trunk/modules/m_dline.c

/*
 *  ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
 *  m_dline.c: Bans a user.
 *
 *  Copyright (C) 2002 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 "list.h"
#include "channel.h"
#include "client.h"
#include "irc_string.h"
#include "sprintf_irc.h"
#include "ircd.h"
#include "hostmask.h"
#include "numeric.h"
#include "fdlist.h"
#include "s_bsd.h"
#include "s_conf.h"
#include "s_log.h"
#include "s_misc.h"
#include "send.h"
#include "hash.h"
#include "s_serv.h"
#include "s_gline.h"
#include "parse.h"
#include "modules.h"


static int remove_tdline_match(const char *);

/* apply_tdline()
 *
 * inputs       -
 * output       - NONE
 * side effects - tkline as given is placed
 */
static void
apply_tdline(struct Client *source_p, struct ConfItem *conf,
             const char *current_date, int tkline_time)
{
  struct AccessItem *aconf;

  aconf = map_to_conf(conf);
  aconf->hold = CurrentTime + tkline_time;

  add_temp_line(conf);
  sendto_realops_flags(UMODE_ALL, L_ALL,
                       "%s added temporary %d min. D-Line for [%s] [%s]",
                       get_oper_name(source_p), tkline_time/60,
                       aconf->host, aconf->reason);

  sendto_one(source_p, ":%s NOTICE %s :Added temporary %d min. D-Line [%s]",
             MyConnect(source_p) ? me.name : ID_or_name(&me, source_p->from),
             source_p->name, tkline_time/60, aconf->host);
  ilog(L_TRACE, "%s added temporary %d min. D-Line for [%s] [%s]",
       source_p->name, tkline_time/60, aconf->host, aconf->reason);
  log_oper_action(LOG_TEMP_DLINE_TYPE, source_p, "[%s@%s] [%s]\n",
                  aconf->user, aconf->host, aconf->reason);
  rehashed_klines = 1;
}

/* mo_dline()
 *
 * inputs       - pointer to server
 *              - pointer to client
 *              - parameter count
 *              - parameter list
 * output       -
 * side effects - D line is added
 *
 */
static void
mo_dline(struct Client *client_p, struct Client *source_p,
         int parc, char *parv[])
{
  char def_reason[] = "No reason";
  char *dlhost, *oper_reason, *reason;
  const char *creason;
  const struct Client *target_p = NULL;
  struct irc_ssaddr daddr;
  struct ConfItem *conf=NULL;
  struct AccessItem *aconf=NULL;
  time_t tkline_time=0;
  int bits, t;
  const char *current_date = NULL;
  time_t cur_time;
  char hostip[HOSTIPLEN];
  char buffer[IRCD_BUFSIZE];

  if (!HasOFlag(source_p, OPER_FLAG_K))
  {
    sendto_one(source_p, form_str(ERR_NOPRIVS),
               me.name, source_p->name, "kline");
    return;
  }

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

  if ((t = parse_netmask(dlhost, NULL, &bits)) == HM_HOST)
  {
    if ((target_p = find_chasing(client_p, source_p, dlhost, NULL)) == NULL)
      return;

    if (!MyConnect(target_p))
    {
      sendto_one(source_p,
                 ":%s NOTICE %s :Can't DLINE nick on another server",
                 me.name, source_p->name);
      return;
    }

    if (IsExemptKline(target_p))
    {
      sendto_one(source_p,
                 ":%s NOTICE %s :%s is E-lined", me.name,
                 source_p->name, target_p->name);
      return;
    }

    getnameinfo((struct sockaddr *)&target_p->localClient->ip,
                target_p->localClient->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(source_p,
               ":%s NOTICE %s :For safety, bitmasks less than 8 require conf access.",
               me.name, source_p->name);
    return;
  }

#ifdef IPV6
  if (t == HM_IPV6)
    t = AF_INET6;
  else
#endif
    t = AF_INET;

  parse_netmask(dlhost, &daddr, NULL);

  if ((aconf = find_dline_conf(&daddr, t)) != NULL)
  {
    creason = aconf->reason ? aconf->reason : def_reason;
    if (IsConfExemptKline(aconf))
      sendto_one(source_p,
                 ":%s NOTICE %s :[%s] is (E)d-lined by [%s] - %s",
                 me.name, source_p->name, dlhost, aconf->host, creason);
    else
      sendto_one(source_p,
                 ":%s NOTICE %s :[%s] already D-lined by [%s] - %s",
                 me.name, source_p->name, dlhost, aconf->host, creason);
    return;
  }

  cur_time = CurrentTime;
  current_date = smalldate(cur_time);

  /* Look for an oper reason */
  if ((oper_reason = strchr(reason, '|')) != NULL)
    *oper_reason++ = '\0';

