mirror of
https://github.com/matrix-construct/construct
synced 2024-12-28 00:14:07 +01:00
9d0a959bb5
* Simplifies the export declarations for module developers. While
MAPI III utilized a flexible key-value vector to eliminate positional
arguments in a header initializer, now the developer simply makes
a list of pointers to what they want to export for injection into
IRCd. Example:
mapi::header IRCD_MODULE
{
"mymod",
"My module adds a command, a hook, and a CLICAP",
&my_cmdtab,
&some_hook,
&clicaptab
};
* Distributes the handlers for items passed to the above vector.
Anyone can add a type-handler to the module system from anywhere in IRCd
(and other modules?) When your type is encountered a handler is called
providing the symbol name to read out of the module. Example in parser.cc:
mods::add_loader<Message>([]
(mod &loading, const std::string &symbol)
{
auto &msg(get<Message>(loading, symbol));
add_command(msg.name, msg);
});
1061 lines
28 KiB
C++
1061 lines
28 KiB
C++
/*
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* ircd-ratbox: A slightly useful 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) 1990 Jarkko Oikarinen and University of Oulu, Co Center
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* Copyright (C) 1996-2002 Hybrid Development Team
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* Copyright (C) 2002-2005 ircd-ratbox development team
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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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using namespace ircd;
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static const char message_desc[] =
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"Provides the PRIVMSG and NOTICE commands to send messages to users and channels";
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static void m_message(enum message_type, struct MsgBuf *, client::client &, client::client &, int, const char **);
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static void m_privmsg(struct MsgBuf *, client::client &, client::client &, int, const char **);
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static void m_notice(struct MsgBuf *, client::client &, client::client &, int, const char **);
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static void expire_tgchange(void *unused);
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static struct ev_entry *expire_tgchange_event;
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static int
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modinit(void)
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{
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expire_tgchange_event = rb_event_addish("expire_tgchange", expire_tgchange, NULL, 300);
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expire_tgchange(NULL);
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return 0;
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}
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static void
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moddeinit(void)
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{
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rb_event_delete(expire_tgchange_event);
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}
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struct Message privmsg_msgtab = {
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"PRIVMSG", 0, 0, 0, 0,
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{mg_unreg, {m_privmsg, 0}, {m_privmsg, 0}, mg_ignore, mg_ignore, {m_privmsg, 0}}
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};
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struct Message notice_msgtab = {
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"NOTICE", 0, 0, 0, 0,
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{mg_unreg, {m_notice, 0}, {m_notice, 0}, {m_notice, 0}, mg_ignore, {m_notice, 0}}
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};
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mapi_clist_av1 message_clist[] = { &privmsg_msgtab, ¬ice_msgtab, NULL };
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DECLARE_MODULE_AV2(message, modinit, moddeinit, message_clist, NULL, NULL, NULL, NULL, message_desc);
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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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static int build_target_list(enum message_type msgtype,
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client::client &client,
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client::client &source, const char *nicks_channels, const char *text);
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static bool flood_attack_client(enum message_type msgtype, client::client &source, client::client *target_p);
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/* Fifteen seconds should be plenty for a client to reply a ctcp */
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#define LARGE_CTCP_TIME 15
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#define ENTITY_NONE 0
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#define ENTITY_CHANNEL 1
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#define ENTITY_CHANNEL_OPMOD 2
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#define ENTITY_CHANOPS_ON_CHANNEL 3
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#define ENTITY_CLIENT 4
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static struct entity targets[512];
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static int ntargets = 0;
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static bool duplicate_ptr(void *);
