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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; |
53789fdd | 154 | static SSL_OPEN_CB serv_connect_ssl_open_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; |
84e3e445 SA |
351 | bool name_matched = false; |
352 | bool host_matched = false; | |
353 | bool certfp_failed = false; | |
212380e3 AC |
354 | |
355 | s_assert(NULL != client_p); | |
356 | if(client_p == NULL) | |
357 | return error; | |
358 | ||
359 | if(!(client_p->localClient->passwd)) | |
360 | return -2; | |
361 | ||
362 | if(strlen(name) > HOSTLEN) | |
363 | return -4; | |
364 | ||
5cefa1d6 | 365 | RB_DLINK_FOREACH(ptr, server_conf_list.head) |
212380e3 | 366 | { |
d4214e94 SA |
367 | struct rb_sockaddr_storage client_addr; |
368 | ||
212380e3 AC |
369 | tmp_p = ptr->data; |
370 | ||
371 | if(ServerConfIllegal(tmp_p)) | |
372 | continue; | |
373 | ||
374 | if(!match(tmp_p->name, name)) | |
375 | continue; | |
376 | ||
84e3e445 | 377 | name_matched = true; |
212380e3 | 378 | |
d4214e94 SA |
379 | if(rb_inet_pton_sock(client_p->sockhost, (struct sockaddr *)&client_addr) <= 0) |
380 | SET_SS_FAMILY(&client_addr, AF_UNSPEC); | |
381 | ||
382 | if((tmp_p->connect_host && match(tmp_p->connect_host, client_p->host)) | |
383 | || (GET_SS_FAMILY(&client_addr) == GET_SS_FAMILY(&tmp_p->connect4) | |
384 | && comp_with_mask_sock((struct sockaddr *)&client_addr, | |
385 | (struct sockaddr *)&tmp_p->connect4, 32)) | |
386 | #ifdef RB_IPV6 | |
387 | || (GET_SS_FAMILY(&client_addr) == GET_SS_FAMILY(&tmp_p->connect6) | |
388 | && comp_with_mask_sock((struct sockaddr *)&client_addr, | |
389 | (struct sockaddr *)&tmp_p->connect6, 128)) | |
390 | #endif | |
391 | ) | |
212380e3 | 392 | { |
84e3e445 | 393 | host_matched = true; |
212380e3 | 394 | |
ff0cc1e6 | 395 | if(tmp_p->passwd) |
212380e3 | 396 | { |
ff0cc1e6 | 397 | if(ServerConfEncrypted(tmp_p)) |
212380e3 | 398 | { |
e69375f3 JT |
399 | encr = rb_crypt(client_p->localClient->passwd, |
400 | tmp_p->passwd); | |
401 | if(encr != NULL && !strcmp(tmp_p->passwd, encr)) | |
ff0cc1e6 AC |
402 | { |
403 | server_p = tmp_p; | |
404 | break; | |
405 | } | |
406 | else | |
407 | continue; | |
212380e3 | 408 | } |
ff0cc1e6 AC |
409 | else if(strcmp(tmp_p->passwd, client_p->localClient->passwd)) |
410 | continue; | |
212380e3 | 411 | } |
ff0cc1e6 AC |
412 | |
413 | if(tmp_p->certfp) | |
212380e3 | 414 | { |
84e3e445 SA |
415 | if(!client_p->certfp || rb_strcasecmp(tmp_p->certfp, client_p->certfp) != 0) { |
416 | certfp_failed = true; | |
ff0cc1e6 | 417 | continue; |
84e3e445 | 418 | } |
212380e3 | 419 | } |
ff0cc1e6 AC |
420 | |
421 | server_p = tmp_p; | |
422 | break; | |
212380e3 AC |
423 | } |
424 | } | |
425 | ||
426 | if(server_p == NULL) | |
84e3e445 SA |
427 | { |
428 | /* return the most specific error */ | |
429 | if(certfp_failed) | |
430 | error = -6; | |
431 | else if(host_matched) | |
432 | error = -2; | |
433 | else if(name_matched) | |
434 | error = -3; | |
435 | ||
212380e3 | 436 | return error; |
84e3e445 | 437 | } |
212380e3 | 438 | |
f4a759c5 VY |
439 | if(ServerConfSSL(server_p) && client_p->localClient->ssl_ctl == NULL) |
440 | { | |
441 | return -5; | |
c6d72037 VY |
442 | } |
443 | ||
212380e3 AC |
444 | attach_server_conf(client_p, server_p); |
445 | ||
446 | /* clear ZIP/TB if they support but we dont want them */ | |
447 | #ifdef HAVE_LIBZ | |
448 | if(!ServerConfCompressed(server_p)) | |
449 | #endif | |
450 | ClearCap(client_p, CAP_ZIP); | |
451 | ||
452 | if(!ServerConfTb(server_p)) | |
453 | ClearCap(client_p, CAP_TB); | |
454 | ||
455 | return 0; | |
456 | } | |
457 | ||
458 | /* | |
459 | * send_capabilities | |
460 | * | |
461 | * inputs - Client pointer to send to | |
462 | * - int flag of capabilities that this server has | |
463 | * output - NONE | |
464 | * side effects - send the CAPAB line to a server -orabidoo | |
212380e3 AC |
465 | */ |
466 | void | |
346fba92 | 467 | send_capabilities(struct Client *client_p, unsigned int cap_can_send) |
212380e3 | 468 | { |
346fba92 | 469 | sendto_one(client_p, "CAPAB :%s", capability_index_list(serv_capindex, cap_can_send)); |
212380e3 AC |
470 | } |
471 | ||
431a1a27 JT |
472 | static void |
473 | burst_ban(struct Client *client_p) | |
474 | { | |
475 | rb_dlink_node *ptr; | |
476 | struct ConfItem *aconf; | |
477 | const char *type, *oper; | |
478 | /* +5 for !,@,{,} and null */ | |
479 | char operbuf[NICKLEN + USERLEN + HOSTLEN + HOSTLEN + 5]; | |
480 | char *p; | |
481 | size_t melen; | |
482 | ||
483 | melen = strlen(me.name); | |
484 | RB_DLINK_FOREACH(ptr, prop_bans.head) | |
485 | { | |
486 | aconf = ptr->data; | |
487 | ||
488 | /* Skip expired stuff. */ | |
489 | if(aconf->lifetime < rb_current_time()) | |
490 | continue; | |
