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" |
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#include "tools.h" |
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#include "send.h" |
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#include "channel.h" |
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#include "client.h" |
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#include "common.h" |
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#include "dbuf.h" |
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#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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assert(!IsMe(to)); |
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assert(to != &me); |
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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"); |
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|
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return; |
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} |
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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 */ |
229 |
|
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#ifdef HAVE_LIBCRYPTO |
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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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} |
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#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. |
242 |
*/ |
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static void |
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slinkq_unblocked(fde_t *fd, struct Client *client_p) |
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{ |
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ClearSlinkqBlocked(client_p); |
247 |
send_queued_slink_write(client_p); |
248 |
} |
249 |
|
250 |
/* |
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** send_queued_write |
252 |
** This is called when there is a chance that some output would |
253 |
** 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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*/ |
256 |
void |
257 |
send_queued_write(struct Client *to) |
258 |
{ |
259 |
int retlen; |
260 |
struct dbuf_block *first; |
261 |
|
262 |
/* |
263 |
** Once socket is marked dead, we cannot start writing to it, |
264 |
** even if the error is removed... |
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*/ |
266 |
if (IsDead(to) || IsSendqBlocked(to)) |
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return; /* no use calling send() now */ |
268 |
|
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/* Next, lets try to write some data */ |
270 |
|
271 |
if (dbuf_length(&to->localClient->buf_sendq)) |
272 |
{ |
273 |
do { |
274 |
first = to->localClient->buf_sendq.blocks.head->data; |
275 |
|
276 |
#ifdef HAVE_LIBCRYPTO |
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if (to->localClient->fd.ssl) |
278 |
{ |
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retlen = SSL_write(to->localClient->fd.ssl, first->data, first->size); |
280 |
|
281 |
/* translate openssl error codes, sigh */ |
282 |
if (retlen < 0) |
283 |
switch (SSL_get_error(to->localClient->fd.ssl, retlen)) |
284 |
{ |
285 |
case SSL_ERROR_WANT_READ: |
286 |
return; /* retry later, don't register for write events */ |
287 |
|
288 |
case SSL_ERROR_WANT_WRITE: |
289 |
errno = EWOULDBLOCK; |
290 |
case SSL_ERROR_SYSCALL: |
291 |
break; |
292 |
case SSL_ERROR_SSL: |
293 |
if (errno == EAGAIN) |
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break; |
295 |
default: |
296 |
retlen = errno = 0; /* either an SSL-specific error or EOF */ |
297 |
} |
298 |
} |
299 |
else |
300 |
#endif |
301 |
retlen = send(to->localClient->fd.fd, first->data, first->size, 0); |
302 |
|
303 |
if (retlen <= 0) |
304 |
{ |
305 |
#ifdef _WIN32 |
306 |
errno = WSAGetLastError(); |
307 |
#endif |
308 |
break; |
309 |
} |
310 |
|
311 |
dbuf_delete(&to->localClient->buf_sendq, retlen); |
312 |
|
313 |
/* We have some data written .. update counters */ |
314 |
to->localClient->send.bytes += retlen; |
315 |
me.localClient->send.bytes += retlen; |
