X-Git-Url: http://git.pk910.de/?p=ircu2.10.12-pk.git;a=blobdiff_plain;f=ircd%2Fsend.c;fp=ircd%2Fsend.c;h=1afbaec34ccf12c7a2ebfb791c8aa704f9994729;hp=0000000000000000000000000000000000000000;hb=0400a5a6479398d82526785c18c0df8bc8b92dce;hpb=d17e10da972ce5776c60b4c317267c6abe0e1ead

diff --git a/ircd/send.c b/ircd/send.c
new file mode 100644
index 0000000..1afbaec
--- /dev/null
+++ b/ircd/send.c
@@ -0,0 +1,854 @@
+/*
+ * IRC - Internet Relay Chat, common/send.c
+ * Copyright (C) 1990 Jarkko Oikarinen and
+ *                    University of Oulu, Computing Center
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 1, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+/** @file
+ * @brief Send messages to certain targets.
+ * @version $Id$
+ */
+#include "config.h"
+
+#include "send.h"
+#include "channel.h"
+#include "class.h"
+#include "client.h"
+#include "ircd.h"
+#include "ircd_features.h"
+#include "ircd_log.h"
+#include "ircd_snprintf.h"
+#include "ircd_string.h"
+#include "list.h"
+#include "match.h"
+#include "msg.h"
+#include "numnicks.h"
+#include "parse.h"
+#include "s_bsd.h"
+#include "s_debug.h"
+#include "s_misc.h"
+#include "s_user.h"
+#include "struct.h"
+#include "sys.h"
+
+/* #include <assert.h> -- Now using assert in ircd_log.h */
+#include <stdio.h>
+#include <string.h>
+
+/** Last used marker value. */
+static int sentalong_marker;
+/** Array of users with the corresponding server notice mask bit set. */
+struct SLink *opsarray[32];     /* don't use highest bit unless you change
+				   atoi to strtoul in sendto_op_mask() */
+/** Linked list of all connections with data queued to send. */
+static struct Connection *send_queues;
+
+/*
+ * dead_link
+ *
+ * An error has been detected. The link *must* be closed,
+ * but *cannot* call ExitClient (m_bye) from here.
+ * Instead, mark it with FLAG_DEADSOCKET. This should
+ * generate ExitClient from the main loop.
+ *
+ * If 'notice' is not NULL, it is assumed to be a format
+ * for a message to local opers. It can contain only one
+ * '%s', which will be replaced by the sockhost field of
+ * the failing link.
+ *
+ * Also, the notice is skipped for "uninteresting" cases,
+ * like Persons and yet unknown connections...
+ */
+/** Mark a client as dead, even if they are not the current message source.
+ * This is done by setting the DEADSOCKET flag on the user and letting the
+ * main loop perform the actual exit logic.
+ * @param[in,out] to Client being killed.
+ * @param[in] notice Message for local opers.
+ */
+static void dead_link(struct Client *to, char *notice)
+{
+  SetFlag(to, FLAG_DEADSOCKET);
+  /*
+   * If because of BUFFERPOOL problem then clean dbuf's now so that
+   * notices don't hurt operators below.
+   */
+  DBufClear(&(cli_recvQ(to)));
+  MsgQClear(&(cli_sendQ(to)));
+  client_drop_sendq(cli_connect(to));
+
+  /*
+   * Keep a copy of the last comment, for later use...
+   */
+  ircd_strncpy(cli_info(to), notice, REALLEN);
+
+  if (!IsUser(to) && !IsUnknown(to) && !HasFlag(to, FLAG_CLOSING))
+    sendto_opmask_butone(0, SNO_OLDSNO, "%s for %s", cli_info(to), cli_name(to));
+  Debug((DEBUG_ERROR, cli_info(to)));
+}
+
+/** Test whether we can send to a client.
+ * @param[in] to Client we want to send to.
+ * @return Non-zero if we can send to the client.
