trunk/modules/m_svsnick.c

/*
 *  ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
 *
 *  Copyright (c) 1999 Bahamut development team.
 *  Copyright (c) 2011-2016 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_svsnick.c
 * \brief Includes required functions for processing the SVSNICK command.
 * \version $Id$
 */


#include "stdinc.h"
#include "client.h"
#include "ircd.h"
#include "channel_mode.h"
#include "send.h"
#include "parse.h"
#include "modules.h"
#include "irc_string.h"
#include "user.h"
#include "hash.h"
#include "watch.h"
#include "whowas.h"


/*! \brief SVSNICK command handler
 *
 * \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] = command
 *      - parv[1] = old nickname
 *      - parv[2] = new nickname
 *      - parv[3] = timestamp
 */
static int
ms_svsnick(struct Client *source_p, int parc, char *parv[])
{
  struct Client *target_p = NULL, *exists_p = NULL;

  if (!HasFlag(source_p, FLAGS_SERVICE))
    return 0;

  if (!valid_nickname(parv[2], 1))
    return 0;

  if ((target_p = find_person(source_p, parv[1])) == NULL)
    return 0;

  if (!MyConnect(target_p))
  {
    if (target_p->from == source_p->from)
    {
      sendto_realops_flags(UMODE_DEBUG, L_ALL, SEND_NOTICE,
                           "Received wrong-direction SVSNICK "
                           "for %s (behind %s) from %s",
                           target_p->name, source_p->from->name,
                           get_client_name(source_p, HIDE_IP));
      return 0;
    }

    sendto_one(target_p, ":%s SVSNICK %s %s %s", source_p->id,
               target_p->id, parv[2], parv[3]);
    return 0;
  }

  if ((exists_p = hash_find_client(parv[2])))
  {
    if (target_p == exists_p)
    {
      if (!strcmp(target_p->name, parv[2]))
        return 0;
    }
    else if (IsUnknown(exists_p))
      exit_client(exists_p, "SVSNICK Override");
    else
    {
      exit_client(target_p, "SVSNICK Collide");
      return 0;
    }
  }

  target_p->tsinfo = strtoumax(parv[3], NULL, 10);
  clear_ban_cache_client(target_p);
  watch_check_hash(target_p, RPL_LOGOFF);

  if (HasUMode(target_p, UMODE_REGISTERED))
  {
    const unsigned int oldmodes = target_p->umodes;
    char modebuf[IRCD_BUFSIZE] = "";

    DelUMode(target_p, UMODE_REGISTERED);
    send_umode(target_p, 1, oldmodes, modebuf);
  }

  sendto_common_channels_local(target_p, 1, 0, 0, ":%s!%s@%s NICK :%s",
                               target_p->name, target_p->username,
                               target_p->host, parv[2]);

  whowas_add_history(target_p, 1);

  sendto_server(NULL, 0, 0, ":%s NICK %s :%ju",
                target_p->id, parv[2], target_p->tsinfo);
  hash_del_client(target_p);
  strlcpy(target_p->name, parv[2], sizeof(target_p->name));
  hash_add_client(target_p);

  watch_check_hash(target_p, RPL_LOGON);

  fd_note(&target_p->connection->fd, "Nick: %s", target_p->name);
  return 0;
}

static struct Message svsnick_msgtab =
{
  .cmd = "SVSNICK",
  .args_min = 4,
  .args_max = MAXPARA,
  .handlers[UNREGISTERED_HANDLER] = m_ignore,
  .handlers[CLIENT_HANDLER] = m_ignore,
  .handlers[SERVER_HANDLER] = ms_svsnick,
  .handlers[ENCAP_HANDLER] = m_ignore,
  .handlers[OPER_HANDLER] = m_ignore
};

