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; |
17 | |
0ecd3ba2 |
18 | $| = 1; |
19 | |
9d116dd7 |
20 | # We do not want the whole taint.t to fail |
21 | # just because Errno possibly failing. |
22 | eval { require Errno; import Errno }; |
23 | |
c9f931b8 |
24 | use vars qw($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++; |
36 | IPC::SysV->import(qw(IPC_PRIVATE IPC_RMID IPC_CREAT S_IRWXU)); |
37 | } |
b9d1c439 |
38 | } |
3eeba6fb |
39 | } |
40 | |
1e422769 |
41 | my $Is_VMS = $^O eq 'VMS'; |
68dc0745 |
42 | my $Is_MSWin32 = $^O eq 'MSWin32'; |
39e571d4 |
43 | my $Is_Dos = $^O eq 'dos'; |
68dc0745 |
44 | my $Invoke_Perl = $Is_VMS ? 'MCR Sys$Disk:[]Perl.' : |
45 | $Is_MSWin32 ? '.\perl' : './perl'; |
c90c0ff4 |
46 | my @MoreEnv = qw/IFS CDPATH ENV BASH_ENV/; |
7bac28a0 |
47 | |
1e422769 |
48 | if ($Is_VMS) { |
7bac28a0 |
49 | my (%old, $x); |
50 | for $x ('DCL$PATH', @MoreEnv) { |
51 | ($old{$x}) = $ENV{$x} =~ /^(.*)$/ if exists $ENV{$x}; |
52 | } |
1e422769 |
53 | eval <<EndOfCleanup; |
54 | END { |
3eeba6fb |
55 | \$ENV{PATH} = '' if $Config{d_setenv}; |
1e422769 |
56 | warn "# Note: logical name 'PATH' may have been deleted\n"; |
562a7b0c |
57 | \@ENV{keys %old} = values %old; |
1e422769 |
58 | } |
59 | EndOfCleanup |
60 | } |
61 | |
62 | # Sources of taint: |
63 | # The empty tainted value, for tainting strings |
64 | my $TAINT = substr($^X, 0, 0); |
65 | # A tainted zero, useful for tainting numbers |
66 | my $TAINT0 = 0 + $TAINT; |
67 | |
68 | # This taints each argument passed. All must be lvalues. |
69 | # Side effect: It also stringifies them. :-( |
70 | sub taint_these (@) { |
71 | for (@_) { $_ .= $TAINT } |
72 | } |
73 | |
74 | # How to identify taint when you see it |
75 | sub any_tainted (@) { |
76 | not eval { join("",@_), kill 0; 1 }; |
77 | } |
78 | sub tainted ($) { |
79 | any_tainted @_; |
80 | } |
81 | sub all_tainted (@) { |
82 | for (@_) { return 0 unless tainted $_ } |
83 | 1; |
84 | } |
85 | |
86 | sub test ($$;$) { |
87 | my($serial, $boolean, $diag) = @_; |
88 | if ($boolean) { |
89 | print "ok $serial\n"; |
90 | } else { |
91 | print "not ok $serial\n"; |
92 | for (split m/^/m, $diag) { |
93 | print "# $_"; |
94 | } |
9607fc9c |
95 | print "\n" unless |
1e422769 |
96 | $diag eq '' |
97 | or substr($diag, -1) eq "\n"; |
98 | } |
99 | } |
100 | |
101 | # We need an external program to call. |
5aabfad6 |
102 | my $ECHO = ($Is_MSWin32 ? ".\\echo$$" : "./echo$$"); |
1e422769 |
103 | END { unlink $ECHO } |
104 | open PROG, "> $ECHO" or die "Can't create $ECHO: $!"; |
105 | print PROG 'print "@ARGV\n"', "\n"; |
106 | close PROG; |
107 | my $echo = "$Invoke_Perl $ECHO"; |
108 | |
27c9684d |
109 | print "1..155\n"; |
1e422769 |
110 | |
111 | # First, let's make sure that Perl is checking the dangerous |
112 | # environment variables. Maybe they aren't set yet, so we'll |
113 | # taint them ourselves. |
114 | { |
115 | $ENV{'DCL$PATH'} = '' if $Is_VMS; |
116 | |
7bac28a0 |
117 | $ENV{PATH} = ''; |
c90c0ff4 |
118 | delete @ENV{@MoreEnv}; |
7bac28a0 |
119 | $ENV{TERM} = 'dumb'; |
120 | |
121 | test 1, eval { `$echo 1` } eq "1\n"; |
122 | |
39e571d4 |
123 | if ($Is_MSWin32 || $Is_VMS || $Is_Dos) { |
7bac28a0 |
