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Better handling of magic methods freeing the SV
[perl5.git] / t / op / taint.t
CommitLineData
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1#!./perl -T
2#
3# Taint tests by Tom Phoenix <rootbeer@teleport.com>.
4#
5# I don't claim to know all about tainting. If anyone sees
9607fc9c 6# tests that I've missed here, please add them. But this is
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7# better than having no tests at all, right?
8#
9
10BEGIN {
11 chdir 't' if -d 't';
20822f61 12 @INC = '../lib';
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13}
14
15use strict;
16use Config;
dc459aad 17use File::Spec::Functions;
1e422769 18
09f04786 19BEGIN { require './test.pl'; }
8985fe98 20plan tests => 339;
7c36658b 21
0ecd3ba2
MG
22$| = 1;
23
c9f931b8
JH
24use vars qw($ipcsysv); # did we manage to load IPC::SysV?
25
ff504b36 26my ($old_env_path, $old_env_dcl_path, $old_env_term);
3eeba6fb 27BEGIN {
ff504b36
JM
28 $old_env_path = $ENV{'PATH'};
29 $old_env_dcl_path = $ENV{'DCL$PATH'};
30 $old_env_term = $ENV{'TERM'};
3eeba6fb
CB
31 if ($^O eq 'VMS' && !defined($Config{d_setenv})) {
32 $ENV{PATH} = $ENV{PATH};
33 $ENV{TERM} = $ENV{TERM} ne ''? $ENV{TERM} : 'dummy';
34 }
be3174d2
GS
35 if ($Config{'extensions'} =~ /\bIPC\/SysV\b/
36 && ($Config{d_shm} || $Config{d_msg})) {
c9f931b8
JH
37 eval { require IPC::SysV };
38 unless ($@) {
39 $ipcsysv++;
ddc3217d 40 IPC::SysV->import(qw(IPC_PRIVATE IPC_RMID IPC_CREAT S_IRWXU IPC_NOWAIT));
c9f931b8 41 }
b9d1c439 42 }
3eeba6fb
CB
43}
44
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45my $Is_VMS = $^O eq 'VMS';
46my $Is_MSWin32 = $^O eq 'MSWin32';
47my $Is_NetWare = $^O eq 'NetWare';
48my $Is_Dos = $^O eq 'dos';
49my $Is_Cygwin = $^O eq 'cygwin';
8c2c7bd1 50my $Is_OpenBSD = $^O eq 'openbsd';
08322f8f 51my $Invoke_Perl = $Is_VMS ? 'MCR Sys$Disk:[]Perl.exe' :
09f04786 52 $Is_MSWin32 ? '.\perl' :
7b903762 53 $Is_NetWare ? 'perl' :
09f04786 54 './perl' ;
c90c0ff4 55my @MoreEnv = qw/IFS CDPATH ENV BASH_ENV/;
7bac28a0 56
1e422769 57if ($Is_VMS) {
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PP
58 my (%old, $x);
59 for $x ('DCL$PATH', @MoreEnv) {
60 ($old{$x}) = $ENV{$x} =~ /^(.*)$/ if exists $ENV{$x};
61 }
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JM
62 # VMS note: PATH and TERM are automatically created by the C
63 # library in VMS on reference to the their keys in %ENV.
64 # There is currently no way to determine if they did not exist
65 # before this test was run.
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66 eval <<EndOfCleanup;
67 END {
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JM
68 \$ENV{PATH} = \$old_env_path;
69 warn "# Note: logical name 'PATH' may have been created\n";
70 \$ENV{'TERM'} = \$old_env_term;
71 warn "# Note: logical name 'TERM' may have been created\n";
562a7b0c 72 \@ENV{keys %old} = values %old;
ff504b36
JM
73 if (defined \$old_env_dcl_path) {
74 \$ENV{'DCL\$PATH'} = \$old_env_dcl_path;
75 } else {
76 delete \$ENV{'DCL\$PATH'};
77 }
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78 }
79EndOfCleanup
80}
81
82# Sources of taint:
83# The empty tainted value, for tainting strings
84my $TAINT = substr($^X, 0, 0);
85# A tainted zero, useful for tainting numbers
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86my $TAINT0;
87{
88 no warnings;
89 $TAINT0 = 0 + $TAINT;
90}
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91
92# This taints each argument passed. All must be lvalues.
93# Side effect: It also stringifies them. :-(
94sub taint_these (@) {
95 for (@_) { $_ .= $TAINT }
96}
97
98# How to identify taint when you see it
99sub any_tainted (@) {
100 not eval { join("",@_), kill 0; 1 };
101}
102sub tainted ($) {
103 any_tainted @_;
104}
105sub all_tainted (@) {
106 for (@_) { return 0 unless tainted $_ }
107 1;
108}
109
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110
111sub test ($;$) {
112 my($ok, $diag) = @_;
113
114 my $curr_test = curr_test();
115
116 if ($ok) {
117 print "ok $curr_test\n";
1e422769 118 } else {
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119 print "not ok $curr_test\n";
120 printf "# Failed test at line %d\n", (caller)[2];
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121 for (split m/^/m, $diag) {
122 print "# $_";
123 }
9607fc9c 124 print "\n" unless
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125 $diag eq ''
126 or substr($diag, -1) eq "\n";
127 }
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128
129 next_test();
130
131 return $ok;
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132}
133
134# We need an external program to call.
7b903762 135my $ECHO = ($Is_MSWin32 ? ".\\echo$$" : ($Is_NetWare ? "echo$$" : "./echo$$"));
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136END { unlink $ECHO }
137open PROG, "> $ECHO" or die "Can't create $ECHO: $!";
138print PROG 'print "@ARGV\n"', "\n";
139close PROG;
140my $echo = "$Invoke_Perl $ECHO";
141
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JH
142my $TEST = catfile(curdir(), 'TEST');
143
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144# First, let's make sure that Perl is checking the dangerous
145# environment variables. Maybe they aren't set yet, so we'll
146# taint them ourselves.
