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?
22 # You have to do it this way or VMS will get confused.
23 print $ok ? "ok $test - $name\n" : "not ok $test - $name\n";
25 printf "# Failed test at line %d\n", (caller)[2] unless $ok;
34 use vars qw($ipcsysv); # did we manage to load IPC::SysV?
37 if ($^O eq 'VMS' && !defined($Config{d_setenv})) {
38 $ENV{PATH} = $ENV{PATH};
39 $ENV{TERM} = $ENV{TERM} ne ''? $ENV{TERM} : 'dummy';
41 if ($Config{'extensions'} =~ /\bIPC\/SysV\b/
42 && ($Config{d_shm} || $Config{d_msg})) {
43 eval { require IPC::SysV };
46 IPC::SysV->import(qw(IPC_PRIVATE IPC_RMID IPC_CREAT S_IRWXU));
51 my $Is_VMS = $^O eq 'VMS';
52 my $Is_MSWin32 = $^O eq 'MSWin32';
53 my $Is_NetWare = $^O eq 'NetWare';
54 my $Is_Dos = $^O eq 'dos';
55 my $Is_Cygwin = $^O eq 'cygwin';
56 my $Invoke_Perl = $Is_VMS ? 'MCR Sys$Disk:[]Perl.' :
57 ($Is_MSWin32 ? '.\perl' :
58 ($Is_NetWare ? 'perl' : './perl'));
59 my @MoreEnv = qw/IFS CDPATH ENV BASH_ENV/;
63 for $x ('DCL$PATH', @MoreEnv) {
64 ($old{$x}) = $ENV{$x} =~ /^(.*)$/ if exists $ENV{$x};
68 \$ENV{PATH} = '' if $Config{d_setenv};
69 warn "# Note: logical name 'PATH' may have been deleted\n";
70 \@ENV{keys %old} = values %old;
76 # The empty tainted value, for tainting strings
77 my $TAINT = substr($^X, 0, 0);
78 # A tainted zero, useful for tainting numbers
79 my $TAINT0 = 0 + $TAINT;
81 # This taints each argument passed. All must be lvalues.
82 # Side effect: It also stringifies them. :-(
84 for (@_) { $_ .= $TAINT }
87 # How to identify taint when you see it
89 not eval { join("",@_), kill 0; 1 };
95 for (@_) { return 0 unless tainted $_ }
100 my($serial, $boolean, $diag) = @_;
102 print "ok $serial\n";
104 print "not ok $serial\n";
105 for (split m/^/m, $diag) {
110 or substr($diag, -1) eq "\n";
114 # We need an external program to call.
115 my $ECHO = ($Is_MSWin32 ? ".\\echo$$" : ($Is_NetWare ? "echo$$" : "./echo$$"));
117 open PROG, "> $ECHO" or die "Can't create $ECHO: $!";
118 print PROG 'print "@ARGV\n"', "\n";
120 my $echo = "$Invoke_Perl $ECHO";
124 # First, let's make sure that Perl is checking the dangerous
125 # environment variables. Maybe they aren't set yet, so we'll
126 # taint them ourselves.
128 $ENV{'DCL$PATH'} = '' if $Is_VMS;
131 delete @ENV{@MoreEnv};
134 if ($Is_Cygwin && ! -f 'cygwin1.dll') {
135 system("/usr/bin/cp /usr/bin/cygwin1.dll .") &&
136 die "$0: failed to cp cygwin1.dll: $!\n";
