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'; |
12 | @INC = '../lib' if -d '../lib'; |
13 | } |
14 | |
15 | use strict; |
16 | use Config; |
17 | |
18 | my $Is_VMS = $^O eq 'VMS'; |
68dc0745 |
19 | my $Is_MSWin32 = $^O eq 'MSWin32'; |
39e571d4 |
20 | my $Is_Dos = $^O eq 'dos'; |
68dc0745 |
21 | my $Invoke_Perl = $Is_VMS ? 'MCR Sys$Disk:[]Perl.' : |
22 | $Is_MSWin32 ? '.\perl' : './perl'; |
c90c0ff4 |
23 | my @MoreEnv = qw/IFS CDPATH ENV BASH_ENV/; |
7bac28a0 |
24 | |
1e422769 |
25 | if ($Is_VMS) { |
7bac28a0 |
26 | my (%old, $x); |
27 | for $x ('DCL$PATH', @MoreEnv) { |
28 | ($old{$x}) = $ENV{$x} =~ /^(.*)$/ if exists $ENV{$x}; |
29 | } |
1e422769 |
30 | eval <<EndOfCleanup; |
31 | END { |
32 | \$ENV{PATH} = ''; |
33 | warn "# Note: logical name 'PATH' may have been deleted\n"; |
7bac28a0 |
34 | @ENV{keys %old} = values %old; |
1e422769 |
35 | } |
36 | EndOfCleanup |
37 | } |
38 | |
39 | # Sources of taint: |
40 | # The empty tainted value, for tainting strings |
41 | my $TAINT = substr($^X, 0, 0); |
42 | # A tainted zero, useful for tainting numbers |
43 | my $TAINT0 = 0 + $TAINT; |
44 | |
45 | # This taints each argument passed. All must be lvalues. |
46 | # Side effect: It also stringifies them. :-( |
47 | sub taint_these (@) { |
48 | for (@_) { $_ .= $TAINT } |
49 | } |
50 | |
51 | # How to identify taint when you see it |
52 | sub any_tainted (@) { |
53 | not eval { join("",@_), kill 0; 1 }; |
54 | } |
55 | sub tainted ($) { |
56 | any_tainted @_; |
57 | } |
58 | sub all_tainted (@) { |
59 | for (@_) { return 0 unless tainted $_ } |
60 | 1; |
61 | } |
62 | |
63 | sub test ($$;$) { |
64 | my($serial, $boolean, $diag) = @_; |
65 | if ($boolean) { |
66 | print "ok $serial\n"; |
67 | } else { |
68 | print "not ok $serial\n"; |
69 | for (split m/^/m, $diag) { |
70 | print "# $_"; |
71 | } |
9607fc9c |
72 | print "\n" unless |
1e422769 |
73 | $diag eq '' |
74 | or substr($diag, -1) eq "\n"; |
75 | } |
76 | } |
77 | |
78 | # We need an external program to call. |
5aabfad6 |
79 | my $ECHO = ($Is_MSWin32 ? ".\\echo$$" : "./echo$$"); |
1e422769 |
80 | END { unlink $ECHO } |
81 | open PROG, "> $ECHO" or die "Can't create $ECHO: $!"; |
82 | print PROG 'print "@ARGV\n"', "\n"; |
83 | close PROG; |
84 | my $echo = "$Invoke_Perl $ECHO"; |
85 | |
48c036b1 |
86 | print "1..145\n"; |
1e422769 |
87 | |
88 | # First, let's make sure that Perl is checking the dangerous |
89 | # environment variables. Maybe they aren't set yet, so we'll |
90 | # taint them ourselves. |
91 | { |
92 | $ENV{'DCL$PATH'} = '' if $Is_VMS; |
93 | |
7bac28a0 |
94 | $ENV{PATH} = ''; |
c90c0ff4 |
95 | delete @ENV{@MoreEnv}; |
7bac28a0 |
96 | $ENV{TERM} = 'dumb'; |
97 | |
98 | test 1, eval { `$echo 1` } eq "1\n"; |
99 | |
39e571d4 |
100 | if ($Is_MSWin32 || $Is_VMS || $Is_Dos) { |
7bac28a0 |
101 | print "# Environment tainting tests skipped\n"; |
c90c0ff4 |
102 | for (2..5) { print "ok $_\n" } |
5aabfad6 |
103 | } |
104 | else { |
7bac28a0 |
105 | my @vars = ('PATH', @MoreEnv); |
