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Re: [ID 20010730.010] FETCH called twice with -T
[perl5.git] / t / op / taint.t
CommitLineData
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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
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7# better than having no tests at all, right?
8#
9
10BEGIN {
11 chdir 't' if -d 't';
20822f61 12 @INC = '../lib';
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13}
14
15use strict;
16use Config;
17
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18$| = 1;
19
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20# We do not want the whole taint.t to fail
21# just because Errno possibly failing.
22eval { require Errno; import Errno };
23
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JH
24use vars qw($ipcsysv); # did we manage to load IPC::SysV?
25
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26BEGIN {
27 if ($^O eq 'VMS' && !defined($Config{d_setenv})) {
28 $ENV{PATH} = $ENV{PATH};
29 $ENV{TERM} = $ENV{TERM} ne ''? $ENV{TERM} : 'dummy';
30 }
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31 if ($Config{'extensions'} =~ /\bIPC\/SysV\b/
32 && ($Config{d_shm} || $Config{d_msg})) {
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33 eval { require IPC::SysV };
34 unless ($@) {
35 $ipcsysv++;
36 IPC::SysV->import(qw(IPC_PRIVATE IPC_RMID IPC_CREAT S_IRWXU));
37 }
b9d1c439 38 }
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CB
39}
40
1e422769 41my $Is_VMS = $^O eq 'VMS';
68dc0745 42my $Is_MSWin32 = $^O eq 'MSWin32';
2986a63f 43my $Is_NetWare = $^O eq 'NetWare';
39e571d4 44my $Is_Dos = $^O eq 'dos';
343d3f38 45my $Is_Cygwin = $^O eq 'cygwin';
68dc0745 46my $Invoke_Perl = $Is_VMS ? 'MCR Sys$Disk:[]Perl.' :
2986a63f
JH
47 ($Is_MSWin32 ? '.\perl' :
48 ($Is_NetWare ? 'perl' : './perl'));
c90c0ff4 49my @MoreEnv = qw/IFS CDPATH ENV BASH_ENV/;
7bac28a0 50
1e422769 51if ($Is_VMS) {
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52 my (%old, $x);
53 for $x ('DCL$PATH', @MoreEnv) {
54 ($old{$x}) = $ENV{$x} =~ /^(.*)$/ if exists $ENV{$x};
55 }
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56 eval <<EndOfCleanup;
57 END {
3eeba6fb 58 \$ENV{PATH} = '' if $Config{d_setenv};
1e422769 59 warn "# Note: logical name 'PATH' may have been deleted\n";
562a7b0c 60 \@ENV{keys %old} = values %old;
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61 }
62EndOfCleanup
63}
64
65# Sources of taint:
66# The empty tainted value, for tainting strings
67my $TAINT = substr($^X, 0, 0);
68# A tainted zero, useful for tainting numbers
69my $TAINT0 = 0 + $TAINT;
70
71# This taints each argument passed. All must be lvalues.
72# Side effect: It also stringifies them. :-(
73sub taint_these (@) {
74 for (@_) { $_ .= $TAINT }
75}
76
77# How to identify taint when you see it
78sub any_tainted (@) {
79 not eval { join("",@_), kill 0; 1 };
80}
81sub tainted ($) {
82 any_tainted @_;
83}
84sub all_tainted (@) {
85 for (@_) { return 0 unless tainted $_ }
86 1;
87}
88
89sub test ($$;$) {
90 my($serial, $boolean, $diag) = @_;
91 if ($boolean) {
92 print "ok $serial\n";
93 } else {
94 print "not ok $serial\n";
95 for (split m/^/m, $diag) {
96 print "# $_";
97 }
9607fc9c 98 print "\n" unless
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99 $diag eq ''
100 or substr($diag, -1) eq "\n";
101 }
102}
103
104# We need an external program to call.
2986a63f 105my $ECHO = ($Is_MSWin32 ? ".\\echo$$" : ($Is_NetWare ? "echo$$" : "./echo$$"));
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106END { unlink $ECHO }
107open PROG, "> $ECHO" or die "Can't create $ECHO: $!";
108print PROG 'print "@ARGV\n"', "\n";
109close PROG;
110my $echo = "$Invoke_Perl $ECHO";
111
65811bc3 112print "1..174\n";
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113
114# First, let's make sure that Perl is checking the dangerous
115# environment variables. Maybe they aren't set yet, so we'll
116# taint them ourselves.
