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Commit | Line | Data |
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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 | |
05ee179e | 8 | * Copyright (C) 2005-2008 charybdis development team |
212380e3 AC |
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 | |
212380e3 AC |
24 | */ |
25 | ||
26 | #include "stdinc.h" | |
212380e3 AC |
27 | #include "ircd_defs.h" |
28 | #include "s_conf.h" | |
29 | #include "hostmask.h" | |
30 | #include "numeric.h" | |
31 | #include "send.h" | |
4562c604 | 32 | #include "match.h" |
212380e3 | 33 | |
212380e3 | 34 | static unsigned long hash_ipv6(struct sockaddr *, int); |
212380e3 AC |
35 | static unsigned long hash_ipv4(struct sockaddr *, int); |
36 | ||
37 | ||
e7046ee5 | 38 | /* int parse_netmask(const char *, struct rb_sockaddr_storage *, int *); |
212380e3 AC |
39 | * Input: A hostmask, or an IPV4/6 address. |
40 | * Output: An integer describing whether it is an IPV4, IPV6 address or a | |
41 | * hostmask, an address(if it is an IP mask), | |
42 | * a bitlength(if it is IP mask). | |
43 | * Side effects: None | |
44 | */ | |
45 | int | |
29c92cf9 | 46 | parse_netmask(const char *text, struct rb_sockaddr_storage *naddr, int *nb) |
212380e3 AC |
47 | { |
48 | char *ip = LOCAL_COPY(text); | |
49 | char *ptr; | |
e7046ee5 | 50 | struct rb_sockaddr_storage *addr, xaddr; |
212380e3 AC |
51 | int *b, xb; |
52 | if(nb == NULL) | |
53 | b = &xb; | |
54 | else | |
55 | b = nb; | |
55abcbb2 | 56 | |
212380e3 | 57 | if(naddr == NULL) |
29c92cf9 | 58 | addr = &xaddr; |
212380e3 | 59 | else |
29c92cf9 | 60 | addr = naddr; |
17e4b48b JT |
61 | |
62 | if(strpbrk(ip, "*?") != NULL) | |
63 | { | |
64 | return HM_HOST; | |
65 | } | |
212380e3 | 66 | if(strchr(ip, ':')) |
55abcbb2 | 67 | { |
212380e3 AC |
68 | if((ptr = strchr(ip, '/'))) |
69 | { | |
70 | *ptr = '\0'; | |
71 | ptr++; | |
72 | *b = atoi(ptr); | |
73 | if(*b > 128) | |
74 | *b = 128; | |
4e4a5fcc JT |
75 | else if(*b < 0) |
76 | return HM_HOST; | |
212380e3 AC |
77 | } else |
78 | *b = 128; | |
caa4d9d2 | 79 | if(rb_inet_pton_sock(ip, (struct sockaddr *)addr) > 0) |
212380e3 AC |
80 | return HM_IPV6; |
81 | else | |
82 | return HM_HOST; | |
83 | } else | |
212380e3 AC |
84 | if(strchr(text, '.')) |
85 | { | |
86 | if((ptr = strchr(ip, '/'))) | |
87 | { | |
88 | *ptr = '\0'; | |
89 | ptr++; | |
90 | *b = atoi(ptr); | |
91 | if(*b > 32) | |
92 | *b = 32; | |
4e4a5fcc JT |
93 | else if(*b < 0) |
94 | return HM_HOST; | |
212380e3 AC |
95 | } else |
96 | *b = 32; | |
caa4d9d2 | 97 | if(rb_inet_pton_sock(ip, (struct sockaddr *)addr) > 0) |
212380e3 AC |
98 | return HM_IPV4; |
99 | else | |
100 | return HM_HOST; | |
101 | } | |
102 | return HM_HOST; | |
103 | } | |
104 | ||
105 | /* Hashtable stuff...now external as its used in m_stats.c */ | |
106 | struct AddressRec *atable[ATABLE_SIZE]; | |
107 | ||
108 | void | |
109 | init_host_hash(void) | |
110 | { | |
111 | memset(&atable, 0, sizeof(atable)); | |
112 | } | |
113 | ||
e7046ee5 | 114 | /* unsigned long hash_ipv4(struct rb_sockaddr_storage*) |
212380e3 AC |
115 | * Input: An IP address. |
