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root/svn/ircd-hybrid-7.2/src/send.c
Revision: 34
Committed: Sun Oct 2 21:05:51 2005 UTC (18 years, 5 months ago) by lusky
Content type: text/x-csrc
File size: 33727 byte(s)
Log Message:
create 7.2 branch, we can move/rename it as needed.


File Contents

# Content
1 /*
2 * ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
3 * send.c: Functions for sending messages.
4 *
5 * Copyright (C) 2002 by the past and present ircd coders, and others.
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
20 * USA
21 *
22 * $Id$
23 */
24
25 #include "stdinc.h"
26 #include "tools.h"
27 #include "send.h"
28 #include "channel.h"
29 #include "client.h"
30 #include "common.h"
31 #include "dbuf.h"
32 #include "irc_string.h"
33 #include "ircd.h"
34 #include "handlers.h"
35 #include "numeric.h"
36 #include "fdlist.h"
37 #include "s_bsd.h"
38 #include "s_serv.h"
39 #include "sprintf_irc.h"
40 #include "s_conf.h"
41 #include "list.h"
42 #include "s_log.h"
43 #include "memory.h"
44 #include "hook.h"
45 #include "irc_getnameinfo.h"
46 #include "packet.h"
47
48 #define LOG_BUFSIZE 2048
49
50 struct Callback *iosend_cb = NULL;
51 struct Callback *iosendctrl_cb = NULL;
52
53 static void send_message(struct Client *, char *, int);
54 static void send_message_remote(struct Client *, struct Client *, char *, int);
55
56 static unsigned long current_serial = 0L;
57
58 /* send_format()
59 *
60 * inputs - buffer to format into
61 * - size of the buffer
62 * - format pattern to use
63 * - var args
64 * output - number of bytes formatted output
65 * side effects - modifies sendbuf
66 */
67 static inline int
68 send_format(char *lsendbuf, int bufsize, const char *pattern, va_list args)
69 {
70 int len;
71
72 /*
73 * from rfc1459
74 *
75 * IRC messages are always lines of characters terminated with a CR-LF
76 * (Carriage Return - Line Feed) pair, and these messages shall not
77 * exceed 512 characters in length, counting all characters
78 * including the trailing CR-LF.
79 * Thus, there are 510 characters maximum allowed
80 * for the command and its parameters. There is no provision for
81 * continuation message lines. See section 7 for more details about
82 * current implementations.
83 */
84 len = vsnprintf(lsendbuf, bufsize - 1, pattern, args);
85 if (len > bufsize - 2)
86 len = bufsize - 2; /* required by some versions of vsnprintf */
87
88 lsendbuf[len++] = '\r';
89 lsendbuf[len++] = '\n';
90 return (len);
91 }
92
93 /*
94 ** send_message
95 ** Internal utility which appends given buffer to the sockets
96 ** sendq.
97 */
98 static void
99 send_message(struct Client *to, char *buf, int len)
100 {
101 #ifdef INVARIANTS
102 if (IsMe(to))
103 {
104 sendto_realops_flags(UMODE_ALL, L_ALL,
105 "Trying to send message to myself!");
106 return;
107 }
108 #endif
109
110 if (dbuf_length(&to->localClient->buf_sendq) + len > get_sendq(to))
111 {
112 if (IsServer(to))
113 sendto_realops_flags(UMODE_ALL, L_ALL,
114 "Max SendQ limit exceeded for %s: %lu > %lu",
115 get_client_name(to, HIDE_IP),
116 (unsigned long)(dbuf_length(&to->localClient->buf_sendq) + len),
117 get_sendq(to));
118 if (IsClient(to))
119 SetSendQExceeded(to);
120 dead_link_on_write(to, 0);
121 return;
122 }
123
124 dbuf_put(&to->localClient->buf_sendq, buf, len);
125
126 /*
127 ** Update statistics. The following is slightly incorrect
128 ** because it counts messages even if queued, but bytes
129 ** only really sent. Queued bytes get updated in SendQueued.
130 */
131 ++to->localClient->send.messages;
132 ++me.localClient->send.messages;
133
134 if (dbuf_length(&to->localClient->buf_sendq) >
135 (IsServer(to) ? (unsigned int) 1024 : (unsigned int) 4096))
136 send_queued_write(to);
137 }
138
139 /* send_message_remote()
140 *
141 * inputs - pointer to client from message is being sent
142 * - pointer to client to send to
143 * - pointer to preformatted buffer
144 * - length of input buffer
145 * output - none
146 * side effects - Despite the function name, this only sends to directly
147 * connected clients.
