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 MS |
19 | BEGIN { require './test.pl'; } |
20 | plan tests => 236; | |
7c36658b MS |
21 | |
22 | ||
0ecd3ba2 MG |
23 | $| = 1; |
24 | ||
c9f931b8 JH |
25 | use vars qw($ipcsysv); # did we manage to load IPC::SysV? |
26 | ||
3eeba6fb CB |
27 | BEGIN { |
28 | if ($^O eq 'VMS' && !defined($Config{d_setenv})) { | |
29 | $ENV{PATH} = $ENV{PATH}; | |
30 | $ENV{TERM} = $ENV{TERM} ne ''? $ENV{TERM} : 'dummy'; | |
31 | } | |
be3174d2 GS |
32 | if ($Config{'extensions'} =~ /\bIPC\/SysV\b/ |
33 | && ($Config{d_shm} || $Config{d_msg})) { | |
c9f931b8 JH |
34 | eval { require IPC::SysV }; |
35 | unless ($@) { | |
36 | $ipcsysv++; | |
ddc3217d | 37 | IPC::SysV->import(qw(IPC_PRIVATE IPC_RMID IPC_CREAT S_IRWXU IPC_NOWAIT)); |
c9f931b8 | 38 | } |
b9d1c439 | 39 | } |
3eeba6fb CB |
40 | } |
41 | ||
09f04786 MS |
42 | my $Is_MacOS = $^O eq 'MacOS'; |
43 | my $Is_VMS = $^O eq 'VMS'; | |
44 | my $Is_MSWin32 = $^O eq 'MSWin32'; | |
45 | my $Is_NetWare = $^O eq 'NetWare'; | |
46 | my $Is_Dos = $^O eq 'dos'; | |
47 | my $Is_Cygwin = $^O eq 'cygwin'; | |
48 | my $Invoke_Perl = $Is_VMS ? 'MCR Sys$Disk:[]Perl.' : | |
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 MS |
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 $_ } | |
94 | 1; | |
95 | } | |
96 | ||
09f04786 MS |
97 | |
98 | sub test ($;$) { | |
99 | my($ok, $diag) = @_; | |
100 | ||
101 | my $curr_test = curr_test(); | |
102 | ||
103 | if ($ok) { | |
104 | print "ok $curr_test\n"; | |
1e422769 | 105 | } else { |
09f04786 MS |
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 MS |
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 JH |
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 | ||
7bac28a0 | 137 | $ENV{PATH} = ''; |
c90c0ff4 | 138 | delete @ENV{@MoreEnv}; |
7bac28a0 | 139 | $ENV{TERM} = 'dumb'; |
140 | ||
8852b6d2 | 141 | if ($Is_Cygwin && ! -f 'cygwin1.dll') { |
343d3f38 JH |
142 | system("/usr/bin/cp /usr/bin/cygwin1.dll .") && |
143 | die "$0: failed to cp cygwin1.dll: $!\n"; | |
cef9cd04 YST |
144 | eval q{ |
145 | END { unlink "cygwin1.dll" } | |
146 | }; | |
147 | } | |
148 | ||
149 | if ($Is_Cygwin && ! -f 'cygcrypt-0.dll' && -f '/usr/bin/cygcrypt-0.dll') { | |
150 | system("/usr/bin/cp /usr/bin/cygcrypt-0.dll .") && | |
151 | die "$0: failed to cp cygcrypt-0.dll: $!\n"; | |
152 | eval q{ | |
153 | END { unlink "cygcrypt-0.dll" } | |
154 | }; | |
343d3f38 JH |
155 | } |
156 | ||
09f04786 MS |
157 | test eval { `$echo 1` } eq "1\n"; |
158 | ||
159 | SKIP: { | |
160 | skip "Environment tainting tests skipped", 4 | |
161 | if $Is_MSWin32 || $Is_NetWare || $Is_VMS || $Is_Dos || $Is_MacOS; | |
7bac28a0 | 162 | |
7bac28a0 | 163 | my @vars = ('PATH', @MoreEnv); |
164 | while (my $v = $vars[0]) { | |
165 | local $ENV{$v} = $TAINT; | |
166 | last if eval { `$echo 1` }; | |
167 | last unless $@ =~ /^Insecure \$ENV{$v}/; | |
168 | shift @vars; | |
169 | } | |
09f04786 | 170 | test !@vars, "@vars"; |
c90c0ff4 | 171 | |
172 | # tainted $TERM is unsafe only if it contains metachars | |
173 | local $ENV{TERM}; | |
174 | $ENV{TERM} = 'e=mc2'; | |
09f04786 | 175 | test eval { `$echo 1` } eq "1\n"; |
c90c0ff4 | 176 | $ENV{TERM} = 'e=mc2' . $TAINT; |
09f04786 MS |
177 | test !eval { `$echo 1` }; |
178 | test $@ =~ /^Insecure \$ENV{TERM}/, $@; | |
5aabfad6 | 179 | } |
7bac28a0 | 180 | |
9607fc9c | 181 | my $tmp; |
2986a63f | 182 | if ($^O eq 'os2' || $^O eq 'amigaos' || $Is_MSWin32 || $Is_NetWare || $Is_Dos) { |
48c036b1 GS |
183 | print "# all directories are writeable\n"; |
184 | } | |
185 | else { | |
9607fc9c | 186 | $tmp = (grep { defined and -d and (stat _)[2] & 2 } |
099f76bb | 187 | qw(sys$scratch /tmp /var/tmp /usr/tmp), |
9607fc9c | 188 | @ENV{qw(TMP TEMP)})[0] |
189 | or print "# can't find world-writeable directory to test PATH\n"; | |
190 | } | |
191 | ||
09f04786 MS |
192 | SKIP: { |
193 | skip "all directories are writeable", 2 unless $tmp; | |
194 | ||
7bac28a0 | 195 | local $ENV{PATH} = $tmp; |
09f04786 MS |
196 | test !eval { `$echo 1` }; |
197 | test $@ =~ /^Insecure directory in \$ENV{PATH}/, $@; | |
1e422769 | 198 | } |
199 | ||
09f04786 MS |
200 | SKIP: { |
201 | skip "This is not VMS", 4 unless $Is_VMS; | |
202 | ||
1e422769 | 203 | $ENV{'DCL$PATH'} = $TAINT; |
09f04786 MS |
204 | test eval { `$echo 1` } eq ''; |
205 | test $@ =~ /^Insecure \$ENV{DCL\$PATH}/, $@; | |
206 | SKIP: { | |
