3 # Taint tests by Tom Phoenix <rootbeer@teleport.com>.
5 # I don't claim to know all about tainting. If anyone sees
6 # tests that I've missed here, please add them. But this is
7 # better than having no tests at all, right?
17 use File::Spec::Functions;
19 my $total_tests = 236;
24 # You have to do it this way or VMS will get confused.
25 print $ok ? "ok $test - $name\n" : "not ok $test - $name\n";
27 printf "# Failed test at line %d\n", (caller)[2] unless $ok;
36 use vars qw($ipcsysv); # did we manage to load IPC::SysV?
39 if ($^O eq 'VMS' && !defined($Config{d_setenv})) {
40 $ENV{PATH} = $ENV{PATH};
41 $ENV{TERM} = $ENV{TERM} ne ''? $ENV{TERM} : 'dummy';
43 if ($Config{'extensions'} =~ /\bIPC\/SysV\b/
44 && ($Config{d_shm} || $Config{d_msg})) {
45 eval { require IPC::SysV };
48 IPC::SysV->import(qw(IPC_PRIVATE IPC_RMID IPC_CREAT S_IRWXU IPC_NOWAIT));
53 my $Is_MacOS = $^O eq 'MacOS';
54 my $Is_VMS = $^O eq 'VMS';
55 my $Is_MSWin32 = $^O eq 'MSWin32';
56 my $Is_NetWare = $^O eq 'NetWare';
57 my $Is_Dos = $^O eq 'dos';
58 my $Is_Cygwin = $^O eq 'cygwin';
59 my $Invoke_Perl = $Is_VMS ? 'MCR Sys$Disk:[]Perl.' :
60 ($Is_MSWin32 ? '.\perl' :
62 ($Is_NetWare ? 'perl' : './perl'));
63 my @MoreEnv = qw/IFS CDPATH ENV BASH_ENV/;
67 for $x ('DCL$PATH', @MoreEnv) {
68 ($old{$x}) = $ENV{$x} =~ /^(.*)$/ if exists $ENV{$x};
72 \$ENV{PATH} = '' if $Config{d_setenv};
73 warn "# Note: logical name 'PATH' may have been deleted\n";
74 \@ENV{keys %old} = values %old;
80 # The empty tainted value, for tainting strings
81 my $TAINT = substr($^X, 0, 0);
82 # A tainted zero, useful for tainting numbers
83 my $TAINT0 = 0 + $TAINT;
85 # This taints each argument passed. All must be lvalues.
86 # Side effect: It also stringifies them. :-(
88 for (@_) { $_ .= $TAINT }
91 # How to identify taint when you see it
93 not eval { join("",@_), kill 0; 1 };
99 for (@_) { return 0 unless tainted $_ }
104 my($serial, $boolean, $diag) = @_;
106 print "ok $serial\n";
108 print "not ok $serial\n";
109 for (split m/^/m, $diag) {
114 or substr($diag, -1) eq "\n";
118 # We need an external program to call.
119 my $ECHO = ($Is_MSWin32 ? ".\\echo$$" : $Is_MacOS ? ":echo$$" : ($Is_NetWare ? "echo$$" : "./echo$$"));
121 open PROG, "> $ECHO" or die "Can't create $ECHO: $!";
122 print PROG 'print "@ARGV\n"', "\n";
124 my $echo = "$Invoke_Perl $ECHO";
126 my $TEST = catfile(curdir(), 'TEST');
128 print "1..$total_tests\n";
130 # First, let's make sure that Perl is checking the dangerous
131 # environment variables. Maybe they aren't set yet, so we'll
132 # taint them ourselves.
