1 |
/* |
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* ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd). |
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* send.c: Functions for sending messages. |
4 |
* |
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* Copyright (C) 2002 by the past and present ircd coders, and others. |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 |
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* USA |
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* |
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* $Id$ |
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*/ |
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|
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#include "stdinc.h" |
26 |
#include "tools.h" |
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#include "send.h" |
28 |
#include "channel.h" |
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#include "client.h" |
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#include "common.h" |
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#include "dbuf.h" |
32 |
#include "irc_string.h" |
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#include "ircd.h" |
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#include "handlers.h" |
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#include "numeric.h" |
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#include "fdlist.h" |
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#include "s_bsd.h" |
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#include "s_serv.h" |
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#include "sprintf_irc.h" |
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#include "s_conf.h" |
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#include "list.h" |
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#include "s_log.h" |
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#include "memory.h" |
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#include "hook.h" |
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#include "irc_getnameinfo.h" |
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#include "packet.h" |
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|
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#define LOG_BUFSIZE 2048 |
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|
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struct Callback *iosend_cb = NULL; |
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struct Callback *iosendctrl_cb = NULL; |
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|
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static void send_message(struct Client *, char *, int); |
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static void send_message_remote(struct Client *, struct Client *, char *, int); |
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|
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static unsigned long current_serial = 0L; |
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|
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/* send_format() |
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* |
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* inputs - buffer to format into |
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* - size of the buffer |
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* - format pattern to use |
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* - var args |
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* output - number of bytes formatted output |
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* side effects - modifies sendbuf |
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*/ |
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static inline int |
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send_format(char *lsendbuf, int bufsize, const char *pattern, va_list args) |
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{ |
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int len; |
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|
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/* |
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* from rfc1459 |
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* |
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* IRC messages are always lines of characters terminated with a CR-LF |
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* (Carriage Return - Line Feed) pair, and these messages shall not |
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* exceed 512 characters in length, counting all characters |
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* including the trailing CR-LF. |
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* Thus, there are 510 characters maximum allowed |
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* for the command and its parameters. There is no provision for |
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* continuation message lines. See section 7 for more details about |
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* current implementations. |
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*/ |
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len = vsnprintf(lsendbuf, bufsize - 1, pattern, args); |
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if (len > bufsize - 2) |
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len = bufsize - 2; /* required by some versions of vsnprintf */ |
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|
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lsendbuf[len++] = '\r'; |
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lsendbuf[len++] = '\n'; |
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return (len); |
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} |
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|
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/* |
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* iosend_default - append a packet to the client's sendq. |
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*/ |