207 | skip q[can't find world-writeable directory to test DCL$PATH], 2 | |
208 | if $tmp; | |
209 | ||
9607fc9c | 210 | $ENV{'DCL$PATH'} = $tmp; |
09f04786 MS |
211 | test eval { `$echo 1` } eq ''; |
212 | test $@ =~ /^Insecure directory in \$ENV{DCL\$PATH}/, $@; | |
9607fc9c | 213 | } |
1e422769 | 214 | $ENV{'DCL$PATH'} = ''; |
215 | } | |
1e422769 | 216 | } |
217 | ||
218 | # Let's see that we can taint and untaint as needed. | |
219 | { | |
220 | my $foo = $TAINT; | |
09f04786 | 221 | test tainted $foo; |
9607fc9c | 222 | |
223 | # That was a sanity check. If it failed, stop the insanity! | |
224 | die "Taint checks don't seem to be enabled" unless tainted $foo; | |
1e422769 | 225 | |
226 | $foo = "foo"; | |
09f04786 | 227 | test not tainted $foo; |
1e422769 | 228 | |
229 | taint_these($foo); | |
09f04786 | 230 | test tainted $foo; |
1e422769 | 231 | |
232 | my @list = 1..10; | |
09f04786 | 233 | test not any_tainted @list; |
1e422769 | 234 | taint_these @list[1,3,5,7,9]; |
09f04786 MS |
235 | test any_tainted @list; |
236 | test all_tainted @list[1,3,5,7,9]; | |
237 | test not any_tainted @list[0,2,4,6,8]; | |
1e422769 | 238 | |
239 | ($foo) = $foo =~ /(.+)/; | |
09f04786 | 240 | test not tainted $foo; |
1e422769 | 241 | |
242 | $foo = $1 if ('bar' . $TAINT) =~ /(.+)/; | |
09f04786 MS |
243 | test not tainted $foo; |
244 | test $foo eq 'bar'; | |
1e422769 | 245 | |
b3eb6a9b GS |
246 | { |
247 | use re 'taint'; | |
248 | ||
249 | ($foo) = ('bar' . $TAINT) =~ /(.+)/; | |
09f04786 MS |
250 | test tainted $foo; |
251 | test $foo eq 'bar'; | |
b3eb6a9b GS |
252 | |
253 | $foo = $1 if ('bar' . $TAINT) =~ /(.+)/; | |
09f04786 MS |
254 | test tainted $foo; |
255 | test $foo eq 'bar'; | |
b3eb6a9b GS |
256 | } |
257 | ||
258 | $foo = $1 if 'bar' =~ /(.+)$TAINT/; | |
09f04786 MS |
259 | test tainted $foo; |
260 | test $foo eq 'bar'; | |
48c036b1 | 261 | |
1e422769 | 262 | my $pi = 4 * atan2(1,1) + $TAINT0; |
09f04786 | 263 | test tainted $pi; |
1e422769 | 264 | |
265 | ($pi) = $pi =~ /(\d+\.\d+)/; | |
09f04786 MS |
266 | test not tainted $pi; |
267 | test sprintf("%.5f", $pi) eq '3.14159'; | |
1e422769 | 268 | } |
269 | ||
270 | # How about command-line arguments? The problem is that we don't | |
271 | # always get some, so we'll run another process with some. | |
dc459aad JH |
272 | SKIP: { |
273 | my $arg = catfile(curdir(), "arg$$"); | |
1e422769 | 274 | open PROG, "> $arg" or die "Can't create $arg: $!"; |
275 | print PROG q{ | |
276 | eval { join('', @ARGV), kill 0 }; | |
277 | exit 0 if $@ =~ /^Insecure dependency/; | |
278 | print "# Oops: \$@ was [$@]\n"; | |
279 | exit 1; | |
280 | }; | |
281 | close PROG; | |
282 | print `$Invoke_Perl "-T" $arg and some suspect arguments`; | |
09f04786 | 283 | test !$?, "Exited with status $?"; |
1e422769 | 284 | unlink $arg; |
285 | } | |
286 | ||
287 | # Reading from a file should be tainted | |
288 | { | |
09f04786 | 289 | test open(FILE, $TEST), "Couldn't open '$TEST': $!"; |
1e422769 | 290 | |
291 | my $block; | |
292 | sysread(FILE, $block, 100); | |
9607fc9c | 293 | my $line = <FILE>; |
1e422769 | 294 | close FILE; |
09f04786 MS |
295 | test tainted $block; |
296 | test tainted $line; | |
1e422769 | 297 | } |
298 | ||
c90c0ff4 | 299 | # Globs should be forbidden, except under VMS, |
300 | # which doesn't spawn an external program. | |
09f04786 MS |
301 | SKIP: { |
302 | skip "globs should be forbidden", 2 if 1 or $Is_VMS; | |
303 | ||
7bac28a0 | 304 | my @globs = eval { <*> }; |
09f04786 | 305 | test @globs == 0 && $@ =~ /^Insecure dependency/; |
1e422769 | 306 | |
7bac28a0 | 307 | @globs = eval { glob '*' }; |
09f04786 | 308 | test @globs == 0 && $@ =~ /^Insecure dependency/; |
1e422769 | 309 | } |
310 | ||
311 | # Output of commands should be tainted | |
312 | { | |
313 | my $foo = `$echo abc`; | |
09f04786 | 314 | test tainted $foo; |
1e422769 | 315 | } |
316 | ||
317 | # Certain system variables should be tainted | |
318 | { | |
09f04786 | 319 | test all_tainted $^X, $0; |
1e422769 | 320 | } |
321 | ||
322 | # Results of matching should all be untainted | |
323 | { | |
324 | my $foo = "abcdefghi" . $TAINT; | |
09f04786 | 325 | test tainted $foo; |
1e422769 | 326 | |
327 | $foo =~ /def/; | |
09f04786 | 328 | test not any_tainted $`, $&, $'; |
1e422769 | 329 | |
330 | $foo =~ /(...)(...)(...)/; | |
09f04786 | 331 | test not any_tainted $1, $2, $3, $+; |
1e422769 | 332 | |
