trunk/modules/m_dline.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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
 *  USA
 */

/*! \file m_dline.c
 * \brief Includes required functions for processing the DLINE command.
 * \version $Id$
 */

#include "stdinc.h"
#include "list.h"
#include "client.h"
#include "irc_string.h"
#include "conf.h"
#include "ircd.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_dline(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;

    switch (arec->masktype)
    {
      case HM_IPV4:
        if (client_p->connection->aftype == AF_INET)
          if (match_ipv4(&client_p->connection->ip, &arec->Mask.ipa.addr, arec->Mask.ipa.bits))
            conf_try_ban(client_p, arec->conf);
        break;
      case HM_IPV6:
        if (client_p->connection->aftype == AF_INET6)
          if (match_ipv6(&client_p->connection->ip, &arec->Mask.ipa.addr, arec->Mask.ipa.bits))
            conf_try_ban(client_p, arec->conf);
        break;
      default: break;
    }
  }

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

    if (IsDead(client_p))
      continue;

    switch (arec->masktype)
    {
      case HM_IPV4:
        if (client_p->connection->aftype == AF_INET)
          if (match_ipv4(&client_p->connection->ip, &arec->Mask.ipa.addr, arec->Mask.ipa.bits))
            conf_try_ban(client_p, arec->conf);
        break;
      case HM_IPV6:
        if (client_p->connection->aftype == AF_INET6)
          if (match_ipv6(&client_p->connection->ip, &arec->Mask.ipa.addr, arec->Mask.ipa.bits))
            conf_try_ban(client_p, arec->conf);
        break;
      default: break;
    }
  }
}


/* apply_tdline()
 *
 * inputs       -
 * output       - NONE
 * side effects - tkline as given is placed
 */
static void
apply_dline(struct Client *source_p, struct MaskItem *conf,
            time_t tkline_time)
{
  if (tkline_time)
  {
    conf->until = CurrentTime + tkline_time;

    if (IsClient(source_p))
      sendto_one_notice(source_p, &me, ":Added temporary %d min. D-Line [%s]",
                        tkline_time/60, conf->host);
    sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
                         "%s added temporary %d min. D-Line for [%s] [%s]",
                         get_oper_name(source_p), tkline_time/60,
                         conf->host, conf->reason);
    ilog(LOG_TYPE_DLINE, "%s added temporary %d min. D-Line for [%s] [%s]",
         get_oper_name(source_p), tkline_time/60, conf->host, conf->reason);
  }
  else
  {
    if (IsClient(source_p))
      sendto_one_notice(source_p, &me, ":Added D-Line [%s]", conf->host);

    sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
                         "%s added D-Line for [%s] [%s]",
                         get_oper_name(source_p), conf->host, conf->reason);
    ilog(LOG_TYPE_DLINE, "%s added D-Line for [%s] [%s]",
         get_oper_name(source_p), conf->host, conf->reason);

  }

  SetConfDatabase(conf);
  conf->setat = CurrentTime;
  check_dline(add_conf_by_address(CONF_DLINE, conf));
}

/* mo_dline()
 *
 * inputs       - pointer to server
 *              - pointer to client
 *              - parameter count
 *              - parameter list
 * output       -
 * side effects - D line is added
 *
 */
static int
mo_dline(struct Client *source_p, int parc, char *parv[])
{
  char def_reason[] = CONF_NOREASON;
  char *dlhost = NULL, *reason = NULL;
  char *target_server = NULL;
  const char *creason;
  const struct Client *target_p = NULL;
  struct irc_ssaddr daddr;
  struct MaskItem *conf=NULL;
  time_t tkline_time=0;
  int bits = 0, aftype = 0, t = 0;
  const char *current_date = NULL;
  char hostip[HOSTIPLEN + 1];
  char buffer[IRCD_BUFSIZE];

