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212380e3 | 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 | |
23 | * | |
24 | * $Id: s_serv.c 2723 2006-11-09 23:35:48Z jilles $ | |
25 | */ | |
26 | ||
27 | #include "stdinc.h" | |
28 | ||
29 | #ifdef HAVE_LIBCRYPTO | |
30 | #include <openssl/rsa.h> | |
31 | #endif | |
32 | ||
33 | #include "tools.h" | |
34 | #include "s_serv.h" | |
35 | #include "class.h" | |
36 | #include "client.h" | |
37 | #include "common.h" | |
38 | #include "event.h" | |
39 | #include "hash.h" | |
40 | #include "irc_string.h" | |
41 | #include "sprintf_irc.h" | |
42 | #include "ircd.h" | |
43 | #include "ircd_defs.h" | |
44 | #include "numeric.h" | |
45 | #include "packet.h" | |
46 | #include "res.h" | |
47 | #include "commio.h" | |
48 | #include "s_conf.h" | |
49 | #include "s_newconf.h" | |
50 | #include "s_log.h" | |
51 | #include "s_stats.h" | |
52 | #include "s_user.h" | |
53 | #include "scache.h" | |
54 | #include "send.h" | |
55 | #include "client.h" | |
56 | #include "memory.h" | |
57 | #include "channel.h" /* chcap_usage_counts stuff... */ | |
58 | #include "hook.h" | |
59 | #include "msg.h" | |
60 | ||
61 | extern char *crypt(); | |
62 | ||
63 | #ifndef INADDR_NONE | |
64 | #define INADDR_NONE ((unsigned int) 0xffffffff) | |
65 | #endif | |
66 | ||
67 | #ifndef HAVE_SOCKETPAIR | |
68 | static int inet_socketpair(int d, int type, int protocol, int sv[2]); | |
69 | #endif | |
70 | ||
71 | int MaxConnectionCount = 1; | |
72 | int MaxClientCount = 1; | |
73 | int refresh_user_links = 0; | |
74 | ||
75 | static char buf[BUFSIZE]; | |
76 | ||
77 | static void start_io(struct Client *server); | |
78 | ||
79 | static SlinkRplHnd slink_error; | |
80 | static SlinkRplHnd slink_zipstats; | |
81 | /* | |
82 | * list of recognized server capabilities. "TS" is not on the list | |
83 | * because all servers that we talk to already do TS, and the kludged | |
84 | * extra argument to "PASS" takes care of checking that. -orabidoo | |
85 | */ | |
86 | struct Capability captab[] = { | |
87 | /* name cap */ | |
88 | { "QS", CAP_QS }, | |
89 | { "EX", CAP_EX }, | |
90 | { "CHW", CAP_CHW}, | |
91 | { "IE", CAP_IE}, | |
92 | { "KLN", CAP_KLN}, | |
93 | { "GLN", CAP_GLN}, | |
94 | { "KNOCK", CAP_KNOCK}, | |
95 | { "ZIP", CAP_ZIP}, | |
96 | { "TB", CAP_TB}, | |
97 | { "UNKLN", CAP_UNKLN}, | |
98 | { "CLUSTER", CAP_CLUSTER}, | |
99 | { "ENCAP", CAP_ENCAP }, | |
100 | { "SERVICES", CAP_SERVICE }, | |
101 | { "RSFNC", CAP_RSFNC }, | |
102 | { "SAVE", CAP_SAVE }, | |
103 | { "EUID", CAP_EUID }, | |
104 | {0, 0} | |
105 | }; | |
106 | ||
107 | struct SlinkRplDef slinkrpltab[] = { | |
108 | {SLINKRPL_ERROR, slink_error, SLINKRPL_FLAG_DATA}, | |
109 | {SLINKRPL_ZIPSTATS, slink_zipstats, SLINKRPL_FLAG_DATA}, | |
110 | {0, 0, 0}, | |
111 | }; | |
112 | ||
113 | static int fork_server(struct Client *client_p); | |
114 | ||
115 | static CNCB serv_connect_callback; | |
116 | ||
117 | void | |
118 | slink_error(unsigned int rpl, unsigned int len, unsigned char *data, struct Client *server_p) | |
119 | { | |
120 | char squitreason[256]; | |
121 | ||
122 | s_assert(rpl == SLINKRPL_ERROR); | |
123 | ||
124 | s_assert(len < 256); | |
125 | data[len - 1] = '\0'; | |
126 | ||
127 | sendto_realops_snomask(SNO_GENERAL, L_ALL, "SlinkError for %s: %s", server_p->name, data); | |
128 | snprintf(squitreason, sizeof squitreason, "servlink error: %s", data); | |
129 | exit_client(server_p, server_p, &me, squitreason); | |
130 | } | |
131 | ||
132 | void | |
133 | slink_zipstats(unsigned int rpl, unsigned int len, unsigned char *data, struct Client *server_p) | |
134 | { | |
135 | struct ZipStats zipstats; | |
136 | u_int32_t in = 0, in_wire = 0, out = 0, out_wire = 0; | |
137 | int i = 0; | |
138 | ||
139 | s_assert(rpl == SLINKRPL_ZIPSTATS); | |
140 | s_assert(len == 16); | |
141 | s_assert(IsCapable(server_p, CAP_ZIP)); | |
142 | ||
143 | /* Yes, it needs to be done this way, no we cannot let the compiler | |
144 | * work with the pointer to the structure. This works around a GCC | |
145 | * bug on SPARC that affects all versions at the time of this writing. | |
146 | * I will feed you to the creatures living in RMS's beard if you do | |
147 | * not leave this as is, without being sure that you are not causing | |
148 | * regression for most of our installed SPARC base. | |
149 | * -jmallett, 04/27/2002 | |
150 | */ | |
151 | memcpy(&zipstats, &server_p->localClient->zipstats, sizeof(struct ZipStats)); | |
152 | ||
153 | in |= (data[i++] << 24); | |
154 | in |= (data[i++] << 16); | |
155 | in |= (data[i++] << 8); | |
156 | in |= (data[i++]); | |
157 | ||
158 | in_wire |= (data[i++] << 24); | |
159 | in_wire |= (data[i++] << 16); | |
160 | in_wire |= (data[i++] << 8); | |
161 | in_wire |= (data[i++]); | |
162 | ||
163 | out |= (data[i++] << 24); | |
164 | out |= (data[i++] << 16); | |
165 | out |= (data[i++] << 8); | |
166 | out |= (data[i++]); | |
167 | ||
168 | out_wire |= (data[i++] << 24); | |
169 | out_wire |= (data[i++] << 16); | |
170 | out_wire |= (data[i++] << 8); | |
171 | out_wire |= (data[i++]); | |
172 | ||
173 | zipstats.in += in; | |
174 | zipstats.inK += zipstats.in >> 10; | |
175 | zipstats.in &= 0x03ff; | |
176 | ||
177 | zipstats.in_wire += in_wire; | |
178 | zipstats.inK_wire += zipstats.in_wire >> 10; | |
179 | zipstats.in_wire &= 0x03ff; | |
180 | ||
181 | zipstats.out += out; | |
182 | zipstats.outK += zipstats.out >> 10; | |
183 | zipstats.out &= 0x03ff; | |
184 | ||
185 | zipstats.out_wire += out_wire; | |
186 | zipstats.outK_wire += zipstats.out_wire >> 10; | |
187 | zipstats.out_wire &= 0x03ff; | |
188 | ||
189 | if(zipstats.inK > 0) | |
190 | zipstats.in_ratio = | |
191 | (((double) (zipstats.inK - zipstats.inK_wire) / | |
192 | (double) zipstats.inK) * 100.00); | |
193 | else | |
194 | zipstats.in_ratio = 0; | |
195 | ||
196 | if(zipstats.outK > 0) | |
197 | zipstats.out_ratio = | |
198 | (((double) (zipstats.outK - zipstats.outK_wire) / | |
199 | (double) zipstats.outK) * 100.00); | |
200 | else | |
201 | zipstats.out_ratio = 0; | |
202 | ||
203 | memcpy(&server_p->localClient->zipstats, &zipstats, sizeof(struct ZipStats)); | |
204 | } | |
205 | ||
206 | void | |
207 | collect_zipstats(void *unused) | |
208 | { | |
209 | dlink_node *ptr; | |
210 | struct Client *target_p; | |
211 | ||
212 | DLINK_FOREACH(ptr, serv_list.head) | |
213 | { | |
214 | target_p = ptr->data; | |
215 | if(IsCapable(target_p, CAP_ZIP)) | |
216 | { | |
217 | /* only bother if we haven't already got something queued... */ | |
218 | if(!target_p->localClient->slinkq) | |
219 | { | |
220 | target_p->localClient->slinkq = MyMalloc(1); /* sigh.. */ | |
221 | target_p->localClient->slinkq[0] = SLINKCMD_ZIPSTATS; | |
222 | target_p->localClient->slinkq_ofs = 0; | |
223 | target_p->localClient->slinkq_len = 1; | |
224 | send_queued_slink_write(target_p->localClient->ctrlfd, target_p); | |
225 | } | |
226 | } | |
227 | } | |
228 | } | |
229 | ||
230 | /* | |
231 | * hunt_server - Do the basic thing in delivering the message (command) | |
232 | * across the relays to the specific server (server) for | |
233 | * actions. | |
234 | * | |
235 | * Note: The command is a format string and *MUST* be | |
236 | * of prefixed style (e.g. ":%s COMMAND %s ..."). | |
237 | * Command can have only max 8 parameters. | |
238 | * | |
239 | * server parv[server] is the parameter identifying the | |
240 | * target server. | |
241 | * | |
242 | * *WARNING* | |
