trunk/modules/m_encap.c

/*
 *  ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
 *
 *  Copyright (c) 2003-2014 ircd-hybrid development team
 *
 *  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 2 of the License, 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307
 *  USA
 */

/*! \file m_encap.c
 * \brief Includes required functions for processing the ENCAP command.
 * \version $Id$
 */

#include "stdinc.h"
#include "client.h"
#include "parse.h"
#include "s_serv.h"
#include "send.h"
#include "modules.h"
#include "irc_string.h"


/*
 * ms_encap()
 *
 * inputs       - destination server, subcommand, parameters
 * output       - none
 * side effects - propagates subcommand to locally connected servers
 */
static int
ms_encap(struct Client *client_p, struct Client *source_p,
         int parc, char *parv[])
{
  char buffer[IRCD_BUFSIZE], *ptr = buffer;
  unsigned int cur_len = 0, len, i;
#ifdef NOT_USED_YET
  int paramcount, mpara = 0;
#endif
  struct Message *mptr = NULL;
  MessageHandler handler = 0;

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

    if ((cur_len + len) >= sizeof(buffer))
      return 0;

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

  /*
   * If the final parameter crosses our buffer size, should we bail, 
   * like the rest, or should we truncate?  ratbox seems to think truncate,
   * so i'll do that for now until i can talk to lee.  -bill
   */
  if (parc == 3)
    snprintf(ptr, sizeof(buffer) - cur_len, "%s", parv[2]);
  else
    snprintf(ptr, sizeof(buffer) - cur_len, ":%s", parv[parc - 1]);

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

  if (match(parv[1], me.name))
    return 0;

  if ((mptr = find_command(parv[2])) == NULL)
    return 0;

#ifdef NOT_USED_YET
  paramcount = mptr->parameters;
  mpara      = mptr->maxpara;
#endif
  mptr->bytes += strlen(buffer);

  /*
   * Yes this is an ugly hack, but it is quicker than copying the
   * entire array again.
   *
   * Note: this hack wouldn't be needed if parv[0] were set to the
   * command name, rather than being derived from the prefix, as
   * it should have been from the beginning.
   */
  ptr = parv[0];
  parv += 2;
  parc -= 2;
  parv[0] = ptr;

  if ((handler = mptr->handlers[ENCAP_HANDLER]))
    (*handler)(client_p, source_p, parc, parv);
  return 0;
}

static struct Message encap_msgtab =
{
  "ENCAP", 0, 0, 3, MAXPARA, MFLG_SLOW, 0,
  { m_ignore, m_ignore, ms_encap, m_ignore, m_ignore, m_ignore }
};

static void
module_init(void)
{
  mod_add_cmd(&encap_msgtab);
  add_capability("ENCAP", CAP_ENCAP, 1);
}

static void
module_exit(void)
{
  mod_del_cmd(&encap_msgtab);
  delete_capability("ENCAP");
}