116 | * Output: A hash value of the IP address. | |
117 | * Side effects: None | |
118 | */ | |
119 | static unsigned long | |
120 | hash_ipv4(struct sockaddr *saddr, int bits) | |
121 | { | |
29c92cf9 | 122 | struct sockaddr_in *addr = (struct sockaddr_in *)(void *)saddr; |
55abcbb2 | 123 | |
212380e3 AC |
124 | if(bits != 0) |
125 | { | |
126 | unsigned long av = ntohl(addr->sin_addr.s_addr) & ~((1 << (32 - bits)) - 1); | |
127 | return (av ^ (av >> 12) ^ (av >> 24)) & (ATABLE_SIZE - 1); | |
128 | } | |
129 | ||
130 | return 0; | |
131 | } | |
132 | ||
e7046ee5 | 133 | /* unsigned long hash_ipv6(struct rb_sockaddr_storage*) |
212380e3 AC |
134 | * Input: An IP address. |
135 | * Output: A hash value of the IP address. | |
136 | * Side effects: None | |
137 | */ | |
212380e3 AC |
138 | static unsigned long |
139 | hash_ipv6(struct sockaddr *saddr, int bits) | |
140 | { | |
29c92cf9 | 141 | struct sockaddr_in6 *addr = (struct sockaddr_in6 *)(void *)saddr; |
212380e3 AC |
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 | } | |
212380e3 AC |
160 | |
161 | /* int hash_text(const char *start) | |
162 | * Input: The start of the text to hash. | |
163 | * Output: The hash of the string between 1 and (TH_MAX-1) | |
164 | * Side-effects: None. | |
165 | */ | |
166 | static int | |
167 | hash_text(const char *start) | |
168 | { | |
169 | const char *p = start; | |
170 | unsigned long h = 0; | |
171 | ||
172 | while(*p) | |
173 | { | |
7e6b5384 | 174 | h = (h << 4) - (h + (unsigned char) irctolower(*p++)); |
212380e3 AC |
175 | } |
176 | ||
177 | return (h & (ATABLE_SIZE - 1)); | |
178 | } | |
179 | ||
180 | /* unsigned long get_hash_mask(const char *) | |
181 | * Input: The text to hash. | |
182 | * Output: The hash of the string right of the first '.' past the last | |
183 | * wildcard in the string. | |
184 | * Side-effects: None. | |
185 | */ | |
186 | static unsigned long | |
187 | get_mask_hash(const char *text) | |
188 | { | |
189 | const char *hp = "", *p; | |
190 | ||
191 | for (p = text + strlen(text) - 1; p >= text; p--) | |
192 | if(*p == '*' || *p == '?') | |
193 | return hash_text(hp); | |
194 | else if(*p == '.') | |
195 | hp = p + 1; | |
196 | return hash_text(text); | |
197 | } | |
198 | ||
e7046ee5 | 199 | /* struct ConfItem* find_conf_by_address(const char*, struct rb_sockaddr_storage*, |
212380e3 AC |
200 | * int type, int fam, const char *username) |
201 | * Input: The hostname, the address, the type of mask to find, the address | |
202 | * family, the username. | |
203 | * Output: The matching value with the highest precedence. | |
204 | * Side-effects: None | |
205 | * Note: Setting bit 0 of the type means that the username is ignored. | |
206 | */ | |
207 | struct ConfItem * | |
208 | find_conf_by_address(const char *name, const char *sockhost, | |
209 | const char *orighost, | |
55abcbb2 | 210 | struct sockaddr *addr, int type, int fam, |
40c1fd47 | 211 | const char *username, const char *auth_user) |
212380e3 AC |
212 | { |
213 | unsigned long hprecv = 0; | |
214 | struct ConfItem *hprec = NULL; | |
215 | struct AddressRec *arec; | |
216 | int b; | |
217 | ||
218 | if(username == NULL) | |
219 | username = ""; | |
