modules/core/m_squit.c

/*
 *  ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
 *
 *  Copyright (c) 1997-2014 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_squit.c
 * \brief Includes required functions for processing the SQUIT command.
 * \version $Id$
 */

#include "stdinc.h"
#include "list.h"
#include "client.h"
#include "hash.h"
#include "irc_string.h"
#include "ircd.h"
#include "numeric.h"
#include "conf.h"
#include "log.h"
#include "s_serv.h"
#include "send.h"
#include "parse.h"
#include "modules.h"


/* mo_squit - SQUIT message handler
 *  parv[0] = command
 *  parv[1] = server name
 *  parv[2] = comment
 */
static int
mo_squit(struct Client *source_p, int parc, char *parv[])
{
  struct Client *target_p = NULL;
  struct Client *p;
  dlink_node *ptr;
  char *comment;
  const char *server;
  char def_reason[] = CONF_NOREASON;

  if (parc < 2 || EmptyString(parv[1]))
  {
    sendto_one_numeric(source_p, &me, ERR_NEEDMOREPARAMS, "SQUIT");
    return 0;
  }

  server = parv[1];

  /* The following allows wild cards in SQUIT. Only
   * useful when the command is issued by an oper.
   */
  DLINK_FOREACH(ptr, global_serv_list.head)
  {
    p = ptr->data;

    if (IsServer(p) || IsMe(p))
    {
      if (!match(server, p->name))
      {
        target_p = p;
        break;
      }
    }
  }

  if ((target_p == NULL) || IsMe(target_p))
  {
    sendto_one_numeric(source_p, &me, ERR_NOSUCHSERVER, server);
    return 0;
  }

  if (!MyConnect(target_p) && !HasOFlag(source_p, OPER_FLAG_SQUIT_REMOTE))
  {
    sendto_one_numeric(source_p, &me, ERR_NOPRIVS, "squit:remote");
    return 0;
  }

  if (MyConnect(target_p) && !HasOFlag(source_p, OPER_FLAG_SQUIT))
  {
    sendto_one_numeric(source_p, &me, ERR_NOPRIVS, "squit");
    return 0;
  }

  comment = (parc > 2 && parv[2]) ? parv[2] : def_reason;

  if (strlen(comment) > (size_t)REASONLEN)
    comment[REASONLEN] = '\0';

  if (MyConnect(target_p))
  {
    sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
                         "Received SQUIT %s from %s (%s)",
                         target_p->name, get_client_name(source_p, HIDE_IP), comment);
    ilog(LOG_TYPE_IRCD, "Received SQUIT %s from %s (%s)",
         target_p->name, get_client_name(source_p, HIDE_IP), comment);

    /* To them, we are exiting */
    sendto_one(target_p, ":%s SQUIT %s :%s", ID(source_p), ID(&me), comment);
    /* Send to everything but target */
    sendto_server(target_p, NOCAPS, NOCAPS, ":%s SQUIT %s :%s",
                  ID(source_p), ID(target_p), comment);
  }
  else
    /* Send to everything */
    sendto_server(NULL, NOCAPS, NOCAPS, ":%s SQUIT %s :%s",
                  ID(source_p), ID(target_p), comment);

  AddFlag(target_p, FLAGS_SQUIT);

  exit_client(target_p, comment);
  return 0;
}

/** NOTE: I removed wildcard lookups here, because a wildcarded
 **       SQUIT should/can never happen in ms_squit. -Michael
 **/

/* ms_squit - SQUIT message handler
 *  parv[0] = command
 *  parv[1] = server name
 *  parv[2] = comment
 */
static int
ms_squit(struct Client *source_p, int parc, char *parv[])
{
  struct Client *target_p = NULL;
  const char *comment = NULL;
  dlink_node *ptr;

  if (parc < 2 || EmptyString(parv[parc - 1]))
    return 0;

  if ((target_p = hash_find_server(parv[1])) == NULL)
    return 0;

  if (!IsServer(target_p) && !IsMe(target_p))
    return 0;

  if (IsMe(target_p))
    target_p = source_p->from;

  comment = (parc > 2 && parv[parc - 1]) ? parv[parc - 1] : source_p->name;

  if (MyConnect(target_p))
  {
    sendto_wallops_flags(UMODE_WALLOP, &me, "Remote SQUIT %s from %s (%s)",
                         target_p->name, source_p->name, comment);
    sendto_server(source_p, NOCAPS, NOCAPS,
                  ":%s WALLOPS :Remote SQUIT %s from %s (%s)",
                  me.id, target_p->name, source_p->name, comment);
    ilog(LOG_TYPE_IRCD, "SQUIT From %s : %s (%s)", source_p->name,
         target_p->name, comment);

    /* To them, we are exiting */
    sendto_one(target_p, ":%s SQUIT %s :%s", ID(source_p), ID(&me), comment);

