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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 3233 2007-03-05 17:28:27Z nenolod $ | |
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(parv[server], me.name) || (strcmp(parv[server], me.id) == 0)) | |
264 | return (HUNTED_ISME); | |
265 | ||
266 | new = LOCAL_COPY(parv[server]); | |
267 | ||
268 | /* | |
269 | * These are to pickup matches that would cause the following | |
270 | * message to go in the wrong direction while doing quick fast | |
271 | * non-matching lookups. | |
272 | */ | |
273 | if(MyClient(source_p)) | |
274 | target_p = find_named_client(new); | |
275 | else | |
276 | target_p = find_client(new); | |
277 | ||
278 | if(target_p) | |
279 | if(target_p->from == source_p->from && !MyConnect(target_p)) | |
280 | target_p = NULL; | |
281 | ||
282 | collapse(new); | |
283 | wilds = (strchr(new, '?') || strchr(new, '*')); | |
284 | ||
285 | /* | |
286 | * Again, if there are no wild cards involved in the server | |
287 | * name, use the hash lookup | |
288 | */ | |
289 | if(!target_p) | |
290 | { | |
291 | if(!wilds) | |
292 | { | |
293 | if(MyClient(source_p) || !IsDigit(parv[server][0])) | |
294 | sendto_one_numeric(source_p, ERR_NOSUCHSERVER, | |
295 | form_str(ERR_NOSUCHSERVER), | |
296 | parv[server]); | |
297 | return (HUNTED_NOSUCH); | |
298 | } | |
299 | else | |
300 | { | |
301 | target_p = NULL; | |
302 | ||
303 | DLINK_FOREACH(ptr, global_client_list.head) | |
304 | { | |
305 | if(match(new, ((struct Client *) (ptr->data))->name)) | |
306 | { | |
307 | target_p = ptr->data; | |
308 | break; | |
309 | } | |
310 | } | |
311 | } | |
312 | } | |
313 | ||
314 | if(target_p) | |
315 | { | |
316 | if(!IsRegistered(target_p)) | |
317 | { | |
318 | sendto_one_numeric(source_p, ERR_NOSUCHSERVER, | |
319 | form_str(ERR_NOSUCHSERVER), | |
320 | parv[server]); | |
321 | return HUNTED_NOSUCH; | |
322 | } | |
323 | ||
324 | if(IsMe(target_p) || MyClient(target_p)) | |
325 | return HUNTED_ISME; | |
326 | ||
327 | old = parv[server]; | |
328 | parv[server] = get_id(target_p, target_p); | |
329 | ||
330 | sendto_one(target_p, command, get_id(source_p, target_p), | |
331 | parv[1], parv[2], parv[3], parv[4], parv[5], parv[6], parv[7], parv[8]); | |
332 | parv[server] = old; | |
333 | return (HUNTED_PASS); | |
334 | } | |
335 | ||
336 | if(!IsDigit(parv[server][0])) | |
337 | sendto_one_numeric(source_p, ERR_NOSUCHSERVER, | |
338 | form_str(ERR_NOSUCHSERVER), parv[server]); | |
339 | return (HUNTED_NOSUCH); | |
340 | } | |
341 | ||
342 | /* | |
343 | * try_connections - scan through configuration and try new connections. | |
344 | * Returns the calendar time when the next call to this | |
345 | * function should be made latest. (No harm done if this | |
346 | * is called earlier or later...) | |
347 | */ | |
348 | void | |
349 | try_connections(void *unused) | |
350 | { | |
351 | struct Client *client_p; | |
352 | struct server_conf *server_p = NULL; | |
353 | struct server_conf *tmp_p; | |
354 | struct Class *cltmp; | |
355 | dlink_node *ptr; | |
356 | int connecting = FALSE; | |
357 | int confrq = 0; | |
358 | time_t next = 0; | |
359 | ||
360 | DLINK_FOREACH(ptr, server_conf_list.head) | |
361 | { | |
362 | tmp_p = ptr->data; | |
363 | ||
364 | if(ServerConfIllegal(tmp_p) || !ServerConfAutoconn(tmp_p)) | |
365 | continue; | |
366 | ||
367 | cltmp = tmp_p->class; | |
368 | ||
369 | /* | |
370 | * Skip this entry if the use of it is still on hold until | |
371 | * future. Otherwise handle this entry (and set it on hold | |
372 | * until next time). Will reset only hold times, if already | |
373 | * made one successfull connection... [this algorithm is | |
374 | * a bit fuzzy... -- msa >;) ] | |
375 | */ | |
376 | if(tmp_p->hold > CurrentTime) | |
377 | { | |
378 | if(next > tmp_p->hold || next == 0) | |
379 | next = tmp_p->hold; | |
380 | continue; | |
381 | } | |
382 | ||
383 | confrq = get_con_freq(cltmp); | |
384 | tmp_p->hold = CurrentTime + confrq; | |
385 | ||
386 | /* | |
387 | * Found a CONNECT config with port specified, scan clients | |
388 | * and see if this server is already connected? | |
389 | */ | |
390 | client_p = find_server(NULL, tmp_p->name); | |
391 | ||
392 | if(!client_p && (CurrUsers(cltmp) < MaxUsers(cltmp)) && !connecting) | |
393 | { | |
394 | server_p = tmp_p; | |
395 | ||
396 | /* We connect only one at time... */ | |
397 | connecting = TRUE; | |
398 | } | |
399 | ||
400 | if((next > tmp_p->hold) || (next == 0)) | |
401 | next = tmp_p->hold; | |
402 | } | |
403 | ||
404 | /* TODO: change this to set active flag to 0 when added to event! --Habeeb */ | |
405 | if(GlobalSetOptions.autoconn == 0) | |
406 | return; | |
407 | ||
408 | if(!connecting) | |
409 | return; | |
410 | ||
411 | /* move this connect entry to end.. */ | |
412 | dlinkDelete(&server_p->node, &server_conf_list); | |
413 | dlinkAddTail(server_p, &server_p->node, &server_conf_list); | |
414 | ||
415 | /* | |
416 | * We used to only print this if serv_connect() actually | |
417 | * suceeded, but since comm_tcp_connect() can call the callback | |
418 | * immediately if there is an error, we were getting error messages | |
419 | * in the wrong order. SO, we just print out the activated line, | |
420 | * and let serv_connect() / serv_connect_callback() print an | |
421 | * error afterwards if it fails. | |
422 | * -- adrian | |
423 | */ | |
424 | #ifndef HIDE_SERVERS_IPS | |
425 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
426 | "Connection to %s[%s] activated.", | |
427 | server_p->name, server_p->host); | |
428 | #else | |
429 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
430 | "Connection to %s activated", | |
431 | server_p->name); | |
432 | #endif | |
433 | ||
434 | serv_connect(server_p, 0); | |
435 | } | |
436 | ||
437 | int | |
438 | check_server(const char *name, struct Client *client_p) | |
439 | { | |
440 | struct server_conf *server_p = NULL; | |
441 | struct server_conf *tmp_p; | |
442 | dlink_node *ptr; | |
443 | int error = -1; | |
444 | ||
445 | s_assert(NULL != client_p); | |
446 | if(client_p == NULL) | |
447 | return error; | |
448 | ||
449 | if(!(client_p->localClient->passwd)) | |
450 | return -2; | |
451 | ||
452 | if(strlen(name) > HOSTLEN) | |
453 | return -4; | |
454 | ||
455 | DLINK_FOREACH(ptr, server_conf_list.head) | |
456 | { | |
457 | tmp_p = ptr->data; | |
458 | ||
459 | if(ServerConfIllegal(tmp_p)) | |
460 | continue; | |
461 | ||
