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212380e3 AC |
1 | /* |
2 | * ircd-ratbox: A slightly useful ircd. | |
3 | * s_serv.c: Server related functions. | |
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 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 | |
22 | * USA | |
212380e3 AC |
23 | */ |
24 | ||
25 | #include "stdinc.h" | |
26 | ||
27 | #ifdef HAVE_LIBCRYPTO | |
28 | #include <openssl/rsa.h> | |
29 | #endif | |
30 | ||
212380e3 AC |
31 | #include "s_serv.h" |
32 | #include "class.h" | |
33 | #include "client.h" | |
34 | #include "common.h" | |
212380e3 | 35 | #include "hash.h" |
4562c604 | 36 | #include "match.h" |
212380e3 AC |
37 | #include "ircd.h" |
38 | #include "ircd_defs.h" | |
39 | #include "numeric.h" | |
40 | #include "packet.h" | |
212380e3 AC |
41 | #include "s_conf.h" |
42 | #include "s_newconf.h" | |
4016731b | 43 | #include "logger.h" |
212380e3 AC |
44 | #include "s_stats.h" |
45 | #include "s_user.h" | |
46 | #include "scache.h" | |
47 | #include "send.h" | |
48 | #include "client.h" | |
212380e3 AC |
49 | #include "channel.h" /* chcap_usage_counts stuff... */ |
50 | #include "hook.h" | |
51 | #include "msg.h" | |
54015b5f | 52 | #include "reject.h" |
c6d72037 | 53 | #include "sslproc.h" |
346fba92 | 54 | #include "capability.h" |
77d3d2db | 55 | #include "s_assert.h" |
212380e3 | 56 | |
212380e3 AC |
57 | #ifndef INADDR_NONE |
58 | #define INADDR_NONE ((unsigned int) 0xffffffff) | |
59 | #endif | |
60 | ||
212380e3 AC |
61 | int MaxConnectionCount = 1; |
62 | int MaxClientCount = 1; | |
63 | int refresh_user_links = 0; | |
64 | ||
65 | static char buf[BUFSIZE]; | |
66 | ||
212380e3 AC |
67 | /* |
68 | * list of recognized server capabilities. "TS" is not on the list | |
69 | * because all servers that we talk to already do TS, and the kludged | |
70 | * extra argument to "PASS" takes care of checking that. -orabidoo | |
71 | */ | |
346fba92 | 72 | struct CapabilityIndex *serv_capindex = NULL; |
486cd344 | 73 | struct CapabilityIndex *cli_capindex = NULL; |
346fba92 AC |
74 | |
75 | unsigned int CAP_CAP; | |
76 | unsigned int CAP_QS; | |
77 | unsigned int CAP_EX; | |
78 | unsigned int CAP_CHW; | |
79 | unsigned int CAP_IE; | |
80 | unsigned int CAP_KLN; | |
81 | unsigned int CAP_ZIP; | |
82 | unsigned int CAP_KNOCK; | |
83 | unsigned int CAP_TB; | |
84 | unsigned int CAP_UNKLN; | |
85 | unsigned int CAP_CLUSTER; | |
86 | unsigned int CAP_ENCAP; | |
87 | unsigned int CAP_TS6; | |
88 | unsigned int CAP_SERVICE; | |
89 | unsigned int CAP_RSFNC; | |
90 | unsigned int CAP_SAVE; | |
91 | unsigned int CAP_EUID; | |
92 | unsigned int CAP_EOPMOD; | |
93 | unsigned int CAP_BAN; | |
94 | unsigned int CAP_MLOCK; | |
95 | ||
32df5e96 | 96 | unsigned int CLICAP_MULTI_PREFIX; |
32df5e96 AC |
97 | unsigned int CLICAP_ACCOUNT_NOTIFY; |
98 | unsigned int CLICAP_EXTENDED_JOIN; | |
99 | unsigned int CLICAP_AWAY_NOTIFY; | |
32df5e96 AC |
100 | unsigned int CLICAP_USERHOST_IN_NAMES; |
101 | unsigned int CLICAP_CAP_NOTIFY; | |
102 | unsigned int CLICAP_CHGHOST; | |
be2ce24c | 103 | unsigned int CLICAP_ECHO_MESSAGE; |
32df5e96 | 104 | |
346fba92 AC |
105 | /* |
106 | * initialize our builtin capability table. --nenolod | |
107 | */ | |
108 | void | |
109 | init_builtin_capabs(void) | |
110 | { | |
885cd603 | 111 | serv_capindex = capability_index_create("server capabilities"); |
346fba92 | 112 | |
22cae20f JT |
113 | /* These two are not set via CAPAB/GCAP keywords. */ |
114 | CAP_CAP = capability_put_anonymous(serv_capindex); | |
115 | CAP_TS6 = capability_put_anonymous(serv_capindex); | |
116 | ||
486cd344 AC |
117 | CAP_QS = capability_put(serv_capindex, "QS", NULL); |
118 | CAP_EX = capability_put(serv_capindex, "EX", NULL); | |
119 | CAP_CHW = capability_put(serv_capindex, "CHW", NULL); | |
120 | CAP_IE = capability_put(serv_capindex, "IE", NULL); | |
121 | CAP_KLN = capability_put(serv_capindex, "KLN", NULL); | |
122 | CAP_KNOCK = capability_put(serv_capindex, "KNOCK", NULL); | |
123 | CAP_ZIP = capability_put(serv_capindex, "ZIP", NULL); | |
124 | CAP_TB = capability_put(serv_capindex, "TB", NULL); | |
125 | CAP_UNKLN = capability_put(serv_capindex, "UNKLN", NULL); | |
126 | CAP_CLUSTER = capability_put(serv_capindex, "CLUSTER", NULL); | |
127 | CAP_ENCAP = capability_put(serv_capindex, "ENCAP", NULL); | |
128 | CAP_SERVICE = capability_put(serv_capindex, "SERVICES", NULL); | |
129 | CAP_RSFNC = capability_put(serv_capindex, "RSFNC", NULL); | |
130 | CAP_SAVE = capability_put(serv_capindex, "SAVE", NULL); | |
131 | CAP_EUID = capability_put(serv_capindex, "EUID", NULL); | |
132 | CAP_EOPMOD = capability_put(serv_capindex, "EOPMOD", NULL); | |
133 | CAP_BAN = capability_put(serv_capindex, "BAN", NULL); | |
134 | CAP_MLOCK = capability_put(serv_capindex, "MLOCK", NULL); | |
58b60c20 JT |
135 | |
136 | capability_require(serv_capindex, "QS"); | |
d0c2fc82 JT |
137 | capability_require(serv_capindex, "EX"); |
138 | capability_require(serv_capindex, "IE"); | |
58b60c20 | 139 | capability_require(serv_capindex, "ENCAP"); |
486cd344 AC |
140 | |
141 | cli_capindex = capability_index_create("client capabilities"); | |
32df5e96 AC |
142 | |
143 | CLICAP_MULTI_PREFIX = capability_put(cli_capindex, "multi-prefix", NULL); | |
32df5e96 AC |
144 | CLICAP_ACCOUNT_NOTIFY = capability_put(cli_capindex, "account-notify", NULL); |
145 | CLICAP_EXTENDED_JOIN = capability_put(cli_capindex, "extended-join", NULL); | |
146 | CLICAP_AWAY_NOTIFY = capability_put(cli_capindex, "away-notify", NULL); | |
32df5e96 AC |
147 | CLICAP_USERHOST_IN_NAMES = capability_put(cli_capindex, "userhost-in-names", NULL); |
148 | CLICAP_CAP_NOTIFY = capability_put(cli_capindex, "cap-notify", NULL); | |
149 | CLICAP_CHGHOST = capability_put(cli_capindex, "chghost", NULL); | |
be2ce24c | 150 | CLICAP_ECHO_MESSAGE = capability_put(cli_capindex, "echo-message", NULL); |
346fba92 | 151 | } |
212380e3 | 152 | |
212380e3 | 153 | static CNCB serv_connect_callback; |
c6d72037 | 154 | static CNCB serv_connect_ssl_callback; |
212380e3 AC |
155 | |
156 | /* | |
157 | * hunt_server - Do the basic thing in delivering the message (command) | |