134 $ENV{'DCL$PATH'} = '' if $Is_VMS;
137 delete @ENV{@MoreEnv};
140 if ($Is_Cygwin && ! -f 'cygwin1.dll') {
141 system("/usr/bin/cp /usr/bin/cygwin1.dll .") &&
142 die "$0: failed to cp cygwin1.dll: $!\n";
144 END { unlink "cygwin1.dll" }
148 if ($Is_Cygwin && ! -f 'cygcrypt-0.dll' && -f '/usr/bin/cygcrypt-0.dll') {
149 system("/usr/bin/cp /usr/bin/cygcrypt-0.dll .") &&
150 die "$0: failed to cp cygcrypt-0.dll: $!\n";
152 END { unlink "cygcrypt-0.dll" }
156 test 1, eval { `$echo 1` } eq "1\n";
158 if ($Is_MSWin32 || $Is_NetWare || $Is_VMS || $Is_Dos || $Is_MacOS) {
159 print "# Environment tainting tests skipped\n";
160 for (2..5) { print "ok $_\n" }
163 my @vars = ('PATH', @MoreEnv);
164 while (my $v = $vars[0]) {
165 local $ENV{$v} = $TAINT;
166 last if eval { `$echo 1` };
167 last unless $@ =~ /^Insecure \$ENV{$v}/;
170 test 2, !@vars, "\$$vars[0]";
172 # tainted $TERM is unsafe only if it contains metachars
174 $ENV{TERM} = 'e=mc2';
175 test 3, eval { `$echo 1` } eq "1\n";
176 $ENV{TERM} = 'e=mc2' . $TAINT;
177 test 4, eval { `$echo 1` } eq '';
178 test 5, $@ =~ /^Insecure \$ENV{TERM}/, $@;
182 if ($^O eq 'os2' || $^O eq 'amigaos' || $Is_MSWin32 || $Is_NetWare || $Is_Dos) {
183 print "# all directories are writeable\n";
186 $tmp = (grep { defined and -d and (stat _)[2] & 2 }
187 qw(sys$scratch /tmp /var/tmp /usr/tmp),
188 @ENV{qw(TMP TEMP)})[0]
189 or print "# can't find world-writeable directory to test PATH\n";
193 local $ENV{PATH} = $tmp;
194 test 6, eval { `$echo 1` } eq '';
195 test 7, $@ =~ /^Insecure directory in \$ENV{PATH}/, $@;
198 for (6..7) { print "ok $_ # Skipped: all directories are writeable\n" }
202 $ENV{'DCL$PATH'} = $TAINT;
203 test 8, eval { `$echo 1` } eq '';
204 test 9, $@ =~ /^Insecure \$ENV{DCL\$PATH}/, $@;
206 $ENV{'DCL$PATH'} = $tmp;
207 test 10, eval { `$echo 1` } eq '';
208 test 11, $@ =~ /^Insecure directory in \$ENV{DCL\$PATH}/, $@;
211 for (10..11) { print "ok $_ # Skipped: can't find world-writeable directory to test DCL\$PATH\n" }
213 $ENV{'DCL$PATH'} = '';
216 for (8..11) { print "ok $_ # Skipped: This is not VMS\n"; }
220 # Let's see that we can taint and untaint as needed.
223 test 12, tainted $foo;
225 # That was a sanity check. If it failed, stop the insanity!
226 die "Taint checks don't seem to be enabled" unless tainted $foo;
229 test 13, not tainted $foo;
232 test 14, tainted $foo;
235 test 15, not any_tainted @list;
236 taint_these @list[1,3,5,7,9];
237 test 16, any_tainted @list;
238 test 17, all_tainted @list[1,3,5,7,9];
239 test 18, not any_tainted @list[0,2,4,6,8];
241 ($foo) = $foo =~ /(.+)/;
242 test 19, not tainted $foo;
244 $foo = $1 if ('bar' . $TAINT) =~ /(.+)/;
245 test 20, not tainted $foo;
246 test 21, $foo eq 'bar';
251 ($foo) = ('bar' . $TAINT) =~ /(.+)/;
252 test 22, tainted $foo;
253 test 23, $foo eq 'bar';
255 $foo = $1 if ('bar' . $TAINT) =~ /(.+)/;
256 test 24, tainted $foo;
257 test 25, $foo eq 'bar';
260 $foo = $1 if 'bar' =~ /(.+)$TAINT/;
261 test 26, tainted $foo;
262 test 27, $foo eq 'bar';
264 my $pi = 4 * atan2(1,1) + $TAINT0;
265 test 28, tainted $pi;
267 ($pi) = $pi =~ /(\d+\.\d+)/;
268 test 29, not tainted $pi;
269 test 30, sprintf("%.5f", $pi) eq '3.14159';
272 # How about command-line arguments? The problem is that we don't
273 # always get some, so we'll run another process with some.
