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'; |
93430cb4 |
12 | unshift @INC, '../lib' if -d '../lib'; |
1e422769 |
13 | } |
14 | |
15 | use strict; |
16 | use Config; |
17 | |
9d116dd7 |
18 | # We do not want the whole taint.t to fail |
19 | # just because Errno possibly failing. |
20 | eval { require Errno; import Errno }; |
21 | |
3eeba6fb |
22 | BEGIN { |
23 | if ($^O eq 'VMS' && !defined($Config{d_setenv})) { |
24 | $ENV{PATH} = $ENV{PATH}; |
25 | $ENV{TERM} = $ENV{TERM} ne ''? $ENV{TERM} : 'dummy'; |
26 | } |
27 | } |
28 | |
1e422769 |
29 | my $Is_VMS = $^O eq 'VMS'; |
68dc0745 |
30 | my $Is_MSWin32 = $^O eq 'MSWin32'; |
39e571d4 |
31 | my $Is_Dos = $^O eq 'dos'; |
68dc0745 |
32 | my $Invoke_Perl = $Is_VMS ? 'MCR Sys$Disk:[]Perl.' : |
33 | $Is_MSWin32 ? '.\perl' : './perl'; |
c90c0ff4 |
34 | my @MoreEnv = qw/IFS CDPATH ENV BASH_ENV/; |
7bac28a0 |
35 | |
1e422769 |
36 | if ($Is_VMS) { |
7bac28a0 |
37 | my (%old, $x); |
38 | for $x ('DCL$PATH', @MoreEnv) { |
39 | ($old{$x}) = $ENV{$x} =~ /^(.*)$/ if exists $ENV{$x}; |
40 | } |
1e422769 |
41 | eval <<EndOfCleanup; |
42 | END { |
3eeba6fb |
43 | \$ENV{PATH} = '' if $Config{d_setenv}; |
1e422769 |
44 | warn "# Note: logical name 'PATH' may have been deleted\n"; |
562a7b0c |
45 | \@ENV{keys %old} = values %old; |
1e422769 |
46 | } |
47 | EndOfCleanup |
48 | } |
49 | |
50 | # Sources of taint: |
51 | # The empty tainted value, for tainting strings |
52 | my $TAINT = substr($^X, 0, 0); |
53 | # A tainted zero, useful for tainting numbers |
54 | my $TAINT0 = 0 + $TAINT; |
55 | |
56 | # This taints each argument passed. All must be lvalues. |
57 | # Side effect: It also stringifies them. :-( |
58 | sub taint_these (@) { |
59 | for (@_) { $_ .= $TAINT } |
60 | } |
61 | |
62 | # How to identify taint when you see it |
63 | sub any_tainted (@) { |
64 | not eval { join("",@_), kill 0; 1 }; |
65 | } |
66 | sub tainted ($) { |
67 | any_tainted @_; |
68 | } |
69 | sub all_tainted (@) { |
70 | for (@_) { return 0 unless tainted $_ } |
71 | 1; |
72 | } |
73 | |
74 | sub test ($$;$) { |
75 | my($serial, $boolean, $diag) = @_; |
76 | if ($boolean) { |
77 | print "ok $serial\n"; |
78 | } else { |
79 | print "not ok $serial\n"; |
80 | for (split m/^/m, $diag) { |
81 | print "# $_"; |
82 | } |
9607fc9c |
83 | print "\n" unless |
1e422769 |
84 | $diag eq '' |
85 | or substr($diag, -1) eq "\n"; |
86 | } |
87 | } |
88 | |
89 | # We need an external program to call. |
5aabfad6 |
90 | my $ECHO = ($Is_MSWin32 ? ".\\echo$$" : "./echo$$"); |
1e422769 |
91 | END { unlink $ECHO } |
92 | open PROG, "> $ECHO" or die "Can't create $ECHO: $!"; |
93 | print PROG 'print "@ARGV\n"', "\n"; |
94 | close PROG; |
95 | my $echo = "$Invoke_Perl $ECHO"; |
96 | |
b3eb6a9b |
97 | print "1..149\n"; |
1e422769 |
98 | |
99 | # First, let's make sure that Perl is checking the dangerous |
100 | # environment variables. Maybe they aren't set yet, so we'll |
101 | # taint them ourselves. |
102 | { |
103 | $ENV{'DCL$PATH'} = '' if $Is_VMS; |
104 | |
7bac28a0 |
105 | $ENV{PATH} = ''; |
c90c0ff4 |
106 | delete @ENV{@MoreEnv}; |
7bac28a0 |
107 | $ENV{TERM} = 'dumb'; |
108 | |
