trunk/modules/m_kline.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_kline.c
 * \brief Includes required functions for processing the KLINE command.
 * \version $Id$
 */

#include "stdinc.h"
#include "list.h"
#include "client.h"
#include "irc_string.h"
#include "ircd.h"
#include "conf.h"
#include "hostmask.h"
#include "numeric.h"
#include "log.h"
#include "misc.h"
#include "send.h"
#include "hash.h"
#include "server.h"
#include "parse.h"
#include "modules.h"
#include "conf_db.h"
#include "memory.h"


static void
check_kline(struct AddressRec *arec)
{
  dlink_node *ptr = NULL, *ptr_next = NULL;

  DLINK_FOREACH_SAFE(ptr, ptr_next, local_client_list.head)
  {
    struct Client *client_p = ptr->data;

    if (IsDead(client_p))
      continue;

    if (match(arec->username, client_p->username))
      continue;

    switch (arec->masktype)
    {
      case HM_IPV4:
        if (client_p->localClient->aftype == AF_INET)
          if (match_ipv4(&client_p->localClient->ip, &arec->Mask.ipa.addr, arec->Mask.ipa.bits))
            conf_try_ban(client_p, arec->conf);
        break;
      case HM_IPV6:
        if (client_p->localClient->aftype == AF_INET6)
          if (match_ipv6(&client_p->localClient->ip, &arec->Mask.ipa.addr, arec->Mask.ipa.bits))
            conf_try_ban(client_p, arec->conf);
        break;
      default:  /* HM_HOST */
        if (!match(arec->Mask.hostname, client_p->host))
          conf_try_ban(client_p, arec->conf);
        break;
    }
  }
}

/* apply_tkline()
 *
 * inputs       -
 * output       - NONE
 * side effects - tkline as given is placed
 */
static void
m_kline_add_kline(struct Client *source_p, struct MaskItem *conf,
                  time_t tkline_time)
{
  if (tkline_time)
  {
    conf->until = CurrentTime + tkline_time;
    sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
                         "%s added temporary %d min. K-Line for [%s@%s] [%s]",
                         get_oper_name(source_p), tkline_time/60,
                         conf->user, conf->host,
                         conf->reason);
    sendto_one_notice(source_p, &me, ":Added temporary %d min. K-Line [%s@%s]",
                      tkline_time/60, conf->user, conf->host);
    ilog(LOG_TYPE_KLINE, "%s added temporary %d min. K-Line for [%s@%s] [%s]",
         get_oper_name(source_p), tkline_time/60,
         conf->user, conf->host, conf->reason);
  }
  else
  {
    sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
                         "%s added K-Line for [%s@%s] [%s]",
                         get_oper_name(source_p),
                         conf->user, conf->host, conf->reason);
    sendto_one_notice(source_p, &me, ":Added K-Line [%s@%s]",
                      conf->user, conf->host);
    ilog(LOG_TYPE_KLINE, "%s added K-Line for [%s@%s] [%s]",
         get_oper_name(source_p), conf->user, conf->host, conf->reason);
  }

  conf->setat = CurrentTime;
  SetConfDatabase(conf);

  check_kline(add_conf_by_address(CONF_KLINE, conf));
}

/* already_placed_kline()
 * inputs       - user to complain to, username & host to check for
 * outputs      - returns 1 on existing K-line, 0 if doesn't exist
 * side effects - notifies source_p if the K-line already exists
 */
/*
 * Note: This currently works if the new K-line is a special case of an
 *       existing K-line, but not the other way round. To do that we would
 *       have to walk the hash and check every existing K-line. -A1kmm.
 */
static int
already_placed_kline(struct Client *source_p, const char *luser, const char *lhost, int warn)
{
  const char *reason;
  struct irc_ssaddr iphost, *piphost;
  struct MaskItem *conf = NULL;
  int t = 0;
  int aftype = 0;

  if ((t = parse_netmask(lhost, &iphost, NULL)) != HM_HOST)
  {
    if (t == HM_IPV6)
      aftype = AF_INET6;
    else
      aftype = AF_INET;
    piphost = &iphost;
  }
  else
    piphost = NULL;

  if ((conf = find_conf_by_address(lhost, piphost, CONF_KLINE, aftype, luser, NULL, 0)))
  {
    if (warn)
    {
      reason = conf->reason ? conf->reason : CONF_NOREASON;
      sendto_one_notice(source_p, &me, ":[%s@%s] already K-Lined by [%s@%s] - %s",
                        luser, lhost, conf->user, conf->host, reason);
    }

