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'; } |
beeaa6fd |
20 | plan tests => 261; |
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'; |
8c2c7bd1 |
47 | my $Is_OpenBSD = $^O eq 'openbsd'; |
08322f8f |
48 | my $Invoke_Perl = $Is_VMS ? 'MCR Sys$Disk:[]Perl.exe' : |
09f04786 |
49 | $Is_MSWin32 ? '.\perl' : |
50 | $Is_MacOS ? ':perl' : |
51 | $Is_NetWare ? 'perl' : |
52 | './perl' ; |
c90c0ff4 |
53 | my @MoreEnv = qw/IFS CDPATH ENV BASH_ENV/; |
7bac28a0 |
54 | |
1e422769 |
55 | if ($Is_VMS) { |
7bac28a0 |
56 | my (%old, $x); |
57 | for $x ('DCL$PATH', @MoreEnv) { |
58 | ($old{$x}) = $ENV{$x} =~ /^(.*)$/ if exists $ENV{$x}; |
59 | } |
1e422769 |
60 | eval <<EndOfCleanup; |
61 | END { |
3eeba6fb |
62 | \$ENV{PATH} = '' if $Config{d_setenv}; |
1e422769 |
63 | warn "# Note: logical name 'PATH' may have been deleted\n"; |
562a7b0c |
64 | \@ENV{keys %old} = values %old; |
1e422769 |
65 | } |
66 | EndOfCleanup |
67 | } |
68 | |
69 | # Sources of taint: |
70 | # The empty tainted value, for tainting strings |
71 | my $TAINT = substr($^X, 0, 0); |
72 | # A tainted zero, useful for tainting numbers |
09f04786 |
73 | my $TAINT0; |
74 | { |
75 | no warnings; |
76 | $TAINT0 = 0 + $TAINT; |
77 | } |
1e422769 |
78 | |
79 | # This taints each argument passed. All must be lvalues. |
80 | # Side effect: It also stringifies them. :-( |
81 | sub taint_these (@) { |
82 | for (@_) { $_ .= $TAINT } |
83 | } |
84 | |
85 | # How to identify taint when you see it |
86 | sub any_tainted (@) { |
87 | not eval { join("",@_), kill 0; 1 }; |
88 | } |
89 | sub tainted ($) { |
90 | any_tainted @_; |
91 | } |
92 | sub all_tainted (@) { |
93 | for (@_) { return 0 unless tainted $_ } |
94 | 1; |
95 | } |
96 | |
09f04786 |
97 | |
98 | sub test ($;$) { |
99 | my($ok, $diag) = @_; |
100 | |
101 | my $curr_test = curr_test(); |
102 | |
103 | if ($ok) { |
104 | print "ok $curr_test\n"; |
1e422769 |
105 | } else { |
09f04786 |
106 | print "not ok $curr_test\n"; |
107 | printf "# Failed test at line %d\n", (caller)[2]; |
1e422769 |
108 | for (split m/^/m, $diag) { |
109 | print "# $_"; |
110 | } |
9607fc9c |
111 | print "\n" unless |
1e422769 |
112 | $diag eq '' |
113 | or substr($diag, -1) eq "\n"; |
114 | } |
09f04786 |
115 | |
116 | next_test(); |
117 | |
118 | return $ok; |
1e422769 |
119 | } |
120 | |
121 | # We need an external program to call. |
dc459aad |
122 | my $ECHO = ($Is_MSWin32 ? ".\\echo$$" : $Is_MacOS ? ":echo$$" : ($Is_NetWare ? "echo$$" : "./echo$$")); |
1e422769 |
123 | END { unlink $ECHO } |
124 | open PROG, "> $ECHO" or die "Can't create $ECHO: $!"; |
125 | print PROG 'print "@ARGV\n"', "\n"; |
126 | close PROG; |
127 | my $echo = "$Invoke_Perl $ECHO"; |
128 | |
dc459aad |
129 | my $TEST = catfile(curdir(), 'TEST'); |
130 | |
1e422769 |
131 | # First, let's make sure that Perl is checking the dangerous |
132 | # environment variables. Maybe they aren't set yet, so we'll |
133 | # taint them ourselves. |
134 | { |
135 | $ENV{'DCL$PATH'} = '' if $Is_VMS; |
136 | |
f68313a1 |
137 | if ($Is_MSWin32 && $Config{ccname} =~ /bcc32/ && ! -f 'cc3250mt.dll') { |
138 | my $bcc_dir; |
139 | foreach my $dir (split /$Config{path_sep}/, $ENV{PATH}) { |
140 | if (-f "$dir/cc3250mt.dll") { |
141 | $bcc_dir = $dir and last; |
142 | } |
143 | } |
144 | if (defined $bcc_dir) { |
145 | require File::Copy; |
146 | File::Copy::copy("$bcc_dir/cc3250mt.dll", '.') or |
147 | die "$0: failed to copy cc3250mt.dll: $!\n"; |
148 | eval q{ |
149 | END { unlink "cc3250mt.dll" } |
150 | }; |
151 | } |
152 | } |
eee7770f |
153 | if ($Is_Cygwin and (! -f 'cygwin1.dll' or ! -f 'cygcrypt-0.dll')) { |
154 | require File::Copy; |
155 | -f 'cygwin1.dll' or File::Copy::copy("/usr/bin/cygwin1.dll", '.') or |
156 | die "$0: failed to copy cygwin1.dll: $!\n"; |
157 | -f 'cygcyrypt-0.dll' or File::Copy::copy("/usr/bin/cygcrypt-0.dll", '.') or |
158 | die "$0: failed to copy cygcrypt-0.dll: $!\n"; |
159 | eval q{ |
160 | END { unlink "cygwin1.dll"; unlink "cygcrypt-0.dll"; } |
161 | }; |
162 | } |
7bac28a0 |
163 | $ENV{PATH} = ''; |
c90c0ff4 |
164 | delete @ENV{@MoreEnv}; |
7bac28a0 |
165 | $ENV{TERM} = 'dumb'; |
166 | |
09f04786 |
167 | test eval { `$echo 1` } eq "1\n"; |
168 | |
169 | SKIP: { |
170 | skip "Environment tainting tests skipped", 4 |
171 | if $Is_MSWin32 || $Is_NetWare || $Is_VMS || $Is_Dos || $Is_MacOS; |
7bac28a0 |
172 | |
7bac28a0 |
173 | my @vars = ('PATH', @MoreEnv); |
174 | while (my $v = $vars[0]) { |
175 | local $ENV{$v} = $TAINT; |
176 | last if eval { `$echo 1` }; |
177 | last unless $@ =~ /^Insecure \$ENV{$v}/; |
178 | shift @vars; |
179 | } |
09f04786 |
180 | test !@vars, "@vars"; |
c90c0ff4 |
181 | |
182 | # tainted $TERM is unsafe only if it contains metachars |
183 | local $ENV{TERM}; |
184 | $ENV{TERM} = 'e=mc2'; |
09f04786 |
185 | test eval { `$echo 1` } eq "1\n"; |
c90c0ff4 |
186 | $ENV{TERM} = 'e=mc2' . $TAINT; |
09f04786 |
187 | test !eval { `$echo 1` }; |
188 | test $@ =~ /^Insecure \$ENV{TERM}/, $@; |
5aabfad6 |
189 | } |
7bac28a0 |
190 | |
9607fc9c |
191 | my $tmp; |
2986a63f |
192 | if ($^O eq 'os2' || $^O eq 'amigaos' || $Is_MSWin32 || $Is_NetWare || $Is_Dos) { |
48c036b1 |
