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1 | /* irc_string.c */ | |
2 | ||
3 | #include "irc_string.h" | |
4 | #include "chattr.tab.c" | |
5 | #include <stdlib.h> | |
6 | #include <stdio.h> | |
7 | #include <errno.h> | |
8 | ||
9 | /*- | |
10 | * For some sections, the BSD license applies, specifically: | |
11 | * ircd_strcmp ircd_strncmp: | |
12 | * | |
13 | * Copyright (c) 1987 | |
14 | * The Regents of the University of California. All rights reserved. | |
15 | * | |
16 | * match/collapse | |
17 | * | |
18 | * Copyright (c) 1998 | |
19 | * Andrea Cocito (Nemesi). | |
20 | * Copyright (c) | |
21 | * Run (carlo@runaway.xs4all.nl) 1996 | |
22 | * | |
23 | * mmatch/match/collapse | |
24 | * | |
25 | * Copyright (c) | |
26 | * Run (carlo@runaway.xs4all.nl) 1996 | |
27 | * | |
28 | * License follows: | |
29 | * | |
30 | * Redistribution and use in source and binary forms, with or without | |
31 | * modification, are permitted provided that the following conditions | |
32 | * are met: | |
33 | * 1. Redistributions of source code must retain the above copyright | |
34 | * notice, this list of conditions and the following disclaimer. | |
35 | * 2. Redistributions in binary form must reproduce the above copyright | |
36 | * notice, this list of conditions and the following disclaimer in the | |
37 | * documentation and/or other materials provided with the distribution. | |
38 | * 4. Neither the name of the University/owner? nor the names of its contributors | |
39 | * may be used to endorse or promote products derived from this software | |
40 | * without specific prior written permission. | |
41 | * | |
42 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
43 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
44 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
45 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
46 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
47 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
48 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
49 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
50 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
51 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
52 | * SUCH DAMAGE. | |
53 | */ | |
54 | ||
55 | ||
56 | static unsigned long crc32_tab[] = { | |
57 | 0x00000000L, 0x77073096L, 0xee0e612cL, 0x990951baL, 0x076dc419L, | |
58 | 0x706af48fL, 0xe963a535L, 0x9e6495a3L, 0x0edb8832L, 0x79dcb8a4L, | |
59 | 0xe0d5e91eL, 0x97d2d988L, 0x09b64c2bL, 0x7eb17cbdL, 0xe7b82d07L, | |
60 | 0x90bf1d91L, 0x1db71064L, 0x6ab020f2L, 0xf3b97148L, 0x84be41deL, | |
61 | 0x1adad47dL, 0x6ddde4ebL, 0xf4d4b551L, 0x83d385c7L, 0x136c9856L, | |
62 | 0x646ba8c0L, 0xfd62f97aL, 0x8a65c9ecL, 0x14015c4fL, 0x63066cd9L, | |
63 | 0xfa0f3d63L, 0x8d080df5L, 0x3b6e20c8L, 0x4c69105eL, 0xd56041e4L, | |
64 | 0xa2677172L, 0x3c03e4d1L, 0x4b04d447L, 0xd20d85fdL, 0xa50ab56bL, | |
65 | 0x35b5a8faL, 0x42b2986cL, 0xdbbbc9d6L, 0xacbcf940L, 0x32d86ce3L, | |
66 | 0x45df5c75L, 0xdcd60dcfL, 0xabd13d59L, 0x26d930acL, 0x51de003aL, | |