    return 1;
  }

  return 0;
}

/* mo_kline()
 *
 * inputs       - pointer to server
 *              - pointer to client
 *              - parameter count
 *              - parameter list
 * output       -
 * side effects - k line is added
 */
static int
mo_kline(struct Client *source_p, int parc, char *parv[])
{
  char buffer[IRCD_BUFSIZE];
  char *reason = NULL;
  char *user = NULL;
  char *host = NULL;
  const char *current_date;
  char *target_server = NULL;
  struct MaskItem *conf;
  time_t tkline_time = 0;

  if (!HasOFlag(source_p, OPER_FLAG_KLINE))
  {
    sendto_one_numeric(source_p, &me, ERR_NOPRIVS, "kline");
    return 0;
  }

  if (parse_aline("KLINE", source_p, parc, parv, AWILD, &user, &host,
                  &tkline_time, &target_server, &reason) < 0)
    return 0;

  if (target_server)
  {
    sendto_match_servs(source_p, target_server, CAP_KLN, "KLINE %s %lu %s %s :%s",
                       target_server, (unsigned long)tkline_time,
                       user, host, reason);

    /* Allow ON to apply local kline as well if it matches */
    if (match(target_server, me.name))
      return 0;
  }
  else
    cluster_a_line(source_p, "KLINE", CAP_KLN, SHARED_KLINE,
                   "%d %s %s :%s", tkline_time, user, host, reason);

  if (already_placed_kline(source_p, user, host, 1))
    return 0;

  current_date = smalldate(0);
  conf = conf_make(CONF_KLINE);

  conf->host = xstrdup(host);
  conf->user = xstrdup(user);

  if (tkline_time)
    snprintf(buffer, sizeof(buffer), "Temporary K-line %d min. - %s (%s)",
             (int)(tkline_time/60), reason, current_date);
  else
    snprintf(buffer, sizeof(buffer), "%s (%s)", reason, current_date);

  conf->reason = xstrdup(buffer);
  m_kline_add_kline(source_p, conf, tkline_time);
  return 0;
}

/* me_kline - handle remote kline. no propagation */
static int
me_kline(struct Client *source_p, int parc, char *parv[])
{
  char buffer[IRCD_BUFSIZE];
  struct MaskItem *conf = NULL;
  time_t tkline_time = 0;
  const char *current_date;
  char *kuser, *khost, *kreason;

  if (parc != 6 || EmptyString(parv[5]))
    return 0;

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

  tkline_time = valid_tkline(parv[2], TK_SECONDS);
  kuser = parv[3];
  khost = parv[4];
  kreason = parv[5];

  current_date = smalldate(0);

  if (HasFlag(source_p, FLAGS_SERVICE) ||
      find_matching_name_conf(CONF_ULINE, source_p->servptr->name,
                              source_p->username, source_p->host,
                              SHARED_KLINE))
  {
    if (!IsClient(source_p) ||
        already_placed_kline(source_p, kuser, khost, 1))
      return 0;

    conf = conf_make(CONF_KLINE);
    conf->host = xstrdup(khost);
    conf->user = xstrdup(kuser);

    if (tkline_time)
      snprintf(buffer, sizeof(buffer), "Temporary K-line %u min. - %s (%s)",
               (unsigned int)(tkline_time/60), kreason, current_date);
    else
      snprintf(buffer, sizeof(buffer), "%s (%s)", kreason, current_date);

    conf->reason = xstrdup(buffer);
    m_kline_add_kline(source_p, conf, tkline_time);
  }

  return 0;
}

static int
ms_kline(struct Client *source_p, int parc, char *parv[])
{
  if (parc != 6 || EmptyString(parv[5]))
    return 0;

