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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" | |
64fae260 | 37 | #include "authproc.h" |
54ac8b60 VY |
38 | #include "reject.h" |
39 | #include "s_conf.h" | |
40 | #include "hostmask.h" | |
c6d72037 | 41 | #include "sslproc.h" |
c53ca1e0 | 42 | #include "wsproc.h" |
c6d72037 | 43 | #include "hash.h" |
77d3d2db KB |
44 | #include "s_assert.h" |
45 | #include "logger.h" | |
54ac8b60 VY |
46 | |
47 | #ifndef INADDR_NONE | |
48 | #define INADDR_NONE ((unsigned int) 0xffffffff) | |
49 | #endif | |
50 | ||
9ea3ea10 | 51 | #if defined(NO_IN6ADDR_ANY) && defined(RB_IPV6) |
54ac8b60 VY |
52 | static const struct in6_addr in6addr_any = |
53 | { { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } } }; | |
55abcbb2 | 54 | #endif |
54ac8b60 | 55 | |
8f103562 | 56 | static struct Listener *ListenerPollList = NULL; |
1087485c | 57 | static int accept_precallback(rb_fde_t *F, struct sockaddr *addr, rb_socklen_t addrlen, void *data); |
8e09c4a2 | 58 | static void accept_callback(rb_fde_t *F, int status, struct sockaddr *addr, rb_socklen_t addrlen, void *data); |
54ac8b60 | 59 | |
8f103562 | 60 | static struct Listener * |
e7046ee5 | 61 | make_listener(struct rb_sockaddr_storage *addr) |
54ac8b60 | 62 | { |
8f103562 | 63 | struct Listener *listener = (struct Listener *) rb_malloc(sizeof(struct Listener)); |
54ac8b60 | 64 | s_assert(0 != listener); |
54ac8b60 | 65 | listener->name = me.name; |
f691939a VY |
66 | listener->F = NULL; |
67 | ||
e7046ee5 | 68 | memcpy(&listener->addr, addr, sizeof(struct rb_sockaddr_storage)); |
54ac8b60 VY |
69 | listener->next = NULL; |
70 | return listener; | |
71 | } | |
72 | ||
73 | void | |
8f103562 | 74 | free_listener(struct Listener *listener) |
54ac8b60 VY |
75 | { |
76 | s_assert(NULL != listener); | |
77 | if(listener == NULL) | |
78 | return; | |
79 | /* | |
80 | * remove from listener list | |
81 | */ | |
82 | if(listener == ListenerPollList) | |
83 | ListenerPollList = listener->next; | |
84 | else | |
85 | { | |
8f103562 | 86 | struct Listener *prev = ListenerPollList; |
54ac8b60 VY |
87 | for (; prev; prev = prev->next) |
88 | { | |
89 | if(listener == prev->next) | |
90 | { | |
91 | prev->next = listener->next; | |
92 | break; | |
93 | } | |
94 | } | |
95 | } | |
96 | ||
97 | /* free */ | |
98 | rb_free(listener); | |
99 | } | |
100 | ||
101 | #define PORTNAMELEN 6 /* ":31337" */ | |
102 | ||
40173bcb JT |
103 | /* |
104 | * get_listener_port - return displayable listener port | |
105 | */ | |
106 | static uint16_t | |
107 | get_listener_port(const struct Listener *listener) | |
108 | { | |
d86692fa | 109 | return ntohs(GET_SS_PORT(&listener->addr)); |
40173bcb JT |
110 | } |
111 | ||
54ac8b60 VY |
112 | /* |
113 | * get_listener_name - return displayable listener name and port | |
114 | * returns "host.foo.org:6667" for a given listener | |
115 | */ | |
116 | const char * | |
8f103562 | 117 | get_listener_name(const struct Listener *listener) |
54ac8b60 VY |