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

  if (parse_aline("DLINE", source_p,  parc, parv, AWILD, &dlhost,
                  NULL, &tkline_time, &target_server, &reason) < 0)
    return 0;

  if (target_server)
  {
    sendto_match_servs(source_p, target_server, CAP_DLN, "DLINE %s %lu %s :%s",
                       target_server, (unsigned long)tkline_time,
                       dlhost, 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, "DLINE", CAP_DLN, SHARED_DLINE,
                   "%d %s :%s", tkline_time, dlhost, reason);

  if ((t = parse_netmask(dlhost, NULL, &bits)) == HM_HOST)
  {
    if ((target_p = find_chasing(source_p, dlhost)) == NULL)
      return 0;  /* find_chasing sends ERR_NOSUCHNICK */

    if (!MyConnect(target_p))
    {
      sendto_one_notice(source_p, &me, ":Cannot DLINE nick on another server");
      return 0;
    }

    if (IsExemptKline(target_p))
    {
      sendto_one_notice(source_p, &me, ":%s is E-lined",
                        target_p->name);
      return 0;
    }

    getnameinfo((struct sockaddr *)&target_p->connection->ip,
                target_p->connection->ip.ss_len, hostip,
                sizeof(hostip), NULL, 0, NI_NUMERICHOST);
    dlhost = hostip;
    t = parse_netmask(dlhost, NULL, &bits);
    assert(t == HM_IPV4 || t == HM_IPV6);
  }

  if (bits < 8)
  {
    sendto_one_notice(source_p, &me, ":For safety, bitmasks less than 8 require conf access.");
    return 0;
  }

  if (t == HM_IPV6)
    aftype = AF_INET6;
  else
    aftype = AF_INET;

  parse_netmask(dlhost, &daddr, NULL);

  if ((conf = find_dline_conf(&daddr, aftype)))
  {
    creason = conf->reason ? conf->reason : def_reason;

    if (IsConfExemptKline(conf))
      sendto_one_notice(source_p, &me, ":[%s] is (E)d-lined by [%s] - %s",
                        dlhost, conf->host, creason);
    else
      sendto_one_notice(source_p, &me, ":[%s] already D-lined by [%s] - %s",
                        dlhost, conf->host, creason);
    return 0;
  }

  current_date = smalldate(0);

  if (!valid_comment(source_p, reason, 1))
    return 0;

  conf = conf_make(CONF_DLINE);
  conf->host = xstrdup(dlhost);

  if (tkline_time)
    snprintf(buffer, sizeof(buffer), "Temporary D-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);
  apply_dline(source_p, conf, tkline_time);
  return 0;
}

static int
ms_dline(struct Client *source_p, int parc, char *parv[])
{
  char def_reason[] = CONF_NOREASON;
  char *dlhost, *reason;
  const char *creason;
  const struct Client *target_p = NULL;
  struct irc_ssaddr daddr;
  struct MaskItem *conf=NULL;
  time_t tkline_time=0;
  int bits = 0, aftype = 0, t = 0;
  const char *current_date = NULL;
  char hostip[HOSTIPLEN + 1];
  char buffer[IRCD_BUFSIZE];

  if (parc != 5 || EmptyString(parv[4]))
    return 0;

  /* parv[0]  parv[1]        parv[2]      parv[3]  parv[4] */
  /* command  target_server  tkline_time  host     reason  */
  sendto_match_servs(source_p, parv[1], CAP_DLN,
                     "DLINE %s %s %s :%s",
                     parv[1], parv[2], parv[3], parv[4]);

