2 * IRC - Internet Relay Chat, common/send.c
3 * Copyright (C) 1990 Jarkko Oikarinen and
4 * University of Oulu, Computing Center
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 1, or (at your option)
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 #include "ircd_snprintf.h"
28 #include "ircd_string.h"
37 #include "sprintf_irc.h"
47 static int sentalong[MAXCONNECTIONS];
48 static int sentalong_marker;
49 struct SLink *opsarray[32]; /* don't use highest bit unless you change
50 atoi to strtoul in sendto_op_mask() */
59 * An error has been detected. The link *must* be closed,
60 * but *cannot* call ExitClient (m_bye) from here.
61 * Instead, mark it with FLAGS_DEADSOCKET. This should
62 * generate ExitClient from the main loop.
64 * If 'notice' is not NULL, it is assumed to be a format
65 * for a message to local opers. It can contain only one
66 * '%s', which will be replaced by the sockhost field of
69 * Also, the notice is skipped for "uninteresting" cases,
70 * like Persons and yet unknown connections...
73 static void dead_link(struct Client *to, char *notice)
75 to->flags |= FLAGS_DEADSOCKET;
77 * If because of BUFFERPOOL problem then clean dbuf's now so that
78 * notices don't hurt operators below.
80 DBufClear(&to->recvQ);
81 DBufClear(&to->sendQ);
84 * Keep a copy of the last comment, for later use...
86 ircd_strncpy(to->info, notice, REALLEN);
88 if (!IsUser(to) && !IsUnknown(to) && !(to->flags & FLAGS_CLOSING))
89 sendto_ops("%s for %s", to->info, to->name);
90 Debug((DEBUG_ERROR, to->info));
93 static int can_send(struct Client* to)
96 return (IsDead(to) || IsMe(to) || -1 == to->fd) ? 0 : 1;
102 * Used to empty all output buffers for all connections. Should only
103 * be called once per scan of connections. There should be a select in
104 * here perhaps but that means either forcing a timeout or doing a poll.
105 * When flushing, all we do is empty the obuffer array for each local
106 * client and try to send it. if we cant send it, it goes into the sendQ
109 void flush_connections(struct Client* cptr)
116 for (i = HighestFd; i >= 0; i--) {
117 if ((cptr = LocalClientArray[i]))
124 * flush_sendq_except - run through local client array and flush
125 * the sendq for each client, if the address of the client sendq
126 * is the same as the one specified, it is skipped. This is used
127 * by dbuf_put to try to get some more memory before bailing and
128 * causing the client to be disconnected.
130 void flush_sendq_except(const struct DBuf* one)
134 for (i = HighestFd; i >= 0; i--) {
135 if ( (cptr = LocalClientArray[i]) && one != &cptr->sendQ)
143 * This function is called from the main select-loop (or whatever)
144 * when there is a chance that some output would be possible. This
145 * attempts to empty the send queue as far as possible...
147 void send_queued(struct Client *to)
150 assert(0 != to->local);
152 if (IsBlocked(to) || !can_send(to))
153 return; /* Don't bother */
155 while (DBufLength(&to->sendQ) > 0) {
157 const char* msg = dbuf_map(&to->sendQ, &len);
159 if ((len = deliver_it(to, msg, len))) {
160 dbuf_delete(&to->sendQ, len);
161 to->lastsq = DBufLength(&to->sendQ) / 1024;
168 sprintf(tmp,"Write error: %s",(strerror(to->error)) ? (strerror(to->error)) : "Unknown error" );
177 * send message to single client
179 void sendto_one(struct Client *to, const char* pattern, ...)
182 va_start(vl, pattern);
183 vsendto_one(to, pattern, vl);
188 void vsendto_one(struct Client *to, const char* pattern, va_list vl)
190 vsprintf_irc(sendbuf, pattern, vl);
195 * Send a (prefixed) command to a single client; select which of <cmd>
196 * <tok> to use depending on if to is a server or not. <from> is the
197 * originator of the command.