+ */
+static int can_send(struct Client* to)
+{
+  assert(0 != to);
+  return (IsDead(to) || IsMe(to) || -1 == cli_fd(to)) ? 0 : 1;
+}
+
+/** Close the connection with the highest sendq.
+ * This should be called when we need to free buffer memory.
+ * @param[in] servers_too If non-zero, consider killing servers, too.
+ */
+void
+kill_highest_sendq(int servers_too)
+{
+  int i;
+  unsigned int highest_sendq = 0;
+  struct Client *highest_client = 0;
+
+  for (i = HighestFd; i >= 0; i--)
+  {
+    if (!LocalClientArray[i] || (!servers_too && cli_serv(LocalClientArray[i])))
+      continue; /* skip servers */
+    
+    /* If this sendq is higher than one we last saw, remember it */
+    if (MsgQLength(&(cli_sendQ(LocalClientArray[i]))) > highest_sendq)
+    {
+      highest_client = LocalClientArray[i];
+      highest_sendq = MsgQLength(&(cli_sendQ(highest_client)));
+    }
+  }
+
+  if (highest_client)
+    dead_link(highest_client, "Buffer allocation error");
+}
+
+/*
+ * flush_connections
+ *
+ * Used to empty all output buffers for all connections. Should only
+ * be called once per scan of connections. There should be a select in
+ * here perhaps but that means either forcing a timeout or doing a poll.
+ * When flushing, all we do is empty the obuffer array for each local
+ * client and try to send it. if we cant send it, it goes into the sendQ
+ * -avalon
+ */
+/** Flush data queued for one or all connections.
+ * @param[in] cptr Client to flush (if NULL, do all).
+ */
+void flush_connections(struct Client* cptr)
+{
+  if (cptr) {
+    send_queued(cptr);
+  }
+  else {
+    struct Connection* con;
+    for (con = send_queues; con; con = con_next(con)) {
+      assert(0 < MsgQLength(&(con_sendQ(con))));
+      send_queued(con_client(con));
+    }
+  }
+}
+
+/*
+ * send_queued
+ *
+ * This function is called from the main select-loop (or whatever)
+ * when there is a chance that some output would be possible. This
+ * attempts to empty the send queue as far as possible...
+ */
+/** Attempt to send data queued for a client.
+ * @param[in] to Client to send data to.
+ */
+void send_queued(struct Client *to)
+{
+  assert(0 != to);
+  assert(0 != cli_local(to));
+
+  if (IsBlocked(to) || !can_send(to))
+    return;                     /* Don't bother */
+
+  while (MsgQLength(&(cli_sendQ(to))) > 0) {
+    unsigned int len;
+
+    if ((len = deliver_it(to, &(cli_sendQ(to))))) {
+      msgq_delete(&(cli_sendQ(to)), len);
+      cli_lastsq(to) = MsgQLength(&(cli_sendQ(to))) / 1024;
+      if (IsBlocked(to)) {
+	update_write(to);
+        return;
+      }
+    }
+    else {
+      if (IsDead(to)) {
+        char tmp[512];
+        sprintf(tmp,"Write error: %s",(strerror(cli_error(to))) ? (strerror(cli_error(to))) : "Unknown error" );
+        dead_link(to, tmp);
+      }
+      return;
+    }
+  }
+
+  /* Ok, sendq is now empty... */
+  client_drop_sendq(cli_connect(to));
+  update_write(to);
+}
+
+/** Try to send a buffer to a client, queueing it if needed.
+ * @param[in,out] to Client to send message to.
+ * @param[in] buf Message to send.
+ * @param[in] prio If non-zero, send as high priority.
