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