67 | 0xc8d75180L, 0xbfd06116L, 0x21b4f4b5L, 0x56b3c423L, 0xcfba9599L, | |
68 | 0xb8bda50fL, 0x2802b89eL, 0x5f058808L, 0xc60cd9b2L, 0xb10be924L, | |
69 | 0x2f6f7c87L, 0x58684c11L, 0xc1611dabL, 0xb6662d3dL, 0x76dc4190L, | |
70 | 0x01db7106L, 0x98d220bcL, 0xefd5102aL, 0x71b18589L, 0x06b6b51fL, | |
71 | 0x9fbfe4a5L, 0xe8b8d433L, 0x7807c9a2L, 0x0f00f934L, 0x9609a88eL, | |
72 | 0xe10e9818L, 0x7f6a0dbbL, 0x086d3d2dL, 0x91646c97L, 0xe6635c01L, | |
73 | 0x6b6b51f4L, 0x1c6c6162L, 0x856530d8L, 0xf262004eL, 0x6c0695edL, | |
74 | 0x1b01a57bL, 0x8208f4c1L, 0xf50fc457L, 0x65b0d9c6L, 0x12b7e950L, | |
75 | 0x8bbeb8eaL, 0xfcb9887cL, 0x62dd1ddfL, 0x15da2d49L, 0x8cd37cf3L, | |
76 | 0xfbd44c65L, 0x4db26158L, 0x3ab551ceL, 0xa3bc0074L, 0xd4bb30e2L, | |
77 | 0x4adfa541L, 0x3dd895d7L, 0xa4d1c46dL, 0xd3d6f4fbL, 0x4369e96aL, | |
78 | 0x346ed9fcL, 0xad678846L, 0xda60b8d0L, 0x44042d73L, 0x33031de5L, | |
79 | 0xaa0a4c5fL, 0xdd0d7cc9L, 0x5005713cL, 0x270241aaL, 0xbe0b1010L, | |
80 | 0xc90c2086L, 0x5768b525L, 0x206f85b3L, 0xb966d409L, 0xce61e49fL, | |
81 | 0x5edef90eL, 0x29d9c998L, 0xb0d09822L, 0xc7d7a8b4L, 0x59b33d17L, | |
82 | 0x2eb40d81L, 0xb7bd5c3bL, 0xc0ba6cadL, 0xedb88320L, 0x9abfb3b6L, | |
83 | 0x03b6e20cL, 0x74b1d29aL, 0xead54739L, 0x9dd277afL, 0x04db2615L, | |
84 | 0x73dc1683L, 0xe3630b12L, 0x94643b84L, 0x0d6d6a3eL, 0x7a6a5aa8L, | |
85 | 0xe40ecf0bL, 0x9309ff9dL, 0x0a00ae27L, 0x7d079eb1L, 0xf00f9344L, | |
86 | 0x8708a3d2L, 0x1e01f268L, 0x6906c2feL, 0xf762575dL, 0x806567cbL, | |
87 | 0x196c3671L, 0x6e6b06e7L, 0xfed41b76L, 0x89d32be0L, 0x10da7a5aL, | |
88 | 0x67dd4accL, 0xf9b9df6fL, 0x8ebeeff9L, 0x17b7be43L, 0x60b08ed5L, | |
89 | 0xd6d6a3e8L, 0xa1d1937eL, 0x38d8c2c4L, 0x4fdff252L, 0xd1bb67f1L, | |
90 | 0xa6bc5767L, 0x3fb506ddL, 0x48b2364bL, 0xd80d2bdaL, 0xaf0a1b4cL, | |
91 | 0x36034af6L, 0x41047a60L, 0xdf60efc3L, 0xa867df55L, 0x316e8eefL, | |
92 | 0x4669be79L, 0xcb61b38cL, 0xbc66831aL, 0x256fd2a0L, 0x5268e236L, | |
93 | 0xcc0c7795L, 0xbb0b4703L, 0x220216b9L, 0x5505262fL, 0xc5ba3bbeL, | |
94 | 0xb2bd0b28L, 0x2bb45a92L, 0x5cb36a04L, 0xc2d7ffa7L, 0xb5d0cf31L, | |
95 | 0x2cd99e8bL, 0x5bdeae1dL, 0x9b64c2b0L, 0xec63f226L, 0x756aa39cL, | |
96 | 0x026d930aL, 0x9c0906a9L, 0xeb0e363fL, 0x72076785L, 0x05005713L, | |
97 | 0x95bf4a82L, 0xe2b87a14L, 0x7bb12baeL, 0x0cb61b38L, 0x92d28e9bL, | |
98 | 0xe5d5be0dL, 0x7cdcefb7L, 0x0bdbdf21L, 0x86d3d2d4L, 0xf1d4e242L, | |
99 | 0x68ddb3f8L, 0x1fda836eL, 0x81be16cdL, 0xf6b9265bL, 0x6fb077e1L, | |
100 | 0x18b74777L, 0x88085ae6L, 0xff0f6a70L, 0x66063bcaL, 0x11010b5cL, | |
101 | 0x8f659effL, 0xf862ae69L, 0x616bffd3L, 0x166ccf45L, 0xa00ae278L, | |
102 | 0xd70dd2eeL, 0x4e048354L, 0x3903b3c2L, 0xa7672661L, 0xd06016f7L, | |
103 | 0x4969474dL, 0x3e6e77dbL, 0xaed16a4aL, 0xd9d65adcL, 0x40df0b66L, | |
104 | 0x37d83bf0L, 0xa9bcae53L, 0xdebb9ec5L, 0x47b2cf7fL, 0x30b5ffe9L, | |
105 | 0xbdbdf21cL, 0xcabac28aL, 0x53b39330L, 0x24b4a3a6L, 0xbad03605L, | |
106 | 0xcdd70693L, 0x54de5729L, 0x23d967bfL, 0xb3667a2eL, 0xc4614ab8L, | |
107 | 0x5d681b02L, 0x2a6f2b94L, 0xb40bbe37L, 0xc30c8ea1L, 0x5a05df1bL, | |