148 *
149 */
150 static void
151 send_message_remote(struct Client *to, struct Client *from,
152 char *buf, int len)
153 {
154 if (!MyConnect(to))
155 {
156 sendto_realops_flags(UMODE_ALL, L_ALL,
157 "server send message to %s [%s] dropped from %s(Not local server)",
158 to->name, to->from->name, from->name);
159 return;
160 }
161
162 if (ServerInfo.hub && IsCapable(to, CAP_LL))
163 {
164 if (((from->lazyLinkClientExists &
165 to->localClient->serverMask) == 0))
166 client_burst_if_needed(to, from);
167 }
168
169 /* Optimize by checking if (from && to) before everything */
170 /* we set to->from up there.. */
171
172 if (!MyClient(from) && IsClient(to) && (to == from->from))
173 {
174 if (IsServer(from))
175 {
176 sendto_realops_flags(UMODE_ALL, L_ALL,
177 "Send message to %s [%s] dropped from %s(Fake Dir)",
178 to->name, to->from->name, from->name);
179 return;
180 }
181
182 sendto_realops_flags(UMODE_ALL, L_ALL,
183 "Ghosted: %s[%s@%s] from %s[%s@%s] (%s)",
184 to->name, to->username, to->host,
185 from->name, from->username, from->host,
186 to->from->name);
187
188 sendto_server(NULL, to, NULL, CAP_TS6, NOCAPS, NOFLAGS,
189 ":%s KILL %s :%s (%s[%s@%s] Ghosted %s)",
190 me.id, to->name, me.name, to->name,
191 to->username, to->host, to->from->name);
192 sendto_server(NULL, to, NULL, NOCAPS, CAP_TS6, NOFLAGS,
193 ":%s KILL %s :%s (%s[%s@%s] Ghosted %s)",
194 me.name, to->name, me.name, to->name,
195 to->username, to->host, to->from->name);
196
197 SetKilled(to);
198
199 if (IsClient(from))
200 sendto_one(from, form_str(ERR_GHOSTEDCLIENT),
201 me.name, from->name, to->name, to->username,
202 to->host, to->from);
203
204 exit_client(to, &me, "Ghosted client");
205
206 return;
207 }
208
209 send_message(to, buf, len);
210 }
211
212 /*
213 ** sendq_unblocked
214 ** Called when a socket is ready for writing.
215 */
216 void
217 sendq_unblocked(fde_t *fd, struct Client *client_p)
218 {
219 ClearSendqBlocked(client_p);
220 /* let send_queued_write be executed by send_queued_all */
221
222 #ifdef HAVE_LIBCRYPTO
223 if (fd->flags.pending_read)
224 {
225 fd->flags.pending_read = 0;
226 read_packet(fd, client_p);
227 }
228 #endif
229 }
230
231 /*
232 ** slinkq_unblocked
233 ** Called when a server control socket is ready for writing.
234 */
235 static void
236 slinkq_unblocked(fde_t *fd, struct Client *client_p)
237 {
238 ClearSlinkqBlocked(client_p);
239 send_queued_slink_write(client_p);
240 }
241
242 /*
243 ** send_queued_write
244 ** This is called when there is a chance that some output would
245 ** be possible. This attempts to empty the send queue as far as
246 ** possible, and then if any data is left, a write is rescheduled.
247 */
248 void
249 send_queued_write(struct Client *to)
250 {
251 int retlen;
252 struct dbuf_block *first;
253
254 /*
255 ** Once socket is marked dead, we cannot start writing to it,
256 ** even if the error is removed...
257 */
258 if (IsDead(to) || IsSendqBlocked(to))
259 return; /* no use calling send() now */
260
261 /* Next, lets try to write some data */
262
263 if (dbuf_length(&to->localClient->buf_sendq))
264 {
265 do {
266 first = to->localClient->buf_sendq.blocks.head->data;
267
268 #ifdef HAVE_LIBCRYPTO
269 if (to->localClient->fd.ssl)
270 {
271 retlen = SSL_write(to->localClient->fd.ssl, first->data, first->size);
272
273 /* translate openssl error codes, sigh */
274 if (retlen < 0)
275 switch (SSL_get_error(to->localClient->fd.ssl, retlen))
276 {
277 case SSL_ERROR_WANT_READ:
278 return; /* retry later, don't register for write events */
279
280 case SSL_ERROR_WANT_WRITE:
281 errno = EWOULDBLOCK;
282 case SSL_ERROR_SYSCALL:
283 break;
284
285 default:
286 retlen = errno = 0; /* either an SSL-specific error or EOF */
287 }
288 }
289 else
290 #endif
291 retlen = send(to->localClient->fd.fd, first->data, first->size, 0);
292
293 if (retlen <= 0)
294 {
295 #ifdef _WIN32
296 errno = WSAGetLastError();
297 #endif
298 break;
299 }
300
301 execute_callback(iosend_cb, to, retlen, first->data);
302 dbuf_delete(&to->localClient->buf_sendq, retlen);
303
304 /* We have some data written .. update counters */
305 to->localClient->send.bytes += retlen;
306 me.localClient->send.bytes += retlen;
307 } while (dbuf_length(&to->localClient->buf_sendq));
308
309 if ((retlen < 0) && (ignoreErrno(errno)))
310 {
311 /* we have a non-fatal error, reschedule a write */
312 SetSendqBlocked(to);
313 comm_setselect(&to->localClient->fd, COMM_SELECT_WRITE,
314 (PF *)sendq_unblocked, (void *)to, 0);
315 }
316 else if (retlen <= 0)
317 {
318 dead_link_on_write(to, errno);
319 return;
320 }
321 }
322 }
323
324 /*
325 ** send_queued_slink_write
326 ** This is called when there is a chance the some output would
327 ** be possible. This attempts to empty the send queue as far as
328 ** possible, and then if any data is left, a write is rescheduled.
