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
|
#!./perl -Tw
BEGIN {
require Config; import Config;
if ($^O ne 'VMS' and $Config{'extensions'} !~ /\bPOSIX\b/) {
print "1..0\n";
exit 0;
}
}
use Test::More;
BEGIN {
plan(
${^TAINT}
? (tests => 7)
: (skip_all => "A perl without taint support")
);
}
use Scalar::Util qw/tainted/;
use POSIX qw(fcntl_h open read mkfifo);
use strict ;
$| = 1;
my $buffer;
my @buffer;
my $testfd;
# Sources of taint:
# The empty tainted value, for tainting strings
my $TAINT = substr($^X, 0, 0);
my $file = 'POSIX.xs';
eval { mkfifo($TAINT. $file, 0) };
like($@, qr/^Insecure dependency/, 'mkfifo with tainted data');
eval { $testfd = open($TAINT. $file, O_WRONLY, 0) };
like($@, qr/^Insecure dependency/, 'open with tainted data');
eval { $testfd = open($file, O_RDONLY, 0) };
is($@, "", 'open with untainted data');
read($testfd, $buffer, 2) if $testfd > 2;
is( $buffer, "#d", ' read' );
ok(tainted($buffer), ' scalar tainted');
TODO: {
local $TODO = "POSIX::read won't taint an array element";
read($testfd, $buffer[1], 2) if $testfd > 2;
is( $buffer[1], "./", ' read' );
ok(tainted($buffer[1]), ' array element tainted');
}
|