124 | print "# Environment tainting tests skipped\n"; |
c90c0ff4 |
125 | for (2..5) { print "ok $_\n" } |
5aabfad6 |
126 | } |
127 | else { |
7bac28a0 |
128 | my @vars = ('PATH', @MoreEnv); |
129 | while (my $v = $vars[0]) { |
130 | local $ENV{$v} = $TAINT; |
131 | last if eval { `$echo 1` }; |
132 | last unless $@ =~ /^Insecure \$ENV{$v}/; |
133 | shift @vars; |
134 | } |
135 | test 2, !@vars, "\$$vars[0]"; |
c90c0ff4 |
136 | |
137 | # tainted $TERM is unsafe only if it contains metachars |
138 | local $ENV{TERM}; |
139 | $ENV{TERM} = 'e=mc2'; |
140 | test 3, eval { `$echo 1` } eq "1\n"; |
141 | $ENV{TERM} = 'e=mc2' . $TAINT; |
142 | test 4, eval { `$echo 1` } eq ''; |
143 | test 5, $@ =~ /^Insecure \$ENV{TERM}/, $@; |
5aabfad6 |
144 | } |
7bac28a0 |
145 | |
9607fc9c |
146 | my $tmp; |
48c036b1 |
147 | if ($^O eq 'os2' || $^O eq 'amigaos' || $Is_MSWin32 || $Is_Dos) { |
148 | print "# all directories are writeable\n"; |
149 | } |
150 | else { |
9607fc9c |
151 | $tmp = (grep { defined and -d and (stat _)[2] & 2 } |
099f76bb |
152 | qw(sys$scratch /tmp /var/tmp /usr/tmp), |
9607fc9c |
153 | @ENV{qw(TMP TEMP)})[0] |
154 | or print "# can't find world-writeable directory to test PATH\n"; |
155 | } |
156 | |
385588b3 |
157 | if ($tmp) { |
7bac28a0 |
158 | local $ENV{PATH} = $tmp; |
c90c0ff4 |
159 | test 6, eval { `$echo 1` } eq ''; |
160 | test 7, $@ =~ /^Insecure directory in \$ENV{PATH}/, $@; |
1e422769 |
161 | } |
162 | else { |
fac76ed7 |
163 | for (6..7) { print "ok $_ # Skipped: all directories are writeable\n" } |
1e422769 |
164 | } |
165 | |
1e422769 |
166 | if ($Is_VMS) { |
167 | $ENV{'DCL$PATH'} = $TAINT; |
c90c0ff4 |
168 | test 8, eval { `$echo 1` } eq ''; |
169 | test 9, $@ =~ /^Insecure \$ENV{DCL\$PATH}/, $@; |
9607fc9c |
170 | if ($tmp) { |
171 | $ENV{'DCL$PATH'} = $tmp; |
c90c0ff4 |
172 | test 10, eval { `$echo 1` } eq ''; |
173 | test 11, $@ =~ /^Insecure directory in \$ENV{DCL\$PATH}/, $@; |
9607fc9c |
174 | } |
175 | else { |
fac76ed7 |
176 | for (10..11) { print "ok $_ # Skipped: can't find world-writeable directory to test DCL\$PATH\n" } |
9607fc9c |
177 | } |
1e422769 |
178 | $ENV{'DCL$PATH'} = ''; |
179 | } |
180 | else { |
fac76ed7 |
181 | for (8..11) { print "ok $_ # Skipped: This is not VMS\n"; } |
1e422769 |
182 | } |
183 | } |
184 | |
185 | # Let's see that we can taint and untaint as needed. |
186 | { |
187 | my $foo = $TAINT; |
c90c0ff4 |
188 | test 12, tainted $foo; |
9607fc9c |
189 | |
190 | # That was a sanity check. If it failed, stop the insanity! |
191 | die "Taint checks don't seem to be enabled" unless tainted $foo; |
1e422769 |
192 | |
193 | $foo = "foo"; |
c90c0ff4 |
194 | test 13, not tainted $foo; |
1e422769 |
195 | |
196 | taint_these($foo); |
c90c0ff4 |
197 | test 14, tainted $foo; |
1e422769 |
198 | |
199 | my @list = 1..10; |
c90c0ff4 |
200 | test 15, not any_tainted @list; |
1e422769 |
201 | taint_these @list[1,3,5,7,9]; |
c90c0ff4 |
202 | test 16, any_tainted @list; |
203 | test 17, all_tainted @list[1,3,5,7,9]; |
204 | test 18, not any_tainted @list[0,2,4,6,8]; |
1e422769 |
205 | |
206 | ($foo) = $foo =~ /(.+)/; |
c90c0ff4 |
207 | test 19, not tainted $foo; |
1e422769 |
208 | |