329 */
330 void
331 send_queued_slink_write(struct Client *to)
332 {
333 int retlen;
334
335 /*
336 ** Once socket is marked dead, we cannot start writing to it,
337 ** even if the error is removed...
338 */
339 if (IsDead(to) || IsSlinkqBlocked(to))
340 return; /* no use calling send() now */
341
342 /* Next, lets try to write some data */
343 if (to->localClient->slinkq != NULL)
344 {
345 retlen = send(to->localClient->ctrlfd.fd,
346 to->localClient->slinkq + to->localClient->slinkq_ofs,
347 to->localClient->slinkq_len, 0);
348 if (retlen < 0)
349 {
350 /* If we have a fatal error */
351 if (!ignoreErrno(errno))
352 {
353 dead_link_on_write(to, errno);
354 return;
355 }
356 }
357 else if (retlen == 0)
358 {
359 /* 0 bytes is an EOF .. */
360 dead_link_on_write(to, 0);
361 return;
362 }
363 else
364 {
365 execute_callback(iosendctrl_cb, to, retlen,
366 to->localClient->slinkq + to->localClient->slinkq_ofs);
367 to->localClient->slinkq_len -= retlen;
368
369 assert(to->localClient->slinkq_len >= 0);
370 if (to->localClient->slinkq_len)
371 to->localClient->slinkq_ofs += retlen;
372 else
373 {
374 to->localClient->slinkq_ofs = 0;
375 MyFree(to->localClient->slinkq);
376 to->localClient->slinkq = NULL;
377 }
378 }
379
380 /* Finally, if we have any more data, reschedule a write */
381 if (to->localClient->slinkq_len)
382 {
383 SetSlinkqBlocked(to);
384 comm_setselect(&to->localClient->ctrlfd, COMM_SELECT_WRITE,
385 (PF *)slinkq_unblocked, (void *)to, 0);
386 }
387 }
388 }
389
390 /* send_queued_all()
391 *
392 * input - NONE
393 * output - NONE
394 * side effects - try to flush sendq of each client
395 */
396 void
397 send_queued_all(void)
398 {
399 dlink_node *ptr;
400
401 /* Servers are processed first, mainly because this can generate
402 * a notice to opers, which is to be delivered by this function.
403 */
404 DLINK_FOREACH(ptr, serv_list.head)
405 send_queued_write((struct Client *) ptr->data);
406
407 DLINK_FOREACH(ptr, unknown_list.head)
408 send_queued_write((struct Client *) ptr->data);
409
410 DLINK_FOREACH(ptr, local_client_list.head)
411 send_queued_write((struct Client *) ptr->data);
412
413 /* NOTE: This can still put clients on aborted_list; unfortunately,
414 * exit_aborted_clients takes precedence over send_queued_all,
415 * because exiting clients can generate server/oper traffic.
416 * The easiest approach is dealing with aborted clients in the next I/O lap.
417 * -adx
418 */
419 }
420
421 /* sendto_one()
422 *
423 * inputs - pointer to destination client
424 * - var args message
425 * output - NONE
426 * side effects - send message to single client
427 */
428 void
429 sendto_one(struct Client *to, const char *pattern, ...)
430 {
431 va_list args;
432 char buffer[IRCD_BUFSIZE];
433 int len;
434
435 if (to->from != NULL)
436 to = to->from;
437 if (IsDead(to))
438 return; /* This socket has already been marked as dead */
439
440 va_start(args, pattern);
441 len = send_format(buffer, IRCD_BUFSIZE, pattern, args);
442 va_end(args);
443
444 send_message(to, buffer, len);
445 }
446
447 /* sendto_channel_butone()
448 *
449 * inputs - pointer to client(server) to NOT send message to
450 * - pointer to client that is sending this message
451 * - pointer to channel being sent to
452 * - vargs message
453 * output - NONE
454 * side effects - message as given is sent to given channel members.
455 *
456 * WARNING - +D clients are ignored
457 */
458 void
459 sendto_channel_butone(struct Client *one, struct Client *from,
460 struct Channel *chptr, const char *command,
461 const char *pattern, ...)
