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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 | int MaxConnectionCount = 1; |
57 | int MaxClientCount = 1; | |
58 | int refresh_user_links = 0; | |
59 | ||
60 | static char buf[BUFSIZE]; | |
61 | ||
212380e3 AC |
62 | /* |
63 | * list of recognized server capabilities. "TS" is not on the list | |
64 | * because all servers that we talk to already do TS, and the kludged | |
65 | * extra argument to "PASS" takes care of checking that. -orabidoo | |
66 | */ | |
346fba92 | 67 | struct CapabilityIndex *serv_capindex = NULL; |
486cd344 | 68 | struct CapabilityIndex *cli_capindex = NULL; |
346fba92 AC |
69 | |
70 | unsigned int CAP_CAP; | |
71 | unsigned int CAP_QS; | |
72 | unsigned int CAP_EX; | |
73 | unsigned int CAP_CHW; | |
74 | unsigned int CAP_IE; | |
75 | unsigned int CAP_KLN; | |
76 | unsigned int CAP_ZIP; | |
77 | unsigned int CAP_KNOCK; | |
78 | unsigned int CAP_TB; | |
79 | unsigned int CAP_UNKLN; | |
80 | unsigned int CAP_CLUSTER; | |
81 | unsigned int CAP_ENCAP; | |
82 | unsigned int CAP_TS6; | |
83 | unsigned int CAP_SERVICE; | |
84 | unsigned int CAP_RSFNC; | |
85 | unsigned int CAP_SAVE; | |
86 | unsigned int CAP_EUID; | |
87 | unsigned int CAP_EOPMOD; | |
88 | unsigned int CAP_BAN; | |
89 | unsigned int CAP_MLOCK; | |
90 | ||
32df5e96 | 91 | unsigned int CLICAP_MULTI_PREFIX; |
32df5e96 AC |
92 | unsigned int CLICAP_ACCOUNT_NOTIFY; |
93 | unsigned int CLICAP_EXTENDED_JOIN; | |
94 | unsigned int CLICAP_AWAY_NOTIFY; | |
32df5e96 AC |
95 | unsigned int CLICAP_USERHOST_IN_NAMES; |
96 | unsigned int CLICAP_CAP_NOTIFY; | |
97 | unsigned int CLICAP_CHGHOST; | |
be2ce24c | 98 | unsigned int CLICAP_ECHO_MESSAGE; |
32df5e96 | 99 | |
346fba92 AC |
100 | /* |
101 | * initialize our builtin capability table. --nenolod | |
102 | */ | |
103 | void | |
104 | init_builtin_capabs(void) | |
105 | { | |
885cd603 | 106 | serv_capindex = capability_index_create("server capabilities"); |
346fba92 | 107 | |
22cae20f JT |
108 | /* These two are not set via CAPAB/GCAP keywords. */ |
109 | CAP_CAP = capability_put_anonymous(serv_capindex); | |
110 | CAP_TS6 = capability_put_anonymous(serv_capindex); | |
111 | ||
486cd344 AC |
112 | CAP_QS = capability_put(serv_capindex, "QS", NULL); |
113 | CAP_EX = capability_put(serv_capindex, "EX", NULL); | |
114 | CAP_CHW = capability_put(serv_capindex, "CHW", NULL); | |
115 | CAP_IE = capability_put(serv_capindex, "IE", NULL); | |
116 | CAP_KLN = capability_put(serv_capindex, "KLN", NULL); | |
117 | CAP_KNOCK = capability_put(serv_capindex, "KNOCK", NULL); | |
118 | CAP_ZIP = capability_put(serv_capindex, "ZIP", NULL); | |
119 | CAP_TB = capability_put(serv_capindex, "TB", NULL); | |
120 | CAP_UNKLN = capability_put(serv_capindex, "UNKLN", NULL); | |
121 | CAP_CLUSTER = capability_put(serv_capindex, "CLUSTER", NULL); | |
122 | CAP_ENCAP = capability_put(serv_capindex, "ENCAP", NULL); | |
123 | CAP_SERVICE = capability_put(serv_capindex, "SERVICES", NULL); | |
124 | CAP_RSFNC = capability_put(serv_capindex, "RSFNC", NULL); | |
125 | CAP_SAVE = capability_put(serv_capindex, "SAVE", NULL); | |
126 | CAP_EUID = capability_put(serv_capindex, "EUID", NULL); | |
127 | CAP_EOPMOD = capability_put(serv_capindex, "EOPMOD", NULL); | |
128 | CAP_BAN = capability_put(serv_capindex, "BAN", NULL); | |
129 | CAP_MLOCK = capability_put(serv_capindex, "MLOCK", NULL); | |
58b60c20 JT |
130 | |
131 | capability_require(serv_capindex, "QS"); | |
d0c2fc82 JT |
132 | capability_require(serv_capindex, "EX"); |
133 | capability_require(serv_capindex, "IE"); | |
58b60c20 | 134 | capability_require(serv_capindex, "ENCAP"); |
486cd344 AC |
135 | |
136 | cli_capindex = capability_index_create("client capabilities"); | |
32df5e96 AC |
137 | |
138 | CLICAP_MULTI_PREFIX = capability_put(cli_capindex, "multi-prefix", NULL); | |
32df5e96 AC |
139 | CLICAP_ACCOUNT_NOTIFY = capability_put(cli_capindex, "account-notify", NULL); |
140 | CLICAP_EXTENDED_JOIN = capability_put(cli_capindex, "extended-join", NULL); | |
141 | CLICAP_AWAY_NOTIFY = capability_put(cli_capindex, "away-notify", NULL); | |
32df5e96 AC |
142 | CLICAP_USERHOST_IN_NAMES = capability_put(cli_capindex, "userhost-in-names", NULL); |
143 | CLICAP_CAP_NOTIFY = capability_put(cli_capindex, "cap-notify", NULL); | |
144 | CLICAP_CHGHOST = capability_put(cli_capindex, "chghost", NULL); | |
be2ce24c | 145 | CLICAP_ECHO_MESSAGE = capability_put(cli_capindex, "echo-message", NULL); |
346fba92 | 146 | } |
212380e3 | 147 | |
212380e3 | 148 | static CNCB serv_connect_callback; |
c6d72037 | 149 | static CNCB serv_connect_ssl_callback; |
53789fdd | 150 | static SSL_OPEN_CB serv_connect_ssl_open_callback; |
212380e3 AC |
151 | |
152 | /* | |
153 | * hunt_server - Do the basic thing in delivering the message (command) | |
154 | * across the relays to the specific server (server) for | |
155 | * actions. | |
156 | * | |
157 | * Note: The command is a format string and *MUST* be | |
158 | * of prefixed style (e.g. ":%s COMMAND %s ..."). | |
159 | * Command can have only max 8 parameters. | |
160 | * | |
161 | * server parv[server] is the parameter identifying the | |
162 | * target server. | |
163 | * | |
164 | * *WARNING* | |
165 | * parv[server] is replaced with the pointer to the | |
166 | * real servername from the matched client (I'm lazy | |
167 | * now --msa). | |
168 | * | |
169 | * returns: (see #defines) | |
170 | */ | |
171 | int | |
172 | hunt_server(struct Client *client_p, struct Client *source_p, | |
173 | const char *command, int server, int parc, const char *parv[]) | |
174 | { | |
175 | struct Client *target_p; | |
176 | int wilds; | |
330fc5c1 | 177 | rb_dlink_node *ptr; |
212380e3 AC |
178 | const char *old; |
179 | char *new; | |
180 | ||
181 | /* | |
182 | * Assume it's me, if no server | |
183 | */ | |
184 | if(parc <= server || EmptyString(parv[server]) || | |
4d7a1ee5 | 185 | match(parv[server], me.name) || (strcmp(parv[server], me.id) == 0)) |
212380e3 | 186 | return (HUNTED_ISME); |
346fba92 | 187 | |
212380e3 AC |
188 | new = LOCAL_COPY(parv[server]); |
189 | ||
190 | /* | |
191 | * These are to pickup matches that would cause the following | |
192 | * message to go in the wrong direction while doing quick fast | |
193 | * non-matching lookups. | |
194 | */ | |
195 | if(MyClient(source_p)) | |
196 | target_p = find_named_client(new); | |