117{
118 $ENV{'DCL$PATH'} = '' if $Is_VMS;
119
7bac28a0 120 $ENV{PATH} = '';
c90c0ff4 121 delete @ENV{@MoreEnv};
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122 $ENV{TERM} = 'dumb';
123
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124 if ($Is_Cygwin) {
125 system("/usr/bin/cp /usr/bin/cygwin1.dll .") &&
126 die "$0: failed to cp cygwin1.dll: $!\n";
127 END { unlink "cygwin1.dll" } # yes, done for all platforms...
128 }
129
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PP
130 test 1, eval { `$echo 1` } eq "1\n";
131
2986a63f 132 if ($Is_MSWin32 || $Is_NetWare || $Is_VMS || $Is_Dos) {
7bac28a0 133 print "# Environment tainting tests skipped\n";
c90c0ff4 134 for (2..5) { print "ok $_\n" }
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135 }
136 else {
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137 my @vars = ('PATH', @MoreEnv);
138 while (my $v = $vars[0]) {
139 local $ENV{$v} = $TAINT;
140 last if eval { `$echo 1` };
141 last unless $@ =~ /^Insecure \$ENV{$v}/;
142 shift @vars;
143 }
144 test 2, !@vars, "\$$vars[0]";
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145
146 # tainted $TERM is unsafe only if it contains metachars
147 local $ENV{TERM};
148 $ENV{TERM} = 'e=mc2';
149 test 3, eval { `$echo 1` } eq "1\n";
150 $ENV{TERM} = 'e=mc2' . $TAINT;
151 test 4, eval { `$echo 1` } eq '';
152 test 5, $@ =~ /^Insecure \$ENV{TERM}/, $@;
5aabfad6 153 }
7bac28a0 154
9607fc9c 155 my $tmp;
2986a63f 156 if ($^O eq 'os2' || $^O eq 'amigaos' || $Is_MSWin32 || $Is_NetWare || $Is_Dos) {
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157 print "# all directories are writeable\n";
158 }
159 else {
9607fc9c 160 $tmp = (grep { defined and -d and (stat _)[2] & 2 }
099f76bb 161 qw(sys$scratch /tmp /var/tmp /usr/tmp),
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162 @ENV{qw(TMP TEMP)})[0]
163 or print "# can't find world-writeable directory to test PATH\n";
164 }
165
385588b3 166 if ($tmp) {
7bac28a0 167 local $ENV{PATH} = $tmp;
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168 test 6, eval { `$echo 1` } eq '';
169 test 7, $@ =~ /^Insecure directory in \$ENV{PATH}/, $@;
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170 }
171 else {
fac76ed7 172 for (6..7) { print "ok $_ # Skipped: all directories are writeable\n" }
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173 }
174
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175 if ($Is_VMS) {
176 $ENV{'DCL$PATH'} = $TAINT;
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177 test 8, eval { `$echo 1` } eq '';
178 test 9, $@ =~ /^Insecure \$ENV{DCL\$PATH}/, $@;
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179 if ($tmp) {
180 $ENV{'DCL$PATH'} = $tmp;
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181 test 10, eval { `$echo 1` } eq '';
182 test 11, $@ =~ /^Insecure directory in \$ENV{DCL\$PATH}/, $@;
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183 }
184 else {
fac76ed7 185 for (10..11) { print "ok $_ # Skipped: can't find world-writeable directory to test DCL\$PATH\n" }
9607fc9c 186 }
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187 $ENV{'DCL$PATH'} = '';
188 }
189 else {
fac76ed7 190 for (8..11) { print "ok $_ # Skipped: This is not VMS\n"; }
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191 }
192}
193
194# Let's see that we can taint and untaint as needed.
195{
196 my $foo = $TAINT;
c90c0ff4 197 test 12, tainted $foo;
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198
199 # That was a sanity check. If it failed, stop the insanity!
