| 1 |
/* |
| 2 |
* match.C: Casemapping and matching functions. |
| 3 |
* Rights to this code are documented in doc/pod/license.pod. |
| 4 |
* |
| 5 |
* Copyright © 2005-2007 Atheme Project (http://www.atheme.org) |
| 6 |
*/ |
| 7 |
|
| 8 |
static char const rcsid[] = "$Id$"; |
| 9 |
|
| 10 |
#include "atheme.h" |
| 11 |
|
| 12 |
#define BadPtr(x) (!(x) || (*(x) == '\0')) |
| 13 |
|
| 14 |
int match_mapping = MATCH_RFC1459; |
| 15 |
|
| 16 |
const unsigned char ToLowerTab[] = { |
| 17 |
0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xa, |
| 18 |
0xb, 0xc, 0xd, 0xe, 0xf, 0x10, 0x11, 0x12, 0x13, 0x14, |
| 19 |
0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, |
| 20 |
0x1e, 0x1f, |
| 21 |
' ', '!', '"', '#', '$', '%', '&', 0x27, '(', ')', |
| 22 |
'*', '+', ',', '-', '.', '/', |
| 23 |
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', |
| 24 |
':', ';', '<', '=', '>', '?', |
| 25 |
'@', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', |
| 26 |
'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', |
| 27 |
't', 'u', 'v', 'w', 'x', 'y', 'z', '{', '|', '}', '~', |
| 28 |
'_', |
| 29 |
'`', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', |
| 30 |
'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', |
| 31 |
't', 'u', 'v', 'w', 'x', 'y', 'z', '{', '|', '}', '~', |
| 32 |
0x7f, |
| 33 |
0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, |
| 34 |
0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, |
| 35 |
0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, |
| 36 |
0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, |
| 37 |
0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9, |
| 38 |
0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, |
| 39 |
0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, |
| 40 |
0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, |
| 41 |
0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, |
| 42 |
0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, |
| 43 |
0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, |
| 44 |
0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf, |
| 45 |
0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, |
| 46 |
0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, |
| 47 |
0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, |
| 48 |
0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff |
| 49 |
}; |
| 50 |
|
| 51 |
const unsigned char ToUpperTab[] = { |
| 52 |
0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8, 0x9, 0xa, |
| 53 |
0xb, 0xc, 0xd, 0xe, 0xf, 0x10, 0x11, 0x12, 0x13, 0x14, |
| 54 |
0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, |
| 55 |
0x1e, 0x1f, |
| 56 |
' ', '!', '"', '#', '$', '%', '&', 0x27, '(', ')', |
