]>
jfr.im git - irc/quakenet/newserv.git/blob - lib/irc_string.c
3 #include "irc_string.h"
4 #include "chattr.tab.c"
9 static unsigned long crc32_tab
[] = {
10 0x00000000L
, 0x77073096L
, 0xee0e612cL
, 0x990951baL
, 0x076dc419L
,
11 0x706af48fL
, 0xe963a535L
, 0x9e6495a3L
, 0x0edb8832L
, 0x79dcb8a4L
,
12 0xe0d5e91eL
, 0x97d2d988L
, 0x09b64c2bL
, 0x7eb17cbdL
, 0xe7b82d07L
,
13 0x90bf1d91L
, 0x1db71064L
, 0x6ab020f2L
, 0xf3b97148L
, 0x84be41deL
,
14 0x1adad47dL
, 0x6ddde4ebL
, 0xf4d4b551L
, 0x83d385c7L
, 0x136c9856L
,
15 0x646ba8c0L
, 0xfd62f97aL
, 0x8a65c9ecL
, 0x14015c4fL
, 0x63066cd9L
,
16 0xfa0f3d63L
, 0x8d080df5L
, 0x3b6e20c8L
, 0x4c69105eL
, 0xd56041e4L
,
17 0xa2677172L
, 0x3c03e4d1L
, 0x4b04d447L
, 0xd20d85fdL
, 0xa50ab56bL
,
18 0x35b5a8faL
, 0x42b2986cL
, 0xdbbbc9d6L
, 0xacbcf940L
, 0x32d86ce3L
,
19 0x45df5c75L
, 0xdcd60dcfL
, 0xabd13d59L
, 0x26d930acL
, 0x51de003aL
,
20 0xc8d75180L
, 0xbfd06116L
, 0x21b4f4b5L
, 0x56b3c423L
, 0xcfba9599L
,
21 0xb8bda50fL
, 0x2802b89eL
, 0x5f058808L
, 0xc60cd9b2L
, 0xb10be924L
,
22 0x2f6f7c87L
, 0x58684c11L
, 0xc1611dabL
, 0xb6662d3dL
, 0x76dc4190L
,
23 0x01db7106L
, 0x98d220bcL
, 0xefd5102aL
, 0x71b18589L
, 0x06b6b51fL
,
24 0x9fbfe4a5L
, 0xe8b8d433L
, 0x7807c9a2L
, 0x0f00f934L
, 0x9609a88eL
,
25 0xe10e9818L
, 0x7f6a0dbbL
, 0x086d3d2dL
, 0x91646c97L
, 0xe6635c01L
,
26 0x6b6b51f4L
, 0x1c6c6162L
, 0x856530d8L
, 0xf262004eL
, 0x6c0695edL
,
27 0x1b01a57bL
, 0x8208f4c1L
, 0xf50fc457L
, 0x65b0d9c6L
, 0x12b7e950L
,
28 0x8bbeb8eaL
, 0xfcb9887cL
, 0x62dd1ddfL
, 0x15da2d49L
, 0x8cd37cf3L
,
29 0xfbd44c65L
, 0x4db26158L
, 0x3ab551ceL
, 0xa3bc0074L
, 0xd4bb30e2L
,
30 0x4adfa541L
, 0x3dd895d7L
, 0xa4d1c46dL
, 0xd3d6f4fbL
, 0x4369e96aL
,
31 0x346ed9fcL
, 0xad678846L
, 0xda60b8d0L
, 0x44042d73L
, 0x33031de5L
,
32 0xaa0a4c5fL
, 0xdd0d7cc9L
, 0x5005713cL
, 0x270241aaL
, 0xbe0b1010L
,
33 0xc90c2086L
, 0x5768b525L
, 0x206f85b3L
, 0xb966d409L
, 0xce61e49fL
,
34 0x5edef90eL
, 0x29d9c998L
, 0xb0d09822L
, 0xc7d7a8b4L
, 0x59b33d17L
,
35 0x2eb40d81L
, 0xb7bd5c3bL
, 0xc0ba6cadL
, 0xedb88320L
, 0x9abfb3b6L
,
36 0x03b6e20cL
, 0x74b1d29aL
, 0xead54739L
, 0x9dd277afL
, 0x04db2615L
,
37 0x73dc1683L
, 0xe3630b12L
, 0x94643b84L
, 0x0d6d6a3eL
, 0x7a6a5aa8L
,
38 0xe40ecf0bL
, 0x9309ff9dL
, 0x0a00ae27L
, 0x7d079eb1L
, 0xf00f9344L
,
39 0x8708a3d2L
, 0x1e01f268L
, 0x6906c2feL
, 0xf762575dL
, 0x806567cbL
,
40 0x196c3671L
, 0x6e6b06e7L
, 0xfed41b76L
, 0x89d32be0L
, 0x10da7a5aL
,
41 0x67dd4accL
, 0xf9b9df6fL
, 0x8ebeeff9L
, 0x17b7be43L
, 0x60b08ed5L
,
42 0xd6d6a3e8L
, 0xa1d1937eL
, 0x38d8c2c4L
, 0x4fdff252L
, 0xd1bb67f1L
,
43 0xa6bc5767L
, 0x3fb506ddL
, 0x48b2364bL
, 0xd80d2bdaL