462 {
463 va_list args;
464 char local_buf[IRCD_BUFSIZE];
465 char remote_buf[IRCD_BUFSIZE];
466 char uid_buf[IRCD_BUFSIZE];
467 int local_len, remote_len, uid_len;
468 dlink_node *ptr;
469 dlink_node *ptr_next;
470 struct Client *target_p;
471
472 if (IsServer(from))
473 local_len = ircsprintf(local_buf, ":%s %s %s ",
474 from->name, command, chptr->chname);
475 else
476 local_len = ircsprintf(local_buf, ":%s!%s@%s %s %s ",
477 from->name, from->username, from->host,
478 command, chptr->chname);
479 remote_len = ircsprintf(remote_buf, ":%s %s %s ",
480 from->name, command, chptr->chname);
481 uid_len = ircsprintf(uid_buf, ":%s %s %s ",
482 ID(from), command, chptr->chname);
483
484 va_start(args, pattern);
485 local_len += send_format(&local_buf[local_len], IRCD_BUFSIZE - local_len,
486 pattern, args);
487 remote_len += send_format(&remote_buf[remote_len], IRCD_BUFSIZE - remote_len,
488 pattern, args);
489 uid_len += send_format(&uid_buf[uid_len], IRCD_BUFSIZE - uid_len, pattern,
490 args);
491 va_end(args);
492
493 ++current_serial;
494
495 DLINK_FOREACH_SAFE(ptr, ptr_next, chptr->members.head)
496 {
497 target_p = ((struct Membership *)ptr->data)->client_p;
498 assert(target_p != NULL);
499
500 if (IsDefunct(target_p) || IsDeaf(target_p) || target_p->from == one)
501 continue;
502
503 if (MyClient(target_p))
504 {
505 if (target_p->serial != current_serial)
506 {
507 send_message(target_p, local_buf, local_len);
508 target_p->serial = current_serial;
509 }
510 }
511 else
512 {
513 /* Now check whether a message has been sent to this
514 * remote link already
515 */
516 if (target_p->from->serial != current_serial)
517 {
518 if (IsCapable(target_p->from, CAP_TS6))
519 send_message_remote(target_p->from, from, uid_buf, uid_len);
520 else
521 send_message_remote(target_p->from, from, remote_buf, remote_len);
522 target_p->from->serial = current_serial;
523 }
524 }
525 }
526 }
527
528 /* sendto_server()
529 *
530 * inputs - pointer to client to NOT send to
531 * - pointer to source client required by LL (if any)
532 * - pointer to channel required by LL (if any)
533 * - caps or'd together which must ALL be present
534 * - caps or'd together which must ALL NOT be present
535 * - LL flags: LL_ICLIENT | LL_ICHAN
536 * - printf style format string
537 * - args to format string
538 * output - NONE
539 * side effects - Send a message to all connected servers, except the
540 * client 'one' (if non-NULL), as long as the servers
541 * support ALL capabs in 'caps', and NO capabs in 'nocaps'.
542 * If the server is a lazylink client, then it must know
543 * about source_p if non-NULL (unless LL_ICLIENT is specified,
544 * when source_p will be introduced where required) and
545 * chptr if non-NULL (unless LL_ICHANNEL is specified, when
546 * chptr will be introduced where required).
547 * Note: nothing will be introduced to a LazyLeaf unless
548 * the message is actually sent.
549 *
550 * This function was written in an attempt to merge together the other
551 * billion sendto_*serv*() functions, which sprung up with capabs,
552 * lazylinks, uids, etc.
553 * -davidt
554 */
555 void
556 sendto_server(struct Client *one, struct Client *source_p,
557 struct Channel *chptr, unsigned long caps,
558 unsigned long nocaps, unsigned long llflags,
559 const char *format, ...)
560 {
561 va_list args;
562 struct Client *client_p;
563 dlink_node *ptr;
564 char buffer[IRCD_BUFSIZE];
565 int len;
566
567 if (chptr != NULL)
568 {
569 if (chptr->chname[0] != '#')
570 return;
571 }
572
573 va_start(args, format);
574 len = send_format(buffer, IRCD_BUFSIZE, format, args);
575 va_end(args);
576
577 DLINK_FOREACH(ptr, serv_list.head)
578 {
579 client_p = ptr->data;
580
581 /* If dead already skip */
582 if (IsDead(client_p))
583 continue;
584 /* check against 'one' */
585 if (one != NULL && (client_p == one->from))
586 continue;
587 /* check we have required capabs */
588 if ((client_p->localClient->caps & caps) != caps)
589 continue;
590 /* check we don't have any forbidden capabs */
591 if ((client_p->localClient->caps & nocaps) != 0)
592 continue;
593
594 if (ServerInfo.hub && IsCapable(client_p, CAP_LL))
595 {
596 /* check LL channel */
597 if (chptr != NULL &&
598 ((chptr->lazyLinkChannelExists &
599 client_p->localClient->serverMask) == 0))
600 {
601 /* Only introduce the channel if we really will send this message */
602 if (!(llflags & LL_ICLIENT) && source_p &&
603 ((source_p->lazyLinkClientExists &
604 client_p->localClient->serverMask) == 0))
605 continue; /* we can't introduce the unknown source_p, skip */
606
607 if (llflags & LL_ICHAN)
608 burst_channel(client_p, chptr);
609 else
610 continue; /* we can't introduce the unknown chptr, skip */
611 }
612 /* check LL client */
613 if (source_p &&
614 ((source_p->lazyLinkClientExists &
615 client_p->localClient->serverMask) == 0))
616 {
617 if (llflags & LL_ICLIENT)
618 client_burst_if_needed(client_p,source_p);
619 else
620 continue; /* we can't introduce the unknown source_p, skip */
621 }
622 }
623 send_message(client_p, buffer, len);
624 }
625 }
626
627 /* sendto_common_channels_local()
628 *
629 * inputs - pointer to client
630 * - pattern to send
631 * output - NONE
632 * side effects - Sends a message to all people on local server who are
633 * in same channel with user.