462 | if(!match(tmp_p->name, name)) | |
463 | continue; | |
464 | ||
465 | error = -3; | |
466 | ||
467 | /* XXX: Fix me for IPv6 */ | |
468 | /* XXX sockhost is the IPv4 ip as a string */ | |
469 | if(match(tmp_p->host, client_p->host) || | |
470 | match(tmp_p->host, client_p->sockhost)) | |
471 | { | |
472 | error = -2; | |
473 | ||
474 | if(ServerConfEncrypted(tmp_p)) | |
475 | { | |
476 | if(!strcmp(tmp_p->passwd, crypt(client_p->localClient->passwd, | |
477 | tmp_p->passwd))) | |
478 | { | |
479 | server_p = tmp_p; | |
480 | break; | |
481 | } | |
482 | } | |
483 | else if(!strcmp(tmp_p->passwd, client_p->localClient->passwd)) | |
484 | { | |
485 | server_p = tmp_p; | |
486 | break; | |
487 | } | |
488 | } | |
489 | } | |
490 | ||
491 | if(server_p == NULL) | |
492 | return error; | |
493 | ||
494 | attach_server_conf(client_p, server_p); | |
495 | ||
496 | /* clear ZIP/TB if they support but we dont want them */ | |
497 | #ifdef HAVE_LIBZ | |
498 | if(!ServerConfCompressed(server_p)) | |
499 | #endif | |
500 | ClearCap(client_p, CAP_ZIP); | |
501 | ||
502 | if(!ServerConfTb(server_p)) | |
503 | ClearCap(client_p, CAP_TB); | |
504 | ||
505 | return 0; | |
506 | } | |
507 | ||
508 | /* | |
509 | * send_capabilities | |
510 | * | |
511 | * inputs - Client pointer to send to | |
512 | * - int flag of capabilities that this server has | |
513 | * output - NONE | |
514 | * side effects - send the CAPAB line to a server -orabidoo | |
515 | * | |
516 | */ | |
517 | void | |
518 | send_capabilities(struct Client *client_p, int cap_can_send) | |
519 | { | |
520 | struct Capability *cap; | |
521 | char msgbuf[BUFSIZE]; | |
522 | char *t; | |
523 | int tl; | |
524 | ||
525 | t = msgbuf; | |
526 | ||
527 | for (cap = captab; cap->name; ++cap) | |
528 | { | |
529 | if(cap->cap & cap_can_send) | |
530 | { | |
531 | tl = ircsprintf(t, "%s ", cap->name); | |
532 | t += tl; | |
533 | } | |
534 | } | |
535 | ||
536 | t--; | |
537 | *t = '\0'; | |
538 | ||
539 | sendto_one(client_p, "CAPAB :%s", msgbuf); | |
540 | } | |
541 | ||
542 | /* burst_modes_TS5() | |
543 | * | |
544 | * input - client to burst to, channel name, list to burst, mode flag | |
545 | * output - | |
546 | * side effects - client is sent a list of +b, or +e, or +I modes | |
547 | */ | |
548 | static void | |
549 | burst_modes_TS5(struct Client *client_p, char *chname, dlink_list *list, char flag) | |
550 | { | |
551 | dlink_node *ptr; | |
552 | struct Ban *banptr; | |
553 | char mbuf[MODEBUFLEN]; | |
554 | char pbuf[BUFSIZE]; | |
555 | int tlen; | |
556 | int mlen; | |
557 | int cur_len; | |
558 | char *mp; | |
559 | char *pp; | |
560 | int count = 0; | |
561 | ||
562 | mlen = ircsprintf(buf, ":%s MODE %s +", me.name, chname); | |
563 | cur_len = mlen; | |
564 | ||
565 | mp = mbuf; | |
566 | pp = pbuf; | |
567 | ||
568 | DLINK_FOREACH(ptr, list->head) | |
569 | { | |
570 | banptr = ptr->data; | |
571 | tlen = strlen(banptr->banstr) + 3; | |
572 | ||
573 | /* uh oh */ | |
574 | if(tlen > MODEBUFLEN) | |
575 | continue; | |
576 | ||
577 | if((count >= MAXMODEPARAMS) || ((cur_len + tlen + 2) > (BUFSIZE - 3))) | |
578 | { | |
579 | sendto_one(client_p, "%s%s %s", buf, mbuf, pbuf); | |
580 | ||
581 | mp = mbuf; | |
582 | pp = pbuf; | |
583 | cur_len = mlen; | |
584 | count = 0; | |
585 | } | |
586 | ||
587 | *mp++ = flag; | |
588 | *mp = '\0'; | |
589 | pp += ircsprintf(pp, "%s ", banptr->banstr); | |
590 | cur_len += tlen; | |
591 | count++; | |
592 | } | |
593 | ||
594 | if(count != 0) | |
595 | sendto_one(client_p, "%s%s %s", buf, mbuf, pbuf); | |
596 | } | |
597 | ||
598 | /* burst_modes_TS6() | |
599 | * | |
600 | * input - client to burst to, channel name, list to burst, mode flag | |
601 | * output - | |
602 | * side effects - client is sent a list of +b, +e, or +I modes | |
603 | */ | |
604 | static void | |
605 | burst_modes_TS6(struct Client *client_p, struct Channel *chptr, | |
606 | dlink_list *list, char flag) | |
607 | { | |
608 | dlink_node *ptr; | |
609 | struct Ban *banptr; | |
610 | char *t; | |
611 | int tlen; | |
612 | int mlen; | |
613 | int cur_len; | |
614 | ||
615 | cur_len = mlen = ircsprintf(buf, ":%s BMASK %ld %s %c :", | |
616 | me.id, (long) chptr->channelts, chptr->chname, flag); | |
617 | t = buf + mlen; | |
618 | ||
619 | DLINK_FOREACH(ptr, list->head) | |
620 | { | |
621 | banptr = ptr->data; | |
622 | ||
623 | tlen = strlen(banptr->banstr) + 1; | |
624 | ||
625 | /* uh oh */ | |
626 | if(cur_len + tlen > BUFSIZE - 3) | |
627 | { | |
628 | /* the one we're trying to send doesnt fit at all! */ | |
629 | if(cur_len == mlen) | |
630 | { | |
631 | s_assert(0); | |
632 | continue; | |
633 | } | |
634 | ||
635 | /* chop off trailing space and send.. */ | |
636 | *(t-1) = '\0'; | |
637 | sendto_one(client_p, "%s", buf); | |
638 | cur_len = mlen; | |
639 | t = buf + mlen; | |
640 | } | |
641 | ||
642 | ircsprintf(t, "%s ", banptr->banstr); | |
643 | t += tlen; | |
644 | cur_len += tlen; | |
645 | } | |
646 | ||
647 | /* cant ever exit the loop above without having modified buf, | |
648 | * chop off trailing space and send. | |
649 | */ | |
650 | *(t-1) = '\0'; | |
651 | sendto_one(client_p, "%s", buf); | |
652 | } | |
653 | ||
654 | /* | |
655 | * burst_TS5 | |
656 | * | |
657 | * inputs - client (server) to send nick towards | |
658 | * - client to send nick for | |
659 | * output - NONE | |
660 | * side effects - NICK message is sent towards given client_p | |
661 | */ | |
662 | static void | |
663 | burst_TS5(struct Client *client_p) | |
664 | { | |
665 | static char ubuf[12]; | |
666 | struct Client *target_p; | |
667 | struct Channel *chptr; | |
668 | struct membership *msptr; | |
669 | hook_data_client hclientinfo; | |
670 | hook_data_channel hchaninfo; | |
671 | dlink_node *ptr; | |
672 | dlink_node *uptr; | |
673 | char *t; | |
674 | int tlen, mlen; | |
675 | int cur_len = 0; | |
676 | ||
677 | hclientinfo.client = hchaninfo.client = client_p; | |
678 | ||
679 | DLINK_FOREACH(ptr, global_client_list.head) | |
680 | { | |
681 | target_p = ptr->data; | |
682 | ||
683 | if(!IsPerson(target_p)) | |
684 | continue; | |
685 | ||
686 | send_umode(NULL, target_p, 0, 0, ubuf); | |
687 | if(!*ubuf) | |
688 | { | |
689 | ubuf[0] = '+'; | |
690 | ubuf[1] = '\0'; | |
691 | } | |
692 | ||
693 | sendto_one(client_p, "NICK %s %d %ld %s %s %s %s :%s", | |
694 | target_p->name, target_p->hopcount + 1, | |
695 | (long) target_p->tsinfo, ubuf, | |
696 | target_p->username, target_p->host, | |