118 | { |
119 | static char buf[HOSTLEN + HOSTLEN + PORTNAMELEN + 4]; | |
54ac8b60 VY |
120 | |
121 | s_assert(NULL != listener); | |
122 | if(listener == NULL) | |
123 | return NULL; | |
124 | ||
5203cba5 | 125 | snprintf(buf, sizeof(buf), "%s[%s/%u]", |
40173bcb | 126 | me.name, listener->name, get_listener_port(listener)); |
54ac8b60 VY |
127 | return buf; |
128 | } | |
129 | ||
130 | /* | |
131 | * show_ports - send port listing to a client | |
132 | * inputs - pointer to client to show ports to | |
133 | * output - none | |
134 | * side effects - show ports | |
135 | */ | |
136 | void | |
137 | show_ports(struct Client *source_p) | |
138 | { | |
8f103562 | 139 | struct Listener *listener = 0; |
54ac8b60 VY |
140 | |
141 | for (listener = ListenerPollList; listener; listener = listener->next) | |
142 | { | |
55abcbb2 | 143 | sendto_one_numeric(source_p, RPL_STATSPLINE, |
40173bcb JT |
144 | form_str(RPL_STATSPLINE), 'P', |
145 | get_listener_port(listener), | |
54ac8b60 | 146 | IsOperAdmin(source_p) ? listener->name : me.name, |
8bd5767b | 147 | listener->ref_count, (listener->active) ? "active" : "disabled", |
c6d72037 | 148 | listener->ssl ? " ssl" : ""); |
54ac8b60 VY |
149 | } |
150 | } | |
151 | ||
152 | /* | |
153 | * inetport - create a listener socket in the AF_INET or AF_INET6 domain, | |
154 | * bind it to the port given in 'port' and listen to it | |
155 | * returns true (1) if successful false (0) on error. | |
54ac8b60 | 156 | */ |
54ac8b60 VY |
157 | |
158 | static int | |
8f103562 | 159 | inetport(struct Listener *listener) |
54ac8b60 | 160 | { |
f691939a | 161 | rb_fde_t *F; |
54ac8b60 | 162 | int opt = 1; |
40173bcb | 163 | const char *errstr; |
54ac8b60 VY |
164 | |
165 | /* | |
166 | * At first, open a new socket | |
167 | */ | |
55abcbb2 | 168 | |
f691939a | 169 | F = rb_socket(GET_SS_FAMILY(&listener->addr), SOCK_STREAM, 0, "Listener socket"); |
54ac8b60 | 170 | |
9ea3ea10 | 171 | #ifdef RB_IPV6 |
e867208d | 172 | if(GET_SS_FAMILY(&listener->addr) == AF_INET6) |
54ac8b60 VY |
173 | { |
174 | struct sockaddr_in6 *in6 = (struct sockaddr_in6 *)&listener->addr; | |
175 | if(!IN6_ARE_ADDR_EQUAL(&in6->sin6_addr, &in6addr_any)) | |
176 | { | |
caa4d9d2 | 177 | rb_inet_ntop(AF_INET6, &in6->sin6_addr, listener->vhost, sizeof(listener->vhost)); |
54ac8b60 VY |
178 | listener->name = listener->vhost; |
179 | } | |
180 | } else | |
181 | #endif | |
182 | { | |
183 | struct sockaddr_in *in = (struct sockaddr_in *)&listener->addr; | |
184 | if(in->sin_addr.s_addr != INADDR_ANY) | |
185 | { | |
caa4d9d2 | 186 | rb_inet_ntop(AF_INET, &in->sin_addr, listener->vhost, sizeof(listener->vhost)); |
54ac8b60 | 187 | listener->name = listener->vhost; |
55abcbb2 | 188 | } |
54ac8b60 VY |
189 | } |
190 | ||
1087485c JT |
191 | if(F == NULL) |
192 | { | |
40173bcb JT |
193 | sendto_realops_snomask(SNO_GENERAL, L_ALL, |
194 | "Cannot open socket for listener on port %d", | |
195 | get_listener_port(listener)); | |
196 | ilog(L_MAIN, "Cannot open socket for listener %s", | |