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

  tkline_time = valid_tkline(parv[2], TK_SECONDS);
  dlhost = parv[3];
  reason = parv[4];

  if (HasFlag(source_p, FLAGS_SERVICE) ||
      find_matching_name_conf(CONF_ULINE, source_p->servptr->name,
                              source_p->username, source_p->host,
                              SHARED_DLINE))
  {
    if ((t = parse_netmask(dlhost, NULL, &bits)) == HM_HOST)
    {
      if ((target_p = find_chasing(source_p, dlhost)) == NULL)
        return 0;  /* find_chasing sends ERR_NOSUCHNICK */

      if (!MyConnect(target_p))
      {
        if (IsClient(source_p))
          sendto_one_notice(source_p, &me, ":Cannot DLINE nick on another server");
        return 0;
      }

      if (IsExemptKline(target_p))
      {
        if (IsClient(source_p))
          sendto_one_notice(source_p, &me, ":%s is E-lined", target_p->name);
        return 0;
      }

      getnameinfo((struct sockaddr *)&target_p->connection->ip,
                  target_p->connection->ip.ss_len, hostip,
                  sizeof(hostip), NULL, 0, NI_NUMERICHOST);
      dlhost = hostip;
      t = parse_netmask(dlhost, NULL, &bits);
      assert(t == HM_IPV4 || t == HM_IPV6);
    }

    if (bits < 8)
    {
      if (IsClient(source_p))
        sendto_one_notice(source_p, &me, ":For safety, bitmasks less than 8 require conf access.");
      return 0;
    }

    if (t == HM_IPV6)
      aftype= AF_INET6;
    else
      aftype = AF_INET;

    parse_netmask(dlhost, &daddr, NULL);

    if ((conf = find_dline_conf(&daddr, aftype)))
    {
      if (!IsClient(source_p))
        return 0;

      creason = conf->reason ? conf->reason : def_reason;
      if (IsConfExemptKline(conf))
        sendto_one_notice(source_p, &me, ":[%s] is (E)d-lined by [%s] - %s",
                          dlhost, conf->host, creason);
      else
        sendto_one_notice(source_p, &me, ":[%s] already D-lined by [%s] - %s",
                          dlhost, conf->host, creason);
      return 0;
    }

    current_date = smalldate(0);

    if (!valid_comment(source_p, reason, 1))
      return 0;

    conf = conf_make(CONF_DLINE);
    conf->host = xstrdup(dlhost);

    if (tkline_time)
      snprintf(buffer, sizeof(buffer), "Temporary D-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);
    apply_dline(source_p, conf, tkline_time);
  }

  return 0;
}

static struct Message dline_msgtab =
{
  "DLINE", NULL, 0, 0, 2, MAXPARA, MFLG_SLOW, 0,
  { m_unregistered, m_not_oper, ms_dline, m_ignore, mo_dline, m_ignore }
};

static void
module_init(void)
{
  mod_add_cmd(&dline_msgtab);
  add_capability("DLN", CAP_DLN, 1);
}

static void
module_exit(void)
{
  mod_del_cmd(&dline_msgtab);
  delete_capability("DLN");
}

