1 /*
2  * Copyright (c) 2010 Jilles Tjoelker
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 AND CONTRIBUTORS ``AS IS'' AND
15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  */
26 
27 #include <sys/param.h>
28 #include <errno.h>
29 #include <fnmatch.h>
30 #include <stdio.h>
31 #include <stdlib.h>
32 #include <string.h>
33 #include <unistd.h>
34 
35 struct testcase {
36 	const char *pattern;
37 	const char *string;
38 	int flags;
39 	int result;
40 } testcases[] = {
41 	{ "", "", 0, 0 },
42 	{ "a", "a", 0, 0 },
43 	{ "a", "b", 0, FNM_NOMATCH },
44 	{ "a", "A", 0, FNM_NOMATCH },
45 	{ "*", "a", 0, 0 },
46 	{ "*", "aa", 0, 0 },
47 	{ "*a", "a", 0, 0 },
48 	{ "*a", "b", 0, FNM_NOMATCH },
49 	{ "*a*", "b", 0, FNM_NOMATCH },
50 	{ "*a*b*", "ab", 0, 0 },
51 	{ "*a*b*", "qaqbq", 0, 0 },
52 	{ "*a*bb*", "qaqbqbbq", 0, 0 },
53 	{ "*a*bc*", "qaqbqbcq", 0, 0 },
54 	{ "*a*bb*", "qaqbqbb", 0, 0 },
55 	{ "*a*bc*", "qaqbqbc", 0, 0 },
56 	{ "*a*bb", "qaqbqbb", 0, 0 },
57 	{ "*a*bc", "qaqbqbc", 0, 0 },
58 	{ "*a*bb", "qaqbqbbq", 0, FNM_NOMATCH },
59 	{ "*a*bc", "qaqbqbcq", 0, FNM_NOMATCH },
60 	{ "*a*a*a*a*a*a*a*a*a*a*", "aaaaaaaaa", 0, FNM_NOMATCH },
61 	{ "*a*a*a*a*a*a*a*a*a*a*", "aaaaaaaaaa", 0, 0 },
62 	{ "*a*a*a*a*a*a*a*a*a*a*", "aaaaaaaaaaa", 0, 0 },
63 	{ ".*.*.*.*.*.*.*.*.*.*", ".........", 0, FNM_NOMATCH },
64 	{ ".*.*.*.*.*.*.*.*.*.*", "..........", 0, 0 },
65 	{ ".*.*.*.*.*.*.*.*.*.*", "...........", 0, 0 },
66 	{ "*?*?*?*?*?*?*?*?*?*?*", "123456789", 0, FNM_NOMATCH },
67 	{ "??????????*", "123456789", 0, FNM_NOMATCH },
68 	{ "*??????????", "123456789", 0, FNM_NOMATCH },
69 	{ "*?*?*?*?*?*?*?*?*?*?*", "1234567890", 0, 0 },
70 	{ "??????????*", "1234567890", 0, 0 },
71 	{ "*??????????", "1234567890", 0, 0 },
72 	{ "*?*?*?*?*?*?*?*?*?*?*", "12345678901", 0, 0 },
73 	{ "??????????*", "12345678901", 0, 0 },
74 	{ "*??????????", "12345678901", 0, 0 },
75 	{ "[x]", "x", 0, 0 },
76 	{ "[*]", "*", 0, 0 },
77 	{ "[?]", "?", 0, 0 },
78 	{ "[", "[", 0, 0 },
79 	{ "[[]", "[", 0, 0 },
80 	{ "[[]", "x", 0, FNM_NOMATCH },
81 	{ "[*]", "", 0, FNM_NOMATCH },
82 	{ "[*]", "x", 0, FNM_NOMATCH },
83 	{ "[?]", "x", 0, FNM_NOMATCH },
84 	{ "*[*]*", "foo*foo", 0, 0 },
85 	{ "*[*]*", "foo", 0, FNM_NOMATCH },
86 	{ "[0-9]", "0", 0, 0 },
87 	{ "[0-9]", "5", 0, 0 },
88 	{ "[0-9]", "9", 0, 0 },
89 	{ "[0-9]", "/", 0, FNM_NOMATCH },
90 	{ "[0-9]", ":", 0, FNM_NOMATCH },
91 	{ "[0-9]", "*", 0, FNM_NOMATCH },
92 	{ "[!0-9]", "0", 0, FNM_NOMATCH },
93 	{ "[!0-9]", "5", 0, FNM_NOMATCH },
94 	{ "[!0-9]", "9", 0, FNM_NOMATCH },
95 	{ "[!0-9]", "/", 0, 0 },
96 	{ "[!0-9]", ":", 0, 0 },
