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1 | /* tools.c - miscellaneous utility functions | |
2 | * Copyright 2000-2004 srvx Development Team | |
3 | * | |
4 | * This file is part of x3. | |
5 | * | |
6 | * x3 is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 3 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with srvx; if not, write to the Free Software Foundation, | |
18 | * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. | |
19 | */ | |
20 | ||
21 | #include "helpfile.h" | |
22 | #include "log.h" | |
23 | #include "nickserv.h" | |
24 | #include "recdb.h" | |
25 | ||
26 | #ifdef HAVE_NETDB_H | |
27 | #include <netdb.h> | |
28 | #endif | |
29 | #ifdef HAVE_SYS_SOCKET_H | |
30 | #include <sys/socket.h> | |
31 | #endif | |
32 | #ifdef HAVE_ARPA_INET_H | |
33 | #include <arpa/inet.h> | |
34 | #endif | |
35 | ||
36 | #define NUMNICKLOG 6 | |
37 | #define NUMNICKBASE (1 << NUMNICKLOG) | |
38 | #define NUMNICKMASK (NUMNICKBASE - 1) | |
39 | ||
40 | /* Yes, P10's encoding here is almost-but-not-quite MIME Base64. Yay | |
41 | * for gratuitous incompatibilities. */ | |
42 | static const char convert2y[256] = { | |
43 | 'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P', | |
44 | 'Q','R','S','T','U','V','W','X','Y','Z','a','b','c','d','e','f', | |
45 | 'g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v', | |
46 | 'w','x','y','z','0','1','2','3','4','5','6','7','8','9','[',']' | |
47 | }; | |
48 | ||
49 | static const unsigned char convert2n[256] = { | |
50 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
51 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
52 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
53 | 52,53,54,55,56,57,58,59,60,61, 0, 0, 0, 0, 0, 0, | |
54 | 0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10,11,12,13,14, | |
55 | 15,16,17,18,19,20,21,22,23,24,25,62, 0,63, 0, 0, | |
56 | 0,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40, | |
57 | 41,42,43,44,45,46,47,48,49,50,51, 0, 0, 0, 0, 0 | |
58 | }; | |
59 | ||
60 | static const unsigned char ctype[256] = { | |
61 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
62 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
63 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
64 | 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 0, 0, 0, 0, 0, | |
65 | 0,10,11,12,13,14,15, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
66 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
67 | 0,10,11,12,13,14,15, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
68 | }; | |
69 | ||
70 | unsigned long int | |
71 | base64toint(const char* s, int count) | |
72 | { | |
73 | unsigned int i = 0; | |
74 | while (*s && count) { | |
75 | i = (i << NUMNICKLOG) + convert2n[(unsigned char)*s++]; | |
76 | count--; | |
77 | } | |
78 | return i; | |
79 | } | |
80 | ||
81 | const char* inttobase64(char* buf, unsigned int v, unsigned int count) | |
82 | { | |
83 | buf[count] = '\0'; | |
84 | while (count > 0) { | |
85 | buf[--count] = convert2y[(unsigned char)(v & NUMNICKMASK)]; | |
86 | v >>= NUMNICKLOG; | |
87 | } | |
88 | return buf; | |
89 | } | |
90 | ||
91 | unsigned int | |
92 | irc_ntop(char *output, unsigned int out_size, const irc_in_addr_t *addr) | |
93 | { | |
94 | static const char hexdigits[] = "0123456789abcdef"; | |
95 | unsigned int pos; | |
96 | ||
97 | assert(output); | |
98 | assert(addr); | |
99 | ||
100 | if (irc_in_addr_is_ipv4(*addr)) { | |
101 | unsigned int ip4; | |
102 | ||
103 | ip4 = (ntohs(addr->in6[6]) << 16) | ntohs(addr->in6[7]); | |
104 | pos = snprintf(output, out_size, "%u.%u.%u.%u", (ip4 >> 24), (ip4 >> 16) & 255, (ip4 >> 8) & 255, ip4 & 255); | |
105 | } else { | |
106 | unsigned int part, max_start, max_zeros, curr_zeros, ii; | |
107 | ||
108 | /* Find longest run of zeros. */ | |
109 | for (max_start = max_zeros = curr_zeros = ii = 0; ii < 8; ++ii) { | |
110 | if (!addr->in6[ii]) | |
111 | curr_zeros++; | |
112 | else if (curr_zeros > max_zeros) { | |
113 | max_start = ii - curr_zeros; | |
114 | max_zeros = curr_zeros; | |
115 | curr_zeros = 0; | |
116 | } | |
117 | } | |
118 | if (curr_zeros > max_zeros) { | |
119 | max_start = ii - curr_zeros; | |
120 | max_zeros = curr_zeros; | |
121 | } | |
122 | ||
123 | /* Print out address. */ | |
124 | #define APPEND(CH) do { if (pos < out_size) output[pos] = (CH); pos++; } while (0) | |
125 | for (pos = 0, ii = 0; ii < 8; ++ii) { | |
126 | if ((max_zeros > 0) && (ii == max_start)) { | |
127 | if (ii == 0) | |
128 | APPEND(':'); | |
129 | APPEND(':'); | |
130 | ii += max_zeros - 1; | |
131 | continue; | |
132 | } | |
133 | part = ntohs(addr->in6[ii]); | |
134 | if (part >= 0x1000) | |
135 | APPEND(hexdigits[part >> 12]); | |
136 | if (part >= 0x100) | |
137 | APPEND(hexdigits[(part >> 8) & 15]); | |
138 | if (part >= 0x10) | |
139 | APPEND(hexdigits[(part >> 4) & 15]); | |
140 | APPEND(hexdigits[part & 15]); | |
141 | if (ii < 7) | |
142 | APPEND(':'); | |
143 | } | |
144 | #undef APPEND | |
145 | output[pos < out_size ? pos : out_size - 1] = '\0'; | |
146 | } | |
147 | ||
148 | return pos; | |
149 | } | |
150 | ||
151 | unsigned int | |
152 | irc_ntop_mask(char *output, unsigned int out_size, const irc_in_addr_t *addr, unsigned char bits) | |
153 | { | |
154 | char base_addr[IRC_NTOP_MAX_SIZE]; | |
155 | int len; | |
156 | ||
157 | if (bits >= 128) | |
158 | return irc_ntop(output, out_size, addr); | |
159 | if (!irc_ntop(base_addr, sizeof(base_addr), addr)) | |
160 | return 0; | |
161 | len = snprintf(output, out_size, "%s/%d", base_addr, bits); | |
162 | if ((unsigned int)len >= out_size) | |
163 | return 0; | |
164 | return len; | |
165 | } | |
166 | ||
167 | static unsigned int | |
168 | irc_pton_ip4(const char *input, unsigned char *pbits, uint32_t *output) | |