147{
148 $ENV{'DCL$PATH'} = '' if $Is_VMS;
149
f68313a1
SH
150 if ($Is_MSWin32 && $Config{ccname} =~ /bcc32/ && ! -f 'cc3250mt.dll') {
151 my $bcc_dir;
152 foreach my $dir (split /$Config{path_sep}/, $ENV{PATH}) {
153 if (-f "$dir/cc3250mt.dll") {
154 $bcc_dir = $dir and last;
155 }
156 }
157 if (defined $bcc_dir) {
158 require File::Copy;
159 File::Copy::copy("$bcc_dir/cc3250mt.dll", '.') or
160 die "$0: failed to copy cc3250mt.dll: $!\n";
161 eval q{
162 END { unlink "cc3250mt.dll" }
163 };
164 }
165 }
e59c8b07 166 $ENV{PATH} = ($Is_Cygwin) ? '/usr/bin' : '';
c90c0ff4 167 delete @ENV{@MoreEnv};
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PP
168 $ENV{TERM} = 'dumb';
169
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170 test eval { `$echo 1` } eq "1\n";
171
172 SKIP: {
173 skip "Environment tainting tests skipped", 4
7b903762 174 if $Is_MSWin32 || $Is_NetWare || $Is_VMS || $Is_Dos;
7bac28a0 175
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PP
176 my @vars = ('PATH', @MoreEnv);
177 while (my $v = $vars[0]) {
178 local $ENV{$v} = $TAINT;
179 last if eval { `$echo 1` };
180 last unless $@ =~ /^Insecure \$ENV{$v}/;
181 shift @vars;
182 }
09f04786 183 test !@vars, "@vars";
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PP
184
185 # tainted $TERM is unsafe only if it contains metachars
186 local $ENV{TERM};
187 $ENV{TERM} = 'e=mc2';
09f04786 188 test eval { `$echo 1` } eq "1\n";
c90c0ff4 189 $ENV{TERM} = 'e=mc2' . $TAINT;
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190 test !eval { `$echo 1` };
191 test $@ =~ /^Insecure \$ENV{TERM}/, $@;
5aabfad6 192 }
7bac28a0 193
9607fc9c 194 my $tmp;
2986a63f 195 if ($^O eq 'os2' || $^O eq 'amigaos' || $Is_MSWin32 || $Is_NetWare || $Is_Dos) {
48c036b1
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196 print "# all directories are writeable\n";
197 }
198 else {
9607fc9c 199 $tmp = (grep { defined and -d and (stat _)[2] & 2 }
099f76bb 200 qw(sys$scratch /tmp /var/tmp /usr/tmp),
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PP
201 @ENV{qw(TMP TEMP)})[0]
202 or print "# can't find world-writeable directory to test PATH\n";
203 }
204
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205 SKIP: {
206 skip "all directories are writeable", 2 unless $tmp;
207
7bac28a0 208 local $ENV{PATH} = $tmp;
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209 test !eval { `$echo 1` };
210 test $@ =~ /^Insecure directory in \$ENV{PATH}/, $@;
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211 }
212
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213 SKIP: {
214 skip "This is not VMS", 4 unless $Is_VMS;
215
1e422769 216 $ENV{'DCL$PATH'} = $TAINT;
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217 test eval { `$echo 1` } eq '';
218 test $@ =~ /^Insecure \$ENV{DCL\$PATH}/, $@;
219 SKIP: {
220 skip q[can't find world-writeable directory to test DCL$PATH], 2
25fb98c0 221 unless $tmp;
09f04786 222
9607fc9c 223 $ENV{'DCL$PATH'} = $tmp;
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224 test eval { `$echo 1` } eq '';
225 test $@ =~ /^Insecure directory in \$ENV{DCL\$PATH}/, $@;
9607fc9c 226 }
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227 $ENV{'DCL$PATH'} = '';
228 }
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229}
230
231# Let's see that we can taint and untaint as needed.
232{
233 my $foo = $TAINT;
09f04786 234 test tainted $foo;
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PP
235
236 # That was a sanity check. If it failed, stop the insanity!
237 die "Taint checks don't seem to be enabled" unless tainted $foo;
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238
239 $foo = "foo";
09f04786 240 test not tainted $foo;
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241
242 taint_these($foo);
09f04786 243 test tainted $foo;
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244
245 my @list = 1..10;
09f04786 246 test not any_tainted @list;
1e422769 247 taint_these @list[1,3,5,7,9];
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248 test any_tainted @list;
249 test all_tainted @list[1,3,5,7,9];
250 test not any_tainted @list[0,2,4,6,8];
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251
252 ($foo) = $foo =~ /(.+)/;
09f04786 253 test not tainted $foo;
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254
255 $foo = $1 if ('bar' . $TAINT) =~ /(.+)/;
09f04786
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256 test not tainted $foo;
257 test $foo eq 'bar';
1e422769 258
b3eb6a9b
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259 {
260 use re 'taint';
261
262 ($foo) = ('bar' . $TAINT) =~ /(.+)/;
09f04786
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263 test tainted $foo;
264 test $foo eq 'bar';
b3eb6a9b
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265
266 $foo = $1 if ('bar' . $TAINT) =~ /(.+)/;
09f04786
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267 test tainted $foo;
268 test $foo eq 'bar';
b3eb6a9b
GS
269 }
270
271 $foo = $1 if 'bar' =~ /(.+)$TAINT/;
09f04786
MS
272 test tainted $foo;
273 test $foo eq 'bar';
48c036b1 274
1e422769 275 my $pi = 4 * atan2(1,1) + $TAINT0;
09f04786 276 test tainted $pi;
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277
278 ($pi) = $pi =~ /(\d+\.\d+)/;
09f04786
MS
279 test not tainted $pi;
280 test sprintf("%.5f", $pi) eq '3.14159';
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281}
282
283# How about command-line arguments? The problem is that we don't
284# always get some, so we'll run another process with some.
dc459aad 285SKIP: {
1ab9acc5 286 my $arg = tempfile();
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PP
287 open PROG, "> $arg" or die "Can't create $arg: $!";
288 print PROG q{
289 eval { join('', @ARGV), kill 0 };
290 exit 0 if $@ =~ /^Insecure dependency/;
291 print "# Oops: \$@ was [$@]\n";
292 exit 1;
293 };
294 close PROG;
295 print `$Invoke_Perl "-T" $arg and some suspect arguments`;
09f04786 296 test !$?, "Exited with status $?";
1e422769
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297 unlink $arg;
298}
299
300# Reading from a file should be tainted
301{
09f04786 302 test open(FILE, $TEST), "Couldn't open '$TEST': $!";
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PP
303
304 my $block;
305 sysread(FILE, $block, 100);
9607fc9c 306 my $line = <FILE>;
1e422769 307 close FILE;
09f04786
MS
308 test tainted $block;
309 test tainted $line;
1e422769
PP
310}
311
c90c0ff4
PP
312# Globs should be forbidden, except under VMS,
313# which doesn't spawn an external program.
09f04786
MS
314SKIP: {
315 skip "globs should be forbidden", 2 if 1 or $Is_VMS;
316
7bac28a0 317 my @globs = eval { <*> };
09f04786 318 test @globs == 0 && $@ =~ /^Insecure dependency/;
1e422769 319
7bac28a0 320 @globs = eval { glob '*' };
09f04786 321 test @globs == 0 && $@ =~ /^Insecure dependency/;
1e422769
PP
322}
323
324# Output of commands should be tainted
325{
326 my $foo = `$echo abc`;
09f04786 327 test tainted $foo;
1e422769
PP
328}
329
330# Certain system variables should be tainted
331{
09f04786 332 test all_tainted $^X, $0;
1e422769
PP
333}
334
335# Results of matching should all be untainted
336{
337 my $foo = "abcdefghi" . $TAINT;
09f04786 338 test tainted $foo;
1e422769
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339
340 $foo =~ /def/;
09f04786 341 test not any_tainted $`, $&, $';
1e422769
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342
343 $foo =~ /(...)(...)(...)/;
09f04786 344 test not any_tainted $1, $2, $3, $+;
1e422769
PP
345
346 my @bar = $foo =~ /(...)(...)(...)/;
09f04786 347 test not any_tainted @bar;
1e422769 348
09f04786
MS
349 test tainted $foo; # $foo should still be tainted!
350 test $foo eq "abcdefghi";
1e422769
PP
351}
352
353# Operations which affect files can't use tainted data.
354{
09f04786
MS
355 test !eval { chmod 0, $TAINT }, 'chmod';
356 test $@ =~ /^Insecure dependency/, $@;
1e422769 357
9607fc9c
PP
358 # There is no feature test in $Config{} for truncate,
359 # so we allow for the possibility that it's missing.