316 |
} while (dbuf_length(&to->localClient->buf_sendq)); |
317 |
|
318 |
if ((retlen < 0) && (ignoreErrno(errno))) |
319 |
{ |
320 |
/* we have a non-fatal error, reschedule a write */ |
321 |
SetSendqBlocked(to); |
322 |
comm_setselect(&to->localClient->fd, COMM_SELECT_WRITE, |
323 |
(PF *)sendq_unblocked, (void *)to, 0); |
324 |
} |
325 |
else if (retlen <= 0) |
326 |
{ |
327 |
dead_link_on_write(to, errno); |
328 |
return; |
329 |
} |
330 |
} |
331 |
} |
332 |
|
333 |
/* |
334 |
** send_queued_slink_write |
335 |
** This is called when there is a chance the some output would |
336 |
** be possible. This attempts to empty the send queue as far as |
337 |
** possible, and then if any data is left, a write is rescheduled. |
338 |
*/ |
339 |
void |
340 |
send_queued_slink_write(struct Client *to) |
341 |
{ |
342 |
int retlen; |
343 |
|
344 |
/* |
345 |
** Once socket is marked dead, we cannot start writing to it, |
346 |
** even if the error is removed... |
347 |
*/ |
348 |
if (IsDead(to) || IsSlinkqBlocked(to)) |
349 |
return; /* no use calling send() now */ |
350 |
|
351 |
/* Next, lets try to write some data */ |
352 |
if (to->localClient->slinkq != NULL) |
353 |
{ |
354 |
retlen = send(to->localClient->ctrlfd.fd, |
355 |
to->localClient->slinkq + to->localClient->slinkq_ofs, |
356 |
to->localClient->slinkq_len, 0); |
357 |
if (retlen < 0) |
358 |
{ |
359 |
/* If we have a fatal error */ |
360 |
if (!ignoreErrno(errno)) |
361 |
{ |
362 |
dead_link_on_write(to, errno); |
363 |
return; |
364 |
} |
365 |
} |
366 |
else if (retlen == 0) |
367 |
{ |
368 |
/* 0 bytes is an EOF .. */ |
369 |
dead_link_on_write(to, 0); |
370 |
return; |
371 |
} |
372 |
else |
373 |
{ |
374 |
execute_callback(iosendctrl_cb, to, retlen, |
375 |
to->localClient->slinkq + to->localClient->slinkq_ofs); |
376 |
to->localClient->slinkq_len -= retlen; |
377 |
|
378 |
assert(to->localClient->slinkq_len >= 0); |
379 |
if (to->localClient->slinkq_len) |
380 |
to->localClient->slinkq_ofs += retlen; |
381 |
else |
382 |
{ |
383 |
to->localClient->slinkq_ofs = 0; |
384 |
MyFree(to->localClient->slinkq); |
385 |
to->localClient->slinkq = NULL; |
386 |
} |
387 |
} |
388 |
|
389 |
/* Finally, if we have any more data, reschedule a write */ |
390 |
if (to->localClient->slinkq_len) |
391 |
{ |
392 |
SetSlinkqBlocked(to); |
393 |
comm_setselect(&to->localClient->ctrlfd, COMM_SELECT_WRITE, |
394 |
(PF *)slinkq_unblocked, (void *)to, 0); |
395 |
} |
396 |
} |
397 |
} |
398 |
|
399 |
/* send_queued_all() |
400 |
* |
401 |
* input - NONE |
402 |
* output - NONE |
403 |
* side effects - try to flush sendq of each client |
404 |
*/ |
405 |
void |
406 |
send_queued_all(void) |
407 |
{ |
408 |
dlink_node *ptr; |
409 |
|
410 |
/* Servers are processed first, mainly because this can generate |
411 |
* a notice to opers, which is to be delivered by this function. |
412 |
*/ |
413 |
DLINK_FOREACH(ptr, serv_list.head) |
414 |
send_queued_write((struct Client *) ptr->data); |
415 |
|
416 |
DLINK_FOREACH(ptr, unknown_list.head) |
417 |
send_queued_write((struct Client *) ptr->data); |
418 |
|
419 |
DLINK_FOREACH(ptr, local_client_list.head) |
420 |
send_queued_write((struct Client *) ptr->data); |
421 |
|
422 |
/* NOTE: This can still put clients on aborted_list; unfortunately, |
423 |
* exit_aborted_clients takes precedence over send_queued_all, |
424 |
* because exiting clients can generate server/oper traffic. |
425 |
* The easiest approach is dealing with aborted clients in the next I/O lap. |
426 |
* -adx |
427 |
*/ |
428 |
} |
429 |
|
430 |
/* sendto_one() |
431 |
* |
432 |
* inputs - pointer to destination client |
433 |
* - var args message |
434 |
* output - NONE |
435 |
* side effects - send message to single client |
436 |
*/ |
437 |
void |
438 |
sendto_one(struct Client *to, const char *pattern, ...) |
439 |
{ |
440 |
va_list args; |
441 |
char buffer[IRCD_BUFSIZE]; |
442 |
int len; |
443 |
|
444 |
if (to->from != NULL) |
445 |
to = to->from; |
446 |
if (IsDead(to)) |
447 |
return; /* This socket has already been marked as dead */ |
448 |
|
449 |
va_start(args, pattern); |
450 |
len = send_format(buffer, IRCD_BUFSIZE, pattern, args); |
451 |
va_end(args); |
