]>
Commit | Line | Data |
---|---|---|
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" | |
d3f6b808 | 37 | #include "authd.h" |
54ac8b60 VY |
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 | { | |
d86692fa | 108 | return ntohs(GET_SS_PORT(&listener->addr)); |
40173bcb JT |
109 | } |
110 | ||
54ac8b60 VY |
111 | /* |
112 | * get_listener_name - return displayable listener name and port | |
113 | * returns "host.foo.org:6667" for a given listener | |
114 | */ | |
115 | const char * | |
8f103562 | 116 | get_listener_name(const struct Listener *listener) |
54ac8b60 VY |
117 | { |
118 | static char buf[HOSTLEN + HOSTLEN + PORTNAMELEN + 4]; | |
54ac8b60 VY |
119 | |
120 | s_assert(NULL != listener); | |
121 | if(listener == NULL) | |
122 | return NULL; | |
123 | ||
5203cba5 | 124 | snprintf(buf, sizeof(buf), "%s[%s/%u]", |
40173bcb | 125 | me.name, listener->name, get_listener_port(listener)); |
54ac8b60 VY |
126 | return buf; |
127 | } | |
128 | ||
129 | /* | |
130 | * show_ports - send port listing to a client | |
131 | * inputs - pointer to client to show ports to | |
132 | * output - none | |
133 | * side effects - show ports | |
134 | */ | |
135 | void | |
136 | show_ports(struct Client *source_p) | |
137 | { | |
8f103562 | 138 | struct Listener *listener = 0; |
54ac8b60 VY |
139 | |
140 | for (listener = ListenerPollList; listener; listener = listener->next) | |
141 | { | |
55abcbb2 | 142 | sendto_one_numeric(source_p, RPL_STATSPLINE, |
40173bcb JT |
143 | form_str(RPL_STATSPLINE), 'P', |
144 | get_listener_port(listener), | |
54ac8b60 | 145 | IsOperAdmin(source_p) ? listener->name : me.name, |
8bd5767b | 146 | listener->ref_count, (listener->active) ? "active" : "disabled", |
c6d72037 | 147 | listener->ssl ? " ssl" : ""); |
54ac8b60 VY |
148 | } |
149 | } | |
150 | ||
151 | /* | |
152 | * inetport - create a listener socket in the AF_INET or AF_INET6 domain, | |
153 | * bind it to the port given in 'port' and listen to it | |
154 | * returns true (1) if successful false (0) on error. | |
155 | * | |
156 | * If the operating system has a define for SOMAXCONN, use it, otherwise | |
638d2862 | 157 | * use CHARYBDIS_SOMAXCONN |
54ac8b60 VY |
158 | */ |
159 | #ifdef SOMAXCONN | |
638d2862 EM |
160 | #undef CHARYBDIS_SOMAXCONN |
161 | #define CHARYBDIS_SOMAXCONN SOMAXCONN | |
54ac8b60 VY |
162 | #endif |
163 | ||
164 | static int | |
8f103562 | 165 | inetport(struct Listener *listener) |
54ac8b60 | 166 | { |
f691939a | 167 | rb_fde_t *F; |
54ac8b60 | 168 | int opt = 1; |
40173bcb | 169 | const char *errstr; |
54ac8b60 VY |
170 | |
171 | /* | |
172 | * At first, open a new socket | |
173 | */ | |
55abcbb2 | 174 | |
f691939a | 175 | F = rb_socket(GET_SS_FAMILY(&listener->addr), SOCK_STREAM, 0, "Listener socket"); |
54ac8b60 | 176 | |
9ea3ea10 | 177 | #ifdef RB_IPV6 |
e867208d | 178 | if(GET_SS_FAMILY(&listener->addr) == AF_INET6) |
54ac8b60 VY |
179 | { |
180 | struct sockaddr_in6 *in6 = (struct sockaddr_in6 *)&listener->addr; | |
181 | if(!IN6_ARE_ADDR_EQUAL(&in6->sin6_addr, &in6addr_any)) | |