09f04786
MS
360 test !eval { truncate 'NoSuChFiLe', $TAINT0 }, 'truncate';
361 test $@ =~ /^(?:Insecure dependency|truncate not implemented)/, $@;
1e422769 362
09f04786
MS
363 test !eval { rename '', $TAINT }, 'rename';
364 test $@ =~ /^Insecure dependency/, $@;
1e422769 365
09f04786
MS
366 test !eval { unlink $TAINT }, 'unlink';
367 test $@ =~ /^Insecure dependency/, $@;
9607fc9c 368
09f04786
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369 test !eval { utime $TAINT }, 'utime';
370 test $@ =~ /^Insecure dependency/, $@;
48c036b1 371
09f04786
MS
372 SKIP: {
373 skip "chown() is not available", 2 unless $Config{d_chown};
1e422769 374
09f04786
MS
375 test !eval { chown -1, -1, $TAINT }, 'chown';
376 test $@ =~ /^Insecure dependency/, $@;
1e422769
PP
377 }
378
09f04786
MS
379 SKIP: {
380 skip "link() is not available", 2 unless $Config{d_link};
381
382 test !eval { link $TAINT, '' }, 'link';
383 test $@ =~ /^Insecure dependency/, $@;
1e422769 384 }
09f04786
MS
385
386 SKIP: {
387 skip "symlink() is not available", 2 unless $Config{d_symlink};
388
389 test !eval { symlink $TAINT, '' }, 'symlink';
390 test $@ =~ /^Insecure dependency/, $@;
1e422769
PP
391 }
392}
393
394# Operations which affect directories can't use tainted data.
395{
68b8dcc8 396 test !eval { mkdir "foo".$TAINT, 0755 . $TAINT0 }, 'mkdir';
09f04786 397 test $@ =~ /^Insecure dependency/, $@;
1e422769 398
09f04786
MS
399 test !eval { rmdir $TAINT }, 'rmdir';
400 test $@ =~ /^Insecure dependency/, $@;
9607fc9c 401
09f04786
MS
402 test !eval { chdir "foo".$TAINT }, 'chdir';
403 test $@ =~ /^Insecure dependency/, $@;
48c036b1 404
09f04786
MS
405 SKIP: {
406 skip "chroot() is not available", 2 unless $Config{d_chroot};
407
408 test !eval { chroot $TAINT }, 'chroot';
409 test $@ =~ /^Insecure dependency/, $@;
1e422769
PP
410 }
411}
412
413# Some operations using files can't use tainted data.
414{
415 my $foo = "imaginary library" . $TAINT;
09f04786
MS
416 test !eval { require $foo }, 'require';
417 test $@ =~ /^Insecure dependency/, $@;
1e422769 418
1c25d394 419 my $filename = tempfile(); # NB: $filename isn't tainted!
1e422769
PP
420 $foo = $filename . $TAINT;
421 unlink $filename; # in any case
422
09f04786
MS
423 test !eval { open FOO, $foo }, 'open for read';
424 test $@ eq '', $@; # NB: This should be allowed
9d116dd7
JH
425
426 # Try first new style but allow also old style.
327ccce1
YST
427 # We do not want the whole taint.t to fail
428 # just because Errno possibly failing.
09f04786 429 test eval('$!{ENOENT}') ||
61ae2fbf 430 $! == 2 || # File not found
cd86ed9d 431 ($Is_Dos && $! == 22);
1e422769 432
09f04786
MS
433 test !eval { open FOO, "> $foo" }, 'open for write';
434 test $@ =~ /^Insecure dependency/, $@;
1e422769
PP
435}
436
437# Commands to the system can't use tainted data
438{
439 my $foo = $TAINT;
440
09f04786
MS
441 SKIP: {
442 skip "open('|') is not available", 4 if $^O eq 'amigaos';
443
444 test !eval { open FOO, "| x$foo" }, 'popen to';
445 test $@ =~ /^Insecure dependency/, $@;
1e422769 446
09f04786
MS
447 test !eval { open FOO, "x$foo |" }, 'popen from';
448 test $@ =~ /^Insecure dependency/, $@;
48c036b1 449 }
1e422769 450
09f04786
MS
451 test !eval { exec $TAINT }, 'exec';
452 test $@ =~ /^Insecure dependency/, $@;
9607fc9c 453
09f04786
MS
454 test !eval { system $TAINT }, 'system';
455 test $@ =~ /^Insecure dependency/, $@;
48c036b1 456
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PP
457 $foo = "*";
458 taint_these $foo;
459
09f04786
MS
460 test !eval { `$echo 1$foo` }, 'backticks';
461 test $@ =~ /^Insecure dependency/, $@;
1e422769 462
09f04786
MS
463 SKIP: {
464 # wildcard expansion doesn't invoke shell on VMS, so is safe
465 skip "This is not VMS", 2 unless $Is_VMS;
466
467 test join('', eval { glob $foo } ) ne '', 'globbing';
468 test $@ eq '', $@;
1e422769
PP
469 }
470}
471
472# Operations which affect processes can't use tainted data.
473{
09f04786
MS
474 test !eval { kill 0, $TAINT }, 'kill';
475 test $@ =~ /^Insecure dependency/, $@;
1e422769 476
09f04786
MS
477 SKIP: {
478 skip "setpgrp() is not available", 2 unless $Config{d_setpgrp};
1e422769 479
09f04786
MS
480 test !eval { setpgrp 0, $TAINT0 }, 'setpgrp';
481 test $@ =~ /^Insecure dependency/, $@;
1e422769 482 }
09f04786
MS
483
484 SKIP: {
485 skip "setpriority() is not available", 2 unless $Config{d_setprior};
486
487 test !eval { setpriority 0, $TAINT0, $TAINT0 }, 'setpriority';
488 test $@ =~ /^Insecure dependency/, $@;
1e422769
PP
489 }
490}
491
492# Some miscellaneous operations can't use tainted data.
493{
09f04786
MS
494 SKIP: {
495 skip "syscall() is not available", 2 unless $Config{d_syscall};
496
497 test !eval { syscall $TAINT }, 'syscall';
498 test $@ =~ /^Insecure dependency/, $@;
1e422769
PP
499 }
500
501 {
502 my $foo = "x" x 979;
503 taint_these $foo;
504 local *FOO;
1c25d394 505 my $temp = tempfile();
09f04786 506 test open(FOO, "> $temp"), "Couldn't open $temp for write: $!";
1e422769 507
09f04786
MS
508 test !eval { ioctl FOO, $TAINT0, $foo }, 'ioctl';
509 test $@ =~ /^Insecure dependency/, $@;
1e422769 510
09f04786
MS
511 SKIP: {
512 skip "fcntl() is not available", 2 unless $Config{d_fcntl};
513
514 test !eval { fcntl FOO, $TAINT0, $foo }, 'fcntl';
515 test $@ =~ /^Insecure dependency/, $@;
1e422769
PP
516 }
517
518 close FOO;
519 }
520}
521
9607fc9c 522# Some tests involving references
1e422769
PP
523{
524 my $foo = 'abc' . $TAINT;
525 my $fooref = \$foo;
09f04786
MS
526 test not tainted $fooref;
527 test tainted $$fooref;
528 test tainted $foo;
1e422769 529}
54310121
PP
530
531# Some tests involving assignment
532{
533 my $foo = $TAINT0;
534 my $bar = $foo;
09f04786
MS
535 test all_tainted $foo, $bar;
536 test tainted($foo = $bar);
537 test tainted($bar = $bar);
538 test tainted($bar += $bar);
539 test tainted($bar -= $bar);
540 test tainted($bar *= $bar);
541 test tainted($bar++);
542 test tainted($bar /= $bar);
543 test tainted($bar += 0);
544 test tainted($bar -= 2);
545 test tainted($bar *= -1);
546 test tainted($bar /= 1);
547 test tainted($bar--);
548 test $bar == 0;
54310121 549}
a1f49e72
CS
550
551# Test assignment and return of lists
552{
553 my @foo = ("A", "tainted" . $TAINT, "B");
09f04786
MS
554 test not tainted $foo[0];
555 test tainted $foo[1];
556 test not tainted $foo[2];
a1f49e72 557 my @bar = @foo;
09f04786
MS
558 test not tainted $bar[0];
559 test tainted $bar[1];
560 test not tainted $bar[2];
a1f49e72 561 my @baz = eval { "A", "tainted" . $TAINT, "B" };
09f04786
MS
562 test not tainted $baz[0];
563 test tainted $baz[1];
564 test not tainted $baz[2];
a1f49e72 565 my @plugh = eval q[ "A", "tainted" . $TAINT, "B" ];
09f04786
MS
566 test not tainted $plugh[0];
567 test tainted $plugh[1];
568 test not tainted $plugh[2];
a1f49e72 569 my $nautilus = sub { "A", "tainted" . $TAINT, "B" };
09f04786
MS
570 test not tainted ((&$nautilus)[0]);
571 test tainted ((&$nautilus)[1]);
572 test not tainted ((&$nautilus)[2]);
a1f49e72 573 my @xyzzy = &$nautilus;
09f04786
MS
574 test not tainted $xyzzy[0];
575 test tainted $xyzzy[1];
576 test not tainted $xyzzy[2];
a1f49e72 577 my $red_october = sub { return "A", "tainted" . $TAINT, "B" };
09f04786
MS
578 test not tainted ((&$red_october)[0]);
579 test tainted ((&$red_october)[1]);
580 test not tainted ((&$red_october)[2]);
a1f49e72 581 my @corge = &$red_october;
09f04786
MS
582 test not tainted $corge[0];
583 test tainted $corge[1];
584 test not tainted $corge[2];
a1f49e72 585}
fb73857a
PP
586
587# Test for system/library calls returning string data of dubious origin.
