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adx |
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/* |
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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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knight |
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* $Id$ |
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adx |
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*/ |
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#include "stdinc.h" |
26 |
michael |
1011 |
#include "list.h" |
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adx |
30 |
#include "client.h" |
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#include "ircd.h" |
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#include "numeric.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 "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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41 |
michael |
1243 |
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42 |
adx |
30 |
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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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); |
53 |
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54 |
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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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60 |
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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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static struct entity targets[512]; |
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static int ntargets = 0; |
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68 |
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static int duplicate_ptr(void *); |
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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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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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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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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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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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** 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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#define PRIVMSG 0 |
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#define NOTICE 1 |
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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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m_message(PRIVMSG, "PRIVMSG", client_p, source_p, parc, parv); |
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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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* 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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*/ |
140 |
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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; |
145 |
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146 |
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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; |
153 |
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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; |
162 |
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} |
163 |
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164 |
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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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168 |
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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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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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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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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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195 |
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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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{ |
215 |
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int type; |
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michael |
885 |
char *p = NULL, *nick, *target_list; |
217 |
adx |
30 |
struct Channel *chptr = NULL; |
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struct Client *target_p = NULL; |
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220 |
michael |
885 |
target_list = nicks_channels; |
221 |
adx |
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ntargets = 0; |
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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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/* |
229 |
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* channels are privmsg'd a lot more than other clients, moved up |
230 |
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* here plain old channel msg? |
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*/ |
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233 |
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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) */ |
236 |
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if (*nick == '&' && IsServer(client_p)) |
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continue; |
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if ((chptr = hash_find_channel(nick)) != NULL) |
240 |
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{ |
241 |
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if (!duplicate_ptr(chptr)) |
242 |
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{ |
243 |
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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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} |
251 |
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targets[ntargets].ptr = (void *)chptr; |
252 |
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targets[ntargets++].type = ENTITY_CHANNEL; |
253 |
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} |
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} |
255 |
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else |
256 |
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{ |
257 |
michael |
885 |
if (p_or_n != NOTICE) |
258 |
adx |
30 |
sendto_one(source_p, form_str(ERR_NOSUCHNICK), |
259 |
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ID_or_name(&me, client_p), |
260 |
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ID_or_name(source_p, client_p), nick); |
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} |
262 |
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continue; |
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} |
264 |
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265 |
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/* look for a privmsg to another client */ |
266 |
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if ((target_p = find_person(client_p, nick)) != NULL) |
267 |
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{ |
268 |
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if (!duplicate_ptr(target_p)) |
269 |
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{ |
270 |
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if (ntargets >= ConfigFileEntry.max_targets) |
271 |
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{ |
272 |
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sendto_one(source_p, form_str(ERR_TOOMANYTARGETS), |
273 |
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ID_or_name(&me, client_p), |
274 |
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ID_or_name(source_p, client_p), nick, |
275 |
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ConfigFileEntry.max_targets); |
276 |
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return (1); |
277 |
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} |
278 |
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targets[ntargets].ptr = (void *)target_p; |
279 |
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targets[ntargets].type = ENTITY_CLIENT; |
280 |
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targets[ntargets++].flags = 0; |
281 |
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} |
282 |
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continue; |
283 |
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} |
284 |
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285 |
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/* @#channel or +#channel message ? */ |
286 |
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287 |
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type = 0; |
288 |
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with_prefix = nick; |
289 |
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/* allow %+@ if someone wants to do that */ |
290 |
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for (; ;) |
291 |
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{ |
292 |
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if (*nick == '@') |
293 |
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type |= CHFL_CHANOP; |
294 |