452 |
|
453 |
send_message(to, buffer, len); |
454 |
} |
455 |
|
456 |
/* sendto_channel_butone() |
457 |
* |
458 |
* inputs - pointer to client(server) to NOT send message to |
459 |
* - pointer to client that is sending this message |
460 |
* - pointer to channel being sent to |
461 |
* - vargs message |
462 |
* output - NONE |
463 |
* side effects - message as given is sent to given channel members. |
464 |
* |
465 |
* WARNING - +D clients are ignored |
466 |
*/ |
467 |
void |
468 |
sendto_channel_butone(struct Client *one, struct Client *from, |
469 |
struct Channel *chptr, const char *command, |
470 |
const char *pattern, ...) |
471 |
{ |
472 |
va_list alocal, aremote, auid; |
473 |
char local_buf[IRCD_BUFSIZE]; |
474 |
char remote_buf[IRCD_BUFSIZE]; |
475 |
char uid_buf[IRCD_BUFSIZE]; |
476 |
int local_len, remote_len, uid_len; |
477 |
dlink_node *ptr; |
478 |
dlink_node *ptr_next; |
479 |
struct Client *target_p; |
480 |
|
481 |
if (IsServer(from)) |
482 |
local_len = ircsprintf(local_buf, ":%s %s %s ", |
483 |
from->name, command, chptr->chname); |
484 |
else |
485 |
local_len = ircsprintf(local_buf, ":%s!%s@%s %s %s ", |
486 |
from->name, from->username, from->host, |
487 |
command, chptr->chname); |
488 |
remote_len = ircsprintf(remote_buf, ":%s %s %s ", |
489 |
from->name, command, chptr->chname); |
490 |
uid_len = ircsprintf(uid_buf, ":%s %s %s ", |
491 |
ID(from), command, chptr->chname); |
492 |
|
493 |
va_start(alocal, pattern); |
494 |
va_start(aremote, pattern); |
495 |
va_start(auid, pattern); |
496 |
local_len += send_format(&local_buf[local_len], IRCD_BUFSIZE - local_len, |
497 |
pattern, alocal); |
498 |
remote_len += send_format(&remote_buf[remote_len], IRCD_BUFSIZE - remote_len, |
499 |
pattern, aremote); |
500 |
uid_len += send_format(&uid_buf[uid_len], IRCD_BUFSIZE - uid_len, pattern, |
501 |
auid); |
502 |
va_end(auid); |
503 |
va_end(aremote); |
504 |
va_end(alocal); |
505 |
|
506 |
++current_serial; |
507 |
|
508 |
DLINK_FOREACH_SAFE(ptr, ptr_next, chptr->members.head) |
509 |
{ |
510 |
target_p = ((struct Membership *)ptr->data)->client_p; |
511 |
assert(target_p != NULL); |
512 |
|
513 |
if (IsDefunct(target_p) || IsDeaf(target_p) || target_p->from == one) |
514 |
continue; |
515 |
|
516 |
if (MyClient(target_p)) |
517 |
{ |
518 |
if (target_p->serial != current_serial) |
519 |
{ |
520 |
send_message(target_p, local_buf, local_len); |
521 |
target_p->serial = current_serial; |
522 |
} |
523 |
} |
524 |
else |
525 |
{ |
526 |
/* Now check whether a message has been sent to this |
527 |
* remote link already |
528 |
*/ |
529 |
if (target_p->from->serial != current_serial) |
530 |
{ |
531 |
if (IsCapable(target_p->from, CAP_TS6)) |
532 |
send_message_remote(target_p->from, from, uid_buf, uid_len); |
533 |
else |
534 |
send_message_remote(target_p->from, from, remote_buf, remote_len); |
535 |
target_p->from->serial = current_serial; |
536 |
} |
537 |
} |
538 |
} |
539 |
} |
540 |
|
541 |
/* sendto_server() |
542 |
* |
543 |
* inputs - pointer to client to NOT send to |
544 |
* - pointer to source client required by LL (if any) |
545 |
* - pointer to channel required by LL (if any) |
546 |
* - caps or'd together which must ALL be present |
547 |
* - caps or'd together which must ALL NOT be present |
548 |
* - LL flags: LL_ICLIENT | LL_ICHAN |
549 |
* - printf style format string |
550 |
* - args to format string |
551 |
* output - NONE |
552 |
* side effects - Send a message to all connected servers, except the |
553 |
* client 'one' (if non-NULL), as long as the servers |
554 |
* support ALL capabs in 'caps', and NO capabs in 'nocaps'. |
555 |
* If the server is a lazylink client, then it must know |
556 |
* about source_p if non-NULL (unless LL_ICLIENT is specified, |
557 |
* when source_p will be introduced where required) and |
558 |
* chptr if non-NULL (unless LL_ICHANNEL is specified, when |
559 |
* chptr will be introduced where required). |
560 |
* Note: nothing will be introduced to a LazyLeaf unless |
561 |
* the message is actually sent. |
562 |
* |
563 |
* This function was written in an attempt to merge together the other |
564 |
* billion sendto_*serv*() functions, which sprung up with capabs, |