243 | * parv[server] is replaced with the pointer to the | |
244 | * real servername from the matched client (I'm lazy | |
245 | * now --msa). | |
246 | * | |
247 | * returns: (see #defines) | |
248 | */ | |
249 | int | |
250 | hunt_server(struct Client *client_p, struct Client *source_p, | |
251 | const char *command, int server, int parc, const char *parv[]) | |
252 | { | |
253 | struct Client *target_p; | |
254 | int wilds; | |
255 | dlink_node *ptr; | |
256 | const char *old; | |
257 | char *new; | |
258 | ||
259 | /* | |
260 | * Assume it's me, if no server | |
261 | */ | |
262 | if(parc <= server || EmptyString(parv[server]) || | |
263 | match(me.name, parv[server]) || match(parv[server], me.name) || | |
264 | (strcmp(parv[server], me.id) == 0)) | |
265 | return (HUNTED_ISME); | |
266 | ||
267 | new = LOCAL_COPY(parv[server]); | |
268 | ||
269 | /* | |
270 | * These are to pickup matches that would cause the following | |
271 | * message to go in the wrong direction while doing quick fast | |
272 | * non-matching lookups. | |
273 | */ | |
274 | if(MyClient(source_p)) | |
275 | target_p = find_named_client(new); | |
276 | else | |
277 | target_p = find_client(new); | |
278 | ||
279 | if(target_p) | |
280 | if(target_p->from == source_p->from && !MyConnect(target_p)) | |
281 | target_p = NULL; | |
282 | ||
283 | if(target_p == NULL && (target_p = find_server(source_p, new))) | |
284 | if(target_p->from == source_p->from && !MyConnect(target_p)) | |
285 | target_p = NULL; | |
286 | ||
287 | collapse(new); | |
288 | wilds = (strchr(new, '?') || strchr(new, '*')); | |
289 | ||
290 | /* | |
291 | * Again, if there are no wild cards involved in the server | |
292 | * name, use the hash lookup | |
293 | */ | |
294 | if(!target_p) | |
295 | { | |
296 | if(!wilds) | |
297 | { | |
298 | if(MyClient(source_p) || !IsDigit(parv[server][0])) | |
299 | sendto_one_numeric(source_p, ERR_NOSUCHSERVER, | |
300 | form_str(ERR_NOSUCHSERVER), | |
301 | parv[server]); | |
302 | return (HUNTED_NOSUCH); | |
303 | } | |
304 | else | |
305 | { | |
306 | target_p = NULL; | |
307 | ||
308 | DLINK_FOREACH(ptr, global_client_list.head) | |
309 | { | |
310 | if(match(new, ((struct Client *) (ptr->data))->name)) | |
311 | { | |
312 | target_p = ptr->data; | |
313 | break; | |
314 | } | |
315 | } | |
316 | } | |
317 | } | |
318 | ||
319 | if(target_p) | |
320 | { | |
321 | if(!IsRegistered(target_p)) | |
322 | { | |
323 | sendto_one_numeric(source_p, ERR_NOSUCHSERVER, | |
324 | form_str(ERR_NOSUCHSERVER), | |
325 | parv[server]); | |
326 | return HUNTED_NOSUCH; | |
327 | } | |
328 | ||
329 | if(IsMe(target_p) || MyClient(target_p)) | |
330 | return HUNTED_ISME; | |
331 | ||
332 | old = parv[server]; | |
333 | parv[server] = get_id(target_p, target_p); | |
334 | ||
335 | sendto_one(target_p, command, get_id(source_p, target_p), | |
336 | parv[1], parv[2], parv[3], parv[4], parv[5], parv[6], parv[7], parv[8]); | |
337 | parv[server] = old; | |
338 | return (HUNTED_PASS); | |
339 | } | |
340 | ||
341 | if(!IsDigit(parv[server][0])) | |
342 | sendto_one_numeric(source_p, ERR_NOSUCHSERVER, | |
343 | form_str(ERR_NOSUCHSERVER), parv[server]); | |
344 | return (HUNTED_NOSUCH); | |
345 | } | |
346 | ||
347 | /* | |
348 | * try_connections - scan through configuration and try new connections. | |
349 | * Returns the calendar time when the next call to this | |
350 | * function should be made latest. (No harm done if this | |
351 | * is called earlier or later...) | |
352 | */ | |
353 | void | |
354 | try_connections(void *unused) | |
355 | { | |
356 | struct Client *client_p; | |
357 | struct server_conf *server_p = NULL; | |
358 | struct server_conf *tmp_p; | |
359 | struct Class *cltmp; | |
360 | dlink_node *ptr; | |
361 | int connecting = FALSE; | |
362 | int confrq = 0; | |
363 | time_t next = 0; | |
364 | ||
365 | DLINK_FOREACH(ptr, server_conf_list.head) | |
366 | { | |
367 | tmp_p = ptr->data; | |
368 | ||
369 | if(ServerConfIllegal(tmp_p) || !ServerConfAutoconn(tmp_p)) | |
370 | continue; | |
371 | ||
372 | cltmp = tmp_p->class; | |
373 | ||
374 | /* | |
375 | * Skip this entry if the use of it is still on hold until | |
376 | * future. Otherwise handle this entry (and set it on hold | |
377 | * until next time). Will reset only hold times, if already | |
378 | * made one successfull connection... [this algorithm is | |
379 | * a bit fuzzy... -- msa >;) ] | |
380 | */ | |
381 | if(tmp_p->hold > CurrentTime) | |
382 | { | |
383 | if(next > tmp_p->hold || next == 0) | |
384 | next = tmp_p->hold; | |
385 | continue; | |
386 | } | |
387 | ||
388 | confrq = get_con_freq(cltmp); | |
389 | tmp_p->hold = CurrentTime + confrq; | |
390 | ||
391 | /* | |
392 | * Found a CONNECT config with port specified, scan clients | |
393 | * and see if this server is already connected? | |
394 | */ | |
395 | client_p = find_server(NULL, tmp_p->name); | |
396 | ||
397 | if(!client_p && (CurrUsers(cltmp) < MaxUsers(cltmp)) && !connecting) | |
398 | { | |
399 | server_p = tmp_p; | |
400 | ||
401 | /* We connect only one at time... */ | |
402 | connecting = TRUE; | |
403 | } | |
404 | ||
405 | if((next > tmp_p->hold) || (next == 0)) | |
406 | next = tmp_p->hold; | |
407 | } | |
408 | ||
409 | /* TODO: change this to set active flag to 0 when added to event! --Habeeb */ | |
410 | if(GlobalSetOptions.autoconn == 0) | |
411 | return; | |
412 | ||
413 | if(!connecting) | |
414 | return; | |
415 | ||
416 | /* move this connect entry to end.. */ | |
417 | dlinkDelete(&server_p->node, &server_conf_list); | |
418 | dlinkAddTail(server_p, &server_p->node, &server_conf_list); | |
419 | ||
420 | /* | |
421 | * We used to only print this if serv_connect() actually | |
422 | * suceeded, but since comm_tcp_connect() can call the callback | |
423 | * immediately if there is an error, we were getting error messages | |
424 | * in the wrong order. SO, we just print out the activated line, | |
425 | * and let serv_connect() / serv_connect_callback() print an | |
426 | * error afterwards if it fails. | |
427 | * -- adrian | |
428 | */ | |
429 | #ifndef HIDE_SERVERS_IPS | |
430 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
431 | "Connection to %s[%s] activated.", | |
432 | server_p->name, server_p->host); | |
433 | #else | |
434 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
435 | "Connection to %s activated", | |
436 | server_p->name); | |
437 | #endif | |
438 | ||
439 | serv_connect(server_p, 0); | |
440 | } | |
441 | ||
442 | int | |
443 | check_server(const char *name, struct Client *client_p) | |
444 | { | |
445 | struct server_conf *server_p = NULL; | |
446 | struct server_conf *tmp_p; | |
447 | dlink_node *ptr; | |
448 | int error = -1; | |
449 | ||
450 | s_assert(NULL != client_p); | |
451 | if(client_p == NULL) | |
452 | return error; | |
453 | ||
454 | if(!(client_p->localClient->passwd)) | |
455 | return -2; | |
456 | ||
457 | if(strlen(name) > HOSTLEN) | |
458 | return -4; | |
459 | ||
460 | DLINK_FOREACH(ptr, server_conf_list.head) | |
461 | { | |
462 | tmp_p = ptr->data; | |
463 | ||
464 | if(ServerConfIllegal(tmp_p)) | |
465 | continue; | |
466 | ||
467 | if(!match(tmp_p->name, name)) | |
468 | continue; | |
469 | ||
470 | error = -3; | |
471 | ||
472 | /* XXX: Fix me for IPv6 */ | |
473 | /* XXX sockhost is the IPv4 ip as a string */ | |
474 | if(match(tmp_p->host, client_p->host) || | |
475 | match(tmp_p->host, client_p->sockhost)) | |
476 | { | |
477 | error = -2; | |
478 | ||
