1 |
/* |
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* ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd). |
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* m_message.c: Sends a (PRIVMSG|NOTICE) message to a user or channel. |
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* |
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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 "list.h" |
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#include "handlers.h" |
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#include "client.h" |
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#include "ircd.h" |
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#include "numeric.h" |
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#include "common.h" |
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#include "s_conf.h" |
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#include "s_serv.h" |
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#include "send.h" |
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#include "msg.h" |
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#include "parse.h" |
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#include "modules.h" |
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#include "channel.h" |
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#include "channel_mode.h" |
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#include "irc_string.h" |
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#include "hash.h" |
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#include "packet.h" |
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|
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struct entity |
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{ |
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void *ptr; |
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int type; |
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int flags; |
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}; |
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|
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static int build_target_list(int p_or_n, const char *command, |
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struct Client *client_p, |
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struct Client *source_p, |
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char *nicks_channels, char *text); |
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|
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static int flood_attack_client(int p_or_n, struct Client *source_p, |
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struct Client *target_p); |
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static int flood_attack_channel(int p_or_n, struct Client *source_p, |
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struct Channel *chptr, char *chname); |
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static struct Client* find_userhost (char *, char *, int *); |
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|
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#define ENTITY_NONE 0 |
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#define ENTITY_CHANNEL 1 |
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#define ENTITY_CHANOPS_ON_CHANNEL 2 |
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#define ENTITY_CLIENT 3 |
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|
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static struct entity targets[512]; |
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static int ntargets = 0; |
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|
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static int duplicate_ptr(void *); |
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|
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static void m_message(int, const char *, struct Client *, |
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struct Client *, int, char **); |
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|
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static void m_privmsg(struct Client *, struct Client *, int, char **); |
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static void m_notice(struct Client *, struct Client *, int, char **); |
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|
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static void msg_channel(int p_or_n, const char *command, |
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struct Client *client_p, |
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struct Client *source_p, |
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struct Channel *chptr, char *text); |
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|
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static void msg_channel_flags(int p_or_n, const char *command, |
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struct Client *client_p, |
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struct Client *source_p, |
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struct Channel *chptr, int flags, char *text); |
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|
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static void msg_client(int p_or_n, const char *command, |
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struct Client *source_p, struct Client *target_p, |
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char *text); |
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|