588{
589 # No reliable %Config check for getpw*
09f04786
MS
590 SKIP: {
591 skip "getpwent() is not available", 1 unless
592 eval { setpwent(); getpwent() };
593
fb73857a
PP
594 setpwent();
595 my @getpwent = getpwent();
596 die "getpwent: $!\n" unless (@getpwent);
09f04786 597 test ( not tainted $getpwent[0]
2959b6e3 598 and tainted $getpwent[1]
fb73857a
PP
599 and not tainted $getpwent[2]
600 and not tainted $getpwent[3]
601 and not tainted $getpwent[4]
602 and not tainted $getpwent[5]
3972a534 603 and tainted $getpwent[6] # ge?cos
fb73857a 604 and not tainted $getpwent[7]
3972a534 605 and tainted $getpwent[8]); # shell
fb73857a 606 endpwent();
fb73857a
PP
607 }
608
09f04786
MS
609 SKIP: {
610 # pretty hard to imagine not
611 skip "readdir() is not available", 1 unless $Config{d_readdir};
612
fb73857a
PP
613 local(*D);
614 opendir(D, "op") or die "opendir: $!\n";
615 my $readdir = readdir(D);
09f04786
MS
616 test tainted $readdir;
617 closedir(D);
fb73857a
PP
618 }
619
09f04786
MS
620 SKIP: {
621 skip "readlink() or symlink() is not available" unless
622 $Config{d_readlink} && $Config{d_symlink};
623
fb73857a
PP
624 my $symlink = "sl$$";
625 unlink($symlink);
dc459aad
JH
626 my $sl = "/something/naughty";
627 # it has to be a real path on Mac OS
dc459aad 628 symlink($sl, $symlink) or die "symlink: $!\n";
fb73857a 629 my $readlink = readlink($symlink);
09f04786 630 test tainted $readlink;
fb73857a 631 unlink($symlink);
fb73857a
PP
632 }
633}
634
635# test bitwise ops (regression bug)
636{
637 my $why = "y";
638 my $j = "x" | $why;
09f04786 639 test not tainted $j;
fb73857a
PP
640 $why = $TAINT."y";
641 $j = "x" | $why;
09f04786 642 test tainted $j;
fb73857a
PP
643}
644
48c036b1
GS
645# test target of substitution (regression bug)
646{
647 my $why = $TAINT."y";
648 $why =~ s/y/z/;
09f04786 649 test tainted $why;
48c036b1
GS
650
651 my $z = "[z]";
652 $why =~ s/$z/zee/;
09f04786 653 test tainted $why;
48c036b1
GS
654
655 $why =~ s/e/'-'.$$/ge;
09f04786 656 test tainted $why;
48c036b1 657}
d929ce6f 658
09f04786
MS
659
660SKIP: {
661 skip "no IPC::SysV", 2 unless $ipcsysv;
662
663 # test shmread
664 SKIP: {
665 skip "shm*() not available", 1 unless $Config{d_shm};
666
667 no strict 'subs';
668 my $sent = "foobar";
669 my $rcvd;
670 my $size = 2000;
671 my $id = shmget(IPC_PRIVATE, $size, S_IRWXU);
672
673 if (defined $id) {
674 if (shmwrite($id, $sent, 0, 60)) {
675 if (shmread($id, $rcvd, 0, 60)) {
676 substr($rcvd, index($rcvd, "\0")) = '';
677 } else {
678 warn "# shmread failed: $!\n";
679 }
680 } else {
681 warn "# shmwrite failed: $!\n";
682 }
683 shmctl($id, IPC_RMID, 0) or warn "# shmctl failed: $!\n";
684 } else {
685 warn "# shmget failed: $!\n";
686 }
687
688 skip "SysV shared memory operation failed", 1 unless
689 $rcvd eq $sent;
690
691 test tainted $rcvd;
c9f931b8 692 }
c2e66d9e 693
d929ce6f 694
09f04786
MS
695 # test msgrcv
696 SKIP: {
697 skip "msg*() not available", 1 unless $Config{d_msg};
41d6edb2 698
b9d1c439 699 no strict 'subs';
41d6edb2
JH
700 my $id = msgget(IPC_PRIVATE, IPC_CREAT | S_IRWXU);
701
702 my $sent = "message";
703 my $type_sent = 1234;
704 my $rcvd;
705 my $type_rcvd;
706
707 if (defined $id) {
ddc3217d
JH
708 if (msgsnd($id, pack("l! a*", $type_sent, $sent), IPC_NOWAIT)) {
709 if (msgrcv($id, $rcvd, 60, 0, IPC_NOWAIT)) {
41d6edb2
JH
710 ($type_rcvd, $rcvd) = unpack("l! a*", $rcvd);
711 } else {
ddc3217d 712 warn "# msgrcv failed: $!\n";
41d6edb2
JH
713 }
714 } else {
ddc3217d 715 warn "# msgsnd failed: $!\n";
41d6edb2 716 }
c2e66d9e 717 msgctl($id, IPC_RMID, 0) or warn "# msgctl failed: $!\n";
41d6edb2
JH
718 } else {
719 warn "# msgget failed\n";
720 }
721
09f04786
MS
722 SKIP: {
723 skip "SysV message queue operation failed", 1
724 unless $rcvd eq $sent && $type_sent == $type_rcvd;
725
726 test tainted $rcvd;
41d6edb2 727 }
41d6edb2
JH
728 }
729}
730
3887d568
AP
731{
732 # bug id 20001004.006
733
dc459aad 734 open IN, $TEST or warn "$0: cannot read $TEST: $!" ;
3887d568
AP
735 local $/;
736 my $a = <IN>;
737 my $b = <IN>;
09f04786
MS
738
739 ok tainted($a) && tainted($b) && !defined($b);
740
27c9684d 741 close IN;
3887d568 742}
27c9684d
AP
743
744{
745 # bug id 20001004.007
746