199 void sendcmdto_one(struct Client *to, const char *cmd, const char *tok,
200 struct Client *from, const char *pattern, ...)
204 va_start(vl, pattern);
205 vsendcmdto_one(to, cmd, tok, from, pattern, vl);
209 void vsendcmdto_one(struct Client *to, const char *cmd, const char *tok,
210 struct Client *from, const char *pattern, va_list vl)
213 char sndbuf[IRC_BUFSIZE];
215 vd.vd_format = pattern; /* set up the struct VarData for %v */
218 if (MyUser(to)) /* :nick!user@host form; use cmd */
219 ircd_snprintf(to, sndbuf, sizeof(sndbuf) - 2, ":%s!%s@%s %s %v",
220 from->name, from->user->username, from->user->host,
222 else /* numeric form; use tok */
223 ircd_snprintf(to, sndbuf, sizeof(sndbuf) - 2, "%C %s %v", from, tok, &vd);
225 send_buffer(to, sndbuf);
229 static void send_to_god(struct Client* to, const char* buf)
231 if (!sdbflag && !IsUser(to)) {
232 char sbuf2[BUFSIZE + 1];
233 unsigned int len = strlen(buf) - 2; /* Remove "\r\n" */
236 len = IRCD_MIN(len, BUFSIZE);
237 ircd_strncpy(sbuf2, buf, len);
243 sendto_ops("SND:%-8.8s(%.4d): \"%s...%s\"",
244 to->name, len, sbuf2, &sbuf2[len - 200]);
247 sendto_ops("SND:%-8.8s(%.4d): \"%s\"", to->name, len, sbuf2);
253 void send_buffer(struct Client* to, char* buf)
264 * This socket has already been marked as dead
268 if (DBufLength(&to->sendQ) > get_sendq(to)) {
270 sendto_ops("Max SendQ limit exceeded for %s: " SIZE_T_FMT " > " SIZE_T_FMT,
271 to->name, DBufLength(&to->sendQ), get_sendq(to));
272 dead_link(to, "Max sendQ exceeded");
276 Debug((DEBUG_SEND, "Sending [%s] to %s", buf, to->name));
279 if (buf[len - 1] != '\n') {
287 if (0 == dbuf_put(&to->sendQ, buf, len)) {
288 dead_link(to, "Buffer allocation error");
293 send_to_god(to, buf);
296 * Update statistics. The following is slightly incorrect
297 * because it counts messages even if queued, but bytes
298 * only really sent. Queued bytes get updated in SendQueued.
303 * This little bit is to stop the sendQ from growing too large when
304 * there is no need for it to. Thus we call send_queued() every time
305 * 2k has been added to the queue since the last non-fatal write.
306 * Also stops us from deliberately building a large sendQ and then
307 * trying to flood that link with data (possible during the net
308 * relinking done by servers with a large load).
310 if (DBufLength(&to->sendQ) / 1024 > to->lastsq)
314 void sendbufto_one(struct Client* to)
316 send_buffer(to, sendbuf);
319 static void vsendto_prefix_one(struct Client *to, struct Client *from,
320 const char* pattern, va_list vl)
322 if (to && from && MyUser(to) && IsUser(from))
324 static char sender[HOSTLEN + NICKLEN + USERLEN + 5];
327 struct User *user = from->user;
329 par = va_arg(vl, char *);
330 strcpy(sender, from->name);
336 strcat(sender, user->username);
338 if (*user->host && !MyConnect(from))
341 strcat(sender, user->host);
346 * Flag is used instead of strchr(sender, '@') for speed and
347 * also since username/nick may have had a '@' in them. -avalon
349 if (!flag && MyConnect(from) && *user->host)
352 strcat(sender, from->sockhost);
355 strcpy(&sendbuf[1], sender);
356 /* Assuming 'pattern' always starts with ":%s ..." */
357 vsprintf_irc(sendbuf + strlen(sendbuf), &pattern[3], vl);
360 vsprintf_irc(sendbuf, pattern, vl);
364 void sendto_channel_butone(struct Client *one, struct Client *from, struct Channel *chptr,
365 const char* pattern, ...)