491 | switch(aconf->status & ~CONF_ILLEGAL) | |
492 | { | |
493 | case CONF_KILL: type = "K"; break; | |
494 | case CONF_DLINE: type = "D"; break; | |
495 | case CONF_XLINE: type = "X"; break; | |
496 | case CONF_RESV_NICK: type = "R"; break; | |
497 | case CONF_RESV_CHANNEL: type = "R"; break; | |
498 | default: | |
499 | continue; | |
500 | } | |
501 | oper = aconf->info.oper; | |
502 | if(aconf->flags & CONF_FLAGS_MYOPER) | |
503 | { | |
504 | /* Our operator{} names may not be meaningful | |
505 | * to other servers, so rewrite to our server | |
506 | * name. | |
507 | */ | |
508 | rb_strlcpy(operbuf, aconf->info.oper, sizeof buf); | |
509 | p = strrchr(operbuf, '{'); | |
ee6da53d JT |
510 | if (p != NULL && |
511 | operbuf + sizeof operbuf - p > (ptrdiff_t)(melen + 2)) | |
431a1a27 JT |
512 | { |
513 | memcpy(p + 1, me.name, melen); | |
514 | p[melen + 1] = '}'; | |
515 | p[melen + 2] = '\0'; | |
516 | oper = operbuf; | |
517 | } | |
518 | } | |
cedb7d05 | 519 | sendto_one(client_p, ":%s BAN %s %s %s %lu %d %d %s :%s%s%s", |
431a1a27 | 520 | me.id, |
431a1a27 JT |
521 | type, |
522 | aconf->user ? aconf->user : "*", aconf->host, | |
523 | (unsigned long)aconf->created, | |
524 | (int)(aconf->hold - aconf->created), | |
525 | (int)(aconf->lifetime - aconf->created), | |
526 | oper, | |
527 | aconf->passwd, | |
528 | aconf->spasswd ? "|" : "", | |
529 | aconf->spasswd ? aconf->spasswd : ""); | |
530 | } | |
531 | } | |
532 | ||
212380e3 AC |
533 | /* burst_modes_TS6() |
534 | * | |
535 | * input - client to burst to, channel name, list to burst, mode flag | |
536 | * output - | |
537 | * side effects - client is sent a list of +b, +e, or +I modes | |
538 | */ | |
539 | static void | |
55abcbb2 | 540 | burst_modes_TS6(struct Client *client_p, struct Channel *chptr, |
330fc5c1 | 541 | rb_dlink_list *list, char flag) |
212380e3 | 542 | { |
330fc5c1 | 543 | rb_dlink_node *ptr; |
212380e3 AC |
544 | struct Ban *banptr; |
545 | char *t; | |
546 | int tlen; | |
547 | int mlen; | |
548 | int cur_len; | |
549 | ||
5203cba5 | 550 | cur_len = mlen = sprintf(buf, ":%s BMASK %ld %s %c :", |
212380e3 AC |
551 | me.id, (long) chptr->channelts, chptr->chname, flag); |
552 | t = buf + mlen; | |
553 | ||
5cefa1d6 | 554 | RB_DLINK_FOREACH(ptr, list->head) |
212380e3 AC |
555 | { |
556 | banptr = ptr->data; | |
557 | ||
7f0fc87d | 558 | tlen = strlen(banptr->banstr) + (banptr->forward ? strlen(banptr->forward) + 1 : 0) + 1; |
212380e3 AC |
559 | |
560 | /* uh oh */ | |
561 | if(cur_len + tlen > BUFSIZE - 3) | |
562 | { | |
563 | /* the one we're trying to send doesnt fit at all! */ | |
564 | if(cur_len == mlen) | |
565 | { | |
566 | s_assert(0); | |
567 | continue; | |
568 | } | |
569 | ||
570 | /* chop off trailing space and send.. */ | |
571 | *(t-1) = '\0'; | |
572 | sendto_one(client_p, "%s", buf); | |
573 | cur_len = mlen; | |
574 | t = buf + mlen; | |
575 | } | |
576 | ||
7f0fc87d | 577 | if (banptr->forward) |
5203cba5 | 578 | sprintf(t, "%s$%s ", banptr->banstr, banptr->forward); |
7f0fc87d | 579 | else |
5203cba5 | 580 | sprintf(t, "%s ", banptr->banstr); |
212380e3 AC |
581 | t += tlen; |
582 | cur_len += tlen; | |
583 | } | |
584 | ||
585 | /* cant ever exit the loop above without having modified buf, | |
586 | * chop off trailing space and send. | |
587 | */ | |
588 | *(t-1) = '\0'; | |
589 | sendto_one(client_p, "%s", buf); | |
590 | } | |
591 | ||
212380e3 AC |
592 | /* |
593 | * burst_TS6 | |
55abcbb2 | 594 | * |
212380e3 AC |
595 | * inputs - client (server) to send nick towards |
596 | * - client to send nick for | |
597 | * output - NONE | |
598 | * side effects - NICK message is sent towards given client_p | |
599 | */ | |
600 | static void | |
601 | burst_TS6(struct Client *client_p) | |
602 | { | |
9744d53e | 603 | char ubuf[BUFSIZE]; |
212380e3 AC |
604 | struct Client *target_p; |
605 | struct Channel *chptr; | |
606 | struct membership *msptr; | |
607 | hook_data_client hclientinfo; | |
608 | hook_data_channel hchaninfo; | |
330fc5c1 AC |
609 | rb_dlink_node *ptr; |
610 | rb_dlink_node *uptr; | |
212380e3 AC |
611 | char *t; |
612 | int tlen, mlen; | |
613 | int cur_len = 0; | |
614 | ||
615 | hclientinfo.client = hchaninfo.client = client_p; | |
616 | ||
5cefa1d6 | 617 | RB_DLINK_FOREACH(ptr, global_client_list.head) |
212380e3 AC |
618 | { |
619 | target_p = ptr->data; | |
620 | ||
621 | if(!IsPerson(target_p)) | |
622 | continue; | |
623 | ||
29c92cf9 | 624 | send_umode(NULL, target_p, 0, ubuf); |
212380e3 AC |
625 | if(!*ubuf) |
626 | { | |
627 | ubuf[0] = '+'; | |
628 | ubuf[1] = '\0'; | |
629 | } | |
630 | ||
bea2295f | 631 | if(IsCapable(client_p, CAP_EUID)) |
212380e3 AC |
632 | sendto_one(client_p, ":%s EUID %s %d %ld %s %s %s %s %s %s %s :%s", |