697 | target_p->user->server, target_p->info); | |
698 | ||
699 | if(IsDynSpoof(target_p)) | |
700 | sendto_one(client_p, ":%s ENCAP * REALHOST %s", | |
701 | target_p->name, target_p->orighost); | |
702 | if(!EmptyString(target_p->user->suser)) | |
703 | sendto_one(client_p, ":%s ENCAP * LOGIN %s", | |
704 | target_p->name, target_p->user->suser); | |
705 | ||
706 | if(ConfigFileEntry.burst_away && !EmptyString(target_p->user->away)) | |
707 | sendto_one(client_p, ":%s AWAY :%s", | |
708 | target_p->name, target_p->user->away); | |
709 | ||
710 | hclientinfo.target = target_p; | |
711 | call_hook(h_burst_client, &hclientinfo); | |
712 | } | |
713 | ||
714 | DLINK_FOREACH(ptr, global_channel_list.head) | |
715 | { | |
716 | chptr = ptr->data; | |
717 | ||
718 | if(*chptr->chname != '#') | |
719 | continue; | |
720 | ||
721 | cur_len = mlen = ircsprintf(buf, ":%s SJOIN %ld %s %s :", me.name, | |
722 | (long) chptr->channelts, chptr->chname, | |
723 | channel_modes(chptr, client_p)); | |
724 | ||
725 | t = buf + mlen; | |
726 | ||
727 | DLINK_FOREACH(uptr, chptr->members.head) | |
728 | { | |
729 | msptr = uptr->data; | |
730 | ||
731 | tlen = strlen(msptr->client_p->name) + 1; | |
732 | if(is_chanop(msptr)) | |
733 | tlen++; | |
734 | if(is_voiced(msptr)) | |
735 | tlen++; | |
736 | ||
737 | if(cur_len + tlen >= BUFSIZE - 3) | |
738 | { | |
739 | t--; | |
740 | *t = '\0'; | |
741 | sendto_one(client_p, "%s", buf); | |
742 | cur_len = mlen; | |
743 | t = buf + mlen; | |
744 | } | |
745 | ||
746 | ircsprintf(t, "%s%s ", find_channel_status(msptr, 1), | |
747 | msptr->client_p->name); | |
748 | ||
749 | cur_len += tlen; | |
750 | t += tlen; | |
751 | } | |
752 | ||
753 | if (dlink_list_length(&chptr->members) > 0) | |
754 | { | |
755 | /* remove trailing space */ | |
756 | t--; | |
757 | *t = '\0'; | |
758 | } | |
759 | sendto_one(client_p, "%s", buf); | |
760 | ||
761 | burst_modes_TS5(client_p, chptr->chname, &chptr->banlist, 'b'); | |
762 | ||
763 | if(IsCapable(client_p, CAP_EX)) | |
764 | burst_modes_TS5(client_p, chptr->chname, &chptr->exceptlist, 'e'); | |
765 | ||
766 | if(IsCapable(client_p, CAP_IE)) | |
767 | burst_modes_TS5(client_p, chptr->chname, &chptr->invexlist, 'I'); | |
768 | ||
769 | burst_modes_TS5(client_p, chptr->chname, &chptr->quietlist, 'q'); | |
770 | ||
771 | if(IsCapable(client_p, CAP_TB) && chptr->topic != NULL) | |
772 | sendto_one(client_p, ":%s TB %s %ld %s%s:%s", | |
773 | me.name, chptr->chname, (long) chptr->topic_time, | |
774 | ConfigChannel.burst_topicwho ? chptr->topic_info : "", | |
775 | ConfigChannel.burst_topicwho ? " " : "", | |
776 | chptr->topic); | |
777 | ||
778 | hchaninfo.chptr = chptr; | |
779 | call_hook(h_burst_channel, &hchaninfo); | |
780 | } | |
781 | ||
782 | hclientinfo.target = NULL; | |
783 | call_hook(h_burst_finished, &hclientinfo); | |
784 | } | |
785 | ||
786 | /* | |
787 | * burst_TS6 | |
788 | * | |
789 | * inputs - client (server) to send nick towards | |
790 | * - client to send nick for | |
791 | * output - NONE | |
792 | * side effects - NICK message is sent towards given client_p | |
793 | */ | |
794 | static void | |
795 | burst_TS6(struct Client *client_p) | |
796 | { | |
797 | static char ubuf[12]; | |
798 | struct Client *target_p; | |
799 | struct Channel *chptr; | |
800 | struct membership *msptr; | |
801 | hook_data_client hclientinfo; | |
802 | hook_data_channel hchaninfo; | |
803 | dlink_node *ptr; | |
804 | dlink_node *uptr; | |
805 | char *t; | |
806 | int tlen, mlen; | |
807 | int cur_len = 0; | |
808 | ||
809 | hclientinfo.client = hchaninfo.client = client_p; | |
810 | ||
811 | DLINK_FOREACH(ptr, global_client_list.head) | |
812 | { | |
813 | target_p = ptr->data; | |
814 | ||
815 | if(!IsPerson(target_p)) | |
816 | continue; | |
817 | ||
818 | send_umode(NULL, target_p, 0, 0, ubuf); | |
819 | if(!*ubuf) | |
820 | { | |
821 | ubuf[0] = '+'; | |
822 | ubuf[1] = '\0'; | |
823 | } | |
824 | ||
825 | if(has_id(target_p) && IsCapable(client_p, CAP_EUID)) | |
826 | sendto_one(client_p, ":%s EUID %s %d %ld %s %s %s %s %s %s %s :%s", | |
827 | target_p->servptr->id, target_p->name, | |
828 | target_p->hopcount + 1, | |
829 | (long) target_p->tsinfo, ubuf, | |
830 | target_p->username, target_p->host, | |
831 | IsIPSpoof(target_p) ? "0" : target_p->sockhost, | |
832 | target_p->id, | |
833 | IsDynSpoof(target_p) ? target_p->orighost : "*", | |
834 | EmptyString(target_p->user->suser) ? "*" : target_p->user->suser, | |
835 | target_p->info); | |
836 | else if(has_id(target_p)) | |
837 | sendto_one(client_p, ":%s UID %s %d %ld %s %s %s %s %s :%s", | |
838 | target_p->servptr->id, target_p->name, | |
839 | target_p->hopcount + 1, | |
840 | (long) target_p->tsinfo, ubuf, | |
841 | target_p->username, target_p->host, | |
842 | IsIPSpoof(target_p) ? "0" : target_p->sockhost, | |
843 | target_p->id, target_p->info); | |
844 | else | |
845 | sendto_one(client_p, "NICK %s %d %ld %s %s %s %s :%s", | |
846 | target_p->name, | |
847 | target_p->hopcount + 1, | |
848 | (long) target_p->tsinfo, | |
849 | ubuf, | |
850 | target_p->username, target_p->host, | |
851 | target_p->user->server, target_p->info); | |
852 | ||
853 | if(!has_id(target_p) || !IsCapable(client_p, CAP_EUID)) | |
854 | { | |
855 | if(IsDynSpoof(target_p)) | |
856 | sendto_one(client_p, ":%s ENCAP * REALHOST %s", | |
857 | use_id(target_p), target_p->orighost); | |
858 | if(!EmptyString(target_p->user->suser)) | |
859 | sendto_one(client_p, ":%s ENCAP * LOGIN %s", | |
860 | use_id(target_p), target_p->user->suser); | |
861 | } | |
862 | ||
863 | if(ConfigFileEntry.burst_away && !EmptyString(target_p->user->away)) | |
864 | sendto_one(client_p, ":%s AWAY :%s", | |
865 | use_id(target_p), | |
866 | target_p->user->away); | |
867 | ||
868 | hclientinfo.target = target_p; | |
869 | call_hook(h_burst_client, &hclientinfo); | |
870 | } | |
871 | ||
872 | DLINK_FOREACH(ptr, global_channel_list.head) | |
873 | { | |
874 | chptr = ptr->data; | |
875 | ||
876 | if(*chptr->chname != '#') | |
877 | continue; | |
878 | ||
879 | cur_len = mlen = ircsprintf(buf, ":%s SJOIN %ld %s %s :", me.id, | |
880 | (long) chptr->channelts, chptr->chname, | |
881 | channel_modes(chptr, client_p)); | |
882 | ||
883 | t = buf + mlen; | |
884 | ||
885 | DLINK_FOREACH(uptr, chptr->members.head) | |
886 | { | |
887 | msptr = uptr->data; | |
888 | ||
889 | tlen = strlen(use_id(msptr->client_p)) + 1; | |
890 | if(is_chanop(msptr)) | |
