modules/m_encap.c

   1 /*  modules/m_encap.c
   2  *  Copyright (C) 2003-2005 ircd-ratbox development team
   3  *  Copyright (C) 2003 Lee Hardy <lee@leeh.co.uk>
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions are
   7  * met:
   8  *
   9  * 1.Redistributions of source code must retain the above copyright notice,
  10  *   this list of conditions and the following disclaimer.
  11  * 2.Redistributions in binary form must reproduce the above copyright
  12  *   notice, this list of conditions and the following disclaimer in the
  13  *   documentation and/or other materials provided with the distribution.
  14  * 3.The name of the author may not be used to endorse or promote products
  15  *   derived from this software without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  20  * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
  21  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  22  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  23  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  25  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  26  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  27  * POSSIBILITY OF SUCH DAMAGE.
  28  *
  29  * $Id: m_encap.c 254 2005-09-21 23:35:12Z nenolod $
  30  */
  31
  32 #include "stdinc.h"
  33 #include "send.h"
  34 #include "channel.h"
  35 #include "client.h"
  36 #include "common.h"
  37 #include "config.h"
  38 #include "ircd.h"
  39 #include "numeric.h"
  40 #include "s_serv.h"
  41 #include "hash.h"
  42 #include "msg.h"
  43 #include "parse.h"
  44 #include "modules.h"
  45 #include "sprintf_irc.h"
  46
  47 static int ms_encap(struct Client *client_p, struct Client *source_p,
  48                      int parc, const char *parv[]);
  49
  50 struct Message encap_msgtab = {
  51         "ENCAP", 0, 0, 0, MFLG_SLOW,
  52         {mg_ignore, mg_ignore, {ms_encap, 3}, {ms_encap, 3}, mg_ignore, mg_ignore}
  53 };
  54
  55 mapi_clist_av1 encap_clist[] = { &encap_msgtab, NULL };
  56 DECLARE_MODULE_AV1(encap, NULL, NULL, encap_clist, NULL, NULL, "$Revision: 254 $");
  57
  58 /* ms_encap()
  59  *
  60  * parv[1] - destination server
  61  * parv[2] - subcommand
  62  * parv[3] - parameters
  63  */
  64 static int
  65 ms_encap(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
  66 {
  67         char buffer[BUFSIZE];
  68         char *ptr;
  69         int cur_len = 0;
  70         int len;
  71         int i;
  72
  73         ptr = buffer;
  74
  75         for(i = 1; i < parc - 1; i++)
  76         {
  77                 len = strlen(parv[i]) + 1;
  78
  79                 /* ugh, not even at the last parameter, just bail --fl */
  80                 if((size_t)(cur_len + len) >= sizeof(buffer))
  81                         return 0;
  82
  83                 rb_snprintf(ptr, sizeof(buffer) - cur_len, "%s ", parv[i]);
  84                 cur_len += len;
  85                 ptr += len;
  86         }
  87
  88         len = strlen(parv[i]);
  89
  90         /* if its a command without parameters, dont prepend a ':' */
  91         if(parc == 3)
  92                 rb_snprintf(ptr, sizeof(buffer) - cur_len, "%s", parv[2]);
  93         else
  94                 rb_snprintf(ptr, sizeof(buffer) - cur_len, ":%s", parv[parc-1]);
  95
  96         /* add a trailing \0 if it was too long */
  97         if((cur_len + len) >= BUFSIZE)
  98                 buffer[BUFSIZE-1] = '\0';
  99
 100         sendto_match_servs(source_p, parv[1], CAP_ENCAP, NOCAPS,
 101                            "ENCAP %s", buffer);
 102
 103         /* if it matches us, find a matching handler and call it */
 104         if(match(parv[1], me.name))
 105                 handle_encap(client_p, source_p, parv[2], parc - 2, parv + 2);
 106
 107         return 0;
 108 }
 109
 110