    /* Send to everything but target and source */
    DLINK_FOREACH(ptr, serv_list.head)
    {
      struct Client *client_p = ptr->data;

      if (client_p == target_p || client_p == source_p->from)
        continue;

      sendto_one(client_p, ":%s SQUIT %s :%s",
                 ID(source_p), ID(target_p), comment);
    }
  }
  else
    /* Send to everything but source */
    sendto_server(source_p, NOCAPS, NOCAPS, ":%s SQUIT %s :%s",
                  ID(source_p), ID(target_p), comment);

  AddFlag(target_p, FLAGS_SQUIT);

  exit_client(target_p, comment);
  return 0;
}

static struct Message squit_msgtab =
{
  "SQUIT", 0, 0, 1, MAXPARA, MFLG_SLOW, 0,
  { m_unregistered, m_not_oper, ms_squit, m_ignore, mo_squit, m_ignore }
};

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

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

struct module module_entry =
{
  .node    = { NULL, NULL, NULL },
  .name    = NULL,
  .version = "$Revision$",
  .handle  = NULL,
  .modinit = module_init,
  .modexit = module_exit,
  .flags   = MODULE_FLAG_CORE
};
Revision:	3171
Committed:	Sun Mar 16 11:51:48 2014 UTC (11 years, 5 months ago) by michael
Content type:	text/x-csrc
Original Path:	*ircd-hybrid/trunk/modules/core/m_squit.c*
File size:	5872 byte(s)
Log Message:	- Incorporate Adam's exit_client/quit storm cleanups Note: QS is mandatory now
#	User	Rev	Content
1	adx	30	/*
2	michael	2820	* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
3	adx	30	*
4	michael	2820	* Copyright (c) 1997-2014 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	2820	/*! \file m_squit.c
23			* \brief Includes required functions for processing the SQUIT command.
24			* \version $Id$
25			*/
26
27	adx	30	#include "stdinc.h"
28	michael	1011	#include "list.h"
29	adx	30	#include "client.h"
30			#include "hash.h"
31			#include "irc_string.h"
32			#include "ircd.h"
33			#include "numeric.h"
34	michael	1309	#include "conf.h"
35			#include "log.h"
36	adx	30	#include "s_serv.h"
37			#include "send.h"
38			#include "parse.h"
39			#include "modules.h"
40
41
42			/* mo_squit - SQUIT message handler
43	michael	3096	* parv[0] = command
44	adx	30	* parv[1] = server name
45			* parv[2] = comment
46			*/
47	michael	2820	static int
48	michael	3156	mo_squit(struct Client source_p, int parc, char parv[])
49	adx	30	{
50			struct Client *target_p = NULL;
51			struct Client *p;
52			dlink_node *ptr;
53			char *comment;
54			const char *server;
55	michael	1794	char def_reason[] = CONF_NOREASON;
56	adx	30
57			if (parc < 2 \|\| EmptyString(parv[1]))
58			{
59	michael	3109	sendto_one_numeric(source_p, &me, ERR_NEEDMOREPARAMS, "SQUIT");
60	michael	2820	return 0;
61	adx	30	}
62
63			server = parv[1];
64
65			/* The following allows wild cards in SQUIT. Only
66			* useful when the command is issued by an oper.
67			*/
68			DLINK_FOREACH(ptr, global_serv_list.head)
69			{
70			p = ptr->data;
71
72			if (IsServer(p) \|\| IsMe(p))
73			{
74	michael	1652	if (!match(server, p->name))
75	adx	30	{
76			target_p = p;
77			break;
78			}
79			}
80			}
81
82			if ((target_p == NULL) \|\| IsMe(target_p))
83			{
84	michael	3109	sendto_one_numeric(source_p, &me, ERR_NOSUCHSERVER, server);
85	michael	2820	return 0;
86	adx	30	}
87
88	michael	2801	if (!MyConnect(target_p) && !HasOFlag(source_p, OPER_FLAG_SQUIT_REMOTE))
89	adx	30	{
90	michael	3109	sendto_one_numeric(source_p, &me, ERR_NOPRIVS, "squit:remote");
91	michael	2820	return 0;
92	adx	30	}
93
94	michael	2801	if (MyConnect(target_p) && !HasOFlag(source_p, OPER_FLAG_SQUIT))
95			{
96	michael	3109	sendto_one_numeric(source_p, &me, ERR_NOPRIVS, "squit");
97	michael	2820	return 0;
98	michael	2801	}
99
100	adx	30	comment = (parc > 2 && parv[2]) ? parv[2] : def_reason;
101
102			if (strlen(comment) > (size_t)REASONLEN)
103			comment[REASONLEN] = '\0';
104
105			if (MyConnect(target_p))
106			{
107	michael	1618	sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