633 | target_p->servptr->id, target_p->name, | |
55abcbb2 | 634 | target_p->hopcount + 1, |
212380e3 AC |
635 | (long) target_p->tsinfo, ubuf, |
636 | target_p->username, target_p->host, | |
637 | IsIPSpoof(target_p) ? "0" : target_p->sockhost, | |
638 | target_p->id, | |
639 | IsDynSpoof(target_p) ? target_p->orighost : "*", | |
640 | EmptyString(target_p->user->suser) ? "*" : target_p->user->suser, | |
641 | target_p->info); | |
bea2295f | 642 | else |
212380e3 AC |
643 | sendto_one(client_p, ":%s UID %s %d %ld %s %s %s %s %s :%s", |
644 | target_p->servptr->id, target_p->name, | |
55abcbb2 | 645 | target_p->hopcount + 1, |
212380e3 AC |
646 | (long) target_p->tsinfo, ubuf, |
647 | target_p->username, target_p->host, | |
648 | IsIPSpoof(target_p) ? "0" : target_p->sockhost, | |
649 | target_p->id, target_p->info); | |
bea2295f | 650 | |
8eda114a JT |
651 | if(!EmptyString(target_p->certfp)) |
652 | sendto_one(client_p, ":%s ENCAP * CERTFP :%s", | |
653 | use_id(target_p), target_p->certfp); | |
654 | ||
bea2295f | 655 | if(!IsCapable(client_p, CAP_EUID)) |
212380e3 AC |
656 | { |
657 | if(IsDynSpoof(target_p)) | |
658 | sendto_one(client_p, ":%s ENCAP * REALHOST %s", | |
659 | use_id(target_p), target_p->orighost); | |
660 | if(!EmptyString(target_p->user->suser)) | |
661 | sendto_one(client_p, ":%s ENCAP * LOGIN %s", | |
662 | use_id(target_p), target_p->user->suser); | |
663 | } | |
664 | ||
c127b45b | 665 | if(ConfigFileEntry.burst_away && !EmptyString(target_p->user->away)) |
212380e3 AC |
666 | sendto_one(client_p, ":%s AWAY :%s", |
667 | use_id(target_p), | |
c127b45b | 668 | target_p->user->away); |
212380e3 AC |
669 | |
670 | hclientinfo.target = target_p; | |
671 | call_hook(h_burst_client, &hclientinfo); | |
672 | } | |
673 | ||
5cefa1d6 | 674 | RB_DLINK_FOREACH(ptr, global_channel_list.head) |
212380e3 AC |
675 | { |
676 | chptr = ptr->data; | |
677 | ||
678 | if(*chptr->chname != '#') | |
679 | continue; | |
680 | ||
5203cba5 | 681 | cur_len = mlen = sprintf(buf, ":%s SJOIN %ld %s %s :", me.id, |
212380e3 AC |
682 | (long) chptr->channelts, chptr->chname, |
683 | channel_modes(chptr, client_p)); | |
684 | ||
685 | t = buf + mlen; | |
686 | ||
5cefa1d6 | 687 | RB_DLINK_FOREACH(uptr, chptr->members.head) |
212380e3 AC |
688 | { |
689 | msptr = uptr->data; | |
690 | ||
691 | tlen = strlen(use_id(msptr->client_p)) + 1; | |
692 | if(is_chanop(msptr)) | |
693 | tlen++; | |
694 | if(is_voiced(msptr)) | |
695 | tlen++; | |
696 | ||
697 | if(cur_len + tlen >= BUFSIZE - 3) | |
698 | { | |
699 | *(t-1) = '\0'; | |
700 | sendto_one(client_p, "%s", buf); | |
701 | cur_len = mlen; | |
702 | t = buf + mlen; | |
703 | } | |
704 | ||
5203cba5 | 705 | sprintf(t, "%s%s ", find_channel_status(msptr, 1), |
212380e3 AC |
706 | use_id(msptr->client_p)); |
707 | ||
708 | cur_len += tlen; | |
709 | t += tlen; | |
710 | } | |
711 | ||
330fc5c1 | 712 | if (rb_dlink_list_length(&chptr->members) > 0) |
212380e3 AC |
713 | { |
714 | /* remove trailing space */ | |
715 | *(t-1) = '\0'; | |
716 | } | |
717 | sendto_one(client_p, "%s", buf); | |
718 | ||
330fc5c1 | 719 | if(rb_dlink_list_length(&chptr->banlist) > 0) |
212380e3 AC |
720 | burst_modes_TS6(client_p, chptr, &chptr->banlist, 'b'); |
721 | ||
722 | if(IsCapable(client_p, CAP_EX) && | |
330fc5c1 | 723 | rb_dlink_list_length(&chptr->exceptlist) > 0) |
212380e3 AC |
724 | burst_modes_TS6(client_p, chptr, &chptr->exceptlist, 'e'); |
725 | ||
726 | if(IsCapable(client_p, CAP_IE) && | |
330fc5c1 | 727 | rb_dlink_list_length(&chptr->invexlist) > 0) |
212380e3 AC |
728 | burst_modes_TS6(client_p, chptr, &chptr->invexlist, 'I'); |
729 | ||
330fc5c1 | 730 | if(rb_dlink_list_length(&chptr->quietlist) > 0) |
212380e3 AC |
731 | burst_modes_TS6(client_p, chptr, &chptr->quietlist, 'q'); |
732 | ||
733 | if(IsCapable(client_p, CAP_TB) && chptr->topic != NULL) | |
734 | sendto_one(client_p, ":%s TB %s %ld %s%s:%s", | |
735 | me.id, chptr->chname, (long) chptr->topic_time, | |
736 | ConfigChannel.burst_topicwho ? chptr->topic_info : "", | |
737 | ConfigChannel.burst_topicwho ? " " : "", | |
738 | chptr->topic); | |
739 | ||
084ecbe0 | 740 | if(IsCapable(client_p, CAP_MLOCK)) |
6b8db2da | 741 | sendto_one(client_p, ":%s MLOCK %ld %s :%s", |
084ecbe0 | 742 | me.id, (long) chptr->channelts, chptr->chname, |
6b8db2da | 743 | EmptyString(chptr->mode_lock) ? "" : chptr->mode_lock); |
084ecbe0 | 744 | |
212380e3 AC |
745 | hchaninfo.chptr = chptr; |
746 | call_hook(h_burst_channel, &hchaninfo); | |
747 | } | |
748 | ||
749 | hclientinfo.target = NULL; | |
750 | call_hook(h_burst_finished, &hclientinfo); | |
751 | } | |
752 | ||
753 | /* | |
754 | * show_capabilities - show current server capabilities | |
755 | * | |