109 | test 1, eval { `$echo 1` } eq "1\n"; |
110 | |
39e571d4 |
111 | if ($Is_MSWin32 || $Is_VMS || $Is_Dos) { |
7bac28a0 |
112 | print "# Environment tainting tests skipped\n"; |
c90c0ff4 |
113 | for (2..5) { print "ok $_\n" } |
5aabfad6 |
114 | } |
115 | else { |
7bac28a0 |
116 | my @vars = ('PATH', @MoreEnv); |
117 | while (my $v = $vars[0]) { |
118 | local $ENV{$v} = $TAINT; |
119 | last if eval { `$echo 1` }; |
120 | last unless $@ =~ /^Insecure \$ENV{$v}/; |
121 | shift @vars; |
122 | } |
123 | test 2, !@vars, "\$$vars[0]"; |
c90c0ff4 |
124 | |
125 | # tainted $TERM is unsafe only if it contains metachars |
126 | local $ENV{TERM}; |
127 | $ENV{TERM} = 'e=mc2'; |
128 | test 3, eval { `$echo 1` } eq "1\n"; |
129 | $ENV{TERM} = 'e=mc2' . $TAINT; |
130 | test 4, eval { `$echo 1` } eq ''; |
131 | test 5, $@ =~ /^Insecure \$ENV{TERM}/, $@; |
5aabfad6 |
132 | } |
7bac28a0 |
133 | |
9607fc9c |
134 | my $tmp; |
48c036b1 |
135 | if ($^O eq 'os2' || $^O eq 'amigaos' || $Is_MSWin32 || $Is_Dos) { |
136 | print "# all directories are writeable\n"; |
137 | } |
138 | else { |
9607fc9c |
139 | $tmp = (grep { defined and -d and (stat _)[2] & 2 } |
140 | qw(/tmp /var/tmp /usr/tmp /sys$scratch), |
141 | @ENV{qw(TMP TEMP)})[0] |
142 | or print "# can't find world-writeable directory to test PATH\n"; |
143 | } |
144 | |
385588b3 |
145 | if ($tmp) { |
7bac28a0 |
146 | local $ENV{PATH} = $tmp; |
c90c0ff4 |
147 | test 6, eval { `$echo 1` } eq ''; |
148 | test 7, $@ =~ /^Insecure directory in \$ENV{PATH}/, $@; |
1e422769 |
149 | } |
150 | else { |
fac76ed7 |
151 | for (6..7) { print "ok $_ # Skipped: all directories are writeable\n" } |
1e422769 |
152 | } |
153 | |
1e422769 |
154 | if ($Is_VMS) { |
155 | $ENV{'DCL$PATH'} = $TAINT; |
c90c0ff4 |
156 | test 8, eval { `$echo 1` } eq ''; |
157 | test 9, $@ =~ /^Insecure \$ENV{DCL\$PATH}/, $@; |
9607fc9c |
158 | if ($tmp) { |
159 | $ENV{'DCL$PATH'} = $tmp; |
c90c0ff4 |
160 | test 10, eval { `$echo 1` } eq ''; |
161 | test 11, $@ =~ /^Insecure directory in \$ENV{DCL\$PATH}/, $@; |
9607fc9c |
162 | } |
163 | else { |
fac76ed7 |
164 | for (10..11) { print "ok $_ # Skipped: can't find world-writeable directory to test DCL\$PATH\n" } |
9607fc9c |
165 | } |
1e422769 |
166 | $ENV{'DCL$PATH'} = ''; |
167 | } |
168 | else { |
fac76ed7 |
169 | for (8..11) { print "ok $_ # Skipped: This is not VMS\n"; } |
1e422769 |
170 | } |
171 | } |
172 | |
173 | # Let's see that we can taint and untaint as needed. |
174 | { |
175 | my $foo = $TAINT; |
c90c0ff4 |
176 | test 12, tainted $foo; |
9607fc9c |
177 | |
178 | # That was a sanity check. If it failed, stop the insanity! |
179 | die "Taint checks don't seem to be enabled" unless tainted $foo; |
1e422769 |
180 | |
181 | $foo = "foo"; |
c90c0ff4 |
182 | test 13, not tainted $foo; |
1e422769 |
183 | |
184 | taint_these($foo); |
c90c0ff4 |
185 | test 14, tainted $foo; |
1e422769 |
186 | |
187 | my @list = 1..10; |
c90c0ff4 |
188 | test 15, not any_tainted @list; |
1e422769 |
189 | taint_these @list[1,3,5,7,9]; |
c90c0ff4 |
190 | test 16, any_tainted @list; |
191 | test 17, all_tainted @list[1,3,5,7,9]; |
192 | test 18, not any_tainted @list[0,2,4,6,8]; |