, 0xaf0a1b4cL
,
44 0x36034af6L
, 0x41047a60L
, 0xdf60efc3L
, 0xa867df55L
, 0x316e8eefL
,
45 0x4669be79L
, 0xcb61b38cL
, 0xbc66831aL
, 0x256fd2a0L
, 0x5268e236L
,
46 0xcc0c7795L
, 0xbb0b4703L
, 0x220216b9L
, 0x5505262fL
, 0xc5ba3bbeL
,
47 0xb2bd0b28L
, 0x2bb45a92L
, 0x5cb36a04L
, 0xc2d7ffa7L
, 0xb5d0cf31L
,
48 0x2cd99e8bL
, 0x5bdeae1dL
, 0x9b64c2b0L
, 0xec63f226L
, 0x756aa39cL
,
49 0x026d930aL
, 0x9c0906a9L
, 0xeb0e363fL
, 0x72076785L
, 0x05005713L
,
50 0x95bf4a82L
, 0xe2b87a14L
, 0x7bb12baeL
, 0x0cb61b38L
, 0x92d28e9bL
,
51 0xe5d5be0dL
, 0x7cdcefb7L
, 0x0bdbdf21L
, 0x86d3d2d4L
, 0xf1d4e242L
,
52 0x68ddb3f8L
, 0x1fda836eL
, 0x81be16cdL
, 0xf6b9265bL
, 0x6fb077e1L
,
53 0x18b74777L
, 0x88085ae6L
, 0xff0f6a70L
, 0x66063bcaL
, 0x11010b5cL
,
54 0x8f659effL
, 0xf862ae69L
, 0x616bffd3L
, 0x166ccf45L
, 0xa00ae278L
,
55 0xd70dd2eeL
, 0x4e048354L
, 0x3903b3c2L
, 0xa7672661L
, 0xd06016f7L
,
56 0x4969474dL
, 0x3e6e77dbL
, 0xaed16a4aL
, 0xd9d65adcL
, 0x40df0b66L
,
57 0x37d83bf0L
, 0xa9bcae53L
, 0xdebb9ec5L
, 0x47b2cf7fL
, 0x30b5ffe9L
,
58 0xbdbdf21cL
, 0xcabac28aL
, 0x53b39330L
, 0x24b4a3a6L
, 0xbad03605L
,
59 0xcdd70693L
, 0x54de5729L
, 0x23d967bfL
, 0xb3667a2eL
, 0xc4614ab8L
,
60 0x5d681b02L
, 0x2a6f2b94L
, 0xb40bbe37L
, 0xc30c8ea1L
, 0x5a05df1bL
,
65 /* OLD MATCH FUNCTIONS */
67 /* Next proc is stolen from some library
68 http://avrc.city.ac.uk/nethack/nethack-cxref-3.3.1/src/hacklib.c.src.html */
69 int match2strings(const char *patrn
, const char *strng
) {
72 : Simple pattern matcher: '*' matches 0 or more characters, '?' matches
73 : any single character. Returns TRUE if 'strng' matches 'patrn'.
77 s
= ToLower(*strng
++); p
= ToLower(*patrn
++); /* get next chars and pre-advance */
78 if (!p
) /* end of pattern */
79 return((s
== '\0')); /* matches iff end of string too */
80 else if (p
== '*') /* wildcard reached */
81 return(((!*patrn
|| match2strings(patrn
, strng
-1)) ? 1 : s
? match2strings(patrn
-1, strng
) : 0));
82 else if (p
!= s
&& (p
!= '?' || !s
)) /* check single character */
83 return 0; /* doesn't match */
84 else /* return pmatch(patrn, strng); */
85 goto pmatch_top
; /* optimize tail recursion */
88 /* Adapted version of the above, to check if a new ban encloses another.
89 * We want to know if one ban completely encloses another. We do exactly the
90 * same thing as before, but we don't allow a '?' in the pattern to match a '*'
91 * in the string. Also made case insensitive.
93 int match2patterns(const char *patrn
, const char *strng
) {
96 : Simple pattern matcher: '*' matches 0 or more characters, '?' matches
97 : any single character. Returns TRUE if 'strng' matches 'patrn'.
