Commit | Line | Data |
1e422769 |
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 |
1e422769 |
7 | # better than having no tests at all, right? |
8 | # |
9 | |
10 | BEGIN { |
11 | chdir 't' if -d 't'; |
20822f61 |
12 | @INC = '../lib'; |
1e422769 |
13 | } |
14 | |
15 | use strict; |
16 | use Config; |
dc459aad |
17 | use File::Spec::Functions; |
1e422769 |
18 | |
09f04786 |
19 | BEGIN { require './test.pl'; } |
f27977c3 |
20 | plan tests => 249; |
7c36658b |
21 | |
0ecd3ba2 |
22 | $| = 1; |
23 | |
c9f931b8 |
24 | use vars qw($ipcsysv); # did we manage to load IPC::SysV? |
25 | |
3eeba6fb |
26 | BEGIN { |
27 | if ($^O eq 'VMS' && !defined($Config{d_setenv})) { |
28 | $ENV{PATH} = $ENV{PATH}; |
29 | $ENV{TERM} = $ENV{TERM} ne ''? $ENV{TERM} : 'dummy'; |
30 | } |
be3174d2 |
31 | if ($Config{'extensions'} =~ /\bIPC\/SysV\b/ |
32 | && ($Config{d_shm} || $Config{d_msg})) { |
c9f931b8 |
33 | eval { require IPC::SysV }; |
34 | unless ($@) { |
35 | $ipcsysv++; |
ddc3217d |
36 | IPC::SysV->import(qw(IPC_PRIVATE IPC_RMID IPC_CREAT S_IRWXU IPC_NOWAIT)); |
c9f931b8 |
37 | } |
b9d1c439 |
38 | } |
3eeba6fb |
39 | } |
40 | |
09f04786 |
41 | my $Is_MacOS = $^O eq 'MacOS'; |
42 | my $Is_VMS = $^O eq 'VMS'; |
43 | my $Is_MSWin32 = $^O eq 'MSWin32'; |
44 | my $Is_NetWare = $^O eq 'NetWare'; |
45 | my $Is_Dos = $^O eq 'dos'; |
46 | my $Is_Cygwin = $^O eq 'cygwin'; |
47 | my $Invoke_Perl = $Is_VMS ? 'MCR Sys$Disk:[]Perl.' : |
48 | $Is_MSWin32 ? '.\perl' : |
49 | $Is_MacOS ? ':perl' : |
50 | $Is_NetWare ? 'perl' : |
51 | './perl' ; |
c90c0ff4 |
52 | my @MoreEnv = qw/IFS CDPATH ENV BASH_ENV/; |
7bac28a0 |
53 | |
1e422769 |
54 | if ($Is_VMS) { |
7bac28a0 |
55 | my (%old, $x); |
56 | for $x ('DCL$PATH', @MoreEnv) { |
57 | ($old{$x}) = $ENV{$x} =~ /^(.*)$/ if exists $ENV{$x}; |
58 | } |
1e422769 |
59 | eval <<EndOfCleanup; |
60 | END { |
3eeba6fb |
61 | \$ENV{PATH} = '' if $Config{d_setenv}; |
1e422769 |
62 | warn "# Note: logical name 'PATH' may have been deleted\n"; |
562a7b0c |
63 | \@ENV{keys %old} = values %old; |
1e422769 |
64 | } |
65 | EndOfCleanup |
66 | } |
67 | |
68 | # Sources of taint: |
69 | # The empty tainted value, for tainting strings |
70 | my $TAINT = substr($^X, 0, 0); |
71 | # A tainted zero, useful for tainting numbers |
09f04786 |
72 | my $TAINT0; |
73 | { |
74 | no warnings; |
75 | $TAINT0 = 0 + $TAINT; |
76 | } |
1e422769 |
77 | |
78 | # This taints each argument passed. All must be lvalues. |
79 | # Side effect: It also stringifies them. :-( |
80 | sub taint_these (@) { |
81 | for (@_) { $_ .= $TAINT } |
82 | } |
83 | |
84 | # How to identify taint when you see it |
85 | sub any_tainted (@) { |
86 | not eval { join("",@_), kill 0; 1 }; |
87 | } |
88 | sub tainted ($) { |
89 | any_tainted @_; |
90 | } |
91 | sub all_tainted (@) { |
92 | for (@_) { return 0 unless tainted $_ } |
93 | 1; |
94 | } |
95 | |
09f04786 |
96 | |
97 | sub test ($;$) { |
98 | my($ok, $diag) = @_; |
99 | |
100 | my $curr_test = curr_test(); |
101 | |
102 | if ($ok) { |
103 | print "ok $curr_test\n"; |
1e422769 |
104 | } else { |
09f04786 |
105 | print "not ok $curr_test\n"; |
106 | printf "# Failed test at line %d\n", (caller)[2]; |
1e422769 |
107 | for (split m/^/m, $diag) { |
108 | print "# $_"; |
109 | } |
9607fc9c |
110 | print "\n" unless |
1e422769 |
111 | $diag eq '' |
112 | or substr($diag, -1) eq "\n"; |
113 | } |
09f04786 |
114 | |
115 | next_test(); |
116 | |
117 | return $ok; |
1e422769 |
118 | } |
119 | |
120 | # We need an external program to call. |
dc459aad |
121 | my $ECHO = ($Is_MSWin32 ? ".\\echo$$" : $Is_MacOS ? ":echo$$" : ($Is_NetWare ? "echo$$" : "./echo$$")); |
1e422769 |
122 | END { unlink $ECHO } |
123 | open PROG, "> $ECHO" or die "Can't create $ECHO: $!"; |
124 | print PROG 'print "@ARGV\n"', "\n"; |
125 | close PROG; |
126 | my $echo = "$Invoke_Perl $ECHO"; |
127 | |
dc459aad |
128 | my $TEST = catfile(curdir(), 'TEST'); |
129 | |
1e422769 |
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. |
133 | { |
134 | $ENV{'DCL$PATH'} = '' if $Is_VMS; |
135 | |
f68313a1 |
136 | if ($Is_MSWin32 && $Config{ccname} =~ /bcc32/ && ! -f 'cc3250mt.dll') { |
137 | my $bcc_dir; |
138 | foreach my $dir (split /$Config{path_sep}/, $ENV{PATH}) { |
139 | if (-f "$dir/cc3250mt.dll") { |
140 | $bcc_dir = $dir and last; |
141 | } |
142 | } |
143 | if (defined $bcc_dir) { |
144 | require File::Copy; |
145 | File::Copy::copy("$bcc_dir/cc3250mt.dll", '.') or |
146 | die "$0: failed to copy cc3250mt.dll: $!\n"; |
147 | eval q{ |
148 | END { unlink "cc3250mt.dll" } |
149 | }; |
150 | } |
151 | } |
152 | |
7bac28a0 |
153 | $ENV{PATH} = ''; |
c90c0ff4 |
154 | delete @ENV{@MoreEnv}; |
7bac28a0 |
155 | $ENV{TERM} = 'dumb'; |
156 | |
8852b6d2 |
157 | if ($Is_Cygwin && ! -f 'cygwin1.dll') { |
343d3f38 |
158 | system("/usr/bin/cp /usr/bin/cygwin1.dll .") && |
159 | die "$0: failed to cp cygwin1.dll: $!\n"; |
cef9cd04 |
160 | eval q{ |
161 | END { unlink "cygwin1.dll" } |