+ */
+void send_buffer(struct Client* to, struct MsgBuf* buf, int prio)
+{
+  assert(0 != to);
+  assert(0 != buf);
+
+  if (cli_from(to))
+    to = cli_from(to);
+
+  if (!can_send(to))
+    /*
+     * This socket has already been marked as dead
+     */
+    return;
+
+  if (MsgQLength(&(cli_sendQ(to))) > get_sendq(to)) {
+    if (IsServer(to))
+      sendto_opmask_butone(0, SNO_OLDSNO, "Max SendQ limit exceeded for %C: "
+			   "%zu > %zu", to, MsgQLength(&(cli_sendQ(to))),
+			   get_sendq(to));
+    dead_link(to, "Max sendQ exceeded");
+    return;
+  }
+
+  Debug((DEBUG_SEND, "Sending [%p] to %s", buf, cli_name(to)));
+
+  msgq_add(&(cli_sendQ(to)), buf, prio);
+  client_add_sendq(cli_connect(to), &send_queues);
+  update_write(to);
+
+  /*
+   * Update statistics. The following is slightly incorrect
+   * because it counts messages even if queued, but bytes
+   * only really sent. Queued bytes get updated in SendQueued.
+   */
+  ++(cli_sendM(to));
+  ++(cli_sendM(&me));
+  /*
+   * This little bit is to stop the sendQ from growing too large when
+   * there is no need for it to. Thus we call send_queued() every time
+   * 2k has been added to the queue since the last non-fatal write.
+   * Also stops us from deliberately building a large sendQ and then
+   * trying to flood that link with data (possible during the net
+   * relinking done by servers with a large load).
+   */
+  if (MsgQLength(&(cli_sendQ(to))) / 1024 > cli_lastsq(to))
+    send_queued(to);
+}
+
+/*
+ * Send a msg to all ppl on servers/hosts that match a specified mask
+ * (used for enhanced PRIVMSGs)
+ *
+ *  addition -- Armin, 8jun90 (gruner@informatik.tu-muenchen.de)
+ */
+
+/** Check whether a client matches a target mask.
+ * @param[in] from Client trying to send a message (ignored).
+ * @param[in] one Client being considered as a target.
+ * @param[in] mask Mask for matching against.
+ * @param[in] what Type of match (either MATCH_HOST or MATCH_SERVER).
+ * @return Non-zero if \a one matches, zero if not.
+ */
+static int match_it(struct Client *from, struct Client *one, const char *mask, int what)
+{
+  switch (what)
+  {
+    case MATCH_HOST:
+      return (match(mask, cli_user(one)->host) == 0 ||
+        (HasHiddenHost(one) && match(mask, cli_user(one)->realhost) == 0));
+    case MATCH_SERVER:
+    default:
+      return (match(mask, cli_name(cli_user(one)->server)) == 0);
+  }
+}
+
+/** Send an unprefixed line to a client.
+ * @param[in] to Client receiving message.
+ * @param[in] pattern Format string of message.
+ */
+void sendrawto_one(struct Client *to, const char *pattern, ...)
+{
+  struct MsgBuf *mb;
+  va_list vl;
+
+  va_start(vl, pattern);
+  mb = msgq_vmake(to, pattern, vl);
+  va_end(vl);
+
+  send_buffer(to, mb, 0);
+
+  msgq_clean(mb);
+}
+
+/** Send a (prefixed) command to a single client.
+ * @param[in] from Client sending the command.
+ * @param[in] cmd Long name of command (used if \a to is a user).
+ * @param[in] tok Short name of command (used if \a to is a server).
+ * @param[in] to Destination of command.
+ * @param[in] pattern Format string for command arguments.
+ */
+void sendcmdto_one(struct Client *from, const char *cmd, const char *tok,
+		   struct Client *to, const char *pattern, ...)
+{
+  struct VarData vd;
+  struct MsgBuf *mb;
+
+  to = cli_from(to);
+
+  vd.vd_format = pattern; /* set up the struct VarData for %v */
+  va_start(vd.vd_args, pattern);
+
+  mb = msgq_make(to, "%:#C %s %v", from, IsServer(to) || IsMe(to) ? tok : cmd,
+		 &vd);
+
+  va_end(vd.vd_args);
+
+  send_buffer(to, mb, 0);
+
+  msgq_clean(mb);
+}
+
+/**
+ * Send a (prefixed) command to a single client in the priority queue.
+ * @param[in] from Client sending the command.
+ * @param[in] cmd Long name of command (used if \a to is a user).