100 s
= ToLower(*strng
++); p
= ToLower(*patrn
++); /* get next chars and pre-advance */
101 if (!p
) /* end of pattern */
102 return((s
== '\0')); /* matches iff end of string too */
103 else if (p
== '*') /* wildcard reached */
104 return(((!*patrn
|| match2strings(patrn
, strng
-1)) ? 1 : s
? match2strings(patrn
-1, strng
) : 0));
105 else if (p
!= s
&& (s
== '*' || p
!= '?' || !s
)) /* check single character */
106 return 0; /* doesn't match */
107 else /* return pmatch(patrn, strng); */
108 goto pmatch_top
; /* optimize tail recursion */
112 int match2strings(const char *patrn
, const char *string
) {
113 return !match(patrn
,string
);
116 int match2patterns(const char *patrn
, const char *string
) {
117 return !mmatch(patrn
,string
);
121 /* This computes a 32 bit CRC of the data in the buffer, and returns the */
122 /* CRC. The polynomial used is 0xedb88320. */
123 /* ============================================================= */
124 /* COPYRIGHT (C) 1986 Gary S. Brown. You may use this program, or */
125 /* code or tables extracted from it, as desired without restriction. */
126 /* Modified by Fox: no more length parameter, always does the whole string */
127 unsigned long crc32(const char *s
) {
129 unsigned long crc32val
;
132 for (cp
=s
;*cp
;cp
++) {
133 crc32val
=crc32_tab
[(crc32val
^(*cp
)) & 0xff] ^ (crc32val
>> 8);
138 /* Case insensitive version of the above */
139 unsigned long crc32i(const char *s
) {
141 unsigned long crc32val
;
144 for (cp
=s
;*cp
;cp
++) {
145 crc32val
=crc32_tab
[(crc32val
^(ToLower(*cp
))) & 0xff] ^ (crc32val
>> 8);
151 * ircd_strcmp - case insensitive comparison of 2 strings
153 int ircd_strcmp(const char *a
, const char *b
) {
156 while (ToLower(*ra
) == ToLower(*rb
)) {
166 * ircd_strncmp - counted case insensitive comparison of 2 strings
168 int ircd_strncmp(const char *a
, const char *b
, size_t n
) {
174 while (ToLower(*ra
) == ToLower(*rb
)) {
175 if (!*ra
++ || !left
--)
184 * delchars: deletes characters occuring in badchars from string
187 char *delchars(char *string
, const char *badchars
) {
195 for(b
=badchars
;*b
;b
++) {
214 * Converts a long into a "p.q.r.s" IP address
217 const char *IPtostr(unsigned long IP
) {
220 sprintf(buf
,"%lu.%lu.%lu.%lu",(IP
>>24),(IP
>>16)&255,(IP
>>8)&255,IP
&255);
227 * Converts a specified number of seconds into a duration string.
228 * format: 0 for the "/stats u" compatible output, 1 for more human-friendly output.
231 const char *longtoduration(unsigned long interval
, int format
) {
232 int days
,hours
,minutes
,seconds
;
233 static char outstring
[50];
237 minutes
=(interval%3600
)/60;
238 hours
=(interval
%(3600*24))/3600;
239 days
=interval
/(3600*24);
241 if (days
>0 || format
==0) {
242 sprintf(outstring
,"%d day%s, %02d:%02d:%02d",
243 days
,(days
==1)?"":"s",hours
,minutes
,seconds
);
246 pos
+= sprintf(outstring
+pos
,"%d hour%s ",hours
,hours
==1?"":"s");
248 if (minutes
>0 || (hours
>0 && seconds
>0)) {
249 pos
+= sprintf(outstring
+pos
,"%d minute%s ",minutes
,minutes
==1?"":"s");
252 pos
+= sprintf(outstring
+pos
,"%d second%s ",seconds
,seconds
==1?"":"s");
261 * Converts the specified string into a number of seconds, as per O
264 int durationtolong(const char *string
) {
267 char *ch
=string
,*och
;
271 current
=strtol(ch
,&ch
,10);
272 if (och
==ch
) /* No numbers found */
284 total
+=(current
* 60);
288 total
+=(current
* 3600);
292 total
+=(current
* 86400);
296 total
+=(current
* 604800);
300 total
+=(current
* 2592000);
304 total
+=(current
* 31557600);
313 * Written by Run (carlo@runaway.xs4all.nl), 25-10-96
316 * From: Carlo Wood <carlo@runaway.xs4all.nl>
317 * Message-Id: <199609021026.MAA02393@runaway.xs4all.nl>
318 * Subject: [C-Com] Analysis for `mmatch' (was: gline4 problem)
319 * To: coder-com@mail.undernet.org (coder committee)
320 * Date: Mon, 2 Sep 1996 12:26:01 +0200 (MET DST)
322 * We need a new function `mmatch(const char *old_mask, const char *new_mask)'
323 * which returns `true' likewise the current `match' (start with copying it),
324 * but which treats '*' and '?' in `new_mask' differently (not "\*" and "\?" !)