106 | while (my $v = $vars[0]) { |
107 | local $ENV{$v} = $TAINT; |
108 | last if eval { `$echo 1` }; |
109 | last unless $@ =~ /^Insecure \$ENV{$v}/; |
110 | shift @vars; |
111 | } |
112 | test 2, !@vars, "\$$vars[0]"; |
c90c0ff4 |
113 | |
114 | # tainted $TERM is unsafe only if it contains metachars |
115 | local $ENV{TERM}; |
116 | $ENV{TERM} = 'e=mc2'; |
117 | test 3, eval { `$echo 1` } eq "1\n"; |
118 | $ENV{TERM} = 'e=mc2' . $TAINT; |
119 | test 4, eval { `$echo 1` } eq ''; |
120 | test 5, $@ =~ /^Insecure \$ENV{TERM}/, $@; |
5aabfad6 |
121 | } |
7bac28a0 |
122 | |
9607fc9c |
123 | my $tmp; |
48c036b1 |
124 | if ($^O eq 'os2' || $^O eq 'amigaos' || $Is_MSWin32 || $Is_Dos) { |
125 | print "# all directories are writeable\n"; |
126 | } |
127 | else { |
9607fc9c |
128 | $tmp = (grep { defined and -d and (stat _)[2] & 2 } |
129 | qw(/tmp /var/tmp /usr/tmp /sys$scratch), |
130 | @ENV{qw(TMP TEMP)})[0] |
131 | or print "# can't find world-writeable directory to test PATH\n"; |
132 | } |
133 | |
385588b3 |
134 | if ($tmp) { |
7bac28a0 |
135 | local $ENV{PATH} = $tmp; |
c90c0ff4 |
136 | test 6, eval { `$echo 1` } eq ''; |
137 | test 7, $@ =~ /^Insecure directory in \$ENV{PATH}/, $@; |
1e422769 |
138 | } |
139 | else { |
fac76ed7 |
140 | for (6..7) { print "ok $_ # Skipped: all directories are writeable\n" } |
1e422769 |
141 | } |
142 | |
1e422769 |
143 | if ($Is_VMS) { |
144 | $ENV{'DCL$PATH'} = $TAINT; |
c90c0ff4 |
145 | test 8, eval { `$echo 1` } eq ''; |
146 | test 9, $@ =~ /^Insecure \$ENV{DCL\$PATH}/, $@; |
9607fc9c |
147 | if ($tmp) { |
148 | $ENV{'DCL$PATH'} = $tmp; |
c90c0ff4 |
149 | test 10, eval { `$echo 1` } eq ''; |
150 | test 11, $@ =~ /^Insecure directory in \$ENV{DCL\$PATH}/, $@; |
9607fc9c |
151 | } |
152 | else { |
fac76ed7 |
153 | for (10..11) { print "ok $_ # Skipped: can't find world-writeable directory to test DCL\$PATH\n" } |
9607fc9c |
154 | } |
1e422769 |
155 | $ENV{'DCL$PATH'} = ''; |
156 | } |
157 | else { |
fac76ed7 |
158 | for (8..11) { print "ok $_ # Skipped: This is not VMS\n"; } |
1e422769 |
159 | } |
160 | } |
161 | |
162 | # Let's see that we can taint and untaint as needed. |
163 | { |
164 | my $foo = $TAINT; |
c90c0ff4 |
165 | test 12, tainted $foo; |
9607fc9c |
166 | |
167 | # That was a sanity check. If it failed, stop the insanity! |
168 | die "Taint checks don't seem to be enabled" unless tainted $foo; |
1e422769 |
169 | |
170 | $foo = "foo"; |
c90c0ff4 |
171 | test 13, not tainted $foo; |
1e422769 |
172 | |
173 | taint_these($foo); |
c90c0ff4 |
174 | test 14, tainted $foo; |
1e422769 |
175 | |
176 | my @list = 1..10; |
c90c0ff4 |
177 | test 15, not any_tainted @list; |
1e422769 |
178 | taint_these @list[1,3,5,7,9]; |
c90c0ff4 |
179 | test 16, any_tainted @list; |
180 | test 17, all_tainted @list[1,3,5,7,9]; |
181 | test 18, not any_tainted @list[0,2,4,6,8]; |
1e422769 |
182 | |
183 | ($foo) = $foo =~ /(.+)/; |
c90c0ff4 |
184 | test 19, not tainted $foo; |
1e422769 |
185 | |