158 | * across the relays to the specific server (server) for | |
159 | * actions. | |
160 | * | |
161 | * Note: The command is a format string and *MUST* be | |
162 | * of prefixed style (e.g. ":%s COMMAND %s ..."). | |
163 | * Command can have only max 8 parameters. | |
164 | * | |
165 | * server parv[server] is the parameter identifying the | |
166 | * target server. | |
167 | * | |
168 | * *WARNING* | |
169 | * parv[server] is replaced with the pointer to the | |
170 | * real servername from the matched client (I'm lazy | |
171 | * now --msa). | |
172 | * | |
173 | * returns: (see #defines) | |
174 | */ | |
175 | int | |
176 | hunt_server(struct Client *client_p, struct Client *source_p, | |
177 | const char *command, int server, int parc, const char *parv[]) | |
178 | { | |
179 | struct Client *target_p; | |
180 | int wilds; | |
330fc5c1 | 181 | rb_dlink_node *ptr; |
212380e3 AC |
182 | const char *old; |
183 | char *new; | |
184 | ||
185 | /* | |
186 | * Assume it's me, if no server | |
187 | */ | |
188 | if(parc <= server || EmptyString(parv[server]) || | |
4d7a1ee5 | 189 | match(parv[server], me.name) || (strcmp(parv[server], me.id) == 0)) |
212380e3 | 190 | return (HUNTED_ISME); |
346fba92 | 191 | |
212380e3 AC |
192 | new = LOCAL_COPY(parv[server]); |
193 | ||
194 | /* | |
195 | * These are to pickup matches that would cause the following | |
196 | * message to go in the wrong direction while doing quick fast | |
197 | * non-matching lookups. | |
198 | */ | |
199 | if(MyClient(source_p)) | |
200 | target_p = find_named_client(new); | |
201 | else | |
202 | target_p = find_client(new); | |
203 | ||
204 | if(target_p) | |
205 | if(target_p->from == source_p->from && !MyConnect(target_p)) | |
206 | target_p = NULL; | |
207 | ||
212380e3 AC |
208 | collapse(new); |
209 | wilds = (strchr(new, '?') || strchr(new, '*')); | |
210 | ||
211 | /* | |
212 | * Again, if there are no wild cards involved in the server | |
213 | * name, use the hash lookup | |
214 | */ | |
cd300c1b | 215 | if(!target_p && wilds) |
212380e3 | 216 | { |
2fb07961 | 217 | RB_DLINK_FOREACH(ptr, global_serv_list.head) |
212380e3 | 218 | { |
cd300c1b | 219 | if(match(new, ((struct Client *) (ptr->data))->name)) |
212380e3 | 220 | { |
cd300c1b JT |
221 | target_p = ptr->data; |
222 | break; | |
212380e3 AC |
223 | } |
224 | } | |
225 | } | |
226 | ||
cd300c1b JT |
227 | if(target_p && !IsRegistered(target_p)) |
228 | target_p = NULL; | |
229 | ||
212380e3 AC |
230 | if(target_p) |
231 | { | |
212380e3 AC |
232 | if(IsMe(target_p) || MyClient(target_p)) |
233 | return HUNTED_ISME; | |
234 | ||
235 | old = parv[server]; | |
236 | parv[server] = get_id(target_p, target_p); | |
237 | ||
238 | sendto_one(target_p, command, get_id(source_p, target_p), | |
239 | parv[1], parv[2], parv[3], parv[4], parv[5], parv[6], parv[7], parv[8]); | |
240 | parv[server] = old; | |
241 | return (HUNTED_PASS); | |
242 | } | |
243 | ||
95d36ef5 | 244 | if(MyClient(source_p) || !IsDigit(parv[server][0])) |
212380e3 AC |
245 | sendto_one_numeric(source_p, ERR_NOSUCHSERVER, |
246 | form_str(ERR_NOSUCHSERVER), parv[server]); | |
247 | return (HUNTED_NOSUCH); | |
248 | } | |
249 | ||
250 | /* | |
251 | * try_connections - scan through configuration and try new connections. | |
252 | * Returns the calendar time when the next call to this | |
253 | * function should be made latest. (No harm done if this | |
254 | * is called earlier or later...) | |
255 | */ | |
256 | void | |
257 | try_connections(void *unused) | |
258 | { | |
259 | struct Client *client_p; | |
260 | struct server_conf *server_p = NULL; | |
261 | struct server_conf *tmp_p; | |
262 | struct Class *cltmp; | |
330fc5c1 | 263 | rb_dlink_node *ptr; |
07554369 | 264 | bool connecting = false; |
212380e3 AC |
265 | int confrq = 0; |
266 | time_t next = 0; | |
267 | ||
5cefa1d6 | 268 | RB_DLINK_FOREACH(ptr, server_conf_list.head) |
212380e3 AC |
269 | { |
270 | tmp_p = ptr->data; | |
271 | ||
272 | if(ServerConfIllegal(tmp_p) || !ServerConfAutoconn(tmp_p)) | |
273 | continue; | |
274 | ||
f4a759c5 | 275 | /* don't allow ssl connections if ssl isn't setup */ |
bfc44622 | 276 | if(ServerConfSSL(tmp_p) && (!ircd_ssl_ok || !get_ssld_count())) |
c6d72037 VY |
277 | continue; |
278 | ||
212380e3 AC |
279 | cltmp = tmp_p->class; |
280 | ||
281 | /* | |
282 | * Skip this entry if the use of it is still on hold until | |
283 | * future. Otherwise handle this entry (and set it on hold | |
284 | * until next time). Will reset only hold times, if already | |
285 | * made one successfull connection... [this algorithm is | |
286 | * a bit fuzzy... -- msa >;) ] | |
287 | */ | |
e3354945 | 288 | if(tmp_p->hold > rb_current_time()) |
212380e3 AC |
289 | { |
290 | if(next > tmp_p->hold || next == 0) | |
291 | next = tmp_p->hold; | |
292 | continue; | |
293 | } | |
294 | ||
295 | confrq = get_con_freq(cltmp); | |
e3354945 | 296 | tmp_p->hold = rb_current_time() + confrq; |
212380e3 AC |
297 | |
298 | /* | |
299 | * Found a CONNECT config with port specified, scan clients | |
300 | * and see if this server is already connected? | |
301 | */ | |
302 | client_p = find_server(NULL, tmp_p->name); | |
303 | ||
304 | if(!client_p && (CurrUsers(cltmp) < MaxUsers(cltmp)) && !connecting) | |
305 | { | |
306 | server_p = tmp_p; | |
307 | ||
308 | /* We connect only one at time... */ | |
07554369 | 309 | connecting = true; |
212380e3 AC |
310 | } |
311 | ||
312 | if((next > tmp_p->hold) || (next == 0)) | |
313 | next = tmp_p->hold; | |
314 | } | |
315 | ||
316 | /* TODO: change this to set active flag to 0 when added to event! --Habeeb */ | |
317 | if(GlobalSetOptions.autoconn == 0) | |
318 | return; | |
319 | ||
320 | if(!connecting) | |
321 | return; | |
322 | ||
323 | /* move this connect entry to end.. */ | |
330fc5c1 AC |
324 | rb_dlinkDelete(&server_p->node, &server_conf_list); |
325 | rb_dlinkAddTail(server_p, &server_p->node, &server_conf_list); | |
212380e3 AC |
326 | |
327 | /* | |
328 | * We used to only print this if serv_connect() actually | |
b2f0da88 | 329 | * suceeded, but since rb_tcp_connect() can call the callback |
212380e3 AC |