197 | get_listener_name(listener)); | |
1087485c JT |
198 | return 0; |
199 | } | |
200 | else if((maxconnections - 10) < rb_get_fd(F)) /* XXX this is kinda bogus*/ | |
201 | { | |
825ddf13 | 202 | ilog_error("no more connections left for listener"); |
40173bcb JT |
203 | sendto_realops_snomask(SNO_GENERAL, L_ALL, |
204 | "No more connections left for listener on port %d", | |
205 | get_listener_port(listener)); | |
206 | ilog(L_MAIN, "No more connections left for listener %s", | |
207 | get_listener_name(listener)); | |
1087485c JT |
208 | rb_close(F); |
209 | return 0; | |
54ac8b60 VY |
210 | } |
211 | ||
1087485c JT |
212 | /* |
213 | * XXX - we don't want to do all this crap for a listener | |
214 | * set_sock_opts(listener); | |
bf3ecca2 EM |
215 | * |
216 | * FIXME - doesn't this belong in librb? --Elizafox | |
1087485c JT |
217 | */ |
218 | if(setsockopt(rb_get_fd(F), SOL_SOCKET, SO_REUSEADDR, (char *) &opt, sizeof(opt))) | |
219 | { | |
40173bcb JT |
220 | errstr = strerror(rb_get_sockerr(F)); |
221 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
222 | "Cannot set SO_REUSEADDR for listener on port %d: %s", | |
223 | get_listener_port(listener), errstr); | |
224 | ilog(L_MAIN, "Cannot set SO_REUSEADDR for listener %s: %s", | |
225 | get_listener_name(listener), errstr); | |
1087485c JT |
226 | rb_close(F); |
227 | return 0; | |
54ac8b60 VY |
228 | } |
229 | ||
bf3ecca2 | 230 | /* FIXME - doesn't this belong in librb? --Elizafox */ |
1087485c JT |
231 | if(bind(rb_get_fd(F), (struct sockaddr *) &listener->addr, GET_SS_LEN(&listener->addr))) |
232 | { | |
40173bcb JT |
233 | errstr = strerror(rb_get_sockerr(F)); |
234 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
235 | "Cannot bind for listener on port %d: %s", | |
236 | get_listener_port(listener), errstr); | |
237 | ilog(L_MAIN, "Cannot bind for listener %s: %s", | |
238 | get_listener_name(listener), errstr); | |
1087485c JT |
239 | rb_close(F); |
240 | return 0; | |
54ac8b60 VY |
241 | } |
242 | ||
9057170c | 243 | if(rb_listen(F, SOMAXCONN, listener->defer_accept)) |
1087485c | 244 | { |
40173bcb JT |
245 | errstr = strerror(rb_get_sockerr(F)); |
246 | sendto_realops_snomask(SNO_GENERAL, L_ALL, | |
247 | "Cannot listen() for listener on port %d: %s", | |
248 | get_listener_port(listener), errstr); | |
249 | ilog(L_MAIN, "Cannot listen() for listener %s: %s", | |
250 | get_listener_name(listener), errstr); | |
1087485c JT |
251 | rb_close(F); |
252 | return 0; | |
54ac8b60 VY |
253 | } |
254 | ||
1087485c JT |
255 | listener->F = F; |
256 | ||
f691939a | 257 | rb_accept_tcp(listener->F, accept_precallback, accept_callback, listener); |
54ac8b60 VY |
258 | return 1; |
259 | } | |
260 | ||
8f103562 | 261 | static struct Listener * |
e7046ee5 | 262 | find_listener(struct rb_sockaddr_storage *addr) |
54ac8b60 | 263 | { |
8f103562 JT |
264 | struct Listener *listener = NULL; |
265 | struct Listener *last_closed = NULL; | |
54ac8b60 VY |
266 | |