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static void msg_channel(enum message_type msgtype,
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client::client &client,
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client::client &source, chan::chan *chptr, const char *text);
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static void msg_channel_opmod(enum message_type msgtype,
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client::client &client,
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client::client &source, chan::chan *chptr,
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const char *text);
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static void msg_channel_flags(enum message_type msgtype,
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client::client &client,
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client::client &source,
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chan::chan *chptr, int flags, const char *text);
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static void msg_client(enum message_type msgtype,
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client::client &source, client::client *target_p, const char *text);
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static void handle_special(enum message_type msgtype,
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client::client &client, client::client &source, const char *nick,
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const 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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const char *cmdname[MESSAGE_TYPE_COUNT]
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{
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"NOTICE",
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"PRIVMSG",
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nullptr,
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};
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static void
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m_privmsg(struct MsgBuf *msgbuf_p, client::client &client, client::client &source, int parc, const char *parv[])
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{
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m_message(MESSAGE_TYPE_PRIVMSG, msgbuf_p, client, source, parc, parv);
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}
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static void
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m_notice(struct MsgBuf *msgbuf_p, client::client &client, client::client &source, int parc, const char *parv[])
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{
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m_message(MESSAGE_TYPE_NOTICE, msgbuf_p, client, source, 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 &client
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* - pointer to &source
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* - pointer to channel
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*/
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static void
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m_message(enum message_type msgtype, struct MsgBuf *msgbuf_p,
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client::client &client, client::client &source, int parc, const char *parv[])
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{
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int i;
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if(parc < 2 || EmptyString(parv[1]))
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{
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if(msgtype != MESSAGE_TYPE_NOTICE)
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sendto_one(&source, form_str(ERR_NORECIPIENT), me.name,
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source.name, cmdname[msgtype]);
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return;
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}
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if(parc < 3 || EmptyString(parv[2]))
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{
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if(msgtype != MESSAGE_TYPE_NOTICE)
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sendto_one(&source, form_str(ERR_NOTEXTTOSEND), me.name, source.name);
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return;
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}
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/* Finish the flood grace period if theyre not messaging themselves
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* as some clients (ircN) do this as a "lag check"
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*/
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if(my(source) && !is_flood_done(source) && irccmp(source.name, parv[1]))
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flood_endgrace(&source);
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if(build_target_list(msgtype, client, source, parv[1], parv[2]) < 0)
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{
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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(msgtype, client, source,
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(chan::chan *) targets[i].ptr, parv[2]);
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break;
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case ENTITY_CHANNEL_OPMOD:
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msg_channel_opmod(msgtype, client, source,