  /* parv[0]  parv[1]        parv[2]      parv[3]  parv[4]  parv[5] */
  /* oper     target_server  tkline_time  user     host     reason */
  sendto_match_servs(source_p, parv[1], CAP_KLN, "KLINE %s %s %s %s :%s",
                     parv[1], parv[2], parv[3], parv[4], parv[5]);

  return me_kline(source_p, parc, parv);
}

static struct Message kline_msgtab =
{
  "KLINE", NULL, 0, 0, 2, MAXPARA, MFLG_SLOW, 0,
  { m_unregistered, m_not_oper, ms_kline, me_kline, mo_kline, m_ignore }
};

static void
module_init(void)
{
  mod_add_cmd(&kline_msgtab);
  add_capability("KLN", CAP_KLN, 1);
}

static void
module_exit(void)
{
  mod_del_cmd(&kline_msgtab);
  delete_capability("KLN");
}

struct module module_entry =
{
  .node    = { NULL, NULL, NULL },
  .name    = NULL,
  .version = "$Revision$",
  .handle  = NULL,
  .modinit = module_init,
  .modexit = module_exit,
  .flags   = 0
};
Revision:	4545
Committed:	Fri Aug 22 08:46:13 2014 UTC (11 years, 11 months ago) by michael
Content type:	text/x-csrc
File size:	9106 byte(s)
Log Message:	- Implemented pseudo {} blocks (service aliases) - Fixed compile warnings with -Wmissing-field-initializers
#	User	Rev	Content
1	adx	30	/*
2	michael	2810	* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
3	adx	30	*
4	michael	2818	* 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	2810	/*! \file m_kline.c
23	michael	3350	* \brief Includes required functions for processing the KLINE command.
24	michael	2810	* \version $Id$
25			*/
26
27	adx	30	#include "stdinc.h"
28	michael	1011	#include "list.h"
29	adx	30	#include "client.h"
30			#include "irc_string.h"
31			#include "ircd.h"
32	michael	1632	#include "conf.h"
33	adx	30	#include "hostmask.h"
34			#include "numeric.h"
35	michael	1309	#include "log.h"
36	michael	3347	#include "misc.h"
37	adx	30	#include "send.h"
38			#include "hash.h"
39	michael	3347	#include "server.h"
40	adx	30	#include "parse.h"
41			#include "modules.h"
42	michael	1622	#include "conf_db.h"
43	michael	1666	#include "memory.h"
44	adx	30
45	michael	1058
46	michael	2811	static void
47			check_kline(struct AddressRec *arec)
48			{
49			dlink_node ptr = NULL, ptr_next = NULL;
50
51			DLINK_FOREACH_SAFE(ptr, ptr_next, local_client_list.head)
52			{
53			struct Client *client_p = ptr->data;
54
55	michael	2812	if (IsDead(client_p))
56	michael	2811	continue;
57
58			if (match(arec->username, client_p->username))
59			continue;
60
61			switch (arec->masktype)
62			{
63			case HM_IPV4:
64			if (client_p->localClient->aftype == AF_INET)
65			if (match_ipv4(&client_p->localClient->ip, &arec->Mask.ipa.addr, arec->Mask.ipa.bits))
66	michael	2813	conf_try_ban(client_p, arec->conf);
67	michael	2811	break;
68			case HM_IPV6:
69			if (client_p->localClient->aftype == AF_INET6)
70			if (match_ipv6(&client_p->localClient->ip, &arec->Mask.ipa.addr, arec->Mask.ipa.bits))
71	michael	2813	conf_try_ban(client_p, arec->conf);
72	michael	2811	break;
73			default: /* HM_HOST */
74			if (!match(arec->Mask.hostname, client_p->host))
75	michael	2813	conf_try_ban(client_p, arec->conf);
76	michael	2811	break;
77			}
78			}
79			}
80
81	michael	2810	/* apply_tkline()
82			*
83			* inputs -
84			* output - NONE
85			* side effects - tkline as given is placed
86			*/
87			static void
88			m_kline_add_kline(struct Client source_p, struct MaskItem conf,
89			time_t tkline_time)
90			{
91			if (tkline_time)
92			{
93			conf->until = CurrentTime + tkline_time;
94			sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
95			"%s added temporary %d min. K-Line for [%s@%s] [%s]",
96			get_oper_name(source_p), tkline_time/60,
97			conf->user, conf->host,
98			conf->reason);
99	michael	3110	sendto_one_notice(source_p, &me, ":Added temporary %d min. K-Line [%s@%s]",
100			tkline_time/60, conf->user, conf->host);