756 | * inputs - pointer to an struct Client | |
757 | * output - pointer to static string | |
758 | * side effects - build up string representing capabilities of server listed | |
759 | */ | |
760 | const char * | |
761 | show_capabilities(struct Client *target_p) | |
762 | { | |
763 | static char msgbuf[BUFSIZE]; | |
346fba92 AC |
764 | |
765 | *msgbuf = '\0'; | |
212380e3 | 766 | |
f4a759c5 VY |
767 | if(has_id(target_p)) |
768 | rb_strlcpy(msgbuf, " TS6", sizeof(msgbuf)); | |
f4a759c5 VY |
769 | |
770 | if(IsSSL(target_p)) | |
771 | rb_strlcat(msgbuf, " SSL", sizeof(msgbuf)); | |
212380e3 AC |
772 | |
773 | if(!IsServer(target_p) || !target_p->serv->caps) /* short circuit if no caps */ | |
f4a759c5 | 774 | return msgbuf + 1; |
212380e3 | 775 | |
89fd463e | 776 | rb_strlcat(msgbuf, " ", sizeof(msgbuf)); |
346fba92 | 777 | rb_strlcat(msgbuf, capability_index_list(serv_capindex, target_p->serv->caps), sizeof(msgbuf)); |
212380e3 | 778 | |
f4a759c5 | 779 | return msgbuf + 1; |
212380e3 AC |
780 | } |
781 | ||
782 | /* | |
783 | * server_estab | |
784 | * | |
785 | * inputs - pointer to a struct Client | |
786 | * output - | |
787 | * side effects - | |
788 | */ | |
789 | int | |
790 | server_estab(struct Client *client_p) | |
791 | { | |
792 | struct Client *target_p; | |
793 | struct server_conf *server_p; | |
794 | hook_data_client hdata; | |
795 | char *host; | |
330fc5c1 | 796 | rb_dlink_node *ptr; |
6c528b8e | 797 | char note[HOSTLEN + 15]; |
212380e3 AC |
798 | |
799 | s_assert(NULL != client_p); | |
800 | if(client_p == NULL) | |
801 | return -1; | |
212380e3 AC |
802 | |
803 | host = client_p->name; | |
804 | ||
805 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
806 | { | |
807 | /* This shouldn't happen, better tell the ops... -A1kmm */ | |
808 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
809 | "Warning: Lost connect{} block for server %s!", host); | |
810 | return exit_client(client_p, client_p, client_p, "Lost connect{} block!"); | |
811 | } | |
812 | ||
813 | /* We shouldn't have to check this, it should already done before | |
814 | * server_estab is called. -A1kmm | |
815 | */ | |
816 | if(client_p->localClient->passwd) | |
817 | { | |
818 | memset(client_p->localClient->passwd, 0, strlen(client_p->localClient->passwd)); | |
637c4932 | 819 | rb_free(client_p->localClient->passwd); |
212380e3 AC |
820 | client_p->localClient->passwd = NULL; |
821 | } | |
822 | ||
823 | /* Its got identd , since its a server */ | |
824 | SetGotId(client_p); | |
825 | ||
212380e3 AC |
826 | if(IsUnknown(client_p)) |
827 | { | |
ff0cc1e6 | 828 | /* the server may be linking based on certificate fingerprint now. --nenolod */ |
55abcbb2 | 829 | sendto_one(client_p, "PASS %s TS %d :%s", |
ff0cc1e6 | 830 | EmptyString(server_p->spasswd) ? "*" : server_p->spasswd, TS_CURRENT, me.id); |
212380e3 AC |
831 | |
832 | /* pass info to new server */ | |
833 | send_capabilities(client_p, default_server_capabs | |
834 | | (ServerConfCompressed(server_p) ? CAP_ZIP_SUPPORTED : 0) | |
835 | | (ServerConfTb(server_p) ? CAP_TB : 0)); | |
836 | ||
837 | sendto_one(client_p, "SERVER %s 1 :%s%s", | |
838 | me.name, | |
839 | ConfigServerHide.hidden ? "(H) " : "", | |
840 | (me.info[0]) ? (me.info) : "IRCers United"); | |
841 | } | |
842 | ||
6c528b8e | 843 | if(!rb_set_buffers(client_p->localClient->F, READBUF_SIZE)) |
825ddf13 | 844 | ilog_error("rb_set_buffers failed for server"); |
212380e3 | 845 | |
c6d72037 | 846 | /* Enable compression now */ |
f4a759c5 VY |
847 | if(IsCapable(client_p, CAP_ZIP)) |
848 | { | |
849 | start_zlib_session(client_p); | |
850 | } | |
8982edb0 | 851 | sendto_one(client_p, "SVINFO %d %d 0 :%ld", TS_CURRENT, TS_MIN, (long int)rb_current_time()); |
212380e3 AC |
852 | |
853 | client_p->servptr = &me; | |
854 | ||
855 | if(IsAnyDead(client_p)) | |
856 | return CLIENT_EXITED; | |
857 | ||
858 | SetServer(client_p); | |
859 | ||
330fc5c1 | 860 | rb_dlinkAdd(client_p, &client_p->lnode, &me.serv->servers); |
330fc5c1 AC |
861 | rb_dlinkMoveNode(&client_p->localClient->tnode, &unknown_list, &serv_list); |
862 | rb_dlinkAddTailAlloc(client_p, &global_serv_list); | |
212380e3 AC |
863 | |
864 | if(has_id(client_p)) | |
865 | add_to_id_hash(client_p->id, client_p); | |
866 | ||
867 | add_to_client_hash(client_p->name, client_p); | |
868 | /* doesnt duplicate client_p->serv if allocated this struct already */ | |
869 | make_server(client_p); | |
212380e3 AC |
870 | |
871 | client_p->serv->caps = client_p->localClient->caps; | |
872 | ||
873 | if(client_p->localClient->fullcaps) | |
874 | { | |
47a03750 | 875 | client_p->serv->fullcaps = rb_strdup(client_p->localClient->fullcaps); |
637c4932 | 876 | rb_free(client_p->localClient->fullcaps); |
212380e3 AC |