1e422769 |
193 | |
194 | ($foo) = $foo =~ /(.+)/; |
c90c0ff4 |
195 | test 19, not tainted $foo; |
1e422769 |
196 | |
197 | $foo = $1 if ('bar' . $TAINT) =~ /(.+)/; |
c90c0ff4 |
198 | test 20, not tainted $foo; |
199 | test 21, $foo eq 'bar'; |
1e422769 |
200 | |
b3eb6a9b |
201 | { |
202 | use re 'taint'; |
203 | |
204 | ($foo) = ('bar' . $TAINT) =~ /(.+)/; |
205 | test 22, tainted $foo; |
206 | test 23, $foo eq 'bar'; |
207 | |
208 | $foo = $1 if ('bar' . $TAINT) =~ /(.+)/; |
209 | test 24, tainted $foo; |
210 | test 25, $foo eq 'bar'; |
211 | } |
212 | |
213 | $foo = $1 if 'bar' =~ /(.+)$TAINT/; |
214 | test 26, tainted $foo; |
215 | test 27, $foo eq 'bar'; |
48c036b1 |
216 | |
1e422769 |
217 | my $pi = 4 * atan2(1,1) + $TAINT0; |
b3eb6a9b |
218 | test 28, tainted $pi; |
1e422769 |
219 | |
220 | ($pi) = $pi =~ /(\d+\.\d+)/; |
b3eb6a9b |
221 | test 29, not tainted $pi; |
222 | test 30, sprintf("%.5f", $pi) eq '3.14159'; |
1e422769 |
223 | } |
224 | |
225 | # How about command-line arguments? The problem is that we don't |
226 | # always get some, so we'll run another process with some. |
227 | { |
228 | my $arg = "./arg$$"; |
229 | open PROG, "> $arg" or die "Can't create $arg: $!"; |
230 | print PROG q{ |
231 | eval { join('', @ARGV), kill 0 }; |
232 | exit 0 if $@ =~ /^Insecure dependency/; |
233 | print "# Oops: \$@ was [$@]\n"; |
234 | exit 1; |
235 | }; |
236 | close PROG; |
237 | print `$Invoke_Perl "-T" $arg and some suspect arguments`; |
b3eb6a9b |
238 | test 31, !$?, "Exited with status $?"; |
1e422769 |
239 | unlink $arg; |
240 | } |
241 | |
242 | # Reading from a file should be tainted |
243 | { |
9607fc9c |
244 | my $file = './TEST'; |
b3eb6a9b |
245 | test 32, open(FILE, $file), "Couldn't open '$file': $!"; |
1e422769 |
246 | |
247 | my $block; |
248 | sysread(FILE, $block, 100); |
9607fc9c |
249 | my $line = <FILE>; |
1e422769 |
250 | close FILE; |
b3eb6a9b |
251 | test 33, tainted $block; |
252 | test 34, tainted $line; |
1e422769 |
253 | } |
254 | |
c90c0ff4 |
255 | # Globs should be forbidden, except under VMS, |
256 | # which doesn't spawn an external program. |
257 | if ($Is_VMS) { |
b3eb6a9b |
258 | for (35..36) { print "ok $_\n"; } |
c90c0ff4 |
259 | } |
260 | else { |
7bac28a0 |
261 | my @globs = eval { <*> }; |
b3eb6a9b |
262 | test 35, @globs == 0 && $@ =~ /^Insecure dependency/; |
1e422769 |
263 | |
7bac28a0 |
264 | @globs = eval { glob '*' }; |
b3eb6a9b |
265 | test 36, @globs == 0 && $@ =~ /^Insecure dependency/; |
1e422769 |
266 | } |
267 | |
268 | # Output of commands should be tainted |
269 | { |
270 | my $foo = `$echo abc`; |
b3eb6a9b |
271 | test 37, tainted $foo; |
1e422769 |
272 | } |
273 | |
274 | # Certain system variables should be tainted |
275 | { |
b3eb6a9b |
276 | test 38, all_tainted $^X, $0; |
1e422769 |
277 | } |
278 | |
279 | # Results of matching should all be untainted |
280 | { |
281 | my $foo = "abcdefghi" . $TAINT; |
b3eb6a9b |
282 | test 39, tainted $foo; |
1e422769 |
283 | |
284 | $foo =~ /def/; |
b3eb6a9b |
285 | test 40, not any_tainted $`, $&, $'; |
1e422769 |
286 | |
287 | $foo =~ /(...)(...)(...)/; |