479 | if(ServerConfEncrypted(tmp_p)) | |
480 | { | |
481 | if(!strcmp(tmp_p->passwd, crypt(client_p->localClient->passwd, | |
482 | tmp_p->passwd))) | |
483 | { | |
484 | server_p = tmp_p; | |
485 | break; | |
486 | } | |
487 | } | |
488 | else if(!strcmp(tmp_p->passwd, client_p->localClient->passwd)) | |
489 | { | |
490 | server_p = tmp_p; | |
491 | break; | |
492 | } | |
493 | } | |
494 | } | |
495 | ||
496 | if(server_p == NULL) | |
497 | return error; | |
498 | ||
499 | attach_server_conf(client_p, server_p); | |
500 | ||
501 | /* clear ZIP/TB if they support but we dont want them */ | |
502 | #ifdef HAVE_LIBZ | |
503 | if(!ServerConfCompressed(server_p)) | |
504 | #endif | |
505 | ClearCap(client_p, CAP_ZIP); | |
506 | ||
507 | if(!ServerConfTb(server_p)) | |
508 | ClearCap(client_p, CAP_TB); | |
509 | ||
510 | return 0; | |
511 | } | |
512 | ||
513 | /* | |
514 | * send_capabilities | |
515 | * | |
516 | * inputs - Client pointer to send to | |
517 | * - int flag of capabilities that this server has | |
518 | * output - NONE | |
519 | * side effects - send the CAPAB line to a server -orabidoo | |
520 | * | |
521 | */ | |
522 | void | |
523 | send_capabilities(struct Client *client_p, int cap_can_send) | |
524 | { | |
525 | struct Capability *cap; | |
526 | char msgbuf[BUFSIZE]; | |
527 | char *t; | |
528 | int tl; | |
529 | ||
530 | t = msgbuf; | |
531 | ||
532 | for (cap = captab; cap->name; ++cap) | |
533 | { | |
534 | if(cap->cap & cap_can_send) | |
535 | { | |
536 | tl = ircsprintf(t, "%s ", cap->name); | |
537 | t += tl; | |
538 | } | |
539 | } | |
540 | ||
541 | t--; | |
542 | *t = '\0'; | |
543 | ||
544 | sendto_one(client_p, "CAPAB :%s", msgbuf); | |
545 | } | |
546 | ||
547 | /* burst_modes_TS5() | |
548 | * | |
549 | * input - client to burst to, channel name, list to burst, mode flag | |
550 | * output - | |
551 | * side effects - client is sent a list of +b, or +e, or +I modes | |
552 | */ | |
553 | static void | |
554 | burst_modes_TS5(struct Client *client_p, char *chname, dlink_list *list, char flag) | |
555 | { | |
556 | dlink_node *ptr; | |
557 | struct Ban *banptr; | |
558 | char mbuf[MODEBUFLEN]; | |
559 | char pbuf[BUFSIZE]; | |
560 | int tlen; | |
561 | int mlen; | |
562 | int cur_len; | |
563 | char *mp; | |
564 | char *pp; | |
565 | int count = 0; | |
566 | ||
567 | mlen = ircsprintf(buf, ":%s MODE %s +", me.name, chname); | |
568 | cur_len = mlen; | |
569 | ||
570 | mp = mbuf; | |
571 | pp = pbuf; | |
572 | ||
573 | DLINK_FOREACH(ptr, list->head) | |
574 | { | |
575 | banptr = ptr->data; | |
576 | tlen = strlen(banptr->banstr) + 3; | |
577 | ||
578 | /* uh oh */ | |
579 | if(tlen > MODEBUFLEN) | |
580 | continue; | |
581 | ||
582 | if((count >= MAXMODEPARAMS) || ((cur_len + tlen + 2) > (BUFSIZE - 3))) | |
583 | { | |
584 | sendto_one(client_p, "%s%s %s", buf, mbuf, pbuf); | |
585 | ||
586 | mp = mbuf; | |
587 | pp = pbuf; | |
588 | cur_len = mlen; | |
589 | count = 0; | |
590 | } | |
591 | ||
592 | *mp++ = flag; | |
593 | *mp = '\0'; | |
594 | pp += ircsprintf(pp, "%s ", banptr->banstr); | |
595 | cur_len += tlen; | |
596 | count++; | |
597 | } | |
598 | ||
599 | if(count != 0) | |
600 | sendto_one(client_p, "%s%s %s", buf, mbuf, pbuf); | |
601 | } | |
602 | ||
603 | /* burst_modes_TS6() | |
604 | * | |
605 | * input - client to burst to, channel name, list to burst, mode flag | |
606 | * output - | |
607 | * side effects - client is sent a list of +b, +e, or +I modes | |
608 | */ | |
609 | static void | |
610 | burst_modes_TS6(struct Client *client_p, struct Channel *chptr, | |
611 | dlink_list *list, char flag) | |
612 | { | |
613 | dlink_node *ptr; | |
614 | struct Ban *banptr; | |
615 | char *t; | |
616 | int tlen; | |
617 | int mlen; | |
618 | int cur_len; | |
619 | ||
620 | cur_len = mlen = ircsprintf(buf, ":%s BMASK %ld %s %c :", | |
621 | me.id, (long) chptr->channelts, chptr->chname, flag); | |
622 | t = buf + mlen; | |
623 | ||
624 | DLINK_FOREACH(ptr, list->head) | |
625 | { | |
626 | banptr = ptr->data; | |
627 | ||
628 | tlen = strlen(banptr->banstr) + 1; | |
629 | ||
630 | /* uh oh */ | |
631 | if(cur_len + tlen > BUFSIZE - 3) | |
632 | { | |
633 | /* the one we're trying to send doesnt fit at all! */ | |
634 | if(cur_len == mlen) | |
635 | { | |
636 | s_assert(0); | |
637 | continue; | |
638 | } | |
639 | ||
640 | /* chop off trailing space and send.. */ | |
641 | *(t-1) = '\0'; | |
642 | sendto_one(client_p, "%s", buf); | |
643 | cur_len = mlen; | |
644 | t = buf + mlen; | |
645 | } | |
646 | ||
647 | ircsprintf(t, "%s ", banptr->banstr); | |
648 | t += tlen; | |
649 | cur_len += tlen; | |
650 | } | |
651 | ||
652 | /* cant ever exit the loop above without having modified buf, | |
653 | * chop off trailing space and send. | |
654 | */ | |
655 | *(t-1) = '\0'; | |
656 | sendto_one(client_p, "%s", buf); | |
657 | } | |
658 | ||
659 | /* | |
660 | * burst_TS5 | |
661 | * | |
662 | * inputs - client (server) to send nick towards | |
663 | * - client to send nick for | |
664 | * output - NONE | |
665 | * side effects - NICK message is sent towards given client_p | |
666 | */ | |
667 | static void | |
668 | burst_TS5(struct Client *client_p) | |
669 | { | |
670 | static char ubuf[12]; | |
671 | struct Client *target_p; | |
672 | struct Channel *chptr; | |
673 | struct membership *msptr; | |
674 | hook_data_client hclientinfo; | |
675 | hook_data_channel hchaninfo; | |
676 | dlink_node *ptr; | |
677 | dlink_node *uptr; | |
678 | char *t; | |
679 | int tlen, mlen; | |
680 | int cur_len = 0; | |
681 | ||
682 | hclientinfo.client = hchaninfo.client = client_p; | |
683 | ||
684 | DLINK_FOREACH(ptr, global_client_list.head) | |
685 | { | |
686 | target_p = ptr->data; | |
687 | ||
688 | if(!IsPerson(target_p)) | |
689 | continue; | |
690 | ||
691 | send_umode(NULL, target_p, 0, 0, ubuf); | |
692 | if(!*ubuf) | |
693 | { | |
694 | ubuf[0] = '+'; | |
695 | ubuf[1] = '\0'; | |
696 | } | |
697 | ||
698 | sendto_one(client_p, "NICK %s %d %ld %s %s %s %s :%s", | |
699 | target_p->name, target_p->hopcount + 1, | |
700 | (long) target_p->tsinfo, ubuf, | |
701 | target_p->username, target_p->host, | |
702 | target_p->user->server, target_p->info); | |
703 | ||
704 | if(IsDynSpoof(target_p)) | |
705 | sendto_one(client_p, ":%s ENCAP * REALHOST %s", | |
706 | target_p->name, target_p->orighost); | |
707 | if(!EmptyString(target_p->user->suser)) | |
708 | sendto_one(client_p, ":%s ENCAP * LOGIN %s", | |
709 | target_p->name, target_p->user->suser); | |
710 | ||
711 | if(ConfigFileEntry.burst_away && !EmptyString(target_p->user->away)) | |
712 | sendto_one(client_p, ":%s AWAY :%s", | |
713 | target_p->name, target_p->user->away); | |
714 | ||
715 | hclientinfo.target = target_p; | |
716 | call_hook(h_burst_client, &hclientinfo); | |
717 | } | |
718 | ||
719 | DLINK_FOREACH(ptr, global_channel_list.head) | |
720 | { | |
721 | chptr = ptr->data; | |
722 | ||
723 | if(*chptr->chname != '#') | |
724 | continue; | |
725 | ||
726 | cur_len = mlen = ircsprintf(buf, ":%s SJOIN %ld %s %s :", me.name, | |
727 | (long) chptr->channelts, chptr->chname, | |
728 | channel_modes(chptr, client_p)); | |
729 | ||
730 | t = buf + mlen; | |
731 | ||
732 | DLINK_FOREACH(uptr, chptr->members.head) | |
733 | { | |
734 | msptr = uptr->data; | |
735 | ||
736 | tlen = strlen(msptr->client_p->name) + 1; | |
737 | if(is_chanop(msptr)) | |
738 | tlen++; | |
739 | if(is_voiced(msptr)) | |
740 | tlen++; | |
741 | ||
742 | if(cur_len + tlen >= BUFSIZE - 3) | |