333 | my @bar = $foo =~ /(...)(...)(...)/; | |
09f04786 | 334 | test not any_tainted @bar; |
1e422769 | 335 | |
09f04786 MS |
336 | test tainted $foo; # $foo should still be tainted! |
337 | test $foo eq "abcdefghi"; | |
1e422769 | 338 | } |
339 | ||
340 | # Operations which affect files can't use tainted data. | |
341 | { | |
09f04786 MS |
342 | test !eval { chmod 0, $TAINT }, 'chmod'; |
343 | test $@ =~ /^Insecure dependency/, $@; | |
1e422769 | 344 | |
9607fc9c | 345 | # There is no feature test in $Config{} for truncate, |
346 | # so we allow for the possibility that it's missing. | |
09f04786 MS |
347 | test !eval { truncate 'NoSuChFiLe', $TAINT0 }, 'truncate'; |
348 | test $@ =~ /^(?:Insecure dependency|truncate not implemented)/, $@; | |
1e422769 | 349 | |
09f04786 MS |
350 | test !eval { rename '', $TAINT }, 'rename'; |
351 | test $@ =~ /^Insecure dependency/, $@; | |
1e422769 | 352 | |
09f04786 MS |
353 | test !eval { unlink $TAINT }, 'unlink'; |
354 | test $@ =~ /^Insecure dependency/, $@; | |
9607fc9c | 355 | |
09f04786 MS |
356 | test !eval { utime $TAINT }, 'utime'; |
357 | test $@ =~ /^Insecure dependency/, $@; | |
48c036b1 | 358 | |
09f04786 MS |
359 | SKIP: { |
360 | skip "chown() is not available", 2 unless $Config{d_chown}; | |
1e422769 | 361 | |
09f04786 MS |
362 | test !eval { chown -1, -1, $TAINT }, 'chown'; |
363 | test $@ =~ /^Insecure dependency/, $@; | |
1e422769 | 364 | } |
365 | ||
09f04786 MS |
366 | SKIP: { |
367 | skip "link() is not available", 2 unless $Config{d_link}; | |
368 | ||
369 | test !eval { link $TAINT, '' }, 'link'; | |
370 | test $@ =~ /^Insecure dependency/, $@; | |
1e422769 | 371 | } |
09f04786 MS |
372 | |
373 | SKIP: { | |
374 | skip "symlink() is not available", 2 unless $Config{d_symlink}; | |
375 | ||
376 | test !eval { symlink $TAINT, '' }, 'symlink'; | |
377 | test $@ =~ /^Insecure dependency/, $@; | |
1e422769 | 378 | } |
379 | } | |
380 | ||
381 | # Operations which affect directories can't use tainted data. | |
382 | { | |
09f04786 MS |
383 | test !eval { mkdir "foo".$TAINT, 0755.$TAINT0 }, 'mkdir'; |
384 | test $@ =~ /^Insecure dependency/, $@; | |
1e422769 | 385 | |
09f04786 MS |
386 | test !eval { rmdir $TAINT }, 'rmdir'; |
387 | test $@ =~ /^Insecure dependency/, $@; | |
9607fc9c | 388 | |
09f04786 MS |
389 | test !eval { chdir "foo".$TAINT }, 'chdir'; |
390 | test $@ =~ /^Insecure dependency/, $@; | |
48c036b1 | 391 | |
09f04786 MS |
392 | SKIP: { |
393 | skip "chroot() is not available", 2 unless $Config{d_chroot}; | |
394 | ||
395 | test !eval { chroot $TAINT }, 'chroot'; | |
396 | test $@ =~ /^Insecure dependency/, $@; | |
1e422769 | 397 | } |
398 | } | |
399 | ||
400 | # Some operations using files can't use tainted data. | |
401 | { | |
402 | my $foo = "imaginary library" . $TAINT; | |
09f04786 MS |
403 | test !eval { require $foo }, 'require'; |
404 | test $@ =~ /^Insecure dependency/, $@; | |
1e422769 | 405 | |
406 | my $filename = "./taintB$$"; # NB: $filename isn't tainted! | |
407 | END { unlink $filename if defined $filename } | |
408 | $foo = $filename . $TAINT; | |
409 | unlink $filename; # in any case | |
410 | ||
09f04786 MS |
411 | test !eval { open FOO, $foo }, 'open for read'; |
412 | test $@ eq '', $@; # NB: This should be allowed | |
9d116dd7 JH |
413 | |
414 | # Try first new style but allow also old style. | |
327ccce1 YST |
415 | # We do not want the whole taint.t to fail |
416 | # just because Errno possibly failing. | |
09f04786 | 417 | test eval('$!{ENOENT}') || |
61ae2fbf JH |
418 | $! == 2 || # File not found |
419 | ($Is_Dos && $! == 22) || | |
420 | ($^O eq 'mint' && $! == 33); | |
1e422769 | 421 | |
09f04786 MS |
422 | test !eval { open FOO, "> $foo" }, 'open for write'; |
423 | test $@ =~ /^Insecure dependency/, $@; | |
1e422769 | 424 | } |
425 | ||
426 | # Commands to the system can't use tainted data | |
427 | { | |
428 | my $foo = $TAINT; | |
429 | ||
09f04786 MS |
430 | SKIP: { |
431 | skip "open('|') is not available", 4 if $^O eq 'amigaos'; | |
432 | ||
433 | test !eval { open FOO, "| x$foo" }, 'popen to'; | |
434 | test $@ =~ /^Insecure dependency/, $@; | |
1e422769 | 435 | |
09f04786 MS |
436 | test !eval { open FOO, "x$foo |" }, 'popen from'; |
437 | test $@ =~ /^Insecure dependency/, $@; | |
48c036b1 | 438 | } |
1e422769 | 439 | |
09f04786 MS |
440 | test !eval { exec $TAINT }, 'exec'; |
441 | test $@ =~ /^Insecure dependency/, $@; | |
