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Commit | Line | Data |
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54ac8b60 VY |
1 | /* |
2 | * ircd-ratbox: A slightly useful ircd. | |
3 | * listener.c: Listens on a port. | |
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 | |
54ac8b60 VY |
23 | */ |
24 | ||
25 | #include "stdinc.h" | |
26 | #include "setup.h" | |
27 | #include "listener.h" | |
28 | #include "client.h" | |
4562c604 | 29 | #include "match.h" |
54ac8b60 VY |
30 | #include "ircd.h" |
31 | #include "ircd_defs.h" | |
32 | #include "numeric.h" | |
33 | #include "s_conf.h" | |
34 | #include "s_newconf.h" | |
35 | #include "s_stats.h" | |
36 | #include "send.h" | |
37 | #include "s_auth.h" | |
38 | #include "reject.h" | |
39 | #include "s_conf.h" | |
40 | #include "hostmask.h" | |
c6d72037 VY |
41 | #include "sslproc.h" |
42 | #include "hash.h" | |
77d3d2db KB |
43 | #include "s_assert.h" |
44 | #include "logger.h" | |
54ac8b60 VY |
45 | |
46 | #ifndef INADDR_NONE | |
47 | #define INADDR_NONE ((unsigned int) 0xffffffff) | |
48 | #endif | |
49 | ||
9ea3ea10 | 50 | #if defined(NO_IN6ADDR_ANY) && defined(RB_IPV6) |
54ac8b60 VY |
51 | static const struct in6_addr in6addr_any = |
52 | { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } } }; | |
55abcbb2 | 53 | #endif |
54ac8b60 | 54 | |
8f103562 | 55 | static struct Listener *ListenerPollList = NULL; |
1087485c | 56 | static int accept_precallback(rb_fde_t *F, struct sockaddr *addr, rb_socklen_t addrlen, void *data); |
8e09c4a2 | 57 | static void accept_callback(rb_fde_t *F, int status, struct sockaddr *addr, rb_socklen_t addrlen, void *data); |
54ac8b60 | 58 | |
8f103562 | 59 | static struct Listener * |
e7046ee5 | 60 | make_listener(struct rb_sockaddr_storage *addr) |
54ac8b60 | 61 | { |
8f103562 | 62 | struct Listener *listener = (struct Listener *) rb_malloc(sizeof(struct Listener)); |
54ac8b60 | 63 | s_assert(0 != listener); |
54ac8b60 | 64 | listener->name = me.name; |
f691939a VY |
65 | listener->F = NULL; |
66 | ||
e7046ee5 | 67 | memcpy(&listener->addr, addr, sizeof(struct rb_sockaddr_storage)); |
54ac8b60 VY |
68 | listener->next = NULL; |
69 | return listener; | |
70 | } | |
71 | ||
72 | void | |
8f103562 | 73 | free_listener(struct Listener *listener) |
54ac8b60 VY |
74 | { |
75 | s_assert(NULL != listener); | |
76 | if(listener == NULL) | |
77 | return; | |
78 | /* | |
79 | * remove from listener list | |
80 | */ | |
81 | if(listener == ListenerPollList) | |
82 | ListenerPollList = listener->next; | |
83 | else | |
84 | { | |
8f103562 | 85 | struct Listener *prev = ListenerPollList; |
54ac8b60 VY |
86 | for (; prev; prev = prev->next) |
87 | { | |
88 | if(listener == prev->next) | |
89 | { | |
90 | prev->next = listener->next; | |
91 | break; | |
92 | } | |
93 | } | |
94 | } | |
95 | ||
96 | /* free */ | |
97 | rb_free(listener); | |
98 | } | |
99 | ||
100 | #define PORTNAMELEN 6 /* ":31337" */ | |
101 | ||
40173bcb JT |
102 | /* |
103 | * get_listener_port - return displayable listener port | |
