Commit | Line | Data |
1e422769 |
1 | #!./perl -T |
2 | # |
3 | # Taint tests by Tom Phoenix <rootbeer@teleport.com>. |
4 | # |
5 | # I don't claim to know all about tainting. If anyone sees |
9607fc9c |
6 | # tests that I've missed here, please add them. But this is |
1e422769 |
7 | # better than having no tests at all, right? |
8 | # |
9 | |
10 | BEGIN { |
11 | chdir 't' if -d 't'; |
20822f61 |
12 | @INC = '../lib'; |
1e422769 |
13 | } |
14 | |
15 | use strict; |
16 | use Config; |
17 | |
7c36658b |
18 | my $test = 177; |
19 | sub ok { |
20 | my($ok, $name) = @_; |
21 | |
22 | # You have to do it this way or VMS will get confused. |
23 | print $ok ? "ok $test - $name\n" : "not ok $test - $name\n"; |
24 | |
25 | printf "# Failed test at line %d\n", (caller)[2] unless $ok; |
26 | |
27 | $test++; |
28 | return $ok; |
29 | } |
30 | |
31 | |
0ecd3ba2 |
32 | $| = 1; |
33 | |
9d116dd7 |
34 | # We do not want the whole taint.t to fail |
35 | # just because Errno possibly failing. |
36 | eval { require Errno; import Errno }; |
37 | |
c9f931b8 |
38 | use vars qw($ipcsysv); # did we manage to load IPC::SysV? |
39 | |
3eeba6fb |
40 | BEGIN { |
41 | if ($^O eq 'VMS' && !defined($Config{d_setenv})) { |
42 | $ENV{PATH} = $ENV{PATH}; |
43 | $ENV{TERM} = $ENV{TERM} ne ''? $ENV{TERM} : 'dummy'; |
44 | } |
be3174d2 |
45 | if ($Config{'extensions'} =~ /\bIPC\/SysV\b/ |
46 | && ($Config{d_shm} || $Config{d_msg})) { |
c9f931b8 |
47 | eval { require IPC::SysV }; |
48 | unless ($@) { |
49 | $ipcsysv++; |
50 | IPC::SysV->import(qw(IPC_PRIVATE IPC_RMID IPC_CREAT S_IRWXU)); |
51 | } |
b9d1c439 |
52 | } |
3eeba6fb |
53 | } |
54 | |
1e422769 |
55 | my $Is_VMS = $^O eq 'VMS'; |
68dc0745 |
56 | my $Is_MSWin32 = $^O eq 'MSWin32'; |
2986a63f |
57 | my $Is_NetWare = $^O eq 'NetWare'; |
39e571d4 |
58 | my $Is_Dos = $^O eq 'dos'; |
343d3f38 |
59 | my $Is_Cygwin = $^O eq 'cygwin'; |
68dc0745 |
60 | my $Invoke_Perl = $Is_VMS ? 'MCR Sys$Disk:[]Perl.' : |
2986a63f |
61 | ($Is_MSWin32 ? '.\perl' : |
62 | ($Is_NetWare ? 'perl' : './perl')); |
c90c0ff4 |
63 | my @MoreEnv = qw/IFS CDPATH ENV BASH_ENV/; |
7bac28a0 |
64 | |
1e422769 |
65 | if ($Is_VMS) { |
7bac28a0 |
66 | my (%old, $x); |
67 | for $x ('DCL$PATH', @MoreEnv) { |
68 | ($old{$x}) = $ENV{$x} =~ /^(.*)$/ if exists $ENV{$x}; |
69 | } |
1e422769 |
70 | eval <<EndOfCleanup; |
71 | END { |
3eeba6fb |
72 | \$ENV{PATH} = '' if $Config{d_setenv}; |
1e422769 |
73 | warn "# Note: logical name 'PATH' may have been deleted\n"; |
562a7b0c |
74 | \@ENV{keys %old} = values %old; |
1e422769 |
75 | } |
76 | EndOfCleanup |
77 | } |
78 | |
79 | # Sources of taint: |
80 | # The empty tainted value, for tainting strings |
81 | my $TAINT = substr($^X, 0, 0); |
82 | # A tainted zero, useful for tainting numbers |
83 | my $TAINT0 = 0 + $TAINT; |
84 | |
85 | # This taints each argument passed. All must be lvalues. |
86 | # Side effect: It also stringifies them. :-( |
87 | sub taint_these (@) { |
88 | for (@_) { $_ .= $TAINT } |
89 | } |
90 | |
91 | # How to identify taint when you see it |
92 | sub any_tainted (@) { |
93 | not eval { join("",@_), kill 0; 1 }; |
94 | } |
95 | sub tainted ($) { |
96 | any_tainted @_; |
97 | } |
98 | sub all_tainted (@) { |
99 | for (@_) { return 0 unless tainted $_ } |
100 | 1; |
101 | } |
102 | |
103 | sub test ($$;$) { |
104 | my($serial, $boolean, $diag) = @_; |
105 | if ($boolean) { |
106 | print "ok $serial\n"; |
107 | } else { |
108 | print "not ok $serial\n"; |
109 | for (split m/^/m, $diag) { |
110 | print "# $_"; |
111 | } |
9607fc9c |
112 | print "\n" unless |
1e422769 |
113 | $diag eq '' |
114 | or substr($diag, -1) eq "\n"; |
115 | } |
116 | } |
117 | |
118 | # We need an external program to call. |
2986a63f |
119 | my $ECHO = ($Is_MSWin32 ? ".\\echo$$" : ($Is_NetWare ? "echo$$" : "./echo$$")); |
1e422769 |
120 | END { unlink $ECHO } |
121 | open PROG, "> $ECHO" or die "Can't create $ECHO: $!"; |