200 die "Taint checks don't seem to be enabled" unless tainted $foo;
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201
202 $foo = "foo";
c90c0ff4 203 test 13, not tainted $foo;
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204
205 taint_these($foo);
c90c0ff4 206 test 14, tainted $foo;
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207
208 my @list = 1..10;
c90c0ff4 209 test 15, not any_tainted @list;
1e422769 210 taint_these @list[1,3,5,7,9];
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PP
211 test 16, any_tainted @list;
212 test 17, all_tainted @list[1,3,5,7,9];
213 test 18, not any_tainted @list[0,2,4,6,8];
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214
215 ($foo) = $foo =~ /(.+)/;
c90c0ff4 216 test 19, not tainted $foo;
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217
218 $foo = $1 if ('bar' . $TAINT) =~ /(.+)/;
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PP
219 test 20, not tainted $foo;
220 test 21, $foo eq 'bar';
1e422769 221
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GS
222 {
223 use re 'taint';
224
225 ($foo) = ('bar' . $TAINT) =~ /(.+)/;
226 test 22, tainted $foo;
227 test 23, $foo eq 'bar';
228
229 $foo = $1 if ('bar' . $TAINT) =~ /(.+)/;
230 test 24, tainted $foo;
231 test 25, $foo eq 'bar';
232 }
233
234 $foo = $1 if 'bar' =~ /(.+)$TAINT/;
235 test 26, tainted $foo;
236 test 27, $foo eq 'bar';
48c036b1 237
1e422769 238 my $pi = 4 * atan2(1,1) + $TAINT0;
b3eb6a9b 239 test 28, tainted $pi;
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240
241 ($pi) = $pi =~ /(\d+\.\d+)/;
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242 test 29, not tainted $pi;
243 test 30, sprintf("%.5f", $pi) eq '3.14159';
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244}
245
246# How about command-line arguments? The problem is that we don't
247# always get some, so we'll run another process with some.
248{
249 my $arg = "./arg$$";
250 open PROG, "> $arg" or die "Can't create $arg: $!";
251 print PROG q{
252 eval { join('', @ARGV), kill 0 };
253 exit 0 if $@ =~ /^Insecure dependency/;
254 print "# Oops: \$@ was [$@]\n";
255 exit 1;
256 };
257 close PROG;
258 print `$Invoke_Perl "-T" $arg and some suspect arguments`;
b3eb6a9b 259 test 31, !$?, "Exited with status $?";
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260 unlink $arg;
261}
262
263# Reading from a file should be tainted
264{
9607fc9c 265 my $file = './TEST';
b3eb6a9b 266 test 32, open(FILE, $file), "Couldn't open '$file': $!";
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267
268 my $block;
269 sysread(FILE, $block, 100);
9607fc9c 270 my $line = <FILE>;
1e422769 271 close FILE;
b3eb6a9b
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272 test 33, tainted $block;
273 test 34, tainted $line;
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274}
275
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PP
276# Globs should be forbidden, except under VMS,
277# which doesn't spawn an external program.
72b16652
GS
278if (1 # built-in glob
279 or $Is_VMS) {
b3eb6a9b 280 for (35..36) { print "ok $_\n"; }
c90c0ff4
PP
281}
282else {
7bac28a0 283 my @globs = eval { <*> };
b3eb6a9b 284 test 35, @globs == 0 && $@ =~ /^Insecure dependency/;
1e422769 285
7bac28a0 286 @globs = eval { glob '*' };
b3eb6a9b 287 test 36, @globs == 0 && $@ =~ /^Insecure dependency/;
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288}
289
290# Output of commands should be tainted
291{
292 my $foo = `$echo abc`;
b3eb6a9b 293 test 37, tainted $foo;
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294}
295
296# Certain system variables should be tainted
297{
b3eb6a9b 298 test 38, all_tainted $^X, $0;
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299}
300
301# Results of matching should all be untainted
302{
303 my $foo = "abcdefghi" . $TAINT;
b3eb6a9b 304 test 39, tainted $foo;
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305
306 $foo =~ /def/;
b3eb6a9b 307 test 40, not any_tainted $`, $&, $';
1e422769
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308
309 $foo =~ /(...)(...)(...)/;
b3eb6a9b 310 test 41, not any_tainted $1, $2, $3, $+;
1e422769
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311
312 my @bar = $foo =~ /(...)(...)(...)/;
b3eb6a9b 313 test 42, not any_tainted @bar;
1e422769 314
b3eb6a9b
GS
315 test 43, tainted $foo; # $foo should still be tainted!
316 test 44, $foo eq "abcdefghi";
1e422769
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317}
318
319# Operations which affect files can't use tainted data.