193 | print "# all directories are writeable\n"; |
194 | } |
195 | else { |
9607fc9c |
196 | $tmp = (grep { defined and -d and (stat _)[2] & 2 } |
099f76bb |
197 | qw(sys$scratch /tmp /var/tmp /usr/tmp), |
9607fc9c |
198 | @ENV{qw(TMP TEMP)})[0] |
199 | or print "# can't find world-writeable directory to test PATH\n"; |
200 | } |
201 | |
09f04786 |
202 | SKIP: { |
203 | skip "all directories are writeable", 2 unless $tmp; |
204 | |
7bac28a0 |
205 | local $ENV{PATH} = $tmp; |
09f04786 |
206 | test !eval { `$echo 1` }; |
207 | test $@ =~ /^Insecure directory in \$ENV{PATH}/, $@; |
1e422769 |
208 | } |
209 | |
09f04786 |
210 | SKIP: { |
211 | skip "This is not VMS", 4 unless $Is_VMS; |
212 | |
1e422769 |
213 | $ENV{'DCL$PATH'} = $TAINT; |
09f04786 |
214 | test eval { `$echo 1` } eq ''; |
215 | test $@ =~ /^Insecure \$ENV{DCL\$PATH}/, $@; |
216 | SKIP: { |
217 | skip q[can't find world-writeable directory to test DCL$PATH], 2 |
25fb98c0 |
218 | unless $tmp; |
09f04786 |
219 | |
9607fc9c |
220 | $ENV{'DCL$PATH'} = $tmp; |
09f04786 |
221 | test eval { `$echo 1` } eq ''; |
222 | test $@ =~ /^Insecure directory in \$ENV{DCL\$PATH}/, $@; |
9607fc9c |
223 | } |
1e422769 |
224 | $ENV{'DCL$PATH'} = ''; |
225 | } |
1e422769 |
226 | } |
227 | |
228 | # Let's see that we can taint and untaint as needed. |
229 | { |
230 | my $foo = $TAINT; |
09f04786 |
231 | test tainted $foo; |
9607fc9c |
232 | |
233 | # That was a sanity check. If it failed, stop the insanity! |
234 | die "Taint checks don't seem to be enabled" unless tainted $foo; |
1e422769 |
235 | |
236 | $foo = "foo"; |
09f04786 |
237 | test not tainted $foo; |
1e422769 |
238 | |
239 | taint_these($foo); |
09f04786 |
240 | test tainted $foo; |
1e422769 |
241 | |
242 | my @list = 1..10; |
09f04786 |
243 | test not any_tainted @list; |
1e422769 |
244 | taint_these @list[1,3,5,7,9]; |
09f04786 |
245 | test any_tainted @list; |
246 | test all_tainted @list[1,3,5,7,9]; |
247 | test not any_tainted @list[0,2,4,6,8]; |
1e422769 |
248 | |
249 | ($foo) = $foo =~ /(.+)/; |
09f04786 |
250 | test not tainted $foo; |
1e422769 |
251 | |
252 | $foo = $1 if ('bar' . $TAINT) =~ /(.+)/; |
09f04786 |
253 | test not tainted $foo; |
254 | test $foo eq 'bar'; |
1e422769 |
255 | |
b3eb6a9b |
256 | { |
257 | use re 'taint'; |
258 | |
259 | ($foo) = ('bar' . $TAINT) =~ /(.+)/; |
09f04786 |
260 | test tainted $foo; |
261 | test $foo eq 'bar'; |
b3eb6a9b |
262 | |
263 | $foo = $1 if ('bar' . $TAINT) =~ /(.+)/; |
09f04786 |
264 | test tainted $foo; |
265 | test $foo eq 'bar'; |
b3eb6a9b |
266 | } |
267 | |
268 | $foo = $1 if 'bar' =~ /(.+)$TAINT/; |
09f04786 |
269 | test tainted $foo; |
270 | test $foo eq 'bar'; |
48c036b1 |
271 | |
1e422769 |
272 | my $pi = 4 * atan2(1,1) + $TAINT0; |
09f04786 |
273 | test tainted $pi; |
1e422769 |
274 | |
275 | ($pi) = $pi =~ /(\d+\.\d+)/; |
09f04786 |
276 | test not tainted $pi; |
277 | test sprintf("%.5f", $pi) eq '3.14159'; |
1e422769 |
278 | } |
279 | |
280 | # How about command-line arguments? The problem is that we don't |
281 | # always get some, so we'll run another process with some. |
dc459aad |
282 | SKIP: { |
283 | my $arg = catfile(curdir(), "arg$$"); |
1e422769 |
284 | open PROG, "> $arg" or die "Can't create $arg: $!"; |
285 | print PROG q{ |
286 | eval { join('', @ARGV), kill 0 }; |
287 | exit 0 if $@ =~ /^Insecure dependency/; |
288 | print "# Oops: \$@ was [$@]\n"; |
289 | exit 1; |
290 | }; |
291 | close PROG; |
292 | print `$Invoke_Perl "-T" $arg and some suspect arguments`; |
09f04786 |
293 | test !$?, "Exited with status $?"; |
1e422769 |
294 | unlink $arg; |
295 | } |
296 | |
297 | # Reading from a file should be tainted |
298 | { |
09f04786 |
299 | test open(FILE, $TEST), "Couldn't open '$TEST': $!"; |
1e422769 |
300 | |
301 | my $block; |
302 | sysread(FILE, $block, 100); |
9607fc9c |
303 | my $line = <FILE>; |
1e422769 |
304 | close FILE; |
09f04786 |
305 | test tainted $block; |
306 | test tainted $line; |
1e422769 |
307 | } |
308 | |
c90c0ff4 |
309 | # Globs should be forbidden, except under VMS, |
310 | # which doesn't spawn an external program. |
09f04786 |
311 | SKIP: { |
312 | skip "globs should be forbidden", 2 if 1 or $Is_VMS; |
313 | |
7bac28a0 |
314 | my @globs = eval { <*> }; |
09f04786 |
315 | test @globs == 0 && $@ =~ /^Insecure dependency/; |
1e422769 |
316 | |
7bac28a0 |
317 | @globs = eval { glob '*' }; |
09f04786 |
318 | test @globs == 0 && $@ =~ /^Insecure dependency/; |
1e422769 |
319 | } |
320 | |
321 | # Output of commands should be tainted |
322 | { |
323 | my $foo = `$echo abc`; |
09f04786 |
324 | test tainted $foo; |
1e422769 |
325 | } |
326 | |
327 | # Certain system variables should be tainted |
328 | { |
09f04786 |
329 | test all_tainted $^X, $0; |
1e422769 |
330 | } |
331 | |
332 | # Results of matching should all be untainted |
333 | { |
334 | my $foo = "abcdefghi" . $TAINT; |
09f04786 |
335 | test tainted $foo; |
1e422769 |
336 | |
337 | $foo =~ /def/; |
09f04786 |
338 | test not any_tainted $`, $&, $'; |
1e422769 |
339 | |
340 | $foo =~ /(...)(...)(...)/; |
09f04786 |
341 | test not any_tainted $1, $2, $3, $+; |
1e422769 |
342 | |
343 | my @bar = $foo =~ /(...)(...)(...)/; |
09f04786 |