| 57 |
'*', '+', ',', '-', '.', '/', |
| 58 |
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', |
| 59 |
':', ';', '<', '=', '>', '?', |
| 60 |
'@', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', |
| 61 |
'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', |
| 62 |
'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '[', '\\', ']', '^', |
| 63 |
0x5f, |
| 64 |
'`', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', |
| 65 |
'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', |
| 66 |
'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '[', '\\', ']', '^', |
| 67 |
0x7f, |
| 68 |
0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, |
| 69 |
0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f, |
| 70 |
0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, |
| 71 |
0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f, |
| 72 |
0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9, |
| 73 |
0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf, |
| 74 |
0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, |
| 75 |
0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf, |
| 76 |
0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, |
| 77 |
0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf, |
| 78 |
0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, |
| 79 |
0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf, |
| 80 |
0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, |
| 81 |
0xea, 0xeb, 0xec, 0xed, 0xee, 0xef, |
| 82 |
0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, |
| 83 |
0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff |
| 84 |
}; |
| 85 |
|
| 86 |
int |
| 87 |
ToLower (int c) |
| 88 |
{ |
| 89 |
if (match_mapping == MATCH_ASCII) |
| 90 |
return tolower (c); |
| 91 |
/* else */ |
| 92 |
return (ToLowerTab[(unsigned char) (c)]); |
| 93 |
} |
| 94 |
|
| 95 |
int |
| 96 |
ToUpper (int c) |
| 97 |
{ |
| 98 |
if (match_mapping == MATCH_ASCII) |
| 99 |
return toupper (c); |
| 100 |
/* else */ |
| 101 |
return (ToUpperTab[(unsigned char) (c)]); |
| 102 |
} |
| 103 |
|
| 104 |
void |
| 105 |
set_match_mapping (int type) |
| 106 |
{ |
| 107 |
match_mapping = type; |
| 108 |
} |
| 109 |
|
| 110 |
#define MAX_ITERATIONS 512 |
| 111 |
/* |
| 112 |
** Compare if a given string (name) matches the given |
| 113 |
** mask (which can contain wild cards: '*' - match any |
| 114 |
** number of chars, '?' - match any single character. |
| 115 |
** |
| 116 |
** return 0, if match |
| 117 |
** 1, if no match |
| 118 |
*/ |
| 119 |
|
| 120 |
/* |
| 121 |
** match() |
| 122 |
** Iterative matching function, rather than recursive. |
| 123 |
** Written by Douglas A Lewis (dalewis@acsu.buffalo.edu) |
| 124 |
