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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" | |
212380e3 | 34 | #include "hash.h" |
4562c604 | 35 | #include "match.h" |
212380e3 AC |
36 | #include "ircd.h" |
37 | #include "ircd_defs.h" | |
38 | #include "numeric.h" | |
39 | #include "packet.h" | |
212380e3 AC |
40 | #include "s_conf.h" |
41 | #include "s_newconf.h" | |
4016731b | 42 | #include "logger.h" |
212380e3 AC |
43 | #include "s_stats.h" |
44 | #include "s_user.h" | |
45 | #include "scache.h" | |
46 | #include "send.h" | |
47 | #include "client.h" | |
212380e3 AC |
48 | #include "channel.h" /* chcap_usage_counts stuff... */ |
49 | #include "hook.h" | |
50 | #include "msg.h" | |
54015b5f | 51 | #include "reject.h" |
c6d72037 | 52 | #include "sslproc.h" |
346fba92 | 53 | #include "capability.h" |
77d3d2db | 54 | #include "s_assert.h" |
212380e3 | 55 | |
212380e3 AC |
56 | #ifndef INADDR_NONE |
57 | #define INADDR_NONE ((unsigned int) 0xffffffff) | |
58 | #endif | |
59 | ||
212380e3 AC |
60 | int MaxConnectionCount = 1; |
61 | int MaxClientCount = 1; | |
62 | int refresh_user_links = 0; | |
63 | ||
64 | static char buf[BUFSIZE]; | |
65 | ||
212380e3 AC |
66 | /* |
67 | * list of recognized server capabilities. "TS" is not on the list | |
68 | * because all servers that we talk to already do TS, and the kludged | |
69 | * extra argument to "PASS" takes care of checking that. -orabidoo | |
70 | */ | |
346fba92 | 71 | struct CapabilityIndex *serv_capindex = NULL; |
486cd344 | 72 | struct CapabilityIndex *cli_capindex = NULL; |
346fba92 AC |
73 | |
74 | unsigned int CAP_CAP; | |
75 | unsigned int CAP_QS; | |
76 | unsigned int CAP_EX; | |
77 | unsigned int CAP_CHW; | |
78 | unsigned int CAP_IE; | |
79 | unsigned int CAP_KLN; | |
80 | unsigned int CAP_ZIP; | |
81 | unsigned int CAP_KNOCK; | |
82 | unsigned int CAP_TB; | |
83 | unsigned int CAP_UNKLN; | |
84 | unsigned int CAP_CLUSTER; | |
85 | unsigned int CAP_ENCAP; | |
86 | unsigned int CAP_TS6; | |
87 | unsigned int CAP_SERVICE; | |
88 | unsigned int CAP_RSFNC; | |
89 | unsigned int CAP_SAVE; | |
90 | unsigned int CAP_EUID; | |
91 | unsigned int CAP_EOPMOD; | |
92 | unsigned int CAP_BAN; | |
93 | unsigned int CAP_MLOCK; | |
94 | ||
32df5e96 | 95 | unsigned int CLICAP_MULTI_PREFIX; |
32df5e96 AC |
96 | unsigned int CLICAP_ACCOUNT_NOTIFY; |
97 | unsigned int CLICAP_EXTENDED_JOIN; | |
98 | unsigned int CLICAP_AWAY_NOTIFY; | |
32df5e96 AC |
99 | unsigned int CLICAP_USERHOST_IN_NAMES; |
100 | unsigned int CLICAP_CAP_NOTIFY; | |
101 | unsigned int CLICAP_CHGHOST; | |
be2ce24c | 102 | unsigned int CLICAP_ECHO_MESSAGE; |
32df5e96 | 103 | |
346fba92 AC |
104 | /* |
105 | * initialize our builtin capability table. --nenolod | |
106 | */ | |
107 | void | |
108 | init_builtin_capabs(void) | |
109 | { | |
885cd603 | 110 | serv_capindex = capability_index_create("server capabilities"); |
346fba92 | 111 | |
22cae20f JT |
112 | /* These two are not set via CAPAB/GCAP keywords. */ |
113 | CAP_CAP = capability_put_anonymous(serv_capindex); | |
114 | CAP_TS6 = capability_put_anonymous(serv_capindex); | |
115 | ||
486cd344 AC |
116 | CAP_QS = capability_put(serv_capindex, "QS", NULL); |
117 | CAP_EX = capability_put(serv_capindex, "EX", NULL); | |
118 | CAP_CHW = capability_put(serv_capindex, "CHW", NULL); | |
119 | CAP_IE = capability_put(serv_capindex, "IE", NULL); | |
120 | CAP_KLN = capability_put(serv_capindex, "KLN", NULL); | |
121 | CAP_KNOCK = capability_put(serv_capindex, "KNOCK", NULL); | |
122 | CAP_ZIP = capability_put(serv_capindex, "ZIP", NULL); | |
123 | CAP_TB = capability_put(serv_capindex, "TB", NULL); | |
124 | CAP_UNKLN = capability_put(serv_capindex, "UNKLN", NULL); | |
125 | CAP_CLUSTER = capability_put(serv_capindex, "CLUSTER", NULL); | |
126 | CAP_ENCAP = capability_put(serv_capindex, "ENCAP", NULL); | |
127 | CAP_SERVICE = capability_put(serv_capindex, "SERVICES", NULL); | |
128 | CAP_RSFNC = capability_put(serv_capindex, "RSFNC", NULL); | |
129 | CAP_SAVE = capability_put(serv_capindex, "SAVE", NULL); | |
130 | CAP_EUID = capability_put(serv_capindex, "EUID", NULL); | |
131 | CAP_EOPMOD = capability_put(serv_capindex, "EOPMOD", NULL); | |
132 | CAP_BAN = capability_put(serv_capindex, "BAN", NULL); | |
133 | CAP_MLOCK = capability_put(serv_capindex, "MLOCK", NULL); | |
58b60c20 JT |
134 | |
135 | capability_require(serv_capindex, "QS"); | |
d0c2fc82 JT |
136 | capability_require(serv_capindex, "EX"); |
137 | capability_require(serv_capindex, "IE"); | |
58b60c20 | 138 | capability_require(serv_capindex, "ENCAP"); |
486cd344 AC |
139 | |
140 | cli_capindex = capability_index_create("client capabilities"); | |
32df5e96 AC |
141 | |
142 | CLICAP_MULTI_PREFIX = capability_put(cli_capindex, "multi-prefix", NULL); | |
32df5e96 AC |
143 | CLICAP_ACCOUNT_NOTIFY = capability_put(cli_capindex, "account-notify", NULL); |
144 | CLICAP_EXTENDED_JOIN = capability_put(cli_capindex, "extended-join", NULL); | |
145 | CLICAP_AWAY_NOTIFY = capability_put(cli_capindex, "away-notify", NULL); | |
32df5e96 AC |
146 | CLICAP_USERHOST_IN_NAMES = capability_put(cli_capindex, "userhost-in-names", NULL); |
147 | CLICAP_CAP_NOTIFY = capability_put(cli_capindex, "cap-notify", NULL); | |
148 | CLICAP_CHGHOST = capability_put(cli_capindex, "chghost", NULL); | |
be2ce24c | 149 | CLICAP_ECHO_MESSAGE = capability_put(cli_capindex, "echo-message", NULL); |
346fba92 | 150 | } |
212380e3 | 151 | |
212380e3 | 152 | static CNCB serv_connect_callback; |
c6d72037 | 153 | static CNCB serv_connect_ssl_callback; |
212380e3 AC |
154 | |
155 | /* | |
156 | * hunt_server - Do the basic thing in delivering the message (command) | |
157 | * across the relays to the specific server (server) for | |
158 | * actions. | |
159 | * | |
160 | * Note: The command is a format string and *MUST* be | |
161 | * of prefixed style (e.g. ":%s COMMAND %s ..."). | |
162 | * Command can have only max 8 parameters. | |
163 | * | |
164 | * server parv[server] is the parameter identifying the | |
165 | * target server. | |
166 | * | |