634 * used by m_nick.c and exit_one_client.
635 */
636 void
637 sendto_common_channels_local(struct Client *user, int touser,
638 const char *pattern, ...)
639 {
640 va_list args;
641 dlink_node *uptr;
642 dlink_node *cptr;
643 struct Channel *chptr;
644 struct Membership *ms;
645 struct Client *target_p;
646 char buffer[IRCD_BUFSIZE];
647 int len;
648
649 va_start(args, pattern);
650 len = send_format(buffer, IRCD_BUFSIZE, pattern, args);
651 va_end(args);
652
653 ++current_serial;
654
655 DLINK_FOREACH(cptr, user->channel.head)
656 {
657 chptr = ((struct Membership *) cptr->data)->chptr;
658 assert(chptr != NULL);
659
660 DLINK_FOREACH(uptr, chptr->locmembers.head)
661 {
662 ms = uptr->data;
663 target_p = ms->client_p;
664 assert(target_p != NULL);
665
666 if (target_p == user || IsDefunct(target_p) ||
667 target_p->serial == current_serial)
668 continue;
669
670 target_p->serial = current_serial;
671 send_message(target_p, buffer, len);
672 }
673 }
674
675 if (touser && MyConnect(user) && !IsDead(user) &&
676 user->serial != current_serial)
677 send_message(user, buffer, len);
678 }
679
680 /* sendto_channel_local()
681 *
682 * inputs - member status mask, e.g. CHFL_CHANOP | CHFL_VOICE
683 * - whether to ignore +D clients (YES/NO)
684 * - pointer to channel to send to
685 * - var args pattern
686 * output - NONE
687 * side effects - Send a message to all members of a channel that are
688 * locally connected to this server.
689 */
690 void
691 sendto_channel_local(int type, int nodeaf, struct Channel *chptr,
692 const char *pattern, ...)
693 {
694 va_list args;
695 char buffer[IRCD_BUFSIZE];
696 int len;
697 dlink_node *ptr;
698 struct Membership *ms;
699 struct Client *target_p;
700
701 va_start(args, pattern);
702 len = send_format(buffer, IRCD_BUFSIZE, pattern, args);
703 va_end(args);
704
705 DLINK_FOREACH(ptr, chptr->locmembers.head)
706 {
707 ms = ptr->data;
708 target_p = ms->client_p;
709
710 if (type != 0 && (ms->flags & type) == 0)
711 continue;
712
713 if (IsDefunct(target_p) || (nodeaf && IsDeaf(target_p)))
714 continue;
715
716 send_message(target_p, buffer, len);
717 }
718 }
719
720 /* sendto_channel_local_butone()
721 *
722 * inputs - pointer to client to NOT send message to
723 * - member status mask, e.g. CHFL_CHANOP | CHFL_VOICE
724 * - pointer to channel to send to
725 * - var args pattern
726 * output - NONE
727 * side effects - Send a message to all members of a channel that are
728 * locally connected to this server except one.
729 *
730 * WARNING - +D clients are omitted
731 */
732 void
733 sendto_channel_local_butone(struct Client *one, int type,
734 struct Channel *chptr, const char *pattern, ...)
735 {
736 va_list args;
737 char buffer[IRCD_BUFSIZE];
738 int len;
739 struct Client *target_p;
740 struct Membership *ms;
741 dlink_node *ptr;
742
743 va_start(args, pattern);
744 len = send_format(buffer, IRCD_BUFSIZE, pattern, args);
745 va_end(args);
746
747 DLINK_FOREACH(ptr, chptr->locmembers.head)
748 {
749 ms = ptr->data;
750 target_p = ms->client_p;
751
752 if (type != 0 && (ms->flags & type) == 0)
753 continue;
754
755 if (target_p == one || IsDefunct(target_p) || IsDeaf(target_p))
756 continue;
757 send_message(target_p, buffer, len);
758 }
759 }
760
761
762 /* sendto_channel_remote()
763 *
764 * inputs - Client not to send towards
765 * - Client from whom message is from
766 * - member status mask, e.g. CHFL_CHANOP | CHFL_VOICE
767 * - pointer to channel to send to
768 * - var args pattern
769 * output - NONE
770 * side effects - Send a message to all members of a channel that are
771 * remote to this server.