891 | tlen++; | |
892 | if(is_voiced(msptr)) | |
893 | tlen++; | |
894 | ||
895 | if(cur_len + tlen >= BUFSIZE - 3) | |
896 | { | |
897 | *(t-1) = '\0'; | |
898 | sendto_one(client_p, "%s", buf); | |
899 | cur_len = mlen; | |
900 | t = buf + mlen; | |
901 | } | |
902 | ||
903 | ircsprintf(t, "%s%s ", find_channel_status(msptr, 1), | |
904 | use_id(msptr->client_p)); | |
905 | ||
906 | cur_len += tlen; | |
907 | t += tlen; | |
908 | } | |
909 | ||
910 | if (dlink_list_length(&chptr->members) > 0) | |
911 | { | |
912 | /* remove trailing space */ | |
913 | *(t-1) = '\0'; | |
914 | } | |
915 | sendto_one(client_p, "%s", buf); | |
916 | ||
917 | if(dlink_list_length(&chptr->banlist) > 0) | |
918 | burst_modes_TS6(client_p, chptr, &chptr->banlist, 'b'); | |
919 | ||
920 | if(IsCapable(client_p, CAP_EX) && | |
921 | dlink_list_length(&chptr->exceptlist) > 0) | |
922 | burst_modes_TS6(client_p, chptr, &chptr->exceptlist, 'e'); | |
923 | ||
924 | if(IsCapable(client_p, CAP_IE) && | |
925 | dlink_list_length(&chptr->invexlist) > 0) | |
926 | burst_modes_TS6(client_p, chptr, &chptr->invexlist, 'I'); | |
927 | ||
928 | if(dlink_list_length(&chptr->quietlist) > 0) | |
929 | burst_modes_TS6(client_p, chptr, &chptr->quietlist, 'q'); | |
930 | ||
931 | if(IsCapable(client_p, CAP_TB) && chptr->topic != NULL) | |
932 | sendto_one(client_p, ":%s TB %s %ld %s%s:%s", | |
933 | me.id, chptr->chname, (long) chptr->topic_time, | |
934 | ConfigChannel.burst_topicwho ? chptr->topic_info : "", | |
935 | ConfigChannel.burst_topicwho ? " " : "", | |
936 | chptr->topic); | |
937 | ||
938 | hchaninfo.chptr = chptr; | |
939 | call_hook(h_burst_channel, &hchaninfo); | |
940 | } | |
941 | ||
942 | hclientinfo.target = NULL; | |
943 | call_hook(h_burst_finished, &hclientinfo); | |
944 | } | |
945 | ||
946 | /* | |
947 | * show_capabilities - show current server capabilities | |
948 | * | |
949 | * inputs - pointer to an struct Client | |
950 | * output - pointer to static string | |
951 | * side effects - build up string representing capabilities of server listed | |
952 | */ | |
953 | const char * | |
954 | show_capabilities(struct Client *target_p) | |
955 | { | |
956 | static char msgbuf[BUFSIZE]; | |
957 | struct Capability *cap; | |
958 | char *t; | |
959 | int tl; | |
960 | ||
961 | t = msgbuf; | |
962 | tl = ircsprintf(msgbuf, "TS "); | |
963 | t += tl; | |
964 | ||
965 | if(!IsServer(target_p) || !target_p->serv->caps) /* short circuit if no caps */ | |
966 | { | |
967 | msgbuf[2] = '\0'; | |
968 | return msgbuf; | |
969 | } | |
970 | ||
971 | for (cap = captab; cap->cap; ++cap) | |
972 | { | |
973 | if(cap->cap & target_p->serv->caps) | |
974 | { | |
975 | tl = ircsprintf(t, "%s ", cap->name); | |
976 | t += tl; | |
977 | } | |
978 | } | |
979 | ||
980 | t--; | |
981 | *t = '\0'; | |
982 | ||
983 | return msgbuf; | |
984 | } | |
985 | ||
986 | /* | |
987 | * server_estab | |
988 | * | |
989 | * inputs - pointer to a struct Client | |
990 | * output - | |
991 | * side effects - | |
992 | */ | |
993 | int | |
994 | server_estab(struct Client *client_p) | |
995 | { | |
996 | struct Client *target_p; | |
997 | struct server_conf *server_p; | |
998 | hook_data_client hdata; | |
999 | char *host; | |
1000 | dlink_node *ptr; | |
1001 | ||
1002 | s_assert(NULL != client_p); | |
1003 | if(client_p == NULL) | |
1004 | return -1; | |
1005 | ClearAccess(client_p); | |
1006 | ||
1007 | host = client_p->name; | |
1008 | ||
1009 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
1010 | { | |
1011 | /* This shouldn't happen, better tell the ops... -A1kmm */ | |
1012 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1013 | "Warning: Lost connect{} block for server %s!", host); | |
1014 | return exit_client(client_p, client_p, client_p, "Lost connect{} block!"); | |
1015 | } | |
1016 | ||
1017 | /* We shouldn't have to check this, it should already done before | |
1018 | * server_estab is called. -A1kmm | |
1019 | */ | |
1020 | if(client_p->localClient->passwd) | |
1021 | { | |
1022 | memset(client_p->localClient->passwd, 0, strlen(client_p->localClient->passwd)); | |
1023 | MyFree(client_p->localClient->passwd); | |
1024 | client_p->localClient->passwd = NULL; | |
1025 | } | |
1026 | ||
1027 | /* Its got identd , since its a server */ | |
1028 | SetGotId(client_p); | |
1029 | ||
1030 | /* If there is something in the serv_list, it might be this | |
1031 | * connecting server.. | |
1032 | */ | |
1033 | if(!ServerInfo.hub && serv_list.head) | |
1034 | { | |
1035 | if(client_p != serv_list.head->data || serv_list.head->next) | |
1036 | { | |
1037 | ServerStats->is_ref++; | |
1038 | sendto_one(client_p, "ERROR :I'm a leaf not a hub"); | |
1039 | return exit_client(client_p, client_p, client_p, "I'm a leaf"); | |
1040 | } | |
1041 | } | |
1042 | ||
1043 | if(IsUnknown(client_p)) | |
1044 | { | |
1045 | /* | |
1046 | * jdc -- 1. Use EmptyString(), not [0] index reference. | |
1047 | * 2. Check ->spasswd, not ->passwd. | |
1048 | */ | |
1049 | if(!EmptyString(server_p->spasswd)) | |
1050 | { | |
1051 | /* kludge, if we're not using TS6, dont ever send | |
1052 | * ourselves as being TS6 capable. | |
1053 | */ | |
1054 | if(ServerInfo.use_ts6) | |
1055 | sendto_one(client_p, "PASS %s TS %d :%s", | |
1056 | server_p->spasswd, TS_CURRENT, me.id); | |
1057 | else | |
1058 | sendto_one(client_p, "PASS %s :TS", | |
1059 | server_p->spasswd); | |
1060 | } | |
1061 | ||
1062 | /* pass info to new server */ | |
1063 | send_capabilities(client_p, default_server_capabs | |
1064 | | (ServerConfCompressed(server_p) ? CAP_ZIP_SUPPORTED : 0) | |
1065 | | (ServerConfTb(server_p) ? CAP_TB : 0)); | |
1066 | ||
1067 | sendto_one(client_p, "SERVER %s 1 :%s%s", | |
1068 | me.name, | |
1069 | ConfigServerHide.hidden ? "(H) " : "", | |
1070 | (me.info[0]) ? (me.info) : "IRCers United"); | |
1071 | } | |
1072 | ||
1073 | if(!comm_set_buffers(client_p->localClient->fd, READBUF_SIZE)) | |
1074 | report_error(SETBUF_ERROR_MSG, | |
1075 | get_server_name(client_p, SHOW_IP), | |
1076 | log_client_name(client_p, SHOW_IP), errno); | |
1077 | ||
1078 | /* Hand the server off to servlink now */ | |
1079 | if(IsCapable(client_p, CAP_ZIP)) | |
1080 | { | |
1081 | if(fork_server(client_p) < 0) | |
1082 | { | |
1083 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1084 | "Warning: fork failed for server %s -- check servlink_path (%s)", | |
1085 | get_server_name(client_p, HIDE_IP), | |