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#ifdef HALFOPS |
295 |
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else if (*nick == '%') |
296 |
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type |= CHFL_CHANOP | CHFL_HALFOP; |
297 |
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#endif |
298 |
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else if (*nick == '+') |
299 |
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type |= CHFL_CHANOP | CHFL_HALFOP | CHFL_VOICE; |
300 |
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else |
301 |
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break; |
302 |
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nick++; |
303 |
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} |
304 |
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305 |
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if (type != 0) |
306 |
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{ |
307 |
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/* suggested by Mortiis */ |
308 |
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if (*nick == '\0') /* if its a '\0' dump it, there is no recipient */ |
309 |
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{ |
310 |
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sendto_one(source_p, form_str(ERR_NORECIPIENT), |
311 |
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ID_or_name(&me, client_p), |
312 |
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ID_or_name(source_p, client_p), command); |
313 |
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continue; |
314 |
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} |
315 |
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316 |
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/* At this point, nick+1 should be a channel name i.e. #foo or &foo |
317 |
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* if the channel is found, fine, if not report an error |
318 |
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*/ |
319 |
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320 |
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if ((chptr = hash_find_channel(nick)) != NULL) |
321 |
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{ |
322 |
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if (!has_member_flags(find_channel_link(source_p, chptr), |
323 |
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CHFL_CHANOP|CHFL_HALFOP|CHFL_VOICE)) |
324 |
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{ |
325 |
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sendto_one(source_p, form_str(ERR_CHANOPRIVSNEEDED), |
326 |
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ID_or_name(&me, client_p), |
327 |
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ID_or_name(source_p, client_p), with_prefix); |
328 |
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return(-1); |
329 |
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} |
330 |
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331 |
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if (!duplicate_ptr(chptr)) |
332 |
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{ |
333 |
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if (ntargets >= ConfigFileEntry.max_targets) |
334 |
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{ |
335 |
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sendto_one(source_p, form_str(ERR_TOOMANYTARGETS), |
336 |
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ID_or_name(&me, client_p), |
337 |
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ID_or_name(source_p, client_p), nick, |
338 |
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ConfigFileEntry.max_targets); |
339 |
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return(1); |
340 |
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} |
341 |
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targets[ntargets].ptr = (void *)chptr; |
342 |
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targets[ntargets].type = ENTITY_CHANOPS_ON_CHANNEL; |
343 |
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targets[ntargets++].flags = type; |
344 |
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} |
345 |
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} |
346 |
|
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else |
347 |
|
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{ |
348 |
michael |
885 |
if (p_or_n != NOTICE) |
349 |
adx |
30 |
sendto_one(source_p, form_str(ERR_NOSUCHNICK), |
350 |
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ID_or_name(&me, client_p), |
351 |
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ID_or_name(source_p, client_p), nick); |
352 |
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} |
353 |