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

  conf = make_conf_item(DLINE_TYPE);
  aconf = map_to_conf(conf);
  DupString(aconf->host, dlhost);

  if (tkline_time != 0)
  {
    snprintf(buffer, sizeof(buffer), "Temporary D-line %d min. - %s (%s)",
             (int)(tkline_time/60), reason, current_date);
    DupString(aconf->reason, buffer);
    if (oper_reason != NULL)
      DupString(aconf->oper_reason, oper_reason);
    apply_tdline(source_p, conf, current_date, tkline_time);
  }
  else
  {
    snprintf(buffer, sizeof(buffer), "%s (%s)", reason, current_date);
    DupString(aconf->reason, buffer);
    if (oper_reason != NULL)
      DupString(aconf->oper_reason, oper_reason);
    add_conf_by_address(CONF_DLINE, aconf);
    write_conf_line(source_p, conf, current_date, cur_time);
  }

  rehashed_klines = 1;
}

/* static int remove_tdline_match(const char *host, const char *user)
 * Input: An ip to undline.
 * Output: returns YES on success, NO if no tdline removed.
 * Side effects: Any matching tdlines are removed.
 */
static int
remove_tdline_match(const char *cidr)
{
  struct AccessItem *td_conf;
  dlink_node *td_node;
  struct irc_ssaddr addr, caddr;
  int nm_t, cnm_t, bits, cbits;
  nm_t = parse_netmask(cidr, &addr, &bits);

  DLINK_FOREACH(td_node, temporary_dlines.head)
  {
    td_conf = map_to_conf(td_node->data);
    cnm_t   = parse_netmask(td_conf->host, &caddr, &cbits);

    if (cnm_t != nm_t)
      continue;

    if((nm_t==HM_HOST && !irccmp(td_conf->host, cidr)) ||
       (nm_t==HM_IPV4 && bits==cbits && match_ipv4(&addr, &caddr, bits))
#ifdef IPV6
       || (nm_t==HM_IPV6 && bits==cbits && match_ipv6(&addr, &caddr, bits))
#endif
      )
    {
      dlinkDelete(td_node, &temporary_dlines);
      delete_one_address_conf(td_conf->host, td_conf);
      return 1;
    }
  }

  return 0;
}

/*
** m_undline
** added May 28th 2000 by Toby Verrall <toot@melnet.co.uk>
** based totally on m_unkline
** added to hybrid-7 7/11/2000 --is
**
**      parv[0] = sender nick
**      parv[1] = dline to remove
*/
static void
mo_undline(struct Client *client_p, struct Client *source_p,
           int parc, char *parv[])
{
  const char *cidr = NULL;

  if (!HasOFlag(source_p, OPER_FLAG_UNKLINE))
  {
    sendto_one(source_p, form_str(ERR_NOPRIVS),
               me.name, source_p->name, "undline");
    return;
  }

  cidr = parv[1];

  if (remove_tdline_match(cidr))
  {
    sendto_one(source_p,
              ":%s NOTICE %s :Un-Dlined [%s] from temporary D-Lines",
              me.name, source_p->name, cidr);
    sendto_realops_flags(UMODE_ALL, L_ALL,
                         "%s has removed the temporary D-Line for: [%s]",
                         get_oper_name(source_p), cidr);
    ilog(L_NOTICE, "%s removed temporary D-Line for [%s]", source_p->name, cidr);
    return;
  }

  if (remove_conf_line(DLINE_TYPE, source_p, cidr, NULL) > 0)
  {
    sendto_one(source_p, ":%s NOTICE %s :D-Line for [%s] is removed",
               me.name, source_p->name, cidr);
    sendto_realops_flags(UMODE_ALL, L_ALL,
                         "%s has removed the D-Line for: [%s]",
                         get_oper_name(source_p), cidr);
    ilog(L_NOTICE, "%s removed D-Line for [%s]",
         get_oper_name(source_p), cidr);
  }
  else
    sendto_one(source_p, ":%s NOTICE %s :No D-Line for [%s] found",
               me.name, source_p->name, cidr);
}

static struct Message dline_msgtab = {
  "DLINE", 0, 0, 2, MAXPARA, MFLG_SLOW, 0,
   {m_unregistered, m_not_oper, rfc1459_command_send_error, m_ignore, mo_dline, m_ignore}
};

static struct Message undline_msgtab = {
  "UNDLINE", 0, 0, 2, MAXPARA, MFLG_SLOW, 0,
   {m_unregistered, m_not_oper, rfc1459_command_send_error, m_ignore, mo_undline, m_ignore}
};

static void
module_init(void)
{
  mod_add_cmd(&dline_msgtab);
  mod_add_cmd(&undline_msgtab);
}