+ * @param[in] tok Short name of command (used if \a to is a server).
+ * @param[in] to Destination of command.
+ * @param[in] pattern Format string for command arguments.
+ */
+void sendcmdto_prio_one(struct Client *from, const char *cmd, const char *tok,
+			struct Client *to, const char *pattern, ...)
+{
+  struct VarData vd;
+  struct MsgBuf *mb;
+
+  to = cli_from(to);
+
+  vd.vd_format = pattern; /* set up the struct VarData for %v */
+  va_start(vd.vd_args, pattern);
+
+  mb = msgq_make(to, "%:#C %s %v", from, IsServer(to) || IsMe(to) ? tok : cmd,
+		 &vd);
+
+  va_end(vd.vd_args);
+
+  send_buffer(to, mb, 1);
+
+  msgq_clean(mb);
+}
+
+/**
+ * Send a (prefixed) command to all servers matching or not matching a
+ * flag but one.
+ * @param[in] from Client sending the command.
+ * @param[in] cmd Long name of command (ignored).
+ * @param[in] tok Short name of command.
+ * @param[in] one Client direction to skip (or NULL).
+ * @param[in] require Only send to servers with this Flag bit set.
+ * @param[in] forbid Do not send to servers with this Flag bit set.
+ * @param[in] pattern Format string for command arguments.
+ */
+void sendcmdto_flag_serv_butone(struct Client *from, const char *cmd,
+                                const char *tok, struct Client *one,
+                                int require, int forbid,
+                                const char *pattern, ...)
+{
+  struct VarData vd;
+  struct MsgBuf *mb;
+  struct DLink *lp;
+
+  vd.vd_format = pattern; /* set up the struct VarData for %v */
+  va_start(vd.vd_args, pattern);
+
+  /* use token */
+  mb = msgq_make(&me, "%C %s %v", from, tok, &vd);
+  va_end(vd.vd_args);
+
+  /* send it to our downlinks */
+  for (lp = cli_serv(&me)->down; lp; lp = lp->next) {
+    if (one && lp->value.cptr == cli_from(one))
+      continue;
+    if ((require < FLAG_LAST_FLAG) && !HasFlag(lp->value.cptr, require))
+      continue;
+    if ((forbid < FLAG_LAST_FLAG) && HasFlag(lp->value.cptr, forbid))
+      continue;
+    send_buffer(lp->value.cptr, mb, 0);
+  }
+
+  msgq_clean(mb);
+}
+
+/**
+ * Send a (prefixed) command to all servers but one.
+ * @param[in] from Client sending the command.
+ * @param[in] cmd Long name of command (ignored).
+ * @param[in] tok Short name of command.
+ * @param[in] one Client direction to skip (or NULL).
+ * @param[in] pattern Format string for command arguments.
+ */
+void sendcmdto_serv_butone(struct Client *from, const char *cmd,
+			   const char *tok, struct Client *one,
+			   const char *pattern, ...)
+{
+  struct VarData vd;
+  struct MsgBuf *mb;
+  struct DLink *lp;
+
+  vd.vd_format = pattern; /* set up the struct VarData for %v */
+  va_start(vd.vd_args, pattern);
+
+  /* use token */
+  mb = msgq_make(&me, "%C %s %v", from, tok, &vd);
+  va_end(vd.vd_args);
+
+  /* send it to our downlinks */
+  for (lp = cli_serv(&me)->down; lp; lp = lp->next) {
+    if (one && lp->value.cptr == cli_from(one))
+      continue;
+    send_buffer(lp->value.cptr, mb, 0);
+  }
+
+  msgq_clean(mb);
+}
+
+/** Safely increment the sentalong marker.
+ * This increments the sentalong marker.  Since new connections will
+ * have con_sentalong() == 0, and to avoid confusion when the counter
+ * wraps, we reset all sentalong markers to zero when the sentalong
+ * marker hits zero.
+ * @param[in,out] one Client to mark with new sentalong marker (if any).