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continue; |
354 |
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} |
355 |
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|
356 |
|
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if ((*nick == '$') || strchr(nick, '@') != NULL) |
357 |
|
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{ |
358 |
|
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handle_special(p_or_n, command, client_p, source_p, nick, text); |
359 |
|
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} |
360 |
|
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else |
361 |
|
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{ |
362 |
michael |
885 |
if (p_or_n != NOTICE) |
363 |
adx |
30 |
{ |
364 |
michael |
606 |
if (!IsDigit(*nick) || MyClient(source_p)) |
365 |
adx |
30 |
sendto_one(source_p, form_str(ERR_NOSUCHNICK), |
366 |
|
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ID_or_name(&me, client_p), |
367 |
|
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ID_or_name(source_p, client_p), nick); |
368 |
|
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} |
369 |
|
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} |
370 |
|
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/* continue; */ |
371 |
|
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} |
372 |
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|
373 |
|
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return(1); |
374 |
|
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} |
375 |
|
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|
376 |
|
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/* duplicate_ptr() |
377 |
|
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* |
378 |
|
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* inputs - pointer to check |
379 |
|
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* - pointer to table of entities |
380 |
|
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* - number of valid entities so far |
381 |
|
|
* output - YES if duplicate pointer in table, NO if not. |
382 |
|
|
* note, this does the canonize using pointers |
383 |
|
|
* side effects - NONE |
384 |
|
|
*/ |
385 |
|
|
static int |
386 |
|
|
duplicate_ptr(void *ptr) |
387 |
|
|
{ |
388 |
|
|
int i; |
389 |
|
|
|
390 |
|
|
for (i = 0; i < ntargets; i++) |
391 |
|
|
{ |
392 |
|
|
if (targets[i].ptr == ptr) |
393 |
|
|
return(1); |
394 |
|
|
} |
395 |
|
|
|
396 |
|
|
return(0); |
397 |
|
|
} |
398 |
|
|
|
399 |
|
|
/* msg_channel() |
400 |
|
|
* |
401 |
|
|
* inputs - flag privmsg or notice |
402 |
|
|
* - pointer to command "PRIVMSG" or "NOTICE" |
403 |
|
|
* - pointer to client_p |
404 |
|
|
* - pointer to source_p |
405 |
|
|
* - pointer to channel |
406 |
|
|
* output - NONE |
407 |
|
|
* side effects - message given channel |
408 |
|
|
*/ |
409 |
|
|
static void |
410 |
|
|
msg_channel(int p_or_n, const char *command, struct Client *client_p, |
411 |
|
|
struct Client *source_p, struct Channel *chptr, char *text) |
412 |
|
|
{ |
413 |
|
|
int result; |
414 |
|
|
|
415 |
|
|
if (MyClient(source_p)) |
416 |
|
|
{ |
417 |
|
|
/* idle time shouldnt be reset by notices --fl */ |
418 |
|
|
if (p_or_n != NOTICE) |
419 |
michael |
1176 |
source_p->localClient->last_privmsg = CurrentTime; |
420 |
adx |
30 |
} |
421 |
|
|
|
422 |
|
|
/* chanops and voiced can flood their own channel with impunity */ |
423 |
michael |
1173 |
if ((result = can_send(chptr, source_p, NULL)) < 0) |
424 |
adx |
30 |
{ |
425 |
|
|
if (result == CAN_SEND_OPV || |
426 |
|
|
!flood_attack_channel(p_or_n, source_p, chptr, chptr->chname)) |
427 |
|
|
{ |
428 |
|
|
sendto_channel_butone(client_p, source_p, chptr, command, ":%s", text); |
429 |
|
|
} |
430 |
|
|
} |
431 |
|
|
else |
432 |
|
|
{ |
433 |
|
|
if (p_or_n != NOTICE) |
434 |
|
|
sendto_one(source_p, form_str(ERR_CANNOTSENDTOCHAN), |
435 |
|
|
ID_or_name(&me, client_p), |
436 |
|
|
ID_or_name(source_p, client_p), chptr->chname); |
437 |
|
|
} |
438 |
|
|
} |
439 |
|
|
|
440 |
|
|
/* msg_channel_flags() |
441 |
|
|
* |
442 |
|
|
* inputs - flag 0 if PRIVMSG 1 if NOTICE. RFC |
443 |
|
|
* say NOTICE must not auto reply |
444 |
|
|
* - pointer to command, "PRIVMSG" or "NOTICE" |
445 |
|
|
* - pointer to client_p |
446 |
|
|
* - pointer to source_p |
447 |
|
|
* - pointer to channel |
448 |
|
|
* - flags |
449 |
|
|
* - pointer to text to send |
450 |
|
|
* output - NONE |
451 |
|
|
* side effects - message given channel either chanop or voice |
452 |
|
|
*/ |
453 |
|
|
static void |
454 |
|
|
msg_channel_flags(int p_or_n, const char *command, struct Client *client_p, |
455 |
|
|
struct Client *source_p, struct Channel *chptr, |
456 |
|
|
int flags, char *text) |
457 |
|
|
{ |
458 |
|
|
int type; |
459 |
|
|
char c; |
460 |
|
|
|
461 |
|
|
