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212380e3 AC |
1 | /* |
2 | * charybdis: an advanced internet relay chat daemon (ircd). | |
3 | * hostmask.c: Code to efficiently find IP & hostmask based configs. | |
4 | * | |
5 | * Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center | |
6 | * Copyright (C) 1996-2002 Hybrid Development Team | |
7 | * Copyright (C) 2002-2005 ircd-ratbox development team | |
8 | * Copyright (C) 2005-2006 charybdis development team | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License as published by | |
12 | * the Free Software Foundation; either version 2 of the License, or | |
13 | * (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | * GNU General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, write to the Free Software | |
22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 | |
23 | * USA | |
24 | * | |
25 | * $Id: hostmask.c 2757 2006-11-10 22:58:15Z jilles $ | |
26 | */ | |
27 | ||
28 | #include "stdinc.h" | |
29 | #include "memory.h" | |
30 | #include "ircd_defs.h" | |
31 | #include "s_conf.h" | |
32 | #include "hostmask.h" | |
33 | #include "numeric.h" | |
34 | #include "send.h" | |
35 | #include "irc_string.h" | |
36 | ||
37 | #ifdef IPV6 | |
38 | static unsigned long hash_ipv6(struct sockaddr *, int); | |
39 | #endif | |
40 | static unsigned long hash_ipv4(struct sockaddr *, int); | |
41 | ||
42 | ||
43 | /* int parse_netmask(const char *, struct irc_sockaddr_storage *, int *); | |
44 | * Input: A hostmask, or an IPV4/6 address. | |
45 | * Output: An integer describing whether it is an IPV4, IPV6 address or a | |
46 | * hostmask, an address(if it is an IP mask), | |
47 | * a bitlength(if it is IP mask). | |
48 | * Side effects: None | |
49 | */ | |
50 | int | |
51 | parse_netmask(const char *text, struct sockaddr *naddr, int *nb) | |
52 | { | |
53 | char *ip = LOCAL_COPY(text); | |
54 | char *ptr; | |
55 | struct irc_sockaddr_storage *addr, xaddr; | |
56 | int *b, xb; | |
57 | if(nb == NULL) | |
58 | b = &xb; | |
59 | else | |
60 | b = nb; | |
61 | ||
62 | if(naddr == NULL) | |
63 | addr = (struct irc_sockaddr_storage *)&xaddr; | |
64 | else | |
65 | addr = (struct irc_sockaddr_storage *)naddr; | |
66 | ||
67 | #ifdef IPV6 | |
68 | if(strchr(ip, ':')) | |
69 | { | |
70 | if((ptr = strchr(ip, '/'))) | |
71 | { | |
72 | *ptr = '\0'; | |
73 | ptr++; | |
74 | *b = atoi(ptr); | |
75 | if(*b > 128) | |
76 | *b = 128; | |
77 | } else | |
78 | *b = 128; | |
79 | if(inetpton_sock(ip, (struct sockaddr *)addr) > 0) | |
80 | return HM_IPV6; | |
81 | else | |
82 | return HM_HOST; | |
83 | } else | |
84 | #endif | |
85 | if(strchr(text, '.')) | |
86 | { | |
87 | if((ptr = strchr(ip, '/'))) | |
88 | { | |
89 | *ptr = '\0'; | |
90 | ptr++; | |
91 | *b = atoi(ptr); | |
92 | if(*b > 32) | |
93 | *b = 32; | |
94 | } else | |
95 | *b = 32; | |
96 | if(inetpton_sock(ip, (struct sockaddr *)addr) > 0) | |
97 | return HM_IPV4; | |
98 | else | |
99 | return HM_HOST; | |
100 | } | |
101 | return HM_HOST; | |
102 | } | |
103 | ||
104 | /* Hashtable stuff...now external as its used in m_stats.c */ | |