275 my $arg = catfile(curdir(), "arg$$");
276 open PROG, "> $arg" or die "Can't create $arg: $!";
278 eval { join('', @ARGV), kill 0 };
279 exit 0 if $@ =~ /^Insecure dependency/;
280 print "# Oops: \$@ was [$@]\n";
284 print `$Invoke_Perl "-T" $arg and some suspect arguments`;
285 test 31, !$?, "Exited with status $?";
289 # Reading from a file should be tainted
291 test 32, open(FILE, $TEST), "Couldn't open '$TEST': $!";
294 sysread(FILE, $block, 100);
297 test 33, tainted $block;
298 test 34, tainted $line;
301 # Globs should be forbidden, except under VMS,
302 # which doesn't spawn an external program.
303 if (1 # built-in glob
305 for (35..36) { print "ok $_\n"; }
308 my @globs = eval { <*> };
309 test 35, @globs == 0 && $@ =~ /^Insecure dependency/;
311 @globs = eval { glob '*' };
312 test 36, @globs == 0 && $@ =~ /^Insecure dependency/;
315 # Output of commands should be tainted
317 my $foo = `$echo abc`;
318 test 37, tainted $foo;
321 # Certain system variables should be tainted
323 test 38, all_tainted $^X, $0;
326 # Results of matching should all be untainted
328 my $foo = "abcdefghi" . $TAINT;
329 test 39, tainted $foo;
332 test 40, not any_tainted $`, $&, $';
334 $foo =~ /(...)(...)(...)/;
335 test 41, not any_tainted $1, $2, $3, $+;
337 my @bar = $foo =~ /(...)(...)(...)/;
338 test 42, not any_tainted @bar;
340 test 43, tainted $foo; # $foo should still be tainted!
341 test 44, $foo eq "abcdefghi";
344 # Operations which affect files can't use tainted data.
346 test 45, eval { chmod 0, $TAINT } eq '', 'chmod';
347 test 46, $@ =~ /^Insecure dependency/, $@;
349 # There is no feature test in $Config{} for truncate,
350 # so we allow for the possibility that it's missing.
351 test 47, eval { truncate 'NoSuChFiLe', $TAINT0 } eq '', 'truncate';
352 test 48, $@ =~ /^(?:Insecure dependency|truncate not implemented)/, $@;
354 test 49, eval { rename '', $TAINT } eq '', 'rename';
355 test 50, $@ =~ /^Insecure dependency/, $@;
357 test 51, eval { unlink $TAINT } eq '', 'unlink';
358 test 52, $@ =~ /^Insecure dependency/, $@;
360 test 53, eval { utime $TAINT } eq '', 'utime';
361 test 54, $@ =~ /^Insecure dependency/, $@;
363 if ($Config{d_chown}) {
364 test 55, eval { chown -1, -1, $TAINT } eq '', 'chown';
365 test 56, $@ =~ /^Insecure dependency/, $@;
368 for (55..56) { print "ok $_ # Skipped: chown() is not available\n" }
371 if ($Config{d_link}) {
372 test 57, eval { link $TAINT, '' } eq '', 'link';
373 test 58, $@ =~ /^Insecure dependency/, $@;
376 for (57..58) { print "ok $_ # Skipped: link() is not available\n" }
379 if ($Config{d_symlink}) {
380 test 59, eval { symlink $TAINT, '' } eq '', 'symlink';
381 test 60, $@ =~ /^Insecure dependency/, $@;
384 for (59..60) { print "ok $_ # Skipped: symlink() is not available\n" }
388 # Operations which affect directories can't use tainted data.
390 test 61, eval { mkdir $TAINT0, $TAINT } eq '', 'mkdir';
391 test 62, $@ =~ /^Insecure dependency/, $@;
393 test 63, eval { rmdir $TAINT } eq '', 'rmdir';
394 test 64, $@ =~ /^Insecure dependency/, $@;
396 test 65, eval { chdir $TAINT } eq '', 'chdir';
397 test 66, $@ =~ /^Insecure dependency/, $@;
399 if ($Config{d_chroot}) {
400 test 67, eval { chroot $TAINT } eq '', 'chroot';
401 test 68, $@ =~ /^Insecure dependency/, $@;
404 for (67..68) { print "ok $_ # Skipped: chroot() is not available\n" }
408 # Some operations using files can't use tainted data.