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(chan::chan *) 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(msgtype, client, source,
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(chan::chan *) 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(msgtype, source,
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(client::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 (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 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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static int
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build_target_list(enum message_type msgtype, client::client &client,
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client::client &source, const char *nicks_channels, const char *text)
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{
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int type;
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char *p, *nick, *target_list;
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chan::chan *chptr = NULL;
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client::client *target_p;
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target_list = LOCAL_COPY(nicks_channels); /* skip strcpy for non-lazyleafs */
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ntargets = 0;
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for(nick = rb_strtok_r(target_list, ",", &p); nick; nick = rb_strtok_r(NULL, ",", &p))
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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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if(rfc1459::is_chan_prefix(*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(is_server(client) && *nick == '&')
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continue;
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if((chptr = chan::get(nick, std::nothrow)) != 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, form_str(ERR_TOOMANYTARGETS),
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me.name, source.name, nick);
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return (1);
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}
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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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/* non existant channel */
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else if(msgtype != MESSAGE_TYPE_NOTICE)
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sendto_one_numeric(&source, ERR_NOSUCHNICK,
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form_str(ERR_NOSUCHNICK), nick);
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continue;
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}
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if(my(source))
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target_p = client::find_named_person(nick);
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else
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target_p = client::find_person(nick);
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/* look for a privmsg to another client */
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if(target_p)
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{
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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, form_str(ERR_TOOMANYTARGETS),
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me.name, source.name, nick);
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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;
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}
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continue;
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}
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/* @#channel or +#channel message ? */
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type = 0;
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with_prefix = nick;
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/* allow %+@ if someone wants to do that */
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for(;;)
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{
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if(*nick == '@')
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type |= chan::CHANOP;
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else if(*nick == '+')
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type |= chan::CHANOP | chan::VOICE;
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else
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break;
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nick++;
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}
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if(type != 0)
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{
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/* no recipient.. */
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if(EmptyString(nick))
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{
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sendto_one(&source, form_str(ERR_NORECIPIENT),
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me.name, source.name, cmdname[msgtype]);
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continue;
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}
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/* At this point, nick+1 should be a channel name i.e. #foo or &foo
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* if the channel is found, fine, if not report an error
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*/