368 struct Membership* member;
369 struct Client *acptr;
372 va_start(vl, pattern);
375 for (member = chptr->members; member; member = member->next_member)
377 acptr = member->user;
378 /* ...was the one I should skip */
379 if (acptr->from == one || IsZombie(member) || IsDeaf(acptr))
381 if (MyConnect(acptr)) /* (It is always a client) */
382 vsendto_prefix_one(acptr, from, pattern, vl);
383 else if (-1 < (i = acptr->from->fd) && sentalong[i] != sentalong_marker)
385 sentalong[i] = sentalong_marker;
387 * Don't send channel messages to links that are still eating
388 * the net.burst: -- Run 2/1/1997
390 if (!IsBurstOrBurstAck(acptr->from))
391 vsendto_prefix_one(acptr, from, pattern, vl);
398 void sendmsgto_channel_butone(struct Client *one, struct Client *from,
399 struct Channel *chptr, const char *sender,
400 const char *cmd, const char *chname, const char *msg)
403 * Sends a PRIVMSG/NOTICE to all members on a channel but 'one', translating
404 * TOKENS to full messages when sent to local clients. --Gte (12/12/99)
406 struct Membership* member;
407 struct Client *acptr;
415 * Precalculate the buffers we sent to the clients instead of doing an
416 * expensive sprintf() per member that we send to. We still have to
417 * use strcpy() which is evil.
419 if (IsServer(from)) {
420 sprintf(userbuf,":%s %s %s :%s",
421 from->name, ('P' == *cmd) ? MSG_PRIVATE : MSG_NOTICE, chname, msg);
422 sprintf(servbuf,"%s %s %s :%s", NumServ(from), cmd, chname, msg);
425 sprintf(userbuf,":%s!%s@%s %s %s :%s",
426 from->name, from->user->username, from->user->host,
427 ('P' == *cmd) ? MSG_PRIVATE : MSG_NOTICE, chname, msg);
428 sprintf(servbuf,"%s%s %s %s :%s", NumNick(from), cmd, chname, msg);
432 for (member = chptr->members; member; member = member->next_member)
434 acptr = member->user;
435 /* ...was the one I should skip */
436 if (acptr->from == one || IsZombie(member) || IsDeaf(acptr))
438 if (MyConnect(acptr)) { /* (It is always a client) */
440 strcpy(sendbuf,userbuf);
442 sendbufto_one(acptr);
444 else if (-1 < (i = acptr->from->fd) && sentalong[i] != sentalong_marker)
446 sentalong[i] = sentalong_marker;
447 if (!IsBurstOrBurstAck(acptr->from)) {
449 strcpy(sendbuf,servbuf);
451 sendbufto_one(acptr);
453 } /* of if MyConnect() */
454 } /* of for(members) */
457 void sendto_lchanops_butone(struct Client *one, struct Client *from, struct Channel *chptr,
458 const char* pattern, ...)
461 struct Membership* member;
462 struct Client *acptr;
464 va_start(vl, pattern);
466 for (member = chptr->members; member; member = member->next_member)
468 acptr = member->user;
469 /* ...was the one I should skip */
470 if (acptr == one || !IsChanOp(member) || IsZombie(member) || IsDeaf(acptr))
472 if (MyConnect(acptr)) /* (It is always a client) */
473 vsendto_prefix_one(acptr, from, pattern, vl);
479 void sendto_chanopsserv_butone(struct Client *one, struct Client *from, struct Channel *chptr,
480 const char* pattern, ...)