182 | { | |
caa4d9d2 | 183 | rb_inet_ntop(AF_INET6, &in6->sin6_addr, listener->vhost, sizeof(listener->vhost)); |
54ac8b60 VY |
184 | listener->name = listener->vhost; |
185 | } | |
186 | } else | |
187 | #endif | |
188 | { | |
189 | struct sockaddr_in *in = (struct sockaddr_in *)&listener->addr; | |
190 | if(in->sin_addr.s_addr != INADDR_ANY) | |
191 | { | |
caa4d9d2 | 192 | rb_inet_ntop(AF_INET, &in->sin_addr, listener->vhost, sizeof(listener->vhost)); |
54ac8b60 | 193 | listener->name = listener->vhost; |
55abcbb2 | 194 | } |
54ac8b60 VY |
195 | } |
196 | ||
1087485c JT |
197 | if(F == NULL) |
198 | { | |
40173bcb JT |
199 | sendto_realops_snomask(SNO_GENERAL, L_ALL, |
200 | "Cannot open socket for listener on port %d", | |
201 | get_listener_port(listener)); | |
202 | ilog(L_MAIN, "Cannot open socket for listener %s", | |
203 | get_listener_name(listener)); | |
1087485c JT |
204 | return 0; |
205 | } | |
206 | else if((maxconnections - 10) < rb_get_fd(F)) /* XXX this is kinda bogus*/ | |
207 | { | |
825ddf13 | 208 | ilog_error("no more connections left for listener"); |
40173bcb JT |
209 | sendto_realops_snomask(SNO_GENERAL, L_ALL, |
210 | "No more connections left for listener on port %d", | |
211 | get_listener_port(listener)); | |
212 | ilog(L_MAIN, "No more connections left for listener %s", | |
213 | get_listener_name(listener)); | |
1087485c JT |
214 | rb_close(F); |
215 | return 0; | |
54ac8b60 VY |
216 | } |
217 | ||
1087485c JT |
218 | /* |
219 | * XXX - we don't want to do all this crap for a listener | |
220 | * set_sock_opts(listener); | |
bf3ecca2 EM |
221 | * |
222 | * FIXME - doesn't this belong in librb? --Elizafox | |
1087485c JT |
223 | */ |
224 | if(setsockopt(rb_get_fd(F), SOL_SOCKET, SO_REUSEADDR, (char *) &opt, sizeof(opt))) | |
225 | { | |
40173bcb JT |
226 | errstr = strerror(rb_get_sockerr(F)); |
227 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
228 | "Cannot set SO_REUSEADDR for listener on port %d: %s", | |
229 | get_listener_port(listener), errstr); | |
230 | ilog(L_MAIN, "Cannot set SO_REUSEADDR for listener %s: %s", | |
231 | get_listener_name(listener), errstr); | |
1087485c JT |
232 | rb_close(F); |
233 | return 0; | |
54ac8b60 VY |
234 | } |
235 | ||
bf3ecca2 | 236 | /* FIXME - doesn't this belong in librb? --Elizafox */ |
1087485c JT |
237 | if(bind(rb_get_fd(F), (struct sockaddr *) &listener->addr, GET_SS_LEN(&listener->addr))) |
238 | { | |
40173bcb JT |
239 | errstr = strerror(rb_get_sockerr(F)); |
240 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
241 | "Cannot bind for listener on port %d: %s", | |
242 | get_listener_port(listener), errstr); | |
243 | ilog(L_MAIN, "Cannot bind for listener %s: %s", | |
244 | get_listener_name(listener), errstr); | |
1087485c JT |
245 | rb_close(F); |
246 | return 0; | |
54ac8b60 VY |
247 | } |
248 | ||
638d2862 | 249 | if(rb_listen(F, CHARYBDIS_SOMAXCONN, listener->defer_accept)) |
1087485c | 250 | { |
40173bcb JT |
251 | errstr = strerror(rb_get_sockerr(F)); |
252 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