b3eb6a9b |
288 | test 41, not any_tainted $1, $2, $3, $+; |
1e422769 |
289 | |
290 | my @bar = $foo =~ /(...)(...)(...)/; |
b3eb6a9b |
291 | test 42, not any_tainted @bar; |
1e422769 |
292 | |
b3eb6a9b |
293 | test 43, tainted $foo; # $foo should still be tainted! |
294 | test 44, $foo eq "abcdefghi"; |
1e422769 |
295 | } |
296 | |
297 | # Operations which affect files can't use tainted data. |
298 | { |
b3eb6a9b |
299 | test 45, eval { chmod 0, $TAINT } eq '', 'chmod'; |
300 | test 46, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
301 | |
9607fc9c |
302 | # There is no feature test in $Config{} for truncate, |
303 | # so we allow for the possibility that it's missing. |
b3eb6a9b |
304 | test 47, eval { truncate 'NoSuChFiLe', $TAINT0 } eq '', 'truncate'; |
305 | test 48, $@ =~ /^(?:Insecure dependency|truncate not implemented)/, $@; |
1e422769 |
306 | |
b3eb6a9b |
307 | test 49, eval { rename '', $TAINT } eq '', 'rename'; |
308 | test 50, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
309 | |
b3eb6a9b |
310 | test 51, eval { unlink $TAINT } eq '', 'unlink'; |
311 | test 52, $@ =~ /^Insecure dependency/, $@; |
9607fc9c |
312 | |
b3eb6a9b |
313 | test 53, eval { utime $TAINT } eq '', 'utime'; |
314 | test 54, $@ =~ /^Insecure dependency/, $@; |
48c036b1 |
315 | |
1e422769 |
316 | if ($Config{d_chown}) { |
b3eb6a9b |
317 | test 55, eval { chown -1, -1, $TAINT } eq '', 'chown'; |
318 | test 56, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
319 | } |
320 | else { |
b3eb6a9b |
321 | for (55..56) { print "ok $_ # Skipped: chown() is not available\n" } |
1e422769 |
322 | } |
323 | |
324 | if ($Config{d_link}) { |
b3eb6a9b |
325 | test 57, eval { link $TAINT, '' } eq '', 'link'; |
326 | test 58, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
327 | } |
328 | else { |
b3eb6a9b |
329 | for (57..58) { print "ok $_ # Skipped: link() is not available\n" } |
1e422769 |
330 | } |
331 | |
332 | if ($Config{d_symlink}) { |
b3eb6a9b |
333 | test 59, eval { symlink $TAINT, '' } eq '', 'symlink'; |
334 | test 60, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
335 | } |
336 | else { |
b3eb6a9b |
337 | for (59..60) { print "ok $_ # Skipped: symlink() is not available\n" } |
1e422769 |
338 | } |
339 | } |
340 | |
341 | # Operations which affect directories can't use tainted data. |
342 | { |
b3eb6a9b |
343 | test 61, eval { mkdir $TAINT0, $TAINT } eq '', 'mkdir'; |
344 | test 62, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
345 | |
b3eb6a9b |
346 | test 63, eval { rmdir $TAINT } eq '', 'rmdir'; |
347 | test 64, $@ =~ /^Insecure dependency/, $@; |
9607fc9c |
348 | |
b3eb6a9b |
349 | test 65, eval { chdir $TAINT } eq '', 'chdir'; |
350 | test 66, $@ =~ /^Insecure dependency/, $@; |
48c036b1 |
351 | |
1e422769 |
352 | if ($Config{d_chroot}) { |
b3eb6a9b |
353 | test 67, eval { chroot $TAINT } eq '', 'chroot'; |
354 | test 68, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
355 | } |
356 | else { |
b3eb6a9b |
357 | for (67..68) { print "ok $_ # Skipped: chroot() is not available\n" } |
1e422769 |
358 | } |
359 | } |
360 | |
361 | # Some operations using files can't use tainted data. |