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if((chptr = chan::get(nick, std::nothrow)) != NULL)
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{
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chan::membership *msptr;
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msptr = get(chptr->members, source, std::nothrow);
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if(!is_server(source) && !is(source, umode::SERVICE) && !is_chanop(msptr) && !is_voiced(msptr))
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{
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sendto_one(&source, form_str(ERR_CHANOPRIVSNEEDED),
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get_id(&me, &source),
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get_id(&source, &source),
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with_prefix);
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continue;
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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, form_str(ERR_TOOMANYTARGETS),
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me.name, source.name, nick);
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return (1);
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}
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targets[ntargets].ptr = (void *) chptr;
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targets[ntargets].type = ENTITY_CHANOPS_ON_CHANNEL;
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targets[ntargets++].flags = type;
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}
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}
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else if(msgtype != MESSAGE_TYPE_NOTICE)
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{
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sendto_one_numeric(&source, ERR_NOSUCHNICK,
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form_str(ERR_NOSUCHNICK), nick);
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}
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continue;
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}
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if(is_server(client) && *nick == '=' && nick[1] == '#')
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{
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nick++;
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if((chptr = chan::get(nick, std::nothrow)) != 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, form_str(ERR_TOOMANYTARGETS),
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me.name, source.name, nick);
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return (1);
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}
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targets[ntargets].ptr = (void *) chptr;
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targets[ntargets++].type = ENTITY_CHANNEL_OPMOD;
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}
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}
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/* non existant channel */
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else if(msgtype != MESSAGE_TYPE_NOTICE)
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sendto_one_numeric(&source, ERR_NOSUCHNICK,
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form_str(ERR_NOSUCHNICK), nick);
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continue;
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}
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if(strchr(nick, '@') || (is(source, umode::OPER) && (*nick == '$')))
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{
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handle_special(msgtype, client, source, nick, text);
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continue;
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}
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/* no matching anything found - error if not NOTICE */
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if(msgtype != MESSAGE_TYPE_NOTICE)
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{
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/* dont give this numeric when source is local,
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* because its misleading --anfl
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*/
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if(!my(source) && rfc1459::is_digit(*nick))
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sendto_one(&source, ":%s %d %s * :Target left IRC. "
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"Failed to deliver: [%.20s]",
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get_id(&me, &source), ERR_NOSUCHNICK,
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get_id(&source, &source), text);
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else
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sendto_one_numeric(&source, ERR_NOSUCHNICK,
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form_str(ERR_NOSUCHNICK), nick);
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}
|
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|
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}
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return (1);
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}
|
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|
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/*
|
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* duplicate_ptr
|
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*
|
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* inputs - pointer to check
|