162 | }; |
163 | } |
164 | |
165 | if ($Is_Cygwin && ! -f 'cygcrypt-0.dll' && -f '/usr/bin/cygcrypt-0.dll') { |
166 | system("/usr/bin/cp /usr/bin/cygcrypt-0.dll .") && |
167 | die "$0: failed to cp cygcrypt-0.dll: $!\n"; |
168 | eval q{ |
169 | END { unlink "cygcrypt-0.dll" } |
170 | }; |
343d3f38 |
171 | } |
172 | |
09f04786 |
173 | test eval { `$echo 1` } eq "1\n"; |
174 | |
175 | SKIP: { |
176 | skip "Environment tainting tests skipped", 4 |
177 | if $Is_MSWin32 || $Is_NetWare || $Is_VMS || $Is_Dos || $Is_MacOS; |
7bac28a0 |
178 | |
7bac28a0 |
179 | my @vars = ('PATH', @MoreEnv); |
180 | while (my $v = $vars[0]) { |
181 | local $ENV{$v} = $TAINT; |
182 | last if eval { `$echo 1` }; |
183 | last unless $@ =~ /^Insecure \$ENV{$v}/; |
184 | shift @vars; |
185 | } |
09f04786 |
186 | test !@vars, "@vars"; |
c90c0ff4 |
187 | |
188 | # tainted $TERM is unsafe only if it contains metachars |
189 | local $ENV{TERM}; |
190 | $ENV{TERM} = 'e=mc2'; |
09f04786 |
191 | test eval { `$echo 1` } eq "1\n"; |
c90c0ff4 |
192 | $ENV{TERM} = 'e=mc2' . $TAINT; |
09f04786 |
193 | test !eval { `$echo 1` }; |
194 | test $@ =~ /^Insecure \$ENV{TERM}/, $@; |
5aabfad6 |
195 | } |
7bac28a0 |
196 | |
9607fc9c |
197 | my $tmp; |
2986a63f |
198 | if ($^O eq 'os2' || $^O eq 'amigaos' || $Is_MSWin32 || $Is_NetWare || $Is_Dos) { |
48c036b1 |
199 | print "# all directories are writeable\n"; |
200 | } |
201 | else { |
9607fc9c |
202 | $tmp = (grep { defined and -d and (stat _)[2] & 2 } |
099f76bb |
203 | qw(sys$scratch /tmp /var/tmp /usr/tmp), |
9607fc9c |
204 | @ENV{qw(TMP TEMP)})[0] |
205 | or print "# can't find world-writeable directory to test PATH\n"; |
206 | } |
207 | |
09f04786 |
208 | SKIP: { |
209 | skip "all directories are writeable", 2 unless $tmp; |
210 | |
7bac28a0 |
211 | local $ENV{PATH} = $tmp; |
09f04786 |
212 | test !eval { `$echo 1` }; |
213 | test $@ =~ /^Insecure directory in \$ENV{PATH}/, $@; |
1e422769 |
214 | } |
215 | |
09f04786 |
216 | SKIP: { |
217 | skip "This is not VMS", 4 unless $Is_VMS; |
218 | |
1e422769 |
219 | $ENV{'DCL$PATH'} = $TAINT; |
09f04786 |
220 | test eval { `$echo 1` } eq ''; |
221 | test $@ =~ /^Insecure \$ENV{DCL\$PATH}/, $@; |
222 | SKIP: { |
223 | skip q[can't find world-writeable directory to test DCL$PATH], 2 |
25fb98c0 |
224 | unless $tmp; |
09f04786 |
225 | |
9607fc9c |
226 | $ENV{'DCL$PATH'} = $tmp; |
09f04786 |
227 | test eval { `$echo 1` } eq ''; |
228 | test $@ =~ /^Insecure directory in \$ENV{DCL\$PATH}/, $@; |
9607fc9c |
229 | } |
1e422769 |
230 | $ENV{'DCL$PATH'} = ''; |
231 | } |
1e422769 |
232 | } |
233 | |
234 | # Let's see that we can taint and untaint as needed. |
235 | { |
236 | my $foo = $TAINT; |
09f04786 |
237 | test tainted $foo; |
9607fc9c |
238 | |
239 | # That was a sanity check. If it failed, stop the insanity! |
240 | die "Taint checks don't seem to be enabled" unless tainted $foo; |
1e422769 |
241 | |
242 | $foo = "foo"; |
09f04786 |
243 | test not tainted $foo; |
1e422769 |
244 | |
245 | taint_these($foo); |
09f04786 |
246 | test tainted $foo; |
1e422769 |
247 | |
248 | my @list = 1..10; |
09f04786 |
249 | test not any_tainted @list; |
1e422769 |
250 | taint_these @list[1,3,5,7,9]; |
09f04786 |
251 | test any_tainted @list; |
252 | test all_tainted @list[1,3,5,7,9]; |
253 | test not any_tainted @list[0,2,4,6,8]; |
1e422769 |
254 | |
255 | ($foo) = $foo =~ /(.+)/; |
09f04786 |
256 | test not tainted $foo; |
1e422769 |
257 | |
258 | $foo = $1 if ('bar' . $TAINT) =~ /(.+)/; |
09f04786 |
259 | test not tainted $foo; |
260 | test $foo eq 'bar'; |
1e422769 |
261 | |
b3eb6a9b |
262 | { |
263 | use re 'taint'; |
264 | |
265 | ($foo) = ('bar' . $TAINT) =~ /(.+)/; |
09f04786 |
266 | test tainted $foo; |
267 | test $foo eq 'bar'; |
b3eb6a9b |
268 | |
269 | $foo = $1 if ('bar' . $TAINT) =~ /(.+)/; |
09f04786 |
270 | test tainted $foo; |
271 | test $foo eq 'bar'; |
b3eb6a9b |
272 | } |
273 | |
274 | $foo = $1 if 'bar' =~ /(.+)$TAINT/; |
09f04786 |
275 | test tainted $foo; |
276 | test $foo eq 'bar'; |
48c036b1 |
277 | |
1e422769 |
278 | my $pi = 4 * atan2(1,1) + $TAINT0; |
09f04786 |
279 | test tainted $pi; |
1e422769 |
280 | |
281 | ($pi) = $pi =~ /(\d+\.\d+)/; |
09f04786 |
282 | test not tainted $pi; |
283 | test sprintf("%.5f", $pi) eq '3.14159'; |
1e422769 |
284 | } |
285 | |
286 | # How about command-line arguments? The problem is that we don't |
287 | # always get some, so we'll run another process with some. |
dc459aad |
288 | SKIP: { |
289 | my $arg = catfile(curdir(), "arg$$"); |
1e422769 |
290 | open PROG, "> $arg" or die "Can't create $arg: $!"; |
291 | print PROG q{ |
292 | eval { join('', @ARGV), kill 0 }; |
293 | exit 0 if $@ =~ /^Insecure dependency/; |
294 | print "# Oops: \$@ was [$@]\n"; |
295 | exit 1; |
296 | }; |
297 | close PROG; |
298 | print `$Invoke_Perl "-T" $arg and some suspect arguments`; |
09f04786 |
299 | test !$?, "Exited with status $?"; |
1e422769 |
300 | unlink $arg; |
301 | } |