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void * |
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iosend_default(va_list args) |
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{ |
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struct Client *to = va_arg(args, struct Client *); |
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int length = va_arg(args, int); |
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char *buf = va_arg(args, char *); |
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|
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dbuf_put(&to->localClient->buf_sendq, buf, length); |
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return NULL; |
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} |
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|
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/* |
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** send_message |
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** Internal utility which appends given buffer to the sockets |
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** sendq. |
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*/ |
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static void |
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send_message(struct Client *to, char *buf, int len) |
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{ |
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#ifdef INVARIANTS |
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if (IsMe(to)) |
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{ |
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sendto_realops_flags(UMODE_ALL, L_ALL, |
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"Trying to send message to myself!"); |
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return; |
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} |
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#endif |
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|
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if (dbuf_length(&to->localClient->buf_sendq) + len > get_sendq(to)) |
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{ |
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if (IsServer(to)) |
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sendto_realops_flags(UMODE_ALL, L_ALL, |
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"Max SendQ limit exceeded for %s: %lu > %lu", |
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get_client_name(to, HIDE_IP), |
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(unsigned long)(dbuf_length(&to->localClient->buf_sendq) + len), |
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get_sendq(to)); |
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if (IsClient(to)) |
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SetSendQExceeded(to); |
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dead_link_on_write(to, 0); |
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return; |
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} |
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|
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execute_callback(iosend_cb, to, len, buf); |
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|
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/* |
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** Update statistics. The following is slightly incorrect |
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** because it counts messages even if queued, but bytes |
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** only really sent. Queued bytes get updated in SendQueued. |
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*/ |
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++to->localClient->send.messages; |
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++me.localClient->send.messages; |
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|
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if (dbuf_length(&to->localClient->buf_sendq) > |
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(IsServer(to) ? (unsigned int) 1024 : (unsigned int) 4096)) |
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send_queued_write(to); |
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} |
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|
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/* send_message_remote() |
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* |
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* inputs - pointer to client from message is being sent |
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* - pointer to client to send to |
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* - pointer to preformatted buffer |
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* - length of input buffer |
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* output - none |
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* side effects - Despite the function name, this only sends to directly |
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* connected clients. |
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* |
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*/ |
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static void |
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send_message_remote(struct Client *to, struct Client *from, |
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char *buf, int len) |
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{ |
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if (!MyConnect(to)) |
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{ |
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sendto_realops_flags(UMODE_ALL, L_ALL, |
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"server send message to %s [%s] dropped from %s(Not local server)", |
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to->name, to->from->name, from->name); |
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return; |
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} |
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|