330 | * immediately if there is an error, we were getting error messages |
331 | * in the wrong order. SO, we just print out the activated line, | |
332 | * and let serv_connect() / serv_connect_callback() print an | |
333 | * error afterwards if it fails. | |
334 | * -- adrian | |
335 | */ | |
212380e3 AC |
336 | sendto_realops_snomask(SNO_GENERAL, L_ALL, |
337 | "Connection to %s activated", | |
338 | server_p->name); | |
212380e3 AC |
339 | |
340 | serv_connect(server_p, 0); | |
341 | } | |
342 | ||
343 | int | |
344 | check_server(const char *name, struct Client *client_p) | |
345 | { | |
346 | struct server_conf *server_p = NULL; | |
347 | struct server_conf *tmp_p; | |
330fc5c1 | 348 | rb_dlink_node *ptr; |
212380e3 | 349 | int error = -1; |
e69375f3 | 350 | const char *encr; |
212380e3 AC |
351 | |
352 | s_assert(NULL != client_p); | |
353 | if(client_p == NULL) | |
354 | return error; | |
355 | ||
356 | if(!(client_p->localClient->passwd)) | |
357 | return -2; | |
358 | ||
359 | if(strlen(name) > HOSTLEN) | |
360 | return -4; | |
361 | ||
5cefa1d6 | 362 | RB_DLINK_FOREACH(ptr, server_conf_list.head) |
212380e3 AC |
363 | { |
364 | tmp_p = ptr->data; | |
365 | ||
366 | if(ServerConfIllegal(tmp_p)) | |
367 | continue; | |
368 | ||
369 | if(!match(tmp_p->name, name)) | |
370 | continue; | |
371 | ||
372 | error = -3; | |
373 | ||
374 | /* XXX: Fix me for IPv6 */ | |
375 | /* XXX sockhost is the IPv4 ip as a string */ | |
376 | if(match(tmp_p->host, client_p->host) || | |
377 | match(tmp_p->host, client_p->sockhost)) | |
378 | { | |
379 | error = -2; | |
380 | ||
ff0cc1e6 | 381 | if(tmp_p->passwd) |
212380e3 | 382 | { |
ff0cc1e6 | 383 | if(ServerConfEncrypted(tmp_p)) |
212380e3 | 384 | { |
e69375f3 JT |
385 | encr = rb_crypt(client_p->localClient->passwd, |
386 | tmp_p->passwd); | |
387 | if(encr != NULL && !strcmp(tmp_p->passwd, encr)) | |
ff0cc1e6 AC |
388 | { |
389 | server_p = tmp_p; | |
390 | break; | |
391 | } | |
392 | else | |
393 | continue; | |
212380e3 | 394 | } |
ff0cc1e6 AC |
395 | else if(strcmp(tmp_p->passwd, client_p->localClient->passwd)) |
396 | continue; | |
212380e3 | 397 | } |
ff0cc1e6 AC |
398 | |
399 | if(tmp_p->certfp) | |
212380e3 | 400 | { |
ff0cc1e6 AC |
401 | if(!client_p->certfp || strcasecmp(tmp_p->certfp, client_p->certfp) != 0) |
402 | continue; | |
212380e3 | 403 | } |
ff0cc1e6 AC |
404 | |
405 | server_p = tmp_p; | |
406 | break; | |
212380e3 AC |
407 | } |
408 | } | |
409 | ||
410 | if(server_p == NULL) | |
411 | return error; | |
412 | ||
f4a759c5 VY |
413 | if(ServerConfSSL(server_p) && client_p->localClient->ssl_ctl == NULL) |
414 | { | |
415 | return -5; | |
c6d72037 VY |
416 | } |
417 | ||
212380e3 AC |
418 | attach_server_conf(client_p, server_p); |
419 | ||
420 | /* clear ZIP/TB if they support but we dont want them */ | |
421 | #ifdef HAVE_LIBZ | |
422 | if(!ServerConfCompressed(server_p)) | |
423 | #endif | |
424 | ClearCap(client_p, CAP_ZIP); | |
425 | ||
426 | if(!ServerConfTb(server_p)) | |
427 | ClearCap(client_p, CAP_TB); | |
428 | ||
429 | return 0; | |
430 | } | |
431 | ||
432 | /* | |
433 | * send_capabilities | |
434 | * | |
435 | * inputs - Client pointer to send to | |
436 | * - int flag of capabilities that this server has | |
437 | * output - NONE | |
438 | * side effects - send the CAPAB line to a server -orabidoo | |
212380e3 AC |
439 | */ |
440 | void | |
346fba92 | 441 | send_capabilities(struct Client *client_p, unsigned int cap_can_send) |
212380e3 | 442 | { |
346fba92 | 443 | sendto_one(client_p, "CAPAB :%s", capability_index_list(serv_capindex, cap_can_send)); |
212380e3 AC |
444 | } |
445 | ||
431a1a27 JT |
446 | static void |
447 | burst_ban(struct Client *client_p) | |
448 | { | |
449 | rb_dlink_node *ptr; | |
450 | struct ConfItem *aconf; | |
451 | const char *type, *oper; | |
452 | /* +5 for !,@,{,} and null */ | |
453 | char operbuf[NICKLEN + USERLEN + HOSTLEN + HOSTLEN + 5]; | |
454 | char *p; | |
455 | size_t melen; | |
456 | ||
457 | melen = strlen(me.name); | |
458 | RB_DLINK_FOREACH(ptr, prop_bans.head) | |
459 | { | |
460 | aconf = ptr->data; | |
461 | ||
462 | /* Skip expired stuff. */ | |
463 | if(aconf->lifetime < rb_current_time()) | |
464 | continue; | |
465 | switch(aconf->status & ~CONF_ILLEGAL) | |
466 | { | |
467 | case CONF_KILL: type = "K"; break; | |
468 | case CONF_DLINE: type = "D"; break; | |
469 | case CONF_XLINE: type = "X"; break; | |
470 | case CONF_RESV_NICK: type = "R"; break; | |
471 | case CONF_RESV_CHANNEL: type = "R"; break; | |
472 | default: | |
473 | continue; | |
474 | } | |
475 | oper = aconf->info.oper; | |
476 | if(aconf->flags & CONF_FLAGS_MYOPER) | |
477 | { | |
478 | /* Our operator{} names may not be meaningful | |
479 | * to other servers, so rewrite to our server | |
480 | * name. | |
481 | */ | |
482 | rb_strlcpy(operbuf, aconf->info.oper, sizeof buf); | |
483 | p = strrchr(operbuf, '{'); | |
ee6da53d JT |
484 | if (p != NULL && |
485 | operbuf + sizeof operbuf - p > (ptrdiff_t)(melen + 2)) | |
431a1a27 JT |
486 | { |
487 | memcpy(p + 1, me.name, melen); | |
488 | p[melen + 1] = '}'; | |
489 | p[melen + 2] = '\0'; | |
490 | oper = operbuf; | |
491 | } | |
492 | } | |
cedb7d05 | 493 | sendto_one(client_p, ":%s BAN %s %s %s %lu %d %d %s :%s%s%s", |
431a1a27 | 494 | me.id, |
431a1a27 JT |
495 | type, |
496 | aconf->user ? aconf->user : "*", aconf->host, | |
497 | (unsigned long)aconf->created, | |
498 | (int)(aconf->hold - aconf->created), | |
499 | (int)(aconf->lifetime - aconf->created), | |
500 | oper, | |
501 | aconf->passwd, | |
502 | aconf->spasswd ? "|" : "", | |
503 | aconf->spasswd ? aconf->spasswd : ""); | |
504 | } | |
505 | } | |
506 | ||
212380e3 AC |
507 | /* burst_modes_TS6() |
508 | * | |
509 | * input - client to burst to, channel name, list to burst, mode flag | |
510 | * output - | |
511 | * side effects - client is sent a list of +b, +e, or +I modes | |
512 | */ | |
513 | static void | |
55abcbb2 | 514 | burst_modes_TS6(struct Client *client_p, struct Channel *chptr, |
330fc5c1 | 515 | rb_dlink_list *list, char flag) |
212380e3 | 516 | { |
330fc5c1 | 517 | rb_dlink_node *ptr; |
212380e3 AC |