105 | struct AddressRec *atable[ATABLE_SIZE]; | |
106 | ||
107 | void | |
108 | init_host_hash(void) | |
109 | { | |
110 | memset(&atable, 0, sizeof(atable)); | |
111 | } | |
112 | ||
113 | /* unsigned long hash_ipv4(struct irc_sockaddr_storage*) | |
114 | * Input: An IP address. | |
115 | * Output: A hash value of the IP address. | |
116 | * Side effects: None | |
117 | */ | |
118 | static unsigned long | |
119 | hash_ipv4(struct sockaddr *saddr, int bits) | |
120 | { | |
121 | struct sockaddr_in *addr = (struct sockaddr_in *) saddr; | |
122 | ||
123 | if(bits != 0) | |
124 | { | |
125 | unsigned long av = ntohl(addr->sin_addr.s_addr) & ~((1 << (32 - bits)) - 1); | |
126 | return (av ^ (av >> 12) ^ (av >> 24)) & (ATABLE_SIZE - 1); | |
127 | } | |
128 | ||
129 | return 0; | |
130 | } | |
131 | ||
132 | /* unsigned long hash_ipv6(struct irc_sockaddr_storage*) | |
133 | * Input: An IP address. | |
134 | * Output: A hash value of the IP address. | |
135 | * Side effects: None | |
136 | */ | |
137 | #ifdef IPV6 | |
138 | static unsigned long | |
139 | hash_ipv6(struct sockaddr *saddr, int bits) | |
140 | { | |
141 | struct sockaddr_in6 *addr = (struct sockaddr_in6 *) saddr; | |
142 | unsigned long v = 0, n; | |
143 | for (n = 0; n < 16; n++) | |
144 | { | |
145 | if(bits >= 8) | |
146 | { | |
147 | v ^= addr->sin6_addr.s6_addr[n]; | |
148 | bits -= 8; | |
149 | } | |
150 | else if(bits) | |
151 | { | |
152 | v ^= addr->sin6_addr.s6_addr[n] & ~((1 << (8 - bits)) - 1); | |
153 | return v & (ATABLE_SIZE - 1); | |
154 | } | |
155 | else | |
156 | return v & (ATABLE_SIZE - 1); | |
157 | } | |
158 | return v & (ATABLE_SIZE - 1); | |
159 | } | |
160 | #endif | |
161 | ||
162 | /* int hash_text(const char *start) | |
163 | * Input: The start of the text to hash. | |
164 | * Output: The hash of the string between 1 and (TH_MAX-1) | |
165 | * Side-effects: None. | |
166 | */ | |
167 | static int | |
168 | hash_text(const char *start) | |
169 | { | |
170 | const char *p = start; | |
171 | unsigned long h = 0; | |
172 | ||
173 | while(*p) | |
174 | { | |
175 | h = (h << 4) - (h + (unsigned char) ToLower(*p++)); | |
176 | } | |
177 | ||
178 | return (h & (ATABLE_SIZE - 1)); | |
179 | } | |
180 | ||
181 | /* unsigned long get_hash_mask(const char *) | |
182 | * Input: The text to hash. | |
183 | * Output: The hash of the string right of the first '.' past the last | |
184 | * wildcard in the string. | |
185 | * Side-effects: None. | |
186 | */ | |
187 | static unsigned long | |
188 | get_mask_hash(const char *text) | |
189 | { | |
190 | const char *hp = "", *p; | |
191 | ||
192 | for (p = text + strlen(text) - 1; p >= text; p--) | |
193 | if(*p == '*' || *p == '?') | |
194 | return hash_text(hp); | |
195 | else if(*p == '.') | |
196 | hp = p + 1; | |
197 | return hash_text(text); | |
198 | } | |
199 | ||
200 | /* struct ConfItem* find_conf_by_address(const char*, struct irc_sockaddr_storage*, | |
201 | * int type, int fam, const char *username) | |
202 | * Input: The hostname, the address, the type of mask to find, the address | |
203 | * family, the username. | |
204 | * Output: The matching value with the highest precedence. | |