*/ |
| 125 |
|
| 126 |
int |
| 127 |
match (const char *mask, const char *name) |
| 128 |
{ |
| 129 |
const u_char *m = (const u_char *) mask, *n = (const u_char *) name; |
| 130 |
const char *ma = mask, *na = name; |
| 131 |
int wild = 0, q = 0, calls = 0; |
| 132 |
|
| 133 |
if (!mask || !name) |
| 134 |
return 1; |
| 135 |
|
| 136 |
/* if the mask is "*", it matches everything */ |
| 137 |
if ((*m == '*') && (*(m + 1) == '\0')) |
| 138 |
return 0; |
| 139 |
|
| 140 |
while (1) |
| 141 |
{ |
| 142 |
#ifdef MAX_ITERATIONS |
| 143 |
if (calls++ > MAX_ITERATIONS) |
| 144 |
break; |
| 145 |
#endif |
| 146 |
|
| 147 |
if (*m == '*') |
| 148 |
{ |
| 149 |
while (*m == '*') |
| 150 |
m++; |
| 151 |
wild = 1; |
| 152 |
ma = (const char *) m; |
| 153 |
na = (const char *) n; |
| 154 |
} |
| 155 |
|
| 156 |
if (!*m) |
| 157 |
{ |
| 158 |
if (!*n) |
| 159 |
return 0; |
| 160 |
for (m--; (m > (const u_char *) mask) && (*m == '?' || *m == '&' || *m == '#'); m--) |
| 161 |
; |
| 162 |
if ((m > (const u_char *) mask) && (*m == '*') && (m[-1] != '\\')) |
| 163 |
return 0; |
| 164 |
if (!wild) |
| 165 |
return 1; |
| 166 |
m = (const u_char *) ma; |
| 167 |
n = (const u_char *) ++na; |
| 168 |
} |
| 169 |
else if (!*n) |
| 170 |
return 1; |
| 171 |
if ((*m == '\\') && ((m[1] == '*') || (m[1] == '?') || (m[1] == '&') || (m[1] == '#') || (m[1] == '%'))) |
| 172 |
{ |
| 173 |
m++; |
| 174 |
q = 1; |
| 175 |
} |
| 176 |
else |
| 177 |
q = 0; |
| 178 |
|
| 179 |
if ((ToLower (*m) != ToLower (*n)) && (((*m != '?') && !(*m == '&' && IsAlpha (*n)) && !(*m == '#' && IsDigit (*n)) && !(*m == '%' && IsNon (*n))) || q)) |
| 180 |
{ |
| 181 |
if (!wild) |
| 182 |
return 1; |
| 183 |
m = (const u_char *) ma; |
| 184 |
n = (const u_char *) ++na; |
| 185 |
} |
| 186 |
else |
| 187 |
{ |
| 188 |
if (*m) |
| 189 |
m++; |
| 190 |
if (*n) |
| 191 |
n++; |
| 192 |
} |
| 193 |
} |
| 194 |
|
| 195 |
return 1; |
| 196 |
} |
| 197 |
|
| 198 |
|
| 199 |
/* |
| 200 |
** collapse a pattern string into minimal components. |
| 201 |
** This particular version is "in place", so that it changes the pattern |
| 202 |
** which is to be reduced to a "minimal" size. |
| 203 |
*/ |
| 204 |
char * |
| 205 |
collapse (char *pattern) |
| 206 |
{ |
| 207 |
char *s = pattern, *s1, *t; |
| 208 |
|
| 209 |
if (BadPtr (pattern)) |
| 210 |
return pattern; |
| 211 |
/* |
| 212 |
* Collapse all \** into \*, \*[?]+\** into \*[?]+ |
| 213 |
*/ |
| 214 |
for (; *s; s++) |
| 215 |
if (*s == '\\') |
| 216 |
if (!*(s + 1)) |
| 217 |
break; |
| 218 |
else |
| 219 |
s++; |
| 220 |
else if (*s == '*') |
| 221 |
{ |
| 222 |
if (*(t = s1 = s + 1) == '*') |
| 223 |
while (*t == '*') |
| 224 |
t++; |
| 225 |