122 | print PROG 'print "@ARGV\n"', "\n"; |
123 | close PROG; |
124 | my $echo = "$Invoke_Perl $ECHO"; |
125 | |
52a55424 |
126 | print "1..183\n"; |
1e422769 |
127 | |
128 | # First, let's make sure that Perl is checking the dangerous |
129 | # environment variables. Maybe they aren't set yet, so we'll |
130 | # taint them ourselves. |
131 | { |
132 | $ENV{'DCL$PATH'} = '' if $Is_VMS; |
133 | |
7bac28a0 |
134 | $ENV{PATH} = ''; |
c90c0ff4 |
135 | delete @ENV{@MoreEnv}; |
7bac28a0 |
136 | $ENV{TERM} = 'dumb'; |
137 | |
8852b6d2 |
138 | if ($Is_Cygwin && ! -f 'cygwin1.dll') { |
343d3f38 |
139 | system("/usr/bin/cp /usr/bin/cygwin1.dll .") && |
140 | die "$0: failed to cp cygwin1.dll: $!\n"; |
141 | END { unlink "cygwin1.dll" } # yes, done for all platforms... |
142 | } |
143 | |
7bac28a0 |
144 | test 1, eval { `$echo 1` } eq "1\n"; |
145 | |
2986a63f |
146 | if ($Is_MSWin32 || $Is_NetWare || $Is_VMS || $Is_Dos) { |
7bac28a0 |
147 | print "# Environment tainting tests skipped\n"; |
c90c0ff4 |
148 | for (2..5) { print "ok $_\n" } |
5aabfad6 |
149 | } |
150 | else { |
7bac28a0 |
151 | my @vars = ('PATH', @MoreEnv); |
152 | while (my $v = $vars[0]) { |
153 | local $ENV{$v} = $TAINT; |
154 | last if eval { `$echo 1` }; |
155 | last unless $@ =~ /^Insecure \$ENV{$v}/; |
156 | shift @vars; |
157 | } |
158 | test 2, !@vars, "\$$vars[0]"; |
c90c0ff4 |
159 | |
160 | # tainted $TERM is unsafe only if it contains metachars |
161 | local $ENV{TERM}; |
162 | $ENV{TERM} = 'e=mc2'; |
163 | test 3, eval { `$echo 1` } eq "1\n"; |
164 | $ENV{TERM} = 'e=mc2' . $TAINT; |
165 | test 4, eval { `$echo 1` } eq ''; |
166 | test 5, $@ =~ /^Insecure \$ENV{TERM}/, $@; |
5aabfad6 |
167 | } |
7bac28a0 |
168 | |
9607fc9c |
169 | my $tmp; |
2986a63f |
170 | if ($^O eq 'os2' || $^O eq 'amigaos' || $Is_MSWin32 || $Is_NetWare || $Is_Dos) { |
48c036b1 |
171 | print "# all directories are writeable\n"; |
172 | } |
173 | else { |
9607fc9c |
174 | $tmp = (grep { defined and -d and (stat _)[2] & 2 } |
099f76bb |
175 | qw(sys$scratch /tmp /var/tmp /usr/tmp), |
9607fc9c |
176 | @ENV{qw(TMP TEMP)})[0] |
177 | or print "# can't find world-writeable directory to test PATH\n"; |
178 | } |
179 | |
385588b3 |
180 | if ($tmp) { |
7bac28a0 |
181 | local $ENV{PATH} = $tmp; |
c90c0ff4 |
182 | test 6, eval { `$echo 1` } eq ''; |
183 | test 7, $@ =~ /^Insecure directory in \$ENV{PATH}/, $@; |
1e422769 |
184 | } |
185 | else { |
fac76ed7 |
186 | for (6..7) { print "ok $_ # Skipped: all directories are writeable\n" } |
1e422769 |
187 | } |
188 | |
1e422769 |
189 | if ($Is_VMS) { |
190 | $ENV{'DCL$PATH'} = $TAINT; |
c90c0ff4 |
191 | test 8, eval { `$echo 1` } eq ''; |
192 | test 9, $@ =~ /^Insecure \$ENV{DCL\$PATH}/, $@; |
9607fc9c |
193 | if ($tmp) { |
194 | $ENV{'DCL$PATH'} = $tmp; |
c90c0ff4 |
195 | test 10, eval { `$echo 1` } eq ''; |
196 | test 11, $@ =~ /^Insecure directory in \$ENV{DCL\$PATH}/, $@; |
9607fc9c |
197 | } |
198 | else { |
fac76ed7 |
199 | for (10..11) { print "ok $_ # Skipped: can't find world-writeable directory to test DCL\$PATH\n" } |
9607fc9c |
200 | } |
1e422769 |
201 | $ENV{'DCL$PATH'} = ''; |
202 | } |
203 | else { |
fac76ed7 |
204 | for (8..11) { print "ok $_ # Skipped: This is not VMS\n"; } |
1e422769 |
205 | } |
206 | } |
207 | |
208 | # Let's see that we can taint and untaint as needed. |
209 | { |
210 | my $foo = $TAINT; |
c90c0ff4 |
211 | test 12, tainted $foo; |
9607fc9c |
212 | |
213 | # That was a sanity check. If it failed, stop the insanity! |
214 | die "Taint checks don't seem to be enabled" unless tainted $foo; |
1e422769 |
215 | |
216 | $foo = "foo"; |
c90c0ff4 |
217 | test 13, not tainted $foo; |
1e422769 |
218 | |
219 | taint_these($foo); |
c90c0ff4 |
220 | test 14, tainted $foo; |
1e422769 |
221 | |
222 | my @list = 1..10; |
c90c0ff4 |
223 | test 15, not any_tainted @list; |
1e422769 |
224 | taint_these @list[1,3,5,7,9]; |
c90c0ff4 |
225 | test 16, any_tainted @list; |