97 	{ "[!0-9]", "*", 0, 0 },
98 	{ "*[0-9]", "a0", 0, 0 },
99 	{ "*[0-9]", "a5", 0, 0 },
100 	{ "*[0-9]", "a9", 0, 0 },
101 	{ "*[0-9]", "a/", 0, FNM_NOMATCH },
102 	{ "*[0-9]", "a:", 0, FNM_NOMATCH },
103 	{ "*[0-9]", "a*", 0, FNM_NOMATCH },
104 	{ "*[!0-9]", "a0", 0, FNM_NOMATCH },
105 	{ "*[!0-9]", "a5", 0, FNM_NOMATCH },
106 	{ "*[!0-9]", "a9", 0, FNM_NOMATCH },
107 	{ "*[!0-9]", "a/", 0, 0 },
108 	{ "*[!0-9]", "a:", 0, 0 },
109 	{ "*[!0-9]", "a*", 0, 0 },
110 	{ "*[0-9]", "a00", 0, 0 },
111 	{ "*[0-9]", "a55", 0, 0 },
112 	{ "*[0-9]", "a99", 0, 0 },
113 	{ "*[0-9]", "a0a0", 0, 0 },
114 	{ "*[0-9]", "a5a5", 0, 0 },
115 	{ "*[0-9]", "a9a9", 0, 0 },
116 	{ "\\*", "*", 0, 0 },
117 	{ "\\?", "?", 0, 0 },
118 	{ "\\[x]", "[x]", 0, 0 },
119 	{ "\\[", "[", 0, 0 },
120 	{ "\\\\", "\\", 0, 0 },
121 	{ "*\\**", "foo*foo", 0, 0 },
122 	{ "*\\**", "foo", 0, FNM_NOMATCH },
123 	{ "*\\\\*", "foo\\foo", 0, 0 },
124 	{ "*\\\\*", "foo", 0, FNM_NOMATCH },
125 	{ "\\(", "(", 0, 0 },
126 	{ "\\a", "a", 0, 0 },
127 	{ "\\*", "a", 0, FNM_NOMATCH },
128 	{ "\\?", "a", 0, FNM_NOMATCH },
129 	{ "\\*", "\\*", 0, FNM_NOMATCH },
130 	{ "\\?", "\\?", 0, FNM_NOMATCH },
131 	{ "\\[x]", "\\[x]", 0, FNM_NOMATCH },
132 	{ "\\[x]", "\\x", 0, FNM_NOMATCH },
133 	{ "\\[", "\\[", 0, FNM_NOMATCH },
134 	{ "\\(", "\\(", 0, FNM_NOMATCH },
135 	{ "\\a", "\\a", 0, FNM_NOMATCH },
136 	{ "\\", "\\", 0, FNM_NOMATCH },
137 	{ "\\", "", 0, FNM_NOMATCH },
138 	{ "\\*", "\\*", FNM_NOESCAPE, 0 },
139 	{ "\\?", "\\?", FNM_NOESCAPE, 0 },
140 	{ "\\", "\\", FNM_NOESCAPE, 0 },
141 	{ "\\\\", "\\", FNM_NOESCAPE, FNM_NOMATCH },
142 	{ "\\\\", "\\\\", FNM_NOESCAPE, 0 },
143 	{ "*\\*", "foo\\foo", FNM_NOESCAPE, 0 },
144 	{ "*\\*", "foo", FNM_NOESCAPE, FNM_NOMATCH },
145 	{ "*", ".", FNM_PERIOD, FNM_NOMATCH },
146 	{ "?", ".", FNM_PERIOD, FNM_NOMATCH },
147 	{ ".*", ".", 0, 0 },
148 	{ ".*", "..", 0, 0 },
149 	{ ".*", ".a", 0, 0 },
150 	{ "[0-9]", ".", FNM_PERIOD, FNM_NOMATCH },
151 	{ "a*", "a.", 0, 0 },
152 	{ "a/a", "a/a", FNM_PATHNAME, 0 },
153 	{ "a/*", "a/a", FNM_PATHNAME, 0 },
154 	{ "*/a", "a/a", FNM_PATHNAME, 0 },
155 	{ "*/*", "a/a", FNM_PATHNAME, 0 },
156 	{ "a*b/*", "abbb/x", FNM_PATHNAME, 0 },
157 	{ "a*b/*", "abbb/.x", FNM_PATHNAME, 0 },
158 	{ "*", "a/a", FNM_PATHNAME, FNM_NOMATCH },
159 	{ "*/*", "a/a/a", FNM_PATHNAME, FNM_NOMATCH },
160 	{ "b/*", "b/.x", FNM_PATHNAME | FNM_PERIOD, FNM_NOMATCH },
161 	{ "b*/*", "a/.x", FNM_PATHNAME | FNM_PERIOD, FNM_NOMATCH },
162 	{ "b/.*", "b/.x", FNM_PATHNAME | FNM_PERIOD, 0 },
163 	{ "b*/.*", "b/.x", FNM_PATHNAME | FNM_PERIOD, 0 },
164 	{ "a", "A", FNM_CASEFOLD, 0 },