137 END { unlink "cygwin1.dll" } # yes, done for all platforms...
140 test 1, eval { `$echo 1` } eq "1\n";
142 if ($Is_MSWin32 || $Is_NetWare || $Is_VMS || $Is_Dos) {
143 print "# Environment tainting tests skipped\n";
144 for (2..5) { print "ok $_\n" }
147 my @vars = ('PATH', @MoreEnv);
148 while (my $v = $vars[0]) {
149 local $ENV{$v} = $TAINT;
150 last if eval { `$echo 1` };
151 last unless $@ =~ /^Insecure \$ENV{$v}/;
154 test 2, !@vars, "\$$vars[0]";
156 # tainted $TERM is unsafe only if it contains metachars
158 $ENV{TERM} = 'e=mc2';
159 test 3, eval { `$echo 1` } eq "1\n";
160 $ENV{TERM} = 'e=mc2' . $TAINT;
161 test 4, eval { `$echo 1` } eq '';
162 test 5, $@ =~ /^Insecure \$ENV{TERM}/, $@;
166 if ($^O eq 'os2' || $^O eq 'amigaos' || $Is_MSWin32 || $Is_NetWare || $Is_Dos) {
167 print "# all directories are writeable\n";
170 $tmp = (grep { defined and -d and (stat _)[2] & 2 }
171 qw(sys$scratch /tmp /var/tmp /usr/tmp),
172 @ENV{qw(TMP TEMP)})[0]
173 or print "# can't find world-writeable directory to test PATH\n";
177 local $ENV{PATH} = $tmp;
178 test 6, eval { `$echo 1` } eq '';
179 test 7, $@ =~ /^Insecure directory in \$ENV{PATH}/, $@;
182 for (6..7) { print "ok $_ # Skipped: all directories are writeable\n" }
186 $ENV{'DCL$PATH'} = $TAINT;
187 test 8, eval { `$echo 1` } eq '';
188 test 9, $@ =~ /^Insecure \$ENV{DCL\$PATH}/, $@;
190 $ENV{'DCL$PATH'} = $tmp;
191 test 10, eval { `$echo 1` } eq '';
192 test 11, $@ =~ /^Insecure directory in \$ENV{DCL\$PATH}/, $@;
195 for (10..11) { print "ok $_ # Skipped: can't find world-writeable directory to test DCL\$PATH\n" }
197 $ENV{'DCL$PATH'} = '';
200 for (8..11) { print "ok $_ # Skipped: This is not VMS\n"; }
204 # Let's see that we can taint and untaint as needed.
207 test 12, tainted $foo;
209 # That was a sanity check. If it failed, stop the insanity!
210 die "Taint checks don't seem to be enabled" unless tainted $foo;
213 test 13, not tainted $foo;
216 test 14, tainted $foo;
219 test 15, not any_tainted @list;
220 taint_these @list[1,3,5,7,9];
221 test 16, any_tainted @list;
222 test 17, all_tainted @list[1,3,5,7,9];
223 test 18, not any_tainted @list[0,2,4,6,8];
225 ($foo) = $foo =~ /(.+)/;
226 test 19, not tainted $foo;
228 $foo = $1 if ('bar' . $TAINT) =~ /(.+)/;
229 test 20, not tainted $foo;
230 test 21, $foo eq 'bar';
235 ($foo) = ('bar' . $TAINT) =~ /(.+)/;
236 test 22, tainted $foo;
237 test 23, $foo eq 'bar';
239 $foo = $1 if ('bar' . $TAINT) =~ /(.+)/;
240 test 24, tainted $foo;
241 test 25, $foo eq 'bar';
244 $foo = $1 if 'bar' =~ /(.+)$TAINT/;
245 test 26, tainted $foo;
246 test 27, $foo eq 'bar';
248 my $pi = 4 * atan2(1,1) + $TAINT0;
249 test 28, tainted $pi;
251 ($pi) = $pi =~ /(\d+\.\d+)/;
252 test 29, not tainted $pi;
253 test 30, sprintf("%.5f", $pi) eq '3.14159';
256 # How about command-line arguments? The problem is that we don't
257 # always get some, so we'll run another process with some.
260 open PROG, "> $arg" or die "Can't create $arg: $!";
262 eval { join('', @ARGV), kill 0 };
263 exit 0 if $@ =~ /^Insecure dependency/;
264 print "# Oops: \$@ was [$@]\n";
268 print `$Invoke_Perl "-T" $arg and some suspect arguments`;
269 test 31, !$?, "Exited with status $?";
273 # Reading from a file should be tainted
276 test 32, open(FILE, $file), "Couldn't open '$file': $!";
279 sysread(FILE, $block, 100);
282 test 33, tainted $block;
283 test 34, tainted $line;
286 # Globs should be forbidden, except under VMS,
287 # which doesn't spawn an external program.