108 | 0x2d02ef8dL | |
109 | }; | |
110 | ||
111 | int match2strings(const char *patrn, const char *string) { | |
112 | return !match(patrn,string); | |
113 | } | |
114 | ||
115 | int match2patterns(const char *patrn, const char *string) { | |
116 | return !mmatch(patrn,string); | |
117 | } | |
118 | ||
119 | /* This computes a 32 bit CRC of the data in the buffer, and returns the */ | |
120 | /* CRC. The polynomial used is 0xedb88320. */ | |
121 | /* ============================================================= */ | |
122 | /* COPYRIGHT (C) 1986 Gary S. Brown. You may use this program, or */ | |
123 | /* code or tables extracted from it, as desired without restriction. */ | |
124 | /* Modified by Fox: no more length parameter, always does the whole string */ | |
125 | unsigned long crc32(const char *s) { | |
126 | const char *cp; | |
127 | unsigned long crc32val; | |
128 | ||
129 | crc32val = 0; | |
130 | for (cp=s;*cp;cp++) { | |
131 | crc32val=crc32_tab[(crc32val^(*cp)) & 0xff] ^ (crc32val >> 8); | |
132 | } | |
133 | return crc32val; | |
134 | } | |
135 | ||
136 | /* Case insensitive version of the above */ | |
137 | unsigned long crc32i(const char *s) { | |
138 | const char *cp; | |
139 | unsigned long crc32val; | |
140 | ||
141 | crc32val = 0; | |
142 | for (cp=s;*cp;cp++) { | |
143 | crc32val=crc32_tab[(crc32val^(ToLower(*cp))) & 0xff] ^ (crc32val >> 8); | |
144 | } | |
145 | return crc32val; | |
146 | } | |
147 | ||
148 | /* ircd_strcmp/ircd_strncmp | |
149 | * | |
150 | * Copyright (c) 1987 | |
151 | * The Regents of the University of California. All rights reserved. | |
152 | * | |
153 | * BSD license. | |
154 | * | |
155 | * Modified from this version for ircd usage. | |
156 | */ | |
157 | ||
158 | int ircd_strcmp(const char *s1, const char *s2) { | |
159 | register const char* u1 = s1; | |
160 | register const char* u2 = s2; | |
161 | ||
162 | while(ToLower(*u1) == ToLower(*u2)) { | |
163 | if(!*u1++) | |
164 | return 0; | |
165 | ||
166 | u2++; | |
167 | } | |
168 | return ToLower(*u1) - ToLower(*u2); | |
169 | } | |
170 | ||
171 | ||
172 | int ircd_strncmp(const char *s1, const char *s2, size_t len) { | |
173 | register const char* u1 = s1; | |
174 | register const char* u2 = s2; | |
175 | size_t remaining = len - 1; | |
176 | ||
177 | if(!remaining) | |
178 | return 0; | |
179 | ||
180 | while(ToLower(*u1) == ToLower(*u2)) { | |
181 | if(!*u1++ || !remaining--) | |
182 | return 0; | |
183 | ||
184 | u2++; | |
185 | } | |
186 | ||
187 | return ToLower(*u1) - ToLower(*u2); | |
188 | } | |
189 | ||
190 | /* | |
191 | * delchars: deletes characters occuring in badchars from string | |
192 | */ | |
193 | ||
194 | char *delchars(char *string, const char *badchars) { | |
195 | char *s,*d; | |
196 | const char *b; | |
197 | int isbad; | |
198 | ||
199 | s=d=string; | |
200 | while (*s) { | |
201 | isbad=0; | |
202 | for(b=badchars;*b;b++) { | |
203 | if (*b==*s) { | |
204 | isbad=1; | |
205 | break; | |
206 | } | |
207 | } | |
208 | if (isbad) { | |
209 | s++; | |