565 |
* lazylinks, uids, etc. |
566 |
* -davidt |
567 |
*/ |
568 |
void |
569 |
sendto_server(struct Client *one, struct Client *source_p, |
570 |
struct Channel *chptr, unsigned long caps, |
571 |
unsigned long nocaps, unsigned long llflags, |
572 |
const char *format, ...) |
573 |
{ |
574 |
va_list args; |
575 |
struct Client *client_p; |
576 |
dlink_node *ptr; |
577 |
char buffer[IRCD_BUFSIZE]; |
578 |
int len; |
579 |
|
580 |
if (chptr != NULL) |
581 |
{ |
582 |
if (chptr->chname[0] != '#') |
583 |
return; |
584 |
} |
585 |
|
586 |
va_start(args, format); |
587 |
len = send_format(buffer, IRCD_BUFSIZE, format, args); |
588 |
va_end(args); |
589 |
|
590 |
DLINK_FOREACH(ptr, serv_list.head) |
591 |
{ |
592 |
client_p = ptr->data; |
593 |
|
594 |
/* If dead already skip */ |
595 |
if (IsDead(client_p)) |
596 |
continue; |
597 |
/* check against 'one' */ |
598 |
if (one != NULL && (client_p == one->from)) |
599 |
continue; |
600 |
/* check we have required capabs */ |
601 |
if ((client_p->localClient->caps & caps) != caps) |
602 |
continue; |
603 |
/* check we don't have any forbidden capabs */ |
604 |
if ((client_p->localClient->caps & nocaps) != 0) |
605 |
continue; |
606 |
|
607 |
if (ServerInfo.hub && IsCapable(client_p, CAP_LL)) |
608 |
{ |
609 |
/* check LL channel */ |
610 |
if (chptr != NULL && |
611 |
((chptr->lazyLinkChannelExists & |
612 |
client_p->localClient->serverMask) == 0)) |
613 |
{ |
614 |
/* Only introduce the channel if we really will send this message */ |
615 |
if (!(llflags & LL_ICLIENT) && source_p && |
616 |
((source_p->lazyLinkClientExists & |
617 |
client_p->localClient->serverMask) == 0)) |
618 |
continue; /* we can't introduce the unknown source_p, skip */ |
619 |
|
620 |
if (llflags & LL_ICHAN) |
621 |
burst_channel(client_p, chptr); |
622 |
else |
623 |
continue; /* we can't introduce the unknown chptr, skip */ |
624 |
} |
625 |
/* check LL client */ |
626 |
if (source_p && |
627 |
((source_p->lazyLinkClientExists & |
628 |
client_p->localClient->serverMask) == 0)) |
629 |
{ |
630 |
if (llflags & LL_ICLIENT) |
631 |
client_burst_if_needed(client_p,source_p); |
632 |
else |
633 |
continue; /* we can't introduce the unknown source_p, skip */ |
634 |
} |
635 |
} |
636 |
send_message(client_p, buffer, len); |
637 |
} |
638 |
} |
639 |
|
640 |
/* sendto_common_channels_local() |
641 |
* |
642 |
* inputs - pointer to client |
643 |
* - pattern to send |
644 |
* output - NONE |
645 |
* side effects - Sends a message to all people on local server who are |
646 |
* in same channel with user. |
647 |
* used by m_nick.c and exit_one_client. |
648 |
*/ |
649 |
void |
650 |
sendto_common_channels_local(struct Client *user, int touser, |
651 |
const char *pattern, ...) |
652 |
{ |
653 |
va_list args; |
654 |
dlink_node *uptr; |
655 |
dlink_node *cptr; |
656 |
struct Channel *chptr; |
657 |
struct Membership *ms; |
658 |
struct Client *target_p; |
659 |
char buffer[IRCD_BUFSIZE]; |
660 |
int len; |
661 |
|
662 |
va_start(args, pattern); |
663 |
len = send_format(buffer, IRCD_BUFSIZE, pattern, args); |
664 |
va_end(args); |
665 |
|
666 |
++current_serial; |
667 |
|
668 |
DLINK_FOREACH(cptr, user->channel.head) |
669 |
{ |
670 |
chptr = ((struct Membership *) cptr->data)->chptr; |
671 |
assert(chptr != NULL); |
672 |
|
673 |
DLINK_FOREACH(uptr, chptr->members.head) |
674 |
{ |
675 |
ms = uptr->data; |
676 |
target_p = ms->client_p; |
677 |
assert(target_p != NULL); |
678 |
|
679 |
if (!MyConnect(target_p) || target_p == user || IsDefunct(target_p) || |
680 |
target_p->serial == current_serial) |
681 |
continue; |
682 |
|
683 |
target_p->serial = current_serial; |
684 |
send_message(target_p, buffer, len); |
685 |
} |
686 |
} |
687 |
|
688 |
if (touser && MyConnect(user) && !IsDead(user) && |
689 |
user->serial != current_serial) |
690 |
send_message(user, buffer, len); |
691 |
} |
692 |
|
693 |
/* sendto_channel_local() |
694 |
* |
695 |
* inputs - member status mask, e.g. CHFL_CHANOP | CHFL_VOICE |
696 |
* - whether to ignore +D clients (YES/NO) |
697 |
* - pointer to channel to send to |
698 |
* - var args pattern |
699 |
* output - NONE |
700 |
* side effects - Send a message to all members of a channel that are |
