#!./perl -T
#
# Taint tests by Tom Phoenix <[email protected]>.
#
# I don't claim to know all about tainting. If anyone sees
# tests that I've missed here, please add them. But this is
# better than having no tests at all, right?
#
BEGIN {
chdir 't' if -d 't';
@INC = '../lib';
}
use strict;
use Config;
use File::Spec::Functions;
my $test = 177;
sub ok ($;$) {
my($ok, $name) = @_;
# You have to do it this way or VMS will get confused.
print $ok ? "ok $test - $name\n" : "not ok $test - $name\n";
printf "# Failed test at line %d\n", (caller)[2] unless $ok;
$test++;
return $ok;
}
$| = 1;
use vars qw($ipcsysv); # did we manage to load IPC::SysV?
BEGIN {
if ($^O eq 'VMS' && !defined($Config{d_setenv})) {
$ENV{PATH} = $ENV{PATH};
$ENV{TERM} = $ENV{TERM} ne ''? $ENV{TERM} : 'dummy';
}
if ($Config{'extensions'} =~ /\bIPC\/SysV\b/
&& ($Config{d_shm} || $Config{d_msg})) {
eval { require IPC::SysV };
unless ($@) {
$ipcsysv++;
IPC::SysV->import(qw(IPC_PRIVATE IPC_RMID IPC_CREAT S_IRWXU));
}
}
}
my $Is_MacOS = $^O eq 'MacOS';
my $Is_VMS = $^O eq 'VMS';
my $Is_MSWin32 = $^O eq 'MSWin32';
my $Is_NetWare = $^O eq 'NetWare';
my $Is_Dos = $^O eq 'dos';
my $Is_Cygwin = $^O eq 'cygwin';
my $Invoke_Perl = $Is_VMS ? 'MCR Sys$Disk:[]Perl.' :
($Is_MSWin32 ? '.\perl' :
$Is_MacOS ? ':perl' :
($Is_NetWare ? 'perl' : './perl'));
my @MoreEnv = qw/IFS CDPATH ENV BASH_ENV/;
if ($Is_VMS) {
my (%old, $x);
for $x ('DCL$PATH', @MoreEnv) {
($old{$x}) = $ENV{$x} =~ /^(.*)$/ if exists $ENV{$x};
}
eval <<EndOfCleanup;
END {
\$ENV{PATH} = '' if $Config{d_setenv};
warn "# Note: logical name 'PATH' may have been deleted\n";
\@ENV{keys %old} = values %old;
}
EndOfCleanup
}
# Sources of taint:
# The empty tainted value, for tainting strings
my $TAINT = substr($^X, 0, 0);
# A tainted zero, useful for tainting numbers
my $TAINT0 = 0 + $TAINT;
# This taints each argument passed. All must be lvalues.
# Side effect: It also stringifies them. :-(
sub taint_these (@) {
for (@_) { $_ .= $TAINT }
}
# How to identify taint when you see it
sub any_tainted (@) {
not eval { join("",@_), kill 0; 1 };
}
sub tainted ($) {
any_tainted @_;
}
sub all_tainted (@) {
for (@_) { return 0 unless tainted $_ }
1;
}
sub test ($$;$) {
my($serial, $boolean, $diag) = @_;
if ($boolean) {
print "ok $serial\n";
} else {
print "not ok $serial\n";
for (split m/^/m, $diag) {
print "# $_";
}
print "\n" unless
$diag eq ''
or substr($diag, -1) eq "\n";
}
}
# We need an external program to call.
my $ECHO = ($Is_MSWin32 ? ".\\echo$$" : $Is_MacOS ? ":echo$$" : ($Is_NetWare ? "echo$$" : "./echo$$"));
END { unlink $ECHO }
open PROG, "> $ECHO" or die "Can't create $ECHO: $!";
print PROG 'print "@ARGV\n"', "\n";
close PROG;
my $echo = "$Invoke_Perl $ECHO";
my $TEST = catfile(curdir(), 'TEST');
print "1..205\n";