772 */
773 void
774 sendto_channel_remote(struct Client *one, struct Client *from, int type, int caps,
775 int nocaps, struct Channel *chptr, const char *pattern, ...)
776 {
777 va_list args;
778 char buffer[IRCD_BUFSIZE];
779 int len;
780 dlink_node *ptr;
781 struct Client *target_p;
782 struct Membership *ms;
783
784 va_start(args, pattern);
785 len = send_format(buffer, IRCD_BUFSIZE, pattern, args);
786 va_end(args);
787
788 DLINK_FOREACH(ptr, chptr->members.head)
789 {
790 ms = ptr->data;
791 target_p = ms->client_p;
792
793 if (type != 0 && (ms->flags & type) == 0)
794 continue;
795
796 if (MyConnect(target_p))
797 continue;
798 target_p = target_p->from;
799
800 if (target_p == one->from ||
801 ((target_p->from->localClient->caps & caps) != caps) ||
802 ((target_p->from->localClient->caps & nocaps) != 0))
803 continue;
804
805 send_message(target_p, buffer, len);
806 }
807 }
808
809 /*
810 ** match_it() and sendto_match_butone() ARE only used
811 ** to send a msg to all ppl on servers/hosts that match a specified mask
812 ** (used for enhanced PRIVMSGs) for opers
813 **
814 ** addition -- Armin, 8jun90 (gruner@informatik.tu-muenchen.de)
815 **
816 */
817
818 /* match_it()
819 *
820 * inputs - client pointer to match on
821 * - actual mask to match
822 * - what to match on, HOST or SERVER
823 * output - 1 or 0 if match or not
824 * side effects - NONE
825 */
826 static int
827 match_it(const struct Client *one, const char *mask, int what)
828 {
829 if (what == MATCH_HOST)
830 return(match(mask, one->host));
831
832 return(match(mask, one->servptr->name));
833 }
834
835 /* sendto_match_butone()
836 *
837 * Send to all clients which match the mask in a way defined on 'what';
838 * either by user hostname or user servername.
839 *
840 * ugh. ONLY used by m_message.c to send an "oper magic" message. ugh.
841 */
842 void
843 sendto_match_butone(struct Client *one, struct Client *from, char *mask,
844 int what, const char *pattern, ...)
845 {
846 va_list args;
847 struct Client *client_p;
848 dlink_node *ptr, *ptr_next;
849 char local_buf[IRCD_BUFSIZE], remote_buf[IRCD_BUFSIZE];
850 int local_len = ircsprintf(local_buf, ":%s!%s@%s ", from->name,
851 from->username, from->host);
852 int remote_len = ircsprintf(remote_buf, ":%s ", from->name);
853
854 va_start(args, pattern);
855 local_len += send_format(&local_buf[local_len], IRCD_BUFSIZE - local_len,
856 pattern, args);
857 remote_len += send_format(&remote_buf[remote_len], IRCD_BUFSIZE - remote_len,
858 pattern, args);
859 va_end(args);
860
861 /* scan the local clients */
862 DLINK_FOREACH(ptr, local_client_list.head)
863 {
864 client_p = ptr->data;
865
866 if (client_p != one && !IsDefunct(client_p) &&
867 match_it(client_p, mask, what))
868 send_message(client_p, local_buf, local_len);
869 }
870
871 /* Now scan servers */
872 DLINK_FOREACH_SAFE(ptr, ptr_next, serv_list.head)
873 {
874 client_p = ptr->data;
875
876 /*
877 * The old code looped through every client on the
878 * network for each server to check if the
879 * server (client_p) has at least 1 client matching
880 * the mask, using something like:
881 *
882 * for (target_p = GlobalClientList; target_p; target_p = target_p->next)
883 * if (IsRegisteredUser(target_p) &&
884 * match_it(target_p, mask, what) &&
885 * (target_p->from == client_p))
886 * vsendto_prefix_one(client_p, from, pattern, args);
887 *
888 * That way, we wouldn't send the message to
889 * a server who didn't have a matching client.
890 * However, on a network such as EFNet, that
891 * code would have looped through about 50
892 * servers, and in each loop, loop through
893 * about 50k clients as well, calling match()
894 * in each nested loop. That is a very bad
895 * thing cpu wise - just send the message
896 * to every connected server and let that
897 * server deal with it.
898 * -wnder
899 */
900 if (client_p != one && !IsDefunct(client_p))
901 send_message_remote(client_p, from, remote_buf, remote_len);
902 }
903 }
904
905 /* sendto_match_servs()
906 *
907 * inputs - source client
908 * - mask to send to
909 * - capab needed
910 * - data
911 * outputs - none
912 * side effects - data sent to servers matching with capab
913 */
914 void
915 sendto_match_servs(struct Client *source_p, const char *mask, int cap,
916 const char *pattern, ...)