362 | { |
363 | my $foo = "imaginary library" . $TAINT; |
b3eb6a9b |
364 | test 69, eval { require $foo } eq '', 'require'; |
365 | test 70, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
366 | |
367 | my $filename = "./taintB$$"; # NB: $filename isn't tainted! |
368 | END { unlink $filename if defined $filename } |
369 | $foo = $filename . $TAINT; |
370 | unlink $filename; # in any case |
371 | |
b3eb6a9b |
372 | test 71, eval { open FOO, $foo } eq '', 'open for read'; |
373 | test 72, $@ eq '', $@; # NB: This should be allowed |
9d116dd7 |
374 | |
375 | # Try first new style but allow also old style. |
61ae2fbf |
376 | test 73, $!{ENOENT} || |
377 | $! == 2 || # File not found |
378 | ($Is_Dos && $! == 22) || |
379 | ($^O eq 'mint' && $! == 33); |
1e422769 |
380 | |
b3eb6a9b |
381 | test 74, eval { open FOO, "> $foo" } eq '', 'open for write'; |
382 | test 75, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
383 | } |
384 | |
385 | # Commands to the system can't use tainted data |
386 | { |
387 | my $foo = $TAINT; |
388 | |
389 | if ($^O eq 'amigaos') { |
b3eb6a9b |
390 | for (76..79) { print "ok $_ # Skipped: open('|') is not available\n" } |
1e422769 |
391 | } |
392 | else { |
06eaf0bc |
393 | test 76, eval { open FOO, "| x$foo" } eq '', 'popen to'; |
b3eb6a9b |
394 | test 77, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
395 | |
06eaf0bc |
396 | test 78, eval { open FOO, "x$foo |" } eq '', 'popen from'; |
b3eb6a9b |
397 | test 79, $@ =~ /^Insecure dependency/, $@; |
48c036b1 |
398 | } |
1e422769 |
399 | |
b3eb6a9b |
400 | test 80, eval { exec $TAINT } eq '', 'exec'; |
401 | test 81, $@ =~ /^Insecure dependency/, $@; |
9607fc9c |
402 | |
b3eb6a9b |
403 | test 82, eval { system $TAINT } eq '', 'system'; |
404 | test 83, $@ =~ /^Insecure dependency/, $@; |
48c036b1 |
405 | |
1e422769 |
406 | $foo = "*"; |
407 | taint_these $foo; |
408 | |
b3eb6a9b |
409 | test 84, eval { `$echo 1$foo` } eq '', 'backticks'; |
410 | test 85, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
411 | |
412 | if ($Is_VMS) { # wildcard expansion doesn't invoke shell, so is safe |
b3eb6a9b |
413 | test 86, join('', eval { glob $foo } ) ne '', 'globbing'; |
414 | test 87, $@ eq '', $@; |
1e422769 |
415 | } |
416 | else { |
b3eb6a9b |
417 | for (86..87) { print "ok $_ # Skipped: this is not VMS\n"; } |
1e422769 |
418 | } |
419 | } |
420 | |
421 | # Operations which affect processes can't use tainted data. |
422 | { |
b3eb6a9b |
423 | test 88, eval { kill 0, $TAINT } eq '', 'kill'; |
424 | test 89, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
425 | |
426 | if ($Config{d_setpgrp}) { |
b3eb6a9b |
427 | test 90, eval { setpgrp 0, $TAINT } eq '', 'setpgrp'; |
428 | test 91, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
429 | } |
430 | else { |
b3eb6a9b |
431 | for (90..91) { print "ok $_ # Skipped: setpgrp() is not available\n" } |
1e422769 |
432 | } |
433 | |
434 | if ($Config{d_setprior}) { |
b3eb6a9b |
435 | test 92, eval { setpriority 0, $TAINT, $TAINT } eq '', 'setpriority'; |
436 | test 93, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
437 | } |