288 if (1 # built-in glob
290 for (35..36) { print "ok $_\n"; }
293 my @globs = eval { <*> };
294 test 35, @globs == 0 && $@ =~ /^Insecure dependency/;
296 @globs = eval { glob '*' };
297 test 36, @globs == 0 && $@ =~ /^Insecure dependency/;
300 # Output of commands should be tainted
302 my $foo = `$echo abc`;
303 test 37, tainted $foo;
306 # Certain system variables should be tainted
308 test 38, all_tainted $^X, $0;
311 # Results of matching should all be untainted
313 my $foo = "abcdefghi" . $TAINT;
314 test 39, tainted $foo;
317 test 40, not any_tainted $`, $&, $';
319 $foo =~ /(...)(...)(...)/;
320 test 41, not any_tainted $1, $2, $3, $+;
322 my @bar = $foo =~ /(...)(...)(...)/;
323 test 42, not any_tainted @bar;
325 test 43, tainted $foo; # $foo should still be tainted!
326 test 44, $foo eq "abcdefghi";
329 # Operations which affect files can't use tainted data.
331 test 45, eval { chmod 0, $TAINT } eq '', 'chmod';
332 test 46, $@ =~ /^Insecure dependency/, $@;
334 # There is no feature test in $Config{} for truncate,
335 # so we allow for the possibility that it's missing.
336 test 47, eval { truncate 'NoSuChFiLe', $TAINT0 } eq '', 'truncate';
337 test 48, $@ =~ /^(?:Insecure dependency|truncate not implemented)/, $@;
339 test 49, eval { rename '', $TAINT } eq '', 'rename';
340 test 50, $@ =~ /^Insecure dependency/, $@;
342 test 51, eval { unlink $TAINT } eq '', 'unlink';
343 test 52, $@ =~ /^Insecure dependency/, $@;
345 test 53, eval { utime $TAINT } eq '', 'utime';
346 test 54, $@ =~ /^Insecure dependency/, $@;
348 if ($Config{d_chown}) {
349 test 55, eval { chown -1, -1, $TAINT } eq '', 'chown';
350 test 56, $@ =~ /^Insecure dependency/, $@;
353 for (55..56) { print "ok $_ # Skipped: chown() is not available\n" }
356 if ($Config{d_link}) {
357 test 57, eval { link $TAINT, '' } eq '', 'link';
358 test 58, $@ =~ /^Insecure dependency/, $@;
361 for (57..58) { print "ok $_ # Skipped: link() is not available\n" }
364 if ($Config{d_symlink}) {
365 test 59, eval { symlink $TAINT, '' } eq '', 'symlink';
366 test 60, $@ =~ /^Insecure dependency/, $@;
369 for (59..60) { print "ok $_ # Skipped: symlink() is not available\n" }
373 # Operations which affect directories can't use tainted data.
375 test 61, eval { mkdir $TAINT0, $TAINT } eq '', 'mkdir';
376 test 62, $@ =~ /^Insecure dependency/, $@;
378 test 63, eval { rmdir $TAINT } eq '', 'rmdir';
379 test 64, $@ =~ /^Insecure dependency/, $@;
381 test 65, eval { chdir $TAINT } eq '', 'chdir';
382 test 66, $@ =~ /^Insecure dependency/, $@;
384 if ($Config{d_chroot}) {
385 test 67, eval { chroot $TAINT } eq '', 'chroot';
386 test 68, $@ =~ /^Insecure dependency/, $@;
389 for (67..68) { print "ok $_ # Skipped: chroot() is not available\n" }
393 # Some operations using files can't use tainted data.
395 my $foo = "imaginary library" . $TAINT;
396 test 69, eval { require $foo } eq '', 'require';
397 test 70, $@ =~ /^Insecure dependency/, $@;
399 my $filename = "./taintB$$"; # NB: $filename isn't tainted!
400 END { unlink $filename if defined $filename }
401 $foo = $filename . $TAINT;
402 unlink $filename; # in any case
404 test 71, eval { open FOO, $foo } eq '', 'open for read';
405 test 72, $@ eq '', $@; # NB: This should be allowed
407 # Try first new style but allow also old style.