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* - pointer to table of entities
|
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* - number of valid entities so far
|
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* output - true if duplicate pointer in table, false if not.
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* note, this does the canonize using pointers
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* side effects - NONE
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*/
|
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static bool
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duplicate_ptr(void *ptr)
|
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{
|
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int i;
|
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for(i = 0; i < ntargets; i++)
|
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if(targets[i].ptr == ptr)
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return true;
|
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return false;
|
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}
|
|
|
|
/*
|
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* msg_channel
|
|
*
|
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* inputs - flag privmsg or notice
|
|
* - pointer to &client
|
|
* - pointer to &source
|
|
* - pointer to channel
|
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* output - NONE
|
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* side effects - message given channel
|
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*
|
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* XXX - We need to rework this a bit, it's a tad ugly. --nenolod
|
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*/
|
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static void
|
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msg_channel(enum message_type msgtype,
|
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client::client &client, client::client &source, chan::chan *chptr,
|
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const char *text)
|
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{
|
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int result;
|
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hook_data_privmsg_channel hdata;
|
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|
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if(my(source))
|
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{
|
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/* idle time shouldnt be reset by notices --fl */
|
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if(msgtype != MESSAGE_TYPE_NOTICE)
|
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source.localClient->last = rb_current_time();
|
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}
|
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|
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hdata.msgtype = msgtype;
|
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hdata.source_p = &source;
|
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hdata.chptr = chptr;
|
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hdata.text = text;
|
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hdata.approved = 0;
|
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hdata.reason = NULL;
|
|
|
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call_hook(h_privmsg_channel, &hdata);
|
|
|
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/* memory buffer address may have changed, update pointer */
|
|
text = hdata.text;
|
|
|
|
if (hdata.approved != 0)
|
|
{
|
|
if (msgtype == MESSAGE_TYPE_PRIVMSG)
|
|
{
|
|
if (!EmptyString(hdata.reason))
|
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sendto_one_numeric(&source, ERR_CANNOTSENDTOCHAN,
|
|
form_str(ERR_CANNOTSENDTOCHAN)" (%s).",
|
|
chptr->name.c_str(),
|
|
hdata.reason);
|
|
else
|
|
sendto_one_numeric(&source, ERR_CANNOTSENDTOCHAN,
|
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form_str(ERR_CANNOTSENDTOCHAN),
|
|
chptr->name.c_str());
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
/* hook may have reduced the string to nothing. */
|
|
if (EmptyString(text))
|
|
{
|
|
/* could be empty after colour stripping and
|
|
* that would cause problems later */
|
|
if(msgtype != MESSAGE_TYPE_NOTICE)
|
|
sendto_one(&source, form_str(ERR_NOTEXTTOSEND), me.name, source.name);
|
|
return;
|
|
}
|
|
|
|
/* chanops and voiced can flood their own channel with impunity */
|
|
if((result = can_send(chptr, &source, NULL)))
|
|
{
|
|
if(result != chan::CAN_SEND_OPV && my(source) &&
|
|
!is(source, umode::OPER) &&
|
|
!tgchange::add_target(source, *chptr))
|
|
{
|
|
sendto_one(&source, form_str(ERR_TARGCHANGE),
|
|
me.name,
|
|
source.name,
|
|
chptr->name.c_str());
|
|
return;
|
|
}
|
|
if(result == chan::CAN_SEND_OPV ||
|
|
!flood_attack_channel(msgtype, &source, chptr))
|
|
{
|
|
sendto_channel_flags(&client, chan::ALL_MEMBERS, &source, chptr,
|
|
"%s %s :%s",
|
|
cmdname[msgtype],
|
|
chptr->name.c_str(),
|
|
text);
|
|
}
|
|
}
|
|
else if(chptr->mode.mode & chan::mode::OPMODERATE &&
|
|
(!(chptr->mode.mode & chan::mode::NOPRIVMSGS) || is_member(chptr, &source)))
|
|
{
|
|
if(my(source) && !is(source, umode::OPER) && !tgchange::add_target(source, *chptr))
|
|
{
|
|
sendto_one(&source, form_str(ERR_TARGCHANGE),
|
|
me.name,
|
|
source.name,
|
|
chptr->name.c_str());
|
|
return;
|
|
}
|
|
|
|
if(!flood_attack_channel(msgtype, &source, chptr))
|
|
sendto_channel_opmod(&client, &source, chptr, cmdname[msgtype], text);
|
|
}
|
|
else
|
|
{
|
|
if(msgtype != MESSAGE_TYPE_NOTICE)
|
|
sendto_one_numeric(&source, ERR_CANNOTSENDTOCHAN,
