1 /*-
2  * Copyright (c) 2003-2007 Tim Kientzle
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
15  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17  * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
18  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24  */
25 #include "test.h"
26 __FBSDID("$FreeBSD: head/lib/libarchive/test/test_write_disk_symlink.c 201247 2009-12-30 05:59:21Z kientzle $");
27 
28 /*
29  * Exercise symlink recreation.
30  */
DEFINE_TEST(test_write_disk_symlink)31 DEFINE_TEST(test_write_disk_symlink)
32 {
33 	static const char data[]="abcdefghijklmnopqrstuvwxyz";
34 	struct archive *ad;
35 	struct archive_entry *ae;
36 	int r;
37 
38 	if (!canSymlink()) {
39 		skipping("Symlinks not supported");
40 		return;
41 	}
42 
43 	/* Write entries to disk. */
44 	assert((ad = archive_write_disk_new()) != NULL);
45 
46 	/*
47 	 * First, create a regular file then a symlink to that file.
48 	 */
49 
50 	/* Regular file: link1a */
51 	assert((ae = archive_entry_new()) != NULL);
52 	archive_entry_copy_pathname(ae, "link1a");
53 	archive_entry_set_mode(ae, AE_IFREG | 0755);
54 	archive_entry_set_size(ae, sizeof(data));
55 	assertEqualIntA(ad, 0, archive_write_header(ad, ae));
56 	assertEqualInt(sizeof(data),
57 	    archive_write_data(ad, data, sizeof(data)));
58 	assertEqualIntA(ad, 0, archive_write_finish_entry(ad));
59 	archive_entry_free(ae);
60 
61 	/* Symbolic Link: link1b -> link1a */
62 	assert((ae = archive_entry_new()) != NULL);
63 	archive_entry_copy_pathname(ae, "link1b");
64 	archive_entry_set_mode(ae, AE_IFLNK | 0642);
65 	archive_entry_set_size(ae, 0);
66 	archive_entry_copy_symlink(ae, "link1a");
67 	assertEqualIntA(ad, 0, r = archive_write_header(ad, ae));
68 	if (r >= ARCHIVE_WARN)
69 		assertEqualIntA(ad, 0, archive_write_finish_entry(ad));
70 	archive_entry_free(ae);
71 
72 	/*
73 	 * We should be able to do this in the other order as well,
74 	 * of course.
75 	 */
76 
77 	/* Symbolic link: link2b -> link2a */
78 	assert((ae = archive_entry_new()) != NULL);
79 	archive_entry_copy_pathname(ae, "link2b");
80 	archive_entry_set_mode(ae, AE_IFLNK | 0642);
81 	archive_entry_unset_size(ae);
82 	archive_entry_copy_symlink(ae, "link2a");
83 	assertEqualIntA(ad, 0, r = archive_write_header(ad, ae));
84 	if (r >= ARCHIVE_WARN) {
85 		assertEqualInt(ARCHIVE_WARN,
86 		    archive_write_data(ad, data, sizeof(data)));
87 		assertEqualIntA(ad, 0, archive_write_finish_entry(ad));
88 	}
89 	archive_entry_free(ae);
90 
91 	/* File: link2a */
92 	assert((ae = archive_entry_new()) != NULL);
93 	archive_entry_copy_pathname(ae, "link2a");
94 	archive_entry_set_mode(ae, AE_IFREG | 0755);
95 	archive_entry_set_size(ae, sizeof(data));
96 	assertEqualIntA(ad, 0, archive_write_header(ad, ae));
97 	assertEqualInt(sizeof(data),
98 	    archive_write_data(ad, data, sizeof(data)));
99 	assertEqualIntA(ad, 0, archive_write_finish_entry(ad));
100 	archive_entry_free(ae);
101 
102 	/* Symbolic link: dot -> . */
103 	assert((ae = archive_entry_new()) != NULL);
104 	archive_entry_copy_pathname(ae, "dot");
105 	archive_entry_set_mode(ae, AE_IFLNK | 0642);
106 	archive_entry_unset_size(ae);
107 	archive_entry_copy_symlink(ae, ".");
