1 /* Test of execution of file name canonicalization.
2 Copyright (C) 2007-2009 Free Software Foundation, Inc.
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 3 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>. */
17 /* Written by Bruno Haible <bruno@clisp.org>, 2007. */
21 #include "canonicalize.h"
32 # define symlink(a,b) (-1)
35 #define ASSERT(expr) \
40 fprintf (stderr, "%s:%d: assertion failed\n", __FILE__, __LINE__); \
47 #define BASE "t-can.tmp"
52 /* Setup some hierarchy to be used by this test. Start by removing
53 any leftovers from a previous partial run. */
56 ASSERT (system ("rm -rf " BASE " ise") == 0);
57 ASSERT (mkdir (BASE, 0700) == 0);
58 fd = creat (BASE "/tra", 0600);
60 ASSERT (close (fd) == 0);
63 /* Check for ., .., intermediate // handling, and for error cases. */
65 char *result1 = canonicalize_file_name (BASE "//./..//" BASE "/tra");
66 char *result2 = canonicalize_filename_mode (BASE "//./..//" BASE "/tra",
68 ASSERT (result1 != NULL);
69 ASSERT (result2 != NULL);
70 ASSERT (strcmp (result1, result2) == 0);
71 ASSERT (strstr (result1, "/" BASE "/tra")
72 == result1 + strlen (result1) - strlen ("/" BASE "/tra"));
76 result1 = canonicalize_file_name ("");
77 ASSERT (result1 == NULL);
78 ASSERT (errno == ENOENT);
80 result2 = canonicalize_filename_mode ("", CAN_EXISTING);
81 ASSERT (result2 == NULL);
82 ASSERT (errno == ENOENT);
84 result1 = canonicalize_file_name (NULL);
85 ASSERT (result1 == NULL);
86 ASSERT (errno == EINVAL);
88 result2 = canonicalize_filename_mode (NULL, CAN_EXISTING);
89 ASSERT (result2 == NULL);
90 ASSERT (errno == EINVAL);
93 /* Check that a non-directory with trailing slash yields NULL. */
98 result1 = canonicalize_file_name (BASE "/tra/");
99 ASSERT (result1 == NULL);
100 ASSERT (errno == ENOTDIR);
102 result2 = canonicalize_filename_mode (BASE "/tra/", CAN_EXISTING);
103 ASSERT (result2 == NULL);
104 ASSERT (errno == ENOTDIR);
107 /* Check that a missing directory yields NULL. */
112 result1 = canonicalize_file_name (BASE "/zzz/..");
113 ASSERT (result1 == NULL);
114 ASSERT (errno == ENOENT);
116 result2 = canonicalize_filename_mode (BASE "/zzz/..", CAN_EXISTING);
117 ASSERT (result2 == NULL);
118 ASSERT (errno == ENOENT);
121 /* From here on out, tests involve symlinks. */
122 if (symlink (BASE "/ket", "ise") != 0)
124 ASSERT (remove (BASE "/tra") == 0);
125 ASSERT (rmdir (BASE) == 0);
126 fputs ("skipping test: symlinks not supported on this filesystem\n",
130 ASSERT (symlink ("bef", BASE "/plo") == 0);
131 ASSERT (symlink ("tra", BASE "/huk") == 0);
132 ASSERT (symlink ("lum", BASE "/bef") == 0);
133 ASSERT (symlink ("wum", BASE "/ouk") == 0);
134 ASSERT (symlink ("../ise", BASE "/ket") == 0);
135 ASSERT (mkdir (BASE "/lum", 0700) == 0);
136 ASSERT (symlink ("s", BASE "/p") == 0);
137 ASSERT (symlink ("d", BASE "/s") == 0);
138 ASSERT (mkdir (BASE "/d", 0700) == 0);
139 ASSERT (close (creat (BASE "/d/2", 0600)) == 0);
140 ASSERT (symlink ("../s/2", BASE "/d/1") == 0);
142 /* Check that the symbolic link to a file can be resolved. */
144 char *result1 = canonicalize_file_name (BASE "/huk");
145 char *result2 = canonicalize_file_name (BASE "/tra");
146 char *result3 = canonicalize_filename_mode (BASE "/huk", CAN_EXISTING);
147 ASSERT (result1 != NULL);
148 ASSERT (result2 != NULL);
149 ASSERT (result3 != NULL);
150 ASSERT (strcmp (result1, result2) == 0);
151 ASSERT (strcmp (result2, result3) == 0);
152 ASSERT (strcmp (result1 + strlen (result1) - strlen ("/" BASE "/tra"),
153 "/" BASE "/tra") == 0);
159 /* Check that the symbolic link to a directory can be resolved. */
161 char *result1 = canonicalize_file_name (BASE "/plo");
162 char *result2 = canonicalize_file_name (BASE "/bef");
163 char *result3 = canonicalize_file_name (BASE "/lum");
