Annotation of loncom/auth/lonacc.pm, revision 1.32
1.1 albertel 1: # The LearningOnline Network
2: # Cookie Based Access Handler
1.22 www 3: #
1.32 ! www 4: # $Id: lonacc.pm,v 1.31 2002/05/07 18:49:33 www 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;
1.32 ! www 85:
! 86: $ENV{'request.copyright'} =
! 87: &Apache::lonnet::metadata($requrl,'copyright');
1.12 www 88:
1.6 www 89: # -------------------------------------------------------- Load POST parameters
90:
1.8 www 91:
92:
1.14 www 93: my $buffer;
1.6 www 94:
1.14 www 95: $r->read($buffer,$r->header_in('Content-length'));
96:
97: unless ($buffer=~/^(\-+\w+)\s+Content\-Disposition\:\s*form\-data/si) {
1.5 www 98: my @pairs=split(/&/,$buffer);
1.6 www 99: my $pair;
1.5 www 100: foreach $pair (@pairs) {
1.6 www 101: my ($name,$value) = split(/=/,$pair);
102: $value =~ tr/+/ /;
103: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
1.10 www 104: $name =~ tr/+/ /;
105: $name =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
1.28 albertel 106: &Apache::loncommon::add_to_env("form.$name",$value);
1.6 www 107: }
1.14 www 108: } else {
109: my $contentsep=$1;
110: my @lines = split (/\n/,$buffer);
111: my $name='';
112: my $value='';
113: my $fname='';
114: my $fmime='';
115: my $i;
116: for ($i=0;$i<=$#lines;$i++) {
117: if ($lines[$i]=~/^$contentsep/) {
118: if ($name) {
119: chomp($value);
120: if ($fname) {
121: $ENV{"form.$name.filename"}=$fname;
122: $ENV{"form.$name.mimetype"}=$fmime;
1.15 www 123: } else {
124: $value=~s/\s+$//s;
1.14 www 125: }
1.28 albertel 126: &Apache::loncommon::add_to_env("form.$name",$value);
1.14 www 127: }
128: if ($i<$#lines) {
129: $i++;
130: $lines[$i]=~
131: /Content\-Disposition\:\s*form\-data\;\s*name\=\"([^\"]+)\"/i;
132: $name=$1;
133: $value='';
134: if ($lines[$i]=~/filename\=\"([^\"]+)\"/i) {
135: $fname=$1;
136: if
137: ($lines[$i+1]=~/Content\-Type\:\s*([\w\-\/]+)/i) {
138: $fmime=$1;
139: $i++;
140: } else {
141: $fmime='';
142: }
143: } else {
144: $fname='';
145: $fmime='';
146: }
147: $i++;
148: }
149: } else {
150: $value.=$lines[$i]."\n";
151: }
152: }
153: }
1.26 www 154: $ENV{'request.method'}=$ENV{'REQUEST_METHOD'};
1.8 www 155: $r->method_number(M_GET);
156: $r->method('GET');
157: $r->headers_in->unset('Content-length');
1.6 www 158:
159: # ---------------------------------------------------------------- Check access
160:
161: if ($requrl!~/^\/adm\//) {
1.7 www 162: my $access=&Apache::lonnet::allowed('bre',$requrl);
163: if ($access eq '1') {
164: $ENV{'user.error.msg'}="$requrl:bre:0:0:Choose Course";
165: return HTTP_NOT_ACCEPTABLE;
166: }
167: if (($access ne '2') && ($access ne 'F')) {
168: $ENV{'user.error.msg'}="$requrl:bre:1:1:Access Denied";
169: return HTTP_NOT_ACCEPTABLE;
170: }
1.23 www 171: }
172: # ------------------------------------------------------------- This is allowed
173: if ($ENV{'request.course.id'}) {
1.24 www 174: &Apache::lonnet::countacc($requrl);
1.23 www 175: $requrl=~/\.(\w+)$/;
1.25 harris41 176: if (&Apache::loncommon::fileembstyle($1) eq 'ssi') {
1.23 www 177: # ------------------------------------- This is serious stuff, get symb and log
1.29 www 178: my $query=$r->args;
179: my $symb;
180: if ($query) {
181: &Apache::loncommon::get_unprocessed_cgi($query,['symb']);
182: }
183: if ($ENV{'form.symb'}) {
1.31 www 184: $symb=&Apache::lonnet::symbclean($ENV{'form.symb'});
185: if (&Apache::lonnet::symbverify($symb,$requrl)) {
186: my ($map,$mid,$murl)=split(/\_\_\_/,$symb);
187: &Apache::lonnet::symblist($map,$murl => $mid,
188: 'last_known' => $murl);
189: } else {
190: $r->log_reason('Invalid symb for '.$requrl.': '.
