Annotation of loncom/auth/lonshibauth.pm, revision 1.11
1.1 raeburn 1: # The LearningOnline Network
2: # Redirect Shibboleth authentication to designated URL (/adm/sso).
3: #
1.11 ! raeburn 4: # $Id: lonshibauth.pm,v 1.10 2021/10/10 23:59:19 raeburn Exp $
1.1 raeburn 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: =head1 NAME
30:
31: Apache::lonshibauth - Redirect Shibboleth authentication
32:
33: =head1 SYNOPSIS
34:
35: Invoked when lonOtherAuthen is set to yes, and type is Shibboleth
36:
37: If server is configured as a Shibboleth SP, the main Apache
38: configuration file, e.g., /etc/httpd/conf/httpd.conf
39: (for RHEL/CentOS/Scentific Linux/Fedora) should contain:
40:
41: LoadModule mod_shib /usr/lib/shibboleth/mod_shib_22.so
42:
43: or equivalent (depending on Apache version)
44: before the line to include conf/loncapa_apache.conf
45:
46: =head1 INTRODUCTION
47:
48: Redirects a user requiring Single Sign On via Shibboleth to a
49: URL -- /adm/sso -- on the server which is configured to use that service.
50:
51: =head1 HANDLER SUBROUTINE
52:
53: This routine is called by Apache and mod_perl.
54:
55: =over 4
56:
57: If $r->user defined and requested uri not /adm/sso
58: redirect to /adm/sso
59:
60: Otherwise return DECLINED
61:
62: =back
63:
64: =cut
65:
66: package Apache::lonshibauth;
67:
68: use strict;
69: use lib '/home/httpd/lib/perl/';
1.3 raeburn 70: use Apache::lonnet;
1.11 ! raeburn 71: use Apache::loncommon;
! 72: use Apache::lonacc;
1.2 raeburn 73: use Apache::Constants qw(:common REDIRECT);
1.11 ! raeburn 74: use LONCAPA qw(:DEFAULT :match);
1.1 raeburn 75:
76: sub handler {
77: my $r = shift;
78: my $target = '/adm/sso';
1.6 raeburn 79: if (&Apache::lonnet::get_saml_landing()) {
80: $target = '/adm/login';
81: }
1.11 ! raeburn 82: if (($r->user eq '') && ($r->uri ne $target) && ($r->uri ne '/adm/sso')) {
1.3 raeburn 83: my $lonhost = $Apache::lonnet::perlvar{'lonHostID'};
84: my $hostname = &Apache::lonnet::hostname($lonhost);
85: if (!$hostname) { $hostname = $r->hostname(); }
86: my $protocol = $Apache::lonnet::protocol{$lonhost};
87: unless ($protocol eq 'https') { $protocol = 'http'; }
1.4 raeburn 88: my $alias = &Apache::lonnet::use_proxy_alias($r,$lonhost);
1.7 raeburn 89: if (($alias ne '') &&
90: (&Apache::lonnet::alias_shibboleth($lonhost))) {
91: $hostname = $alias;
92: }
1.3 raeburn 93: my $dest = $protocol.'://'.$hostname.$target;
1.11 ! raeburn 94: if ($target eq '/adm/login') {
! 95: my $querystring = &set_token($r,$lonhost);
! 96: if ($querystring ne '') {
! 97: $dest .= '?'.$querystring;
! 98: }
! 99: } else {
! 100: my $uri = $r->uri;
! 101: if ($r->args ne '') {
! 102: $dest .= (($dest=~/\?/)?'&':'?').$r->args;
! 103: }
! 104: unless (($uri eq '/adm/roles') || ($uri eq '/adm/logout')) {
! 105: unless ($r->args =~ /origurl=/) {
! 106: $dest.=(($dest=~/\?/)?'&':'?').'origurl='.$uri;
1.8 raeburn 107: }
1.11 ! raeburn 108: }
! 109: if ($uri =~ m{^/tiny/$match_domain/\w+$}) {
! 110: unless (($r->args =~ /ltoken=/) || ($r->args =~ /linkkey=/)) {
! 111: &Apache::lonacc::get_posted_cgi($r,['linkkey']);
! 112: if ($env{'form.linkkey'} ne '') {
! 113: $dest.=(($dest=~/\?/)?'&':'?').'linkkey='.$env{'form.linkkey'};
! 114: }
1.8 raeburn 115: }
116: }
1.5 raeburn 117: }
1.1 raeburn 118: $r->header_out(Location => $dest);
119: return REDIRECT;
120: } else {
121: return DECLINED;
122: }
123: }
124:
1.11 ! raeburn 125: sub set_token {
! 126: my ($r,$lonhost) = @_;
! 127: my ($firsturl,$querystring,$ssotoken,@names,%token);
! 128: @names = ('role','symb','ltoken','linkkey');
! 129: map { $token{$_} = 1; } @names;
! 130: unless (($r->uri eq '/adm/roles') || ($r->uri eq '/adm/logout')) {
! 131: $firsturl = $r->uri;
! 132: }
! 133: if ($r->args ne '') {
! 134: &Apache::loncommon::get_unprocessed_cgi($r->args);
! 135: }
! 136: if ($r->uri =~ m{^/tiny/$match_domain/\w+$}) {
! 137: unless (($env{'form.ltoken'}) || ($env{'form.linkkey'})) {
! 138: &Apache::lonacc::get_posted_cgi($r,['linkkey']);
! 139: }
! 140: }
! 141: my $extras;
! 142: foreach my $name (@names) {
! 143: if ($env{'form.'.$name} ne '') {
! 144: if ($name eq 'ltoken') {
! 145: my %info = &Apache::lonnet::tmpget($env{'form.ltoken'});
! 146: if ($info{'linkprot'}) {
! 147: $extras .= '&linkprot='.&escape($info{'linkprot'});
! 148: last;
! 149: }
! 150: } else {
! 151: $extras .= '&'.$name.'='.&escape($env{'form.'.$name});
! 152: }
! 153: }
! 154: }
! 155: if (($firsturl ne '') || ($extras ne '')) {
! 156: $extras .= ':sso';
! 157: $ssotoken = &Apache::lonnet::reply('tmpput:'.&escape($firsturl).
! 158: $extras,$lonhost);
! 159: $querystring = 'sso='.$ssotoken;
! 160: }
! 161: if ($r->args ne '') {
! 162: foreach my $key (sort(keys(%env))) {
! 163: if ($key =~ /^form\.(.+)$/) {
! 164: my $name = $1;
! 165: next if ($token{$name});
! 166: $querystring .= '&'.$name.'='.$env{$key};
! 167: }
! 168: }
! 169: }
! 170: return $querystring;
! 171: }
! 172:
1.1 raeburn 173: 1;
174: __END__
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