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if (ServerInfo.hub && IsCapable(to, CAP_LL)) |
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{ |
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if (((from->lazyLinkClientExists & |
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to->localClient->serverMask) == 0)) |
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client_burst_if_needed(to, from); |
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} |
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|
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/* Optimize by checking if (from && to) before everything */ |
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/* we set to->from up there.. */ |
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|
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if (!MyClient(from) && IsClient(to) && (to == from->from)) |
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{ |
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if (IsServer(from)) |
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{ |
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sendto_realops_flags(UMODE_ALL, L_ALL, |
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"Send message to %s [%s] dropped from %s(Fake Dir)", |
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to->name, to->from->name, from->name); |
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return; |
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} |
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|
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sendto_realops_flags(UMODE_ALL, L_ALL, |
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"Ghosted: %s[%s@%s] from %s[%s@%s] (%s)", |
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to->name, to->username, to->host, |
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from->name, from->username, from->host, |
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to->from->name); |
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|
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sendto_server(NULL, to, NULL, CAP_TS6, NOCAPS, NOFLAGS, |
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":%s KILL %s :%s (%s[%s@%s] Ghosted %s)", |
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me.id, to->name, me.name, to->name, |
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to->username, to->host, to->from->name); |
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sendto_server(NULL, to, NULL, NOCAPS, CAP_TS6, NOFLAGS, |
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":%s KILL %s :%s (%s[%s@%s] Ghosted %s)", |
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me.name, to->name, me.name, to->name, |
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to->username, to->host, to->from->name); |
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|
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SetKilled(to); |
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|
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if (IsClient(from)) |
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sendto_one(from, form_str(ERR_GHOSTEDCLIENT), |
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me.name, from->name, to->name, to->username, |
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to->host, to->from); |
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|
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exit_client(to, &me, "Ghosted client"); |
219 |
|
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return; |
221 |
} |
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|
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send_message(to, buf, len); |
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} |
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|
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/* |
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** sendq_unblocked |
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** Called when a socket is ready for writing. |
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*/ |
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void |
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sendq_unblocked(fde_t *fd, struct Client *client_p) |
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{ |
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ClearSendqBlocked(client_p); |
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/* let send_queued_write be executed by send_queued_all */ |
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|
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#ifdef HAVE_LIBCRYPTO |
237 |
if (fd->flags.pending_read) |
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{ |
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fd->flags.pending_read = 0; |
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read_packet(fd, client_p); |
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} |
242 |
#endif |
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} |
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|
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/* |
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** slinkq_unblocked |
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** Called when a server control socket is ready for writing. |
248 |
*/ |
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static void |
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slinkq_unblocked(fde_t *fd, struct Client *client_p) |
251 |
{ |
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ClearSlinkqBlocked(client_p); |
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send_queued_slink_write(client_p); |
254 |
} |
255 |
|
256 |
/* |
257 |
** send_queued_write |
258 |
** This is called when there is a chance that some output would |
259 |
** be possible. This attempts to empty the send queue as far as |
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** possible, and then if any data is left, a write is rescheduled. |
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*/ |
262 |
void |
263 |
send_queued_write(struct Client *to) |
264 |
{ |