302 | |
303 | # Reading from a file should be tainted |
304 | { |
09f04786 |
305 | test open(FILE, $TEST), "Couldn't open '$TEST': $!"; |
1e422769 |
306 | |
307 | my $block; |
308 | sysread(FILE, $block, 100); |
9607fc9c |
309 | my $line = <FILE>; |
1e422769 |
310 | close FILE; |
09f04786 |
311 | test tainted $block; |
312 | test tainted $line; |
1e422769 |
313 | } |
314 | |
c90c0ff4 |
315 | # Globs should be forbidden, except under VMS, |
316 | # which doesn't spawn an external program. |
09f04786 |
317 | SKIP: { |
318 | skip "globs should be forbidden", 2 if 1 or $Is_VMS; |
319 | |
7bac28a0 |
320 | my @globs = eval { <*> }; |
09f04786 |
321 | test @globs == 0 && $@ =~ /^Insecure dependency/; |
1e422769 |
322 | |
7bac28a0 |
323 | @globs = eval { glob '*' }; |
09f04786 |
324 | test @globs == 0 && $@ =~ /^Insecure dependency/; |
1e422769 |
325 | } |
326 | |
327 | # Output of commands should be tainted |
328 | { |
329 | my $foo = `$echo abc`; |
09f04786 |
330 | test tainted $foo; |
1e422769 |
331 | } |
332 | |
333 | # Certain system variables should be tainted |
334 | { |
09f04786 |
335 | test all_tainted $^X, $0; |
1e422769 |
336 | } |
337 | |
338 | # Results of matching should all be untainted |
339 | { |
340 | my $foo = "abcdefghi" . $TAINT; |
09f04786 |
341 | test tainted $foo; |
1e422769 |
342 | |
343 | $foo =~ /def/; |
09f04786 |
344 | test not any_tainted $`, $&, $'; |
1e422769 |
345 | |
346 | $foo =~ /(...)(...)(...)/; |
09f04786 |
347 | test not any_tainted $1, $2, $3, $+; |
1e422769 |
348 | |
349 | my @bar = $foo =~ /(...)(...)(...)/; |
09f04786 |
350 | test not any_tainted @bar; |
1e422769 |
351 | |
09f04786 |
352 | test tainted $foo; # $foo should still be tainted! |
353 | test $foo eq "abcdefghi"; |
1e422769 |
354 | } |
355 | |
356 | # Operations which affect files can't use tainted data. |
357 | { |
09f04786 |
358 | test !eval { chmod 0, $TAINT }, 'chmod'; |
359 | test $@ =~ /^Insecure dependency/, $@; |
1e422769 |
360 | |
9607fc9c |
361 | # There is no feature test in $Config{} for truncate, |
362 | # so we allow for the possibility that it's missing. |
09f04786 |
363 | test !eval { truncate 'NoSuChFiLe', $TAINT0 }, 'truncate'; |
364 | test $@ =~ /^(?:Insecure dependency|truncate not implemented)/, $@; |
1e422769 |
365 | |
09f04786 |
366 | test !eval { rename '', $TAINT }, 'rename'; |
367 | test $@ =~ /^Insecure dependency/, $@; |
1e422769 |
368 | |
09f04786 |
369 | test !eval { unlink $TAINT }, 'unlink'; |
370 | test $@ =~ /^Insecure dependency/, $@; |
9607fc9c |
371 | |
09f04786 |
372 | test !eval { utime $TAINT }, 'utime'; |
373 | test $@ =~ /^Insecure dependency/, $@; |
48c036b1 |
374 | |
09f04786 |
375 | SKIP: { |
376 | skip "chown() is not available", 2 unless $Config{d_chown}; |
1e422769 |
377 | |
09f04786 |
378 | test !eval { chown -1, -1, $TAINT }, 'chown'; |
379 | test $@ =~ /^Insecure dependency/, $@; |
1e422769 |
380 | } |
381 | |
09f04786 |
382 | SKIP: { |
383 | skip "link() is not available", 2 unless $Config{d_link}; |
384 | |
385 | test !eval { link $TAINT, '' }, 'link'; |
386 | test $@ =~ /^Insecure dependency/, $@; |
1e422769 |
387 | } |
09f04786 |
388 | |
389 | SKIP: { |
390 | skip "symlink() is not available", 2 unless $Config{d_symlink}; |
391 | |
392 | test !eval { symlink $TAINT, '' }, 'symlink'; |
393 | test $@ =~ /^Insecure dependency/, $@; |
1e422769 |
394 | } |
395 | } |
396 | |
397 | # Operations which affect directories can't use tainted data. |
398 | { |
09f04786 |
399 | test !eval { mkdir "foo".$TAINT, 0755.$TAINT0 }, 'mkdir'; |
400 | test $@ =~ /^Insecure dependency/, $@; |
1e422769 |
401 | |
09f04786 |
402 | test !eval { rmdir $TAINT }, 'rmdir'; |
403 | test $@ =~ /^Insecure dependency/, $@; |
9607fc9c |
404 | |
09f04786 |
405 | test !eval { chdir "foo".$TAINT }, 'chdir'; |
406 | test $@ =~ /^Insecure dependency/, $@; |
48c036b1 |
407 | |
09f04786 |
408 | SKIP: { |
409 | skip "chroot() is not available", 2 unless $Config{d_chroot}; |
410 | |
411 | test !eval { chroot $TAINT }, 'chroot'; |
412 | test $@ =~ /^Insecure dependency/, $@; |
1e422769 |
413 | } |
414 | } |
415 | |
416 | # Some operations using files can't use tainted data. |
417 | { |
418 | my $foo = "imaginary library" . $TAINT; |
09f04786 |
419 | test !eval { require $foo }, 'require'; |
420 | test $@ =~ /^Insecure dependency/, $@; |
1e422769 |
421 | |
422 | my $filename = "./taintB$$"; # NB: $filename isn't tainted! |
423 | END { unlink $filename if defined $filename } |
424 | $foo = $filename . $TAINT; |
425 | unlink $filename; # in any case |
426 | |
09f04786 |
427 | test !eval { open FOO, $foo }, 'open for read'; |
428 | test $@ eq '', $@; # NB: This should be allowed |
9d116dd7 |
429 | |
430 | # Try first new style but allow also old style. |
327ccce1 |
431 | # We do not want the whole taint.t to fail |
432 | # just because Errno possibly failing. |
09f04786 |
433 | test eval('$!{ENOENT}') || |
61ae2fbf |
434 | $! == 2 || # File not found |