220 | ||
221 | if(addr) | |
222 | { | |
223 | /* Check for IPV6 matches... */ | |
212380e3 AC |
224 | if(fam == AF_INET6) |
225 | { | |
226 | ||
227 | for (b = 128; b >= 0; b -= 16) | |
228 | { | |
229 | for (arec = atable[hash_ipv6(addr, b)]; arec; arec = arec->next) | |
230 | if(arec->type == (type & ~0x1) && | |
231 | arec->masktype == HM_IPV6 && | |
232 | comp_with_mask_sock(addr, (struct sockaddr *)&arec->Mask.ipa.addr, | |
55abcbb2 KB |
233 | arec->Mask.ipa.bits) && |
234 | (type & 0x1 || match(arec-> username, username)) && | |
235 | (type != CONF_CLIENT || !arec->auth_user || | |
236 | (auth_user && match(arec->auth_user, auth_user))) && | |
237 | arec->precedence > hprecv) | |
212380e3 AC |
238 | { |
239 | hprecv = arec->precedence; | |
240 | hprec = arec->aconf; | |
241 | } | |
242 | } | |
243 | } | |
244 | else | |
212380e3 AC |
245 | if(fam == AF_INET) |
246 | { | |
247 | for (b = 32; b >= 0; b -= 8) | |
248 | { | |
249 | for (arec = atable[hash_ipv4(addr, b)]; arec; arec = arec->next) | |
250 | if(arec->type == (type & ~0x1) && | |
251 | arec->masktype == HM_IPV4 && | |
212380e3 | 252 | comp_with_mask_sock(addr, (struct sockaddr *)&arec->Mask.ipa.addr, |
55abcbb2 KB |
253 | arec->Mask.ipa.bits) && |
254 | (type & 0x1 || match(arec->username, username)) && | |
255 | (type != CONF_CLIENT || !arec->auth_user || | |
256 | (auth_user && match(arec->auth_user, auth_user))) && | |
257 | arec->precedence > hprecv) | |
212380e3 AC |
258 | { |
259 | hprecv = arec->precedence; | |
260 | hprec = arec->aconf; | |
261 | } | |
262 | } | |
263 | } | |
264 | } | |
265 | ||
266 | if(orighost != NULL) | |
267 | { | |
268 | const char *p; | |
269 | ||
270 | for (p = orighost; p != NULL;) | |
271 | { | |
272 | for (arec = atable[hash_text(p)]; arec; arec = arec->next) | |
55abcbb2 | 273 | |
212380e3 AC |
274 | if((arec->type == (type & ~0x1)) && |
275 | (arec->masktype == HM_HOST) && | |
276 | arec->precedence > hprecv && | |
277 | match(arec->Mask.hostname, orighost) && | |
55abcbb2 KB |
278 | (type != CONF_CLIENT || !arec->auth_user || |
279 | (auth_user && match(arec->auth_user, auth_user))) && | |
212380e3 AC |
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 && | |
55abcbb2 | 295 | arec->precedence > hprecv && |
212380e3 AC |
296 | (match(arec->Mask.hostname, orighost) || |
297 | (sockhost && match(arec->Mask.hostname, sockhost))) && | |
55abcbb2 KB |
298 | (type != CONF_CLIENT || !arec->auth_user || |
299 | (auth_user && match(arec->auth_user, auth_user))) && | |
212380e3 AC |
300 | (type & 0x1 || match(arec->username, username))) |
301 | { | |
302 | hprecv = arec->precedence; | |
303 | hprec = arec->aconf; | |
304 | } | |
305 | } | |
306 | } | |
307 | ||
308 | if(name != NULL) | |
309 | { | |
310 | const char *p; | |
311 | /* And yes - we have to check p after strchr and p after increment for | |
312 | * NULL -kre */ | |
313 | for (p = name; p != NULL;) | |
314 | { | |
315 | for (arec = atable[hash_text(p)]; arec; arec = arec->next) | |
316 | if((arec->type == (type & ~0x1)) && | |
317 | (arec->masktype == HM_HOST) && | |
318 | arec->precedence > hprecv && | |
319 | match(arec->Mask.hostname, name) && | |