226 | test 17, all_tainted @list[1,3,5,7,9]; |
227 | test 18, not any_tainted @list[0,2,4,6,8]; |
1e422769 |
228 | |
229 | ($foo) = $foo =~ /(.+)/; |
c90c0ff4 |
230 | test 19, not tainted $foo; |
1e422769 |
231 | |
232 | $foo = $1 if ('bar' . $TAINT) =~ /(.+)/; |
c90c0ff4 |
233 | test 20, not tainted $foo; |
234 | test 21, $foo eq 'bar'; |
1e422769 |
235 | |
b3eb6a9b |
236 | { |
237 | use re 'taint'; |
238 | |
239 | ($foo) = ('bar' . $TAINT) =~ /(.+)/; |
240 | test 22, tainted $foo; |
241 | test 23, $foo eq 'bar'; |
242 | |
243 | $foo = $1 if ('bar' . $TAINT) =~ /(.+)/; |
244 | test 24, tainted $foo; |
245 | test 25, $foo eq 'bar'; |
246 | } |
247 | |
248 | $foo = $1 if 'bar' =~ /(.+)$TAINT/; |
249 | test 26, tainted $foo; |
250 | test 27, $foo eq 'bar'; |
48c036b1 |
251 | |
1e422769 |
252 | my $pi = 4 * atan2(1,1) + $TAINT0; |
b3eb6a9b |
253 | test 28, tainted $pi; |
1e422769 |
254 | |
255 | ($pi) = $pi =~ /(\d+\.\d+)/; |
b3eb6a9b |
256 | test 29, not tainted $pi; |
257 | test 30, sprintf("%.5f", $pi) eq '3.14159'; |
1e422769 |
258 | } |
259 | |
260 | # How about command-line arguments? The problem is that we don't |
261 | # always get some, so we'll run another process with some. |
262 | { |
263 | my $arg = "./arg$$"; |
264 | open PROG, "> $arg" or die "Can't create $arg: $!"; |
265 | print PROG q{ |
266 | eval { join('', @ARGV), kill 0 }; |
267 | exit 0 if $@ =~ /^Insecure dependency/; |
268 | print "# Oops: \$@ was [$@]\n"; |
269 | exit 1; |
270 | }; |
271 | close PROG; |
272 | print `$Invoke_Perl "-T" $arg and some suspect arguments`; |
b3eb6a9b |
273 | test 31, !$?, "Exited with status $?"; |
1e422769 |
274 | unlink $arg; |
275 | } |
276 | |
277 | # Reading from a file should be tainted |
278 | { |
9607fc9c |
279 | my $file = './TEST'; |
b3eb6a9b |
280 | test 32, open(FILE, $file), "Couldn't open '$file': $!"; |
1e422769 |
281 | |
282 | my $block; |
283 | sysread(FILE, $block, 100); |
9607fc9c |
284 | my $line = <FILE>; |
1e422769 |
285 | close FILE; |
b3eb6a9b |
286 | test 33, tainted $block; |
287 | test 34, tainted $line; |
1e422769 |
288 | } |
289 | |
c90c0ff4 |
290 | # Globs should be forbidden, except under VMS, |
291 | # which doesn't spawn an external program. |
72b16652 |
292 | if (1 # built-in glob |
293 | or $Is_VMS) { |
b3eb6a9b |
294 | for (35..36) { print "ok $_\n"; } |
c90c0ff4 |
295 | } |
296 | else { |
7bac28a0 |
297 | my @globs = eval { <*> }; |
b3eb6a9b |
298 | test 35, @globs == 0 && $@ =~ /^Insecure dependency/; |
1e422769 |
299 | |
7bac28a0 |
300 | @globs = eval { glob '*' }; |
b3eb6a9b |
301 | test 36, @globs == 0 && $@ =~ /^Insecure dependency/; |
1e422769 |
302 | } |
303 | |
304 | # Output of commands should be tainted |
305 | { |
306 | my $foo = `$echo abc`; |
b3eb6a9b |
307 | test 37, tainted $foo; |
1e422769 |
308 | } |
309 | |
310 | # Certain system variables should be tainted |
311 | { |
b3eb6a9b |
312 | test 38, all_tainted $^X, $0; |
1e422769 |
313 | } |
314 | |
315 | # Results of matching should all be untainted |
316 | { |
317 | my $foo = "abcdefghi" . $TAINT; |
b3eb6a9b |
318 | test 39, tainted $foo; |
1e422769 |
319 | |
320 | $foo =~ /def/; |
b3eb6a9b |
321 | test 40, not any_tainted $`, $&, $'; |
1e422769 |
322 | |
323 | $foo =~ /(...)(...)(...)/; |
b3eb6a9b |
324 | test 41, not any_tainted $1, $2, $3, $+; |
1e422769 |
325 | |
326 | my @bar = $foo =~ /(...)(...)(...)/; |
b3eb6a9b |
327 | test 42, not any_tainted @bar; |
1e422769 |
328 | |
b3eb6a9b |
329 | test 43, tainted $foo; # $foo should still be tainted! |
330 | test 44, $foo eq "abcdefghi"; |
1e422769 |
331 | } |
332 | |
333 | # Operations which affect files can't use tainted data. |
334 | { |
b3eb6a9b |
335 | test 45, eval { chmod 0, $TAINT } eq '', 'chmod'; |
336 | test 46, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
337 | |
9607fc9c |
338 | # There is no feature test in $Config{} for truncate, |
339 | # so we allow for the possibility that it's missing. |
b3eb6a9b |