435 | ($Is_Dos && $! == 22) || |
436 | ($^O eq 'mint' && $! == 33); |
1e422769 |
437 | |
09f04786 |
438 | test !eval { open FOO, "> $foo" }, 'open for write'; |
439 | test $@ =~ /^Insecure dependency/, $@; |
1e422769 |
440 | } |
441 | |
442 | # Commands to the system can't use tainted data |
443 | { |
444 | my $foo = $TAINT; |
445 | |
09f04786 |
446 | SKIP: { |
447 | skip "open('|') is not available", 4 if $^O eq 'amigaos'; |
448 | |
449 | test !eval { open FOO, "| x$foo" }, 'popen to'; |
450 | test $@ =~ /^Insecure dependency/, $@; |
1e422769 |
451 | |
09f04786 |
452 | test !eval { open FOO, "x$foo |" }, 'popen from'; |
453 | test $@ =~ /^Insecure dependency/, $@; |
48c036b1 |
454 | } |
1e422769 |
455 | |
09f04786 |
456 | test !eval { exec $TAINT }, 'exec'; |
457 | test $@ =~ /^Insecure dependency/, $@; |
9607fc9c |
458 | |
09f04786 |
459 | test !eval { system $TAINT }, 'system'; |
460 | test $@ =~ /^Insecure dependency/, $@; |
48c036b1 |
461 | |
1e422769 |
462 | $foo = "*"; |
463 | taint_these $foo; |
464 | |
09f04786 |
465 | test !eval { `$echo 1$foo` }, 'backticks'; |
466 | test $@ =~ /^Insecure dependency/, $@; |
1e422769 |
467 | |
09f04786 |
468 | SKIP: { |
469 | # wildcard expansion doesn't invoke shell on VMS, so is safe |
470 | skip "This is not VMS", 2 unless $Is_VMS; |
471 | |
472 | test join('', eval { glob $foo } ) ne '', 'globbing'; |
473 | test $@ eq '', $@; |
1e422769 |
474 | } |
475 | } |
476 | |
477 | # Operations which affect processes can't use tainted data. |
478 | { |
09f04786 |
479 | test !eval { kill 0, $TAINT }, 'kill'; |
480 | test $@ =~ /^Insecure dependency/, $@; |
1e422769 |
481 | |
09f04786 |
482 | SKIP: { |
483 | skip "setpgrp() is not available", 2 unless $Config{d_setpgrp}; |
1e422769 |
484 | |
09f04786 |
485 | test !eval { setpgrp 0, $TAINT0 }, 'setpgrp'; |
486 | test $@ =~ /^Insecure dependency/, $@; |
1e422769 |
487 | } |
09f04786 |
488 | |
489 | SKIP: { |
490 | skip "setpriority() is not available", 2 unless $Config{d_setprior}; |
491 | |
492 | test !eval { setpriority 0, $TAINT0, $TAINT0 }, 'setpriority'; |
493 | test $@ =~ /^Insecure dependency/, $@; |
1e422769 |
494 | } |
495 | } |
496 | |
497 | # Some miscellaneous operations can't use tainted data. |
498 | { |
09f04786 |
499 | SKIP: { |
500 | skip "syscall() is not available", 2 unless $Config{d_syscall}; |
501 | |
502 | test !eval { syscall $TAINT }, 'syscall'; |
503 | test $@ =~ /^Insecure dependency/, $@; |
1e422769 |
504 | } |
505 | |
506 | { |
507 | my $foo = "x" x 979; |
508 | taint_these $foo; |
509 | local *FOO; |
510 | my $temp = "./taintC$$"; |
511 | END { unlink $temp } |
09f04786 |
512 | test open(FOO, "> $temp"), "Couldn't open $temp for write: $!"; |
1e422769 |
513 | |
09f04786 |
514 | test !eval { ioctl FOO, $TAINT0, $foo }, 'ioctl'; |
515 | test $@ =~ /^Insecure dependency/, $@; |
1e422769 |
516 | |
09f04786 |
517 | SKIP: { |
518 | skip "fcntl() is not available", 2 unless $Config{d_fcntl}; |
519 | |
520 | test !eval { fcntl FOO, $TAINT0, $foo }, 'fcntl'; |
521 | test $@ =~ /^Insecure dependency/, $@; |
1e422769 |
522 | } |
523 | |
524 | close FOO; |
525 | } |
526 | } |
527 | |
9607fc9c |
528 | # Some tests involving references |
1e422769 |
529 | { |
530 | my $foo = 'abc' . $TAINT; |
531 | my $fooref = \$foo; |
09f04786 |
532 | test not tainted $fooref; |
533 | test tainted $$fooref; |
534 | test tainted $foo; |
1e422769 |
535 | } |
54310121 |
536 | |
537 | # Some tests involving assignment |
538 | { |
539 | my $foo = $TAINT0; |
540 | my $bar = $foo; |
09f04786 |
541 | test all_tainted $foo, $bar; |
542 | test tainted($foo = $bar); |
543 | test tainted($bar = $bar); |
544 | test tainted($bar += $bar); |
545 | test tainted($bar -= $bar); |
546 | test tainted($bar *= $bar); |
547 | test tainted($bar++); |
548 | test tainted($bar /= $bar); |
549 | test tainted($bar += 0); |
550 | test tainted($bar -= 2); |
551 | test tainted($bar *= -1); |
552 | test tainted($bar /= 1); |
553 | test tainted($bar--); |
554 | test $bar == 0; |
54310121 |
555 | } |
a1f49e72 |
556 | |
557 | # Test assignment and return of lists |
558 | { |
559 | my @foo = ("A", "tainted" . $TAINT, "B"); |
09f04786 |
560 | test not tainted $foo[0]; |
561 | test tainted $foo[1]; |
562 | test not tainted $foo[2]; |
a1f49e72 |
563 | my @bar = @foo; |
09f04786 |
564 | test not tainted $bar[0]; |
565 | test tainted $bar[1]; |
566 | test not tainted $bar[2]; |
a1f49e72 |
567 | my @baz = eval { "A", "tainted" . $TAINT, "B" }; |
09f04786 |
568 | test not tainted $baz[0]; |
569 | test tainted $baz[1]; |
570 | test not tainted $baz[2]; |
a1f49e72 |
571 | my @plugh = eval q[ "A", "tainted" . $TAINT, "B" ]; |
09f04786 |
572 | test not tainted $plugh[0]; |
573 | test tainted $plugh[1]; |
574 | test not tainted $plugh[2]; |
a1f49e72 |
575 | my $nautilus = sub { "A", "tainted" . $TAINT, "B" }; |
09f04786 |
576 | test not tainted ((&$nautilus)[0]); |
577 | test tainted ((&$nautilus)[1]); |