320{
b3eb6a9b
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321 test 45, eval { chmod 0, $TAINT } eq '', 'chmod';
322 test 46, $@ =~ /^Insecure dependency/, $@;
1e422769 323
9607fc9c
PP
324 # There is no feature test in $Config{} for truncate,
325 # so we allow for the possibility that it's missing.
b3eb6a9b
GS
326 test 47, eval { truncate 'NoSuChFiLe', $TAINT0 } eq '', 'truncate';
327 test 48, $@ =~ /^(?:Insecure dependency|truncate not implemented)/, $@;
1e422769 328
b3eb6a9b
GS
329 test 49, eval { rename '', $TAINT } eq '', 'rename';
330 test 50, $@ =~ /^Insecure dependency/, $@;
1e422769 331
b3eb6a9b
GS
332 test 51, eval { unlink $TAINT } eq '', 'unlink';
333 test 52, $@ =~ /^Insecure dependency/, $@;
9607fc9c 334
b3eb6a9b
GS
335 test 53, eval { utime $TAINT } eq '', 'utime';
336 test 54, $@ =~ /^Insecure dependency/, $@;
48c036b1 337
1e422769 338 if ($Config{d_chown}) {
b3eb6a9b
GS
339 test 55, eval { chown -1, -1, $TAINT } eq '', 'chown';
340 test 56, $@ =~ /^Insecure dependency/, $@;
1e422769
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341 }
342 else {
b3eb6a9b 343 for (55..56) { print "ok $_ # Skipped: chown() is not available\n" }
1e422769
PP
344 }
345
346 if ($Config{d_link}) {
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347 test 57, eval { link $TAINT, '' } eq '', 'link';
348 test 58, $@ =~ /^Insecure dependency/, $@;
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349 }
350 else {
b3eb6a9b 351 for (57..58) { print "ok $_ # Skipped: link() is not available\n" }
1e422769
PP
352 }
353
354 if ($Config{d_symlink}) {
b3eb6a9b
GS
355 test 59, eval { symlink $TAINT, '' } eq '', 'symlink';
356 test 60, $@ =~ /^Insecure dependency/, $@;
1e422769
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357 }
358 else {
b3eb6a9b 359 for (59..60) { print "ok $_ # Skipped: symlink() is not available\n" }
1e422769
PP
360 }
361}
362
363# Operations which affect directories can't use tainted data.
364{
b3eb6a9b
GS
365 test 61, eval { mkdir $TAINT0, $TAINT } eq '', 'mkdir';
366 test 62, $@ =~ /^Insecure dependency/, $@;
1e422769 367
b3eb6a9b
GS
368 test 63, eval { rmdir $TAINT } eq '', 'rmdir';
369 test 64, $@ =~ /^Insecure dependency/, $@;
9607fc9c 370
b3eb6a9b
GS
371 test 65, eval { chdir $TAINT } eq '', 'chdir';
372 test 66, $@ =~ /^Insecure dependency/, $@;
48c036b1 373
1e422769 374 if ($Config{d_chroot}) {
b3eb6a9b
GS
375 test 67, eval { chroot $TAINT } eq '', 'chroot';
376 test 68, $@ =~ /^Insecure dependency/, $@;
1e422769
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377 }
378 else {
b3eb6a9b 379 for (67..68) { print "ok $_ # Skipped: chroot() is not available\n" }
1e422769
PP
380 }
381}
382
383# Some operations using files can't use tainted data.
384{
385 my $foo = "imaginary library" . $TAINT;
b3eb6a9b
GS
386 test 69, eval { require $foo } eq '', 'require';
387 test 70, $@ =~ /^Insecure dependency/, $@;
1e422769
PP
388
389 my $filename = "./taintB$$"; # NB: $filename isn't tainted!
390 END { unlink $filename if defined $filename }
391 $foo = $filename . $TAINT;
392 unlink $filename; # in any case
393
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394 test 71, eval { open FOO, $foo } eq '', 'open for read';
395 test 72, $@ eq '', $@; # NB: This should be allowed
9d116dd7
JH
396
397 # Try first new style but allow also old style.