167 | * *WARNING* | |
168 | * parv[server] is replaced with the pointer to the | |
169 | * real servername from the matched client (I'm lazy | |
170 | * now --msa). | |
171 | * | |
172 | * returns: (see #defines) | |
173 | */ | |
174 | int | |
175 | hunt_server(struct Client *client_p, struct Client *source_p, | |
176 | const char *command, int server, int parc, const char *parv[]) | |
177 | { | |
178 | struct Client *target_p; | |
179 | int wilds; | |
330fc5c1 | 180 | rb_dlink_node *ptr; |
212380e3 AC |
181 | const char *old; |
182 | char *new; | |
183 | ||
184 | /* | |
185 | * Assume it's me, if no server | |
186 | */ | |
187 | if(parc <= server || EmptyString(parv[server]) || | |
4d7a1ee5 | 188 | match(parv[server], me.name) || (strcmp(parv[server], me.id) == 0)) |
212380e3 | 189 | return (HUNTED_ISME); |
346fba92 | 190 | |
212380e3 AC |
191 | new = LOCAL_COPY(parv[server]); |
192 | ||
193 | /* | |
194 | * These are to pickup matches that would cause the following | |
195 | * message to go in the wrong direction while doing quick fast | |
196 | * non-matching lookups. | |
197 | */ | |
198 | if(MyClient(source_p)) | |
199 | target_p = find_named_client(new); | |
200 | else | |
201 | target_p = find_client(new); | |
202 | ||
203 | if(target_p) | |
204 | if(target_p->from == source_p->from && !MyConnect(target_p)) | |
205 | target_p = NULL; | |
206 | ||
212380e3 AC |
207 | collapse(new); |
208 | wilds = (strchr(new, '?') || strchr(new, '*')); | |
209 | ||
210 | /* | |
211 | * Again, if there are no wild cards involved in the server | |
212 | * name, use the hash lookup | |
213 | */ | |
cd300c1b | 214 | if(!target_p && wilds) |
212380e3 | 215 | { |
2fb07961 | 216 | RB_DLINK_FOREACH(ptr, global_serv_list.head) |
212380e3 | 217 | { |
cd300c1b | 218 | if(match(new, ((struct Client *) (ptr->data))->name)) |
212380e3 | 219 | { |
cd300c1b JT |
220 | target_p = ptr->data; |
221 | break; | |
212380e3 AC |
222 | } |
223 | } | |
224 | } | |
225 | ||
cd300c1b JT |
226 | if(target_p && !IsRegistered(target_p)) |
227 | target_p = NULL; | |
228 | ||
212380e3 AC |
229 | if(target_p) |
230 | { | |
212380e3 AC |
231 | if(IsMe(target_p) || MyClient(target_p)) |
232 | return HUNTED_ISME; | |
233 | ||
234 | old = parv[server]; | |
235 | parv[server] = get_id(target_p, target_p); | |
236 | ||
237 | sendto_one(target_p, command, get_id(source_p, target_p), | |
238 | parv[1], parv[2], parv[3], parv[4], parv[5], parv[6], parv[7], parv[8]); | |
239 | parv[server] = old; | |
240 | return (HUNTED_PASS); | |
241 | } | |
242 | ||
95d36ef5 | 243 | if(MyClient(source_p) || !IsDigit(parv[server][0])) |
212380e3 AC |
244 | sendto_one_numeric(source_p, ERR_NOSUCHSERVER, |
245 | form_str(ERR_NOSUCHSERVER), parv[server]); | |
246 | return (HUNTED_NOSUCH); | |
247 | } | |
248 | ||
249 | /* | |
250 | * try_connections - scan through configuration and try new connections. | |
251 | * Returns the calendar time when the next call to this | |
252 | * function should be made latest. (No harm done if this | |
253 | * is called earlier or later...) | |
254 | */ | |
255 | void | |
256 | try_connections(void *unused) | |
257 | { | |
258 | struct Client *client_p; | |
259 | struct server_conf *server_p = NULL; | |
260 | struct server_conf *tmp_p; | |
261 | struct Class *cltmp; | |
330fc5c1 | 262 | rb_dlink_node *ptr; |
07554369 | 263 | bool connecting = false; |
212380e3 AC |
264 | int confrq = 0; |
265 | time_t next = 0; | |
266 | ||
5cefa1d6 | 267 | RB_DLINK_FOREACH(ptr, server_conf_list.head) |
212380e3 AC |
268 | { |
269 | tmp_p = ptr->data; | |
270 | ||
271 | if(ServerConfIllegal(tmp_p) || !ServerConfAutoconn(tmp_p)) | |
272 | continue; | |
273 | ||
f4a759c5 | 274 | /* don't allow ssl connections if ssl isn't setup */ |
bfc44622 | 275 | if(ServerConfSSL(tmp_p) && (!ircd_ssl_ok || !get_ssld_count())) |
c6d72037 VY |
276 | continue; |
277 | ||
212380e3 AC |
278 | cltmp = tmp_p->class; |
279 | ||
280 | /* | |
281 | * Skip this entry if the use of it is still on hold until | |
282 | * future. Otherwise handle this entry (and set it on hold | |
283 | * until next time). Will reset only hold times, if already | |
284 | * made one successfull connection... [this algorithm is | |
285 | * a bit fuzzy... -- msa >;) ] | |
286 | */ | |
e3354945 | 287 | if(tmp_p->hold > rb_current_time()) |
212380e3 AC |
288 | { |
289 | if(next > tmp_p->hold || next == 0) | |
290 | next = tmp_p->hold; | |
291 | continue; | |
292 | } | |
293 | ||
294 | confrq = get_con_freq(cltmp); | |
e3354945 | 295 | tmp_p->hold = rb_current_time() + confrq; |
212380e3 AC |
296 | |
297 | /* | |
298 | * Found a CONNECT config with port specified, scan clients | |
299 | * and see if this server is already connected? | |
300 | */ | |
301 | client_p = find_server(NULL, tmp_p->name); | |
302 | ||
303 | if(!client_p && (CurrUsers(cltmp) < MaxUsers(cltmp)) && !connecting) | |
304 | { | |
305 | server_p = tmp_p; | |
306 | ||
307 | /* We connect only one at time... */ | |
07554369 | 308 | connecting = true; |
212380e3 AC |
309 | } |
310 | ||
311 | if((next > tmp_p->hold) || (next == 0)) | |
312 | next = tmp_p->hold; | |
313 | } | |
314 | ||
315 | /* TODO: change this to set active flag to 0 when added to event! --Habeeb */ | |
316 | if(GlobalSetOptions.autoconn == 0) | |
317 | return; | |
318 | ||
319 | if(!connecting) | |
320 | return; | |
321 | ||
322 | /* move this connect entry to end.. */ | |
330fc5c1 AC |
323 | rb_dlinkDelete(&server_p->node, &server_conf_list); |
324 | rb_dlinkAddTail(server_p, &server_p->node, &server_conf_list); | |
212380e3 AC |
325 | |
326 | /* | |
327 | * We used to only print this if serv_connect() actually | |
b2f0da88 | 328 | * suceeded, but since rb_tcp_connect() can call the callback |
212380e3 AC |
329 | * immediately if there is an error, we were getting error messages |
330 | * in the wrong order. SO, we just print out the activated line, | |
331 | * and let serv_connect() / serv_connect_callback() print an | |
332 | * error afterwards if it fails. | |
333 | * -- adrian | |
334 | */ | |
212380e3 AC |