210 | } else { | |
211 | *d++=*s++; | |
212 | } | |
213 | } | |
214 | *d='\0'; | |
215 | ||
216 | return string; | |
217 | } | |
218 | ||
219 | /* | |
220 | * IPtostr: | |
221 | * Converts a long into a "p.q.r.s" IP address | |
222 | */ | |
223 | ||
224 | const char *IPlongtostr(unsigned long IP) { | |
225 | static char buf[16]; | |
226 | ||
227 | sprintf(buf,"%lu.%lu.%lu.%lu",(IP>>24),(IP>>16)&255,(IP>>8)&255,IP&255); | |
228 | ||
229 | return buf; | |
230 | } | |
231 | ||
232 | /* | |
233 | * longtoduration: | |
234 | * Converts a specified number of seconds into a duration string. | |
235 | * format: 0 for the "/stats u" compatible output, 1 for more | |
236 | * human-friendly output (that is sometimes format 0), and | |
237 | * 2 for a different human-friendly output. | |
238 | */ | |
239 | ||
240 | const char *longtoduration(unsigned long interval, int format) { | |
241 | int days,hours,minutes,seconds; | |
242 | static char outstring[100]; | |
243 | int pos=0; | |
244 | ||
245 | seconds=interval%60; | |
246 | minutes=(interval%3600)/60; | |
247 | hours=(interval%(3600*24))/3600; | |
248 | days=interval/(3600*24); | |
249 | ||
250 | if(format<2) { | |
251 | if (format==0 || (days>0 && (hours||minutes||seconds))) { | |
252 | sprintf(outstring,"%d day%s, %02d:%02d:%02d", | |
253 | days,(days==1)?"":"s",hours,minutes,seconds); | |
254 | } else if (days>0) { | |
255 | sprintf(outstring, "%d day%s",days,(days==1)?"":"s"); | |
256 | } else { | |
257 | if (hours>0) { | |
258 | pos += sprintf(outstring+pos,"%d hour%s ",hours,hours==1?"":"s"); | |
259 | } | |
260 | if (minutes>0 || (hours>0 && seconds>0)) { | |
261 | pos += sprintf(outstring+pos,"%d minute%s ",minutes,minutes==1?"":"s"); | |
262 | } | |
263 | if (seconds>0 || !interval) { | |
264 | sprintf(outstring+pos,"%d second%s ",seconds,seconds==1?"":"s"); | |
265 | } | |
266 | } | |
267 | } else { | |
268 | if (days>0) { | |
269 | pos += sprintf(outstring+pos, "%dd ",days); | |
270 | } | |
271 | if (hours>0 || (days>0 && (minutes>0 || seconds>0))) { | |
272 | pos += sprintf(outstring+pos, "%dh ",hours); | |
273 | } | |
274 | if (minutes>0 || ((days>0 || hours>0) && seconds>0)) { | |
275 | pos += sprintf(outstring+pos, "%dm ",minutes); | |
276 | } | |
277 | if (seconds>0 || !interval) { | |
278 | sprintf(outstring+pos, "%ds ",seconds); | |
279 | } | |
280 | } | |
281 | ||
282 | return outstring; | |
283 | } | |
284 | ||
285 | /* | |
286 | * durationtolong: | |
287 | * Converts the specified string into a number of seconds, as per O | |
288 | */ | |
289 | ||
290 | int durationtolong(const char *string) { | |
291 | int total=0; | |
292 | int current=0; | |
293 | char *ch=(char *)string,*och; | |
294 | ||
295 | while (*ch) { | |
296 | och=ch; | |
297 | current=strtol(ch,&ch,10); | |
298 | if (och==ch) /* No numbers found */ | |
299 | break; | |
300 | if (current) { | |
301 | switch (*ch++) { | |
302 | case '\0': | |
303 | ch--; | |
304 | /* Drop through */ | |
305 | case 's': | |
306 | total+=current; | |
307 | break; | |
308 | ||