# First, let's make sure that Perl is checking the dangerous
# environment variables. Maybe they aren't set yet, so we'll
# taint them ourselves.
{
$ENV{'DCL$PATH'} = '' if $Is_VMS;
$ENV{PATH} = '';
delete @ENV{@MoreEnv};
$ENV{TERM} = 'dumb';
if ($Is_Cygwin && ! -f 'cygwin1.dll') {
system("/usr/bin/cp /usr/bin/cygwin1.dll .") &&
die "$0: failed to cp cygwin1.dll: $!\n";
END { unlink "cygwin1.dll" } # yes, done for all platforms...
}
test 1, eval { `$echo 1` } eq "1\n";
if ($Is_MSWin32 || $Is_NetWare || $Is_VMS || $Is_Dos || $Is_MacOS) {
print "# Environment tainting tests skipped\n";
for (2..5) { print "ok $_\n" }
}
else {
my @vars = ('PATH', @MoreEnv);
while (my $v = $vars[0]) {
local $ENV{$v} = $TAINT;
last if eval { `$echo 1` };
last unless $@ =~ /^Insecure \$ENV{$v}/;
shift @vars;
}
test 2, !@vars, "\$$vars[0]";
# tainted $TERM is unsafe only if it contains metachars
local $ENV{TERM};
$ENV{TERM} = 'e=mc2';
test 3, eval { `$echo 1` } eq "1\n";
$ENV{TERM} = 'e=mc2' . $TAINT;
test 4, eval { `$echo 1` } eq '';
test 5, $@ =~ /^Insecure \$ENV{TERM}/, $@;
}
my $tmp;
if ($^O eq 'os2' || $^O eq 'amigaos' || $Is_MSWin32 || $Is_NetWare || $Is_Dos) {
print "# all directories are writeable\n";
}
else {
$tmp = (grep { defined and -d and (stat _)[2] & 2 }
qw(sys$scratch /tmp /var/tmp /usr/tmp),
@ENV{qw(TMP TEMP)})[0]
or print "# can't find world-writeable directory to test PATH\n";
}
if ($tmp) {
local $ENV{PATH} = $tmp;
test 6, eval { `$echo 1` } eq '';
test 7, $@ =~ /^Insecure directory in \$ENV{PATH}/, $@;
}
else {
for (6..7) { print "ok $_ # Skipped: all directories are writeable\n" }
}
if ($Is_VMS) {
$ENV{'DCL$PATH'} = $TAINT;
test 8, eval { `$echo 1` } eq '';
test 9, $@ =~ /^Insecure \$ENV{DCL\$PATH}/, $@;
if ($tmp) {
$ENV{'DCL$PATH'} = $tmp;
test 10, eval { `$echo 1` } eq '';
test 11, $@ =~ /^Insecure directory in \$ENV{DCL\$PATH}/, $@;
}
else {
for (10..11) { print "ok $_ # Skipped: can't find world-writeable directory to test DCL\$PATH\n" }
}
$ENV{'DCL$PATH'} = '';
}
else {
for (8..11) { print "ok $_ # Skipped: This is not VMS\n"; }
}
}
# Let's see that we can taint and untaint as needed.
{
my $foo = $TAINT;
test 12, tainted $foo;