struct module module_entry =
{
  .node    = { NULL, NULL, NULL },
  .name    = NULL,
  .version = "$Revision$",
  .handle  = NULL,
  .modinit = module_init,
  .modexit = module_exit,
  .flags   = 0
};
Revision:	4639
Committed:	Sun Sep 21 11:17:58 2014 UTC (10 years, 11 months ago) by michael
Content type:	text/x-csrc
File size:	11277 byte(s)
Log Message:	- m_dline.c, m_undline.c: allow servers to add/remove DLINEs
#	User	Rev	Content
1	michael	1058	/*
2	michael	2810	* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
3	michael	1058	*
4	michael	2818	* Copyright (c) 1997-2014 ircd-hybrid development team
5	michael	1058	*
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	michael	1058	* USA
20			*/
21
22	michael	2810	/*! \file m_dline.c
23	michael	3348	* \brief Includes required functions for processing the DLINE command.
24	michael	2810	* \version $Id$
25			*/
26
27	michael	1058	#include "stdinc.h"
28			#include "list.h"
29			#include "client.h"
30			#include "irc_string.h"
31	michael	1632	#include "conf.h"
32	michael	1058	#include "ircd.h"
33			#include "hostmask.h"
34			#include "numeric.h"
35	michael	1309	#include "log.h"
36	michael	3347	#include "misc.h"
37	michael	1058	#include "send.h"
38			#include "hash.h"
39	michael	3347	#include "server.h"
40	michael	1058	#include "parse.h"
41			#include "modules.h"
42	michael	1622	#include "conf_db.h"
43	michael	1666	#include "memory.h"
44	michael	1058
45
46	michael	3929	static void
47			check_dline(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			if (IsDead(client_p))
56			continue;
57
58			switch (arec->masktype)
59			{
60			case HM_IPV4:
61	michael	4588	if (client_p->connection->aftype == AF_INET)
62			if (match_ipv4(&client_p->connection->ip, &arec->Mask.ipa.addr, arec->Mask.ipa.bits))
63	michael	3929	conf_try_ban(client_p, arec->conf);
64			break;
65			case HM_IPV6:
66	michael	4588	if (client_p->connection->aftype == AF_INET6)
67			if (match_ipv6(&client_p->connection->ip, &arec->Mask.ipa.addr, arec->Mask.ipa.bits))
68	michael	3929	conf_try_ban(client_p, arec->conf);
69			break;
70			default: break;
71			}
72			}
73
74			DLINK_FOREACH_SAFE(ptr, ptr_next, unknown_list.head)
75			{
76			struct Client *client_p = ptr->data;
77
78			if (IsDead(client_p))
79			continue;
80
81			switch (arec->masktype)
82			{
83			case HM_IPV4:
84	michael	4588	if (client_p->connection->aftype == AF_INET)
85			if (match_ipv4(&client_p->connection->ip, &arec->Mask.ipa.addr, arec->Mask.ipa.bits))
86	michael	3929	conf_try_ban(client_p, arec->conf);
87			break;
88			case HM_IPV6:
89	michael	4588	if (client_p->connection->aftype == AF_INET6)
90			if (match_ipv6(&client_p->connection->ip, &arec->Mask.ipa.addr, arec->Mask.ipa.bits))
91	michael	3929	conf_try_ban(client_p, arec->conf);
92			break;
93			default: break;
94			}
95			}
96			}
97
98
99	michael	1058	/* apply_tdline()
100			*
101			* inputs -
102			* output - NONE
103			* side effects - tkline as given is placed
104			*/
105			static void
106	michael	1632	apply_dline(struct Client source_p, struct MaskItem conf,
107	michael	1622	time_t tkline_time)
108	michael	1058	{
109	michael	1622	if (tkline_time)
110			{
111	michael	1649	conf->until = CurrentTime + tkline_time;
112	michael	4639
113			if (IsClient(source_p))
114			sendto_one_notice(source_p, &me, ":Added temporary %d min. D-Line [%s]",
115			tkline_time/60, conf->host);