186 | $foo = $1 if ('bar' . $TAINT) =~ /(.+)/; |
c90c0ff4 |
187 | test 20, not tainted $foo; |
188 | test 21, $foo eq 'bar'; |
1e422769 |
189 | |
48c036b1 |
190 | $foo = $1 if ('bar' . $TAINT) =~ /(.+)/t; |
191 | test 22, tainted $foo; |
192 | test 23, $foo eq 'bar'; |
193 | |
1e422769 |
194 | my $pi = 4 * atan2(1,1) + $TAINT0; |
48c036b1 |
195 | test 24, tainted $pi; |
1e422769 |
196 | |
197 | ($pi) = $pi =~ /(\d+\.\d+)/; |
48c036b1 |
198 | test 25, not tainted $pi; |
199 | test 26, sprintf("%.5f", $pi) eq '3.14159'; |
1e422769 |
200 | } |
201 | |
202 | # How about command-line arguments? The problem is that we don't |
203 | # always get some, so we'll run another process with some. |
204 | { |
205 | my $arg = "./arg$$"; |
206 | open PROG, "> $arg" or die "Can't create $arg: $!"; |
207 | print PROG q{ |
208 | eval { join('', @ARGV), kill 0 }; |
209 | exit 0 if $@ =~ /^Insecure dependency/; |
210 | print "# Oops: \$@ was [$@]\n"; |
211 | exit 1; |
212 | }; |
213 | close PROG; |
214 | print `$Invoke_Perl "-T" $arg and some suspect arguments`; |
48c036b1 |
215 | test 27, !$?, "Exited with status $?"; |
1e422769 |
216 | unlink $arg; |
217 | } |
218 | |
219 | # Reading from a file should be tainted |
220 | { |
9607fc9c |
221 | my $file = './TEST'; |
48c036b1 |
222 | test 28, open(FILE, $file), "Couldn't open '$file': $!"; |
1e422769 |
223 | |
224 | my $block; |
225 | sysread(FILE, $block, 100); |
9607fc9c |
226 | my $line = <FILE>; |
1e422769 |
227 | close FILE; |
48c036b1 |
228 | test 29, tainted $block; |
229 | test 30, tainted $line; |
1e422769 |
230 | } |
231 | |
c90c0ff4 |
232 | # Globs should be forbidden, except under VMS, |
233 | # which doesn't spawn an external program. |
234 | if ($Is_VMS) { |
235 | for (29..30) { print "ok $_\n"; } |
236 | } |
237 | else { |
7bac28a0 |
238 | my @globs = eval { <*> }; |
48c036b1 |
239 | test 31, @globs == 0 && $@ =~ /^Insecure dependency/; |
1e422769 |
240 | |
7bac28a0 |
241 | @globs = eval { glob '*' }; |
48c036b1 |
242 | test 32, @globs == 0 && $@ =~ /^Insecure dependency/; |
1e422769 |
243 | } |
244 | |
245 | # Output of commands should be tainted |
246 | { |
247 | my $foo = `$echo abc`; |
48c036b1 |
248 | test 33, tainted $foo; |
1e422769 |
249 | } |
250 | |
251 | # Certain system variables should be tainted |
252 | { |
48c036b1 |
253 | test 34, all_tainted $^X, $0; |
1e422769 |
254 | } |
255 | |
256 | # Results of matching should all be untainted |
257 | { |
258 | my $foo = "abcdefghi" . $TAINT; |
48c036b1 |
259 | test 35, tainted $foo; |
1e422769 |
260 | |
261 | $foo =~ /def/; |
48c036b1 |
262 | test 36, not any_tainted $`, $&, $'; |
1e422769 |
263 | |
264 | $foo =~ /(...)(...)(...)/; |
48c036b1 |
265 | test 37, not any_tainted $1, $2, $3, $+; |
1e422769 |
266 | |
267 | my @bar = $foo =~ /(...)(...)(...)/; |
48c036b1 |
268 | test 38, not any_tainted @bar; |
1e422769 |
269 | |
48c036b1 |
270 | test 39, tainted $foo; # $foo should still be tainted! |
271 | test 40, $foo eq "abcdefghi"; |
1e422769 |