344 | test not any_tainted @bar; |
1e422769 |
345 | |
09f04786 |
346 | test tainted $foo; # $foo should still be tainted! |
347 | test $foo eq "abcdefghi"; |
1e422769 |
348 | } |
349 | |
350 | # Operations which affect files can't use tainted data. |
351 | { |
09f04786 |
352 | test !eval { chmod 0, $TAINT }, 'chmod'; |
353 | test $@ =~ /^Insecure dependency/, $@; |
1e422769 |
354 | |
9607fc9c |
355 | # There is no feature test in $Config{} for truncate, |
356 | # so we allow for the possibility that it's missing. |
09f04786 |
357 | test !eval { truncate 'NoSuChFiLe', $TAINT0 }, 'truncate'; |
358 | test $@ =~ /^(?:Insecure dependency|truncate not implemented)/, $@; |
1e422769 |
359 | |
09f04786 |
360 | test !eval { rename '', $TAINT }, 'rename'; |
361 | test $@ =~ /^Insecure dependency/, $@; |
1e422769 |
362 | |
09f04786 |
363 | test !eval { unlink $TAINT }, 'unlink'; |
364 | test $@ =~ /^Insecure dependency/, $@; |
9607fc9c |
365 | |
09f04786 |
366 | test !eval { utime $TAINT }, 'utime'; |
367 | test $@ =~ /^Insecure dependency/, $@; |
48c036b1 |
368 | |
09f04786 |
369 | SKIP: { |
370 | skip "chown() is not available", 2 unless $Config{d_chown}; |
1e422769 |
371 | |
09f04786 |
372 | test !eval { chown -1, -1, $TAINT }, 'chown'; |
373 | test $@ =~ /^Insecure dependency/, $@; |
1e422769 |
374 | } |
375 | |
09f04786 |
376 | SKIP: { |
377 | skip "link() is not available", 2 unless $Config{d_link}; |
378 | |
379 | test !eval { link $TAINT, '' }, 'link'; |
380 | test $@ =~ /^Insecure dependency/, $@; |
1e422769 |
381 | } |
09f04786 |
382 | |
383 | SKIP: { |
384 | skip "symlink() is not available", 2 unless $Config{d_symlink}; |
385 | |
386 | test !eval { symlink $TAINT, '' }, 'symlink'; |
387 | test $@ =~ /^Insecure dependency/, $@; |
1e422769 |
388 | } |
389 | } |
390 | |
391 | # Operations which affect directories can't use tainted data. |
392 | { |
09f04786 |
393 | test !eval { mkdir "foo".$TAINT, 0755.$TAINT0 }, 'mkdir'; |
394 | test $@ =~ /^Insecure dependency/, $@; |
1e422769 |
395 | |
09f04786 |
396 | test !eval { rmdir $TAINT }, 'rmdir'; |
397 | test $@ =~ /^Insecure dependency/, $@; |
9607fc9c |
398 | |
09f04786 |
399 | test !eval { chdir "foo".$TAINT }, 'chdir'; |
400 | test $@ =~ /^Insecure dependency/, $@; |
48c036b1 |
401 | |
09f04786 |
402 | SKIP: { |
403 | skip "chroot() is not available", 2 unless $Config{d_chroot}; |
404 | |
405 | test !eval { chroot $TAINT }, 'chroot'; |
406 | test $@ =~ /^Insecure dependency/, $@; |
1e422769 |
407 | } |
408 | } |
409 | |
410 | # Some operations using files can't use tainted data. |
411 | { |
412 | my $foo = "imaginary library" . $TAINT; |
09f04786 |
413 | test !eval { require $foo }, 'require'; |
414 | test $@ =~ /^Insecure dependency/, $@; |
1e422769 |
415 | |
416 | my $filename = "./taintB$$"; # NB: $filename isn't tainted! |
417 | END { unlink $filename if defined $filename } |
418 | $foo = $filename . $TAINT; |
419 | unlink $filename; # in any case |
420 | |
09f04786 |
421 | test !eval { open FOO, $foo }, 'open for read'; |
422 | test $@ eq '', $@; # NB: This should be allowed |
9d116dd7 |
423 | |
424 | # Try first new style but allow also old style. |
327ccce1 |
425 | # We do not want the whole taint.t to fail |
426 | # just because Errno possibly failing. |
09f04786 |
427 | test eval('$!{ENOENT}') || |
61ae2fbf |
428 | $! == 2 || # File not found |
429 | ($Is_Dos && $! == 22) || |
430 | ($^O eq 'mint' && $! == 33); |
1e422769 |
431 | |
09f04786 |
432 | test !eval { open FOO, "> $foo" }, 'open for write'; |
433 | test $@ =~ /^Insecure dependency/, $@; |
1e422769 |
434 | } |
435 | |
436 | # Commands to the system can't use tainted data |
437 | { |
438 | my $foo = $TAINT; |
439 | |
09f04786 |
440 | SKIP: { |
441 | skip "open('|') is not available", 4 if $^O eq 'amigaos'; |
442 | |
443 | test !eval { open FOO, "| x$foo" }, 'popen to'; |
444 | test $@ =~ /^Insecure dependency/, $@; |
1e422769 |
445 | |
09f04786 |
446 | test !eval { open FOO, "x$foo |" }, 'popen from'; |
447 | test $@ =~ /^Insecure dependency/, $@; |
48c036b1 |
448 | } |
1e422769 |
449 | |
09f04786 |
450 | test !eval { exec $TAINT }, 'exec'; |
451 | test $@ =~ /^Insecure dependency/, $@; |
9607fc9c |
452 | |
09f04786 |
453 | test !eval { system $TAINT }, 'system'; |
454 | test $@ =~ /^Insecure dependency/, $@; |
48c036b1 |
455 | |
1e422769 |
456 | $foo = "*"; |
457 | taint_these $foo; |
458 | |
09f04786 |
459 | test !eval { `$echo 1$foo` }, 'backticks'; |
460 | test $@ =~ /^Insecure dependency/, $@; |
1e422769 |
461 | |
09f04786 |
462 | SKIP: { |
463 | # wildcard expansion doesn't invoke shell on VMS, so is safe |
464 | skip "This is not VMS", 2 unless $Is_VMS; |
465 | |
466 | test join('', eval { glob $foo } ) ne '', 'globbing'; |
467 | test $@ eq '', $@; |
1e422769 |
468 | } |
469 | } |
470 | |
471 | # Operations which affect processes can't use tainted data. |
472 | { |
09f04786 |
473 | test !eval { kill 0, $TAINT }, 'kill'; |
474 | test $@ =~ /^Insecure dependency/, $@; |
1e422769 |
475 | |
09f04786 |
476 | SKIP: { |
477 | skip "setpgrp() is not available", 2 unless $Config{d_setpgrp}; |
1e422769 |
478 | |
09f04786 |
479 | test !eval { setpgrp 0, $TAINT0 }, 'setpgrp'; |