1086 | ConfigFileEntry.servlink_path); | |
1087 | return exit_client(client_p, client_p, client_p, "Fork failed"); | |
1088 | } | |
1089 | start_io(client_p); | |
1090 | SetServlink(client_p); | |
1091 | } | |
1092 | ||
1093 | sendto_one(client_p, "SVINFO %d %d 0 :%ld", TS_CURRENT, TS_MIN, CurrentTime); | |
1094 | ||
1095 | client_p->servptr = &me; | |
1096 | ||
1097 | if(IsAnyDead(client_p)) | |
1098 | return CLIENT_EXITED; | |
1099 | ||
1100 | SetServer(client_p); | |
1101 | ||
1102 | /* Update the capability combination usage counts */ | |
1103 | set_chcap_usage_counts(client_p); | |
1104 | ||
1105 | dlinkAdd(client_p, &client_p->lnode, &me.serv->servers); | |
1106 | dlinkMoveNode(&client_p->localClient->tnode, &unknown_list, &serv_list); | |
1107 | dlinkAddTailAlloc(client_p, &global_serv_list); | |
1108 | ||
1109 | if(has_id(client_p)) | |
1110 | add_to_id_hash(client_p->id, client_p); | |
1111 | ||
1112 | add_to_client_hash(client_p->name, client_p); | |
1113 | /* doesnt duplicate client_p->serv if allocated this struct already */ | |
1114 | make_server(client_p); | |
1115 | client_p->serv->up = me.name; | |
1116 | client_p->serv->upid = me.id; | |
1117 | ||
1118 | client_p->serv->caps = client_p->localClient->caps; | |
1119 | ||
1120 | if(client_p->localClient->fullcaps) | |
1121 | { | |
1122 | DupString(client_p->serv->fullcaps, client_p->localClient->fullcaps); | |
1123 | MyFree(client_p->localClient->fullcaps); | |
1124 | client_p->localClient->fullcaps = NULL; | |
1125 | } | |
1126 | ||
1127 | /* add it to scache */ | |
1128 | find_or_add(client_p->name); | |
1129 | client_p->localClient->firsttime = CurrentTime; | |
1130 | /* fixing eob timings.. -gnp */ | |
1131 | ||
1132 | /* Show the real host/IP to admins */ | |
1133 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1134 | "Link with %s established: (%s) link", | |
1135 | get_server_name(client_p, SHOW_IP), | |
1136 | show_capabilities(client_p)); | |
1137 | ||
1138 | ilog(L_SERVER, "Link with %s established: (%s) link", | |
1139 | log_client_name(client_p, SHOW_IP), show_capabilities(client_p)); | |
1140 | ||
1141 | hdata.client = &me; | |
1142 | hdata.target = client_p; | |
1143 | call_hook(h_server_introduced, &hdata); | |
1144 | ||
1145 | if(HasServlink(client_p)) | |
1146 | { | |
1147 | /* we won't overflow FD_DESC_SZ here, as it can hold | |
1148 | * client_p->name + 64 | |
1149 | */ | |
1150 | comm_note(client_p->localClient->fd, "slink data: %s", client_p->name); | |
1151 | comm_note(client_p->localClient->ctrlfd, "slink ctrl: %s", client_p->name); | |
1152 | } | |
1153 | else | |
1154 | comm_note(client_p->localClient->fd, "Server: %s", client_p->name); | |
1155 | ||
1156 | /* | |
1157 | ** Old sendto_serv_but_one() call removed because we now | |
1158 | ** need to send different names to different servers | |
1159 | ** (domain name matching) Send new server to other servers. | |
1160 | */ | |
1161 | DLINK_FOREACH(ptr, serv_list.head) | |
1162 | { | |
1163 | target_p = ptr->data; | |
1164 | ||
1165 | if(target_p == client_p) | |
1166 | continue; | |
1167 | ||
1168 | if(has_id(target_p) && has_id(client_p)) | |
1169 | { | |
1170 | sendto_one(target_p, ":%s SID %s 2 %s :%s%s", | |
1171 | me.id, client_p->name, client_p->id, | |
1172 | IsHidden(client_p) ? "(H) " : "", client_p->info); | |
1173 | ||
1174 | if(IsCapable(target_p, CAP_ENCAP) && | |
1175 | !EmptyString(client_p->serv->fullcaps)) | |
1176 | sendto_one(target_p, ":%s ENCAP * GCAP :%s", | |
1177 | client_p->id, client_p->serv->fullcaps); | |
1178 | } | |
1179 | else | |
1180 | { | |
1181 | sendto_one(target_p, ":%s SERVER %s 2 :%s%s", | |
1182 | me.name, client_p->name, | |
1183 | IsHidden(client_p) ? "(H) " : "", client_p->info); | |
1184 | ||
1185 | if(IsCapable(target_p, CAP_ENCAP) && | |
1186 | !EmptyString(client_p->serv->fullcaps)) | |
1187 | sendto_one(target_p, ":%s ENCAP * GCAP :%s", | |
1188 | client_p->name, client_p->serv->fullcaps); | |
1189 | } | |
1190 | } | |
1191 | ||
1192 | /* | |
1193 | ** Pass on my client information to the new server | |
1194 | ** | |
1195 | ** First, pass only servers (idea is that if the link gets | |
1196 | ** cancelled beacause the server was already there, | |
1197 | ** there are no NICK's to be cancelled...). Of course, | |
1198 | ** if cancellation occurs, all this info is sent anyway, | |
1199 | ** and I guess the link dies when a read is attempted...? --msa | |
1200 | ** | |
1201 | ** Note: Link cancellation to occur at this point means | |
1202 | ** that at least two servers from my fragment are building | |
1203 | ** up connection this other fragment at the same time, it's | |
1204 | ** a race condition, not the normal way of operation... | |
1205 | ** | |
1206 | ** ALSO NOTE: using the get_client_name for server names-- | |
1207 | ** see previous *WARNING*!!! (Also, original inpath | |
1208 | ** is destroyed...) | |
1209 | */ | |
1210 | DLINK_FOREACH(ptr, global_serv_list.head) | |
1211 | { | |
1212 | target_p = ptr->data; | |
1213 | ||
1214 | /* target_p->from == target_p for target_p == client_p */ | |
1215 | if(IsMe(target_p) || target_p->from == client_p) | |
1216 | continue; | |
1217 | ||
1218 | /* presumption, if target has an id, so does its uplink */ | |
1219 | if(has_id(client_p) && has_id(target_p)) | |
1220 | sendto_one(client_p, ":%s SID %s %d %s :%s%s", | |
1221 | target_p->serv->upid, target_p->name, | |
1222 | target_p->hopcount + 1, target_p->id, | |
1223 | IsHidden(target_p) ? "(H) " : "", target_p->info); | |
1224 | else | |
1225 | sendto_one(client_p, ":%s SERVER %s %d :%s%s", | |
1226 | target_p->serv->up, | |
1227 | target_p->name, target_p->hopcount + 1, | |
1228 | IsHidden(target_p) ? "(H) " : "", target_p->info); | |
1229 | ||
1230 | if(IsCapable(client_p, CAP_ENCAP) && | |
1231 | !EmptyString(target_p->serv->fullcaps)) | |
1232 | sendto_one(client_p, ":%s ENCAP * GCAP :%s", | |
1233 | get_id(target_p, client_p), | |
1234 | target_p->serv->fullcaps); | |
1235 | } | |
1236 | ||
1237 | if(has_id(client_p)) | |
1238 | burst_TS6(client_p); | |
1239 | else | |
1240 | burst_TS5(client_p); | |
1241 | ||
1242 | /* Always send a PING after connect burst is done */ | |
1243 | sendto_one(client_p, "PING :%s", get_id(&me, client_p)); | |
1244 | ||
1245 | free_pre_client(client_p); | |
1246 | ||
1247 | return 0; | |
1248 | } | |
1249 | ||
1250 | static void | |
1251 | start_io(struct Client *server) | |
1252 | { | |
1253 | unsigned char *iobuf; | |