104 | */ | |
105 | static uint16_t | |
106 | get_listener_port(const struct Listener *listener) | |
107 | { | |
108 | #ifdef RB_IPV6 | |
109 | if(listener->addr.ss_family == AF_INET6) | |
110 | return ntohs(((const struct sockaddr_in6 *)&listener->addr)->sin6_port); | |
111 | else | |
112 | #endif | |
113 | return ntohs(((const struct sockaddr_in *)&listener->addr)->sin_port); | |
114 | } | |
115 | ||
54ac8b60 VY |
116 | /* |
117 | * get_listener_name - return displayable listener name and port | |
118 | * returns "host.foo.org:6667" for a given listener | |
119 | */ | |
120 | const char * | |
8f103562 | 121 | get_listener_name(const struct Listener *listener) |
54ac8b60 VY |
122 | { |
123 | static char buf[HOSTLEN + HOSTLEN + PORTNAMELEN + 4]; | |
54ac8b60 VY |
124 | |
125 | s_assert(NULL != listener); | |
126 | if(listener == NULL) | |
127 | return NULL; | |
128 | ||
5203cba5 | 129 | snprintf(buf, sizeof(buf), "%s[%s/%u]", |
40173bcb | 130 | me.name, listener->name, get_listener_port(listener)); |
54ac8b60 VY |
131 | return buf; |
132 | } | |
133 | ||
134 | /* | |
135 | * show_ports - send port listing to a client | |
136 | * inputs - pointer to client to show ports to | |
137 | * output - none | |
138 | * side effects - show ports | |
139 | */ | |
140 | void | |
141 | show_ports(struct Client *source_p) | |
142 | { | |
8f103562 | 143 | struct Listener *listener = 0; |
54ac8b60 VY |
144 | |
145 | for (listener = ListenerPollList; listener; listener = listener->next) | |
146 | { | |
55abcbb2 | 147 | sendto_one_numeric(source_p, RPL_STATSPLINE, |
40173bcb JT |
148 | form_str(RPL_STATSPLINE), 'P', |
149 | get_listener_port(listener), | |
54ac8b60 | 150 | IsOperAdmin(source_p) ? listener->name : me.name, |
8bd5767b | 151 | listener->ref_count, (listener->active) ? "active" : "disabled", |
c6d72037 | 152 | listener->ssl ? " ssl" : ""); |
54ac8b60 VY |
153 | } |
154 | } | |
155 | ||
156 | /* | |
157 | * inetport - create a listener socket in the AF_INET or AF_INET6 domain, | |
158 | * bind it to the port given in 'port' and listen to it | |
159 | * returns true (1) if successful false (0) on error. | |
160 | * | |
161 | * If the operating system has a define for SOMAXCONN, use it, otherwise | |
638d2862 | 162 | * use CHARYBDIS_SOMAXCONN |
54ac8b60 VY |
163 | */ |
164 | #ifdef SOMAXCONN | |
638d2862 EM |
165 | #undef CHARYBDIS_SOMAXCONN |
166 | #define CHARYBDIS_SOMAXCONN SOMAXCONN | |
54ac8b60 VY |
167 | #endif |
168 | ||
169 | static int | |
8f103562 | 170 | inetport(struct Listener *listener) |
54ac8b60 | 171 | { |
f691939a | 172 | rb_fde_t *F; |
54ac8b60 | 173 | int opt = 1; |
40173bcb | 174 | const char *errstr; |
54ac8b60 VY |
175 | |
176 | /* | |
177 | * At first, open a new socket | |
178 | */ | |
55abcbb2 | 179 | |
f691939a | 180 | F = rb_socket(GET_SS_FAMILY(&listener->addr), SOCK_STREAM, 0, "Listener socket"); |
54ac8b60 | 181 | |
9ea3ea10 | 182 | #ifdef RB_IPV6 |
54ac8b60 VY |
183 | if(listener->addr.ss_family == AF_INET6) |
184 | { | |
