Annotation of loncom/auth/lonacc.pm, revision 1.29
1.1 albertel 1: # The LearningOnline Network
2: # Cookie Based Access Handler
1.22 www 3: #
1.29 ! www 4: # $Id: lonacc.pm,v 1.28 2002/02/26 21:01:33 albertel Exp $
1.22 www 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: #
1.25 harris41 28: # YEAR=1999
1.4 www 29: # 5/21/99,5/22,5/29,5/31,6/15,16/11,22/11,
1.25 harris41 30: # YEAR=2000
1.14 www 31: # 01/06,01/13,05/31,06/01,09/06,09/25,09/28,10/30,11/6,
1.17 www 32: # 12/25,12/26,
1.25 harris41 33: # YEAR=2001
1.23 www 34: # 01/06/01,05/28,8/11,9/26,11/29 Gerd Kortemeyer
1.25 harris41 35: # 12/15 Scott Harrison
1.26 www 36: # YEAR=2002
1.27 www 37: # 1/4,2/25 Gerd Kortemeyer
1.25 harris41 38: #
39: ###
1.1 albertel 40:
41: package Apache::lonacc;
42:
43: use strict;
1.8 www 44: use Apache::Constants qw(:common :http :methods);
1.2 www 45: use Apache::File;
1.6 www 46: use Apache::lonnet;
1.25 harris41 47: use Apache::loncommon();
1.1 albertel 48: use CGI::Cookie();
1.16 www 49: use Fcntl qw(:flock);
1.1 albertel 50:
51: sub handler {
52: my $r = shift;
53: my $requrl=$r->uri;
54: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
55: my $lonid=$cookies{'lonID'};
56: my $cookie;
57: if ($lonid) {
58: my $handle=$lonid->value;
59: $handle=~s/\W//g;
60: my $lonidsdir=$r->dir_config('lonIDsDir');
61: if ((-e "$lonidsdir/$handle.id") && ($handle ne '')) {
1.6 www 62:
63: # ------------------------------------------- Transfer profile into environment
64:
1.2 www 65: my @profile;
66: {
67: my $idf=Apache::File->new("$lonidsdir/$handle.id");
1.16 www 68: flock($idf,LOCK_SH);
1.2 www 69: @profile=<$idf>;
1.16 www 70: $idf->close();
1.2 www 71: }
72: my $envi;
73: for ($envi=0;$envi<=$#profile;$envi++) {
74: chomp($profile[$envi]);
75: my ($envname,$envvalue)=split(/=/,$profile[$envi]);
1.9 www 76: $ENV{$envname} = $envvalue;
1.2 www 77: }
1.9 www 78: $ENV{'user.environment'} = "$lonidsdir/$handle.id";
1.18 www 79: if ($requrl=~/^\/res\//) {
1.17 www 80: $ENV{'request.state'} = "published";
81: } else {
82: $ENV{'request.state'} = 'unknown';
83: }
1.9 www 84: $ENV{'request.filename'} = $r->filename;
1.12 www 85:
1.6 www 86: # -------------------------------------------------------- Load POST parameters
87:
1.8 www 88:
89:
1.14 www 90: my $buffer;
1.6 www 91:
1.14 www 92: $r->read($buffer,$r->header_in('Content-length'));
93:
94: unless ($buffer=~/^(\-+\w+)\s+Content\-Disposition\:\s*form\-data/si) {
1.5 www 95: my @pairs=split(/&/,$buffer);
1.6 www 96: my $pair;
1.5 www 97: foreach $pair (@pairs) {
1.6 www 98: my ($name,$value) = split(/=/,$pair);
99: $value =~ tr/+/ /;
100: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
1.10 www 101: $name =~ tr/+/ /;
102: $name =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
1.28 albertel 103: &Apache::loncommon::add_to_env("form.$name",$value);
1.6 www 104: }
1.14 www 105: } else {
106: my $contentsep=$1;
107: my @lines = split (/\n/,$buffer);
108: my $name='';
109: my $value='';
110: my $fname='';
111: my $fmime='';
112: my $i;
113: for ($i=0;$i<=$#lines;$i++) {
114: if ($lines[$i]=~/^$contentsep/) {
115: if ($name) {
116: chomp($value);
117: if ($fname) {
118: $ENV{"form.$name.filename"}=$fname;
119: $ENV{"form.$name.mimetype"}=$fmime;
1.15 www 120: } else {
121: $value=~s/\s+$//s;
1.14 www 122: }
1.28 albertel 123: &Apache::loncommon::add_to_env("form.$name",$value);
1.14 www 124: }
125: if ($i<$#lines) {
126: $i++;
127: $lines[$i]=~
128: /Content\-Disposition\:\s*form\-data\;\s*name\=\"([^\"]+)\"/i;
129: $name=$1;
130: $value='';
131: if ($lines[$i]=~/filename\=\"([^\"]+)\"/i) {
132: $fname=$1;
133: if
134: ($lines[$i+1]=~/Content\-Type\:\s*([\w\-\/]+)/i) {
135: $fmime=$1;
136: $i++;
137: } else {
138: $fmime='';
139: }
140: } else {
141: $fname='';
142: $fmime='';
143: }
144: $i++;
145: }