struct module module_entry =
{
  .node    = { NULL, NULL, NULL },
  .name    = NULL,
  .version = "$Revision$",
  .handle  = NULL,
  .modinit = module_init,
  .modexit = module_exit,
  .flags   = 0
};
Revision:	2885
Committed:	Mon Jan 20 22:50:36 2014 UTC (11 years, 7 months ago) by michael
Content type:	text/x-csrc
File size:	3551 byte(s)
Log Message:	- m_encap.c:ms_encap(): removed pointless code. Buffer can't be overflown since snprintf() is being used
#	User	Rev	Content
1	adx	30	/*
2	michael	2816	* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
3	adx	30	*
4	michael	2816	* Copyright (c) 2003-2014 ircd-hybrid development team
5	adx	30	*
6			* This program is free software; you can redistribute it and/or modify
7			* it under the terms of the GNU General Public License as published by
8			* the Free Software Foundation; either version 2 of the License, or
9			* (at your option) any later version.
10			*
11			* This program is distributed in the hope that it will be useful,
12			* but WITHOUT ANY WARRANTY; without even the implied warranty of
13			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14			* GNU General Public License for more details.
15			*
16			* You should have received a copy of the GNU General Public License
17			* along with this program; if not, write to the Free Software
18			* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
19			* USA
20			*/
21
22	michael	2816	/*! \file m_encap.c
23			* \brief Includes required functions for processing the ENCAP command.
24			* \version $Id$
25			*/
26
27	adx	30	#include "stdinc.h"
28			#include "client.h"
29			#include "parse.h"
30			#include "s_serv.h"
31			#include "send.h"
32			#include "modules.h"
33			#include "irc_string.h"
34
35
36			/*
37			* ms_encap()
38			*
39			* inputs - destination server, subcommand, parameters
40			* output - none
41			* side effects - propagates subcommand to locally connected servers
42			*/
43	michael	2820	static int
44	adx	30	ms_encap(struct Client client_p, struct Client source_p,
45			int parc, char *parv[])
46			{
47			char buffer[IRCD_BUFSIZE], *ptr = buffer;
48			unsigned int cur_len = 0, len, i;
49	michael	1321	#ifdef NOT_USED_YET
50	adx	30	int paramcount, mpara = 0;
51	michael	1321	#endif
52	adx	30	struct Message *mptr = NULL;
53			MessageHandler handler = 0;
54
55			for (i = 1; i < (unsigned int)parc - 1; i++)
56			{
57			len = strlen(parv[i]) + 1;
58
59			if ((cur_len + len) >= sizeof(buffer))
60	michael	2820	return 0;
61	adx	30
62	michael	1233	snprintf(ptr, sizeof(buffer) - cur_len, "%s ", parv[i]);
63	adx	30	cur_len += len;
64			ptr += len;
65			}
66
67			/*
68	michael	2820	* If the final parameter crosses our buffer size, should we bail,
69	adx	30	* like the rest, or should we truncate? ratbox seems to think truncate,
70			* so i'll do that for now until i can talk to lee. -bill
71			*/
72			if (parc == 3)
73	michael	1233	snprintf(ptr, sizeof(buffer) - cur_len, "%s", parv[2]);
74	adx	30	else
75	michael	1233	snprintf(ptr, sizeof(buffer) - cur_len, ":%s", parv[parc - 1]);
76	adx	30
77			sendto_match_servs(source_p, parv[1], CAP_ENCAP,
78			"ENCAP %s", buffer);
79
80	michael	1652	if (match(parv[1], me.name))
81	michael	2820	return 0;
82	adx	30
83			if ((mptr = find_command(parv[2])) == NULL)
84	michael	2820	return 0;
85	adx	30
86	michael	1178	#ifdef NOT_USED_YET
87	adx	30	paramcount = mptr->parameters;
88			mpara = mptr->maxpara;
89	michael	1178	#endif
90	adx	30	mptr->bytes += strlen(buffer);
91
92			/*
93	michael	2816	* Yes this is an ugly hack, but it is quicker than copying the
94			* entire array again.
95			*
96			* Note: this hack wouldn't be needed if parv[0] were set to the
97			* command name, rather than being derived from the prefix, as
98			* it should have been from the beginning.
99	adx	30	*/
100			ptr = parv[0];
101			parv += 2;
102			parc -= 2;
103			parv[0] = ptr;
104
105	michael	1233	if ((handler = mptr->handlers[ENCAP_HANDLER]))
106			(*handler)(client_p, source_p, parc, parv);
107	michael	2820	return 0;
108	adx	30	}
109	michael	1230
110	michael	2816	static struct Message encap_msgtab =
111			{
112	michael	1230	"ENCAP", 0, 0, 3, MAXPARA, MFLG_SLOW, 0,
113	michael	2816	{ m_ignore, m_ignore, ms_encap, m_ignore, m_ignore, m_ignore }
114	michael	1230	};
115
116			static void
117			module_init(void)
118			{
119			mod_add_cmd(&encap_msgtab);
120			add_capability("ENCAP", CAP_ENCAP, 1);
121			}
122
123			static void
124			module_exit(void)
125			{
126			mod_del_cmd(&encap_msgtab);
127			delete_capability("ENCAP");
128			}
129
130	michael	2816	struct module module_entry =
131			{
132	michael	1230	.node = { NULL, NULL, NULL },
133			.name = NULL,
134			.version = "$Revision$",
135			.handle = NULL,
136			.modinit = module_init,
137			.modexit = module_exit,
138			.flags = 0
139			};