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int retlen; |
266 |
struct dbuf_block *first; |
267 |
|
268 |
/* |
269 |
** Once socket is marked dead, we cannot start writing to it, |
270 |
** even if the error is removed... |
271 |
*/ |
272 |
if (IsDead(to) || IsSendqBlocked(to)) |
273 |
return; /* no use calling send() now */ |
274 |
|
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/* Next, lets try to write some data */ |
276 |
|
277 |
if (dbuf_length(&to->localClient->buf_sendq)) |
278 |
{ |
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do { |
280 |
first = to->localClient->buf_sendq.blocks.head->data; |
281 |
|
282 |
#ifdef HAVE_LIBCRYPTO |
283 |
if (to->localClient->fd.ssl) |
284 |
{ |
285 |
retlen = SSL_write(to->localClient->fd.ssl, first->data, first->size); |
286 |
|
287 |
/* translate openssl error codes, sigh */ |
288 |
if (retlen < 0) |
289 |
switch (SSL_get_error(to->localClient->fd.ssl, retlen)) |
290 |
{ |
291 |
case SSL_ERROR_WANT_READ: |
292 |
return; /* retry later, don't register for write events */ |
293 |
|
294 |
case SSL_ERROR_WANT_WRITE: |
295 |
errno = EWOULDBLOCK; |
296 |
case SSL_ERROR_SYSCALL: |
297 |
break; |
298 |
|
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default: |
300 |
retlen = errno = 0; /* either an SSL-specific error or EOF */ |
301 |
} |
302 |
} |
303 |
else |
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#endif |
305 |
retlen = send(to->localClient->fd.fd, first->data, first->size, 0); |
306 |
|
307 |
if (retlen <= 0) |
308 |
{ |
309 |
#ifdef _WIN32 |
310 |
errno = WSAGetLastError(); |
311 |
#endif |
312 |
break; |
313 |
} |
314 |
|
315 |
dbuf_delete(&to->localClient->buf_sendq, retlen); |
316 |
|
317 |
/* We have some data written .. update counters */ |
318 |
to->localClient->send.bytes += retlen; |
319 |
me.localClient->send.bytes += retlen; |
320 |
} while (dbuf_length(&to->localClient->buf_sendq)); |
321 |
|
322 |
if ((retlen < 0) && (ignoreErrno(errno))) |
323 |
{ |
324 |
/* we have a non-fatal error, reschedule a write */ |
325 |
SetSendqBlocked(to); |
326 |
comm_setselect(&to->localClient->fd, COMM_SELECT_WRITE, |
327 |
(PF *)sendq_unblocked, (void *)to, 0); |
328 |
} |
329 |
else if (retlen <= 0) |
330 |
{ |
331 |
dead_link_on_write(to, errno); |
332 |
return; |
333 |
} |
334 |
} |
335 |
} |
336 |
|
337 |
/* |
338 |
** send_queued_slink_write |
339 |
** This is called when there is a chance the some output would |
340 |
** be possible. This attempts to empty the send queue as far as |
341 |
** possible, and then if any data is left, a write is rescheduled. |
342 |
*/ |
343 |
void |
344 |
send_queued_slink_write(struct Client *to) |
345 |
{ |
346 |
int retlen; |
347 |
|
348 |
/* |
349 |
** Once socket is marked dead, we cannot start writing to it, |
350 |
** even if the error is removed... |
351 |
*/ |
352 |
if (IsDead(to) || IsSlinkqBlocked(to)) |
353 |
return; /* no use calling send() now */ |
354 |
|
355 |
/* Next, lets try to write some data */ |
356 |
if (to->localClient->slinkq != NULL) |
357 |
{ |
358 |
retlen = send(to->localClient->ctrlfd.fd, |
359 |
to->localClient->slinkq + to->localClient->slinkq_ofs, |
360 |
to->localClient->slinkq_len, 0); |
361 |
if (retlen < 0) |
362 |
{ |
363 |
/* If we have a fatal error */ |
364 |
if (!ignoreErrno(errno)) |
365 |
{ |
366 |
dead_link_on_write(to, errno); |
367 |
return; |
368 |
} |
369 |
} |
370 |
else if (retlen == 0) |
371 |
{ |
372 |
/* 0 bytes is an EOF .. */ |
373 |
dead_link_on_write(to, 0); |
374 |
return; |
375 |
} |
376 |
else |
377 |
{ |
378 |
execute_callback(iosendctrl_cb, to, retlen, |
379 |
to->localClient->slinkq + to->localClient->slinkq_ofs); |
380 |
to->localClient->slinkq_len -= retlen; |
381 |
|
382 |
assert(to->localClient->slinkq_len >= 0); |
383 |
if (to->localClient->slinkq_len) |
384 |
to->localClient->slinkq_ofs += retlen; |
385 |
else |
386 |
{ |
387 |
to->localClient->slinkq_ofs = 0; |
388 |
MyFree(to->localClient->slinkq); |
389 |
to->localClient->slinkq = NULL; |
390 |
} |
391 |
} |
392 |
|
393 |
/* Finally, if we have any more data, reschedule a write */ |
394 |
if (to->localClient->slinkq_len) |
395 |
{ |
396 |
SetSlinkqBlocked(to); |
397 |
comm_setselect(&to->localClient->ctrlfd, COMM_SELECT_WRITE, |
398 |
(PF *)slinkq_unblocked, (void *)to, 0); |
399 |
} |
400 |
} |
401 |
} |
402 |
|
403 |
/* send_queued_all() |
404 |
* |
405 |
* input - NONE |
406 |
* output - NONE |
407 |
* side effects - try to flush sendq of each client |
408 |
*/ |
409 |
void |
410 |
send_queued_all(void) |
411 |
{ |
412 |
dlink_node *ptr; |
413 |
|
414 |
/* Servers are processed first, mainly because this can generate |
415 |
* a notice to opers, which is to be delivered by this function. |
416 |
*/ |
417 |
DLINK_FOREACH(ptr, serv_list.head) |
418 |
send_queued_write((struct Client *) ptr->data); |
419 |
|
420 |
DLINK_FOREACH(ptr, unknown_list.head) |
421 |
send_queued_write((struct Client *) ptr->data); |
422 |
|
423 |
DLINK_FOREACH(ptr, local_client_list.head) |
424 |
send_queued_write((struct Client *) ptr->data); |
425 |
|
426 |
/* NOTE: This can still put clients on aborted_list; unfortunately, |
427 |
* exit_aborted_clients takes precedence over send_queued_all, |
428 |
* because exiting clients can generate server/oper traffic. |
429 |
* The easiest approach is dealing with aborted clients in the next I/O lap. |
430 |
* -adx |
431 |
*/ |
432 |
} |
433 |
|
434 |
/* sendto_one() |
435 |
* |
436 |
* inputs - pointer to destination client |
437 |
* - var args message |
438 |
* output - NONE |
439 |
* side effects - send message to single client |
440 |
*/ |
441 |
void |
442 |
sendto_one(struct Client *to, const char *pattern, ...) |
443 |
{ |
444 |
va_list args; |
445 |
char buffer[IRCD_BUFSIZE]; |
446 |
int len; |
447 |
|
448 |
if (to->from != NULL) |
449 |
to = to->from; |
450 |
if (IsDead(to)) |
451 |
return; /* This socket has already been marked as dead */ |
452 |
|
453 |
va_start(args, pattern); |
454 |
len = send_format(buffer, IRCD_BUFSIZE, pattern, args); |
455 |
va_end(args); |
456 |
|
457 |
send_message(to, buffer, len); |
458 |
} |
459 |
|
460 |
/* sendto_channel_butone() |
461 |
* |
462 |
* inputs - pointer to client(server) to NOT send message to |
463 |