169 | { | |
170 | unsigned int dots = 0, pos = 0, part = 0, ip = 0, bits = 32; | |
171 | ||
172 | /* Intentionally no support for bizarre IPv4 formats (plain | |
173 | * integers, octal or hex components) -- only vanilla dotted | |
174 | * decimal quads, optionally with trailing /nn. | |
175 | */ | |
176 | if (input[0] == '.') | |
177 | return 0; | |
178 | while (1) switch (input[pos]) { | |
179 | default: | |
180 | if (dots < 3) | |
181 | return 0; | |
182 | out: | |
183 | ip |= part << (24 - 8 * dots++); | |
184 | *output = htonl(ip); | |
185 | if (pbits) | |
186 | *pbits = bits; | |
187 | return pos; | |
188 | case '.': | |
189 | if (input[++pos] == '.') | |
190 | return 0; | |
191 | ip |= part << (24 - 8 * dots++); | |
192 | part = 0; | |
193 | if (input[pos] == '*') { | |
194 | while (input[++pos] == '*') ; | |
195 | if (input[pos] != '\0') | |
196 | return 0; | |
197 | if (pbits) | |
198 | *pbits = dots * 8; | |
199 | *output = htonl(ip); | |
200 | return pos; | |
201 | } | |
202 | break; | |
203 | case '/': | |
204 | if (!pbits || !isdigit(input[pos + 1])) | |
205 | return 0; | |
206 | for (bits = 0; isdigit(input[++pos]); ) | |
207 | bits = bits * 10 + input[pos] - '0'; | |
208 | if (bits > 32) | |
209 | return 0; | |
210 | goto out; | |
211 | case '0': case '1': case '2': case '3': case '4': | |
212 | case '5': case '6': case '7': case '8': case '9': | |
213 | part = part * 10 + input[pos++] - '0'; | |
214 | if (part > 255) | |
215 | return 0; | |
216 | break; | |
217 | } | |
218 | } | |
219 | ||
220 | unsigned int | |
221 | irc_pton(irc_in_addr_t *addr, unsigned char *bits, const char *input) | |
222 | { | |
223 | const char *part_start = NULL; | |
224 | char *colon; | |
225 | char *dot; | |
226 | unsigned int part = 0, pos = 0, ii = 0, cpos = 8; | |
227 | ||
228 | assert(input); | |
229 | memset(addr, 0, sizeof(*addr)); | |
230 | colon = strchr(input, ':'); | |
231 | dot = strchr(input, '.'); | |
232 | ||
233 | if (colon && (!dot || (dot > colon))) { | |
234 | /* Parse IPv6, possibly like ::127.0.0.1. | |
235 | * This is pretty straightforward; the only trick is borrowed | |
236 | * from Paul Vixie (BIND): when it sees a "::" continue as if | |
237 | * it were a single ":", but note where it happened, and fill | |
238 | * with zeros afterwards. | |
239 | */ | |
240 | if (input[pos] == ':') { | |
241 | if ((input[pos+1] != ':') || (input[pos+2] == ':')) | |
242 | return 0; | |
243 | cpos = 0; | |
244 | pos += 2; | |
245 | part_start = input + pos; | |
246 | } | |
247 | while (ii < 8) switch (input[pos]) { | |
248 | case '0': case '1': case '2': case '3': case '4': | |
249 | case '5': case '6': case '7': case '8': case '9': | |
250 | case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': | |
251 | case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': | |
252 | part = (part << 4) | (ctype[(unsigned char)input[pos++]] & 15); | |
253 | if (part > 0xffff) | |
254 | return 0; | |
255 | break; | |
256 | case ':': | |
257 | part_start = input + ++pos; | |
258 | if (input[pos] == '.') | |
259 | return 0; | |
260 | addr->in6[ii++] = htons(part); | |
261 | part = 0; | |
262 | if (input[pos] == ':') { | |
263 | if (cpos < 8) | |
264 | return 0; | |
265 | cpos = ii; | |
266 | } | |
267 | break; | |
268 | case '.': { | |
269 | uint32_t ip4; | |
270 | unsigned int len; | |
271 | len = irc_pton_ip4(part_start, bits, &ip4); | |
272 | if (!len || (ii > 6)) | |
273 | return 0; | |
274 | memcpy(addr->in6 + ii, &ip4, sizeof(ip4)); | |
275 | if (bits) | |
276 | *bits += 96; | |
277 | ii += 2; | |
278 | pos = part_start + len - input; | |
279 | goto finish; | |
280 | } | |
281 | case '/': | |
282 | if (!bits || !isdigit(input[pos + 1])) | |
283 | return 0; | |
284 | addr->in6[ii++] = htons(part); | |
285 | for (part = 0; isdigit(input[++pos]); ) | |
286 | part = part * 10 + input[pos] - '0'; | |
287 | if (part > 128) | |
288 | return 0; | |
289 | *bits = part; | |
290 | goto finish; | |
291 | case '*': | |
292 | while (input[++pos] == '*') ; | |
293 | if (input[pos] != '\0' || cpos < 8) | |
294 | return 0; | |
295 | if (bits) | |
296 | *bits = ii * 16; | |
297 | return pos; | |
298 | default: | |
299 | addr->in6[ii++] = htons(part); | |
300 | if (cpos == 8 && ii < 8) | |
301 | return 0; | |
302 | if (bits) | |
303 | *bits = 128; | |
304 | goto finish; | |
305 | } | |
306 | finish: | |
307 | /* Shift stuff after "::" up and fill middle with zeros. */ | |
308 | if (cpos < 8) { | |
309 | unsigned int jj; | |
310 | for (jj = 0; jj < ii - cpos; jj++) | |
311 | addr->in6[7 - jj] = addr->in6[ii - jj - 1]; | |
312 | for (jj = 0; jj < 8 - ii; jj++) | |
313 | addr->in6[cpos + jj] = 0; | |
314 | } | |
315 | } else if (dot) { | |
316 | uint32_t ip4; | |
317 | pos = irc_pton_ip4(input, bits, &ip4); | |
318 | if (pos) { | |
319 | addr->in6[5] = htons(65535); | |
320 | addr->in6[6] = htons(ntohl(ip4) >> 16); | |
321 | addr->in6[7] = htons(ntohl(ip4) & 65535); | |
322 | if (bits) | |
323 | *bits += 96; | |
324 | } | |
325 | } else if (input[0] == '*') { | |
326 | while (input[++pos] == '*') ; | |
327 | if (input[pos] != '\0') | |
328 | return 0; | |
329 | if (bits) | |
330 | *bits = 0; | |
331 | } | |
332 | return pos; | |
333 | } | |
334 | ||
335 | const char *irc_ntoa(const irc_in_addr_t *addr) | |
336 | { | |
337 | static char ntoa[IRC_NTOP_MAX_SIZE]; | |
338 | irc_ntop(ntoa, sizeof(ntoa), addr); | |
339 | return ntoa; | |
340 | } | |
341 | ||
342 | unsigned int | |
343 | irc_check_mask(const irc_in_addr_t *check, const irc_in_addr_t *mask, unsigned char bits) | |
344 | { | |
345 | unsigned int ii; | |
346 | ||
347 | for (ii = 0; (ii < 8) && (bits > 16); bits -= 16, ++ii) | |
348 | if (check->in6[ii] != mask->in6[ii]) | |
349 | return 0; | |
350 | if (ii < 8 && bits > 0 | |