61ae2fbf
JH
398 test 73, $!{ENOENT} ||
399 $! == 2 || # File not found
400 ($Is_Dos && $! == 22) ||
401 ($^O eq 'mint' && $! == 33);
1e422769 402
b3eb6a9b
GS
403 test 74, eval { open FOO, "> $foo" } eq '', 'open for write';
404 test 75, $@ =~ /^Insecure dependency/, $@;
1e422769
PP
405}
406
407# Commands to the system can't use tainted data
408{
409 my $foo = $TAINT;
410
411 if ($^O eq 'amigaos') {
b3eb6a9b 412 for (76..79) { print "ok $_ # Skipped: open('|') is not available\n" }
1e422769
PP
413 }
414 else {
06eaf0bc 415 test 76, eval { open FOO, "| x$foo" } eq '', 'popen to';
b3eb6a9b 416 test 77, $@ =~ /^Insecure dependency/, $@;
1e422769 417
06eaf0bc 418 test 78, eval { open FOO, "x$foo |" } eq '', 'popen from';
b3eb6a9b 419 test 79, $@ =~ /^Insecure dependency/, $@;
48c036b1 420 }
1e422769 421
b3eb6a9b
GS
422 test 80, eval { exec $TAINT } eq '', 'exec';
423 test 81, $@ =~ /^Insecure dependency/, $@;
9607fc9c 424
b3eb6a9b
GS
425 test 82, eval { system $TAINT } eq '', 'system';
426 test 83, $@ =~ /^Insecure dependency/, $@;
48c036b1 427
1e422769
PP
428 $foo = "*";
429 taint_these $foo;
430
b3eb6a9b
GS
431 test 84, eval { `$echo 1$foo` } eq '', 'backticks';
432 test 85, $@ =~ /^Insecure dependency/, $@;
1e422769
PP
433
434 if ($Is_VMS) { # wildcard expansion doesn't invoke shell, so is safe
b3eb6a9b
GS
435 test 86, join('', eval { glob $foo } ) ne '', 'globbing';
436 test 87, $@ eq '', $@;
1e422769
PP
437 }
438 else {
b3eb6a9b 439 for (86..87) { print "ok $_ # Skipped: this is not VMS\n"; }
1e422769
PP
440 }
441}
442
443# Operations which affect processes can't use tainted data.
444{
b3eb6a9b
GS
445 test 88, eval { kill 0, $TAINT } eq '', 'kill';
446 test 89, $@ =~ /^Insecure dependency/, $@;
1e422769
PP
447
448 if ($Config{d_setpgrp}) {
b3eb6a9b
GS
449 test 90, eval { setpgrp 0, $TAINT } eq '', 'setpgrp';
450 test 91, $@ =~ /^Insecure dependency/, $@;
1e422769
PP
451 }
452 else {
b3eb6a9b 453 for (90..91) { print "ok $_ # Skipped: setpgrp() is not available\n" }
1e422769
PP
454 }
455
456 if ($Config{d_setprior}) {
b3eb6a9b
GS
457 test 92, eval { setpriority 0, $TAINT, $TAINT } eq '', 'setpriority';
458 test 93, $@ =~ /^Insecure dependency/, $@;
1e422769
PP
459 }
460 else {
b3eb6a9b 461 for (92..93) { print "ok $_ # Skipped: setpriority() is not available\n" }
1e422769
PP
462 }
463}
464
465# Some miscellaneous operations can't use tainted data.
466{
467 if ($Config{d_syscall}) {
b3eb6a9b
GS
468 test 94, eval { syscall $TAINT } eq '', 'syscall';
469 test 95, $@ =~ /^Insecure dependency/, $@;
1e422769
PP
470 }
471 else {
b3eb6a9b 472 for (94..95) { print "ok $_ # Skipped: syscall() is not available\n" }
1e422769
PP
473 }
474
475 {
476 my $foo = "x" x 979;
477 taint_these $foo;
478 local *FOO;
479 my $temp = "./taintC$$";
480 END { unlink $temp }
b3eb6a9b 481 test 96, open(FOO, "> $temp"), "Couldn't open $temp for write: $!";
1e422769 482
b3eb6a9b
GS
483 test 97, eval { ioctl FOO, $TAINT, $foo } eq '', 'ioctl';
484 test 98, $@ =~ /^Insecure dependency/, $@;
1e422769
PP
485
486 if ($Config{d_fcntl}) {
b3eb6a9b
GS
487 test 99, eval { fcntl FOO, $TAINT, $foo } eq '', 'fcntl';
488 test 100, $@ =~ /^Insecure dependency/, $@;
1e422769
PP
489 }
490 else {
b3eb6a9b 491 for (99..100) { print "ok $_ # Skipped: fcntl() is not available\n" }
1e422769
PP
492 }
493
494 close FOO;
495 }
496}
497
9607fc9c 498# Some tests involving references