578 | test not tainted ((&$nautilus)[2]); |
a1f49e72 |
579 | my @xyzzy = &$nautilus; |
09f04786 |
580 | test not tainted $xyzzy[0]; |
581 | test tainted $xyzzy[1]; |
582 | test not tainted $xyzzy[2]; |
a1f49e72 |
583 | my $red_october = sub { return "A", "tainted" . $TAINT, "B" }; |
09f04786 |
584 | test not tainted ((&$red_october)[0]); |
585 | test tainted ((&$red_october)[1]); |
586 | test not tainted ((&$red_october)[2]); |
a1f49e72 |
587 | my @corge = &$red_october; |
09f04786 |
588 | test not tainted $corge[0]; |
589 | test tainted $corge[1]; |
590 | test not tainted $corge[2]; |
a1f49e72 |
591 | } |
fb73857a |
592 | |
593 | # Test for system/library calls returning string data of dubious origin. |
594 | { |
595 | # No reliable %Config check for getpw* |
09f04786 |
596 | SKIP: { |
597 | skip "getpwent() is not available", 1 unless |
598 | eval { setpwent(); getpwent() }; |
599 | |
fb73857a |
600 | setpwent(); |
601 | my @getpwent = getpwent(); |
602 | die "getpwent: $!\n" unless (@getpwent); |
09f04786 |
603 | test ( not tainted $getpwent[0] |
2959b6e3 |
604 | and tainted $getpwent[1] |
fb73857a |
605 | and not tainted $getpwent[2] |
606 | and not tainted $getpwent[3] |
607 | and not tainted $getpwent[4] |
608 | and not tainted $getpwent[5] |
3972a534 |
609 | and tainted $getpwent[6] # ge?cos |
fb73857a |
610 | and not tainted $getpwent[7] |
3972a534 |
611 | and tainted $getpwent[8]); # shell |
fb73857a |
612 | endpwent(); |
fb73857a |
613 | } |
614 | |
09f04786 |
615 | SKIP: { |
616 | # pretty hard to imagine not |
617 | skip "readdir() is not available", 1 unless $Config{d_readdir}; |
618 | |
fb73857a |
619 | local(*D); |
620 | opendir(D, "op") or die "opendir: $!\n"; |
621 | my $readdir = readdir(D); |
09f04786 |
622 | test tainted $readdir; |
623 | closedir(D); |
fb73857a |
624 | } |
625 | |
09f04786 |
626 | SKIP: { |
627 | skip "readlink() or symlink() is not available" unless |
628 | $Config{d_readlink} && $Config{d_symlink}; |
629 | |
fb73857a |
630 | my $symlink = "sl$$"; |
631 | unlink($symlink); |
dc459aad |
632 | my $sl = "/something/naughty"; |
633 | # it has to be a real path on Mac OS |
634 | $sl = MacPerl::MakePath((MacPerl::Volumes())[0]) if $Is_MacOS; |
635 | symlink($sl, $symlink) or die "symlink: $!\n"; |
fb73857a |
636 | my $readlink = readlink($symlink); |
09f04786 |
637 | test tainted $readlink; |
fb73857a |
638 | unlink($symlink); |
fb73857a |
639 | } |
640 | } |
641 | |
642 | # test bitwise ops (regression bug) |
643 | { |
644 | my $why = "y"; |
645 | my $j = "x" | $why; |
09f04786 |
646 | test not tainted $j; |
fb73857a |
647 | $why = $TAINT."y"; |
648 | $j = "x" | $why; |
09f04786 |
649 | test tainted $j; |
fb73857a |
650 | } |
651 | |
48c036b1 |
652 | # test target of substitution (regression bug) |
653 | { |
654 | my $why = $TAINT."y"; |
655 | $why =~ s/y/z/; |
09f04786 |
656 | test tainted $why; |
48c036b1 |
657 | |
658 | my $z = "[z]"; |
659 | $why =~ s/$z/zee/; |
09f04786 |
660 | test tainted $why; |
48c036b1 |
661 | |
662 | $why =~ s/e/'-'.$$/ge; |
09f04786 |
663 | test tainted $why; |
48c036b1 |
664 | } |
d929ce6f |
665 | |
09f04786 |
666 | |
667 | SKIP: { |
668 | skip "no IPC::SysV", 2 unless $ipcsysv; |
669 | |
670 | # test shmread |
671 | SKIP: { |
672 | skip "shm*() not available", 1 unless $Config{d_shm}; |
673 | |
674 | no strict 'subs'; |
675 | my $sent = "foobar"; |
676 | my $rcvd; |
677 | my $size = 2000; |
678 | my $id = shmget(IPC_PRIVATE, $size, S_IRWXU); |
679 | |
680 | if (defined $id) { |
681 | if (shmwrite($id, $sent, 0, 60)) { |
682 | if (shmread($id, $rcvd, 0, 60)) { |
683 | substr($rcvd, index($rcvd, "\0")) = ''; |
684 | } else { |
685 | warn "# shmread failed: $!\n"; |
686 | } |
687 | } else { |
688 | warn "# shmwrite failed: $!\n"; |
689 | } |
690 | shmctl($id, IPC_RMID, 0) or warn "# shmctl failed: $!\n"; |
691 | } else { |
692 | warn "# shmget failed: $!\n"; |
693 | } |
694 | |
695 | skip "SysV shared memory operation failed", 1 unless |
696 | $rcvd eq $sent; |
697 | |
698 | test tainted $rcvd; |
c9f931b8 |
699 | } |
c2e66d9e |
700 | |
d929ce6f |
701 | |
09f04786 |
702 | # test msgrcv |
703 | SKIP: { |
704 | skip "msg*() not available", 1 unless $Config{d_msg}; |
41d6edb2 |
705 | |
b9d1c439 |
706 | no strict 'subs'; |
41d6edb2 |
707 | my $id = msgget(IPC_PRIVATE, IPC_CREAT | S_IRWXU); |
708 | |
709 | my $sent = "message"; |
710 | my $type_sent = 1234; |
711 | my $rcvd; |
712 | my $type_rcvd; |
713 | |
714 | if (defined $id) { |
ddc3217d |
715 | if (msgsnd($id, pack("l! a*", $type_sent, $sent), IPC_NOWAIT)) { |
716 | if (msgrcv($id, $rcvd, 60, 0, IPC_NOWAIT)) { |
41d6edb2 |
717 | ($type_rcvd, $rcvd) = unpack("l! a*", $rcvd); |
718 | } else { |
ddc3217d |
719 | warn "# msgrcv failed: $!\n"; |
41d6edb2 |
720 | } |
721 | } else { |
ddc3217d |
722 | warn "# msgsnd failed: $!\n"; |
41d6edb2 |
723 | } |
c2e66d9e |
724 | msgctl($id, IPC_RMID, 0) or warn "# msgctl failed: $!\n"; |