209 | $foo = $1 if ('bar' . $TAINT) =~ /(.+)/; |
c90c0ff4 |
210 | test 20, not tainted $foo; |
211 | test 21, $foo eq 'bar'; |
1e422769 |
212 | |
b3eb6a9b |
213 | { |
214 | use re 'taint'; |
215 | |
216 | ($foo) = ('bar' . $TAINT) =~ /(.+)/; |
217 | test 22, tainted $foo; |
218 | test 23, $foo eq 'bar'; |
219 | |
220 | $foo = $1 if ('bar' . $TAINT) =~ /(.+)/; |
221 | test 24, tainted $foo; |
222 | test 25, $foo eq 'bar'; |
223 | } |
224 | |
225 | $foo = $1 if 'bar' =~ /(.+)$TAINT/; |
226 | test 26, tainted $foo; |
227 | test 27, $foo eq 'bar'; |
48c036b1 |
228 | |
1e422769 |
229 | my $pi = 4 * atan2(1,1) + $TAINT0; |
b3eb6a9b |
230 | test 28, tainted $pi; |
1e422769 |
231 | |
232 | ($pi) = $pi =~ /(\d+\.\d+)/; |
b3eb6a9b |
233 | test 29, not tainted $pi; |
234 | test 30, sprintf("%.5f", $pi) eq '3.14159'; |
1e422769 |
235 | } |
236 | |
237 | # How about command-line arguments? The problem is that we don't |
238 | # always get some, so we'll run another process with some. |
239 | { |
240 | my $arg = "./arg$$"; |
241 | open PROG, "> $arg" or die "Can't create $arg: $!"; |
242 | print PROG q{ |
243 | eval { join('', @ARGV), kill 0 }; |
244 | exit 0 if $@ =~ /^Insecure dependency/; |
245 | print "# Oops: \$@ was [$@]\n"; |
246 | exit 1; |
247 | }; |
248 | close PROG; |
249 | print `$Invoke_Perl "-T" $arg and some suspect arguments`; |
b3eb6a9b |
250 | test 31, !$?, "Exited with status $?"; |
1e422769 |
251 | unlink $arg; |
252 | } |
253 | |
254 | # Reading from a file should be tainted |
255 | { |
9607fc9c |
256 | my $file = './TEST'; |
b3eb6a9b |
257 | test 32, open(FILE, $file), "Couldn't open '$file': $!"; |
1e422769 |
258 | |
259 | my $block; |
260 | sysread(FILE, $block, 100); |
9607fc9c |
261 | my $line = <FILE>; |
1e422769 |
262 | close FILE; |
b3eb6a9b |
263 | test 33, tainted $block; |
264 | test 34, tainted $line; |
1e422769 |
265 | } |
266 | |
c90c0ff4 |
267 | # Globs should be forbidden, except under VMS, |
268 | # which doesn't spawn an external program. |
72b16652 |
269 | if (1 # built-in glob |
270 | or $Is_VMS) { |
b3eb6a9b |
271 | for (35..36) { print "ok $_\n"; } |
c90c0ff4 |
272 | } |
273 | else { |
7bac28a0 |
274 | my @globs = eval { <*> }; |
b3eb6a9b |
275 | test 35, @globs == 0 && $@ =~ /^Insecure dependency/; |
1e422769 |
276 | |
7bac28a0 |
277 | @globs = eval { glob '*' }; |
b3eb6a9b |
278 | test 36, @globs == 0 && $@ =~ /^Insecure dependency/; |
1e422769 |
279 | } |
280 | |
281 | # Output of commands should be tainted |
282 | { |
283 | my $foo = `$echo abc`; |
b3eb6a9b |
284 | test 37, tainted $foo; |
1e422769 |
285 | } |
286 | |
287 | # Certain system variables should be tainted |
288 | { |
b3eb6a9b |
289 | test 38, all_tainted $^X, $0; |
1e422769 |
290 | } |
291 | |
292 | # Results of matching should all be untainted |
293 | { |
294 | my $foo = "abcdefghi" . $TAINT; |
b3eb6a9b |
295 | test 39, tainted $foo; |
1e422769 |
296 | |
297 | $foo =~ /def/; |
b3eb6a9b |
298 | test 40, not any_tainted $`, $&, $'; |
1e422769 |
299 | |
300 | $foo =~ /(...)(...)(...)/; |
b3eb6a9b |
301 | test 41, not any_tainted $1, $2, $3, $+; |
1e422769 |
302 | |
303 | my @bar = $foo =~ /(...)(...)(...)/; |
b3eb6a9b |
304 | test 42, not any_tainted @bar; |