267 | for (listener = ListenerPollList; listener; listener = listener->next) | |
268 | { | |
e867208d | 269 | if(GET_SS_FAMILY(addr) != GET_SS_FAMILY(&listener->addr)) |
54ac8b60 | 270 | continue; |
55abcbb2 | 271 | |
a7fb2693 | 272 | switch(GET_SS_FAMILY(addr)) |
54ac8b60 VY |
273 | { |
274 | case AF_INET: | |
275 | { | |
276 | struct sockaddr_in *in4 = (struct sockaddr_in *)addr; | |
277 | struct sockaddr_in *lin4 = (struct sockaddr_in *)&listener->addr; | |
55abcbb2 | 278 | if(in4->sin_addr.s_addr == lin4->sin_addr.s_addr && |
54ac8b60 VY |
279 | in4->sin_port == lin4->sin_port ) |
280 | { | |
1087485c JT |
281 | if(listener->F == NULL) |
282 | last_closed = listener; | |
283 | else | |
54ac8b60 VY |
284 | return(listener); |
285 | } | |
286 | break; | |
287 | } | |
9ea3ea10 | 288 | #ifdef RB_IPV6 |
54ac8b60 VY |
289 | case AF_INET6: |
290 | { | |
291 | struct sockaddr_in6 *in6 = (struct sockaddr_in6 *)addr; | |
292 | struct sockaddr_in6 *lin6 =(struct sockaddr_in6 *)&listener->addr; | |
293 | if(IN6_ARE_ADDR_EQUAL(&in6->sin6_addr, &lin6->sin6_addr) && | |
294 | in6->sin6_port == lin6->sin6_port) | |
295 | { | |
1087485c JT |
296 | if(listener->F == NULL) |
297 | last_closed = listener; | |
298 | else | |
54ac8b60 VY |
299 | return(listener); |
300 | } | |
301 | break; | |
55abcbb2 | 302 | |
54ac8b60 VY |
303 | } |
304 | #endif | |
305 | ||
306 | default: | |
307 | break; | |
308 | } | |
309 | } | |
310 | return last_closed; | |
311 | } | |
312 | ||
313 | ||
314 | /* | |
315 | * add_listener- create a new listener | |
316 | * port - the port number to listen on | |
317 | * vhost_ip - if non-null must contain a valid IP address string in | |
318 | * the format "255.255.255.255" | |
319 | */ | |
320 | void | |
c53ca1e0 | 321 | add_listener(int port, const char *vhost_ip, int family, int ssl, int defer_accept, int wsock) |
54ac8b60 | 322 | { |
8f103562 | 323 | struct Listener *listener; |
e7046ee5 | 324 | struct rb_sockaddr_storage vaddr; |
54ac8b60 VY |
325 | |
326 | /* | |
327 | * if no port in conf line, don't bother | |
328 | */ | |
329 | if(port == 0) | |
330 | return; | |
331 | memset(&vaddr, 0, sizeof(vaddr)); | |
e867208d | 332 | SET_SS_FAMILY(&vaddr, family); |
54ac8b60 VY |
333 | |
334 | if(vhost_ip != NULL) | |
335 | { | |
336 | if(family == AF_INET) | |
337 | { | |
caa4d9d2 | 338 | if(rb_inet_pton(family, vhost_ip, &((struct sockaddr_in *)&vaddr)->sin_addr) <= 0) |
54ac8b60 | 339 | return; |
55abcbb2 | 340 | } |
9ea3ea10 | 341 | #ifdef RB_IPV6 |
54ac8b60 VY |
342 | else |
343 | { | |
caa4d9d2 | 344 | if(rb_inet_pton(family, vhost_ip, &((struct sockaddr_in6 *)&vaddr)->sin6_addr) <= 0) |
54ac8b60 | 345 | return; |
55abcbb2 | 346 | |
54ac8b60 VY |
347 | } |
348 | #endif | |
349 | } else | |
350 | { | |
351 | switch(family) | |
352 | { | |
353 | case AF_INET: | |
354 | ((struct sockaddr_in *)&vaddr)->sin_addr.s_addr = INADDR_ANY; | |
355 | break; | |
9ea3ea10 | 356 | #ifdef RB_IPV6 |
54ac8b60 VY |
357 | case AF_INET6: |