191: $symb);
192: $ENV{'user.error.msg'}=
193: "$requrl:bre:1:1:Invalid Access";
194: return HTTP_NOT_ACCEPTABLE;
195: }
1.29 www 196: } else {
197: $symb=&Apache::lonnet::symbread;
198: }
1.23 www 199: $ENV{'request.symb'}=$symb;
200: &Apache::lonnet::courseacclog($symb);
201: } else {
202: # ------------------------------------------------------- This is other content
203: &Apache::lonnet::courseacclog($requrl);
204: }
205: }
1.2 www 206: return OK;
1.1 albertel 207: } else {
1.5 www 208: $r->log_reason("Cookie $handle not valid", $r->filename)
1.1 albertel 209: };
210: }
1.6 www 211:
1.21 www 212: # -------------------------------------------- See if this is a public resource
213: if (&Apache::lonnet::metadata($requrl,'copyright') eq 'public') {
214: &Apache::lonnet::logthis('Granting public access: '.$requrl);
215: $ENV{'user.name'}='public';
216: $ENV{'user.domain'}='public';
217: $ENV{'request.state'} = "published";
218: $ENV{'request.publicaccess'} = 1;
219: $ENV{'request.filename'} = $r->filename;
220: return OK;
221: }
1.6 www 222: # ----------------------------------------------- Store where they wanted to go
1.21 www 223:
1.6 www 224: $ENV{'request.firsturl'}=$requrl;
1.1 albertel 225: return FORBIDDEN;
226: }
227:
228: 1;
229: __END__
1.25 harris41 230:
231: =head1 NAME
232:
233: Apache::lonacc - Cookie Based Access Handler
234:
235: =head1 SYNOPSIS
236:
237: Invoked (for various locations) by /etc/httpd/conf/srm.conf:
238:
239: PerlAccessHandler Apache::lonacc
240:
241: =head1 INTRODUCTION
242:
243: This module enables cookie based authentication and is used
244: to control access for many different LON-CAPA URIs.
245:
246: Whenever the client sends the cookie back to the server,
247: this cookie is handled by either lonacc.pm or loncacc.pm
248: (see srm.conf for what is invoked when). If
249: the cookie is missing or invalid, the user is re-challenged
250: for login information.
251:
252: This is part of the LearningOnline Network with CAPA project
253: described at http://www.lon-capa.org.
254:
255: =head1 HANDLER SUBROUTINE
256:
257: This routine is called by Apache and mod_perl.
258:
259: =over 4
260:
261: =item *
262:
263: transfer profile into environment
264:
265: =item *
266:
267: load POST parameters
268:
269: =item *
270:
271: check access
272:
273: =item *
274:
275: if allowed, get symb, log, generate course statistics if applicable
276:
277: =item *
278:
279: otherwise return error
280:
281: =item *
282:
283: see if public resource
284:
285: =item *
286:
287: store attempted access
288:
289: =back
290:
291: =cut
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/back.gif){kind=icon}
Return to lonacc.pm CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [LON-CAPA] / loncom / auth