55abcbb2 KB |
320 | (type != CONF_CLIENT || !arec->auth_user || |
321 | (auth_user && match(arec->auth_user, auth_user))) && | |
212380e3 AC |
322 | (type & 0x1 || match(arec->username, username))) |
323 | { | |
324 | hprecv = arec->precedence; | |
325 | hprec = arec->aconf; | |
326 | } | |
327 | p = strchr(p, '.'); | |
328 | if(p != NULL) | |
329 | p++; | |
330 | else | |
331 | break; | |
332 | } | |
333 | for (arec = atable[0]; arec; arec = arec->next) | |
334 | { | |
335 | if(arec->type == (type & ~0x1) && | |
336 | arec->masktype == HM_HOST && | |
55abcbb2 | 337 | arec->precedence > hprecv && |
212380e3 AC |
338 | (match(arec->Mask.hostname, name) || |
339 | (sockhost && match(arec->Mask.hostname, sockhost))) && | |
55abcbb2 KB |
340 | (type != CONF_CLIENT || !arec->auth_user || |
341 | (auth_user && match(arec->auth_user, auth_user))) && | |
212380e3 AC |
342 | (type & 0x1 || match(arec->username, username))) |
343 | { | |
344 | hprecv = arec->precedence; | |
345 | hprec = arec->aconf; | |
346 | } | |
347 | } | |
348 | } | |
349 | return hprec; | |
350 | } | |
351 | ||
352 | /* struct ConfItem* find_address_conf(const char*, const char*, | |
e7046ee5 | 353 | * struct rb_sockaddr_storage*, int); |
212380e3 AC |
354 | * Input: The hostname, username, address, address family. |
355 | * Output: The applicable ConfItem. | |
356 | * Side-effects: None | |
357 | */ | |
358 | struct ConfItem * | |
55abcbb2 | 359 | find_address_conf(const char *host, const char *sockhost, const char *user, |
40c1fd47 | 360 | const char *notildeuser, struct sockaddr *ip, int aftype, char *auth_user) |
212380e3 AC |
361 | { |
362 | struct ConfItem *iconf, *kconf; | |
363 | const char *vuser; | |
d006b551 | 364 | struct sockaddr_in ip4; |
212380e3 AC |
365 | |
366 | /* Find the best I-line... If none, return NULL -A1kmm */ | |
40c1fd47 | 367 | if(!(iconf = find_conf_by_address(host, sockhost, NULL, ip, CONF_CLIENT, aftype, user, auth_user))) |
212380e3 AC |
368 | return NULL; |
369 | /* Find what their visible username will be. | |
370 | * Note that the username without tilde may contain one char more. | |
371 | * -- jilles */ | |
372 | vuser = IsNoTilde(iconf) ? notildeuser : user; | |
373 | ||
374 | /* If they are exempt from K-lines, return the best I-line. -A1kmm */ | |
375 | if(IsConfExemptKline(iconf)) | |
376 | return iconf; | |
377 | ||
378 | /* Find the best K-line... -A1kmm */ | |
40c1fd47 | 379 | kconf = find_conf_by_address(host, sockhost, NULL, ip, CONF_KILL, aftype, user, NULL); |
212380e3 AC |
380 | |
381 | /* If they are K-lined, return the K-line */ | |
382 | if(kconf) | |
383 | return kconf; | |
384 | ||
385 | /* if theres a spoof, check it against klines.. */ | |
386 | if(IsConfDoSpoofIp(iconf)) | |
387 | { | |
27f616dd | 388 | char *p = strchr(iconf->info.name, '@'); |
212380e3 AC |
389 | |
390 | /* note, we dont need to pass sockhost here, as its | |
391 | * guaranteed to not match by whats above.. --anfl | |
392 | */ | |
393 | if(p) | |
394 | { | |
395 | *p = '\0'; | |
27f616dd | 396 | kconf = find_conf_by_address(p+1, NULL, NULL, ip, CONF_KILL, aftype, iconf->info.name, NULL); |
212380e3 AC |
397 | *p = '@'; |
