s_numeric.c

/************************************************************************
 *   IRC - Internet Relay Chat, src/s_numeric.c
 *   Copyright (C) 1990 Jarkko Oikarinen
 *
 *   Numerous fixes by Markku Savela
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 1, or (at your option)
 *   any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program; if not, write to the Free Software
 *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include "struct.h"
#include "common.h"
#include "sys.h"
#include "numeric.h"
#include "channel.h"
#include "h.h"

static char buffer[1024];

/*
 * * DoNumeric (replacement for the old do_numeric) *
 * 
 * parc         number of arguments ('sender' counted as one!)
 * parv[0]      pointer to 'sender' (may point to empty string)
 * parv[1]..parv[parc-1] 
 *              pointers to additional parameters, this is a NULL 
 *              terminated list (parv[parc] == NULL).
 * 
 * *WARNING* 
 * Numerics are mostly error reports. If there is something 
 * wrong with the message, just *DROP* it! Don't even think of 
 * sending back a neat error message -- big danger of creating 
 * a ping pong error message...
 */
int do_numeric(int numeric, aClient *cptr, aClient *sptr, int parc, 
	       char *parv[])
{
    aClient    *acptr;
    aChannel   *chptr;
    char       *nick, *p;
    int         i;

    if (parc < 1 || !IsServer(sptr))
	return 0;
    /* Remap low number numerics. */
    if (numeric < 100)
	numeric += 100;
    /*
     * Prepare the parameter portion of the message into 'buffer'. 
     * (Because the buffer is twice as large as the message buffer for
     * the socket, no overflow can occur here... ...on current
     * assumptions--bets are off, if these are changed --msa) 
     * Note: if buffer is non-empty, it will begin with SPACE.
     */
    buffer[0] = '\0';
    if (parc > 1)
    {
	int bpos = 0;
	char *p;

	for (i = 2; i < (parc - 1); i++)
	{
	    buffer[bpos++] = ' ';
	    for(p = parv[i]; *p; p++)
		buffer[bpos++] = *p;
	}
	buffer[bpos++] = ' ';
	buffer[bpos++] = ':';
	for(p = parv[parc - 1]; *p; p++)
	    buffer[bpos++] = *p;
	buffer[bpos] = '\0';
    }
    for (; (nick = strtoken(&p, parv[1], ",")); parv[1] = NULL)
    {
	if ((acptr = find_client(nick, (aClient *) NULL)))
	{
	    int dohide;

	    /*
	     * Drop to bit bucket if for me... ...one might consider
	     * sendto_ops * here... --msa * And so it was done. -avalon *
	     * And regretted. Dont do it that way. Make sure * it goes
	     * only to non-servers. -avalon * Check added to make sure
	     * servers don't try to loop * with numerics which can happen
	     * with nick collisions. * - Avalon
	     */

#ifdef HIDE_NUMERIC_SOURCE
	    dohide = MyClient(acptr) ? 1 : 0;
#else
	    dohide = 0;
#endif

	    if (!IsMe(acptr) && IsPerson(acptr))
		sendto_prefix_one(acptr, dohide ? &me : sptr, ":%s %d %s%s",
				  dohide ? me.name : parv[0], numeric, nick, buffer);
	    else if (IsServer(acptr) && acptr->from != cptr)
		sendto_prefix_one(acptr, sptr, ":%s %d %s%s",
				  parv[0], numeric, nick, buffer);
	}
	else if ((chptr = find_channel(nick, (aChannel *) NULL)))
	{
	    int dohide;

#ifdef HIDE_NUMERIC_SOURCE
	    dohide = 1;
#else
	    dohide = 0;
#endif
	    sendto_channel_butserv(chptr, dohide ? &me : sptr, ":%s %d %s%s",
				   dohide ? me.name : parv[0], numeric, 
				   chptr->chname, buffer);

	    sendto_channel_remote_butone(cptr, sptr, chptr, 
					 parv[0], numeric, 
					 chptr->chname, buffer);

	}
    }
    return 0;
}