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static void handle_special(int p_or_n, const char *command, |
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struct Client *client_p, |
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struct Client *source_p, char *nick, char *text); |
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|
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struct Message privmsg_msgtab = { |
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"PRIVMSG", 0, 0, 1, 0, MFLG_SLOW | MFLG_UNREG, 0L, |
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{m_unregistered, m_privmsg, m_privmsg, m_ignore, m_privmsg, m_ignore} |
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}; |
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|
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struct Message notice_msgtab = { |
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"NOTICE", 0, 0, 1, 0, MFLG_SLOW, 0L, |
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{m_unregistered, m_notice, m_notice, m_ignore, m_notice, m_ignore} |
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}; |
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|
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void |
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_modinit(void) |
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{ |
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mod_add_cmd(&privmsg_msgtab); |
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mod_add_cmd(¬ice_msgtab); |
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} |
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|
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void |
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_moddeinit(void) |
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{ |
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mod_del_cmd(&privmsg_msgtab); |
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mod_del_cmd(¬ice_msgtab); |
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} |
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|
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const char *_version = "$Revision$"; |
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|
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/* |
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** m_privmsg |
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** |
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** massive cleanup |
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** rev argv 6/91 |
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** |
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** Another massive cleanup Nov, 2000 |
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** (I don't think there is a single line left from 6/91. Maybe.) |
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** m_privmsg and m_notice do basically the same thing. |
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** in the original 2.8.2 code base, they were the same function |
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** "m_message.c." When we did the great cleanup in conjuncton with bleep |
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** of ircu fame, we split m_privmsg.c and m_notice.c. |
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** I don't see the point of that now. Its harder to maintain, its |
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** easier to introduce bugs into one version and not the other etc. |
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** Really, the penalty of an extra function call isn't that big a deal folks. |
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** -db Nov 13, 2000 |
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** |
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*/ |
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|
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#define PRIVMSG 0 |
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#define NOTICE 1 |
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|
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static void |
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m_privmsg(struct Client *client_p, struct Client *source_p, |
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int parc, char *parv[]) |
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{ |
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/* servers have no reason to send privmsgs, yet sometimes there is cause |
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* for a notice.. (for example remote kline replies) --fl_ |
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*/ |
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if (!IsClient(source_p)) |
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return; |
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|
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m_message(PRIVMSG, "PRIVMSG", client_p, source_p, parc, parv); |
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} |
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|
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static void |
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m_notice(struct Client *client_p, struct Client *source_p, |
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int parc, char *parv[]) |
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{ |