701 |
* locally connected to this server. |
702 |
*/ |
703 |
void |
704 |
sendto_channel_local(int type, int nodeaf, struct Channel *chptr, |
705 |
const char *pattern, ...) |
706 |
{ |
707 |
va_list args; |
708 |
char buffer[IRCD_BUFSIZE]; |
709 |
int len; |
710 |
dlink_node *ptr; |
711 |
struct Membership *ms; |
712 |
struct Client *target_p; |
713 |
|
714 |
va_start(args, pattern); |
715 |
len = send_format(buffer, IRCD_BUFSIZE, pattern, args); |
716 |
va_end(args); |
717 |
|
718 |
DLINK_FOREACH(ptr, chptr->members.head) |
719 |
{ |
720 |
ms = ptr->data; |
721 |
target_p = ms->client_p; |
722 |
|
723 |
if (type != 0 && (ms->flags & type) == 0) |
724 |
continue; |
725 |
|
726 |
if (!MyConnect(target_p) || IsDefunct(target_p) || |
727 |
(nodeaf && IsDeaf(target_p))) |
728 |
continue; |
729 |
|
730 |
send_message(target_p, buffer, len); |
731 |
} |
732 |
} |
733 |
|
734 |
/* sendto_channel_local_butone() |
735 |
* |
736 |
* inputs - pointer to client to NOT send message to |
737 |
* - member status mask, e.g. CHFL_CHANOP | CHFL_VOICE |
738 |
* - pointer to channel to send to |
739 |
* - var args pattern |
740 |
* output - NONE |
741 |
* side effects - Send a message to all members of a channel that are |
742 |
* locally connected to this server except one. |
743 |
* |
744 |
* WARNING - +D clients are omitted |
745 |
*/ |
746 |
void |
747 |
sendto_channel_local_butone(struct Client *one, int type, |
748 |
struct Channel *chptr, const char *pattern, ...) |
749 |
{ |
750 |
va_list args; |
751 |
char buffer[IRCD_BUFSIZE]; |
752 |
int len; |
753 |
struct Client *target_p; |
754 |
struct Membership *ms; |
755 |
dlink_node *ptr; |
756 |
|
757 |
va_start(args, pattern); |
758 |
len = send_format(buffer, IRCD_BUFSIZE, pattern, args); |
759 |
va_end(args); |
760 |
|
761 |
DLINK_FOREACH(ptr, chptr->members.head) |
762 |
{ |
763 |
ms = ptr->data; |
764 |
target_p = ms->client_p; |
765 |
|
766 |
if (type != 0 && (ms->flags & type) == 0) |
767 |
continue; |
768 |
|
769 |
if (!MyConnect(target_p) || target_p == one || |
770 |
IsDefunct(target_p) || IsDeaf(target_p)) |
771 |
continue; |
772 |
send_message(target_p, buffer, len); |
773 |
} |
774 |
} |
775 |
|
776 |
|
777 |
/* sendto_channel_remote() |
778 |
* |
779 |
* inputs - Client not to send towards |
780 |
* - Client from whom message is from |
781 |
* - member status mask, e.g. CHFL_CHANOP | CHFL_VOICE |
782 |
* - pointer to channel to send to |
783 |
* - var args pattern |
784 |
* output - NONE |
785 |
* side effects - Send a message to all members of a channel that are |
786 |
* remote to this server. |
787 |
*/ |
788 |
void |
789 |
sendto_channel_remote(struct Client *one, struct Client *from, int type, int caps, |
790 |
int nocaps, struct Channel *chptr, const char *pattern, ...) |
791 |
{ |
792 |
va_list args; |
793 |
char buffer[IRCD_BUFSIZE]; |
794 |
int len; |
795 |
dlink_node *ptr; |
796 |
struct Client *target_p; |
797 |
struct Membership *ms; |
798 |
|
799 |
va_start(args, pattern); |
800 |
len = send_format(buffer, IRCD_BUFSIZE, pattern, args); |
801 |
va_end(args); |
802 |
|
803 |
++current_serial; |
804 |
|
805 |
DLINK_FOREACH(ptr, chptr->members.head) |
806 |
{ |
807 |
ms = ptr->data; |
808 |
target_p = ms->client_p; |
809 |
|
810 |
if (type != 0 && (ms->flags & type) == 0) |
811 |
continue; |
812 |
|
813 |
if (MyConnect(target_p)) |
814 |
continue; |
815 |
target_p = target_p->from; |
816 |
|
817 |
if (target_p == one->from || |
818 |
((target_p->from->localClient->caps & caps) != caps) || |
819 |
((target_p->from->localClient->caps & nocaps) != 0)) |
820 |
continue; |
821 |
if (target_p->from->serial != current_serial) |
822 |
{ |
823 |
send_message(target_p, buffer, len); |
824 |
target_p->from->serial = current_serial; |
825 |
} |
826 |
} |
827 |
} |
828 |
|
829 |
/* |
830 |
** match_it() and sendto_match_butone() ARE only used |
831 |
** to send a msg to all ppl on servers/hosts that match a specified mask |
832 |
** (used for enhanced PRIVMSGs) for opers |
833 |
** |
834 |
** addition -- Armin, 8jun90 (gruner@informatik.tu-muenchen.de) |
835 |
** |
836 |
*/ |
837 |
|
838 |
/* match_it() |
839 |
* |
840 |
* inputs - client pointer to match on |
