# Taint tests by Tom Phoenix <rootbeer@teleport.com>.
#
# I don't claim to know all about tainting. If anyone sees
-# tests that I've missed here, please add them. But this is
+# tests that I've missed here, please add them. But this is
# better than having no tests at all, right?
#
use Config;
my $Is_VMS = $^O eq 'VMS';
-my $Invoke_Perl = $Is_VMS ? 'MCR Sys$Disk:[]Perl.' : './perl';
+my $Is_MSWin32 = $^O eq 'MSWin32';
+my $Invoke_Perl = $Is_VMS ? 'MCR Sys$Disk:[]Perl.' :
+ $Is_MSWin32 ? '.\perl' : './perl';
if ($Is_VMS) {
+ my ($olddcl) = $ENV{'DCL$PATH'} =~ /^(.*)$/;
+ my ($oldifs) = $ENV{IFS} =~ /^(.*)$/;
eval <<EndOfCleanup;
END {
\$ENV{PATH} = '';
warn "# Note: logical name 'PATH' may have been deleted\n";
- \$ENV{IFS} = "$ENV{IFS}";
- \$ENV{'DCL\$PATH'} = "$ENV{'DCL$PATH'}";
+ \$ENV{IFS} = \$oldifs;
+ \$ENV{'DCL\$PATH'} = \$olddcl;
}
EndOfCleanup
}
for (split m/^/m, $diag) {
print "# $_";
}
- print "\n" unless
+ print "\n" unless
$diag eq ''
or substr($diag, -1) eq "\n";
}
}
# We need an external program to call.
-my $ECHO = "./echo$$";
+my $ECHO = ($Is_MSWin32 ? ".\\echo$$" : "./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";
-print "1..96\n";
+print "1..112\n";
# First, let's make sure that Perl is checking the dangerous
# environment variables. Maybe they aren't set yet, so we'll
{
$ENV{'DCL$PATH'} = '' if $Is_VMS;
- $ENV{PATH} = $TAINT;
- $ENV{IFS} = '';
- test 1, eval { `$echo 1` } eq '';
- test 2, $@ =~ /^Insecure \$ENV{PATH}/, $@;
-
- $ENV{PATH} = '';
- $ENV{IFS} = $TAINT;
- test 3, eval { `$echo 1` } eq '';
- test 4, $@ =~ /^Insecure \$ENV{IFS}/, $@;
+ if ($Is_MSWin32) {
+ print "# PATH/IFS tainting tests skipped\n";
+ for (1..4) { print "ok $_\n" }
+ }
+ else {
+ $ENV{PATH} = $TAINT;
+ $ENV{IFS} = " \t\n";
+ test 1, eval { `$echo 1` } eq '';
+ test 2, $@ =~ /^Insecure \$ENV{PATH}/, $@;
+
+ $ENV{PATH} = '';
+ $ENV{IFS} = $TAINT;
+ test 3, eval { `$echo 1` } eq '';
+ test 4, $@ =~ /^Insecure \$ENV{IFS}/, $@;
+ }
+ my $tmp;
+ if ($^O eq 'os2' || $^O eq 'amigaos' || $Is_MSWin32) {
+ print "# all directories are writeable\n";
+ }
+ else {
+ $tmp = (grep { defined and -d and (stat _)[2] & 2 }
+ qw(/tmp /var/tmp /usr/tmp /sys$scratch),
+ @ENV{qw(TMP TEMP)})[0]
+ or print "# can't find world-writeable directory to test PATH\n";
+ }
- my ($tmp) = grep { (stat)[2] & 2 } '/tmp', '/var/tmp', '/usr/tmp';
- if ($tmp and $^O ne 'os2') { # All dirs are writable under OS/2
+ if ($tmp) {
$ENV{PATH} = $tmp;
- $ENV{IFS} = '';
+ $ENV{IFS} = " \t\n";
test 5, eval { `$echo 1` } eq '';
test 6, $@ =~ /^Insecure directory in \$ENV{PATH}/, $@;
}
else {
- print "# can't find writeable directory to test PATH tainting\n";
for (5..6) { print "ok $_\n" }
}
$ENV{PATH} = '';
- $ENV{IFS} = '';
+ $ENV{IFS} = " \t\n";
test 7, eval { `$echo 1` } eq "1\n";
test 8, $@ eq '', $@;
$ENV{'DCL$PATH'} = $TAINT;
test 9, eval { `$echo 1` } eq '';
test 10, $@ =~ /^Insecure \$ENV{DCL\$PATH}/, $@;
+ if ($tmp) {
+ $ENV{'DCL$PATH'} = $tmp;
+ test 11, eval { `$echo 1` } eq '';
+ test 12, $@ =~ /^Insecure directory in \$ENV{DCL\$PATH}/, $@;
+ }
+ else {
+ print "# can't find world-writeable directory to test DCL\$PATH\n";
+ for (11..12) { print "ok $_\n" }
+ }
$ENV{'DCL$PATH'} = '';
}
else {
print "# This is not VMS\n";