static void
module_init(void)
{
  mod_add_cmd(&svsnick_msgtab);
}

static void
module_exit(void)
{
  mod_del_cmd(&svsnick_msgtab);
}

struct module module_entry =
{
  .version = "$Revision$",
  .modinit = module_init,
  .modexit = module_exit,
};
Revision:	7599
Committed:	Mon Jun 13 18:56:33 2016 UTC (10 years, 1 month ago) by michael
Content type:	text/x-csrc
File size:	4511 byte(s)
Log Message:	- Minor cleanup to send_umode() to get rid of the redundant struct Client * pointer
#	User	Rev	Content
1	michael	1165	/*
2	michael	2820	* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
3	michael	1165	*
4	michael	2820	* Copyright (c) 1999 Bahamut development team.
5	michael	7006	* Copyright (c) 2011-2016 ircd-hybrid development team
6	michael	1165	*
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	michael	4565	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
20	michael	1165	* USA
21			*/
22
23			/*! \file m_svsnick.c
24	michael	1221	* \brief Includes required functions for processing the SVSNICK command.
25	michael	1165	* \version $Id$
26			*/
27
28	michael	2820
29	michael	1165	#include "stdinc.h"
30			#include "client.h"
31			#include "ircd.h"
32			#include "channel_mode.h"
33			#include "send.h"
34			#include "parse.h"
35			#include "modules.h"
36			#include "irc_string.h"
37	michael	3347	#include "user.h"
38	michael	1165	#include "hash.h"
39			#include "watch.h"
40			#include "whowas.h"
41
42
43	michael	3300	/*! \brief SVSNICK command handler
44	michael	1165	*
45			* \param source_p Pointer to allocated Client struct from which the message
46			* originally comes from. This can be a local or remote client.
47			* \param parc Integer holding the number of supplied arguments.
48			* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL
49			* pointers.
50			* \note Valid arguments for this command are:
51	michael	3096	* - parv[0] = command
52	michael	1165	* - parv[1] = old nickname
53			* - parv[2] = new nickname
54			* - parv[3] = timestamp
55			*/
56	michael	2820	static int
57	michael	3156	ms_svsnick(struct Client source_p, int parc, char parv[])
58	michael	1165	{
59			struct Client target_p = NULL, exists_p = NULL;
60
61	michael	7469	if (!HasFlag(source_p, FLAGS_SERVICE))
62	michael	2820	return 0;
63	michael	1165
64	michael	7469	if (!valid_nickname(parv[2], 1))
65			return 0;
66
67	michael	3967	if ((target_p = find_person(source_p, parv[1])) == NULL)
68	michael	2820	return 0;
69	michael	1165
70	michael	3967	if (!MyConnect(target_p))
71			{
72			if (target_p->from == source_p->from)
73			{
74			sendto_realops_flags(UMODE_DEBUG, L_ALL, SEND_NOTICE,
75			"Received wrong-direction SVSNICK "
76			"for %s (behind %s) from %s",
77			target_p->name, source_p->from->name,
78			get_client_name(source_p, HIDE_IP));
79			return 0;
80			}
81
82			sendto_one(target_p, ":%s SVSNICK %s %s %s", source_p->id,
83			target_p->id, parv[2], parv[3]);
84	michael	2820	return 0;
85	michael	3967	}
86	michael	1165
87	michael	1169	if ((exists_p = hash_find_client(parv[2])))
88	michael	1165	{
89	michael	3138	if (target_p == exists_p)
90			{
91			if (!strcmp(target_p->name, parv[2]))
92			return 0;
93			}
94			else if (IsUnknown(exists_p))
95	michael	3171	exit_client(exists_p, "SVSNICK Override");
96	michael	1165	else
97			{
98	michael	3171	exit_client(target_p, "SVSNICK Collide");
99	michael	2820	return 0;
100	michael	1165	}
101			}
102
103	michael	7330	target_p->tsinfo = strtoumax(parv[3], NULL, 10);
104	michael	1165	clear_ban_cache_client(target_p);
105			watch_check_hash(target_p, RPL_LOGOFF);
106
107			if (HasUMode(target_p, UMODE_REGISTERED))
108			{
109	michael	5548	const unsigned int oldmodes = target_p->umodes;
110	michael	3246	char modebuf[IRCD_BUFSIZE] = "";
111	michael	1165
112			DelUMode(target_p, UMODE_REGISTERED);
113	michael	7599	send_umode(target_p, 1, oldmodes, modebuf);
114	michael	1165	}
115
116	michael	6774	sendto_common_channels_local(target_p, 1, 0, 0, ":%s!%s@%s NICK :%s",
117	michael	1165	target_p->name, target_p->username,
118			target_p->host, parv[2]);
119
120	michael	2300	whowas_add_history(target_p, 1);
121	michael	1165
122	michael	6782	sendto_server(NULL, 0, 0, ":%s NICK %s :%ju",
123			target_p->id, parv[2], target_p->tsinfo);
124	michael	1165	hash_del_client(target_p);
125			strlcpy(target_p->name, parv[2], sizeof(target_p->name));
126			hash_add_client(target_p);
127
128			watch_check_hash(target_p, RPL_LOGON);
129
130	michael	6633	fd_note(&target_p->connection->fd, "Nick: %s", target_p->name);
131	michael	2820	return 0;
132	michael	1165	}
133	michael	1230
134	michael	2820	static struct Message svsnick_msgtab =
135			{
136	michael	5881	.cmd = "SVSNICK",
137			.args_min = 4,
138			.args_max = MAXPARA,
139			.handlers[UNREGISTERED_HANDLER] = m_ignore,
140			.handlers[CLIENT_HANDLER] = m_ignore,
141			.handlers[SERVER_HANDLER] = ms_svsnick,
142			.handlers[ENCAP_HANDLER] = m_ignore,
143			.handlers[OPER_HANDLER] = m_ignore
144	michael	1230	};
145
146			static void
147			module_init(void)
148			{
149			mod_add_cmd(&svsnick_msgtab);
150			}
151
152			static void
153			module_exit(void)
154			{
155			mod_del_cmd(&svsnick_msgtab);
156			}
157
158	michael	2820	struct module module_entry =
159			{
160	michael	1230	.version = "$Revision$",
161			.modinit = module_init,
162			.modexit = module_exit,
163			};