841 |
* - actual mask to match |
842 |
* - what to match on, HOST or SERVER |
843 |
* output - 1 or 0 if match or not |
844 |
* side effects - NONE |
845 |
*/ |
846 |
static int |
847 |
match_it(const struct Client *one, const char *mask, int what) |
848 |
{ |
849 |
if (what == MATCH_HOST) |
850 |
return(match(mask, one->host)); |
851 |
|
852 |
return(match(mask, one->servptr->name)); |
853 |
} |
854 |
|
855 |
/* sendto_match_butone() |
856 |
* |
857 |
* Send to all clients which match the mask in a way defined on 'what'; |
858 |
* either by user hostname or user servername. |
859 |
* |
860 |
* ugh. ONLY used by m_message.c to send an "oper magic" message. ugh. |
861 |
*/ |
862 |
void |
863 |
sendto_match_butone(struct Client *one, struct Client *from, char *mask, |
864 |
int what, const char *pattern, ...) |
865 |
{ |
866 |
va_list alocal, aremote; |
867 |
struct Client *client_p; |
868 |
dlink_node *ptr, *ptr_next; |
869 |
char local_buf[IRCD_BUFSIZE], remote_buf[IRCD_BUFSIZE]; |
870 |
int local_len = ircsprintf(local_buf, ":%s!%s@%s ", from->name, |
871 |
from->username, from->host); |
872 |
int remote_len = ircsprintf(remote_buf, ":%s ", from->name); |
873 |
|
874 |
va_start(alocal, pattern); |
875 |
va_start(aremote, pattern); |
876 |
local_len += send_format(&local_buf[local_len], IRCD_BUFSIZE - local_len, |
877 |
pattern, alocal); |
878 |
remote_len += send_format(&remote_buf[remote_len], IRCD_BUFSIZE - remote_len, |
879 |
pattern, aremote); |
880 |
va_end(aremote); |
881 |
va_end(alocal); |
882 |
|
883 |
/* scan the local clients */ |
884 |
DLINK_FOREACH(ptr, local_client_list.head) |
885 |
{ |
886 |
client_p = ptr->data; |
887 |
|
888 |
if (client_p != one && !IsDefunct(client_p) && |
889 |
match_it(client_p, mask, what)) |
890 |
send_message(client_p, local_buf, local_len); |
891 |
} |
892 |
|
893 |
/* Now scan servers */ |
894 |
DLINK_FOREACH_SAFE(ptr, ptr_next, serv_list.head) |
895 |
{ |
896 |
client_p = ptr->data; |
897 |
|
898 |
/* |
899 |
* The old code looped through every client on the |
900 |
* network for each server to check if the |
901 |
* server (client_p) has at least 1 client matching |
902 |
* the mask, using something like: |
903 |
* |
904 |
* for (target_p = GlobalClientList; target_p; target_p = target_p->next) |
905 |
* if (IsRegisteredUser(target_p) && |
906 |
* match_it(target_p, mask, what) && |
907 |
* (target_p->from == client_p)) |
908 |
* vsendto_prefix_one(client_p, from, pattern, args); |
909 |
* |
910 |
* That way, we wouldn't send the message to |
911 |
* a server who didn't have a matching client. |
912 |
* However, on a network such as EFNet, that |
913 |
* code would have looped through about 50 |
914 |
* servers, and in each loop, loop through |
915 |
* about 50k clients as well, calling match() |
916 |
* in each nested loop. That is a very bad |
917 |
* thing cpu wise - just send the message |
918 |
* to every connected server and let that |
919 |
* server deal with it. |
920 |
* -wnder |
921 |
*/ |
922 |
if (client_p != one && !IsDefunct(client_p)) |
923 |
send_message_remote(client_p, from, remote_buf, remote_len); |
924 |
} |
925 |
} |
926 |
|
927 |
/* sendto_match_servs() |
928 |
* |
929 |
* inputs - source client |
930 |
* - mask to send to |
931 |
* - capab needed |
932 |
* - data |
933 |
* outputs - none |
934 |
* side effects - data sent to servers matching with capab |
935 |
*/ |
936 |
void |
937 |
sendto_match_servs(struct Client *source_p, const char *mask, int cap, |
938 |
const char *pattern, ...) |
939 |
{ |
940 |
va_list args; |
941 |
struct Client *target_p; |
942 |
dlink_node *ptr; |
943 |
char buffer[IRCD_BUFSIZE]; |
944 |
int found = 0; |
945 |
|
946 |
va_start(args, pattern); |
947 |
vsnprintf(buffer, sizeof(buffer), pattern, args); |
948 |
va_end(args); |
949 |
|
950 |
current_serial++; |
951 |
|
952 |
DLINK_FOREACH(ptr, global_serv_list.head) |
953 |
{ |
954 |
target_p = ptr->data; |
955 |
|
956 |
/* Do not attempt to send to ourselves, or the source */ |
957 |
if (IsMe(target_p) || target_p->from == source_p->from) |
958 |
continue; |
959 |
|
960 |
if (target_p->from->serial == current_serial) |
961 |
continue; |
962 |
|
963 |
if (match(mask, target_p->name)) |