518 | struct Ban *banptr; |
519 | char *t; | |
520 | int tlen; | |
521 | int mlen; | |
522 | int cur_len; | |
523 | ||
5203cba5 | 524 | cur_len = mlen = sprintf(buf, ":%s BMASK %ld %s %c :", |
212380e3 AC |
525 | me.id, (long) chptr->channelts, chptr->chname, flag); |
526 | t = buf + mlen; | |
527 | ||
5cefa1d6 | 528 | RB_DLINK_FOREACH(ptr, list->head) |
212380e3 AC |
529 | { |
530 | banptr = ptr->data; | |
531 | ||
7f0fc87d | 532 | tlen = strlen(banptr->banstr) + (banptr->forward ? strlen(banptr->forward) + 1 : 0) + 1; |
212380e3 AC |
533 | |
534 | /* uh oh */ | |
535 | if(cur_len + tlen > BUFSIZE - 3) | |
536 | { | |
537 | /* the one we're trying to send doesnt fit at all! */ | |
538 | if(cur_len == mlen) | |
539 | { | |
540 | s_assert(0); | |
541 | continue; | |
542 | } | |
543 | ||
544 | /* chop off trailing space and send.. */ | |
545 | *(t-1) = '\0'; | |
546 | sendto_one(client_p, "%s", buf); | |
547 | cur_len = mlen; | |
548 | t = buf + mlen; | |
549 | } | |
550 | ||
7f0fc87d | 551 | if (banptr->forward) |
5203cba5 | 552 | sprintf(t, "%s$%s ", banptr->banstr, banptr->forward); |
7f0fc87d | 553 | else |
5203cba5 | 554 | sprintf(t, "%s ", banptr->banstr); |
212380e3 AC |
555 | t += tlen; |
556 | cur_len += tlen; | |
557 | } | |
558 | ||
559 | /* cant ever exit the loop above without having modified buf, | |
560 | * chop off trailing space and send. | |
561 | */ | |
562 | *(t-1) = '\0'; | |
563 | sendto_one(client_p, "%s", buf); | |
564 | } | |
565 | ||
212380e3 AC |
566 | /* |
567 | * burst_TS6 | |
55abcbb2 | 568 | * |
212380e3 AC |
569 | * inputs - client (server) to send nick towards |
570 | * - client to send nick for | |
571 | * output - NONE | |
572 | * side effects - NICK message is sent towards given client_p | |
573 | */ | |
574 | static void | |
575 | burst_TS6(struct Client *client_p) | |
576 | { | |
9744d53e | 577 | char ubuf[BUFSIZE]; |
212380e3 AC |
578 | struct Client *target_p; |
579 | struct Channel *chptr; | |
580 | struct membership *msptr; | |
581 | hook_data_client hclientinfo; | |
582 | hook_data_channel hchaninfo; | |
330fc5c1 AC |
583 | rb_dlink_node *ptr; |
584 | rb_dlink_node *uptr; | |
212380e3 AC |
585 | char *t; |
586 | int tlen, mlen; | |
587 | int cur_len = 0; | |
588 | ||
589 | hclientinfo.client = hchaninfo.client = client_p; | |
590 | ||
5cefa1d6 | 591 | RB_DLINK_FOREACH(ptr, global_client_list.head) |
212380e3 AC |
592 | { |
593 | target_p = ptr->data; | |
594 | ||
595 | if(!IsPerson(target_p)) | |
596 | continue; | |
597 | ||
29c92cf9 | 598 | send_umode(NULL, target_p, 0, ubuf); |
212380e3 AC |
599 | if(!*ubuf) |
600 | { | |
601 | ubuf[0] = '+'; | |
602 | ubuf[1] = '\0'; | |
603 | } | |
604 | ||
bea2295f | 605 | if(IsCapable(client_p, CAP_EUID)) |
212380e3 AC |
606 | sendto_one(client_p, ":%s EUID %s %d %ld %s %s %s %s %s %s %s :%s", |
607 | target_p->servptr->id, target_p->name, | |
55abcbb2 | 608 | target_p->hopcount + 1, |
212380e3 AC |
609 | (long) target_p->tsinfo, ubuf, |
610 | target_p->username, target_p->host, | |
611 | IsIPSpoof(target_p) ? "0" : target_p->sockhost, | |
612 | target_p->id, | |
613 | IsDynSpoof(target_p) ? target_p->orighost : "*", | |
614 | EmptyString(target_p->user->suser) ? "*" : target_p->user->suser, | |
615 | target_p->info); | |
bea2295f | 616 | else |
212380e3 AC |
617 | sendto_one(client_p, ":%s UID %s %d %ld %s %s %s %s %s :%s", |
618 | target_p->servptr->id, target_p->name, | |
55abcbb2 | 619 | target_p->hopcount + 1, |
212380e3 AC |
620 | (long) target_p->tsinfo, ubuf, |
621 | target_p->username, target_p->host, | |
622 | IsIPSpoof(target_p) ? "0" : target_p->sockhost, | |
623 | target_p->id, target_p->info); | |
bea2295f | 624 | |
8eda114a JT |
625 | if(!EmptyString(target_p->certfp)) |
626 | sendto_one(client_p, ":%s ENCAP * CERTFP :%s", | |
627 | use_id(target_p), target_p->certfp); | |
628 | ||
bea2295f | 629 | if(!IsCapable(client_p, CAP_EUID)) |
212380e3 AC |
630 | { |
631 | if(IsDynSpoof(target_p)) | |
632 | sendto_one(client_p, ":%s ENCAP * REALHOST %s", | |
633 | use_id(target_p), target_p->orighost); | |
634 | if(!EmptyString(target_p->user->suser)) | |
635 | sendto_one(client_p, ":%s ENCAP * LOGIN %s", | |
636 | use_id(target_p), target_p->user->suser); | |
637 | } | |
638 | ||
c127b45b | 639 | if(ConfigFileEntry.burst_away && !EmptyString(target_p->user->away)) |
212380e3 AC |
640 | sendto_one(client_p, ":%s AWAY :%s", |
641 | use_id(target_p), | |
c127b45b | 642 | target_p->user->away); |
212380e3 AC |
643 | |
644 | hclientinfo.target = target_p; | |
645 | call_hook(h_burst_client, &hclientinfo); | |
646 | } | |
647 | ||
5cefa1d6 | 648 | RB_DLINK_FOREACH(ptr, global_channel_list.head) |
212380e3 AC |
649 | { |
650 | chptr = ptr->data; | |
651 | ||
652 | if(*chptr->chname != '#') | |
653 | continue; | |
654 | ||
5203cba5 | 655 | cur_len = mlen = sprintf(buf, ":%s SJOIN %ld %s %s :", me.id, |
212380e3 AC |
656 | (long) chptr->channelts, chptr->chname, |
657 | channel_modes(chptr, client_p)); | |
658 | ||
659 | t = buf + mlen; | |
660 | ||
5cefa1d6 | 661 | RB_DLINK_FOREACH(uptr, chptr->members.head) |
212380e3 AC |
662 | { |
663 | msptr = uptr->data; | |
664 | ||
665 | tlen = strlen(use_id(msptr->client_p)) + 1; | |
666 | if(is_chanop(msptr)) | |
667 | tlen++; | |
668 | if(is_voiced(msptr)) | |
669 | tlen++; | |
670 | ||
671 | if(cur_len + tlen >= BUFSIZE - 3) | |
672 | { | |
673 | *(t-1) = '\0'; | |
674 | sendto_one(client_p, "%s", buf); | |
675 | cur_len = mlen; | |
676 | t = buf + mlen; | |
677 | } | |
678 | ||
5203cba5 | 679 | sprintf(t, "%s%s ", find_channel_status(msptr, 1), |
212380e3 AC |
680 | use_id(msptr->client_p)); |
681 | ||
682 | cur_len += tlen; | |
683 | t += tlen; | |
684 | } | |
685 | ||
330fc5c1 | 686 | if (rb_dlink_list_length(&chptr->members) > 0) |
212380e3 AC |
687 | { |
688 | /* remove trailing space */ | |
689 | *(t-1) = '\0'; | |
690 | } | |
691 | sendto_one(client_p, "%s", buf); | |
692 | ||
330fc5c1 | 693 | if(rb_dlink_list_length(&chptr->banlist) > 0) |
212380e3 AC |
694 | burst_modes_TS6(client_p, chptr, &chptr->banlist, 'b'); |
695 | ||
696 | if(IsCapable(client_p, CAP_EX) && | |
330fc5c1 | 697 | rb_dlink_list_length(&chptr->exceptlist) > 0) |