# That was a sanity check. If it failed, stop the insanity!
die "Taint checks don't seem to be enabled" unless tainted $foo;
$foo = "foo";
test 13, not tainted $foo;
taint_these($foo);
test 14, tainted $foo;
my @list = 1..10;
test 15, not any_tainted @list;
taint_these @list[1,3,5,7,9];
test 16, any_tainted @list;
test 17, all_tainted @list[1,3,5,7,9];
test 18, not any_tainted @list[0,2,4,6,8];
($foo) = $foo =~ /(.+)/;
test 19, not tainted $foo;
$foo = $1 if ('bar' . $TAINT) =~ /(.+)/;
test 20, not tainted $foo;
test 21, $foo eq 'bar';
{
use re 'taint';
($foo) = ('bar' . $TAINT) =~ /(.+)/;
test 22, tainted $foo;
test 23, $foo eq 'bar';
$foo = $1 if ('bar' . $TAINT) =~ /(.+)/;
test 24, tainted $foo;
test 25, $foo eq 'bar';
}
$foo = $1 if 'bar' =~ /(.+)$TAINT/;
test 26, tainted $foo;
test 27, $foo eq 'bar';
my $pi = 4 * atan2(1,1) + $TAINT0;
test 28, tainted $pi;
($pi) = $pi =~ /(\d+\.\d+)/;
test 29, not tainted $pi;
test 30, sprintf("%.5f", $pi) eq '3.14159';
}
# How about command-line arguments? The problem is that we don't
# always get some, so we'll run another process with some.
SKIP: {
my $arg = catfile(curdir(), "arg$$");
open PROG, "> $arg" or die "Can't create $arg: $!";
print PROG q{
eval { join('', @ARGV), kill 0 };
exit 0 if $@ =~ /^Insecure dependency/;
print "# Oops: \$@ was [$@]\n";
exit 1;
};
close PROG;
print `$Invoke_Perl "-T" $arg and some suspect arguments`;
test 31, !$?, "Exited with status $?";
unlink $arg;
}
# Reading from a file should be tainted
{
test 32, open(FILE, $TEST), "Couldn't open '$TEST': $!";
my $block;
sysread(FILE, $block, 100);
my $line = <FILE>;
close FILE;
test 33, tainted $block;
test 34, tainted $line;
}
# Globs should be forbidden, except under VMS,
# which doesn't spawn an external program.
if (1 # built-in glob
or $Is_VMS) {
for (35..36) { print "ok $_\n"; }
}
else {
my @globs = eval { <*> };
test 35, @globs == 0 && $@ =~ /^Insecure dependency/;
@globs = eval { glob '*' };
test 36, @globs == 0 && $@ =~ /^Insecure dependency/;
}
# Output of commands should be tainted
{
my $foo = `$echo abc`;
test 37, tainted $foo;
}
# Certain system variables should be tainted
{
test 38, all_tainted $^X, $0;
}
# Results of matching should all be untainted
{
my $foo = "abcdefghi" . $TAINT;
test 39, tainted $foo;
$foo =~ /def/;
test 40, not any_tainted $`, $&, $';
$foo =~ /(...)(...)(...)/;
test 41, not any_tainted $1, $2, $3, $+;
my @bar = $foo =~ /(...)(...)(...)/;
test 42, not any_tainted @bar;
test 43, tainted $foo; # $foo should still be tainted!
test 44, $foo eq "abcdefghi";
}
# Operations which affect files can't use tainted data.
{
test 45, eval { chmod 0, $TAINT } eq '', 'chmod';
test 46, $@ =~ /^Insecure dependency/, $@;
# There is no feature test in $Config{} for truncate,
# so we allow for the possibility that it's missing.
test 47, eval { truncate 'NoSuChFiLe', $TAINT0 } eq '', 'truncate';
test 48, $@ =~ /^(?:Insecure dependency|truncate not implemented)/, $@;
test 49, eval { rename '', $TAINT } eq '', 'rename';
test 50, $@ =~ /^Insecure dependency/, $@;
test 51, eval { unlink $TAINT } eq '', 'unlink';
test 52, $@ =~ /^Insecure dependency/, $@;
test 53, eval { utime $TAINT } eq '', 'utime';
test 54, $@ =~ /^Insecure dependency/, $@;
if ($Config{d_chown}) {
test 55, eval { chown -1, -1, $TAINT } eq '', 'chown';
test 56, $@ =~ /^Insecure dependency/, $@;
}
else {
for (55..56) { print "ok $_ # Skipped: chown() is not available\n" }
}
if ($Config{d_link}) {
test 57, eval { link $TAINT, '' } eq '', 'link';
test 58, $@ =~ /^Insecure dependency/, $@;
}
else {
for (57..58) { print "ok $_ # Skipped: link() is not available\n" }
}
if ($Config{d_symlink}) {
test 59, eval { symlink $TAINT, '' } eq '', 'symlink';
test 60, $@ =~ /^Insecure dependency/, $@;