340 | test 47, eval { truncate 'NoSuChFiLe', $TAINT0 } eq '', 'truncate'; |
341 | test 48, $@ =~ /^(?:Insecure dependency|truncate not implemented)/, $@; |
1e422769 |
342 | |
b3eb6a9b |
343 | test 49, eval { rename '', $TAINT } eq '', 'rename'; |
344 | test 50, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
345 | |
b3eb6a9b |
346 | test 51, eval { unlink $TAINT } eq '', 'unlink'; |
347 | test 52, $@ =~ /^Insecure dependency/, $@; |
9607fc9c |
348 | |
b3eb6a9b |
349 | test 53, eval { utime $TAINT } eq '', 'utime'; |
350 | test 54, $@ =~ /^Insecure dependency/, $@; |
48c036b1 |
351 | |
1e422769 |
352 | if ($Config{d_chown}) { |
b3eb6a9b |
353 | test 55, eval { chown -1, -1, $TAINT } eq '', 'chown'; |
354 | test 56, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
355 | } |
356 | else { |
b3eb6a9b |
357 | for (55..56) { print "ok $_ # Skipped: chown() is not available\n" } |
1e422769 |
358 | } |
359 | |
360 | if ($Config{d_link}) { |
b3eb6a9b |
361 | test 57, eval { link $TAINT, '' } eq '', 'link'; |
362 | test 58, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
363 | } |
364 | else { |
b3eb6a9b |
365 | for (57..58) { print "ok $_ # Skipped: link() is not available\n" } |
1e422769 |
366 | } |
367 | |
368 | if ($Config{d_symlink}) { |
b3eb6a9b |
369 | test 59, eval { symlink $TAINT, '' } eq '', 'symlink'; |
370 | test 60, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
371 | } |
372 | else { |
b3eb6a9b |
373 | for (59..60) { print "ok $_ # Skipped: symlink() is not available\n" } |
1e422769 |
374 | } |
375 | } |
376 | |
377 | # Operations which affect directories can't use tainted data. |
378 | { |
b3eb6a9b |
379 | test 61, eval { mkdir $TAINT0, $TAINT } eq '', 'mkdir'; |
380 | test 62, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
381 | |
b3eb6a9b |
382 | test 63, eval { rmdir $TAINT } eq '', 'rmdir'; |
383 | test 64, $@ =~ /^Insecure dependency/, $@; |
9607fc9c |
384 | |
b3eb6a9b |
385 | test 65, eval { chdir $TAINT } eq '', 'chdir'; |
386 | test 66, $@ =~ /^Insecure dependency/, $@; |
48c036b1 |
387 | |
1e422769 |
388 | if ($Config{d_chroot}) { |
b3eb6a9b |
389 | test 67, eval { chroot $TAINT } eq '', 'chroot'; |
390 | test 68, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
391 | } |
392 | else { |
b3eb6a9b |
393 | for (67..68) { print "ok $_ # Skipped: chroot() is not available\n" } |
1e422769 |
394 | } |
395 | } |
396 | |
397 | # Some operations using files can't use tainted data. |
398 | { |
399 | my $foo = "imaginary library" . $TAINT; |
b3eb6a9b |
400 | test 69, eval { require $foo } eq '', 'require'; |
401 | test 70, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
402 | |
403 | my $filename = "./taintB$$"; # NB: $filename isn't tainted! |
404 | END { unlink $filename if defined $filename } |
405 | $foo = $filename . $TAINT; |
406 | unlink $filename; # in any case |
407 | |
b3eb6a9b |
408 | test 71, eval { open FOO, $foo } eq '', 'open for read'; |
409 | test 72, $@ eq '', $@; # NB: This should be allowed |
9d116dd7 |
410 | |
411 | # Try first new style but allow also old style. |
61ae2fbf |
412 | test 73, $!{ENOENT} || |
413 | $! == 2 || # File not found |
414 | ($Is_Dos && $! == 22) || |
415 | ($^O eq 'mint' && $! == 33); |
1e422769 |
416 | |
b3eb6a9b |
417 | test 74, eval { open FOO, "> $foo" } eq '', 'open for write'; |
418 | test 75, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
419 | } |
420 | |
421 | # Commands to the system can't use tainted data |
422 | { |
423 | my $foo = $TAINT; |
424 | |
425 | if ($^O eq 'amigaos') { |
b3eb6a9b |
426 | for (76..79) { print "ok $_ # Skipped: open('|') is not available\n" } |
1e422769 |
427 | } |
428 | else { |
06eaf0bc |
429 | test 76, eval { open FOO, "| x$foo" } eq '', 'popen to'; |
b3eb6a9b |
430 | test 77, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
431 | |
06eaf0bc |
432 | test 78, eval { open FOO, "x$foo |" } eq '', 'popen from'; |
b3eb6a9b |