1254 | int c = 0; | |
1255 | int linecount = 0; | |
1256 | int linelen; | |
1257 | ||
1258 | iobuf = MyMalloc(256); /* XXX: This seems arbitrary. Perhaps make it IRCD_BUFSIZE? --nenolod */ | |
1259 | ||
1260 | if(IsCapable(server, CAP_ZIP)) | |
1261 | { | |
1262 | /* ziplink */ | |
1263 | iobuf[c++] = SLINKCMD_SET_ZIP_OUT_LEVEL; | |
1264 | iobuf[c++] = 0; /* | */ | |
1265 | iobuf[c++] = 1; /* \ len is 1 */ | |
1266 | iobuf[c++] = ConfigFileEntry.compression_level; | |
1267 | iobuf[c++] = SLINKCMD_START_ZIP_IN; | |
1268 | iobuf[c++] = SLINKCMD_START_ZIP_OUT; | |
1269 | } | |
1270 | ||
1271 | while (MyConnect(server)) | |
1272 | { | |
1273 | linecount++; | |
1274 | ||
1275 | iobuf = MyRealloc(iobuf, (c + READBUF_SIZE + 64)); | |
1276 | ||
1277 | /* store data in c+3 to allow for SLINKCMD_INJECT_RECVQ and len u16 */ | |
1278 | linelen = linebuf_get(&server->localClient->buf_recvq, (char *) (iobuf + c + 3), READBUF_SIZE, LINEBUF_PARTIAL, LINEBUF_RAW); /* include partial lines */ | |
1279 | ||
1280 | if(linelen) | |
1281 | { | |
1282 | iobuf[c++] = SLINKCMD_INJECT_RECVQ; | |
1283 | iobuf[c++] = (linelen >> 8); | |
1284 | iobuf[c++] = (linelen & 0xff); | |
1285 | c += linelen; | |
1286 | } | |
1287 | else | |
1288 | break; | |
1289 | } | |
1290 | ||
1291 | while (MyConnect(server)) | |
1292 | { | |
1293 | linecount++; | |
1294 | ||
1295 | iobuf = MyRealloc(iobuf, (c + BUF_DATA_SIZE + 64)); | |
1296 | ||
1297 | /* store data in c+3 to allow for SLINKCMD_INJECT_RECVQ and len u16 */ | |
1298 | linelen = linebuf_get(&server->localClient->buf_sendq, | |
1299 | (char *) (iobuf + c + 3), READBUF_SIZE, | |
1300 | LINEBUF_PARTIAL, LINEBUF_PARSED); /* include partial lines */ | |
1301 | ||
1302 | if(linelen) | |
1303 | { | |
1304 | iobuf[c++] = SLINKCMD_INJECT_SENDQ; | |
1305 | iobuf[c++] = (linelen >> 8); | |
1306 | iobuf[c++] = (linelen & 0xff); | |
1307 | c += linelen; | |
1308 | } | |
1309 | else | |
1310 | break; | |
1311 | } | |
1312 | ||
1313 | /* start io */ | |
1314 | iobuf[c++] = SLINKCMD_INIT; | |
1315 | ||
1316 | server->localClient->slinkq = iobuf; | |
1317 | server->localClient->slinkq_ofs = 0; | |
1318 | server->localClient->slinkq_len = c; | |
1319 | ||
1320 | /* schedule a write */ | |
1321 | send_queued_slink_write(server->localClient->ctrlfd, server); | |
1322 | } | |
1323 | ||
1324 | /* | |
1325 | * fork_server | |
1326 | * | |
1327 | * inputs - struct Client *server | |
1328 | * output - success: 0 / failure: -1 | |
1329 | * side effect - fork, and exec SERVLINK to handle this connection | |
1330 | */ | |
1331 | static int | |
1332 | fork_server(struct Client *server) | |
1333 | { | |
1334 | int ret; | |
1335 | int i; | |
1336 | int ctrl_fds[2]; | |
1337 | int data_fds[2]; | |
1338 | ||
1339 | char fd_str[4][6]; | |
1340 | char *kid_argv[7]; | |
1341 | char slink[] = "-slink"; | |
1342 | ||
1343 | ||
1344 | /* ctrl */ | |
1345 | #ifdef HAVE_SOCKETPAIR | |
1346 | if(socketpair(AF_UNIX, SOCK_STREAM, 0, ctrl_fds) < 0) | |
1347 | #else | |
1348 | if(inet_socketpair(AF_INET,SOCK_STREAM, 0, ctrl_fds) < 0) | |
1349 | #endif | |
1350 | goto fork_error; | |
1351 | ||
1352 | ||
1353 | ||
1354 | /* data */ | |
1355 | #ifdef HAVE_SOCKETPAIR | |
1356 | if(socketpair(AF_UNIX, SOCK_STREAM, 0, data_fds) < 0) | |
1357 | #else | |
1358 | if(inet_socketpair(AF_INET,SOCK_STREAM, 0, data_fds) < 0) | |
1359 | #endif | |
1360 | goto fork_error; | |
1361 | ||
1362 | ||
1363 | #ifdef __CYGWIN__ | |
1364 | if((ret = vfork()) < 0) | |
1365 | #else | |
1366 | if((ret = fork()) < 0) | |
1367 | #endif | |
1368 | goto fork_error; | |
1369 | else if(ret == 0) | |
1370 | { | |
1371 | /* set our fds as non blocking and close everything else */ | |
1372 | for (i = 0; i < HARD_FDLIMIT; i++) | |
1373 | { | |
1374 | ||
1375 | ||
1376 | if((i == ctrl_fds[1]) || (i == data_fds[1]) || (i == server->localClient->fd)) | |
1377 | { | |
1378 | comm_set_nb(i); | |
1379 | } | |
1380 | else | |
1381 | { | |
1382 | #ifdef __CYGWIN__ | |
1383 | if(i > 2) /* don't close std* */ | |
1384 | #endif | |
1385 | close(i); | |
1386 | } | |
1387 | } | |
1388 | ||
1389 | ircsnprintf(fd_str[0], sizeof(fd_str[0]), "%d", ctrl_fds[1]); | |
1390 | ircsnprintf(fd_str[1], sizeof(fd_str[1]), "%d", data_fds[1]); | |
1391 | ircsnprintf(fd_str[2], sizeof(fd_str[2]), "%d", server->localClient->fd); | |
1392 | kid_argv[0] = slink; | |
1393 | kid_argv[1] = fd_str[0]; | |
1394 | kid_argv[2] = fd_str[1]; | |
1395 | kid_argv[3] = fd_str[2]; | |
1396 | kid_argv[4] = NULL; | |
1397 | ||
1398 | /* exec servlink program */ | |
1399 | execv(ConfigFileEntry.servlink_path, kid_argv); | |
1400 | ||
1401 | /* We're still here, abort. */ | |
1402 | _exit(1); | |
1403 | } | |
1404 | else | |
1405 | { | |
1406 | comm_close(server->localClient->fd); | |
1407 | ||
1408 | /* close the childs end of the pipes */ | |
1409 | close(ctrl_fds[1]); | |
1410 | close(data_fds[1]); | |
1411 | ||
1412 | s_assert(server->localClient); | |
1413 | server->localClient->ctrlfd = ctrl_fds[0]; | |
1414 | server->localClient->fd = data_fds[0]; | |
1415 | ||
1416 | if(!comm_set_nb(server->localClient->fd)) | |
1417 | { | |
1418 | report_error(NONB_ERROR_MSG, | |
1419 | get_server_name(server, SHOW_IP), | |
1420 | log_client_name(server, SHOW_IP), | |
1421 | errno); | |
1422 | } | |
1423 | ||
1424 | if(!comm_set_nb(server->localClient->ctrlfd)) | |
1425 | { | |
1426 | report_error(NONB_ERROR_MSG, | |
1427 | get_server_name(server, SHOW_IP), | |
1428 | log_client_name(server, SHOW_IP), | |
1429 | errno); | |
1430 | } | |
1431 | ||
1432 | comm_open(server->localClient->ctrlfd, FD_SOCKET, NULL); | |
1433 | comm_open(server->localClient->fd, FD_SOCKET, NULL); | |
1434 | ||
1435 | read_ctrl_packet(server->localClient->ctrlfd, server); | |
1436 | read_packet(server->localClient->fd, server); | |
1437 | } | |
1438 | ||
1439 | return 0; | |
1440 | ||
1441 | fork_error: | |
1442 | /* this is ugly, but nicer than repeating | |
1443 | * about 50 close() statements everywhre... */ | |
1444 | close(data_fds[0]); | |
1445 | close(data_fds[1]); | |
1446 | close(ctrl_fds[0]); | |
1447 | close(ctrl_fds[1]); | |
1448 | return -1; | |
1449 | } | |
1450 | ||
1451 | /* | |
1452 | * New server connection code | |
1453 | * Based upon the stuff floating about in s_bsd.c | |
1454 | * -- adrian | |
1455 | */ | |
1456 | ||
1457 | /* | |
1458 | * serv_connect() - initiate a server connection | |
1459 | * | |
1460 | * inputs - pointer to conf | |
1461 | * - pointer to client doing the connet | |