|
|
form_str(ERR_CANNOTSENDTOCHAN), chptr->name.c_str());
|
|
}
|
|
}
|
|
/*
|
|
* msg_channel_opmod
|
|
*
|
|
* inputs - flag privmsg or notice
|
|
* - pointer to &client
|
|
* - pointer to &source
|
|
* - pointer to channel
|
|
* output - NONE
|
|
* side effects - message given channel ops
|
|
*
|
|
* XXX - We need to rework this a bit, it's a tad ugly. --nenolod
|
|
*/
|
|
static void
|
|
msg_channel_opmod(enum message_type msgtype,
|
|
client::client &client, client::client &source,
|
|
chan::chan *chptr, const char *text)
|
|
{
|
|
hook_data_privmsg_channel hdata;
|
|
|
|
hdata.msgtype = msgtype;
|
|
hdata.source_p = &source;
|
|
hdata.chptr = chptr;
|
|
hdata.text = text;
|
|
hdata.approved = 0;
|
|
hdata.reason = NULL;
|
|
|
|
call_hook(h_privmsg_channel, &hdata);
|
|
|
|
/* memory buffer address may have changed, update pointer */
|
|
text = hdata.text;
|
|
|
|
if (hdata.approved != 0)
|
|
return;
|
|
|
|
/* hook may have reduced the string to nothing. */
|
|
if (EmptyString(text))
|
|
{
|
|
/* could be empty after colour stripping and
|
|
* that would cause problems later */
|
|
if (msgtype != MESSAGE_TYPE_NOTICE)
|
|
sendto_one(&source, form_str(ERR_NOTEXTTOSEND),
|
|
me.name,
|
|
source.name);
|
|
return;
|
|
}
|
|
|
|
if (chptr->mode.mode & chan::mode::OPMODERATE &&
|
|
(!(chptr->mode.mode & chan::mode::NOPRIVMSGS) || is_member(chptr, &source)))
|
|
{
|
|
if (!flood_attack_channel(msgtype, &source, chptr))
|
|
sendto_channel_opmod(&client, &source, chptr, cmdname[msgtype], text);
|
|
}
|
|
else
|
|
{
|
|
if (msgtype != MESSAGE_TYPE_NOTICE)
|
|
sendto_one_numeric(&source, ERR_CANNOTSENDTOCHAN, form_str(ERR_CANNOTSENDTOCHAN),
|
|
chptr->name.c_str());
|
|
}
|
|
}
|
|
|
|
/*
|
|
* msg_channel_flags
|
|
*
|
|
* inputs - flag 0 if PRIVMSG 1 if NOTICE. RFC
|
|
* say NOTICE must not auto reply
|
|
* - pointer to &client
|
|
* - pointer to &source
|
|
* - pointer to channel
|
|
* - flags
|
|
* - pointer to text to send
|
|
* output - NONE
|
|
* side effects - message given channel either chanop or voice
|
|
*/
|
|
static void
|
|
msg_channel_flags(enum message_type msgtype, client::client &client,
|
|
client::client &source, chan::chan *chptr, int flags, const char *text)
|
|
{
|
|
int type;
|
|
char c;
|
|
hook_data_privmsg_channel hdata;
|
|
|
|
if(flags & chan::VOICE)
|
|
{
|
|
type = chan::ONLY_CHANOPSVOICED;
|
|
c = '+';
|
|
}
|
|
else
|
|
{
|
|
type = chan::ONLY_CHANOPS;
|
|
c = '@';
|
|
}
|
|
|
|
if(my(source))
|
|
{
|
|
/* idletime shouldnt be reset by notice --fl */
|
|
if(msgtype != MESSAGE_TYPE_NOTICE)
|
|
source.localClient->last = rb_current_time();
|
|
}
|
|
|
|
hdata.msgtype = msgtype;
|
|
hdata.source_p = &source;
|
|
hdata.chptr = chptr;
|
|
hdata.text = text;
|
|
hdata.approved = 0;
|
|
hdata.reason = NULL;
|
|
|
|
call_hook(h_privmsg_channel, &hdata);
|
|
|
|
/* memory buffer address may have changed, update pointer */
|
|
text = hdata.text;
|
|
|
|
if (hdata.approved != 0)
|
|
return;
|
|
|
|
if (EmptyString(text))
|
|
{
|
|
/* could be empty after colour stripping and
|
|
* that would cause problems later */
|
|
if(msgtype != MESSAGE_TYPE_NOTICE)
|
|
sendto_one(&source, form_str(ERR_NOTEXTTOSEND), me.name, source.name);
|
|
return;
|
|
}
|
|
|
|
sendto_channel_flags(&client, type, &source, chptr, "%s %c%s :%s",
|
|
cmdname[msgtype], c, chptr->name.c_str(), text);
|
|
}
|
|
|
|
static void
|
|
expire_tgchange(void *unused)
|
|
{
|
|
tgchange::tgchange *target;
|
|
rb_dlink_node *ptr, *next_ptr;
|
|
|
|
RB_DLINK_FOREACH_SAFE(ptr, next_ptr, tgchange_list.head)
|
|
{
|
|
target = (tgchange::tgchange *)ptr->data;
|
|
|
|
if(target->expiry < rb_current_time())
|
|
{
|
|
rb_dlinkDelete(ptr, &tgchange_list);
|
|
rb_patricia_remove(tgchange_tree, target->pnode);
|
|
rb_free(target->ip);
|
|
rb_free(target);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* msg_client
|
|
*
|
|
* inputs - flag 0 if PRIVMSG 1 if NOTICE. RFC
|
|
* say NOTICE must not auto reply
|
|
* - pointer to &source source (client::client *)
|
|
* - pointer to target_p target (client::client *)
|
|
* - pointer to text
|
|
* output - NONE
|
|
* side effects - message given channel either chanop or voice
|
|
*/
|
|
static void
|
|
msg_client(enum message_type msgtype,
|
|
client::client &source, client::client *target_p, const char *text)
|
|
{
|
|
int do_floodcount = 0;
|
|
hook_data_privmsg_user hdata;
|
|
|
|
if(my(source))
|
|
{
|
|
/*
|
|
* XXX: Controversial? Allow target users to send replies
|
|
* through a +g. Rationale is that people can presently use +g
|
|
* as a way to taunt users, e.g. harass them and hide behind +g
|
|
* as a way of griefing. --nenolod
|
|
*/
|
|
if(msgtype != MESSAGE_TYPE_NOTICE &&
|
|
(is(source, umode::CALLERID) ||
|
|
(is(source, umode::REGONLYMSG) && suser(user(*target_p)).empty())) &&
|
|
!accept_message(target_p, &source) &&
|
|
!is(*target_p, umode::OPER))
|
|
{
|
|
if(rb_dlink_list_length(&source.localClient->allow_list) <
|
|
(unsigned long)ConfigFileEntry.max_accept)
|
|
{
|
|
rb_dlinkAddAlloc(target_p, &source.localClient->allow_list);
|
|
rb_dlinkAddAlloc(&source, &target_p->on_allow_list);
|
|
}
|
|
else
|
|
{
|
|
sendto_one_numeric(&source, ERR_OWNMODE,
|
|
form_str(ERR_OWNMODE),
|
|
target_p->name, "+g");
|
|
return;
|
|
}
|
|
}
|
|
|
|
/* reset idle time for message only if its not to self
|
|
* and its not a notice */
|
|
if(msgtype != MESSAGE_TYPE_NOTICE)
|
|
source.localClient->last = rb_current_time();
|
|
|
|
/* auto cprivmsg/cnotice */
|
|
do_floodcount = !is(source, umode::OPER) &&
|
|
!tgchange::find_allowing_channel(source, *target_p);
|
|
|
|
/* target change stuff, dont limit ctcp replies as that
|
|
* would allow people to start filling up random users
|
|