dc459aad 747 open IN, $TEST or warn "$0: cannot read $TEST: $!" ;
27c9684d
AP
748 my $a = <IN>;
749
750 my $c = { a => 42,
751 b => $a };
09f04786
MS
752
753 ok !tainted($c->{a}) && tainted($c->{b});
754
27c9684d
AP
755
756 my $d = { a => $a,
757 b => 42 };
09f04786
MS
758 ok tainted($d->{a}) && !tainted($d->{b});
759
27c9684d
AP
760
761 my $e = { a => 42,
762 b => { c => $a, d => 42 } };
09f04786
MS
763 ok !tainted($e->{a}) &&
764 !tainted($e->{b}) &&
765 tainted($e->{b}->{c}) &&
766 !tainted($e->{b}->{d});
27c9684d
AP
767
768 close IN;
769}
770
b94c04ac
JH
771{
772 # bug id 20010519.003
773
248c32c0
JH
774 BEGIN {
775 use vars qw($has_fcntl);
776 eval { require Fcntl; import Fcntl; };
777 unless ($@) {
778 $has_fcntl = 1;
779 }
780 }
b94c04ac 781
09f04786
MS
782 SKIP: {
783 skip "no Fcntl", 18 unless $has_fcntl;
784
248c32c0
JH
785 my $evil = "foo" . $TAINT;
786
787 eval { sysopen(my $ro, $evil, &O_RDONLY) };
09f04786 788 test $@ !~ /^Insecure dependency/, $@;
248c32c0
JH
789
790 eval { sysopen(my $wo, $evil, &O_WRONLY) };
09f04786 791 test $@ =~ /^Insecure dependency/, $@;
248c32c0
JH
792
793 eval { sysopen(my $rw, $evil, &O_RDWR) };
09f04786 794 test $@ =~ /^Insecure dependency/, $@;
248c32c0
JH
795
796 eval { sysopen(my $ap, $evil, &O_APPEND) };
09f04786 797 test $@ =~ /^Insecure dependency/, $@;
248c32c0
JH
798
799 eval { sysopen(my $cr, $evil, &O_CREAT) };
09f04786 800 test $@ =~ /^Insecure dependency/, $@;
248c32c0
JH
801
802 eval { sysopen(my $tr, $evil, &O_TRUNC) };
09f04786 803 test $@ =~ /^Insecure dependency/, $@;
248c32c0 804
09f04786
MS
805 eval { sysopen(my $ro, "foo", &O_RDONLY | $TAINT0) };
806 test $@ !~ /^Insecure dependency/, $@;
248c32c0 807
09f04786
MS
808 eval { sysopen(my $wo, "foo", &O_WRONLY | $TAINT0) };
809 test $@ =~ /^Insecure dependency/, $@;
248c32c0 810
09f04786
MS
811 eval { sysopen(my $rw, "foo", &O_RDWR | $TAINT0) };
812 test $@ =~ /^Insecure dependency/, $@;
248c32c0 813
09f04786
MS
814 eval { sysopen(my $ap, "foo", &O_APPEND | $TAINT0) };
815 test $@ =~ /^Insecure dependency/, $@;
248c32c0 816
09f04786
MS
817 eval { sysopen(my $cr, "foo", &O_CREAT | $TAINT0) };
818 test $@ =~ /^Insecure dependency/, $@;
248c32c0 819
09f04786
MS
820 eval { sysopen(my $tr, "foo", &O_TRUNC | $TAINT0) };
821 test $@ =~ /^Insecure dependency/, $@;
248c32c0 822
09f04786
MS
823 eval { sysopen(my $ro, "foo", &O_RDONLY, $TAINT0) };
824 test $@ !~ /^Insecure dependency/, $@;
248c32c0 825
09f04786
MS
826 eval { sysopen(my $wo, "foo", &O_WRONLY, $TAINT0) };
827 test $@ =~ /^Insecure dependency/, $@;
248c32c0 828
09f04786
MS
829 eval { sysopen(my $rw, "foo", &O_RDWR, $TAINT0) };
830 test $@ =~ /^Insecure dependency/, $@;
248c32c0 831
09f04786
MS
832 eval { sysopen(my $ap, "foo", &O_APPEND, $TAINT0) };
833 test $@ =~ /^Insecure dependency/, $@;
248c32c0 834
09f04786
MS
835 eval { sysopen(my $cr, "foo", &O_CREAT, $TAINT0) };
836 test $@ =~ /^Insecure dependency/, $@;
248c32c0 837
09f04786
MS
838 eval { sysopen(my $tr, "foo", &O_TRUNC, $TAINT0) };
839 test $@ =~ /^Insecure dependency/, $@;
248c32c0
JH
840
841 unlink("foo"); # not unlink($evil), because that would fail...
842 }
b94c04ac
JH
843}
844
65811bc3
JH
845{
846 # bug 20010526.004
847
848 use warnings;
849
09f04786
MS
850 my $saw_warning = 0;
851 local $SIG{__WARN__} = sub { $saw_warning = 1 };
65811bc3
JH
852
853 sub fmi {
854 my $divnum = shift()/1;
855 sprintf("%1.1f\n", $divnum);
856 }
857
858 fmi(21 . $TAINT);
859 fmi(37);
860 fmi(248);
861
09f04786 862 test !$saw_warning;
65811bc3
JH
863}
864
9e1b5a4e
A
865
866{
867 # Bug ID 20010730.010
868
869 my $i = 0;
870
871 sub Tie::TIESCALAR {
872 my $class = shift;
873 my $arg = shift;
874
875 bless \$arg => $class;
876 }
877
878 sub Tie::FETCH {
879 $i ++;
880 ${$_ [0]}
881 }
882
883
884 package main;
885
886 my $bar = "The Big Bright Green Pleasure Machine";
887 taint_these $bar;
888 tie my ($foo), Tie => $bar;
889
890 my $baz = $foo;
891
09f04786 892 ok $i == 1;
9e1b5a4e
A
893}
894
8852b6d2
JH
895{
896 # Check that all environment variables are tainted.
897 my @untainted;
898 while (my ($k, $v) = each %ENV) {
899 if (!tainted($v) &&
eb25aaf6
HS
900 # These we have explicitly untainted or set earlier.