9607fc9c | 442 | |
09f04786 MS |
443 | test !eval { system $TAINT }, 'system'; |
444 | test $@ =~ /^Insecure dependency/, $@; | |
48c036b1 | 445 | |
1e422769 | 446 | $foo = "*"; |
447 | taint_these $foo; | |
448 | ||
09f04786 MS |
449 | test !eval { `$echo 1$foo` }, 'backticks'; |
450 | test $@ =~ /^Insecure dependency/, $@; | |
1e422769 | 451 | |
09f04786 MS |
452 | SKIP: { |
453 | # wildcard expansion doesn't invoke shell on VMS, so is safe | |
454 | skip "This is not VMS", 2 unless $Is_VMS; | |
455 | ||
456 | test join('', eval { glob $foo } ) ne '', 'globbing'; | |
457 | test $@ eq '', $@; | |
1e422769 | 458 | } |
459 | } | |
460 | ||
461 | # Operations which affect processes can't use tainted data. | |
462 | { | |
09f04786 MS |
463 | test !eval { kill 0, $TAINT }, 'kill'; |
464 | test $@ =~ /^Insecure dependency/, $@; | |
1e422769 | 465 | |
09f04786 MS |
466 | SKIP: { |
467 | skip "setpgrp() is not available", 2 unless $Config{d_setpgrp}; | |
1e422769 | 468 | |
09f04786 MS |
469 | test !eval { setpgrp 0, $TAINT0 }, 'setpgrp'; |
470 | test $@ =~ /^Insecure dependency/, $@; | |
1e422769 | 471 | } |
09f04786 MS |
472 | |
473 | SKIP: { | |
474 | skip "setpriority() is not available", 2 unless $Config{d_setprior}; | |
475 | ||
476 | test !eval { setpriority 0, $TAINT0, $TAINT0 }, 'setpriority'; | |
477 | test $@ =~ /^Insecure dependency/, $@; | |
1e422769 | 478 | } |
479 | } | |
480 | ||
481 | # Some miscellaneous operations can't use tainted data. | |
482 | { | |
09f04786 MS |
483 | SKIP: { |
484 | skip "syscall() is not available", 2 unless $Config{d_syscall}; | |
485 | ||
486 | test !eval { syscall $TAINT }, 'syscall'; | |
487 | test $@ =~ /^Insecure dependency/, $@; | |
1e422769 | 488 | } |
489 | ||
490 | { | |
491 | my $foo = "x" x 979; | |
492 | taint_these $foo; | |
493 | local *FOO; | |
494 | my $temp = "./taintC$$"; | |
495 | END { unlink $temp } | |
09f04786 | 496 | test open(FOO, "> $temp"), "Couldn't open $temp for write: $!"; |
1e422769 | 497 | |
09f04786 MS |
498 | test !eval { ioctl FOO, $TAINT0, $foo }, 'ioctl'; |
499 | test $@ =~ /^Insecure dependency/, $@; | |
1e422769 | 500 | |
09f04786 MS |
501 | SKIP: { |
502 | skip "fcntl() is not available", 2 unless $Config{d_fcntl}; | |
503 | ||
504 | test !eval { fcntl FOO, $TAINT0, $foo }, 'fcntl'; | |
505 | test $@ =~ /^Insecure dependency/, $@; | |
1e422769 | 506 | } |
507 | ||
508 | close FOO; | |
509 | } | |
510 | } | |
511 | ||
9607fc9c | 512 | # Some tests involving references |
1e422769 | 513 | { |
514 | my $foo = 'abc' . $TAINT; | |
515 | my $fooref = \$foo; | |
09f04786 MS |
516 | test not tainted $fooref; |
517 | test tainted $$fooref; | |
518 | test tainted $foo; | |
1e422769 | 519 | } |
54310121 | 520 | |
521 | # Some tests involving assignment | |
522 | { | |
523 | my $foo = $TAINT0; | |
524 | my $bar = $foo; | |
09f04786 MS |
525 | test all_tainted $foo, $bar; |
526 | test tainted($foo = $bar); | |
527 | test tainted($bar = $bar); | |
528 | test tainted($bar += $bar); | |
529 | test tainted($bar -= $bar); | |
530 | test tainted($bar *= $bar); | |
531 | test tainted($bar++); | |
532 | test tainted($bar /= $bar); | |
533 | test tainted($bar += 0); | |
534 | test tainted($bar -= 2); | |
535 | test tainted($bar *= -1); | |
536 | test tainted($bar /= 1); | |
537 | test tainted($bar--); | |
538 | test $bar == 0; | |
54310121 | 539 | } |
a1f49e72 CS |
540 | |
541 | # Test assignment and return of lists | |
542 | { | |
543 | my @foo = ("A", "tainted" . $TAINT, "B"); | |
09f04786 MS |
544 | test not tainted $foo[0]; |
545 | test tainted $foo[1]; | |
546 | test not tainted $foo[2]; | |
a1f49e72 | 547 | my @bar = @foo; |
09f04786 MS |
548 | test not tainted $bar[0]; |
549 | test tainted $bar[1]; | |
550 | test not tainted $bar[2]; | |
a1f49e72 | 551 | my @baz = eval { "A", "tainted" . $TAINT, "B" }; |
09f04786 MS |
552 | test not tainted $baz[0]; |
553 | test tainted $baz[1]; | |
554 | test not tainted $baz[2]; | |
a1f49e72 | 555 | my @plugh = eval q[ "A", "tainted" . $TAINT, "B" ]; |
09f04786 MS |
556 | test not tainted $plugh[0]; |
557 | test tainted $plugh[1]; | |
558 | test not tainted $plugh[2]; | |
a1f49e72 | 559 | my $nautilus = sub { "A", "tainted" . $TAINT, "B" }; |
09f04786 MS |
560 | test not tainted ((&$nautilus)[0]); |
561 | test tainted ((&$nautilus)[1]); | |
562 | test not tainted ((&$nautilus)[2]); | |
a1f49e72 | 563 | my @xyzzy = &$nautilus; |