433 | test 79, $@ =~ /^Insecure dependency/, $@; |
48c036b1 |
434 | } |
1e422769 |
435 | |
b3eb6a9b |
436 | test 80, eval { exec $TAINT } eq '', 'exec'; |
437 | test 81, $@ =~ /^Insecure dependency/, $@; |
9607fc9c |
438 | |
b3eb6a9b |
439 | test 82, eval { system $TAINT } eq '', 'system'; |
440 | test 83, $@ =~ /^Insecure dependency/, $@; |
48c036b1 |
441 | |
1e422769 |
442 | $foo = "*"; |
443 | taint_these $foo; |
444 | |
b3eb6a9b |
445 | test 84, eval { `$echo 1$foo` } eq '', 'backticks'; |
446 | test 85, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
447 | |
448 | if ($Is_VMS) { # wildcard expansion doesn't invoke shell, so is safe |
b3eb6a9b |
449 | test 86, join('', eval { glob $foo } ) ne '', 'globbing'; |
450 | test 87, $@ eq '', $@; |
1e422769 |
451 | } |
452 | else { |
b3eb6a9b |
453 | for (86..87) { print "ok $_ # Skipped: this is not VMS\n"; } |
1e422769 |
454 | } |
455 | } |
456 | |
457 | # Operations which affect processes can't use tainted data. |
458 | { |
b3eb6a9b |
459 | test 88, eval { kill 0, $TAINT } eq '', 'kill'; |
460 | test 89, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
461 | |
462 | if ($Config{d_setpgrp}) { |
b3eb6a9b |
463 | test 90, eval { setpgrp 0, $TAINT } eq '', 'setpgrp'; |
464 | test 91, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
465 | } |
466 | else { |
b3eb6a9b |
467 | for (90..91) { print "ok $_ # Skipped: setpgrp() is not available\n" } |
1e422769 |
468 | } |
469 | |
470 | if ($Config{d_setprior}) { |
b3eb6a9b |
471 | test 92, eval { setpriority 0, $TAINT, $TAINT } eq '', 'setpriority'; |
472 | test 93, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
473 | } |
474 | else { |
b3eb6a9b |
475 | for (92..93) { print "ok $_ # Skipped: setpriority() is not available\n" } |
1e422769 |
476 | } |
477 | } |
478 | |
479 | # Some miscellaneous operations can't use tainted data. |
480 | { |
481 | if ($Config{d_syscall}) { |
b3eb6a9b |
482 | test 94, eval { syscall $TAINT } eq '', 'syscall'; |
483 | test 95, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
484 | } |
485 | else { |
b3eb6a9b |
486 | for (94..95) { print "ok $_ # Skipped: syscall() is not available\n" } |
1e422769 |
487 | } |
488 | |
489 | { |
490 | my $foo = "x" x 979; |
491 | taint_these $foo; |
492 | local *FOO; |
493 | my $temp = "./taintC$$"; |
494 | END { unlink $temp } |
b3eb6a9b |
495 | test 96, open(FOO, "> $temp"), "Couldn't open $temp for write: $!"; |
1e422769 |
496 | |
b3eb6a9b |
497 | test 97, eval { ioctl FOO, $TAINT, $foo } eq '', 'ioctl'; |
498 | test 98, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
499 | |
500 | if ($Config{d_fcntl}) { |
b3eb6a9b |
501 | test 99, eval { fcntl FOO, $TAINT, $foo } eq '', 'fcntl'; |
502 | test 100, $@ =~ /^Insecure dependency/, $@; |
1e422769 |
503 | } |
504 | else { |
b3eb6a9b |
505 | for (99..100) { print "ok $_ # Skipped: fcntl() is not available\n" } |
1e422769 |
506 | } |
507 | |
508 | close FOO; |
509 | } |
510 | } |
511 | |
9607fc9c |
512 | # Some tests involving references |
1e422769 |
513 | { |
514 | my $foo = 'abc' . $TAINT; |
515 | my $fooref = \$foo; |
b3eb6a9b |
516 | test 101, not tainted $fooref; |
517 | test 102, tainted $$fooref; |
518 | test 103, tainted $foo; |
1e422769 |
519 | } |
54310121 |
520 | |
521 | # Some tests involving assignment |
522 | { |
523 | my $foo = $TAINT0; |
524 | my $bar = $foo; |
b3eb6a9b |
525 | test 104, all_tainted $foo, $bar; |
526 | test 105, tainted($foo = $bar); |
527 | test 106, tainted($bar = $bar); |
528 | test 107, tainted($bar += $bar); |
529 | test 108, tainted($bar -= $bar); |
530 | test 109, tainted($bar *= $bar); |
531 | test 110, tainted($bar++); |
532 | test 111, tainted($bar /= $bar); |
533 | test 112, tainted($bar += 0); |
534 | test 113, tainted($bar -= 2); |
535 | test 114, tainted($bar *= -1); |
536 | test 115, tainted($bar /= 1); |
537 | test 116, tainted($bar--); |
538 | test 117, $bar == 0; |
54310121 |
539 | } |