146: } else {
147: $value.=$lines[$i]."\n";
148: }
149: }
150: }
1.26 www 151: $ENV{'request.method'}=$ENV{'REQUEST_METHOD'};
1.8 www 152: $r->method_number(M_GET);
153: $r->method('GET');
154: $r->headers_in->unset('Content-length');
1.6 www 155:
156: # ---------------------------------------------------------------- Check access
157:
158: if ($requrl!~/^\/adm\//) {
1.7 www 159: my $access=&Apache::lonnet::allowed('bre',$requrl);
160: if ($access eq '1') {
161: $ENV{'user.error.msg'}="$requrl:bre:0:0:Choose Course";
162: return HTTP_NOT_ACCEPTABLE;
163: }
164: if (($access ne '2') && ($access ne 'F')) {
165: $ENV{'user.error.msg'}="$requrl:bre:1:1:Access Denied";
166: return HTTP_NOT_ACCEPTABLE;
167: }
1.23 www 168: }
169: # ------------------------------------------------------------- This is allowed
170: if ($ENV{'request.course.id'}) {
1.24 www 171: &Apache::lonnet::countacc($requrl);
1.23 www 172: $requrl=~/\.(\w+)$/;
1.25 harris41 173: if (&Apache::loncommon::fileembstyle($1) eq 'ssi') {
1.23 www 174: # ------------------------------------- This is serious stuff, get symb and log
1.29 ! www 175: my $query=$r->args;
! 176: my $symb;
! 177: if ($query) {
! 178: &Apache::loncommon::get_unprocessed_cgi($query,['symb']);
! 179: }
! 180: if ($ENV{'form.symb'}) {
! 181: $symb=$ENV{'form.symb'};
! 182: } else {
! 183: $symb=&Apache::lonnet::symbread;
! 184: }
1.23 www 185: $ENV{'request.symb'}=$symb;
186: &Apache::lonnet::courseacclog($symb);
187: } else {
188: # ------------------------------------------------------- This is other content
189: &Apache::lonnet::courseacclog($requrl);
190: }
191: }
1.2 www 192: return OK;
1.1 albertel 193: } else {
1.5 www 194: $r->log_reason("Cookie $handle not valid", $r->filename)
1.1 albertel 195: };
196: }
1.6 www 197:
1.21 www 198: # -------------------------------------------- See if this is a public resource
199: if (&Apache::lonnet::metadata($requrl,'copyright') eq 'public') {
200: &Apache::lonnet::logthis('Granting public access: '.$requrl);
201: $ENV{'user.name'}='public';
202: $ENV{'user.domain'}='public';
203: $ENV{'request.state'} = "published";
204: $ENV{'request.publicaccess'} = 1;
205: $ENV{'request.filename'} = $r->filename;
206: return OK;
207: }
1.6 www 208: # ----------------------------------------------- Store where they wanted to go
1.21 www 209:
1.6 www 210: $ENV{'request.firsturl'}=$requrl;
1.1 albertel 211: return FORBIDDEN;
212: }
213:
214: 1;
215: __END__
1.25 harris41 216:
217: =head1 NAME
218:
219: Apache::lonacc - Cookie Based Access Handler
220:
221: =head1 SYNOPSIS
222:
223: Invoked (for various locations) by /etc/httpd/conf/srm.conf:
224:
225: PerlAccessHandler Apache::lonacc
226:
227: =head1 INTRODUCTION
228:
229: This module enables cookie based authentication and is used
230: to control access for many different LON-CAPA URIs.
231:
232: Whenever the client sends the cookie back to the server,
233: this cookie is handled by either lonacc.pm or loncacc.pm
234: (see srm.conf for what is invoked when). If
235: the cookie is missing or invalid, the user is re-challenged
236: for login information.
237:
238: This is part of the LearningOnline Network with CAPA project
239: described at http://www.lon-capa.org.
240:
241: =head1 HANDLER SUBROUTINE
242:
243: This routine is called by Apache and mod_perl.
244:
245: =over 4
246:
247: =item *
248:
249: transfer profile into environment
250:
251: =item *
252:
253: load POST parameters
254:
255: =item *
256:
257: check access
258:
259: =item *
260:
261: if allowed, get symb, log, generate course statistics if applicable
262:
263: =item *
264:
265: otherwise return error
266:
267: =item *
268:
269: see if public resource
270:
271: =item *
272:
273: store attempted access
274:
275: =back
276:
277: =cut
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