483 struct Membership* member;
484 struct Client *acptr;
493 va_start(vl, pattern);
496 for (member = chptr->members; member; member = member->next_member)
498 acptr = member->user;
499 if (acptr->from == acptr || /* Skip local clients */
501 Protocol(acptr->from) < 10 || /* Skip P09 links */
503 acptr->from == one || /* ...was the one I should skip */
504 !IsChanOp(member) || /* Skip non chanops */
505 IsZombie(member) || IsDeaf(acptr))
507 if (-1 < (i = acptr->from->fd) && sentalong[i] != sentalong_marker)
509 sentalong[i] = sentalong_marker;
510 /* Don't send channel messages to links that are
511 still eating the net.burst: -- Run 2/1/1997 */
512 if (!IsBurstOrBurstAck(acptr->from))
513 vsendto_prefix_one(acptr, from, pattern, vl);
518 /* Send message to all 2.9 servers */
519 /* This is a hack, because it assumes that we know how `vl' is build up */
520 source = va_arg(vl, char *);
521 tp = va_arg(vl, char *); /* Channel */
522 msg = va_arg(vl, char *);
523 for (member = chptr->members; member; member = member->next_member)
525 acptr = member->user;
526 if (acptr->from == acptr || /* Skip local clients */
527 Protocol(acptr->from) > 9 || /* Skip P10 servers */
528 acptr->from == one || /* ...was the one I should skip */
529 !IsChanOp(member) || /* Skip non chanops */
530 IsZombie(member) || IsDeaf(acptr))
532 if (-1 < (i = acptr->from->fd) && sentalong[i] != sentalong_marker)
534 sentalong[i] = sentalong_marker;
535 /* Don't send channel messages to links that are
536 still eating the net.burst: -- Run 2/1/1997 */
537 if (!IsBurstOrBurstAck(acptr->from))
539 struct Membership* other_member;
540 struct Client* acptr2;
543 /* Find all chanops in this direction: */
544 for (other_member = chptr->members; other_member; other_member = other_member->next_member)
546 acptr2 = other_member->user;
547 if (acptr2->from == acptr->from && acptr2->from != one &&
548 IsChanOp(other_member) && !IsZombie(other_member) &&
551 int len = strlen(acptr2->name);
552 if (tp + len + 2 > target + sizeof(target))
554 sendto_prefix_one(acptr, from,
555 ":%s NOTICE %s :%s", source, target, msg);
561 strcpy(tp, acptr2->name);
565 sendto_prefix_one(acptr, from,
566 ":%s NOTICE %s :%s", source, target, msg);
579 * Send a message to all connected servers except the client 'one'.
581 void sendto_serv_butone(struct Client *one, const char* pattern, ...)
586 va_start(vl, pattern);
587 vsprintf_irc(sendbuf, pattern, vl);
590 for (lp = me.serv->down; lp; lp = lp->next)
592 if (one && lp->value.cptr == one->from)
594 sendbufto_one(lp->value.cptr);
599 void sendcmdto_serv_butone(struct Client *one, const char *cmd,
600 const char *tok, struct Client *from,
601 const char *pattern, ...)
605 char sndbuf[IRC_BUFSIZE];
608 cmd = 0; /* try to suppress compile warning */
610 va_start(vl, pattern);
611 vd.vd_format = pattern; /* set up the struct VarData for %v */
615 ircd_snprintf(&me, sndbuf, sizeof(sndbuf) - 2, "%C %s %v", from, tok, &vd);
618 /* send it to our downlinks */
619 for (lp = me.serv->down; lp; lp = lp->next) {
620 if (one && lp->value.cptr == one->from)
622 send_buffer(lp->value.cptr, sndbuf);
627 * sendbufto_serv_butone()
629 * Send prepared sendbuf to all connected servers except the client 'one'
630 * -Ghostwolf 18-May-97
632 void sendbufto_serv_butone(struct Client *one)
636 for (lp = me.serv->down; lp; lp = lp->next)
638 if (one && lp->value.cptr == one->from)
640 sendbufto_one(lp->value.cptr);
646 * sendto_common_channels()
648 * Sends a message to all people (inclusing `acptr') on local server
649 * who are in same channel with client `acptr'.
651 void sendto_common_channels(struct Client *acptr, const char* pattern, ...)
