth/switchserver.pm, revision 1.26
1.1 albertel 1: # The LearningOnline Network
2: # Switch Servers Handler
3: #
1.26 ! raeburn 4: # $Id: switchserver.pm,v 1.25 2010/03/22 20:11:08 droeschl 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;
37:
38: sub init_env {
39: my ($r) = @_;
1.5 albertel 40:
41: if (-e $env{'user.environment'}) {
42: return $env{'user.environment'};
43: }
1.1 albertel 44: my $requrl=$r->uri;
1.18 albertel 45: my $handle= &Apache::lonnet::check_for_valid_session($r);
46: if ($handle ne '') {
1.1 albertel 47: return undef;
48: }
1.18 albertel 49: my $lonidsdir=$r->dir_config('lonIDsDir');
1.1 albertel 50: &Apache::lonnet::transfer_profile_to_env($lonidsdir,$handle);
51:
1.5 albertel 52: return $r->dir_config('lonIDsDir')."/$handle.id";
1.1 albertel 53: }
54:
1.14 albertel 55: sub do_redirect {
56: my ($r,$url,$only_body,$extra_text) = @_;
57: $r->send_http_header;
58: my $start_page =
1.16 raeburn 59: &Apache::loncommon::start_page('Switching Server ...',undef,
60: {'redirect' => [0.5,$url],
1.14 albertel 61: 'only_body' => $only_body,});
62: my $end_page = &Apache::loncommon::end_page();
63: $r->print($start_page.$extra_text.$end_page);
64: return OK;
65:
66: }
67:
1.1 albertel 68: sub handler {
1.5 albertel 69: my ($r) = @_;
1.1 albertel 70:
71: my $handle=&init_env($r);
72: if (!defined($handle)) { return FORBIDDEN; }
73:
74: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1.22 raeburn 75: ['otherserver','role','origurl','symb']);
1.5 albertel 76:
1.13 albertel 77: my $switch_to=&Apache::lonnet::hostname($env{'form.otherserver'});
1.17 albertel 78: if (! $env{'form.otherserver'}) {
79: $env{'form.otherserver'} =
80: &Apache::lonnet::find_existing_session($env{'user.domain'},
81: $env{'user.name'});
82: if (! $env{'form.otherserver'}) {
83: $env{'form.otherserver'} =
84: &Apache::lonnet::spareserver(30000,undef,1);
85: }
1.26 ! raeburn 86:
1.13 albertel 87: $switch_to=&Apache::lonnet::hostname($env{'form.otherserver'});
1.4 albertel 88: }
1.5 albertel 89:
1.1 albertel 90: if (!defined($switch_to)) { return FORBIDDEN; }
1.4 albertel 91:
1.14 albertel 92: if ($env{'user.name'} eq 'public'
93: && $env{'user.domain'} eq 'public') {
1.19 albertel 94: my $url = 'http://'.$switch_to.$r->uri;
1.14 albertel 95: return &do_redirect($r,$url,1)
96: }
97:
1.26 ! raeburn 98: my $canhost = 1;
! 99: my @machinedoms = &Apache::lonnet::machine_domains($switch_to);
! 100: unless (grep(/^\Q$env{'user.domain'}\E/,@machinedoms)) {
! 101: my $machinedom = &Apache::lonnet::host_domain($env{'form.otherserver'});
! 102: my %defdomdefaults = &Apache::lonnet::get_domain_defaults($machinedom);
! 103: my %udomdefaults = &Apache::lonnet::get_domain_defaults($env{'user.domain'});
! 104: my $remoterev = &Apache::lonnet::get_server_loncaparev($env{'user.domain'},$env{'form.otherserver'});
! 105: $canhost = &Apache::lonnet::can_host_session($env{'user.domain'},$machinedom,
! 106: $remoterev,$udomdefaults{'remotesessions'},
! 107: $defdomdefaults{'hostedsessions'});
! 108: }
! 109:
! 110: unless ($canhost) { return FORBIDDEN; }
! 111:
1.4 albertel 112: if ($env{'form.role'} &&
113: !exists($env{'user.role.'.$env{'form.role'}})) { return FORBIDDEN; }
1.1 albertel 114:
115: #remove session env, and log event
1.5 albertel 116: unlink($handle);
1.1 albertel 117: my %temp=('switchserver' => time.':'.$env{'form.otherserver'},
118: $env{'form.role'});
119: &Apache::lonnet::put('email_status',\%temp);
120: &Apache::lonnet::log($env{'user.domain'},$env{'user.name'},
121: $env{'user.home'},
122: "Switch Server to $env{'form.otherserver'} with role $env{'form.role'} $ENV{'REMOTE_ADDR'}");
123:
124: &Apache::loncommon::content_type($r,'text/html');
1.12 albertel 125:
126: #expire the cookie
127: my $c = new CGI::Cookie(-name => 'lonID',
128: -value => '',
129: -expires => '-10y',);
130: $r->header_out('Set-cookie' => $c);
1.20 albertel 131:
132: if ($r->header_only) {
133: $r->send_http_header;
134: return OK;
135: }
1.1 albertel 136: # -------------------------------------------------------- Menu script and info
137:
138: # ---------------------------------------------------------------- Get handover
139:
1.3 albertel 140: my %info=('ip' => $ENV{'REMOTE_ADDR'},
141: 'domain' => $env{'user.domain'},
142: 'username' => $env{'user.name'},
143: 'role' => $env{'form.role'},
144: 'server' => $r->dir_config('lonHostID'));
1.22 raeburn 145: if ($env{'form.origurl'}) {
146: $info{'origurl'} = $env{'form.origurl'};
147: }
148: if ($env{'form.symb'}) {
149: $info{'symb'} = $env{'form.symb'};
150: }
1.8 albertel 151: if ($env{'request.sso.login'}) {
152: $info{'sso.login'} = $env{'request.sso.login'};
153: }
1.11 raeburn 154: if ($env{'request.sso.reloginserver'}) {
155: $info{'sso.reloginserver'} = $env{'request.sso.reloginserver'};
156: }
1.3 albertel 157: my $token = &Apache::lonnet::tmpput(\%info,$env{'form.otherserver'});
1.14 albertel 158: my $url ='http://'.$switch_to.'/adm/login?'.
159: 'domain='.$env{'user.domain'}.
1.21 albertel 160: '&username='.$env{'user.name'}.
161: '&token='.$token;
1.1 albertel 162: # --------------------------------------------------------------- Screen Output
163: &Apache::lonnet::flushcourselogs();
1.24 droeschl 164: return &do_redirect($r, $url, 0);
1.1 albertel 165: }
166:
167: 1;
168: __END__
169:
170:
171:
172:
173:
174:
175:
176:
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