917 {
918 va_list args;
919 struct Client *target_p;
920 dlink_node *ptr;
921 char buffer[IRCD_BUFSIZE];
922 int found = 0;
923
924 va_start(args, pattern);
925 vsnprintf(buffer, sizeof(buffer), pattern, args);
926 va_end(args);
927
928 current_serial++;
929
930 DLINK_FOREACH(ptr, global_serv_list.head)
931 {
932 target_p = ptr->data;
933
934 /* Do not attempt to send to ourselves, or the source */
935 if (IsMe(target_p) || target_p->from == source_p->from)
936 continue;
937
938 if (target_p->from->serial == current_serial)
939 continue;
940
941 if (match(mask, target_p->name))
942 {
943 /*
944 * if we set the serial here, then we'll never do a
945 * match() again, if !IsCapable()
946 */
947 target_p->from->serial = current_serial;
948 found++;
949
950 if (!IsCapable(target_p->from, cap))
951 continue;
952
953 sendto_anywhere(target_p, source_p, "%s", buffer);
954 }
955 }
956 }
957
958 /* sendto_anywhere()
959 *
960 * inputs - pointer to dest client
961 * - pointer to from client
962 * - varags
963 * output - NONE
964 * side effects - less efficient than sendto_remote and sendto_one
965 * but useful when one does not know where target "lives"
966 */
967 void
968 sendto_anywhere(struct Client *to, struct Client *from,
969 const char *pattern, ...)
970 {
971 va_list args;
972 char buffer[IRCD_BUFSIZE];
973 int len;
974 struct Client *send_to = (to->from != NULL ? to->from : to);
975
976 if (IsDead(send_to))
977 return;
978
979 if (MyClient(to))
980 {
981 if (IsServer(from))
982 {
983 if (IsCapable(to, CAP_TS6) && HasID(from))
984 len = ircsprintf(buffer, ":%s ", from->id);
985 else
986 len = ircsprintf(buffer, ":%s ", from->name);
987 }
988 else
989 len = ircsprintf(buffer, ":%s!%s@%s ",
990 from->name, from->username, from->host);
991 }
992 else len = ircsprintf(buffer, ":%s ", ID_or_name(from, send_to));
993
994 va_start(args, pattern);
995 len += send_format(&buffer[len], IRCD_BUFSIZE - len, pattern, args);
996 va_end(args);
997
998 if(MyClient(to))
999 send_message(send_to, buffer, len);
1000 else
1001 send_message_remote(send_to, from, buffer, len);
1002 }
1003
1004 /* sendto_realops_flags()
1005 *
1006 * inputs - flag types of messages to show to real opers
1007 * - flag indicating opers/admins
1008 * - var args input message
1009 * output - NONE
1010 * side effects - Send to *local* ops only but NOT +s nonopers.
1011 */
1012 void
1013 sendto_realops_flags(unsigned int flags, int level, const char *pattern, ...)
1014 {
1015 struct Client *client_p;
1016 char nbuf[IRCD_BUFSIZE];
1017 dlink_node *ptr;
1018 va_list args;
1019
1020 va_start(args, pattern);
1021 vsnprintf(nbuf, IRCD_BUFSIZE, pattern, args);
1022 va_end(args);
1023
1024 DLINK_FOREACH(ptr, oper_list.head)
1025 {
1026 client_p = ptr->data;
1027 assert(client_p->umodes & UMODE_OPER);
1028
1029 /* If we're sending it to opers and theyre an admin, skip.
1030 * If we're sending it to admins, and theyre not, skip.
1031 */
1032 if (((level == L_ADMIN) && !IsAdmin(client_p)) ||
1033 ((level == L_OPER) && IsAdmin(client_p)))
1034 continue;
1035
1036 if (client_p->umodes & flags)
1037 sendto_one(client_p, ":%s NOTICE %s :*** Notice -- %s",
1038 me.name, client_p->name, nbuf);
1039 }
1040 }
1041
1042 /* sendto_wallops_flags()
1043 *
1044 * inputs - flag types of messages to show to real opers
1045 * - client sending request
1046 * - var args input message
1047 * output - NONE
1048 * side effects - Send a wallops to local opers
1049 */
1050 void
1051 sendto_wallops_flags(unsigned int flags, struct Client *source_p,
1052 const char *pattern, ...)