410 my $foo = "imaginary library" . $TAINT;
411 test 69, eval { require $foo } eq '', 'require';
412 test 70, $@ =~ /^Insecure dependency/, $@;
414 my $filename = "./taintB$$"; # NB: $filename isn't tainted!
415 END { unlink $filename if defined $filename }
416 $foo = $filename . $TAINT;
417 unlink $filename; # in any case
419 test 71, eval { open FOO, $foo } eq '', 'open for read';
420 test 72, $@ eq '', $@; # NB: This should be allowed
422 # Try first new style but allow also old style.
423 # We do not want the whole taint.t to fail
424 # just because Errno possibly failing.
425 test 73, eval('$!{ENOENT}') ||
426 $! == 2 || # File not found
427 ($Is_Dos && $! == 22) ||
428 ($^O eq 'mint' && $! == 33);
430 test 74, eval { open FOO, "> $foo" } eq '', 'open for write';
431 test 75, $@ =~ /^Insecure dependency/, $@;
434 # Commands to the system can't use tainted data
438 if ($^O eq 'amigaos') {
439 for (76..79) { print "ok $_ # Skipped: open('|') is not available\n" }
442 test 76, eval { open FOO, "| x$foo" } eq '', 'popen to';
443 test 77, $@ =~ /^Insecure dependency/, $@;
445 test 78, eval { open FOO, "x$foo |" } eq '', 'popen from';
446 test 79, $@ =~ /^Insecure dependency/, $@;
449 test 80, eval { exec $TAINT } eq '', 'exec';
450 test 81, $@ =~ /^Insecure dependency/, $@;
452 test 82, eval { system $TAINT } eq '', 'system';
453 test 83, $@ =~ /^Insecure dependency/, $@;
458 test 84, eval { `$echo 1$foo` } eq '', 'backticks';
459 test 85, $@ =~ /^Insecure dependency/, $@;
461 if ($Is_VMS) { # wildcard expansion doesn't invoke shell, so is safe
462 test 86, join('', eval { glob $foo } ) ne '', 'globbing';
463 test 87, $@ eq '', $@;
466 for (86..87) { print "ok $_ # Skipped: This is not VMS\n"; }
470 # Operations which affect processes can't use tainted data.
472 test 88, eval { kill 0, $TAINT } eq '', 'kill';
473 test 89, $@ =~ /^Insecure dependency/, $@;
475 if ($Config{d_setpgrp}) {
476 test 90, eval { setpgrp 0, $TAINT } eq '', 'setpgrp';
477 test 91, $@ =~ /^Insecure dependency/, $@;
480 for (90..91) { print "ok $_ # Skipped: setpgrp() is not available\n" }
483 if ($Config{d_setprior}) {
484 test 92, eval { setpriority 0, $TAINT, $TAINT } eq '', 'setpriority';
485 test 93, $@ =~ /^Insecure dependency/, $@;
488 for (92..93) { print "ok $_ # Skipped: setpriority() is not available\n" }
492 # Some miscellaneous operations can't use tainted data.