185 | struct sockaddr_in6 *in6 = (struct sockaddr_in6 *)&listener->addr; | |
186 | if(!IN6_ARE_ADDR_EQUAL(&in6->sin6_addr, &in6addr_any)) | |
187 | { | |
caa4d9d2 | 188 | rb_inet_ntop(AF_INET6, &in6->sin6_addr, listener->vhost, sizeof(listener->vhost)); |
54ac8b60 VY |
189 | listener->name = listener->vhost; |
190 | } | |
191 | } else | |
192 | #endif | |
193 | { | |
194 | struct sockaddr_in *in = (struct sockaddr_in *)&listener->addr; | |
195 | if(in->sin_addr.s_addr != INADDR_ANY) | |
196 | { | |
caa4d9d2 | 197 | rb_inet_ntop(AF_INET, &in->sin_addr, listener->vhost, sizeof(listener->vhost)); |
54ac8b60 | 198 | listener->name = listener->vhost; |
55abcbb2 | 199 | } |
54ac8b60 VY |
200 | } |
201 | ||
1087485c JT |
202 | if(F == NULL) |
203 | { | |
40173bcb JT |
204 | sendto_realops_snomask(SNO_GENERAL, L_ALL, |
205 | "Cannot open socket for listener on port %d", | |
206 | get_listener_port(listener)); | |
207 | ilog(L_MAIN, "Cannot open socket for listener %s", | |
208 | get_listener_name(listener)); | |
1087485c JT |
209 | return 0; |
210 | } | |
211 | else if((maxconnections - 10) < rb_get_fd(F)) /* XXX this is kinda bogus*/ | |
212 | { | |
825ddf13 | 213 | ilog_error("no more connections left for listener"); |
40173bcb JT |
214 | sendto_realops_snomask(SNO_GENERAL, L_ALL, |
215 | "No more connections left for listener on port %d", | |
216 | get_listener_port(listener)); | |
217 | ilog(L_MAIN, "No more connections left for listener %s", | |
218 | get_listener_name(listener)); | |
1087485c JT |
219 | rb_close(F); |
220 | return 0; | |
54ac8b60 VY |
221 | } |
222 | ||
1087485c JT |
223 | /* |
224 | * XXX - we don't want to do all this crap for a listener | |
225 | * set_sock_opts(listener); | |
226 | */ | |
227 | if(setsockopt(rb_get_fd(F), SOL_SOCKET, SO_REUSEADDR, (char *) &opt, sizeof(opt))) | |
228 | { | |
40173bcb JT |
229 | errstr = strerror(rb_get_sockerr(F)); |
230 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
231 | "Cannot set SO_REUSEADDR for listener on port %d: %s", | |
232 | get_listener_port(listener), errstr); | |
233 | ilog(L_MAIN, "Cannot set SO_REUSEADDR for listener %s: %s", | |
234 | get_listener_name(listener), errstr); | |
1087485c JT |
235 | rb_close(F); |
236 | return 0; | |
54ac8b60 VY |
237 | } |
238 | ||
1087485c JT |
239 | /* |
240 | * Bind a port to listen for new connections if port is non-null, | |
241 | * else assume it is already open and try get something from it. | |
242 | */ | |
243 | ||
244 | if(bind(rb_get_fd(F), (struct sockaddr *) &listener->addr, GET_SS_LEN(&listener->addr))) | |
245 | { | |
40173bcb JT |
246 | errstr = strerror(rb_get_sockerr(F)); |
247 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
248 | "Cannot bind for listener on port %d: %s", | |
249 | get_listener_port(listener), errstr); | |
250 | ilog(L_MAIN, "Cannot bind for listener %s: %s", | |
251 | get_listener_name(listener), errstr); | |
1087485c JT |
252 | rb_close(F); |
253 | return 0; | |
54ac8b60 VY |
254 | } |
255 | ||
638d2862 | 256 | if(rb_listen(F, CHARYBDIS_SOMAXCONN, listener->defer_accept)) |