* targets just by ctcping them
|
|
*/
|
|
if((msgtype != MESSAGE_TYPE_NOTICE || *text != '\001') &&
|
|
ConfigFileEntry.target_change && do_floodcount)
|
|
{
|
|
if(!tgchange::add_target(source, *target_p))
|
|
{
|
|
sendto_one(&source, form_str(ERR_TARGCHANGE),
|
|
me.name, source.name, target_p->name);
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (do_floodcount && msgtype == MESSAGE_TYPE_NOTICE && *text == '\001' &&
|
|
target_p->large_ctcp_sent + LARGE_CTCP_TIME >= rb_current_time())
|
|
do_floodcount = 0;
|
|
|
|
if (do_floodcount &&
|
|
flood_attack_client(msgtype, source, target_p))
|
|
return;
|
|
}
|
|
else if(source.from == target_p->from)
|
|
{
|
|
sendto_realops_snomask(sno::DEBUG, L_ALL,
|
|
"Send message to %s[%s] dropped from %s(Fake Dir)",
|
|
target_p->name, target_p->from->name, source.name);
|
|
return;
|
|
}
|
|
|
|
if(my_connect(source) && (msgtype != MESSAGE_TYPE_NOTICE) && target_p->user && away(user(*target_p)).size())
|
|
sendto_one_numeric(&source, RPL_AWAY, form_str(RPL_AWAY),
|
|
target_p->name, away(user(*target_p)).c_str());
|
|
|
|
if(my(*target_p))
|
|
{
|
|
hdata.msgtype = msgtype;
|
|
hdata.source_p = &source;
|
|
hdata.target_p = target_p;
|
|
hdata.text = text;
|
|
hdata.approved = 0;
|
|
|
|
call_hook(h_privmsg_user, &hdata);
|
|
|
|
/* buffer location may have changed. */
|
|
text = hdata.text;
|
|
|
|
if (hdata.approved != 0)
|
|
return;
|
|
|
|
if (EmptyString(text))
|
|
{
|
|
/* could be empty after colour stripping and
|
|
* that would cause problems later */
|
|
if(msgtype != MESSAGE_TYPE_NOTICE)
|
|
sendto_one(&source, form_str(ERR_NOTEXTTOSEND), me.name, source.name);
|
|
return;
|
|
}
|
|
|
|
/* XXX Controversial? allow opers always to send through a +g */
|
|
if(!is_server(source) && (is(*target_p, umode::CALLERID) ||
|
|
(is(*target_p, umode::REGONLYMSG) && suser(user(source)).empty())))
|
|
{
|
|
/* Here is the anti-flood bot/spambot code -db */
|
|
if(accept_message(&source, target_p) || is(source, umode::OPER))
|
|
{
|
|
tgchange::add_reply_target(*target_p, source);
|
|
sendto_one(target_p, ":%s!%s@%s %s %s :%s",
|
|
source.name,
|
|
source.username,
|
|
source.host, cmdname[msgtype], target_p->name, text);
|
|
}
|
|
else if (is(*target_p, umode::REGONLYMSG) && suser(user(source)).empty())
|
|
{
|
|
if (msgtype != MESSAGE_TYPE_NOTICE)
|
|
sendto_one_numeric(&source, ERR_NONONREG,
|
|
form_str(ERR_NONONREG),
|
|
target_p->name);
|
|
}
|
|
else
|
|
{
|
|
/* check for accept, flag recipient incoming message */
|
|
if(msgtype != MESSAGE_TYPE_NOTICE)
|
|
{
|
|
sendto_one_numeric(&source, ERR_TARGUMODEG,
|
|
form_str(ERR_TARGUMODEG),
|
|
target_p->name);
|
|
}
|
|
|
|
if((target_p->localClient->last_caller_id_time +
|
|
ConfigFileEntry.caller_id_wait) < rb_current_time())
|
|
{
|
|
if(msgtype != MESSAGE_TYPE_NOTICE)
|
|
sendto_one_numeric(&source, RPL_TARGNOTIFY,
|
|
form_str(RPL_TARGNOTIFY),
|
|
target_p->name);
|
|
|
|
tgchange::add_reply_target(*target_p, source);
|
|
sendto_one(target_p, form_str(RPL_UMODEGMSG),
|
|
me.name, target_p->name, source.name,
|
|
source.username, source.host);
|
|
|
|
target_p->localClient->last_caller_id_time = rb_current_time();
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
tgchange::add_reply_target(*target_p, source);
|
|
sendto_anywhere(target_p, &source, cmdname[msgtype], ":%s", text);
|
|
}
|
|
}
|
|
else
|
|
sendto_anywhere(target_p, &source, cmdname[msgtype], ":%s", text);
|
|
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* flood_attack_client
|
|
* inputs - flag 0 if PRIVMSG 1 if NOTICE. RFC
|
|
* says NOTICE must not auto reply
|
|
* - pointer to source Client
|
|
* - pointer to target Client
|
|
* output - true if target is under flood attack
|
|
* side effects - check for flood attack on target target_p
|
|
*/
|
|
static bool
|
|
flood_attack_client(enum message_type msgtype, client::client &source, client::client *target_p)
|
|
{
|
|
int delta;
|
|
|
|
/* Services could get many messages legitimately and
|
|
* can be messaged without rate limiting via aliases
|
|
* and msg user@server.
|
|
* -- jilles
|
|
*/
|
|
if(GlobalSetOptions.floodcount && is_client(source) && &source != target_p && !is(*target_p, umode::SERVICE))
|
|
{
|
|
if((target_p->first_received_message_time + 1) < rb_current_time())
|
|
{
|
|
delta = rb_current_time() - target_p->first_received_message_time;
|
|
target_p->received_number_of_privmsgs -= delta;
|
|
target_p->first_received_message_time = rb_current_time();
|
|
if(target_p->received_number_of_privmsgs <= 0)
|
|
{
|
|
target_p->received_number_of_privmsgs = 0;
|
|
target_p->flood_noticed = 0;
|
|
}
|
|
}
|
|
|
|
if((target_p->received_number_of_privmsgs >=
|
|
GlobalSetOptions.floodcount) || target_p->flood_noticed)
|
|
{
|
|
if(target_p->flood_noticed == 0)
|
|
{
|
|
sendto_realops_snomask(sno::BOTS, L_NETWIDE,
|
|
"Possible Flooder %s[%s@%s] on %s target: %s",
|
|
source.name, source.username,
|
|
source.orighost,
|
|
source.servptr->name, target_p->name);
|
|
target_p->flood_noticed = 1;
|
|
/* add a bit of penalty */
|
|
target_p->received_number_of_privmsgs += 2;
|
|
}
|
|
if(my(source) && (msgtype != MESSAGE_TYPE_NOTICE))
|
|
sendto_one(&source,
|
|
":%s NOTICE %s :*** Message to %s throttled due to flooding",
|
|
me.name, source.name, target_p->name);
|
|
return true;
|
|
}
|
|
else
|
|
target_p->received_number_of_privmsgs++;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/*
|
|
* handle_special
|
|
*
|
|
* inputs - server pointer
|
|
* - client pointer
|
|
* - nick stuff to grok for opers
|
|
* - text to send if grok
|
|
* output - none
|
|
* side effects - all the traditional oper type messages are parsed here.
|
|
* i.e. "/msg #some.host."
|
|
* However, syntax has been changed.