964 |
{ |
965 |
/* |
966 |
* if we set the serial here, then we'll never do a |
967 |
* match() again, if !IsCapable() |
968 |
*/ |
969 |
target_p->from->serial = current_serial; |
970 |
found++; |
971 |
|
972 |
if (!IsCapable(target_p->from, cap)) |
973 |
continue; |
974 |
|
975 |
sendto_anywhere(target_p, source_p, "%s", buffer); |
976 |
} |
977 |
} |
978 |
} |
979 |
|
980 |
/* sendto_anywhere() |
981 |
* |
982 |
* inputs - pointer to dest client |
983 |
* - pointer to from client |
984 |
* - varags |
985 |
* output - NONE |
986 |
* side effects - less efficient than sendto_remote and sendto_one |
987 |
* but useful when one does not know where target "lives" |
988 |
*/ |
989 |
void |
990 |
sendto_anywhere(struct Client *to, struct Client *from, |
991 |
const char *pattern, ...) |
992 |
{ |
993 |
va_list args; |
994 |
char buffer[IRCD_BUFSIZE]; |
995 |
int len; |
996 |
struct Client *send_to = (to->from != NULL ? to->from : to); |
997 |
|
998 |
if (IsDead(send_to)) |
999 |
return; |
1000 |
|
1001 |
if (MyClient(to)) |
1002 |
{ |
1003 |
if (IsServer(from)) |
1004 |
{ |
1005 |
if (IsCapable(to, CAP_TS6) && HasID(from)) |
1006 |
len = ircsprintf(buffer, ":%s ", from->id); |
1007 |
else |
1008 |
len = ircsprintf(buffer, ":%s ", from->name); |
1009 |
} |
1010 |
else |
1011 |
len = ircsprintf(buffer, ":%s!%s@%s ", |
1012 |
from->name, from->username, from->host); |
1013 |
} |
1014 |
else len = ircsprintf(buffer, ":%s ", ID_or_name(from, send_to)); |
1015 |
|
1016 |
va_start(args, pattern); |
1017 |
len += send_format(&buffer[len], IRCD_BUFSIZE - len, pattern, args); |
1018 |
va_end(args); |
1019 |
|
1020 |
if(MyClient(to)) |
1021 |
send_message(send_to, buffer, len); |
1022 |
else |
1023 |
send_message_remote(send_to, from, buffer, len); |
1024 |
} |
1025 |
|
1026 |
/* sendto_realops_flags() |
1027 |
* |
1028 |
* inputs - flag types of messages to show to real opers |
1029 |
* - flag indicating opers/admins |
1030 |
* - var args input message |
1031 |
* output - NONE |
1032 |
* side effects - Send to *local* ops only but NOT +s nonopers. |
1033 |
*/ |
1034 |
void |
1035 |
sendto_realops_flags(unsigned int flags, int level, const char *pattern, ...) |
1036 |
{ |
1037 |
struct Client *client_p; |
1038 |
char nbuf[IRCD_BUFSIZE]; |
1039 |
dlink_node *ptr; |
1040 |
va_list args; |
1041 |
|
1042 |
va_start(args, pattern); |
1043 |
vsnprintf(nbuf, IRCD_BUFSIZE, pattern, args); |
1044 |
va_end(args); |
1045 |
|
1046 |
DLINK_FOREACH(ptr, oper_list.head) |
1047 |
{ |
1048 |
client_p = ptr->data; |
1049 |
assert(client_p->umodes & UMODE_OPER); |
1050 |
|
1051 |
/* If we're sending it to opers and theyre an admin, skip. |
1052 |
* If we're sending it to admins, and theyre not, skip. |
1053 |
*/ |
1054 |
if (((level == L_ADMIN) && !IsAdmin(client_p)) || |
1055 |
((level == L_OPER) && IsAdmin(client_p))) |
1056 |
continue; |
1057 |
|
1058 |
if (client_p->umodes & flags) |
1059 |
sendto_one(client_p, ":%s NOTICE %s :*** Notice -- %s", |
1060 |
me.name, client_p->name, nbuf); |
1061 |
} |
1062 |
} |
1063 |
|
1064 |
/* sendto_wallops_flags() |
1065 |
* |
1066 |
* inputs - flag types of messages to show to real opers |
1067 |
* - client sending request |
1068 |
* - var args input message |
1069 |
* output - NONE |
1070 |
* side effects - Send a wallops to local opers |
1071 |
*/ |
1072 |
void |
1073 |
sendto_wallops_flags(unsigned int flags, struct Client *source_p, |
1074 |
const char *pattern, ...) |
1075 |
{ |
1076 |
struct Client *client_p; |
1077 |
dlink_node *ptr; |
1078 |
va_list args; |
1079 |
char buffer[IRCD_BUFSIZE]; |
1080 |
int len; |
1081 |
|
1082 |
if (IsClient(source_p)) |
1083 |
len = ircsprintf(buffer, ":%s!%s@%s WALLOPS :", |
1084 |
source_p->name, source_p->username, source_p->host); |
1085 |
else |
1086 |
len = ircsprintf(buffer, ":%s WALLOPS :", source_p->name); |
1087 |
|
1088 |
va_start(args, pattern); |
1089 |
len += send_format(&buffer[len], IRCD_BUFSIZE - len, pattern, args); |
1090 |
va_end(args); |
1091 |
|
1092 |
DLINK_FOREACH(ptr, oper_list.head) |
1093 |
{ |
1094 |
client_p = ptr->data; |
1095 |
assert(client_p->umodes & UMODE_OPER); |
1096 |
|
1097 |
if ((client_p->umodes & flags) && !IsDefunct(client_p)) |