480 | test $@ =~ /^Insecure dependency/, $@; |
1e422769 |
481 | } |
09f04786 |
482 | |
483 | SKIP: { |
484 | skip "setpriority() is not available", 2 unless $Config{d_setprior}; |
485 | |
486 | test !eval { setpriority 0, $TAINT0, $TAINT0 }, 'setpriority'; |
487 | test $@ =~ /^Insecure dependency/, $@; |
1e422769 |
488 | } |
489 | } |
490 | |
491 | # Some miscellaneous operations can't use tainted data. |
492 | { |
09f04786 |
493 | SKIP: { |
494 | skip "syscall() is not available", 2 unless $Config{d_syscall}; |
495 | |
496 | test !eval { syscall $TAINT }, 'syscall'; |
497 | test $@ =~ /^Insecure dependency/, $@; |
1e422769 |
498 | } |
499 | |
500 | { |
501 | my $foo = "x" x 979; |
502 | taint_these $foo; |
503 | local *FOO; |
504 | my $temp = "./taintC$$"; |
505 | END { unlink $temp } |
09f04786 |
506 | test open(FOO, "> $temp"), "Couldn't open $temp for write: $!"; |
1e422769 |
507 | |
09f04786 |
508 | test !eval { ioctl FOO, $TAINT0, $foo }, 'ioctl'; |
509 | test $@ =~ /^Insecure dependency/, $@; |
1e422769 |
510 | |
09f04786 |
511 | SKIP: { |
512 | skip "fcntl() is not available", 2 unless $Config{d_fcntl}; |
513 | |
514 | test !eval { fcntl FOO, $TAINT0, $foo }, 'fcntl'; |
515 | test $@ =~ /^Insecure dependency/, $@; |
1e422769 |
516 | } |
517 | |
518 | close FOO; |
519 | } |
520 | } |
521 | |
9607fc9c |
522 | # Some tests involving references |
1e422769 |
523 | { |
524 | my $foo = 'abc' . $TAINT; |
525 | my $fooref = \$foo; |
09f04786 |
526 | test not tainted $fooref; |
527 | test tainted $$fooref; |
528 | test tainted $foo; |
1e422769 |
529 | } |
54310121 |
530 | |
531 | # Some tests involving assignment |
532 | { |
533 | my $foo = $TAINT0; |
534 | my $bar = $foo; |
09f04786 |
535 | test all_tainted $foo, $bar; |
536 | test tainted($foo = $bar); |
537 | test tainted($bar = $bar); |
538 | test tainted($bar += $bar); |
539 | test tainted($bar -= $bar); |
540 | test tainted($bar *= $bar); |
541 | test tainted($bar++); |
542 | test tainted($bar /= $bar); |
543 | test tainted($bar += 0); |
544 | test tainted($bar -= 2); |
545 | test tainted($bar *= -1); |
546 | test tainted($bar /= 1); |
547 | test tainted($bar--); |
548 | test $bar == 0; |
54310121 |
549 | } |
a1f49e72 |
550 | |
551 | # Test assignment and return of lists |
552 | { |
553 | my @foo = ("A", "tainted" . $TAINT, "B"); |
09f04786 |
554 | test not tainted $foo[0]; |
555 | test tainted $foo[1]; |
556 | test not tainted $foo[2]; |
a1f49e72 |
557 | my @bar = @foo; |
09f04786 |
558 | test not tainted $bar[0]; |
559 | test tainted $bar[1]; |
560 | test not tainted $bar[2]; |
a1f49e72 |
561 | my @baz = eval { "A", "tainted" . $TAINT, "B" }; |
09f04786 |
562 | test not tainted $baz[0]; |
563 | test tainted $baz[1]; |
564 | test not tainted $baz[2]; |
a1f49e72 |
565 | my @plugh = eval q[ "A", "tainted" . $TAINT, "B" ]; |
09f04786 |
566 | test not tainted $plugh[0]; |
567 | test tainted $plugh[1]; |
568 | test not tainted $plugh[2]; |
a1f49e72 |
569 | my $nautilus = sub { "A", "tainted" . $TAINT, "B" }; |
09f04786 |
570 | test not tainted ((&$nautilus)[0]); |
571 | test tainted ((&$nautilus)[1]); |
572 | test not tainted ((&$nautilus)[2]); |
a1f49e72 |
573 | my @xyzzy = &$nautilus; |
09f04786 |
574 | test not tainted $xyzzy[0]; |
575 | test tainted $xyzzy[1]; |
576 | test not tainted $xyzzy[2]; |
a1f49e72 |
577 | my $red_october = sub { return "A", "tainted" . $TAINT, "B" }; |
09f04786 |
578 | test not tainted ((&$red_october)[0]); |
579 | test tainted ((&$red_october)[1]); |
580 | test not tainted ((&$red_october)[2]); |
a1f49e72 |
581 | my @corge = &$red_october; |
09f04786 |
582 | test not tainted $corge[0]; |
583 | test tainted $corge[1]; |
584 | test not tainted $corge[2]; |
a1f49e72 |
585 | } |
fb73857a |
586 | |
587 | # Test for system/library calls returning string data of dubious origin. |
588 | { |
589 | # No reliable %Config check for getpw* |
09f04786 |
590 | SKIP: { |
591 | skip "getpwent() is not available", 1 unless |
592 | eval { setpwent(); getpwent() }; |
593 | |
fb73857a |
594 | setpwent(); |
595 | my @getpwent = getpwent(); |
596 | die "getpwent: $!\n" unless (@getpwent); |
09f04786 |
597 | test ( not tainted $getpwent[0] |
2959b6e3 |
598 | and tainted $getpwent[1] |
fb73857a |
599 | and not tainted $getpwent[2] |
600 | and not tainted $getpwent[3] |
601 | and not tainted $getpwent[4] |
602 | and not tainted $getpwent[5] |
3972a534 |
603 | and tainted $getpwent[6] # ge?cos |
fb73857a |
604 | and not tainted $getpwent[7] |
3972a534 |
605 | and tainted $getpwent[8]); # shell |
fb73857a |
606 | endpwent(); |
fb73857a |
607 | } |
608 | |
09f04786 |
609 | SKIP: { |
610 | # pretty hard to imagine not |
611 | skip "readdir() is not available", 1 unless $Config{d_readdir}; |
612 | |
fb73857a |
613 | local(*D); |
614 | opendir(D, "op") or die "opendir: $!\n"; |
615 | my $readdir = readdir(D); |
09f04786 |
616 | test tainted $readdir; |
617 | closedir(D); |
fb73857a |
618 | } |
619 | |
09f04786 |
620 | SKIP: { |
621 | skip "readlink() or symlink() is not available" unless |
622 | $Config{d_readlink} && $Config{d_symlink}; |
623 | |
fb73857a |
624 | my $symlink = "sl$$"; |
625 | unlink($symlink); |
dc459aad |
626 | my $sl = "/something/naughty"; |