272 | } |
273 | |
274 | # Operations which affect files can't use tainted data. |
275 | { |
48c036b1 |
276 | test 41, eval { chmod 0, $TAINT } eq '', 'chmod'; |
277 | test 42, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
278 | |
9607fc9c |
279 | # There is no feature test in $Config{} for truncate, |
280 | # so we allow for the possibility that it's missing. |
48c036b1 |
281 | test 43, eval { truncate 'NoSuChFiLe', $TAINT0 } eq '', 'truncate'; |
282 | test 44, $@ =~ /^(?:Insecure dependency|truncate not implemented)/, $@; |
1e422769 |
283 | |
48c036b1 |
284 | test 45, eval { rename '', $TAINT } eq '', 'rename'; |
c90c0ff4 |
285 | test 46, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
286 | |
48c036b1 |
287 | test 47, eval { unlink $TAINT } eq '', 'unlink'; |
c90c0ff4 |
288 | test 48, $@ =~ /^Insecure dependency/, $@; |
9607fc9c |
289 | |
48c036b1 |
290 | test 49, eval { utime $TAINT } eq '', 'utime'; |
291 | test 50, $@ =~ /^Insecure dependency/, $@; |
292 | |
1e422769 |
293 | if ($Config{d_chown}) { |
48c036b1 |
294 | test 51, eval { chown -1, -1, $TAINT } eq '', 'chown'; |
295 | test 52, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
296 | } |
297 | else { |
48c036b1 |
298 | for (51..52) { print "ok $_ # Skipped: chown() is not available\n" } |
1e422769 |
299 | } |
300 | |
301 | if ($Config{d_link}) { |
48c036b1 |
302 | test 53, eval { link $TAINT, '' } eq '', 'link'; |
303 | test 54, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
304 | } |
305 | else { |
48c036b1 |
306 | for (53..54) { print "ok $_ # Skipped: link() is not available\n" } |
1e422769 |
307 | } |
308 | |
309 | if ($Config{d_symlink}) { |
48c036b1 |
310 | test 55, eval { symlink $TAINT, '' } eq '', 'symlink'; |
311 | test 56, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
312 | } |
313 | else { |
48c036b1 |
314 | for (55..56) { print "ok $_ # Skipped: symlink() is not available\n" } |
1e422769 |
315 | } |
316 | } |
317 | |
318 | # Operations which affect directories can't use tainted data. |
319 | { |
48c036b1 |
320 | test 57, eval { mkdir $TAINT0, $TAINT } eq '', 'mkdir'; |
c90c0ff4 |
321 | test 58, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
322 | |
48c036b1 |
323 | test 59, eval { rmdir $TAINT } eq '', 'rmdir'; |
c90c0ff4 |
324 | test 60, $@ =~ /^Insecure dependency/, $@; |
9607fc9c |
325 | |
48c036b1 |
326 | test 61, eval { chdir $TAINT } eq '', 'chdir'; |
327 | test 62, $@ =~ /^Insecure dependency/, $@; |
328 | |
1e422769 |
329 | if ($Config{d_chroot}) { |
48c036b1 |
330 | test 63, eval { chroot $TAINT } eq '', 'chroot'; |
331 | test 64, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
332 | } |
333 | else { |
48c036b1 |
334 | for (63..64) { print "ok $_ # Skipped: chroot() is not available\n" } |
1e422769 |
335 | } |
336 | } |
337 | |
338 | # Some operations using files can't use tainted data. |
339 | { |
340 | my $foo = "imaginary library" . $TAINT; |
48c036b1 |
341 | test 65, eval { require $foo } eq '', 'require'; |