if (flags & CHFL_VOICE) |
462 |
|
|
{ |
463 |
|
|
type = CHFL_VOICE|CHFL_HALFOP|CHFL_CHANOP; |
464 |
|
|
c = '+'; |
465 |
|
|
} |
466 |
|
|
#ifdef HALFOPS |
467 |
|
|
else if (flags & CHFL_HALFOP) |
468 |
|
|
{ |
469 |
|
|
type = CHFL_HALFOP|CHFL_CHANOP; |
470 |
|
|
c = '%'; |
471 |
|
|
} |
472 |
|
|
#endif |
473 |
|
|
else |
474 |
|
|
{ |
475 |
|
|
type = CHFL_CHANOP; |
476 |
|
|
c = '@'; |
477 |
|
|
} |
478 |
|
|
|
479 |
|
|
if (MyClient(source_p)) |
480 |
|
|
{ |
481 |
|
|
/* idletime shouldnt be reset by notice --fl */ |
482 |
|
|
if (p_or_n != NOTICE) |
483 |
michael |
1176 |
source_p->localClient->last_privmsg = CurrentTime; |
484 |
adx |
30 |
|
485 |
|
|
sendto_channel_local_butone(source_p, type, chptr, ":%s!%s@%s %s %c%s :%s", |
486 |
|
|
source_p->name, source_p->username, |
487 |
|
|
source_p->host, command, c, chptr->chname, text); |
488 |
|
|
} |
489 |
|
|
else |
490 |
|
|
{ |
491 |
|
|
/* |
492 |
|
|
* another good catch, lee. we never would echo to remote clients anyway, |
493 |
|
|
* so use slightly less intensive sendto_channel_local() |
494 |
|
|
*/ |
495 |
michael |
1243 |
sendto_channel_local(type, 1, chptr, ":%s!%s@%s %s %c%s :%s", |
496 |
adx |
30 |
source_p->name, source_p->username, |
497 |
|
|
source_p->host, command, c, chptr->chname, text); |
498 |
|
|
} |
499 |
|
|
|
500 |
|
|
if (chptr->chname[0] != '#') |
501 |
|
|
return; |
502 |
|
|
|
503 |
|
|
sendto_channel_remote(source_p, client_p, type, CAP_CHW, CAP_TS6, chptr, |
504 |
|
|
":%s %s %c%s :%s", source_p->name, command, c, chptr->chname, text); |
505 |
|
|
sendto_channel_remote(source_p, client_p, type, CAP_CHW|CAP_TS6, NOCAPS, chptr, |
506 |
|
|
":%s %s %c%s :%s", ID(source_p), command, c, chptr->chname, text); |
507 |
|
|
/* non CAP_CHW servers? */ |
508 |
|
|
} |
509 |
|
|
|
510 |
|
|
/* msg_client() |
511 |
|
|
* |
512 |
|
|
* inputs - flag 0 if PRIVMSG 1 if NOTICE. RFC |
513 |
|
|
* say NOTICE must not auto reply |
514 |
|
|
* - pointer to command, "PRIVMSG" or "NOTICE" |
515 |
|
|
* - pointer to source_p source (struct Client *) |
516 |
|
|
* - pointer to target_p target (struct Client *) |
517 |
|
|
* - pointer to text |
518 |
|
|
* output - NONE |
519 |
|
|
* side effects - message given channel either chanop or voice |
520 |
|
|
*/ |
521 |
|
|
static void |
522 |
|
|
msg_client(int p_or_n, const char *command, struct Client *source_p, |
523 |
|
|
struct Client *target_p, char *text) |
524 |
|
|
{ |
525 |
michael |
1173 |
if (MyConnect(source_p)) |
526 |
adx |
30 |
{ |
527 |
|
|
/* |
528 |
michael |
1176 |
* reset idle time for message only if it's not a notice |
529 |
adx |
30 |
*/ |
530 |
michael |
1176 |
if ((p_or_n != NOTICE)) |
531 |
|
|
source_p->localClient->last_privmsg = CurrentTime; |
532 |
michael |
1173 |
|
533 |
|
|
if ((p_or_n != NOTICE) && target_p->away) |
534 |
|
|
sendto_one(source_p, form_str(RPL_AWAY), me.name, |
535 |
|
|
source_p->name, target_p->name, target_p->away); |
536 |
michael |
1175 |
|
537 |
|
|
if (HasUMode(target_p, UMODE_REGONLY) && target_p != source_p) |
538 |
michael |
1173 |
{ |
539 |
michael |
1175 |
if (!HasUMode(source_p, UMODE_REGISTERED|UMODE_OPER)) |
540 |
|
|
{ |
541 |
|
|
if (p_or_n != NOTICE) |
542 |
|
|
sendto_one(source_p, form_str(ERR_NONONREG), me.name, source_p->name, |
543 |
|
|
target_p->name); |
544 |
|
|
return; |
545 |
|
|
} |
546 |
michael |
1173 |
} |
547 |
adx |
30 |
} |
548 |
|
|
|
549 |
|
|
if (MyClient(target_p)) |
550 |
|
|
{ |
551 |
michael |
1219 |
if (!IsServer(source_p) && HasUMode(target_p, UMODE_CALLERID|UMODE_SOFTCALLERID)) |
552 |
adx |
30 |
{ |
553 |
|
|
/* Here is the anti-flood bot/spambot code -db */ |
554 |
michael |
1219 |
if (accept_message(source_p, target_p) || HasFlag(source_p, FLAGS_SERVICE) || |
555 |
|
|
(HasUMode(source_p, UMODE_OPER) && (ConfigFileEntry.opers_bypass_callerid == 1))) |
556 |
adx |
30 |
{ |
557 |
|
|
sendto_one(target_p, ":%s!%s@%s %s %s :%s", |
558 |
|
|
source_p->name, source_p->username, |
559 |
|
|
source_p->host, command, target_p->name, text); |
560 |
|
|
} |
561 |
|
|
else |
562 |
|
|
{ |
563 |
|
|
/* check for accept, flag recipient incoming message */ |
564 |
|
|
if (p_or_n != NOTICE) |
565 |
stu |
666 |
sendto_one(source_p, form_str(RPL_TARGUMODEG), |
566 |
adx |
30 |
ID_or_name(&me, source_p->from), |
567 |
|
|
ID_or_name(source_p, source_p->from), target_p->name); |
568 |
|
|
|
569 |
|
|
if ((target_p->localClient->last_caller_id_time + |
570 |
|
|
ConfigFileEntry.caller_id_wait) < CurrentTime) |
571 |
|
|
{ |
572 |
|
|
if (p_or_n != NOTICE) |
573 |
|
|
sendto_one(source_p, form_str(RPL_TARGNOTIFY), |
574 |
|
|
ID_or_name(&me, source_p->from), |
575 |
|
|
ID_or_name(source_p, source_p->from), target_p->name); |
576 |
|
|
|
577 |
|
|
sendto_one(target_p, form_str(RPL_UMODEGMSG), |
578 |
|
|
me.name, target_p->name, |
579 |
|
|
get_client_name(source_p, HIDE_IP)); |