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m_message(NOTICE, "NOTICE", client_p, source_p, parc, parv); |
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} |
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|
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/* |
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* inputs - flag privmsg or notice |
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* - pointer to command "PRIVMSG" or "NOTICE" |
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* - pointer to client_p |
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* - pointer to source_p |
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* - pointer to channel |
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*/ |
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static void |
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m_message(int p_or_n, const char *command, struct Client *client_p, |
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struct Client *source_p, int parc, char *parv[]) |
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{ |
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int i; |
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|
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if (parc < 2 || EmptyString(parv[1])) |
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{ |
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if (p_or_n != NOTICE) |
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sendto_one(source_p, form_str(ERR_NORECIPIENT), |
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ID_or_name(&me, client_p), |
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ID_or_name(source_p, client_p), command); |
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return; |
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} |
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|
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if (parc < 3 || EmptyString(parv[2])) |
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{ |
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if (p_or_n != NOTICE) |
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sendto_one(source_p, form_str(ERR_NOTEXTTOSEND), |
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ID_or_name(&me, client_p), |
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ID_or_name(source_p, client_p)); |
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return; |
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} |
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|
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/* Finish the flood grace period... */ |
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if (MyClient(source_p) && !IsFloodDone(source_p)) |
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flood_endgrace(source_p); |
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|
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if (build_target_list(p_or_n, command, client_p, source_p, parv[1], |
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parv[2]) < 0) |
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return; |
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|
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for (i = 0; i < ntargets; i++) |
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{ |
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switch (targets[i].type) |
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{ |
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case ENTITY_CHANNEL: |
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msg_channel(p_or_n, command, client_p, source_p, |
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(struct Channel *)targets[i].ptr, parv[2]); |
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break; |
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|
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case ENTITY_CHANOPS_ON_CHANNEL: |
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msg_channel_flags(p_or_n, command, client_p, source_p, |
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(struct Channel *)targets[i].ptr, |
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targets[i].flags, parv[2]); |
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break; |
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|
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case ENTITY_CLIENT: |
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msg_client(p_or_n, command, source_p, |
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(struct Client *)targets[i].ptr, parv[2]); |
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break; |
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} |
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} |
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} |
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|
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/* build_target_list() |
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* |
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* inputs - pointer to given client_p (server) |
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* - pointer to given source (oper/client etc.) |
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* - pointer to list of nicks/channels |
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* - pointer to table to place results |
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* - pointer to text (only used if source_p is an oper) |
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* output - number of valid entities |
