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