408 # We do not want the whole taint.t to fail
409 # just because Errno possibly failing.
410 test 73, eval('$!{ENOENT}') ||
411 $! == 2 || # File not found
412 ($Is_Dos && $! == 22) ||
413 ($^O eq 'mint' && $! == 33);
415 test 74, eval { open FOO, "> $foo" } eq '', 'open for write';
416 test 75, $@ =~ /^Insecure dependency/, $@;
419 # Commands to the system can't use tainted data
423 if ($^O eq 'amigaos') {
424 for (76..79) { print "ok $_ # Skipped: open('|') is not available\n" }
427 test 76, eval { open FOO, "| x$foo" } eq '', 'popen to';
428 test 77, $@ =~ /^Insecure dependency/, $@;
430 test 78, eval { open FOO, "x$foo |" } eq '', 'popen from';
431 test 79, $@ =~ /^Insecure dependency/, $@;
434 test 80, eval { exec $TAINT } eq '', 'exec';
435 test 81, $@ =~ /^Insecure dependency/, $@;
437 test 82, eval { system $TAINT } eq '', 'system';
438 test 83, $@ =~ /^Insecure dependency/, $@;
443 test 84, eval { `$echo 1$foo` } eq '', 'backticks';
444 test 85, $@ =~ /^Insecure dependency/, $@;
446 if ($Is_VMS) { # wildcard expansion doesn't invoke shell, so is safe
447 test 86, join('', eval { glob $foo } ) ne '', 'globbing';
448 test 87, $@ eq '', $@;
451 for (86..87) { print "ok $_ # Skipped: this is not VMS\n"; }
455 # Operations which affect processes can't use tainted data.
457 test 88, eval { kill 0, $TAINT } eq '', 'kill';
458 test 89, $@ =~ /^Insecure dependency/, $@;
460 if ($Config{d_setpgrp}) {
461 test 90, eval { setpgrp 0, $TAINT } eq '', 'setpgrp';
462 test 91, $@ =~ /^Insecure dependency/, $@;
465 for (90..91) { print "ok $_ # Skipped: setpgrp() is not available\n" }
468 if ($Config{d_setprior}) {
469 test 92, eval { setpriority 0, $TAINT, $TAINT } eq '', 'setpriority';
470 test 93, $@ =~ /^Insecure dependency/, $@;
473 for (92..93) { print "ok $_ # Skipped: setpriority() is not available\n" }
477 # Some miscellaneous operations can't use tainted data.
479 if ($Config{d_syscall}) {
480 test 94, eval { syscall $TAINT } eq '', 'syscall';
481 test 95, $@ =~ /^Insecure dependency/, $@;
484 for (94..95) { print "ok $_ # Skipped: syscall() is not available\n" }
491 my $temp = "./taintC$$";
493 test 96, open(FOO, "> $temp"), "Couldn't open $temp for write: $!";
495 test 97, eval { ioctl FOO, $TAINT, $foo } eq '', 'ioctl';
496 test 98, $@ =~ /^Insecure dependency/, $@;
498 if ($Config{d_fcntl}) {
499 test 99, eval { fcntl FOO, $TAINT, $foo } eq '', 'fcntl';
500 test 100, $@ =~ /^Insecure dependency/, $@;
503 for (99..100) { print "ok $_ # Skipped: fcntl() is not available\n" }
510 # Some tests involving references
512 my $foo = 'abc' . $TAINT;
514 test 101, not tainted $fooref;
515 test 102, tainted $$fooref;
516 test 103, tainted $foo;
519 # Some tests involving assignment
523 test 104, all_tainted $foo, $bar;
524 test 105, tainted($foo = $bar);
525 test 106, tainted($bar = $bar);
526 test 107, tainted($bar += $bar);
527 test 108, tainted($bar -= $bar);
528 test 109, tainted($bar *= $bar);
529 test 110, tainted($bar++);
530 test 111, tainted($bar /= $bar);
531 test 112, tainted($bar += 0);
532 test 113, tainted($bar -= 2);
533 test 114, tainted($bar *= -1);
534 test 115, tainted($bar /= 1);
535 test 116, tainted($bar--);
539 # Test assignment and return of lists
541 my @foo = ("A", "tainted" . $TAINT, "B");
542 test 118, not tainted $foo[0];