877 | client_p->localClient->fullcaps = NULL; |
878 | } | |
879 | ||
994544c2 | 880 | client_p->serv->nameinfo = scache_connect(client_p->name, client_p->info, IsHidden(client_p)); |
e3354945 | 881 | client_p->localClient->firsttime = rb_current_time(); |
212380e3 AC |
882 | /* fixing eob timings.. -gnp */ |
883 | ||
330fc5c1 | 884 | if((rb_dlink_list_length(&lclient_list) + rb_dlink_list_length(&serv_list)) > |
2f15f871 | 885 | (unsigned long)MaxConnectionCount) |
55abcbb2 | 886 | MaxConnectionCount = rb_dlink_list_length(&lclient_list) + |
330fc5c1 | 887 | rb_dlink_list_length(&serv_list); |
2f15f871 | 888 | |
212380e3 AC |
889 | /* Show the real host/IP to admins */ |
890 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
891 | "Link with %s established: (%s) link", | |
b3ebc7ab | 892 | client_p->name, |
212380e3 AC |
893 | show_capabilities(client_p)); |
894 | ||
895 | ilog(L_SERVER, "Link with %s established: (%s) link", | |
896 | log_client_name(client_p, SHOW_IP), show_capabilities(client_p)); | |
897 | ||
898 | hdata.client = &me; | |
899 | hdata.target = client_p; | |
900 | call_hook(h_server_introduced, &hdata); | |
901 | ||
5203cba5 | 902 | snprintf(note, sizeof(note), "Server: %s", client_p->name); |
c6d72037 | 903 | rb_note(client_p->localClient->F, note); |
212380e3 AC |
904 | |
905 | /* | |
906 | ** Old sendto_serv_but_one() call removed because we now | |
907 | ** need to send different names to different servers | |
908 | ** (domain name matching) Send new server to other servers. | |
909 | */ | |
5cefa1d6 | 910 | RB_DLINK_FOREACH(ptr, serv_list.head) |
212380e3 AC |
911 | { |
912 | target_p = ptr->data; | |
913 | ||
914 | if(target_p == client_p) | |
915 | continue; | |
916 | ||
917 | if(has_id(target_p) && has_id(client_p)) | |
918 | { | |
919 | sendto_one(target_p, ":%s SID %s 2 %s :%s%s", | |
920 | me.id, client_p->name, client_p->id, | |
921 | IsHidden(client_p) ? "(H) " : "", client_p->info); | |
922 | ||
ce4fa447 | 923 | if(!EmptyString(client_p->serv->fullcaps)) |
212380e3 AC |
924 | sendto_one(target_p, ":%s ENCAP * GCAP :%s", |
925 | client_p->id, client_p->serv->fullcaps); | |
926 | } | |
927 | else | |
928 | { | |
929 | sendto_one(target_p, ":%s SERVER %s 2 :%s%s", | |
930 | me.name, client_p->name, | |
931 | IsHidden(client_p) ? "(H) " : "", client_p->info); | |
932 | ||
ce4fa447 | 933 | if(!EmptyString(client_p->serv->fullcaps)) |
212380e3 AC |
934 | sendto_one(target_p, ":%s ENCAP * GCAP :%s", |
935 | client_p->name, client_p->serv->fullcaps); | |
936 | } | |
937 | } | |
938 | ||
939 | /* | |
940 | ** Pass on my client information to the new server | |
941 | ** | |
942 | ** First, pass only servers (idea is that if the link gets | |
943 | ** cancelled beacause the server was already there, | |
944 | ** there are no NICK's to be cancelled...). Of course, | |
945 | ** if cancellation occurs, all this info is sent anyway, | |
946 | ** and I guess the link dies when a read is attempted...? --msa | |
55abcbb2 | 947 | ** |
212380e3 AC |
948 | ** Note: Link cancellation to occur at this point means |
949 | ** that at least two servers from my fragment are building | |
950 | ** up connection this other fragment at the same time, it's | |
951 | ** a race condition, not the normal way of operation... | |
952 | ** | |
953 | ** ALSO NOTE: using the get_client_name for server names-- | |
954 | ** see previous *WARNING*!!! (Also, original inpath | |
955 | ** is destroyed...) | |
956 | */ | |
5cefa1d6 | 957 | RB_DLINK_FOREACH(ptr, global_serv_list.head) |
212380e3 AC |
958 | { |
959 | target_p = ptr->data; | |
960 | ||
961 | /* target_p->from == target_p for target_p == client_p */ | |
962 | if(IsMe(target_p) || target_p->from == client_p) | |
963 | continue; | |
964 | ||
965 | /* presumption, if target has an id, so does its uplink */ | |
966 | if(has_id(client_p) && has_id(target_p)) | |
967 | sendto_one(client_p, ":%s SID %s %d %s :%s%s", | |
66c8fdd2 | 968 | target_p->servptr->id, target_p->name, |
212380e3 AC |
969 | target_p->hopcount + 1, target_p->id, |
970 | IsHidden(target_p) ? "(H) " : "", target_p->info); | |
971 | else | |
972 | sendto_one(client_p, ":%s SERVER %s %d :%s%s", | |
66c8fdd2 | 973 | target_p->servptr->name, |
212380e3 AC |
974 | target_p->name, target_p->hopcount + 1, |
975 | IsHidden(target_p) ? "(H) " : "", target_p->info); | |
976 | ||
ce4fa447 | 977 | if(!EmptyString(target_p->serv->fullcaps)) |
212380e3 AC |
978 | sendto_one(client_p, ":%s ENCAP * GCAP :%s", |
979 | get_id(target_p, client_p), | |
980 | target_p->serv->fullcaps); | |
981 | } | |
982 | ||
431a1a27 JT |
983 | if(IsCapable(client_p, CAP_BAN)) |
984 | burst_ban(client_p); | |
985 | ||
7bb8c655 | 986 | burst_TS6(client_p); |
212380e3 AC |
987 | |