342 | test 66, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
343 | |
344 | my $filename = "./taintB$$"; # NB: $filename isn't tainted! |
345 | END { unlink $filename if defined $filename } |
346 | $foo = $filename . $TAINT; |
347 | unlink $filename; # in any case |
348 | |
48c036b1 |
349 | test 67, eval { open FOO, $foo } eq '', 'open for read'; |
350 | test 68, $@ eq '', $@; # NB: This should be allowed |
351 | test 69, $! == 2; # File not found |
1e422769 |
352 | |
48c036b1 |
353 | test 70, eval { open FOO, "> $foo" } eq '', 'open for write'; |
354 | test 71, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
355 | } |
356 | |
357 | # Commands to the system can't use tainted data |
358 | { |
359 | my $foo = $TAINT; |
360 | |
361 | if ($^O eq 'amigaos') { |
48c036b1 |
362 | for (72..75) { print "ok $_ # Skipped: open('|') is not available\n" } |
1e422769 |
363 | } |
364 | else { |
48c036b1 |
365 | test 72, eval { open FOO, "| $foo" } eq '', 'popen to'; |
c90c0ff4 |
366 | test 73, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
367 | |
48c036b1 |
368 | test 74, eval { open FOO, "$foo |" } eq '', 'popen from'; |
369 | test 75, $@ =~ /^Insecure dependency/, $@; |
370 | } |
1e422769 |
371 | |
48c036b1 |
372 | test 76, eval { exec $TAINT } eq '', 'exec'; |
c90c0ff4 |
373 | test 77, $@ =~ /^Insecure dependency/, $@; |
9607fc9c |
374 | |
48c036b1 |
375 | test 78, eval { system $TAINT } eq '', 'system'; |
376 | test 79, $@ =~ /^Insecure dependency/, $@; |
377 | |
1e422769 |
378 | $foo = "*"; |
379 | taint_these $foo; |
380 | |
48c036b1 |
381 | test 80, eval { `$echo 1$foo` } eq '', 'backticks'; |
382 | test 81, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
383 | |
384 | if ($Is_VMS) { # wildcard expansion doesn't invoke shell, so is safe |
48c036b1 |
385 | test 82, join('', eval { glob $foo } ) ne '', 'globbing'; |
386 | test 83, $@ eq '', $@; |
1e422769 |
387 | } |
388 | else { |
48c036b1 |
389 | for (82..83) { print "ok $_ # Skipped: this is not VMS\n"; } |
1e422769 |
390 | } |
391 | } |
392 | |
393 | # Operations which affect processes can't use tainted data. |
394 | { |
48c036b1 |
395 | test 84, eval { kill 0, $TAINT } eq '', 'kill'; |
396 | test 85, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
397 | |
398 | if ($Config{d_setpgrp}) { |
48c036b1 |
399 | test 86, eval { setpgrp 0, $TAINT } eq '', 'setpgrp'; |
400 | test 87, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
401 | } |
402 | else { |
48c036b1 |
403 | for (86..87) { print "ok $_ # Skipped: setpgrp() is not available\n" } |
1e422769 |
404 | } |
405 | |
406 | if ($Config{d_setprior}) { |
48c036b1 |
407 | test 88, eval { setpriority 0, $TAINT, $TAINT } eq '', 'setpriority'; |
408 | test 89, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
409 | } |
410 | else { |
48c036b1 |
411 | for (88..89) { print "ok $_ # Skipped: setpriority() is not available\n" } |
1e422769 |
412 | } |
413 | } |
414 | |
415 | # Some miscellaneous operations can't use tainted data. |