1e422769
PP
499{
500 my $foo = 'abc' . $TAINT;
501 my $fooref = \$foo;
b3eb6a9b
GS
502 test 101, not tainted $fooref;
503 test 102, tainted $$fooref;
504 test 103, tainted $foo;
1e422769 505}
54310121
PP
506
507# Some tests involving assignment
508{
509 my $foo = $TAINT0;
510 my $bar = $foo;
b3eb6a9b
GS
511 test 104, all_tainted $foo, $bar;
512 test 105, tainted($foo = $bar);
513 test 106, tainted($bar = $bar);
514 test 107, tainted($bar += $bar);
515 test 108, tainted($bar -= $bar);
516 test 109, tainted($bar *= $bar);
517 test 110, tainted($bar++);
518 test 111, tainted($bar /= $bar);
519 test 112, tainted($bar += 0);
520 test 113, tainted($bar -= 2);
521 test 114, tainted($bar *= -1);
522 test 115, tainted($bar /= 1);
523 test 116, tainted($bar--);
524 test 117, $bar == 0;
54310121 525}
a1f49e72
CS
526
527# Test assignment and return of lists
528{
529 my @foo = ("A", "tainted" . $TAINT, "B");
b3eb6a9b
GS
530 test 118, not tainted $foo[0];
531 test 119, tainted $foo[1];
532 test 120, not tainted $foo[2];
a1f49e72 533 my @bar = @foo;
b3eb6a9b
GS
534 test 121, not tainted $bar[0];
535 test 122, tainted $bar[1];
536 test 123, not tainted $bar[2];
a1f49e72 537 my @baz = eval { "A", "tainted" . $TAINT, "B" };
b3eb6a9b
GS
538 test 124, not tainted $baz[0];
539 test 125, tainted $baz[1];
540 test 126, not tainted $baz[2];
a1f49e72 541 my @plugh = eval q[ "A", "tainted" . $TAINT, "B" ];
b3eb6a9b
GS
542 test 127, not tainted $plugh[0];
543 test 128, tainted $plugh[1];
544 test 129, not tainted $plugh[2];
a1f49e72 545 my $nautilus = sub { "A", "tainted" . $TAINT, "B" };
b3eb6a9b
GS
546 test 130, not tainted ((&$nautilus)[0]);
547 test 131, tainted ((&$nautilus)[1]);
548 test 132, not tainted ((&$nautilus)[2]);
a1f49e72 549 my @xyzzy = &$nautilus;
b3eb6a9b
GS
550 test 133, not tainted $xyzzy[0];
551 test 134, tainted $xyzzy[1];
552 test 135, not tainted $xyzzy[2];
a1f49e72 553 my $red_october = sub { return "A", "tainted" . $TAINT, "B" };
b3eb6a9b
GS
554 test 136, not tainted ((&$red_october)[0]);
555 test 137, tainted ((&$red_october)[1]);
556 test 138, not tainted ((&$red_october)[2]);
a1f49e72 557 my @corge = &$red_october;
b3eb6a9b
GS
558 test 139, not tainted $corge[0];
559 test 140, tainted $corge[1];
560 test 141, not tainted $corge[2];
a1f49e72 561}
fb73857a
PP
562
563# Test for system/library calls returning string data of dubious origin.
564{
565 # No reliable %Config check for getpw*
566 if (eval { setpwent(); getpwent(); 1 }) {
567 setpwent();
568 my @getpwent = getpwent();
569 die "getpwent: $!\n" unless (@getpwent);
b3eb6a9b 570 test 142,( not tainted $getpwent[0]
2959b6e3 571 and tainted $getpwent[1]
fb73857a
PP
572 and not tainted $getpwent[2]
573 and not tainted $getpwent[3]
574 and not tainted $getpwent[4]
575 and not tainted $getpwent[5]
3972a534 576 and tainted $getpwent[6] # ge?cos
fb73857a 577 and not tainted $getpwent[7]
3972a534 578 and tainted $getpwent[8]); # shell
fb73857a
PP
579 endpwent();
580 } else {
b3eb6a9b 581 for (142) { print "ok $_ # Skipped: getpwent() is not available\n" }
fb73857a
PP
582 }
583
584 if ($Config{d_readdir}) { # pretty hard to imagine not
585 local(*D);
586 opendir(D, "op") or die "opendir: $!\n";
587 my $readdir = readdir(D);
b3eb6a9b 588 test 143, tainted $readdir;
fb73857a
PP
589 closedir(OP);
590 } else {
b3eb6a9b 591 for (143) { print "ok $_ # Skipped: readdir() is not available\n" }