164 char *result4 = canonicalize_filename_mode (BASE "/plo", CAN_EXISTING);
165 ASSERT (result1 != NULL);
166 ASSERT (result2 != NULL);
167 ASSERT (result3 != NULL);
168 ASSERT (result4 != NULL);
169 ASSERT (strcmp (result1, result2) == 0);
170 ASSERT (strcmp (result2, result3) == 0);
171 ASSERT (strcmp (result3, result4) == 0);
172 ASSERT (strcmp (result1 + strlen (result1) - strlen ("/" BASE "/lum"),
173 "/" BASE "/lum") == 0);
180 /* Check that a symbolic link to a nonexistent file yields NULL. */
185 result1 = canonicalize_file_name (BASE "/ouk");
186 ASSERT (result1 == NULL);
187 ASSERT (errno == ENOENT);
189 result2 = canonicalize_filename_mode (BASE "/ouk", CAN_EXISTING);
190 ASSERT (result2 == NULL);
191 ASSERT (errno == ENOENT);
194 /* Check that a non-directory symlink with trailing slash yields NULL. */
199 result1 = canonicalize_file_name (BASE "/huk/");
200 ASSERT (result1 == NULL);
201 ASSERT (errno == ENOTDIR);
203 result2 = canonicalize_filename_mode (BASE "/huk/", CAN_EXISTING);
204 ASSERT (result2 == NULL);
205 ASSERT (errno == ENOTDIR);
208 /* Check that a missing directory via symlink yields NULL. */
213 result1 = canonicalize_file_name (BASE "/ouk/..");
214 ASSERT (result1 == NULL);
215 ASSERT (errno == ENOENT);
217 result2 = canonicalize_filename_mode (BASE "/ouk/..", CAN_EXISTING);
218 ASSERT (result2 == NULL);
219 ASSERT (errno == ENOENT);
222 /* Check that a loop of symbolic links is detected. */
227 result1 = canonicalize_file_name ("ise");
228 ASSERT (result1 == NULL);
229 ASSERT (errno == ELOOP);
231 result2 = canonicalize_filename_mode ("ise", CAN_EXISTING);
232 ASSERT (result2 == NULL);
233 ASSERT (errno == ELOOP);
236 /* Check that alternate modes can resolve missing basenames. */
238 char *result1 = canonicalize_filename_mode (BASE "/zzz", CAN_ALL_BUT_LAST);
239 char *result2 = canonicalize_filename_mode (BASE "/zzz", CAN_MISSING);
240 ASSERT (result1 != NULL);
241 ASSERT (result2 != NULL);
242 ASSERT (strcmp (result1, result2) == 0);
243 ASSERT (strcmp (result1 + strlen (result1) - strlen ("/" BASE "/zzz"),
244 "/" BASE "/zzz") == 0);
249 /* Check that alternate modes can resolve broken symlink basenames. */
251 char *result1 = canonicalize_filename_mode (BASE "/ouk", CAN_ALL_BUT_LAST);
252 char *result2 = canonicalize_filename_mode (BASE "/ouk", CAN_MISSING);
253 ASSERT (result1 != NULL);
254 ASSERT (result2 != NULL);
255 ASSERT (strcmp (result1, result2) == 0);
256 ASSERT (strcmp (result1 + strlen (result1) - strlen ("/" BASE "/wum"),
257 "/" BASE "/wum") == 0);
262 /* Check that alternate modes can handle missing dirnames. */
264 char *result1 = canonicalize_filename_mode ("t-can.zzz/zzz", CAN_ALL_BUT_LAST);
265 char *result2 = canonicalize_filename_mode ("t-can.zzz/zzz", CAN_MISSING);
266 ASSERT (result1 == NULL);
267 ASSERT (result2 != NULL);
268 ASSERT (strcmp (result2 + strlen (result2) - 14, "/t-can.zzz/zzz") == 0);
272 /* Ensure that the following is resolved properly.
273 Before 2007-09-27, it would mistakenly report a loop. */
275 char *result1 = canonicalize_filename_mode (BASE, CAN_EXISTING);
276 char *result2 = canonicalize_filename_mode (BASE "/p/1", CAN_EXISTING);
277 ASSERT (result1 != NULL);
278 ASSERT (result2 != NULL);
279 ASSERT (strcmp (result2 + strlen (result1), "/d/2") == 0);
285 ASSERT (remove (BASE "/d/1") == 0);
286 ASSERT (remove (BASE "/d/2") == 0);
287 ASSERT (remove (BASE "/d") == 0);
288 ASSERT (remove (BASE "/s") == 0);
289 ASSERT (remove (BASE "/p") == 0);
290 ASSERT (remove (BASE "/plo") == 0);
291 ASSERT (remove (BASE "/huk") == 0);
292 ASSERT (remove (BASE "/bef") == 0);
293 ASSERT (remove (BASE "/ouk") == 0);
294 ASSERT (remove (BASE "/ket") == 0);
295 ASSERT (remove (BASE "/lum") == 0);
296 ASSERT (remove (BASE "/tra") == 0);
297 ASSERT (remove (BASE) == 0);
298 ASSERT (remove ("ise") == 0);