a1f49e72 |
540 | |
541 | # Test assignment and return of lists |
542 | { |
543 | my @foo = ("A", "tainted" . $TAINT, "B"); |
b3eb6a9b |
544 | test 118, not tainted $foo[0]; |
545 | test 119, tainted $foo[1]; |
546 | test 120, not tainted $foo[2]; |
a1f49e72 |
547 | my @bar = @foo; |
b3eb6a9b |
548 | test 121, not tainted $bar[0]; |
549 | test 122, tainted $bar[1]; |
550 | test 123, not tainted $bar[2]; |
a1f49e72 |
551 | my @baz = eval { "A", "tainted" . $TAINT, "B" }; |
b3eb6a9b |
552 | test 124, not tainted $baz[0]; |
553 | test 125, tainted $baz[1]; |
554 | test 126, not tainted $baz[2]; |
a1f49e72 |
555 | my @plugh = eval q[ "A", "tainted" . $TAINT, "B" ]; |
b3eb6a9b |
556 | test 127, not tainted $plugh[0]; |
557 | test 128, tainted $plugh[1]; |
558 | test 129, not tainted $plugh[2]; |
a1f49e72 |
559 | my $nautilus = sub { "A", "tainted" . $TAINT, "B" }; |
b3eb6a9b |
560 | test 130, not tainted ((&$nautilus)[0]); |
561 | test 131, tainted ((&$nautilus)[1]); |
562 | test 132, not tainted ((&$nautilus)[2]); |
a1f49e72 |
563 | my @xyzzy = &$nautilus; |
b3eb6a9b |
564 | test 133, not tainted $xyzzy[0]; |
565 | test 134, tainted $xyzzy[1]; |
566 | test 135, not tainted $xyzzy[2]; |
a1f49e72 |
567 | my $red_october = sub { return "A", "tainted" . $TAINT, "B" }; |
b3eb6a9b |
568 | test 136, not tainted ((&$red_october)[0]); |
569 | test 137, tainted ((&$red_october)[1]); |
570 | test 138, not tainted ((&$red_october)[2]); |
a1f49e72 |
571 | my @corge = &$red_october; |
b3eb6a9b |
572 | test 139, not tainted $corge[0]; |
573 | test 140, tainted $corge[1]; |
574 | test 141, 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* |
5dec6e32 |
580 | if (eval { setpwent(); getpwent() }) { |
fb73857a |
581 | setpwent(); |
582 | my @getpwent = getpwent(); |
583 | die "getpwent: $!\n" unless (@getpwent); |
b3eb6a9b |
584 | test 142,( not tainted $getpwent[0] |
2959b6e3 |
585 | and tainted $getpwent[1] |
fb73857a |
586 | and not tainted $getpwent[2] |
587 | and not tainted $getpwent[3] |
588 | and not tainted $getpwent[4] |
589 | and not tainted $getpwent[5] |
3972a534 |
590 | and tainted $getpwent[6] # ge?cos |
fb73857a |
591 | and not tainted $getpwent[7] |
3972a534 |
592 | and tainted $getpwent[8]); # shell |
fb73857a |
593 | endpwent(); |
594 | } else { |
b3eb6a9b |
595 | for (142) { print "ok $_ # Skipped: getpwent() is not available\n" } |
fb73857a |
596 | } |
597 | |
598 | if ($Config{d_readdir}) { # pretty hard to imagine not |
599 | local(*D); |
600 | opendir(D, "op") or die "opendir: $!\n"; |
601 | my $readdir = readdir(D); |
b3eb6a9b |
602 | test 143, tainted $readdir; |
fb73857a |
603 | closedir(OP); |
604 | } else { |
b3eb6a9b |
605 | for (143) { print "ok $_ # Skipped: readdir() is not available\n" } |
fb73857a |
606 | } |
607 | |
608 | if ($Config{d_readlink} && $Config{d_symlink}) { |
609 | my $symlink = "sl$$"; |
610 | unlink($symlink); |
611 | symlink("/something/naughty", $symlink) or die "symlink: $!\n"; |
612 | my $readlink = readlink($symlink); |
b3eb6a9b |
613 | test 144, tainted $readlink; |
fb73857a |
614 | unlink($symlink); |
615 | } else { |
b3eb6a9b |
616 | for (144) { print "ok $_ # Skipped: readlink() or symlink() is not available\n"; } |
fb73857a |
617 | } |
618 | } |
619 | |
620 | # test bitwise ops (regression bug) |
621 | { |
622 | my $why = "y"; |
623 | my $j = "x" | $why; |
b3eb6a9b |
624 | test 145, not tainted $j; |
fb73857a |
625 | $why = $TAINT."y"; |
626 | $j = "x" | $why; |
b3eb6a9b |
627 | test 146, tainted $j; |
fb73857a |
628 | } |
629 | |
48c036b1 |
630 | # test target of substitution (regression bug) |
631 | { |
632 | my $why = $TAINT."y"; |
633 | $why =~ s/y/z/; |
b3eb6a9b |
634 | test 147, tainted $why; |
48c036b1 |
635 | |
636 | my $z = "[z]"; |
637 | $why =~ s/$z/zee/; |
b3eb6a9b |
638 | test 148, tainted $why; |
48c036b1 |
639 | |
640 | $why =~ s/e/'-'.$$/ge; |
b3eb6a9b |
641 | test 149, tainted $why; |
48c036b1 |