351 | && (ntohs(check->in6[ii] ^ mask->in6[ii]) >> (16 - bits))) | |
352 | return 0; | |
353 | return 1; | |
354 | } | |
355 | ||
356 | static char irc_tolower[256]; | |
357 | #undef tolower | |
358 | #define tolower(X) irc_tolower[(unsigned char)(X)] | |
359 | ||
360 | void | |
361 | irc_strtolower(char *str) { | |
362 | char *p; | |
363 | for(p = str;*p;p++) { | |
364 | *p = tolower(*p); | |
365 | } | |
366 | } | |
367 | ||
368 | int | |
369 | irccasecmp(const char *stra, const char *strb) { | |
370 | while (*stra && (tolower(*stra) == tolower(*strb))) | |
371 | stra++, strb++; | |
372 | return tolower(*stra) - tolower(*strb); | |
373 | } | |
374 | ||
375 | int | |
376 | ircncasecmp(const char *stra, const char *strb, unsigned int len) { | |
377 | len--; | |
378 | while (*stra && (tolower(*stra) == tolower(*strb)) && len) | |
379 | stra++, strb++, len--; | |
380 | return tolower(*stra) - tolower(*strb); | |
381 | } | |
382 | ||
383 | const char * | |
384 | irccasestr(const char *haystack, const char *needle) { | |
385 | unsigned int hay_len = strlen(haystack), needle_len = strlen(needle), pos; | |
386 | if (hay_len < needle_len) | |
387 | return NULL; | |
388 | for (pos=0; pos<hay_len+1-needle_len; ++pos) { | |
389 | if ((tolower(haystack[pos]) == tolower(*needle)) | |
390 | && !ircncasecmp(haystack+pos, needle, needle_len)) | |
391 | return haystack+pos; | |
392 | } | |
393 | return NULL; | |
394 | } | |
395 | ||
396 | char * | |
397 | ircstrlower(char *str) { | |
398 | size_t ii; | |
399 | for (ii = 0; str[ii] != '\0'; ++ii) | |
400 | str[ii] = tolower(str[ii]); | |
401 | return str; | |
402 | } | |
403 | ||
404 | int | |
405 | split_line(char *line, int irc_colon, int argv_size, char *argv[]) | |
406 | { | |
407 | int argc = 0; | |
408 | int n; | |
409 | while (*line && (argc < argv_size)) { | |
410 | while (*line == ' ') | |
411 | *line++ = 0; | |
412 | if (*line == ':' && irc_colon && argc > 0) { | |
413 | /* the rest is a single parameter */ | |
414 | argv[argc++] = line + 1; | |
415 | break; | |
416 | } | |
417 | if (!*line) | |
418 | break; | |
419 | argv[argc++] = line; | |
420 | if (argc >= argv_size) | |
421 | break; | |
422 | while (*line != ' ' && *line) | |
423 | line++; | |
424 | } | |
425 | #ifdef NDEBUG | |
426 | n = 0; | |
427 | #else | |
428 | for (n=argc; n<argv_size; n++) | |
429 | argv[n] = (char*)0xFEEDBEEF; | |
430 | #endif | |
431 | return argc; | |
432 | } | |
433 | ||
434 | /* This is ircu's mmatch() function, from match.c. */ | |
435 | int mmatch(const char *old_mask, const char *new_mask) | |
436 | { | |
437 | register const char *m = old_mask; | |
438 | register const char *n = new_mask; | |
439 | const char *ma = m; | |
440 | const char *na = n; | |
441 | int wild = 0; | |
442 | int mq = 0, nq = 0; | |
443 | ||
444 | while (1) | |
445 | { | |
446 | if (*m == '*') | |
447 | { | |
448 | while (*m == '*') | |
449 | m++; | |
450 | wild = 1; | |
451 | ma = m; | |
452 | na = n; | |
453 | } | |
454 | ||
455 | if (!*m) | |
456 | { | |
457 | if (!*n) | |
458 | return 0; | |
459 | for (m--; (m > old_mask) && (*m == '?'); m--) | |
460 | ; | |
461 | if ((*m == '*') && (m > old_mask) && (m[-1] != '\\')) | |
462 | return 0; | |
463 | if (!wild) | |
464 | return 1; | |
465 | m = ma; | |
466 | ||
467 | /* Added to `mmatch' : Because '\?' and '\*' now is one character: */ | |
468 | if ((*na == '\\') && ((na[1] == '*') || (na[1] == '?'))) | |
469 | ++na; | |
470 | ||
471 | n = ++na; | |
472 | } | |
473 | else if (!*n) | |
474 | { | |
475 | while (*m == '*') | |
476 | m++; | |
477 | return (*m != 0); | |
478 | } | |
479 | if ((*m == '\\') && ((m[1] == '*') || (m[1] == '?'))) | |
480 | { | |
481 | m++; | |
482 | mq = 1; | |
483 | } | |
484 | else | |
485 | mq = 0; | |
486 | ||
487 | /* Added to `mmatch' : Because '\?' and '\*' now is one character: */ | |
488 | if ((*n == '\\') && ((n[1] == '*') || (n[1] == '?'))) | |
489 | { | |
490 | n++; | |
491 | nq = 1; | |
492 | } | |
493 | else | |
494 | nq = 0; | |
495 | ||
496 | /* | |
497 | * This `if' has been changed compared to match() to do the following: | |
498 | * Match when: | |
499 | * old (m) new (n) boolean expression | |
500 | * * any (*m == '*' && !mq) || | |
501 | * ? any except '*' (*m == '?' && !mq && (*n != '*' || nq)) || | |
502 | * any except * or ? same as m (!((*m == '*' || *m == '?') && !mq) && | |
503 | * toLower(*m) == toLower(*n) && | |
504 | * !((mq && !nq) || (!mq && nq))) | |
505 | * | |
506 | * Here `any' also includes \* and \? ! | |
507 | * | |
508 | * After reworking the boolean expressions, we get: | |
509 | * (Optimized to use boolean shortcircuits, with most frequently occuring | |
510 | * cases upfront (which took 2 hours!)). | |
511 | */ | |
512 | if ((*m == '*' && !mq) || | |
513 | ((!mq || nq) && tolower(*m) == tolower(*n)) || | |
514 | (*m == '?' && !mq && (*n != '*' || nq))) | |
515 | { | |
516 | if (*m) | |
517 | m++; | |
518 | if (*n) | |
519 | n++; | |
520 | } | |
521 | else | |
522 | { | |
523 | if (!wild) | |
524 | return 1; | |
525 | m = ma; | |
526 | ||
527 | /* Added to `mmatch' : Because '\?' and '\*' now is one character: */ | |
528 | if ((*na == '\\') && ((na[1] == '*') || (na[1] == '?'))) | |
529 | ++na; | |
530 | ||
531 | n = ++na; | |
532 | } | |
533 | } | |
534 | } | |
535 | ||
536 | int | |
537 | match_ircglob(const char *text, const char *glob) | |
538 | { | |
539 | const char *m = glob, *n = text; | |
540 | const char *m_tmp = glob, *n_tmp = text; | |
541 | int star_p; | |
542 | ||
543 | for (;;) switch (*m) { | |
544 | case '\0': | |
545 | if (!*n) | |
546 | return 1; | |
547 | backtrack: | |
548 | if (m_tmp == glob) | |
549 | return 0; | |
550 | m = m_tmp; | |
551 | n = ++n_tmp; | |
552 | if (!*n) | |
553 | return 0; | |
554 | break; | |