}
else {
for (59..60) { print "ok $_ # Skipped: symlink() is not available\n" }
}
}
# Operations which affect directories can't use tainted data.
{
test 61, eval { mkdir $TAINT0, $TAINT } eq '', 'mkdir';
test 62, $@ =~ /^Insecure dependency/, $@;
test 63, eval { rmdir $TAINT } eq '', 'rmdir';
test 64, $@ =~ /^Insecure dependency/, $@;
test 65, eval { chdir $TAINT } eq '', 'chdir';
test 66, $@ =~ /^Insecure dependency/, $@;
if ($Config{d_chroot}) {
test 67, eval { chroot $TAINT } eq '', 'chroot';
test 68, $@ =~ /^Insecure dependency/, $@;
}
else {
for (67..68) { print "ok $_ # Skipped: chroot() is not available\n" }
}
}
# Some operations using files can't use tainted data.
{
my $foo = "imaginary library" . $TAINT;
test 69, eval { require $foo } eq '', 'require';
test 70, $@ =~ /^Insecure dependency/, $@;
my $filename = "./taintB$$"; # NB: $filename isn't tainted!
END { unlink $filename if defined $filename }
$foo = $filename . $TAINT;
unlink $filename; # in any case
test 71, eval { open FOO, $foo } eq '', 'open for read';
test 72, $@ eq '', $@; # NB: This should be allowed
# Try first new style but allow also old style.
# We do not want the whole taint.t to fail
# just because Errno possibly failing.
test 73, eval('$!{ENOENT}') ||
$! == 2 || # File not found
($Is_Dos && $! == 22) ||
($^O eq 'mint' && $! == 33);
test 74, eval { open FOO, "> $foo" } eq '', 'open for write';
test 75, $@ =~ /^Insecure dependency/, $@;
}
# Commands to the system can't use tainted data
{
my $foo = $TAINT;
if ($^O eq 'amigaos') {
for (76..79) { print "ok $_ # Skipped: open('|') is not available\n" }
}
else {
test 76, eval { open FOO, "| x$foo" } eq '', 'popen to';
test 77, $@ =~ /^Insecure dependency/, $@;
test 78, eval { open FOO, "x$foo |" } eq '', 'popen from';
test 79, $@ =~ /^Insecure dependency/, $@;
}
test 80, eval { exec $TAINT } eq '', 'exec';
test 81, $@ =~ /^Insecure dependency/, $@;
test 82, eval { system $TAINT } eq '', 'system';
test 83, $@ =~ /^Insecure dependency/, $@;
$foo = "*";
taint_these $foo;
test 84, eval { `$echo 1$foo` } eq '', 'backticks';
test 85, $@ =~ /^Insecure dependency/, $@;
if ($Is_VMS) { # wildcard expansion doesn't invoke shell, so is safe
test 86, join('', eval { glob $foo } ) ne '', 'globbing';
test 87, $@ eq '', $@;
}
else {
for (86..87) { print "ok $_ # Skipped: This is not VMS\n"; }
}
}
# Operations which affect processes can't use tainted data.
{
test 88, eval { kill 0, $TAINT } eq '', 'kill';
test 89, $@ =~ /^Insecure dependency/, $@;
if ($Config{d_setpgrp}) {
test 90, eval { setpgrp 0, $TAINT } eq '', 'setpgrp';
test 91, $@ =~ /^Insecure dependency/, $@;
}
else {
for (90..91) { print "ok $_ # Skipped: setpgrp() is not available\n" }
}
if ($Config{d_setprior}) {
test 92, eval { setpriority 0, $TAINT, $TAINT } eq '', 'setpriority';
test 93, $@ =~ /^Insecure dependency/, $@;