627 | # it has to be a real path on Mac OS |
628 | $sl = MacPerl::MakePath((MacPerl::Volumes())[0]) if $Is_MacOS; |
629 | symlink($sl, $symlink) or die "symlink: $!\n"; |
fb73857a |
630 | my $readlink = readlink($symlink); |
09f04786 |
631 | test tainted $readlink; |
fb73857a |
632 | unlink($symlink); |
fb73857a |
633 | } |
634 | } |
635 | |
636 | # test bitwise ops (regression bug) |
637 | { |
638 | my $why = "y"; |
639 | my $j = "x" | $why; |
09f04786 |
640 | test not tainted $j; |
fb73857a |
641 | $why = $TAINT."y"; |
642 | $j = "x" | $why; |
09f04786 |
643 | test tainted $j; |
fb73857a |
644 | } |
645 | |
48c036b1 |
646 | # test target of substitution (regression bug) |
647 | { |
648 | my $why = $TAINT."y"; |
649 | $why =~ s/y/z/; |
09f04786 |
650 | test tainted $why; |
48c036b1 |
651 | |
652 | my $z = "[z]"; |
653 | $why =~ s/$z/zee/; |
09f04786 |
654 | test tainted $why; |
48c036b1 |
655 | |
656 | $why =~ s/e/'-'.$$/ge; |
09f04786 |
657 | test tainted $why; |
48c036b1 |
658 | } |
d929ce6f |
659 | |
09f04786 |
660 | |
661 | SKIP: { |
662 | skip "no IPC::SysV", 2 unless $ipcsysv; |
663 | |
664 | # test shmread |
665 | SKIP: { |
666 | skip "shm*() not available", 1 unless $Config{d_shm}; |
667 | |
668 | no strict 'subs'; |
669 | my $sent = "foobar"; |
670 | my $rcvd; |
671 | my $size = 2000; |
672 | my $id = shmget(IPC_PRIVATE, $size, S_IRWXU); |
673 | |
674 | if (defined $id) { |
675 | if (shmwrite($id, $sent, 0, 60)) { |
676 | if (shmread($id, $rcvd, 0, 60)) { |
677 | substr($rcvd, index($rcvd, "\0")) = ''; |
678 | } else { |
679 | warn "# shmread failed: $!\n"; |
680 | } |
681 | } else { |
682 | warn "# shmwrite failed: $!\n"; |
683 | } |
684 | shmctl($id, IPC_RMID, 0) or warn "# shmctl failed: $!\n"; |
685 | } else { |
686 | warn "# shmget failed: $!\n"; |
687 | } |
688 | |
689 | skip "SysV shared memory operation failed", 1 unless |
690 | $rcvd eq $sent; |
691 | |
692 | test tainted $rcvd; |
c9f931b8 |
693 | } |
c2e66d9e |
694 | |
d929ce6f |
695 | |
09f04786 |
696 | # test msgrcv |
697 | SKIP: { |
698 | skip "msg*() not available", 1 unless $Config{d_msg}; |
41d6edb2 |
699 | |
b9d1c439 |
700 | no strict 'subs'; |
41d6edb2 |
701 | my $id = msgget(IPC_PRIVATE, IPC_CREAT | S_IRWXU); |
702 | |
703 | my $sent = "message"; |
704 | my $type_sent = 1234; |
705 | my $rcvd; |
706 | my $type_rcvd; |
707 | |
708 | if (defined $id) { |
ddc3217d |
709 | if (msgsnd($id, pack("l! a*", $type_sent, $sent), IPC_NOWAIT)) { |
710 | if (msgrcv($id, $rcvd, 60, 0, IPC_NOWAIT)) { |
41d6edb2 |
711 | ($type_rcvd, $rcvd) = unpack("l! a*", $rcvd); |
712 | } else { |
ddc3217d |
713 | warn "# msgrcv failed: $!\n"; |
41d6edb2 |
714 | } |
715 | } else { |
ddc3217d |
716 | warn "# msgsnd failed: $!\n"; |
41d6edb2 |
717 | } |
c2e66d9e |
718 | msgctl($id, IPC_RMID, 0) or warn "# msgctl failed: $!\n"; |
41d6edb2 |
719 | } else { |
720 | warn "# msgget failed\n"; |
721 | } |
722 | |
09f04786 |
723 | SKIP: { |
724 | skip "SysV message queue operation failed", 1 |
725 | unless $rcvd eq $sent && $type_sent == $type_rcvd; |
726 | |
727 | test tainted $rcvd; |
41d6edb2 |
728 | } |
41d6edb2 |
729 | } |
730 | } |
731 | |
3887d568 |
732 | { |
733 | # bug id 20001004.006 |
734 | |
dc459aad |
735 | open IN, $TEST or warn "$0: cannot read $TEST: $!" ; |
3887d568 |
736 | local $/; |
737 | my $a = <IN>; |
738 | my $b = <IN>; |
09f04786 |
739 | |
740 | ok tainted($a) && tainted($b) && !defined($b); |
741 | |
27c9684d |
742 | close IN; |
3887d568 |
743 | } |
27c9684d |
744 | |
745 | { |
746 | # bug id 20001004.007 |
747 | |
dc459aad |
748 | open IN, $TEST or warn "$0: cannot read $TEST: $!" ; |
27c9684d |
749 | my $a = <IN>; |
750 | |
751 | my $c = { a => 42, |
752 | b => $a }; |
09f04786 |
753 | |
754 | ok !tainted($c->{a}) && tainted($c->{b}); |
755 | |
27c9684d |
756 | |
757 | my $d = { a => $a, |
758 | b => 42 }; |
09f04786 |
759 | ok tainted($d->{a}) && !tainted($d->{b}); |
760 | |
27c9684d |
761 | |
762 | my $e = { a => 42, |
763 | b => { c => $a, d => 42 } }; |
09f04786 |
764 | ok !tainted($e->{a}) && |
765 | !tainted($e->{b}) && |
766 | tainted($e->{b}->{c}) && |
767 | !tainted($e->{b}->{d}); |
27c9684d |
768 | |
769 | close IN; |
770 | } |
771 | |
b94c04ac |
772 | { |
773 | # bug id 20010519.003 |
774 | |
248c32c0 |
775 | BEGIN { |
776 | use vars qw($has_fcntl); |
777 | eval { require Fcntl; import Fcntl; }; |
778 | unless ($@) { |
779 | $has_fcntl = 1; |
780 | } |
781 | } |
b94c04ac |
782 | |
09f04786 |
783 | SKIP: { |
784 | skip "no Fcntl", 18 unless $has_fcntl; |
785 | |
248c32c0 |
786 | my $evil = "foo" . $TAINT; |
787 | |
788 | eval { sysopen(my $ro, $evil, &O_RDONLY) }; |
09f04786 |
789 | test $@ !~ /^Insecure dependency/, $@; |
248c32c0 |
790 | |
791 | eval { sysopen(my $wo, $evil, &O_WRONLY) }; |
09f04786 |
792 | test $@ =~ /^Insecure dependency/, $@; |
248c32c0 |
793 | |
794 | eval { sysopen(my $rw, $evil, &O_RDWR) }; |
09f04786 |
795 | test $@ =~ /^Insecure dependency/, $@; |
248c32c0 |
796 | |
797 | eval { sysopen(my $ap, $evil, &O_APPEND) }; |
09f04786 |
798 | test $@ =~ /^Insecure dependency/, $@; |
248c32c0 |
799 | |
800 | eval { sysopen(my $cr, $evil, &O_CREAT) }; |
09f04786 |