555 | case '\\': | |
556 | m++; | |
557 | /* allow escaping to force capitalization */ | |
558 | if (*m++ != *n++) | |
559 | goto backtrack; | |
560 | break; | |
561 | case '*': case '?': | |
562 | for (star_p = 0; ; m++) { | |
563 | if (*m == '*') | |
564 | star_p = 1; | |
565 | else if (*m == '?') { | |
566 | if (!*n++) | |
567 | goto backtrack; | |
568 | } else break; | |
569 | } | |
570 | if (star_p) { | |
571 | if (!*m) | |
572 | return 1; | |
573 | else if (*m == '\\') { | |
574 | m_tmp = ++m; | |
575 | if (!*m) | |
576 | return 0; | |
577 | for (n_tmp = n; *n && *n != *m; n++) ; | |
578 | } else { | |
579 | m_tmp = m; | |
580 | for (n_tmp = n; *n && tolower(*n) != tolower(*m); n++) ; | |
581 | } | |
582 | } | |
583 | /* and fall through */ | |
584 | default: | |
585 | if (!*n) | |
586 | return *m == '\0'; | |
587 | if (tolower(*m) != tolower(*n)) | |
588 | goto backtrack; | |
589 | m++; | |
590 | n++; | |
591 | break; | |
592 | } | |
593 | } | |
594 | ||
595 | extern const char *hidden_host_suffix; | |
596 | ||
597 | /* Prevent *@* *@** *@*a* type masks, while allowing anything else. This is the best way iv found to detect | |
598 | * a global matching mask; if it matches this string, it'll match almost anything :) */ | |
599 | int is_overmask(char *mask) | |
600 | { | |
601 | return(match_ircglob("abcdefghijklmnopqrstuv!frcmbghilnrtoasde@apdic.yfa.dsfsdaffsdasfdasfd.abcdefghijklmnopqrstuvwxyz.asdfasfdfsdsfdasfda.ydfbe", mask)); | |
602 | } | |
603 | ||
604 | int | |
605 | user_matches_glob(struct userNode *user, const char *orig_glob, int flags, int shared) | |
606 | { | |
607 | char *tmpglob, *glob, *marker; | |
608 | char exttype = 0; | |
609 | int extreverse = 0, is_extended = 0, match = 0, banned = 0; | |
610 | unsigned int count, n; | |
611 | struct modeNode *mn; | |
612 | struct chanNode *channel; | |
613 | struct banNode *ban; | |
614 | ||
615 | /* Make a writable copy of the glob */ | |
616 | glob = alloca(strlen(orig_glob)+1); | |
617 | strcpy(glob, orig_glob); | |
618 | ||
619 | /* Extended bans */ | |
620 | tmpglob = alloca(strlen(orig_glob)+1); | |
621 | tmpglob = strdup(orig_glob); | |
622 | ||
623 | if (*tmpglob == '~') { | |
624 | tmpglob++; /* get rid of the ~ */ | |
625 | ||
626 | if (*tmpglob == '!') { | |
627 | extreverse = 1; | |
628 | tmpglob++; /* get rid of the ! */ | |
629 | } | |
630 | ||
631 | exttype = *tmpglob; | |
632 | tmpglob++; /* get rid of the type */ | |
633 | ||
634 | if (*tmpglob == ':') { | |
635 | is_extended = 1; | |
636 | tmpglob++; /* get rid of the : */ | |
637 | glob = strdup(tmpglob); | |
638 | } | |
639 | } | |
640 | ||
641 | if (is_extended) { | |
642 | log_module(MAIN_LOG, LOG_DEBUG, "Extended ban. T (%c) R (%d) M (%s)", exttype, extreverse, glob); | |
643 | switch (exttype) { | |
644 | case 'a': | |
645 | if (user->handle_info) { | |
646 | if (extreverse) { | |
647 | if (0 != strcasecmp(glob, user->handle_info->handle)) | |
648 | return 1; | |
649 | } else { | |
650 | if (0 == strcasecmp(glob, user->handle_info->handle)) | |
651 | return 1; | |
652 | } | |
653 | } else { | |
654 | if (extreverse) | |
655 | return 1; | |
656 | } | |
657 | return match_ircglob(user->hostname, glob); | |
658 | case 'c': | |
659 | if (!strstr(glob, "#")) | |
660 | return -1; | |
661 | ||
662 | if (extreverse) { | |
663 | for (n=count=0; n<user->channels.used; n++) { | |
664 | mn = user->channels.list[n]; | |
665 | match = 0; | |
666 | ||
667 | if (*glob == '#') { | |
668 | if (0 == strcasecmp(glob, mn->channel->name)) | |
669 | match = 1; | |
670 | } else { | |
671 | if (0 == strcasecmp(glob+1, mn->channel->name)) { | |
672 | if ((*glob == '@') && (mn->modes & MODE_CHANOP)) | |
673 | match = 1; | |
674 | else if ((*glob == '%') && (mn->modes & MODE_HALFOP)) | |
675 | match = 1; | |
676 | else if ((*glob == '+') && (mn->modes & MODE_VOICE)) | |
677 | match = 1; | |
678 | } | |
679 | } | |
680 | ||
681 | if (match == 0) | |
682 | banned = 1; | |
683 | else { | |
684 | banned = 0; | |
685 | break; | |
686 | } | |
687 | } | |
688 | } else { | |
689 | for (n=count=0; n<user->channels.used; n++) { | |
690 | mn = user->channels.list[n]; | |
691 | match = 0; | |
692 | ||
693 | if (*glob == '#') { | |
694 | if (0 == strcasecmp(glob, mn->channel->name)) | |
695 | match = 1; | |
696 | } else { | |
697 | if (0 == strcasecmp(glob+1, mn->channel->name)) { | |
698 | if ((*glob == '@') && (mn->modes & MODE_CHANOP)) | |
699 | match = 1; | |
700 | else if ((*glob == '%') && (mn->modes & MODE_HALFOP)) | |
701 | match = 1; | |
702 | else if ((*glob == '+') && (mn->modes & MODE_VOICE)) | |
703 | match = 1; | |
704 | } | |
705 | } | |
706 | ||
707 | if (match == 1) | |
708 | banned = 1; | |
709 | } | |
710 | } | |
711 | ||
712 | if (banned) | |
713 | return 1; | |
714 | else | |
715 | return match_ircglob(user->hostname, glob); | |
716 | case 'j': | |
717 | if (shared == 0) { | |
718 | if (*glob != '#') | |
719 | return -1; | |
720 | if ((channel = GetChannel(glob))) { | |
721 | for (n = 0; n < channel->banlist.used; n++) { | |
722 | ban = channel->banlist.list[n]; | |
723 | if (user_matches_glob(user, ban->ban, flags, 1)) | |
724 | return 1; | |
725 | } | |
726 | } | |
727 | } | |
728 | return match_ircglob(user->hostname, glob); | |
729 | case 'n': /* this is handled ircd side */ | |
730 | return match_ircglob(user->hostname, glob); | |
731 | case 'q': /* this is handled ircd side */ | |
732 | return match_ircglob(user->hostname, glob); | |
733 | case 't': /* this is handled ircd side */ | |
734 | return match_ircglob(user->hostname, glob); | |
735 | case 'R': /* this is handled ircd side */ | |
736 | return match_ircglob(user->hostname, glob); | |
737 | default: | |
738 | return -1; | |
739 | } | |
740 | } | |
741 | ||