116	michael	1622	sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
117			"%s added temporary %d min. D-Line for [%s] [%s]",
118			get_oper_name(source_p), tkline_time/60,
119	michael	1632	conf->host, conf->reason);
120	michael	1622	ilog(LOG_TYPE_DLINE, "%s added temporary %d min. D-Line for [%s] [%s]",
121	michael	1632	get_oper_name(source_p), tkline_time/60, conf->host, conf->reason);
122	michael	1622	}
123			else
124			{
125	michael	4639	if (IsClient(source_p))
126			sendto_one_notice(source_p, &me, ":Added D-Line [%s]", conf->host);
127
128	michael	1622	sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
129			"%s added D-Line for [%s] [%s]",
130	michael	1632	get_oper_name(source_p), conf->host, conf->reason);
131	michael	1622	ilog(LOG_TYPE_DLINE, "%s added D-Line for [%s] [%s]",
132	michael	1632	get_oper_name(source_p), conf->host, conf->reason);
133	michael	1058
134	michael	1622	}
135
136	michael	1632	SetConfDatabase(conf);
137			conf->setat = CurrentTime;
138	michael	3929	check_dline(add_conf_by_address(CONF_DLINE, conf));
139	michael	1058	}
140
141			/* mo_dline()
142			*
143			* inputs - pointer to server
144			* - pointer to client
145			* - parameter count
146			* - parameter list
147			* output -
148			* side effects - D line is added
149			*
150			*/
151	michael	2820	static int
152	michael	3156	mo_dline(struct Client source_p, int parc, char parv[])
153	michael	1058	{
154	michael	1794	char def_reason[] = CONF_NOREASON;
155	michael	1622	char dlhost = NULL, reason = NULL;
156	michael	1301	char *target_server = NULL;
157	michael	1058	const char *creason;
158			const struct Client *target_p = NULL;
159			struct irc_ssaddr daddr;
160	michael	1632	struct MaskItem *conf=NULL;
161	michael	1058	time_t tkline_time=0;
162	michael	1644	int bits = 0, aftype = 0, t = 0;
163	michael	1058	const char *current_date = NULL;
164	michael	1398	char hostip[HOSTIPLEN + 1];
165	michael	1230	char buffer[IRCD_BUFSIZE];
166	michael	1058
167	michael	1301	if (!HasOFlag(source_p, OPER_FLAG_DLINE))
168	michael	1058	{
169	michael	3109	sendto_one_numeric(source_p, &me, ERR_NOPRIVS, "dline");
170	michael	2820	return 0;
171	michael	1058	}
172
173			if (parse_aline("DLINE", source_p, parc, parv, AWILD, &dlhost,
174	michael	1301	NULL, &tkline_time, &target_server, &reason) < 0)
175	michael	2820	return 0;
176	michael	1058
177	michael	3368	if (target_server)
178	michael	1301	{
179	michael	2807	sendto_match_servs(source_p, target_server, CAP_DLN, "DLINE %s %lu %s :%s",
180			target_server, (unsigned long)tkline_time,
181			dlhost, reason);
182	michael	1301
183			/* Allow ON to apply local kline as well if it matches */
184	michael	1652	if (match(target_server, me.name))
185	michael	2820	return 0;
186	michael	1301	}
187			else
188			cluster_a_line(source_p, "DLINE", CAP_DLN, SHARED_DLINE,
189			"%d %s :%s", tkline_time, dlhost, reason);
190
191	michael	1058	if ((t = parse_netmask(dlhost, NULL, &bits)) == HM_HOST)
192			{
193	michael	3192	if ((target_p = find_chasing(source_p, dlhost)) == NULL)
194	michael	3737	return 0; /* find_chasing sends ERR_NOSUCHNICK */
195	michael	1058
196			if (!MyConnect(target_p))
197			{
198	michael	3118	sendto_one_notice(source_p, &me, ":Cannot DLINE nick on another server");
199	michael	2820	return 0;
200	michael	1058	}
201
202			if (IsExemptKline(target_p))
203			{
204	michael	3110	sendto_one_notice(source_p, &me, ":%s is E-lined",
205			target_p->name);