09f04786 MS |
564 | test not tainted $xyzzy[0]; |
565 | test tainted $xyzzy[1]; | |
566 | test not tainted $xyzzy[2]; | |
a1f49e72 | 567 | my $red_october = sub { return "A", "tainted" . $TAINT, "B" }; |
09f04786 MS |
568 | test not tainted ((&$red_october)[0]); |
569 | test tainted ((&$red_october)[1]); | |
570 | test not tainted ((&$red_october)[2]); | |
a1f49e72 | 571 | my @corge = &$red_october; |
09f04786 MS |
572 | test not tainted $corge[0]; |
573 | test tainted $corge[1]; | |
574 | test not tainted $corge[2]; | |
a1f49e72 | 575 | } |
fb73857a | 576 | |
577 | # Test for system/library calls returning string data of dubious origin. | |
578 | { | |
579 | # No reliable %Config check for getpw* | |
09f04786 MS |
580 | SKIP: { |
581 | skip "getpwent() is not available", 1 unless | |
582 | eval { setpwent(); getpwent() }; | |
583 | ||
fb73857a | 584 | setpwent(); |
585 | my @getpwent = getpwent(); | |
586 | die "getpwent: $!\n" unless (@getpwent); | |
09f04786 | 587 | test ( not tainted $getpwent[0] |
2959b6e3 | 588 | and tainted $getpwent[1] |
fb73857a | 589 | and not tainted $getpwent[2] |
590 | and not tainted $getpwent[3] | |
591 | and not tainted $getpwent[4] | |
592 | and not tainted $getpwent[5] | |
3972a534 | 593 | and tainted $getpwent[6] # ge?cos |
fb73857a | 594 | and not tainted $getpwent[7] |
3972a534 | 595 | and tainted $getpwent[8]); # shell |
fb73857a | 596 | endpwent(); |
fb73857a | 597 | } |
598 | ||
09f04786 MS |
599 | SKIP: { |
600 | # pretty hard to imagine not | |
601 | skip "readdir() is not available", 1 unless $Config{d_readdir}; | |
602 | ||
fb73857a | 603 | local(*D); |
604 | opendir(D, "op") or die "opendir: $!\n"; | |
605 | my $readdir = readdir(D); | |
09f04786 MS |
606 | test tainted $readdir; |
607 | closedir(D); | |
fb73857a | 608 | } |
609 | ||
09f04786 MS |
610 | SKIP: { |
611 | skip "readlink() or symlink() is not available" unless | |
612 | $Config{d_readlink} && $Config{d_symlink}; | |
613 | ||
fb73857a | 614 | my $symlink = "sl$$"; |
615 | unlink($symlink); | |
dc459aad JH |
616 | my $sl = "/something/naughty"; |
617 | # it has to be a real path on Mac OS | |
618 | $sl = MacPerl::MakePath((MacPerl::Volumes())[0]) if $Is_MacOS; | |
619 | symlink($sl, $symlink) or die "symlink: $!\n"; | |
fb73857a | 620 | my $readlink = readlink($symlink); |
09f04786 | 621 | test tainted $readlink; |
fb73857a | 622 | unlink($symlink); |
fb73857a | 623 | } |
624 | } | |
625 | ||
626 | # test bitwise ops (regression bug) | |
627 | { | |
628 | my $why = "y"; | |
629 | my $j = "x" | $why; | |
09f04786 | 630 | test not tainted $j; |
fb73857a | 631 | $why = $TAINT."y"; |
632 | $j = "x" | $why; | |
09f04786 | 633 | test tainted $j; |
fb73857a | 634 | } |
635 | ||
48c036b1 GS |
636 | # test target of substitution (regression bug) |
637 | { | |
638 | my $why = $TAINT."y"; | |
639 | $why =~ s/y/z/; | |
09f04786 | 640 | test tainted $why; |
48c036b1 GS |
641 | |
642 | my $z = "[z]"; | |
643 | $why =~ s/$z/zee/; | |
09f04786 | 644 | test tainted $why; |
48c036b1 GS |
645 | |
646 | $why =~ s/e/'-'.$$/ge; | |
09f04786 | 647 | test tainted $why; |
48c036b1 | 648 | } |
d929ce6f | 649 | |
09f04786 MS |
650 | |
651 | SKIP: { | |
652 | skip "no IPC::SysV", 2 unless $ipcsysv; | |
653 | ||
654 | # test shmread | |
655 | SKIP: { | |
656 | skip "shm*() not available", 1 unless $Config{d_shm}; | |
657 | ||
658 | no strict 'subs'; | |
659 | my $sent = "foobar"; | |
660 | my $rcvd; | |
661 | my $size = 2000; | |
662 | my $id = shmget(IPC_PRIVATE, $size, S_IRWXU); | |
663 | ||
664 | if (defined $id) { | |
665 | if (shmwrite($id, $sent, 0, 60)) { | |
666 | if (shmread($id, $rcvd, 0, 60)) { | |
667 | substr($rcvd, index($rcvd, "\0")) = ''; | |
668 | } else { | |
669 | warn "# shmread failed: $!\n"; | |
670 | } | |
671 | } else { | |
672 | warn "# shmwrite failed: $!\n"; | |
673 | } | |
674 | shmctl($id, IPC_RMID, 0) or warn "# shmctl failed: $!\n"; | |
675 | } else { | |
676 | warn "# shmget failed: $!\n"; | |
677 | } | |
678 | ||
679 | skip "SysV shared memory operation failed", 1 unless | |
680 | $rcvd eq $sent; | |
681 | ||
682 | test tainted $rcvd; | |
c9f931b8 | 683 | } |
c2e66d9e | 684 | |
d929ce6f | 685 | |
09f04786 MS |
686 | # test msgrcv |
687 | SKIP: { | |
688 | skip "msg*() not available", 1 unless $Config{d_msg}; | |
41d6edb2 | 689 | |
b9d1c439 | 690 | no strict 'subs'; |
41d6edb2 JH |
691 | my $id = msgget(IPC_PRIVATE, IPC_CREAT | S_IRWXU); |