543 test 119, tainted $foo[1];
544 test 120, not tainted $foo[2];
546 test 121, not tainted $bar[0];
547 test 122, tainted $bar[1];
548 test 123, not tainted $bar[2];
549 my @baz = eval { "A", "tainted" . $TAINT, "B" };
550 test 124, not tainted $baz[0];
551 test 125, tainted $baz[1];
552 test 126, not tainted $baz[2];
553 my @plugh = eval q[ "A", "tainted" . $TAINT, "B" ];
554 test 127, not tainted $plugh[0];
555 test 128, tainted $plugh[1];
556 test 129, not tainted $plugh[2];
557 my $nautilus = sub { "A", "tainted" . $TAINT, "B" };
558 test 130, not tainted ((&$nautilus)[0]);
559 test 131, tainted ((&$nautilus)[1]);
560 test 132, not tainted ((&$nautilus)[2]);
561 my @xyzzy = &$nautilus;
562 test 133, not tainted $xyzzy[0];
563 test 134, tainted $xyzzy[1];
564 test 135, not tainted $xyzzy[2];
565 my $red_october = sub { return "A", "tainted" . $TAINT, "B" };
566 test 136, not tainted ((&$red_october)[0]);
567 test 137, tainted ((&$red_october)[1]);
568 test 138, not tainted ((&$red_october)[2]);
569 my @corge = &$red_october;
570 test 139, not tainted $corge[0];
571 test 140, tainted $corge[1];
572 test 141, not tainted $corge[2];
575 # Test for system/library calls returning string data of dubious origin.
577 # No reliable %Config check for getpw*
578 if (eval { setpwent(); getpwent() }) {
580 my @getpwent = getpwent();
581 die "getpwent: $!\n" unless (@getpwent);
582 test 142,( not tainted $getpwent[0]
583 and tainted $getpwent[1]
584 and not tainted $getpwent[2]
585 and not tainted $getpwent[3]
586 and not tainted $getpwent[4]
587 and not tainted $getpwent[5]
588 and tainted $getpwent[6] # ge?cos
589 and not tainted $getpwent[7]
590 and tainted $getpwent[8]); # shell
593 for (142) { print "ok $_ # Skipped: getpwent() is not available\n" }
596 if ($Config{d_readdir}) { # pretty hard to imagine not
598 opendir(D, "op") or die "opendir: $!\n";
599 my $readdir = readdir(D);
600 test 143, tainted $readdir;
603 for (143) { print "ok $_ # Skipped: readdir() is not available\n" }
606 if ($Config{d_readlink} && $Config{d_symlink}) {
607 my $symlink = "sl$$";
609 symlink("/something/naughty", $symlink) or die "symlink: $!\n";
610 my $readlink = readlink($symlink);
611 test 144, tainted $readlink;
614 for (144) { print "ok $_ # Skipped: readlink() or symlink() is not available\n"; }
618 # test bitwise ops (regression bug)
622 test 145, not tainted $j;
625 test 146, tainted $j;
628 # test target of substitution (regression bug)
630 my $why = $TAINT."y";
632 test 147, tainted $why;
636 test 148, tainted $why;
638 $why =~ s/e/'-'.$$/ge;
639 test 149, tainted $why;
645 print "ok 150 # skipped: no IPC::SysV\n";
648 if ($Config{'extensions'} =~ /\bIPC\/SysV\b/ && $Config{d_shm}) {
653 my $id = shmget(IPC_PRIVATE, $size, S_IRWXU);
656 if (shmwrite($id, $sent, 0, 60)) {
657 if (shmread($id, $rcvd, 0, 60)) {
658 substr($rcvd, index($rcvd, "\0")) = '';
660 warn "# shmread failed: $!\n";
663 warn "# shmwrite failed: $!\n";
665 shmctl($id, IPC_RMID, 0) or warn "# shmctl failed: $!\n";
667 warn "# shmget failed: $!\n";
670 if ($rcvd eq $sent) {
671 test 150, tainted $rcvd;
673 print "ok 150 # Skipped: SysV shared memory operation failed\n";
676 print "ok 150 # Skipped: SysV shared memory is not available\n";
683 print "ok 151 # skipped: no IPC::SysV\n";