else if (*t == '?') |
| 226 |
for (t++, s1++; *t == '*' || *t == '?'; t++) |
| 227 |
if (*t == '?') |
| 228 |
*s1++ = *t; |
| 229 |
while ((*s1++ = *t++)) |
| 230 |
; |
| 231 |
} |
| 232 |
return pattern; |
| 233 |
} |
| 234 |
|
| 235 |
/* |
| 236 |
** Case insensitive comparison of two null terminated strings. |
| 237 |
** |
| 238 |
** returns 0, if s1 equal to s2 |
| 239 |
** <0, if s1 lexicographically less than s2 |
| 240 |
** >0, if s1 lexicographically greater than s2 |
| 241 |
*/ |
| 242 |
int |
| 243 |
irccasecmp (const char *s1, const char *s2) |
| 244 |
{ |
| 245 |
const unsigned char *str1 = (const unsigned char *) s1; |
| 246 |
const unsigned char *str2 = (const unsigned char *) s2; |
| 247 |
int res; |
| 248 |
|
| 249 |
if (!s1 || !s2) |
| 250 |
return -1; |
| 251 |
|
| 252 |
if (match_mapping == MATCH_ASCII) |
| 253 |
return strcasecmp (s1, s2); |
| 254 |
|
| 255 |
while ((res = ToUpper (*str1) - ToUpper (*str2)) == 0) |
| 256 |
{ |
| 257 |
if (*str1 == '\0') |
| 258 |
return 0; |
| 259 |
str1++; |
| 260 |
str2++; |
| 261 |
} |
| 262 |
return (res); |
| 263 |
} |
| 264 |
|
| 265 |
int |
| 266 |
ircncasecmp (const char *str1, const char *str2, int n) |
| 267 |
{ |
| 268 |
const unsigned char *s1 = (const unsigned char *) str1; |
| 269 |
const unsigned char *s2 = (const unsigned char *) str2; |
| 270 |
int res; |
| 271 |
|
| 272 |
if (match_mapping == MATCH_ASCII) |
| 273 |
return strncasecmp (str1, str2, n); |
| 274 |
|
| 275 |
while ((res = ToUpper (*s1) - ToUpper (*s2)) == 0) |
| 276 |
{ |
| 277 |
s1++; |
| 278 |
s2++; |
| 279 |
n--; |
| 280 |
if (n == 0 || (*s1 == '\0' && *s2 == '\0')) |
| 281 |
return 0; |
| 282 |
} |
| 283 |
return (res); |
| 284 |
} |
| 285 |
|
| 286 |
const unsigned int charattrs[] = { |
| 287 |
/* 0 */ 0, |
| 288 |
/* 1 */ 0, |
| 289 |
/* 2 */ 0, |
| 290 |
/* 3 */ 0, |
| 291 |
/* 4 */ 0, |
| 292 |
/* 5 */ 0, |
| 293 |
/* 6 */ 0, |
| 294 |
/* 7 BEL */ 0, |
| 295 |
/* 8 \b */ 0, |
| 296 |
/* 9 \t */ 0, |
| 297 |
/* 10 \n */ 0, |
| 298 |
/* 11 \v */ 0, |
| 299 |
/* 12 \f */ 0, |
| 300 |
/* 13 \r */ 0, |
| 301 |
/* 14 */ 0, |
| 302 |
/* 15 */ 0, |
| 303 |
/* 16 */ 0, |
| 304 |
/* 17 */ 0, |
| 305 |
/* 18 */ 0, |
| 306 |
/* 19 */ 0, |
| 307 |
/* 20 */ 0, |
| 308 |
/* 21 */ 0, |
| 309 |
/* 22 */ 0, |
| 310 |
/* 23 */ 0, |
| 311 |
/* 24 */ 0, |
| 312 |
/* 25 */ 0, |
| 313 |
/* 26 */ 0, |
| 314 |
/* 27 */ 0, |
| 315 |
/* 28 */ 0, |
| 316 |
/* 29 */ 0, |
| 317 |
/* 30 */ 0, |
| 318 |
/* 31 */ 0, |
| 319 |
/* SP */ 0, |
| 320 |
/* ! */ 0, |
| 321 |
/* " */ 0, |
| 322 |
/* # */ 0, |
| 323 |
/* $ */ 0, |
| 324 |
/* % */ 0, |
| 325 |
/* & */ 0, |
| 326 |
/* ' */ 0, |
| 327 |
/* ( */ 0, |
| 328 |
/* ) */ 0, |
| 329 |
/* * */ 0, |
| 330 |