742 | /* Check the nick, if it's present */ | |
743 | if (flags & MATCH_USENICK) { | |
744 | if (!(marker = strchr(glob, '!'))) { | |
745 | log_module(MAIN_LOG, LOG_ERROR, "user_matches_glob(\"%s\", \"%s\", %d) called, and glob doesn't include a '!'", user->nick, orig_glob, flags); | |
746 | return 0; | |
747 | } | |
748 | *marker = 0; | |
749 | if (!match_ircglob(user->nick, glob)) return 0; | |
750 | glob = marker + 1; | |
751 | } | |
752 | /* Check the ident */ | |
753 | if (!(marker = strchr(glob, '@'))) { | |
754 | log_module(MAIN_LOG, LOG_ERROR, "user_matches_glob(\"%s\", \"%s\", %d) called, and glob doesn't include an '@'", user->nick, orig_glob, flags); | |
755 | return 0; | |
756 | } | |
757 | *marker = 0; | |
758 | if (!match_ircglob(user->ident, glob)) | |
759 | return 0; | |
760 | glob = marker + 1; | |
761 | /* Check for a fakehost match. */ | |
762 | if (IsFakeHost(user) && match_ircglob(user->fakehost, glob)) | |
763 | return 1; | |
764 | ||
765 | /* Check for a sethost (S:lines) */ | |
766 | if (IsSetHost(user) && match_ircglob(user->sethost, glob)) | |
767 | return 1; | |
768 | ||
769 | /* Check for an account match. */ | |
770 | if (hidden_host_suffix && user->handle_info) { | |
771 | char hidden_host[HOSTLEN+1]; | |
772 | snprintf(hidden_host, sizeof(hidden_host), "%s.%s", user->handle_info->handle, hidden_host_suffix); | |
773 | if (match_ircglob(hidden_host, glob)) | |
774 | return 1; | |
775 | } | |
776 | ||
777 | /* Match crypt hostname */ | |
778 | if (match_ircglob(user->crypthost, glob)) | |
779 | return 1; | |
780 | ||
781 | /* Match crypt IP */ | |
782 | if (match_ircglob(user->cryptip, glob)) | |
783 | return 1; | |
784 | ||
785 | /* If only matching the visible hostnames, bail early. */ | |
786 | if ((flags & MATCH_VISIBLE) && IsHiddenHost(user) | |
787 | && (IsFakeHost(user) || (hidden_host_suffix && user->handle_info))) | |
788 | return 0; | |
789 | /* If it might be an IP glob, test that. */ | |
790 | if (!glob[strspn(glob, "0123456789./*?")] | |
791 | && match_ircglob(irc_ntoa(&user->ip), glob)) | |
792 | return 1; | |
793 | /* None of the above; could only be a hostname match. */ | |
794 | return match_ircglob(user->hostname, glob); | |
795 | } | |
796 | ||
797 | int | |
798 | is_ircmask(const char *text) | |
799 | { | |
800 | char *tmptext; | |
801 | ||
802 | if (*text == '~') { | |
803 | tmptext = alloca(strlen(text)+1); | |
804 | tmptext = strdup(text); | |
805 | ||
806 | tmptext++; /* get rid of the ~ */ | |
807 | ||
808 | if (*tmptext == '!') | |
809 | tmptext++; /* get rid of the ! if it exists */ | |
810 | ||
811 | tmptext++; /* get rid of the ext ban type */ | |
812 | ||
813 | if (*tmptext == ':') { | |
814 | tmptext++; /* get rid of the : */ | |
815 | while (*tmptext && !isspace((char)*tmptext)) | |
816 | tmptext++; /* get rid of the rest */ | |
817 | return !*tmptext; | |
818 | } | |
819 | } | |
820 | ||
821 | while (*text && (isalnum((char)*text) || strchr("-_[]|\\`^{}?*", *text))) | |
822 | text++; | |
823 | if (*text++ != '!') | |
824 | return 0; | |
825 | while (*text && *text != '@' && !isspace((char)*text)) | |
826 | text++; | |
827 | if (*text++ != '@') | |
828 | return 0; | |
829 | while (*text && !isspace((char)*text)) | |
830 | text++; | |
831 | return !*text; | |
832 | } | |
833 | ||
834 | int | |
835 | is_gline(const char *text) | |
836 | { | |
837 | if (*text == '@') | |
838 | return 0; | |
839 | text += strcspn(text, "@!% \t\r\n"); | |
840 | if (*text++ != '@') | |
841 | return 0; | |
842 | if (!*text) | |
843 | return 0; | |
844 | while (*text && (isalnum((char)*text) || strchr(".-?*:", *text))) | |
845 | text++; | |
846 | return !*text; | |
847 | } | |
848 | ||
849 | int | |
850 | is_shun(const char *text) | |
851 | { | |
852 | if (*text == '@') | |
853 | return 0; | |
854 | text += strcspn(text, "@!% \t\r\n"); | |
855 | if (*text++ != '@') | |
856 | return 0; | |
857 | if (!*text) | |
858 | return 0; | |
859 | while (*text && (isalnum((char)*text) || strchr(".-?*:", *text))) | |
860 | text++; | |
861 | return !*text; | |
862 | } | |
863 | ||
864 | int | |
865 | split_ircmask(char *text, char **nick, char **ident, char **host) | |
866 | { | |
867 | char *start; | |
868 | ||
869 | start = text; | |
870 | while (isalnum((char)*text) || strchr("=[]\\`^{}?*", *text)) | |
871 | text++; | |
872 | if (*text != '!' || ((text - start) > NICKLEN)) | |
873 | return 0; | |
874 | *text = 0; | |
875 | if (nick) | |
876 | *nick = start; | |
877 | ||
878 | start = ++text; | |
879 | while (*text && *text != '@' && !isspace((char)*text)) | |
880 | text++; | |
881 | if (*text != '@' || ((text - start) > USERLEN)) | |
882 | return 0; | |
883 | *text = 0; | |
884 | if (ident) | |
885 | *ident = start; | |
886 | ||
887 | start = ++text; | |
888 | while (*text && (isalnum((char)*text) || strchr(".-?*:", *text))) | |
889 | text++; | |
890 | if (host) | |
891 | *host = start; | |
892 | return !*text && ((text - start) <= HOSTLEN) && nick && ident && host; | |
893 | } | |
894 | ||
895 | char * | |
896 | sanitize_ircmask(char *input) | |
897 | { | |
898 | unsigned int length, flag; | |
899 | char *mask, *start, *output; | |
900 | ||
901 | /* Sanitize everything in place; input *must* be a valid | |
902 | hostmask. */ | |
903 | output = input; | |
904 | flag = 0; | |
905 | ||
906 | /* The nick is truncated at the end. */ | |
907 | length = 0; | |
908 | mask = input; | |
909 | while(*input++ != '!') | |
910 | { | |
911 | length++; | |
912 | } | |
913 | if(length > NICKLEN) | |
914 | { | |
915 | mask += NICKLEN; | |
916 | *mask++ = '!'; | |
917 | ||
918 | /* This flag is used to indicate following parts should | |
919 | be shifted. */ | |
920 | flag = 1; | |
921 | } | |
922 | else | |
923 | { | |
924 | mask = input; | |
925 | } | |
926 | ||