fb73857a
PP
592 }
593
594 if ($Config{d_readlink} && $Config{d_symlink}) {
595 my $symlink = "sl$$";
596 unlink($symlink);
597 symlink("/something/naughty", $symlink) or die "symlink: $!\n";
598 my $readlink = readlink($symlink);
b3eb6a9b 599 test 144, tainted $readlink;
fb73857a
PP
600 unlink($symlink);
601 } else {
b3eb6a9b 602 for (144) { print "ok $_ # Skipped: readlink() or symlink() is not available\n"; }
fb73857a
PP
603 }
604}
605
606# test bitwise ops (regression bug)
607{
608 my $why = "y";
609 my $j = "x" | $why;
b3eb6a9b 610 test 145, not tainted $j;
fb73857a
PP
611 $why = $TAINT."y";
612 $j = "x" | $why;
b3eb6a9b 613 test 146, tainted $j;
fb73857a
PP
614}
615
48c036b1
GS
616# test target of substitution (regression bug)
617{
618 my $why = $TAINT."y";
619 $why =~ s/y/z/;
b3eb6a9b 620 test 147, tainted $why;
48c036b1
GS
621
622 my $z = "[z]";
623 $why =~ s/$z/zee/;
b3eb6a9b 624 test 148, tainted $why;
48c036b1
GS
625
626 $why =~ s/e/'-'.$$/ge;
b3eb6a9b 627 test 149, tainted $why;
48c036b1 628}
d929ce6f
JH
629
630# test shmread
631{
c9f931b8
JH
632 unless ($ipcsysv) {
633 print "ok 150 # skipped: no IPC::SysV\n";
634 last;
635 }
be3174d2 636 if ($Config{'extensions'} =~ /\bIPC\/SysV\b/ && $Config{d_shm}) {
b9d1c439 637 no strict 'subs';
d929ce6f
JH
638 my $sent = "foobar";
639 my $rcvd;
640 my $size = 2000;
c2e66d9e
GS
641 my $id = shmget(IPC_PRIVATE, $size, S_IRWXU);
642
41d6edb2
JH
643 if (defined $id) {
644 if (shmwrite($id, $sent, 0, 60)) {
645 if (shmread($id, $rcvd, 0, 60)) {
d929ce6f
JH
646 substr($rcvd, index($rcvd, "\0")) = '';
647 } else {
648 warn "# shmread failed: $!\n";
649 }
650 } else {
651 warn "# shmwrite failed: $!\n";
652 }
c2e66d9e 653 shmctl($id, IPC_RMID, 0) or warn "# shmctl failed: $!\n";
41d6edb2
JH
654 } else {
655 warn "# shmget failed: $!\n";
d929ce6f
JH
656 }
657
658 if ($rcvd eq $sent) {
659 test 150, tainted $rcvd;
660 } else {
661 print "ok 150 # Skipped: SysV shared memory operation failed\n";
662 }
663 } else {
41d6edb2 664 print "ok 150 # Skipped: SysV shared memory is not available\n";
d929ce6f
JH
665 }
666}
41d6edb2
JH
667
668# test msgrcv
669{
c9f931b8
JH
670 unless ($ipcsysv) {
671 print "ok 151 # skipped: no IPC::SysV\n";
672 last;
673 }
be3174d2 674 if ($Config{'extensions'} =~ /\bIPC\/SysV\b/ && $Config{d_msg}) {
b9d1c439 675 no strict 'subs';
41d6edb2
JH
676 my $id = msgget(IPC_PRIVATE, IPC_CREAT | S_IRWXU);
677
678 my $sent = "message";
679 my $type_sent = 1234;
680 my $rcvd;
681 my $type_rcvd;
682
683 if (defined $id) {
684 if (msgsnd($id, pack("l! a*", $type_sent, $sent), 0)) {
685 if (msgrcv($id, $rcvd, 60, 0, 0)) {
686 ($type_rcvd, $rcvd) = unpack("l! a*", $rcvd);
687 } else {
688 warn "# msgrcv failed\n";
689 }
690 } else {
691 warn "# msgsnd failed\n";
692 }
c2e66d9e 693 msgctl($id, IPC_RMID, 0) or warn "# msgctl failed: $!\n";
41d6edb2
JH
694 } else {
695 warn "# msgget failed\n";
696 }
697
698 if ($rcvd eq $sent && $type_sent == $type_rcvd) {
699 test 151, tainted $rcvd;
700 } else {
701 print "ok 151 # Skipped: SysV message queue operation failed\n";
702 }
703 } else {
704 print "ok 151 # Skipped: SysV message queues are not available\n";
705 }
706}
707
3887d568
AP
708{
709 # bug id 20001004.006
710
711 open IN, "./TEST" or warn "$0: cannot read ./TEST: $!" ;
712 local $/;
713 my $a = <IN>;
714 my $b = <IN>;