/* + */ 0, |
| 331 |
/* , */ 0, |
| 332 |
/* - */ 0, |
| 333 |
/* . */ 0, |
| 334 |
/* / */ 0, |
| 335 |
/* 0 */ C_DIGIT, |
| 336 |
/* 1 */ C_DIGIT, |
| 337 |
/* 2 */ C_DIGIT, |
| 338 |
/* 3 */ C_DIGIT, |
| 339 |
/* 4 */ C_DIGIT, |
| 340 |
/* 5 */ C_DIGIT, |
| 341 |
/* 6 */ C_DIGIT, |
| 342 |
/* 7 */ C_DIGIT, |
| 343 |
/* 8 */ C_DIGIT, |
| 344 |
/* 9 */ C_DIGIT, |
| 345 |
/* : */ 0, |
| 346 |
/* ; */ 0, |
| 347 |
/* < */ 0, |
| 348 |
/* = */ 0, |
| 349 |
/* > */ 0, |
| 350 |
/* ? */ 0, |
| 351 |
/* @ */ 0, |
| 352 |
/* A */ C_ALPHA, |
| 353 |
/* B */ C_ALPHA, |
| 354 |
/* C */ C_ALPHA, |
| 355 |
/* D */ C_ALPHA, |
| 356 |
/* E */ C_ALPHA, |
| 357 |
/* F */ C_ALPHA, |
| 358 |
/* G */ C_ALPHA, |
| 359 |
/* H */ C_ALPHA, |
| 360 |
/* I */ C_ALPHA, |
| 361 |
/* J */ C_ALPHA, |
| 362 |
/* K */ C_ALPHA, |
| 363 |
/* L */ C_ALPHA, |
| 364 |
/* M */ C_ALPHA, |
| 365 |
/* N */ C_ALPHA, |
| 366 |
/* O */ C_ALPHA, |
| 367 |
/* P */ C_ALPHA, |
| 368 |
/* Q */ C_ALPHA, |
| 369 |
/* R */ C_ALPHA, |
| 370 |
/* S */ C_ALPHA, |
| 371 |
/* T */ C_ALPHA, |
| 372 |
/* U */ C_ALPHA, |
| 373 |
/* V */ C_ALPHA, |
| 374 |
/* W */ C_ALPHA, |
| 375 |
/* X */ C_ALPHA, |
| 376 |
/* Y */ C_ALPHA, |
| 377 |
/* Z */ C_ALPHA, |
| 378 |
/* [ */ 0, |
| 379 |
/* \ */ 0, |
| 380 |
/* ] */ 0, |
| 381 |
/* ^ */ 0, |
| 382 |
/* _ */ 0, |
| 383 |
/* ` */ 0, |
| 384 |
/* a */ C_ALPHA, |
| 385 |
/* b */ C_ALPHA, |
| 386 |
/* c */ C_ALPHA, |
| 387 |
/* d */ C_ALPHA, |
| 388 |
/* e */ C_ALPHA, |
| 389 |
/* f */ C_ALPHA, |
| 390 |
/* g */ C_ALPHA, |
| 391 |
/* h */ C_ALPHA, |
| 392 |
/* i */ C_ALPHA, |
| 393 |
/* j */ C_ALPHA, |
| 394 |
/* k */ C_ALPHA, |
| 395 |
/* l */ C_ALPHA, |
| 396 |
/* m */ C_ALPHA, |
| 397 |
/* n */ C_ALPHA, |
| 398 |
/* o */ C_ALPHA, |
| 399 |
/* p */ C_ALPHA, |
| 400 |
/* q */ C_ALPHA, |
| 401 |
/* r */ C_ALPHA, |
| 402 |
/* s */ C_ALPHA, |
| 403 |
/* t */ C_ALPHA, |
| 404 |
/* u */ C_ALPHA, |
| 405 |
/* v */ C_ALPHA, |
| 406 |
/* w */ C_ALPHA, |
| 407 |
/* x */ C_ALPHA, |
| 408 |
/* y */ C_ALPHA, |
| 409 |
/* z */ C_ALPHA, |
| 410 |
/* { */ 0, |
| 411 |
/* | */ 0, |
| 412 |
/* } */ 0, |
| 413 |
/* ~ */ 0, |
| 414 |
/* del */ 0, |
| 415 |
/* 0x80 */ 0, |
| 416 |
/* 0x81 */ 0, |
| 417 |
/* 0x82 */ 0, |
| 418 |
/* 0x83 */ 0, |
| 419 |
/* 0x84 */ 0, |
| 420 |
/* 0x85 */ 0, |
| 421 |
/* 0x86 */ 0, |
| 422 |
/* 0x87 */ 0, |
| 423 |
/* 0x88 */ 0, |
| 424 |
/* 0x89 */ 0, |
| 425 |
/* 0x8A */ 0, |
| 426 |
/* 0x8B */ 0, |
| 427 |
/* 0x8C */ 0, |
| 428 |
/* 0x8D */ 0, |
| 429 |
/* 0x8E */ 0, |
| 430 |
/* 0x8F */ 0, |
| 431 |
/* 0x90 */ 0, |
| 432 |
/* 0x91 */ 0, |
| 433 |
/* 0x92 */ 0, |
| 434 |
/* 0x93 */ 0, |
| 435 |
/* 0x94 */ 0, |
| 436 |
/* 0x95 */ 0, |
| 437 |
/* 0x96 */ 0, |
| 438 |