1e422769 |
305 | |
b3eb6a9b |
306 | test 43, tainted $foo; # $foo should still be tainted! |
307 | test 44, $foo eq "abcdefghi"; |
1e422769 |
308 | } |
309 | |
310 | # Operations which affect files can't use tainted data. |
311 | { |
b3eb6a9b |
312 | test 45, eval { chmod 0, $TAINT } eq '', 'chmod'; |
313 | test 46, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
314 | |
9607fc9c |
315 | # There is no feature test in $Config{} for truncate, |
316 | # so we allow for the possibility that it's missing. |
b3eb6a9b |
317 | test 47, eval { truncate 'NoSuChFiLe', $TAINT0 } eq '', 'truncate'; |
318 | test 48, $@ =~ /^(?:Insecure dependency|truncate not implemented)/, $@; |
1e422769 |
319 | |
b3eb6a9b |
320 | test 49, eval { rename '', $TAINT } eq '', 'rename'; |
321 | test 50, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
322 | |
b3eb6a9b |
323 | test 51, eval { unlink $TAINT } eq '', 'unlink'; |
324 | test 52, $@ =~ /^Insecure dependency/, $@; |
9607fc9c |
325 | |
b3eb6a9b |
326 | test 53, eval { utime $TAINT } eq '', 'utime'; |
327 | test 54, $@ =~ /^Insecure dependency/, $@; |
48c036b1 |
328 | |
1e422769 |
329 | if ($Config{d_chown}) { |
b3eb6a9b |
330 | test 55, eval { chown -1, -1, $TAINT } eq '', 'chown'; |
331 | test 56, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
332 | } |
333 | else { |
b3eb6a9b |
334 | for (55..56) { print "ok $_ # Skipped: chown() is not available\n" } |
1e422769 |
335 | } |
336 | |
337 | if ($Config{d_link}) { |
b3eb6a9b |
338 | test 57, eval { link $TAINT, '' } eq '', 'link'; |
339 | test 58, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
340 | } |
341 | else { |
b3eb6a9b |
342 | for (57..58) { print "ok $_ # Skipped: link() is not available\n" } |
1e422769 |
343 | } |
344 | |
345 | if ($Config{d_symlink}) { |
b3eb6a9b |
346 | test 59, eval { symlink $TAINT, '' } eq '', 'symlink'; |
347 | test 60, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
348 | } |
349 | else { |
b3eb6a9b |
350 | for (59..60) { print "ok $_ # Skipped: symlink() is not available\n" } |
1e422769 |
351 | } |
352 | } |
353 | |
354 | # Operations which affect directories can't use tainted data. |
355 | { |
b3eb6a9b |
356 | test 61, eval { mkdir $TAINT0, $TAINT } eq '', 'mkdir'; |
357 | test 62, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
358 | |
b3eb6a9b |
359 | test 63, eval { rmdir $TAINT } eq '', 'rmdir'; |
360 | test 64, $@ =~ /^Insecure dependency/, $@; |
9607fc9c |
361 | |
b3eb6a9b |
362 | test 65, eval { chdir $TAINT } eq '', 'chdir'; |
363 | test 66, $@ =~ /^Insecure dependency/, $@; |
48c036b1 |
364 | |
1e422769 |
365 | if ($Config{d_chroot}) { |
b3eb6a9b |
366 | test 67, eval { chroot $TAINT } eq '', 'chroot'; |
367 | test 68, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
368 | } |
369 | else { |
b3eb6a9b |
370 | for (67..68) { print "ok $_ # Skipped: chroot() is not available\n" } |
1e422769 |
371 | } |
372 | } |
373 | |
374 | # Some operations using files can't use tainted data. |
375 | { |
376 | my $foo = "imaginary library" . $TAINT; |
b3eb6a9b |
377 | test 69, eval { require $foo } eq '', 'require'; |
378 | test 70, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
379 | |