580 |
|
|
|
581 |
|
|
target_p->localClient->last_caller_id_time = CurrentTime; |
582 |
|
|
|
583 |
|
|
} |
584 |
|
|
/* Only so opers can watch for floods */ |
585 |
|
|
flood_attack_client(p_or_n, source_p, target_p); |
586 |
|
|
} |
587 |
|
|
} |
588 |
|
|
else |
589 |
|
|
{ |
590 |
|
|
/* If the client is remote, we dont perform a special check for |
591 |
|
|
* flooding.. as we wouldnt block their message anyway.. this means |
592 |
|
|
* we dont give warnings.. we then check if theyre opered |
593 |
|
|
* (to avoid flood warnings), lastly if theyre our client |
594 |
|
|
* and flooding -- fl */ |
595 |
michael |
1219 |
if (!MyClient(source_p) || HasUMode(source_p, UMODE_OPER) || |
596 |
adx |
30 |
(MyClient(source_p) && |
597 |
|
|
!flood_attack_client(p_or_n, source_p, target_p))) |
598 |
|
|
sendto_anywhere(target_p, source_p, "%s %s :%s", |
599 |
|
|
command, target_p->name, text); |
600 |
|
|
} |
601 |
|
|
} |
602 |
|
|
else |
603 |
|
|
/* The target is a remote user.. same things apply -- fl */ |
604 |
michael |
1219 |
if (!MyClient(source_p) || HasUMode(source_p, UMODE_OPER) || |
605 |
adx |
30 |
(MyClient(source_p) |
606 |
|
|
&& !flood_attack_client(p_or_n, source_p, target_p))) |
607 |
|
|
sendto_anywhere(target_p, source_p, "%s %s :%s", command, target_p->name, |
608 |
|
|
text); |
609 |
|
|
} |
610 |
|
|
|
611 |
|
|
/* flood_attack_client() |
612 |
|
|
* |
613 |
|
|
* inputs - flag 0 if PRIVMSG 1 if NOTICE. RFC |
614 |
|
|
* say NOTICE must not auto reply |
615 |
|
|
* - pointer to source Client |
616 |
|
|
* - pointer to target Client |
617 |
|
|
* output - 1 if target is under flood attack |
618 |
|
|
* side effects - check for flood attack on target target_p |
619 |
|
|
*/ |
620 |
|
|
static int |
621 |
|
|
flood_attack_client(int p_or_n, struct Client *source_p, |
622 |
|
|
struct Client *target_p) |
623 |
|
|
{ |
624 |
|
|
int delta; |
625 |
|
|
|
626 |
|
|
if (GlobalSetOptions.floodcount && MyConnect(target_p) |
627 |
|
|
&& IsClient(source_p) && !IsConfCanFlood(source_p)) |
628 |
|
|
{ |
629 |
|
|
if ((target_p->localClient->first_received_message_time + 1) |
630 |
|
|
< CurrentTime) |
631 |
|
|
{ |
632 |
|
|
delta = |
633 |
|
|
CurrentTime - target_p->localClient->first_received_message_time; |
634 |
|
|
target_p->localClient->received_number_of_privmsgs -= delta; |
635 |
|
|
target_p->localClient->first_received_message_time = CurrentTime; |
636 |
michael |
948 |
|
637 |
adx |
30 |
if (target_p->localClient->received_number_of_privmsgs <= 0) |
638 |
|
|
{ |
639 |
|
|
target_p->localClient->received_number_of_privmsgs = 0; |
640 |
michael |
1219 |
DelFlag(target_p, FLAGS_FLOOD_NOTICED); |
641 |
adx |
30 |
} |
642 |
|
|
} |
643 |
|
|
|
644 |
|
|
if ((target_p->localClient->received_number_of_privmsgs >= |
645 |
michael |
1219 |
GlobalSetOptions.floodcount) || HasFlag(target_p, FLAGS_FLOOD_NOTICED)) |
646 |
adx |
30 |
{ |
647 |
michael |
1219 |
if (!HasFlag(target_p, FLAGS_FLOOD_NOTICED)) |
648 |
adx |
30 |
{ |
649 |
|
|
sendto_realops_flags(UMODE_BOTS, L_ALL, |
650 |
|
|
"Possible Flooder %s on %s target: %s", |
651 |
|
|
get_client_name(source_p, HIDE_IP), |
652 |
|
|
source_p->servptr->name, target_p->name); |
653 |
michael |
1219 |
AddFlag(target_p, FLAGS_FLOOD_NOTICED); |
654 |
adx |
30 |
/* add a bit of penalty */ |
655 |
|
|
target_p->localClient->received_number_of_privmsgs += 2; |
656 |
|
|
} |
657 |
|
|
|
658 |
|
|
if (MyClient(source_p) && (p_or_n != NOTICE)) |
659 |
|
|
sendto_one(source_p, |
660 |
|
|
":%s NOTICE %s :*** Message to %s throttled due to flooding", |
661 |
|
|
me.name, source_p->name, target_p->name); |
662 |
|
|
return(1); |
663 |
|
|
} |
664 |
|
|
else |
665 |
|
|
target_p->localClient->received_number_of_privmsgs++; |
666 |
|
|
} |
667 |
|
|
|
668 |
|
|
return(0); |
669 |
|
|
} |
670 |
|
|
|
671 |
|
|
/* flood_attack_channel() |
672 |
|
|
* |
673 |
|
|
* inputs - flag 0 if PRIVMSG 1 if NOTICE. RFC |
674 |
|
|
* says NOTICE must not auto reply |
675 |
|
|
* - pointer to source Client |
676 |
|
|
* - pointer to target channel |
677 |
|
|
* output - 1 if target is under flood attack |
678 |
|
|
* side effects - check for flood attack on target chptr |
679 |
|
|
*/ |
680 |
|
|
static int |
681 |
|
|
flood_attack_channel(int p_or_n, struct Client *source_p, |
682 |
|
|
struct Channel *chptr, char *chname) |
683 |
|
|
{ |
684 |
|
|
int delta; |
685 |
|
|
|
686 |
|
|
if (GlobalSetOptions.floodcount && !IsConfCanFlood(source_p)) |
687 |
|
|
{ |
688 |
|
|
if ((chptr->first_received_message_time + 1) < CurrentTime) |
689 |
|
|
{ |
690 |
|
|
delta = CurrentTime - chptr->first_received_message_time; |
691 |
|
|
chptr->received_number_of_privmsgs -= delta; |
692 |
|
|
chptr->first_received_message_time = CurrentTime; |
693 |
|
|
if (chptr->received_number_of_privmsgs <= 0) |
694 |
|
|
{ |
695 |
|
|