1087485c | 257 | { |
40173bcb JT |
258 | errstr = strerror(rb_get_sockerr(F)); |
259 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
260 | "Cannot listen() for listener on port %d: %s", | |
261 | get_listener_port(listener), errstr); | |
262 | ilog(L_MAIN, "Cannot listen() for listener %s: %s", | |
263 | get_listener_name(listener), errstr); | |
1087485c JT |
264 | rb_close(F); |
265 | return 0; | |
54ac8b60 VY |
266 | } |
267 | ||
1087485c JT |
268 | listener->F = F; |
269 | ||
f691939a | 270 | rb_accept_tcp(listener->F, accept_precallback, accept_callback, listener); |
54ac8b60 VY |
271 | return 1; |
272 | } | |
273 | ||
8f103562 | 274 | static struct Listener * |
e7046ee5 | 275 | find_listener(struct rb_sockaddr_storage *addr) |
54ac8b60 | 276 | { |
8f103562 JT |
277 | struct Listener *listener = NULL; |
278 | struct Listener *last_closed = NULL; | |
54ac8b60 VY |
279 | |
280 | for (listener = ListenerPollList; listener; listener = listener->next) | |
281 | { | |
282 | if(addr->ss_family != listener->addr.ss_family) | |
283 | continue; | |
55abcbb2 | 284 | |
54ac8b60 VY |
285 | switch(addr->ss_family) |
286 | { | |
287 | case AF_INET: | |
288 | { | |
289 | struct sockaddr_in *in4 = (struct sockaddr_in *)addr; | |
290 | struct sockaddr_in *lin4 = (struct sockaddr_in *)&listener->addr; | |
55abcbb2 | 291 | if(in4->sin_addr.s_addr == lin4->sin_addr.s_addr && |
54ac8b60 VY |
292 | in4->sin_port == lin4->sin_port ) |
293 | { | |
1087485c JT |
294 | if(listener->F == NULL) |
295 | last_closed = listener; | |
296 | else | |
54ac8b60 VY |
297 | return(listener); |
298 | } | |
299 | break; | |
300 | } | |
9ea3ea10 | 301 | #ifdef RB_IPV6 |
54ac8b60 VY |
302 | case AF_INET6: |
303 | { | |
304 | struct sockaddr_in6 *in6 = (struct sockaddr_in6 *)addr; | |
305 | struct sockaddr_in6 *lin6 =(struct sockaddr_in6 *)&listener->addr; | |
306 | if(IN6_ARE_ADDR_EQUAL(&in6->sin6_addr, &lin6->sin6_addr) && | |
307 | in6->sin6_port == lin6->sin6_port) | |
308 | { | |
1087485c JT |
309 | if(listener->F == NULL) |
310 | last_closed = listener; | |
311 | else | |
54ac8b60 VY |
312 | return(listener); |
313 | } | |
314 | break; | |
55abcbb2 | 315 | |
54ac8b60 VY |
316 | } |
317 | #endif | |
318 | ||
319 | default: | |
320 | break; | |
321 | } | |
322 | } | |
323 | return last_closed; | |
324 | } | |
325 | ||
326 | ||
327 | /* | |
328 | * add_listener- create a new listener | |
329 | * port - the port number to listen on | |
330 | * vhost_ip - if non-null must contain a valid IP address string in | |
331 | * the format "255.255.255.255" | |
332 | */ | |
333 | void | |
02270e96 | 334 | add_listener(int port, const char *vhost_ip, int family, int ssl, int defer_accept) |
54ac8b60 | 335 | { |
8f103562 | 336 | struct Listener *listener; |
e7046ee5 | 337 | struct rb_sockaddr_storage vaddr; |
54ac8b60 VY |
338 | |
339 | /* | |
340 | * if no port in conf line, don't bother | |
341 | */ | |
342 | if(port == 0) | |
343 | return; | |
344 | memset(&vaddr, 0, sizeof(vaddr)); | |
345 | vaddr.ss_family = family; | |