743 | { | |
744 | t--; | |
745 | *t = '\0'; | |
746 | sendto_one(client_p, "%s", buf); | |
747 | cur_len = mlen; | |
748 | t = buf + mlen; | |
749 | } | |
750 | ||
751 | ircsprintf(t, "%s%s ", find_channel_status(msptr, 1), | |
752 | msptr->client_p->name); | |
753 | ||
754 | cur_len += tlen; | |
755 | t += tlen; | |
756 | } | |
757 | ||
758 | if (dlink_list_length(&chptr->members) > 0) | |
759 | { | |
760 | /* remove trailing space */ | |
761 | t--; | |
762 | *t = '\0'; | |
763 | } | |
764 | sendto_one(client_p, "%s", buf); | |
765 | ||
766 | burst_modes_TS5(client_p, chptr->chname, &chptr->banlist, 'b'); | |
767 | ||
768 | if(IsCapable(client_p, CAP_EX)) | |
769 | burst_modes_TS5(client_p, chptr->chname, &chptr->exceptlist, 'e'); | |
770 | ||
771 | if(IsCapable(client_p, CAP_IE)) | |
772 | burst_modes_TS5(client_p, chptr->chname, &chptr->invexlist, 'I'); | |
773 | ||
774 | burst_modes_TS5(client_p, chptr->chname, &chptr->quietlist, 'q'); | |
775 | ||
776 | if(IsCapable(client_p, CAP_TB) && chptr->topic != NULL) | |
777 | sendto_one(client_p, ":%s TB %s %ld %s%s:%s", | |
778 | me.name, chptr->chname, (long) chptr->topic_time, | |
779 | ConfigChannel.burst_topicwho ? chptr->topic_info : "", | |
780 | ConfigChannel.burst_topicwho ? " " : "", | |
781 | chptr->topic); | |
782 | ||
783 | hchaninfo.chptr = chptr; | |
784 | call_hook(h_burst_channel, &hchaninfo); | |
785 | } | |
786 | ||
787 | hclientinfo.target = NULL; | |
788 | call_hook(h_burst_finished, &hclientinfo); | |
789 | } | |
790 | ||
791 | /* | |
792 | * burst_TS6 | |
793 | * | |
794 | * inputs - client (server) to send nick towards | |
795 | * - client to send nick for | |
796 | * output - NONE | |
797 | * side effects - NICK message is sent towards given client_p | |
798 | */ | |
799 | static void | |
800 | burst_TS6(struct Client *client_p) | |
801 | { | |
802 | static char ubuf[12]; | |
803 | struct Client *target_p; | |
804 | struct Channel *chptr; | |
805 | struct membership *msptr; | |
806 | hook_data_client hclientinfo; | |
807 | hook_data_channel hchaninfo; | |
808 | dlink_node *ptr; | |
809 | dlink_node *uptr; | |
810 | char *t; | |
811 | int tlen, mlen; | |
812 | int cur_len = 0; | |
813 | ||
814 | hclientinfo.client = hchaninfo.client = client_p; | |
815 | ||
816 | DLINK_FOREACH(ptr, global_client_list.head) | |
817 | { | |
818 | target_p = ptr->data; | |
819 | ||
820 | if(!IsPerson(target_p)) | |
821 | continue; | |
822 | ||
823 | send_umode(NULL, target_p, 0, 0, ubuf); | |
824 | if(!*ubuf) | |
825 | { | |
826 | ubuf[0] = '+'; | |
827 | ubuf[1] = '\0'; | |
828 | } | |
829 | ||
830 | if(has_id(target_p) && IsCapable(client_p, CAP_EUID)) | |
831 | sendto_one(client_p, ":%s EUID %s %d %ld %s %s %s %s %s %s %s :%s", | |
832 | target_p->servptr->id, target_p->name, | |
833 | target_p->hopcount + 1, | |
834 | (long) target_p->tsinfo, ubuf, | |
835 | target_p->username, target_p->host, | |
836 | IsIPSpoof(target_p) ? "0" : target_p->sockhost, | |
837 | target_p->id, | |
838 | IsDynSpoof(target_p) ? target_p->orighost : "*", | |
839 | EmptyString(target_p->user->suser) ? "*" : target_p->user->suser, | |
840 | target_p->info); | |
841 | else if(has_id(target_p)) | |
842 | sendto_one(client_p, ":%s UID %s %d %ld %s %s %s %s %s :%s", | |
843 | target_p->servptr->id, target_p->name, | |
844 | target_p->hopcount + 1, | |
845 | (long) target_p->tsinfo, ubuf, | |
846 | target_p->username, target_p->host, | |
847 | IsIPSpoof(target_p) ? "0" : target_p->sockhost, | |
848 | target_p->id, target_p->info); | |
849 | else | |
850 | sendto_one(client_p, "NICK %s %d %ld %s %s %s %s :%s", | |
851 | target_p->name, | |
852 | target_p->hopcount + 1, | |
853 | (long) target_p->tsinfo, | |
854 | ubuf, | |
855 | target_p->username, target_p->host, | |
856 | target_p->user->server, target_p->info); | |
857 | ||
858 | if(!has_id(target_p) || !IsCapable(client_p, CAP_EUID)) | |
859 | { | |
860 | if(IsDynSpoof(target_p)) | |
861 | sendto_one(client_p, ":%s ENCAP * REALHOST %s", | |
862 | use_id(target_p), target_p->orighost); | |
863 | if(!EmptyString(target_p->user->suser)) | |
864 | sendto_one(client_p, ":%s ENCAP * LOGIN %s", | |
865 | use_id(target_p), target_p->user->suser); | |
866 | } | |
867 | ||
868 | if(ConfigFileEntry.burst_away && !EmptyString(target_p->user->away)) | |
869 | sendto_one(client_p, ":%s AWAY :%s", | |
870 | use_id(target_p), | |
871 | target_p->user->away); | |
872 | ||
873 | hclientinfo.target = target_p; | |
874 | call_hook(h_burst_client, &hclientinfo); | |
875 | } | |
876 | ||
877 | DLINK_FOREACH(ptr, global_channel_list.head) | |
878 | { | |
879 | chptr = ptr->data; | |
880 | ||
881 | if(*chptr->chname != '#') | |
882 | continue; | |
883 | ||
884 | cur_len = mlen = ircsprintf(buf, ":%s SJOIN %ld %s %s :", me.id, | |
885 | (long) chptr->channelts, chptr->chname, | |
886 | channel_modes(chptr, client_p)); | |
887 | ||
888 | t = buf + mlen; | |
889 | ||
890 | DLINK_FOREACH(uptr, chptr->members.head) | |
891 | { | |
892 | msptr = uptr->data; | |
893 | ||
894 | tlen = strlen(use_id(msptr->client_p)) + 1; | |
895 | if(is_chanop(msptr)) | |
896 | tlen++; | |
897 | if(is_voiced(msptr)) | |
898 | tlen++; | |
899 | ||
900 | if(cur_len + tlen >= BUFSIZE - 3) | |
901 | { | |
902 | *(t-1) = '\0'; | |
903 | sendto_one(client_p, "%s", buf); | |
904 | cur_len = mlen; | |
905 | t = buf + mlen; | |
906 | } | |
907 | ||
908 | ircsprintf(t, "%s%s ", find_channel_status(msptr, 1), | |
909 | use_id(msptr->client_p)); | |
910 | ||
911 | cur_len += tlen; | |
912 | t += tlen; | |
913 | } | |
914 | ||
915 | if (dlink_list_length(&chptr->members) > 0) | |
916 | { | |
917 | /* remove trailing space */ | |
918 | *(t-1) = '\0'; | |
919 | } | |
920 | sendto_one(client_p, "%s", buf); | |
921 | ||
922 | if(dlink_list_length(&chptr->banlist) > 0) | |
923 | burst_modes_TS6(client_p, chptr, &chptr->banlist, 'b'); | |
924 | ||
925 | if(IsCapable(client_p, CAP_EX) && | |
926 | dlink_list_length(&chptr->exceptlist) > 0) | |
927 | burst_modes_TS6(client_p, chptr, &chptr->exceptlist, 'e'); | |
928 | ||
929 | if(IsCapable(client_p, CAP_IE) && | |
930 | dlink_list_length(&chptr->invexlist) > 0) | |
931 | burst_modes_TS6(client_p, chptr, &chptr->invexlist, 'I'); | |
932 | ||
933 | if(dlink_list_length(&chptr->quietlist) > 0) | |
934 | burst_modes_TS6(client_p, chptr, &chptr->quietlist, 'q'); | |
935 | ||
936 | if(IsCapable(client_p, CAP_TB) && chptr->topic != NULL) | |
937 | sendto_one(client_p, ":%s TB %s %ld %s%s:%s", | |
938 | me.id, chptr->chname, (long) chptr->topic_time, | |
939 | ConfigChannel.burst_topicwho ? chptr->topic_info : "", | |
940 | ConfigChannel.burst_topicwho ? " " : "", | |
941 | chptr->topic); | |
942 | ||
943 | hchaninfo.chptr = chptr; | |
944 | call_hook(h_burst_channel, &hchaninfo); | |
945 | } | |
946 | ||
947 | hclientinfo.target = NULL; | |
948 | call_hook(h_burst_finished, &hclientinfo); | |
949 | } | |
950 | ||
951 | /* | |
952 | * show_capabilities - show current server capabilities | |
953 | * | |
954 | * inputs - pointer to an struct Client | |
955 | * output - pointer to static string | |
956 | * side effects - build up string representing capabilities of server listed | |
957 | */ | |
958 | const char * | |
959 | show_capabilities(struct Client *target_p) | |
960 | { | |
961 | static char msgbuf[BUFSIZE]; | |
962 | struct Capability *cap; | |
963 | char *t; | |
964 | int tl; | |
965 | ||
966 | t = msgbuf; | |
967 | tl = ircsprintf(msgbuf, "TS "); | |