309 | case 'm': | |
310 | total+=(current * 60); | |
311 | break; | |
312 | ||
313 | case 'h': | |
314 | total+=(current * 3600); | |
315 | break; | |
316 | ||
317 | case 'd': | |
318 | total+=(current * 86400); | |
319 | break; | |
320 | ||
321 | case 'w': | |
322 | total+=(current * 604800); | |
323 | break; | |
324 | ||
325 | case 'M': | |
326 | total+=(current * 2592000); | |
327 | break; | |
328 | ||
329 | case 'y': | |
330 | total+=(current * 31557600); | |
331 | } | |
332 | } | |
333 | } | |
334 | return total; | |
335 | } | |
336 | ||
337 | /* | |
338 | * mmatch() | |
339 | * | |
340 | * Written by Run (carlo@runaway.xs4all.nl), 25-10-96 | |
341 | * | |
342 | * | |
343 | * From: Carlo Wood <carlo@runaway.xs4all.nl> | |
344 | * Message-Id: <199609021026.MAA02393@runaway.xs4all.nl> | |
345 | * Subject: [C-Com] Analysis for `mmatch' (was: gline4 problem) | |
346 | * To: coder-com@mail.undernet.org (coder committee) | |
347 | * Date: Mon, 2 Sep 1996 12:26:01 +0200 (MET DST) | |
348 | * | |
349 | * We need a new function `mmatch(const char *old_mask, const char *new_mask)' | |
350 | * which returns `true' likewise the current `match' (start with copying it), | |
351 | * but which treats '*' and '?' in `new_mask' differently (not "\*" and "\?" !) | |
352 | * as follows: a '*' in `new_mask' does not match a '?' in `old_mask' and | |
353 | * a '?' in `new_mask' does not match a '\?' in `old_mask'. | |
354 | * And ofcourse... a '*' in `new_mask' does not match a '\*' in `old_mask'... | |
355 | * And last but not least, '\?' and '\*' in `new_mask' now become one character. | |
356 | * | |
357 | * Kindly BSD licensed by Run for Newserv. | |
358 | */ | |
359 | ||
360 | int mmatch(const char *old_mask, const char *new_mask) | |
361 | { | |
362 | const char *m = old_mask; | |
363 | const char *n = new_mask; | |
364 | const char *ma = m; | |
365 | const char *na = n; | |
366 | int wild = 0; | |
367 | int mq = 0, nq = 0; | |
368 | ||
369 | while (1) | |
370 | { | |
371 | if (*m == '*') | |
372 | { | |
373 | while (*m == '*') | |
374 | m++; | |
375 | wild = 1; | |
376 | ma = m; | |
377 | na = n; | |
378 | } | |
379 | ||
380 | if (!*m) | |
381 | { | |
382 | if (!*n) | |
383 | return 0; | |
384 | for (m--; (m > old_mask) && (*m == '?'); m--) | |
385 | ; | |
386 | if ((*m == '*') && (m > old_mask) && (m[-1] != '\\')) | |
387 | return 0; | |
388 | if (!wild) | |
389 | return 1; | |
390 | m = ma; | |
391 | ||
392 | /* Added to `mmatch' : Because '\?' and '\*' now is one character: */ | |
393 | if ((*na == '\\') && ((na[1] == '*') || (na[1] == '?'))) | |
394 | ++na; | |
395 | ||
396 | n = ++na; | |
397 | } | |
398 | else if (!*n) | |
399 | { | |
400 | while (*m == '*') | |
401 | m++; | |
402 | return (*m != 0); | |
403 | } | |
404 | if ((*m == '\\') && ((m[1] == '*') || (m[1] == '?'))) | |
405 | { | |
406 | m++; | |
407 | mq = 1; | |
408 | } | |
409 | else | |
410 | mq = 0; | |
411 | ||
412 | /* Added to `mmatch' : Because '\?' and '\*' now is one character: */ | |
413 | if ((*n == '\\') && ((n[1] == '*') || (n[1] == '?'))) | |