346 | ||
347 | if(vhost_ip != NULL) | |
348 | { | |
349 | if(family == AF_INET) | |
350 | { | |
caa4d9d2 | 351 | if(rb_inet_pton(family, vhost_ip, &((struct sockaddr_in *)&vaddr)->sin_addr) <= 0) |
54ac8b60 | 352 | return; |
55abcbb2 | 353 | } |
9ea3ea10 | 354 | #ifdef RB_IPV6 |
54ac8b60 VY |
355 | else |
356 | { | |
caa4d9d2 | 357 | if(rb_inet_pton(family, vhost_ip, &((struct sockaddr_in6 *)&vaddr)->sin6_addr) <= 0) |
54ac8b60 | 358 | return; |
55abcbb2 | 359 | |
54ac8b60 VY |
360 | } |
361 | #endif | |
362 | } else | |
363 | { | |
364 | switch(family) | |
365 | { | |
366 | case AF_INET: | |
367 | ((struct sockaddr_in *)&vaddr)->sin_addr.s_addr = INADDR_ANY; | |
368 | break; | |
9ea3ea10 | 369 | #ifdef RB_IPV6 |
54ac8b60 VY |
370 | case AF_INET6: |
371 | memcpy(&((struct sockaddr_in6 *)&vaddr)->sin6_addr, &in6addr_any, sizeof(struct in6_addr)); | |
372 | break; | |
373 | default: | |
374 | return; | |
375 | #endif | |
55abcbb2 | 376 | } |
54ac8b60 VY |
377 | } |
378 | switch(family) | |
379 | { | |
380 | case AF_INET: | |
99c4835f | 381 | SET_SS_LEN(&vaddr, sizeof(struct sockaddr_in)); |
54ac8b60 VY |
382 | ((struct sockaddr_in *)&vaddr)->sin_port = htons(port); |
383 | break; | |
9ea3ea10 | 384 | #ifdef RB_IPV6 |
54ac8b60 | 385 | case AF_INET6: |
99c4835f | 386 | SET_SS_LEN(&vaddr, sizeof(struct sockaddr_in6)); |
54ac8b60 VY |
387 | ((struct sockaddr_in6 *)&vaddr)->sin6_port = htons(port); |
388 | break; | |
389 | #endif | |
390 | default: | |
391 | break; | |
392 | } | |
393 | if((listener = find_listener(&vaddr))) | |
394 | { | |
1087485c | 395 | if(listener->F != NULL) |
54ac8b60 VY |
396 | return; |
397 | } | |
398 | else | |
399 | { | |
400 | listener = make_listener(&vaddr); | |
401 | listener->next = ListenerPollList; | |
402 | ListenerPollList = listener; | |
403 | } | |
404 | ||
f691939a | 405 | listener->F = NULL; |
c6d72037 | 406 | listener->ssl = ssl; |
02270e96 | 407 | listener->defer_accept = defer_accept; |
54ac8b60 VY |
408 | |
409 | if(inetport(listener)) | |
410 | listener->active = 1; | |
411 | else | |
412 | close_listener(listener); | |
413 | } | |
414 | ||
415 | /* | |
416 | * close_listener - close a single listener | |
417 | */ | |
418 | void | |
8f103562 | 419 | close_listener(struct Listener *listener) |
54ac8b60 VY |
420 | { |
421 | s_assert(listener != NULL); | |
422 | if(listener == NULL) | |
423 | return; | |
1087485c JT |
424 | if(listener->F != NULL) |
425 | { | |
426 | rb_close(listener->F); | |
427 | listener->F = NULL; | |
54ac8b60 VY |
428 | } |
429 | ||
430 | listener->active = 0; | |
431 | ||
432 | if(listener->ref_count) | |
433 | return; | |
434 | ||
435 | free_listener(listener); | |
436 | } | |
437 | ||
438 | /* | |
439 | * close_listeners - close and free all listeners that are not being used | |
440 | */ | |
441 | void | |
442 | close_listeners() | |
443 | { | |
8f103562 JT |
444 | struct Listener *listener; |
445 | struct Listener *listener_next = 0; | |
54ac8b60 VY |
446 | /* |
447 | * close all 'extra' listening ports we have | |