692 | ||
693 | my $sent = "message"; | |
694 | my $type_sent = 1234; | |
695 | my $rcvd; | |
696 | my $type_rcvd; | |
697 | ||
698 | if (defined $id) { | |
ddc3217d JH |
699 | if (msgsnd($id, pack("l! a*", $type_sent, $sent), IPC_NOWAIT)) { |
700 | if (msgrcv($id, $rcvd, 60, 0, IPC_NOWAIT)) { | |
41d6edb2 JH |
701 | ($type_rcvd, $rcvd) = unpack("l! a*", $rcvd); |
702 | } else { | |
ddc3217d | 703 | warn "# msgrcv failed: $!\n"; |
41d6edb2 JH |
704 | } |
705 | } else { | |
ddc3217d | 706 | warn "# msgsnd failed: $!\n"; |
41d6edb2 | 707 | } |
c2e66d9e | 708 | msgctl($id, IPC_RMID, 0) or warn "# msgctl failed: $!\n"; |
41d6edb2 JH |
709 | } else { |
710 | warn "# msgget failed\n"; | |
711 | } | |
712 | ||
09f04786 MS |
713 | SKIP: { |
714 | skip "SysV message queue operation failed", 1 | |
715 | unless $rcvd eq $sent && $type_sent == $type_rcvd; | |
716 | ||
717 | test tainted $rcvd; | |
41d6edb2 | 718 | } |
41d6edb2 JH |
719 | } |
720 | } | |
721 | ||
3887d568 AP |
722 | { |
723 | # bug id 20001004.006 | |
724 | ||
dc459aad | 725 | open IN, $TEST or warn "$0: cannot read $TEST: $!" ; |
3887d568 AP |
726 | local $/; |
727 | my $a = <IN>; | |
728 | my $b = <IN>; | |
09f04786 MS |
729 | |
730 | ok tainted($a) && tainted($b) && !defined($b); | |
731 | ||
27c9684d | 732 | close IN; |
3887d568 | 733 | } |
27c9684d AP |
734 | |
735 | { | |
736 | # bug id 20001004.007 | |
737 | ||
dc459aad | 738 | open IN, $TEST or warn "$0: cannot read $TEST: $!" ; |
27c9684d AP |
739 | my $a = <IN>; |
740 | ||
741 | my $c = { a => 42, | |
742 | b => $a }; | |
09f04786 MS |
743 | |
744 | ok !tainted($c->{a}) && tainted($c->{b}); | |
745 | ||
27c9684d AP |
746 | |
747 | my $d = { a => $a, | |
748 | b => 42 }; | |
09f04786 MS |
749 | ok tainted($d->{a}) && !tainted($d->{b}); |
750 | ||
27c9684d AP |
751 | |
752 | my $e = { a => 42, | |
753 | b => { c => $a, d => 42 } }; | |
09f04786 MS |
754 | ok !tainted($e->{a}) && |
755 | !tainted($e->{b}) && | |
756 | tainted($e->{b}->{c}) && | |
757 | !tainted($e->{b}->{d}); | |
27c9684d AP |
758 | |
759 | close IN; | |
760 | } | |
761 | ||
b94c04ac JH |
762 | { |
763 | # bug id 20010519.003 | |
764 | ||
248c32c0 JH |
765 | BEGIN { |
766 | use vars qw($has_fcntl); | |
767 | eval { require Fcntl; import Fcntl; }; | |
768 | unless ($@) { | |
769 | $has_fcntl = 1; | |
770 | } | |
771 | } | |
b94c04ac | 772 | |
09f04786 MS |
773 | SKIP: { |
774 | skip "no Fcntl", 18 unless $has_fcntl; | |
775 | ||
248c32c0 JH |
776 | my $evil = "foo" . $TAINT; |
777 | ||
778 | eval { sysopen(my $ro, $evil, &O_RDONLY) }; | |
09f04786 | 779 | test $@ !~ /^Insecure dependency/, $@; |
248c32c0 JH |
780 | |
781 | eval { sysopen(my $wo, $evil, &O_WRONLY) }; | |
09f04786 | 782 | test $@ =~ /^Insecure dependency/, $@; |
248c32c0 JH |
783 | |
784 | eval { sysopen(my $rw, $evil, &O_RDWR) }; | |
09f04786 | 785 | test $@ =~ /^Insecure dependency/, $@; |
248c32c0 JH |
786 | |
787 | eval { sysopen(my $ap, $evil, &O_APPEND) }; | |
09f04786 | 788 | test $@ =~ /^Insecure dependency/, $@; |
248c32c0 JH |
789 | |
790 | eval { sysopen(my $cr, $evil, &O_CREAT) }; | |
09f04786 | 791 | test $@ =~ /^Insecure dependency/, $@; |
248c32c0 JH |
792 | |
793 | eval { sysopen(my $tr, $evil, &O_TRUNC) }; | |
09f04786 | 794 | test $@ =~ /^Insecure dependency/, $@; |
248c32c0 | 795 | |
09f04786 MS |
796 | eval { sysopen(my $ro, "foo", &O_RDONLY | $TAINT0) }; |
797 | test $@ !~ /^Insecure dependency/, $@; | |
248c32c0 | 798 | |
09f04786 MS |
799 | eval { sysopen(my $wo, "foo", &O_WRONLY | $TAINT0) }; |
800 | test $@ =~ /^Insecure dependency/, $@; | |
248c32c0 | 801 | |
09f04786 MS |
802 | eval { sysopen(my $rw, "foo", &O_RDWR | $TAINT0) }; |
803 | test $@ =~ /^Insecure dependency/, $@; | |
248c32c0 | 804 | |
09f04786 MS |
805 | eval { sysopen(my $ap, "foo", &O_APPEND | $TAINT0) }; |
806 | test $@ =~ /^Insecure dependency/, $@; | |
248c32c0 | 807 | |
09f04786 MS |
808 | eval { sysopen(my $cr, "foo", &O_CREAT | $TAINT0) }; |
809 | test $@ =~ /^Insecure dependency/, $@; | |
248c32c0 | 810 | |
09f04786 MS |
811 | eval { sysopen(my $tr, "foo", &O_TRUNC | $TAINT0) }; |
812 | test $@ =~ /^Insecure dependency/, $@; | |
248c32c0 | 813 | |
09f04786 MS |
814 | eval { sysopen(my $ro, "foo", &O_RDONLY, $TAINT0) }; |
815 | test $@ !~ /^Insecure dependency/, $@; | |
248c32c0 | 816 | |
09f04786 MS |
817 | eval { sysopen(my $wo, "foo", &O_WRONLY, $TAINT0) }; |