205 | * Side-effects: None | |
206 | * Note: Setting bit 0 of the type means that the username is ignored. | |
207 | */ | |
208 | struct ConfItem * | |
209 | find_conf_by_address(const char *name, const char *sockhost, | |
210 | const char *orighost, | |
211 | struct sockaddr *addr, int type, int fam, | |
212 | const char *username) | |
213 | { | |
214 | unsigned long hprecv = 0; | |
215 | struct ConfItem *hprec = NULL; | |
216 | struct AddressRec *arec; | |
217 | int b; | |
218 | ||
219 | if(username == NULL) | |
220 | username = ""; | |
221 | ||
222 | if(addr) | |
223 | { | |
224 | /* Check for IPV6 matches... */ | |
225 | #ifdef IPV6 | |
226 | if(fam == AF_INET6) | |
227 | { | |
228 | ||
229 | for (b = 128; b >= 0; b -= 16) | |
230 | { | |
231 | for (arec = atable[hash_ipv6(addr, b)]; arec; arec = arec->next) | |
232 | if(arec->type == (type & ~0x1) && | |
233 | arec->masktype == HM_IPV6 && | |
234 | comp_with_mask_sock(addr, (struct sockaddr *)&arec->Mask.ipa.addr, | |
235 | arec->Mask.ipa.bits) && (type & 0x1 | |
236 | || | |
237 | match(arec-> | |
238 | username, | |
239 | username)) | |
240 | && arec->precedence > hprecv) | |
241 | { | |
242 | hprecv = arec->precedence; | |
243 | hprec = arec->aconf; | |
244 | } | |
245 | } | |
246 | } | |
247 | else | |
248 | #endif | |
249 | if(fam == AF_INET) | |
250 | { | |
251 | for (b = 32; b >= 0; b -= 8) | |
252 | { | |
253 | for (arec = atable[hash_ipv4(addr, b)]; arec; arec = arec->next) | |
254 | if(arec->type == (type & ~0x1) && | |
255 | arec->masktype == HM_IPV4 && | |
256 | arec->precedence > hprecv && | |
257 | comp_with_mask_sock(addr, (struct sockaddr *)&arec->Mask.ipa.addr, | |
258 | arec->Mask.ipa.bits) && | |
259 | (type & 0x1 || match(arec->username, username))) | |
260 | { | |
261 | hprecv = arec->precedence; | |
262 | hprec = arec->aconf; | |
263 | } | |
264 | } | |
265 | } | |
266 | } | |
267 | ||
268 | if(orighost != NULL) | |
269 | { | |
270 | const char *p; | |
271 | ||
272 | for (p = orighost; p != NULL;) | |
273 | { | |
274 | for (arec = atable[hash_text(p)]; arec; arec = arec->next) | |
275 | ||
276 | if((arec->type == (type & ~0x1)) && | |
277 | (arec->masktype == HM_HOST) && | |
278 | arec->precedence > hprecv && | |
279 | match(arec->Mask.hostname, orighost) && | |
280 | (type & 0x1 || match(arec->username, username))) | |
281 | { | |
282 | hprecv = arec->precedence; | |
283 | hprec = arec->aconf; | |
284 | } | |
285 | p = strchr(p, '.'); | |
286 | if(p != NULL) | |
287 | p++; | |
288 | else | |
289 | break; | |
290 | } | |
291 | for (arec = atable[0]; arec; arec = arec->next) | |
292 | { | |
293 | if(arec->type == (type & ~0x1) && | |
294 | arec->masktype == HM_HOST && | |
295 | arec->precedence > hprecv && | |
296 | (match(arec->Mask.hostname, orighost) || | |
297 | (sockhost && match(arec->Mask.hostname, sockhost))) && | |
298 | (type & 0x1 || match(arec->username, username))) | |
299 | { | |
300 | hprecv = arec->precedence; | |
301 | hprec = arec->aconf; | |
302 | } | |
303 | } | |
304 | } | |
305 | ||
306 | if(name != NULL) | |
307 | { | |
308 | const char *p; | |