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* side effects - target_table is modified to contain a list of |
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* pointers to channels or clients |
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* if source client is an oper |
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* all the classic old bizzare oper privmsg tricks |
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* are parsed and sent as is, if prefixed with $ |
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* to disambiguate. |
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* |
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*/ |
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static int |
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build_target_list(int p_or_n, const char *command, struct Client *client_p, |
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struct Client *source_p, char *nicks_channels, char *text) |
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{ |
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int type; |
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char *p = NULL, *nick, *target_list; |
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struct Channel *chptr = NULL; |
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struct Client *target_p = NULL; |
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|
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target_list = nicks_channels; |
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|
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ntargets = 0; |
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|
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for (nick = strtoken(&p, target_list, ","); nick; |
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nick = strtoken(&p, NULL, ",")) |
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{ |
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char *with_prefix; |
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/* |
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* channels are privmsg'd a lot more than other clients, moved up |
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* here plain old channel msg? |
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*/ |
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|
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if (IsChanPrefix(*nick)) |
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{ |
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/* ignore send of local channel to a server (should not happen) */ |
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if (*nick == '&' && IsServer(client_p)) |
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continue; |
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|
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if ((chptr = hash_find_channel(nick)) != NULL) |
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{ |
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if (!duplicate_ptr(chptr)) |
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{ |
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if (ntargets >= ConfigFileEntry.max_targets) |
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{ |
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sendto_one(source_p, form_str(ERR_TOOMANYTARGETS), |
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ID_or_name(&me, client_p), |
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ID_or_name(source_p, client_p), nick, |
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ConfigFileEntry.max_targets); |
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return (1); |
281 |
} |
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targets[ntargets].ptr = (void *)chptr; |
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targets[ntargets++].type = ENTITY_CHANNEL; |
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} |
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} |
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else |
287 |
{ |
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if (p_or_n != NOTICE) |
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sendto_one(source_p, form_str(ERR_NOSUCHNICK), |
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ID_or_name(&me, client_p), |
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ID_or_name(source_p, client_p), nick); |
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} |
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continue; |
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} |
295 |
|
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/* look for a privmsg to another client */ |
297 |
if ((target_p = find_person(client_p, nick)) != NULL) |
298 |
{ |
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if (!duplicate_ptr(target_p)) |
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{ |
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if (ntargets >= ConfigFileEntry.max_targets) |
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{ |
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sendto_one(source_p, form_str(ERR_TOOMANYTARGETS), |
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ID_or_name(&me, client_p), |
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ID_or_name(source_p, client_p), nick, |
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ConfigFileEntry.max_targets); |
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return (1); |