197 | else | |
198 | target_p = find_client(new); | |
199 | ||
200 | if(target_p) | |
201 | if(target_p->from == source_p->from && !MyConnect(target_p)) | |
202 | target_p = NULL; | |
203 | ||
212380e3 AC |
204 | collapse(new); |
205 | wilds = (strchr(new, '?') || strchr(new, '*')); | |
206 | ||
207 | /* | |
208 | * Again, if there are no wild cards involved in the server | |
209 | * name, use the hash lookup | |
210 | */ | |
cd300c1b | 211 | if(!target_p && wilds) |
212380e3 | 212 | { |
2fb07961 | 213 | RB_DLINK_FOREACH(ptr, global_serv_list.head) |
212380e3 | 214 | { |
cd300c1b | 215 | if(match(new, ((struct Client *) (ptr->data))->name)) |
212380e3 | 216 | { |
cd300c1b JT |
217 | target_p = ptr->data; |
218 | break; | |
212380e3 AC |
219 | } |
220 | } | |
221 | } | |
222 | ||
cd300c1b JT |
223 | if(target_p && !IsRegistered(target_p)) |
224 | target_p = NULL; | |
225 | ||
212380e3 AC |
226 | if(target_p) |
227 | { | |
212380e3 AC |
228 | if(IsMe(target_p) || MyClient(target_p)) |
229 | return HUNTED_ISME; | |
230 | ||
231 | old = parv[server]; | |
232 | parv[server] = get_id(target_p, target_p); | |
233 | ||
234 | sendto_one(target_p, command, get_id(source_p, target_p), | |
235 | parv[1], parv[2], parv[3], parv[4], parv[5], parv[6], parv[7], parv[8]); | |
236 | parv[server] = old; | |
237 | return (HUNTED_PASS); | |
238 | } | |
239 | ||
95d36ef5 | 240 | if(MyClient(source_p) || !IsDigit(parv[server][0])) |
212380e3 AC |
241 | sendto_one_numeric(source_p, ERR_NOSUCHSERVER, |
242 | form_str(ERR_NOSUCHSERVER), parv[server]); | |
243 | return (HUNTED_NOSUCH); | |
244 | } | |
245 | ||
246 | /* | |
247 | * try_connections - scan through configuration and try new connections. | |
248 | * Returns the calendar time when the next call to this | |
249 | * function should be made latest. (No harm done if this | |
250 | * is called earlier or later...) | |
251 | */ | |
252 | void | |
253 | try_connections(void *unused) | |
254 | { | |
255 | struct Client *client_p; | |
256 | struct server_conf *server_p = NULL; | |
257 | struct server_conf *tmp_p; | |
258 | struct Class *cltmp; | |
330fc5c1 | 259 | rb_dlink_node *ptr; |
07554369 | 260 | bool connecting = false; |
212380e3 AC |
261 | int confrq = 0; |
262 | time_t next = 0; | |
263 | ||
5cefa1d6 | 264 | RB_DLINK_FOREACH(ptr, server_conf_list.head) |
212380e3 AC |
265 | { |
266 | tmp_p = ptr->data; | |
267 | ||
268 | if(ServerConfIllegal(tmp_p) || !ServerConfAutoconn(tmp_p)) | |
269 | continue; | |
270 | ||
f4a759c5 | 271 | /* don't allow ssl connections if ssl isn't setup */ |
bfc44622 | 272 | if(ServerConfSSL(tmp_p) && (!ircd_ssl_ok || !get_ssld_count())) |
c6d72037 VY |
273 | continue; |
274 | ||
212380e3 AC |
275 | cltmp = tmp_p->class; |
276 | ||
277 | /* | |
278 | * Skip this entry if the use of it is still on hold until | |
279 | * future. Otherwise handle this entry (and set it on hold | |
280 | * until next time). Will reset only hold times, if already | |
281 | * made one successfull connection... [this algorithm is | |
282 | * a bit fuzzy... -- msa >;) ] | |
283 | */ | |
e3354945 | 284 | if(tmp_p->hold > rb_current_time()) |
212380e3 AC |
285 | { |
286 | if(next > tmp_p->hold || next == 0) | |
287 | next = tmp_p->hold; | |
288 | continue; | |
289 | } | |
290 | ||
291 | confrq = get_con_freq(cltmp); | |
e3354945 | 292 | tmp_p->hold = rb_current_time() + confrq; |
212380e3 AC |
293 | |
294 | /* | |
295 | * Found a CONNECT config with port specified, scan clients | |
296 | * and see if this server is already connected? | |
297 | */ | |
298 | client_p = find_server(NULL, tmp_p->name); | |
299 | ||
300 | if(!client_p && (CurrUsers(cltmp) < MaxUsers(cltmp)) && !connecting) | |
301 | { | |
302 | server_p = tmp_p; | |
303 | ||
304 | /* We connect only one at time... */ | |
07554369 | 305 | connecting = true; |
212380e3 AC |
306 | } |
307 | ||
308 | if((next > tmp_p->hold) || (next == 0)) | |
309 | next = tmp_p->hold; | |
310 | } | |
311 | ||
312 | /* TODO: change this to set active flag to 0 when added to event! --Habeeb */ | |
313 | if(GlobalSetOptions.autoconn == 0) | |
314 | return; | |
315 | ||
316 | if(!connecting) | |
317 | return; | |
318 | ||
319 | /* move this connect entry to end.. */ | |
330fc5c1 AC |
320 | rb_dlinkDelete(&server_p->node, &server_conf_list); |
321 | rb_dlinkAddTail(server_p, &server_p->node, &server_conf_list); | |
212380e3 AC |
322 | |
323 | /* | |
324 | * We used to only print this if serv_connect() actually | |
b2f0da88 | 325 | * suceeded, but since rb_tcp_connect() can call the callback |
212380e3 AC |
326 | * immediately if there is an error, we were getting error messages |
327 | * in the wrong order. SO, we just print out the activated line, | |
328 | * and let serv_connect() / serv_connect_callback() print an | |
329 | * error afterwards if it fails. | |
330 | * -- adrian | |
331 | */ | |
212380e3 AC |
332 | sendto_realops_snomask(SNO_GENERAL, L_ALL, |
333 | "Connection to %s activated", | |
334 | server_p->name); | |
212380e3 AC |
335 | |
336 | serv_connect(server_p, 0); | |
337 | } | |
338 | ||
339 | int | |
340 | check_server(const char *name, struct Client *client_p) | |
341 | { | |
342 | struct server_conf *server_p = NULL; | |
343 | struct server_conf *tmp_p; | |
330fc5c1 | 344 | rb_dlink_node *ptr; |
212380e3 | 345 | int error = -1; |
e69375f3 | 346 | const char *encr; |
84e3e445 SA |
347 | bool name_matched = false; |
348 | bool host_matched = false; | |
349 | bool certfp_failed = false; | |
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 | 362 | { |
d4214e94 SA |
363 | struct rb_sockaddr_storage client_addr; |
364 | ||
212380e3 AC |
365 | tmp_p = ptr->data; |
366 | ||
367 | if(ServerConfIllegal(tmp_p)) | |
368 | continue; | |
369 | ||
370 | if(!match(tmp_p->name, name)) | |
371 | continue; | |
372 | ||
84e3e445 | 373 | name_matched = true; |
212380e3 | 374 | |
d4214e94 SA |
375 | if(rb_inet_pton_sock(client_p->sockhost, (struct sockaddr *)&client_addr) <= 0) |
376 | SET_SS_FAMILY(&client_addr, AF_UNSPEC); | |
377 | ||
378 | if((tmp_p->connect_host && match(tmp_p->connect_host, client_p->host)) | |
379 | || (GET_SS_FAMILY(&client_addr) == GET_SS_FAMILY(&tmp_p->connect4) | |
380 | && comp_with_mask_sock((struct sockaddr *)&client_addr, | |
381 | (struct sockaddr *)&tmp_p->connect4, 32)) | |
382 | #ifdef RB_IPV6 | |