927 | /* The ident and host must be truncated at the beginning and | |
928 | replaced with a '*' to be compatible with ircu. */ | |
929 | length = 0; | |
930 | start = input; | |
931 | while(*input++ != '@') | |
932 | { | |
933 | length++; | |
934 | } | |
935 | if(length > USERLEN || flag) | |
936 | { | |
937 | if(length > USERLEN) | |
938 | { | |
939 | start = input - USERLEN; | |
940 | *mask++ = '*'; | |
941 | } | |
942 | while(*start != '@') | |
943 | { | |
944 | *mask++ = *start++; | |
945 | } | |
946 | *mask++ = '@'; | |
947 | ||
948 | flag = 1; | |
949 | } | |
950 | else | |
951 | { | |
952 | mask = input; | |
953 | } | |
954 | ||
955 | length = 0; | |
956 | start = input; | |
957 | while(*input++) | |
958 | { | |
959 | length++; | |
960 | } | |
961 | if(length > HOSTLEN || flag) | |
962 | { | |
963 | if(length > HOSTLEN) | |
964 | { | |
965 | start = input - HOSTLEN; | |
966 | *mask++ = '*'; | |
967 | } | |
968 | while(*start) | |
969 | { | |
970 | *mask++ = *start++; | |
971 | } | |
972 | *mask = '\0'; | |
973 | } | |
974 | ||
975 | return output; | |
976 | } | |
977 | ||
978 | static long | |
979 | TypeLength(char type) | |
980 | { | |
981 | switch (type) { | |
982 | case 'y': return 365*24*60*60; | |
983 | case 'M': return 30*24*60*60; | |
984 | case 'w': return 7*24*60*60; | |
985 | case 'd': return 24*60*60; | |
986 | case 'h': return 60*60; | |
987 | case 'm': return 60; | |
988 | case 's': return 1; | |
989 | default: return 0; | |
990 | } | |
991 | } | |
992 | ||
993 | /* This function is not entirely accurate as it does not take into account leap units | |
994 | * or varying months. TODO: use proper dateadd functions to calculate real seconds | |
995 | * from now for the units (eg 1M should be give us seconds till todays date next month) | |
996 | */ | |
997 | unsigned long | |
998 | ParseInterval(const char *interval) | |
999 | { | |
1000 | unsigned long seconds = 0; | |
1001 | int partial = 0; | |
1002 | char c; | |
1003 | ||
1004 | /* process the string, resetting the count if we find a unit character */ | |
1005 | while ((c = *interval++)) { | |
1006 | if (isdigit((int)c)) { | |
1007 | partial = partial*10 + c - '0'; | |
1008 | } else if (strchr("yMwdhms", c)) { | |
1009 | seconds += TypeLength(c) * partial; | |
1010 | partial = 0; | |
1011 | } else { | |
1012 | return 0; | |
1013 | } | |
1014 | } | |
1015 | /* assume the last chunk is seconds (the normal case) */ | |
1016 | return seconds + partial; | |
1017 | } | |
1018 | ||
1019 | static long | |
1020 | GetSizeMultiplier(char type) | |
1021 | { | |
1022 | switch (type) { | |
1023 | case 'G': case 'g': return 1024*1024*1024; | |
1024 | case 'M': case 'm': return 1024*1024; | |
1025 | case 'K': case 'k': return 1024; | |
1026 | case 'B': case 'b': return 1; | |
1027 | default: return 0; | |
1028 | } | |
1029 | } | |
1030 | ||
1031 | unsigned long | |
1032 | ParseVolume(const char *volume) | |
1033 | { | |
1034 | unsigned long accum = 0, partial = 0; | |
1035 | char c; | |
1036 | while ((c = *volume++)) { | |
1037 | if (isdigit((int)c)) { | |
1038 | partial = partial*10 + c - '0'; | |
1039 | } else { | |
1040 | accum += GetSizeMultiplier(c) * partial; | |
1041 | partial = 0; | |
1042 | } | |
1043 | } | |
1044 | return accum + partial; | |
1045 | } | |
1046 | ||
1047 | char * | |
1048 | unsplit_string(char *set[], unsigned int max, char *dest) | |
1049 | { | |
1050 | static char unsplit_buffer[MAXLEN*2]; | |
1051 | unsigned int ii, jj, pos; | |
1052 | ||
1053 | if (!dest) | |
1054 | dest = unsplit_buffer; | |
1055 | for (ii=pos=0; ii<max; ii++) { | |
1056 | for (jj=0; set[ii][jj]; jj++) | |
1057 | dest[pos++] = set[ii][jj]; | |
1058 | dest[pos++] = ' '; | |
1059 | } | |
1060 | dest[--pos] = 0; | |
1061 | return dest; | |
1062 | } | |
1063 | ||
1064 | char * | |
1065 | intervalString(char *output, time_t interval, struct handle_info *hi) | |
1066 | { | |
1067 | static const struct { | |
1068 | const char *msg_single; | |
1069 | const char *msg_plural; | |
1070 | long length; | |
1071 | } unit[] = { | |
1072 | { "MSG_YEAR", "MSG_YEARS", 365 * 24 * 60 * 60 }, | |
1073 | { "MSG_WEEK", "MSG_WEEKS", 7 * 24 * 60 * 60 }, | |
1074 | { "MSG_DAY", "MSG_DAYS", 24 * 60 * 60 }, | |
1075 | { "MSG_HOUR", "MSG_HOURS", 60 * 60 }, | |
1076 | { "MSG_MINUTE", "MSG_MINUTES", 60 }, | |
1077 | { "MSG_SECOND", "MSG_SECONDS", 1 } | |
1078 | }; | |
1079 | struct language *lang; | |
1080 | const char *msg; | |
1081 | unsigned int type, words, pos, count; | |
1082 | ||
1083 | lang = hi ? hi->language : lang_C; | |
1084 | if(!interval) | |
1085 | { | |
1086 | msg = language_find_message(lang, "MSG_0_SECONDS"); | |
1087 | return strcpy(output, msg); | |
1088 | } | |
1089 | ||
1090 | for (type = 0, words = pos = 0; | |
1091 | interval && (words < 2) && (type < ArrayLength(unit)); | |
1092 | type++) { | |
1093 | if (interval < unit[type].length) | |
1094 | continue; | |
1095 | count = interval / unit[type].length; | |
1096 | interval = interval % unit[type].length; | |
1097 | ||
1098 | if (words++ == 1) { | |
1099 | msg = language_find_message(lang, "MSG_AND"); | |
1100 | pos += sprintf(output + pos, "%s ", msg); | |
1101 | } | |
1102 | if (count == 1) | |
1103 | msg = language_find_message(lang, unit[type].msg_single); | |
1104 | else | |
1105 | msg = language_find_message(lang, unit[type].msg_plural); | |
1106 | pos += sprintf(output + pos, "%d%s", count, msg); | |
1107 | } | |
1108 | ||
1109 | output[pos] = 0; | |
1110 | return output; | |
1111 | } | |
1112 | ||
1113 | int | |
1114 | getipbyname(const char *name, unsigned long *ip) | |
1115 | { | |
1116 | struct hostent *he = gethostbyname(name); | |
1117 | if (!he) | |
1118 | return 0; | |
1119 | if (he->h_addrtype != AF_INET) | |
1120 | return 0; | |