988 | /* Always send a PING after connect burst is done */ | |
989 | sendto_one(client_p, "PING :%s", get_id(&me, client_p)); | |
990 | ||
991 | free_pre_client(client_p); | |
992 | ||
0bd120ed | 993 | send_pop_queue(client_p); |
212380e3 AC |
994 | |
995 | return 0; | |
212380e3 AC |
996 | } |
997 | ||
998 | /* | |
999 | * New server connection code | |
1000 | * Based upon the stuff floating about in s_bsd.c | |
1001 | * -- adrian | |
1002 | */ | |
1003 | ||
1004 | /* | |
1005 | * serv_connect() - initiate a server connection | |
1006 | * | |
5203cba5 | 1007 | * inputs - pointer to conf |
212380e3 AC |
1008 | * - pointer to client doing the connet |
1009 | * output - | |
1010 | * side effects - | |
1011 | * | |
1012 | * This code initiates a connection to a server. It first checks to make | |
1013 | * sure the given server exists. If this is the case, it creates a socket, | |
1014 | * creates a client, saves the socket information in the client, and | |
b2f0da88 | 1015 | * initiates a connection to the server through rb_connect_tcp(). The |
212380e3 AC |
1016 | * completion of this goes through serv_completed_connection(). |
1017 | * | |
1018 | * We return 1 if the connection is attempted, since we don't know whether | |
1019 | * it suceeded or not, and 0 if it fails in here somewhere. | |
1020 | */ | |
1021 | int | |
1022 | serv_connect(struct server_conf *server_p, struct Client *by) | |
1023 | { | |
1024 | struct Client *client_p; | |
d4214e94 SA |
1025 | struct rb_sockaddr_storage sa_connect; |
1026 | struct rb_sockaddr_storage sa_bind; | |
6c528b8e | 1027 | char note[HOSTLEN + 10]; |
1d02144f | 1028 | rb_fde_t *F; |
212380e3 AC |
1029 | |
1030 | s_assert(server_p != NULL); | |
1031 | if(server_p == NULL) | |
1032 | return 0; | |
1033 | ||
d4214e94 SA |
1034 | #ifdef RB_IPV6 |
1035 | if(server_p->aftype != AF_UNSPEC | |
1036 | && GET_SS_FAMILY(&server_p->connect4) == AF_INET | |
1037 | && GET_SS_FAMILY(&server_p->connect6) == AF_INET6) | |
1038 | { | |
1039 | if(rand() % 2 == 0) | |
1040 | { | |
1041 | sa_connect = server_p->connect4; | |
1042 | sa_bind = server_p->bind4; | |
1043 | } | |
1044 | else | |
1045 | { | |
1046 | sa_connect = server_p->connect6; | |
1047 | sa_bind = server_p->bind6; | |
1048 | } | |
1049 | } | |
1050 | else if(server_p->aftype == AF_INET || GET_SS_FAMILY(&server_p->connect4) == AF_INET) | |
1051 | #endif | |
1052 | { | |
1053 | sa_connect = server_p->connect4; | |
1054 | sa_bind = server_p->bind4; | |
1055 | } | |
1056 | #ifdef RB_IPV6 | |
1057 | else if(server_p->aftype == AF_INET6 || GET_SS_FAMILY(&server_p->connect6) == AF_INET6) | |
1058 | { | |
1059 | sa_connect = server_p->connect6; | |
1060 | sa_bind = server_p->bind6; | |
1061 | } | |
1062 | #endif | |
1063 | ||
1d02144f | 1064 | /* log */ |
d4214e94 SA |
1065 | buf[0] = 0; |
1066 | rb_inet_ntop_sock((struct sockaddr *)&sa_connect, buf, sizeof(buf)); | |
1d02144f AC |
1067 | ilog(L_SERVER, "Connect to *[%s] @%s", server_p->name, buf); |
1068 | ||
212380e3 AC |
1069 | /* |
1070 | * Make sure this server isn't already connected | |
1071 | */ | |
1072 | if((client_p = find_server(NULL, server_p->name))) | |
1073 | { | |
1074 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1075 | "Server %s already present from %s", | |
b3ebc7ab | 1076 | server_p->name, client_p->name); |
212380e3 AC |
1077 | if(by && IsPerson(by) && !MyClient(by)) |
1078 | sendto_one_notice(by, ":Server %s already present from %s", | |
b3ebc7ab | 1079 | server_p->name, client_p->name); |
212380e3 AC |
1080 | return 0; |
1081 | } | |
1082 | ||
1083 | /* create a socket for the server connection */ | |
d4214e94 SA |
1084 | if(GET_SS_FAMILY(&sa_connect) == AF_UNSPEC) |
1085 | { | |
1086 | ilog_error("unspecified socket address family"); | |
1087 | return 0; | |
1088 | } | |
1089 | else if((F = rb_socket(GET_SS_FAMILY(&sa_connect), SOCK_STREAM, 0, NULL)) == NULL) | |
212380e3 | 1090 | { |
825ddf13 | 1091 | ilog_error("opening a stream socket"); |
212380e3 AC |
1092 | return 0; |
1093 | } | |
1094 | ||
1d02144f | 1095 | /* servernames are always guaranteed under HOSTLEN chars */ |
5203cba5 | 1096 | snprintf(note, sizeof(note), "Server: %s", server_p->name); |
6c528b8e | 1097 | rb_note(F, note); |
212380e3 AC |
1098 | |
1099 | /* Create a local client */ | |
1100 | client_p = make_client(NULL); | |
1101 | ||
1d02144f | 1102 | /* Copy in the server, hostname, fd */ |
f427c8b0 | 1103 | rb_strlcpy(client_p->name, server_p->name, sizeof(client_p->name)); |
d4214e94 SA |
1104 | if(server_p->connect_host) |
1105 | rb_strlcpy(client_p->host, server_p->connect_host, sizeof(client_p->host)); | |
1106 | else | |
1107 | rb_strlcpy(client_p->host, buf, sizeof(client_p->host)); | |
1d02144f | 1108 | rb_strlcpy(client_p->sockhost, buf, sizeof(client_p->sockhost)); |