383 | || (GET_SS_FAMILY(&client_addr) == GET_SS_FAMILY(&tmp_p->connect6) | |
384 | && comp_with_mask_sock((struct sockaddr *)&client_addr, | |
385 | (struct sockaddr *)&tmp_p->connect6, 128)) | |
386 | #endif | |
387 | ) | |
212380e3 | 388 | { |
84e3e445 | 389 | host_matched = true; |
212380e3 | 390 | |
ff0cc1e6 | 391 | if(tmp_p->passwd) |
212380e3 | 392 | { |
ff0cc1e6 | 393 | if(ServerConfEncrypted(tmp_p)) |
212380e3 | 394 | { |
e69375f3 JT |
395 | encr = rb_crypt(client_p->localClient->passwd, |
396 | tmp_p->passwd); | |
397 | if(encr != NULL && !strcmp(tmp_p->passwd, encr)) | |
ff0cc1e6 AC |
398 | { |
399 | server_p = tmp_p; | |
400 | break; | |
401 | } | |
402 | else | |
403 | continue; | |
212380e3 | 404 | } |
ff0cc1e6 AC |
405 | else if(strcmp(tmp_p->passwd, client_p->localClient->passwd)) |
406 | continue; | |
212380e3 | 407 | } |
ff0cc1e6 AC |
408 | |
409 | if(tmp_p->certfp) | |
212380e3 | 410 | { |
84e3e445 SA |
411 | if(!client_p->certfp || rb_strcasecmp(tmp_p->certfp, client_p->certfp) != 0) { |
412 | certfp_failed = true; | |
ff0cc1e6 | 413 | continue; |
84e3e445 | 414 | } |
212380e3 | 415 | } |
ff0cc1e6 AC |
416 | |
417 | server_p = tmp_p; | |
418 | break; | |
212380e3 AC |
419 | } |
420 | } | |
421 | ||
422 | if(server_p == NULL) | |
84e3e445 SA |
423 | { |
424 | /* return the most specific error */ | |
425 | if(certfp_failed) | |
426 | error = -6; | |
427 | else if(host_matched) | |
428 | error = -2; | |
429 | else if(name_matched) | |
430 | error = -3; | |
431 | ||
212380e3 | 432 | return error; |
84e3e445 | 433 | } |
212380e3 | 434 | |
f4a759c5 VY |
435 | if(ServerConfSSL(server_p) && client_p->localClient->ssl_ctl == NULL) |
436 | { | |
437 | return -5; | |
c6d72037 VY |
438 | } |
439 | ||
d2b3a2a4 SA |
440 | if (client_p->localClient->att_sconf && client_p->localClient->att_sconf->class == server_p->class) { |
441 | /* this is an outgoing connection that is already attached to the correct class */ | |
442 | } else if (CurrUsers(server_p->class) >= MaxUsers(server_p->class)) { | |
443 | return -7; | |
444 | } | |
212380e3 AC |
445 | attach_server_conf(client_p, server_p); |
446 | ||
447 | /* clear ZIP/TB if they support but we dont want them */ | |
448 | #ifdef HAVE_LIBZ | |
449 | if(!ServerConfCompressed(server_p)) | |
450 | #endif | |
451 | ClearCap(client_p, CAP_ZIP); | |
452 | ||
453 | if(!ServerConfTb(server_p)) | |
454 | ClearCap(client_p, CAP_TB); | |
455 | ||
456 | return 0; | |
457 | } | |
458 | ||
459 | /* | |
460 | * send_capabilities | |
461 | * | |
462 | * inputs - Client pointer to send to | |
463 | * - int flag of capabilities that this server has | |
464 | * output - NONE | |
465 | * side effects - send the CAPAB line to a server -orabidoo | |
212380e3 AC |
466 | */ |
467 | void | |
346fba92 | 468 | send_capabilities(struct Client *client_p, unsigned int cap_can_send) |
212380e3 | 469 | { |
346fba92 | 470 | sendto_one(client_p, "CAPAB :%s", capability_index_list(serv_capindex, cap_can_send)); |
212380e3 AC |
471 | } |
472 | ||
431a1a27 JT |
473 | static void |
474 | burst_ban(struct Client *client_p) | |
475 | { | |
476 | rb_dlink_node *ptr; | |
477 | struct ConfItem *aconf; | |
478 | const char *type, *oper; | |
479 | /* +5 for !,@,{,} and null */ | |
480 | char operbuf[NICKLEN + USERLEN + HOSTLEN + HOSTLEN + 5]; | |
481 | char *p; | |
482 | size_t melen; | |
483 | ||
484 | melen = strlen(me.name); | |
485 | RB_DLINK_FOREACH(ptr, prop_bans.head) | |
486 | { | |
487 | aconf = ptr->data; | |
488 | ||
489 | /* Skip expired stuff. */ | |
490 | if(aconf->lifetime < rb_current_time()) | |
491 | continue; | |
492 | switch(aconf->status & ~CONF_ILLEGAL) | |
493 | { | |
494 | case CONF_KILL: type = "K"; break; | |
495 | case CONF_DLINE: type = "D"; break; | |
496 | case CONF_XLINE: type = "X"; break; | |
497 | case CONF_RESV_NICK: type = "R"; break; | |
498 | case CONF_RESV_CHANNEL: type = "R"; break; | |
499 | default: | |
500 | continue; | |
501 | } | |
502 | oper = aconf->info.oper; | |
503 | if(aconf->flags & CONF_FLAGS_MYOPER) | |
504 | { | |
505 | /* Our operator{} names may not be meaningful | |
506 | * to other servers, so rewrite to our server | |
507 | * name. | |
508 | */ | |
509 | rb_strlcpy(operbuf, aconf->info.oper, sizeof buf); | |
510 | p = strrchr(operbuf, '{'); | |
ee6da53d JT |
511 | if (p != NULL && |
512 | operbuf + sizeof operbuf - p > (ptrdiff_t)(melen + 2)) | |
431a1a27 JT |
513 | { |
514 | memcpy(p + 1, me.name, melen); | |
515 | p[melen + 1] = '}'; | |
516 | p[melen + 2] = '\0'; | |
517 | oper = operbuf; | |
518 | } | |
519 | } | |
cedb7d05 | 520 | sendto_one(client_p, ":%s BAN %s %s %s %lu %d %d %s :%s%s%s", |
431a1a27 | 521 | me.id, |
431a1a27 JT |
522 | type, |
523 | aconf->user ? aconf->user : "*", aconf->host, | |
524 | (unsigned long)aconf->created, | |
525 | (int)(aconf->hold - aconf->created), | |
526 | (int)(aconf->lifetime - aconf->created), | |
527 | oper, | |
528 | aconf->passwd, | |
529 | aconf->spasswd ? "|" : "", | |
530 | aconf->spasswd ? aconf->spasswd : ""); | |
531 | } | |
532 | } | |
533 | ||
212380e3 AC |
534 | /* burst_modes_TS6() |
535 | * | |
536 | * input - client to burst to, channel name, list to burst, mode flag | |
537 | * output - | |
538 | * side effects - client is sent a list of +b, +e, or +I modes | |
539 | */ | |
540 | static void | |
55abcbb2 | 541 | burst_modes_TS6(struct Client *client_p, struct Channel *chptr, |
330fc5c1 | 542 | rb_dlink_list *list, char flag) |
212380e3 | 543 | { |
330fc5c1 | 544 | rb_dlink_node *ptr; |
212380e3 AC |
545 | struct Ban *banptr; |
546 | char *t; | |
547 | int tlen; | |
548 | int mlen; | |
549 | int cur_len; | |
550 | ||
5203cba5 | 551 | cur_len = mlen = sprintf(buf, ":%s BMASK %ld %s %c :", |
212380e3 AC |
552 | me.id, (long) chptr->channelts, chptr->chname, flag); |
553 | t = buf + mlen; | |
554 | ||
5cefa1d6 | 555 | RB_DLINK_FOREACH(ptr, list->head) |
212380e3 AC |
556 | { |
557 | banptr = ptr->data; | |
558 | ||
7f0fc87d | 559 | tlen = strlen(banptr->banstr) + (banptr->forward ? strlen(banptr->forward) + 1 : 0) + 1; |
212380e3 AC |
560 | |
561 | /* uh oh */ | |
562 | if(cur_len + tlen > BUFSIZE - 3) | |
563 | { | |
564 | /* the one we're trying to send doesnt fit at all! */ | |
565 | if(cur_len == mlen) | |
566 | { | |
567 | s_assert(0); | |
568 | continue; | |
569 | } | |
570 | ||
571 | /* chop off trailing space and send.. */ | |
572 | *(t-1) = '\0'; | |