}
else {
for (92..93) { print "ok $_ # Skipped: setpriority() is not available\n" }
}
}
# Some miscellaneous operations can't use tainted data.
{
if ($Config{d_syscall}) {
test 94, eval { syscall $TAINT } eq '', 'syscall';
test 95, $@ =~ /^Insecure dependency/, $@;
}
else {
for (94..95) { print "ok $_ # Skipped: syscall() is not available\n" }
}
{
my $foo = "x" x 979;
taint_these $foo;
local *FOO;
my $temp = "./taintC$$";
END { unlink $temp }
test 96, open(FOO, "> $temp"), "Couldn't open $temp for write: $!";
test 97, eval { ioctl FOO, $TAINT, $foo } eq '', 'ioctl';
test 98, $@ =~ /^Insecure dependency/, $@;
if ($Config{d_fcntl}) {
test 99, eval { fcntl FOO, $TAINT, $foo } eq '', 'fcntl';
test 100, $@ =~ /^Insecure dependency/, $@;
}
else {
for (99..100) { print "ok $_ # Skipped: fcntl() is not available\n" }
}
close FOO;
}
}
# Some tests involving references
{
my $foo = 'abc' . $TAINT;
my $fooref = \$foo;
test 101, not tainted $fooref;
test 102, tainted $$fooref;
test 103, tainted $foo;
}
# Some tests involving assignment
{
my $foo = $TAINT0;
my $bar = $foo;
test 104, all_tainted $foo, $bar;
test 105, tainted($foo = $bar);
test 106, tainted($bar = $bar);
test 107, tainted($bar += $bar);
test 108, tainted($bar -= $bar);
test 109, tainted($bar *= $bar);
test 110, tainted($bar++);
test 111, tainted($bar /= $bar);
test 112, tainted($bar += 0);
test 113, tainted($bar -= 2);
test 114, tainted($bar *= -1);
test 115, tainted($bar /= 1);
test 116, tainted($bar--);
test 117, $bar == 0;
}
# Test assignment and return of lists
{
my @foo = ("A", "tainted" . $TAINT, "B");
test 118, not tainted $foo[0];
test 119, tainted $foo[1];
test 120, not tainted $foo[2];
my @bar = @foo;
test 121, not tainted $bar[0];
test 122, tainted $bar[1];
test 123, not tainted $bar[2];
my @baz = eval { "A", "tainted" . $TAINT, "B" };
test 124, not tainted $baz[0];
test 125, tainted $baz[1];
test 126, not tainted $baz[2];
my @plugh = eval q[ "A", "tainted" . $TAINT, "B" ];
test 127, not tainted $plugh[0];
test 128, tainted $plugh[1];
test 129, not tainted $plugh[2];
my $nautilus = sub { "A", "tainted" . $TAINT, "B" };
test 130, not tainted ((&$nautilus)[0]);
test 131, tainted ((&$nautilus)[1]);
test 132, not tainted ((&$nautilus)[2]);
my @xyzzy = &$nautilus;
test 133, not tainted $xyzzy[0];
test 134, tainted $xyzzy[1];
test 135, not tainted $xyzzy[2];
my $red_october = sub { return "A", "tainted" . $TAINT, "B" };
test 136, not tainted ((&$red_october)[0]);
test 137, tainted ((&$red_october)[1]);
test 138, not tainted ((&$red_october)[2]);
my @corge = &$red_october;
test 139, not tainted $corge[0];
test 140, tainted $corge[1];
test 141, not tainted $corge[2];