- for (9..10) { print "ok $_\n"; }
+ for (9..12) { print "ok $_\n"; }
}
}
# Let's see that we can taint and untaint as needed.
{
my $foo = $TAINT;
- test 11, tainted $foo;
+ test 13, 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 12, not tainted $foo;
+ test 14, not tainted $foo;
taint_these($foo);
- test 13, tainted $foo;
+ test 15, tainted $foo;
my @list = 1..10;
- test 14, not any_tainted @list;
+ test 16, not any_tainted @list;
taint_these @list[1,3,5,7,9];
- test 15, any_tainted @list;
- test 16, all_tainted @list[1,3,5,7,9];
- test 17, not any_tainted @list[0,2,4,6,8];
+ test 17, any_tainted @list;
+ test 18, all_tainted @list[1,3,5,7,9];
+ test 19, not any_tainted @list[0,2,4,6,8];
($foo) = $foo =~ /(.+)/;
- test 18, not tainted $foo;
+ test 20, not tainted $foo;
$foo = $1 if ('bar' . $TAINT) =~ /(.+)/;
- test 19, not tainted $foo;
- test 20, $foo eq 'bar';
+ test 21, not tainted $foo;
+ test 22, $foo eq 'bar';
my $pi = 4 * atan2(1,1) + $TAINT0;
- test 21, tainted $pi;
+ test 23, tainted $pi;
($pi) = $pi =~ /(\d+\.\d+)/;
- test 22, not tainted $pi;
- test 23, sprintf("%.5f", $pi) eq '3.14159';
+ test 24, not tainted $pi;
+ test 25, sprintf("%.5f", $pi) eq '3.14159';
}
# How about command-line arguments? The problem is that we don't
};
close PROG;
print `$Invoke_Perl "-T" $arg and some suspect arguments`;
- test 24, !$?, "Exited with status $?";
+ test 26, !$?, "Exited with status $?";
unlink $arg;
}
# Reading from a file should be tainted
{
- my $file = './perl' . $Config{exe_ext};
- test 25, open(FILE, $file), "Couldn't open '$file': $!";
+ my $file = './TEST';
+ test 27, open(FILE, $file), "Couldn't open '$file': $!";
my $block;
sysread(FILE, $block, 100);
- my $line = <FILE>; # Should "work"
+ my $line = <FILE>;
close FILE;
- test 26, tainted $block;
- test 27, tainted $line;
+ test 28, tainted $block;
+ test 29, tainted $line;
}
-# Globs should be tainted.
+# Globs should be tainted.
{
+ # Some glob implementations need to spawn system programs.
