trunk/modules/m_encap.c

/*
 *  ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
 *
 *  Copyright (c) 2003-2020 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
 *  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 "server_capab.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 void
ms_encap(struct Client *source_p, int parc, char *parv[])
{
  char buf[IRCD_BUFSIZE];
  char *bufptr = buf;
  unsigned int cur_len = 0, len;

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

    /* Drop the whole command if this parameter would be truncated */
    if ((cur_len + len) >= sizeof(buf))
      return;

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

  /* If it's a command without parameters, don't prepend a ':' */
  if (parc == 3)
    snprintf(bufptr, sizeof(buf) - cur_len, "%s", parv[2]);
  else
    snprintf(bufptr, sizeof(buf) - cur_len, ":%s", parv[parc - 1]);

  sendto_match_servs(source_p, parv[1], CAPAB_ENCAP, "ENCAP %s", buf);

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

  struct Message *message = find_command(parv[2]);
  if (message == NULL)
    return;

  const struct MessageHandler *const handler = &message->handlers[ENCAP_HANDLER];
  message->bytes += strlen(buf);
  message->ecount++;

  parv += 2;
  parc -= 2;

  if (handler->args_min &&
      (((unsigned int)parc < handler->args_min) ||
       (handler->empty_last_arg != true && EmptyString(parv[handler->args_min - 1]))))
    return;

  handler->handler(source_p, parc, parv);
}

static struct Message encap_msgtab =
{
  .cmd = "ENCAP",
  .handlers[UNREGISTERED_HANDLER] = { .handler = m_ignore },
  .handlers[CLIENT_HANDLER] = { .handler = m_ignore },
  .handlers[SERVER_HANDLER] = { .handler = ms_encap, .args_min = 3 },
  .handlers[ENCAP_HANDLER] = { .handler = m_ignore },
  .handlers[OPER_HANDLER] = { .handler = m_ignore }
};

static void
module_init(void)
{
  mod_add_cmd(&encap_msgtab);
  capab_add("ENCAP", CAPAB_ENCAP);
}

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

struct module module_entry =
{
  .version = "$Revision$",
  .modinit = module_init,
  .modexit = module_exit,
};
Revision:	9762
Committed:	Mon Nov 30 18:02:23 2020 UTC (5 years, 7 months ago) by michael
Content type:	text/x-csrc
File size:	3273 byte(s)
Log Message:	- Stylistical changes
#	User	Rev	Content
1	adx	30	/*
2	michael	2816	* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
3	adx	30	*
4	michael	9101	* Copyright (c) 2003-2020 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	michael	4565	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
19	adx	30	* 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	michael	8166	#include "server_capab.h"
31	adx	30	#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	9077	static void
44	michael	3156	ms_encap(struct Client source_p, int parc, char parv[])
45	adx	30	{
46	michael	9762	char buf[IRCD_BUFSIZE];
47			char *bufptr = buf;
48	michael	9374	unsigned int cur_len = 0, len;
49	adx	30
50	michael	9374	for (unsigned int i = 1; i < (unsigned int)parc - 1; ++i)
51	adx	30	{
52	michael	8260	len = strlen(parv[i]) + 1; /* +1 for the space */
53	adx	30
54	michael	8260	/* Drop the whole command if this parameter would be truncated */
55	michael	9762	if ((cur_len + len) >= sizeof(buf))
56	michael	9077	return;
57	adx	30
58	michael	9762	snprintf(bufptr, sizeof(buf) - cur_len, "%s ", parv[i]);
59	adx	30	cur_len += len;
60	michael	9762	bufptr += len;
61	adx	30	}
62
63	michael	3037	/* If it's a command without parameters, don't prepend a ':' */
64	adx	30	if (parc == 3)
65	michael	9762	snprintf(bufptr, sizeof(buf) - cur_len, "%s", parv[2]);
66	adx	30	else
67	michael	9762	snprintf(bufptr, sizeof(buf) - cur_len, ":%s", parv[parc - 1]);
68	adx	30
69	michael	9762	sendto_match_servs(source_p, parv[1], CAPAB_ENCAP, "ENCAP %s", buf);
70	adx	30
71	michael	1652	if (match(parv[1], me.name))
72	michael	9077	return;
73	adx	30
74	michael	9374	struct Message *message = find_command(parv[2]);
75			if (message == NULL)
76	michael	9077	return;
77	adx	30
78	michael	9374	const struct MessageHandler *const handler = &message->handlers[ENCAP_HANDLER];
79	michael	9762	message->bytes += strlen(buf);
80	michael	9378	message->ecount++;
81
82	adx	30	parv += 2;
83			parc -= 2;
84
85	michael	9374	if (handler->args_min &&
86			(((unsigned int)parc < handler->args_min) \|\|
87			(handler->empty_last_arg != true && EmptyString(parv[handler->args_min - 1]))))
88			return;
89
90			handler->handler(source_p, parc, parv);
91	adx	30	}
92	michael	1230
93	michael	2816	static struct Message encap_msgtab =
94			{
95	michael	5881	.cmd = "ENCAP",
96	michael	9374	.handlers[UNREGISTERED_HANDLER] = { .handler = m_ignore },
97			.handlers[CLIENT_HANDLER] = { .handler = m_ignore },
98			.handlers[SERVER_HANDLER] = { .handler = ms_encap, .args_min = 3 },
99			.handlers[ENCAP_HANDLER] = { .handler = m_ignore },
100			.handlers[OPER_HANDLER] = { .handler = m_ignore }
101	michael	1230	};
102
103			static void
104			module_init(void)
105			{
106			mod_add_cmd(&encap_msgtab);
107	michael	8166	capab_add("ENCAP", CAPAB_ENCAP);
108	michael	1230	}
109
110			static void
111			module_exit(void)
112			{
113			mod_del_cmd(&encap_msgtab);
114	michael	8166	capab_del("ENCAP");
115	michael	1230	}
116
117	michael	2816	struct module module_entry =
118			{
119	michael	1230	.version = "$Revision$",
120			.modinit = module_init,
121			.modexit = module_exit,
122			};