}
# Test for system/library calls returning string data of dubious origin.
{
# No reliable %Config check for getpw*
if (eval { setpwent(); getpwent() }) {
setpwent();
my @getpwent = getpwent();
die "getpwent: $!\n" unless (@getpwent);
test 142,( not tainted $getpwent[0]
and tainted $getpwent[1]
and not tainted $getpwent[2]
and not tainted $getpwent[3]
and not tainted $getpwent[4]
and not tainted $getpwent[5]
and tainted $getpwent[6] # ge?cos
and not tainted $getpwent[7]
and tainted $getpwent[8]); # shell
endpwent();
} else {
for (142) { print "ok $_ # Skipped: getpwent() is not available\n" }
}
if ($Config{d_readdir}) { # pretty hard to imagine not
local(*D);
opendir(D, "op") or die "opendir: $!\n";
my $readdir = readdir(D);
test 143, tainted $readdir;
closedir(OP);
} else {
for (143) { print "ok $_ # Skipped: readdir() is not available\n" }
}
if ($Config{d_readlink} && $Config{d_symlink}) {
my $symlink = "sl$$";
unlink($symlink);
my $sl = "/something/naughty";
# it has to be a real path on Mac OS
$sl = MacPerl::MakePath((MacPerl::Volumes())[0]) if $Is_MacOS;
symlink($sl, $symlink) or die "symlink: $!\n";
my $readlink = readlink($symlink);
test 144, tainted $readlink;
unlink($symlink);
} else {
for (144) { print "ok $_ # Skipped: readlink() or symlink() is not available\n"; }
}
}
# test bitwise ops (regression bug)
{
my $why = "y";
my $j = "x" | $why;
test 145, not tainted $j;
$why = $TAINT."y";
$j = "x" | $why;
test 146, tainted $j;
}
# test target of substitution (regression bug)
{
my $why = $TAINT."y";
$why =~ s/y/z/;
test 147, tainted $why;
my $z = "[z]";
$why =~ s/$z/zee/;
test 148, tainted $why;
$why =~ s/e/'-'.$$/ge;
test 149, tainted $why;
}
# test shmread
{
unless ($ipcsysv) {
print "ok 150 # skipped: no IPC::SysV\n";
last;
}
if ($Config{'extensions'} =~ /\bIPC\/SysV\b/ && $Config{d_shm}) {
no strict 'subs';
my $sent = "foobar";
my $rcvd;
my $size = 2000;
my $id = shmget(IPC_PRIVATE, $size, S_IRWXU);
if (defined $id) {
if (shmwrite($id, $sent, 0, 60)) {
if (shmread($id, $rcvd, 0, 60)) {
substr($rcvd, index($rcvd, "\0")) = '';
} else {
warn "# shmread failed: $!\n";
}
} else {
warn "# shmwrite failed: $!\n";
}
shmctl($id, IPC_RMID, 0) or warn "# shmctl failed: $!\n";
} else {
warn "# shmget failed: $!\n";
}
if ($rcvd eq $sent) {
test 150, tainted $rcvd;
} else {
print "ok 150 # Skipped: SysV shared memory operation failed\n";
}
} else {
print "ok 150 # Skipped: SysV shared memory is not available\n";
}
}
# test msgrcv
{
unless ($ipcsysv) {
print "ok 151 # skipped: no IPC::SysV\n";
last;
}
if ($Config{'extensions'} =~ /\bIPC\/SysV\b/ && $Config{d_msg}) {
no strict 'subs';
my $id = msgget(IPC_PRIVATE, IPC_CREAT | S_IRWXU);
my $sent = "message";
my $type_sent = 1234;
my $rcvd;
my $type_rcvd;
if (defined $id) {
if (msgsnd($id, pack("l! a*", $type_sent, $sent), 0)) {
if (msgrcv($id, $rcvd, 60, 0, 0)) {
($type_rcvd, $rcvd) = unpack("l! a*", $rcvd);
} else {
warn "# msgrcv failed\n";
}
} else {
warn "# msgsnd failed\n";
}