+ local $ENV{PATH} = '';
+ $ENV{PATH} = (-l '/bin' ? '' : '/bin:') . '/usr/bin' unless $Is_VMS;
+
my @globs = <*>;
- test 28, all_tainted @globs;
+ test 30, all_tainted @globs;
@globs = glob '*';
- test 29, all_tainted @globs;
+ test 31, all_tainted @globs;
}
# Output of commands should be tainted
{
my $foo = `$echo abc`;
- test 30, tainted $foo;
+ test 32, tainted $foo;
}
# Certain system variables should be tainted
{
- test 31, all_tainted $^X, $0;
+ test 33, all_tainted $^X, $0;
}
# Results of matching should all be untainted
{
my $foo = "abcdefghi" . $TAINT;
- test 32, tainted $foo;
+ test 34, tainted $foo;
$foo =~ /def/;
- test 33, not any_tainted $`, $&, $';
+ test 35, not any_tainted $`, $&, $';
$foo =~ /(...)(...)(...)/;
- test 34, not any_tainted $1, $2, $3, $+;
+ test 36, not any_tainted $1, $2, $3, $+;
my @bar = $foo =~ /(...)(...)(...)/;
- test 35, not any_tainted @bar;
+ test 37, not any_tainted @bar;
- test 36, tainted $foo; # $foo should still be tainted!
- test 37, $foo eq "abcdefghi";
+ test 38, tainted $foo; # $foo should still be tainted!
+ test 39, $foo eq "abcdefghi";
}
# Operations which affect files can't use tainted data.
{
- test 38, eval { chmod 0, $TAINT } eq '', 'chmod';
- test 39, $@ =~ /^Insecure dependency/, $@;
-
- test 40, eval { truncate 'NoSuChFiLe', $TAINT0 } eq '', 'truncate';
+ test 40, eval { chmod 0, $TAINT } eq '', 'chmod';
test 41, $@ =~ /^Insecure dependency/, $@;
- test 42, eval { rename '', $TAINT } eq '', 'rename';
- test 43, $@ =~ /^Insecure dependency/, $@;
+ # There is no feature test in $Config{} for truncate,
+ # so we allow for the possibility that it's missing.
+ test 42, eval { truncate 'NoSuChFiLe', $TAINT0 } eq '', 'truncate';
+ test 43, $@ =~ /^(?:Insecure dependency|truncate not implemented)/, $@;
- test 44, eval { unlink $TAINT } eq '', 'unlink';
+ test 44, eval { rename '', $TAINT } eq '', 'rename';
test 45, $@ =~ /^Insecure dependency/, $@;
- test 46, eval { utime $TAINT } eq '', 'utime';
+ test 46, eval { unlink $TAINT } eq '', 'unlink';
test 47, $@ =~ /^Insecure dependency/, $@;
+ test 48, eval { utime $TAINT } eq '', 'utime';
+ test 49, $@ =~ /^Insecure dependency/, $@;
+
if ($Config{d_chown}) {
- test 48, eval { chown -1, -1, $TAINT } eq '', 'chown';
- test 49, $@ =~ /^Insecure dependency/, $@;
+ test 50, eval { chown -1, -1, $TAINT } eq '', 'chown';
+ test 51, $@ =~ /^Insecure dependency/, $@;
}
else {
print "# chown() is not available\n";
- for (48..49) { print "ok $_\n" }
+ for (50..51) { print "ok $_\n" }
}
if ($Config{d_link}) {
- test 50, eval { link $TAINT, '' } eq '', 'link';
- test 51, $@ =~ /^Insecure dependency/, $@;
+ test 52, eval { link $TAINT, '' } eq '', 'link';
+ test 53, $@ =~ /^Insecure dependency/, $@;
}
else {
print "# link() is not available\n";
- for (50..51) { print "ok $_\n" }
+ for (52..53) { print "ok $_\n" }
}
if ($Config{d_symlink}) {
- test 52, eval { symlink $TAINT, '' } eq '', 'symlink';
- test 53, $@ =~ /^Insecure dependency/, $@;
+ test 54, eval { symlink $TAINT, '' } eq '', 'symlink';
+ test 55, $@ =~ /^Insecure dependency/, $@;
}
else {
print "# symlink() is not available\n";