335 | sendto_realops_snomask(SNO_GENERAL, L_ALL, |
336 | "Connection to %s activated", | |
337 | server_p->name); | |
212380e3 AC |
338 | |
339 | serv_connect(server_p, 0); | |
340 | } | |
341 | ||
342 | int | |
343 | check_server(const char *name, struct Client *client_p) | |
344 | { | |
345 | struct server_conf *server_p = NULL; | |
346 | struct server_conf *tmp_p; | |
330fc5c1 | 347 | rb_dlink_node *ptr; |
212380e3 | 348 | int error = -1; |
e69375f3 | 349 | const char *encr; |
212380e3 AC |
350 | |
351 | s_assert(NULL != client_p); | |
352 | if(client_p == NULL) | |
353 | return error; | |
354 | ||
355 | if(!(client_p->localClient->passwd)) | |
356 | return -2; | |
357 | ||
358 | if(strlen(name) > HOSTLEN) | |
359 | return -4; | |
360 | ||
5cefa1d6 | 361 | RB_DLINK_FOREACH(ptr, server_conf_list.head) |
212380e3 AC |
362 | { |
363 | tmp_p = ptr->data; | |
364 | ||
365 | if(ServerConfIllegal(tmp_p)) | |
366 | continue; | |
367 | ||
368 | if(!match(tmp_p->name, name)) | |
369 | continue; | |
370 | ||
371 | error = -3; | |
372 | ||
373 | /* XXX: Fix me for IPv6 */ | |
374 | /* XXX sockhost is the IPv4 ip as a string */ | |
375 | if(match(tmp_p->host, client_p->host) || | |
376 | match(tmp_p->host, client_p->sockhost)) | |
377 | { | |
378 | error = -2; | |
379 | ||
ff0cc1e6 | 380 | if(tmp_p->passwd) |
212380e3 | 381 | { |
ff0cc1e6 | 382 | if(ServerConfEncrypted(tmp_p)) |
212380e3 | 383 | { |
e69375f3 JT |
384 | encr = rb_crypt(client_p->localClient->passwd, |
385 | tmp_p->passwd); | |
386 | if(encr != NULL && !strcmp(tmp_p->passwd, encr)) | |
ff0cc1e6 AC |
387 | { |
388 | server_p = tmp_p; | |
389 | break; | |
390 | } | |
391 | else | |
392 | continue; | |
212380e3 | 393 | } |
ff0cc1e6 AC |
394 | else if(strcmp(tmp_p->passwd, client_p->localClient->passwd)) |
395 | continue; | |
212380e3 | 396 | } |
ff0cc1e6 AC |
397 | |
398 | if(tmp_p->certfp) | |
212380e3 | 399 | { |
ff0cc1e6 AC |
400 | if(!client_p->certfp || strcasecmp(tmp_p->certfp, client_p->certfp) != 0) |
401 | continue; | |
212380e3 | 402 | } |
ff0cc1e6 AC |
403 | |
404 | server_p = tmp_p; | |
405 | break; | |
212380e3 AC |
406 | } |
407 | } | |
408 | ||
409 | if(server_p == NULL) | |
410 | return error; | |
411 | ||
f4a759c5 VY |
412 | if(ServerConfSSL(server_p) && client_p->localClient->ssl_ctl == NULL) |
413 | { | |
414 | return -5; | |
c6d72037 VY |
415 | } |
416 | ||
212380e3 AC |
417 | attach_server_conf(client_p, server_p); |
418 | ||
419 | /* clear ZIP/TB if they support but we dont want them */ | |
420 | #ifdef HAVE_LIBZ | |
421 | if(!ServerConfCompressed(server_p)) | |
422 | #endif | |
423 | ClearCap(client_p, CAP_ZIP); | |
424 | ||
425 | if(!ServerConfTb(server_p)) | |
426 | ClearCap(client_p, CAP_TB); | |
427 | ||
428 | return 0; | |
429 | } | |
430 | ||
431 | /* | |
432 | * send_capabilities | |
433 | * | |
434 | * inputs - Client pointer to send to | |
435 | * - int flag of capabilities that this server has | |
436 | * output - NONE | |
437 | * side effects - send the CAPAB line to a server -orabidoo | |
212380e3 AC |
438 | */ |
439 | void | |
346fba92 | 440 | send_capabilities(struct Client *client_p, unsigned int cap_can_send) |
212380e3 | 441 | { |
346fba92 | 442 | sendto_one(client_p, "CAPAB :%s", capability_index_list(serv_capindex, cap_can_send)); |
212380e3 AC |
443 | } |
444 | ||
431a1a27 JT |
445 | static void |
446 | burst_ban(struct Client *client_p) | |
447 | { | |
448 | rb_dlink_node *ptr; | |
449 | struct ConfItem *aconf; | |
450 | const char *type, *oper; | |
451 | /* +5 for !,@,{,} and null */ | |
452 | char operbuf[NICKLEN + USERLEN + HOSTLEN + HOSTLEN + 5]; | |
453 | char *p; | |
454 | size_t melen; | |
455 | ||
456 | melen = strlen(me.name); | |
457 | RB_DLINK_FOREACH(ptr, prop_bans.head) | |
458 | { | |
459 | aconf = ptr->data; | |
460 | ||
461 | /* Skip expired stuff. */ | |
462 | if(aconf->lifetime < rb_current_time()) | |
463 | continue; | |
464 | switch(aconf->status & ~CONF_ILLEGAL) | |
465 | { | |
466 | case CONF_KILL: type = "K"; break; | |
467 | case CONF_DLINE: type = "D"; break; | |
468 | case CONF_XLINE: type = "X"; break; | |
469 | case CONF_RESV_NICK: type = "R"; break; | |
470 | case CONF_RESV_CHANNEL: type = "R"; break; | |
471 | default: | |
472 | continue; | |
473 | } | |
474 | oper = aconf->info.oper; | |
475 | if(aconf->flags & CONF_FLAGS_MYOPER) | |
476 | { | |
477 | /* Our operator{} names may not be meaningful | |
478 | * to other servers, so rewrite to our server | |
479 | * name. | |
480 | */ | |
481 | rb_strlcpy(operbuf, aconf->info.oper, sizeof buf); | |
482 | p = strrchr(operbuf, '{'); | |
ee6da53d JT |
483 | if (p != NULL && |
484 | operbuf + sizeof operbuf - p > (ptrdiff_t)(melen + 2)) | |
431a1a27 JT |
485 | { |
486 | memcpy(p + 1, me.name, melen); | |
487 | p[melen + 1] = '}'; | |
488 | p[melen + 2] = '\0'; | |
489 | oper = operbuf; | |
490 | } | |
491 | } | |
cedb7d05 | 492 | sendto_one(client_p, ":%s BAN %s %s %s %lu %d %d %s :%s%s%s", |
431a1a27 | 493 | me.id, |
431a1a27 JT |
494 | type, |
495 | aconf->user ? aconf->user : "*", aconf->host, | |
496 | (unsigned long)aconf->created, | |
497 | (int)(aconf->hold - aconf->created), | |
498 | (int)(aconf->lifetime - aconf->created), | |
499 | oper, | |
500 | aconf->passwd, | |
501 | aconf->spasswd ? "|" : "", | |
502 | aconf->spasswd ? aconf->spasswd : ""); | |
503 | } | |
504 | } | |
505 | ||
212380e3 AC |
506 | /* burst_modes_TS6() |
507 | * | |
508 | * input - client to burst to, channel name, list to burst, mode flag | |
509 | * output - | |
510 | * side effects - client is sent a list of +b, +e, or +I modes | |
511 | */ | |
512 | static void | |
55abcbb2 | 513 | burst_modes_TS6(struct Client *client_p, struct Channel *chptr, |
330fc5c1 | 514 | rb_dlink_list *list, char flag) |
212380e3 | 515 | { |
330fc5c1 | 516 | rb_dlink_node *ptr; |
212380e3 AC |
517 | struct Ban *banptr; |
518 | char *t; | |
519 | int tlen; | |
520 | int mlen; | |
521 | int cur_len; | |
522 | ||
5203cba5 | 523 | cur_len = mlen = sprintf(buf, ":%s BMASK %ld %s %c :", |
212380e3 AC |