+ */
+static void
+bump_sentalong(struct Client *one)
+{
+  if (!++sentalong_marker)
+  {
+    int ii;
+    for (ii = 0; ii < HighestFd; ++ii)
+      if (LocalClientArray[ii])
+        cli_sentalong(LocalClientArray[ii]) = 0;
+    ++sentalong_marker;
+  }
+  if (one)
+    cli_sentalong(one) = sentalong_marker;
+}
+
+/** Send a (prefixed) command to all channels that \a from is on.
+ * @param[in] from Client originating the command.
+ * @param[in] cmd Long name of command.
+ * @param[in] tok Short name of command.
+ * @param[in] one Client direction to skip (or NULL).
+ * @param[in] pattern Format string for command arguments.
+ */
+void sendcmdto_common_channels_butone(struct Client *from, const char *cmd,
+				      const char *tok, struct Client *one,
+				      const char *pattern, ...)
+{
+  struct VarData vd;
+  struct MsgBuf *mb;
+  struct Membership *chan;
+  struct Membership *member;
+
+  assert(0 != from);
+  assert(0 != cli_from(from));
+  assert(0 != pattern);
+  assert(!IsServer(from) && !IsMe(from));
+
+  vd.vd_format = pattern; /* set up the struct VarData for %v */
+
+  va_start(vd.vd_args, pattern);
+
+  /* build the buffer */
+  mb = msgq_make(0, "%:#C %s %v", from, cmd, &vd);
+  va_end(vd.vd_args);
+
+  bump_sentalong(from);
+  /*
+   * loop through from's channels, and the members on their channels
+   */
+  for (chan = cli_user(from)->channel; chan; chan = chan->next_channel) {
+    if (IsZombie(chan) || IsDelayedJoin(chan))
+      continue;
+    for (member = chan->channel->members; member;
+	 member = member->next_member)
+      if (MyConnect(member->user)
+          && -1 < cli_fd(cli_from(member->user))
+          && member->user != one
+          && cli_sentalong(member->user) != sentalong_marker) {
+	cli_sentalong(member->user) = sentalong_marker;
+	send_buffer(member->user, mb, 0);
+      }
+  }
+
+  if (MyConnect(from) && from != one)
+    send_buffer(from, mb, 0);
+
+  msgq_clean(mb);
+}
+
+/** Send a (prefixed) command to all local users on a channel.
+ * @param[in] from Client originating the command.
+ * @param[in] cmd Long name of command.
+ * @param[in] tok Short name of command (ignored).
+ * @param[in] to Destination channel.
+ * @param[in] one Client direction to skip (or NULL).
+ * @param[in] skip Bitmask of SKIP_DEAF, SKIP_NONOPS, SKIP_NONVOICES indicating which clients to skip.
+ * @param[in] pattern Format string for command arguments.
+ */
+void sendcmdto_channel_butserv_butone(struct Client *from, const char *cmd,
+				      const char *tok, struct Channel *to,
+				      struct Client *one, unsigned int skip,
+                                      const char *pattern, ...)
+{
+  struct VarData vd;
+  struct MsgBuf *mb;
+  struct Membership *member;
+
+  vd.vd_format = pattern; /* set up the struct VarData for %v */
+  va_start(vd.vd_args, pattern);
+
+  /* build the buffer */
+  mb = msgq_make(0, "%:#C %s %v", from, cmd, &vd);
+  va_end(vd.vd_args);
+
+  /* send the buffer to each local channel member */
+  for (member = to->members; member; member = member->next_member) {
+    if (!MyConnect(member->user)
+        || member->user == one 
+        || IsZombie(member)
+        || (skip & SKIP_DEAF && IsDeaf(member->user))
+        || (skip & SKIP_NONOPS && !IsChanOp(member))
+        || (skip & SKIP_NONVOICES && !IsChanOp(member) && !HasVoice(member)))
+        continue;
+      send_buffer(member->user, mb, 0);
+  }
+
+  msgq_clean(mb);
+}
+
+/** Send a (prefixed) command to all servers with users on \a to.