901 $k !~ /^(BASH_ENV|CDPATH|ENV|IFS|PATH|PERL_CORE|TEMP|TERM|TMP)$/) {
8852b6d2
JH
902 push @untainted, "# '$k' = '$v'\n";
903 }
904 }
09f04786 905 test @untainted == 0, "untainted:\n @untainted";
8852b6d2 906}
9e1b5a4e
A
907
908
9aa05f58 909ok( ${^TAINT} == 1, '$^TAINT is on' );
7c36658b
MS
910
911eval { ${^TAINT} = 0 };
912ok( ${^TAINT}, '$^TAINT is not assignable' );
913ok( $@ =~ /^Modification of a read-only value attempted/,
c212f17f 914 'Assigning to ${^TAINT} fails' );
7c36658b 915
e08e52cf
AMS
916{
917 # bug 20011111.105
918
919 my $re1 = qr/x$TAINT/;
09f04786 920 test tainted $re1;
e08e52cf
AMS
921
922 my $re2 = qr/^$re1\z/;
09f04786 923 test tainted $re2;
e08e52cf
AMS
924
925 my $re3 = "$re2";
09f04786 926 test tainted $re3;
e08e52cf 927}
52a55424 928
09f04786
MS
929SKIP: {
930 skip "system {} has different semantics on Win32", 1 if $Is_MSWin32;
931
52a55424
RG
932 # bug 20010221.005
933 local $ENV{PATH} .= $TAINT;
934 eval { system { "echo" } "/arg0", "arg1" };
09f04786 935 test $@ =~ /^Insecure \$ENV/;
52a55424 936}
09f04786
MS
937
938TODO: {
939 todo_skip 'tainted %ENV warning occludes tainted arguments warning', 22
940 if $Is_VMS;
941
942 # bug 20020208.005 plus some single arg exec/system extras
06bd1802 943 my $err = qr/^Insecure dependency/ ;
09f04786
MS
944 test !eval { exec $TAINT, $TAINT }, 'exec';
945 test $@ =~ $err, $@;
946 test !eval { exec $TAINT $TAINT }, 'exec';
947 test $@ =~ $err, $@;
948 test !eval { exec $TAINT $TAINT, $TAINT }, 'exec';
949 test $@ =~ $err, $@;
950 test !eval { exec $TAINT 'notaint' }, 'exec';
951 test $@ =~ $err, $@;
952 test !eval { exec {'notaint'} $TAINT }, 'exec';
953 test $@ =~ $err, $@;
954
955 test !eval { system $TAINT, $TAINT }, 'system';
956 test $@ =~ $err, $@;
957 test !eval { system $TAINT $TAINT }, 'system';
958 test $@ =~ $err, $@;
959 test !eval { system $TAINT $TAINT, $TAINT }, 'system';
960 test $@ =~ $err, $@;
961 test !eval { system $TAINT 'notaint' }, 'system';
962 test $@ =~ $err, $@;
963 test !eval { system {'notaint'} $TAINT }, 'system';
964 test $@ =~ $err, $@;
965
966 eval {
967 no warnings;
968 system("lskdfj does not exist","with","args");
969 };
970 test !$@;
971
7b903762
RGS
972 eval {
973 no warnings;
974 exec("lskdfj does not exist","with","args");
975 };
976 test !$@;
6c8794e1
JH
977
978 # If you add tests here update also the above skip block for VMS.
bbd7eb8a 979}
a8c7c11a
HS
980
981{
982 # [ID 20020704.001] taint propagation failure
983 use re 'taint';
984 $TAINT =~ /(.*)/;
09f04786 985 test tainted(my $foo = $1);
a8c7c11a 986}
7b756e0a
RGS
987
988{
c038024b
RGS
989 # [perl #24291] this used to dump core
990 our %nonmagicalenv = ( PATH => "util" );
7b756e0a
RGS
991 local *ENV = \%nonmagicalenv;
992 eval { system("lskdfj"); };
09f04786 993 test $@ =~ /^%ENV is aliased to another variable while running with -T switch/;
c038024b 994 local *ENV = *nonmagicalenv;
7b756e0a 995 eval { system("lskdfj"); };
09f04786 996 test $@ =~ /^%ENV is aliased to %nonmagicalenv while running with -T switch/;
7b756e0a 997}
0b4182de
RD
998{
999 # [perl #24248]
1000 $TAINT =~ /(.*)/;
09f04786 1001 test !tainted($1);
0b4182de 1002 my $notaint = $1;
09f04786 1003 test !tainted($notaint);
0b4182de
RD
1004
1005 my $l;
1006 $notaint =~ /($notaint)/;
1007 $l = $1;
09f04786
MS
1008 test !tainted($1);
1009 test !tainted($l);
0b4182de
RD
1010 $notaint =~ /($TAINT)/;
1011 $l = $1;
09f04786
MS
1012 test tainted($1);
1013 test tainted($l);
0b4182de
RD
1014
1015 $TAINT =~ /($notaint)/;
1016 $l = $1;
09f04786
MS
1017 test !tainted($1);
1018 test !tainted($l);
0b4182de
RD
1019 $TAINT =~ /($TAINT)/;
1020 $l = $1;
09f04786
MS
1021 test tainted($1);
1022 test tainted($l);
0b4182de
RD
1023
1024 my $r;
1025 ($r = $TAINT) =~ /($notaint)/;
09f04786 1026 test !tainted($1);
0b4182de 1027 ($r = $TAINT) =~ /($TAINT)/;
09f04786 1028 test tainted($1);
3511154c
DM
1029
1030 # [perl #24674]
1031 # accessing $^O shoudn't taint it as a side-effect;
1032 # assigning tainted data to it is now an error
1033
09f04786 1034 test !tainted($^O);
3511154c 1035 if (!$^X) { } elsif ($^O eq 'bar') { }
09f04786 1036 test !tainted($^O);
3511154c 1037 eval '$^O = $^X';
09f04786 1038 test $@ =~ /Insecure dependency in/;
0b4182de 1039}
23634c10
AL
1040
1041EFFECTIVELY_CONSTANTS: {
1042 my $tainted_number = 12 + $TAINT0;
09f04786 1043 test tainted( $tainted_number );
23634c10
AL
1044
1045 # Even though it's always 0, it's still tainted
1046 my $tainted_product = $tainted_number * 0;
09f04786
MS
1047 test tainted( $tainted_product );
1048 test $tainted_product == 0;
23634c10
AL
1049}
1050
1051TERNARY_CONDITIONALS: {
1052 my $tainted_true = $TAINT . "blah blah blah";
1053 my $tainted_false = $TAINT0;
09f04786
MS
1054 test tainted( $tainted_true );
1055 test tainted( $tainted_false );
23634c10
AL
1056
1057 my $result = $tainted_true ? "True" : "False";
09f04786
MS
1058 test $result eq "True";
1059 test !tainted( $result );
23634c10
AL
1060
1061 $result = $tainted_false ? "True" : "False";
09f04786
MS
1062 test $result eq "False";
1063 test !tainted( $result );
23634c10
AL
1064
1065 my $untainted_whatever = "The Fabulous Johnny Cash";
1066 my $tainted_whatever = "Soft Cell" . $TAINT;
1067
1068 $result = $tainted_true ? $tainted_whatever : $untainted_whatever;
09f04786
MS
1069 test $result eq "Soft Cell";
1070 test tainted( $result );
23634c10
AL
1071
1072 $result = $tainted_false ? $tainted_whatever : $untainted_whatever;
09f04786
MS
1073 test $result eq "The Fabulous Johnny Cash";
1074 test !tainted( $result );
23634c10 1075}
65814f21
MS
1076
1077{
1078 # rt.perl.org 5900 $1 remains tainted if...