801 | test $@ =~ /^Insecure dependency/, $@; |
248c32c0 |
802 | |
803 | eval { sysopen(my $tr, $evil, &O_TRUNC) }; |
09f04786 |
804 | test $@ =~ /^Insecure dependency/, $@; |
248c32c0 |
805 | |
09f04786 |
806 | eval { sysopen(my $ro, "foo", &O_RDONLY | $TAINT0) }; |
807 | test $@ !~ /^Insecure dependency/, $@; |
248c32c0 |
808 | |
09f04786 |
809 | eval { sysopen(my $wo, "foo", &O_WRONLY | $TAINT0) }; |
810 | test $@ =~ /^Insecure dependency/, $@; |
248c32c0 |
811 | |
09f04786 |
812 | eval { sysopen(my $rw, "foo", &O_RDWR | $TAINT0) }; |
813 | test $@ =~ /^Insecure dependency/, $@; |
248c32c0 |
814 | |
09f04786 |
815 | eval { sysopen(my $ap, "foo", &O_APPEND | $TAINT0) }; |
816 | test $@ =~ /^Insecure dependency/, $@; |
248c32c0 |
817 | |
09f04786 |
818 | eval { sysopen(my $cr, "foo", &O_CREAT | $TAINT0) }; |
819 | test $@ =~ /^Insecure dependency/, $@; |
248c32c0 |
820 | |
09f04786 |
821 | eval { sysopen(my $tr, "foo", &O_TRUNC | $TAINT0) }; |
822 | test $@ =~ /^Insecure dependency/, $@; |
248c32c0 |
823 | |
09f04786 |
824 | eval { sysopen(my $ro, "foo", &O_RDONLY, $TAINT0) }; |
825 | test $@ !~ /^Insecure dependency/, $@; |
248c32c0 |
826 | |
09f04786 |
827 | eval { sysopen(my $wo, "foo", &O_WRONLY, $TAINT0) }; |
828 | test $@ =~ /^Insecure dependency/, $@; |
248c32c0 |
829 | |
09f04786 |
830 | eval { sysopen(my $rw, "foo", &O_RDWR, $TAINT0) }; |
831 | test $@ =~ /^Insecure dependency/, $@; |
248c32c0 |
832 | |
09f04786 |
833 | eval { sysopen(my $ap, "foo", &O_APPEND, $TAINT0) }; |
834 | test $@ =~ /^Insecure dependency/, $@; |
248c32c0 |
835 | |
09f04786 |
836 | eval { sysopen(my $cr, "foo", &O_CREAT, $TAINT0) }; |
837 | test $@ =~ /^Insecure dependency/, $@; |
248c32c0 |
838 | |
09f04786 |
839 | eval { sysopen(my $tr, "foo", &O_TRUNC, $TAINT0) }; |
840 | test $@ =~ /^Insecure dependency/, $@; |
248c32c0 |
841 | |
842 | unlink("foo"); # not unlink($evil), because that would fail... |
843 | } |
b94c04ac |
844 | } |
845 | |
65811bc3 |
846 | { |
847 | # bug 20010526.004 |
848 | |
849 | use warnings; |
850 | |
09f04786 |
851 | my $saw_warning = 0; |
852 | local $SIG{__WARN__} = sub { $saw_warning = 1 }; |
65811bc3 |
853 | |
854 | sub fmi { |
855 | my $divnum = shift()/1; |
856 | sprintf("%1.1f\n", $divnum); |
857 | } |
858 | |
859 | fmi(21 . $TAINT); |
860 | fmi(37); |
861 | fmi(248); |
862 | |
09f04786 |
863 | test !$saw_warning; |
65811bc3 |
864 | } |
865 | |
9e1b5a4e |
866 | |
867 | { |
868 | # Bug ID 20010730.010 |
869 | |
870 | my $i = 0; |
871 | |
872 | sub Tie::TIESCALAR { |
873 | my $class = shift; |
874 | my $arg = shift; |
875 | |
876 | bless \$arg => $class; |
877 | } |
878 | |
879 | sub Tie::FETCH { |
880 | $i ++; |
881 | ${$_ [0]} |
882 | } |
883 | |
884 | |
885 | package main; |
886 | |
887 | my $bar = "The Big Bright Green Pleasure Machine"; |
888 | taint_these $bar; |
889 | tie my ($foo), Tie => $bar; |
890 | |
891 | my $baz = $foo; |
892 | |
09f04786 |
893 | ok $i == 1; |
9e1b5a4e |
894 | } |
895 | |
8852b6d2 |
896 | { |
897 | # Check that all environment variables are tainted. |
898 | my @untainted; |
899 | while (my ($k, $v) = each %ENV) { |
900 | if (!tainted($v) && |
eb25aaf6 |
901 | # These we have explicitly untainted or set earlier. |
902 | $k !~ /^(BASH_ENV|CDPATH|ENV|IFS|PATH|PERL_CORE|TEMP|TERM|TMP)$/) { |
8852b6d2 |
903 | push @untainted, "# '$k' = '$v'\n"; |
904 | } |
905 | } |
09f04786 |
906 | test @untainted == 0, "untainted:\n @untainted"; |
8852b6d2 |
907 | } |
9e1b5a4e |
908 | |
909 | |
9aa05f58 |
910 | ok( ${^TAINT} == 1, '$^TAINT is on' ); |
7c36658b |
911 | |
912 | eval { ${^TAINT} = 0 }; |
913 | ok( ${^TAINT}, '$^TAINT is not assignable' ); |
914 | ok( $@ =~ /^Modification of a read-only value attempted/, |
c212f17f |
915 | 'Assigning to ${^TAINT} fails' ); |
7c36658b |
916 | |
e08e52cf |
917 | { |
918 | # bug 20011111.105 |
919 | |
920 | my $re1 = qr/x$TAINT/; |
09f04786 |
921 | test tainted $re1; |
e08e52cf |
922 | |
923 | my $re2 = qr/^$re1\z/; |
09f04786 |
924 | test tainted $re2; |
e08e52cf |
925 | |
926 | my $re3 = "$re2"; |
09f04786 |
927 | test tainted $re3; |
e08e52cf |
928 | } |
52a55424 |
929 | |
09f04786 |
930 | SKIP: { |
931 | skip "system {} has different semantics on Win32", 1 if $Is_MSWin32; |
932 | |
52a55424 |
933 | # bug 20010221.005 |
934 | local $ENV{PATH} .= $TAINT; |
935 | eval { system { "echo" } "/arg0", "arg1" }; |
09f04786 |
936 | test $@ =~ /^Insecure \$ENV/; |
52a55424 |
937 | } |
09f04786 |
938 | |
939 | TODO: { |
940 | todo_skip 'tainted %ENV warning occludes tainted arguments warning', 22 |
941 | if $Is_VMS; |
942 | |
943 | # bug 20020208.005 plus some single arg exec/system extras |
06bd1802 |
944 | my $err = qr/^Insecure dependency/ ; |
09f04786 |
945 | test !eval { exec $TAINT, $TAINT }, 'exec'; |
946 | test $@ =~ $err, $@; |
947 | test !eval { exec $TAINT $TAINT }, 'exec'; |
948 | test $@ =~ $err, $@; |
949 | test !eval { exec $TAINT $TAINT, $TAINT }, 'exec'; |
950 | test $@ =~ $err, $@; |
951 | test !eval { exec $TAINT 'notaint' }, 'exec'; |
952 | test $@ =~ $err, $@; |
953 | test !eval { exec {'notaint'} $TAINT }, 'exec'; |
954 | test $@ =~ $err, $@; |
955 | |
956 | test !eval { system $TAINT, $TAINT }, 'system'; |