309 | /* And yes - we have to check p after strchr and p after increment for | |
310 | * NULL -kre */ | |
311 | for (p = name; p != NULL;) | |
312 | { | |
313 | for (arec = atable[hash_text(p)]; arec; arec = arec->next) | |
314 | if((arec->type == (type & ~0x1)) && | |
315 | (arec->masktype == HM_HOST) && | |
316 | arec->precedence > hprecv && | |
317 | match(arec->Mask.hostname, name) && | |
318 | (type & 0x1 || match(arec->username, username))) | |
319 | { | |
320 | hprecv = arec->precedence; | |
321 | hprec = arec->aconf; | |
322 | } | |
323 | p = strchr(p, '.'); | |
324 | if(p != NULL) | |
325 | p++; | |
326 | else | |
327 | break; | |
328 | } | |
329 | for (arec = atable[0]; arec; arec = arec->next) | |
330 | { | |
331 | if(arec->type == (type & ~0x1) && | |
332 | arec->masktype == HM_HOST && | |
333 | arec->precedence > hprecv && | |
334 | (match(arec->Mask.hostname, name) || | |
335 | (sockhost && match(arec->Mask.hostname, sockhost))) && | |
336 | (type & 0x1 || match(arec->username, username))) | |
337 | { | |
338 | hprecv = arec->precedence; | |
339 | hprec = arec->aconf; | |
340 | } | |
341 | } | |
342 | } | |
343 | return hprec; | |
344 | } | |
345 | ||
346 | /* struct ConfItem* find_address_conf(const char*, const char*, | |
347 | * struct irc_sockaddr_storage*, int); | |
348 | * Input: The hostname, username, address, address family. | |
349 | * Output: The applicable ConfItem. | |
350 | * Side-effects: None | |
351 | */ | |
352 | struct ConfItem * | |
353 | find_address_conf(const char *host, const char *sockhost, const char *user, | |
354 | const char *notildeuser, struct sockaddr *ip, int aftype) | |
355 | { | |
356 | struct ConfItem *iconf, *kconf; | |
357 | const char *vuser; | |
358 | ||
359 | /* Find the best I-line... If none, return NULL -A1kmm */ | |
360 | if(!(iconf = find_conf_by_address(host, sockhost, NULL, ip, CONF_CLIENT, aftype, user))) | |
361 | return NULL; | |
362 | /* Find what their visible username will be. | |
363 | * Note that the username without tilde may contain one char more. | |
364 | * -- jilles */ | |
365 | vuser = IsNoTilde(iconf) ? notildeuser : user; | |
366 | ||
367 | /* If they are exempt from K-lines, return the best I-line. -A1kmm */ | |
368 | if(IsConfExemptKline(iconf)) | |
369 | return iconf; | |
370 | ||
371 | /* Find the best K-line... -A1kmm */ | |
372 | kconf = find_conf_by_address(host, sockhost, NULL, ip, CONF_KILL, aftype, user); | |
373 | ||
374 | /* If they are K-lined, return the K-line */ | |
375 | if(kconf) | |
376 | return kconf; | |
377 | ||
378 | /* if theres a spoof, check it against klines.. */ | |
379 | if(IsConfDoSpoofIp(iconf)) | |
380 | { | |
381 | char *p = strchr(iconf->name, '@'); | |
382 | ||
383 | /* note, we dont need to pass sockhost here, as its | |
384 | * guaranteed to not match by whats above.. --anfl | |
385 | */ | |
386 | if(p) | |
387 | { | |
388 | *p = '\0'; | |
389 | kconf = find_conf_by_address(p+1, NULL, NULL, ip, CONF_KILL, aftype, iconf->name); | |
390 | *p = '@'; | |
391 | } | |
392 | else | |
393 | kconf = find_conf_by_address(iconf->name, NULL, NULL, ip, CONF_KILL, aftype, vuser); | |