206	michael	2820	return 0;
207	michael	1058	}
208
209	michael	4588	getnameinfo((struct sockaddr *)&target_p->connection->ip,
210			target_p->connection->ip.ss_len, hostip,
211	michael	1123	sizeof(hostip), NULL, 0, NI_NUMERICHOST);
212	michael	1058	dlhost = hostip;
213			t = parse_netmask(dlhost, NULL, &bits);
214			assert(t == HM_IPV4 \|\| t == HM_IPV6);
215			}
216
217			if (bits < 8)
218			{
219	michael	3110	sendto_one_notice(source_p, &me, ":For safety, bitmasks less than 8 require conf access.");
220	michael	2820	return 0;
221	michael	1058	}
222
223			if (t == HM_IPV6)
224	michael	1644	aftype = AF_INET6;
225	michael	1058	else
226	michael	1644	aftype = AF_INET;
227	michael	1058
228			parse_netmask(dlhost, &daddr, NULL);
229
230	michael	3368	if ((conf = find_dline_conf(&daddr, aftype)))
231	michael	1058	{
232	michael	1632	creason = conf->reason ? conf->reason : def_reason;
233	michael	2810
234	michael	1632	if (IsConfExemptKline(conf))
235	michael	3110	sendto_one_notice(source_p, &me, ":[%s] is (E)d-lined by [%s] - %s",
236			dlhost, conf->host, creason);
237	michael	1058	else
238	michael	3110	sendto_one_notice(source_p, &me, ":[%s] already D-lined by [%s] - %s",
239			dlhost, conf->host, creason);
240	michael	2820	return 0;
241	michael	1058	}
242
243	michael	3208	current_date = smalldate(0);
244	michael	1058
245	michael	1243	if (!valid_comment(source_p, reason, 1))
246	michael	2820	return 0;
247	michael	1058
248	michael	1632	conf = conf_make(CONF_DLINE);
249	michael	1646	conf->host = xstrdup(dlhost);
250	michael	1058
251	michael	3368	if (tkline_time)
252	michael	1233	snprintf(buffer, sizeof(buffer), "Temporary D-line %d min. - %s (%s)",
253			(int)(tkline_time/60), reason, current_date);
254	michael	1058	else
255	michael	1233	snprintf(buffer, sizeof(buffer), "%s (%s)", reason, current_date);
256	michael	1058
257	michael	1646	conf->reason = xstrdup(buffer);
258	michael	1632	apply_dline(source_p, conf, tkline_time);
259	michael	2820	return 0;
260	michael	1058	}
261
262	michael	2820	static int
263	michael	3156	ms_dline(struct Client source_p, int parc, char parv[])
264	michael	1301	{
265	michael	1794	char def_reason[] = CONF_NOREASON;
266	michael	1622	char dlhost, reason;
267	michael	1301	const char *creason;
268			const struct Client *target_p = NULL;
269			struct irc_ssaddr daddr;
270	michael	1632	struct MaskItem *conf=NULL;
271	michael	1301	time_t tkline_time=0;
272	michael	1644	int bits = 0, aftype = 0, t = 0;
273	michael	1301	const char *current_date = NULL;
274	michael	1398	char hostip[HOSTIPLEN + 1];
275	michael	1301	char buffer[IRCD_BUFSIZE];
276
277			if (parc != 5 \|\| EmptyString(parv[4]))
278	michael	2820	return 0;
279	michael	1301
280			/* parv[0] parv[1] parv[2] parv[3] parv[4] */
281	michael	4639	/* command target_server tkline_time host reason */
282	michael	1301	sendto_match_servs(source_p, parv[1], CAP_DLN,
283			"DLINE %s %s %s :%s",
284			parv[1], parv[2], parv[3], parv[4]);
285
286	michael	1652	if (match(parv[1], me.name))
287	michael	2820	return 0;
288	michael	1301
289			tkline_time = valid_tkline(parv[2], TK_SECONDS);
290			dlhost = parv[3];
291			reason = parv[4];
292
293	michael	2810	if (HasFlag(source_p, FLAGS_SERVICE) \|\|
294			find_matching_name_conf(CONF_ULINE, source_p->servptr->name,
295	michael	1301	source_p->username, source_p->host,
296			SHARED_DLINE))
297			{
298			if ((t = parse_netmask(dlhost, NULL, &bits)) == HM_HOST)