380 | my $filename = "./taintB$$"; # NB: $filename isn't tainted! |
381 | END { unlink $filename if defined $filename } |
382 | $foo = $filename . $TAINT; |
383 | unlink $filename; # in any case |
384 | |
b3eb6a9b |
385 | test 71, eval { open FOO, $foo } eq '', 'open for read'; |
386 | test 72, $@ eq '', $@; # NB: This should be allowed |
9d116dd7 |
387 | |
388 | # Try first new style but allow also old style. |
61ae2fbf |
389 | test 73, $!{ENOENT} || |
390 | $! == 2 || # File not found |
391 | ($Is_Dos && $! == 22) || |
392 | ($^O eq 'mint' && $! == 33); |
1e422769 |
393 | |
b3eb6a9b |
394 | test 74, eval { open FOO, "> $foo" } eq '', 'open for write'; |
395 | test 75, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
396 | } |
397 | |
398 | # Commands to the system can't use tainted data |
399 | { |
400 | my $foo = $TAINT; |
401 | |
402 | if ($^O eq 'amigaos') { |
b3eb6a9b |
403 | for (76..79) { print "ok $_ # Skipped: open('|') is not available\n" } |
1e422769 |
404 | } |
405 | else { |
06eaf0bc |
406 | test 76, eval { open FOO, "| x$foo" } eq '', 'popen to'; |
b3eb6a9b |
407 | test 77, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
408 | |
06eaf0bc |
409 | test 78, eval { open FOO, "x$foo |" } eq '', 'popen from'; |
b3eb6a9b |
410 | test 79, $@ =~ /^Insecure dependency/, $@; |
48c036b1 |
411 | } |
1e422769 |
412 | |
b3eb6a9b |
413 | test 80, eval { exec $TAINT } eq '', 'exec'; |
414 | test 81, $@ =~ /^Insecure dependency/, $@; |
9607fc9c |
415 | |
b3eb6a9b |
416 | test 82, eval { system $TAINT } eq '', 'system'; |
417 | test 83, $@ =~ /^Insecure dependency/, $@; |
48c036b1 |
418 | |
1e422769 |
419 | $foo = "*"; |
420 | taint_these $foo; |
421 | |
b3eb6a9b |
422 | test 84, eval { `$echo 1$foo` } eq '', 'backticks'; |
423 | test 85, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
424 | |
425 | if ($Is_VMS) { # wildcard expansion doesn't invoke shell, so is safe |
b3eb6a9b |
426 | test 86, join('', eval { glob $foo } ) ne '', 'globbing'; |
427 | test 87, $@ eq '', $@; |
1e422769 |
428 | } |
429 | else { |
b3eb6a9b |
430 | for (86..87) { print "ok $_ # Skipped: this is not VMS\n"; } |
1e422769 |
431 | } |
432 | } |
433 | |
434 | # Operations which affect processes can't use tainted data. |
435 | { |
b3eb6a9b |
436 | test 88, eval { kill 0, $TAINT } eq '', 'kill'; |
437 | test 89, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
438 | |
439 | if ($Config{d_setpgrp}) { |
b3eb6a9b |
440 | test 90, eval { setpgrp 0, $TAINT } eq '', 'setpgrp'; |
441 | test 91, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
442 | } |
443 | else { |
b3eb6a9b |
444 | for (90..91) { print "ok $_ # Skipped: setpgrp() is not available\n" } |
1e422769 |
445 | } |
446 | |
447 | if ($Config{d_setprior}) { |
b3eb6a9b |
448 | test 92, eval { setpriority 0, $TAINT, $TAINT } eq '', 'setpriority'; |
449 | test 93, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
450 | } |
451 | else { |
b3eb6a9b |
452 | for (92..93) { print "ok $_ # Skipped: setpriority() is not available\n" } |
1e422769 |
453 | } |
454 | } |
455 | |
456 | # Some miscellaneous operations can't use tainted data. |
457 | { |
458 | if ($Config{d_syscall}) { |
b3eb6a9b |