chptr->received_number_of_privmsgs = 0; |
696 |
|
|
ClearFloodNoticed(chptr); |
697 |
|
|
} |
698 |
|
|
} |
699 |
|
|
|
700 |
|
|
if ((chptr->received_number_of_privmsgs >= GlobalSetOptions.floodcount) |
701 |
|
|
|| IsSetFloodNoticed(chptr)) |
702 |
|
|
{ |
703 |
|
|
if (!IsSetFloodNoticed(chptr)) |
704 |
|
|
{ |
705 |
|
|
sendto_realops_flags(UMODE_BOTS, L_ALL, |
706 |
|
|
"Possible Flooder %s on %s target: %s", |
707 |
|
|
get_client_name(source_p, HIDE_IP), |
708 |
|
|
source_p->servptr->name, chptr->chname); |
709 |
|
|
SetFloodNoticed(chptr); |
710 |
|
|
|
711 |
|
|
/* Add a bit of penalty */ |
712 |
|
|
chptr->received_number_of_privmsgs += 2; |
713 |
|
|
} |
714 |
|
|
if (MyClient(source_p) && (p_or_n != NOTICE)) |
715 |
|
|
sendto_one(source_p, |
716 |
|
|
":%s NOTICE %s :*** Message to %s throttled due to flooding", |
717 |
|
|
me.name, source_p->name, chname); |
718 |
|
|
return(1); |
719 |
|
|
} |
720 |
|
|
else |
721 |
|
|
chptr->received_number_of_privmsgs++; |
722 |
|
|
} |
723 |
|
|
|
724 |
|
|
return(0); |
725 |
|
|
} |
726 |
|
|
|
727 |
|
|
/* handle_special() |
728 |
|
|
* |
729 |
|
|
* inputs - server pointer |
730 |
|
|
* - client pointer |
731 |
|
|
* - nick stuff to grok for opers |
732 |
|
|
* - text to send if grok |
733 |
|
|
* output - none |
734 |
|
|
* side effects - old style username@server is handled here for non opers |
735 |
|
|
* opers are allowed username%hostname@server |
736 |
|
|
* all the traditional oper type messages are also parsed here. |
737 |
|
|
* i.e. "/msg #some.host." |
738 |
|
|
* However, syntax has been changed. |
739 |
|
|
* previous syntax "/msg #some.host.mask" |
740 |
|
|
* now becomes "/msg $#some.host.mask" |
741 |
|
|
* previous syntax of: "/msg $some.server.mask" remains |
742 |
|
|
* This disambiguates the syntax. |
743 |
|
|
* |
744 |
|
|
* XXX N.B. dalnet changed it to nick@server as have other servers. |
745 |
|
|
* we will stick with tradition for now. |
746 |
|
|
* - Dianora |
747 |
|
|
*/ |
748 |
|
|
static void |
749 |
|
|
handle_special(int p_or_n, const char *command, struct Client *client_p, |
750 |
|
|
struct Client *source_p, char *nick, char *text) |
751 |
|
|
{ |
752 |
|
|
struct Client *target_p; |
753 |
|
|
char *host; |
754 |
|
|
char *server; |
755 |
|
|
char *s; |
756 |
|
|
int count; |
757 |
|
|
|
758 |
|
|
/* |
759 |
|
|
* user[%host]@server addressed? |
760 |
|
|
*/ |
761 |
|
|
if ((server = strchr(nick, '@')) != NULL) |
762 |
|
|
{ |
763 |
|
|
count = 0; |
764 |
|
|
|
765 |
michael |
1219 |
if ((host = strchr(nick, '%')) && !HasUMode(source_p, UMODE_OPER)) |
766 |
adx |
30 |
{ |
767 |
|
|
sendto_one(source_p, form_str(ERR_NOPRIVILEGES), |
768 |
|
|
ID_or_name(&me, client_p), |
769 |
|
|
ID_or_name(source_p, client_p)); |
770 |
|
|
return; |
771 |
|
|
} |
772 |
|
|
|
773 |
michael |
1169 |
if ((target_p = hash_find_server(server + 1)) != NULL) |
774 |
adx |
30 |
{ |
775 |
|
|
if (!IsMe(target_p)) |
776 |
|
|
{ |
777 |
|
|
/* |
778 |
|
|
* Not destined for a user on me :-( |
779 |
|
|
*/ |
780 |
|
|
sendto_one(target_p, ":%s %s %s :%s", |
781 |
|
|
ID_or_name(source_p, target_p->from), |
782 |
|
|
command, nick, text); |
783 |
|
|
if ((p_or_n != NOTICE) && MyClient(source_p)) |
784 |
michael |
1176 |
source_p->localClient->last_privmsg = CurrentTime; |
785 |
adx |
30 |
return; |
786 |
|
|
} |
787 |
|
|
|
788 |
|
|
*server = '\0'; |
789 |
|
|
|
790 |
|
|
if (host != NULL) |
791 |
|
|
*host++ = '\0'; |
792 |
|
|
|
793 |
|
|
/* Check if someones msg'ing opers@our.server */ |
794 |
|
|
if (strcmp(nick, "opers") == 0) |
795 |
|
|
{ |
796 |
michael |
1219 |
if (!HasUMode(source_p, UMODE_OPER)) |
797 |
adx |
30 |
sendto_one(source_p, form_str(ERR_NOPRIVILEGES), |
798 |
|
|
ID_or_name(&me, client_p), |
799 |
|
|
ID_or_name(source_p, client_p)); |
800 |
|
|
else |
801 |
|
|
sendto_realops_flags(UMODE_ALL, L_ALL, "To opers: From: %s: %s", |
802 |
|
|
source_p->name, text); |
803 |
|
|
return; |
804 |
|
|
} |
805 |
|
|
|
806 |
|
|
/* |
807 |
|
|
* Look for users which match the destination host |
808 |
|
|
* (no host == wildcard) and if one and one only is |
809 |
|
|
* found connected to me, deliver message! |
810 |
|
|
*/ |
811 |
|
|
target_p = find_userhost(nick, host, &count); |
812 |
|
|
|
813 |
|
|
if (target_p != NULL) |
814 |
|
|
{ |
815 |
|
|
if (server != NULL) |
816 |
|
|
*server = '@'; |
817 |
|
|
if (host != NULL) |
818 |
|
|
*--host = '%'; |
819 |
|
|
|
820 |
|
|
if (count == 1) |
821 |
|
|
{ |
822 |
|
|
sendto_one(target_p, ":%s!%s@%s %s %s :%s", |
823 |
|
|
source_p->name, source_p->username, source_p->host, |
824 |
|
|
command, nick, text); |
825 |
|
|
if ((p_or_n != NOTICE) && MyClient(source_p)) |
826 |
michael |
1176 |
source_p->localClient->last_privmsg = CurrentTime; |
827 |
adx |
30 |
} |
828 |
|
|
else |
829 |
|
|
sendto_one(source_p, form_str(ERR_TOOMANYTARGETS), |