+ * Skip \a from and \a one plus those indicated in \a skip.
+ * @param[in] from Client originating the command.
+ * @param[in] cmd Long name of command (ignored).
+ * @param[in] tok Short name of command.
+ * @param[in] to Destination channel.
+ * @param[in] one Client direction to skip (or NULL).
+ * @param[in] skip Bitmask of SKIP_NONOPS and SKIP_NONVOICES indicating which clients to skip.
+ * @param[in] pattern Format string for command arguments.
+ */
+void sendcmdto_channel_servers_butone(struct Client *from, const char *cmd,
+                                      const char *tok, struct Channel *to,
+                                      struct Client *one, unsigned int skip,
+                                      const char *pattern, ...)
+{
+  struct VarData vd;
+  struct MsgBuf *serv_mb;
+  struct Membership *member;
+
+  /* build the buffer */
+  vd.vd_format = pattern;
+  va_start(vd.vd_args, pattern);
+  serv_mb = msgq_make(&me, "%:#C %s %v", from, tok, &vd);
+  va_end(vd.vd_args);
+
+  /* send the buffer to each server */
+  bump_sentalong(one);
+  cli_sentalong(from) = sentalong_marker;
+  for (member = to->members; member; member = member->next_member) {
+    if (MyConnect(member->user)
+        || IsZombie(member)
+        || cli_fd(cli_from(member->user)) < 0
+        || cli_sentalong(member->user) == sentalong_marker
+        || (skip & SKIP_NONOPS && !IsChanOp(member))
+        || (skip & SKIP_NONVOICES && !IsChanOp(member) && !HasVoice(member)))
+      continue;
+    cli_sentalong(member->user) = sentalong_marker;
+    send_buffer(member->user, serv_mb, 0);
+  }
+  msgq_clean(serv_mb);
+}
+
+
+/** Send a (prefixed) command to all users on this channel, except for
+ * \a one and those matching \a skip.
+ * @warning \a pattern must not contain %v.
+ * @param[in] from Client originating the command.
+ * @param[in] cmd Long name of command.
+ * @param[in] tok Short name of command.
+ * @param[in] to Destination channel.
+ * @param[in] one Client direction to skip (or NULL).
+ * @param[in] skip Bitmask of SKIP_NONOPS, SKIP_NONVOICES, SKIP_DEAF, SKIP_BURST.
+ * @param[in] pattern Format string for command arguments.
+ */
+void sendcmdto_channel_butone(struct Client *from, const char *cmd,
+			      const char *tok, struct Channel *to,
+			      struct Client *one, unsigned int skip,
+			      const char *pattern, ...)
+{
+  struct Membership *member;
+  struct VarData vd;
+  struct MsgBuf *user_mb;
+  struct MsgBuf *serv_mb;
+
+  vd.vd_format = pattern;
+
+  /* Build buffer to send to users */
+  va_start(vd.vd_args, pattern);
+  user_mb = msgq_make(0, skip & (SKIP_NONOPS | SKIP_NONVOICES) ? "%:#C %s @%v" : "%:#C %s %v",
+                      from, skip & (SKIP_NONOPS | SKIP_NONVOICES) ? MSG_NOTICE : cmd, &vd);
+  va_end(vd.vd_args);
+
+  /* Build buffer to send to servers */
+  va_start(vd.vd_args, pattern);
+  serv_mb = msgq_make(&me, "%C %s %v", from, tok, &vd);
+  va_end(vd.vd_args);
+
+  /* send buffer along! */
+  bump_sentalong(one);
+  for (member = to->members; member; member = member->next_member) {
+    /* skip one, zombies, and deaf users... */
+    if (IsZombie(member) ||
+        (skip & SKIP_DEAF && IsDeaf(member->user)) ||
+        (skip & SKIP_NONOPS && !IsChanOp(member)) ||
+        (skip & SKIP_NONVOICES && !IsChanOp(member) && !HasVoice(member)) ||
+        (skip & SKIP_BURST && IsBurstOrBurstAck(cli_from(member->user))) ||
+        cli_fd(cli_from(member->user)) < 0 ||
+        cli_sentalong(member->user) == sentalong_marker)
+      continue;
+    cli_sentalong(member->user) = sentalong_marker;
+
+    if (MyConnect(member->user)) /* pick right buffer to send */
+      send_buffer(member->user, user_mb, 0);
+    else
+      send_buffer(member->user, serv_mb, 0);
+  }
+
+  msgq_clean(user_mb);
+  msgq_clean(serv_mb);
+}
+
+/** Send a (prefixed) WALL of type \a type to all users except \a one.