101	michael	2810	ilog(LOG_TYPE_KLINE, "%s added temporary %d min. K-Line for [%s@%s] [%s]",
102			get_oper_name(source_p), tkline_time/60,
103			conf->user, conf->host, conf->reason);
104			}
105			else
106			{
107			sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
108			"%s added K-Line for [%s@%s] [%s]",
109			get_oper_name(source_p),
110			conf->user, conf->host, conf->reason);
111	michael	3110	sendto_one_notice(source_p, &me, ":Added K-Line [%s@%s]",
112			conf->user, conf->host);
113	michael	2810	ilog(LOG_TYPE_KLINE, "%s added K-Line for [%s@%s] [%s]",
114			get_oper_name(source_p), conf->user, conf->host, conf->reason);
115			}
116	adx	30
117	michael	2810	conf->setat = CurrentTime;
118			SetConfDatabase(conf);
119	adx	30
120	michael	2811	check_kline(add_conf_by_address(CONF_KLINE, conf));
121	michael	2810	}
122
123			/* already_placed_kline()
124			* inputs - user to complain to, username & host to check for
125			* outputs - returns 1 on existing K-line, 0 if doesn't exist
126			* side effects - notifies source_p if the K-line already exists
127			*/
128			/*
129			* Note: This currently works if the new K-line is a special case of an
130			* existing K-line, but not the other way round. To do that we would
131			* have to walk the hash and check every existing K-line. -A1kmm.
132			*/
133			static int
134			already_placed_kline(struct Client source_p, const char luser, const char *lhost, int warn)
135			{
136			const char *reason;
137			struct irc_ssaddr iphost, *piphost;
138			struct MaskItem *conf = NULL;
139			int t = 0;
140			int aftype = 0;
141
142			if ((t = parse_netmask(lhost, &iphost, NULL)) != HM_HOST)
143			{
144			if (t == HM_IPV6)
145			aftype = AF_INET6;
146			else
147			aftype = AF_INET;
148			piphost = &iphost;
149			}
150			else
151			piphost = NULL;
152
153			if ((conf = find_conf_by_address(lhost, piphost, CONF_KLINE, aftype, luser, NULL, 0)))
154			{
155			if (warn)
156			{
157			reason = conf->reason ? conf->reason : CONF_NOREASON;
158	michael	3110	sendto_one_notice(source_p, &me, ":[%s@%s] already K-Lined by [%s@%s] - %s",
159			luser, lhost, conf->user, conf->host, reason);
160	michael	2810	}
161
162			return 1;
163			}
164
165			return 0;
166			}
167
168	adx	30	/* mo_kline()
169			*
170			* inputs - pointer to server
171			* - pointer to client
172			* - parameter count
173			* - parameter list
174			* output -
175			* side effects - k line is added
176			*/
177	michael	2820	static int
178	michael	3156	mo_kline(struct Client source_p, int parc, char parv[])
179	adx	30	{
180	michael	2810	char buffer[IRCD_BUFSIZE];
181	adx	30	char *reason = NULL;
182			char *user = NULL;
183			char *host = NULL;
184			const char *current_date;
185			char *target_server = NULL;
186	michael	1632	struct MaskItem *conf;
187	adx	30	time_t tkline_time = 0;
188
189	michael	4019	if (!HasOFlag(source_p, OPER_FLAG_KLINE))
190	adx	30	{
191	michael	3109	sendto_one_numeric(source_p, &me, ERR_NOPRIVS, "kline");
192	michael	2820	return 0;
193	adx	30	}
194
195	michael	2810	if (parse_aline("KLINE", source_p, parc, parv, AWILD, &user, &host,
196			&tkline_time, &target_server, &reason) < 0)
197	michael	2820	return 0;
198	adx	30
199	michael	3368	if (target_server)
200	adx	30	{
201	michael	2804	sendto_match_servs(source_p, target_server, CAP_KLN, "KLINE %s %lu %s %s :%s",
202			target_server, (unsigned long)tkline_time,
203			user, host, reason);
204	adx	30
205			/* Allow ON to apply local kline as well if it matches */
206	michael	1652	if (match(target_server, me.name))
207	michael	2820	return 0;
208	adx	30	}
209			else
210			cluster_a_line(source_p, "KLINE", CAP_KLN, SHARED_KLINE,
211	michael	1058	"%d %s %s :%s", tkline_time, user, host, reason);
212	adx	30
