ircd-hybrid/modules/m_encap.c

/*
 *  ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
 *  m_encap.c: encapsulated command propagation and parsing
 *
 *  Copyright (C) 2003 by the past and present ircd coders, and others.
 *
 *  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
 *
 *  $Id$
 */

#include "stdinc.h"
#include "handlers.h"
#include "client.h"
#include "msg.h"
#include "parse.h"
#include "s_serv.h"
#include "send.h"
#include "conf/modules.h"

static void ms_encap(struct Client *, struct Client *, int, char *[]);

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

INIT_MODULE(m_encap, "$Revision$")
{
  mod_add_cmd(&encap_msgtab);
  add_capability("ENCAP", CAP_ENCAP, 1);
}

CLEANUP_MODULE
{
  delete_capability("ENCAP");
  mod_del_cmd(&encap_msgtab);
}

/*! \brief ENCAP command handler (called for servers only)
 *
 * propagates subcommand to locally connected servers
 *
 * \param client_p Pointer to allocated Client struct with physical connection
 *                 to this server, i.e. with an open socket connected.
 * \param source_p Pointer to allocated Client struct from which the message
 *                 originally comes from.  This can be a local or remote client.
 * \param parc     Integer holding the number of supplied arguments.
 * \param parv     Argument vector where parv[0] .. parv[parc-1] are non-NULL
 *                 pointers.
 * \note Valid arguments for this command are:
 *      - parv[0] = sender prefix
 *      - parv[1] = target server
 *      - parv[2] = subcommand
 *      - parv[3] .. parv[parc-1] = parameters
 */
static void
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;
  int paramcount, mpara = 0;
  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;

    ircsprintf(ptr, "%s ", parv[i]);
    cur_len += len;
    ptr += len;
  }

  len = strlen(parv[i]);

  /*
   * 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)
    ircsprintf(ptr, "%s", parv[2]);
  else
    ircsprintf(ptr, ":%s", parv[parc-1]);

  if ((cur_len + len) >= sizeof(buffer))
    buffer[sizeof(buffer)-1] = '\0';

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

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

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

  paramcount = mptr->parameters;
  mpara      = mptr->maxpara;

  mptr->bytes += strlen(buffer);

  /*
   * yes this is an ugly hack, but it is quicker than copying the entire array again
   * note: this hack wouldnt 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]) == NULL)
    return;

  (*handler)(client_p, source_p, parc, parv);
}
Revision:	470
Committed:	Fri Feb 17 05:07:43 2006 UTC (20 years, 5 months ago) by db
Content type:	text/x-csrc
File size:	3976 byte(s)
Log Message:	- fix compile errors with moved modules.h - fix a few missing includes, msg.h and parse.h
#	User	Rev	Content
1	adx	30	/*
2			* ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
3			* m_encap.c: encapsulated command propagation and parsing
4			*
5			* Copyright (C) 2003 by the past and present ircd coders, and others.
6			*
7			* This program is free software; you can redistribute it and/or modify
8			* it under the terms of the GNU General Public License as published by
9			* the Free Software Foundation; either version 2 of the License, or
10			* (at your option) any later version.
11			*
12			* This program is distributed in the hope that it will be useful,
13			* but WITHOUT ANY WARRANTY; without even the implied warranty of
14			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15			* GNU General Public License for more details.
16			*
17			* You should have received a copy of the GNU General Public License
18			* along with this program; if not, write to the Free Software
19			* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
20			* USA
21			*
22	knight	31	* $Id$
23	adx	30	*/
24
25			#include "stdinc.h"
26			#include "handlers.h"
27			#include "client.h"
28			#include "msg.h"
29			#include "parse.h"
30			#include "s_serv.h"
31			#include "send.h"
32	db	470	#include "conf/modules.h"
33	adx	30
34			static void ms_encap(struct Client , struct Client , int, char *[]);
35
36			struct Message encap_msgtab = {
37			"ENCAP", 0, 0, 3, 0, MFLG_SLOW, 0,
38	michael	350	{ m_ignore, m_ignore, ms_encap, m_ignore, m_ignore, m_ignore }
39	adx	30	};
40
41	adx	442	INIT_MODULE(m_encap, "$Revision$")
42	adx	30	{
43			mod_add_cmd(&encap_msgtab);
44			add_capability("ENCAP", CAP_ENCAP, 1);
45			}
46
47	adx	442	CLEANUP_MODULE
48	adx	30	{
49	adx	442	delete_capability("ENCAP");
50	adx	30	mod_del_cmd(&encap_msgtab);
51			}
52
53	michael	350	/*! \brief ENCAP command handler (called for servers only)
54	adx	30	*
55	michael	350	* propagates subcommand to locally connected servers
56			*
57			* \param client_p Pointer to allocated Client struct with physical connection
58			* to this server, i.e. with an open socket connected.
59			* \param source_p Pointer to allocated Client struct from which the message
60			* originally comes from. This can be a local or remote client.
61			* \param parc Integer holding the number of supplied arguments.
62			* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL
63			* pointers.
64			* \note Valid arguments for this command are:
65			* - parv[0] = sender prefix
66			* - parv[1] = target server
67			* - parv[2] = subcommand
68			* - parv[3] .. parv[parc-1] = parameters
69	adx	30	*/
70			static void
71			ms_encap(struct Client client_p, struct Client source_p,
72			int parc, char *parv[])
73			{
74			char buffer[IRCD_BUFSIZE], *ptr = buffer;
75			unsigned int cur_len = 0, len, i;
76			int paramcount, mpara = 0;
77			struct Message *mptr = NULL;
78			MessageHandler handler = 0;
79
80			for (i = 1; i < (unsigned int)parc - 1; i++)
81			{
82			len = strlen(parv[i]) + 1;
83
84			if ((cur_len + len) >= sizeof(buffer))
85			return;
86
87			ircsprintf(ptr, "%s ", parv[i]);
88			cur_len += len;
89			ptr += len;
90			}
91
92			len = strlen(parv[i]);
93
94			/*
95			* if the final parameter crosses our buffer size, should we bail,
96			* like the rest, or should we truncate? ratbox seems to think truncate,
97			* so i'll do that for now until i can talk to lee. -bill
98			*/
99			if (parc == 3)
100			ircsprintf(ptr, "%s", parv[2]);
101			else
102			ircsprintf(ptr, ":%s", parv[parc-1]);
103
104			if ((cur_len + len) >= sizeof(buffer))
105			buffer[sizeof(buffer)-1] = '\0';
106
107			sendto_match_servs(source_p, parv[1], CAP_ENCAP,
108			"ENCAP %s", buffer);
109
110			if (!match(parv[1], me.name))
111			return;
112
113			if ((mptr = find_command(parv[2])) == NULL)
114			return;
115
116			paramcount = mptr->parameters;
117			mpara = mptr->maxpara;
118
119			mptr->bytes += strlen(buffer);
120
121			/*
122			* yes this is an ugly hack, but it is quicker than copying the entire array again
123			* note: this hack wouldnt be needed if parv[0] were set to the command name, rather
124			* than being derived from the prefix, as it should have been from the beginning.
125			*/
126			ptr = parv[0];
127			parv += 2;
128			parc -= 2;
129			parv[0] = ptr;
130
131			if ((handler = mptr->handlers[ENCAP_HANDLER]) == NULL)
132			return;
133
134			(*handler)(client_p, source_p, parc, parv);
135			}