394 | ||
395 | if(kconf) | |
396 | return kconf; | |
397 | } | |
398 | ||
399 | /* if no_tilde, check the username without tilde against klines too | |
400 | * -- jilles */ | |
401 | if(user != vuser) | |
402 | { | |
403 | kconf = find_conf_by_address(host, sockhost, NULL, ip, CONF_KILL, aftype, vuser); | |
404 | if(kconf) | |
405 | return kconf; | |
406 | } | |
407 | ||
408 | /* hunt for a gline */ | |
409 | if(ConfigFileEntry.glines) | |
410 | { | |
411 | kconf = find_conf_by_address(host, sockhost, NULL, ip, CONF_GLINE, aftype, user); | |
412 | ||
413 | if((kconf != NULL) && !IsConfExemptGline(iconf)) | |
414 | return kconf; | |
415 | } | |
416 | ||
417 | return iconf; | |
418 | } | |
419 | ||
420 | /* struct ConfItem* find_dline(struct irc_sockaddr_storage*, int) | |
421 | * Input: An address, an address family. | |
422 | * Output: The best matching D-line or exempt line. | |
423 | * Side effects: None. | |
424 | */ | |
425 | struct ConfItem * | |
426 | find_dline(struct sockaddr *addr, int aftype) | |
427 | { | |
428 | struct ConfItem *eline; | |
429 | eline = find_conf_by_address(NULL, NULL, NULL, addr, CONF_EXEMPTDLINE | 1, aftype, NULL); | |
430 | if(eline) | |
431 | return eline; | |
432 | return find_conf_by_address(NULL, NULL, NULL, addr, CONF_DLINE | 1, aftype, NULL); | |
433 | } | |
434 | ||
6f3a09ff | 435 | /* void find_exact_conf_by_address(const char*, int, const char *) |
4e0f14a0 JT |
436 | * Input: |
437 | * Output: ConfItem if found | |
438 | * Side-effects: None | |
439 | */ | |
440 | struct ConfItem * | |
441 | find_exact_conf_by_address(const char *address, int type, const char *username) | |
442 | { | |
443 | int masktype, bits; | |
444 | unsigned long hv; | |
445 | struct AddressRec *arec; | |
446 | struct irc_sockaddr_storage addr; | |
447 | ||
448 | if(address == NULL) | |
449 | address = "/NOMATCH!/"; | |
450 | arec = MyMalloc(sizeof(struct AddressRec)); | |
451 | masktype = parse_netmask(address, (struct sockaddr *)&addr, &bits); | |
452 | #ifdef IPV6 | |
453 | if(masktype == HM_IPV6) | |
454 | { | |
455 | /* We have to do this, since we do not re-hash for every bit -A1kmm. */ | |
456 | hv = hash_ipv6((struct sockaddr *)&addr, bits - bits % 16); | |
457 | } | |
458 | else | |
459 | #endif | |
460 | if(masktype == HM_IPV4) | |
461 | { | |
462 | /* We have to do this, since we do not re-hash for every bit -A1kmm. */ | |
463 | hv = hash_ipv4((struct sockaddr *)&addr, bits - bits % 8); | |
464 | } | |
465 | else | |
466 | { | |
467 | hv = get_mask_hash(address); | |
468 | } | |
469 | for (arec = atable[hv]; arec; arec = arec->next) | |
470 | { | |
471 | if (arec->type == type && | |
472 | arec->masktype == masktype && | |
6f3a09ff | 473 | (arec->username == NULL || username == NULL ? arec->username == username : !irccmp(arec->username, username))) |
4e0f14a0 JT |
474 | { |
475 | if (masktype == HM_HOST) | |
476 | { | |
477 | if (!irccmp(arec->Mask.hostname, address)) | |
478 | return arec->aconf; | |
479 | } | |
480 | else | |
481 | { | |
482 | if (arec->Mask.ipa.bits == bits && | |
483 | comp_with_mask_sock((struct sockaddr *)&arec->Mask.ipa.addr, (struct sockaddr *)&addr, bits)) | |