253 | "Cannot listen() for listener on port %d: %s", | |
254 | get_listener_port(listener), errstr); | |
255 | ilog(L_MAIN, "Cannot listen() for listener %s: %s", | |
256 | get_listener_name(listener), errstr); | |
1087485c JT |
257 | rb_close(F); |
258 | return 0; | |
54ac8b60 VY |
259 | } |
260 | ||
1087485c JT |
261 | listener->F = F; |
262 | ||
f691939a | 263 | rb_accept_tcp(listener->F, accept_precallback, accept_callback, listener); |
54ac8b60 VY |
264 | return 1; |
265 | } | |
266 | ||
8f103562 | 267 | static struct Listener * |
e7046ee5 | 268 | find_listener(struct rb_sockaddr_storage *addr) |
54ac8b60 | 269 | { |
8f103562 JT |
270 | struct Listener *listener = NULL; |
271 | struct Listener *last_closed = NULL; | |
54ac8b60 VY |
272 | |
273 | for (listener = ListenerPollList; listener; listener = listener->next) | |
274 | { | |
e867208d | 275 | if(GET_SS_FAMILY(addr) != GET_SS_FAMILY(&listener->addr)) |
54ac8b60 | 276 | continue; |
55abcbb2 | 277 | |
a7fb2693 | 278 | switch(GET_SS_FAMILY(addr)) |
54ac8b60 VY |
279 | { |
280 | case AF_INET: | |
281 | { | |
282 | struct sockaddr_in *in4 = (struct sockaddr_in *)addr; | |
283 | struct sockaddr_in *lin4 = (struct sockaddr_in *)&listener->addr; | |
55abcbb2 | 284 | if(in4->sin_addr.s_addr == lin4->sin_addr.s_addr && |
54ac8b60 VY |
285 | in4->sin_port == lin4->sin_port ) |
286 | { | |
1087485c JT |
287 | if(listener->F == NULL) |
288 | last_closed = listener; | |
289 | else | |
54ac8b60 VY |
290 | return(listener); |
291 | } | |
292 | break; | |
293 | } | |
9ea3ea10 | 294 | #ifdef RB_IPV6 |
54ac8b60 VY |
295 | case AF_INET6: |
296 | { | |
297 | struct sockaddr_in6 *in6 = (struct sockaddr_in6 *)addr; | |
298 | struct sockaddr_in6 *lin6 =(struct sockaddr_in6 *)&listener->addr; | |
299 | if(IN6_ARE_ADDR_EQUAL(&in6->sin6_addr, &lin6->sin6_addr) && | |
300 | in6->sin6_port == lin6->sin6_port) | |
301 | { | |
1087485c JT |
302 | if(listener->F == NULL) |
303 | last_closed = listener; | |
304 | else | |
54ac8b60 VY |
305 | return(listener); |
306 | } | |
307 | break; | |
55abcbb2 | 308 | |
54ac8b60 VY |
309 | } |
310 | #endif | |
311 | ||
312 | default: | |
313 | break; | |
314 | } | |
315 | } | |
316 | return last_closed; | |
317 | } | |
318 | ||
319 | ||
320 | /* | |
321 | * add_listener- create a new listener | |
322 | * port - the port number to listen on | |
323 | * vhost_ip - if non-null must contain a valid IP address string in | |
324 | * the format "255.255.255.255" | |
325 | */ | |
326 | void | |
02270e96 | 327 | add_listener(int port, const char *vhost_ip, int family, int ssl, int defer_accept) |
54ac8b60 | 328 | { |
8f103562 | 329 | struct Listener *listener; |
e7046ee5 | 330 | struct rb_sockaddr_storage vaddr; |
54ac8b60 VY |
331 | |
332 | /* | |
333 | * if no port in conf line, don't bother | |
334 | */ | |
335 | if(port == 0) | |
336 | return; | |
337 | memset(&vaddr, 0, sizeof(vaddr)); | |
e867208d | 338 | SET_SS_FAMILY(&vaddr, family); |
54ac8b60 VY |
339 | |
340 | if(vhost_ip != NULL) | |
341 | { | |