108 	assertEqualIntA(ad, 0, r = archive_write_header(ad, ae));
109 	if (r >= ARCHIVE_WARN)
110 		assertEqualIntA(ad, 0, archive_write_finish_entry(ad));
111 	archive_entry_free(ae);
112 
113 	/* Symbolic link: dotdot -> .. */
114 	assert((ae = archive_entry_new()) != NULL);
115 	archive_entry_copy_pathname(ae, "dotdot");
116 	archive_entry_set_mode(ae, AE_IFLNK | 0642);
117 	archive_entry_unset_size(ae);
118 	archive_entry_copy_symlink(ae, "..");
119 	assertEqualIntA(ad, 0, r = archive_write_header(ad, ae));
120 	if (r >= ARCHIVE_WARN)
121 		assertEqualIntA(ad, 0, archive_write_finish_entry(ad));
122 	archive_entry_free(ae);
123 
124 	/* Symbolic link: slash -> / */
125 	assert((ae = archive_entry_new()) != NULL);
126 	archive_entry_copy_pathname(ae, "slash");
127 	archive_entry_set_mode(ae, AE_IFLNK | 0642);
128 	archive_entry_unset_size(ae);
129 	archive_entry_copy_symlink(ae, "/");
130 	assertEqualIntA(ad, 0, r = archive_write_header(ad, ae));
131 	if (r >= ARCHIVE_WARN)
132 		assertEqualIntA(ad, 0, archive_write_finish_entry(ad));
133 	archive_entry_free(ae);
134 
135 	/* Symbolic link: sldot -> /. */
136 	assert((ae = archive_entry_new()) != NULL);
137 	archive_entry_copy_pathname(ae, "sldot");
138 	archive_entry_set_mode(ae, AE_IFLNK | 0642);
139 	archive_entry_unset_size(ae);
140 	archive_entry_copy_symlink(ae, "/.");
141 	assertEqualIntA(ad, 0, r = archive_write_header(ad, ae));
142 	if (r >= ARCHIVE_WARN)
143 		assertEqualIntA(ad, 0, archive_write_finish_entry(ad));
144 	archive_entry_free(ae);
145 
146 	/* Symbolic link: sldotdot -> /.. */
147 	assert((ae = archive_entry_new()) != NULL);
148 	archive_entry_copy_pathname(ae, "sldotdot");
149 	archive_entry_set_mode(ae, AE_IFLNK | 0642);
150 	archive_entry_unset_size(ae);
151 	archive_entry_copy_symlink(ae, "/..");
152 	assertEqualIntA(ad, 0, r = archive_write_header(ad, ae));
153 	if (r >= ARCHIVE_WARN)
154 		assertEqualIntA(ad, 0, archive_write_finish_entry(ad));
155 	archive_entry_free(ae);
156 
157 	/* Dir: d1 */
158 	assert((ae = archive_entry_new()) != NULL);
159 	archive_entry_copy_pathname(ae, "d1");
160 	archive_entry_set_mode(ae, AE_IFDIR | 0777);
161 	archive_entry_unset_size(ae);
162 	assertEqualIntA(ad, 0, r = archive_write_header(ad, ae));
163 	if (r >= ARCHIVE_WARN)
164 		assertEqualIntA(ad, 0, archive_write_finish_entry(ad));
165 	archive_entry_free(ae);
166 
167 	/* Symbolic link: d1nosl -> d1 */
168 	assert((ae = archive_entry_new()) != NULL);
169 	archive_entry_copy_pathname(ae, "d1nosl");
170 	archive_entry_set_mode(ae, AE_IFLNK | 0642);
171 	archive_entry_unset_size(ae);
172 	archive_entry_copy_symlink(ae, "d1");
173 	assertEqualIntA(ad, 0, r = archive_write_header(ad, ae));
174 	if (r >= ARCHIVE_WARN)
175 		assertEqualIntA(ad, 0, archive_write_finish_entry(ad));
176 	archive_entry_free(ae);
177 
178 	/* Symbolic link: d1slash -> d1/ */
179 	assert((ae = archive_entry_new()) != NULL);
180 	archive_entry_copy_pathname(ae, "d1slash");
181 	archive_entry_set_mode(ae, AE_IFLNK | 0642);
182 	archive_entry_unset_size(ae);
183 	archive_entry_copy_symlink(ae, "d1/");
184 	assertEqualIntA(ad, 0, r = archive_write_header(ad, ae));
185 	if (r >= ARCHIVE_WARN)
186 		assertEqualIntA(ad, 0, archive_write_finish_entry(ad));