968 | t += tl; | |
969 | ||
970 | if(!IsServer(target_p) || !target_p->serv->caps) /* short circuit if no caps */ | |
971 | { | |
972 | msgbuf[2] = '\0'; | |
973 | return msgbuf; | |
974 | } | |
975 | ||
976 | for (cap = captab; cap->cap; ++cap) | |
977 | { | |
978 | if(cap->cap & target_p->serv->caps) | |
979 | { | |
980 | tl = ircsprintf(t, "%s ", cap->name); | |
981 | t += tl; | |
982 | } | |
983 | } | |
984 | ||
985 | t--; | |
986 | *t = '\0'; | |
987 | ||
988 | return msgbuf; | |
989 | } | |
990 | ||
991 | /* | |
992 | * server_estab | |
993 | * | |
994 | * inputs - pointer to a struct Client | |
995 | * output - | |
996 | * side effects - | |
997 | */ | |
998 | int | |
999 | server_estab(struct Client *client_p) | |
1000 | { | |
1001 | struct Client *target_p; | |
1002 | struct server_conf *server_p; | |
1003 | hook_data_client hdata; | |
1004 | char *host; | |
1005 | dlink_node *ptr; | |
1006 | ||
1007 | s_assert(NULL != client_p); | |
1008 | if(client_p == NULL) | |
1009 | return -1; | |
1010 | ClearAccess(client_p); | |
1011 | ||
1012 | host = client_p->name; | |
1013 | ||
1014 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
1015 | { | |
1016 | /* This shouldn't happen, better tell the ops... -A1kmm */ | |
1017 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1018 | "Warning: Lost connect{} block for server %s!", host); | |
1019 | return exit_client(client_p, client_p, client_p, "Lost connect{} block!"); | |
1020 | } | |
1021 | ||
1022 | /* We shouldn't have to check this, it should already done before | |
1023 | * server_estab is called. -A1kmm | |
1024 | */ | |
1025 | if(client_p->localClient->passwd) | |
1026 | { | |
1027 | memset(client_p->localClient->passwd, 0, strlen(client_p->localClient->passwd)); | |
1028 | MyFree(client_p->localClient->passwd); | |
1029 | client_p->localClient->passwd = NULL; | |
1030 | } | |
1031 | ||
1032 | /* Its got identd , since its a server */ | |
1033 | SetGotId(client_p); | |
1034 | ||
1035 | /* If there is something in the serv_list, it might be this | |
1036 | * connecting server.. | |
1037 | */ | |
1038 | if(!ServerInfo.hub && serv_list.head) | |
1039 | { | |
1040 | if(client_p != serv_list.head->data || serv_list.head->next) | |
1041 | { | |
1042 | ServerStats->is_ref++; | |
1043 | sendto_one(client_p, "ERROR :I'm a leaf not a hub"); | |
1044 | return exit_client(client_p, client_p, client_p, "I'm a leaf"); | |
1045 | } | |
1046 | } | |
1047 | ||
1048 | if(IsUnknown(client_p)) | |
1049 | { | |
1050 | /* | |
1051 | * jdc -- 1. Use EmptyString(), not [0] index reference. | |
1052 | * 2. Check ->spasswd, not ->passwd. | |
1053 | */ | |
1054 | if(!EmptyString(server_p->spasswd)) | |
1055 | { | |
1056 | /* kludge, if we're not using TS6, dont ever send | |
1057 | * ourselves as being TS6 capable. | |
1058 | */ | |
1059 | if(ServerInfo.use_ts6) | |
1060 | sendto_one(client_p, "PASS %s TS %d :%s", | |
1061 | server_p->spasswd, TS_CURRENT, me.id); | |
1062 | else | |
1063 | sendto_one(client_p, "PASS %s :TS", | |
1064 | server_p->spasswd); | |
1065 | } | |
1066 | ||
1067 | /* pass info to new server */ | |
1068 | send_capabilities(client_p, default_server_capabs | |
1069 | | (ServerConfCompressed(server_p) ? CAP_ZIP_SUPPORTED : 0) | |
1070 | | (ServerConfTb(server_p) ? CAP_TB : 0)); | |
1071 | ||
1072 | sendto_one(client_p, "SERVER %s 1 :%s%s", | |
1073 | me.name, | |
1074 | ConfigServerHide.hidden ? "(H) " : "", | |
1075 | (me.info[0]) ? (me.info) : "IRCers United"); | |
1076 | } | |
1077 | ||
1078 | if(!comm_set_buffers(client_p->localClient->fd, READBUF_SIZE)) | |
1079 | report_error(SETBUF_ERROR_MSG, | |
1080 | get_server_name(client_p, SHOW_IP), | |
1081 | log_client_name(client_p, SHOW_IP), errno); | |
1082 | ||
1083 | /* Hand the server off to servlink now */ | |
1084 | if(IsCapable(client_p, CAP_ZIP)) | |
1085 | { | |
1086 | if(fork_server(client_p) < 0) | |
1087 | { | |
1088 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1089 | "Warning: fork failed for server %s -- check servlink_path (%s)", | |
1090 | get_server_name(client_p, HIDE_IP), | |
1091 | ConfigFileEntry.servlink_path); | |
1092 | return exit_client(client_p, client_p, client_p, "Fork failed"); | |
1093 | } | |
1094 | start_io(client_p); | |
1095 | SetServlink(client_p); | |
1096 | } | |
1097 | ||
1098 | sendto_one(client_p, "SVINFO %d %d 0 :%ld", TS_CURRENT, TS_MIN, CurrentTime); | |
1099 | ||
1100 | client_p->servptr = &me; | |
1101 | ||
1102 | if(IsAnyDead(client_p)) | |
1103 | return CLIENT_EXITED; | |
1104 | ||
1105 | SetServer(client_p); | |
1106 | ||
1107 | /* Update the capability combination usage counts */ | |
1108 | set_chcap_usage_counts(client_p); | |
1109 | ||
1110 | dlinkAdd(client_p, &client_p->lnode, &me.serv->servers); | |
1111 | dlinkMoveNode(&client_p->localClient->tnode, &unknown_list, &serv_list); | |
1112 | dlinkAddTailAlloc(client_p, &global_serv_list); | |
1113 | ||
1114 | if(has_id(client_p)) | |
1115 | add_to_id_hash(client_p->id, client_p); | |
1116 | ||
1117 | add_to_client_hash(client_p->name, client_p); | |
1118 | /* doesnt duplicate client_p->serv if allocated this struct already */ | |
1119 | make_server(client_p); | |
1120 | client_p->serv->up = me.name; | |
1121 | client_p->serv->upid = me.id; | |
1122 | ||
1123 | client_p->serv->caps = client_p->localClient->caps; | |
1124 | ||
1125 | if(client_p->localClient->fullcaps) | |
1126 | { | |
1127 | DupString(client_p->serv->fullcaps, client_p->localClient->fullcaps); | |
1128 | MyFree(client_p->localClient->fullcaps); | |
1129 | client_p->localClient->fullcaps = NULL; | |
1130 | } | |
1131 | ||
1132 | /* add it to scache */ | |
1133 | find_or_add(client_p->name); | |
1134 | client_p->localClient->firsttime = CurrentTime; | |
1135 | /* fixing eob timings.. -gnp */ | |
1136 | ||
1137 | /* Show the real host/IP to admins */ | |
1138 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1139 | "Link with %s established: (%s) link", | |
1140 | get_server_name(client_p, SHOW_IP), | |
1141 | show_capabilities(client_p)); | |
1142 | ||
1143 | ilog(L_SERVER, "Link with %s established: (%s) link", | |
1144 | log_client_name(client_p, SHOW_IP), show_capabilities(client_p)); | |
1145 | ||
1146 | hdata.client = &me; | |
1147 | hdata.target = client_p; | |
1148 | call_hook(h_server_introduced, &hdata); | |
1149 | ||
1150 | if(HasServlink(client_p)) | |
1151 | { | |
1152 | /* we won't overflow FD_DESC_SZ here, as it can hold | |
1153 | * client_p->name + 64 | |
1154 | */ | |
1155 | comm_note(client_p->localClient->fd, "slink data: %s", client_p->name); | |
1156 | comm_note(client_p->localClient->ctrlfd, "slink ctrl: %s", client_p->name); | |
1157 | } | |
1158 | else | |
1159 | comm_note(client_p->localClient->fd, "Server: %s", client_p->name); | |
1160 | ||
1161 | /* | |
1162 | ** Old sendto_serv_but_one() call removed because we now | |
1163 | ** need to send different names to different servers | |
1164 | ** (domain name matching) Send new server to other servers. | |
1165 | */ | |
1166 | DLINK_FOREACH(ptr, serv_list.head) | |
1167 | { | |
1168 | target_p = ptr->data; | |
1169 | ||
1170 | if(target_p == client_p) | |
1171 | continue; | |
1172 | ||
1173 | if(has_id(target_p) && has_id(client_p)) | |
1174 | { | |
1175 | sendto_one(target_p, ":%s SID %s 2 %s :%s%s", | |
1176 | me.id, client_p->name, client_p->id, | |
1177 | IsHidden(client_p) ? "(H) " : "", client_p->info); | |
1178 | ||
1179 | if(IsCapable(target_p, CAP_ENCAP) && | |