1462 | * output - | |
1463 | * side effects - | |
1464 | * | |
1465 | * This code initiates a connection to a server. It first checks to make | |
1466 | * sure the given server exists. If this is the case, it creates a socket, | |
1467 | * creates a client, saves the socket information in the client, and | |
1468 | * initiates a connection to the server through comm_connect_tcp(). The | |
1469 | * completion of this goes through serv_completed_connection(). | |
1470 | * | |
1471 | * We return 1 if the connection is attempted, since we don't know whether | |
1472 | * it suceeded or not, and 0 if it fails in here somewhere. | |
1473 | */ | |
1474 | int | |
1475 | serv_connect(struct server_conf *server_p, struct Client *by) | |
1476 | { | |
1477 | struct Client *client_p; | |
1478 | struct irc_sockaddr_storage myipnum; | |
1479 | int fd; | |
1480 | ||
1481 | s_assert(server_p != NULL); | |
1482 | if(server_p == NULL) | |
1483 | return 0; | |
1484 | ||
1485 | /* | |
1486 | * Make sure this server isn't already connected | |
1487 | */ | |
1488 | if((client_p = find_server(NULL, server_p->name))) | |
1489 | { | |
1490 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
1491 | "Server %s already present from %s", | |
1492 | server_p->name, get_server_name(client_p, SHOW_IP)); | |
1493 | if(by && IsPerson(by) && !MyClient(by)) | |
1494 | sendto_one_notice(by, ":Server %s already present from %s", | |
1495 | server_p->name, get_server_name(client_p, SHOW_IP)); | |
1496 | return 0; | |
1497 | } | |
1498 | ||
1499 | /* create a socket for the server connection */ | |
1500 | if((fd = comm_socket(server_p->aftype, SOCK_STREAM, 0, NULL)) < 0) | |
1501 | { | |
1502 | /* Eek, failure to create the socket */ | |
1503 | report_error("opening stream socket to %s: %s", | |
1504 | server_p->name, server_p->name, errno); | |
1505 | return 0; | |
1506 | } | |
1507 | ||
1508 | /* servernames are always guaranteed under HOSTLEN chars */ | |
1509 | comm_note(fd, "Server: %s", server_p->name); | |
1510 | ||
1511 | /* Create a local client */ | |
1512 | client_p = make_client(NULL); | |
1513 | ||
1514 | /* Copy in the server, hostname, fd | |
1515 | * The sockhost may be a hostname, this will be corrected later | |
1516 | * -- jilles | |
1517 | */ | |
1518 | strlcpy(client_p->name, server_p->name, sizeof(client_p->name)); | |
1519 | strlcpy(client_p->host, server_p->host, sizeof(client_p->host)); | |
1520 | strlcpy(client_p->sockhost, server_p->host, sizeof(client_p->sockhost)); | |
1521 | client_p->localClient->fd = fd; | |
1522 | ||
1523 | /* | |
1524 | * Set up the initial server evilness, ripped straight from | |
1525 | * connect_server(), so don't blame me for it being evil. | |
1526 | * -- adrian | |
1527 | */ | |
1528 | ||
1529 | if(!comm_set_buffers(client_p->localClient->fd, READBUF_SIZE)) | |
1530 | { | |
1531 | report_error(SETBUF_ERROR_MSG, | |
1532 | get_server_name(client_p, SHOW_IP), | |
1533 | log_client_name(client_p, SHOW_IP), | |
1534 | errno); | |
1535 | } | |
1536 | ||
1537 | /* | |
1538 | * Attach config entries to client here rather than in | |
1539 | * serv_connect_callback(). This to avoid null pointer references. | |
1540 | */ | |
1541 | attach_server_conf(client_p, server_p); | |
1542 | ||
1543 | /* | |
1544 | * at this point we have a connection in progress and C/N lines | |
1545 | * attached to the client, the socket info should be saved in the | |
1546 | * client and it should either be resolved or have a valid address. | |
1547 | * | |
1548 | * The socket has been connected or connect is in progress. | |
1549 | */ | |
1550 | make_server(client_p); | |
1551 | if(by && IsPerson(by)) | |
1552 | { | |
1553 | strcpy(client_p->serv->by, by->name); | |
1554 | if(client_p->serv->user) | |
1555 | free_user(client_p->serv->user, NULL); | |
1556 | client_p->serv->user = by->user; | |
1557 | by->user->refcnt++; | |
1558 | } | |
1559 | else | |
1560 | { | |
1561 | strcpy(client_p->serv->by, "AutoConn."); | |
1562 | if(client_p->serv->user) | |
1563 | free_user(client_p->serv->user, NULL); | |
1564 | client_p->serv->user = NULL; | |
1565 | } | |
1566 | client_p->serv->up = me.name; | |
1567 | client_p->serv->upid = me.id; | |
1568 | SetConnecting(client_p); | |
1569 | dlinkAddTail(client_p, &client_p->node, &global_client_list); | |
1570 | ||
1571 | /* log */ | |
1572 | ilog(L_SERVER, "Connecting to %s[%s] port %d (%s)", server_p->name, server_p->host, server_p->port, | |
1573 | #ifdef IPV6 | |
1574 | server_p->aftype == AF_INET6 ? "IPv6" : | |
1575 | #endif | |
1576 | (server_p->aftype == AF_INET ? "IPv4" : "?")); | |
1577 | ||
1578 | if(ServerConfVhosted(server_p)) | |
1579 | { | |
1580 | memcpy(&myipnum, &server_p->my_ipnum, sizeof(myipnum)); | |
1581 | ((struct sockaddr_in *)&myipnum)->sin_port = 0; | |
1582 | myipnum.ss_family = server_p->aftype; | |
1583 | ||
1584 | } | |
1585 | else if(server_p->aftype == AF_INET && ServerInfo.specific_ipv4_vhost) | |
1586 | { | |
1587 | memcpy(&myipnum, &ServerInfo.ip, sizeof(myipnum)); | |
1588 | ((struct sockaddr_in *)&myipnum)->sin_port = 0; | |
1589 | myipnum.ss_family = AF_INET; | |
1590 | SET_SS_LEN(myipnum, sizeof(struct sockaddr_in)); | |
1591 | } | |
1592 | ||
1593 | #ifdef IPV6 | |
1594 | else if((server_p->aftype == AF_INET6) && ServerInfo.specific_ipv6_vhost) | |
1595 | { | |
1596 | memcpy(&myipnum, &ServerInfo.ip6, sizeof(myipnum)); | |
1597 | ((struct sockaddr_in6 *)&myipnum)->sin6_port = 0; | |
1598 | myipnum.ss_family = AF_INET6; | |
1599 | SET_SS_LEN(myipnum, sizeof(struct sockaddr_in6)); | |
1600 | } | |
1601 | #endif | |
1602 | else | |
1603 | { | |
1604 | comm_connect_tcp(client_p->localClient->fd, server_p->host, | |
1605 | server_p->port, NULL, 0, serv_connect_callback, | |
1606 | client_p, server_p->aftype, | |
1607 | ConfigFileEntry.connect_timeout); | |
1608 | return 1; | |
1609 | } | |
1610 | ||
1611 | comm_connect_tcp(client_p->localClient->fd, server_p->host, | |
1612 | server_p->port, (struct sockaddr *) &myipnum, | |
1613 | GET_SS_LEN(myipnum), serv_connect_callback, client_p, | |
1614 | myipnum.ss_family, ConfigFileEntry.connect_timeout); | |
1615 | ||
1616 | return 1; | |
1617 | } | |
1618 | ||
1619 | /* | |
1620 | * serv_connect_callback() - complete a server connection. | |
1621 | * | |
1622 | * This routine is called after the server connection attempt has | |
1623 | * completed. If unsucessful, an error is sent to ops and the client | |