398 | } | |
399 | else | |
27f616dd | 400 | kconf = find_conf_by_address(iconf->info.name, NULL, NULL, ip, CONF_KILL, aftype, vuser, NULL); |
212380e3 AC |
401 | |
402 | if(kconf) | |
403 | return kconf; | |
404 | } | |
405 | ||
406 | /* if no_tilde, check the username without tilde against klines too | |
407 | * -- jilles */ | |
408 | if(user != vuser) | |
409 | { | |
40c1fd47 | 410 | kconf = find_conf_by_address(host, sockhost, NULL, ip, CONF_KILL, aftype, vuser, NULL); |
212380e3 AC |
411 | if(kconf) |
412 | return kconf; | |
413 | } | |
414 | ||
6387b5ad | 415 | if(ip != NULL && ip->sa_family == AF_INET6 && |
4eafa9e6 | 416 | rb_ipv4_from_ipv6((const struct sockaddr_in6 *)(const void *)ip, &ip4)) |
d006b551 JT |
417 | { |
418 | kconf = find_conf_by_address(NULL, NULL, NULL, (struct sockaddr *)&ip4, CONF_KILL, AF_INET, vuser, NULL); | |
419 | if(kconf) | |
420 | return kconf; | |
421 | } | |
d006b551 | 422 | |
212380e3 AC |
423 | return iconf; |
424 | } | |
425 | ||
e7046ee5 | 426 | /* struct ConfItem* find_dline(struct rb_sockaddr_storage*, int) |
54ac8b60 VY |
427 | * Input: An address, an address family. |
428 | * Output: The best matching D-line or exempt line. | |
429 | * Side effects: None. | |
430 | */ | |
431 | struct ConfItem * | |
432 | find_dline(struct sockaddr *addr, int aftype) | |
433 | { | |
d006b551 | 434 | struct ConfItem *aconf; |
d006b551 | 435 | struct sockaddr_in addr2; |
d006b551 JT |
436 | |
437 | aconf = find_conf_by_address(NULL, NULL, NULL, addr, CONF_EXEMPTDLINE | 1, aftype, NULL, NULL); | |
438 | if(aconf) | |
439 | return aconf; | |
440 | aconf = find_conf_by_address(NULL, NULL, NULL, addr, CONF_DLINE | 1, aftype, NULL, NULL); | |
441 | if(aconf) | |
442 | return aconf; | |
d006b551 | 443 | if(addr->sa_family == AF_INET6 && |
4eafa9e6 | 444 | rb_ipv4_from_ipv6((const struct sockaddr_in6 *)(const void *)addr, &addr2)) |
d006b551 JT |
445 | { |
446 | aconf = find_conf_by_address(NULL, NULL, NULL, (struct sockaddr *)&addr2, CONF_DLINE | 1, AF_INET, NULL, NULL); | |
447 | if(aconf) | |
448 | return aconf; | |
449 | } | |
d006b551 | 450 | return NULL; |
54ac8b60 VY |
451 | } |
452 | ||
6f3a09ff | 453 | /* void find_exact_conf_by_address(const char*, int, const char *) |
55abcbb2 | 454 | * Input: |
4e0f14a0 JT |
455 | * Output: ConfItem if found |
456 | * Side-effects: None | |
457 | */ | |
458 | struct ConfItem * | |
459 | find_exact_conf_by_address(const char *address, int type, const char *username) | |
460 | { | |
461 | int masktype, bits; | |
462 | unsigned long hv; | |
463 | struct AddressRec *arec; | |
e7046ee5 | 464 | struct rb_sockaddr_storage addr; |
4e0f14a0 JT |
465 | |
466 | if(address == NULL) | |
467 | address = "/NOMATCH!/"; | |
29c92cf9 | 468 | masktype = parse_netmask(address, &addr, &bits); |
4e0f14a0 JT |
469 | if(masktype == HM_IPV6) |
470 | { | |
471 | /* We have to do this, since we do not re-hash for every bit -A1kmm. */ | |
472 | hv = hash_ipv6((struct sockaddr *)&addr, bits - bits % 16); | |
473 | } | |
de293496 | 474 | else if(masktype == HM_IPV4) |
4e0f14a0 JT |
475 | { |
476 | /* We have to do this, since we do not re-hash for every bit -A1kmm. */ | |