818 | test $@ =~ /^Insecure dependency/, $@; | |
248c32c0 | 819 | |
09f04786 MS |
820 | eval { sysopen(my $rw, "foo", &O_RDWR, $TAINT0) }; |
821 | test $@ =~ /^Insecure dependency/, $@; | |
248c32c0 | 822 | |
09f04786 MS |
823 | eval { sysopen(my $ap, "foo", &O_APPEND, $TAINT0) }; |
824 | test $@ =~ /^Insecure dependency/, $@; | |
248c32c0 | 825 | |
09f04786 MS |
826 | eval { sysopen(my $cr, "foo", &O_CREAT, $TAINT0) }; |
827 | test $@ =~ /^Insecure dependency/, $@; | |
248c32c0 | 828 | |
09f04786 MS |
829 | eval { sysopen(my $tr, "foo", &O_TRUNC, $TAINT0) }; |
830 | test $@ =~ /^Insecure dependency/, $@; | |
248c32c0 JH |
831 | |
832 | unlink("foo"); # not unlink($evil), because that would fail... | |
833 | } | |
b94c04ac JH |
834 | } |
835 | ||
65811bc3 JH |
836 | { |
837 | # bug 20010526.004 | |
838 | ||
839 | use warnings; | |
840 | ||
09f04786 MS |
841 | my $saw_warning = 0; |
842 | local $SIG{__WARN__} = sub { $saw_warning = 1 }; | |
65811bc3 JH |
843 | |
844 | sub fmi { | |
845 | my $divnum = shift()/1; | |
846 | sprintf("%1.1f\n", $divnum); | |
847 | } | |
848 | ||
849 | fmi(21 . $TAINT); | |
850 | fmi(37); | |
851 | fmi(248); | |
852 | ||
09f04786 | 853 | test !$saw_warning; |
65811bc3 JH |
854 | } |
855 | ||
9e1b5a4e A |
856 | |
857 | { | |
858 | # Bug ID 20010730.010 | |
859 | ||
860 | my $i = 0; | |
861 | ||
862 | sub Tie::TIESCALAR { | |
863 | my $class = shift; | |
864 | my $arg = shift; | |
865 | ||
866 | bless \$arg => $class; | |
867 | } | |
868 | ||
869 | sub Tie::FETCH { | |
870 | $i ++; | |
871 | ${$_ [0]} | |
872 | } | |
873 | ||
874 | ||
875 | package main; | |
876 | ||
877 | my $bar = "The Big Bright Green Pleasure Machine"; | |
878 | taint_these $bar; | |
879 | tie my ($foo), Tie => $bar; | |
880 | ||
881 | my $baz = $foo; | |
882 | ||
09f04786 | 883 | ok $i == 1; |
9e1b5a4e A |
884 | } |
885 | ||
8852b6d2 JH |
886 | { |
887 | # Check that all environment variables are tainted. | |
888 | my @untainted; | |
889 | while (my ($k, $v) = each %ENV) { | |
890 | if (!tainted($v) && | |
eb25aaf6 HS |
891 | # These we have explicitly untainted or set earlier. |
892 | $k !~ /^(BASH_ENV|CDPATH|ENV|IFS|PATH|PERL_CORE|TEMP|TERM|TMP)$/) { | |
8852b6d2 JH |
893 | push @untainted, "# '$k' = '$v'\n"; |
894 | } | |
895 | } | |
09f04786 | 896 | test @untainted == 0, "untainted:\n @untainted"; |
8852b6d2 | 897 | } |
9e1b5a4e A |
898 | |
899 | ||
9aa05f58 | 900 | ok( ${^TAINT} == 1, '$^TAINT is on' ); |
7c36658b MS |
901 | |
902 | eval { ${^TAINT} = 0 }; | |
903 | ok( ${^TAINT}, '$^TAINT is not assignable' ); | |
904 | ok( $@ =~ /^Modification of a read-only value attempted/, | |
c212f17f | 905 | 'Assigning to ${^TAINT} fails' ); |
7c36658b | 906 | |
e08e52cf AMS |
907 | { |
908 | # bug 20011111.105 | |
909 | ||
910 | my $re1 = qr/x$TAINT/; | |
09f04786 | 911 | test tainted $re1; |
e08e52cf AMS |
912 | |
913 | my $re2 = qr/^$re1\z/; | |
09f04786 | 914 | test tainted $re2; |
e08e52cf AMS |
915 | |
916 | my $re3 = "$re2"; | |
09f04786 | 917 | test tainted $re3; |
e08e52cf | 918 | } |
52a55424 | 919 | |
09f04786 MS |
920 | SKIP: { |
921 | skip "system {} has different semantics on Win32", 1 if $Is_MSWin32; | |
922 | ||
52a55424 RG |
923 | # bug 20010221.005 |
924 | local $ENV{PATH} .= $TAINT; | |
925 | eval { system { "echo" } "/arg0", "arg1" }; | |
09f04786 | 926 | test $@ =~ /^Insecure \$ENV/; |
52a55424 | 927 | } |
09f04786 MS |
928 | |
929 | TODO: { | |
930 | todo_skip 'tainted %ENV warning occludes tainted arguments warning', 22 | |
931 | if $Is_VMS; | |
932 | ||
933 | # bug 20020208.005 plus some single arg exec/system extras | |
06bd1802 | 934 | my $err = qr/^Insecure dependency/ ; |
09f04786 MS |
935 | test !eval { exec $TAINT, $TAINT }, 'exec'; |
936 | test $@ =~ $err, $@; | |
937 | test !eval { exec $TAINT $TAINT }, 'exec'; | |
938 | test $@ =~ $err, $@; | |
939 | test !eval { exec $TAINT $TAINT, $TAINT }, 'exec'; | |
940 | test $@ =~ $err, $@; | |
941 | test !eval { exec $TAINT 'notaint' }, 'exec'; | |
942 | test $@ =~ $err, $@; | |
943 | test !eval { exec {'notaint'} $TAINT }, 'exec'; | |
944 | test $@ =~ $err, $@; | |
945 | ||
946 | test !eval { system $TAINT, $TAINT }, 'system'; | |
947 | test $@ =~ $err, $@; | |
948 | test !eval { system $TAINT $TAINT }, 'system'; | |
949 | test $@ =~ $err, $@; | |
950 | test !eval { system $TAINT $TAINT, $TAINT }, 'system'; | |
951 | test $@ =~ $err, $@; | |