299			{
300	michael	3192	if ((target_p = find_chasing(source_p, dlhost)) == NULL)
301	michael	3737	return 0; /* find_chasing sends ERR_NOSUCHNICK */
302	michael	1301
303			if (!MyConnect(target_p))
304			{
305	michael	4639	if (IsClient(source_p))
306			sendto_one_notice(source_p, &me, ":Cannot DLINE nick on another server");
307	michael	2820	return 0;
308	michael	1301	}
309
310			if (IsExemptKline(target_p))
311			{
312	michael	4639	if (IsClient(source_p))
313			sendto_one_notice(source_p, &me, ":%s is E-lined", target_p->name);
314	michael	2820	return 0;
315	michael	1301	}
316
317	michael	4588	getnameinfo((struct sockaddr *)&target_p->connection->ip,
318			target_p->connection->ip.ss_len, hostip,
319	michael	1301	sizeof(hostip), NULL, 0, NI_NUMERICHOST);
320			dlhost = hostip;
321			t = parse_netmask(dlhost, NULL, &bits);
322			assert(t == HM_IPV4 \|\| t == HM_IPV6);
323			}
324
325			if (bits < 8)
326			{
327	michael	4639	if (IsClient(source_p))
328			sendto_one_notice(source_p, &me, ":For safety, bitmasks less than 8 require conf access.");
329	michael	2820	return 0;
330	michael	1301	}
331
332			if (t == HM_IPV6)
333	michael	1644	aftype= AF_INET6;
334	michael	1301	else
335	michael	1644	aftype = AF_INET;
336	michael	1301
337			parse_netmask(dlhost, &daddr, NULL);
338
339	michael	3368	if ((conf = find_dline_conf(&daddr, aftype)))
340	michael	1301	{
341	michael	4639	if (!IsClient(source_p))
342			return 0;
343
344	michael	1632	creason = conf->reason ? conf->reason : def_reason;
345			if (IsConfExemptKline(conf))
346	michael	3110	sendto_one_notice(source_p, &me, ":[%s] is (E)d-lined by [%s] - %s",
347			dlhost, conf->host, creason);
348	michael	1301	else
349	michael	3110	sendto_one_notice(source_p, &me, ":[%s] already D-lined by [%s] - %s",
350			dlhost, conf->host, creason);
351	michael	2820	return 0;
352	michael	1301	}
353
354	michael	3208	current_date = smalldate(0);
355	michael	1301
356			if (!valid_comment(source_p, reason, 1))
357	michael	2820	return 0;
358	michael	1301
359	michael	1632	conf = conf_make(CONF_DLINE);
360	michael	1646	conf->host = xstrdup(dlhost);
361	michael	1301
362	michael	3368	if (tkline_time)
363	michael	1301	snprintf(buffer, sizeof(buffer), "Temporary D-line %d min. - %s (%s)",
364			(int)(tkline_time/60), reason, current_date);
365			else
366			snprintf(buffer, sizeof(buffer), "%s (%s)", reason, current_date);
367
368	michael	1646	conf->reason = xstrdup(buffer);
369	michael	1632	apply_dline(source_p, conf, tkline_time);
370	michael	1301	}
371	michael	2820
372			return 0;
373	michael	1301	}
374
375	michael	2810	static struct Message dline_msgtab =
376			{
377	michael	4545	"DLINE", NULL, 0, 0, 2, MAXPARA, MFLG_SLOW, 0,
378	michael	2810	{ m_unregistered, m_not_oper, ms_dline, m_ignore, mo_dline, m_ignore }
379	michael	1230	};
380
381			static void
382			module_init(void)
383			{
384			mod_add_cmd(&dline_msgtab);
385	michael	1301	add_capability("DLN", CAP_DLN, 1);
386	michael	1230	}
387
388			static void
389			module_exit(void)
390			{
391			mod_del_cmd(&dline_msgtab);
392	michael	1301	delete_capability("DLN");
393	michael	1230	}
394
395	michael	2810	struct module module_entry =
396			{
397	michael	1230	.node = { NULL, NULL, NULL },
398			.name = NULL,
399			.version = "$Revision$",
400			.handle = NULL,
401			.modinit = module_init,
402			.modexit = module_exit,
403			.flags = 0
404			};