573 | sendto_one(client_p, "%s", buf); | |
574 | cur_len = mlen; | |
575 | t = buf + mlen; | |
576 | } | |
577 | ||
7f0fc87d | 578 | if (banptr->forward) |
5203cba5 | 579 | sprintf(t, "%s$%s ", banptr->banstr, banptr->forward); |
7f0fc87d | 580 | else |
5203cba5 | 581 | sprintf(t, "%s ", banptr->banstr); |
212380e3 AC |
582 | t += tlen; |
583 | cur_len += tlen; | |
584 | } | |
585 | ||
586 | /* cant ever exit the loop above without having modified buf, | |
587 | * chop off trailing space and send. | |
588 | */ | |
589 | *(t-1) = '\0'; | |
590 | sendto_one(client_p, "%s", buf); | |
591 | } | |
592 | ||
212380e3 AC |
593 | /* |
594 | * burst_TS6 | |
55abcbb2 | 595 | * |
212380e3 AC |
596 | * inputs - client (server) to send nick towards |
597 | * - client to send nick for | |
598 | * output - NONE | |
599 | * side effects - NICK message is sent towards given client_p | |
600 | */ | |
601 | static void | |
602 | burst_TS6(struct Client *client_p) | |
603 | { | |
9744d53e | 604 | char ubuf[BUFSIZE]; |
212380e3 AC |
605 | struct Client *target_p; |
606 | struct Channel *chptr; | |
607 | struct membership *msptr; | |
608 | hook_data_client hclientinfo; | |
609 | hook_data_channel hchaninfo; | |
330fc5c1 AC |
610 | rb_dlink_node *ptr; |
611 | rb_dlink_node *uptr; | |
212380e3 AC |
612 | char *t; |
613 | int tlen, mlen; | |
614 | int cur_len = 0; | |
615 | ||
616 | hclientinfo.client = hchaninfo.client = client_p; | |
617 | ||
5cefa1d6 | 618 | RB_DLINK_FOREACH(ptr, global_client_list.head) |
212380e3 AC |
619 | { |
620 | target_p = ptr->data; | |
621 | ||
622 | if(!IsPerson(target_p)) | |
623 | continue; | |
624 | ||
087555a0 AC |
625 | if(MyClient(target_p->from) && target_p->localClient->att_sconf != NULL && ServerConfNoExport(target_p->localClient->att_sconf)) |
626 | continue; | |
627 | ||
29c92cf9 | 628 | send_umode(NULL, target_p, 0, ubuf); |
212380e3 AC |
629 | if(!*ubuf) |
630 | { | |
631 | ubuf[0] = '+'; | |
632 | ubuf[1] = '\0'; | |
633 | } | |
634 | ||
bea2295f | 635 | if(IsCapable(client_p, CAP_EUID)) |
212380e3 AC |
636 | sendto_one(client_p, ":%s EUID %s %d %ld %s %s %s %s %s %s %s :%s", |
637 | target_p->servptr->id, target_p->name, | |
55abcbb2 | 638 | target_p->hopcount + 1, |
212380e3 AC |
639 | (long) target_p->tsinfo, ubuf, |
640 | target_p->username, target_p->host, | |
641 | IsIPSpoof(target_p) ? "0" : target_p->sockhost, | |
642 | target_p->id, | |
643 | IsDynSpoof(target_p) ? target_p->orighost : "*", | |
644 | EmptyString(target_p->user->suser) ? "*" : target_p->user->suser, | |
645 | target_p->info); | |
bea2295f | 646 | else |
212380e3 AC |
647 | sendto_one(client_p, ":%s UID %s %d %ld %s %s %s %s %s :%s", |
648 | target_p->servptr->id, target_p->name, | |
55abcbb2 | 649 | target_p->hopcount + 1, |
212380e3 AC |
650 | (long) target_p->tsinfo, ubuf, |
651 | target_p->username, target_p->host, | |
652 | IsIPSpoof(target_p) ? "0" : target_p->sockhost, | |
653 | target_p->id, target_p->info); | |
bea2295f | 654 | |
8eda114a JT |
655 | if(!EmptyString(target_p->certfp)) |
656 | sendto_one(client_p, ":%s ENCAP * CERTFP :%s", | |
657 | use_id(target_p), target_p->certfp); | |
658 | ||
bea2295f | 659 | if(!IsCapable(client_p, CAP_EUID)) |
212380e3 AC |
660 | { |
661 | if(IsDynSpoof(target_p)) | |
662 | sendto_one(client_p, ":%s ENCAP * REALHOST %s", | |
663 | use_id(target_p), target_p->orighost); | |
664 | if(!EmptyString(target_p->user->suser)) | |
665 | sendto_one(client_p, ":%s ENCAP * LOGIN %s", | |
666 | use_id(target_p), target_p->user->suser); | |
667 | } | |
668 | ||
c127b45b | 669 | if(ConfigFileEntry.burst_away && !EmptyString(target_p->user->away)) |
212380e3 AC |
670 | sendto_one(client_p, ":%s AWAY :%s", |
671 | use_id(target_p), | |
c127b45b | 672 | target_p->user->away); |
212380e3 AC |
673 | |
674 | hclientinfo.target = target_p; | |
675 | call_hook(h_burst_client, &hclientinfo); | |
676 | } | |
677 | ||
5cefa1d6 | 678 | RB_DLINK_FOREACH(ptr, global_channel_list.head) |
212380e3 AC |
679 | { |
680 | chptr = ptr->data; | |
681 | ||
682 | if(*chptr->chname != '#') | |
683 | continue; | |
684 | ||
5203cba5 | 685 | cur_len = mlen = sprintf(buf, ":%s SJOIN %ld %s %s :", me.id, |
212380e3 AC |
686 | (long) chptr->channelts, chptr->chname, |
687 | channel_modes(chptr, client_p)); | |
688 | ||
689 | t = buf + mlen; | |
690 | ||
5cefa1d6 | 691 | RB_DLINK_FOREACH(uptr, chptr->members.head) |
212380e3 AC |
692 | { |
693 | msptr = uptr->data; | |
694 | ||
695 | tlen = strlen(use_id(msptr->client_p)) + 1; | |
696 | if(is_chanop(msptr)) | |
697 | tlen++; | |
698 | if(is_voiced(msptr)) | |
699 | tlen++; | |
700 | ||
701 | if(cur_len + tlen >= BUFSIZE - 3) | |
702 | { | |
703 | *(t-1) = '\0'; | |
704 | sendto_one(client_p, "%s", buf); | |
705 | cur_len = mlen; | |
706 | t = buf + mlen; | |
707 | } | |
708 | ||
5203cba5 | 709 | sprintf(t, "%s%s ", find_channel_status(msptr, 1), |
212380e3 AC |
710 | use_id(msptr->client_p)); |
711 | ||
712 | cur_len += tlen; | |
713 | t += tlen; | |
714 | } | |
715 | ||
330fc5c1 | 716 | if (rb_dlink_list_length(&chptr->members) > 0) |
212380e3 AC |
717 | { |
718 | /* remove trailing space */ | |
719 | *(t-1) = '\0'; | |
720 | } | |
721 | sendto_one(client_p, "%s", buf); | |
722 | ||
330fc5c1 | 723 | if(rb_dlink_list_length(&chptr->banlist) > 0) |
212380e3 AC |
724 | burst_modes_TS6(client_p, chptr, &chptr->banlist, 'b'); |
725 | ||
726 | if(IsCapable(client_p, CAP_EX) && | |
330fc5c1 | 727 | rb_dlink_list_length(&chptr->exceptlist) > 0) |
212380e3 AC |
728 | burst_modes_TS6(client_p, chptr, &chptr->exceptlist, 'e'); |
729 | ||
730 | if(IsCapable(client_p, CAP_IE) && | |
330fc5c1 | 731 | rb_dlink_list_length(&chptr->invexlist) > 0) |
212380e3 AC |
732 | burst_modes_TS6(client_p, chptr, &chptr->invexlist, 'I'); |
733 | ||
330fc5c1 | 734 | if(rb_dlink_list_length(&chptr->quietlist) > 0) |
212380e3 AC |
735 | burst_modes_TS6(client_p, chptr, &chptr->quietlist, 'q'); |
736 | ||
737 | if(IsCapable(client_p, CAP_TB) && chptr->topic != NULL) | |
738 | sendto_one(client_p, ":%s TB %s %ld %s%s:%s", | |
739 | me.id, chptr->chname, (long) chptr->topic_time, | |
740 | ConfigChannel.burst_topicwho ? chptr->topic_info : "", | |
741 | ConfigChannel.burst_topicwho ? " " : "", | |
742 | chptr->topic); | |
743 | ||
084ecbe0 | 744 | if(IsCapable(client_p, CAP_MLOCK)) |
6b8db2da | 745 | sendto_one(client_p, ":%s MLOCK %ld %s :%s", |