1053 {
1054 struct Client *client_p;
1055 dlink_node *ptr;
1056 va_list args;
1057 char buffer[IRCD_BUFSIZE];
1058 int len;
1059
1060 if (IsClient(source_p))
1061 len = ircsprintf(buffer, ":%s!%s@%s WALLOPS :",
1062 source_p->name, source_p->username, source_p->host);
1063 else
1064 len = ircsprintf(buffer, ":%s WALLOPS :", source_p->name);
1065
1066 va_start(args, pattern);
1067 len += send_format(&buffer[len], IRCD_BUFSIZE - len, pattern, args);
1068 va_end(args);
1069
1070 DLINK_FOREACH(ptr, oper_list.head)
1071 {
1072 client_p = ptr->data;
1073 assert(client_p->umodes & UMODE_OPER);
1074
1075 if ((client_p->umodes & flags) && !IsDefunct(client_p))
1076 send_message(client_p, buffer, len);
1077 }
1078 }
1079
1080 /* ts_warn()
1081 *
1082 * inputs - var args message
1083 * output - NONE
1084 * side effects - Call sendto_realops_flags, with some flood checking
1085 * (at most 5 warnings every 5 seconds)
1086 */
1087 void
1088 ts_warn(const char *pattern, ...)
1089 {
1090 va_list args;
1091 char buffer[LOG_BUFSIZE];
1092 static time_t last = 0;
1093 static int warnings = 0;
1094
1095 /*
1096 ** if we're running with TS_WARNINGS enabled and someone does
1097 ** something silly like (remotely) connecting a nonTS server,
1098 ** we'll get a ton of warnings, so we make sure we don't send
1099 ** more than 5 every 5 seconds. -orabidoo
1100 */
1101
1102 if (CurrentTime - last < 5)
1103 {
1104 if (++warnings > 5)
1105 return;
1106 }
1107 else
1108 {
1109 last = CurrentTime;
1110 warnings = 0;
1111 }
1112
1113 va_start(args, pattern);
1114 vsprintf_irc(buffer, pattern, args);
1115 va_end(args);
1116
1117 sendto_realops_flags(UMODE_ALL, L_ALL, "%s", buffer);
1118 ilog(L_CRIT, "%s", buffer);
1119 }
1120
1121 /* kill_client()
1122 *
1123 * inputs - client to send kill towards
1124 * - pointer to client to kill
1125 * - reason for kill
1126 * output - NONE
1127 * side effects - NONE
1128 */
1129 void
1130 kill_client(struct Client *client_p, struct Client *diedie,
1131 const char *pattern, ...)
1132 {
1133 va_list args;
1134 char buffer[IRCD_BUFSIZE];
1135 int len;
1136
1137 if (client_p->from != NULL)
1138 client_p = client_p->from;
1139 if (IsDead(client_p))
1140 return;
1141
1142 len = ircsprintf(buffer, ":%s KILL %s :", ID_or_name(&me, client_p->from),
1143 ID_or_name(diedie, client_p));
1144
1145 va_start(args, pattern);
1146 len += send_format(&buffer[len], IRCD_BUFSIZE - len, pattern, args);
1147 va_end(args);
1148
1149 send_message(client_p, buffer, len);
1150 }
1151
1152 /* kill_client_ll_serv_butone()
1153 *
1154 * inputs - pointer to client to not send to
1155 * - pointer to client to kill
1156 * output - NONE
1157 * side effects - Send a KILL for the given client
1158 * message to all connected servers
1159 * except the client 'one'. Also deal with
1160 * client being unknown to leaf, as in lazylink...
1161 */
1162 void
1163 kill_client_ll_serv_butone(struct Client *one, struct Client *source_p,
1164 const char *pattern, ...)
1165 {
1166 va_list args;
1167 int have_uid = 0;
1168 struct Client *client_p;
1169 dlink_node *ptr;
1170 char buf_uid[IRCD_BUFSIZE], buf_nick[IRCD_BUFSIZE];
1171 int len_uid = 0, len_nick;
1172
1173 va_start(args, pattern);
1174 if (HasID(source_p) && (me.id[0] != '\0'))
1175 {
1176 have_uid = 1;
1177 len_uid = ircsprintf(buf_uid, ":%s KILL %s :", me.id, ID(source_p));
1178 len_uid += send_format(&buf_uid[len_uid], IRCD_BUFSIZE - len_uid, pattern,
1179 args);
1180 }
1181 len_nick = ircsprintf(buf_nick, ":%s KILL %s :", me.name, source_p->name);
1182 len_nick += send_format(&buf_nick[len_nick], IRCD_BUFSIZE - len_nick, pattern,
1183 args);
1184 va_end(args);
1185
1186 DLINK_FOREACH(ptr, serv_list.head)
1187 {
1188 client_p = ptr->data;
1189
1190 if (one != NULL && (client_p == one->from))
1191 continue;
1192 if (IsDefunct(client_p))
1193 continue;
1194
1195 /* XXX perhaps IsCapable should test for localClient itself ? -db */
1196 if (client_p->localClient == NULL || !IsCapable(client_p, CAP_LL) ||
1197 !ServerInfo.hub ||
1198 (source_p->lazyLinkClientExists & client_p->localClient->serverMask))
1199 {
1200 if (have_uid && IsCapable(client_p, CAP_TS6))
1201 send_message(client_p, buf_uid, len_uid);
1202 else
1203 send_message(client_p, buf_nick, len_nick);
1204 }
1205 }
1206 }

Properties

Name Value
svn:eol-style native
svn:keywords Id Revision