1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
|
# -*- Mode: perl; indent-tabs-mode: nil -*-
#
# The contents of this file are subject to the Mozilla Public
# License Version 1.1 (the "License"); you may not use this file
# except in compliance with the License. You may obtain a copy of
# the License at http://www.mozilla.org/MPL/
#
# Software distributed under the License is distributed on an "AS
# IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
# implied. See the License for the specific language governing
# rights and limitations under the License.
#
# The Original Code are the Bugzilla tests.
#
# The Initial Developer of the Original Code is Jacob Steenhagen.
# Portions created by Jacob Steenhagen are
# Copyright (C) 2001 Jacob Steenhagen. All
# Rights Reserved.
#
# Contributor(s): Gervase Markham <gerv@gerv.net>
#################
#Bugzilla Test 8#
#####filter######
# This test scans all our templates for every directive. Having eliminated
# those which cannot possibly cause XSS problems, it then checks the rest
# against the safe list stored in the filterexceptions.pl file.
# Sample exploit code: '>"><script>alert('Oh dear...')</script>
use strict;
use lib 't';
use vars qw(%safe);
use Support::Templates;
use File::Spec 0.82;
use Test::More tests => $Support::Templates::num_actual_files;
use Cwd;
# Undefine the record separator so we can read in whole files at once
my $oldrecsep = $/;
my $topdir = cwd;
$/ = undef;
foreach my $path (@Support::Templates::include_paths) {
$path =~ m|template/([^/]+)/([^/]+)|;
my $lang = $1;
my $flavor = $2;
chdir $topdir; # absolute path
my @testitems = Support::Templates::find_actual_files($path);
chdir $topdir; # absolute path
next unless @testitems;
# Some people require this, others don't. No-one knows why.
chdir $path; # relative path
# We load a %safe list of acceptable exceptions.
if (!-r "filterexceptions.pl") {
ok(0, "$path has templates but no filterexceptions.pl file. --ERROR");
next;
}
else {
do "filterexceptions.pl";
}
# We preprocess the %safe hash of lists into a hash of hashes. This allows
# us to flag which members were not found, and report that as a warning,
# thereby keeping the lists clean.
foreach my $file (keys %safe) {
my $list = $safe{$file};
$safe{$file} = {};
foreach my $directive (@$list) {
$safe{$file}{$directive} = 0;
}
}
foreach my $file (@testitems) {
# There are some files we don't check, because there is no need to
# filter their contents due to their content-type.
if ($file =~ /\.(txt|png)\.tmpl$/) {
ok(1, "($lang/$flavor) $file is filter-safe");
next;
}
# Read the entire file into a string
open (FILE, "<$file") || die "Can't open $file: $!\n";
my $slurp = <FILE>;
close (FILE);
my @unfiltered;
# /g means we execute this loop for every match
# /s means we ignore linefeeds in the regexp matches
while ($slurp =~ /\[%(.*?)%\]/gs) {
my $directive = $1;
my @lineno = ($` =~ m/\n/gs);
my $lineno = scalar(@lineno) + 1;
# Comments
next if $directive =~ /^[+-]?#/;
# Remove any leading/trailing + or - and whitespace.
$directive =~ s/^[+-]?\s*//;
$directive =~ s/\s*[+-]?$//;
# Directives
next if $directive =~ /^(IF|END|UNLESS|FOREACH|PROCESS|INCLUDE|
BLOCK|USE|ELSE|NEXT|LAST|DEFAULT|FLUSH|
ELSIF|SET|SWITCH|CASE)/x;
# Simple assignments
next if $directive =~ /^[\w\.\$]+\s+=\s+/;
# Conditional literals with either sort of quotes
# There must be no $ in the string for it to be a literal
next if $directive =~ /^(["'])[^\$]*[^\\]\1/;
# Special values always used for numbers
next if $directive =~ /^[ijkn]$/;
next if $directive =~ /^count$/;
# Params
next if $directive =~ /^Param\(/;
# Other functions guaranteed to return OK output
next if $directive =~ /^(time2str|GetBugLink)\(/;
# Safe Template Toolkit virtual methods
next if $directive =~ /\.(size)$/;
# Special Template Toolkit loop variable
next if $directive =~ /^loop\.(index|count)$/;
# Things which are already filtered
# Note: If a single directive prints two things, and only one is
# filtered, we may not catch that case.
next if $directive =~ /FILTER\ (html|csv|js|url_quote|quoteUrls|
time|uri|xml)/x;
# Exclude those on the nofilter list
if (defined($safe{$file}{$directive})) {
$safe{$file}{$directive}++;
next;
};
# This intentionally makes no effort to eliminate duplicates; to do
# so would merely make it more likely that the user would not
# escape all instances when attempting to correct an error.
push(@unfiltered, "$lineno:$directive");
}
my $fullpath = File::Spec->catfile($path, $file);
if (@unfiltered) {
my $uflist = join("\n ", @unfiltered);
ok(0, "($lang/$flavor) $fullpath has unfiltered directives:\n $uflist\n--ERROR");
}
else {
# Find any members of the exclusion list which were not found
my @notfound;
foreach my $directive (keys %{$safe{$file}}) {
push(@notfound, $directive) if ($safe{$file}{$directive} == 0);
}
if (@notfound) {
my $nflist = join("\n ", @notfound);
ok(0, "($lang/$flavor) $fullpath - FEL has extra members:\n $nflist\n" .
"--WARNING");
}
else {
# Don't use the full path here - it's too long and unwieldy.
ok(1, "($lang/$flavor) $file is filter-safe");
}
}
}
}
$/ = $oldrecsep;
exit 0;
|