642 | } |
d929ce6f |
643 | |
644 | # test shmread |
645 | { |
c9f931b8 |
646 | unless ($ipcsysv) { |
647 | print "ok 150 # skipped: no IPC::SysV\n"; |
648 | last; |
649 | } |
be3174d2 |
650 | if ($Config{'extensions'} =~ /\bIPC\/SysV\b/ && $Config{d_shm}) { |
b9d1c439 |
651 | no strict 'subs'; |
d929ce6f |
652 | my $sent = "foobar"; |
653 | my $rcvd; |
654 | my $size = 2000; |
c2e66d9e |
655 | my $id = shmget(IPC_PRIVATE, $size, S_IRWXU); |
656 | |
41d6edb2 |
657 | if (defined $id) { |
658 | if (shmwrite($id, $sent, 0, 60)) { |
659 | if (shmread($id, $rcvd, 0, 60)) { |
d929ce6f |
660 | substr($rcvd, index($rcvd, "\0")) = ''; |
661 | } else { |
662 | warn "# shmread failed: $!\n"; |
663 | } |
664 | } else { |
665 | warn "# shmwrite failed: $!\n"; |
666 | } |
c2e66d9e |
667 | shmctl($id, IPC_RMID, 0) or warn "# shmctl failed: $!\n"; |
41d6edb2 |
668 | } else { |
669 | warn "# shmget failed: $!\n"; |
d929ce6f |
670 | } |
671 | |
672 | if ($rcvd eq $sent) { |
673 | test 150, tainted $rcvd; |
674 | } else { |
675 | print "ok 150 # Skipped: SysV shared memory operation failed\n"; |
676 | } |
677 | } else { |
41d6edb2 |
678 | print "ok 150 # Skipped: SysV shared memory is not available\n"; |
d929ce6f |
679 | } |
680 | } |
41d6edb2 |
681 | |
682 | # test msgrcv |
683 | { |
c9f931b8 |
684 | unless ($ipcsysv) { |
685 | print "ok 151 # skipped: no IPC::SysV\n"; |
686 | last; |
687 | } |
be3174d2 |
688 | if ($Config{'extensions'} =~ /\bIPC\/SysV\b/ && $Config{d_msg}) { |
b9d1c439 |
689 | no strict 'subs'; |
41d6edb2 |
690 | my $id = msgget(IPC_PRIVATE, IPC_CREAT | S_IRWXU); |
691 | |
692 | my $sent = "message"; |
693 | my $type_sent = 1234; |
694 | my $rcvd; |
695 | my $type_rcvd; |
696 | |
697 | if (defined $id) { |
698 | if (msgsnd($id, pack("l! a*", $type_sent, $sent), 0)) { |
699 | if (msgrcv($id, $rcvd, 60, 0, 0)) { |
700 | ($type_rcvd, $rcvd) = unpack("l! a*", $rcvd); |
701 | } else { |
702 | warn "# msgrcv failed\n"; |
703 | } |
704 | } else { |
705 | warn "# msgsnd failed\n"; |
706 | } |
c2e66d9e |
707 | msgctl($id, IPC_RMID, 0) or warn "# msgctl failed: $!\n"; |
41d6edb2 |
708 | } else { |
709 | warn "# msgget failed\n"; |
710 | } |
711 | |
712 | if ($rcvd eq $sent && $type_sent == $type_rcvd) { |
713 | test 151, tainted $rcvd; |
714 | } else { |
715 | print "ok 151 # Skipped: SysV message queue operation failed\n"; |
716 | } |
717 | } else { |
718 | print "ok 151 # Skipped: SysV message queues are not available\n"; |
719 | } |
720 | } |
721 | |
3887d568 |
722 | { |
723 | # bug id 20001004.006 |
724 | |
725 | open IN, "./TEST" or warn "$0: cannot read ./TEST: $!" ; |
726 | local $/; |
727 | my $a = <IN>; |
728 | my $b = <IN>; |
729 | print "not " unless tainted($a) && tainted($b) && !defined($b); |
730 | print "ok 152\n"; |
27c9684d |
731 | close IN; |
3887d568 |
732 | } |
27c9684d |
733 | |
734 | { |
735 | # bug id 20001004.007 |
736 | |
737 | open IN, "./TEST" or warn "$0: cannot read ./TEST: $!" ; |
738 | my $a = <IN>; |
739 | |
740 | my $c = { a => 42, |
741 | b => $a }; |
742 | print "not " unless !tainted($c->{a}) && tainted($c->{b}); |
743 | print "ok 153\n"; |
744 | |
745 | my $d = { a => $a, |
746 | b => 42 }; |
747 | print "not " unless tainted($d->{a}) && !tainted($d->{b}); |
748 | print "ok 154\n"; |
749 | |
750 | my $e = { a => 42, |
751 | b => { c => $a, d => 42 } }; |
752 | print "not " unless !tainted($e->{a}) && |
753 | !tainted($e->{b}) && |
754 | tainted($e->{b}->{c}) && |
755 | !tainted($e->{b}->{d}); |
756 | print "ok 155\n"; |
757 | |
758 | close IN; |
759 | } |
760 | |
b94c04ac |
761 | { |
762 | # bug id 20010519.003 |
763 | |
248c32c0 |
764 | BEGIN { |
765 | use vars qw($has_fcntl); |
766 | eval { require Fcntl; import Fcntl; }; |
767 | unless ($@) { |
768 | $has_fcntl = 1; |
769 | } |
770 | } |
b94c04ac |
771 | |
248c32c0 |
772 | unless ($has_fcntl) { |
773 | for (156..173) { |
774 | print "ok $_ # Skip: no Fcntl (no dynaloading?)\n"; |