342 | if(family == AF_INET) | |
343 | { | |
caa4d9d2 | 344 | if(rb_inet_pton(family, vhost_ip, &((struct sockaddr_in *)&vaddr)->sin_addr) <= 0) |
54ac8b60 | 345 | return; |
55abcbb2 | 346 | } |
9ea3ea10 | 347 | #ifdef RB_IPV6 |
54ac8b60 VY |
348 | else |
349 | { | |
caa4d9d2 | 350 | if(rb_inet_pton(family, vhost_ip, &((struct sockaddr_in6 *)&vaddr)->sin6_addr) <= 0) |
54ac8b60 | 351 | return; |
55abcbb2 | 352 | |
54ac8b60 VY |
353 | } |
354 | #endif | |
355 | } else | |
356 | { | |
357 | switch(family) | |
358 | { | |
359 | case AF_INET: | |
360 | ((struct sockaddr_in *)&vaddr)->sin_addr.s_addr = INADDR_ANY; | |
361 | break; | |
9ea3ea10 | 362 | #ifdef RB_IPV6 |
54ac8b60 VY |
363 | case AF_INET6: |
364 | memcpy(&((struct sockaddr_in6 *)&vaddr)->sin6_addr, &in6addr_any, sizeof(struct in6_addr)); | |
365 | break; | |
366 | default: | |
367 | return; | |
368 | #endif | |
55abcbb2 | 369 | } |
54ac8b60 VY |
370 | } |
371 | switch(family) | |
372 | { | |
373 | case AF_INET: | |
99c4835f | 374 | SET_SS_LEN(&vaddr, sizeof(struct sockaddr_in)); |
d86692fa EM |
375 | SET_SS_FAMILY(&vaddr, AF_INET); |
376 | SET_SS_PORT(&vaddr, htons(port)); | |
54ac8b60 | 377 | break; |
9ea3ea10 | 378 | #ifdef RB_IPV6 |
54ac8b60 | 379 | case AF_INET6: |
99c4835f | 380 | SET_SS_LEN(&vaddr, sizeof(struct sockaddr_in6)); |
d86692fa EM |
381 | SET_SS_FAMILY(&vaddr, AF_INET6); |
382 | SET_SS_PORT(&vaddr, htons(port)); | |
54ac8b60 VY |
383 | break; |
384 | #endif | |
385 | default: | |
386 | break; | |
387 | } | |
388 | if((listener = find_listener(&vaddr))) | |
389 | { | |
1087485c | 390 | if(listener->F != NULL) |
54ac8b60 VY |
391 | return; |
392 | } | |
393 | else | |
394 | { | |
395 | listener = make_listener(&vaddr); | |
396 | listener->next = ListenerPollList; | |
397 | ListenerPollList = listener; | |
398 | } | |
399 | ||
f691939a | 400 | listener->F = NULL; |
c6d72037 | 401 | listener->ssl = ssl; |
02270e96 | 402 | listener->defer_accept = defer_accept; |
54ac8b60 VY |
403 | |
404 | if(inetport(listener)) | |
405 | listener->active = 1; | |
406 | else | |
407 | close_listener(listener); | |
408 | } | |
409 | ||
410 | /* | |
411 | * close_listener - close a single listener | |
412 | */ | |
413 | void | |
8f103562 | 414 | close_listener(struct Listener *listener) |
54ac8b60 VY |
415 | { |
416 | s_assert(listener != NULL); | |
417 | if(listener == NULL) | |
418 | return; | |
1087485c JT |
419 | if(listener->F != NULL) |
420 | { | |
421 | rb_close(listener->F); | |
422 | listener->F = NULL; | |
54ac8b60 VY |
423 | } |
424 | ||
425 | listener->active = 0; | |
426 | ||
427 | if(listener->ref_count) | |
428 | return; | |
429 | ||
430 | free_listener(listener); | |
431 | } | |
432 | ||
433 | /* | |
434 | * close_listeners - close and free all listeners that are not being used | |
435 | */ | |
436 | void | |
437 | close_listeners() | |
438 | { | |
8f103562 JT |
439 | struct Listener *listener; |
440 | struct Listener *listener_next = 0; | |
54ac8b60 VY |
441 | /* |
442 | * close all 'extra' listening ports we have | |
443 | */ | |