459 | test 94, eval { syscall $TAINT } eq '', 'syscall'; |
460 | test 95, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
461 | } |
462 | else { |
b3eb6a9b |
463 | for (94..95) { print "ok $_ # Skipped: syscall() is not available\n" } |
1e422769 |
464 | } |
465 | |
466 | { |
467 | my $foo = "x" x 979; |
468 | taint_these $foo; |
469 | local *FOO; |
470 | my $temp = "./taintC$$"; |
471 | END { unlink $temp } |
b3eb6a9b |
472 | test 96, open(FOO, "> $temp"), "Couldn't open $temp for write: $!"; |
1e422769 |
473 | |
b3eb6a9b |
474 | test 97, eval { ioctl FOO, $TAINT, $foo } eq '', 'ioctl'; |
475 | test 98, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
476 | |
477 | if ($Config{d_fcntl}) { |
b3eb6a9b |
478 | test 99, eval { fcntl FOO, $TAINT, $foo } eq '', 'fcntl'; |
479 | test 100, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
480 | } |
481 | else { |
b3eb6a9b |
482 | for (99..100) { print "ok $_ # Skipped: fcntl() is not available\n" } |
1e422769 |
483 | } |
484 | |
485 | close FOO; |
486 | } |
487 | } |
488 | |
9607fc9c |
489 | # Some tests involving references |
1e422769 |
490 | { |
491 | my $foo = 'abc' . $TAINT; |
492 | my $fooref = \$foo; |
b3eb6a9b |
493 | test 101, not tainted $fooref; |
494 | test 102, tainted $$fooref; |
495 | test 103, tainted $foo; |
1e422769 |
496 | } |
54310121 |
497 | |
498 | # Some tests involving assignment |
499 | { |
500 | my $foo = $TAINT0; |
501 | my $bar = $foo; |
b3eb6a9b |
502 | test 104, all_tainted $foo, $bar; |
503 | test 105, tainted($foo = $bar); |
504 | test 106, tainted($bar = $bar); |
505 | test 107, tainted($bar += $bar); |
506 | test 108, tainted($bar -= $bar); |
507 | test 109, tainted($bar *= $bar); |
508 | test 110, tainted($bar++); |
509 | test 111, tainted($bar /= $bar); |
510 | test 112, tainted($bar += 0); |
511 | test 113, tainted($bar -= 2); |
512 | test 114, tainted($bar *= -1); |
513 | test 115, tainted($bar /= 1); |
514 | test 116, tainted($bar--); |
515 | test 117, $bar == 0; |
54310121 |
516 | } |
a1f49e72 |
517 | |
518 | # Test assignment and return of lists |
519 | { |
520 | my @foo = ("A", "tainted" . $TAINT, "B"); |
b3eb6a9b |
521 | test 118, not tainted $foo[0]; |
522 | test 119, tainted $foo[1]; |
523 | test 120, not tainted $foo[2]; |
a1f49e72 |
524 | my @bar = @foo; |
b3eb6a9b |
525 | test 121, not tainted $bar[0]; |
526 | test 122, tainted $bar[1]; |
527 | test 123, not tainted $bar[2]; |
a1f49e72 |
528 | my @baz = eval { "A", "tainted" . $TAINT, "B" }; |
b3eb6a9b |
529 | test 124, not tainted $baz[0]; |
530 | test 125, tainted $baz[1]; |
531 | test 126, not tainted $baz[2]; |
a1f49e72 |
532 | my @plugh = eval q[ "A", "tainted" . $TAINT, "B" ]; |
b3eb6a9b |
533 | test 127, not tainted $plugh[0]; |
534 | test 128, tainted $plugh[1]; |
535 | test 129, not tainted $plugh[2]; |
a1f49e72 |
536 | my $nautilus = sub { "A", "tainted" . $TAINT, "B" }; |
b3eb6a9b |
537 | test 130, not tainted ((&$nautilus)[0]); |
538 | test 131, tainted ((&$nautilus)[1]); |
539 | test 132, not tainted ((&$nautilus)[2]); |
a1f49e72 |
540 | my @xyzzy = &$nautilus; |
b3eb6a9b |
541 | test 133, not tainted $xyzzy[0]; |
542 | test 134, tainted $xyzzy[1]; |
543 | test 135, not tainted $xyzzy[2]; |
a1f49e72 |