524 | me.id, (long) chptr->channelts, chptr->chname, flag); |
525 | t = buf + mlen; | |
526 | ||
5cefa1d6 | 527 | RB_DLINK_FOREACH(ptr, list->head) |
212380e3 AC |
528 | { |
529 | banptr = ptr->data; | |
530 | ||
7f0fc87d | 531 | tlen = strlen(banptr->banstr) + (banptr->forward ? strlen(banptr->forward) + 1 : 0) + 1; |
212380e3 AC |
532 | |
533 | /* uh oh */ | |
534 | if(cur_len + tlen > BUFSIZE - 3) | |
535 | { | |
536 | /* the one we're trying to send doesnt fit at all! */ | |
537 | if(cur_len == mlen) | |
538 | { | |
539 | s_assert(0); | |
540 | continue; | |
541 | } | |
542 | ||
543 | /* chop off trailing space and send.. */ | |
544 | *(t-1) = '\0'; | |
545 | sendto_one(client_p, "%s", buf); | |
546 | cur_len = mlen; | |
547 | t = buf + mlen; | |
548 | } | |
549 | ||
7f0fc87d | 550 | if (banptr->forward) |
5203cba5 | 551 | sprintf(t, "%s$%s ", banptr->banstr, banptr->forward); |
7f0fc87d | 552 | else |
5203cba5 | 553 | sprintf(t, "%s ", banptr->banstr); |
212380e3 AC |
554 | t += tlen; |
555 | cur_len += tlen; | |
556 | } | |
557 | ||
558 | /* cant ever exit the loop above without having modified buf, | |
559 | * chop off trailing space and send. | |
560 | */ | |
561 | *(t-1) = '\0'; | |
562 | sendto_one(client_p, "%s", buf); | |
563 | } | |
564 | ||
212380e3 AC |
565 | /* |
566 | * burst_TS6 | |
55abcbb2 | 567 | * |
212380e3 AC |
568 | * inputs - client (server) to send nick towards |
569 | * - client to send nick for | |
570 | * output - NONE | |
571 | * side effects - NICK message is sent towards given client_p | |
572 | */ | |
573 | static void | |
574 | burst_TS6(struct Client *client_p) | |
575 | { | |
9744d53e | 576 | char ubuf[BUFSIZE]; |
212380e3 AC |
577 | struct Client *target_p; |
578 | struct Channel *chptr; | |
579 | struct membership *msptr; | |
580 | hook_data_client hclientinfo; | |
581 | hook_data_channel hchaninfo; | |
330fc5c1 AC |
582 | rb_dlink_node *ptr; |
583 | rb_dlink_node *uptr; | |
212380e3 AC |
584 | char *t; |
585 | int tlen, mlen; | |
586 | int cur_len = 0; | |
587 | ||
588 | hclientinfo.client = hchaninfo.client = client_p; | |
589 | ||
5cefa1d6 | 590 | RB_DLINK_FOREACH(ptr, global_client_list.head) |
212380e3 AC |
591 | { |
592 | target_p = ptr->data; | |
593 | ||
594 | if(!IsPerson(target_p)) | |
595 | continue; | |
596 | ||
29c92cf9 | 597 | send_umode(NULL, target_p, 0, ubuf); |
212380e3 AC |
598 | if(!*ubuf) |
599 | { | |
600 | ubuf[0] = '+'; | |
601 | ubuf[1] = '\0'; | |
602 | } | |
603 | ||
bea2295f | 604 | if(IsCapable(client_p, CAP_EUID)) |
212380e3 AC |
605 | sendto_one(client_p, ":%s EUID %s %d %ld %s %s %s %s %s %s %s :%s", |
606 | target_p->servptr->id, target_p->name, | |
55abcbb2 | 607 | target_p->hopcount + 1, |
212380e3 AC |
608 | (long) target_p->tsinfo, ubuf, |
609 | target_p->username, target_p->host, | |
610 | IsIPSpoof(target_p) ? "0" : target_p->sockhost, | |
611 | target_p->id, | |
612 | IsDynSpoof(target_p) ? target_p->orighost : "*", | |
613 | EmptyString(target_p->user->suser) ? "*" : target_p->user->suser, | |
614 | target_p->info); | |
bea2295f | 615 | else |
212380e3 AC |
616 | sendto_one(client_p, ":%s UID %s %d %ld %s %s %s %s %s :%s", |
617 | target_p->servptr->id, target_p->name, | |
55abcbb2 | 618 | target_p->hopcount + 1, |
212380e3 AC |
619 | (long) target_p->tsinfo, ubuf, |
620 | target_p->username, target_p->host, | |
621 | IsIPSpoof(target_p) ? "0" : target_p->sockhost, | |
622 | target_p->id, target_p->info); | |
bea2295f | 623 | |
8eda114a JT |
624 | if(!EmptyString(target_p->certfp)) |
625 | sendto_one(client_p, ":%s ENCAP * CERTFP :%s", | |
626 | use_id(target_p), target_p->certfp); | |
627 | ||
bea2295f | 628 | if(!IsCapable(client_p, CAP_EUID)) |
212380e3 AC |
629 | { |
630 | if(IsDynSpoof(target_p)) | |
631 | sendto_one(client_p, ":%s ENCAP * REALHOST %s", | |
632 | use_id(target_p), target_p->orighost); | |
633 | if(!EmptyString(target_p->user->suser)) | |
634 | sendto_one(client_p, ":%s ENCAP * LOGIN %s", | |
635 | use_id(target_p), target_p->user->suser); | |
636 | } | |
637 | ||
c127b45b | 638 | if(ConfigFileEntry.burst_away && !EmptyString(target_p->user->away)) |
212380e3 AC |
639 | sendto_one(client_p, ":%s AWAY :%s", |
640 | use_id(target_p), | |
c127b45b | 641 | target_p->user->away); |
212380e3 AC |
642 | |
643 | hclientinfo.target = target_p; | |
644 | call_hook(h_burst_client, &hclientinfo); | |
645 | } | |
646 | ||
5cefa1d6 | 647 | RB_DLINK_FOREACH(ptr, global_channel_list.head) |
212380e3 AC |
648 | { |
649 | chptr = ptr->data; | |
650 | ||
651 | if(*chptr->chname != '#') | |
652 | continue; | |
653 | ||
5203cba5 | 654 | cur_len = mlen = sprintf(buf, ":%s SJOIN %ld %s %s :", me.id, |
212380e3 AC |
655 | (long) chptr->channelts, chptr->chname, |
656 | channel_modes(chptr, client_p)); | |
657 | ||
658 | t = buf + mlen; | |
659 | ||
5cefa1d6 | 660 | RB_DLINK_FOREACH(uptr, chptr->members.head) |
212380e3 AC |
661 | { |
662 | msptr = uptr->data; | |
663 | ||
664 | tlen = strlen(use_id(msptr->client_p)) + 1; | |
665 | if(is_chanop(msptr)) | |
666 | tlen++; | |
667 | if(is_voiced(msptr)) | |
668 | tlen++; | |
669 | ||
670 | if(cur_len + tlen >= BUFSIZE - 3) | |
671 | { | |
672 | *(t-1) = '\0'; | |
673 | sendto_one(client_p, "%s", buf); | |
674 | cur_len = mlen; | |
675 | t = buf + mlen; | |
676 | } | |
677 | ||
5203cba5 | 678 | sprintf(t, "%s%s ", find_channel_status(msptr, 1), |
212380e3 AC |
679 | use_id(msptr->client_p)); |
680 | ||
681 | cur_len += tlen; | |
682 | t += tlen; | |
683 | } | |
684 | ||
330fc5c1 | 685 | if (rb_dlink_list_length(&chptr->members) > 0) |
212380e3 AC |
686 | { |
687 | /* remove trailing space */ | |
688 | *(t-1) = '\0'; | |
689 | } | |
690 | sendto_one(client_p, "%s", buf); | |
691 | ||
330fc5c1 | 692 | if(rb_dlink_list_length(&chptr->banlist) > 0) |
212380e3 AC |
693 | burst_modes_TS6(client_p, chptr, &chptr->banlist, 'b'); |
694 | ||
695 | if(IsCapable(client_p, CAP_EX) && | |
330fc5c1 | 696 | rb_dlink_list_length(&chptr->exceptlist) > 0) |
212380e3 AC |
697 | burst_modes_TS6(client_p, chptr, &chptr->exceptlist, 'e'); |
698 | ||