/* 0x97 */ 0, |
| 439 |
/* 0x98 */ 0, |
| 440 |
/* 0x99 */ 0, |
| 441 |
/* 0x9A */ 0, |
| 442 |
/* 0x9B */ 0, |
| 443 |
/* 0x9C */ 0, |
| 444 |
/* 0x9D */ 0, |
| 445 |
/* 0x9E */ 0, |
| 446 |
/* 0x9F */ 0, |
| 447 |
/* 0xA0 */ 0, |
| 448 |
/* 0xA1 */ 0, |
| 449 |
/* 0xA2 */ 0, |
| 450 |
/* 0xA3 */ 0, |
| 451 |
/* 0xA4 */ 0, |
| 452 |
/* 0xA5 */ 0, |
| 453 |
/* 0xA6 */ 0, |
| 454 |
/* 0xA7 */ 0, |
| 455 |
/* 0xA8 */ 0, |
| 456 |
/* 0xA9 */ 0, |
| 457 |
/* 0xAA */ 0, |
| 458 |
/* 0xAB */ 0, |
| 459 |
/* 0xAC */ 0, |
| 460 |
/* 0xAD */ 0, |
| 461 |
/* 0xAE */ 0, |
| 462 |
/* 0xAF */ 0, |
| 463 |
/* 0xB0 */ 0, |
| 464 |
/* 0xB1 */ 0, |
| 465 |
/* 0xB2 */ 0, |
| 466 |
/* 0xB3 */ 0, |
| 467 |
/* 0xB4 */ 0, |
| 468 |
/* 0xB5 */ 0, |
| 469 |
/* 0xB6 */ 0, |
| 470 |
/* 0xB7 */ 0, |
| 471 |
/* 0xB8 */ 0, |
| 472 |
/* 0xB9 */ 0, |
| 473 |
/* 0xBA */ 0, |
| 474 |
/* 0xBB */ 0, |
| 475 |
/* 0xBC */ 0, |
| 476 |
/* 0xBD */ 0, |
| 477 |
/* 0xBE */ 0, |
| 478 |
/* 0xBF */ 0, |
| 479 |
/* 0xC0 */ 0, |
| 480 |
/* 0xC1 */ 0, |
| 481 |
/* 0xC2 */ 0, |
| 482 |
/* 0xC3 */ 0, |
| 483 |
/* 0xC4 */ 0, |
| 484 |
/* 0xC5 */ 0, |
| 485 |
/* 0xC6 */ 0, |
| 486 |
/* 0xC7 */ 0, |
| 487 |
/* 0xC8 */ 0, |
| 488 |
/* 0xC9 */ 0, |
| 489 |
/* 0xCA */ 0, |
| 490 |
/* 0xCB */ 0, |
| 491 |
/* 0xCC */ 0, |
| 492 |
/* 0xCD */ 0, |
| 493 |
/* 0xCE */ 0, |
| 494 |
/* 0xCF */ 0, |
| 495 |
/* 0xD0 */ 0, |
| 496 |
/* 0xD1 */ 0, |
| 497 |
/* 0xD2 */ 0, |
| 498 |
/* 0xD3 */ 0, |
| 499 |
/* 0xD4 */ 0, |
| 500 |
/* 0xD5 */ 0, |
| 501 |
/* 0xD6 */ 0, |
| 502 |
/* 0xD7 */ 0, |
| 503 |
/* 0xD8 */ 0, |
| 504 |
/* 0xD9 */ 0, |
| 505 |
/* 0xDA */ 0, |
| 506 |
/* 0xDB */ 0, |
| 507 |
/* 0xDC */ 0, |
| 508 |
/* 0xDD */ 0, |
| 509 |
/* 0xDE */ 0, |
| 510 |
/* 0xDF */ 0, |
| 511 |
/* 0xE0 */ 0, |
| 512 |
/* 0xE1 */ 0, |
| 513 |
/* 0xE2 */ 0, |
| 514 |
/* 0xE3 */ 0, |
| 515 |
/* 0xE4 */ 0, |
| 516 |
/* 0xE5 */ 0, |
| 517 |
/* 0xE6 */ 0, |
| 518 |
/* 0xE7 */ 0, |
| 519 |
/* 0xE8 */ 0, |
| 520 |
/* 0xE9 */ 0, |
| 521 |
/* 0xEA */ 0, |
| 522 |
/* 0xEB */ 0, |
| 523 |
/* 0xEC */ 0, |
| 524 |
/* 0xED */ 0, |
| 525 |
/* 0xEE */ 0, |
| 526 |
/* 0xEF */ 0, |
| 527 |
/* 0xF0 */ 0, |
| 528 |
/* 0xF1 */ 0, |
| 529 |
/* 0xF2 */ 0, |
| 530 |
/* 0xF3 */ 0, |
| 531 |
/* 0xF4 */ 0, |
| 532 |
/* 0xF5 */ 0, |
| 533 |
/* 0xF6 */ 0, |
| 534 |
/* 0xF7 */ 0, |
| 535 |
/* 0xF8 */ 0, |
| 536 |
/* 0xF9 */ 0, |
| 537 |
/* 0xFA */ 0, |
| 538 |
/* 0xFB */ 0, |
| 539 |
/* 0xFC */ 0, |
| 540 |
/* 0xFD */ 0, |
| 541 |
/* 0xFE */ 0, |
| 542 |
/* 0xFF */ 0, |
| 543 |
}; |
| 544 |
|
| 545 |
/* |
| 546 |
* regex_compile() |
| 547 |
* Compile a regex of `pattern' and return it. |
| 548 |
*/ |
| 549 |
regex_t * |
| 550 |
regex_create (char *pattern, int flags) |