212380e3 AC |
698 | burst_modes_TS6(client_p, chptr, &chptr->exceptlist, 'e'); |
699 | ||
700 | if(IsCapable(client_p, CAP_IE) && | |
330fc5c1 | 701 | rb_dlink_list_length(&chptr->invexlist) > 0) |
212380e3 AC |
702 | burst_modes_TS6(client_p, chptr, &chptr->invexlist, 'I'); |
703 | ||
330fc5c1 | 704 | if(rb_dlink_list_length(&chptr->quietlist) > 0) |
212380e3 AC |
705 | burst_modes_TS6(client_p, chptr, &chptr->quietlist, 'q'); |
706 | ||
707 | if(IsCapable(client_p, CAP_TB) && chptr->topic != NULL) | |
708 | sendto_one(client_p, ":%s TB %s %ld %s%s:%s", | |
709 | me.id, chptr->chname, (long) chptr->topic_time, | |
710 | ConfigChannel.burst_topicwho ? chptr->topic_info : "", | |
711 | ConfigChannel.burst_topicwho ? " " : "", | |
712 | chptr->topic); | |
713 | ||
084ecbe0 | 714 | if(IsCapable(client_p, CAP_MLOCK)) |
6b8db2da | 715 | sendto_one(client_p, ":%s MLOCK %ld %s :%s", |
084ecbe0 | 716 | me.id, (long) chptr->channelts, chptr->chname, |
6b8db2da | 717 | EmptyString(chptr->mode_lock) ? "" : chptr->mode_lock); |
084ecbe0 | 718 | |
212380e3 AC |
719 | hchaninfo.chptr = chptr; |
720 | call_hook(h_burst_channel, &hchaninfo); | |
721 | } | |
722 | ||
723 | hclientinfo.target = NULL; | |
724 | call_hook(h_burst_finished, &hclientinfo); | |
725 | } | |
726 | ||
727 | /* | |
728 | * show_capabilities - show current server capabilities | |
729 | * | |
730 | * inputs - pointer to an struct Client | |
731 | * output - pointer to static string | |
732 | * side effects - build up string representing capabilities of server listed | |
733 | */ | |
734 | const char * | |
735 | show_capabilities(struct Client *target_p) | |
736 | { | |
737 | static char msgbuf[BUFSIZE]; | |
346fba92 AC |
738 | |
739 | *msgbuf = '\0'; | |
212380e3 | 740 | |
f4a759c5 VY |
741 | if(has_id(target_p)) |
742 | rb_strlcpy(msgbuf, " TS6", sizeof(msgbuf)); | |
f4a759c5 VY |
743 | |
744 | if(IsSSL(target_p)) | |
745 | rb_strlcat(msgbuf, " SSL", sizeof(msgbuf)); | |
212380e3 AC |
746 | |
747 | if(!IsServer(target_p) || !target_p->serv->caps) /* short circuit if no caps */ | |
f4a759c5 | 748 | return msgbuf + 1; |
212380e3 | 749 | |
89fd463e | 750 | rb_strlcat(msgbuf, " ", sizeof(msgbuf)); |
346fba92 | 751 | rb_strlcat(msgbuf, capability_index_list(serv_capindex, target_p->serv->caps), sizeof(msgbuf)); |
212380e3 | 752 | |
f4a759c5 | 753 | return msgbuf + 1; |
212380e3 AC |
754 | } |
755 | ||
756 | /* | |
757 | * server_estab | |
758 | * | |
759 | * inputs - pointer to a struct Client | |
760 | * output - | |
761 | * side effects - | |
762 | */ | |
763 | int | |
764 | server_estab(struct Client *client_p) | |
765 | { | |
766 | struct Client *target_p; | |
767 | struct server_conf *server_p; | |
768 | hook_data_client hdata; | |
769 | char *host; | |
330fc5c1 | 770 | rb_dlink_node *ptr; |
6c528b8e | 771 | char note[HOSTLEN + 15]; |
212380e3 AC |
772 | |
773 | s_assert(NULL != client_p); | |
774 | if(client_p == NULL) | |
775 | return -1; | |
212380e3 AC |
776 | |
777 | host = client_p->name; | |
778 | ||
779 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
780 | { | |
781 | /* This shouldn't happen, better tell the ops... -A1kmm */ | |
782 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
783 | "Warning: Lost connect{} block for server %s!", host); | |
784 | return exit_client(client_p, client_p, client_p, "Lost connect{} block!"); | |
785 | } | |
786 | ||
787 | /* We shouldn't have to check this, it should already done before | |
788 | * server_estab is called. -A1kmm | |
789 | */ | |
790 | if(client_p->localClient->passwd) | |
791 | { | |
792 | memset(client_p->localClient->passwd, 0, strlen(client_p->localClient->passwd)); | |
637c4932 | 793 | rb_free(client_p->localClient->passwd); |
212380e3 AC |
794 | client_p->localClient->passwd = NULL; |
795 | } | |
796 | ||
797 | /* Its got identd , since its a server */ | |
798 | SetGotId(client_p); | |
799 | ||
212380e3 AC |
800 | if(IsUnknown(client_p)) |
801 | { | |
ff0cc1e6 | 802 | /* the server may be linking based on certificate fingerprint now. --nenolod */ |
55abcbb2 | 803 | sendto_one(client_p, "PASS %s TS %d :%s", |
ff0cc1e6 | 804 | EmptyString(server_p->spasswd) ? "*" : server_p->spasswd, TS_CURRENT, me.id); |
212380e3 AC |
805 | |
806 | /* pass info to new server */ | |
807 | send_capabilities(client_p, default_server_capabs | |
808 | | (ServerConfCompressed(server_p) ? CAP_ZIP_SUPPORTED : 0) | |
809 | | (ServerConfTb(server_p) ? CAP_TB : 0)); | |
810 | ||
811 | sendto_one(client_p, "SERVER %s 1 :%s%s", | |
812 | me.name, | |
813 | ConfigServerHide.hidden ? "(H) " : "", | |
814 | (me.info[0]) ? (me.info) : "IRCers United"); | |
815 | } | |
816 | ||
6c528b8e | 817 | if(!rb_set_buffers(client_p->localClient->F, READBUF_SIZE)) |
825ddf13 | 818 | ilog_error("rb_set_buffers failed for server"); |
212380e3 | 819 | |
c6d72037 | 820 | /* Enable compression now */ |
f4a759c5 VY |
821 | if(IsCapable(client_p, CAP_ZIP)) |
822 | { | |
823 | start_zlib_session(client_p); | |
824 | } | |
8982edb0 | 825 | sendto_one(client_p, "SVINFO %d %d 0 :%ld", TS_CURRENT, TS_MIN, (long int)rb_current_time()); |
212380e3 AC |
826 | |
827 | client_p->servptr = &me; | |
828 | ||
829 | if(IsAnyDead(client_p)) | |
830 | return CLIENT_EXITED; | |
831 | ||
832 | SetServer(client_p); | |
833 | ||
330fc5c1 | 834 | rb_dlinkAdd(client_p, &client_p->lnode, &me.serv->servers); |
330fc5c1 AC |
835 | rb_dlinkMoveNode(&client_p->localClient->tnode, &unknown_list, &serv_list); |
836 | rb_dlinkAddTailAlloc(client_p, &global_serv_list); | |
212380e3 AC |
837 | |
838 | if(has_id(client_p)) | |
839 | add_to_id_hash(client_p->id, client_p); | |
840 | ||
841 | add_to_client_hash(client_p->name, client_p); | |
842 | /* doesnt duplicate client_p->serv if allocated this struct already */ | |
843 | make_server(client_p); | |
212380e3 AC |
844 | |
845 | client_p->serv->caps = client_p->localClient->caps; | |
846 | ||
847 | if(client_p->localClient->fullcaps) | |
848 | { | |
47a03750 | 849 | client_p->serv->fullcaps = rb_strdup(client_p->localClient->fullcaps); |
637c4932 | 850 | rb_free(client_p->localClient->fullcaps); |