438 | else { |
b3eb6a9b |
439 | for (92..93) { print "ok $_ # Skipped: setpriority() is not available\n" } |
1e422769 |
440 | } |
441 | } |
442 | |
443 | # Some miscellaneous operations can't use tainted data. |
444 | { |
445 | if ($Config{d_syscall}) { |
b3eb6a9b |
446 | test 94, eval { syscall $TAINT } eq '', 'syscall'; |
447 | test 95, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
448 | } |
449 | else { |
b3eb6a9b |
450 | for (94..95) { print "ok $_ # Skipped: syscall() is not available\n" } |
1e422769 |
451 | } |
452 | |
453 | { |
454 | my $foo = "x" x 979; |
455 | taint_these $foo; |
456 | local *FOO; |
457 | my $temp = "./taintC$$"; |
458 | END { unlink $temp } |
b3eb6a9b |
459 | test 96, open(FOO, "> $temp"), "Couldn't open $temp for write: $!"; |
1e422769 |
460 | |
b3eb6a9b |
461 | test 97, eval { ioctl FOO, $TAINT, $foo } eq '', 'ioctl'; |
462 | test 98, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
463 | |
464 | if ($Config{d_fcntl}) { |
b3eb6a9b |
465 | test 99, eval { fcntl FOO, $TAINT, $foo } eq '', 'fcntl'; |
466 | test 100, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
467 | } |
468 | else { |
b3eb6a9b |
469 | for (99..100) { print "ok $_ # Skipped: fcntl() is not available\n" } |
1e422769 |
470 | } |
471 | |
472 | close FOO; |
473 | } |
474 | } |
475 | |
9607fc9c |
476 | # Some tests involving references |
1e422769 |
477 | { |
478 | my $foo = 'abc' . $TAINT; |
479 | my $fooref = \$foo; |
b3eb6a9b |
480 | test 101, not tainted $fooref; |
481 | test 102, tainted $$fooref; |
482 | test 103, tainted $foo; |
1e422769 |
483 | } |
54310121 |
484 | |
485 | # Some tests involving assignment |
486 | { |
487 | my $foo = $TAINT0; |
488 | my $bar = $foo; |
b3eb6a9b |
489 | test 104, all_tainted $foo, $bar; |
490 | test 105, tainted($foo = $bar); |
491 | test 106, tainted($bar = $bar); |
492 | test 107, tainted($bar += $bar); |
493 | test 108, tainted($bar -= $bar); |
494 | test 109, tainted($bar *= $bar); |
495 | test 110, tainted($bar++); |
496 | test 111, tainted($bar /= $bar); |
497 | test 112, tainted($bar += 0); |
498 | test 113, tainted($bar -= 2); |
499 | test 114, tainted($bar *= -1); |
500 | test 115, tainted($bar /= 1); |
501 | test 116, tainted($bar--); |
502 | test 117, $bar == 0; |
54310121 |
503 | } |
a1f49e72 |
504 | |
505 | # Test assignment and return of lists |
506 | { |
507 | my @foo = ("A", "tainted" . $TAINT, "B"); |
b3eb6a9b |
508 | test 118, not tainted $foo[0]; |
509 | test 119, tainted $foo[1]; |
510 | test 120, not tainted $foo[2]; |
a1f49e72 |
511 | my @bar = @foo; |
b3eb6a9b |
512 | test 121, not tainted $bar[0]; |
513 | test 122, tainted $bar[1]; |
514 | test 123, not tainted $bar[2]; |
a1f49e72 |
515 | my @baz = eval { "A", "tainted" . $TAINT, "B" }; |
b3eb6a9b |
516 | test 124, not tainted $baz[0]; |
517 | test 125, tainted $baz[1]; |
518 | test 126, not tainted $baz[2]; |
a1f49e72 |
519 | my @plugh = eval q[ "A", "tainted" . $TAINT, "B" ]; |
b3eb6a9b |
520 | test 127, not tainted $plugh[0]; |
521 | test 128, tainted $plugh[1]; |
522 | test 129, not tainted $plugh[2]; |
a1f49e72 |
523 | my $nautilus = sub { "A", "tainted" . $TAINT, "B" }; |