477 | hv = hash_ipv4((struct sockaddr *)&addr, bits - bits % 8); | |
478 | } | |
479 | else | |
480 | { | |
481 | hv = get_mask_hash(address); | |
482 | } | |
483 | for (arec = atable[hv]; arec; arec = arec->next) | |
484 | { | |
485 | if (arec->type == type && | |
486 | arec->masktype == masktype && | |
6f3a09ff | 487 | (arec->username == NULL || username == NULL ? arec->username == username : !irccmp(arec->username, username))) |
4e0f14a0 JT |
488 | { |
489 | if (masktype == HM_HOST) | |
490 | { | |
491 | if (!irccmp(arec->Mask.hostname, address)) | |
492 | return arec->aconf; | |
493 | } | |
494 | else | |
495 | { | |
496 | if (arec->Mask.ipa.bits == bits && | |
497 | comp_with_mask_sock((struct sockaddr *)&arec->Mask.ipa.addr, (struct sockaddr *)&addr, bits)) | |
498 | return arec->aconf; | |
499 | } | |
500 | } | |
501 | } | |
502 | return NULL; | |
503 | } | |
504 | ||
212380e3 AC |
505 | /* void add_conf_by_address(const char*, int, const char *, |
506 | * struct ConfItem *aconf) | |
55abcbb2 | 507 | * Input: |
212380e3 AC |
508 | * Output: None |
509 | * Side-effects: Adds this entry to the hash table. | |
510 | */ | |
511 | void | |
40c1fd47 | 512 | add_conf_by_address(const char *address, int type, const char *username, const char *auth_user, struct ConfItem *aconf) |
212380e3 AC |
513 | { |
514 | static unsigned long prec_value = 0xFFFFFFFF; | |
ab5fc9c0 | 515 | int bits; |
212380e3 AC |
516 | unsigned long hv; |
517 | struct AddressRec *arec; | |
518 | ||
519 | if(address == NULL) | |
520 | address = "/NOMATCH!/"; | |
eddc2ab6 | 521 | arec = rb_malloc(sizeof(struct AddressRec)); |
ab5fc9c0 | 522 | arec->masktype = parse_netmask(address, &arec->Mask.ipa.addr, &bits); |
ab5fc9c0 | 523 | if(arec->masktype == HM_IPV6) |
212380e3 | 524 | { |
ab5fc9c0 | 525 | arec->Mask.ipa.bits = bits; |
212380e3 AC |
526 | /* We have to do this, since we do not re-hash for every bit -A1kmm. */ |
527 | bits -= bits % 16; | |
528 | arec->next = atable[(hv = hash_ipv6((struct sockaddr *)&arec->Mask.ipa.addr, bits))]; | |
529 | atable[hv] = arec; | |
530 | } | |
de293496 | 531 | else if(arec->masktype == HM_IPV4) |
212380e3 | 532 | { |
ab5fc9c0 | 533 | arec->Mask.ipa.bits = bits; |
212380e3 AC |
534 | /* We have to do this, since we do not re-hash for every bit -A1kmm. */ |
535 | bits -= bits % 8; | |
536 | arec->next = atable[(hv = hash_ipv4((struct sockaddr *)&arec->Mask.ipa.addr, bits))]; | |
537 | atable[hv] = arec; | |
538 | } | |
539 | else | |
540 | { | |
541 | arec->Mask.hostname = address; | |
542 | arec->next = atable[(hv = get_mask_hash(address))]; | |
543 | atable[hv] = arec; | |
544 | } | |
545 | arec->username = username; | |
40c1fd47 | 546 | arec->auth_user = auth_user; |
212380e3 AC |
547 | arec->aconf = aconf; |
548 | arec->precedence = prec_value--; | |
549 | arec->type = type; | |
550 | } | |
551 | ||
552 | /* void delete_one_address(const char*, struct ConfItem*) | |
553 | * Input: An address string, the associated ConfItem. | |
554 | * Output: None | |
555 | * Side effects: Deletes an address record. Frees the ConfItem if there | |
556 | * is nothing referencing it, sets it as illegal otherwise. | |
557 | */ | |