654 struct Membership* chan;
655 struct Membership* member;
658 assert(0 != acptr->from);
659 assert(0 != pattern);
661 va_start(vl, pattern);
664 if (-1 < acptr->from->fd)
665 sentalong[acptr->from->fd] = sentalong_marker;
667 * loop through acptr's channels, and the members on their channels
670 for (chan = acptr->user->channel; chan; chan = chan->next_channel) {
671 for (member = chan->channel->members; member; member = member->next_member) {
672 struct Client *cptr = member->user;
674 if (MyConnect(cptr) &&
675 -1 < (i = cptr->fd) && sentalong[i] != sentalong_marker) {
676 sentalong[i] = sentalong_marker;
677 vsendto_prefix_one(cptr, acptr, pattern, vl);
682 if (MyConnect(acptr))
683 vsendto_prefix_one(acptr, acptr, pattern, vl);
689 * sendto_channel_butserv
691 * Send a message to all members of a channel that
692 * are connected to this server.
694 void sendto_channel_butserv(struct Channel *chptr, struct Client *from, const char* pattern, ...)
697 struct Membership* member;
698 struct Client *acptr;
700 va_start(vl, pattern);
702 for (member = chptr->members; member; member = member->next_member) {
703 acptr = member->user;
704 if (MyConnect(acptr) && !IsZombie(member))
705 vsendto_prefix_one(acptr, from, pattern, vl);
712 * Send a msg to all ppl on servers/hosts that match a specified mask
713 * (used for enhanced PRIVMSGs)
715 * addition -- Armin, 8jun90 (gruner@informatik.tu-muenchen.de)
718 static int match_it(struct Client *one, const char *mask, int what)
723 return (match(mask, one->user->host) == 0);
726 return (match(mask, one->user->server->name) == 0);
731 * sendto_match_butone
733 * Send to all clients which match the mask in a way defined on 'what';
734 * either by user hostname or user servername.
736 void sendto_match_butone(struct Client *one, struct Client *from,
737 const char *mask, int what, const char* pattern, ...)
741 struct Client *cptr, *acptr;
743 va_start(vl, pattern);
744 for (i = 0; i <= HighestFd; i++)
746 if (!(cptr = LocalClientArray[i]))
747 continue; /* that clients are not mine */
748 if (cptr == one) /* must skip the origin !! */
752 for (acptr = GlobalClientList; acptr; acptr = acptr->next)
753 if (IsUser(acptr) && match_it(acptr, mask, what) && acptr->from == cptr)
755 /* a person on that server matches the mask, so we
756 * send *one* msg to that server ...
760 /* ... but only if there *IS* a matching person */
762 /* my client, does he match ? */
763 else if (!(IsUser(cptr) && match_it(cptr, mask, what)))
765 vsendto_prefix_one(cptr, from, pattern, vl);
775 * Send to *local* ops but one.
777 void sendto_lops_butone(struct Client* one, const char* pattern, ...)
781 struct Client** clients = me.serv->client_list;
785 assert(0 != clients);
787 sprintf_irc(nbuf, ":%s NOTICE %%s :*** Notice -- ", me.name);
788 va_start(vl, pattern);
789 vsprintf_irc(nbuf + strlen(nbuf), pattern, vl);
792 for (i = 0; i <= me.serv->nn_mask; ++i) {
793 if ((cptr = clients[i]) && cptr != one && SendServNotice(cptr)) {
794 sprintf_irc(sendbuf, nbuf, cptr->name);
803 * Sends message to the list indicated by the bitmask field.
804 * Don't try to send to more than one list! That is not supported.
807 void vsendto_op_mask(unsigned int mask, const char *pattern, va_list vl)
809 static char fmt[1024];
811 int i = 0; /* so that 1 points to opsarray[0] */
812 struct SLink *opslist;
816 if (!(opslist = opsarray[i]))
819 fmt_target = sprintf_irc(fmt, ":%s NOTICE ", me.name);
822 strcpy(fmt_target, opslist->value.cptr->name);
823 strcat(fmt_target, " :*** Notice -- ");
824 strcat(fmt_target, pattern);
825 vsendto_one(opslist->value.cptr, fmt, vl);
826 opslist = opslist->next;
834 * Send a prepared sendbuf to the list indicated by the bitmask field.