358 | memcpy(&((struct sockaddr_in6 *)&vaddr)->sin6_addr, &in6addr_any, sizeof(struct in6_addr)); | |
359 | break; | |
360 | default: | |
361 | return; | |
362 | #endif | |
55abcbb2 | 363 | } |
54ac8b60 VY |
364 | } |
365 | switch(family) | |
366 | { | |
367 | case AF_INET: | |
99c4835f | 368 | SET_SS_LEN(&vaddr, sizeof(struct sockaddr_in)); |
d86692fa EM |
369 | SET_SS_FAMILY(&vaddr, AF_INET); |
370 | SET_SS_PORT(&vaddr, htons(port)); | |
54ac8b60 | 371 | break; |
9ea3ea10 | 372 | #ifdef RB_IPV6 |
54ac8b60 | 373 | case AF_INET6: |
99c4835f | 374 | SET_SS_LEN(&vaddr, sizeof(struct sockaddr_in6)); |
d86692fa EM |
375 | SET_SS_FAMILY(&vaddr, AF_INET6); |
376 | SET_SS_PORT(&vaddr, htons(port)); | |
54ac8b60 VY |
377 | break; |
378 | #endif | |
379 | default: | |
380 | break; | |
381 | } | |
382 | if((listener = find_listener(&vaddr))) | |
383 | { | |
1087485c | 384 | if(listener->F != NULL) |
54ac8b60 VY |
385 | return; |
386 | } | |
387 | else | |
388 | { | |
389 | listener = make_listener(&vaddr); | |
390 | listener->next = ListenerPollList; | |
391 | ListenerPollList = listener; | |
392 | } | |
393 | ||
f691939a | 394 | listener->F = NULL; |
c6d72037 | 395 | listener->ssl = ssl; |
02270e96 | 396 | listener->defer_accept = defer_accept; |
c53ca1e0 | 397 | listener->wsock = wsock; |
54ac8b60 VY |
398 | |
399 | if(inetport(listener)) | |
400 | listener->active = 1; | |
401 | else | |
402 | close_listener(listener); | |
403 | } | |
404 | ||
405 | /* | |
406 | * close_listener - close a single listener | |
407 | */ | |
408 | void | |
8f103562 | 409 | close_listener(struct Listener *listener) |
54ac8b60 VY |
410 | { |
411 | s_assert(listener != NULL); | |
412 | if(listener == NULL) | |
413 | return; | |
1087485c JT |
414 | if(listener->F != NULL) |
415 | { | |
416 | rb_close(listener->F); | |
417 | listener->F = NULL; | |
54ac8b60 VY |
418 | } |
419 | ||
420 | listener->active = 0; | |
421 | ||
422 | if(listener->ref_count) | |
423 | return; | |
424 | ||
425 | free_listener(listener); | |
426 | } | |
427 | ||
428 | /* | |
429 | * close_listeners - close and free all listeners that are not being used | |
430 | */ | |
431 | void | |
432 | close_listeners() | |
433 | { | |
8f103562 JT |
434 | struct Listener *listener; |
435 | struct Listener *listener_next = 0; | |
54ac8b60 VY |
436 | /* |
437 | * close all 'extra' listening ports we have | |
438 | */ | |
439 | for (listener = ListenerPollList; listener; listener = listener_next) | |
440 | { | |
441 | listener_next = listener->next; | |
442 | close_listener(listener); | |
443 | } | |
444 | } | |
445 | ||
446 | #define DLINE_WARNING "ERROR :You have been D-lined.\r\n" | |
447 | ||
448 | /* | |
55abcbb2 | 449 | * add_connection - creates a client which has just connected to us on |
54ac8b60 VY |
450 | * the given fd. The sockhost field is initialized with the ip# of the host. |
451 | * The client is sent to the auth module for verification, and not put in | |
452 | * any client list yet. | |
453 | */ | |
1087485c | 454 | static void |