830 |
|
|
ID_or_name(&me, client_p), |
831 |
|
|
ID_or_name(source_p, client_p), nick, |
832 |
|
|
ConfigFileEntry.max_targets); |
833 |
|
|
} |
834 |
|
|
} |
835 |
|
|
else if (server && *(server+1) && (target_p == NULL)) |
836 |
|
|
sendto_one(source_p, form_str(ERR_NOSUCHSERVER), |
837 |
|
|
ID_or_name(&me, client_p), |
838 |
|
|
ID_or_name(source_p, client_p), server+1); |
839 |
|
|
else if (server && (target_p == NULL)) |
840 |
|
|
sendto_one(source_p, form_str(ERR_NOSUCHNICK), |
841 |
|
|
ID_or_name(&me, client_p), |
842 |
|
|
ID_or_name(source_p, client_p), nick); |
843 |
|
|
return; |
844 |
|
|
} |
845 |
|
|
|
846 |
michael |
1219 |
if (!HasUMode(source_p, UMODE_OPER)) |
847 |
adx |
30 |
{ |
848 |
|
|
sendto_one(source_p, form_str(ERR_NOPRIVILEGES), |
849 |
|
|
ID_or_name(&me, client_p), |
850 |
|
|
ID_or_name(source_p, client_p)); |
851 |
|
|
return; |
852 |
|
|
} |
853 |
|
|
|
854 |
|
|
/* |
855 |
|
|
* the following two cases allow masks in NOTICEs |
856 |
|
|
* (for OPERs only) |
857 |
|
|
* |
858 |
|
|
* Armin, 8Jun90 (gruner@informatik.tu-muenchen.de) |
859 |
|
|
*/ |
860 |
|
|
if (*nick == '$') |
861 |
|
|
{ |
862 |
|
|
if ((*(nick+1) == '$' || *(nick+1) == '#')) |
863 |
|
|
nick++; |
864 |
michael |
1219 |
else if (MyClient(source_p) && HasUMode(source_p, UMODE_OPER)) |
865 |
adx |
30 |
{ |
866 |
|
|
sendto_one(source_p, |
867 |
|
|
":%s NOTICE %s :The command %s %s is no longer supported, please use $%s", |
868 |
|
|
me.name, source_p->name, command, nick, nick); |
869 |
|
|
return; |
870 |
|
|
} |
871 |
|
|
|
872 |
|
|
if ((s = strrchr(nick, '.')) == NULL) |
873 |
|
|
{ |
874 |
|
|
sendto_one(source_p, form_str(ERR_NOTOPLEVEL), |
875 |
|
|
me.name, source_p->name, nick); |
876 |
|
|
return; |
877 |
|
|
} |
878 |
|
|
|
879 |
|
|
while (*++s) |
880 |
|
|
if (*s == '.' || *s == '*' || *s == '?') |
881 |
|
|
break; |
882 |
|
|
|
883 |
|
|
if (*s == '*' || *s == '?') |
884 |
|
|
{ |
885 |
|
|
sendto_one(source_p, form_str(ERR_WILDTOPLEVEL), |
886 |
|
|
ID_or_name(&me, client_p), |
887 |
|
|
ID_or_name(source_p, client_p), nick); |
888 |
|
|
return; |
889 |
|
|
} |
890 |
|
|
|
891 |
|
|
sendto_match_butone(IsServer(client_p) ? client_p : NULL, source_p, |
892 |
|
|
nick + 1, (*nick == '#') ? MATCH_HOST : MATCH_SERVER, |
893 |
|
|
"%s $%s :%s", command, nick, text); |
894 |
|
|
|
895 |
|
|
if ((p_or_n != NOTICE) && MyClient(source_p)) |
896 |
michael |
1176 |
source_p->localClient->last_privmsg = CurrentTime; |
897 |
adx |
30 |
|
898 |
|
|
return; |
899 |
|
|
} |
900 |
|
|
} |
901 |
|
|
|
902 |
|
|
/* |
903 |
|
|
* find_userhost - find a user@host (server or user). |
904 |
|
|
* inputs - user name to look for |
905 |
|
|
* - host name to look for |
906 |
|
|
* - pointer to count of number of matches found |
907 |
|
|
* outputs - pointer to client if found |
908 |
|
|
* - count is updated |
909 |
|
|
* side effects - none |
910 |
|
|
* |
911 |
|
|
*/ |
912 |
|
|
static struct Client * |
913 |
|
|
find_userhost(char *user, char *host, int *count) |
914 |
|
|
{ |
915 |
|
|
struct Client *c2ptr; |
916 |
|
|
struct Client *res = NULL; |
917 |
|
|
dlink_node *lc2ptr; |
918 |
|
|
|
919 |
|
|
*count = 0; |
920 |
|
|
|
921 |
|
|
if (collapse(user) != NULL) |
922 |
|
|
{ |
923 |
|
|
DLINK_FOREACH(lc2ptr, local_client_list.head) |
924 |
|
|
{ |
925 |
|
|
c2ptr = lc2ptr->data; |
926 |
|
|
|
927 |
|
|
if (!IsClient(c2ptr)) /* something other than a client */ |
928 |
|
|
continue; |
929 |
|
|
|
930 |
|
|
if ((!host || match(host, c2ptr->host)) && |
931 |
|
|
irccmp(user, c2ptr->username) == 0) |
932 |
|
|
{ |
933 |
|
|
(*count)++; |
934 |
|
|
res = c2ptr; |
935 |
|
|
} |
936 |
|
|
} |
937 |
|
|
} |
938 |
|
|
|
939 |
|
|
return(res); |
940 |
|
|
} |
941 |
michael |
1230 |
|
942 |
|
|
static struct Message privmsg_msgtab = { |
943 |
|
|
"PRIVMSG", 0, 0, 0, MAXPARA, MFLG_SLOW | MFLG_UNREG, 0, |
944 |
|
|
{m_unregistered, m_privmsg, m_privmsg, m_ignore, m_privmsg, m_ignore} |
945 |
|
|
}; |
946 |
|
|
|
947 |
|
|
static struct Message notice_msgtab = { |
948 |
|
|
"NOTICE", 0, 0, 0, MAXPARA, MFLG_SLOW, 0, |
949 |
|
|
{m_unregistered, m_notice, m_notice, m_ignore, m_notice, m_ignore} |
950 |
|
|
}; |
951 |
|
|
|
952 |
|
|
static void |
953 |
|
|
module_init(void) |
954 |
|
|
{ |
955 |
|
|
mod_add_cmd(&privmsg_msgtab); |
956 |
|
|
mod_add_cmd(¬ice_msgtab); |
957 |
|
|
} |
958 |
|
|
|
959 |
|
|
static void |
960 |
|
|
module_exit(void) |
961 |
|
|
{ |
962 |
|
|
mod_del_cmd(&privmsg_msgtab); |
963 |
|
|
mod_del_cmd(¬ice_msgtab); |
964 |
|
|
} |
965 |
|
|
|
966 |
|
|
struct module module_entry = { |
967 |
|
|
.node = { NULL, NULL, NULL }, |
968 |
|
|
.name = NULL, |
969 |
|
|
.version = "$Revision$", |
970 |
|
|
.handle = NULL, |
971 |
|
|
.modinit = module_init, |
972 |
|
|
.modexit = module_exit, |
973 |
|
|
.flags = MODULE_FLAG_CORE |
974 |
|
|
}; |