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} |
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targets[ntargets].ptr = (void *)target_p; |
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targets[ntargets].type = ENTITY_CLIENT; |
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targets[ntargets++].flags = 0; |
312 |
} |
313 |
continue; |
314 |
} |
315 |
|
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/* @#channel or +#channel message ? */ |
317 |
|
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type = 0; |
319 |
with_prefix = nick; |
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/* allow %+@ if someone wants to do that */ |
321 |
for (; ;) |
322 |
{ |
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if (*nick == '@') |
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type |= CHFL_CHANOP; |
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#ifdef HALFOPS |
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else if (*nick == '%') |
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type |= CHFL_CHANOP | CHFL_HALFOP; |
328 |
#endif |
329 |
else if (*nick == '+') |
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type |= CHFL_CHANOP | CHFL_HALFOP | CHFL_VOICE; |
331 |
else |
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break; |
333 |
nick++; |
334 |
} |
335 |
|
336 |
if (type != 0) |
337 |
{ |
338 |
/* suggested by Mortiis */ |
339 |
if (*nick == '\0') /* if its a '\0' dump it, there is no recipient */ |
340 |
{ |
341 |
sendto_one(source_p, form_str(ERR_NORECIPIENT), |
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ID_or_name(&me, client_p), |
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ID_or_name(source_p, client_p), command); |
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continue; |
345 |
} |
346 |
|
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/* At this point, nick+1 should be a channel name i.e. #foo or &foo |
348 |
* if the channel is found, fine, if not report an error |
349 |
*/ |
350 |
|
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if ((chptr = hash_find_channel(nick)) != NULL) |
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{ |
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if (!has_member_flags(find_channel_link(source_p, chptr), |
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CHFL_CHANOP|CHFL_HALFOP|CHFL_VOICE)) |
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{ |
356 |
sendto_one(source_p, form_str(ERR_CHANOPRIVSNEEDED), |
357 |
ID_or_name(&me, client_p), |
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ID_or_name(source_p, client_p), with_prefix); |
359 |
return(-1); |
360 |
} |
361 |
|
362 |
if (!duplicate_ptr(chptr)) |
363 |
{ |
364 |
if (ntargets >= ConfigFileEntry.max_targets) |
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{ |
366 |
sendto_one(source_p, form_str(ERR_TOOMANYTARGETS), |
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ID_or_name(&me, client_p), |
368 |
ID_or_name(source_p, client_p), nick, |
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ConfigFileEntry.max_targets); |
370 |
return(1); |
371 |
} |
372 |
targets[ntargets].ptr = (void *)chptr; |
373 |
targets[ntargets].type = ENTITY_CHANOPS_ON_CHANNEL; |
374 |
targets[ntargets++].flags = type; |
375 |
} |
376 |
} |
377 |
else |
378 |
{ |
379 |
if (p_or_n != NOTICE) |
380 |
sendto_one(source_p, form_str(ERR_NOSUCHNICK), |
381 |
ID_or_name(&me, client_p), |
382 |
ID_or_name(source_p, client_p), nick); |
383 |
} |
384 |
continue; |
385 |
} |
386 |
|
387 |
if ((*nick == '$') || strchr(nick, '@') != NULL) |
388 |
{ |
389 |
handle_special(p_or_n, command, client_p, source_p, nick, text); |
390 |
} |
391 |
else |
392 |
{ |
393 |
if (p_or_n != NOTICE) |
394 |
{ |
395 |
if (!IsDigit(*nick) || MyClient(source_p)) |
396 |
sendto_one(source_p, form_str(ERR_NOSUCHNICK), |
397 |
ID_or_name(&me, client_p), |
398 |
ID_or_name(source_p, client_p), nick); |
399 |
} |
400 |
} |
401 |
/* continue; */ |
402 |
} |
403 |
|
404 |
return(1); |
405 |
} |
406 |
|
407 |
/* duplicate_ptr() |
408 |
* |
409 |
* inputs - pointer to check |
410 |
* - pointer to table of entities |
411 |
* - number of valid entities so far |
412 |
* output - YES if duplicate pointer in table, NO if not. |
413 |
* note, this does the canonize using pointers |
414 |
* side effects - NONE |
415 |
*/ |
416 |
static int |
417 |
duplicate_ptr(void *ptr) |
418 |
{ |
419 |
int i; |
420 |
|
421 |
for (i = 0; i < ntargets; i++) |
422 |
{ |
423 |
if (targets[i].ptr == ptr) |
424 |
return(1); |
425 |
} |
426 |
|
427 |
return(0); |
428 |
} |
429 |
|
430 |
/* msg_channel() |
431 |
* |
432 |
* inputs - flag privmsg or notice |
433 |
* - pointer to command "PRIVMSG" or "NOTICE" |
434 |
* - pointer to client_p |
435 |
* - pointer to source_p |
436 |
* - pointer to channel |
437 |
* output - NONE |
438 |
* side effects - message given channel |
439 |
*/ |
440 |
static void |
441 |
msg_channel(int p_or_n, const char *command, struct Client *client_p, |
442 |
struct Client *source_p, struct Channel *chptr, char *text) |
443 |
{ |
444 |
int result; |
445 |
|
446 |
if (MyClient(source_p)) |
447 |
{ |
448 |
/* idle time shouldnt be reset by notices --fl */ |
449 |
if (p_or_n != NOTICE) |
450 |
source_p->localClient->last = CurrentTime; |
451 |
} |
452 |
|
453 |
/* chanops and voiced can flood their own channel with impunity */ |
454 |
if ((result = can_send(chptr, source_p, NULL)) < 0) |
455 |
{ |
456 |
if (result == CAN_SEND_OPV || |
457 |
!flood_attack_channel(p_or_n, source_p, chptr, chptr->chname)) |
458 |
{ |
459 |