084ecbe0 | 746 | me.id, (long) chptr->channelts, chptr->chname, |
6b8db2da | 747 | EmptyString(chptr->mode_lock) ? "" : chptr->mode_lock); |
084ecbe0 | 748 | |
212380e3 AC |
749 | hchaninfo.chptr = chptr; |
750 | call_hook(h_burst_channel, &hchaninfo); | |
751 | } | |
752 | ||
753 | hclientinfo.target = NULL; | |
754 | call_hook(h_burst_finished, &hclientinfo); | |
755 | } | |
756 | ||
757 | /* | |
758 | * show_capabilities - show current server capabilities | |
759 | * | |
760 | * inputs - pointer to an struct Client | |
761 | * output - pointer to static string | |
762 | * side effects - build up string representing capabilities of server listed | |
763 | */ | |
764 | const char * | |
765 | show_capabilities(struct Client *target_p) | |
766 | { | |
767 | static char msgbuf[BUFSIZE]; | |
346fba92 AC |
768 | |
769 | *msgbuf = '\0'; | |
212380e3 | 770 | |
f4a759c5 VY |
771 | if(has_id(target_p)) |
772 | rb_strlcpy(msgbuf, " TS6", sizeof(msgbuf)); | |
f4a759c5 VY |
773 | |
774 | if(IsSSL(target_p)) | |
775 | rb_strlcat(msgbuf, " SSL", sizeof(msgbuf)); | |
212380e3 AC |
776 | |
777 | if(!IsServer(target_p) || !target_p->serv->caps) /* short circuit if no caps */ | |
f4a759c5 | 778 | return msgbuf + 1; |
212380e3 | 779 | |
89fd463e | 780 | rb_strlcat(msgbuf, " ", sizeof(msgbuf)); |
346fba92 | 781 | rb_strlcat(msgbuf, capability_index_list(serv_capindex, target_p->serv->caps), sizeof(msgbuf)); |
212380e3 | 782 | |
f4a759c5 | 783 | return msgbuf + 1; |
212380e3 AC |
784 | } |
785 | ||
786 | /* | |
787 | * server_estab | |
788 | * | |
789 | * inputs - pointer to a struct Client | |
790 | * output - | |
791 | * side effects - | |
792 | */ | |
793 | int | |
794 | server_estab(struct Client *client_p) | |
795 | { | |
796 | struct Client *target_p; | |
797 | struct server_conf *server_p; | |
798 | hook_data_client hdata; | |
799 | char *host; | |
330fc5c1 | 800 | rb_dlink_node *ptr; |
6c528b8e | 801 | char note[HOSTLEN + 15]; |
212380e3 AC |
802 | |
803 | s_assert(NULL != client_p); | |
804 | if(client_p == NULL) | |
805 | return -1; | |
212380e3 AC |
806 | |
807 | host = client_p->name; | |
808 | ||
809 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
810 | { | |
811 | /* This shouldn't happen, better tell the ops... -A1kmm */ | |
812 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
813 | "Warning: Lost connect{} block for server %s!", host); | |
814 | return exit_client(client_p, client_p, client_p, "Lost connect{} block!"); | |
815 | } | |
816 | ||
817 | /* We shouldn't have to check this, it should already done before | |
818 | * server_estab is called. -A1kmm | |
819 | */ | |
820 | if(client_p->localClient->passwd) | |
821 | { | |
822 | memset(client_p->localClient->passwd, 0, strlen(client_p->localClient->passwd)); | |
637c4932 | 823 | rb_free(client_p->localClient->passwd); |
212380e3 AC |
824 | client_p->localClient->passwd = NULL; |
825 | } | |
826 | ||
827 | /* Its got identd , since its a server */ | |
828 | SetGotId(client_p); | |
829 | ||
212380e3 AC |
830 | if(IsUnknown(client_p)) |
831 | { | |
ff0cc1e6 | 832 | /* the server may be linking based on certificate fingerprint now. --nenolod */ |
55abcbb2 | 833 | sendto_one(client_p, "PASS %s TS %d :%s", |
ff0cc1e6 | 834 | EmptyString(server_p->spasswd) ? "*" : server_p->spasswd, TS_CURRENT, me.id); |
212380e3 AC |
835 | |
836 | /* pass info to new server */ | |
ffedad8d | 837 | send_capabilities(client_p, default_server_capabs | CAP_MASK |
212380e3 AC |
838 | | (ServerConfCompressed(server_p) ? CAP_ZIP_SUPPORTED : 0) |
839 | | (ServerConfTb(server_p) ? CAP_TB : 0)); | |
840 | ||
841 | sendto_one(client_p, "SERVER %s 1 :%s%s", | |
842 | me.name, | |
843 | ConfigServerHide.hidden ? "(H) " : "", | |
844 | (me.info[0]) ? (me.info) : "IRCers United"); | |
845 | } | |
846 | ||
6c528b8e | 847 | if(!rb_set_buffers(client_p->localClient->F, READBUF_SIZE)) |
825ddf13 | 848 | ilog_error("rb_set_buffers failed for server"); |
212380e3 | 849 | |
c6d72037 | 850 | /* Enable compression now */ |
f4a759c5 VY |
851 | if(IsCapable(client_p, CAP_ZIP)) |
852 | { | |
853 | start_zlib_session(client_p); | |
854 | } | |
212380e3 AC |
855 | |
856 | client_p->servptr = &me; | |
857 | ||
858 | if(IsAnyDead(client_p)) | |
859 | return CLIENT_EXITED; | |
860 | ||
f41f7997 SA |
861 | sendto_one(client_p, "SVINFO %d %d 0 :%ld", TS_CURRENT, TS_MIN, (long int)rb_current_time()); |
862 | ||
330fc5c1 | 863 | rb_dlinkAdd(client_p, &client_p->lnode, &me.serv->servers); |
330fc5c1 AC |
864 | rb_dlinkMoveNode(&client_p->localClient->tnode, &unknown_list, &serv_list); |
865 | rb_dlinkAddTailAlloc(client_p, &global_serv_list); | |
212380e3 AC |
866 | |
867 | if(has_id(client_p)) | |
868 | add_to_id_hash(client_p->id, client_p); | |
869 | ||
870 | add_to_client_hash(client_p->name, client_p); | |
871 | /* doesnt duplicate client_p->serv if allocated this struct already */ | |
872 | make_server(client_p); | |
6c1e15a4 | 873 | SetServer(client_p); |
212380e3 AC |
874 | |
875 | client_p->serv->caps = client_p->localClient->caps; | |
876 | ||
877 | if(client_p->localClient->fullcaps) | |
878 | { | |
47a03750 | 879 | client_p->serv->fullcaps = rb_strdup(client_p->localClient->fullcaps); |
637c4932 | 880 | rb_free(client_p->localClient->fullcaps); |
212380e3 AC |
881 | client_p->localClient->fullcaps = NULL; |
882 | } | |
883 | ||
994544c2 | 884 | client_p->serv->nameinfo = scache_connect(client_p->name, client_p->info, IsHidden(client_p)); |
e3354945 | 885 | client_p->localClient->firsttime = rb_current_time(); |
212380e3 AC |
886 | /* fixing eob timings.. -gnp */ |
887 | ||
330fc5c1 | 888 | if((rb_dlink_list_length(&lclient_list) + rb_dlink_list_length(&serv_list)) > |
2f15f871 | 889 | (unsigned long)MaxConnectionCount) |
55abcbb2 | 890 | MaxConnectionCount = rb_dlink_list_length(&lclient_list) + |
330fc5c1 | 891 | rb_dlink_list_length(&serv_list); |
2f15f871 | 892 | |
212380e3 AC |
893 | /* Show the real host/IP to admins */ |
894 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
895 | "Link with %s established: (%s) link", | |
b3ebc7ab | 896 | client_p->name, |
212380e3 AC |
897 | show_capabilities(client_p)); |
898 | ||
899 | ilog(L_SERVER, "Link with %s established: (%s) link", | |
900 | log_client_name(client_p, SHOW_IP), show_capabilities(client_p)); | |
901 | ||
902 | hdata.client = &me; | |
903 | hdata.target = client_p; | |