1624 | * is closed. If sucessful, it goes through the initialisation/check | |
1625 | * procedures, the capabilities are sent, and the socket is then | |
1626 | * marked for reading. | |
1627 | */ | |
1628 | static void | |
1629 | serv_connect_callback(int fd, int status, void *data) | |
1630 | { | |
1631 | struct Client *client_p = data; | |
1632 | struct server_conf *server_p; | |
1633 | char *errstr; | |
1634 | fde_t *F = comm_locate_fd(fd); | |
1635 | ||
1636 | /* First, make sure its a real client! */ | |
1637 | s_assert(client_p != NULL); | |
1638 | s_assert(client_p->localClient->fd == fd); | |
1639 | ||
1640 | if(client_p == NULL) | |
1641 | return; | |
1642 | ||
1643 | /* while we were waiting for the callback, its possible this already | |
1644 | * linked in.. --fl | |
1645 | */ | |
1646 | if(find_server(NULL, client_p->name) != NULL) | |
1647 | { | |
1648 | exit_client(client_p, client_p, &me, "Server Exists"); | |
1649 | return; | |
1650 | } | |
1651 | ||
1652 | /* Next, for backward purposes, record the ip of the server */ | |
1653 | memcpy(&client_p->localClient->ip, &F->connect.hostaddr, sizeof client_p->localClient->ip); | |
1654 | /* Set sockhost properly now -- jilles */ | |
1655 | inetntop_sock((struct sockaddr *)&F->connect.hostaddr, | |
1656 | client_p->sockhost, sizeof client_p->sockhost); | |
1657 | ||
1658 | /* Check the status */ | |
1659 | if(status != COMM_OK) | |
1660 | { | |
1661 | /* COMM_ERR_TIMEOUT wont have an errno associated with it, | |
1662 | * the others will.. --fl | |
1663 | */ | |
1664 | if(status == COMM_ERR_TIMEOUT) | |
1665 | { | |
1666 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1667 | "Error connecting to %s[%s]: %s", | |
1668 | client_p->name, | |
1669 | #ifdef HIDE_SERVERS_IPS | |
1670 | "255.255.255.255", | |
1671 | #else | |
1672 | client_p->host, | |
1673 | #endif | |
1674 | comm_errstr(status)); | |
1675 | ilog(L_SERVER, "Error connecting to %s[%s]: %s", | |
1676 | client_p->name, client_p->sockhost, | |
1677 | comm_errstr(status)); | |
1678 | } | |
1679 | else | |
1680 | { | |
1681 | errstr = strerror(comm_get_sockerr(fd)); | |
1682 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1683 | "Error connecting to %s[%s]: %s (%s)", | |
1684 | client_p->name, | |
1685 | #ifdef HIDE_SERVERS_IPS | |
1686 | "255.255.255.255", | |
1687 | #else | |
1688 | client_p->host, | |
1689 | #endif | |
1690 | comm_errstr(status), errstr); | |
1691 | ilog(L_SERVER, "Error connecting to %s[%s]: %s (%s)", | |
1692 | client_p->name, client_p->sockhost, | |
1693 | comm_errstr(status), errstr); | |
1694 | } | |
1695 | ||
1696 | exit_client(client_p, client_p, &me, comm_errstr(status)); | |
1697 | return; | |
1698 | } | |
1699 | ||
1700 | /* COMM_OK, so continue the connection procedure */ | |
1701 | /* Get the C/N lines */ | |
1702 | if((server_p = client_p->localClient->att_sconf) == NULL) | |
1703 | { | |
1704 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, "Lost connect{} block for %s", | |
1705 | get_server_name(client_p, HIDE_IP)); | |
1706 | exit_client(client_p, client_p, &me, "Lost connect{} block"); | |
1707 | return; | |
1708 | } | |
1709 | ||
1710 | /* Next, send the initial handshake */ | |
1711 | SetHandshake(client_p); | |
1712 | ||
1713 | /* kludge, if we're not using TS6, dont ever send | |
1714 | * ourselves as being TS6 capable. | |
1715 | */ | |
1716 | if(!EmptyString(server_p->spasswd)) | |
1717 | { | |
1718 | if(ServerInfo.use_ts6) | |
1719 | sendto_one(client_p, "PASS %s TS %d :%s", | |
1720 | server_p->spasswd, TS_CURRENT, me.id); | |
1721 | else | |
1722 | sendto_one(client_p, "PASS %s :TS", | |
1723 | server_p->spasswd); | |
1724 | } | |
1725 | ||
1726 | /* pass my info to the new server */ | |
1727 | send_capabilities(client_p, default_server_capabs | |
1728 | | (ServerConfCompressed(server_p) ? CAP_ZIP_SUPPORTED : 0) | |
1729 | | (ServerConfTb(server_p) ? CAP_TB : 0)); | |
1730 | ||
1731 | sendto_one(client_p, "SERVER %s 1 :%s%s", | |
1732 | me.name, | |
1733 | ConfigServerHide.hidden ? "(H) " : "", me.info); | |
1734 | ||
1735 | /* | |
1736 | * If we've been marked dead because a send failed, just exit | |
1737 | * here now and save everyone the trouble of us ever existing. | |
1738 | */ | |
1739 | if(IsAnyDead(client_p)) | |
1740 | { | |
1741 | sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, | |
1742 | "%s went dead during handshake", client_p->name); | |
1743 | exit_client(client_p, client_p, &me, "Went dead during handshake"); | |
1744 | return; | |
1745 | } | |
1746 | ||
1747 | /* don't move to serv_list yet -- we haven't sent a burst! */ | |
1748 | ||
1749 | /* If we get here, we're ok, so lets start reading some data */ | |
1750 | read_packet(fd, client_p); | |
1751 | } | |
1752 | ||
1753 | #ifndef HAVE_SOCKETPAIR | |
1754 | static int | |
1755 | inet_socketpair(int d, int type, int protocol, int sv[2]) | |
1756 | { | |
1757 | struct sockaddr_in addr1, addr2, addr3; | |
1758 | int addr3_len = sizeof(addr3); | |
1759 | int fd, rc; | |
1760 | int port_no = 20000; | |
1761 | ||
1762 | if(d != AF_INET || type != SOCK_STREAM || protocol) | |
1763 | { | |
1764 | errno = EAFNOSUPPORT; | |
1765 | return -1; | |
1766 | } | |
1767 | if(((sv[0] = socket(AF_INET, SOCK_STREAM, 0)) < 0) || ((sv[1] = socket(AF_INET, SOCK_STREAM, 0)) < 0)) | |
1768 | return -1; | |
1769 | ||
1770 | addr1.sin_port = htons(port_no); | |
1771 | addr1.sin_family = AF_INET; | |
1772 | addr1.sin_addr.s_addr = htonl(INADDR_LOOPBACK); | |
1773 | while ((rc = bind (sv[0], (struct sockaddr *) &addr1, sizeof (addr1))) < 0 && errno == EADDRINUSE) | |
1774 | addr1.sin_port = htons(++port_no); | |
1775 | ||
1776 | if(rc < 0) | |
1777 | return -1; | |
1778 | ||
1779 | if(listen(sv[0], 1) < 0) | |
1780 | { | |
1781 | close(sv[0]); | |
1782 | close(sv[1]); | |
1783 | return -1; | |
1784 | } | |
1785 | ||
1786 | addr2.sin_port = htons(port_no); | |
1787 | addr2.sin_family = AF_INET; | |
1788 | addr2.sin_addr.s_addr = htonl(INADDR_LOOPBACK); | |
1789 | if(connect (sv[1], (struct sockaddr *) &addr2, sizeof (addr2)) < 0) | |
1790 | { | |
1791 | close(sv[0]); | |
1792 | close(sv[1]); | |
1793 | return -1; | |
1794 | } | |
1795 | ||
1796 | if((fd = accept(sv[1], (struct sockaddr *) &addr3, &addr3_len)) < 0) | |
1797 | { | |
1798 | close(sv[0]); | |
1799 | close(sv[1]); | |
1800 | return -1; | |
1801 | } | |
1802 | close(sv[0]); | |
1803 | sv[0] = fd; | |
1804 | ||
1805 | return(0); | |
1806 | ||
1807 | } | |
1808 | #endif |