686 if ($Config{'extensions'} =~ /\bIPC\/SysV\b/ && $Config{d_msg}) {
688 my $id = msgget(IPC_PRIVATE, IPC_CREAT | S_IRWXU);
690 my $sent = "message";
691 my $type_sent = 1234;
696 if (msgsnd($id, pack("l! a*", $type_sent, $sent), 0)) {
697 if (msgrcv($id, $rcvd, 60, 0, 0)) {
698 ($type_rcvd, $rcvd) = unpack("l! a*", $rcvd);
700 warn "# msgrcv failed\n";
703 warn "# msgsnd failed\n";
705 msgctl($id, IPC_RMID, 0) or warn "# msgctl failed: $!\n";
707 warn "# msgget failed\n";
710 if ($rcvd eq $sent && $type_sent == $type_rcvd) {
711 test 151, tainted $rcvd;
713 print "ok 151 # Skipped: SysV message queue operation failed\n";
716 print "ok 151 # Skipped: SysV message queues are not available\n";
721 # bug id 20001004.006
723 open IN, "./TEST" or warn "$0: cannot read ./TEST: $!" ;
727 print "not " unless tainted($a) && tainted($b) && !defined($b);
733 # bug id 20001004.007
735 open IN, "./TEST" or warn "$0: cannot read ./TEST: $!" ;
740 print "not " unless !tainted($c->{a}) && tainted($c->{b});
745 print "not " unless tainted($d->{a}) && !tainted($d->{b});
749 b => { c => $a, d => 42 } };
750 print "not " unless !tainted($e->{a}) &&
752 tainted($e->{b}->{c}) &&
753 !tainted($e->{b}->{d});
760 # bug id 20010519.003
763 use vars qw($has_fcntl);
764 eval { require Fcntl; import Fcntl; };
770 unless ($has_fcntl) {
772 print "ok $_ # Skip: no Fcntl (no dynaloading?)\n";
775 my $evil = "foo" . $TAINT;
777 eval { sysopen(my $ro, $evil, &O_RDONLY) };
778 test 156, $@ !~ /^Insecure dependency/, $@;
780 eval { sysopen(my $wo, $evil, &O_WRONLY) };
781 test 157, $@ =~ /^Insecure dependency/, $@;
783 eval { sysopen(my $rw, $evil, &O_RDWR) };
784 test 158, $@ =~ /^Insecure dependency/, $@;
786 eval { sysopen(my $ap, $evil, &O_APPEND) };
787 test 159, $@ =~ /^Insecure dependency/, $@;
789 eval { sysopen(my $cr, $evil, &O_CREAT) };
790 test 160, $@ =~ /^Insecure dependency/, $@;
792 eval { sysopen(my $tr, $evil, &O_TRUNC) };
793 test 161, $@ =~ /^Insecure dependency/, $@;
795 eval { sysopen(my $ro, "foo", &O_RDONLY | $evil) };
796 test 162, $@ !~ /^Insecure dependency/, $@;
798 eval { sysopen(my $wo, "foo", &O_WRONLY | $evil) };
799 test 163, $@ =~ /^Insecure dependency/, $@;
801 eval { sysopen(my $rw, "foo", &O_RDWR | $evil) };
802 test 164, $@ =~ /^Insecure dependency/, $@;
804 eval { sysopen(my $ap, "foo", &O_APPEND | $evil) };
805 test 165, $@ =~ /^Insecure dependency/, $@;
807 eval { sysopen(my $cr, "foo", &O_CREAT | $evil) };
808 test 166, $@ =~ /^Insecure dependency/, $@;
810 eval { sysopen(my $tr, "foo", &O_TRUNC | $evil) };
811 test 167, $@ =~ /^Insecure dependency/, $@;
813 eval { sysopen(my $ro, "foo", &O_RDONLY, $evil) };
814 test 168, $@ !~ /^Insecure dependency/, $@;
816 eval { sysopen(my $wo, "foo", &O_WRONLY, $evil) };
817 test 169, $@ =~ /^Insecure dependency/, $@;
819 eval { sysopen(my $rw, "foo", &O_RDWR, $evil) };
820 test 170, $@ =~ /^Insecure dependency/, $@;
822 eval { sysopen(my $ap, "foo", &O_APPEND, $evil) };
823 test 171, $@ =~ /^Insecure dependency/, $@;
825 eval { sysopen(my $cr, "foo", &O_CREAT, $evil) };
826 test 172, $@ =~ /^Insecure dependency/, $@;
828 eval { sysopen(my $tr, "foo", &O_TRUNC, $evil) };
829 test 173, $@ =~ /^Insecure dependency/, $@;
831 unlink("foo"); # not unlink($evil), because that would fail...