414 | { | |
415 | n++; | |
416 | nq = 1; | |
417 | } | |
418 | else | |
419 | nq = 0; | |
420 | ||
421 | /* | |
422 | * This `if' has been changed compared to match() to do the following: | |
423 | * Match when: | |
424 | * old (m) new (n) boolean expression | |
425 | * * any (*m == '*' && !mq) || | |
426 | * ? any except '*' (*m == '?' && !mq && (*n != '*' || nq)) || | |
427 | * any except * or ? same as m (!((*m == '*' || *m == '?') && !mq) && | |
428 | * ToLower(*m) == ToLower(*n) && | |
429 | * !((mq && !nq) || (!mq && nq))) | |
430 | * | |
431 | * Here `any' also includes \* and \? ! | |
432 | * | |
433 | * After reworking the boolean expressions, we get: | |
434 | * (Optimized to use boolean shortcircuits, with most frequently occuring | |
435 | * cases upfront (which took 2 hours!)). | |
436 | */ | |
437 | if ((*m == '*' && !mq) || | |
438 | ((!mq || nq) && ToLower(*m) == ToLower(*n)) || | |
439 | (*m == '?' && !mq && (*n != '*' || nq))) | |
440 | { | |
441 | if (*m) | |
442 | m++; | |
443 | if (*n) | |
444 | n++; | |
445 | } | |
446 | else | |
447 | { | |
448 | if (!wild) | |
449 | return 1; | |
450 | m = ma; | |
451 | ||
452 | /* Added to `mmatch' : Because '\?' and '\*' now is one character: */ | |
453 | if ((*na == '\\') && ((na[1] == '*') || (na[1] == '?'))) | |
454 | ++na; | |
455 | ||
456 | n = ++na; | |
457 | } | |
458 | } | |
459 | } | |
460 | ||
461 | /* | |
462 | * Compare if a given string (name) matches the given | |
463 | * mask (which can contain wild cards: '*' - match any | |
464 | * number of chars, '?' - match any single character. | |
465 | * | |
466 | * return 0, if match | |
467 | * 1, if no match | |
468 | */ | |
469 | ||
470 | /* | |
471 | * match | |
472 | * | |
473 | * Rewritten by Andrea Cocito (Nemesi), November 1998. | |
474 | * | |
475 | * Permission kindly granted by Andrea to be used under the BSD license. | |
476 | * | |
477 | */ | |
478 | ||
479 | /****************** Nemesi's match() ***************/ | |
480 | ||
481 | int match(const char *mask, const char *string) | |
482 | { | |
483 | const char *m = mask, *s = string; | |
484 | char ch; | |
485 | const char *bm, *bs; /* Will be reg anyway on a decent CPU/compiler */ | |
486 | ||
487 | /* Process the "head" of the mask, if any */ | |
488 | while ((ch = *m++) && (ch != '*')) | |
489 | switch (ch) | |
490 | { | |
491 | case '\\': | |
492 | if (*m == '?' || *m == '*') | |
493 | ch = *m++; | |
494 | default: | |
495 | if (ToLower(*s) != ToLower(ch)) | |
496 | return 1; | |
497 | case '?': | |
498 | if (!*s++) | |
499 | return 1; | |
500 | }; | |
501 | if (!ch) | |
502 | return *s; | |
503 | ||
504 | /* We got a star: quickly find if/where we match the next char */ | |
505 | got_star: | |
506 | bm = m; /* Next try rollback here */ | |
507 | while ((ch = *m++)) | |
508 | switch (ch) | |
509 | { | |
510 | case '?': | |
511 | if (!*s++) | |
512 | return 1; | |
513 | case '*': | |
514 | bm = m; | |
515 | continue; /* while */ | |
516 | case '\\': | |
517 | if (*m == '?' || *m == '*') | |