sendto_channel_butone(client_p, source_p, chptr, command, ":%s", text); |
460 |
} |
461 |
} |
462 |
else |
463 |
{ |
464 |
if (p_or_n != NOTICE) |
465 |
sendto_one(source_p, form_str(ERR_CANNOTSENDTOCHAN), |
466 |
ID_or_name(&me, client_p), |
467 |
ID_or_name(source_p, client_p), chptr->chname); |
468 |
} |
469 |
} |
470 |
|
471 |
/* msg_channel_flags() |
472 |
* |
473 |
* inputs - flag 0 if PRIVMSG 1 if NOTICE. RFC |
474 |
* say NOTICE must not auto reply |
475 |
* - pointer to command, "PRIVMSG" or "NOTICE" |
476 |
* - pointer to client_p |
477 |
* - pointer to source_p |
478 |
* - pointer to channel |
479 |
* - flags |
480 |
* - pointer to text to send |
481 |
* output - NONE |
482 |
* side effects - message given channel either chanop or voice |
483 |
*/ |
484 |
static void |
485 |
msg_channel_flags(int p_or_n, const char *command, struct Client *client_p, |
486 |
struct Client *source_p, struct Channel *chptr, |
487 |
int flags, char *text) |
488 |
{ |
489 |
int type; |
490 |
char c; |
491 |
|
492 |
if (flags & CHFL_VOICE) |
493 |
{ |
494 |
type = CHFL_VOICE|CHFL_HALFOP|CHFL_CHANOP; |
495 |
c = '+'; |
496 |
} |
497 |
#ifdef HALFOPS |
498 |
else if (flags & CHFL_HALFOP) |
499 |
{ |
500 |
type = CHFL_HALFOP|CHFL_CHANOP; |
501 |
c = '%'; |
502 |
} |
503 |
#endif |
504 |
else |
505 |
{ |
506 |
type = CHFL_CHANOP; |
507 |
c = '@'; |
508 |
} |
509 |
|
510 |
if (MyClient(source_p)) |
511 |
{ |
512 |
/* idletime shouldnt be reset by notice --fl */ |
513 |
if (p_or_n != NOTICE) |
514 |
source_p->localClient->last = CurrentTime; |
515 |
|
516 |
sendto_channel_local_butone(source_p, type, chptr, ":%s!%s@%s %s %c%s :%s", |
517 |
source_p->name, source_p->username, |
518 |
source_p->host, command, c, chptr->chname, text); |
519 |
} |
520 |
else |
521 |
{ |
522 |
/* |
523 |
* another good catch, lee. we never would echo to remote clients anyway, |
524 |
* so use slightly less intensive sendto_channel_local() |
525 |
*/ |
526 |
sendto_channel_local(type, YES, chptr, ":%s!%s@%s %s %c%s :%s", |
527 |
source_p->name, source_p->username, |
528 |
source_p->host, command, c, chptr->chname, text); |
529 |
} |
530 |
|
531 |
if (chptr->chname[0] != '#') |
532 |
return; |
533 |
|
534 |
sendto_channel_remote(source_p, client_p, type, CAP_CHW, CAP_TS6, chptr, |
535 |
":%s %s %c%s :%s", source_p->name, command, c, chptr->chname, text); |
536 |
sendto_channel_remote(source_p, client_p, type, CAP_CHW|CAP_TS6, NOCAPS, chptr, |
537 |
":%s %s %c%s :%s", ID(source_p), command, c, chptr->chname, text); |
538 |
/* non CAP_CHW servers? */ |
539 |
} |
540 |
|
541 |
/* msg_client() |
542 |
* |
543 |
* inputs - flag 0 if PRIVMSG 1 if NOTICE. RFC |
544 |
* say NOTICE must not auto reply |
545 |
* - pointer to command, "PRIVMSG" or "NOTICE" |
546 |
* - pointer to source_p source (struct Client *) |
547 |
* - pointer to target_p target (struct Client *) |
548 |
* - pointer to text |
549 |
* output - NONE |
550 |
* side effects - message given channel either chanop or voice |
551 |
*/ |
552 |
static void |
553 |
msg_client(int p_or_n, const char *command, struct Client *source_p, |
554 |
struct Client *target_p, char *text) |
555 |
{ |
556 |
if (MyConnect(source_p)) |
557 |
{ |
558 |
/* |
559 |
* reset idle time for message only if its not to self |
560 |
* and its not a notice |
561 |
* NOTE: Normally we really should reset their idletime |
562 |
* if the are messaging themselves, but we have to go |
563 |
* this way in order to prevent them to trick out |
564 |
* idle-klines. |
565 |
*/ |
566 |
if ((p_or_n != NOTICE) && (source_p != target_p)) |
567 |
source_p->localClient->last = CurrentTime; |
568 |
|
569 |
if ((p_or_n != NOTICE) && target_p->away) |
570 |
sendto_one(source_p, form_str(RPL_AWAY), me.name, |
571 |
source_p->name, target_p->name, target_p->away); |
572 |
|
573 |
if (HasUMode(target_p, UMODE_REGONLY) && target_p != source_p) |
574 |
{ |
575 |
if (!HasUMode(source_p, UMODE_REGISTERED|UMODE_OPER)) |
576 |
{ |
577 |
if (p_or_n != NOTICE) |
578 |
sendto_one(source_p, form_str(ERR_NONONREG), me.name, source_p->name, |
579 |
target_p->name); |
580 |
return; |
581 |
} |
582 |
} |
583 |
} |
584 |
|
585 |
if (MyClient(target_p)) |
586 |
{ |
587 |
if (!IsServer(source_p) && IsSetCallerId(target_p)) |
588 |
{ |
589 |
/* Here is the anti-flood bot/spambot code -db */ |
590 |
if (accept_message(source_p, target_p) || IsService(source_p) || |
591 |
(IsOper(source_p) && (ConfigFileEntry.opers_bypass_callerid == 1))) |
592 |
{ |
593 |
sendto_one(target_p, ":%s!%s@%s %s %s :%s", |
594 |
source_p->name, source_p->username, |
595 |
source_p->host, command, target_p->name, text); |
596 |
} |
597 |
else |
598 |
{ |
599 |
/* check for accept, flag recipient incoming message */ |
600 |
if (p_or_n != NOTICE) |
601 |
sendto_one(source_p, form_str(RPL_TARGUMODEG), |
602 |
ID_or_name(&me, source_p->from), |
603 |
ID_or_name(source_p, source_p->from), target_p->name); |
604 |
|
605 |
if ((target_p->localClient->last_caller_id_time + |
606 |
ConfigFileEntry.caller_id_wait) < CurrentTime) |
607 |
{ |
608 |
if (p_or_n != NOTICE) |
609 |
sendto_one(source_p, form_str(RPL_TARGNOTIFY), |
610 |
ID_or_name(&me, source_p->from), |
611 |
ID_or_name(source_p, source_p->from), target_p->name); |
612 |
|
613 |
sendto_one(target_p, form_str(RPL_UMODEGMSG), |
614 |
me.name, target_p->name, |
615 |
get_client_name(source_p, HIDE_IP)); |
616 |
|
617 |
target_p->localClient->last_caller_id_time = CurrentTime; |
618 |
|
619 |
} |
620 |
/* Only so opers can watch for floods */ |
621 |
flood_attack_client(p_or_n, source_p, target_p); |
622 |
} |
623 |
} |
624 |
else |
625 |
{ |
626 |