- for (52..53) { print "ok $_\n" }
+ for (54..55) { print "ok $_\n" }
}
}
# Operations which affect directories can't use tainted data.
{
- test 54, eval { mkdir $TAINT0, $TAINT } eq '', 'mkdir';
- test 55, $@ =~ /^Insecure dependency/, $@;
-
- test 56, eval { rmdir $TAINT } eq '', 'rmdir';
+ test 56, eval { mkdir $TAINT0, $TAINT } eq '', 'mkdir';
test 57, $@ =~ /^Insecure dependency/, $@;
- test 58, eval { chdir $TAINT } eq '', 'chdir';
+ test 58, eval { rmdir $TAINT } eq '', 'rmdir';
test 59, $@ =~ /^Insecure dependency/, $@;
+ test 60, eval { chdir $TAINT } eq '', 'chdir';
+ test 61, $@ =~ /^Insecure dependency/, $@;
+
if ($Config{d_chroot}) {
- test 60, eval { chroot $TAINT } eq '', 'chroot';
- test 61, $@ =~ /^Insecure dependency/, $@;
+ test 62, eval { chroot $TAINT } eq '', 'chroot';
+ test 63, $@ =~ /^Insecure dependency/, $@;
}
else {
print "# chroot() is not available\n";
- for (60..61) { print "ok $_\n" }
+ for (62..63) { print "ok $_\n" }
}
}
# Some operations using files can't use tainted data.
{
my $foo = "imaginary library" . $TAINT;
- test 62, eval { require $foo } eq '', 'require';
- test 63, $@ =~ /^Insecure dependency/, $@;
+ test 64, eval { require $foo } eq '', 'require';
+ test 65, $@ =~ /^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 64, eval { open FOO, $foo } eq '', 'open for read';
- test 65, $@ eq '', $@; # NB: This should be allowed
- test 66, $! == 2; # File not found
+ test 66, eval { open FOO, $foo } eq '', 'open for read';
+ test 67, $@ eq '', $@; # NB: This should be allowed
+ test 68, $! == 2; # File not found
- test 67, eval { open FOO, "> $foo" } eq '', 'open for write';
- test 68, $@ =~ /^Insecure dependency/, $@;
+ test 69, eval { open FOO, "> $foo" } eq '', 'open for write';
+ test 70, $@ =~ /^Insecure dependency/, $@;
}
# Commands to the system can't use tainted data
if ($^O eq 'amigaos') {
print "# open(\"|\") is not available\n";
- for (69..72) { print "ok $_\n" }
+ for (71..74) { print "ok $_\n" }
}
else {
- test 69, eval { open FOO, "| $foo" } eq '', 'popen to';
- test 70, $@ =~ /^Insecure dependency/, $@;
-
- test 71, eval { open FOO, "$foo |" } eq '', 'popen from';
+ test 71, eval { open FOO, "| $foo" } eq '', 'popen to';
test 72, $@ =~ /^Insecure dependency/, $@;
- }
- test 73, eval { exec $TAINT } eq '', 'exec';
- test 74, $@ =~ /^Insecure dependency/, $@;
+ test 73, eval { open FOO, "$foo |" } eq '', 'popen from';
+ test 74, $@ =~ /^Insecure dependency/, $@;
+ }
- test 75, eval { system $TAINT } eq '', 'system';
+ test 75, eval { exec $TAINT } eq '', 'exec';
test 76, $@ =~ /^Insecure dependency/, $@;
+ test 77, eval { system $TAINT } eq '', 'system';
+ test 78, $@ =~ /^Insecure dependency/, $@;
+
$foo = "*";
taint_these $foo;
- test 77, eval { `$echo 1$foo` } eq '', 'backticks';
- test 78, $@ =~ /^Insecure dependency/, $@;
+ test 79, eval { `$echo 1$foo` } eq '', 'backticks';
+ test 80, $@ =~ /^Insecure dependency/, $@;
if ($Is_VMS) { # wildcard expansion doesn't invoke shell, so is safe
- test 79, join('', eval { glob $foo } ) ne '', 'globbing';
- test 80, $@ eq '', $@;
+ test 81, join('', eval { glob $foo } ) ne '', 'globbing';
+ test 82, $@ eq '', $@;
}
else {
- test 79, join('', eval { glob $foo } ) eq '', 'globbing';
- test 80, $@ =~ /^Insecure dependency/, $@;
+ test 81, join('', eval { glob $foo } ) eq '', 'globbing';
+ test 82, $@ =~ /^Insecure dependency/, $@;