904 | call_hook(h_server_introduced, &hdata); | |
905 | ||
5203cba5 | 906 | snprintf(note, sizeof(note), "Server: %s", client_p->name); |
c6d72037 | 907 | rb_note(client_p->localClient->F, note); |
212380e3 AC |
908 | |
909 | /* | |
910 | ** Old sendto_serv_but_one() call removed because we now | |
911 | ** need to send different names to different servers | |
912 | ** (domain name matching) Send new server to other servers. | |
913 | */ | |
5cefa1d6 | 914 | RB_DLINK_FOREACH(ptr, serv_list.head) |
212380e3 AC |
915 | { |
916 | target_p = ptr->data; | |
917 | ||
918 | if(target_p == client_p) | |
919 | continue; | |
920 | ||
087555a0 AC |
921 | if(target_p->localClient->att_sconf != NULL && ServerConfNoExport(target_p->localClient->att_sconf)) |
922 | continue; | |
923 | ||
212380e3 AC |
924 | if(has_id(target_p) && has_id(client_p)) |
925 | { | |
926 | sendto_one(target_p, ":%s SID %s 2 %s :%s%s", | |
927 | me.id, client_p->name, client_p->id, | |
928 | IsHidden(client_p) ? "(H) " : "", client_p->info); | |
929 | ||
ce4fa447 | 930 | if(!EmptyString(client_p->serv->fullcaps)) |
212380e3 AC |
931 | sendto_one(target_p, ":%s ENCAP * GCAP :%s", |
932 | client_p->id, client_p->serv->fullcaps); | |
933 | } | |
934 | else | |
935 | { | |
936 | sendto_one(target_p, ":%s SERVER %s 2 :%s%s", | |
937 | me.name, client_p->name, | |
938 | IsHidden(client_p) ? "(H) " : "", client_p->info); | |
939 | ||
ce4fa447 | 940 | if(!EmptyString(client_p->serv->fullcaps)) |
212380e3 AC |
941 | sendto_one(target_p, ":%s ENCAP * GCAP :%s", |
942 | client_p->name, client_p->serv->fullcaps); | |
943 | } | |
944 | } | |
945 | ||
946 | /* | |
947 | ** Pass on my client information to the new server | |
948 | ** | |
949 | ** First, pass only servers (idea is that if the link gets | |
950 | ** cancelled beacause the server was already there, | |
951 | ** there are no NICK's to be cancelled...). Of course, | |
952 | ** if cancellation occurs, all this info is sent anyway, | |
953 | ** and I guess the link dies when a read is attempted...? --msa | |
55abcbb2 | 954 | ** |
212380e3 AC |
955 | ** Note: Link cancellation to occur at this point means |
956 | ** that at least two servers from my fragment are building | |
957 | ** up connection this other fragment at the same time, it's | |
958 | ** a race condition, not the normal way of operation... | |
959 | ** | |
960 | ** ALSO NOTE: using the get_client_name for server names-- | |
961 | ** see previous *WARNING*!!! (Also, original inpath | |
962 | ** is destroyed...) | |
963 | */ | |
5cefa1d6 | 964 | RB_DLINK_FOREACH(ptr, global_serv_list.head) |
212380e3 AC |
965 | { |
966 | target_p = ptr->data; | |
967 | ||
968 | /* target_p->from == target_p for target_p == client_p */ | |
969 | if(IsMe(target_p) || target_p->from == client_p) | |
970 | continue; | |
971 | ||
087555a0 AC |
972 | /* don't distribute downstream leaves of servers that are no-export */ |
973 | if(MyClient(target_p->from) && target_p->from->localClient->att_sconf != NULL && ServerConfNoExport(target_p->from->localClient->att_sconf)) | |
974 | continue; | |
975 | ||
212380e3 AC |
976 | /* presumption, if target has an id, so does its uplink */ |
977 | if(has_id(client_p) && has_id(target_p)) | |
978 | sendto_one(client_p, ":%s SID %s %d %s :%s%s", | |
66c8fdd2 | 979 | target_p->servptr->id, target_p->name, |
212380e3 AC |
980 | target_p->hopcount + 1, target_p->id, |
981 | IsHidden(target_p) ? "(H) " : "", target_p->info); | |
982 | else | |
983 | sendto_one(client_p, ":%s SERVER %s %d :%s%s", | |
66c8fdd2 | 984 | target_p->servptr->name, |
212380e3 AC |
985 | target_p->name, target_p->hopcount + 1, |
986 | IsHidden(target_p) ? "(H) " : "", target_p->info); | |
987 | ||
ce4fa447 | 988 | if(!EmptyString(target_p->serv->fullcaps)) |
212380e3 AC |
989 | sendto_one(client_p, ":%s ENCAP * GCAP :%s", |
990 | get_id(target_p, client_p), | |
991 | target_p->serv->fullcaps); | |
992 | } | |
993 | ||
431a1a27 JT |
994 | if(IsCapable(client_p, CAP_BAN)) |
995 | burst_ban(client_p); | |
996 | ||
7bb8c655 | 997 | burst_TS6(client_p); |
212380e3 AC |
998 | |
999 | /* Always send a PING after connect burst is done */ | |
1000 | sendto_one(client_p, "PING :%s", get_id(&me, client_p)); | |
1001 | ||
1002 | free_pre_client(client_p); | |
1003 | ||
0bd120ed | 1004 | send_pop_queue(client_p); |
212380e3 AC |
1005 | |
1006 | return 0; | |
212380e3 AC |
1007 | } |
1008 | ||
1009 | /* | |
1010 | * New server connection code | |
1011 | * Based upon the stuff floating about in s_bsd.c | |
1012 | * -- adrian | |
1013 | */ | |
1014 | ||
1015 | /* | |
1016 | * serv_connect() - initiate a server connection | |
1017 | * | |
5203cba5 | 1018 | * inputs - pointer to conf |
212380e3 AC |
1019 | * - pointer to client doing the connet |
1020 | * output - | |
1021 | * side effects - | |
1022 | * | |
1023 | * This code initiates a connection to a server. It first checks to make | |
1024 | * sure the given server exists. If this is the case, it creates a socket, | |
1025 | * creates a client, saves the socket information in the client, and | |
b2f0da88 | 1026 | * initiates a connection to the server through rb_connect_tcp(). The |
212380e3 AC |
1027 | * completion of this goes through serv_completed_connection(). |
1028 | * | |
1029 | * We return 1 if the connection is attempted, since we don't know whether | |
1030 | * it suceeded or not, and 0 if it fails in here somewhere. | |
1031 | */ | |
1032 | int | |
1033 | serv_connect(struct server_conf *server_p, struct Client *by) | |
1034 | { | |
1035 | struct Client *client_p; | |
d4214e94 SA |
1036 | struct rb_sockaddr_storage sa_connect; |
1037 | struct rb_sockaddr_storage sa_bind; | |
6c528b8e | 1038 | char note[HOSTLEN + 10]; |
1d02144f | 1039 | rb_fde_t *F; |
212380e3 AC |
1040 | |
1041 | s_assert(server_p != NULL); | |
1042 | if(server_p == NULL) | |
1043 | return 0; | |
1044 | ||
86e1de17 SA |
1045 | SET_SS_FAMILY(&sa_connect, AF_UNSPEC); |
1046 | SET_SS_FAMILY(&sa_bind, AF_UNSPEC); | |
1047 | ||
d4214e94 SA |
1048 | #ifdef RB_IPV6 |
1049 | if(server_p->aftype != AF_UNSPEC | |
1050 | && GET_SS_FAMILY(&server_p->connect4) == AF_INET | |
1051 | && GET_SS_FAMILY(&server_p->connect6) == AF_INET6) | |
1052 | { | |
1053 | if(rand() % 2 == 0) | |
1054 | { | |
1055 | sa_connect = server_p->connect4; | |
1056 | sa_bind = server_p->bind4; | |
1057 | } | |
