/*  modules/m_encap.c
 *  Copyright (C) 2003-2005 ircd-ratbox development team
 *  Copyright (C) 2003 Lee Hardy <lee@leeh.co.uk>
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 * 1.Redistributions of source code must retain the above copyright notice,
 *   this list of conditions and the following disclaimer.
 * 2.Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 * 3.The name of the author may not be used to endorse or promote products
 *   derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 */

#include "stdinc.h"
#include "send.h"
#include "channel.h"
#include "client.h"
#include "common.h"
#include "config.h"
#include "ircd.h"
#include "numeric.h"
#include "s_serv.h"
#include "hash.h"
#include "msg.h"
#include "parse.h"
#include "modules.h"

static int ms_encap(struct Client *client_p, struct Client *source_p,
                    int parc, const char *parv[]);

struct Message encap_msgtab = {
    "ENCAP", 0, 0, 0, MFLG_SLOW,
    {mg_ignore, mg_ignore, {ms_encap, 3}, {ms_encap, 3}, mg_ignore, mg_ignore}
};

mapi_clist_av1 encap_clist[] = { &encap_msgtab, NULL };
DECLARE_MODULE_AV1(encap, NULL, NULL, encap_clist, NULL, NULL, "$Revision: 254 $");

/* ms_encap()
 *
 * parv[1] - destination server
 * parv[2] - subcommand
 * parv[3] - parameters
 */
static int
ms_encap(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
    char buffer[BUFSIZE];
    char *ptr;
    int cur_len = 0;
    int len;
    int i;

    ptr = buffer;

    for(i = 1; i < parc - 1; i++) {
        len = strlen(parv[i]) + 1;

        /* ugh, not even at the last parameter, just bail --fl */
        if((size_t)(cur_len + len) >= sizeof(buffer))
            return 0;

        snprintf(ptr, sizeof(buffer) - cur_len, "%s ", parv[i]);
        cur_len += len;
        ptr += len;
    }

    len = strlen(parv[i]);

    /* if its a command without parameters, dont prepend a ':' */
    if(parc == 3)
        snprintf(ptr, sizeof(buffer) - cur_len, "%s", parv[2]);
    else
        snprintf(ptr, sizeof(buffer) - cur_len, ":%s", parv[parc-1]);

    /* add a trailing \0 if it was too long */
    if((cur_len + len) >= BUFSIZE)
        buffer[BUFSIZE-1] = '\0';

    sendto_match_servs(source_p, parv[1], CAP_ENCAP, NOCAPS,
                       "ENCAP %s", buffer);

    /* if it matches us, find a matching handler and call it */
    if(match(parv[1], me.name))
        handle_encap(client_p, source_p, parv[2], parc - 2, parv + 2);

    return 0;
}