* - pointer to client that is sending this message |
464 |
* - pointer to channel being sent to |
465 |
* - vargs message |
466 |
* output - NONE |
467 |
* side effects - message as given is sent to given channel members. |
468 |
* |
469 |
* WARNING - +D clients are ignored |
470 |
*/ |
471 |
void |
472 |
sendto_channel_butone(struct Client *one, struct Client *from, |
473 |
struct Channel *chptr, const char *command, |
474 |
const char *pattern, ...) |
475 |
{ |
476 |
va_list alocal, aremote, auid; |
477 |
char local_buf[IRCD_BUFSIZE]; |
478 |
char remote_buf[IRCD_BUFSIZE]; |
479 |
char uid_buf[IRCD_BUFSIZE]; |
480 |
int local_len, remote_len, uid_len; |
481 |
dlink_node *ptr; |
482 |
dlink_node *ptr_next; |
483 |
struct Client *target_p; |
484 |
|
485 |
if (IsServer(from)) |
486 |
local_len = ircsprintf(local_buf, ":%s %s %s ", |
487 |
from->name, command, chptr->chname); |
488 |
else |
489 |
local_len = ircsprintf(local_buf, ":%s!%s@%s %s %s ", |
490 |
from->name, from->username, from->host, |
491 |
command, chptr->chname); |
492 |
remote_len = ircsprintf(remote_buf, ":%s %s %s ", |
493 |
from->name, command, chptr->chname); |
494 |
uid_len = ircsprintf(uid_buf, ":%s %s %s ", |
495 |
ID(from), command, chptr->chname); |
496 |
|
497 |
va_start(alocal, pattern); |
498 |
va_start(aremote, pattern); |
499 |
va_start(auid, pattern); |
500 |
local_len += send_format(&local_buf[local_len], IRCD_BUFSIZE - local_len, |
501 |
pattern, alocal); |
502 |
remote_len += send_format(&remote_buf[remote_len], IRCD_BUFSIZE - remote_len, |
503 |
pattern, aremote); |
504 |
uid_len += send_format(&uid_buf[uid_len], IRCD_BUFSIZE - uid_len, pattern, |
505 |
auid); |
506 |
va_end(auid); |
507 |
va_end(aremote); |
508 |
va_end(alocal); |
509 |
|
510 |
++current_serial; |
511 |
|
512 |
DLINK_FOREACH_SAFE(ptr, ptr_next, chptr->members.head) |
513 |
{ |
514 |
target_p = ((struct Membership *)ptr->data)->client_p; |
515 |
assert(target_p != NULL); |
516 |
|
517 |
if (IsDefunct(target_p) || IsDeaf(target_p) || target_p->from == one) |
518 |
continue; |
519 |
|
520 |
if (MyClient(target_p)) |
521 |
{ |
522 |
if (target_p->serial != current_serial) |
523 |
{ |
524 |
send_message(target_p, local_buf, local_len); |
525 |
target_p->serial = current_serial; |
526 |
} |
527 |
} |
528 |
else |
529 |
{ |
530 |
/* Now check whether a message has been sent to this |
531 |
* remote link already |
532 |
*/ |
533 |
if (target_p->from->serial != current_serial) |
534 |
{ |
535 |
if (IsCapable(target_p->from, CAP_TS6)) |
536 |
send_message_remote(target_p->from, from, uid_buf, uid_len); |
537 |
else |
538 |
send_message_remote(target_p->from, from, remote_buf, remote_len); |
539 |
target_p->from->serial = current_serial; |
540 |
} |
541 |
} |
542 |
} |
543 |
} |
544 |
|
545 |
/* sendto_server() |
546 |
* |
547 |
* inputs - pointer to client to NOT send to |
548 |
* - pointer to source client required by LL (if any) |
549 |
* - pointer to channel required by LL (if any) |
550 |
* - caps or'd together which must ALL be present |
551 |
* - caps or'd together which must ALL NOT be present |
552 |
* - LL flags: LL_ICLIENT | LL_ICHAN |
553 |
* - printf style format string |
554 |
* - args to format string |
555 |
* output - NONE |
556 |
* side effects - Send a message to all connected servers, except the |
557 |
* client 'one' (if non-NULL), as long as the servers |
558 |
* support ALL capabs in 'caps', and NO capabs in 'nocaps'. |
559 |
* If the server is a lazylink client, then it must know |
560 |
* about source_p if non-NULL (unless LL_ICLIENT is specified, |
561 |
* when source_p will be introduced where required) and |
562 |
* chptr if non-NULL (unless LL_ICHANNEL is specified, when |
563 |
* chptr will be introduced where required). |
564 |
* Note: nothing will be introduced to a LazyLeaf unless |
565 |
* the message is actually sent. |
566 |
* |
567 |
* This function was written in an attempt to merge together the other |
568 |
* billion sendto_*serv*() functions, which sprung up with capabs, |
569 |
* lazylinks, uids, etc. |
570 |
* -davidt |
571 |
*/ |
572 |
void |
573 |
sendto_server(struct Client *one, struct Client *source_p, |
574 |
struct Channel *chptr, unsigned long caps, |
575 |
unsigned long nocaps, unsigned long llflags, |
576 |
const char *format, ...) |
577 |
{ |
578 |
va_list args; |
579 |
struct Client *client_p; |
580 |
dlink_node *ptr; |
581 |
char buffer[IRCD_BUFSIZE]; |
582 |
int len; |
583 |
|
584 |
if (chptr != NULL) |
585 |
{ |
586 |
if (chptr->chname[0] != '#') |
587 |
return; |
588 |
} |
589 |
|
590 |
va_start(args, format); |
591 |
len = send_format(buffer, IRCD_BUFSIZE, format, args); |
592 |
va_end(args); |
593 |
|
594 |
DLINK_FOREACH(ptr, serv_list.head) |
595 |
{ |
596 |
client_p = ptr->data; |
597 |
|
598 |
/* If dead already skip */ |
599 |
if (IsDead(client_p)) |
600 |
continue; |
601 |
/* check against 'one' */ |
602 |
if (one != NULL && (client_p == one->from)) |
603 |
continue; |
604 |
/* check we have required capabs */ |
605 |
if ((client_p->localClient->caps & caps) != caps) |
606 |
continue; |
607 |
/* check we don't have any forbidden capabs */ |
608 |
if ((client_p->localClient->caps & nocaps) != 0) |
609 |
continue; |
610 |
|
611 |
if (ServerInfo.hub && IsCapable(client_p, CAP_LL)) |
612 |
{ |
613 |
/* check LL channel */ |
614 |
if (chptr != NULL && |
615 |
((chptr->lazyLinkChannelExists & |
616 |
client_p->localClient->serverMask) == 0)) |
617 |
{ |
618 |
/* Only introduce the channel if we really will send this message */ |
619 |
if (!(llflags & LL_ICLIENT) && source_p && |
620 |
((source_p->lazyLinkClientExists & |
621 |
client_p->localClient->serverMask) == 0)) |
622 |
continue; /* we can't introduce the unknown source_p, skip */ |
623 |
|
624 |
if (llflags & LL_ICHAN) |
625 |
burst_channel(client_p, chptr); |
626 |
else |
627 |
continue; /* we can't introduce the unknown chptr, skip */ |
628 |
} |
629 |
/* check LL client */ |
630 |
if (source_p && |
631 |
((source_p->lazyLinkClientExists & |
632 |
client_p->localClient->serverMask) == 0)) |
633 |
{ |
634 |
if (llflags & LL_ICLIENT) |
635 |
client_burst_if_needed(client_p,source_p); |
636 |
else |
637 |
continue; /* we can't introduce the unknown source_p, skip */ |
638 |