835 * Ghostwolf 16-May-97
837 void sendbufto_op_mask(unsigned int mask)
839 int i = 0; /* so that 1 points to opsarray[0] */
840 struct SLink *opslist;
843 if (!(opslist = opsarray[i]))
847 sendbufto_one(opslist->value.cptr);
848 opslist = opslist->next;
857 * Send to *local* ops only.
859 void vsendto_ops(const char *pattern, va_list vl)
866 fmt_target = sprintf_irc(fmt, ":%s NOTICE ", me.name);
868 for (i = 0; i <= HighestFd; i++)
869 if ((cptr = LocalClientArray[i]) && !IsServer(cptr) &&
870 SendServNotice(cptr))
872 strcpy(fmt_target, cptr->name);
873 strcat(fmt_target, " :*** Notice -- ");
874 strcat(fmt_target, pattern);
875 vsendto_one(cptr, fmt, vl);
879 void sendto_op_mask(unsigned int mask, const char *pattern, ...)
882 va_start(vl, pattern);
883 vsendto_op_mask(mask, pattern, vl);
887 void sendto_ops(const char *pattern, ...)
890 va_start(vl, pattern);
891 vsendto_op_mask(SNO_OLDSNO, pattern, vl);
898 * Send message to all operators.
899 * one - client not to send message to
900 * from- client which message is from *NEVER* NULL!!
902 void sendto_ops_butone(struct Client *one, struct Client *from, const char *pattern, ...)
908 va_start(vl, pattern);
910 for (cptr = GlobalClientList; cptr; cptr = cptr->next)
912 if (!SendWallops(cptr))
914 i = cptr->from->fd; /* find connection oper is on */
915 if (i < 0 || sentalong[i] == sentalong_marker) /* sent message along it already ? */
917 if (cptr->from == one)
918 continue; /* ...was the one I should skip */
919 sentalong[i] = sentalong_marker;
920 vsendto_prefix_one(cptr->from, from, pattern, vl);
928 * sendto_g_serv_butone
930 * Send message to all remote +g users (server links).
932 * one - server not to send message to.
934 void sendto_g_serv_butone(struct Client *one, const char *pattern, ...)
940 va_start(vl, pattern);
942 vsprintf_irc(sendbuf, pattern, vl);
943 for (cptr = GlobalClientList; cptr; cptr = cptr->next)
945 if (!SendDebug(cptr))
947 i = cptr->from->fd; /* find connection user is on */
948 if (i < 0 || sentalong[i] == sentalong_marker) /* sent message along it already ? */
952 sentalong[i] = sentalong_marker;
953 if (cptr->from == one)
965 * to - destination client
966 * from - client which message is from
968 * NOTE: NEITHER OF THESE SHOULD *EVER* BE NULL!!
971 void sendto_prefix_one(struct Client *to, struct Client *from, const char *pattern, ...)
974 va_start(vl, pattern);
975 vsendto_prefix_one(to, from, pattern, vl);
982 * Send to *local* ops only but NOT +s nonopers.
984 void sendto_realops(const char *pattern, ...)
988 va_start(vl, pattern);
989 vsendto_op_mask(SNO_OLDREALOP, pattern, vl);
996 * Send message to all servers of protocol 'p' and lower.
998 void sendto_lowprot_butone(struct Client *cptr, int p, const char *pattern, ...)
1002 va_start(vl, pattern);
1003 for (lp = me.serv->down; lp; lp = lp->next)
1004 if (lp->value.cptr != cptr && Protocol(lp->value.cptr) <= p)
1005 vsendto_one(lp->value.cptr, pattern, vl);
1010 * Send message to all servers of protocol 'p' and higher.
1012 void sendto_highprot_butone(struct Client *cptr, int p, const char *pattern, ...)
1016 va_start(vl, pattern);
1017 for (lp = me.serv->down; lp; lp = lp->next)
1018 if (lp->value.cptr != cptr && Protocol(lp->value.cptr) >= p)
1019 vsendto_one(lp->value.cptr, pattern, vl);