6c528b8e | 1109 | client_p->localClient->F = F; |
1d02144f | 1110 | /* shove the port number into the sockaddr */ |
d4214e94 | 1111 | SET_SS_PORT(&sa_connect, htons(server_p->port)); |
212380e3 AC |
1112 | |
1113 | /* | |
1114 | * Set up the initial server evilness, ripped straight from | |
1115 | * connect_server(), so don't blame me for it being evil. | |
1116 | * -- adrian | |
1117 | */ | |
1118 | ||
6c528b8e | 1119 | if(!rb_set_buffers(client_p->localClient->F, READBUF_SIZE)) |
212380e3 | 1120 | { |
825ddf13 | 1121 | ilog_error("setting the buffer size for a server connection"); |
212380e3 AC |
1122 | } |
1123 | ||
1124 | /* | |
1125 | * Attach config entries to client here rather than in | |
1126 | * serv_connect_callback(). This to avoid null pointer references. | |
1127 | */ | |
1128 | attach_server_conf(client_p, server_p); | |
1129 | ||
1130 | /* | |
1131 | * at this point we have a connection in progress and C/N lines | |
1132 | * attached to the client, the socket info should be saved in the | |
1133 | * client and it should either be resolved or have a valid address. | |
1134 | * | |
1135 | * The socket has been connected or connect is in progress. | |
1136 | */ | |
1137 | make_server(client_p); | |
1d02144f AC |
1138 | if(by && IsClient(by)) |
1139 | strcpy(client_p->serv->by, by->name); | |
212380e3 | 1140 | else |
1d02144f AC |
1141 | strcpy(client_p->serv->by, "AutoConn."); |
1142 | ||
212380e3 | 1143 | SetConnecting(client_p); |
330fc5c1 | 1144 | rb_dlinkAddTail(client_p, &client_p->node, &global_client_list); |
212380e3 | 1145 | |
d4214e94 | 1146 | if(GET_SS_FAMILY(&sa_bind) == AF_UNSPEC) |
212380e3 | 1147 | { |
d4214e94 SA |
1148 | if(GET_SS_FAMILY(&sa_connect) == GET_SS_FAMILY(&ServerInfo.bind4)) |
1149 | sa_bind = ServerInfo.bind4; | |
ccda6e3f | 1150 | #ifdef RB_IPV6 |
d4214e94 SA |
1151 | if(GET_SS_FAMILY(&sa_connect) == GET_SS_FAMILY(&ServerInfo.bind6)) |
1152 | sa_bind = ServerInfo.bind6; | |
17648928 | 1153 | #endif |
abe5dd20 | 1154 | } |
1d02144f | 1155 | |
d4214e94 SA |
1156 | rb_connect_tcp(client_p->localClient->F, |
1157 | (struct sockaddr *)&sa_connect, | |
1158 | GET_SS_FAMILY(&sa_bind) == AF_UNSPEC ? NULL : (struct sockaddr *)&sa_bind, | |
d4214e94 SA |
1159 | ServerConfSSL(server_p) ? serv_connect_ssl_callback : serv_connect_callback, |
1160 | client_p, ConfigFileEntry.connect_timeout); | |
1d02144f | 1161 | return 1; |
212380e3 AC |
1162 | } |
1163 | ||
f4a759c5 VY |
1164 | static void |
1165 | serv_connect_ssl_callback(rb_fde_t *F, int status, void *data) | |
1166 | { | |
1167 | struct Client *client_p = data; | |
1168 | rb_fde_t *xF[2]; | |
9ec51326 | 1169 | rb_connect_sockaddr(F, (struct sockaddr *)&client_p->localClient->ip, sizeof(client_p->localClient->ip)); |
f4a759c5 VY |
1170 | if(status != RB_OK) |
1171 | { | |
9ec51326 JT |
1172 | /* Print error message, just like non-SSL. */ |
1173 | serv_connect_callback(F, status, data); | |
f4a759c5 VY |
1174 | return; |
1175 | } | |
eda22d87 JT |
1176 | if(rb_socketpair(AF_UNIX, SOCK_STREAM, 0, &xF[0], &xF[1], "Outgoing ssld connection") == -1) |
1177 | { | |
1178 | ilog_error("rb_socketpair failed for server"); | |
1179 | serv_connect_callback(F, RB_ERROR, data); | |
1180 | return; | |
55abcbb2 | 1181 | |
eda22d87 | 1182 | } |
f4a759c5 | 1183 | client_p->localClient->F = xF[0]; |
53789fdd | 1184 | client_p->localClient->ssl_callback = serv_connect_ssl_open_callback; |
f4a759c5 | 1185 | |
de7cf7e0 | 1186 | client_p->localClient->ssl_ctl = start_ssld_connect(F, xF[1], connid_get(client_p)); |
5e270e7d SA |
1187 | if(!client_p->localClient->ssl_ctl) |
1188 | { | |
1189 | serv_connect_callback(client_p->localClient->F, RB_ERROR, data); | |
1190 | return; | |
1191 | } | |
f4a759c5 | 1192 | SetSSL(client_p); |
c6d72037 VY |
1193 | } |
1194 | ||
53789fdd SA |
1195 | static int |
1196 | serv_connect_ssl_open_callback(struct Client *client_p, int status) | |
1197 | { | |
1198 | serv_connect_callback(client_p->localClient->F, status, client_p); | |
1199 | return 1; /* suppress default exit_client handler for status != RB_OK */ | |
1200 | } | |
1201 | ||
212380e3 AC |
1202 | /* |
1203 | * serv_connect_callback() - complete a server connection. | |
55abcbb2 | 1204 | * |
212380e3 AC |
1205 | * This routine is called after the server connection attempt has |
1206 | * completed. If unsucessful, an error is sent to ops and the client | |
1207 | * is closed. If sucessful, it goes through the initialisation/check | |
1208 | * procedures, the capabilities are sent, and the socket is then | |
1209 | * marked for reading. | |
1210 | */ | |
1211 | static void | |
6c528b8e | 1212 | serv_connect_callback(rb_fde_t *F, int status, void *data) |
212380e3 AC |
1213 | { |