1058 | else | |
1059 | { | |
1060 | sa_connect = server_p->connect6; | |
1061 | sa_bind = server_p->bind6; | |
1062 | } | |
1063 | } | |
1064 | else if(server_p->aftype == AF_INET || GET_SS_FAMILY(&server_p->connect4) == AF_INET) | |
1065 | #endif | |
1066 | { | |
1067 | sa_connect = server_p->connect4; | |
1068 | sa_bind = server_p->bind4; | |
1069 | } | |
1070 | #ifdef RB_IPV6 | |
1071 | else if(server_p->aftype == AF_INET6 || GET_SS_FAMILY(&server_p->connect6) == AF_INET6) | |
1072 | { | |
1073 | sa_connect = server_p->connect6; | |
1074 | sa_bind = server_p->bind6; | |
1075 | } | |
1076 | #endif | |
1077 | ||
1d02144f | 1078 | /* log */ |
d4214e94 SA |
1079 | buf[0] = 0; |
1080 | rb_inet_ntop_sock((struct sockaddr *)&sa_connect, buf, sizeof(buf)); | |
1d02144f AC |
1081 | ilog(L_SERVER, "Connect to *[%s] @%s", server_p->name, buf); |
1082 | ||
212380e3 AC |
1083 | /* |
1084 | * Make sure this server isn't already connected | |
1085 | */ | |
1086 | if((client_p = find_server(NULL, server_p->name))) | |
1087 | { | |
1088 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1089 | "Server %s already present from %s", | |
b3ebc7ab | 1090 | server_p->name, client_p->name); |
212380e3 AC |
1091 | if(by && IsPerson(by) && !MyClient(by)) |
1092 | sendto_one_notice(by, ":Server %s already present from %s", | |
b3ebc7ab | 1093 | server_p->name, client_p->name); |
212380e3 AC |
1094 | return 0; |
1095 | } | |
1096 | ||
e3cea4d8 SA |
1097 | if (CurrUsers(server_p->class) >= MaxUsers(server_p->class)) { |
1098 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1099 | "No more connections allowed in class \"%s\" for server %s", | |
1100 | server_p->class->class_name, server_p->name); | |
1101 | if(by && IsPerson(by) && !MyClient(by)) | |
1102 | sendto_one_notice(by, ":No more connections allowed in class \"%s\" for server %s", | |
1103 | server_p->class->class_name, server_p->name); | |
1104 | return 0; | |
1105 | } | |
1106 | ||
212380e3 | 1107 | /* create a socket for the server connection */ |
d4214e94 SA |
1108 | if(GET_SS_FAMILY(&sa_connect) == AF_UNSPEC) |
1109 | { | |
1110 | ilog_error("unspecified socket address family"); | |
1111 | return 0; | |
1112 | } | |
1113 | else if((F = rb_socket(GET_SS_FAMILY(&sa_connect), SOCK_STREAM, 0, NULL)) == NULL) | |
212380e3 | 1114 | { |
825ddf13 | 1115 | ilog_error("opening a stream socket"); |
212380e3 AC |
1116 | return 0; |
1117 | } | |
1118 | ||
1d02144f | 1119 | /* servernames are always guaranteed under HOSTLEN chars */ |
5203cba5 | 1120 | snprintf(note, sizeof(note), "Server: %s", server_p->name); |
6c528b8e | 1121 | rb_note(F, note); |
212380e3 AC |
1122 | |
1123 | /* Create a local client */ | |
1124 | client_p = make_client(NULL); | |
1125 | ||
1d02144f | 1126 | /* Copy in the server, hostname, fd */ |
f427c8b0 | 1127 | rb_strlcpy(client_p->name, server_p->name, sizeof(client_p->name)); |
d4214e94 SA |
1128 | if(server_p->connect_host) |
1129 | rb_strlcpy(client_p->host, server_p->connect_host, sizeof(client_p->host)); | |
1130 | else | |
1131 | rb_strlcpy(client_p->host, buf, sizeof(client_p->host)); | |
1d02144f | 1132 | rb_strlcpy(client_p->sockhost, buf, sizeof(client_p->sockhost)); |
6c528b8e | 1133 | client_p->localClient->F = F; |
1d02144f | 1134 | /* shove the port number into the sockaddr */ |
d4214e94 | 1135 | SET_SS_PORT(&sa_connect, htons(server_p->port)); |
212380e3 AC |
1136 | |
1137 | /* | |
1138 | * Set up the initial server evilness, ripped straight from | |
1139 | * connect_server(), so don't blame me for it being evil. | |
1140 | * -- adrian | |
1141 | */ | |
1142 | ||
6c528b8e | 1143 | if(!rb_set_buffers(client_p->localClient->F, READBUF_SIZE)) |
212380e3 | 1144 | { |
825ddf13 | 1145 | ilog_error("setting the buffer size for a server connection"); |
212380e3 AC |
1146 | } |
1147 | ||
1148 | /* | |
1149 | * Attach config entries to client here rather than in | |
1150 | * serv_connect_callback(). This to avoid null pointer references. | |
1151 | */ | |
1152 | attach_server_conf(client_p, server_p); | |
1153 | ||
1154 | /* | |
1155 | * at this point we have a connection in progress and C/N lines | |
1156 | * attached to the client, the socket info should be saved in the | |
1157 | * client and it should either be resolved or have a valid address. | |
1158 | * | |
1159 | * The socket has been connected or connect is in progress. | |
1160 | */ | |
1161 | make_server(client_p); | |
1d02144f | 1162 | if(by && IsClient(by)) |
4d5a902f | 1163 | rb_strlcpy(client_p->serv->by, by->name, sizeof(client_p->serv->by)); |
212380e3 | 1164 | else |
1d02144f AC |
1165 | strcpy(client_p->serv->by, "AutoConn."); |
1166 | ||
212380e3 | 1167 | SetConnecting(client_p); |
330fc5c1 | 1168 | rb_dlinkAddTail(client_p, &client_p->node, &global_client_list); |
212380e3 | 1169 | |
d4214e94 | 1170 | if(GET_SS_FAMILY(&sa_bind) == AF_UNSPEC) |
212380e3 | 1171 | { |
d4214e94 SA |
1172 | if(GET_SS_FAMILY(&sa_connect) == GET_SS_FAMILY(&ServerInfo.bind4)) |
1173 | sa_bind = ServerInfo.bind4; | |
ccda6e3f | 1174 | #ifdef RB_IPV6 |
d4214e94 SA |
1175 | if(GET_SS_FAMILY(&sa_connect) == GET_SS_FAMILY(&ServerInfo.bind6)) |
1176 | sa_bind = ServerInfo.bind6; | |
17648928 | 1177 | #endif |
abe5dd20 | 1178 | } |
1d02144f | 1179 | |
d4214e94 SA |
1180 | rb_connect_tcp(client_p->localClient->F, |
1181 | (struct sockaddr *)&sa_connect, | |
1182 | GET_SS_FAMILY(&sa_bind) == AF_UNSPEC ? NULL : (struct sockaddr *)&sa_bind, | |
d4214e94 SA |
1183 | ServerConfSSL(server_p) ? serv_connect_ssl_callback : serv_connect_callback, |
1184 | client_p, ConfigFileEntry.connect_timeout); | |
1d02144f | 1185 | return 1; |
212380e3 AC |
1186 | } |
1187 | ||
f4a759c5 VY |
1188 | static void |
1189 | serv_connect_ssl_callback(rb_fde_t *F, int status, void *data) | |
1190 | { | |
1191 | struct Client *client_p = data; | |
1192 | rb_fde_t *xF[2]; | |
9ec51326 | 1193 | rb_connect_sockaddr(F, (struct sockaddr *)&client_p->localClient->ip, sizeof(client_p->localClient->ip)); |
f4a759c5 VY |
1194 | if(status != RB_OK) |
1195 | { | |
9ec51326 JT |
1196 | /* Print error message, just like non-SSL. */ |
1197 | serv_connect_callback(F, status, data); | |
f4a759c5 VY |
1198 | return; |
1199 | } | |
eda22d87 JT |
1200 | if(rb_socketpair(AF_UNIX, SOCK_STREAM, 0, &xF[0], &xF[1], "Outgoing ssld connection") == -1) |
1201 | { | |
1202 | ilog_error("rb_socketpair failed for server"); | |