/* If the client is remote, we dont perform a special check for |
627 |
* flooding.. as we wouldnt block their message anyway.. this means |
628 |
* we dont give warnings.. we then check if theyre opered |
629 |
* (to avoid flood warnings), lastly if theyre our client |
630 |
* and flooding -- fl */ |
631 |
if (!MyClient(source_p) || IsOper(source_p) || |
632 |
(MyClient(source_p) && |
633 |
!flood_attack_client(p_or_n, source_p, target_p))) |
634 |
sendto_anywhere(target_p, source_p, "%s %s :%s", |
635 |
command, target_p->name, text); |
636 |
} |
637 |
} |
638 |
else |
639 |
/* The target is a remote user.. same things apply -- fl */ |
640 |
if (!MyClient(source_p) || IsOper(source_p) || |
641 |
(MyClient(source_p) |
642 |
&& !flood_attack_client(p_or_n, source_p, target_p))) |
643 |
sendto_anywhere(target_p, source_p, "%s %s :%s", command, target_p->name, |
644 |
text); |
645 |
} |
646 |
|
647 |
/* flood_attack_client() |
648 |
* |
649 |
* inputs - flag 0 if PRIVMSG 1 if NOTICE. RFC |
650 |
* say NOTICE must not auto reply |
651 |
* - pointer to source Client |
652 |
* - pointer to target Client |
653 |
* output - 1 if target is under flood attack |
654 |
* side effects - check for flood attack on target target_p |
655 |
*/ |
656 |
static int |
657 |
flood_attack_client(int p_or_n, struct Client *source_p, |
658 |
struct Client *target_p) |
659 |
{ |
660 |
int delta; |
661 |
|
662 |
if (GlobalSetOptions.floodcount && MyConnect(target_p) |
663 |
&& IsClient(source_p) && !IsConfCanFlood(source_p)) |
664 |
{ |
665 |
if ((target_p->localClient->first_received_message_time + 1) |
666 |
< CurrentTime) |
667 |
{ |
668 |
delta = |
669 |
CurrentTime - target_p->localClient->first_received_message_time; |
670 |
target_p->localClient->received_number_of_privmsgs -= delta; |
671 |
target_p->localClient->first_received_message_time = CurrentTime; |
672 |
|
673 |
if (target_p->localClient->received_number_of_privmsgs <= 0) |
674 |
{ |
675 |
target_p->localClient->received_number_of_privmsgs = 0; |
676 |
ClearMsgFloodNoticed(target_p); |
677 |
} |
678 |
} |
679 |
|
680 |
if ((target_p->localClient->received_number_of_privmsgs >= |
681 |
GlobalSetOptions.floodcount) || IsMsgFloodNoticed(target_p)) |
682 |
{ |
683 |
if (!IsMsgFloodNoticed(target_p)) |
684 |
{ |
685 |
sendto_realops_flags(UMODE_BOTS, L_ALL, |
686 |
"Possible Flooder %s on %s target: %s", |
687 |
get_client_name(source_p, HIDE_IP), |
688 |
source_p->servptr->name, target_p->name); |
689 |
SetMsgFloodNoticed(target_p); |
690 |
/* add a bit of penalty */ |
691 |
target_p->localClient->received_number_of_privmsgs += 2; |
692 |
} |
693 |
|
694 |
if (MyClient(source_p) && (p_or_n != NOTICE)) |
695 |
sendto_one(source_p, |
696 |
":%s NOTICE %s :*** Message to %s throttled due to flooding", |
697 |
me.name, source_p->name, target_p->name); |
698 |
return(1); |
699 |
} |
700 |
else |
701 |
target_p->localClient->received_number_of_privmsgs++; |
702 |
} |
703 |
|
704 |
return(0); |
705 |
} |
706 |
|
707 |
/* flood_attack_channel() |
708 |
* |
709 |
* inputs - flag 0 if PRIVMSG 1 if NOTICE. RFC |
710 |
* says NOTICE must not auto reply |
711 |
* - pointer to source Client |
712 |
* - pointer to target channel |
713 |
* output - 1 if target is under flood attack |
714 |
* side effects - check for flood attack on target chptr |
715 |
*/ |
716 |
static int |
717 |
flood_attack_channel(int p_or_n, struct Client *source_p, |
718 |
struct Channel *chptr, char *chname) |
719 |
{ |
720 |
int delta; |
721 |
|
722 |
if (GlobalSetOptions.floodcount && !IsConfCanFlood(source_p)) |
723 |
{ |
724 |
if ((chptr->first_received_message_time + 1) < CurrentTime) |
725 |
{ |
726 |
delta = CurrentTime - chptr->first_received_message_time; |
727 |
chptr->received_number_of_privmsgs -= delta; |
728 |
chptr->first_received_message_time = CurrentTime; |
729 |
if (chptr->received_number_of_privmsgs <= 0) |
730 |
{ |
731 |
chptr->received_number_of_privmsgs = 0; |
732 |
ClearFloodNoticed(chptr); |
733 |
} |
734 |
} |
735 |
|
736 |
if ((chptr->received_number_of_privmsgs >= GlobalSetOptions.floodcount) |
737 |
|| IsSetFloodNoticed(chptr)) |
738 |
{ |
739 |
if (!IsSetFloodNoticed(chptr)) |
740 |
{ |
741 |
sendto_realops_flags(UMODE_BOTS, L_ALL, |
742 |
"Possible Flooder %s on %s target: %s", |
743 |
get_client_name(source_p, HIDE_IP), |
744 |
source_p->servptr->name, chptr->chname); |
745 |
SetFloodNoticed(chptr); |
746 |
|
747 |
/* Add a bit of penalty */ |
748 |
chptr->received_number_of_privmsgs += 2; |
749 |
} |
750 |
if (MyClient(source_p) && (p_or_n != NOTICE)) |
751 |
sendto_one(source_p, |
752 |
":%s NOTICE %s :*** Message to %s throttled due to flooding", |
753 |
me.name, source_p->name, chname); |
754 |
return(1); |
755 |
} |
756 |
else |
757 |
chptr->received_number_of_privmsgs++; |
758 |
} |
759 |
|
760 |
return(0); |
761 |
} |
762 |
|
763 |
/* handle_special() |
764 |
* |
765 |
* inputs - server pointer |
766 |
* - client pointer |
767 |
* - nick stuff to grok for opers |
768 |
* - text to send if grok |
769 |
* output - none |
770 |
* side effects - old style username@server is handled here for non opers |
771 |
* opers are allowed username%hostname@server |
772 |
* all the traditional oper type messages are also parsed here. |
773 |
* i.e. "/msg #some.host." |
774 |
* However, syntax has been changed. |
775 |
* previous syntax "/msg #some.host.mask" |
776 |
* now becomes "/msg $#some.host.mask" |
777 |
* previous syntax of: "/msg $some.server.mask" remains |
778 |
* This disambiguates the syntax. |
779 |
* |
780 |
* XXX N.B. dalnet changed it to nick@server as have other servers. |
781 |