494 if ($Config{d_syscall}) {
495 test 94, eval { syscall $TAINT } eq '', 'syscall';
496 test 95, $@ =~ /^Insecure dependency/, $@;
499 for (94..95) { print "ok $_ # Skipped: syscall() is not available\n" }
506 my $temp = "./taintC$$";
508 test 96, open(FOO, "> $temp"), "Couldn't open $temp for write: $!";
510 test 97, eval { ioctl FOO, $TAINT, $foo } eq '', 'ioctl';
511 test 98, $@ =~ /^Insecure dependency/, $@;
513 if ($Config{d_fcntl}) {
514 test 99, eval { fcntl FOO, $TAINT, $foo } eq '', 'fcntl';
515 test 100, $@ =~ /^Insecure dependency/, $@;
518 for (99..100) { print "ok $_ # Skipped: fcntl() is not available\n" }
525 # Some tests involving references
527 my $foo = 'abc' . $TAINT;
529 test 101, not tainted $fooref;
530 test 102, tainted $$fooref;
531 test 103, tainted $foo;
534 # Some tests involving assignment
538 test 104, all_tainted $foo, $bar;
539 test 105, tainted($foo = $bar);
540 test 106, tainted($bar = $bar);
541 test 107, tainted($bar += $bar);
542 test 108, tainted($bar -= $bar);
543 test 109, tainted($bar *= $bar);
544 test 110, tainted($bar++);
545 test 111, tainted($bar /= $bar);
546 test 112, tainted($bar += 0);
547 test 113, tainted($bar -= 2);
548 test 114, tainted($bar *= -1);
549 test 115, tainted($bar /= 1);
550 test 116, tainted($bar--);
554 # Test assignment and return of lists
556 my @foo = ("A", "tainted" . $TAINT, "B");
557 test 118, not tainted $foo[0];
558 test 119, tainted $foo[1];
559 test 120, not tainted $foo[2];
561 test 121, not tainted $bar[0];
562 test 122, tainted $bar[1];
563 test 123, not tainted $bar[2];
564 my @baz = eval { "A", "tainted" . $TAINT, "B" };
565 test 124, not tainted $baz[0];
566 test 125, tainted $baz[1];
567 test 126, not tainted $baz[2];
568 my @plugh = eval q[ "A", "tainted" . $TAINT, "B" ];
569 test 127, not tainted $plugh[0];
570 test 128, tainted $plugh[1];
571 test 129, not tainted $plugh[2];
572 my $nautilus = sub { "A", "tainted" . $TAINT, "B" };
573 test 130, not tainted ((&$nautilus)[0]);
574 test 131, tainted ((&$nautilus)[1]);
575 test 132, not tainted ((&$nautilus)[2]);
576 my @xyzzy = &$nautilus;
577 test 133, not tainted $xyzzy[0];
578 test 134, tainted $xyzzy[1];
579 test 135, not tainted $xyzzy[2];
580 my $red_october = sub { return "A", "tainted" . $TAINT, "B" };
581 test 136, not tainted ((&$red_october)[0]);
582 test 137, tainted ((&$red_october)[1]);
583 test 138, not tainted ((&$red_october)[2]);
584 my @corge = &$red_october;
585 test 139, not tainted $corge[0];
586 test 140, tainted $corge[1];
587 test 141, not tainted $corge[2];
590 # Test for system/library calls returning string data of dubious origin.
592 # No reliable %Config check for getpw*
593 if (eval { setpwent(); getpwent() }) {
595 my @getpwent = getpwent();
596 die "getpwent: $!\n" unless (@getpwent);
597 test 142,( not tainted $getpwent[0]
598 and tainted $getpwent[1]
599 and not tainted $getpwent[2]
600 and not tainted $getpwent[3]
601 and not tainted $getpwent[4]
602 and not tainted $getpwent[5]
603 and tainted $getpwent[6] # ge?cos
604 and not tainted $getpwent[7]
605 and tainted $getpwent[8]); # shell
608 for (142) { print "ok $_ # Skipped: getpwent() is not available\n" }
611 if ($Config{d_readdir}) { # pretty hard to imagine not
613 opendir(D, "op") or die "opendir: $!\n";
614 my $readdir = readdir(D);
615 test 143, tainted $readdir;
618 for (143) { print "ok $_ # Skipped: readdir() is not available\n" }
621 if ($Config{d_readlink} && $Config{d_symlink}) {
622 my $symlink = "sl$$";
624 my $sl = "/something/naughty";
625 # it has to be a real path on Mac OS