558 | void | |
559 | delete_one_address_conf(const char *address, struct ConfItem *aconf) | |
560 | { | |
561 | int masktype, bits; | |
562 | unsigned long hv; | |
563 | struct AddressRec *arec, *arecl = NULL; | |
e7046ee5 | 564 | struct rb_sockaddr_storage addr; |
29c92cf9 | 565 | masktype = parse_netmask(address, &addr, &bits); |
212380e3 AC |
566 | if(masktype == HM_IPV6) |
567 | { | |
568 | /* We have to do this, since we do not re-hash for every bit -A1kmm. */ | |
569 | bits -= bits % 16; | |
570 | hv = hash_ipv6((struct sockaddr *)&addr, bits); | |
571 | } | |
de293496 | 572 | else if(masktype == HM_IPV4) |
212380e3 AC |
573 | { |
574 | /* We have to do this, since we do not re-hash for every bit -A1kmm. */ | |
575 | bits -= bits % 8; | |
576 | hv = hash_ipv4((struct sockaddr *)&addr, bits); | |
577 | } | |
578 | else | |
579 | hv = get_mask_hash(address); | |
580 | for (arec = atable[hv]; arec; arec = arec->next) | |
581 | { | |
582 | if(arec->aconf == aconf) | |
583 | { | |
584 | if(arecl) | |
585 | arecl->next = arec->next; | |
586 | else | |
587 | atable[hv] = arec->next; | |
588 | aconf->status |= CONF_ILLEGAL; | |
589 | if(!aconf->clients) | |
590 | free_conf(aconf); | |
637c4932 | 591 | rb_free(arec); |
212380e3 AC |
592 | return; |
593 | } | |
594 | arecl = arec; | |
595 | } | |
596 | } | |
597 | ||
598 | /* void clear_out_address_conf(void) | |
599 | * Input: None | |
600 | * Output: None | |
601 | * Side effects: Clears out all address records in the hash table, | |
602 | * frees them, and frees the ConfItems if nothing references | |
603 | * them, otherwise sets them as illegal. | |
604 | */ | |
605 | void | |
606 | clear_out_address_conf(void) | |
607 | { | |
608 | int i; | |
609 | struct AddressRec **store_next; | |
610 | struct AddressRec *arec, *arecn; | |
611 | ||
612 | for (i = 0; i < ATABLE_SIZE; i++) | |
613 | { | |
614 | store_next = &atable[i]; | |
615 | for (arec = atable[i]; arec; arec = arecn) | |
616 | { | |
617 | arecn = arec->next; | |
618 | /* We keep the temporary K-lines and destroy the | |
619 | * permanent ones, just to be confusing :) -A1kmm */ | |
620 | if(arec->aconf->flags & CONF_FLAGS_TEMPORARY || | |
621 | (arec->type != CONF_CLIENT && arec->type != CONF_EXEMPTDLINE)) | |
622 | { | |
623 | *store_next = arec; | |
624 | store_next = &arec->next; | |
625 | } | |
626 | else | |
627 | { | |
628 | arec->aconf->status |= CONF_ILLEGAL; | |
629 | if(!arec->aconf->clients) | |
630 | free_conf(arec->aconf); | |
637c4932 | 631 | rb_free(arec); |
212380e3 AC |
632 | } |
633 | } | |
634 | *store_next = NULL; | |
635 | } | |
636 | } | |
637 | ||
638 | void | |
639 | clear_out_address_conf_bans(void) | |
640 | { | |
641 | int i; | |
642 | struct AddressRec **store_next; | |
643 | struct AddressRec *arec, *arecn; | |
644 | ||
645 | for (i = 0; i < ATABLE_SIZE; i++) | |
646 | { | |
647 | store_next = &atable[i]; | |
648 | for (arec = atable[i]; arec; arec = arecn) | |
649 | { | |
650 | arecn = arec->next; | |
651 | /* We keep the temporary K-lines and destroy the | |
652 | * permanent ones, just to be confusing :) -A1kmm */ | |
653 | if(arec->aconf->flags & CONF_FLAGS_TEMPORARY || | |