544 | my $red_october = sub { return "A", "tainted" . $TAINT, "B" }; |
b3eb6a9b |
545 | test 136, not tainted ((&$red_october)[0]); |
546 | test 137, tainted ((&$red_october)[1]); |
547 | test 138, not tainted ((&$red_october)[2]); |
a1f49e72 |
548 | my @corge = &$red_october; |
b3eb6a9b |
549 | test 139, not tainted $corge[0]; |
550 | test 140, tainted $corge[1]; |
551 | test 141, not tainted $corge[2]; |
a1f49e72 |
552 | } |
fb73857a |
553 | |
554 | # Test for system/library calls returning string data of dubious origin. |
555 | { |
556 | # No reliable %Config check for getpw* |
557 | if (eval { setpwent(); getpwent(); 1 }) { |
558 | setpwent(); |
559 | my @getpwent = getpwent(); |
560 | die "getpwent: $!\n" unless (@getpwent); |
b3eb6a9b |
561 | test 142,( not tainted $getpwent[0] |
2959b6e3 |
562 | and tainted $getpwent[1] |
fb73857a |
563 | and not tainted $getpwent[2] |
564 | and not tainted $getpwent[3] |
565 | and not tainted $getpwent[4] |
566 | and not tainted $getpwent[5] |
3972a534 |
567 | and tainted $getpwent[6] # ge?cos |
fb73857a |
568 | and not tainted $getpwent[7] |
3972a534 |
569 | and tainted $getpwent[8]); # shell |
fb73857a |
570 | endpwent(); |
571 | } else { |
b3eb6a9b |
572 | for (142) { print "ok $_ # Skipped: getpwent() is not available\n" } |
fb73857a |
573 | } |
574 | |
575 | if ($Config{d_readdir}) { # pretty hard to imagine not |
576 | local(*D); |
577 | opendir(D, "op") or die "opendir: $!\n"; |
578 | my $readdir = readdir(D); |
b3eb6a9b |
579 | test 143, tainted $readdir; |
fb73857a |
580 | closedir(OP); |
581 | } else { |
b3eb6a9b |
582 | for (143) { print "ok $_ # Skipped: readdir() is not available\n" } |
fb73857a |
583 | } |
584 | |
585 | if ($Config{d_readlink} && $Config{d_symlink}) { |
586 | my $symlink = "sl$$"; |
587 | unlink($symlink); |
588 | symlink("/something/naughty", $symlink) or die "symlink: $!\n"; |
589 | my $readlink = readlink($symlink); |
b3eb6a9b |
590 | test 144, tainted $readlink; |
fb73857a |
591 | unlink($symlink); |
592 | } else { |
b3eb6a9b |
593 | for (144) { print "ok $_ # Skipped: readlink() or symlink() is not available\n"; } |
fb73857a |
594 | } |
595 | } |
596 | |
597 | # test bitwise ops (regression bug) |
598 | { |
599 | my $why = "y"; |
600 | my $j = "x" | $why; |
b3eb6a9b |
601 | test 145, not tainted $j; |
fb73857a |
602 | $why = $TAINT."y"; |
603 | $j = "x" | $why; |
b3eb6a9b |
604 | test 146, tainted $j; |
fb73857a |
605 | } |
606 | |
48c036b1 |
607 | # test target of substitution (regression bug) |
608 | { |
609 | my $why = $TAINT."y"; |
610 | $why =~ s/y/z/; |
b3eb6a9b |
611 | test 147, tainted $why; |
48c036b1 |
612 | |
613 | my $z = "[z]"; |
614 | $why =~ s/$z/zee/; |
b3eb6a9b |
615 | test 148, tainted $why; |
48c036b1 |
616 | |
617 | $why =~ s/e/'-'.$$/ge; |
b3eb6a9b |
618 | test 149, tainted $why; |
48c036b1 |
619 | } |
d929ce6f |
620 | |
621 | # test shmread |
622 | { |
c9f931b8 |
623 | unless ($ipcsysv) { |
624 | print "ok 150 # skipped: no IPC::SysV\n"; |
625 | last; |
626 | } |
be3174d2 |
627 | if ($Config{'extensions'} =~ /\bIPC\/SysV\b/ && $Config{d_shm}) { |
b9d1c439 |
628 | no strict 'subs'; |
d929ce6f |
629 | my $sent = "foobar"; |
630 | my $rcvd; |