957 | test $@ =~ $err, $@; |
958 | test !eval { system $TAINT $TAINT }, 'system'; |
959 | test $@ =~ $err, $@; |
960 | test !eval { system $TAINT $TAINT, $TAINT }, 'system'; |
961 | test $@ =~ $err, $@; |
962 | test !eval { system $TAINT 'notaint' }, 'system'; |
963 | test $@ =~ $err, $@; |
964 | test !eval { system {'notaint'} $TAINT }, 'system'; |
965 | test $@ =~ $err, $@; |
966 | |
967 | eval { |
968 | no warnings; |
969 | system("lskdfj does not exist","with","args"); |
970 | }; |
971 | test !$@; |
972 | |
973 | SKIP: { |
974 | skip "no exec() on MacOS Classic" if $Is_MacOS; |
975 | |
976 | eval { |
977 | no warnings; |
978 | exec("lskdfj does not exist","with","args"); |
979 | }; |
980 | test !$@; |
63c6dcc1 |
981 | } |
6c8794e1 |
982 | |
983 | # If you add tests here update also the above skip block for VMS. |
bbd7eb8a |
984 | } |
a8c7c11a |
985 | |
986 | { |
987 | # [ID 20020704.001] taint propagation failure |
988 | use re 'taint'; |
989 | $TAINT =~ /(.*)/; |
09f04786 |
990 | test tainted(my $foo = $1); |
a8c7c11a |
991 | } |
7b756e0a |
992 | |
993 | { |
c038024b |
994 | # [perl #24291] this used to dump core |
995 | our %nonmagicalenv = ( PATH => "util" ); |
7b756e0a |
996 | local *ENV = \%nonmagicalenv; |
997 | eval { system("lskdfj"); }; |
09f04786 |
998 | test $@ =~ /^%ENV is aliased to another variable while running with -T switch/; |
c038024b |
999 | local *ENV = *nonmagicalenv; |
7b756e0a |
1000 | eval { system("lskdfj"); }; |
09f04786 |
1001 | test $@ =~ /^%ENV is aliased to %nonmagicalenv while running with -T switch/; |
7b756e0a |
1002 | } |
0b4182de |
1003 | { |
1004 | # [perl #24248] |
1005 | $TAINT =~ /(.*)/; |
09f04786 |
1006 | test !tainted($1); |
0b4182de |
1007 | my $notaint = $1; |
09f04786 |
1008 | test !tainted($notaint); |
0b4182de |
1009 | |
1010 | my $l; |
1011 | $notaint =~ /($notaint)/; |
1012 | $l = $1; |
09f04786 |
1013 | test !tainted($1); |
1014 | test !tainted($l); |
0b4182de |
1015 | $notaint =~ /($TAINT)/; |
1016 | $l = $1; |
09f04786 |
1017 | test tainted($1); |
1018 | test tainted($l); |
0b4182de |
1019 | |
1020 | $TAINT =~ /($notaint)/; |
1021 | $l = $1; |
09f04786 |
1022 | test !tainted($1); |
1023 | test !tainted($l); |
0b4182de |
1024 | $TAINT =~ /($TAINT)/; |
1025 | $l = $1; |
09f04786 |
1026 | test tainted($1); |
1027 | test tainted($l); |
0b4182de |
1028 | |
1029 | my $r; |
1030 | ($r = $TAINT) =~ /($notaint)/; |
09f04786 |
1031 | test !tainted($1); |
0b4182de |
1032 | ($r = $TAINT) =~ /($TAINT)/; |
09f04786 |
1033 | test tainted($1); |
3511154c |
1034 | |
1035 | # [perl #24674] |
1036 | # accessing $^O shoudn't taint it as a side-effect; |
1037 | # assigning tainted data to it is now an error |
1038 | |
09f04786 |
1039 | test !tainted($^O); |
3511154c |
1040 | if (!$^X) { } elsif ($^O eq 'bar') { } |
09f04786 |
1041 | test !tainted($^O); |
3511154c |
1042 | eval '$^O = $^X'; |
09f04786 |
1043 | test $@ =~ /Insecure dependency in/; |
0b4182de |
1044 | } |
23634c10 |
1045 | |
1046 | EFFECTIVELY_CONSTANTS: { |
1047 | my $tainted_number = 12 + $TAINT0; |
09f04786 |
1048 | test tainted( $tainted_number ); |
23634c10 |
1049 | |
1050 | # Even though it's always 0, it's still tainted |
1051 | my $tainted_product = $tainted_number * 0; |
09f04786 |
1052 | test tainted( $tainted_product ); |
1053 | test $tainted_product == 0; |
23634c10 |
1054 | } |
1055 | |
1056 | TERNARY_CONDITIONALS: { |
1057 | my $tainted_true = $TAINT . "blah blah blah"; |
1058 | my $tainted_false = $TAINT0; |
09f04786 |
1059 | test tainted( $tainted_true ); |
1060 | test tainted( $tainted_false ); |
23634c10 |
1061 | |
1062 | my $result = $tainted_true ? "True" : "False"; |
09f04786 |
1063 | test $result eq "True"; |
1064 | test !tainted( $result ); |
23634c10 |
1065 | |
1066 | $result = $tainted_false ? "True" : "False"; |
09f04786 |
1067 | test $result eq "False"; |
1068 | test !tainted( $result ); |
23634c10 |
1069 | |
1070 | my $untainted_whatever = "The Fabulous Johnny Cash"; |
1071 | my $tainted_whatever = "Soft Cell" . $TAINT; |
1072 | |
1073 | $result = $tainted_true ? $tainted_whatever : $untainted_whatever; |
09f04786 |
1074 | test $result eq "Soft Cell"; |
1075 | test tainted( $result ); |
23634c10 |
1076 | |
1077 | $result = $tainted_false ? $tainted_whatever : $untainted_whatever; |
09f04786 |
1078 | test $result eq "The Fabulous Johnny Cash"; |
1079 | test !tainted( $result ); |
23634c10 |
1080 | } |
65814f21 |
1081 | |
1082 | { |
1083 | # rt.perl.org 5900 $1 remains tainted if... |
1084 | # 1) The regular expression contains a scalar variable AND |
1085 | # 2) The regular expression appears in an elsif clause |
1086 | |
1087 | my $foo = "abcdefghi" . $TAINT; |
1088 | |
1089 | my $valid_chars = 'a-z'; |
1090 | if ( $foo eq '' ) { |
1091 | } |
1092 | elsif ( $foo =~ /([$valid_chars]+)/o ) { |
1093 | test not tainted $1; |
1094 | } |
1095 | |
1096 | if ( $foo eq '' ) { |
1097 | } |
1098 | elsif ( my @bar = $foo =~ /([$valid_chars]+)/o ) { |
1099 | test not any_tainted @bar; |
1100 | } |
1101 | } |
0a9c116b |
1102 | |
1103 | # at scope exit, a restored localised value should have its old |
1104 | # taint status, not the taint status of the current statement |
1105 | |
