1 /***************************************************************************
3 * Project ___| | | | _ \| |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
8 * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel@haxx.se>, et al.
10 * This software is licensed as described in the file COPYING, which
11 * you should have received as part of this distribution. The terms
12 * are also available at https://curl.haxx.se/docs/copyright.html.
14 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
15 * copies of the Software, and permit persons to whom the Software is
16 * furnished to do so, under the terms of the COPYING file.
18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19 * KIND, either express or implied.
21 ***************************************************************************/
23 #include "curl_setup.h"
25 #include <curl/curl.h>
27 #include "curl_fnmatch.h"
28 #include "curl_memory.h"
30 /* The last #include file should be: */
33 #define CURLFNM_CHARSET_LEN (sizeof(char) * 256)
34 #define CURLFNM_CHSET_SIZE (CURLFNM_CHARSET_LEN + 15)
36 #define CURLFNM_NEGATE CURLFNM_CHARSET_LEN
38 #define CURLFNM_ALNUM (CURLFNM_CHARSET_LEN + 1)
39 #define CURLFNM_DIGIT (CURLFNM_CHARSET_LEN + 2)
40 #define CURLFNM_XDIGIT (CURLFNM_CHARSET_LEN + 3)
41 #define CURLFNM_ALPHA (CURLFNM_CHARSET_LEN + 4)
42 #define CURLFNM_PRINT (CURLFNM_CHARSET_LEN + 5)
43 #define CURLFNM_BLANK (CURLFNM_CHARSET_LEN + 6)
44 #define CURLFNM_LOWER (CURLFNM_CHARSET_LEN + 7)
45 #define CURLFNM_GRAPH (CURLFNM_CHARSET_LEN + 8)
46 #define CURLFNM_SPACE (CURLFNM_CHARSET_LEN + 9)
47 #define CURLFNM_UPPER (CURLFNM_CHARSET_LEN + 10)
50 CURLFNM_LOOP_DEFAULT = 0,
51 CURLFNM_LOOP_BACKSLASH
55 CURLFNM_SCHS_DEFAULT = 0,
56 CURLFNM_SCHS_MAYRANGE,
57 CURLFNM_SCHS_MAYRANGE2,
59 CURLFNM_SCHS_RIGHTBRLEFTBR
67 #define SETCHARSET_OK 1
68 #define SETCHARSET_FAIL 0
70 static int parsekeyword(unsigned char **pattern, unsigned char *charset)
72 parsekey_state state = CURLFNM_PKW_INIT;
74 char keyword[KEYLEN] = { 0 };
77 unsigned char *p = *pattern;
78 for(i = 0; !found; i++) {
81 return SETCHARSET_FAIL;
83 case CURLFNM_PKW_INIT:
84 if(ISALPHA(c) && ISLOWER(c))
87 state = CURLFNM_PKW_DDOT;
91 case CURLFNM_PKW_DDOT:
95 return SETCHARSET_FAIL;
100 *pattern = p; /* move caller's pattern pointer */
101 if(strcmp(keyword, "digit") == 0)
102 charset[CURLFNM_DIGIT] = 1;
103 else if(strcmp(keyword, "alnum") == 0)
104 charset[CURLFNM_ALNUM] = 1;
105 else if(strcmp(keyword, "alpha") == 0)
106 charset[CURLFNM_ALPHA] = 1;
107 else if(strcmp(keyword, "xdigit") == 0)
108 charset[CURLFNM_XDIGIT] = 1;
109 else if(strcmp(keyword, "print") == 0)
110 charset[CURLFNM_PRINT] = 1;
111 else if(strcmp(keyword, "graph") == 0)
112 charset[CURLFNM_GRAPH] = 1;
113 else if(strcmp(keyword, "space") == 0)
114 charset[CURLFNM_SPACE] = 1;
115 else if(strcmp(keyword, "blank") == 0)
116 charset[CURLFNM_BLANK] = 1;
117 else if(strcmp(keyword, "upper") == 0)
118 charset[CURLFNM_UPPER] = 1;
119 else if(strcmp(keyword, "lower") == 0)
120 charset[CURLFNM_LOWER] = 1;
122 return SETCHARSET_FAIL;
123 return SETCHARSET_OK;
126 /* returns 1 (true) if pattern is OK, 0 if is bad ("p" is pattern pointer) */
127 static int setcharset(unsigned char **p, unsigned char *charset)
129 setcharset_state state = CURLFNM_SCHS_DEFAULT;
130 unsigned char rangestart = 0;
131 unsigned char lastchar = 0;
132 bool something_found = FALSE;
137 case CURLFNM_SCHS_DEFAULT:
138 if(ISALNUM(c)) { /* ASCII value */
142 state = CURLFNM_SCHS_MAYRANGE;
143 something_found = TRUE;
147 return SETCHARSET_OK;
149 something_found = TRUE;
150 state = CURLFNM_SCHS_RIGHTBR;
156 if(c2 == ':') { /* there has to be a keyword */
158 if(parsekeyword(p, charset)) {