187 	archive_entry_free(ae);
188 
189 	/* Symbolic link: d1sldot -> d1/. */
190 	assert((ae = archive_entry_new()) != NULL);
191 	archive_entry_copy_pathname(ae, "d1sldot");
192 	archive_entry_set_mode(ae, AE_IFLNK | 0642);
193 	archive_entry_unset_size(ae);
194 	archive_entry_copy_symlink(ae, "d1/.");
195 	assertEqualIntA(ad, 0, r = archive_write_header(ad, ae));
196 	if (r >= ARCHIVE_WARN)
197 		assertEqualIntA(ad, 0, archive_write_finish_entry(ad));
198 	archive_entry_free(ae);
199 
200 	/* Symbolic link: d1slddot -> d1/.. */
201 	assert((ae = archive_entry_new()) != NULL);
202 	archive_entry_copy_pathname(ae, "d1slddot");
203 	archive_entry_set_mode(ae, AE_IFLNK | 0642);
204 	archive_entry_unset_size(ae);
205 	archive_entry_copy_symlink(ae, "d1/..");
206 	assertEqualIntA(ad, 0, r = archive_write_header(ad, ae));
207 	if (r >= ARCHIVE_WARN)
208 		assertEqualIntA(ad, 0, archive_write_finish_entry(ad));
209 	archive_entry_free(ae);
210 
211 	/* Symbolic link: d1dir -> d1 */
212 	assert((ae = archive_entry_new()) != NULL);
213 	archive_entry_copy_pathname(ae, "d1dir");
214 	archive_entry_set_mode(ae, AE_IFLNK | 0642);
215 	archive_entry_set_symlink_type(ae, AE_SYMLINK_TYPE_DIRECTORY);
216 	archive_entry_unset_size(ae);
217 	archive_entry_copy_symlink(ae, "d1");
218 	assertEqualIntA(ad, 0, r = archive_write_header(ad, ae));
219 	if (r >= ARCHIVE_WARN)
220 		assertEqualIntA(ad, 0, archive_write_finish_entry(ad));
221 	archive_entry_free(ae);
222 
223 	/* Symbolic link: d1file -> d1 */
224 	assert((ae = archive_entry_new()) != NULL);
225 	archive_entry_copy_pathname(ae, "d1file");
226 	archive_entry_set_mode(ae, AE_IFLNK | 0642);
227 	archive_entry_set_symlink_type(ae, AE_SYMLINK_TYPE_FILE);
228 	archive_entry_unset_size(ae);
229 	archive_entry_copy_symlink(ae, "d1");
230 	assertEqualIntA(ad, 0, r = archive_write_header(ad, ae));
231 	if (r >= ARCHIVE_WARN)
232 		assertEqualIntA(ad, 0, archive_write_finish_entry(ad));
233 	archive_entry_free(ae);
234 
235 	assertEqualInt(ARCHIVE_OK, archive_write_free(ad));
236 
237 	/* Test the entries on disk. */
238 
239 	/* Test #1 */
240 	assertIsReg("link1a", -1);
241 	assertFileSize("link1a", sizeof(data));
242 	assertFileNLinks("link1a", 1);
243 	assertIsSymlink("link1b", "link1a", 0);
244 
245 	/* Test #2: Should produce identical results to test #1 */
246 	assertIsReg("link2a", -1);
247 	assertFileSize("link2a", sizeof(data));
248 	assertFileNLinks("link2a", 1);
249 	assertIsSymlink("link2b", "link2a", 0);
250 
251 	/* Test #3: Special symlinks */
252 	assertIsSymlink("dot", ".", 1);
253 	assertIsSymlink("dotdot", "..", 1);
254 	assertIsSymlink("slash", "/", 1);
255 	assertIsSymlink("sldot", "/.", 1);
256 	assertIsSymlink("sldotdot", "/..", 1);
257 
258 	/* Test #4: Directory symlink mixed with . and .. */
259 	assertIsDir("d1", -1);
260 	/* On Windows, d1nosl should be a file symlink */
261 	assertIsSymlink("d1nosl", "d1", 0);
262 	assertIsSymlink("d1slash", "d1/", 1);
263 	assertIsSymlink("d1sldot", "d1/.", 1);
264 	assertIsSymlink("d1slddot", "d1/..", 1);
265 
266 	/* Test #5: symlink_type is set */
267 	assertIsSymlink("d1dir", "d1", 1);
268 	assertIsSymlink("d1file", "d1", 0);
269 }
270