626 $sl = MacPerl::MakePath((MacPerl::Volumes())[0]) if $Is_MacOS;
627 symlink($sl, $symlink) or die "symlink: $!\n";
628 my $readlink = readlink($symlink);
629 test 144, tainted $readlink;
632 for (144) { print "ok $_ # Skipped: readlink() or symlink() is not available\n"; }
636 # test bitwise ops (regression bug)
640 test 145, not tainted $j;
643 test 146, tainted $j;
646 # test target of substitution (regression bug)
648 my $why = $TAINT."y";
650 test 147, tainted $why;
654 test 148, tainted $why;
656 $why =~ s/e/'-'.$$/ge;
657 test 149, tainted $why;
663 print "ok 150 # skipped: no IPC::SysV\n";
666 if ($Config{'extensions'} =~ /\bIPC\/SysV\b/ && $Config{d_shm}) {
671 my $id = shmget(IPC_PRIVATE, $size, S_IRWXU);
674 if (shmwrite($id, $sent, 0, 60)) {
675 if (shmread($id, $rcvd, 0, 60)) {
676 substr($rcvd, index($rcvd, "\0")) = '';
678 warn "# shmread failed: $!\n";
681 warn "# shmwrite failed: $!\n";
683 shmctl($id, IPC_RMID, 0) or warn "# shmctl failed: $!\n";
685 warn "# shmget failed: $!\n";
688 if ($rcvd eq $sent) {
689 test 150, tainted $rcvd;
691 print "ok 150 # Skipped: SysV shared memory operation failed\n";
694 print "ok 150 # Skipped: SysV shared memory is not available\n";
701 print "ok 151 # skipped: no IPC::SysV\n";
704 if ($Config{'extensions'} =~ /\bIPC\/SysV\b/ && $Config{d_msg}) {
706 my $id = msgget(IPC_PRIVATE, IPC_CREAT | S_IRWXU);
708 my $sent = "message";
709 my $type_sent = 1234;
714 if (msgsnd($id, pack("l! a*", $type_sent, $sent), IPC_NOWAIT)) {
715 if (msgrcv($id, $rcvd, 60, 0, IPC_NOWAIT)) {
716 ($type_rcvd, $rcvd) = unpack("l! a*", $rcvd);
718 warn "# msgrcv failed: $!\n";
721 warn "# msgsnd failed: $!\n";
723 msgctl($id, IPC_RMID, 0) or warn "# msgctl failed: $!\n";
725 warn "# msgget failed\n";
728 if ($rcvd eq $sent && $type_sent == $type_rcvd) {
729 test 151, tainted $rcvd;
731 print "ok 151 # Skipped: SysV message queue operation failed\n";
734 print "ok 151 # Skipped: SysV message queues are not available\n";
739 # bug id 20001004.006
741 open IN, $TEST or warn "$0: cannot read $TEST: $!" ;
745 print "not " unless tainted($a) && tainted($b) && !defined($b);
751 # bug id 20001004.007
753 open IN, $TEST or warn "$0: cannot read $TEST: $!" ;
758 print "not " unless !tainted($c->{a}) && tainted($c->{b});
763 print "not " unless tainted($d->{a}) && !tainted($d->{b});
767 b => { c => $a, d => 42 } };
768 print "not " unless !tainted($e->{a}) &&
770 tainted($e->{b}->{c}) &&
771 !tainted($e->{b}->{d});
778 # bug id 20010519.003
781 use vars qw($has_fcntl);
782 eval { require Fcntl; import Fcntl; };
788 unless ($has_fcntl) {
790 print "ok $_ # Skip: no Fcntl (no dynaloading?)\n";
793 my $evil = "foo" . $TAINT;
795 eval { sysopen(my $ro, $evil, &O_RDONLY) };
796 test 156, $@ !~ /^Insecure dependency/, $@;
798 eval { sysopen(my $wo, $evil, &O_WRONLY) };
799 test 157, $@ =~ /^Insecure dependency/, $@;
801 eval { sysopen(my $rw, $evil, &O_RDWR) };
802 test 158, $@ =~ /^Insecure dependency/, $@;
804 eval { sysopen(my $ap, $evil, &O_APPEND) };
805 test 159, $@ =~ /^Insecure dependency/, $@;
807 eval { sysopen(my $cr, $evil, &O_CREAT) };
808 test 160, $@ =~ /^Insecure dependency/, $@;
810 eval { sysopen(my $tr, $evil, &O_TRUNC) };
811 test 161, $@ =~ /^Insecure dependency/, $@;
813 eval { sysopen(my $ro, "foo", &O_RDONLY | $evil) };
814 test 162, $@ !~ /^Insecure dependency/, $@;
816 eval { sysopen(my $wo, "foo", &O_WRONLY | $evil) };
817 test 163, $@ =~ /^Insecure dependency/, $@;
819 eval { sysopen(my $rw, "foo", &O_RDWR | $evil) };
820 test 164, $@ =~ /^Insecure dependency/, $@;