444 | for (listener = ListenerPollList; listener; listener = listener_next) | |
445 | { | |
446 | listener_next = listener->next; | |
447 | close_listener(listener); | |
448 | } | |
449 | } | |
450 | ||
451 | #define DLINE_WARNING "ERROR :You have been D-lined.\r\n" | |
452 | ||
453 | /* | |
55abcbb2 | 454 | * add_connection - creates a client which has just connected to us on |
54ac8b60 VY |
455 | * the given fd. The sockhost field is initialized with the ip# of the host. |
456 | * The client is sent to the auth module for verification, and not put in | |
457 | * any client list yet. | |
458 | */ | |
1087485c | 459 | static void |
b5b4a0e7 | 460 | add_connection(struct Listener *listener, rb_fde_t *F, struct sockaddr *sai, struct sockaddr *lai) |
54ac8b60 VY |
461 | { |
462 | struct Client *new_client; | |
463 | s_assert(NULL != listener); | |
464 | ||
55abcbb2 | 465 | /* |
54ac8b60 VY |
466 | * get the client socket name from the socket |
467 | * the client has already been checked out in accept_connection | |
468 | */ | |
469 | new_client = make_client(NULL); | |
470 | ||
b5b4a0e7 AC |
471 | if (listener->ssl) |
472 | { | |
473 | rb_fde_t *xF[2]; | |
474 | if(rb_socketpair(AF_UNIX, SOCK_STREAM, 0, &xF[0], &xF[1], "Incoming ssld Connection") == -1) | |
475 | { | |
476 | free_client(new_client); | |
477 | return; | |
478 | } | |
de7cf7e0 | 479 | new_client->localClient->ssl_ctl = start_ssld_accept(F, xF[1], connid_get(new_client)); /* this will close F for us */ |
b5b4a0e7 AC |
480 | if(new_client->localClient->ssl_ctl == NULL) |
481 | { | |
482 | free_client(new_client); | |
483 | return; | |
484 | } | |
485 | F = xF[0]; | |
486 | SetSSL(new_client); | |
487 | } | |
488 | ||
e7046ee5 | 489 | memcpy(&new_client->localClient->ip, sai, sizeof(struct rb_sockaddr_storage)); |
3540120a | 490 | memcpy(&new_client->preClient->lip, lai, sizeof(struct rb_sockaddr_storage)); |
54ac8b60 | 491 | |
55abcbb2 | 492 | /* |
54ac8b60 VY |
493 | * copy address to 'sockhost' as a string, copy it to host too |
494 | * so we have something valid to put into error messages... | |
495 | */ | |
55abcbb2 | 496 | rb_inet_ntop_sock((struct sockaddr *)&new_client->localClient->ip, new_client->sockhost, |
54ac8b60 VY |
497 | sizeof(new_client->sockhost)); |
498 | ||
499 | ||
f427c8b0 | 500 | rb_strlcpy(new_client->host, new_client->sockhost, sizeof(new_client->host)); |
54ac8b60 | 501 | |
99c4835f | 502 | new_client->localClient->F = F; |
54ac8b60 | 503 | new_client->localClient->listener = listener; |
c6d72037 | 504 | |
54ac8b60 VY |
505 | ++listener->ref_count; |
506 | ||
d3f6b808 | 507 | authd_initiate_client(new_client); |
54ac8b60 | 508 | } |
0d89d5cd | 509 | |
43946961 JT |
510 | static const char *toofast = "ERROR :Reconnecting too fast, throttled.\r\n"; |
511 | ||
1087485c JT |
512 | static int |
513 | accept_precallback(rb_fde_t *F, struct sockaddr *addr, rb_socklen_t addrlen, void *data) | |
514 | { | |
515 | struct Listener *listener = (struct Listener *)data; | |
516 | char buf[BUFSIZE]; | |
517 | struct ConfItem *aconf; | |