1121 | memcpy(ip, he->h_addr_list[0], sizeof(*ip)); | |
1122 | return 1; | |
1123 | } | |
1124 | ||
1125 | DEFINE_LIST(string_buffer, char) | |
1126 | ||
1127 | void | |
1128 | string_buffer_append_substring(struct string_buffer *buf, const char *tail, unsigned int len) | |
1129 | { | |
1130 | while (buf->used + len >= buf->size) { | |
1131 | if (!buf->size) | |
1132 | buf->size = 16; | |
1133 | else | |
1134 | buf->size <<= 1; | |
1135 | buf->list = realloc(buf->list, buf->size*sizeof(buf->list[0])); | |
1136 | } | |
1137 | memcpy(buf->list + buf->used, tail, len+1); | |
1138 | buf->used += len; | |
1139 | } | |
1140 | ||
1141 | void | |
1142 | string_buffer_append_string(struct string_buffer *buf, const char *tail) | |
1143 | { | |
1144 | string_buffer_append_substring(buf, tail, strlen(tail)); | |
1145 | } | |
1146 | ||
1147 | void | |
1148 | string_buffer_append_vprintf(struct string_buffer *buf, const char *fmt, va_list args) | |
1149 | { | |
1150 | va_list working; | |
1151 | unsigned int len; | |
1152 | int ret; | |
1153 | ||
1154 | VA_COPY(working, args); | |
1155 | len = strlen(fmt); | |
1156 | if (!buf->list || ((buf->used + buf->size) < len)) { | |
1157 | buf->size = buf->used + len; | |
1158 | buf->list = realloc(buf->list, buf->size); | |
1159 | } | |
1160 | ret = vsnprintf(buf->list + buf->used, buf->size - buf->used, fmt, working); | |
1161 | if (ret <= 0) { | |
1162 | /* pre-C99 behavior; double buffer size until it is big enough */ | |
1163 | va_end(working); | |
1164 | VA_COPY(working, args); | |
1165 | while ((ret = vsnprintf(buf->list + buf->used, buf->size - buf->used, fmt, working)) <= 0) { | |
1166 | buf->size += len; | |
1167 | buf->list = realloc(buf->list, buf->size); | |
1168 | va_end(working); | |
1169 | VA_COPY(working, args); | |
1170 | } | |
1171 | buf->used += ret; | |
1172 | } else if (buf->used + ret < buf->size) { | |
1173 | /* no need to increase allocation size */ | |
1174 | buf->used += ret; | |
1175 | } else { | |
1176 | /* now we know exactly how much space we need */ | |
1177 | if (buf->size <= buf->used + ret) { | |
1178 | buf->size = buf->used + ret + 1; | |
1179 | buf->list = realloc(buf->list, buf->size); | |
1180 | } | |
1181 | va_end(working); | |
1182 | VA_COPY(working, args); | |
1183 | buf->used += vsnprintf(buf->list + buf->used, buf->size, fmt, working); | |
1184 | } | |
1185 | va_end(working); | |
1186 | va_end(args); | |
1187 | } | |
1188 | ||
1189 | void string_buffer_append_printf(struct string_buffer *buf, const char *fmt, ...) | |
1190 | { | |
1191 | va_list args; | |
1192 | va_start(args, fmt); | |
1193 | string_buffer_append_vprintf(buf, fmt, args); | |
1194 | } | |
1195 | ||
1196 | void | |
1197 | string_buffer_replace(struct string_buffer *buf, unsigned int from, unsigned int len, const char *repl) | |
1198 | { | |
1199 | unsigned int repl_len = strlen(repl); | |
1200 | if (from > buf->used) | |
1201 | return; | |
1202 | if (len + from > buf->used) | |
1203 | len = buf->used - from; | |
1204 | buf->used = buf->used + repl_len - len; | |
1205 | if (buf->size <= buf->used) { | |
1206 | while (buf->used >= buf->size) | |
1207 | buf->size <<= 1; | |
1208 | buf->list = realloc(buf->list, buf->size*sizeof(buf->list[0])); | |
1209 | } | |
1210 | memmove(buf->list+from+repl_len, buf->list+from+len, strlen(buf->list+from+len)); | |
1211 | strcpy(buf->list+from, repl); | |
1212 | } | |
1213 | ||
1214 | struct string_list str_tab; | |
1215 | ||
1216 | const char * | |
1217 | strtab(unsigned int ii) { | |
1218 | if (ii > 65536) | |
1219 | return NULL; | |
1220 | if (ii > str_tab.size) { | |
1221 | unsigned int old_size = str_tab.size; | |
1222 | while (ii >= str_tab.size) | |
1223 | str_tab.size <<= 1; | |
1224 | str_tab.list = realloc(str_tab.list, str_tab.size*sizeof(str_tab.list[0])); | |
1225 | memset(str_tab.list+old_size, 0, (str_tab.size-old_size)*sizeof(str_tab.list[0])); | |
1226 | } | |
1227 | if (!str_tab.list[ii]) { | |
1228 | str_tab.list[ii] = malloc(12); | |
1229 | sprintf(str_tab.list[ii], "%u", ii); | |
1230 | } | |
1231 | return str_tab.list[ii]; | |
1232 | } | |
1233 | ||
1234 | void | |
1235 | tools_init(void) | |
1236 | { | |
1237 | unsigned int upr, lwr; | |
1238 | for (lwr=0; lwr<256; ++lwr) | |
1239 | tolower(lwr) = lwr; | |
1240 | for (upr='A', lwr='a'; lwr <= 'z'; ++upr, ++lwr) | |
1241 | tolower(upr) = lwr; | |
1242 | #ifdef WITH_PROTOCOL_P10 | |
1243 | for (upr='[', lwr='{'; lwr <= '~'; ++upr, ++lwr) | |
1244 | tolower(upr) = lwr; | |
1245 | for (upr=0xc0, lwr=0xe0; lwr <= 0xf6; ++upr, ++lwr) | |
1246 | tolower(upr) = lwr; | |
1247 | for (upr=0xd8, lwr=0xf8; lwr <= 0xfe; ++upr, ++lwr) | |
1248 | tolower(upr) = lwr; | |
1249 | #endif | |
1250 | str_tab.size = 1001; | |
1251 | str_tab.list = calloc(str_tab.size, sizeof(str_tab.list[0])); | |
1252 | } | |
1253 | ||
1254 | void | |
1255 | tools_cleanup(void) | |
1256 | { | |
1257 | unsigned int ii; | |
1258 | for (ii=0; ii<str_tab.size; ++ii) | |
1259 | free(str_tab.list[ii]); | |
1260 | free(str_tab.list); | |
1261 | } | |
1262 | ||
1263 | /* mysep() is my answer to the strtok/strsep | |
1264 | * issue. strsep is nice but doesn't skip | |
1265 | * multiple dilimiters, which can really | |
1266 | * offset tokens and cause huge corruption | |
1267 | * so this function will use strsep but | |
1268 | * act like strtok in that sense. | |
1269 | */ | |
1270 | char *mysep(char **sepstr, char *delim) | |
1271 | { | |
1272 | static char *retstr; | |
1273 | ||
1274 | if(!*sepstr || !**sepstr) | |
1275 | return(NULL); | |
1276 | ||
1277 | do | |
1278 | { | |
1279 | retstr = strsep(sepstr, delim); | |
1280 | }while (retstr && !(*retstr)); | |
1281 | ||
1282 | return(retstr); | |
1283 | } | |
1284 | ||
1285 | /* Mallocing snprintf * | |
1286 | * | |