} |
639 |
} |
640 |
send_message(client_p, buffer, len); |
641 |
} |
642 |
} |
643 |
|
644 |
/* sendto_common_channels_local() |
645 |
* |
646 |
* inputs - pointer to client |
647 |
* - pattern to send |
648 |
* output - NONE |
649 |
* side effects - Sends a message to all people on local server who are |
650 |
* in same channel with user. |
651 |
* used by m_nick.c and exit_one_client. |
652 |
*/ |
653 |
void |
654 |
sendto_common_channels_local(struct Client *user, int touser, |
655 |
const char *pattern, ...) |
656 |
{ |
657 |
va_list args; |
658 |
dlink_node *uptr; |
659 |
dlink_node *cptr; |
660 |
struct Channel *chptr; |
661 |
struct Membership *ms; |
662 |
struct Client *target_p; |
663 |
char buffer[IRCD_BUFSIZE]; |
664 |
int len; |
665 |
|
666 |
va_start(args, pattern); |
667 |
len = send_format(buffer, IRCD_BUFSIZE, pattern, args); |
668 |
va_end(args); |
669 |
|
670 |
++current_serial; |
671 |
|
672 |
DLINK_FOREACH(cptr, user->channel.head) |
673 |
{ |
674 |
chptr = ((struct Membership *) cptr->data)->chptr; |
675 |
assert(chptr != NULL); |
676 |
|
677 |
DLINK_FOREACH(uptr, chptr->locmembers.head) |
678 |
{ |
679 |
ms = uptr->data; |
680 |
target_p = ms->client_p; |
681 |
assert(target_p != NULL); |
682 |
|
683 |
if (target_p == user || IsDefunct(target_p) || |
684 |
target_p->serial == current_serial) |
685 |
continue; |
686 |
|
687 |
target_p->serial = current_serial; |
688 |
send_message(target_p, buffer, len); |
689 |
} |
690 |
} |
691 |
|
692 |
if (touser && MyConnect(user) && !IsDead(user) && |
693 |
user->serial != current_serial) |
694 |
send_message(user, buffer, len); |
695 |
} |
696 |
|
697 |
/* sendto_channel_local() |
698 |
* |
699 |
* inputs - member status mask, e.g. CHFL_CHANOP | CHFL_VOICE |
700 |
* - whether to ignore +D clients (YES/NO) |
701 |
* - pointer to channel to send to |
702 |
* - var args pattern |
703 |
* output - NONE |
704 |
* side effects - Send a message to all members of a channel that are |
705 |
* locally connected to this server. |
706 |
*/ |
707 |
void |
708 |
sendto_channel_local(int type, int nodeaf, struct Channel *chptr, |
709 |
const char *pattern, ...) |
710 |
{ |
711 |
va_list args; |
712 |
char buffer[IRCD_BUFSIZE]; |
713 |
int len; |
714 |
dlink_node *ptr; |
715 |
struct Membership *ms; |
716 |
struct Client *target_p; |
717 |
|
718 |
va_start(args, pattern); |
719 |
len = send_format(buffer, IRCD_BUFSIZE, pattern, args); |
720 |
va_end(args); |
721 |
|
722 |
DLINK_FOREACH(ptr, chptr->locmembers.head) |
723 |
{ |
724 |
ms = ptr->data; |
725 |
target_p = ms->client_p; |
726 |
|
727 |
if (type != 0 && (ms->flags & type) == 0) |
728 |
continue; |
729 |
|
730 |
if (IsDefunct(target_p) || (nodeaf && IsDeaf(target_p))) |
731 |
continue; |
732 |
|
733 |
send_message(target_p, buffer, len); |
734 |
} |
735 |
} |
736 |
|
737 |
/* sendto_channel_local_butone() |
738 |
* |
739 |
* inputs - pointer to client to NOT send message to |
740 |
* - member status mask, e.g. CHFL_CHANOP | CHFL_VOICE |
741 |
* - pointer to channel to send to |
742 |
* - var args pattern |
743 |
* output - NONE |
744 |
* side effects - Send a message to all members of a channel that are |
745 |
* locally connected to this server except one. |
746 |
* |
747 |
* WARNING - +D clients are omitted |
748 |
*/ |
749 |
void |
750 |
sendto_channel_local_butone(struct Client *one, int type, |
751 |
struct Channel *chptr, const char *pattern, ...) |
752 |
{ |
753 |
va_list args; |
754 |
char buffer[IRCD_BUFSIZE]; |
755 |
int len; |
756 |
struct Client *target_p; |
757 |
struct Membership *ms; |
758 |
dlink_node *ptr; |
759 |
|
760 |
va_start(args, pattern); |
761 |
len = send_format(buffer, IRCD_BUFSIZE, pattern, args); |
762 |
va_end(args); |
763 |
|
764 |
DLINK_FOREACH(ptr, chptr->locmembers.head) |
765 |
{ |
766 |
ms = ptr->data; |
767 |
target_p = ms->client_p; |
768 |
|
769 |
if (type != 0 && (ms->flags & type) == 0) |
770 |
continue; |
771 |
|
772 |
if (target_p == one || IsDefunct(target_p) || IsDeaf(target_p)) |
773 |
continue; |
774 |
send_message(target_p, buffer, len); |
775 |
} |
776 |
} |
777 |
|
778 |
|
779 |
/* sendto_channel_remote() |
780 |
* |
781 |
* inputs - Client not to send towards |
782 |
* - Client from whom message is from |
783 |
* - member status mask, e.g. CHFL_CHANOP | CHFL_VOICE |
784 |
* - pointer to channel to send to |
785 |
* - var args pattern |
786 |
* output - NONE |
787 |
* side effects - Send a message to all members of a channel that are |
788 |
* remote to this server. |
789 |
*/ |
790 |
void |
791 |
sendto_channel_remote(struct Client *one, struct Client *from, int type, int caps, |
792 |
int nocaps, struct Channel *chptr, const char *pattern, ...) |
793 |
{ |
794 |
va_list args; |
795 |
char buffer[IRCD_BUFSIZE]; |
796 |
int len; |
797 |
dlink_node *ptr; |
798 |
struct Client *target_p; |
799 |
struct Membership *ms; |
800 |
|
801 |
va_start(args, pattern); |
802 |
len = send_format(buffer, IRCD_BUFSIZE, pattern, args); |
803 |
va_end(args); |
804 |
|
805 |
++current_serial; |
806 |
|
807 |
DLINK_FOREACH(ptr, chptr->members.head) |
808 |
{ |
809 |
ms = ptr->data; |
810 |
target_p = ms->client_p; |
811 |
|
812 |
if (type != 0 && (ms->flags & type) == 0) |
813 |
continue; |
814 |
|
815 |
if (MyConnect(target_p)) |
816 |
continue; |
817 |
target_p = target_p->from; |
818 |
|
819 |
if (target_p == one->from || |
820 |
((target_p->from->localClient->caps & caps) != caps) || |
821 |
((target_p->from->localClient->caps & nocaps) != 0)) |
822 |
continue; |
823 |
if (target_p->from->serial != current_serial) |
824 |
{ |
825 |
send_message(target_p, buffer, len); |
826 |
target_p->from->serial = current_serial; |
827 |
} |
828 |
} |
829 |
} |
830 |
|
831 |
/* |
832 |
** match_it() and sendto_match_butone() ARE only used |
833 |
** to send a msg to all ppl on servers/hosts that match a specified mask |
834 |
** (used for enhanced PRIVMSGs) for opers |
835 |
** |
836 |
** addition -- Armin, 8jun90 (gruner@informatik.tu-muenchen.de) |
837 |
** |
838 |
*/ |
839 |
|
840 |
/* match_it() |
841 |
* |
842 |
* inputs - client pointer to match on |
843 |
* - actual mask to match |
844 |
* - what to match on, HOST or SERVER |
845 |
* output - 1 or 0 if match or not |
846 |
* side effects - NONE |