212380e3 AC |
851 | client_p->localClient->fullcaps = NULL; |
852 | } | |
853 | ||
994544c2 | 854 | client_p->serv->nameinfo = scache_connect(client_p->name, client_p->info, IsHidden(client_p)); |
e3354945 | 855 | client_p->localClient->firsttime = rb_current_time(); |
212380e3 AC |
856 | /* fixing eob timings.. -gnp */ |
857 | ||
330fc5c1 | 858 | if((rb_dlink_list_length(&lclient_list) + rb_dlink_list_length(&serv_list)) > |
2f15f871 | 859 | (unsigned long)MaxConnectionCount) |
55abcbb2 | 860 | MaxConnectionCount = rb_dlink_list_length(&lclient_list) + |
330fc5c1 | 861 | rb_dlink_list_length(&serv_list); |
2f15f871 | 862 | |
212380e3 AC |
863 | /* Show the real host/IP to admins */ |
864 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
865 | "Link with %s established: (%s) link", | |
b3ebc7ab | 866 | client_p->name, |
212380e3 AC |
867 | show_capabilities(client_p)); |
868 | ||
869 | ilog(L_SERVER, "Link with %s established: (%s) link", | |
870 | log_client_name(client_p, SHOW_IP), show_capabilities(client_p)); | |
871 | ||
872 | hdata.client = &me; | |
873 | hdata.target = client_p; | |
874 | call_hook(h_server_introduced, &hdata); | |
875 | ||
5203cba5 | 876 | snprintf(note, sizeof(note), "Server: %s", client_p->name); |
c6d72037 | 877 | rb_note(client_p->localClient->F, note); |
212380e3 AC |
878 | |
879 | /* | |
880 | ** Old sendto_serv_but_one() call removed because we now | |
881 | ** need to send different names to different servers | |
882 | ** (domain name matching) Send new server to other servers. | |
883 | */ | |
5cefa1d6 | 884 | RB_DLINK_FOREACH(ptr, serv_list.head) |
212380e3 AC |
885 | { |
886 | target_p = ptr->data; | |
887 | ||
888 | if(target_p == client_p) | |
889 | continue; | |
890 | ||
891 | if(has_id(target_p) && has_id(client_p)) | |
892 | { | |
893 | sendto_one(target_p, ":%s SID %s 2 %s :%s%s", | |
894 | me.id, client_p->name, client_p->id, | |
895 | IsHidden(client_p) ? "(H) " : "", client_p->info); | |
896 | ||
ce4fa447 | 897 | if(!EmptyString(client_p->serv->fullcaps)) |
212380e3 AC |
898 | sendto_one(target_p, ":%s ENCAP * GCAP :%s", |
899 | client_p->id, client_p->serv->fullcaps); | |
900 | } | |
901 | else | |
902 | { | |
903 | sendto_one(target_p, ":%s SERVER %s 2 :%s%s", | |
904 | me.name, client_p->name, | |
905 | IsHidden(client_p) ? "(H) " : "", client_p->info); | |
906 | ||
ce4fa447 | 907 | if(!EmptyString(client_p->serv->fullcaps)) |
212380e3 AC |
908 | sendto_one(target_p, ":%s ENCAP * GCAP :%s", |
909 | client_p->name, client_p->serv->fullcaps); | |
910 | } | |
911 | } | |
912 | ||
913 | /* | |
914 | ** Pass on my client information to the new server | |
915 | ** | |
916 | ** First, pass only servers (idea is that if the link gets | |
917 | ** cancelled beacause the server was already there, | |
918 | ** there are no NICK's to be cancelled...). Of course, | |
919 | ** if cancellation occurs, all this info is sent anyway, | |
920 | ** and I guess the link dies when a read is attempted...? --msa | |
55abcbb2 | 921 | ** |
212380e3 AC |
922 | ** Note: Link cancellation to occur at this point means |
923 | ** that at least two servers from my fragment are building | |
924 | ** up connection this other fragment at the same time, it's | |
925 | ** a race condition, not the normal way of operation... | |
926 | ** | |
927 | ** ALSO NOTE: using the get_client_name for server names-- | |
928 | ** see previous *WARNING*!!! (Also, original inpath | |
929 | ** is destroyed...) | |
930 | */ | |
5cefa1d6 | 931 | RB_DLINK_FOREACH(ptr, global_serv_list.head) |
212380e3 AC |
932 | { |
933 | target_p = ptr->data; | |
934 | ||
935 | /* target_p->from == target_p for target_p == client_p */ | |
936 | if(IsMe(target_p) || target_p->from == client_p) | |
937 | continue; | |
938 | ||
939 | /* presumption, if target has an id, so does its uplink */ | |
940 | if(has_id(client_p) && has_id(target_p)) | |
941 | sendto_one(client_p, ":%s SID %s %d %s :%s%s", | |
66c8fdd2 | 942 | target_p->servptr->id, target_p->name, |
212380e3 AC |
943 | target_p->hopcount + 1, target_p->id, |
944 | IsHidden(target_p) ? "(H) " : "", target_p->info); | |
945 | else | |
946 | sendto_one(client_p, ":%s SERVER %s %d :%s%s", | |
66c8fdd2 | 947 | target_p->servptr->name, |
212380e3 AC |
948 | target_p->name, target_p->hopcount + 1, |
949 | IsHidden(target_p) ? "(H) " : "", target_p->info); | |
950 | ||
ce4fa447 | 951 | if(!EmptyString(target_p->serv->fullcaps)) |
212380e3 AC |
952 | sendto_one(client_p, ":%s ENCAP * GCAP :%s", |
953 | get_id(target_p, client_p), | |
954 | target_p->serv->fullcaps); | |
955 | } | |
956 | ||
431a1a27 JT |
957 | if(IsCapable(client_p, CAP_BAN)) |
958 | burst_ban(client_p); | |
959 | ||
7bb8c655 | 960 | burst_TS6(client_p); |
212380e3 AC |
961 | |
962 | /* Always send a PING after connect burst is done */ | |
963 | sendto_one(client_p, "PING :%s", get_id(&me, client_p)); | |
964 | ||
965 | free_pre_client(client_p); | |
966 | ||
0bd120ed | 967 | send_pop_queue(client_p); |
212380e3 AC |
968 | |
969 | return 0; | |
212380e3 AC |
970 | } |
971 | ||
972 | /* | |
973 | * New server connection code | |
974 | * Based upon the stuff floating about in s_bsd.c | |
975 | * -- adrian | |
976 | */ | |
977 | ||
978 | /* | |
979 | * serv_connect() - initiate a server connection | |
980 | * | |
5203cba5 | 981 | * inputs - pointer to conf |
212380e3 AC |
982 | * - pointer to client doing the connet |
983 | * output - | |
984 | * side effects - | |
985 | * | |
986 | * This code initiates a connection to a server. It first checks to make | |
987 | * sure the given server exists. If this is the case, it creates a socket, | |
988 | * creates a client, saves the socket information in the client, and | |
b2f0da88 | 989 | * initiates a connection to the server through rb_connect_tcp(). The |
212380e3 AC |
990 | * completion of this goes through serv_completed_connection(). |
991 | * | |
992 | * We return 1 if the connection is attempted, since we don't know whether | |
993 | * it suceeded or not, and 0 if it fails in here somewhere. | |
994 | */ | |
995 | int | |
996 | serv_connect(struct server_conf *server_p, struct Client *by) | |