518 | ch = *m++; | |
519 | default: | |
520 | goto break_while; /* C is structured ? */ | |
521 | }; | |
522 | break_while: | |
523 | if (!ch) | |
524 | return 0; /* mask ends with '*', we got it */ | |
525 | ch = ToLower(ch); | |
526 | while (ToLower(*s++) != ch) | |
527 | if (!*s) | |
528 | return 1; | |
529 | bs = s; /* Next try start from here */ | |
530 | ||
531 | /* Check the rest of the "chunk" */ | |
532 | while ((ch = *m++)) | |
533 | { | |
534 | switch (ch) | |
535 | { | |
536 | case '*': | |
537 | goto got_star; | |
538 | case '\\': | |
539 | if (*m == '?' || *m == '*') | |
540 | ch = *m++; | |
541 | default: | |
542 | if (ToLower(*s) != ToLower(ch)) | |
543 | { | |
544 | /* If we've run out of string, give up */ | |
545 | if (!*bs) | |
546 | return 1; | |
547 | m = bm; | |
548 | s = bs; | |
549 | goto got_star; | |
550 | }; | |
551 | case '?': | |
552 | if (!*s++) | |
553 | return 1; | |
554 | }; | |
555 | }; | |
556 | if (*s) | |
557 | { | |
558 | m = bm; | |
559 | s = bs; | |
560 | goto got_star; | |
561 | }; | |
562 | return 0; | |
563 | } | |
564 | ||
565 | /* | |
566 | * collapse() | |
567 | * Collapse a pattern string into minimal components. | |
568 | * This particular version is "in place", so that it changes the pattern | |
569 | * which is to be reduced to a "minimal" size. | |
570 | * | |
571 | * (C) Carlo Wood - 6 Oct 1998 | |
572 | * Speedup rewrite by Andrea Cocito, December 1998. | |
573 | * Note that this new optimized alghoritm can *only* work in place. | |
574 | * | |
575 | * Permission kindly granted by Andrea to be used under the BSD license. | |
576 | * | |
577 | */ | |
578 | ||
579 | char *collapse(char *mask) | |
580 | { | |
581 | int star = 0; | |
582 | char *m = mask; | |
583 | char *b; | |
584 | ||
585 | if (m) | |
586 | { | |
587 | do | |
588 | { | |
589 | if ((*m == '*') && ((m[1] == '*') || (m[1] == '?'))) | |
590 | { | |
591 | b = m; | |
592 | do | |
593 | { | |
594 | if (*m == '*') | |
595 | star = 1; | |
596 | else | |
597 | { | |
598 | if (star && (*m != '?')) | |
599 | { | |
600 | *b++ = '*'; | |
601 | star = 0; | |
602 | }; | |
603 | *b++ = *m; | |
604 | if ((*m == '\\') && ((m[1] == '*') || (m[1] == '?'))) | |
605 | *b++ = *++m; | |
606 | }; | |
607 | } | |
608 | while (*m++); | |
609 | break; | |
610 | } | |
611 | else | |
612 | { | |
613 | if ((*m == '\\') && ((m[1] == '*') || (m[1] == '?'))) | |
614 | m++; | |
615 | }; | |
616 | } | |
617 | while (*m++); | |
618 | }; | |
619 | return mask; | |
620 | } | |
621 | ||
622 | /* a protected version of atoi that will return an error if broke/etc */ | |
623 | int protectedatoi(char *buf, int *value) { | |
624 | char *ep; | |
625 | long lval; | |
626 | ||
627 | errno = 0; | |
628 | lval = strtol(buf, &ep, 10); | |
629 | if (buf[0] == '\0' || *ep != '\0') | |
630 | return 0; | |
631 | ||
632 | if ((errno == ERANGE && (lval == LONG_MAX || lval == LONG_MIN)) || (lval > INT_MAX || lval < INT_MIN)) | |
633 | return 0; | |
634 | ||
635 | *value = lval; | |
636 | return 1; | |
637 | } |