484 | return arec->aconf; | |
485 | } | |
486 | } | |
487 | } | |
488 | return NULL; | |
489 | } | |
490 | ||
212380e3 AC |
491 | /* void add_conf_by_address(const char*, int, const char *, |
492 | * struct ConfItem *aconf) | |
493 | * Input: | |
494 | * Output: None | |
495 | * Side-effects: Adds this entry to the hash table. | |
496 | */ | |
497 | void | |
498 | add_conf_by_address(const char *address, int type, const char *username, struct ConfItem *aconf) | |
499 | { | |
500 | static unsigned long prec_value = 0xFFFFFFFF; | |
501 | int masktype, bits; | |
502 | unsigned long hv; | |
503 | struct AddressRec *arec; | |
504 | ||
505 | if(address == NULL) | |
506 | address = "/NOMATCH!/"; | |
507 | arec = MyMalloc(sizeof(struct AddressRec)); | |
508 | masktype = parse_netmask(address, (struct sockaddr *)&arec->Mask.ipa.addr, &bits); | |
509 | arec->Mask.ipa.bits = bits; | |
510 | arec->masktype = masktype; | |
511 | #ifdef IPV6 | |
512 | if(masktype == HM_IPV6) | |
513 | { | |
514 | /* We have to do this, since we do not re-hash for every bit -A1kmm. */ | |
515 | bits -= bits % 16; | |
516 | arec->next = atable[(hv = hash_ipv6((struct sockaddr *)&arec->Mask.ipa.addr, bits))]; | |
517 | atable[hv] = arec; | |
518 | } | |
519 | else | |
520 | #endif | |
521 | if(masktype == HM_IPV4) | |
522 | { | |
523 | /* We have to do this, since we do not re-hash for every bit -A1kmm. */ | |
524 | bits -= bits % 8; | |
525 | arec->next = atable[(hv = hash_ipv4((struct sockaddr *)&arec->Mask.ipa.addr, bits))]; | |
526 | atable[hv] = arec; | |
527 | } | |
528 | else | |
529 | { | |
530 | arec->Mask.hostname = address; | |
531 | arec->next = atable[(hv = get_mask_hash(address))]; | |
532 | atable[hv] = arec; | |
533 | } | |
534 | arec->username = username; | |
535 | arec->aconf = aconf; | |
536 | arec->precedence = prec_value--; | |
537 | arec->type = type; | |
538 | } | |
539 | ||
540 | /* void delete_one_address(const char*, struct ConfItem*) | |
541 | * Input: An address string, the associated ConfItem. | |
542 | * Output: None | |
543 | * Side effects: Deletes an address record. Frees the ConfItem if there | |
544 | * is nothing referencing it, sets it as illegal otherwise. | |
545 | */ | |
546 | void | |
547 | delete_one_address_conf(const char *address, struct ConfItem *aconf) | |
548 | { | |
549 | int masktype, bits; | |
550 | unsigned long hv; | |
551 | struct AddressRec *arec, *arecl = NULL; | |
552 | struct irc_sockaddr_storage addr; | |
553 | masktype = parse_netmask(address, (struct sockaddr *)&addr, &bits); | |
554 | #ifdef IPV6 | |
555 | if(masktype == HM_IPV6) | |
556 | { | |
557 | /* We have to do this, since we do not re-hash for every bit -A1kmm. */ | |
558 | bits -= bits % 16; | |
559 | hv = hash_ipv6((struct sockaddr *)&addr, bits); | |
560 | } | |
561 | else | |
562 | #endif | |
563 | if(masktype == HM_IPV4) | |
564 | { | |
565 | /* We have to do this, since we do not re-hash for every bit -A1kmm. */ | |
566 | bits -= bits % 8; | |
567 | hv = hash_ipv4((struct sockaddr *)&addr, bits); | |
568 | } | |
569 | else | |