448 | */ | |
449 | for (listener = ListenerPollList; listener; listener = listener_next) | |
450 | { | |
451 | listener_next = listener->next; | |
452 | close_listener(listener); | |
453 | } | |
454 | } | |
455 | ||
456 | #define DLINE_WARNING "ERROR :You have been D-lined.\r\n" | |
457 | ||
458 | /* | |
55abcbb2 | 459 | * add_connection - creates a client which has just connected to us on |
54ac8b60 VY |
460 | * the given fd. The sockhost field is initialized with the ip# of the host. |
461 | * The client is sent to the auth module for verification, and not put in | |
462 | * any client list yet. | |
463 | */ | |
1087485c | 464 | static void |
b5b4a0e7 | 465 | add_connection(struct Listener *listener, rb_fde_t *F, struct sockaddr *sai, struct sockaddr *lai) |
54ac8b60 VY |
466 | { |
467 | struct Client *new_client; | |
468 | s_assert(NULL != listener); | |
469 | ||
55abcbb2 | 470 | /* |
54ac8b60 VY |
471 | * get the client socket name from the socket |
472 | * the client has already been checked out in accept_connection | |
473 | */ | |
474 | new_client = make_client(NULL); | |
475 | ||
b5b4a0e7 AC |
476 | if (listener->ssl) |
477 | { | |
478 | rb_fde_t *xF[2]; | |
479 | if(rb_socketpair(AF_UNIX, SOCK_STREAM, 0, &xF[0], &xF[1], "Incoming ssld Connection") == -1) | |
480 | { | |
481 | free_client(new_client); | |
482 | return; | |
483 | } | |
484 | new_client->localClient->ssl_ctl = start_ssld_accept(F, xF[1], new_client->localClient->connid); /* this will close F for us */ | |
485 | if(new_client->localClient->ssl_ctl == NULL) | |
486 | { | |
487 | free_client(new_client); | |
488 | return; | |
489 | } | |
490 | F = xF[0]; | |
491 | SetSSL(new_client); | |
492 | } | |
493 | ||
e7046ee5 | 494 | memcpy(&new_client->localClient->ip, sai, sizeof(struct rb_sockaddr_storage)); |
3540120a | 495 | memcpy(&new_client->preClient->lip, lai, sizeof(struct rb_sockaddr_storage)); |
54ac8b60 | 496 | |
55abcbb2 | 497 | /* |
54ac8b60 VY |
498 | * copy address to 'sockhost' as a string, copy it to host too |
499 | * so we have something valid to put into error messages... | |
500 | */ | |
55abcbb2 | 501 | rb_inet_ntop_sock((struct sockaddr *)&new_client->localClient->ip, new_client->sockhost, |
54ac8b60 VY |
502 | sizeof(new_client->sockhost)); |
503 | ||
504 | ||
f427c8b0 | 505 | rb_strlcpy(new_client->host, new_client->sockhost, sizeof(new_client->host)); |
54ac8b60 | 506 | |
99c4835f | 507 | new_client->localClient->F = F; |
54ac8b60 | 508 | new_client->localClient->listener = listener; |
c6d72037 | 509 | |
54ac8b60 VY |
510 | ++listener->ref_count; |
511 | ||
54ac8b60 VY |
512 | start_auth(new_client); |
513 | } | |
0d89d5cd | 514 | |
43946961 JT |
515 | static const char *toofast = "ERROR :Reconnecting too fast, throttled.\r\n"; |
516 | ||
1087485c JT |
517 | static int |
518 | accept_precallback(rb_fde_t *F, struct sockaddr *addr, rb_socklen_t addrlen, void *data) | |
519 | { | |
520 | struct Listener *listener = (struct Listener *)data; | |
521 | char buf[BUFSIZE]; | |
522 | struct ConfItem *aconf; | |