159 state = CURLFNM_SCHS_DEFAULT;
162 return SETCHARSET_FAIL;
168 something_found = TRUE;
170 else if(c == '?' || c == '*') {
171 something_found = TRUE;
175 else if(c == '^' || c == '!') {
176 if(!something_found) {
177 if(charset[CURLFNM_NEGATE]) {
179 something_found = TRUE;
182 charset[CURLFNM_NEGATE] = 1; /* negate charset */
191 something_found = TRUE;
192 state = CURLFNM_SCHS_MAYRANGE;
198 return SETCHARSET_FAIL;
201 return SETCHARSET_FAIL;
206 something_found = TRUE;
209 case CURLFNM_SCHS_MAYRANGE:
214 state = CURLFNM_SCHS_MAYRANGE2;
217 state = CURLFNM_SCHS_DEFAULT;
219 else if(ISALNUM(c)) {
230 return SETCHARSET_FAIL;
233 return SETCHARSET_OK;
236 return SETCHARSET_FAIL;
238 case CURLFNM_SCHS_MAYRANGE2:
242 return SETCHARSET_FAIL;
245 return SETCHARSET_OK;
251 state = CURLFNM_SCHS_DEFAULT;
255 return SETCHARSET_FAIL;
257 if(c >= rangestart) {
258 if((ISLOWER(c) && ISLOWER(rangestart)) ||
259 (ISDIGIT(c) && ISDIGIT(rangestart)) ||
260 (ISUPPER(c) && ISUPPER(rangestart))) {
261 charset[lastchar] = 0;
263 while(rangestart++ <= c)
264 charset[rangestart-1] = 1;
266 state = CURLFNM_SCHS_DEFAULT;
269 return SETCHARSET_FAIL;
272 case CURLFNM_SCHS_RIGHTBR:
274 state = CURLFNM_SCHS_RIGHTBRLEFTBR;
279 return SETCHARSET_OK;
282 return SETCHARSET_FAIL;
284 else if(ISPRINT(c)) {
287 state = CURLFNM_SCHS_DEFAULT;
290 /* used 'goto fail' instead of 'return SETCHARSET_FAIL' to avoid a
291 * nonsense warning 'statement not reached' at end of the fnc when
292 * compiling on Solaris */
295 case CURLFNM_SCHS_RIGHTBRLEFTBR:
297 return SETCHARSET_OK;
300 state = CURLFNM_SCHS_DEFAULT;
308 return SETCHARSET_FAIL;
311 static int loop(const unsigned char *pattern, const unsigned char *string)
313 loop_state state = CURLFNM_LOOP_DEFAULT;
314 unsigned char *p = (unsigned char *)pattern;
315 unsigned char *s = (unsigned char *)string;
316 unsigned char charset[CURLFNM_CHSET_SIZE] = { 0 };
321 case CURLFNM_LOOP_DEFAULT:
323 while(*(p+1) == '*') /* eliminate multiple stars */
325 if(*s == '\0' && *(p+1) == '\0')
326 return CURL_FNMATCH_MATCH;
327 rc = loop(p + 1, s); /* *.txt matches .txt <=> .txt matches .txt */
328 if(rc == CURL_FNMATCH_MATCH)
329 return CURL_FNMATCH_MATCH;
330 if(*s) /* let the star eat up one character */
333 return CURL_FNMATCH_NOMATCH;
341 return CURL_FNMATCH_NOMATCH;
343 return CURL_FNMATCH_FAIL; /* cannot deal with other character */
345 else if(*p == '\0') {
347 return CURL_FNMATCH_MATCH;
349 return CURL_FNMATCH_NOMATCH;
351 else if(*p == '\\') {
352 state = CURLFNM_LOOP_BACKSLASH;
356 unsigned char *pp = p+1; /* cannot handle with pointer to register */
357 if(setcharset(&pp, charset)) {
359 if(charset[(unsigned int)*s])
361 else if(charset[CURLFNM_ALNUM])
363 else if(charset[CURLFNM_ALPHA])
365 else if(charset[CURLFNM_DIGIT])
367 else if(charset[CURLFNM_XDIGIT])
368 found = ISXDIGIT(*s);
369 else if(charset[CURLFNM_PRINT])
371 else if(charset[CURLFNM_SPACE])
373 else if(charset[CURLFNM_UPPER])
375 else if(charset[CURLFNM_LOWER])
377 else if(charset[CURLFNM_BLANK])
379 else if(charset[CURLFNM_GRAPH])
382 if(charset[CURLFNM_NEGATE])
388 memset(charset, 0, CURLFNM_CHSET_SIZE);
391 return CURL_FNMATCH_NOMATCH;
394 return CURL_FNMATCH_FAIL;
398 return CURL_FNMATCH_NOMATCH;
401 case CURLFNM_LOOP_BACKSLASH:
404 state = CURLFNM_LOOP_DEFAULT;
406 return CURL_FNMATCH_NOMATCH;
409 return CURL_FNMATCH_FAIL;
418 int Curl_fnmatch(void *ptr, const char *pattern, const char *string)
420 (void)ptr; /* the argument is specified by the curl_fnmatch_callback
421 prototype, but not used by Curl_fnmatch() */
422 if(!pattern || !string) {
423 return CURL_FNMATCH_FAIL;
425 return loop((unsigned char *)pattern, (unsigned char *)string);