518 | static time_t last_oper_notice = 0; | |
b52c2949 | 519 | int len; |
1087485c | 520 | |
bfc44622 | 521 | if(listener->ssl && (!ircd_ssl_ok || !get_ssld_count())) |
8bd5767b JT |
522 | { |
523 | rb_close(F); | |
524 | return 0; | |
c6d72037 VY |
525 | } |
526 | ||
1087485c JT |
527 | if((maxconnections - 10) < rb_get_fd(F)) /* XXX this is kinda bogus */ |
528 | { | |
47adde3d | 529 | ++ServerStats.is_ref; |
1087485c JT |
530 | /* |
531 | * slow down the whining to opers bit | |
532 | */ | |
533 | if((last_oper_notice + 20) <= rb_current_time()) | |
534 | { | |
26716d6d | 535 | sendto_realops_snomask(SNO_GENERAL, L_ALL, |
1087485c JT |
536 | "All connections in use. (%s)", |
537 | get_listener_name(listener)); | |
538 | last_oper_notice = rb_current_time(); | |
539 | } | |
55abcbb2 | 540 | |
76d82c19 | 541 | rb_write(F, "ERROR :All connections in use\r\n", 31); |
1087485c | 542 | rb_close(F); |
1087485c JT |
543 | return 0; |
544 | } | |
545 | ||
41d7fefa | 546 | aconf = find_dline(addr, addr->sa_family); |
1087485c JT |
547 | if(aconf != NULL && (aconf->status & CONF_EXEMPTDLINE)) |
548 | return 1; | |
55abcbb2 | 549 | |
1087485c JT |
550 | /* Do an initial check we aren't connecting too fast or with too many |
551 | * from this IP... */ | |
552 | if(aconf != NULL) | |
553 | { | |
47adde3d | 554 | ServerStats.is_ref++; |
55abcbb2 | 555 | |
1087485c JT |
556 | if(ConfigFileEntry.dline_with_reason) |
557 | { | |
5203cba5 | 558 | len = snprintf(buf, sizeof(buf), "ERROR :*** Banned: %s\r\n", get_user_ban_reason(aconf)); |
b52c2949 | 559 | if (len >= (int)(sizeof(buf)-1)) |
1087485c JT |
560 | { |
561 | buf[sizeof(buf) - 3] = '\r'; | |
562 | buf[sizeof(buf) - 2] = '\n'; | |
563 | buf[sizeof(buf) - 1] = '\0'; | |
564 | } | |
565 | } | |
566 | else | |
567 | strcpy(buf, "ERROR :You have been D-lined.\r\n"); | |
55abcbb2 | 568 | |
1087485c JT |
569 | rb_write(F, buf, strlen(buf)); |
570 | rb_close(F); | |
571 | return 0; | |
572 | } | |
573 | ||
43946961 JT |
574 | if(check_reject(F, addr)) |
575 | return 0; | |
55abcbb2 | 576 | |
43946961 JT |
577 | if(throttle_add(addr)) |
578 | { | |
579 | rb_write(F, toofast, strlen(toofast)); | |
580 | rb_close(F); | |
581 | return 0; | |
582 | } | |
583 | ||
1087485c JT |
584 | return 1; |
585 | } | |
586 | ||
587 | static void | |
588 | accept_callback(rb_fde_t *F, int status, struct sockaddr *addr, rb_socklen_t addrlen, void *data) | |
589 | { | |
590 | struct Listener *listener = data; | |
591 | struct rb_sockaddr_storage lip; | |
592 | unsigned int locallen = sizeof(struct rb_sockaddr_storage); | |
55abcbb2 | 593 | |
47adde3d | 594 | ServerStats.is_ac++; |
1087485c JT |
595 | |
596 | if(getsockname(rb_get_fd(F), (struct sockaddr *) &lip, &locallen) < 0) | |
597 | { | |
d60a42a2 | 598 | /* this can fail if the connection disappeared in the meantime */ |
1087485c | 599 | rb_close(F); |
9692f954 | 600 | return; |
1087485c | 601 | } |
55abcbb2 | 602 | |
b5b4a0e7 | 603 | add_connection(listener, F, addr, (struct sockaddr *)&lip); |
0d89d5cd | 604 | } |