523 | static time_t last_oper_notice = 0; | |
b52c2949 | 524 | int len; |
1087485c | 525 | |
8bd5767b JT |
526 | if(listener->ssl && (!ssl_ok || !get_ssld_count())) |
527 | { | |
528 | rb_close(F); | |
529 | return 0; | |
c6d72037 VY |
530 | } |
531 | ||
1087485c JT |
532 | if((maxconnections - 10) < rb_get_fd(F)) /* XXX this is kinda bogus */ |
533 | { | |
47adde3d | 534 | ++ServerStats.is_ref; |
1087485c JT |
535 | /* |
536 | * slow down the whining to opers bit | |
537 | */ | |
538 | if((last_oper_notice + 20) <= rb_current_time()) | |
539 | { | |
26716d6d | 540 | sendto_realops_snomask(SNO_GENERAL, L_ALL, |
1087485c JT |
541 | "All connections in use. (%s)", |
542 | get_listener_name(listener)); | |
543 | last_oper_notice = rb_current_time(); | |
544 | } | |
55abcbb2 | 545 | |
76d82c19 | 546 | rb_write(F, "ERROR :All connections in use\r\n", 31); |
1087485c | 547 | rb_close(F); |
1087485c JT |
548 | return 0; |
549 | } | |
550 | ||
41d7fefa | 551 | aconf = find_dline(addr, addr->sa_family); |
1087485c JT |
552 | if(aconf != NULL && (aconf->status & CONF_EXEMPTDLINE)) |
553 | return 1; | |
55abcbb2 | 554 | |
1087485c JT |
555 | /* Do an initial check we aren't connecting too fast or with too many |
556 | * from this IP... */ | |
557 | if(aconf != NULL) | |
558 | { | |
47adde3d | 559 | ServerStats.is_ref++; |
55abcbb2 | 560 | |
1087485c JT |
561 | if(ConfigFileEntry.dline_with_reason) |
562 | { | |
5203cba5 | 563 | len = snprintf(buf, sizeof(buf), "ERROR :*** Banned: %s\r\n", get_user_ban_reason(aconf)); |
b52c2949 | 564 | if (len >= (int)(sizeof(buf)-1)) |
1087485c JT |
565 | { |
566 | buf[sizeof(buf) - 3] = '\r'; | |
567 | buf[sizeof(buf) - 2] = '\n'; | |
568 | buf[sizeof(buf) - 1] = '\0'; | |
569 | } | |
570 | } | |
571 | else | |
572 | strcpy(buf, "ERROR :You have been D-lined.\r\n"); | |
55abcbb2 | 573 | |
1087485c JT |
574 | rb_write(F, buf, strlen(buf)); |
575 | rb_close(F); | |
576 | return 0; | |
577 | } | |
578 | ||
43946961 JT |
579 | if(check_reject(F, addr)) |
580 | return 0; | |
55abcbb2 | 581 | |
43946961 JT |
582 | if(throttle_add(addr)) |
583 | { | |
584 | rb_write(F, toofast, strlen(toofast)); | |
585 | rb_close(F); | |
586 | return 0; | |
587 | } | |
588 | ||
1087485c JT |
589 | return 1; |
590 | } | |
591 | ||
592 | static void | |
593 | accept_callback(rb_fde_t *F, int status, struct sockaddr *addr, rb_socklen_t addrlen, void *data) | |
594 | { | |
595 | struct Listener *listener = data; | |
596 | struct rb_sockaddr_storage lip; | |
597 | unsigned int locallen = sizeof(struct rb_sockaddr_storage); | |
55abcbb2 | 598 | |
47adde3d | 599 | ServerStats.is_ac++; |
1087485c JT |
600 | |
601 | if(getsockname(rb_get_fd(F), (struct sockaddr *) &lip, &locallen) < 0) | |
602 | { | |
d60a42a2 | 603 | /* this can fail if the connection disappeared in the meantime */ |
1087485c | 604 | rb_close(F); |
9692f954 | 605 | return; |
1087485c | 606 | } |
55abcbb2 | 607 | |
b5b4a0e7 | 608 | add_connection(listener, F, addr, (struct sockaddr *)&lip); |
0d89d5cd | 609 | } |