654 | (arec->type == CONF_CLIENT || arec->type == CONF_EXEMPTDLINE)) | |
655 | { | |
656 | *store_next = arec; | |
657 | store_next = &arec->next; | |
658 | } | |
659 | else | |
660 | { | |
661 | arec->aconf->status |= CONF_ILLEGAL; | |
662 | if(!arec->aconf->clients) | |
663 | free_conf(arec->aconf); | |
637c4932 | 664 | rb_free(arec); |
212380e3 AC |
665 | } |
666 | } | |
667 | *store_next = NULL; | |
668 | } | |
669 | } | |
670 | ||
671 | ||
672 | /* | |
673 | * show_iline_prefix() | |
674 | * | |
675 | * inputs - pointer to struct Client requesting output | |
55abcbb2 | 676 | * - pointer to struct ConfItem |
212380e3 AC |
677 | * - name to which iline prefix will be prefixed to |
678 | * output - pointer to static string with prefixes listed in ascii form | |
679 | * side effects - NONE | |
680 | */ | |
681 | char * | |
682 | show_iline_prefix(struct Client *sptr, struct ConfItem *aconf, char *name) | |
683 | { | |
684 | static char prefix_of_host[USERLEN + 15]; | |
685 | char *prefix_ptr; | |
686 | ||
687 | prefix_ptr = prefix_of_host; | |
688 | if(IsNoTilde(aconf)) | |
689 | *prefix_ptr++ = '-'; | |
212380e3 AC |
690 | if(IsNeedIdentd(aconf)) |
691 | *prefix_ptr++ = '+'; | |
212380e3 AC |
692 | if(IsConfDoSpoofIp(aconf)) |
693 | *prefix_ptr++ = '='; | |
c4f13a64 JT |
694 | if(IsOper(sptr) && IsConfExemptFlood(aconf)) |
695 | *prefix_ptr++ = '|'; | |
c4f13a64 JT |
696 | if(IsOper(sptr) && IsConfExemptDNSBL(aconf) && !IsConfExemptKline(aconf)) |
697 | *prefix_ptr++ = '$'; | |
a63a1eab | 698 | if(IsOper(sptr) && IsConfExemptKline(aconf)) |
212380e3 | 699 | *prefix_ptr++ = '^'; |
a63a1eab | 700 | if(IsOper(sptr) && IsConfExemptLimits(aconf)) |
212380e3 | 701 | *prefix_ptr++ = '>'; |
212380e3 AC |
702 | *prefix_ptr = '\0'; |
703 | strncpy(prefix_ptr, name, USERLEN); | |
704 | return (prefix_of_host); | |
705 | } | |
706 | ||
707 | /* report_auth() | |
708 | * | |
709 | * Inputs: pointer to client to report to | |
710 | * Output: None | |
711 | * Side effects: Reports configured auth{} blocks to client_p | |
712 | */ | |
713 | void | |
714 | report_auth(struct Client *client_p) | |
715 | { | |
29c92cf9 JB |
716 | char *name, *host, *user, *classname; |
717 | const char *pass; | |
212380e3 AC |
718 | struct AddressRec *arec; |
719 | struct ConfItem *aconf; | |
720 | int i, port; | |
721 | ||
722 | for (i = 0; i < ATABLE_SIZE; i++) | |
723 | for (arec = atable[i]; arec; arec = arec->next) | |
724 | if(arec->type == CONF_CLIENT) | |
725 | { | |
726 | aconf = arec->aconf; | |
727 | ||
a63a1eab | 728 | if(!IsOper(client_p) && IsConfDoSpoofIp(aconf)) |
212380e3 AC |
729 | continue; |
730 | ||
731 | get_printable_conf(aconf, &name, &host, &pass, &user, &port, | |
732 | &classname); | |
55abcbb2 | 733 | |
40c1fd47 VY |
734 | if(!EmptyString(aconf->spasswd)) |
735 | pass = aconf->spasswd; | |
212380e3 | 736 | |
55abcbb2 | 737 | sendto_one_numeric(client_p, RPL_STATSILINE, |
212380e3 | 738 | form_str(RPL_STATSILINE), |
40c1fd47 | 739 | name, pass, show_iline_prefix(client_p, aconf, user), |
212380e3 AC |
740 | show_ip_conf(aconf, client_p) ? host : "255.255.255.255", |
741 | port, classname); | |
742 | } | |
743 | } | |
744 |