631 | my $size = 2000; |
c2e66d9e |
632 | my $id = shmget(IPC_PRIVATE, $size, S_IRWXU); |
633 | |
41d6edb2 |
634 | if (defined $id) { |
635 | if (shmwrite($id, $sent, 0, 60)) { |
636 | if (shmread($id, $rcvd, 0, 60)) { |
d929ce6f |
637 | substr($rcvd, index($rcvd, "\0")) = ''; |
638 | } else { |
639 | warn "# shmread failed: $!\n"; |
640 | } |
641 | } else { |
642 | warn "# shmwrite failed: $!\n"; |
643 | } |
c2e66d9e |
644 | shmctl($id, IPC_RMID, 0) or warn "# shmctl failed: $!\n"; |
41d6edb2 |
645 | } else { |
646 | warn "# shmget failed: $!\n"; |
d929ce6f |
647 | } |
648 | |
649 | if ($rcvd eq $sent) { |
650 | test 150, tainted $rcvd; |
651 | } else { |
652 | print "ok 150 # Skipped: SysV shared memory operation failed\n"; |
653 | } |
654 | } else { |
41d6edb2 |
655 | print "ok 150 # Skipped: SysV shared memory is not available\n"; |
d929ce6f |
656 | } |
657 | } |
41d6edb2 |
658 | |
659 | # test msgrcv |
660 | { |
c9f931b8 |
661 | unless ($ipcsysv) { |
662 | print "ok 151 # skipped: no IPC::SysV\n"; |
663 | last; |
664 | } |
be3174d2 |
665 | if ($Config{'extensions'} =~ /\bIPC\/SysV\b/ && $Config{d_msg}) { |
b9d1c439 |
666 | no strict 'subs'; |
41d6edb2 |
667 | my $id = msgget(IPC_PRIVATE, IPC_CREAT | S_IRWXU); |
668 | |
669 | my $sent = "message"; |
670 | my $type_sent = 1234; |
671 | my $rcvd; |
672 | my $type_rcvd; |
673 | |
674 | if (defined $id) { |
675 | if (msgsnd($id, pack("l! a*", $type_sent, $sent), 0)) { |
676 | if (msgrcv($id, $rcvd, 60, 0, 0)) { |
677 | ($type_rcvd, $rcvd) = unpack("l! a*", $rcvd); |
678 | } else { |
679 | warn "# msgrcv failed\n"; |
680 | } |
681 | } else { |
682 | warn "# msgsnd failed\n"; |
683 | } |
c2e66d9e |
684 | msgctl($id, IPC_RMID, 0) or warn "# msgctl failed: $!\n"; |
41d6edb2 |
685 | } else { |
686 | warn "# msgget failed\n"; |
687 | } |
688 | |
689 | if ($rcvd eq $sent && $type_sent == $type_rcvd) { |
690 | test 151, tainted $rcvd; |
691 | } else { |
692 | print "ok 151 # Skipped: SysV message queue operation failed\n"; |
693 | } |
694 | } else { |
695 | print "ok 151 # Skipped: SysV message queues are not available\n"; |
696 | } |
697 | } |
698 | |
3887d568 |
699 | { |
700 | # bug id 20001004.006 |
701 | |
702 | open IN, "./TEST" or warn "$0: cannot read ./TEST: $!" ; |
703 | local $/; |
704 | my $a = <IN>; |
705 | my $b = <IN>; |
706 | print "not " unless tainted($a) && tainted($b) && !defined($b); |
707 | print "ok 152\n"; |
27c9684d |
708 | close IN; |
3887d568 |
709 | } |
27c9684d |
710 | |
711 | { |
712 | # bug id 20001004.007 |
713 | |
714 | open IN, "./TEST" or warn "$0: cannot read ./TEST: $!" ; |
715 | my $a = <IN>; |
716 | |
717 | my $c = { a => 42, |
718 | b => $a }; |
719 | print "not " unless !tainted($c->{a}) && tainted($c->{b}); |
720 | print "ok 153\n"; |
721 | |
722 | my $d = { a => $a, |
723 | b => 42 }; |
724 | print "not " unless tainted($d->{a}) && !tainted($d->{b}); |
725 | print "ok 154\n"; |
726 | |
727 | my $e = { a => 42, |
728 | b => { c => $a, d => 42 } }; |
729 | print "not " unless !tainted($e->{a}) && |
730 | !tainted($e->{b}) && |
731 | tainted($e->{b}->{c}) && |
732 | !tainted($e->{b}->{d}); |
733 | print "ok 155\n"; |
734 | |
735 | close IN; |
736 | } |
737 | |