1180 | !EmptyString(client_p->serv->fullcaps)) | |
1181 | sendto_one(target_p, ":%s ENCAP * GCAP :%s", | |
1182 | client_p->id, client_p->serv->fullcaps); | |
1183 | } | |
1184 | else | |
1185 | { | |
1186 | sendto_one(target_p, ":%s SERVER %s 2 :%s%s", | |
1187 | me.name, client_p->name, | |
1188 | IsHidden(client_p) ? "(H) " : "", client_p->info); | |
1189 | ||
1190 | if(IsCapable(target_p, CAP_ENCAP) && | |
1191 | !EmptyString(client_p->serv->fullcaps)) | |
1192 | sendto_one(target_p, ":%s ENCAP * GCAP :%s", | |
1193 | client_p->name, client_p->serv->fullcaps); | |
1194 | } | |
1195 | } | |
1196 | ||
1197 | /* | |
1198 | ** Pass on my client information to the new server | |
1199 | ** | |
1200 | ** First, pass only servers (idea is that if the link gets | |
1201 | ** cancelled beacause the server was already there, | |
1202 | ** there are no NICK's to be cancelled...). Of course, | |
1203 | ** if cancellation occurs, all this info is sent anyway, | |
1204 | ** and I guess the link dies when a read is attempted...? --msa | |
1205 | ** | |
1206 | ** Note: Link cancellation to occur at this point means | |
1207 | ** that at least two servers from my fragment are building | |
1208 | ** up connection this other fragment at the same time, it's | |
1209 | ** a race condition, not the normal way of operation... | |
1210 | ** | |
1211 | ** ALSO NOTE: using the get_client_name for server names-- | |
1212 | ** see previous *WARNING*!!! (Also, original inpath | |
1213 | ** is destroyed...) | |
1214 | */ | |
1215 | DLINK_FOREACH(ptr, global_serv_list.head) | |
1216 | { | |
1217 | target_p = ptr->data; | |
1218 | ||
1219 | /* target_p->from == target_p for target_p == client_p */ | |
1220 | if(IsMe(target_p) || target_p->from == client_p) | |
1221 | continue; | |
1222 | ||
1223 | /* presumption, if target has an id, so does its uplink */ | |
1224 | if(has_id(client_p) && has_id(target_p)) | |
1225 | sendto_one(client_p, ":%s SID %s %d %s :%s%s", | |
1226 | target_p->serv->upid, target_p->name, | |
1227 | target_p->hopcount + 1, target_p->id, | |
1228 | IsHidden(target_p) ? "(H) " : "", target_p->info); | |
1229 | else | |
1230 | sendto_one(client_p, ":%s SERVER %s %d :%s%s", | |
1231 | target_p->serv->up, | |
1232 | target_p->name, target_p->hopcount + 1, | |
1233 | IsHidden(target_p) ? "(H) " : "", target_p->info); | |
1234 | ||
1235 | if(IsCapable(client_p, CAP_ENCAP) && | |
1236 | !EmptyString(target_p->serv->fullcaps)) | |
1237 | sendto_one(client_p, ":%s ENCAP * GCAP :%s", | |
1238 | get_id(target_p, client_p), | |
1239 | target_p->serv->fullcaps); | |
1240 | } | |
1241 | ||
1242 | if(has_id(client_p)) | |
1243 | burst_TS6(client_p); | |
1244 | else | |
1245 | burst_TS5(client_p); | |
1246 | ||
1247 | /* Always send a PING after connect burst is done */ | |
1248 | sendto_one(client_p, "PING :%s", get_id(&me, client_p)); | |
1249 | ||
1250 | free_pre_client(client_p); | |
1251 | ||
1252 | return 0; | |
1253 | } | |
1254 | ||
1255 | static void | |
1256 | start_io(struct Client *server) | |
1257 | { | |
1258 | unsigned char *iobuf; | |
1259 | int c = 0; | |
1260 | int linecount = 0; | |
1261 | int linelen; | |
1262 | ||
1263 | iobuf = MyMalloc(256); /* XXX: This seems arbitrary. Perhaps make it IRCD_BUFSIZE? --nenolod */ | |
1264 | ||
1265 | if(IsCapable(server, CAP_ZIP)) | |
1266 | { | |
1267 | /* ziplink */ | |
1268 | iobuf[c++] = SLINKCMD_SET_ZIP_OUT_LEVEL; | |
1269 | iobuf[c++] = 0; /* | */ | |
1270 | iobuf[c++] = 1; /* \ len is 1 */ | |
1271 | iobuf[c++] = ConfigFileEntry.compression_level; | |
1272 | iobuf[c++] = SLINKCMD_START_ZIP_IN; | |
1273 | iobuf[c++] = SLINKCMD_START_ZIP_OUT; | |
1274 | } | |
1275 | ||
1276 | while (MyConnect(server)) | |
1277 | { | |
1278 | linecount++; | |
1279 | ||
1280 | iobuf = MyRealloc(iobuf, (c + READBUF_SIZE + 64)); | |
1281 | ||
1282 | /* store data in c+3 to allow for SLINKCMD_INJECT_RECVQ and len u16 */ | |
1283 | linelen = linebuf_get(&server->localClient->buf_recvq, (char *) (iobuf + c + 3), READBUF_SIZE, LINEBUF_PARTIAL, LINEBUF_RAW); /* include partial lines */ | |
1284 | ||
1285 | if(linelen) | |
1286 | { | |
1287 | iobuf[c++] = SLINKCMD_INJECT_RECVQ; | |
1288 | iobuf[c++] = (linelen >> 8); | |
1289 | iobuf[c++] = (linelen & 0xff); | |
1290 | c += linelen; | |
1291 | } | |
1292 | else | |
1293 | break; | |
1294 | } | |
1295 | ||
1296 | while (MyConnect(server)) | |
1297 | { | |
1298 | linecount++; | |
1299 | ||
1300 | iobuf = MyRealloc(iobuf, (c + BUF_DATA_SIZE + 64)); | |
1301 | ||
1302 | /* store data in c+3 to allow for SLINKCMD_INJECT_RECVQ and len u16 */ | |
1303 | linelen = linebuf_get(&server->localClient->buf_sendq, | |
1304 | (char *) (iobuf + c + 3), READBUF_SIZE, | |
1305 | LINEBUF_PARTIAL, LINEBUF_PARSED); /* include partial lines */ | |
1306 | ||
1307 | if(linelen) | |
1308 | { | |
1309 | iobuf[c++] = SLINKCMD_INJECT_SENDQ; | |
1310 | iobuf[c++] = (linelen >> 8); | |
1311 | iobuf[c++] = (linelen & 0xff); | |
1312 | c += linelen; | |
1313 | } | |
1314 | else | |
1315 | break; | |
1316 | } | |
1317 | ||
1318 | /* start io */ | |
1319 | iobuf[c++] = SLINKCMD_INIT; | |
1320 | ||
1321 | server->localClient->slinkq = iobuf; | |
1322 | server->localClient->slinkq_ofs = 0; | |
1323 | server->localClient->slinkq_len = c; | |
1324 | ||
1325 | /* schedule a write */ | |
1326 | send_queued_slink_write(server->localClient->ctrlfd, server); | |
1327 | } | |
1328 | ||
1329 | /* | |
1330 | * fork_server | |
1331 | * | |
1332 | * inputs - struct Client *server | |
1333 | * output - success: 0 / failure: -1 | |
1334 | * side effect - fork, and exec SERVLINK to handle this connection | |
1335 | */ | |
1336 | static int | |
1337 | fork_server(struct Client *server) | |
1338 | { | |
1339 | int ret; | |
1340 | int i; | |
1341 | int ctrl_fds[2]; | |
1342 | int data_fds[2]; | |
1343 | ||
1344 | char fd_str[4][6]; | |
1345 | char *kid_argv[7]; | |
1346 | char slink[] = "-slink"; | |
1347 | ||
1348 | ||
1349 | /* ctrl */ | |
1350 | #ifdef HAVE_SOCKETPAIR | |
1351 | if(socketpair(AF_UNIX, SOCK_STREAM, 0, ctrl_fds) < 0) | |
1352 | #else | |
1353 | if(inet_socketpair(AF_INET,SOCK_STREAM, 0, ctrl_fds) < 0) | |
1354 | #endif | |
1355 | goto fork_error; | |
1356 | ||
1357 | ||
1358 | ||
1359 | /* data */ | |
1360 | #ifdef HAVE_SOCKETPAIR | |
1361 | if(socketpair(AF_UNIX, SOCK_STREAM, 0, data_fds) < 0) | |
1362 | #else | |
1363 | if(inet_socketpair(AF_INET,SOCK_STREAM, 0, data_fds) < 0) | |
1364 | #endif | |
1365 | goto fork_error; | |
1366 | ||
1367 | ||
1368 | #ifdef __CYGWIN__ | |
1369 | if((ret = vfork()) < 0) | |
1370 | #else | |
1371 | if((ret = fork()) < 0) | |
1372 | #endif | |
1373 | goto fork_error; | |
1374 | else if(ret == 0) | |
1375 | { | |
1376 | /* set our fds as non blocking and close everything else */ | |
1377 | for (i = 0; i < HARD_FDLIMIT; i++) | |
1378 | { | |
1379 | ||
1380 | ||
1381 | if((i == ctrl_fds[1]) || (i == data_fds[1]) || (i == server->localClient->fd)) | |
1382 | { | |
1383 | comm_set_nb(i); | |
1384 | } | |
1385 | else | |
1386 | { | |
1387 | #ifdef __CYGWIN__ | |
1388 | if(i > 2) /* don't close std* */ | |
1389 | #endif | |
1390 | close(i); | |
1391 | } | |
1392 | } | |
1393 | ||
1394 | ircsnprintf(fd_str[0], sizeof(fd_str[0]), "%d", ctrl_fds[1]); | |
1395 | ircsnprintf(fd_str[1], sizeof(fd_str[1]), "%d", data_fds[1]); | |
1396 | ircsnprintf(fd_str[2], sizeof(fd_str[2]), "%d", server->localClient->fd); | |
1397 | kid_argv[0] = slink; | |
1398 | kid_argv[1] = fd_str[0]; | |