1106 | { |
1107 | our $x99 = $^X; |
1108 | test tainted $x99; |
1109 | |
1110 | $x99 = ''; |
1111 | test not tainted $x99; |
1112 | |
1113 | my $c = do { local $x99; $^X }; |
1114 | test not tainted $x99; |
1115 | } |
1116 | { |
1117 | our $x99 = $^X; |
1118 | test tainted $x99; |
1119 | |
1120 | my $c = do { local $x99; '' }; |
1121 | test tainted $x99; |
1122 | } |
1123 | |
27cc343c |
1124 | # an mg_get of a tainted value during localization shouldn't taint the |
1125 | # statement |
1126 | |
1127 | { |
1128 | eval { local $0, eval '1' }; |
1129 | test $@ eq ''; |
1130 | } |
e26a4975 |
1131 | |
1132 | # [perl #8262] //g loops infinitely on tainted data |
1133 | |
1134 | { |
1135 | my @a; |
c7dd0d64 |
1136 | local $::TODO = 1; |
e26a4975 |
1137 | $a[0] = $^X; |
1138 | my $i = 0; |
1139 | while($a[0]=~ m/(.)/g ) { |
1140 | last if $i++ > 10000; |
1141 | } |
86f12da2 |
1142 | cmp_ok $i, '<', 10000, "infinite m//g"; |
e26a4975 |
1143 | } |
0aa395f8 |
1144 | |
1145 | SKIP: |
1146 | { |
1147 | my $got_dualvar; |
1148 | eval 'use Scalar::Util "dualvar"; $got_dualvar++'; |
1149 | skip "No Scalar::Util::dualvar" unless $got_dualvar; |
1150 | my $a = Scalar::Util::dualvar(3, $^X); |
1151 | my $b = $a + 5; |
1152 | is ($b, 8, "Arithmetic on tainted dualvars works"); |
1153 | } |
f27977c3 |
1154 | |
1155 | # opening '|-' should not trigger $ENV{PATH} check |
1156 | |
1157 | { |
1158 | SKIP: { |
1159 | skip "fork() is not available", 3 unless $Config{'d_fork'}; |
b4fda7a3 |
1160 | skip "opening |- is not stable on threaded OpenBSD with taint", 3 |
1161 | if $Config{useithreads} && $Is_OpenBSD; |
f27977c3 |
1162 | |
1163 | $ENV{'PATH'} = $TAINT; |
1164 | local $SIG{'PIPE'} = 'IGNORE'; |
1165 | eval { |
1166 | my $pid = open my $pipe, '|-'; |
1167 | if (!defined $pid) { |
1168 | die "open failed: $!"; |
1169 | } |
1170 | if (!$pid) { |
1171 | kill 'KILL', $$; # child suicide |
1172 | } |
1173 | close $pipe; |
1174 | }; |
1175 | test $@ !~ /Insecure \$ENV/, 'fork triggers %ENV check'; |
1176 | test $@ eq '', 'pipe/fork/open/close failed'; |
1177 | eval { |
1178 | open my $pipe, "|$Invoke_Perl -e 1"; |
1179 | close $pipe; |
1180 | }; |
1181 | test $@ =~ /Insecure \$ENV/, 'popen neglects %ENV check'; |
1182 | } |
1183 | } |
5d121f7f |
1184 | |
1185 | { |
1186 | package AUTOLOAD_TAINT; |
1187 | sub AUTOLOAD { |
1188 | our $AUTOLOAD; |
1189 | return if $AUTOLOAD =~ /DESTROY/; |
1190 | if ($AUTOLOAD =~ /untainted/) { |
1191 | main::ok(!main::tainted($AUTOLOAD), '$AUTOLOAD can be untainted'); |
1192 | } else { |
1193 | main::ok(main::tainted($AUTOLOAD), '$AUTOLOAD can be tainted'); |
1194 | } |
1195 | } |
1196 | |
1197 | package main; |
1198 | my $o = bless [], 'AUTOLOAD_TAINT'; |
1199 | $o->$TAINT; |
1200 | $o->untainted; |
1201 | } |
1202 | |
20ee07fb |
1203 | { |
1204 | # tests for tainted format in s?printf |
1205 | eval { printf($TAINT . "# %s\n", "foo") }; |
1206 | like($@, qr/^Insecure dependency in printf/, q/printf doesn't like tainted formats/); |
1207 | eval { printf("# %s\n", $TAINT . "foo") }; |
1208 | ok(!$@, q/printf accepts other tainted args/); |
1209 | eval { sprintf($TAINT . "# %s\n", "foo") }; |
1210 | like($@, qr/^Insecure dependency in sprintf/, q/sprintf doesn't like tainted formats/); |
1211 | eval { sprintf("# %s\n", $TAINT . "foo") }; |
1212 | ok(!$@, q/sprintf accepts other tainted args/); |
1213 | } |
085bde85 |
1214 | |
1215 | { |
1216 | # 40708 |
1217 | my $n = 7e9; |
1218 | 8e9 - $n; |
1219 | |
1220 | my $val = $n; |
1221 | is ($val, '7000000000', 'Assignment to untainted variable'); |
1222 | $val = $TAINT; |
1223 | $val = $n; |
1224 | is ($val, '7000000000', 'Assignment to tainted variable'); |
1225 | } |
5e500fc8 |
1226 | |
1227 | { |
5e500fc8 |
1228 | my $val = 0; |
1229 | my $tainted = '1' . $TAINT; |
1230 | eval '$val = eval $tainted;'; |
1231 | is ($val, 0, "eval doesn't like tainted strings"); |
1232 | like ($@, qr/^Insecure dependency in eval/); |
1233 | |
abb7fb96 |
1234 | # Rather nice code to get a tainted undef by from Rick Delaney |
1235 | open FH, "test.pl" or die $!; |
af2d3def |
1236 | seek FH, 0, 2 or die $!; |
1237 | $tainted = <FH>; |
5e500fc8 |
1238 | |
1239 | eval 'eval $tainted'; |
1240 | like ($@, qr/^Insecure dependency in eval/); |
1241 | } |
beeaa6fd |
1242 | |
1243 | # This may bomb out with the alarm signal so keep it last |
1244 | SKIP: { |
1245 | skip "No alarm()" unless $Config{d_alarm}; |
1246 | # Test from RT #41831] |
1247 | # [PATCH] Bug & fix: hang when using study + taint mode (perl 5.6.1, 5.8.x) |
1248 | |
1249 | my $DATA = <<'END' . $TAINT; |
1250 | line1 is here |
1251 | line2 is here |
1252 | line3 is here |
1253 | line4 is here |
1254 | |
1255 | END |
1256 | |
1257 | #study $DATA; |
1258 | |
1259 | ## don't set $SIG{ALRM}, since we'd never get to a user-level handler as |
1260 | ## perl is stuck in a regexp infinite loop! |
1261 | |
1262 | alarm(10); |
1263 | |
1264 | if ($DATA =~ /^line2.*line4/m) { |
1265 | fail("Should not be a match") |
1266 | } else { |
1267 | pass("Match on tainted multiline data should fail promptly"); |
1268 | } |
1269 | |
1270 | alarm(0); |
1271 | } |
1272 | __END__ |
1273 | # Keep the previous test last |