* we will stick with tradition for now. |
782 |
* - Dianora |
783 |
*/ |
784 |
static void |
785 |
handle_special(int p_or_n, const char *command, struct Client *client_p, |
786 |
struct Client *source_p, char *nick, char *text) |
787 |
{ |
788 |
struct Client *target_p; |
789 |
char *host; |
790 |
char *server; |
791 |
char *s; |
792 |
int count; |
793 |
|
794 |
/* |
795 |
* user[%host]@server addressed? |
796 |
*/ |
797 |
if ((server = strchr(nick, '@')) != NULL) |
798 |
{ |
799 |
count = 0; |
800 |
|
801 |
if ((host = strchr(nick, '%')) && !IsOper(source_p)) |
802 |
{ |
803 |
sendto_one(source_p, form_str(ERR_NOPRIVILEGES), |
804 |
ID_or_name(&me, client_p), |
805 |
ID_or_name(source_p, client_p)); |
806 |
return; |
807 |
} |
808 |
|
809 |
if ((target_p = hash_find_server(server + 1)) != NULL) |
810 |
{ |
811 |
if (!IsMe(target_p)) |
812 |
{ |
813 |
/* |
814 |
* Not destined for a user on me :-( |
815 |
*/ |
816 |
sendto_one(target_p, ":%s %s %s :%s", |
817 |
ID_or_name(source_p, target_p->from), |
818 |
command, nick, text); |
819 |
if ((p_or_n != NOTICE) && MyClient(source_p)) |
820 |
source_p->localClient->last = CurrentTime; |
821 |
return; |
822 |
} |
823 |
|
824 |
*server = '\0'; |
825 |
|
826 |
if (host != NULL) |
827 |
*host++ = '\0'; |
828 |
|
829 |
/* Check if someones msg'ing opers@our.server */ |
830 |
if (strcmp(nick, "opers") == 0) |
831 |
{ |
832 |
if (!IsOper(source_p)) |
833 |
sendto_one(source_p, form_str(ERR_NOPRIVILEGES), |
834 |
ID_or_name(&me, client_p), |
835 |
ID_or_name(source_p, client_p)); |
836 |
else |
837 |
sendto_realops_flags(UMODE_ALL, L_ALL, "To opers: From: %s: %s", |
838 |
source_p->name, text); |
839 |
return; |
840 |
} |
841 |
|
842 |
/* |
843 |
* Look for users which match the destination host |
844 |
* (no host == wildcard) and if one and one only is |
845 |
* found connected to me, deliver message! |
846 |
*/ |
847 |
target_p = find_userhost(nick, host, &count); |
848 |
|
849 |
if (target_p != NULL) |
850 |
{ |
851 |
if (server != NULL) |
852 |
*server = '@'; |
853 |
if (host != NULL) |
854 |
*--host = '%'; |
855 |
|
856 |
if (count == 1) |
857 |
{ |
858 |
sendto_one(target_p, ":%s!%s@%s %s %s :%s", |
859 |
source_p->name, source_p->username, source_p->host, |
860 |
command, nick, text); |
861 |
if ((p_or_n != NOTICE) && MyClient(source_p)) |
862 |
source_p->localClient->last = CurrentTime; |
863 |
} |
864 |
else |
865 |
sendto_one(source_p, form_str(ERR_TOOMANYTARGETS), |
866 |
ID_or_name(&me, client_p), |
867 |
ID_or_name(source_p, client_p), nick, |
868 |
ConfigFileEntry.max_targets); |
869 |
} |
870 |
} |
871 |
else if (server && *(server+1) && (target_p == NULL)) |
872 |
sendto_one(source_p, form_str(ERR_NOSUCHSERVER), |
873 |
ID_or_name(&me, client_p), |
874 |
ID_or_name(source_p, client_p), server+1); |
875 |
else if (server && (target_p == NULL)) |
876 |
sendto_one(source_p, form_str(ERR_NOSUCHNICK), |
877 |
ID_or_name(&me, client_p), |
878 |
ID_or_name(source_p, client_p), nick); |
879 |
return; |
880 |
} |
881 |
|
882 |
if (!IsOper(source_p)) |
883 |
{ |
884 |
sendto_one(source_p, form_str(ERR_NOPRIVILEGES), |
885 |
ID_or_name(&me, client_p), |
886 |
ID_or_name(source_p, client_p)); |
887 |
return; |
888 |
} |
889 |
|
890 |
/* |
891 |
* the following two cases allow masks in NOTICEs |
892 |
* (for OPERs only) |
893 |
* |
894 |
* Armin, 8Jun90 (gruner@informatik.tu-muenchen.de) |
895 |
*/ |
896 |
if (*nick == '$') |
897 |
{ |
898 |
if ((*(nick+1) == '$' || *(nick+1) == '#')) |
899 |
nick++; |
900 |
else if(MyOper(source_p)) |
901 |
{ |
902 |
sendto_one(source_p, |
903 |
":%s NOTICE %s :The command %s %s is no longer supported, please use $%s", |
904 |
me.name, source_p->name, command, nick, nick); |
905 |
return; |
906 |
} |
907 |
|
908 |
if ((s = strrchr(nick, '.')) == NULL) |
909 |
{ |
910 |
sendto_one(source_p, form_str(ERR_NOTOPLEVEL), |
911 |
me.name, source_p->name, nick); |
912 |
return; |
913 |
} |
914 |
|
915 |
while (*++s) |
916 |
if (*s == '.' || *s == '*' || *s == '?') |
917 |
break; |
918 |
|
919 |
if (*s == '*' || *s == '?') |
920 |
{ |
921 |
sendto_one(source_p, form_str(ERR_WILDTOPLEVEL), |
922 |
ID_or_name(&me, client_p), |
923 |
ID_or_name(source_p, client_p), nick); |
924 |
return; |
925 |
} |
926 |
|
927 |
sendto_match_butone(IsServer(client_p) ? client_p : NULL, source_p, |
928 |
nick + 1, (*nick == '#') ? MATCH_HOST : MATCH_SERVER, |
929 |
"%s $%s :%s", command, nick, text); |
930 |
|
931 |
if ((p_or_n != NOTICE) && MyClient(source_p)) |
932 |
source_p->localClient->last = CurrentTime; |
933 |
|
934 |
return; |
935 |
} |
936 |
} |
937 |
|
938 |
/* |
939 |
* find_userhost - find a user@host (server or user). |
940 |
* inputs - user name to look for |
941 |
* - host name to look for |
942 |
* - pointer to count of number of matches found |
943 |
* outputs - pointer to client if found |
944 |
* - count is updated |
945 |
* side effects - none |
946 |
* |
947 |
*/ |
948 |
static struct Client * |
949 |
find_userhost(char *user, char *host, int *count) |
950 |
{ |
951 |
struct Client *c2ptr; |
952 |
struct Client *res = NULL; |
953 |
dlink_node *lc2ptr; |
954 |
|
955 |
*count = 0; |
956 |
|
957 |
if (collapse(user) != NULL) |
958 |
{ |
959 |
DLINK_FOREACH(lc2ptr, local_client_list.head) |
960 |
{ |
961 |
c2ptr = lc2ptr->data; |
962 |
|
963 |
if (!IsClient(c2ptr)) /* something other than a client */ |
964 |
continue; |
965 |
|
966 |
if ((!host || match(host, c2ptr->host)) && |
967 |
irccmp(user, c2ptr->username) == 0) |
968 |
{ |
969 |
(*count)++; |
970 |
res = c2ptr; |
971 |
} |
972 |
} |
973 |
} |
974 |
|
975 |
return(res); |
976 |
} |