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