+ * @warning \a pattern must not contain %v.
+ * @param[in] from Source of the command.
+ * @param[in] type One of WALL_DESYNCH, WALL_WALLOPS or WALL_WALLUSERS.
+ * @param[in] one Client direction to skip (or NULL).
+ * @param[in] pattern Format string for command arguments.
+ */
+void sendwallto_group_butone(struct Client *from, int type, struct Client *one,
+			     const char *pattern, ...)
+{
+  struct VarData vd;
+  struct Client *cptr;
+  struct MsgBuf *mb;
+  struct DLink *lp;
+  char *prefix=NULL;
+  char *tok=NULL;
+  int his_wallops;
+  int i;
+
+  vd.vd_format = pattern;
+
+  /* Build buffer to send to users */
+  va_start(vd.vd_args, pattern);
+  switch (type) {
+    	case WALL_DESYNCH:
+	  	prefix="";
+		tok=TOK_DESYNCH;
+		break;
+    	case WALL_WALLOPS:
+	  	prefix="* ";
+		tok=TOK_WALLOPS;
+		break;
+    	case WALL_WALLUSERS:
+	  	prefix="$ ";
+		tok=TOK_WALLUSERS;
+		break;
+	default:
+		assert(0);
+  }
+  mb = msgq_make(0, "%:#C " MSG_WALLOPS " :%s%v", from, prefix,&vd);
+  va_end(vd.vd_args);
+
+  /* send buffer along! */
+  his_wallops = feature_bool(FEAT_HIS_WALLOPS);
+  for (i = 0; i <= HighestFd; i++)
+  {
+    if (!(cptr = LocalClientArray[i]) ||
+	(cli_fd(cli_from(cptr)) < 0) ||
+	(type == WALL_DESYNCH && !SendDebug(cptr)) ||
+	(type == WALL_WALLOPS &&
+         (!SendWallops(cptr) || (his_wallops && !IsAnOper(cptr)))) ||
+        (type == WALL_WALLUSERS && !SendWallops(cptr)))
+      continue; /* skip it */
+    send_buffer(cptr, mb, 1);
+  }
+
+  msgq_clean(mb);
+
+  /* Build buffer to send to servers */
+  va_start(vd.vd_args, pattern);
+  mb = msgq_make(&me, "%C %s :%v", from, tok, &vd);
+  va_end(vd.vd_args);
+
+  /* send buffer along! */
+  for (lp = cli_serv(&me)->down; lp; lp = lp->next) {
+    if (one && lp->value.cptr == cli_from(one))
+      continue;
+    send_buffer(lp->value.cptr, mb, 1);
+  }
+
+  msgq_clean(mb);
+}
+
+/** Send a (prefixed) command to all users matching \a to as \a who.
+ * @warning \a pattern must not contain %v.
+ * @param[in] from Source of the command.
+ * @param[in] cmd Long name of command.
+ * @param[in] tok Short name of command.
+ * @param[in] to Destination host/server mask.
+ * @param[in] one Client direction to skip (or NULL).
+ * @param[in] who Type of match for \a to (either MATCH_HOST or MATCH_SERVER).
+ * @param[in] pattern Format string for command arguments.
+ */
+void sendcmdto_match_butone(struct Client *from, const char *cmd,
+			    const char *tok, const char *to,
+			    struct Client *one, unsigned int who,
+			    const char *pattern, ...)