1079 # 1) The regular expression contains a scalar variable AND
1080 # 2) The regular expression appears in an elsif clause
1081
1082 my $foo = "abcdefghi" . $TAINT;
1083
1084 my $valid_chars = 'a-z';
1085 if ( $foo eq '' ) {
1086 }
1087 elsif ( $foo =~ /([$valid_chars]+)/o ) {
1088 test not tainted $1;
1089 }
1090
1091 if ( $foo eq '' ) {
1092 }
1093 elsif ( my @bar = $foo =~ /([$valid_chars]+)/o ) {
1094 test not any_tainted @bar;
1095 }
1096}
0a9c116b
DM
1097
1098# at scope exit, a restored localised value should have its old
1099# taint status, not the taint status of the current statement
1100
1101{
1102 our $x99 = $^X;
1103 test tainted $x99;
1104
1105 $x99 = '';
1106 test not tainted $x99;
1107
1108 my $c = do { local $x99; $^X };
1109 test not tainted $x99;
1110}
1111{
1112 our $x99 = $^X;
1113 test tainted $x99;
1114
1115 my $c = do { local $x99; '' };
1116 test tainted $x99;
1117}
1118
27cc343c
DM
1119# an mg_get of a tainted value during localization shouldn't taint the
1120# statement
1121
1122{
1123 eval { local $0, eval '1' };
1124 test $@ eq '';
1125}
e26a4975
DM
1126
1127# [perl #8262] //g loops infinitely on tainted data
1128
1129{
1130 my @a;
fd69380d
DM
1131 $a[0] = $^X . '-';
1132 $a[0]=~ m/(.)/g;
1133 cmp_ok pos($a[0]), '>', 0, "infinite m//g on arrays (aelemfast)";
1134
1135 my $i = 1;
1136 $a[$i] = $^X . '-';
1137 $a[$i]=~ m/(.)/g;
1138 cmp_ok pos($a[$i]), '>', 0, "infinite m//g on arrays (aelem)";
1139
1140 my %h;
1141 $h{a} = $^X . '-';
1142 $h{a}=~ m/(.)/g;
1143 cmp_ok pos($h{a}), '>', 0, "infinite m//g on hashes (helem)";
e26a4975 1144}
0aa395f8
NC
1145
1146SKIP:
1147{
1148 my $got_dualvar;
1149 eval 'use Scalar::Util "dualvar"; $got_dualvar++';
1150 skip "No Scalar::Util::dualvar" unless $got_dualvar;
1151 my $a = Scalar::Util::dualvar(3, $^X);
1152 my $b = $a + 5;
1153 is ($b, 8, "Arithmetic on tainted dualvars works");
1154}
f27977c3
MH
1155
1156# opening '|-' should not trigger $ENV{PATH} check
1157
1158{
1159 SKIP: {
1160 skip "fork() is not available", 3 unless $Config{'d_fork'};
b4fda7a3
SP
1161 skip "opening |- is not stable on threaded OpenBSD with taint", 3
1162 if $Config{useithreads} && $Is_OpenBSD;
f27977c3
MH
1163
1164 $ENV{'PATH'} = $TAINT;
1165 local $SIG{'PIPE'} = 'IGNORE';
1166 eval {
1167 my $pid = open my $pipe, '|-';
1168 if (!defined $pid) {
1169 die "open failed: $!";
1170 }
1171 if (!$pid) {
1172 kill 'KILL', $$; # child suicide
1173 }
1174 close $pipe;
1175 };
1176 test $@ !~ /Insecure \$ENV/, 'fork triggers %ENV check';
1177 test $@ eq '', 'pipe/fork/open/close failed';
1178 eval {
1179 open my $pipe, "|$Invoke_Perl -e 1";
1180 close $pipe;
1181 };
1182 test $@ =~ /Insecure \$ENV/, 'popen neglects %ENV check';
1183 }
1184}
5d121f7f
RD
1185
1186{
1187 package AUTOLOAD_TAINT;
1188 sub AUTOLOAD {
1189 our $AUTOLOAD;
1190 return if $AUTOLOAD =~ /DESTROY/;
1191 if ($AUTOLOAD =~ /untainted/) {
1192 main::ok(!main::tainted($AUTOLOAD), '$AUTOLOAD can be untainted');
1193 } else {
1194 main::ok(main::tainted($AUTOLOAD), '$AUTOLOAD can be tainted');
1195 }
1196 }
1197
1198 package main;
1199 my $o = bless [], 'AUTOLOAD_TAINT';
1200 $o->$TAINT;
1201 $o->untainted;
1202}
1203
20ee07fb
RGS
1204{
1205 # tests for tainted format in s?printf
1206 eval { printf($TAINT . "# %s\n", "foo") };
1207 like($@, qr/^Insecure dependency in printf/, q/printf doesn't like tainted formats/);
1208 eval { printf("# %s\n", $TAINT . "foo") };
1209 ok(!$@, q/printf accepts other tainted args/);
1210 eval { sprintf($TAINT . "# %s\n", "foo") };
1211 like($@, qr/^Insecure dependency in sprintf/, q/sprintf doesn't like tainted formats/);
1212 eval { sprintf("# %s\n", $TAINT . "foo") };
1213 ok(!$@, q/sprintf accepts other tainted args/);
1214}
085bde85
NC
1215
1216{
1217 # 40708
1218 my $n = 7e9;
1219 8e9 - $n;
1220
1221 my $val = $n;
1222 is ($val, '7000000000', 'Assignment to untainted variable');
1223 $val = $TAINT;
1224 $val = $n;
1225 is ($val, '7000000000', 'Assignment to tainted variable');
1226}
5e500fc8
NC
1227
1228{
5e500fc8
NC
1229 my $val = 0;
1230 my $tainted = '1' . $TAINT;
1231 eval '$val = eval $tainted;';
1232 is ($val, 0, "eval doesn't like tainted strings");
1233 like ($@, qr/^Insecure dependency in eval/);
1234
abb7fb96
NC
1235 # Rather nice code to get a tainted undef by from Rick Delaney
1236 open FH, "test.pl" or die $!;
af2d3def
RD
1237 seek FH, 0, 2 or die $!;
1238 $tainted = <FH>;
5e500fc8
NC
1239
1240 eval 'eval $tainted';
1241 like ($@, qr/^Insecure dependency in eval/);
1242}
beeaa6fd 1243
d3706118
NC
1244foreach my $ord (78, 163, 256) {
1245 # 47195
1246 my $line = 'A1' . $TAINT . chr $ord;
1247 chop $line;
1248 is($line, 'A1');
1249 $line =~ /(A\S*)/;
d3706118
NC
1250 ok(!tainted($1), "\\S match with chr $ord");
1251}
1252
ec93b65f
CS
1253{
1254 # 59998
1255 sub cr { my $x = crypt($_[0], $_[1]); $x }
1256 sub co { my $x = ~$_[0]; $x }
1257 my ($a, $b);
1258 $a = cr('hello', 'foo' . $TAINT);
1259 $b = cr('hello', 'foo');
1260 ok(tainted($a), "tainted crypt");
1261 ok(!tainted($b), "untainted crypt");
1262 $a = co('foo' . $TAINT);
1263 $b = co('foo');
1264 ok(tainted($a), "tainted complement");
1265 ok(!tainted($b), "untainted complement");
1266}
1267
302c0c93
NC
1268{
1269 my @data = qw(bonk zam zlonk qunckkk);
1270 # Clearly some sort of usenet bang-path
1271 my $string = $TAINT . join "!", @data;
1272
1273 ok(tainted($string), "tainted data");
1274
1275 my @got = split /!|,/, $string;
1276
1277 # each @got would be useful here, but I want the test for earlier perls
1278 for my $i (0 .. $#data) {
1279 ok(tainted($got[$i]), "tainted result $i");
1280 is($got[$i], $data[$i], "correct content $i");
1281 }
1282
1283 ok(tainted($string), "still tainted data");
1284
1285 my @got = split /[!,]/, $string;
1286
1287 # each @got would be useful here, but I want the test for earlier perls
1288 for my $i (0 .. $#data) {
1289 ok(tainted($got[$i]), "tainted result $i");
1290 is($got[$i], $data[$i], "correct content $i");
1291 }
1292
1293 ok(tainted($string), "still tainted data");
1294
1295 my @got = split /!/, $string;
1296
1297 # each @got would be useful here, but I want the test for earlier perls
1298 for my $i (0 .. $#data) {
1299 ok(tainted($got[$i]), "tainted result $i");
1300 is($got[$i], $data[$i], "correct content $i");
1301 }
1302}
1303
3c4fb04a
RB
1304# Bug RT #52552 - broken by change at git commit id f337b08
1305{
1306 my $x = $TAINT. q{print "Hello world\n"};
1307 my $y = pack "a*", $x;
1308 ok(tainted($y), "pack a* preserves tainting");
1309
1310 my $z = pack "A*", q{print "Hello world\n"}.$TAINT;
1311 ok(tainted($z), "pack A* preserves tainting");
1312
1313 my $zz = pack "a*a*", q{print "Hello world\n"}, $TAINT;
1314 ok(tainted($zz), "pack a*a* preserves tainting");
1315}
1316
0097b436
DM
1317# Bug RT #61976 tainted $! would show numeric rather than string value
1318
1319{
1320 my $tainted_path = substr($^X,0,0) . "/no/such/file";
1321 my $err;
1322 # $! is used in a tainted expression, so gets tainted
1323 open my $fh, $tainted_path or $err= "$!";
1324 unlike($err, qr/^\d+$/, 'tainted $!');
1325}
1326
b112cff9
DM
1327{
1328 # #6758: tainted values become untainted in tied hashes
1329 # (also applies to other value magic such as pos)
1330
1331
1332 package P6758;
1333
1334 sub TIEHASH { bless {} }
1335 sub TIEARRAY { bless {} }
1336
1337 my $i = 0;
1338
1339 sub STORE {
1340 main::ok(main::tainted($_[1]), "tied arg1 tainted");
1341 main::ok(main::tainted($_[2]), "tied arg2 tainted");
1342 $i++;
1343 }
1344
1345 package main;
1346
1347 my ($k,$v) = qw(1111 val);
1348 taint_these($k,$v);
1349 tie my @array, 'P6758';
1350 tie my %hash , 'P6758';
1351 $array[$k] = $v;
1352 $hash{$k} = $v;
1353 ok $i == 2, "tied STORE called correct number of times";
1354}
1355
3e6bd4bf
DM
1356# Bug RT #45167 the return value of sprintf sometimes wasn't tainted
1357# when the args were tainted. This only occured on the first use of
1358# sprintf; after that, its TARG has taint magic attached, so setmagic
1359# at the end works. That's why there are multiple sprintf's below, rather
1360# than just one wrapped in an inner loop. Also, any plantext betwerrn
1361# fprmat entires would correctly cause tainting to get set. so test with
1362# "%s%s" rather than eg "%s %s".