699 | if(IsCapable(client_p, CAP_IE) && | |
330fc5c1 | 700 | rb_dlink_list_length(&chptr->invexlist) > 0) |
212380e3 AC |
701 | burst_modes_TS6(client_p, chptr, &chptr->invexlist, 'I'); |
702 | ||
330fc5c1 | 703 | if(rb_dlink_list_length(&chptr->quietlist) > 0) |
212380e3 AC |
704 | burst_modes_TS6(client_p, chptr, &chptr->quietlist, 'q'); |
705 | ||
706 | if(IsCapable(client_p, CAP_TB) && chptr->topic != NULL) | |
707 | sendto_one(client_p, ":%s TB %s %ld %s%s:%s", | |
708 | me.id, chptr->chname, (long) chptr->topic_time, | |
709 | ConfigChannel.burst_topicwho ? chptr->topic_info : "", | |
710 | ConfigChannel.burst_topicwho ? " " : "", | |
711 | chptr->topic); | |
712 | ||
084ecbe0 | 713 | if(IsCapable(client_p, CAP_MLOCK)) |
6b8db2da | 714 | sendto_one(client_p, ":%s MLOCK %ld %s :%s", |
084ecbe0 | 715 | me.id, (long) chptr->channelts, chptr->chname, |
6b8db2da | 716 | EmptyString(chptr->mode_lock) ? "" : chptr->mode_lock); |
084ecbe0 | 717 | |
212380e3 AC |
718 | hchaninfo.chptr = chptr; |
719 | call_hook(h_burst_channel, &hchaninfo); | |
720 | } | |
721 | ||
722 | hclientinfo.target = NULL; | |
723 | call_hook(h_burst_finished, &hclientinfo); | |
724 | } | |
725 | ||
726 | /* | |
727 | * show_capabilities - show current server capabilities | |
728 | * | |
729 | * inputs - pointer to an struct Client | |
730 | * output - pointer to static string | |
731 | * side effects - build up string representing capabilities of server listed | |
732 | */ | |
733 | const char * | |
734 | show_capabilities(struct Client *target_p) | |
735 | { | |
736 | static char msgbuf[BUFSIZE]; | |
346fba92 AC |
737 | |
738 | *msgbuf = '\0'; | |
212380e3 | 739 | |
f4a759c5 VY |
740 | if(has_id(target_p)) |
741 | rb_strlcpy(msgbuf, " TS6", sizeof(msgbuf)); | |
f4a759c5 VY |
742 | |
743 | if(IsSSL(target_p)) | |
744 | rb_strlcat(msgbuf, " SSL", sizeof(msgbuf)); | |
212380e3 AC |
745 | |
746 | if(!IsServer(target_p) || !target_p->serv->caps) /* short circuit if no caps */ | |
f4a759c5 | 747 | return msgbuf + 1; |
212380e3 | 748 | |
89fd463e | 749 | rb_strlcat(msgbuf, " ", sizeof(msgbuf)); |
346fba92 | 750 | rb_strlcat(msgbuf, capability_index_list(serv_capindex, target_p->serv->caps), sizeof(msgbuf)); |
212380e3 | 751 | |
f4a759c5 | 752 | return msgbuf + 1; |
212380e3 AC |
753 | } |
754 | ||
755 | /* | |
756 | * server_estab | |
757 | * | |
758 | * inputs - pointer to a struct Client | |
759 | * output - | |
760 | * side effects - | |
761 | */ | |
762 | int | |
763 | server_estab(struct Client *client_p) | |
764 | { | |
765 | struct Client *target_p; | |
766 | struct server_conf *server_p; | |
767 | hook_data_client hdata; | |
768 | char *host; | |
330fc5c1 | 769 | rb_dlink_node *ptr; |
6c528b8e | 770 | char note[HOSTLEN + 15]; |
212380e3 AC |
771 | |
772 | s_assert(NULL != client_p); | |
773 | if(client_p == NULL) | |
774 | return -1; | |
212380e3 AC |
775 | |
776 | host = client_p->name; | |
777 | ||
778 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
779 | { | |
780 | /* This shouldn't happen, better tell the ops... -A1kmm */ | |
781 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
782 | "Warning: Lost connect{} block for server %s!", host); | |
783 | return exit_client(client_p, client_p, client_p, "Lost connect{} block!"); | |
784 | } | |
785 | ||
786 | /* We shouldn't have to check this, it should already done before | |
787 | * server_estab is called. -A1kmm | |
788 | */ | |
789 | if(client_p->localClient->passwd) | |
790 | { | |
791 | memset(client_p->localClient->passwd, 0, strlen(client_p->localClient->passwd)); | |
637c4932 | 792 | rb_free(client_p->localClient->passwd); |
212380e3 AC |
793 | client_p->localClient->passwd = NULL; |
794 | } | |
795 | ||
796 | /* Its got identd , since its a server */ | |
797 | SetGotId(client_p); | |
798 | ||
212380e3 AC |
799 | if(IsUnknown(client_p)) |
800 | { | |
ff0cc1e6 | 801 | /* the server may be linking based on certificate fingerprint now. --nenolod */ |
55abcbb2 | 802 | sendto_one(client_p, "PASS %s TS %d :%s", |
ff0cc1e6 | 803 | EmptyString(server_p->spasswd) ? "*" : server_p->spasswd, TS_CURRENT, me.id); |
212380e3 AC |
804 | |
805 | /* pass info to new server */ | |
806 | send_capabilities(client_p, default_server_capabs | |
807 | | (ServerConfCompressed(server_p) ? CAP_ZIP_SUPPORTED : 0) | |
808 | | (ServerConfTb(server_p) ? CAP_TB : 0)); | |
809 | ||
810 | sendto_one(client_p, "SERVER %s 1 :%s%s", | |
811 | me.name, | |
812 | ConfigServerHide.hidden ? "(H) " : "", | |
813 | (me.info[0]) ? (me.info) : "IRCers United"); | |
814 | } | |
815 | ||
6c528b8e | 816 | if(!rb_set_buffers(client_p->localClient->F, READBUF_SIZE)) |
825ddf13 | 817 | ilog_error("rb_set_buffers failed for server"); |
212380e3 | 818 | |
c6d72037 | 819 | /* Enable compression now */ |
f4a759c5 VY |
820 | if(IsCapable(client_p, CAP_ZIP)) |
821 | { | |
822 | start_zlib_session(client_p); | |
823 | } | |
8982edb0 | 824 | sendto_one(client_p, "SVINFO %d %d 0 :%ld", TS_CURRENT, TS_MIN, (long int)rb_current_time()); |
212380e3 AC |
825 | |
826 | client_p->servptr = &me; | |
827 | ||
828 | if(IsAnyDead(client_p)) | |
829 | return CLIENT_EXITED; | |
830 | ||
831 | SetServer(client_p); | |
832 | ||
330fc5c1 | 833 | rb_dlinkAdd(client_p, &client_p->lnode, &me.serv->servers); |
330fc5c1 AC |
834 | rb_dlinkMoveNode(&client_p->localClient->tnode, &unknown_list, &serv_list); |
835 | rb_dlinkAddTailAlloc(client_p, &global_serv_list); | |
212380e3 AC |
836 | |
837 | if(has_id(client_p)) | |
838 | add_to_id_hash(client_p->id, client_p); | |
839 | ||
840 | add_to_client_hash(client_p->name, client_p); | |
841 | /* doesnt duplicate client_p->serv if allocated this struct already */ | |
842 | make_server(client_p); | |
212380e3 AC |
843 | |
844 | client_p->serv->caps = client_p->localClient->caps; | |
845 | ||
846 | if(client_p->localClient->fullcaps) | |
847 | { | |
47a03750 | 848 | client_p->serv->fullcaps = rb_strdup(client_p->localClient->fullcaps); |
637c4932 | 849 | rb_free(client_p->localClient->fullcaps); |
212380e3 AC |
850 | client_p->localClient->fullcaps = NULL; |
