1: # The LearningOnline Network
2: # Cookie Based Access Handler
3: # 5/21/99,5/22,5/29,5/31,6/15,16/11,22/11,
4: # 01/06,01/13,05/31,06/01,09/06,09/25,09/28,10/30,11/6,
5: # 12/25,12/26,
6: # 01/06/01,05/28,8/11,9/26 Gerd Kortemeyer
7:
8: package Apache::lonacc;
9:
10: use strict;
11: use Apache::Constants qw(:common :http :methods);
12: use Apache::File;
13: use Apache::lonnet;
14: use CGI::Cookie();
15: use Fcntl qw(:flock);
16:
17: sub handler {
18: my $r = shift;
19: my $requrl=$r->uri;
20: my %cookies=CGI::Cookie->parse($r->header_in('Cookie'));
21: my $lonid=$cookies{'lonID'};
22: my $cookie;
23: if ($lonid) {
24: my $handle=$lonid->value;
25: $handle=~s/\W//g;
26: my $lonidsdir=$r->dir_config('lonIDsDir');
27: if ((-e "$lonidsdir/$handle.id") && ($handle ne '')) {
28:
29: # ------------------------------------------- Transfer profile into environment
30:
31: my @profile;
32: {
33: my $idf=Apache::File->new("$lonidsdir/$handle.id");
34: flock($idf,LOCK_SH);
35: @profile=<$idf>;
36: $idf->close();
37: }
38: my $envi;
39: for ($envi=0;$envi<=$#profile;$envi++) {
40: chomp($profile[$envi]);
41: my ($envname,$envvalue)=split(/=/,$profile[$envi]);
42: $ENV{$envname} = $envvalue;
43: }
44: $ENV{'user.environment'} = "$lonidsdir/$handle.id";
45: if ($requrl=~/^\/res\//) {
46: $ENV{'request.state'} = "published";
47: } else {
48: $ENV{'request.state'} = 'unknown';
49: }
50: $ENV{'request.filename'} = $r->filename;
51:
52: # -------------------------------------------------------- Load POST parameters
53:
54:
55:
56: my $buffer;
57:
58: $r->read($buffer,$r->header_in('Content-length'));
59:
60: unless ($buffer=~/^(\-+\w+)\s+Content\-Disposition\:\s*form\-data/si) {
61: my @pairs=split(/&/,$buffer);
62: my $pair;
63: foreach $pair (@pairs) {
64: my ($name,$value) = split(/=/,$pair);
65: $value =~ tr/+/ /;
66: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
67: $name =~ tr/+/ /;
68: $name =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
69: $ENV{"form.$name"}=$value;
70: }
71: } else {
72: my $contentsep=$1;
73: my @lines = split (/\n/,$buffer);
74: my $name='';
75: my $value='';
76: my $fname='';
77: my $fmime='';
78: my $i;
79: for ($i=0;$i<=$#lines;$i++) {
80: if ($lines[$i]=~/^$contentsep/) {
81: if ($name) {
82: chomp($value);
83: if ($fname) {
84: $ENV{"form.$name.filename"}=$fname;
85: $ENV{"form.$name.mimetype"}=$fmime;
86: } else {
87: $value=~s/\s+$//s;
88: }
89: $ENV{"form.$name"}=$value;
90: }
91: if ($i<$#lines) {
92: $i++;
93: $lines[$i]=~
94: /Content\-Disposition\:\s*form\-data\;\s*name\=\"([^\"]+)\"/i;
95: $name=$1;
96: $value='';
97: if ($lines[$i]=~/filename\=\"([^\"]+)\"/i) {
98: $fname=$1;
99: if
100: ($lines[$i+1]=~/Content\-Type\:\s*([\w\-\/]+)/i) {
101: $fmime=$1;
102: $i++;
103: } else {
104: $fmime='';
105: }
106: } else {
107: $fname='';
108: $fmime='';
109: }
110: $i++;
111: }
112: } else {
113: $value.=$lines[$i]."\n";
114: }
115: }
116: }
117: $r->method_number(M_GET);
118: $r->method('GET');
119: $r->headers_in->unset('Content-length');
120:
121: # ---------------------------------------------------------------- Check access
122:
123: if ($requrl!~/^\/adm\//) {
124: my $access=&Apache::lonnet::allowed('bre',$requrl);
125: if ($access eq '1') {
126: $ENV{'user.error.msg'}="$requrl:bre:0:0:Choose Course";
127: return HTTP_NOT_ACCEPTABLE;
128: }
129: if (($access ne '2') && ($access ne 'F')) {
130: $ENV{'user.error.msg'}="$requrl:bre:1:1:Access Denied";
131: return HTTP_NOT_ACCEPTABLE;
132: }
133: }
134: return OK;
135: } else {
136: $r->log_reason("Cookie $handle not valid", $r->filename)
137: };
138: }
139:
140: # -------------------------------------------- See if this is a public resource
141: if (&Apache::lonnet::metadata($requrl,'copyright') eq 'public') {
142: &Apache::lonnet::logthis('Granting public access: '.$requrl);
143: $ENV{'user.name'}='public';
144: $ENV{'user.domain'}='public';
145: $ENV{'request.state'} = "published";
146: $ENV{'request.publicaccess'} = 1;
147: $ENV{'request.filename'} = $r->filename;
148: return OK;
149: }
150: # ----------------------------------------------- Store where they wanted to go
151:
152: $ENV{'request.firsturl'}=$requrl;
153: return FORBIDDEN;
154: }
155:
156: 1;
157: __END__
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