213	michael	1243	if (already_placed_kline(source_p, user, host, 1))
214	michael	2820	return 0;
215	adx	30
216	michael	3208	current_date = smalldate(0);
217	michael	1632	conf = conf_make(CONF_KLINE);
218	adx	30
219	michael	1646	conf->host = xstrdup(host);
220			conf->user = xstrdup(user);
221	adx	30
222	michael	3368	if (tkline_time)
223	michael	1233	snprintf(buffer, sizeof(buffer), "Temporary K-line %d min. - %s (%s)",
224			(int)(tkline_time/60), reason, current_date);
225	adx	30	else
226	michael	1233	snprintf(buffer, sizeof(buffer), "%s (%s)", reason, current_date);
227	adx	30
228	michael	1646	conf->reason = xstrdup(buffer);
229	michael	1632	m_kline_add_kline(source_p, conf, tkline_time);
230	michael	2820	return 0;
231	adx	30	}
232
233			/* me_kline - handle remote kline. no propagation */
234	michael	2820	static int
235	michael	3156	me_kline(struct Client source_p, int parc, char parv[])
236	adx	30	{
237	michael	2810	char buffer[IRCD_BUFSIZE];
238	michael	1632	struct MaskItem *conf = NULL;
239	michael	3928	time_t tkline_time = 0;
240	michael	2810	const char *current_date;
241	michael	1622	char kuser, khost, *kreason;
242	adx	30
243	michael	352	if (parc != 6 \|\| EmptyString(parv[5]))
244	michael	2820	return 0;
245	adx	30
246	michael	1652	if (match(parv[1], me.name))
247	michael	2820	return 0;
248	adx	30
249			tkline_time = valid_tkline(parv[2], TK_SECONDS);
250			kuser = parv[3];
251			khost = parv[4];
252			kreason = parv[5];
253
254	michael	3208	current_date = smalldate(0);
255	adx	30
256	michael	2810	if (HasFlag(source_p, FLAGS_SERVICE) \|\|
257			find_matching_name_conf(CONF_ULINE, source_p->servptr->name,
258	adx	30	source_p->username, source_p->host,
259			SHARED_KLINE))
260			{
261			if (!IsClient(source_p) \|\|
262	michael	1243	already_placed_kline(source_p, kuser, khost, 1))
263	michael	2820	return 0;
264	adx	30
265	michael	1632	conf = conf_make(CONF_KLINE);
266	michael	1646	conf->host = xstrdup(khost);
267			conf->user = xstrdup(kuser);
268	adx	30
269	michael	3368	if (tkline_time)
270	michael	3928	snprintf(buffer, sizeof(buffer), "Temporary K-line %u min. - %s (%s)",
271			(unsigned int)(tkline_time/60), kreason, current_date);
272	adx	30	else
273	michael	1233	snprintf(buffer, sizeof(buffer), "%s (%s)", kreason, current_date);
274	adx	30
275	michael	1646	conf->reason = xstrdup(buffer);
276	michael	1632	m_kline_add_kline(source_p, conf, tkline_time);
277	adx	30	}
278	michael	2820
279			return 0;
280	adx	30	}
281
282	michael	2820	static int
283	michael	3156	ms_kline(struct Client source_p, int parc, char parv[])
284	adx	30	{
285	michael	352	if (parc != 6 \|\| EmptyString(parv[5]))
286	michael	2820	return 0;
287	adx	30
288			/* parv[0] parv[1] parv[2] parv[3] parv[4] parv[5] */
289			/* oper target_server tkline_time user host reason */
290	michael	2820	sendto_match_servs(source_p, parv[1], CAP_KLN, "KLINE %s %s %s %s :%s",
291	adx	30	parv[1], parv[2], parv[3], parv[4], parv[5]);
292
293	michael	3156	return me_kline(source_p, parc, parv);
294	adx	30	}
295
296	michael	2810	static struct Message kline_msgtab =
297	adx	30	{
298	michael	4545	"KLINE", NULL, 0, 0, 2, MAXPARA, MFLG_SLOW, 0,
299	michael	2810	{ m_unregistered, m_not_oper, ms_kline, me_kline, mo_kline, m_ignore }
300	michael	1230	};
301
302			static void
303			module_init(void)
304			{
305			mod_add_cmd(&kline_msgtab);
306			add_capability("KLN", CAP_KLN, 1);
307			}
308
309			static void
310			module_exit(void)
311			{
312			mod_del_cmd(&kline_msgtab);
313			delete_capability("KLN");
314			}
315
316	michael	2810	struct module module_entry =
317			{
318	michael	1230	.node = { NULL, NULL, NULL },
319			.name = NULL,
320			.version = "$Revision$",
321			.handle = NULL,
322			.modinit = module_init,
323			.modexit = module_exit,
324			.flags = 0
325			};