1098 |
send_message(client_p, buffer, len); |
1099 |
} |
1100 |
} |
1101 |
|
1102 |
/* ts_warn() |
1103 |
* |
1104 |
* inputs - var args message |
1105 |
* output - NONE |
1106 |
* side effects - Call sendto_realops_flags, with some flood checking |
1107 |
* (at most 5 warnings every 5 seconds) |
1108 |
*/ |
1109 |
void |
1110 |
ts_warn(const char *pattern, ...) |
1111 |
{ |
1112 |
va_list args; |
1113 |
char buffer[LOG_BUFSIZE]; |
1114 |
static time_t last = 0; |
1115 |
static int warnings = 0; |
1116 |
|
1117 |
/* |
1118 |
** if we're running with TS_WARNINGS enabled and someone does |
1119 |
** something silly like (remotely) connecting a nonTS server, |
1120 |
** we'll get a ton of warnings, so we make sure we don't send |
1121 |
** more than 5 every 5 seconds. -orabidoo |
1122 |
*/ |
1123 |
|
1124 |
if (CurrentTime - last < 5) |
1125 |
{ |
1126 |
if (++warnings > 5) |
1127 |
return; |
1128 |
} |
1129 |
else |
1130 |
{ |
1131 |
last = CurrentTime; |
1132 |
warnings = 0; |
1133 |
} |
1134 |
|
1135 |
va_start(args, pattern); |
1136 |
vsprintf_irc(buffer, pattern, args); |
1137 |
va_end(args); |
1138 |
|
1139 |
sendto_realops_flags(UMODE_ALL, L_ALL, "%s", buffer); |
1140 |
ilog(L_CRIT, "%s", buffer); |
1141 |
} |
1142 |
|
1143 |
/* kill_client() |
1144 |
* |
1145 |
* inputs - client to send kill towards |
1146 |
* - pointer to client to kill |
1147 |
* - reason for kill |
1148 |
* output - NONE |
1149 |
* side effects - NONE |
1150 |
*/ |
1151 |
void |
1152 |
kill_client(struct Client *client_p, struct Client *diedie, |
1153 |
const char *pattern, ...) |
1154 |
{ |
1155 |
va_list args; |
1156 |
char buffer[IRCD_BUFSIZE]; |
1157 |
int len; |
1158 |
|
1159 |
if (client_p->from != NULL) |
1160 |
client_p = client_p->from; |
1161 |
if (IsDead(client_p)) |
1162 |
return; |
1163 |
|
1164 |
len = ircsprintf(buffer, ":%s KILL %s :", ID_or_name(&me, client_p->from), |
1165 |
ID_or_name(diedie, client_p)); |
1166 |
|
1167 |
va_start(args, pattern); |
1168 |
len += send_format(&buffer[len], IRCD_BUFSIZE - len, pattern, args); |
1169 |
va_end(args); |
1170 |
|
1171 |
send_message(client_p, buffer, len); |
1172 |
} |
1173 |
|
1174 |
/* kill_client_ll_serv_butone() |
1175 |
* |
1176 |
* inputs - pointer to client to not send to |
1177 |
* - pointer to client to kill |
1178 |
* output - NONE |
1179 |
* side effects - Send a KILL for the given client |
1180 |
* message to all connected servers |
1181 |
* except the client 'one'. Also deal with |
1182 |
* client being unknown to leaf, as in lazylink... |
1183 |
*/ |
1184 |
void |
1185 |
kill_client_ll_serv_butone(struct Client *one, struct Client *source_p, |
1186 |
const char *pattern, ...) |
1187 |
{ |
1188 |
va_list args; |
1189 |
int have_uid = 0; |
1190 |
struct Client *client_p; |
1191 |
dlink_node *ptr; |
1192 |
char buf_uid[IRCD_BUFSIZE], buf_nick[IRCD_BUFSIZE]; |
1193 |
int len_uid = 0, len_nick; |
1194 |
|
1195 |
if (HasID(source_p) && (me.id[0] != '\0')) |
1196 |
{ |
1197 |
have_uid = 1; |
1198 |
va_start(args, pattern); |
1199 |
len_uid = ircsprintf(buf_uid, ":%s KILL %s :", me.id, ID(source_p)); |
1200 |
len_uid += send_format(&buf_uid[len_uid], IRCD_BUFSIZE - len_uid, pattern, |
1201 |
args); |
1202 |
va_end(args); |
1203 |
} |
1204 |
|
1205 |
va_start(args, pattern); |
1206 |
len_nick = ircsprintf(buf_nick, ":%s KILL %s :", me.name, source_p->name); |
1207 |
len_nick += send_format(&buf_nick[len_nick], IRCD_BUFSIZE - len_nick, pattern, |
1208 |
args); |
1209 |
va_end(args); |
1210 |
|
1211 |
DLINK_FOREACH(ptr, serv_list.head) |
1212 |
{ |
1213 |
client_p = ptr->data; |
1214 |
|
1215 |
if (one != NULL && (client_p == one->from)) |
1216 |
continue; |
1217 |
if (IsDefunct(client_p)) |
1218 |
continue; |
1219 |
|
1220 |
/* XXX perhaps IsCapable should test for localClient itself ? -db */ |
1221 |
if (client_p->localClient == NULL || !IsCapable(client_p, CAP_LL) || |
1222 |
!ServerInfo.hub || |
1223 |
(source_p->lazyLinkClientExists & client_p->localClient->serverMask)) |
1224 |
{ |
1225 |
if (have_uid && IsCapable(client_p, CAP_TS6)) |
1226 |
send_message(client_p, buf_uid, len_uid); |
1227 |
else |
1228 |
send_message(client_p, buf_nick, len_nick); |
1229 |
} |
1230 |
} |
1231 |
} |