715 print "not " unless tainted($a) && tainted($b) && !defined($b);
716 print "ok 152\n";
27c9684d 717 close IN;
3887d568 718}
27c9684d
AP
719
720{
721 # bug id 20001004.007
722
723 open IN, "./TEST" or warn "$0: cannot read ./TEST: $!" ;
724 my $a = <IN>;
725
726 my $c = { a => 42,
727 b => $a };
728 print "not " unless !tainted($c->{a}) && tainted($c->{b});
729 print "ok 153\n";
730
731 my $d = { a => $a,
732 b => 42 };
733 print "not " unless tainted($d->{a}) && !tainted($d->{b});
734 print "ok 154\n";
735
736 my $e = { a => 42,
737 b => { c => $a, d => 42 } };
738 print "not " unless !tainted($e->{a}) &&
739 !tainted($e->{b}) &&
740 tainted($e->{b}->{c}) &&
741 !tainted($e->{b}->{d});
742 print "ok 155\n";
743
744 close IN;
745}
746
b94c04ac
JH
747{
748 # bug id 20010519.003
749
248c32c0
JH
750 BEGIN {
751 use vars qw($has_fcntl);
752 eval { require Fcntl; import Fcntl; };
753 unless ($@) {
754 $has_fcntl = 1;
755 }
756 }
b94c04ac 757
248c32c0
JH
758 unless ($has_fcntl) {
759 for (156..173) {
760 print "ok $_ # Skip: no Fcntl (no dynaloading?)\n";
761 }
762 } else {
763 my $evil = "foo" . $TAINT;
764
765 eval { sysopen(my $ro, $evil, &O_RDONLY) };
766 test 156, $@ !~ /^Insecure dependency/, $@;
767
768 eval { sysopen(my $wo, $evil, &O_WRONLY) };
769 test 157, $@ =~ /^Insecure dependency/, $@;
770
771 eval { sysopen(my $rw, $evil, &O_RDWR) };
772 test 158, $@ =~ /^Insecure dependency/, $@;
773
774 eval { sysopen(my $ap, $evil, &O_APPEND) };
775 test 159, $@ =~ /^Insecure dependency/, $@;
776
777 eval { sysopen(my $cr, $evil, &O_CREAT) };
778 test 160, $@ =~ /^Insecure dependency/, $@;
779
780 eval { sysopen(my $tr, $evil, &O_TRUNC) };
781 test 161, $@ =~ /^Insecure dependency/, $@;
782
783 eval { sysopen(my $ro, "foo", &O_RDONLY | $evil) };
784 test 162, $@ !~ /^Insecure dependency/, $@;
785
786 eval { sysopen(my $wo, "foo", &O_WRONLY | $evil) };
787 test 163, $@ =~ /^Insecure dependency/, $@;
788
789 eval { sysopen(my $rw, "foo", &O_RDWR | $evil) };
790 test 164, $@ =~ /^Insecure dependency/, $@;
791
792 eval { sysopen(my $ap, "foo", &O_APPEND | $evil) };
793 test 165, $@ =~ /^Insecure dependency/, $@;
794
795 eval { sysopen(my $cr, "foo", &O_CREAT | $evil) };
796 test 166, $@ =~ /^Insecure dependency/, $@;
797
798 eval { sysopen(my $tr, "foo", &O_TRUNC | $evil) };
799 test 167, $@ =~ /^Insecure dependency/, $@;
800
801 eval { sysopen(my $ro, "foo", &O_RDONLY, $evil) };
802 test 168, $@ !~ /^Insecure dependency/, $@;
803
804 eval { sysopen(my $wo, "foo", &O_WRONLY, $evil) };
805 test 169, $@ =~ /^Insecure dependency/, $@;
806
807 eval { sysopen(my $rw, "foo", &O_RDWR, $evil) };
808 test 170, $@ =~ /^Insecure dependency/, $@;
809
810 eval { sysopen(my $ap, "foo", &O_APPEND, $evil) };
811 test 171, $@ =~ /^Insecure dependency/, $@;
812
813 eval { sysopen(my $cr, "foo", &O_CREAT, $evil) };
814 test 172, $@ =~ /^Insecure dependency/, $@;
815
816 eval { sysopen(my $tr, "foo", &O_TRUNC, $evil) };
817 test 173, $@ =~ /^Insecure dependency/, $@;
818
819 unlink("foo"); # not unlink($evil), because that would fail...
820 }
b94c04ac
JH
821}
822
65811bc3
JH
823{
824 # bug 20010526.004
825
826 use warnings;
827
828 $SIG{__WARN__} = sub { print "not " };
829
830 sub fmi {
831 my $divnum = shift()/1;
832 sprintf("%1.1f\n", $divnum);
833 }
834
835 fmi(21 . $TAINT);
836 fmi(37);
837 fmi(248);
838
839 print "ok 174\n";
840}
841