775 | } |
776 | } else { |
777 | my $evil = "foo" . $TAINT; |
778 | |
779 | eval { sysopen(my $ro, $evil, &O_RDONLY) }; |
780 | test 156, $@ !~ /^Insecure dependency/, $@; |
781 | |
782 | eval { sysopen(my $wo, $evil, &O_WRONLY) }; |
783 | test 157, $@ =~ /^Insecure dependency/, $@; |
784 | |
785 | eval { sysopen(my $rw, $evil, &O_RDWR) }; |
786 | test 158, $@ =~ /^Insecure dependency/, $@; |
787 | |
788 | eval { sysopen(my $ap, $evil, &O_APPEND) }; |
789 | test 159, $@ =~ /^Insecure dependency/, $@; |
790 | |
791 | eval { sysopen(my $cr, $evil, &O_CREAT) }; |
792 | test 160, $@ =~ /^Insecure dependency/, $@; |
793 | |
794 | eval { sysopen(my $tr, $evil, &O_TRUNC) }; |
795 | test 161, $@ =~ /^Insecure dependency/, $@; |
796 | |
797 | eval { sysopen(my $ro, "foo", &O_RDONLY | $evil) }; |
798 | test 162, $@ !~ /^Insecure dependency/, $@; |
799 | |
800 | eval { sysopen(my $wo, "foo", &O_WRONLY | $evil) }; |
801 | test 163, $@ =~ /^Insecure dependency/, $@; |
802 | |
803 | eval { sysopen(my $rw, "foo", &O_RDWR | $evil) }; |
804 | test 164, $@ =~ /^Insecure dependency/, $@; |
805 | |
806 | eval { sysopen(my $ap, "foo", &O_APPEND | $evil) }; |
807 | test 165, $@ =~ /^Insecure dependency/, $@; |
808 | |
809 | eval { sysopen(my $cr, "foo", &O_CREAT | $evil) }; |
810 | test 166, $@ =~ /^Insecure dependency/, $@; |
811 | |
812 | eval { sysopen(my $tr, "foo", &O_TRUNC | $evil) }; |
813 | test 167, $@ =~ /^Insecure dependency/, $@; |
814 | |
815 | eval { sysopen(my $ro, "foo", &O_RDONLY, $evil) }; |
816 | test 168, $@ !~ /^Insecure dependency/, $@; |
817 | |
818 | eval { sysopen(my $wo, "foo", &O_WRONLY, $evil) }; |
819 | test 169, $@ =~ /^Insecure dependency/, $@; |
820 | |
821 | eval { sysopen(my $rw, "foo", &O_RDWR, $evil) }; |
822 | test 170, $@ =~ /^Insecure dependency/, $@; |
823 | |
824 | eval { sysopen(my $ap, "foo", &O_APPEND, $evil) }; |
825 | test 171, $@ =~ /^Insecure dependency/, $@; |
826 | |
827 | eval { sysopen(my $cr, "foo", &O_CREAT, $evil) }; |
828 | test 172, $@ =~ /^Insecure dependency/, $@; |
829 | |
830 | eval { sysopen(my $tr, "foo", &O_TRUNC, $evil) }; |
831 | test 173, $@ =~ /^Insecure dependency/, $@; |
832 | |
833 | unlink("foo"); # not unlink($evil), because that would fail... |
834 | } |
b94c04ac |
835 | } |
836 | |
65811bc3 |
837 | { |
838 | # bug 20010526.004 |
839 | |
840 | use warnings; |
841 | |
842 | $SIG{__WARN__} = sub { print "not " }; |
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 | |
853 | print "ok 174\n"; |
854 | } |
855 | |
9e1b5a4e |
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 | |
883 | print $i == 1 ? "ok 175\n" : "not ok 175\n" |
884 | |
885 | } |
886 | |
8852b6d2 |
887 | { |
888 | # Check that all environment variables are tainted. |
889 | my @untainted; |
890 | while (my ($k, $v) = each %ENV) { |
891 | if (!tainted($v) && |
892 | # These we have untainted explicitly earlier. |
893 | $k !~ /^(BASH_ENV|CDPATH|ENV|IFS|PATH|TEMP|TERM|TMP)$/) { |
894 | push @untainted, "# '$k' = '$v'\n"; |
895 | } |
896 | } |
897 | print @untainted == 0 ? "ok 176\n" : "not ok 176\n"; |
898 | print "# untainted:\n", @untainted if @untainted; |
899 | } |
9e1b5a4e |
900 | |
901 | |
7c36658b |
902 | ok( ${^TAINT}, '$^TAINT is on' ); |
903 | |
904 | eval { ${^TAINT} = 0 }; |
905 | ok( ${^TAINT}, '$^TAINT is not assignable' ); |
906 | ok( $@ =~ /^Modification of a read-only value attempted/, |
c212f17f |
907 | 'Assigning to ${^TAINT} fails' ); |
7c36658b |
908 | |
e08e52cf |
909 | { |
910 | # bug 20011111.105 |
911 | |
912 | my $re1 = qr/x$TAINT/; |
913 | test 180, tainted $re1; |
914 | |
915 | my $re2 = qr/^$re1\z/; |
916 | test 181, tainted $re2; |
917 | |
918 | my $re3 = "$re2"; |
919 | test 182, tainted $re3; |
920 | } |
52a55424 |
921 | |
922 | |
923 | { |
924 | # bug 20010221.005 |
925 | local $ENV{PATH} .= $TAINT; |
926 | eval { system { "echo" } "/arg0", "arg1" }; |
927 | test 183, $@ =~ /^Insecure \$ENV/; |
928 | } |