|
|
* previous syntax "/msg #some.host.mask"
|
|
* now becomes "/msg $#some.host.mask"
|
|
* previous syntax of: "/msg $some.server.mask" remains
|
|
* This disambiguates the syntax.
|
|
*/
|
|
static void
|
|
handle_special(enum message_type msgtype, client::client &client,
|
|
client::client &source, const char *nick, const char *text)
|
|
{
|
|
client::client *target_p;
|
|
char *server;
|
|
char *s;
|
|
|
|
/* user[%host]@server addressed?
|
|
* NOTE: users can send to user@server, but not user%host@server
|
|
* or opers@server
|
|
*/
|
|
if((server = (char *)strchr(nick, '@')) != NULL)
|
|
{
|
|
if((target_p = find_server(&source, server + 1)) == NULL)
|
|
{
|
|
sendto_one_numeric(&source, ERR_NOSUCHSERVER,
|
|
form_str(ERR_NOSUCHSERVER), server + 1);
|
|
return;
|
|
}
|
|
|
|
if(!is(source, umode::OPER))
|
|
{
|
|
if(strchr(nick, '%') || (strncmp(nick, "opers", 5) == 0))
|
|
{
|
|
sendto_one_numeric(&source, ERR_NOSUCHNICK,
|
|
form_str(ERR_NOSUCHNICK), nick);
|
|
return;
|
|
}
|
|
}
|
|
|
|
/* somewhere else.. */
|
|
if(!is_me(*target_p))
|
|
{
|
|
sendto_one(target_p, ":%s %s %s :%s",
|
|
get_id(&source, target_p), cmdname[msgtype], nick, text);
|
|
return;
|
|
}
|
|
|
|
/* Check if someones msg'ing opers@our.server */
|
|
if(strncmp(nick, "opers@", 6) == 0)
|
|
{
|
|
sendto_realops_snomask(sno::GENERAL, L_ALL, "To opers: From: %s: %s",
|
|
source.name, text);
|
|
return;
|
|
}
|
|
|
|
/* This was not very useful except for bypassing certain
|
|
* restrictions. Note that we still allow sending to
|
|
* remote servers this way, for messaging pseudoservers
|
|
* securely whether they have a service{} block or not.
|
|
* -- jilles
|
|
*/
|
|
sendto_one_numeric(&source, ERR_NOSUCHNICK,
|
|
form_str(ERR_NOSUCHNICK), nick);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* the following two cases allow masks in NOTICEs
|
|
* (for OPERs only)
|
|
*
|
|
* Armin, 8Jun90 (gruner@informatik.tu-muenchen.de)
|
|
*/
|
|
if(is(source, umode::OPER) && *nick == '$')
|
|
{
|
|
if((*(nick + 1) == '$' || *(nick + 1) == '#'))
|
|
nick++;
|
|
else if(my_oper(source))
|
|
{
|
|
sendto_one(&source,
|
|
":%s NOTICE %s :The command %s %s is no longer supported, please use $%s",
|
|
me.name, source.name, cmdname[msgtype], nick, nick);
|
|
return;
|
|
}
|
|
|
|
if(my(source) && !IsOperMassNotice(&source))
|
|
{
|
|
sendto_one(&source, form_str(ERR_NOPRIVS),
|
|
me.name, source.name, "mass_notice");
|
|
return;
|
|
}
|
|
|
|
if((s = (char *)strrchr(nick, '.')) == NULL)
|
|
{
|
|
sendto_one_numeric(&source, ERR_NOTOPLEVEL,
|
|
form_str(ERR_NOTOPLEVEL), nick);
|
|
return;
|
|
}
|
|
while(*++s)
|
|
if(*s == '.' || *s == '*' || *s == '?')
|
|
break;
|
|
if(*s == '*' || *s == '?')
|
|
{
|
|
sendto_one_numeric(&source, ERR_WILDTOPLEVEL,
|
|
form_str(ERR_WILDTOPLEVEL), nick);
|
|
return;
|
|
}
|
|
|
|
sendto_match_butone(is_server(client) ? &client : NULL, &source,
|
|
nick + 1,
|
|
(*nick == '#') ? MATCH_HOST : MATCH_SERVER,
|
|
"%s $%s :%s", cmdname[msgtype], nick, text);
|
|
if (msgtype != MESSAGE_TYPE_NOTICE && *text == '\001')
|
|
source.large_ctcp_sent = rb_current_time();
|
|
return;
|
|
}
|
|
}
|