1287 | * If it overruns size, it will simply be safely truncated. | |
1288 | */ | |
1289 | char * | |
1290 | x3_msnprintf(const int size, const char *format, ...) | |
1291 | { | |
1292 | va_list ap; | |
1293 | char* buff = calloc(sizeof(char *), size+1); | |
1294 | ||
1295 | va_start(ap, format); | |
1296 | vsnprintf(buff, size, format, ap); | |
1297 | va_end(ap); | |
1298 | buff = realloc(buff, strlen(buff) + 1); | |
1299 | return buff; | |
1300 | } | |
1301 | ||
1302 | char *time2str(time_t thetime) | |
1303 | { | |
1304 | char *buf, *tmp; | |
1305 | ||
1306 | buf = ctime(&thetime); | |
1307 | tmp = (char *)strchr(buf, '\n'); | |
1308 | *tmp = '\0'; | |
1309 | return(buf); | |
1310 | } | |
1311 | ||
1312 | char* x3_strtok(char **save, char *str, char *fs) | |
1313 | { | |
1314 | char *pos = *save; /* keep last position across calls */ | |
1315 | char *tmp; | |
1316 | ||
1317 | if (str) | |
1318 | pos = str; /* new string scan */ | |
1319 | ||
1320 | while (pos && *pos && strchr(fs, *pos) != NULL) | |
1321 | pos++; /* skip leading separators */ | |
1322 | ||
1323 | if (!pos || !*pos) | |
1324 | return (pos = *save = NULL); /* string contains only sep's */ | |
1325 | ||
1326 | tmp = pos; /* now, keep position of the token */ | |
1327 | ||
1328 | while (*pos && strchr(fs, *pos) == NULL) | |
1329 | pos++; /* skip content of the token */ | |
1330 | ||
1331 | if (*pos) | |
1332 | *pos++ = '\0'; /* remove first sep after the token */ | |
1333 | else | |
1334 | pos = NULL; /* end of string */ | |
1335 | ||
1336 | *save = pos; | |
1337 | return (tmp); | |
1338 | } | |
1339 | ||
1340 | int valid_email(const char *email) | |
1341 | { | |
1342 | unsigned int i; | |
1343 | for (i=0;i<strlen(email);i++) | |
1344 | { | |
1345 | if(!isalnum(email[i]) && | |
1346 | email[i] != '.' && | |
1347 | email[i] != '@' && | |
1348 | email[i] != '-' && | |
1349 | email[i] != '+' && | |
1350 | email[i] != '_' ) | |
1351 | return false; | |
1352 | } | |
1353 | if(strchr(email, '@') == NULL) | |
1354 | return false; | |
1355 | return true; | |
1356 | } | |
1357 | ||
1358 | /* | |
1359 | * Create a string of form "foo!bar@fubar" given foo, bar and fubar | |
1360 | * as the parameters. If NULL, they become "*". | |
1361 | */ | |
1362 | #define NUH_BUFSIZE (NICKLEN + USERLEN + HOSTLEN + 10) | |
1363 | static char *make_nick_user_host(char *namebuf, const char *nick, | |
1364 | const char *name, const char *host) | |
1365 | { | |
1366 | snprintf(namebuf, NUH_BUFSIZE, "%s!%s@%s", nick, name, host); | |
1367 | return namebuf; | |
1368 | } | |
1369 | ||
1370 | /* | |
1371 | * pretty_mask | |
1372 | * | |
1373 | * by Carlo Wood (Run), 05 Oct 1998. | |
1374 | * | |
1375 | * Canonify a mask. | |
1376 | * | |
1377 | * When the nick is longer then NICKLEN, it is cut off (its an error of course). | |
1378 | * When the user name or host name are too long (USERLEN and HOSTLEN | |
1379 | * respectively) then they are cut off at the start with a '*'. | |
1380 | * | |
1381 | * The following transformations are made: | |
1382 | * | |
1383 | * 1) xxx -> nick!*@* | |
1384 | * 2) xxx.xxx -> *!*@host | |
1385 | * 3) xxx!yyy -> nick!user@* | |
1386 | * 4) xxx@yyy -> *!user@host | |
1387 | * 5) xxx!yyy@zzz -> nick!user@host | |
1388 | */ | |
1389 | char *pretty_mask(char *mask) | |
1390 | { | |
1391 | static char star[2] = { '*', 0 }; | |
1392 | static char retmask[NUH_BUFSIZE] = ""; | |
1393 | char *last_dot = NULL; | |
1394 | char *ptr = NULL; | |
1395 | ||
1396 | /* Case 1: default */ | |
1397 | char *nick = mask; | |
1398 | char *user = star; | |
1399 | char *host = star; | |
1400 | ||
1401 | /* Do a _single_ pass through the characters of the mask: */ | |
1402 | for (ptr = mask; *ptr; ++ptr) | |
1403 | { | |
1404 | if (*ptr == '!') | |
1405 | { | |
1406 | /* Case 3 or 5: Found first '!' (without finding a '@' yet) */ | |
1407 | user = ++ptr; | |
1408 | host = star; | |
1409 | } | |
1410 | else if (*ptr == '@') | |
1411 | { | |
1412 | /* Case 4: Found last '@' (without finding a '!' yet) */ | |
1413 | nick = star; | |
1414 | user = mask; | |
1415 | host = ++ptr; | |
1416 | } | |
1417 | else if (*ptr == '.') | |
1418 | { | |
1419 | /* Case 2: Found last '.' (without finding a '!' or '@' yet) */ | |
1420 | last_dot = ptr; | |
1421 | continue; | |
1422 | } | |
1423 | else | |
1424 | continue; | |
1425 | for (; *ptr; ++ptr) | |
1426 | { | |
1427 | if (*ptr == '@') | |
1428 | { | |
1429 | /* Case 4 or 5: Found last '@' */ | |
1430 | host = ptr + 1; | |
1431 | } | |
1432 | } | |
1433 | break; | |
1434 | } | |
1435 | if (user == star && last_dot) | |
1436 | { | |
1437 | /* Case 2: */ | |
1438 | nick = star; | |
1439 | user = star; | |
1440 | host = mask; | |
1441 | } | |
1442 | /* Check lengths */ | |
1443 | if (nick != star) | |
1444 | { | |
1445 | char *nick_end = (user != star) ? user - 1 : ptr; | |
1446 | if (nick_end - nick > NICKLEN) | |
1447 | nick[NICKLEN] = 0; | |
1448 | *nick_end = 0; | |
1449 | } | |
1450 | if (user != star) | |
1451 | { | |
1452 | char *user_end = (host != star) ? host - 1 : ptr; | |
1453 | if (user_end - user > USERLEN) | |
1454 | { | |
1455 | user = user_end - USERLEN; | |
1456 | *user = '*'; | |
1457 | } | |
1458 | *user_end = 0; | |
1459 | } | |
1460 | if (host != star && ptr - host > HOSTLEN) | |
1461 | { | |
1462 | host = ptr - HOSTLEN; | |
1463 | *host = '*'; | |
1464 | } | |
1465 | return make_nick_user_host(retmask, nick, user, host); | |
1466 | } | |
1467 | ||
1468 | int str_is_number(const char *str) | |
1469 | { | |
1470 | char *ptr; | |
1471 | int ret = false; | |
1472 | for(ptr = (char *)str;*ptr;ptr++) { | |
1473 | if((*ptr >= '0' && *ptr <= '9') || *ptr == '-') | |
1474 | ret = true; | |
1475 | else | |
1476 | return false; | |
1477 | } | |
1478 | return ret; | |
1479 | } |