997 | { | |
998 | struct Client *client_p; | |
1d02144f | 999 | struct rb_sockaddr_storage myipnum; |
6c528b8e | 1000 | char note[HOSTLEN + 10]; |
1d02144f | 1001 | rb_fde_t *F; |
212380e3 AC |
1002 | |
1003 | s_assert(server_p != NULL); | |
1004 | if(server_p == NULL) | |
1005 | return 0; | |
1006 | ||
1d02144f AC |
1007 | /* log */ |
1008 | rb_inet_ntop_sock((struct sockaddr *)&server_p->my_ipnum, buf, sizeof(buf)); | |
1009 | ilog(L_SERVER, "Connect to *[%s] @%s", server_p->name, buf); | |
1010 | ||
212380e3 AC |
1011 | /* |
1012 | * Make sure this server isn't already connected | |
1013 | */ | |
1014 | if((client_p = find_server(NULL, server_p->name))) | |
1015 | { | |
1016 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1017 | "Server %s already present from %s", | |
b3ebc7ab | 1018 | server_p->name, client_p->name); |
212380e3 AC |
1019 | if(by && IsPerson(by) && !MyClient(by)) |
1020 | sendto_one_notice(by, ":Server %s already present from %s", | |
b3ebc7ab | 1021 | server_p->name, client_p->name); |
212380e3 AC |
1022 | return 0; |
1023 | } | |
1024 | ||
1025 | /* create a socket for the server connection */ | |
1d02144f | 1026 | if((F = rb_socket(GET_SS_FAMILY(&server_p->my_ipnum), SOCK_STREAM, 0, NULL)) == NULL) |
212380e3 | 1027 | { |
825ddf13 | 1028 | ilog_error("opening a stream socket"); |
212380e3 AC |
1029 | return 0; |
1030 | } | |
1031 | ||
1d02144f | 1032 | /* servernames are always guaranteed under HOSTLEN chars */ |
5203cba5 | 1033 | snprintf(note, sizeof(note), "Server: %s", server_p->name); |
6c528b8e | 1034 | rb_note(F, note); |
212380e3 AC |
1035 | |
1036 | /* Create a local client */ | |
1037 | client_p = make_client(NULL); | |
1038 | ||
1d02144f | 1039 | /* Copy in the server, hostname, fd */ |
f427c8b0 VY |
1040 | rb_strlcpy(client_p->name, server_p->name, sizeof(client_p->name)); |
1041 | rb_strlcpy(client_p->host, server_p->host, sizeof(client_p->host)); | |
1d02144f | 1042 | rb_strlcpy(client_p->sockhost, buf, sizeof(client_p->sockhost)); |
6c528b8e | 1043 | client_p->localClient->F = F; |
1d02144f AC |
1044 | /* shove the port number into the sockaddr */ |
1045 | #ifdef RB_IPV6 | |
1046 | if(GET_SS_FAMILY(&server_p->my_ipnum) == AF_INET6) | |
1047 | ((struct sockaddr_in6 *)&server_p->my_ipnum)->sin6_port = htons(server_p->port); | |
1048 | else | |
1049 | #endif | |
1050 | ((struct sockaddr_in *)&server_p->my_ipnum)->sin_port = htons(server_p->port); | |
212380e3 AC |
1051 | |
1052 | /* | |
1053 | * Set up the initial server evilness, ripped straight from | |
1054 | * connect_server(), so don't blame me for it being evil. | |
1055 | * -- adrian | |
1056 | */ | |
1057 | ||
6c528b8e | 1058 | if(!rb_set_buffers(client_p->localClient->F, READBUF_SIZE)) |
212380e3 | 1059 | { |
825ddf13 | 1060 | ilog_error("setting the buffer size for a server connection"); |
212380e3 AC |
1061 | } |
1062 | ||
1063 | /* | |
1064 | * Attach config entries to client here rather than in | |
1065 | * serv_connect_callback(). This to avoid null pointer references. | |
1066 | */ | |
1067 | attach_server_conf(client_p, server_p); | |
1068 | ||
1069 | /* | |
1070 | * at this point we have a connection in progress and C/N lines | |
1071 | * attached to the client, the socket info should be saved in the | |
1072 | * client and it should either be resolved or have a valid address. | |
1073 | * | |
1074 | * The socket has been connected or connect is in progress. | |
1075 | */ | |
1076 | make_server(client_p); | |
1d02144f AC |
1077 | if(by && IsClient(by)) |
1078 | strcpy(client_p->serv->by, by->name); | |
212380e3 | 1079 | else |
1d02144f AC |
1080 | strcpy(client_p->serv->by, "AutoConn."); |
1081 | ||
212380e3 | 1082 | SetConnecting(client_p); |
330fc5c1 | 1083 | rb_dlinkAddTail(client_p, &client_p->node, &global_client_list); |
212380e3 | 1084 | |
1d02144f | 1085 | if(ServerConfVhosted(server_p)) |
212380e3 | 1086 | { |
1d02144f AC |
1087 | memcpy(&myipnum, &server_p->my_ipnum, sizeof(myipnum)); |
1088 | ((struct sockaddr_in *)&myipnum)->sin_port = 0; | |
1089 | SET_SS_FAMILY(&myipnum, GET_SS_FAMILY(&server_p->my_ipnum)); | |
abe5dd20 | 1090 | |
abe5dd20 | 1091 | } |
1d02144f | 1092 | else if(GET_SS_FAMILY(&server_p->my_ipnum) == AF_INET && ServerInfo.specific_ipv4_vhost) |
212380e3 | 1093 | { |
1d02144f AC |
1094 | memcpy(&myipnum, &ServerInfo.ip, sizeof(myipnum)); |
1095 | ((struct sockaddr_in *)&myipnum)->sin_port = 0; | |
1096 | SET_SS_FAMILY(&myipnum, AF_INET); | |
1097 | SET_SS_LEN(&myipnum, sizeof(struct sockaddr_in)); | |
1098 | } | |
17648928 | 1099 | |
ccda6e3f | 1100 | #ifdef RB_IPV6 |
1d02144f AC |
1101 | else if((GET_SS_FAMILY(&server_p->my_ipnum) == AF_INET6) && ServerInfo.specific_ipv6_vhost) |
1102 | { | |
1103 | memcpy(&myipnum, &ServerInfo.ip6, sizeof(myipnum)); | |
1104 | ((struct sockaddr_in6 *)&myipnum)->sin6_port = 0; | |
1105 | SET_SS_FAMILY(&myipnum, AF_INET6); | |
1106 | SET_SS_LEN(&myipnum, sizeof(struct sockaddr_in6)); | |
1107 | } | |
17648928 | 1108 | #endif |
1d02144f AC |
1109 | else |
1110 | { | |
1111 | if(ServerConfSSL(server_p)) | |
1112 | { | |
1113 | rb_connect_tcp(client_p->localClient->F, | |
1114 | (struct sockaddr *)&server_p->my_ipnum, NULL, 0, | |
1115 | serv_connect_ssl_callback, client_p, | |
1116 | ConfigFileEntry.connect_timeout); | |
1117 | } | |
1118 | else | |
1119 | rb_connect_tcp(client_p->localClient->F, | |
1120 | (struct sockaddr *)&server_p->my_ipnum, NULL, 0, | |
1121 | serv_connect_callback, client_p, | |
1122 | ConfigFileEntry.connect_timeout); | |
1123 | ||
abe5dd20 JT |
1124 | return 1; |
1125 | } | |
1d02144f AC |
1126 | if(ServerConfSSL(server_p)) |
1127 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&server_p->my_ipnum, | |
1128 | (struct sockaddr *)&myipnum, | |
1129 | GET_SS_LEN(&myipnum), serv_connect_ssl_callback, client_p, | |
1130 | ConfigFileEntry.connect_timeout); | |
1131 | else | |
1132 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&server_p->my_ipnum, | |
1133 | (struct sockaddr *)&myipnum, | |
1134 | GET_SS_LEN(&myipnum), serv_connect_callback, client_p, | |
1135 | ConfigFileEntry.connect_timeout); | |
1136 | ||