msgctl($id, IPC_RMID, 0) or warn "# msgctl failed: $!\n";
} else {
warn "# msgget failed\n";
}
if ($rcvd eq $sent && $type_sent == $type_rcvd) {
test 151, tainted $rcvd;
} else {
print "ok 151 # Skipped: SysV message queue operation failed\n";
}
} else {
print "ok 151 # Skipped: SysV message queues are not available\n";
}
}
{
# bug id 20001004.006
open IN, $TEST or warn "$0: cannot read $TEST: $!" ;
local $/;
my $a = <IN>;
my $b = <IN>;
print "not " unless tainted($a) && tainted($b) && !defined($b);
print "ok 152\n";
close IN;
}
{
# bug id 20001004.007
open IN, $TEST or warn "$0: cannot read $TEST: $!" ;
my $a = <IN>;
my $c = { a => 42,
b => $a };
print "not " unless !tainted($c->{a}) && tainted($c->{b});
print "ok 153\n";
my $d = { a => $a,
b => 42 };
print "not " unless tainted($d->{a}) && !tainted($d->{b});
print "ok 154\n";
my $e = { a => 42,
b => { c => $a, d => 42 } };
print "not " unless !tainted($e->{a}) &&
!tainted($e->{b}) &&
tainted($e->{b}->{c}) &&
!tainted($e->{b}->{d});
print "ok 155\n";
close IN;
}
{
# bug id 20010519.003
BEGIN {
use vars qw($has_fcntl);
eval { require Fcntl; import Fcntl; };
unless ($@) {
$has_fcntl = 1;
}
}
unless ($has_fcntl) {
for (156..173) {
print "ok $_ # Skip: no Fcntl (no dynaloading?)\n";
}
} else {
my $evil = "foo" . $TAINT;
eval { sysopen(my $ro, $evil, &O_RDONLY) };
test 156, $@ !~ /^Insecure dependency/, $@;
eval { sysopen(my $wo, $evil, &O_WRONLY) };
test 157, $@ =~ /^Insecure dependency/, $@;
eval { sysopen(my $rw, $evil, &O_RDWR) };
test 158, $@ =~ /^Insecure dependency/, $@;
eval { sysopen(my $ap, $evil, &O_APPEND) };
test 159, $@ =~ /^Insecure dependency/, $@;
eval { sysopen(my $cr, $evil, &O_CREAT) };
test 160, $@ =~ /^Insecure dependency/, $@;
eval { sysopen(my $tr, $evil, &O_TRUNC) };
test 161, $@ =~ /^Insecure dependency/, $@;
eval { sysopen(my $ro, "foo", &O_RDONLY | $evil) };
test 162, $@ !~ /^Insecure dependency/, $@;
eval { sysopen(my $wo, "foo", &O_WRONLY | $evil) };
test 163, $@ =~ /^Insecure dependency/, $@;
eval { sysopen(my $rw, "foo", &O_RDWR | $evil) };
test 164, $@ =~ /^Insecure dependency/, $@;
eval { sysopen(my $ap, "foo", &O_APPEND | $evil) };
test 165, $@ =~ /^Insecure dependency/, $@;
eval { sysopen(my $cr, "foo", &O_CREAT | $evil) };
test 166, $@ =~ /^Insecure dependency/, $@;
eval { sysopen(my $tr, "foo", &O_TRUNC | $evil) };
test 167, $@ =~ /^Insecure dependency/, $@;
eval { sysopen(my $ro, "foo", &O_RDONLY, $evil) };
test 168, $@ !~ /^Insecure dependency/, $@;
eval { sysopen(my $wo, "foo", &O_WRONLY, $evil) };
test 169, $@ =~ /^Insecure dependency/, $@;
eval { sysopen(my $rw, "foo", &O_RDWR, $evil) };
test 170, $@ =~ /^Insecure dependency/, $@;
eval { sysopen(my $ap, "foo", &O_APPEND, $evil) };
test 171, $@ =~ /^Insecure dependency/, $@;
eval { sysopen(my $cr, "foo", &O_CREAT, $evil) };
test 172, $@ =~ /^Insecure dependency/, $@;
eval { sysopen(my $tr, "foo", &O_TRUNC, $evil) };
test 173, $@ =~ /^Insecure dependency/, $@;
unlink("foo"); # not unlink($evil), because that would fail...