570 | hv = get_mask_hash(address); | |
571 | for (arec = atable[hv]; arec; arec = arec->next) | |
572 | { | |
573 | if(arec->aconf == aconf) | |
574 | { | |
575 | if(arecl) | |
576 | arecl->next = arec->next; | |
577 | else | |
578 | atable[hv] = arec->next; | |
579 | aconf->status |= CONF_ILLEGAL; | |
580 | if(!aconf->clients) | |
581 | free_conf(aconf); | |
582 | MyFree(arec); | |
583 | return; | |
584 | } | |
585 | arecl = arec; | |
586 | } | |
587 | } | |
588 | ||
589 | /* void clear_out_address_conf(void) | |
590 | * Input: None | |
591 | * Output: None | |
592 | * Side effects: Clears out all address records in the hash table, | |
593 | * frees them, and frees the ConfItems if nothing references | |
594 | * them, otherwise sets them as illegal. | |
595 | */ | |
596 | void | |
597 | clear_out_address_conf(void) | |
598 | { | |
599 | int i; | |
600 | struct AddressRec **store_next; | |
601 | struct AddressRec *arec, *arecn; | |
602 | ||
603 | for (i = 0; i < ATABLE_SIZE; i++) | |
604 | { | |
605 | store_next = &atable[i]; | |
606 | for (arec = atable[i]; arec; arec = arecn) | |
607 | { | |
608 | arecn = arec->next; | |
609 | /* We keep the temporary K-lines and destroy the | |
610 | * permanent ones, just to be confusing :) -A1kmm */ | |
611 | if(arec->aconf->flags & CONF_FLAGS_TEMPORARY || | |
612 | (arec->type != CONF_CLIENT && arec->type != CONF_EXEMPTDLINE)) | |
613 | { | |
614 | *store_next = arec; | |
615 | store_next = &arec->next; | |
616 | } | |
617 | else | |
618 | { | |
619 | arec->aconf->status |= CONF_ILLEGAL; | |
620 | if(!arec->aconf->clients) | |
621 | free_conf(arec->aconf); | |
622 | MyFree(arec); | |
623 | } | |
624 | } | |
625 | *store_next = NULL; | |
626 | } | |
627 | } | |
628 | ||
629 | void | |
630 | clear_out_address_conf_bans(void) | |
631 | { | |
632 | int i; | |
633 | struct AddressRec **store_next; | |
634 | struct AddressRec *arec, *arecn; | |
635 | ||
636 | for (i = 0; i < ATABLE_SIZE; i++) | |
637 | { | |
638 | store_next = &atable[i]; | |
639 | for (arec = atable[i]; arec; arec = arecn) | |
640 | { | |
641 | arecn = arec->next; | |
642 | /* We keep the temporary K-lines and destroy the | |
643 | * permanent ones, just to be confusing :) -A1kmm */ | |
644 | if(arec->aconf->flags & CONF_FLAGS_TEMPORARY || | |
645 | (arec->type == CONF_CLIENT || arec->type == CONF_EXEMPTDLINE)) | |
646 | { | |
647 | *store_next = arec; | |
648 | store_next = &arec->next; | |
649 | } | |
650 | else | |
651 | { | |
652 | arec->aconf->status |= CONF_ILLEGAL; | |
653 | if(!arec->aconf->clients) | |
654 | free_conf(arec->aconf); | |
655 | MyFree(arec); | |
656 | } | |
657 | } | |
658 | *store_next = NULL; | |
659 | } | |
660 | } | |
661 | ||
662 | ||
663 | /* | |
664 | * show_iline_prefix() | |
665 | * | |
666 | * inputs - pointer to struct Client requesting output | |
667 | * - pointer to struct ConfItem | |
668 | * - name to which iline prefix will be prefixed to | |
669 | * output - pointer to static string with prefixes listed in ascii form | |
670 | * side effects - NONE | |
671 | */ | |
672 | char * | |
673 | show_iline_prefix(struct Client *sptr, struct ConfItem *aconf, char *name) | |