165 	{ "A", "a", FNM_CASEFOLD, 0 },
166 	{ "[a]", "A", FNM_CASEFOLD, 0 },
167 	{ "[A]", "a", FNM_CASEFOLD, 0 },
168 	{ "a", "b", FNM_CASEFOLD, FNM_NOMATCH },
169 	{ "a", "a/b", FNM_PATHNAME, FNM_NOMATCH },
170 	{ "*", "a/b", FNM_PATHNAME, FNM_NOMATCH },
171 	{ "*b", "a/b", FNM_PATHNAME, FNM_NOMATCH },
172 	{ "a", "a/b", FNM_PATHNAME | FNM_LEADING_DIR, 0 },
173 	{ "*", "a/b", FNM_PATHNAME | FNM_LEADING_DIR, 0 },
174 	{ "*", ".a/b", FNM_PATHNAME | FNM_LEADING_DIR, 0 },
175 	{ "*a", ".a/b", FNM_PATHNAME | FNM_LEADING_DIR, 0 },
176 	{ "*", ".a/b", FNM_PATHNAME | FNM_PERIOD | FNM_LEADING_DIR,
177 	    FNM_NOMATCH },
178 	{ "*a", ".a/b", FNM_PATHNAME | FNM_PERIOD | FNM_LEADING_DIR,
179 	    FNM_NOMATCH },
180 	{ "a*b/*", "abbb/.x", FNM_PATHNAME | FNM_PERIOD, FNM_NOMATCH },
181 };
182 
183 static const char *
flags_to_string(int flags)184 flags_to_string(int flags)
185 {
186 	static const int flagvalues[] = { FNM_NOESCAPE, FNM_PATHNAME,
187 		FNM_PERIOD, FNM_LEADING_DIR, FNM_CASEFOLD, 0 };
188 	static const char flagnames[] = "FNM_NOESCAPE\0FNM_PATHNAME\0"
189 	    "FNM_PERIOD\0FNM_LEADING_DIR\0FNM_CASEFOLD\0";
190 	static char result[sizeof (flagnames) + 3 * sizeof (int) + 2];
191 	char *p;
192 	size_t i, len;
193 	const char *fp;
194 
195 	p = result;
196 	fp = flagnames;
197 	for (i = 0; flagvalues[i] != 0; i++) {
198 		len = strlen(fp);
199 		if (flags & flagvalues[i]) {
200 			if (p != result)
201 				*p++ = '|';
202 			memcpy(p, fp, len);
203 			p += len;
204 			flags &= ~flagvalues[i];
205 		}
206 		fp += len + 1;
207 	}
208 	if (p == result)
209 		memcpy(p, "0", 2);
210 	else if (flags != 0)
211 		(void) sprintf(p, "%d", flags);
212 	else
213 		*p = '\0';
214 	return (result);
215 }
216 
217 int
main(void)218 main(void)
219 {
220 	size_t i;
221 	int flags, result;
222 	int ret = 0;
223 	struct testcase *t;
224 
225 	for (i = 0; i < sizeof (testcases) / sizeof (struct testcase); i++) {
226 		t = &testcases[i];
227 		flags = t->flags;
228 		do {
229 			result = fnmatch(t->pattern, t->string, flags);
230 			if (result != t->result)
231 				break;
232 			if (strchr(t->pattern, '\\') == NULL &&
233 			    !(flags & FNM_NOESCAPE)) {
234 				flags |= FNM_NOESCAPE;
235 				result = fnmatch(t->pattern, t->string, flags);
236 				if (result != t->result)
237 					break;
238 				flags = t->flags;
239 			}
240 			if (strchr(t->pattern, '\\') != NULL &&
241 			    strchr(t->string, '\\') == NULL &&
242 			    t->result == FNM_NOMATCH &&
243 			    !(flags & (FNM_NOESCAPE | FNM_LEADING_DIR))) {
244 				flags |= FNM_NOESCAPE;