851 | } | |
852 | ||
994544c2 | 853 | client_p->serv->nameinfo = scache_connect(client_p->name, client_p->info, IsHidden(client_p)); |
e3354945 | 854 | client_p->localClient->firsttime = rb_current_time(); |
212380e3 AC |
855 | /* fixing eob timings.. -gnp */ |
856 | ||
330fc5c1 | 857 | if((rb_dlink_list_length(&lclient_list) + rb_dlink_list_length(&serv_list)) > |
2f15f871 | 858 | (unsigned long)MaxConnectionCount) |
55abcbb2 | 859 | MaxConnectionCount = rb_dlink_list_length(&lclient_list) + |
330fc5c1 | 860 | rb_dlink_list_length(&serv_list); |
2f15f871 | 861 | |
212380e3 AC |
862 | /* Show the real host/IP to admins */ |
863 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
864 | "Link with %s established: (%s) link", | |
b3ebc7ab | 865 | client_p->name, |
212380e3 AC |
866 | show_capabilities(client_p)); |
867 | ||
868 | ilog(L_SERVER, "Link with %s established: (%s) link", | |
869 | log_client_name(client_p, SHOW_IP), show_capabilities(client_p)); | |
870 | ||
871 | hdata.client = &me; | |
872 | hdata.target = client_p; | |
873 | call_hook(h_server_introduced, &hdata); | |
874 | ||
5203cba5 | 875 | snprintf(note, sizeof(note), "Server: %s", client_p->name); |
c6d72037 | 876 | rb_note(client_p->localClient->F, note); |
212380e3 AC |
877 | |
878 | /* | |
879 | ** Old sendto_serv_but_one() call removed because we now | |
880 | ** need to send different names to different servers | |
881 | ** (domain name matching) Send new server to other servers. | |
882 | */ | |
5cefa1d6 | 883 | RB_DLINK_FOREACH(ptr, serv_list.head) |
212380e3 AC |
884 | { |
885 | target_p = ptr->data; | |
886 | ||
887 | if(target_p == client_p) | |
888 | continue; | |
889 | ||
890 | if(has_id(target_p) && has_id(client_p)) | |
891 | { | |
892 | sendto_one(target_p, ":%s SID %s 2 %s :%s%s", | |
893 | me.id, client_p->name, client_p->id, | |
894 | IsHidden(client_p) ? "(H) " : "", client_p->info); | |
895 | ||
ce4fa447 | 896 | if(!EmptyString(client_p->serv->fullcaps)) |
212380e3 AC |
897 | sendto_one(target_p, ":%s ENCAP * GCAP :%s", |
898 | client_p->id, client_p->serv->fullcaps); | |
899 | } | |
900 | else | |
901 | { | |
902 | sendto_one(target_p, ":%s SERVER %s 2 :%s%s", | |
903 | me.name, client_p->name, | |
904 | IsHidden(client_p) ? "(H) " : "", client_p->info); | |
905 | ||
ce4fa447 | 906 | if(!EmptyString(client_p->serv->fullcaps)) |
212380e3 AC |
907 | sendto_one(target_p, ":%s ENCAP * GCAP :%s", |
908 | client_p->name, client_p->serv->fullcaps); | |
909 | } | |
910 | } | |
911 | ||
912 | /* | |
913 | ** Pass on my client information to the new server | |
914 | ** | |
915 | ** First, pass only servers (idea is that if the link gets | |
916 | ** cancelled beacause the server was already there, | |
917 | ** there are no NICK's to be cancelled...). Of course, | |
918 | ** if cancellation occurs, all this info is sent anyway, | |
919 | ** and I guess the link dies when a read is attempted...? --msa | |
55abcbb2 | 920 | ** |
212380e3 AC |
921 | ** Note: Link cancellation to occur at this point means |
922 | ** that at least two servers from my fragment are building | |
923 | ** up connection this other fragment at the same time, it's | |
924 | ** a race condition, not the normal way of operation... | |
925 | ** | |
926 | ** ALSO NOTE: using the get_client_name for server names-- | |
927 | ** see previous *WARNING*!!! (Also, original inpath | |
928 | ** is destroyed...) | |
929 | */ | |
5cefa1d6 | 930 | RB_DLINK_FOREACH(ptr, global_serv_list.head) |
212380e3 AC |
931 | { |
932 | target_p = ptr->data; | |
933 | ||
934 | /* target_p->from == target_p for target_p == client_p */ | |
935 | if(IsMe(target_p) || target_p->from == client_p) | |
936 | continue; | |
937 | ||
938 | /* presumption, if target has an id, so does its uplink */ | |
939 | if(has_id(client_p) && has_id(target_p)) | |
940 | sendto_one(client_p, ":%s SID %s %d %s :%s%s", | |
66c8fdd2 | 941 | target_p->servptr->id, target_p->name, |
212380e3 AC |
942 | target_p->hopcount + 1, target_p->id, |
943 | IsHidden(target_p) ? "(H) " : "", target_p->info); | |
944 | else | |
945 | sendto_one(client_p, ":%s SERVER %s %d :%s%s", | |
66c8fdd2 | 946 | target_p->servptr->name, |
212380e3 AC |
947 | target_p->name, target_p->hopcount + 1, |
948 | IsHidden(target_p) ? "(H) " : "", target_p->info); | |
949 | ||
ce4fa447 | 950 | if(!EmptyString(target_p->serv->fullcaps)) |
212380e3 AC |
951 | sendto_one(client_p, ":%s ENCAP * GCAP :%s", |
952 | get_id(target_p, client_p), | |
953 | target_p->serv->fullcaps); | |
954 | } | |
955 | ||
431a1a27 JT |
956 | if(IsCapable(client_p, CAP_BAN)) |
957 | burst_ban(client_p); | |
958 | ||
7bb8c655 | 959 | burst_TS6(client_p); |
212380e3 AC |
960 | |
961 | /* Always send a PING after connect burst is done */ | |
962 | sendto_one(client_p, "PING :%s", get_id(&me, client_p)); | |
963 | ||
964 | free_pre_client(client_p); | |
965 | ||
0bd120ed | 966 | send_pop_queue(client_p); |
212380e3 AC |
967 | |
968 | return 0; | |
212380e3 AC |
969 | } |
970 | ||
971 | /* | |
972 | * New server connection code | |
973 | * Based upon the stuff floating about in s_bsd.c | |
974 | * -- adrian | |
975 | */ | |
976 | ||
977 | /* | |
978 | * serv_connect() - initiate a server connection | |
979 | * | |
5203cba5 | 980 | * inputs - pointer to conf |
212380e3 AC |
981 | * - pointer to client doing the connet |
982 | * output - | |
983 | * side effects - | |
984 | * | |
985 | * This code initiates a connection to a server. It first checks to make | |
986 | * sure the given server exists. If this is the case, it creates a socket, | |
987 | * creates a client, saves the socket information in the client, and | |
b2f0da88 | 988 | * initiates a connection to the server through rb_connect_tcp(). The |
212380e3 AC |
989 | * completion of this goes through serv_completed_connection(). |
990 | * | |
991 | * We return 1 if the connection is attempted, since we don't know whether | |
992 | * it suceeded or not, and 0 if it fails in here somewhere. | |
993 | */ | |
994 | int | |
