146 lines
5.1 KiB
C
146 lines
5.1 KiB
C
/*
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* ircd-ratbox: A slightly useful ircd.
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* msg.h: A header for the message handler structure.
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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) 2002-2004 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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#ifndef INCLUDED_msg_h
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#define INCLUDED_msg_h
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#include "defaults.h"
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#include "msgbuf.h"
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struct Client;
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/* MessageHandler */
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typedef enum HandlerType
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{
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UNREGISTERED_HANDLER,
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CLIENT_HANDLER,
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RCLIENT_HANDLER,
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SERVER_HANDLER,
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ENCAP_HANDLER,
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OPER_HANDLER,
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LAST_HANDLER_TYPE
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}
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HandlerType;
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/* struct MsgBuf* msgbuf_p - message buffer (including tags)
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* struct Client* client_p - connection message originated from
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* struct Client* source_p - source of message, may be different from client_p
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* int parc - parameter count (from msgbuf_p)
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* char* parv[] - parameter vector (from msgbuf_p)
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*/
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typedef void (*MessageHandler) (struct MsgBuf *, struct Client *, struct Client *, int, const char *[]);
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struct MessageEntry
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{
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MessageHandler handler;
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size_t min_para;
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};
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/* Message table structure */
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struct Message
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{
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const char *cmd;
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unsigned int count; /* number of times command used */
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unsigned int rcount; /* number of times command used by server */
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unsigned long bytes; /* bytes received for this message */
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unsigned int flags;
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/* handlers:
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* UNREGISTERED, CLIENT, RCLIENT, SERVER, ENCAP, OPER
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*/
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struct MessageEntry handlers[LAST_HANDLER_TYPE];
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};
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/* generic handlers */
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extern void m_ignore(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
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extern void m_not_oper(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
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extern void m_registered(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
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extern void m_unregistered(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
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#define mg_ignore { m_ignore, 0 }
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#define mg_not_oper { m_not_oper, 0 }
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#define mg_reg { m_registered, 0 }
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#define mg_unreg { m_unregistered, 0 }
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/*
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* m_functions execute protocol messages on this server:
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* void m_func(struct MsgBuf *, struct Client* client_p, struct Client* source_p, int parc, char* parv[]);
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*
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* client_p is always NON-NULL, pointing to a *LOCAL* client
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* structure (with an open socket connected!). This
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* identifies the physical socket where the message
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* originated (or which caused the m_function to be
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* executed--some m_functions may call others...).
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*
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* source_p is the source of the message, defined by the
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* prefix part of the message if present. If not
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* or prefix not found, then source_p==client_p.
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*
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* (!IsServer(client_p)) => (client_p == source_p), because
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* prefixes are taken *only* from servers...
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*
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* (IsServer(client_p))
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* (source_p == client_p) => the message didn't
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* have the prefix.
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*
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* (source_p != client_p && IsServer(source_p) means
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* the prefix specified servername. (?)
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*
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* (source_p != client_p && !IsServer(source_p) means
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* that message originated from a remote
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* user (not local).
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*
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*
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* combining
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*
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* (!IsServer(source_p)) means that, source_p can safely
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* taken as defining the target structure of the
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* message in this server.
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*
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* *Always* true (if 'parse' and others are working correct):
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*
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* 1) source_p->from == client_p (note: client_p->from == client_p)
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*
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* 2) MyConnect(source_p) <=> source_p == client_p (e.g. source_p
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* *cannot* be a local connection, unless it's
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* actually client_p!). [MyConnect(x) should probably
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* be defined as (x == x->from) --msa ]
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*
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* parc number of variable parameter strings (if zero,
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* parv is allowed to be NULL)
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*
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* parv a NULL terminated list of parameter pointers,
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*
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* parv[0], unused for historical reasons (formerly
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* sender name)
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* parv[1]...parv[parc-1]
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* pointers to additional parameters
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* parv[parc] == NULL, *always*
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*
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* note: it is guaranteed that parv[1]..parv[parc-1] are all
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* non-NULL pointers.
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*/
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#endif /* INCLUDED_msg_h */
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