822 eval { sysopen(my $ap, "foo", &O_APPEND | $evil) };
823 test 165, $@ =~ /^Insecure dependency/, $@;
825 eval { sysopen(my $cr, "foo", &O_CREAT | $evil) };
826 test 166, $@ =~ /^Insecure dependency/, $@;
828 eval { sysopen(my $tr, "foo", &O_TRUNC | $evil) };
829 test 167, $@ =~ /^Insecure dependency/, $@;
831 eval { sysopen(my $ro, "foo", &O_RDONLY, $evil) };
832 test 168, $@ !~ /^Insecure dependency/, $@;
834 eval { sysopen(my $wo, "foo", &O_WRONLY, $evil) };
835 test 169, $@ =~ /^Insecure dependency/, $@;
837 eval { sysopen(my $rw, "foo", &O_RDWR, $evil) };
838 test 170, $@ =~ /^Insecure dependency/, $@;
840 eval { sysopen(my $ap, "foo", &O_APPEND, $evil) };
841 test 171, $@ =~ /^Insecure dependency/, $@;
843 eval { sysopen(my $cr, "foo", &O_CREAT, $evil) };
844 test 172, $@ =~ /^Insecure dependency/, $@;
846 eval { sysopen(my $tr, "foo", &O_TRUNC, $evil) };
847 test 173, $@ =~ /^Insecure dependency/, $@;
849 unlink("foo"); # not unlink($evil), because that would fail...
858 local $SIG{__WARN__} = sub { print "not " };
861 my $divnum = shift()/1;
862 sprintf("%1.1f\n", $divnum);
874 # Bug ID 20010730.010
882 bless \$arg => $class;
893 my $bar = "The Big Bright Green Pleasure Machine";
895 tie my ($foo), Tie => $bar;
899 print $i == 1 ? "ok 175\n" : "not ok 175\n"
904 # Check that all environment variables are tainted.
906 while (my ($k, $v) = each %ENV) {
908 # These we have explicitly untainted or set earlier.
909 $k !~ /^(BASH_ENV|CDPATH|ENV|IFS|PATH|PERL_CORE|TEMP|TERM|TMP)$/) {
910 push @untainted, "# '$k' = '$v'\n";
913 print @untainted == 0 ? "ok 176\n" : "not ok 176\n";
914 print "# untainted:\n", @untainted if @untainted;
918 ok( ${^TAINT} == 1, '$^TAINT is on' );
920 eval { ${^TAINT} = 0 };
921 ok( ${^TAINT}, '$^TAINT is not assignable' );
922 ok( $@ =~ /^Modification of a read-only value attempted/,
923 'Assigning to ${^TAINT} fails' );
928 my $re1 = qr/x$TAINT/;
929 test 180, tainted $re1;
931 my $re2 = qr/^$re1\z/;
932 test 181, tainted $re2;
935 test 182, tainted $re3;
939 print "ok 183 # Skipped: system {} has different semantics\n";
944 local $ENV{PATH} .= $TAINT;
945 eval { system { "echo" } "/arg0", "arg1" };
946 test 183, $@ =~ /^Insecure \$ENV/;
949 for (184..205) {print "not ok $_ # TODO tainted %ENV warning occludes tainted arguments warning\n";}
953 # bug 20020208.005 plus some extras
954 # single arg exec/system are tests 80-83
955 my $err = qr/^Insecure dependency/ ;
956 test 184, eval { exec $TAINT, $TAINT } eq '', 'exec';
957 test 185, $@ =~ $err, $@;
958 test 186, eval { exec $TAINT $TAINT } eq '', 'exec';
959 test 187, $@ =~ $err, $@;
960 test 188, eval { exec $TAINT $TAINT, $TAINT } eq '', 'exec';
961 test 189, $@ =~ $err, $@;
962 test 190, eval { exec $TAINT 'notaint' } eq '', 'exec';
963 test 191, $@ =~ $err, $@;
964 test 192, eval { exec {'notaint'} $TAINT } eq '', 'exec';
965 test 193, $@ =~ $err, $@;
967 test 194, eval { system $TAINT, $TAINT } eq '', 'system';
968 test 195, $@ =~ $err, $@;
969 test 196, eval { system $TAINT $TAINT } eq '', 'system';
970 test 197, $@ =~ $err, $@;
971 test 198, eval { system $TAINT $TAINT, $TAINT } eq '', 'system';
972 test 199, $@ =~ $err, $@;
973 test 200, eval { system $TAINT 'notaint' } eq '', 'system';
974 test 201, $@ =~ $err, $@;
975 test 202, eval { system {'notaint'} $TAINT } eq '', 'system';
976 test 203, $@ =~ $err, $@;
978 eval { system("lskdfj does not exist","with","args"); };
981 print "ok 205 # no exec()\n";
983 eval { exec("lskdfj does not exist","with","args"); };
987 # If you add tests here update also the above skip block for VMS.