995 | serv_connect(struct server_conf *server_p, struct Client *by) | |
996 | { | |
997 | struct Client *client_p; | |
1d02144f | 998 | struct rb_sockaddr_storage myipnum; |
6c528b8e | 999 | char note[HOSTLEN + 10]; |
1d02144f | 1000 | rb_fde_t *F; |
212380e3 AC |
1001 | |
1002 | s_assert(server_p != NULL); | |
1003 | if(server_p == NULL) | |
1004 | return 0; | |
1005 | ||
1d02144f AC |
1006 | /* log */ |
1007 | rb_inet_ntop_sock((struct sockaddr *)&server_p->my_ipnum, buf, sizeof(buf)); | |
1008 | ilog(L_SERVER, "Connect to *[%s] @%s", server_p->name, buf); | |
1009 | ||
212380e3 AC |
1010 | /* |
1011 | * Make sure this server isn't already connected | |
1012 | */ | |
1013 | if((client_p = find_server(NULL, server_p->name))) | |
1014 | { | |
1015 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1016 | "Server %s already present from %s", | |
b3ebc7ab | 1017 | server_p->name, client_p->name); |
212380e3 AC |
1018 | if(by && IsPerson(by) && !MyClient(by)) |
1019 | sendto_one_notice(by, ":Server %s already present from %s", | |
b3ebc7ab | 1020 | server_p->name, client_p->name); |
212380e3 AC |
1021 | return 0; |
1022 | } | |
1023 | ||
1024 | /* create a socket for the server connection */ | |
1d02144f | 1025 | if((F = rb_socket(GET_SS_FAMILY(&server_p->my_ipnum), SOCK_STREAM, 0, NULL)) == NULL) |
212380e3 | 1026 | { |
825ddf13 | 1027 | ilog_error("opening a stream socket"); |
212380e3 AC |
1028 | return 0; |
1029 | } | |
1030 | ||
1d02144f | 1031 | /* servernames are always guaranteed under HOSTLEN chars */ |
5203cba5 | 1032 | snprintf(note, sizeof(note), "Server: %s", server_p->name); |
6c528b8e | 1033 | rb_note(F, note); |
212380e3 AC |
1034 | |
1035 | /* Create a local client */ | |
1036 | client_p = make_client(NULL); | |
1037 | ||
1d02144f | 1038 | /* Copy in the server, hostname, fd */ |
f427c8b0 VY |
1039 | rb_strlcpy(client_p->name, server_p->name, sizeof(client_p->name)); |
1040 | rb_strlcpy(client_p->host, server_p->host, sizeof(client_p->host)); | |
1d02144f | 1041 | rb_strlcpy(client_p->sockhost, buf, sizeof(client_p->sockhost)); |
6c528b8e | 1042 | client_p->localClient->F = F; |
1d02144f | 1043 | /* shove the port number into the sockaddr */ |
d86692fa | 1044 | SET_SS_PORT(&server_p->my_ipnum, htons(server_p->port)); |
212380e3 AC |
1045 | |
1046 | /* | |
1047 | * Set up the initial server evilness, ripped straight from | |
1048 | * connect_server(), so don't blame me for it being evil. | |
1049 | * -- adrian | |
1050 | */ | |
1051 | ||
6c528b8e | 1052 | if(!rb_set_buffers(client_p->localClient->F, READBUF_SIZE)) |
212380e3 | 1053 | { |
825ddf13 | 1054 | ilog_error("setting the buffer size for a server connection"); |
212380e3 AC |
1055 | } |
1056 | ||
1057 | /* | |
1058 | * Attach config entries to client here rather than in | |
1059 | * serv_connect_callback(). This to avoid null pointer references. | |
1060 | */ | |
1061 | attach_server_conf(client_p, server_p); | |
1062 | ||
1063 | /* | |
1064 | * at this point we have a connection in progress and C/N lines | |
1065 | * attached to the client, the socket info should be saved in the | |
1066 | * client and it should either be resolved or have a valid address. | |
1067 | * | |
1068 | * The socket has been connected or connect is in progress. | |
1069 | */ | |
1070 | make_server(client_p); | |
1d02144f AC |
1071 | if(by && IsClient(by)) |
1072 | strcpy(client_p->serv->by, by->name); | |
212380e3 | 1073 | else |
1d02144f AC |
1074 | strcpy(client_p->serv->by, "AutoConn."); |
1075 | ||
212380e3 | 1076 | SetConnecting(client_p); |
330fc5c1 | 1077 | rb_dlinkAddTail(client_p, &client_p->node, &global_client_list); |
212380e3 | 1078 | |
1d02144f | 1079 | if(ServerConfVhosted(server_p)) |
212380e3 | 1080 | { |
1d02144f | 1081 | memcpy(&myipnum, &server_p->my_ipnum, sizeof(myipnum)); |
1d02144f | 1082 | SET_SS_FAMILY(&myipnum, GET_SS_FAMILY(&server_p->my_ipnum)); |
d86692fa | 1083 | SET_SS_PORT(&myipnum, 0); |
abe5dd20 | 1084 | |
abe5dd20 | 1085 | } |
1d02144f | 1086 | else if(GET_SS_FAMILY(&server_p->my_ipnum) == AF_INET && ServerInfo.specific_ipv4_vhost) |
212380e3 | 1087 | { |
1d02144f | 1088 | memcpy(&myipnum, &ServerInfo.ip, sizeof(myipnum)); |
1d02144f | 1089 | SET_SS_FAMILY(&myipnum, AF_INET); |
d86692fa | 1090 | SET_SS_PORT(&myipnum, 0); |
1d02144f AC |
1091 | SET_SS_LEN(&myipnum, sizeof(struct sockaddr_in)); |
1092 | } | |
17648928 | 1093 | |
ccda6e3f | 1094 | #ifdef RB_IPV6 |
1d02144f AC |
1095 | else if((GET_SS_FAMILY(&server_p->my_ipnum) == AF_INET6) && ServerInfo.specific_ipv6_vhost) |
1096 | { | |
1097 | memcpy(&myipnum, &ServerInfo.ip6, sizeof(myipnum)); | |
1d02144f | 1098 | SET_SS_FAMILY(&myipnum, AF_INET6); |
d86692fa | 1099 | SET_SS_PORT(&myipnum, 0); |
1d02144f AC |
1100 | SET_SS_LEN(&myipnum, sizeof(struct sockaddr_in6)); |
1101 | } | |
17648928 | 1102 | #endif |
1d02144f AC |
1103 | else |
1104 | { | |
1105 | if(ServerConfSSL(server_p)) | |
1106 | { | |
1107 | rb_connect_tcp(client_p->localClient->F, | |
1108 | (struct sockaddr *)&server_p->my_ipnum, NULL, 0, | |
1109 | serv_connect_ssl_callback, client_p, | |
1110 | ConfigFileEntry.connect_timeout); | |
1111 | } | |
1112 | else | |
1113 | rb_connect_tcp(client_p->localClient->F, | |
1114 | (struct sockaddr *)&server_p->my_ipnum, NULL, 0, | |
1115 | serv_connect_callback, client_p, | |
1116 | ConfigFileEntry.connect_timeout); | |
1117 | ||
abe5dd20 JT |
1118 | return 1; |
1119 | } | |
1d02144f AC |
1120 | if(ServerConfSSL(server_p)) |
1121 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&server_p->my_ipnum, | |
1122 | (struct sockaddr *)&myipnum, | |
1123 | GET_SS_LEN(&myipnum), serv_connect_ssl_callback, client_p, | |
1124 | ConfigFileEntry.connect_timeout); | |
1125 | else | |
1126 | rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&server_p->my_ipnum, | |
1127 | (struct sockaddr *)&myipnum, | |
1128 | GET_SS_LEN(&myipnum), serv_connect_callback, client_p, | |
1129 | ConfigFileEntry.connect_timeout); | |
1130 | ||
1131 | return 1; | |
212380e3 AC |
1132 | } |
1133 | ||
f4a759c5 VY |
1134 | static void |