41d6edb2 |
725 | } else { |
726 | warn "# msgget failed\n"; |
727 | } |
728 | |
09f04786 |
729 | SKIP: { |
730 | skip "SysV message queue operation failed", 1 |
731 | unless $rcvd eq $sent && $type_sent == $type_rcvd; |
732 | |
733 | test tainted $rcvd; |
41d6edb2 |
734 | } |
41d6edb2 |
735 | } |
736 | } |
737 | |
3887d568 |
738 | { |
739 | # bug id 20001004.006 |
740 | |
dc459aad |
741 | open IN, $TEST or warn "$0: cannot read $TEST: $!" ; |
3887d568 |
742 | local $/; |
743 | my $a = <IN>; |
744 | my $b = <IN>; |
09f04786 |
745 | |
746 | ok tainted($a) && tainted($b) && !defined($b); |
747 | |
27c9684d |
748 | close IN; |
3887d568 |
749 | } |
27c9684d |
750 | |
751 | { |
752 | # bug id 20001004.007 |
753 | |
dc459aad |
754 | open IN, $TEST or warn "$0: cannot read $TEST: $!" ; |
27c9684d |
755 | my $a = <IN>; |
756 | |
757 | my $c = { a => 42, |
758 | b => $a }; |
09f04786 |
759 | |
760 | ok !tainted($c->{a}) && tainted($c->{b}); |
761 | |
27c9684d |
762 | |
763 | my $d = { a => $a, |
764 | b => 42 }; |
09f04786 |
765 | ok tainted($d->{a}) && !tainted($d->{b}); |
766 | |
27c9684d |
767 | |
768 | my $e = { a => 42, |
769 | b => { c => $a, d => 42 } }; |
09f04786 |
770 | ok !tainted($e->{a}) && |
771 | !tainted($e->{b}) && |
772 | tainted($e->{b}->{c}) && |
773 | !tainted($e->{b}->{d}); |
27c9684d |
774 | |
775 | close IN; |
776 | } |
777 | |
b94c04ac |
778 | { |
779 | # bug id 20010519.003 |
780 | |
248c32c0 |
781 | BEGIN { |
782 | use vars qw($has_fcntl); |
783 | eval { require Fcntl; import Fcntl; }; |
784 | unless ($@) { |
785 | $has_fcntl = 1; |
786 | } |
787 | } |
b94c04ac |
788 | |
09f04786 |
789 | SKIP: { |
790 | skip "no Fcntl", 18 unless $has_fcntl; |
791 | |
248c32c0 |
792 | my $evil = "foo" . $TAINT; |
793 | |
794 | eval { sysopen(my $ro, $evil, &O_RDONLY) }; |
09f04786 |
795 | test $@ !~ /^Insecure dependency/, $@; |
248c32c0 |
796 | |
797 | eval { sysopen(my $wo, $evil, &O_WRONLY) }; |
09f04786 |
798 | test $@ =~ /^Insecure dependency/, $@; |
248c32c0 |
799 | |
800 | eval { sysopen(my $rw, $evil, &O_RDWR) }; |
09f04786 |
801 | test $@ =~ /^Insecure dependency/, $@; |
248c32c0 |
802 | |
803 | eval { sysopen(my $ap, $evil, &O_APPEND) }; |
09f04786 |
804 | test $@ =~ /^Insecure dependency/, $@; |
248c32c0 |
805 | |
806 | eval { sysopen(my $cr, $evil, &O_CREAT) }; |
09f04786 |
807 | test $@ =~ /^Insecure dependency/, $@; |
248c32c0 |
808 | |
809 | eval { sysopen(my $tr, $evil, &O_TRUNC) }; |
09f04786 |
810 | test $@ =~ /^Insecure dependency/, $@; |
248c32c0 |
811 | |
09f04786 |
812 | eval { sysopen(my $ro, "foo", &O_RDONLY | $TAINT0) }; |
813 | test $@ !~ /^Insecure dependency/, $@; |
248c32c0 |
814 | |
09f04786 |
815 | eval { sysopen(my $wo, "foo", &O_WRONLY | $TAINT0) }; |
816 | test $@ =~ /^Insecure dependency/, $@; |
248c32c0 |
817 | |
09f04786 |
818 | eval { sysopen(my $rw, "foo", &O_RDWR | $TAINT0) }; |
819 | test $@ =~ /^Insecure dependency/, $@; |
248c32c0 |
820 | |
09f04786 |
821 | eval { sysopen(my $ap, "foo", &O_APPEND | $TAINT0) }; |
822 | test $@ =~ /^Insecure dependency/, $@; |
248c32c0 |
823 | |
09f04786 |
824 | eval { sysopen(my $cr, "foo", &O_CREAT | $TAINT0) }; |
825 | test $@ =~ /^Insecure dependency/, $@; |
248c32c0 |
826 | |
09f04786 |
827 | eval { sysopen(my $tr, "foo", &O_TRUNC | $TAINT0) }; |
828 | test $@ =~ /^Insecure dependency/, $@; |
248c32c0 |
829 | |
09f04786 |
830 | eval { sysopen(my $ro, "foo", &O_RDONLY, $TAINT0) }; |
831 | test $@ !~ /^Insecure dependency/, $@; |
248c32c0 |
832 | |
09f04786 |
833 | eval { sysopen(my $wo, "foo", &O_WRONLY, $TAINT0) }; |
834 | test $@ =~ /^Insecure dependency/, $@; |
248c32c0 |
835 | |
09f04786 |
836 | eval { sysopen(my $rw, "foo", &O_RDWR, $TAINT0) }; |
837 | test $@ =~ /^Insecure dependency/, $@; |
248c32c0 |
838 | |
09f04786 |
839 | eval { sysopen(my $ap, "foo", &O_APPEND, $TAINT0) }; |
840 | test $@ =~ /^Insecure dependency/, $@; |
248c32c0 |
841 | |
09f04786 |
842 | eval { sysopen(my $cr, "foo", &O_CREAT, $TAINT0) }; |
843 | test $@ =~ /^Insecure dependency/, $@; |
248c32c0 |
844 | |
09f04786 |
845 | eval { sysopen(my $tr, "foo", &O_TRUNC, $TAINT0) }; |
846 | test $@ =~ /^Insecure dependency/, $@; |
248c32c0 |
847 | |
848 | unlink("foo"); # not unlink($evil), because that would fail... |
849 | } |
b94c04ac |
850 | } |
851 | |
65811bc3 |
852 | { |
853 | # bug 20010526.004 |
854 | |
855 | use warnings; |
856 | |
09f04786 |
857 | my $saw_warning = 0; |
858 | local $SIG{__WARN__} = sub { $saw_warning = 1 }; |
65811bc3 |
859 | |
860 | sub fmi { |
861 | my $divnum = shift()/1; |
862 | sprintf("%1.1f\n", $divnum); |
863 | } |
864 | |
865 | fmi(21 . $TAINT); |
866 | fmi(37); |
867 | fmi(248); |
868 | |
09f04786 |
869 | test !$saw_warning; |
65811bc3 |
870 | } |
871 | |
9e1b5a4e |
872 | |
873 | { |
874 | # Bug ID 20010730.010 |
875 | |
876 | my $i = 0; |
877 | |
878 | sub Tie::TIESCALAR { |
879 | my $class = shift; |
880 | my $arg = shift; |
881 | |
882 | bless \$arg => $class; |