416 | { |
417 | if ($Config{d_syscall}) { |
48c036b1 |
418 | test 90, eval { syscall $TAINT } eq '', 'syscall'; |
419 | test 91, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
420 | } |
421 | else { |
48c036b1 |
422 | for (90..91) { print "ok $_ # Skipped: syscall() is not available\n" } |
1e422769 |
423 | } |
424 | |
425 | { |
426 | my $foo = "x" x 979; |
427 | taint_these $foo; |
428 | local *FOO; |
429 | my $temp = "./taintC$$"; |
430 | END { unlink $temp } |
48c036b1 |
431 | test 92, open(FOO, "> $temp"), "Couldn't open $temp for write: $!"; |
1e422769 |
432 | |
48c036b1 |
433 | test 93, eval { ioctl FOO, $TAINT, $foo } eq '', 'ioctl'; |
434 | test 94, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
435 | |
436 | if ($Config{d_fcntl}) { |
48c036b1 |
437 | test 95, eval { fcntl FOO, $TAINT, $foo } eq '', 'fcntl'; |
438 | test 96, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
439 | } |
440 | else { |
48c036b1 |
441 | for (95..96) { print "ok $_ # Skipped: fcntl() is not available\n" } |
1e422769 |
442 | } |
443 | |
444 | close FOO; |
445 | } |
446 | } |
447 | |
9607fc9c |
448 | # Some tests involving references |
1e422769 |
449 | { |
450 | my $foo = 'abc' . $TAINT; |
451 | my $fooref = \$foo; |
48c036b1 |
452 | test 97, not tainted $fooref; |
453 | test 98, tainted $$fooref; |
454 | test 99, tainted $foo; |
1e422769 |
455 | } |
54310121 |
456 | |
457 | # Some tests involving assignment |
458 | { |
459 | my $foo = $TAINT0; |
460 | my $bar = $foo; |
48c036b1 |
461 | test 100, all_tainted $foo, $bar; |
462 | test 101, tainted($foo = $bar); |
463 | test 102, tainted($bar = $bar); |
464 | test 103, tainted($bar += $bar); |
465 | test 104, tainted($bar -= $bar); |
466 | test 105, tainted($bar *= $bar); |
467 | test 106, tainted($bar++); |
468 | test 107, tainted($bar /= $bar); |
469 | test 108, tainted($bar += 0); |
470 | test 109, tainted($bar -= 2); |
471 | test 110, tainted($bar *= -1); |
472 | test 111, tainted($bar /= 1); |
473 | test 112, tainted($bar--); |
474 | test 113, $bar == 0; |
54310121 |
475 | } |
a1f49e72 |
476 | |
477 | # Test assignment and return of lists |
478 | { |
479 | my @foo = ("A", "tainted" . $TAINT, "B"); |
48c036b1 |
480 | test 114, not tainted $foo[0]; |
481 | test 115, tainted $foo[1]; |
482 | test 116, not tainted $foo[2]; |
a1f49e72 |
483 | my @bar = @foo; |
48c036b1 |
484 | test 117, not tainted $bar[0]; |
485 | test 118, tainted $bar[1]; |
486 | test 119, not tainted $bar[2]; |
a1f49e72 |
487 | my @baz = eval { "A", "tainted" . $TAINT, "B" }; |
48c036b1 |
488 | test 120, not tainted $baz[0]; |
489 | test 121, tainted $baz[1]; |
490 | test 122, not tainted $baz[2]; |
a1f49e72 |
491 | my @plugh = eval q[ "A", "tainted" . $TAINT, "B" ]; |
48c036b1 |
492 | test 123, not tainted $plugh[0]; |
493 | test 124, tainted $plugh[1]; |
494 | test 125, not tainted $plugh[2]; |
a1f49e72 |
495 | my $nautilus = sub { "A", "tainted" . $TAINT, "B" }; |
48c036b1 |
496 | test 126, not tainted ((&$nautilus)[0]); |