+{
+  struct VarData vd;
+  struct Client *cptr;
+  struct MsgBuf *user_mb;
+  struct MsgBuf *serv_mb;
+
+  vd.vd_format = pattern;
+
+  /* Build buffer to send to users */
+  va_start(vd.vd_args, pattern);
+  user_mb = msgq_make(0, "%:#C %s %v", from, cmd, &vd);
+  va_end(vd.vd_args);
+
+  /* Build buffer to send to servers */
+  va_start(vd.vd_args, pattern);
+  serv_mb = msgq_make(&me, "%C %s %v", from, tok, &vd);
+  va_end(vd.vd_args);
+
+  /* send buffer along */
+  bump_sentalong(one);
+  for (cptr = GlobalClientList; cptr; cptr = cli_next(cptr)) {
+    if (!IsRegistered(cptr) || IsServer(cptr) || cli_fd(cli_from(cptr)) < 0 ||
+        cli_sentalong(cptr) == sentalong_marker ||
+        !match_it(from, cptr, to, who))
+      continue; /* skip it */
+    cli_sentalong(cptr) = sentalong_marker;
+
+    if (MyConnect(cptr)) /* send right buffer */
+      send_buffer(cptr, user_mb, 0);
+    else
+      send_buffer(cptr, serv_mb, 0);
+  }
+
+  msgq_clean(user_mb);
+  msgq_clean(serv_mb);
+}
+
+/** Send a server notice to all users subscribing to the indicated \a
+ * mask except for \a one.
+ * @param[in] one Client direction to skip (or NULL).
+ * @param[in] mask One of the SNO_* constants.
+ * @param[in] pattern Format string for server notice.
+ */
+void sendto_opmask_butone(struct Client *one, unsigned int mask,
+			  const char *pattern, ...)
+{
+  va_list vl;
+
+  va_start(vl, pattern);
+  vsendto_opmask_butone(one, mask, pattern, vl);
+  va_end(vl);
+}
+
+/** Send a server notice to all users subscribing to the indicated \a
+ * mask except for \a one, rate-limited to once per 30 seconds.
+ * @param[in] one Client direction to skip (or NULL).
+ * @param[in] mask One of the SNO_* constants.
+ * @param[in,out] rate Pointer to the last time the message was sent.
+ * @param[in] pattern Format string for server notice.
+ */
+void sendto_opmask_butone_ratelimited(struct Client *one, unsigned int mask,
+				      time_t *rate, const char *pattern, ...)
+{
+  va_list vl;
+
+  if ((CurrentTime - *rate) < 30)
+    return;
+  else
+    *rate = CurrentTime;
+
+  va_start(vl, pattern);
+  vsendto_opmask_butone(one, mask, pattern, vl);
+  va_end(vl);
+}
+
+
+/** Send a server notice to all users subscribing to the indicated \a
+ * mask except for \a one.
+ * @param[in] one Client direction to skip (or NULL).
+ * @param[in] mask One of the SNO_* constants.
+ * @param[in] pattern Format string for server notice.
+ * @param[in] vl Argument list for format string.
+ */
+void vsendto_opmask_butone(struct Client *one, unsigned int mask,
+			   const char *pattern, va_list vl)
+{
+  struct VarData vd;
+  struct MsgBuf *mb;
+  int i = 0; /* so that 1 points to opsarray[0] */
+  struct SLink *opslist;
+
+  while ((mask >>= 1))
+    i++;
+
+  if (!(opslist = opsarray[i]))
+    return;
+
+  /*
+   * build string; I don't want to bother with client nicknames, so I hope
+   * this is ok...
+   */
+  vd.vd_format = pattern;
+  va_copy(vd.vd_args, vl);
+  mb = msgq_make(0, ":%s " MSG_NOTICE " * :*** Notice -- %v", cli_name(&me),
+		 &vd);
+
+  for (; opslist; opslist = opslist->next)
+    if (opslist->value.cptr != one)
+      send_buffer(opslist->value.cptr, mb, 0);
+
+  msgq_clean(mb);
+}