883 | } |
884 | |
885 | sub Tie::FETCH { |
886 | $i ++; |
887 | ${$_ [0]} |
888 | } |
889 | |
890 | |
891 | package main; |
892 | |
893 | my $bar = "The Big Bright Green Pleasure Machine"; |
894 | taint_these $bar; |
895 | tie my ($foo), Tie => $bar; |
896 | |
897 | my $baz = $foo; |
898 | |
09f04786 |
899 | ok $i == 1; |
9e1b5a4e |
900 | } |
901 | |
8852b6d2 |
902 | { |
903 | # Check that all environment variables are tainted. |
904 | my @untainted; |
905 | while (my ($k, $v) = each %ENV) { |
906 | if (!tainted($v) && |
eb25aaf6 |
907 | # These we have explicitly untainted or set earlier. |
908 | $k !~ /^(BASH_ENV|CDPATH|ENV|IFS|PATH|PERL_CORE|TEMP|TERM|TMP)$/) { |
8852b6d2 |
909 | push @untainted, "# '$k' = '$v'\n"; |
910 | } |
911 | } |
09f04786 |
912 | test @untainted == 0, "untainted:\n @untainted"; |
8852b6d2 |
913 | } |
9e1b5a4e |
914 | |
915 | |
9aa05f58 |
916 | ok( ${^TAINT} == 1, '$^TAINT is on' ); |
7c36658b |
917 | |
918 | eval { ${^TAINT} = 0 }; |
919 | ok( ${^TAINT}, '$^TAINT is not assignable' ); |
920 | ok( $@ =~ /^Modification of a read-only value attempted/, |
c212f17f |
921 | 'Assigning to ${^TAINT} fails' ); |
7c36658b |
922 | |
e08e52cf |
923 | { |
924 | # bug 20011111.105 |
925 | |
926 | my $re1 = qr/x$TAINT/; |
09f04786 |
927 | test tainted $re1; |
e08e52cf |
928 | |
929 | my $re2 = qr/^$re1\z/; |
09f04786 |
930 | test tainted $re2; |
e08e52cf |
931 | |
932 | my $re3 = "$re2"; |
09f04786 |
933 | test tainted $re3; |
e08e52cf |
934 | } |
52a55424 |
935 | |
09f04786 |
936 | SKIP: { |
937 | skip "system {} has different semantics on Win32", 1 if $Is_MSWin32; |
938 | |
52a55424 |
939 | # bug 20010221.005 |
940 | local $ENV{PATH} .= $TAINT; |
941 | eval { system { "echo" } "/arg0", "arg1" }; |
09f04786 |
942 | test $@ =~ /^Insecure \$ENV/; |
52a55424 |
943 | } |
09f04786 |
944 | |
945 | TODO: { |
946 | todo_skip 'tainted %ENV warning occludes tainted arguments warning', 22 |
947 | if $Is_VMS; |
948 | |
949 | # bug 20020208.005 plus some single arg exec/system extras |
06bd1802 |
950 | my $err = qr/^Insecure dependency/ ; |
09f04786 |
951 | test !eval { exec $TAINT, $TAINT }, 'exec'; |
952 | test $@ =~ $err, $@; |
953 | test !eval { exec $TAINT $TAINT }, 'exec'; |
954 | test $@ =~ $err, $@; |
955 | test !eval { exec $TAINT $TAINT, $TAINT }, 'exec'; |
956 | test $@ =~ $err, $@; |
957 | test !eval { exec $TAINT 'notaint' }, 'exec'; |
958 | test $@ =~ $err, $@; |
959 | test !eval { exec {'notaint'} $TAINT }, 'exec'; |
960 | test $@ =~ $err, $@; |
961 | |
962 | test !eval { system $TAINT, $TAINT }, 'system'; |
963 | test $@ =~ $err, $@; |
964 | test !eval { system $TAINT $TAINT }, 'system'; |
965 | test $@ =~ $err, $@; |
966 | test !eval { system $TAINT $TAINT, $TAINT }, 'system'; |
967 | test $@ =~ $err, $@; |
968 | test !eval { system $TAINT 'notaint' }, 'system'; |
969 | test $@ =~ $err, $@; |
970 | test !eval { system {'notaint'} $TAINT }, 'system'; |
971 | test $@ =~ $err, $@; |
972 | |
973 | eval { |
974 | no warnings; |
975 | system("lskdfj does not exist","with","args"); |
976 | }; |
977 | test !$@; |
978 | |
979 | SKIP: { |
980 | skip "no exec() on MacOS Classic" if $Is_MacOS; |
981 | |
982 | eval { |
983 | no warnings; |
984 | exec("lskdfj does not exist","with","args"); |
985 | }; |
986 | test !$@; |
63c6dcc1 |
987 | } |
6c8794e1 |
988 | |
989 | # If you add tests here update also the above skip block for VMS. |
bbd7eb8a |
990 | } |
a8c7c11a |
991 | |
992 | { |
993 | # [ID 20020704.001] taint propagation failure |
994 | use re 'taint'; |
995 | $TAINT =~ /(.*)/; |
09f04786 |
996 | test tainted(my $foo = $1); |
a8c7c11a |
997 | } |
7b756e0a |
998 | |
999 | { |
c038024b |
1000 | # [perl #24291] this used to dump core |
1001 | our %nonmagicalenv = ( PATH => "util" ); |
7b756e0a |
1002 | local *ENV = \%nonmagicalenv; |
1003 | eval { system("lskdfj"); }; |
09f04786 |
1004 | test $@ =~ /^%ENV is aliased to another variable while running with -T switch/; |
c038024b |
1005 | local *ENV = *nonmagicalenv; |
7b756e0a |
1006 | eval { system("lskdfj"); }; |
09f04786 |
1007 | test $@ =~ /^%ENV is aliased to %nonmagicalenv while running with -T switch/; |
7b756e0a |
1008 | } |
0b4182de |
1009 | { |
1010 | # [perl #24248] |
1011 | $TAINT =~ /(.*)/; |
09f04786 |
1012 | test !tainted($1); |
0b4182de |
1013 | my $notaint = $1; |
09f04786 |
1014 | test !tainted($notaint); |
0b4182de |
1015 | |
1016 | my $l; |
1017 | $notaint =~ /($notaint)/; |
1018 | $l = $1; |
09f04786 |
1019 | test !tainted($1); |
1020 | test !tainted($l); |
0b4182de |
1021 | $notaint =~ /($TAINT)/; |
1022 | $l = $1; |
09f04786 |
1023 | test tainted($1); |
1024 | test tainted($l); |
0b4182de |
1025 | |
1026 | $TAINT =~ /($notaint)/; |
1027 | $l = $1; |
09f04786 |
1028 | test !tainted($1); |
1029 | test !tainted($l); |
0b4182de |
1030 | $TAINT =~ /($TAINT)/; |
1031 | $l = $1; |
09f04786 |
1032 | test tainted($1); |
1033 | test tainted($l); |
0b4182de |
1034 | |