847 |
*/ |
848 |
static int |
849 |
match_it(const struct Client *one, const char *mask, int what) |
850 |
{ |
851 |
if (what == MATCH_HOST) |
852 |
return(match(mask, one->host)); |
853 |
|
854 |
return(match(mask, one->servptr->name)); |
855 |
} |
856 |
|
857 |
/* sendto_match_butone() |
858 |
* |
859 |
* Send to all clients which match the mask in a way defined on 'what'; |
860 |
* either by user hostname or user servername. |
861 |
* |
862 |
* ugh. ONLY used by m_message.c to send an "oper magic" message. ugh. |
863 |
*/ |
864 |
void |
865 |
sendto_match_butone(struct Client *one, struct Client *from, char *mask, |
866 |
int what, const char *pattern, ...) |
867 |
{ |
868 |
va_list alocal, aremote; |
869 |
struct Client *client_p; |
870 |
dlink_node *ptr, *ptr_next; |
871 |
char local_buf[IRCD_BUFSIZE], remote_buf[IRCD_BUFSIZE]; |
872 |
int local_len = ircsprintf(local_buf, ":%s!%s@%s ", from->name, |
873 |
from->username, from->host); |
874 |
int remote_len = ircsprintf(remote_buf, ":%s ", from->name); |
875 |
|
876 |
va_start(alocal, pattern); |
877 |
va_start(aremote, pattern); |
878 |
local_len += send_format(&local_buf[local_len], IRCD_BUFSIZE - local_len, |
879 |
pattern, alocal); |
880 |
remote_len += send_format(&remote_buf[remote_len], IRCD_BUFSIZE - remote_len, |
881 |
pattern, aremote); |
882 |
va_end(aremote); |
883 |
va_end(alocal); |
884 |
|
885 |
/* scan the local clients */ |
886 |
DLINK_FOREACH(ptr, local_client_list.head) |
887 |
{ |
888 |
client_p = ptr->data; |
889 |
|
890 |
if (client_p != one && !IsDefunct(client_p) && |
891 |
match_it(client_p, mask, what)) |
892 |
send_message(client_p, local_buf, local_len); |
893 |
} |
894 |
|
895 |
/* Now scan servers */ |
896 |
DLINK_FOREACH_SAFE(ptr, ptr_next, serv_list.head) |
897 |
{ |
898 |
client_p = ptr->data; |
899 |
|
900 |
/* |
901 |
* The old code looped through every client on the |
902 |
* network for each server to check if the |
903 |
* server (client_p) has at least 1 client matching |
904 |
* the mask, using something like: |
905 |
* |
906 |
* for (target_p = GlobalClientList; target_p; target_p = target_p->next) |
907 |
* if (IsRegisteredUser(target_p) && |
908 |
* match_it(target_p, mask, what) && |
909 |
* (target_p->from == client_p)) |
910 |
* vsendto_prefix_one(client_p, from, pattern, args); |
911 |
* |
912 |
* That way, we wouldn't send the message to |
913 |
* a server who didn't have a matching client. |
914 |
* However, on a network such as EFNet, that |
915 |
* code would have looped through about 50 |
916 |
* servers, and in each loop, loop through |
917 |
* about 50k clients as well, calling match() |
918 |
* in each nested loop. That is a very bad |
919 |
* thing cpu wise - just send the message |
920 |
* to every connected server and let that |
921 |
* server deal with it. |
922 |
* -wnder |
923 |
*/ |
924 |
if (client_p != one && !IsDefunct(client_p)) |
925 |
send_message_remote(client_p, from, remote_buf, remote_len); |
926 |
} |
927 |
} |
928 |
|
929 |
/* sendto_match_servs() |
930 |
* |
931 |
* inputs - source client |
932 |
* - mask to send to |
933 |
* - capab needed |
934 |
* - data |
935 |
* outputs - none |
936 |
* side effects - data sent to servers matching with capab |
937 |
*/ |
938 |
void |
939 |
sendto_match_servs(struct Client *source_p, const char *mask, int cap, |
940 |
const char *pattern, ...) |
941 |
{ |
942 |
va_list args; |
943 |
struct Client *target_p; |
944 |
dlink_node *ptr; |
945 |
char buffer[IRCD_BUFSIZE]; |
946 |
int found = 0; |
947 |
|
948 |
va_start(args, pattern); |
949 |
vsnprintf(buffer, sizeof(buffer), pattern, args); |
950 |
va_end(args); |
951 |
|
952 |
current_serial++; |
953 |
|
954 |
DLINK_FOREACH(ptr, global_serv_list.head) |
955 |
{ |
956 |
target_p = ptr->data; |
957 |
|
958 |
/* Do not attempt to send to ourselves, or the source */ |
959 |
if (IsMe(target_p) || target_p->from == source_p->from) |
960 |
continue; |
961 |
|
962 |
if (target_p->from->serial == current_serial) |
963 |
continue; |
964 |
|
965 |
if (match(mask, target_p->name)) |
966 |
{ |
967 |
/* |
968 |
* if we set the serial here, then we'll never do a |
969 |
* match() again, if !IsCapable() |
970 |
*/ |
971 |
target_p->from->serial = current_serial; |
972 |
found++; |
973 |
|
974 |
if (!IsCapable(target_p->from, cap)) |
975 |
continue; |
976 |
|
977 |
sendto_anywhere(target_p, source_p, "%s", buffer); |
978 |
} |
979 |
} |
980 |
} |
981 |
|
982 |
/* sendto_anywhere() |
983 |
* |
984 |
* inputs - pointer to dest client |
985 |
* - pointer to from client |
986 |
* - varags |
987 |
* output - NONE |
988 |
* side effects - less efficient than sendto_remote and sendto_one |
989 |
* but useful when one does not know where target "lives" |
990 |
*/ |
991 |
void |
992 |
sendto_anywhere(struct Client *to, struct Client *from, |
993 |
const char *pattern, ...) |
994 |
{ |
995 |
va_list args; |
996 |
char buffer[IRCD_BUFSIZE]; |
997 |
int len; |
998 |
struct Client *send_to = (to->from != NULL ? to->from : to); |
999 |
|
1000 |
if (IsDead(send_to)) |
1001 |
return; |
1002 |
|
1003 |
if (MyClient(to)) |
1004 |
{ |
1005 |
if (IsServer(from)) |
1006 |
{ |
1007 |
if (IsCapable(to, CAP_TS6) && HasID(from)) |
1008 |
len = ircsprintf(buffer, ":%s ", from->id); |
1009 |
else |
1010 |
len = ircsprintf(buffer, ":%s ", from->name); |
1011 |
} |
1012 |
else |
1013 |
len = ircsprintf(buffer, ":%s!%s@%s ", |
1014 |
from->name, from->username, from->host); |
1015 |
} |
1016 |
else len = ircsprintf(buffer, ":%s ", ID_or_name(from, send_to)); |
1017 |
|
1018 |
va_start(args, pattern); |
1019 |
len += send_format(&buffer[len], IRCD_BUFSIZE - len, pattern, args); |
1020 |
va_end(args); |
1021 |
|
1022 |
if(MyClient(to)) |
1023 |
send_message(send_to, buffer, len); |
1024 |
else |
1025 |
send_message_remote(send_to, from, buffer, len); |
1026 |
} |
1027 |
|
1028 |
/* sendto_realops_flags() |
1029 |
* |
1030 |
* inputs - flag types of messages to show to real opers |
1031 |
* - flag indicating opers/admins |
1032 |
* - var args input message |
1033 |
* output - NONE |
1034 |
* side effects - Send to *local* ops only but NOT +s nonopers. |
1035 |
*/ |
1036 |
void |
1037 |
sendto_realops_flags(unsigned int flags, int level, const char *pattern, ...) |