| 551 |
{ |
| 552 |
static char errmsg[BUFSIZE]; |
| 553 |
int errnum; |
| 554 |
regex_t *preg; |
| 555 |
|
| 556 |
if (pattern == NULL) |
| 557 |
{ |
| 558 |
return NULL; |
| 559 |
} |
| 560 |
|
| 561 |
preg = (regex_t *) malloc (sizeof (regex_t)); |
| 562 |
errnum = regcomp (preg, pattern, (flags & AREGEX_ICASE ? REG_ICASE : 0) | REG_EXTENDED); |
| 563 |
|
| 564 |
if (errnum != 0) |
| 565 |
{ |
| 566 |
regerror (errnum, preg, errmsg, BUFSIZE); |
| 567 |
slog (LG_ERROR, "regex_match(): %s\n", errmsg); |
| 568 |
regfree (preg); |
| 569 |
free (preg); |
| 570 |
return NULL; |
| 571 |
} |
| 572 |
|
| 573 |
return preg; |
| 574 |
} |
| 575 |
|
| 576 |
char * |
| 577 |
regex_extract (char *pattern, char **pend, int *pflags) |
| 578 |
{ |
| 579 |
char c, *p, *p2; |
| 580 |
bool backslash = false; |
| 581 |
|
| 582 |
c = *pattern; |
| 583 |
if (isalnum (c) || isspace (c) || c == '\\') |
| 584 |
return NULL; |
| 585 |
p = pattern + 1; |
| 586 |
while (*p != c || backslash) |
| 587 |
{ |
| 588 |
if (*p == '\0') |
| 589 |
return NULL; |
| 590 |
if (backslash || *p == '\\') |
| 591 |
backslash = !backslash; |
| 592 |
p++; |
| 593 |
} |
| 594 |
p2 = p; |
| 595 |
p++; |
| 596 |
*pflags = 0; |
| 597 |
while (*p != '\0' && *p != ' ') |
| 598 |
{ |
| 599 |
if (*p == 'i') |
| 600 |
*pflags |= AREGEX_ICASE; |
| 601 |
else if (!isalnum (*p)) |
| 602 |
return NULL; |
| 603 |
p++; |
| 604 |
} |
| 605 |
*pend = p; |
| 606 |
*p2 = '\0'; |
| 607 |
return pattern + 1; |
| 608 |
} |
| 609 |
|
| 610 |
/* |
| 611 |
* regex_match() |
| 612 |
* Internal wrapper API for POSIX-based regex matching. |
| 613 |
* `preg' is the regex to check with, `string' needs to be checked against. |
| 614 |
* Returns `true' on match, `false' else. |
| 615 |
*/ |
| 616 |
bool |
| 617 |
regex_match (regex_t * preg, char *string) |
| 618 |
{ |
| 619 |
bool retval; |
| 620 |
|
| 621 |
if (preg == NULL || string == NULL) |
| 622 |
{ |
| 623 |
slog (LG_ERROR, "regex_match(): we were given NULL string or pattern, bad!"); |
| 624 |
return false; |
| 625 |
} |
| 626 |
|
| 627 |
/* match it */ |
| 628 |
if (regexec (preg, string, 0, NULL, 0) == 0) |
| 629 |
retval = true; |
| 630 |
else |
| 631 |
retval = false; |
| 632 |
|
| 633 |
return retval; |
| 634 |
} |
| 635 |
|
| 636 |
/* |
| 637 |
* regex_destroy() |
| 638 |
* Perform cleanup with regex `preg', free associated memory. |
| 639 |
*/ |
| 640 |
bool |
| 641 |
regex_destroy (regex_t * preg) |
| 642 |
{ |
| 643 |
regfree (preg); |
| 644 |
free (preg); |
| 645 |
return true; |
| 646 |
} |
| 647 |
|
| 648 |
/* vim:cinoptions=>s,e0,n0,f0,{0,}0,^0,=s,ps,t0,c3,+s,(2s,us,)20,*30,gs,hs |
| 649 |
* vim:ts=8 |
| 650 |
* vim:sw=8 |
| 651 |
* vim:noexpandtab |
| 652 |
*/ |