1203 | serv_connect_callback(F, RB_ERROR, data); | |
1204 | return; | |
55abcbb2 | 1205 | |
eda22d87 | 1206 | } |
f4a759c5 | 1207 | client_p->localClient->F = xF[0]; |
53789fdd | 1208 | client_p->localClient->ssl_callback = serv_connect_ssl_open_callback; |
f4a759c5 | 1209 | |
de7cf7e0 | 1210 | client_p->localClient->ssl_ctl = start_ssld_connect(F, xF[1], connid_get(client_p)); |
5e270e7d SA |
1211 | if(!client_p->localClient->ssl_ctl) |
1212 | { | |
1213 | serv_connect_callback(client_p->localClient->F, RB_ERROR, data); | |
1214 | return; | |
1215 | } | |
f4a759c5 | 1216 | SetSSL(client_p); |
c6d72037 VY |
1217 | } |
1218 | ||
53789fdd SA |
1219 | static int |
1220 | serv_connect_ssl_open_callback(struct Client *client_p, int status) | |
1221 | { | |
1222 | serv_connect_callback(client_p->localClient->F, status, client_p); | |
1223 | return 1; /* suppress default exit_client handler for status != RB_OK */ | |
1224 | } | |
1225 | ||
212380e3 AC |
1226 | /* |
1227 | * serv_connect_callback() - complete a server connection. | |
55abcbb2 | 1228 | * |
212380e3 AC |
1229 | * This routine is called after the server connection attempt has |
1230 | * completed. If unsucessful, an error is sent to ops and the client | |
1231 | * is closed. If sucessful, it goes through the initialisation/check | |
1232 | * procedures, the capabilities are sent, and the socket is then | |
1233 | * marked for reading. | |
1234 | */ | |
1235 | static void | |
6c528b8e | 1236 | serv_connect_callback(rb_fde_t *F, int status, void *data) |
212380e3 AC |
1237 | { |
1238 | struct Client *client_p = data; | |
1239 | struct server_conf *server_p; | |
1240 | char *errstr; | |
1241 | ||
1242 | /* First, make sure its a real client! */ | |
1243 | s_assert(client_p != NULL); | |
6c528b8e | 1244 | s_assert(client_p->localClient->F == F); |
212380e3 AC |
1245 | |
1246 | if(client_p == NULL) | |
1247 | return; | |
1248 | ||
1249 | /* while we were waiting for the callback, its possible this already | |
1250 | * linked in.. --fl | |
1251 | */ | |
1252 | if(find_server(NULL, client_p->name) != NULL) | |
1253 | { | |
1254 | exit_client(client_p, client_p, &me, "Server Exists"); | |
1255 | return; | |
1256 | } | |
1257 | ||
f4a759c5 | 1258 | if(client_p->localClient->ssl_ctl == NULL) |
c6d72037 VY |
1259 | rb_connect_sockaddr(F, (struct sockaddr *)&client_p->localClient->ip, sizeof(client_p->localClient->ip)); |
1260 | ||
212380e3 | 1261 | /* Check the status */ |
6c528b8e | 1262 | if(status != RB_OK) |
212380e3 AC |
1263 | { |
1264 | /* COMM_ERR_TIMEOUT wont have an errno associated with it, | |
1265 | * the others will.. --fl | |
1266 | */ | |
4fbb7362 | 1267 | if(status == RB_ERR_TIMEOUT || status == RB_ERROR_SSL) |
212380e3 AC |
1268 | { |
1269 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1270 | "Error connecting to %s[%s]: %s", | |
55abcbb2 | 1271 | client_p->name, |
212380e3 | 1272 | "255.255.255.255", |
b2f0da88 | 1273 | rb_errstr(status)); |
212380e3 AC |
1274 | ilog(L_SERVER, "Error connecting to %s[%s]: %s", |
1275 | client_p->name, client_p->sockhost, | |
b2f0da88 | 1276 | rb_errstr(status)); |
212380e3 AC |
1277 | } |
1278 | else | |
1279 | { | |
6c528b8e | 1280 | errstr = strerror(rb_get_sockerr(F)); |
212380e3 AC |
1281 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, |
1282 | "Error connecting to %s[%s]: %s (%s)", | |
1283 | client_p->name, | |
212380e3 | 1284 | "255.255.255.255", |
b2f0da88 | 1285 | rb_errstr(status), errstr); |
212380e3 AC |
1286 | ilog(L_SERVER, "Error connecting to %s[%s]: %s (%s)", |
1287 | client_p->name, client_p->sockhost, | |
b2f0da88 | 1288 | rb_errstr(status), errstr); |
212380e3 AC |
1289 | } |
1290 | ||
b2f0da88 | 1291 | exit_client(client_p, client_p, &me, rb_errstr(status)); |
212380e3 AC |
1292 | return; |
1293 | } | |
1294 | ||
1295 | /* COMM_OK, so continue the connection procedure */ | |
1296 | /* Get the C/N lines */ | |
1297 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
1298 | { | |
1299 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, "Lost connect{} block for %s", | |
b3ebc7ab | 1300 | client_p->name); |
212380e3 AC |
1301 | exit_client(client_p, client_p, &me, "Lost connect{} block"); |
1302 | return; | |
1303 | } | |
1304 | ||
65f43a4f SA |
1305 | if(server_p->certfp && (!client_p->certfp || rb_strcasecmp(server_p->certfp, client_p->certfp) != 0)) |
1306 | { | |
1307 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1308 | "Connection to %s has invalid certificate fingerprint %s", | |
1309 | client_p->name, client_p->certfp); | |
1310 | ilog(L_SERVER, "Access denied, invalid certificate fingerprint %s from %s", | |
1311 | client_p->certfp, log_client_name(client_p, SHOW_IP)); | |
1312 | ||
1313 | exit_client(client_p, client_p, &me, "Invalid fingerprint."); | |
1314 | return; | |
1315 | } | |
1316 | ||
212380e3 AC |
1317 | /* Next, send the initial handshake */ |
1318 | SetHandshake(client_p); | |
1319 | ||
ff0cc1e6 | 1320 | /* the server may be linking based on certificate fingerprint now. --nenolod */ |
55abcbb2 | 1321 | sendto_one(client_p, "PASS %s TS %d :%s", |
ff0cc1e6 | 1322 | EmptyString(server_p->spasswd) ? "*" : server_p->spasswd, TS_CURRENT, me.id); |
212380e3 AC |
1323 | |
1324 | /* pass my info to the new server */ | |
ffedad8d | 1325 | send_capabilities(client_p, default_server_capabs | CAP_MASK |
212380e3 AC |
1326 | | (ServerConfCompressed(server_p) ? CAP_ZIP_SUPPORTED : 0) |
1327 | | (ServerConfTb(server_p) ? CAP_TB : 0)); | |
1328 | ||
1329 | sendto_one(client_p, "SERVER %s 1 :%s%s", | |
1330 | me.name, | |
1331 | ConfigServerHide.hidden ? "(H) " : "", me.info); | |
1332 | ||
55abcbb2 | 1333 | /* |
212380e3 AC |
1334 | * If we've been marked dead because a send failed, just exit |
1335 | * here now and save everyone the trouble of us ever existing. | |
1336 | */ | |
1337 | if(IsAnyDead(client_p)) | |
1338 | { | |
1339 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1340 | "%s went dead during handshake", client_p->name); | |
1341 | exit_client(client_p, client_p, &me, "Went dead during handshake"); | |
1342 | return; | |
1343 | } | |
1344 | ||
1345 | /* don't move to serv_list yet -- we haven't sent a burst! */ | |
1346 | ||
1347 | /* If we get here, we're ok, so lets start reading some data */ | |
6c528b8e | 1348 | read_packet(F, client_p); |
212380e3 | 1349 | } |