840 local $SIG{__WARN__} = sub { print "not " };
843 my $divnum = shift()/1;
844 sprintf("%1.1f\n", $divnum);
856 # Bug ID 20010730.010
864 bless \$arg => $class;
875 my $bar = "The Big Bright Green Pleasure Machine";
877 tie my ($foo), Tie => $bar;
881 print $i == 1 ? "ok 175\n" : "not ok 175\n"
886 # Check that all environment variables are tainted.
888 while (my ($k, $v) = each %ENV) {
890 # These we have untainted explicitly earlier.
891 $k !~ /^(BASH_ENV|CDPATH|ENV|IFS|PATH|TEMP|TERM|TMP)$/) {
892 push @untainted, "# '$k' = '$v'\n";
895 print @untainted == 0 ? "ok 176\n" : "not ok 176\n";
896 print "# untainted:\n", @untainted if @untainted;
900 ok( ${^TAINT}, '$^TAINT is on' );
902 eval { ${^TAINT} = 0 };
903 ok( ${^TAINT}, '$^TAINT is not assignable' );
904 ok( $@ =~ /^Modification of a read-only value attempted/,
905 'Assigning to ${^TAINT} fails' );
910 my $re1 = qr/x$TAINT/;
911 test 180, tainted $re1;
913 my $re2 = qr/^$re1\z/;
914 test 181, tainted $re2;
917 test 182, tainted $re3;
921 print "ok 183 # Skipped: system {} has different semantics\n";
926 local $ENV{PATH} .= $TAINT;
927 eval { system { "echo" } "/arg0", "arg1" };
928 test 183, $@ =~ /^Insecure \$ENV/;
931 # bug 20020208.005 plus some extras
932 # single arg exec/system are tests 80-83
933 use if $] lt '5.009', warnings => FATAL => 'taint';
934 my $err = $] ge '5.009' ? qr/^Insecure dependency/
935 : qr/^Use of tainted arguments/;
936 test 184, eval { exec $TAINT, $TAINT } eq '', 'exec';
937 test 185, $@ =~ $err, $@;
938 test 186, eval { exec $TAINT $TAINT } eq '', 'exec';
939 test 187, $@ =~ $err, $@;
940 test 188, eval { exec $TAINT $TAINT, $TAINT } eq '', 'exec';
941 test 189, $@ =~ $err, $@;
942 test 190, eval { exec $TAINT 'notaint' } eq '', 'exec';
943 test 191, $@ =~ $err, $@;
944 test 192, eval { exec {'notaint'} $TAINT } eq '', 'exec';
945 test 193, $@ =~ $err, $@;
947 test 194, eval { system $TAINT, $TAINT } eq '', 'system';
948 test 195, $@ =~ $err, $@;
949 test 196, eval { system $TAINT $TAINT } eq '', 'exec';
950 test 197, $@ =~ $err, $@;
951 test 198, eval { system $TAINT $TAINT, $TAINT } eq '', 'exec';
952 test 199, $@ =~ $err, $@;
953 test 200, eval { system $TAINT 'notaint' } eq '', 'exec';
954 test 201, $@ =~ $err, $@;
955 test 202, eval { system {'notaint'} $TAINT } eq '', 'exec';
956 test 203, $@ =~ $err, $@;