991 # [ID 20020704.001] taint propagation failure
994 test 206, tainted(my $foo = $1);
998 # [perl #24291] this used to dump core
999 our %nonmagicalenv = ( PATH => "util" );
1000 local *ENV = \%nonmagicalenv;
1001 eval { system("lskdfj"); };
1002 test 207, $@ =~ /^%ENV is aliased to another variable while running with -T switch/;
1003 local *ENV = *nonmagicalenv;
1004 eval { system("lskdfj"); };
1005 test 208, $@ =~ /^%ENV is aliased to %nonmagicalenv while running with -T switch/;
1010 test 209, !tainted($1);
1012 test 210, !tainted($notaint);
1015 $notaint =~ /($notaint)/;
1017 test 211, !tainted($1);
1018 test 212, !tainted($l);
1019 $notaint =~ /($TAINT)/;
1021 test 213, tainted($1);
1022 test 214, tainted($l);
1024 $TAINT =~ /($notaint)/;
1026 test 215, !tainted($1);
1027 test 216, !tainted($l);
1028 $TAINT =~ /($TAINT)/;
1030 test 217, tainted($1);
1031 test 218, tainted($l);
1034 ($r = $TAINT) =~ /($notaint)/;
1035 test 219, !tainted($1);
1036 ($r = $TAINT) =~ /($TAINT)/;
1037 test 220, tainted($1);
1040 # accessing $^O shoudn't taint it as a side-effect;
1041 # assigning tainted data to it is now an error
1043 test 221, !tainted($^O);
1044 if (!$^X) { } elsif ($^O eq 'bar') { }
1045 test 222, !tainted($^O);
1047 test 223, $@ =~ /Insecure dependency in/;
1050 EFFECTIVELY_CONSTANTS: {
1051 my $tainted_number = 12 + $TAINT0;
1052 test 224, tainted( $tainted_number );
1054 # Even though it's always 0, it's still tainted
1055 my $tainted_product = $tainted_number * 0;
1056 test 225, tainted( $tainted_product );
1057 test 226, $tainted_product == 0;
1060 TERNARY_CONDITIONALS: {
1061 my $tainted_true = $TAINT . "blah blah blah";
1062 my $tainted_false = $TAINT0;
1063 test 227, tainted( $tainted_true );
1064 test 228, tainted( $tainted_false );
1066 my $result = $tainted_true ? "True" : "False";
1067 test 229, $result eq "True";
1068 test 230, !tainted( $result );
1070 $result = $tainted_false ? "True" : "False";
1071 test 231, $result eq "False";
1072 test 232, !tainted( $result );
1074 my $untainted_whatever = "The Fabulous Johnny Cash";
1075 my $tainted_whatever = "Soft Cell" . $TAINT;
1077 $result = $tainted_true ? $tainted_whatever : $untainted_whatever;
1078 test 233, $result eq "Soft Cell";
1079 test 234, tainted( $result );
1081 $result = $tainted_false ? $tainted_whatever : $untainted_whatever;
1082 test 235, $result eq "The Fabulous Johnny Cash";
1083 test 236, !tainted( $result );