1399 | kid_argv[2] = fd_str[1]; | |
1400 | kid_argv[3] = fd_str[2]; | |
1401 | kid_argv[4] = NULL; | |
1402 | ||
1403 | /* exec servlink program */ | |
1404 | execv(ConfigFileEntry.servlink_path, kid_argv); | |
1405 | ||
1406 | /* We're still here, abort. */ | |
1407 | _exit(1); | |
1408 | } | |
1409 | else | |
1410 | { | |
1411 | comm_close(server->localClient->fd); | |
1412 | ||
1413 | /* close the childs end of the pipes */ | |
1414 | close(ctrl_fds[1]); | |
1415 | close(data_fds[1]); | |
1416 | ||
1417 | s_assert(server->localClient); | |
1418 | server->localClient->ctrlfd = ctrl_fds[0]; | |
1419 | server->localClient->fd = data_fds[0]; | |
1420 | ||
1421 | if(!comm_set_nb(server->localClient->fd)) | |
1422 | { | |
1423 | report_error(NONB_ERROR_MSG, | |
1424 | get_server_name(server, SHOW_IP), | |
1425 | log_client_name(server, SHOW_IP), | |
1426 | errno); | |
1427 | } | |
1428 | ||
1429 | if(!comm_set_nb(server->localClient->ctrlfd)) | |
1430 | { | |
1431 | report_error(NONB_ERROR_MSG, | |
1432 | get_server_name(server, SHOW_IP), | |
1433 | log_client_name(server, SHOW_IP), | |
1434 | errno); | |
1435 | } | |
1436 | ||
1437 | comm_open(server->localClient->ctrlfd, FD_SOCKET, NULL); | |
1438 | comm_open(server->localClient->fd, FD_SOCKET, NULL); | |
1439 | ||
1440 | read_ctrl_packet(server->localClient->ctrlfd, server); | |
1441 | read_packet(server->localClient->fd, server); | |
1442 | } | |
1443 | ||
1444 | return 0; | |
1445 | ||
1446 | fork_error: | |
1447 | /* this is ugly, but nicer than repeating | |
1448 | * about 50 close() statements everywhre... */ | |
1449 | close(data_fds[0]); | |
1450 | close(data_fds[1]); | |
1451 | close(ctrl_fds[0]); | |
1452 | close(ctrl_fds[1]); | |
1453 | return -1; | |
1454 | } | |
1455 | ||
1456 | /* | |
1457 | * New server connection code | |
1458 | * Based upon the stuff floating about in s_bsd.c | |
1459 | * -- adrian | |
1460 | */ | |
1461 | ||
1462 | /* | |
1463 | * serv_connect() - initiate a server connection | |
1464 | * | |
1465 | * inputs - pointer to conf | |
1466 | * - pointer to client doing the connet | |
1467 | * output - | |
1468 | * side effects - | |
1469 | * | |
1470 | * This code initiates a connection to a server. It first checks to make | |
1471 | * sure the given server exists. If this is the case, it creates a socket, | |
1472 | * creates a client, saves the socket information in the client, and | |
1473 | * initiates a connection to the server through comm_connect_tcp(). The | |
1474 | * completion of this goes through serv_completed_connection(). | |
1475 | * | |
1476 | * We return 1 if the connection is attempted, since we don't know whether | |
1477 | * it suceeded or not, and 0 if it fails in here somewhere. | |
1478 | */ | |
1479 | int | |
1480 | serv_connect(struct server_conf *server_p, struct Client *by) | |
1481 | { | |
1482 | struct Client *client_p; | |
1483 | struct irc_sockaddr_storage myipnum; | |
1484 | int fd; | |
1485 | ||
1486 | s_assert(server_p != NULL); | |
1487 | if(server_p == NULL) | |
1488 | return 0; | |
1489 | ||
1490 | /* | |
1491 | * Make sure this server isn't already connected | |
1492 | */ | |
1493 | if((client_p = find_server(NULL, server_p->name))) | |
1494 | { | |
1495 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1496 | "Server %s already present from %s", | |
1497 | server_p->name, get_server_name(client_p, SHOW_IP)); | |
1498 | if(by && IsPerson(by) && !MyClient(by)) | |
1499 | sendto_one_notice(by, ":Server %s already present from %s", | |
1500 | server_p->name, get_server_name(client_p, SHOW_IP)); | |
1501 | return 0; | |
1502 | } | |
1503 | ||
1504 | /* create a socket for the server connection */ | |
1505 | if((fd = comm_socket(server_p->aftype, SOCK_STREAM, 0, NULL)) < 0) | |
1506 | { | |
1507 | /* Eek, failure to create the socket */ | |
1508 | report_error("opening stream socket to %s: %s", | |
1509 | server_p->name, server_p->name, errno); | |
1510 | return 0; | |
1511 | } | |
1512 | ||
1513 | /* servernames are always guaranteed under HOSTLEN chars */ | |
1514 | comm_note(fd, "Server: %s", server_p->name); | |
1515 | ||
1516 | /* Create a local client */ | |
1517 | client_p = make_client(NULL); | |
1518 | ||
1519 | /* Copy in the server, hostname, fd | |
1520 | * The sockhost may be a hostname, this will be corrected later | |
1521 | * -- jilles | |
1522 | */ | |
1523 | strlcpy(client_p->name, server_p->name, sizeof(client_p->name)); | |
1524 | strlcpy(client_p->host, server_p->host, sizeof(client_p->host)); | |
1525 | strlcpy(client_p->sockhost, server_p->host, sizeof(client_p->sockhost)); | |
1526 | client_p->localClient->fd = fd; | |
1527 | ||
1528 | /* | |
1529 | * Set up the initial server evilness, ripped straight from | |
1530 | * connect_server(), so don't blame me for it being evil. | |
1531 | * -- adrian | |
1532 | */ | |
1533 | ||
1534 | if(!comm_set_buffers(client_p->localClient->fd, READBUF_SIZE)) | |
1535 | { | |
1536 | report_error(SETBUF_ERROR_MSG, | |
1537 | get_server_name(client_p, SHOW_IP), | |
1538 | log_client_name(client_p, SHOW_IP), | |
1539 | errno); | |
1540 | } | |
1541 | ||
1542 | /* | |
1543 | * Attach config entries to client here rather than in | |
1544 | * serv_connect_callback(). This to avoid null pointer references. | |
1545 | */ | |
1546 | attach_server_conf(client_p, server_p); | |
1547 | ||
1548 | /* | |
1549 | * at this point we have a connection in progress and C/N lines | |
1550 | * attached to the client, the socket info should be saved in the | |
1551 | * client and it should either be resolved or have a valid address. | |
1552 | * | |
1553 | * The socket has been connected or connect is in progress. | |
1554 | */ | |
1555 | make_server(client_p); | |
1556 | if(by && IsPerson(by)) | |
1557 | { | |
1558 | strcpy(client_p->serv->by, by->name); | |
1559 | if(client_p->serv->user) | |
1560 | free_user(client_p->serv->user, NULL); | |
1561 | client_p->serv->user = by->user; | |
1562 | by->user->refcnt++; | |
1563 | } | |
1564 | else | |
1565 | { | |
1566 | strcpy(client_p->serv->by, "AutoConn."); | |
1567 | if(client_p->serv->user) | |
1568 | free_user(client_p->serv->user, NULL); | |
1569 | client_p->serv->user = NULL; | |
1570 | } | |
1571 | client_p->serv->up = me.name; | |
1572 | client_p->serv->upid = me.id; | |
1573 | SetConnecting(client_p); | |
1574 | dlinkAddTail(client_p, &client_p->node, &global_client_list); | |
1575 | ||
1576 | /* log */ | |
1577 | ilog(L_SERVER, "Connecting to %s[%s] port %d (%s)", server_p->name, server_p->host, server_p->port, | |
1578 | #ifdef IPV6 | |
1579 | server_p->aftype == AF_INET6 ? "IPv6" : | |
1580 | #endif | |
1581 | (server_p->aftype == AF_INET ? "IPv4" : "?")); | |
1582 | ||
1583 | if(ServerConfVhosted(server_p)) | |
1584 | { | |
1585 | memcpy(&myipnum, &server_p->my_ipnum, sizeof(myipnum)); | |
1586 | ((struct sockaddr_in *)&myipnum)->sin_port = 0; | |
1587 | myipnum.ss_family = server_p->aftype; | |
1588 | ||
1589 | } | |
1590 | else if(server_p->aftype == AF_INET && ServerInfo.specific_ipv4_vhost) | |
1591 | { | |
1592 | memcpy(&myipnum, &ServerInfo.ip, sizeof(myipnum)); | |
1593 | ((struct sockaddr_in *)&myipnum)->sin_port = 0; | |
1594 | myipnum.ss_family = AF_INET; | |
1595 | SET_SS_LEN(myipnum, sizeof(struct sockaddr_in)); | |
1596 | } | |
1597 | ||
1598 | #ifdef IPV6 | |
1599 | else if((server_p->aftype == AF_INET6) && ServerInfo.specific_ipv6_vhost) | |
1600 | { | |
1601 | memcpy(&myipnum, &ServerInfo.ip6, sizeof(myipnum)); | |