497 | test 127, tainted ((&$nautilus)[1]); |
498 | test 128, not tainted ((&$nautilus)[2]); |
a1f49e72 |
499 | my @xyzzy = &$nautilus; |
48c036b1 |
500 | test 129, not tainted $xyzzy[0]; |
501 | test 130, tainted $xyzzy[1]; |
502 | test 131, not tainted $xyzzy[2]; |
a1f49e72 |
503 | my $red_october = sub { return "A", "tainted" . $TAINT, "B" }; |
48c036b1 |
504 | test 132, not tainted ((&$red_october)[0]); |
505 | test 133, tainted ((&$red_october)[1]); |
506 | test 134, not tainted ((&$red_october)[2]); |
a1f49e72 |
507 | my @corge = &$red_october; |
48c036b1 |
508 | test 135, not tainted $corge[0]; |
509 | test 136, tainted $corge[1]; |
510 | test 137, not tainted $corge[2]; |
a1f49e72 |
511 | } |
fb73857a |
512 | |
513 | # Test for system/library calls returning string data of dubious origin. |
514 | { |
515 | # No reliable %Config check for getpw* |
516 | if (eval { setpwent(); getpwent(); 1 }) { |
517 | setpwent(); |
518 | my @getpwent = getpwent(); |
519 | die "getpwent: $!\n" unless (@getpwent); |
48c036b1 |
520 | test 138,( not tainted $getpwent[0] |
fb73857a |
521 | and not tainted $getpwent[1] |
522 | and not tainted $getpwent[2] |
523 | and not tainted $getpwent[3] |
524 | and not tainted $getpwent[4] |
525 | and not tainted $getpwent[5] |
526 | and tainted $getpwent[6] # gecos |
527 | and not tainted $getpwent[7] |
528 | and not tainted $getpwent[8]); |
529 | endpwent(); |
530 | } else { |
48c036b1 |
531 | print "ok 138 # Skipped: getpwent() is not available\n"; |
fb73857a |
532 | } |
533 | |
534 | if ($Config{d_readdir}) { # pretty hard to imagine not |
535 | local(*D); |
536 | opendir(D, "op") or die "opendir: $!\n"; |
537 | my $readdir = readdir(D); |
48c036b1 |
538 | test 139, tainted $readdir; |
fb73857a |
539 | closedir(OP); |
540 | } else { |
48c036b1 |
541 | print "ok 139 # Skipped: readdir() is not available\n"; |
fb73857a |
542 | } |
543 | |
544 | if ($Config{d_readlink} && $Config{d_symlink}) { |
545 | my $symlink = "sl$$"; |
546 | unlink($symlink); |
547 | symlink("/something/naughty", $symlink) or die "symlink: $!\n"; |
548 | my $readlink = readlink($symlink); |
48c036b1 |
549 | test 140, tainted $readlink; |
fb73857a |
550 | unlink($symlink); |
551 | } else { |
48c036b1 |
552 | print "ok 140 # Skipped: readlink() or symlink() is not available\n"; |
fb73857a |
553 | } |
554 | } |
555 | |
556 | # test bitwise ops (regression bug) |
557 | { |
558 | my $why = "y"; |
559 | my $j = "x" | $why; |
48c036b1 |
560 | test 141, not tainted $j; |
fb73857a |
561 | $why = $TAINT."y"; |
562 | $j = "x" | $why; |
48c036b1 |
563 | test 142, tainted $j; |
fb73857a |
564 | } |
565 | |
48c036b1 |
566 | # test target of substitution (regression bug) |
567 | { |
568 | my $why = $TAINT."y"; |
569 | $why =~ s/y/z/; |
570 | test 143, tainted $why; |
571 | |
572 | my $z = "[z]"; |
573 | $why =~ s/$z/zee/; |
574 | test 144, tainted $why; |
575 | |
576 | $why =~ s/e/'-'.$$/ge; |
577 | test 145, tainted $why; |
578 | } |