b3eb6a9b |
524 | test 130, not tainted ((&$nautilus)[0]); |
525 | test 131, tainted ((&$nautilus)[1]); |
526 | test 132, not tainted ((&$nautilus)[2]); |
a1f49e72 |
527 | my @xyzzy = &$nautilus; |
b3eb6a9b |
528 | test 133, not tainted $xyzzy[0]; |
529 | test 134, tainted $xyzzy[1]; |
530 | test 135, not tainted $xyzzy[2]; |
a1f49e72 |
531 | my $red_october = sub { return "A", "tainted" . $TAINT, "B" }; |
b3eb6a9b |
532 | test 136, not tainted ((&$red_october)[0]); |
533 | test 137, tainted ((&$red_october)[1]); |
534 | test 138, not tainted ((&$red_october)[2]); |
a1f49e72 |
535 | my @corge = &$red_october; |
b3eb6a9b |
536 | test 139, not tainted $corge[0]; |
537 | test 140, tainted $corge[1]; |
538 | test 141, not tainted $corge[2]; |
a1f49e72 |
539 | } |
fb73857a |
540 | |
541 | # Test for system/library calls returning string data of dubious origin. |
542 | { |
543 | # No reliable %Config check for getpw* |
544 | if (eval { setpwent(); getpwent(); 1 }) { |
545 | setpwent(); |
546 | my @getpwent = getpwent(); |
547 | die "getpwent: $!\n" unless (@getpwent); |
b3eb6a9b |
548 | test 142,( not tainted $getpwent[0] |
fb73857a |
549 | and not tainted $getpwent[1] |
550 | and not tainted $getpwent[2] |
551 | and not tainted $getpwent[3] |
552 | and not tainted $getpwent[4] |
553 | and not tainted $getpwent[5] |
554 | and tainted $getpwent[6] # gecos |
555 | and not tainted $getpwent[7] |
556 | and not tainted $getpwent[8]); |
557 | endpwent(); |
558 | } else { |
b3eb6a9b |
559 | for (142) { print "ok $_ # Skipped: getpwent() is not available\n" } |
fb73857a |
560 | } |
561 | |
562 | if ($Config{d_readdir}) { # pretty hard to imagine not |
563 | local(*D); |
564 | opendir(D, "op") or die "opendir: $!\n"; |
565 | my $readdir = readdir(D); |
b3eb6a9b |
566 | test 143, tainted $readdir; |
fb73857a |
567 | closedir(OP); |
568 | } else { |
b3eb6a9b |
569 | for (143) { print "ok $_ # Skipped: readdir() is not available\n" } |
fb73857a |
570 | } |
571 | |
572 | if ($Config{d_readlink} && $Config{d_symlink}) { |
573 | my $symlink = "sl$$"; |
574 | unlink($symlink); |
575 | symlink("/something/naughty", $symlink) or die "symlink: $!\n"; |
576 | my $readlink = readlink($symlink); |
b3eb6a9b |
577 | test 144, tainted $readlink; |
fb73857a |
578 | unlink($symlink); |
579 | } else { |
b3eb6a9b |
580 | for (144) { print "ok $_ # Skipped: readlink() or symlink() is not available\n"; } |
fb73857a |
581 | } |
582 | } |
583 | |
584 | # test bitwise ops (regression bug) |
585 | { |
586 | my $why = "y"; |
587 | my $j = "x" | $why; |
b3eb6a9b |
588 | test 145, not tainted $j; |
fb73857a |
589 | $why = $TAINT."y"; |
590 | $j = "x" | $why; |
b3eb6a9b |
591 | test 146, tainted $j; |
fb73857a |
592 | } |
593 | |
48c036b1 |
594 | # test target of substitution (regression bug) |
595 | { |
596 | my $why = $TAINT."y"; |
597 | $why =~ s/y/z/; |
b3eb6a9b |
598 | test 147, tainted $why; |
48c036b1 |
599 | |
600 | my $z = "[z]"; |
601 | $why =~ s/$z/zee/; |
b3eb6a9b |
602 | test 148, tainted $why; |
48c036b1 |
603 | |
604 | $why =~ s/e/'-'.$$/ge; |
b3eb6a9b |
605 | test 149, tainted $why; |
48c036b1 |
606 | } |