}
}
# Operations which affect processes can't use tainted data.
{
- test 81, eval { kill 0, $TAINT } eq '', 'kill';
- test 82, $@ =~ /^Insecure dependency/, $@;
+ test 83, eval { kill 0, $TAINT } eq '', 'kill';
+ test 84, $@ =~ /^Insecure dependency/, $@;
if ($Config{d_setpgrp}) {
- test 83, eval { setpgrp 0, $TAINT } eq '', 'setpgrp';
- test 84, $@ =~ /^Insecure dependency/, $@;
+ test 85, eval { setpgrp 0, $TAINT } eq '', 'setpgrp';
+ test 86, $@ =~ /^Insecure dependency/, $@;
}
else {
print "# setpgrp() is not available\n";
- for (83..84) { print "ok $_\n" }
+ for (85..86) { print "ok $_\n" }
}
if ($Config{d_setprior}) {
- test 85, eval { setpriority 0, $TAINT, $TAINT } eq '', 'setpriority';
- test 86, $@ =~ /^Insecure dependency/, $@;
+ test 87, eval { setpriority 0, $TAINT, $TAINT } eq '', 'setpriority';
+ test 88, $@ =~ /^Insecure dependency/, $@;
}
else {
print "# setpriority() is not available\n";
- for (85..86) { print "ok $_\n" }
+ for (87..88) { print "ok $_\n" }
}
}
# Some miscellaneous operations can't use tainted data.
{
if ($Config{d_syscall}) {
- test 87, eval { syscall $TAINT } eq '', 'syscall';
- test 88, $@ =~ /^Insecure dependency/, $@;
+ test 89, eval { syscall $TAINT } eq '', 'syscall';
+ test 90, $@ =~ /^Insecure dependency/, $@;
}
else {
print "# syscall() is not available\n";
- for (87..88) { print "ok $_\n" }
+ for (89..90) { print "ok $_\n" }
}
{
local *FOO;
my $temp = "./taintC$$";
END { unlink $temp }
- test 89, open(FOO, "> $temp"), "Couldn't open $temp for write: $!";
+ test 91, open(FOO, "> $temp"), "Couldn't open $temp for write: $!";
- test 90, eval { ioctl FOO, $TAINT, $foo } eq '', 'ioctl';
- test 91, $@ =~ /^Insecure dependency/, $@;
+ test 92, eval { ioctl FOO, $TAINT, $foo } eq '', 'ioctl';
+ test 93, $@ =~ /^Insecure dependency/, $@;
if ($Config{d_fcntl}) {
- test 92, eval { fcntl FOO, $TAINT, $foo } eq '', 'fcntl';
- test 93, $@ =~ /^Insecure dependency/, $@;
+ test 94, eval { fcntl FOO, $TAINT, $foo } eq '', 'fcntl';
+ test 95, $@ =~ /^Insecure dependency/, $@;
}
else {
print "# fcntl() is not available\n";
- for (92..93) { print "ok $_\n" }
+ for (94..95) { print "ok $_\n" }
}
close FOO;
}
}
-# Some tests involving references
+# Some tests involving references
{
my $foo = 'abc' . $TAINT;
my $fooref = \$foo;
- test 94, not tainted $fooref;
- test 95, tainted $$fooref;
- test 96, tainted $foo;
+ test 96, not tainted $fooref;
+ test 97, tainted $$fooref;
+ test 98, tainted $foo;
+}
+
+# Some tests involving assignment
+{
+ my $foo = $TAINT0;
+ my $bar = $foo;
+ test 99, all_tainted $foo, $bar;
+ test 100, tainted($foo = $bar);
+ test 101, tainted($bar = $bar);
+ test 102, tainted($bar += $bar);
+ test 103, tainted($bar -= $bar);
+ test 104, tainted($bar *= $bar);
+ test 105, tainted($bar++);
+ test 106, tainted($bar /= $bar);
+ test 107, tainted($bar += 0);
+ test 108, tainted($bar -= 2);
+ test 109, tainted($bar *= -1);
+ test 110, tainted($bar /= 1);
+ test 111, tainted($bar--);
+ test 112, $bar == 0;
}
projects / p5sagit/p5-mst-13.2.git / blobdiff