1135 | serv_connect_ssl_callback(rb_fde_t *F, int status, void *data) | |
1136 | { | |
1137 | struct Client *client_p = data; | |
1138 | rb_fde_t *xF[2]; | |
9ec51326 | 1139 | rb_connect_sockaddr(F, (struct sockaddr *)&client_p->localClient->ip, sizeof(client_p->localClient->ip)); |
f4a759c5 VY |
1140 | if(status != RB_OK) |
1141 | { | |
9ec51326 JT |
1142 | /* Print error message, just like non-SSL. */ |
1143 | serv_connect_callback(F, status, data); | |
f4a759c5 VY |
1144 | return; |
1145 | } | |
eda22d87 JT |
1146 | if(rb_socketpair(AF_UNIX, SOCK_STREAM, 0, &xF[0], &xF[1], "Outgoing ssld connection") == -1) |
1147 | { | |
1148 | ilog_error("rb_socketpair failed for server"); | |
1149 | serv_connect_callback(F, RB_ERROR, data); | |
1150 | return; | |
55abcbb2 | 1151 | |
eda22d87 | 1152 | } |
f4a759c5 | 1153 | client_p->localClient->F = xF[0]; |
f4a759c5 | 1154 | |
de7cf7e0 | 1155 | client_p->localClient->ssl_ctl = start_ssld_connect(F, xF[1], connid_get(client_p)); |
5e270e7d SA |
1156 | if(!client_p->localClient->ssl_ctl) |
1157 | { | |
1158 | serv_connect_callback(client_p->localClient->F, RB_ERROR, data); | |
1159 | return; | |
1160 | } | |
f4a759c5 | 1161 | SetSSL(client_p); |
39452169 | 1162 | serv_connect_callback(client_p->localClient->F, RB_OK, client_p); |
c6d72037 VY |
1163 | } |
1164 | ||
212380e3 AC |
1165 | /* |
1166 | * serv_connect_callback() - complete a server connection. | |
55abcbb2 | 1167 | * |
212380e3 AC |
1168 | * This routine is called after the server connection attempt has |
1169 | * completed. If unsucessful, an error is sent to ops and the client | |
1170 | * is closed. If sucessful, it goes through the initialisation/check | |
1171 | * procedures, the capabilities are sent, and the socket is then | |
1172 | * marked for reading. | |
1173 | */ | |
1174 | static void | |
6c528b8e | 1175 | serv_connect_callback(rb_fde_t *F, int status, void *data) |
212380e3 AC |
1176 | { |
1177 | struct Client *client_p = data; | |
1178 | struct server_conf *server_p; | |
1179 | char *errstr; | |
1180 | ||
1181 | /* First, make sure its a real client! */ | |
1182 | s_assert(client_p != NULL); | |
6c528b8e | 1183 | s_assert(client_p->localClient->F == F); |
212380e3 AC |
1184 | |
1185 | if(client_p == NULL) | |
1186 | return; | |
1187 | ||
1188 | /* while we were waiting for the callback, its possible this already | |
1189 | * linked in.. --fl | |
1190 | */ | |
1191 | if(find_server(NULL, client_p->name) != NULL) | |
1192 | { | |
1193 | exit_client(client_p, client_p, &me, "Server Exists"); | |
1194 | return; | |
1195 | } | |
1196 | ||
f4a759c5 | 1197 | if(client_p->localClient->ssl_ctl == NULL) |
c6d72037 VY |
1198 | rb_connect_sockaddr(F, (struct sockaddr *)&client_p->localClient->ip, sizeof(client_p->localClient->ip)); |
1199 | ||
212380e3 | 1200 | /* Check the status */ |
6c528b8e | 1201 | if(status != RB_OK) |
212380e3 AC |
1202 | { |
1203 | /* COMM_ERR_TIMEOUT wont have an errno associated with it, | |
1204 | * the others will.. --fl | |
1205 | */ | |
6c528b8e | 1206 | if(status == RB_ERR_TIMEOUT) |
212380e3 AC |
1207 | { |
1208 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1209 | "Error connecting to %s[%s]: %s", | |
55abcbb2 | 1210 | client_p->name, |
212380e3 | 1211 | "255.255.255.255", |
b2f0da88 | 1212 | rb_errstr(status)); |
212380e3 AC |
1213 | ilog(L_SERVER, "Error connecting to %s[%s]: %s", |
1214 | client_p->name, client_p->sockhost, | |
b2f0da88 | 1215 | rb_errstr(status)); |
212380e3 AC |
1216 | } |
1217 | else | |
1218 | { | |
6c528b8e | 1219 | errstr = strerror(rb_get_sockerr(F)); |
212380e3 AC |
1220 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, |
1221 | "Error connecting to %s[%s]: %s (%s)", | |
1222 | client_p->name, | |
212380e3 | 1223 | "255.255.255.255", |
b2f0da88 | 1224 | rb_errstr(status), errstr); |
212380e3 AC |
1225 | ilog(L_SERVER, "Error connecting to %s[%s]: %s (%s)", |
1226 | client_p->name, client_p->sockhost, | |
b2f0da88 | 1227 | rb_errstr(status), errstr); |
212380e3 AC |
1228 | } |
1229 | ||
b2f0da88 | 1230 | exit_client(client_p, client_p, &me, rb_errstr(status)); |
212380e3 AC |
1231 | return; |
1232 | } | |
1233 | ||
1234 | /* COMM_OK, so continue the connection procedure */ | |
1235 | /* Get the C/N lines */ | |
1236 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
1237 | { | |
1238 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, "Lost connect{} block for %s", | |
b3ebc7ab | 1239 | client_p->name); |
212380e3 AC |
1240 | exit_client(client_p, client_p, &me, "Lost connect{} block"); |
1241 | return; | |
1242 | } | |
1243 | ||
1244 | /* Next, send the initial handshake */ | |
1245 | SetHandshake(client_p); | |
1246 | ||
ff0cc1e6 | 1247 | /* the server may be linking based on certificate fingerprint now. --nenolod */ |
55abcbb2 | 1248 | sendto_one(client_p, "PASS %s TS %d :%s", |
ff0cc1e6 | 1249 | EmptyString(server_p->spasswd) ? "*" : server_p->spasswd, TS_CURRENT, me.id); |
212380e3 AC |
1250 | |
1251 | /* pass my info to the new server */ | |
1252 | send_capabilities(client_p, default_server_capabs | |
1253 | | (ServerConfCompressed(server_p) ? CAP_ZIP_SUPPORTED : 0) | |
1254 | | (ServerConfTb(server_p) ? CAP_TB : 0)); | |
1255 | ||
1256 | sendto_one(client_p, "SERVER %s 1 :%s%s", | |
1257 | me.name, | |
1258 | ConfigServerHide.hidden ? "(H) " : "", me.info); | |
1259 | ||
55abcbb2 | 1260 | /* |
212380e3 AC |
1261 | * If we've been marked dead because a send failed, just exit |
1262 | * here now and save everyone the trouble of us ever existing. | |
1263 | */ | |
1264 | if(IsAnyDead(client_p)) | |
1265 | { | |
1266 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1267 | "%s went dead during handshake", client_p->name); | |
1268 | exit_client(client_p, client_p, &me, "Went dead during handshake"); | |
1269 | return; | |
1270 | } | |
1271 | ||
1272 | /* don't move to serv_list yet -- we haven't sent a burst! */ | |
1273 | ||
1274 | /* If we get here, we're ok, so lets start reading some data */ | |
6c528b8e | 1275 | read_packet(F, client_p); |
212380e3 | 1276 | } |