1602 | ((struct sockaddr_in6 *)&myipnum)->sin6_port = 0; | |
1603 | myipnum.ss_family = AF_INET6; | |
1604 | SET_SS_LEN(myipnum, sizeof(struct sockaddr_in6)); | |
1605 | } | |
1606 | #endif | |
1607 | else | |
1608 | { | |
1609 | comm_connect_tcp(client_p->localClient->fd, server_p->host, | |
1610 | server_p->port, NULL, 0, serv_connect_callback, | |
1611 | client_p, server_p->aftype, | |
1612 | ConfigFileEntry.connect_timeout); | |
1613 | return 1; | |
1614 | } | |
1615 | ||
1616 | comm_connect_tcp(client_p->localClient->fd, server_p->host, | |
1617 | server_p->port, (struct sockaddr *) &myipnum, | |
1618 | GET_SS_LEN(myipnum), serv_connect_callback, client_p, | |
1619 | myipnum.ss_family, ConfigFileEntry.connect_timeout); | |
1620 | ||
1621 | return 1; | |
1622 | } | |
1623 | ||
1624 | /* | |
1625 | * serv_connect_callback() - complete a server connection. | |
1626 | * | |
1627 | * This routine is called after the server connection attempt has | |
1628 | * completed. If unsucessful, an error is sent to ops and the client | |
1629 | * is closed. If sucessful, it goes through the initialisation/check | |
1630 | * procedures, the capabilities are sent, and the socket is then | |
1631 | * marked for reading. | |
1632 | */ | |
1633 | static void | |
1634 | serv_connect_callback(int fd, int status, void *data) | |
1635 | { | |
1636 | struct Client *client_p = data; | |
1637 | struct server_conf *server_p; | |
1638 | char *errstr; | |
1639 | ||
1640 | /* First, make sure its a real client! */ | |
1641 | s_assert(client_p != NULL); | |
1642 | s_assert(client_p->localClient->fd == fd); | |
1643 | ||
1644 | if(client_p == NULL) | |
1645 | return; | |
1646 | ||
1647 | /* while we were waiting for the callback, its possible this already | |
1648 | * linked in.. --fl | |
1649 | */ | |
1650 | if(find_server(NULL, client_p->name) != NULL) | |
1651 | { | |
1652 | exit_client(client_p, client_p, &me, "Server Exists"); | |
1653 | return; | |
1654 | } | |
1655 | ||
1656 | /* Next, for backward purposes, record the ip of the server */ | |
1657 | memcpy(&client_p->localClient->ip, &fd_table[fd].connect.hostaddr, sizeof client_p->localClient->ip); | |
1658 | /* Set sockhost properly now -- jilles */ | |
1659 | inetntop_sock((struct sockaddr *)&fd_table[fd].connect.hostaddr, | |
1660 | client_p->sockhost, sizeof client_p->sockhost); | |
1661 | ||
1662 | /* Check the status */ | |
1663 | if(status != COMM_OK) | |
1664 | { | |
1665 | /* COMM_ERR_TIMEOUT wont have an errno associated with it, | |
1666 | * the others will.. --fl | |
1667 | */ | |
1668 | if(status == COMM_ERR_TIMEOUT) | |
1669 | { | |
1670 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1671 | "Error connecting to %s[%s]: %s", | |
1672 | client_p->name, | |
1673 | #ifdef HIDE_SERVERS_IPS | |
1674 | "255.255.255.255", | |
1675 | #else | |
1676 | client_p->host, | |
1677 | #endif | |
1678 | comm_errstr(status)); | |
1679 | ilog(L_SERVER, "Error connecting to %s[%s]: %s", | |
1680 | client_p->name, client_p->sockhost, | |
1681 | comm_errstr(status)); | |
1682 | } | |
1683 | else | |
1684 | { | |
1685 | errstr = strerror(comm_get_sockerr(fd)); | |
1686 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1687 | "Error connecting to %s[%s]: %s (%s)", | |
1688 | client_p->name, | |
1689 | #ifdef HIDE_SERVERS_IPS | |
1690 | "255.255.255.255", | |
1691 | #else | |
1692 | client_p->host, | |
1693 | #endif | |
1694 | comm_errstr(status), errstr); | |
1695 | ilog(L_SERVER, "Error connecting to %s[%s]: %s (%s)", | |
1696 | client_p->name, client_p->sockhost, | |
1697 | comm_errstr(status), errstr); | |
1698 | } | |
1699 | ||
1700 | exit_client(client_p, client_p, &me, comm_errstr(status)); | |
1701 | return; | |
1702 | } | |
1703 | ||
1704 | /* COMM_OK, so continue the connection procedure */ | |
1705 | /* Get the C/N lines */ | |
1706 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
1707 | { | |
1708 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, "Lost connect{} block for %s", | |
1709 | get_server_name(client_p, HIDE_IP)); | |
1710 | exit_client(client_p, client_p, &me, "Lost connect{} block"); | |
1711 | return; | |
1712 | } | |
1713 | ||
1714 | /* Next, send the initial handshake */ | |
1715 | SetHandshake(client_p); | |
1716 | ||
1717 | /* kludge, if we're not using TS6, dont ever send | |
1718 | * ourselves as being TS6 capable. | |
1719 | */ | |
1720 | if(!EmptyString(server_p->spasswd)) | |
1721 | { | |
1722 | if(ServerInfo.use_ts6) | |
1723 | sendto_one(client_p, "PASS %s TS %d :%s", | |
1724 | server_p->spasswd, TS_CURRENT, me.id); | |
1725 | else | |
1726 | sendto_one(client_p, "PASS %s :TS", | |
1727 | server_p->spasswd); | |
1728 | } | |
1729 | ||
1730 | /* pass my info to the new server */ | |
1731 | send_capabilities(client_p, default_server_capabs | |
1732 | | (ServerConfCompressed(server_p) ? CAP_ZIP_SUPPORTED : 0) | |
1733 | | (ServerConfTb(server_p) ? CAP_TB : 0)); | |
1734 | ||
1735 | sendto_one(client_p, "SERVER %s 1 :%s%s", | |
1736 | me.name, | |
1737 | ConfigServerHide.hidden ? "(H) " : "", me.info); | |
1738 | ||
1739 | /* | |
1740 | * If we've been marked dead because a send failed, just exit | |
1741 | * here now and save everyone the trouble of us ever existing. | |
1742 | */ | |
1743 | if(IsAnyDead(client_p)) | |
1744 | { | |
1745 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1746 | "%s went dead during handshake", client_p->name); | |
1747 | exit_client(client_p, client_p, &me, "Went dead during handshake"); | |
1748 | return; | |
1749 | } | |
1750 | ||
1751 | /* don't move to serv_list yet -- we haven't sent a burst! */ | |
1752 | ||
1753 | /* If we get here, we're ok, so lets start reading some data */ | |
1754 | read_packet(fd, client_p); | |
1755 | } | |
1756 | ||
1757 | #ifndef HAVE_SOCKETPAIR | |
1758 | static int | |
1759 | inet_socketpair(int d, int type, int protocol, int sv[2]) | |
1760 | { | |
1761 | struct sockaddr_in addr1, addr2, addr3; | |
1762 | int addr3_len = sizeof(addr3); | |
1763 | int fd, rc; | |
1764 | int port_no = 20000; | |
1765 | ||
1766 | if(d != AF_INET || type != SOCK_STREAM || protocol) | |
1767 | { | |
1768 | errno = EAFNOSUPPORT; | |
1769 | return -1; | |
1770 | } | |
1771 | if(((sv[0] = socket(AF_INET, SOCK_STREAM, 0)) < 0) || ((sv[1] = socket(AF_INET, SOCK_STREAM, 0)) < 0)) | |
1772 | return -1; | |
1773 | ||
1774 | addr1.sin_port = htons(port_no); | |
1775 | addr1.sin_family = AF_INET; | |
1776 | addr1.sin_addr.s_addr = htonl(INADDR_LOOPBACK); | |
1777 | while ((rc = bind (sv[0], (struct sockaddr *) &addr1, sizeof (addr1))) < 0 && errno == EADDRINUSE) | |
1778 | addr1.sin_port = htons(++port_no); | |
1779 | ||
1780 | if(rc < 0) | |
1781 | return -1; | |
1782 | ||
1783 | if(listen(sv[0], 1) < 0) | |
1784 | { | |
1785 | close(sv[0]); | |
1786 | close(sv[1]); | |
1787 | return -1; | |
1788 | } | |
1789 | ||
1790 | addr2.sin_port = htons(port_no); | |
1791 | addr2.sin_family = AF_INET; | |
1792 | addr2.sin_addr.s_addr = htonl(INADDR_LOOPBACK); | |
1793 | if(connect (sv[1], (struct sockaddr *) &addr2, sizeof (addr2)) < 0) | |
1794 | { | |
1795 | close(sv[0]); | |
1796 | close(sv[1]); | |
1797 | return -1; | |
1798 | } | |
1799 | ||
1800 | if((fd = accept(sv[1], (struct sockaddr *) &addr3, &addr3_len)) < 0) | |
1801 | { | |
1802 | close(sv[0]); | |
1803 | close(sv[1]); | |
1804 | return -1; | |
1805 | } | |
1806 | close(sv[0]); | |
1807 | sv[0] = fd; | |
1808 | ||
1809 | return(0); | |
1810 | ||
1811 | } | |
1812 | #endif |