952 | test !eval { system $TAINT 'notaint' }, 'system'; | |
953 | test $@ =~ $err, $@; | |
954 | test !eval { system {'notaint'} $TAINT }, 'system'; | |
955 | test $@ =~ $err, $@; | |
956 | ||
957 | eval { | |
958 | no warnings; | |
959 | system("lskdfj does not exist","with","args"); | |
960 | }; | |
961 | test !$@; | |
962 | ||
963 | SKIP: { | |
964 | skip "no exec() on MacOS Classic" if $Is_MacOS; | |
965 | ||
966 | eval { | |
967 | no warnings; | |
968 | exec("lskdfj does not exist","with","args"); | |
969 | }; | |
970 | test !$@; | |
63c6dcc1 | 971 | } |
6c8794e1 JH |
972 | |
973 | # If you add tests here update also the above skip block for VMS. | |
bbd7eb8a | 974 | } |
a8c7c11a HS |
975 | |
976 | { | |
977 | # [ID 20020704.001] taint propagation failure | |
978 | use re 'taint'; | |
979 | $TAINT =~ /(.*)/; | |
09f04786 | 980 | test tainted(my $foo = $1); |
a8c7c11a | 981 | } |
7b756e0a RGS |
982 | |
983 | { | |
c038024b RGS |
984 | # [perl #24291] this used to dump core |
985 | our %nonmagicalenv = ( PATH => "util" ); | |
7b756e0a RGS |
986 | local *ENV = \%nonmagicalenv; |
987 | eval { system("lskdfj"); }; | |
09f04786 | 988 | test $@ =~ /^%ENV is aliased to another variable while running with -T switch/; |
c038024b | 989 | local *ENV = *nonmagicalenv; |
7b756e0a | 990 | eval { system("lskdfj"); }; |
09f04786 | 991 | test $@ =~ /^%ENV is aliased to %nonmagicalenv while running with -T switch/; |
7b756e0a | 992 | } |
0b4182de RD |
993 | { |
994 | # [perl #24248] | |
995 | $TAINT =~ /(.*)/; | |
09f04786 | 996 | test !tainted($1); |
0b4182de | 997 | my $notaint = $1; |
09f04786 | 998 | test !tainted($notaint); |
0b4182de RD |
999 | |
1000 | my $l; | |
1001 | $notaint =~ /($notaint)/; | |
1002 | $l = $1; | |
09f04786 MS |
1003 | test !tainted($1); |
1004 | test !tainted($l); | |
0b4182de RD |
1005 | $notaint =~ /($TAINT)/; |
1006 | $l = $1; | |
09f04786 MS |
1007 | test tainted($1); |
1008 | test tainted($l); | |
0b4182de RD |
1009 | |
1010 | $TAINT =~ /($notaint)/; | |
1011 | $l = $1; | |
09f04786 MS |
1012 | test !tainted($1); |
1013 | test !tainted($l); | |
0b4182de RD |
1014 | $TAINT =~ /($TAINT)/; |
1015 | $l = $1; | |
09f04786 MS |
1016 | test tainted($1); |
1017 | test tainted($l); | |
0b4182de RD |
1018 | |
1019 | my $r; | |
1020 | ($r = $TAINT) =~ /($notaint)/; | |
09f04786 | 1021 | test !tainted($1); |
0b4182de | 1022 | ($r = $TAINT) =~ /($TAINT)/; |
09f04786 | 1023 | test tainted($1); |
3511154c DM |
1024 | |
1025 | # [perl #24674] | |
1026 | # accessing $^O shoudn't taint it as a side-effect; | |
1027 | # assigning tainted data to it is now an error | |
1028 | ||
09f04786 | 1029 | test !tainted($^O); |
3511154c | 1030 | if (!$^X) { } elsif ($^O eq 'bar') { } |
09f04786 | 1031 | test !tainted($^O); |
3511154c | 1032 | eval '$^O = $^X'; |
09f04786 | 1033 | test $@ =~ /Insecure dependency in/; |
0b4182de | 1034 | } |
23634c10 AL |
1035 | |
1036 | EFFECTIVELY_CONSTANTS: { | |
1037 | my $tainted_number = 12 + $TAINT0; | |
09f04786 | 1038 | test tainted( $tainted_number ); |
23634c10 AL |
1039 | |
1040 | # Even though it's always 0, it's still tainted | |
1041 | my $tainted_product = $tainted_number * 0; | |
09f04786 MS |
1042 | test tainted( $tainted_product ); |
1043 | test $tainted_product == 0; | |
23634c10 AL |
1044 | } |
1045 | ||
1046 | TERNARY_CONDITIONALS: { | |
1047 | my $tainted_true = $TAINT . "blah blah blah"; | |
1048 | my $tainted_false = $TAINT0; | |
09f04786 MS |
1049 | test tainted( $tainted_true ); |
1050 | test tainted( $tainted_false ); | |
23634c10 AL |
1051 | |
1052 | my $result = $tainted_true ? "True" : "False"; | |
09f04786 MS |
1053 | test $result eq "True"; |
1054 | test !tainted( $result ); | |
23634c10 AL |
1055 | |
1056 | $result = $tainted_false ? "True" : "False"; | |
09f04786 MS |
1057 | test $result eq "False"; |
1058 | test !tainted( $result ); | |
23634c10 AL |
1059 | |
1060 | my $untainted_whatever = "The Fabulous Johnny Cash"; | |
1061 | my $tainted_whatever = "Soft Cell" . $TAINT; | |
1062 | ||
1063 | $result = $tainted_true ? $tainted_whatever : $untainted_whatever; | |
09f04786 MS |
1064 | test $result eq "Soft Cell"; |
1065 | test tainted( $result ); | |
23634c10 AL |
1066 | |
1067 | $result = $tainted_false ? $tainted_whatever : $untainted_whatever; | |
09f04786 MS |
1068 | test $result eq "The Fabulous Johnny Cash"; |
1069 | test !tainted( $result ); | |
23634c10 | 1070 | } |