b5b4a0e7 | 455 | add_connection(struct Listener *listener, rb_fde_t *F, struct sockaddr *sai, struct sockaddr *lai) |
54ac8b60 VY |
456 | { |
457 | struct Client *new_client; | |
458 | s_assert(NULL != listener); | |
459 | ||
55abcbb2 | 460 | /* |
54ac8b60 VY |
461 | * get the client socket name from the socket |
462 | * the client has already been checked out in accept_connection | |
463 | */ | |
464 | new_client = make_client(NULL); | |
465 | ||
b5b4a0e7 AC |
466 | if (listener->ssl) |
467 | { | |
468 | rb_fde_t *xF[2]; | |
469 | if(rb_socketpair(AF_UNIX, SOCK_STREAM, 0, &xF[0], &xF[1], "Incoming ssld Connection") == -1) | |
470 | { | |
471 | free_client(new_client); | |
472 | return; | |
473 | } | |
de7cf7e0 | 474 | new_client->localClient->ssl_ctl = start_ssld_accept(F, xF[1], connid_get(new_client)); /* this will close F for us */ |
b5b4a0e7 AC |
475 | if(new_client->localClient->ssl_ctl == NULL) |
476 | { | |
477 | free_client(new_client); | |
478 | return; | |
479 | } | |
480 | F = xF[0]; | |
481 | SetSSL(new_client); | |
482 | } | |
483 | ||
c53ca1e0 AC |
484 | if (listener->wsock) |
485 | { | |
486 | rb_fde_t *xF[2]; | |
487 | if(rb_socketpair(AF_UNIX, SOCK_STREAM, 0, &xF[0], &xF[1], "Incoming wsockd Connection") == -1) | |
488 | { | |
489 | free_client(new_client); | |
490 | return; | |
491 | } | |
492 | new_client->localClient->ws_ctl = start_wsockd_accept(F, xF[1], connid_get(new_client)); /* this will close F for us */ | |
493 | if(new_client->localClient->ws_ctl == NULL) | |
494 | { | |
495 | free_client(new_client); | |
496 | return; | |
497 | } | |
498 | F = xF[0]; | |
499 | } | |
500 | ||
e7046ee5 | 501 | memcpy(&new_client->localClient->ip, sai, sizeof(struct rb_sockaddr_storage)); |
3540120a | 502 | memcpy(&new_client->preClient->lip, lai, sizeof(struct rb_sockaddr_storage)); |
54ac8b60 | 503 | |
55abcbb2 | 504 | /* |
54ac8b60 VY |
505 | * copy address to 'sockhost' as a string, copy it to host too |
506 | * so we have something valid to put into error messages... | |
507 | */ | |
55abcbb2 | 508 | rb_inet_ntop_sock((struct sockaddr *)&new_client->localClient->ip, new_client->sockhost, |
54ac8b60 VY |
509 | sizeof(new_client->sockhost)); |
510 | ||
511 | ||
f427c8b0 | 512 | rb_strlcpy(new_client->host, new_client->sockhost, sizeof(new_client->host)); |
54ac8b60 | 513 | |
99c4835f | 514 | new_client->localClient->F = F; |
54ac8b60 | 515 | new_client->localClient->listener = listener; |
c6d72037 | 516 | |
54ac8b60 VY |
517 | ++listener->ref_count; |
518 | ||
d3f6b808 | 519 | authd_initiate_client(new_client); |
54ac8b60 | 520 | } |
0d89d5cd | 521 | |
43946961 JT |
522 | static const char *toofast = "ERROR :Reconnecting too fast, throttled.\r\n"; |
523 | ||
1087485c JT |
524 | static int |
525 | accept_precallback(rb_fde_t *F, struct sockaddr *addr, rb_socklen_t addrlen, void *data) | |
526 | { | |
527 | struct Listener *listener = (struct Listener *)data; | |
528 | char buf[BUFSIZE]; | |
529 | struct ConfItem *aconf; | |
530 | static time_t last_oper_notice = 0; | |