}
}
{
# bug 20010526.004
use warnings;
local $SIG{__WARN__} = sub { print "not " };
sub fmi {
my $divnum = shift()/1;
sprintf("%1.1f\n", $divnum);
}
fmi(21 . $TAINT);
fmi(37);
fmi(248);
print "ok 174\n";
}
{
# Bug ID 20010730.010
my $i = 0;
sub Tie::TIESCALAR {
my $class = shift;
my $arg = shift;
bless \$arg => $class;
}
sub Tie::FETCH {
$i ++;
${$_ [0]}
}
package main;
my $bar = "The Big Bright Green Pleasure Machine";
taint_these $bar;
tie my ($foo), Tie => $bar;
my $baz = $foo;
print $i == 1 ? "ok 175\n" : "not ok 175\n"
}
{
# Check that all environment variables are tainted.
my @untainted;
while (my ($k, $v) = each %ENV) {
if (!tainted($v) &&
# These we have untainted explicitly earlier.
$k !~ /^(BASH_ENV|CDPATH|ENV|IFS|PATH|TEMP|TERM|TMP)$/) {
push @untainted, "# '$k' = '$v'\n";
}
}
print @untainted == 0 ? "ok 176\n" : "not ok 176\n";
print "# untainted:\n", @untainted if @untainted;
}
ok( ${^TAINT}, '$^TAINT is on' );
eval { ${^TAINT} = 0 };
ok( ${^TAINT}, '$^TAINT is not assignable' );
ok( $@ =~ /^Modification of a read-only value attempted/,
'Assigning to ${^TAINT} fails' );
{
# bug 20011111.105
my $re1 = qr/x$TAINT/;
test 180, tainted $re1;
my $re2 = qr/^$re1\z/;
test 181, tainted $re2;
my $re3 = "$re2";
test 182, tainted $re3;
}
if ($Is_MSWin32) {
print "ok 183 # Skipped: system {} has different semantics\n";
}
else
{
# bug 20010221.005
local $ENV{PATH} .= $TAINT;
eval { system { "echo" } "/arg0", "arg1" };
test 183, $@ =~ /^Insecure \$ENV/;
}
if ($Is_VMS) {
for (184..205) {print "not ok $_ # TODO tainted %ENV warning occludes tainted arguments warning\n";}
}
else
{
# bug 20020208.005 plus some extras
# single arg exec/system are tests 80-83
use if $] lt '5.009', warnings => FATAL => 'taint';
my $err = $] ge '5.009' ? qr/^Insecure dependency/
: qr/^Use of tainted arguments/;
test 184, eval { exec $TAINT, $TAINT } eq '', 'exec';
test 185, $@ =~ $err, $@;
test 186, eval { exec $TAINT $TAINT } eq '', 'exec';
test 187, $@ =~ $err, $@;
test 188, eval { exec $TAINT $TAINT, $TAINT } eq '', 'exec';
test 189, $@ =~ $err, $@;
test 190, eval { exec $TAINT 'notaint' } eq '', 'exec';
test 191, $@ =~ $err, $@;
test 192, eval { exec {'notaint'} $TAINT } eq '', 'exec';
test 193, $@ =~ $err, $@;
test 194, eval { system $TAINT, $TAINT } eq '', 'system';
test 195, $@ =~ $err, $@;
test 196, eval { system $TAINT $TAINT } eq '', 'system';
test 197, $@ =~ $err, $@;
test 198, eval { system $TAINT $TAINT, $TAINT } eq '', 'system';
test 199, $@ =~ $err, $@;
test 200, eval { system $TAINT 'notaint' } eq '', 'system';
test 201, $@ =~ $err, $@;
test 202, eval { system {'notaint'} $TAINT } eq '', 'system';
test 203, $@ =~ $err, $@;
eval { system("lskdfj does not exist","with","args"); };
test 204, $@ eq '';
eval { exec("lskdfj does not exist","with","args"); };
test 205, $@ eq '';
# If you add tests here update also the above skip block for VMS.
}
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