1038 |
{ |
1039 |
struct Client *client_p; |
1040 |
char nbuf[IRCD_BUFSIZE]; |
1041 |
dlink_node *ptr; |
1042 |
va_list args; |
1043 |
|
1044 |
va_start(args, pattern); |
1045 |
vsnprintf(nbuf, IRCD_BUFSIZE, pattern, args); |
1046 |
va_end(args); |
1047 |
|
1048 |
DLINK_FOREACH(ptr, oper_list.head) |
1049 |
{ |
1050 |
client_p = ptr->data; |
1051 |
assert(client_p->umodes & UMODE_OPER); |
1052 |
|
1053 |
/* If we're sending it to opers and theyre an admin, skip. |
1054 |
* If we're sending it to admins, and theyre not, skip. |
1055 |
*/ |
1056 |
if (((level == L_ADMIN) && !IsAdmin(client_p)) || |
1057 |
((level == L_OPER) && IsAdmin(client_p))) |
1058 |
continue; |
1059 |
|
1060 |
if (client_p->umodes & flags) |
1061 |
sendto_one(client_p, ":%s NOTICE %s :*** Notice -- %s", |
1062 |
me.name, client_p->name, nbuf); |
1063 |
} |
1064 |
} |
1065 |
|
1066 |
/* sendto_wallops_flags() |
1067 |
* |
1068 |
* inputs - flag types of messages to show to real opers |
1069 |
* - client sending request |
1070 |
* - var args input message |
1071 |
* output - NONE |
1072 |
* side effects - Send a wallops to local opers |
1073 |
*/ |
1074 |
void |
1075 |
sendto_wallops_flags(unsigned int flags, struct Client *source_p, |
1076 |
const char *pattern, ...) |
1077 |
{ |
1078 |
struct Client *client_p; |
1079 |
dlink_node *ptr; |
1080 |
va_list args; |
1081 |
char buffer[IRCD_BUFSIZE]; |
1082 |
int len; |
1083 |
|
1084 |
if (IsClient(source_p)) |
1085 |
len = ircsprintf(buffer, ":%s!%s@%s WALLOPS :", |
1086 |
source_p->name, source_p->username, source_p->host); |
1087 |
else |
1088 |
len = ircsprintf(buffer, ":%s WALLOPS :", source_p->name); |
1089 |
|
1090 |
va_start(args, pattern); |
1091 |
len += send_format(&buffer[len], IRCD_BUFSIZE - len, pattern, args); |
1092 |
va_end(args); |
1093 |
|
1094 |
DLINK_FOREACH(ptr, oper_list.head) |
1095 |
{ |
1096 |
client_p = ptr->data; |
1097 |
assert(client_p->umodes & UMODE_OPER); |
1098 |
|
1099 |
if ((client_p->umodes & flags) && !IsDefunct(client_p)) |
1100 |
send_message(client_p, buffer, len); |
1101 |
} |
1102 |
} |
1103 |
|
1104 |
/* ts_warn() |
1105 |
* |
1106 |
* inputs - var args message |
1107 |
* output - NONE |
1108 |
* side effects - Call sendto_realops_flags, with some flood checking |
1109 |
* (at most 5 warnings every 5 seconds) |
1110 |
*/ |
1111 |
void |
1112 |
ts_warn(const char *pattern, ...) |
1113 |
{ |
1114 |
va_list args; |
1115 |
char buffer[LOG_BUFSIZE]; |
1116 |
static time_t last = 0; |
1117 |
static int warnings = 0; |
1118 |
|
1119 |
/* |
1120 |
** if we're running with TS_WARNINGS enabled and someone does |
1121 |
** something silly like (remotely) connecting a nonTS server, |
1122 |
** we'll get a ton of warnings, so we make sure we don't send |
1123 |
** more than 5 every 5 seconds. -orabidoo |
1124 |
*/ |
1125 |
|
1126 |
if (CurrentTime - last < 5) |
1127 |
{ |
1128 |
if (++warnings > 5) |
1129 |
return; |
1130 |
} |
1131 |
else |
1132 |
{ |
1133 |
last = CurrentTime; |
1134 |
warnings = 0; |
1135 |
} |
1136 |
|
1137 |
va_start(args, pattern); |
1138 |
vsprintf_irc(buffer, pattern, args); |
1139 |
va_end(args); |
1140 |
|
1141 |
sendto_realops_flags(UMODE_ALL, L_ALL, "%s", buffer); |
1142 |
ilog(L_CRIT, "%s", buffer); |
1143 |
} |
1144 |
|
1145 |
/* kill_client() |
1146 |
* |
1147 |
* inputs - client to send kill towards |
1148 |
* - pointer to client to kill |
1149 |
* - reason for kill |
1150 |
* output - NONE |
1151 |
* side effects - NONE |
1152 |
*/ |
1153 |
void |
1154 |
kill_client(struct Client *client_p, struct Client *diedie, |
1155 |
const char *pattern, ...) |
1156 |
{ |
1157 |
va_list args; |
1158 |
char buffer[IRCD_BUFSIZE]; |
1159 |
int len; |
1160 |
|
1161 |
if (client_p->from != NULL) |
1162 |
client_p = client_p->from; |
1163 |
if (IsDead(client_p)) |
1164 |
return; |
1165 |
|
1166 |
len = ircsprintf(buffer, ":%s KILL %s :", ID_or_name(&me, client_p->from), |
1167 |
ID_or_name(diedie, client_p)); |
1168 |
|
1169 |
va_start(args, pattern); |
1170 |
len += send_format(&buffer[len], IRCD_BUFSIZE - len, pattern, args); |
1171 |
va_end(args); |
1172 |
|
1173 |
send_message(client_p, buffer, len); |
1174 |
} |
1175 |
|
1176 |
/* kill_client_ll_serv_butone() |
1177 |
* |
1178 |
* inputs - pointer to client to not send to |
1179 |
* - pointer to client to kill |
1180 |
* output - NONE |
1181 |
* side effects - Send a KILL for the given client |
1182 |
* message to all connected servers |
1183 |
* except the client 'one'. Also deal with |
1184 |
* client being unknown to leaf, as in lazylink... |
1185 |
*/ |
1186 |
void |
1187 |
kill_client_ll_serv_butone(struct Client *one, struct Client *source_p, |
1188 |
const char *pattern, ...) |
1189 |
{ |
1190 |
va_list args; |
1191 |
int have_uid = 0; |
1192 |
struct Client *client_p; |
1193 |
dlink_node *ptr; |
1194 |
char buf_uid[IRCD_BUFSIZE], buf_nick[IRCD_BUFSIZE]; |
1195 |
int len_uid = 0, len_nick; |
1196 |
|
1197 |
if (HasID(source_p) && (me.id[0] != '\0')) |
1198 |
{ |
1199 |
have_uid = 1; |
1200 |
va_start(args, pattern); |
1201 |
len_uid = ircsprintf(buf_uid, ":%s KILL %s :", me.id, ID(source_p)); |
1202 |
len_uid += send_format(&buf_uid[len_uid], IRCD_BUFSIZE - len_uid, pattern, |
1203 |
args); |
1204 |
va_end(args); |
1205 |
} |
1206 |
|
1207 |
va_start(args, pattern); |
1208 |
len_nick = ircsprintf(buf_nick, ":%s KILL %s :", me.name, source_p->name); |
1209 |
len_nick += send_format(&buf_nick[len_nick], IRCD_BUFSIZE - len_nick, pattern, |
1210 |
args); |
1211 |
va_end(args); |
1212 |
|
1213 |
DLINK_FOREACH(ptr, serv_list.head) |
1214 |
{ |
1215 |
client_p = ptr->data; |
1216 |
|
1217 |
if (one != NULL && (client_p == one->from)) |
1218 |
continue; |
1219 |
if (IsDefunct(client_p)) |
1220 |
continue; |
1221 |
|
1222 |
/* XXX perhaps IsCapable should test for localClient itself ? -db */ |
1223 |
if (client_p->localClient == NULL || !IsCapable(client_p, CAP_LL) || |
1224 |
!ServerInfo.hub || |
1225 |
(source_p->lazyLinkClientExists & client_p->localClient->serverMask)) |
1226 |
{ |
1227 |
if (have_uid && IsCapable(client_p, CAP_TS6)) |
1228 |
send_message(client_p, buf_uid, len_uid); |
1229 |
else |
1230 |
send_message(client_p, buf_nick, len_nick); |
1231 |
} |
1232 |
} |
1233 |
} |