674 | { | |
675 | static char prefix_of_host[USERLEN + 15]; | |
676 | char *prefix_ptr; | |
677 | ||
678 | prefix_ptr = prefix_of_host; | |
679 | if(IsNoTilde(aconf)) | |
680 | *prefix_ptr++ = '-'; | |
681 | if(IsLimitIp(aconf)) | |
682 | *prefix_ptr++ = '!'; | |
683 | if(IsNeedIdentd(aconf)) | |
684 | *prefix_ptr++ = '+'; | |
685 | if(IsPassIdentd(aconf)) | |
686 | *prefix_ptr++ = '$'; | |
687 | if(IsNoMatchIp(aconf)) | |
688 | *prefix_ptr++ = '%'; | |
689 | if(IsConfDoSpoofIp(aconf)) | |
690 | *prefix_ptr++ = '='; | |
691 | if(MyOper(sptr) && IsConfExemptKline(aconf)) | |
692 | *prefix_ptr++ = '^'; | |
693 | if(MyOper(sptr) && IsConfExemptLimits(aconf)) | |
694 | *prefix_ptr++ = '>'; | |
695 | if(MyOper(sptr) && IsConfIdlelined(aconf)) | |
696 | *prefix_ptr++ = '<'; | |
697 | *prefix_ptr = '\0'; | |
698 | strncpy(prefix_ptr, name, USERLEN); | |
699 | return (prefix_of_host); | |
700 | } | |
701 | ||
702 | /* report_auth() | |
703 | * | |
704 | * Inputs: pointer to client to report to | |
705 | * Output: None | |
706 | * Side effects: Reports configured auth{} blocks to client_p | |
707 | */ | |
708 | void | |
709 | report_auth(struct Client *client_p) | |
710 | { | |
711 | char *name, *host, *pass, *user, *classname; | |
712 | struct AddressRec *arec; | |
713 | struct ConfItem *aconf; | |
714 | int i, port; | |
715 | ||
716 | for (i = 0; i < ATABLE_SIZE; i++) | |
717 | for (arec = atable[i]; arec; arec = arec->next) | |
718 | if(arec->type == CONF_CLIENT) | |
719 | { | |
720 | aconf = arec->aconf; | |
721 | ||
722 | if(!MyOper(client_p) && IsConfDoSpoofIp(aconf)) | |
723 | continue; | |
724 | ||
725 | get_printable_conf(aconf, &name, &host, &pass, &user, &port, | |
726 | &classname); | |
727 | ||
728 | sendto_one_numeric(client_p, RPL_STATSILINE, | |
729 | form_str(RPL_STATSILINE), | |
730 | name, show_iline_prefix(client_p, aconf, user), | |
731 | show_ip_conf(aconf, client_p) ? host : "255.255.255.255", | |
732 | port, classname); | |
733 | } | |
734 | } | |
735 | ||
736 | /* report_Klines() | |
737 | * | |
738 | * inputs - Client to report to, mask | |
739 | * outputs - | |
740 | * side effects - Reports configured K-lines to client_p. | |
741 | */ | |
742 | void | |
743 | report_Klines(struct Client *source_p) | |
744 | { | |
745 | char *host, *pass, *user, *oper_reason; | |
746 | struct AddressRec *arec; | |
747 | struct ConfItem *aconf = NULL; | |
748 | int i; | |
749 | ||
750 | for (i = 0; i < ATABLE_SIZE; i++) | |
751 | { | |
752 | for (arec = atable[i]; arec; arec = arec->next) | |
753 | { | |
754 | if(arec->type == CONF_KILL) | |
755 | { | |
756 | aconf = arec->aconf; | |
757 | ||
758 | /* its a tempkline, theyre reported elsewhere */ | |
759 | if(aconf->flags & CONF_FLAGS_TEMPORARY) | |
760 | continue; | |
761 | ||
762 | get_printable_kline(source_p, aconf, &host, &pass, &user, &oper_reason); | |
763 | sendto_one_numeric(source_p, RPL_STATSKLINE, | |
764 | form_str(RPL_STATSKLINE), | |
765 | 'K', host, user, pass, | |
766 | oper_reason ? "|" : "", | |
767 | oper_reason ? oper_reason : ""); | |
768 | } | |
769 | } | |
770 | } | |
771 | } |