1035 | my $r; |
1036 | ($r = $TAINT) =~ /($notaint)/; |
09f04786 |
1037 | test !tainted($1); |
0b4182de |
1038 | ($r = $TAINT) =~ /($TAINT)/; |
09f04786 |
1039 | test tainted($1); |
3511154c |
1040 | |
1041 | # [perl #24674] |
1042 | # accessing $^O shoudn't taint it as a side-effect; |
1043 | # assigning tainted data to it is now an error |
1044 | |
09f04786 |
1045 | test !tainted($^O); |
3511154c |
1046 | if (!$^X) { } elsif ($^O eq 'bar') { } |
09f04786 |
1047 | test !tainted($^O); |
3511154c |
1048 | eval '$^O = $^X'; |
09f04786 |
1049 | test $@ =~ /Insecure dependency in/; |
0b4182de |
1050 | } |
23634c10 |
1051 | |
1052 | EFFECTIVELY_CONSTANTS: { |
1053 | my $tainted_number = 12 + $TAINT0; |
09f04786 |
1054 | test tainted( $tainted_number ); |
23634c10 |
1055 | |
1056 | # Even though it's always 0, it's still tainted |
1057 | my $tainted_product = $tainted_number * 0; |
09f04786 |
1058 | test tainted( $tainted_product ); |
1059 | test $tainted_product == 0; |
23634c10 |
1060 | } |
1061 | |
1062 | TERNARY_CONDITIONALS: { |
1063 | my $tainted_true = $TAINT . "blah blah blah"; |
1064 | my $tainted_false = $TAINT0; |
09f04786 |
1065 | test tainted( $tainted_true ); |
1066 | test tainted( $tainted_false ); |
23634c10 |
1067 | |
1068 | my $result = $tainted_true ? "True" : "False"; |
09f04786 |
1069 | test $result eq "True"; |
1070 | test !tainted( $result ); |
23634c10 |
1071 | |
1072 | $result = $tainted_false ? "True" : "False"; |
09f04786 |
1073 | test $result eq "False"; |
1074 | test !tainted( $result ); |
23634c10 |
1075 | |
1076 | my $untainted_whatever = "The Fabulous Johnny Cash"; |
1077 | my $tainted_whatever = "Soft Cell" . $TAINT; |
1078 | |
1079 | $result = $tainted_true ? $tainted_whatever : $untainted_whatever; |
09f04786 |
1080 | test $result eq "Soft Cell"; |
1081 | test tainted( $result ); |
23634c10 |
1082 | |
1083 | $result = $tainted_false ? $tainted_whatever : $untainted_whatever; |
09f04786 |
1084 | test $result eq "The Fabulous Johnny Cash"; |
1085 | test !tainted( $result ); |
23634c10 |
1086 | } |
65814f21 |
1087 | |
1088 | { |
1089 | # rt.perl.org 5900 $1 remains tainted if... |
1090 | # 1) The regular expression contains a scalar variable AND |
1091 | # 2) The regular expression appears in an elsif clause |
1092 | |
1093 | my $foo = "abcdefghi" . $TAINT; |
1094 | |
1095 | my $valid_chars = 'a-z'; |
1096 | if ( $foo eq '' ) { |
1097 | } |
1098 | elsif ( $foo =~ /([$valid_chars]+)/o ) { |
1099 | test not tainted $1; |
1100 | } |
1101 | |
1102 | if ( $foo eq '' ) { |
1103 | } |
1104 | elsif ( my @bar = $foo =~ /([$valid_chars]+)/o ) { |
1105 | test not any_tainted @bar; |
1106 | } |
1107 | } |
0a9c116b |
1108 | |
1109 | # at scope exit, a restored localised value should have its old |
1110 | # taint status, not the taint status of the current statement |
1111 | |
1112 | { |
1113 | our $x99 = $^X; |
1114 | test tainted $x99; |
1115 | |
1116 | $x99 = ''; |
1117 | test not tainted $x99; |
1118 | |
1119 | my $c = do { local $x99; $^X }; |
1120 | test not tainted $x99; |
1121 | } |
1122 | { |
1123 | our $x99 = $^X; |
1124 | test tainted $x99; |
1125 | |
1126 | my $c = do { local $x99; '' }; |
1127 | test tainted $x99; |
1128 | } |
1129 | |
27cc343c |
1130 | # an mg_get of a tainted value during localization shouldn't taint the |
1131 | # statement |
1132 | |
1133 | { |
1134 | eval { local $0, eval '1' }; |
1135 | test $@ eq ''; |
1136 | } |
e26a4975 |
1137 | |
1138 | # [perl #8262] //g loops infinitely on tainted data |
1139 | |
1140 | { |
1141 | my @a; |
c7dd0d64 |
1142 | local $::TODO = 1; |
e26a4975 |
1143 | $a[0] = $^X; |
1144 | my $i = 0; |
1145 | while($a[0]=~ m/(.)/g ) { |
1146 | last if $i++ > 10000; |
1147 | } |
86f12da2 |
1148 | cmp_ok $i, '<', 10000, "infinite m//g"; |
e26a4975 |
1149 | } |
0aa395f8 |
1150 | |
1151 | SKIP: |
1152 | { |
1153 | my $got_dualvar; |
1154 | eval 'use Scalar::Util "dualvar"; $got_dualvar++'; |
1155 | skip "No Scalar::Util::dualvar" unless $got_dualvar; |
1156 | my $a = Scalar::Util::dualvar(3, $^X); |
1157 | my $b = $a + 5; |
1158 | is ($b, 8, "Arithmetic on tainted dualvars works"); |
1159 | } |
f27977c3 |
1160 | |
1161 | # opening '|-' should not trigger $ENV{PATH} check |
1162 | |
1163 | { |
1164 | SKIP: { |
1165 | skip "fork() is not available", 3 unless $Config{'d_fork'}; |
1166 | |
1167 | $ENV{'PATH'} = $TAINT; |
1168 | local $SIG{'PIPE'} = 'IGNORE'; |
1169 | eval { |
1170 | my $pid = open my $pipe, '|-'; |
1171 | if (!defined $pid) { |
1172 | die "open failed: $!"; |
1173 | } |
1174 | if (!$pid) { |
1175 | kill 'KILL', $$; # child suicide |
1176 | } |
1177 | close $pipe; |
1178 | }; |
1179 | test $@ !~ /Insecure \$ENV/, 'fork triggers %ENV check'; |
1180 | test $@ eq '', 'pipe/fork/open/close failed'; |
1181 | eval { |
1182 | open my $pipe, "|$Invoke_Perl -e 1"; |
1183 | close $pipe; |
1184 | }; |
1185 | test $@ =~ /Insecure \$ENV/, 'popen neglects %ENV check'; |
1186 | } |
1187 | } |