325 * as follows: a '*' in `new_mask' does not match a '?' in `old_mask' and
326 * a '?' in `new_mask' does not match a '\?' in `old_mask'.
327 * And ofcourse... a '*' in `new_mask' does not match a '\*' in `old_mask'...
328 * And last but not least, '\?' and '\*' in `new_mask' now become one character.
331 int mmatch(const char *old_mask
, const char *new_mask
)
333 const char *m
= old_mask
;
334 const char *n
= new_mask
;
355 for (m
--; (m
> old_mask
) && (*m
== '?'); m
--)
357 if ((*m
== '*') && (m
> old_mask
) && (m
[-1] != '\\'))
363 /* Added to `mmatch' : Because '\?' and '\*' now is one character: */
364 if ((*na
== '\\') && ((na
[1] == '*') || (na
[1] == '?')))
375 if ((*m
== '\\') && ((m
[1] == '*') || (m
[1] == '?')))
383 /* Added to `mmatch' : Because '\?' and '\*' now is one character: */
384 if ((*n
== '\\') && ((n
[1] == '*') || (n
[1] == '?')))
393 * This `if' has been changed compared to match() to do the following:
395 * old (m) new (n) boolean expression
396 * * any (*m == '*' && !mq) ||
397 * ? any except '*' (*m == '?' && !mq && (*n != '*' || nq)) ||
398 * any except * or ? same as m (!((*m == '*' || *m == '?') && !mq) &&
399 * ToLower(*m) == ToLower(*n) &&
400 * !((mq && !nq) || (!mq && nq)))
402 * Here `any' also includes \* and \? !
404 * After reworking the boolean expressions, we get:
405 * (Optimized to use boolean shortcircuits, with most frequently occuring
406 * cases upfront (which took 2 hours!)).
408 if ((*m
== '*' && !mq
) ||
409 ((!mq
|| nq
) && ToLower(*m
) == ToLower(*n
)) ||
410 (*m
== '?' && !mq
&& (*n
!= '*' || nq
)))
423 /* Added to `mmatch' : Because '\?' and '\*' now is one character: */
424 if ((*na
== '\\') && ((na
[1] == '*') || (na
[1] == '?')))
433 * Compare if a given string (name) matches the given
434 * mask (which can contain wild cards: '*' - match any
435 * number of chars, '?' - match any single character.
444 * Rewritten by Andrea Cocito (Nemesi), November 1998.
448 /****************** Nemesi's match() ***************/
450 int match(const char *mask
, const char *string
)
452 const char *m
= mask
, *s
= string
;
454 const char *bm
, *bs
; /* Will be reg anyway on a decent CPU/compiler */
456 /* Process the "head" of the mask, if any */
457 while ((ch
= *m
++) && (ch
!= '*'))
461 if (*m
== '?' || *m
== '*')
464 if (ToLower(*s
) != ToLower(ch
))
473 /* We got a star: quickly find if/where we match the next char */
475 bm
= m
; /* Next try rollback here */
484 continue; /* while */
486 if (*m
== '?' || *m
== '*')
489 goto break_while
; /* C is structured ? */
493 return 0; /* mask ends with '*', we got it */
495 while (ToLower(*s
++) != ch
)
498 bs
= s
; /* Next try start from here */
500 /* Check the rest of the "chunk" */
508 if (*m
== '?' || *m
== '*')
511 if (ToLower(*s
) != ToLower(ch
))
513 /* If we've run out of string, give up */
536 * Collapse a pattern string into minimal components.
537 * This particular version is "in place", so that it changes the pattern
538 * which is to be reduced to a "minimal" size.
540 * (C) Carlo Wood - 6 Oct 1998
541 * Speedup rewrite by Andrea Cocito, December 1998.
542 * Note that this new optimized alghoritm can *only* work in place.
545 char *collapse(char *mask
)
555 if ((*m
== '*') && ((m
[1] == '*') || (m
[1] == '?')))
564 if (star
&& (*m
!= '?'))
570 if ((*m
== '\\') && ((m
[1] == '*') || (m
[1] == '?')))
579 if ((*m
== '\\') && ((m
[1] == '*') || (m
[1] == '?')))
588 /* a protected version of atoi that will return an error if broke/etc */
589 int protectedatoi(char *buf
, int *value
) {
594 lval
= strtol(buf
, &ep
, 10);
595 if (buf
[0] == '\0' || *ep
!= '\0')
598 if ((errno
== ERANGE
&& (lval
== LONG_MAX
|| lval
== LONG_MIN
)) || (lval
> INT_MAX
|| lval
< INT_MIN
))