108			"Received SQUIT %s from %s (%s)",
109	adx	30	target_p->name, get_client_name(source_p, HIDE_IP), comment);
110	michael	1247	ilog(LOG_TYPE_IRCD, "Received SQUIT %s from %s (%s)",
111	adx	30	target_p->name, get_client_name(source_p, HIDE_IP), comment);
112	michael	3171
113			/* To them, we are exiting */
114			sendto_one(target_p, ":%s SQUIT %s :%s", ID(source_p), ID(&me), comment);
115			/* Send to everything but target */
116			sendto_server(target_p, NOCAPS, NOCAPS, ":%s SQUIT %s :%s",
117			ID(source_p), ID(target_p), comment);
118	adx	30	}
119	michael	3171	else
120			/* Send to everything */
121			sendto_server(NULL, NOCAPS, NOCAPS, ":%s SQUIT %s :%s",
122			ID(source_p), ID(target_p), comment);
123	adx	30
124	michael	3171	AddFlag(target_p, FLAGS_SQUIT);
125
126			exit_client(target_p, comment);
127	michael	2820	return 0;
128	adx	30	}
129
130			/** NOTE: I removed wildcard lookups here, because a wildcarded
131			** SQUIT should/can never happen in ms_squit. -Michael
132			**/
133
134			/* ms_squit - SQUIT message handler
135	michael	3096	* parv[0] = command
136	adx	30	* parv[1] = server name
137			* parv[2] = comment
138			*/
139	michael	2820	static int
140	michael	3156	ms_squit(struct Client source_p, int parc, char parv[])
141	adx	30	{
142			struct Client *target_p = NULL;
143	michael	1572	const char *comment = NULL;
144	michael	3171	dlink_node *ptr;
145	adx	30
146	michael	1572	if (parc < 2 \|\| EmptyString(parv[parc - 1]))
147	michael	2820	return 0;
148	adx	30
149	michael	1572	if ((target_p = hash_find_server(parv[1])) == NULL)
150	michael	2820	return 0;
151	adx	30
152	michael	1572	if (!IsServer(target_p) && !IsMe(target_p))
153	michael	2820	return 0;
154	adx	30
155	michael	1572	if (IsMe(target_p))
156	michael	3156	target_p = source_p->from;
157	adx	30
158	michael	3156	comment = (parc > 2 && parv[parc - 1]) ? parv[parc - 1] : source_p->name;
159	adx	30
160			if (MyConnect(target_p))
161			{
162			sendto_wallops_flags(UMODE_WALLOP, &me, "Remote SQUIT %s from %s (%s)",
163			target_p->name, source_p->name, comment);
164	michael	3156	sendto_server(source_p, NOCAPS, NOCAPS,
165	adx	30	":%s WALLOPS :Remote SQUIT %s from %s (%s)",
166			me.id, target_p->name, source_p->name, comment);
167	michael	1247	ilog(LOG_TYPE_IRCD, "SQUIT From %s : %s (%s)", source_p->name,
168	adx	30	target_p->name, comment);
169	michael	3171
170			/* To them, we are exiting */
171			sendto_one(target_p, ":%s SQUIT %s :%s", ID(source_p), ID(&me), comment);
172
173			/* Send to everything but target and source */
174			DLINK_FOREACH(ptr, serv_list.head)
175			{
176			struct Client *client_p = ptr->data;
177
178			if (client_p == target_p \|\| client_p == source_p->from)
179			continue;
180
181			sendto_one(client_p, ":%s SQUIT %s :%s",
182			ID(source_p), ID(target_p), comment);
183			}
184	michael	2820	}
185	michael	3171	else
186			/* Send to everything but source */
187			sendto_server(source_p, NOCAPS, NOCAPS, ":%s SQUIT %s :%s",
188			ID(source_p), ID(target_p), comment);
189	adx	30
190	michael	3171	AddFlag(target_p, FLAGS_SQUIT);
191
192			exit_client(target_p, comment);
193	michael	2820	return 0;
194	adx	30	}
195	michael	1230
196	michael	2820	static struct Message squit_msgtab =
197			{
198	michael	1230	"SQUIT", 0, 0, 1, MAXPARA, MFLG_SLOW, 0,
199	michael	2820	{ m_unregistered, m_not_oper, ms_squit, m_ignore, mo_squit, m_ignore }
200	michael	1230	};
201
202			static void
203			module_init(void)
204			{
205			mod_add_cmd(&squit_msgtab);
206			}
207
208			static void
209			module_exit(void)
210			{
211			mod_del_cmd(&squit_msgtab);
212			}
213
214	michael	2820	struct module module_entry =
215			{
216	michael	1230	.node = { NULL, NULL, NULL },
217			.name = NULL,
218			.version = "$Revision$",
219			.handle = NULL,
220			.modinit = module_init,
221			.modexit = module_exit,
222			.flags = MODULE_FLAG_CORE
223			};