b52c2949 | 531 | int len; |
1087485c | 532 | |
bfc44622 | 533 | if(listener->ssl && (!ircd_ssl_ok || !get_ssld_count())) |
8bd5767b JT |
534 | { |
535 | rb_close(F); | |
536 | return 0; | |
c6d72037 VY |
537 | } |
538 | ||
1087485c JT |
539 | if((maxconnections - 10) < rb_get_fd(F)) /* XXX this is kinda bogus */ |
540 | { | |
47adde3d | 541 | ++ServerStats.is_ref; |
1087485c JT |
542 | /* |
543 | * slow down the whining to opers bit | |
544 | */ | |
545 | if((last_oper_notice + 20) <= rb_current_time()) | |
546 | { | |
26716d6d | 547 | sendto_realops_snomask(SNO_GENERAL, L_ALL, |
1087485c JT |
548 | "All connections in use. (%s)", |
549 | get_listener_name(listener)); | |
550 | last_oper_notice = rb_current_time(); | |
551 | } | |
55abcbb2 | 552 | |
76d82c19 | 553 | rb_write(F, "ERROR :All connections in use\r\n", 31); |
1087485c | 554 | rb_close(F); |
1087485c JT |
555 | return 0; |
556 | } | |
557 | ||
41d7fefa | 558 | aconf = find_dline(addr, addr->sa_family); |
1087485c JT |
559 | if(aconf != NULL && (aconf->status & CONF_EXEMPTDLINE)) |
560 | return 1; | |
55abcbb2 | 561 | |
1087485c JT |
562 | /* Do an initial check we aren't connecting too fast or with too many |
563 | * from this IP... */ | |
564 | if(aconf != NULL) | |
565 | { | |
47adde3d | 566 | ServerStats.is_ref++; |
55abcbb2 | 567 | |
1087485c JT |
568 | if(ConfigFileEntry.dline_with_reason) |
569 | { | |
5203cba5 | 570 | len = snprintf(buf, sizeof(buf), "ERROR :*** Banned: %s\r\n", get_user_ban_reason(aconf)); |
b52c2949 | 571 | if (len >= (int)(sizeof(buf)-1)) |
1087485c JT |
572 | { |
573 | buf[sizeof(buf) - 3] = '\r'; | |
574 | buf[sizeof(buf) - 2] = '\n'; | |
575 | buf[sizeof(buf) - 1] = '\0'; | |
576 | } | |
577 | } | |
578 | else | |
579 | strcpy(buf, "ERROR :You have been D-lined.\r\n"); | |
55abcbb2 | 580 | |
1087485c JT |
581 | rb_write(F, buf, strlen(buf)); |
582 | rb_close(F); | |
583 | return 0; | |
584 | } | |
585 | ||
43946961 JT |
586 | if(check_reject(F, addr)) |
587 | return 0; | |
55abcbb2 | 588 | |
43946961 JT |
589 | if(throttle_add(addr)) |
590 | { | |
591 | rb_write(F, toofast, strlen(toofast)); | |
592 | rb_close(F); | |
593 | return 0; | |
594 | } | |
595 | ||
1087485c JT |
596 | return 1; |
597 | } | |
598 | ||
599 | static void | |
600 | accept_callback(rb_fde_t *F, int status, struct sockaddr *addr, rb_socklen_t addrlen, void *data) | |
601 | { | |
602 | struct Listener *listener = data; | |
603 | struct rb_sockaddr_storage lip; | |
604 | unsigned int locallen = sizeof(struct rb_sockaddr_storage); | |
55abcbb2 | 605 | |
47adde3d | 606 | ServerStats.is_ac++; |
1087485c JT |
607 | |
608 | if(getsockname(rb_get_fd(F), (struct sockaddr *) &lip, &locallen) < 0) | |
609 | { | |
d60a42a2 | 610 | /* this can fail if the connection disappeared in the meantime */ |
1087485c | 611 | rb_close(F); |
9692f954 | 612 | return; |
1087485c | 613 | } |
55abcbb2 | 614 | |
b5b4a0e7 | 615 | add_connection(listener, F, addr, (struct sockaddr *)&lip); |
0d89d5cd | 616 | } |