1214 | struct Client *client_p = data; | |
1215 | struct server_conf *server_p; | |
1216 | char *errstr; | |
1217 | ||
1218 | /* First, make sure its a real client! */ | |
1219 | s_assert(client_p != NULL); | |
6c528b8e | 1220 | s_assert(client_p->localClient->F == F); |
212380e3 AC |
1221 | |
1222 | if(client_p == NULL) | |
1223 | return; | |
1224 | ||
1225 | /* while we were waiting for the callback, its possible this already | |
1226 | * linked in.. --fl | |
1227 | */ | |
1228 | if(find_server(NULL, client_p->name) != NULL) | |
1229 | { | |
1230 | exit_client(client_p, client_p, &me, "Server Exists"); | |
1231 | return; | |
1232 | } | |
1233 | ||
f4a759c5 | 1234 | if(client_p->localClient->ssl_ctl == NULL) |
c6d72037 VY |
1235 | rb_connect_sockaddr(F, (struct sockaddr *)&client_p->localClient->ip, sizeof(client_p->localClient->ip)); |
1236 | ||
212380e3 | 1237 | /* Check the status */ |
6c528b8e | 1238 | if(status != RB_OK) |
212380e3 AC |
1239 | { |
1240 | /* COMM_ERR_TIMEOUT wont have an errno associated with it, | |
1241 | * the others will.. --fl | |
1242 | */ | |
4fbb7362 | 1243 | if(status == RB_ERR_TIMEOUT || status == RB_ERROR_SSL) |
212380e3 AC |
1244 | { |
1245 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1246 | "Error connecting to %s[%s]: %s", | |
55abcbb2 | 1247 | client_p->name, |
212380e3 | 1248 | "255.255.255.255", |
b2f0da88 | 1249 | rb_errstr(status)); |
212380e3 AC |
1250 | ilog(L_SERVER, "Error connecting to %s[%s]: %s", |
1251 | client_p->name, client_p->sockhost, | |
b2f0da88 | 1252 | rb_errstr(status)); |
212380e3 AC |
1253 | } |
1254 | else | |
1255 | { | |
6c528b8e | 1256 | errstr = strerror(rb_get_sockerr(F)); |
212380e3 AC |
1257 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, |
1258 | "Error connecting to %s[%s]: %s (%s)", | |
1259 | client_p->name, | |
212380e3 | 1260 | "255.255.255.255", |
b2f0da88 | 1261 | rb_errstr(status), errstr); |
212380e3 AC |
1262 | ilog(L_SERVER, "Error connecting to %s[%s]: %s (%s)", |
1263 | client_p->name, client_p->sockhost, | |
b2f0da88 | 1264 | rb_errstr(status), errstr); |
212380e3 AC |
1265 | } |
1266 | ||
b2f0da88 | 1267 | exit_client(client_p, client_p, &me, rb_errstr(status)); |
212380e3 AC |
1268 | return; |
1269 | } | |
1270 | ||
1271 | /* COMM_OK, so continue the connection procedure */ | |
1272 | /* Get the C/N lines */ | |
1273 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
1274 | { | |
1275 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, "Lost connect{} block for %s", | |
b3ebc7ab | 1276 | client_p->name); |
212380e3 AC |
1277 | exit_client(client_p, client_p, &me, "Lost connect{} block"); |
1278 | return; | |
1279 | } | |
1280 | ||
65f43a4f SA |
1281 | if(server_p->certfp && (!client_p->certfp || rb_strcasecmp(server_p->certfp, client_p->certfp) != 0)) |
1282 | { | |
1283 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1284 | "Connection to %s has invalid certificate fingerprint %s", | |
1285 | client_p->name, client_p->certfp); | |
1286 | ilog(L_SERVER, "Access denied, invalid certificate fingerprint %s from %s", | |
1287 | client_p->certfp, log_client_name(client_p, SHOW_IP)); | |
1288 | ||
1289 | exit_client(client_p, client_p, &me, "Invalid fingerprint."); | |
1290 | return; | |
1291 | } | |
1292 | ||
212380e3 AC |
1293 | /* Next, send the initial handshake */ |
1294 | SetHandshake(client_p); | |
1295 | ||
ff0cc1e6 | 1296 | /* the server may be linking based on certificate fingerprint now. --nenolod */ |
55abcbb2 | 1297 | sendto_one(client_p, "PASS %s TS %d :%s", |
ff0cc1e6 | 1298 | EmptyString(server_p->spasswd) ? "*" : server_p->spasswd, TS_CURRENT, me.id); |
212380e3 AC |
1299 | |
1300 | /* pass my info to the new server */ | |
1301 | send_capabilities(client_p, default_server_capabs | |
1302 | | (ServerConfCompressed(server_p) ? CAP_ZIP_SUPPORTED : 0) | |
1303 | | (ServerConfTb(server_p) ? CAP_TB : 0)); | |
1304 | ||
1305 | sendto_one(client_p, "SERVER %s 1 :%s%s", | |
1306 | me.name, | |
1307 | ConfigServerHide.hidden ? "(H) " : "", me.info); | |
1308 | ||
55abcbb2 | 1309 | /* |
212380e3 AC |
1310 | * If we've been marked dead because a send failed, just exit |
1311 | * here now and save everyone the trouble of us ever existing. | |
1312 | */ | |
1313 | if(IsAnyDead(client_p)) | |
1314 | { | |
1315 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1316 | "%s went dead during handshake", client_p->name); | |
1317 | exit_client(client_p, client_p, &me, "Went dead during handshake"); | |
1318 | return; | |
1319 | } | |
1320 | ||
1321 | /* don't move to serv_list yet -- we haven't sent a burst! */ | |
1322 | ||
1323 | /* If we get here, we're ok, so lets start reading some data */ | |
6c528b8e | 1324 | read_packet(F, client_p); |
212380e3 | 1325 | } |