245 				result = fnmatch(t->pattern, t->string, flags);
246 				if (result != t->result)
247 					break;
248 				flags = t->flags;
249 			}
250 			if ((t->string[0] != '.' || t->pattern[0] == '.' ||
251 			    t->result == FNM_NOMATCH) &&
252 			    !(flags & (FNM_PATHNAME | FNM_PERIOD))) {
253 				flags |= FNM_PERIOD;
254 				result = fnmatch(t->pattern, t->string, flags);
255 				if (result != t->result)
256 					break;
257 				flags = t->flags;
258 			}
259 			if ((strchr(t->string, '/') == NULL ||
260 			    t->result == FNM_NOMATCH) &&
261 			    !(flags & FNM_PATHNAME)) {
262 				flags |= FNM_PATHNAME;
263 				result = fnmatch(t->pattern, t->string, flags);
264 				if (result != t->result)
265 					break;
266 				flags = t->flags;
267 			}
268 			if ((((t->string[0] != '.' || t->pattern[0] == '.') &&
269 			    strstr(t->string, "/.") == NULL) ||
270 			    t->result == FNM_NOMATCH) &&
271 			    flags & FNM_PATHNAME && !(flags & FNM_PERIOD)) {
272 				flags |= FNM_PERIOD;
273 				result = fnmatch(t->pattern, t->string, flags);
274 				if (result != t->result)
275 					break;
276 				flags = t->flags;
277 			}
278 			if ((((t->string[0] != '.' || t->pattern[0] == '.') &&
279 			    strchr(t->string, '/') == NULL) ||
280 			    t->result == FNM_NOMATCH) &&
281 			    !(flags & (FNM_PATHNAME | FNM_PERIOD))) {
282 				flags |= FNM_PATHNAME | FNM_PERIOD;
283 				result = fnmatch(t->pattern, t->string, flags);
284 				if (result != t->result)
285 					break;
286 				flags = t->flags;
287 			}
288 			if ((strchr(t->string, '/') == NULL ||
289 			    t->result == 0) &&
290 			    !(flags & FNM_LEADING_DIR)) {
291 				flags |= FNM_LEADING_DIR;
292 				result = fnmatch(t->pattern, t->string, flags);
293 				if (result != t->result)
294 					break;
295 				flags = t->flags;
296 			}
297 			if (t->result == 0 && !(flags & FNM_CASEFOLD)) {
298 				flags |= FNM_CASEFOLD;
299 				result = fnmatch(t->pattern, t->string, flags);
300 				if (result != t->result)
301 					break;
302 				flags = t->flags;
303 			}
304 			if (strchr(t->pattern, '\\') == NULL &&
305 			    t->result == 0 &&
306 			    !(flags & (FNM_NOESCAPE | FNM_CASEFOLD))) {
307 				flags |= FNM_NOESCAPE | FNM_CASEFOLD;
308 				result = fnmatch(t->pattern, t->string, flags);
309 				if (result != t->result)
310 					break;
311 				flags = t->flags;
312 			}
313 		} while (0);
314 
315 		if (result != t->result) {
316 			printf("fnmatch(\"%s\", \"%s\", %s) != %d (was %d)\n",
317 			    t->pattern, t->string, flags_to_string(flags),
318 			    t->result, result);
319 			ret = 1;
320 		}
321 	}
322 
323 	return (ret);
324 }
325