1363
1364{
1365 for my $var1 ($TAINT, "123") {
1366 for my $var2 ($TAINT0, "456") {
1367 my @s;
1368 push @s, sprintf '%s', $var1, $var2;
1369 push @s, sprintf ' %s', $var1, $var2;
1370 push @s, sprintf '%s%s', $var1, $var2;
1371 for (0..2) {
1372 ok( !(
1373 tainted($s[$_]) xor
1374 (tainted($var1) || ($_==2 && tainted($var2)))
1375 ),
1376 "sprintf fmt$_, '$var1', '$var2'");
1377 }
1378 }
1379 }
1380}
1381
1382
447ee134
DM
1383# Bug RT #67962: old tainted $1 gets treated as tainted
1384# in next untainted # match
1385
1386{
1387 use re 'taint';
1388 "abc".$TAINT =~ /(.*)/; # make $1 tainted
1389 ok(tainted($1), '$1 should be tainted');
1390
1391 my $untainted = "abcdef";
1392 ok(!tainted($untainted), '$untainted should be untainted');
1393 $untainted =~ s/(abc)/$1/;
1394 ok(!tainted($untainted), '$untainted should still be untainted');
1395 $untainted =~ s/(abc)/x$1/;
1396 ok(!tainted($untainted), '$untainted should yet still be untainted');
1397}
1398
7e6078c6 1399{
d4456f89
JD
1400 # On Windows we can't spawn a fresh Perl interpreter unless at
1401 # least the Windows system directory (usually C:\Windows\System32)
1402 # is still on the PATH. There is however no way to determine the
1403 # actual path on the current system without loading the Win32
1404 # module, so we just restore the original $ENV{PATH} here.
1405 local $ENV{PATH} = $ENV{PATH};
1406 $ENV{PATH} = $old_env_path if $Is_MSWin32;
1407
7e6078c6
NT
1408 fresh_perl_is(<<'end', "ok", { switches => [ '-T' ] },
1409 $TAINT = substr($^X, 0, 0);
00cb33d6
FC
1410 formline('@'.('<'x("2000".$TAINT)).' | @*', 'hallo', 'welt');
1411 print "ok";
7e6078c6
NT
1412end
1413 "formline survives a tainted dynamic picture");
1414}
0097b436 1415
125b9982 1416{
99e6ea26
NT
1417 ok(!tainted($^A), "format accumulator not tainted yet");
1418 formline('@ | @*', 'hallo' . $TAINT, 'welt');
1419 ok(tainted($^A), "tainted formline argument makes a tainted accumulator");
1420 $^A = "";
1421 ok(!tainted($^A), "accumulator can be explicitly untainted");
1422 formline('@' .('<'*5) . ' | @*', 'hallo', 'welt');
1423 ok(!tainted($^A), "accumulator still untainted");
1424 $^A = "" . $TAINT;
1425 ok(tainted($^A), "accumulator can be explicitly tainted");
1426 formline('@' .('<'*5) . ' | @*', 'hallo', 'welt');
1427 ok(tainted($^A), "accumulator still tainted");
1428 $^A = "";
1429 ok(!tainted($^A), "accumulator untainted again");
1430 formline('@' .('<'*5) . ' | @*', 'hallo', 'welt');
1431 ok(!tainted($^A), "accumulator still untainted");
1432 formline('@' .('<'*(5+$TAINT0)) . ' | @*', 'hallo', 'welt');
125b9982
NT
1433 TODO: {
1434 local $::TODO = "get magic handled too late?";
1435 ok(tainted($^A), "the accumulator should be tainted already");
1436 }
99e6ea26
NT
1437 ok(tainted($^A), "tainted formline picture makes a tainted accumulator");
1438}
1439
929fffa4
KW
1440{ # Bug #80610
1441 "Constant(1)" =~ / ^ ([a-z_]\w*) (?: [(] (.*) [)] )? $ /xi;
1442 my $a = $1;
1443 my $b = $2;
1444 ok(! tainted($a), "regex optimization of single char /[]/i doesn't taint");
1445 ok(! tainted($b), "regex optimization of single char /[]/i doesn't taint");
1446}
1447
8985fe98
DM
1448{
1449 # RT 81230: tainted value during FETCH created extra ref to tied obj
1450
1451 package P81230;
1452 use warnings;
1453
1454 my %h;
1455
1456 sub TIEHASH {
1457 my $x = $^X; # tainted
1458 bless \$x;
1459 }
1460 sub FETCH { my $x = $_[0]; $$x . "" }
1461
1462 tie %h, 'P81230';
1463
1464 my $w = "";
1465 local $SIG{__WARN__} = sub { $w .= "@_" };
1466
1467 untie %h if $h{"k"};
1468
1469 ::is($w, "", "RT 81230");
1470}
1471
1472
1473
beeaa6fd
NC
1474# This may bomb out with the alarm signal so keep it last
1475SKIP: {
1476 skip "No alarm()" unless $Config{d_alarm};
1477 # Test from RT #41831]
1478 # [PATCH] Bug & fix: hang when using study + taint mode (perl 5.6.1, 5.8.x)
1479
1480 my $DATA = <<'END' . $TAINT;
1481line1 is here
1482line2 is here
1483line3 is here
1484line4 is here
1485
1486END
1487
1488 #study $DATA;
1489
1490 ## don't set $SIG{ALRM}, since we'd never get to a user-level handler as
1491 ## perl is stuck in a regexp infinite loop!
1492
1493 alarm(10);
1494
1495 if ($DATA =~ /^line2.*line4/m) {
1496 fail("Should not be a match")
1497 } else {
1498 pass("Match on tainted multiline data should fail promptly");
1499 }
1500
1501 alarm(0);
1502}
1503__END__
1504# Keep the previous test last