1137 | return 1; | |
212380e3 AC |
1138 | } |
1139 | ||
f4a759c5 VY |
1140 | static void |
1141 | serv_connect_ssl_callback(rb_fde_t *F, int status, void *data) | |
1142 | { | |
1143 | struct Client *client_p = data; | |
1144 | rb_fde_t *xF[2]; | |
9ec51326 | 1145 | rb_connect_sockaddr(F, (struct sockaddr *)&client_p->localClient->ip, sizeof(client_p->localClient->ip)); |
f4a759c5 VY |
1146 | if(status != RB_OK) |
1147 | { | |
9ec51326 JT |
1148 | /* Print error message, just like non-SSL. */ |
1149 | serv_connect_callback(F, status, data); | |
f4a759c5 VY |
1150 | return; |
1151 | } | |
eda22d87 JT |
1152 | if(rb_socketpair(AF_UNIX, SOCK_STREAM, 0, &xF[0], &xF[1], "Outgoing ssld connection") == -1) |
1153 | { | |
1154 | ilog_error("rb_socketpair failed for server"); | |
1155 | serv_connect_callback(F, RB_ERROR, data); | |
1156 | return; | |
55abcbb2 | 1157 | |
eda22d87 | 1158 | } |
f4a759c5 | 1159 | client_p->localClient->F = xF[0]; |
f4a759c5 VY |
1160 | |
1161 | client_p->localClient->ssl_ctl = start_ssld_connect(F, xF[1], rb_get_fd(xF[0])); | |
5e270e7d SA |
1162 | if(!client_p->localClient->ssl_ctl) |
1163 | { | |
1164 | serv_connect_callback(client_p->localClient->F, RB_ERROR, data); | |
1165 | return; | |
1166 | } | |
f4a759c5 | 1167 | SetSSL(client_p); |
39452169 | 1168 | serv_connect_callback(client_p->localClient->F, RB_OK, client_p); |
c6d72037 VY |
1169 | } |
1170 | ||
212380e3 AC |
1171 | /* |
1172 | * serv_connect_callback() - complete a server connection. | |
55abcbb2 | 1173 | * |
212380e3 AC |
1174 | * This routine is called after the server connection attempt has |
1175 | * completed. If unsucessful, an error is sent to ops and the client | |
1176 | * is closed. If sucessful, it goes through the initialisation/check | |
1177 | * procedures, the capabilities are sent, and the socket is then | |
1178 | * marked for reading. | |
1179 | */ | |
1180 | static void | |
6c528b8e | 1181 | serv_connect_callback(rb_fde_t *F, int status, void *data) |
212380e3 AC |
1182 | { |
1183 | struct Client *client_p = data; | |
1184 | struct server_conf *server_p; | |
1185 | char *errstr; | |
1186 | ||
1187 | /* First, make sure its a real client! */ | |
1188 | s_assert(client_p != NULL); | |
6c528b8e | 1189 | s_assert(client_p->localClient->F == F); |
212380e3 AC |
1190 | |
1191 | if(client_p == NULL) | |
1192 | return; | |
1193 | ||
1194 | /* while we were waiting for the callback, its possible this already | |
1195 | * linked in.. --fl | |
1196 | */ | |
1197 | if(find_server(NULL, client_p->name) != NULL) | |
1198 | { | |
1199 | exit_client(client_p, client_p, &me, "Server Exists"); | |
1200 | return; | |
1201 | } | |
1202 | ||
f4a759c5 | 1203 | if(client_p->localClient->ssl_ctl == NULL) |
c6d72037 VY |
1204 | rb_connect_sockaddr(F, (struct sockaddr *)&client_p->localClient->ip, sizeof(client_p->localClient->ip)); |
1205 | ||
212380e3 | 1206 | /* Check the status */ |
6c528b8e | 1207 | if(status != RB_OK) |
212380e3 AC |
1208 | { |
1209 | /* COMM_ERR_TIMEOUT wont have an errno associated with it, | |
1210 | * the others will.. --fl | |
1211 | */ | |
6c528b8e | 1212 | if(status == RB_ERR_TIMEOUT) |
212380e3 AC |
1213 | { |
1214 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1215 | "Error connecting to %s[%s]: %s", | |
55abcbb2 | 1216 | client_p->name, |
212380e3 | 1217 | "255.255.255.255", |
b2f0da88 | 1218 | rb_errstr(status)); |
212380e3 AC |
1219 | ilog(L_SERVER, "Error connecting to %s[%s]: %s", |
1220 | client_p->name, client_p->sockhost, | |
b2f0da88 | 1221 | rb_errstr(status)); |
212380e3 AC |
1222 | } |
1223 | else | |
1224 | { | |
6c528b8e | 1225 | errstr = strerror(rb_get_sockerr(F)); |
212380e3 AC |
1226 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, |
1227 | "Error connecting to %s[%s]: %s (%s)", | |
1228 | client_p->name, | |
212380e3 | 1229 | "255.255.255.255", |
b2f0da88 | 1230 | rb_errstr(status), errstr); |
212380e3 AC |
1231 | ilog(L_SERVER, "Error connecting to %s[%s]: %s (%s)", |
1232 | client_p->name, client_p->sockhost, | |
b2f0da88 | 1233 | rb_errstr(status), errstr); |
212380e3 AC |
1234 | } |
1235 | ||
b2f0da88 | 1236 | exit_client(client_p, client_p, &me, rb_errstr(status)); |
212380e3 AC |
1237 | return; |
1238 | } | |
1239 | ||
1240 | /* COMM_OK, so continue the connection procedure */ | |
1241 | /* Get the C/N lines */ | |
1242 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
1243 | { | |
1244 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, "Lost connect{} block for %s", | |
b3ebc7ab | 1245 | client_p->name); |
212380e3 AC |
1246 | exit_client(client_p, client_p, &me, "Lost connect{} block"); |
1247 | return; | |
1248 | } | |
1249 | ||
1250 | /* Next, send the initial handshake */ | |
1251 | SetHandshake(client_p); | |
1252 | ||
ff0cc1e6 | 1253 | /* the server may be linking based on certificate fingerprint now. --nenolod */ |
55abcbb2 | 1254 | sendto_one(client_p, "PASS %s TS %d :%s", |
ff0cc1e6 | 1255 | EmptyString(server_p->spasswd) ? "*" : server_p->spasswd, TS_CURRENT, me.id); |
212380e3 AC |
1256 | |
1257 | /* pass my info to the new server */ | |
1258 | send_capabilities(client_p, default_server_capabs | |
1259 | | (ServerConfCompressed(server_p) ? CAP_ZIP_SUPPORTED : 0) | |
1260 | | (ServerConfTb(server_p) ? CAP_TB : 0)); | |
1261 | ||
1262 | sendto_one(client_p, "SERVER %s 1 :%s%s", | |
1263 | me.name, | |
1264 | ConfigServerHide.hidden ? "(H) " : "", me.info); | |
1265 | ||
55abcbb2 | 1266 | /* |
212380e3 AC |
1267 | * If we've been marked dead because a send failed, just exit |
1268 | * here now and save everyone the trouble of us ever existing. | |
1269 | */ | |
1270 | if(IsAnyDead(client_p)) | |
1271 | { | |
1272 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1273 | "%s went dead during handshake", client_p->name); | |
1274 | exit_client(client_p, client_p, &me, "Went dead during handshake"); | |
1275 | return; | |
1276 | } | |
1277 | ||
1278 | /* don't move to serv_list yet -- we haven't sent a burst! */ | |
1279 | ||
1280 | /* If we get here, we're ok, so lets start reading some data */ | |
6c528b8e | 1281 | read_packet(F, client_p); |
212380e3 | 1282 | } |