static void
module_exit(void)
{
  mod_del_cmd(&dline_msgtab);
  mod_del_cmd(&undline_msgtab);
}

struct module module_entry = {
  .node    = { NULL, NULL, NULL },
  .name    = NULL,
  .version = "$Revision$",
  .handle  = NULL,
  .modinit = module_init,
  .modexit = module_exit,
  .flags   = 0
};
Revision:	1243
Committed:	Fri Sep 30 10:47:53 2011 UTC (14 years, 10 months ago) by michael
Content type:	text/x-csrc
Original Path:	*ircd-hybrid-8/modules/m_dline.c*
File size:	9217 byte(s)
Log Message:	- move content of msg.h, ircd_handler.h and handlers.h into parse.h and remove headers accordingly - killed common.h - remove m_killhost.c and m_flags.c from contrib/ - sort out unused header includes here and there
#	Content
1	/*
2	* ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
3	* m_dline.c: Bans a user.
4	*
5	* Copyright (C) 2002 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	* $Id$
23	*/
24
25	#include "stdinc.h"
26	#include "list.h"
27	#include "channel.h"
28	#include "client.h"
29	#include "irc_string.h"
30	#include "sprintf_irc.h"
31	#include "ircd.h"
32	#include "hostmask.h"
33	#include "numeric.h"
34	#include "fdlist.h"
35	#include "s_bsd.h"
36	#include "s_conf.h"
37	#include "s_log.h"
38	#include "s_misc.h"
39	#include "send.h"
40	#include "hash.h"
41	#include "s_serv.h"
42	#include "s_gline.h"
43	#include "parse.h"
44	#include "modules.h"
45
46
47	static int remove_tdline_match(const char *);
48
49	/* apply_tdline()
50	*
51	* inputs -
52	* output - NONE
53	* side effects - tkline as given is placed
54	*/
55	static void
56	apply_tdline(struct Client source_p, struct ConfItem conf,
57	const char *current_date, int tkline_time)
58	{
59	struct AccessItem *aconf;
60
61	aconf = map_to_conf(conf);
62	aconf->hold = CurrentTime + tkline_time;
63
64	add_temp_line(conf);
65	sendto_realops_flags(UMODE_ALL, L_ALL,
66	"%s added temporary %d min. D-Line for [%s] [%s]",
67	get_oper_name(source_p), tkline_time/60,
68	aconf->host, aconf->reason);
69
70	sendto_one(source_p, ":%s NOTICE %s :Added temporary %d min. D-Line [%s]",
71	MyConnect(source_p) ? me.name : ID_or_name(&me, source_p->from),
72	source_p->name, tkline_time/60, aconf->host);
73	ilog(L_TRACE, "%s added temporary %d min. D-Line for [%s] [%s]",
74	source_p->name, tkline_time/60, aconf->host, aconf->reason);
75	log_oper_action(LOG_TEMP_DLINE_TYPE, source_p, "[%s@%s] [%s]\n",
76	aconf->user, aconf->host, aconf->reason);
77	rehashed_klines = 1;
78	}
79
80	/* mo_dline()
81	*
82	* inputs - pointer to server
83	* - pointer to client
84	* - parameter count
85	* - parameter list
86	* output -
87	* side effects - D line is added
88	*
89	*/
90	static void
91	mo_dline(struct Client client_p, struct Client source_p,
92	int parc, char *parv[])
93	{
94	char def_reason[] = "No reason";
95	char dlhost, oper_reason, *reason;
96	const char *creason;
97	const struct Client *target_p = NULL;
98	struct irc_ssaddr daddr;
99	struct ConfItem *conf=NULL;
100	struct AccessItem *aconf=NULL;
101	time_t tkline_time=0;
102	int bits, t;
103	const char *current_date = NULL;
104	time_t cur_time;
105	char hostip[HOSTIPLEN];
106	char buffer[IRCD_BUFSIZE];
107
108	if (!HasOFlag(source_p, OPER_FLAG_K))
109	{
110	sendto_one(source_p, form_str(ERR_NOPRIVS),
111	me.name, source_p->name, "kline");
112	return;
113	}
114
115	if (parse_aline("DLINE", source_p, parc, parv, AWILD, &dlhost,
116	NULL, &tkline_time, NULL, &reason) < 0)
117	return;
118
119	if ((t = parse_netmask(dlhost, NULL, &bits)) == HM_HOST)
120	{
121	if ((target_p = find_chasing(client_p, source_p, dlhost, NULL)) == NULL)
122	return;
123
124	if (!MyConnect(target_p))
125	{
126	sendto_one(source_p,
127	":%s NOTICE %s :Can't DLINE nick on another server",
128	me.name, source_p->name);
129	return;
130	}
131
132	if (IsExemptKline(target_p))
133	{
134	sendto_one(source_p,
135	":%s NOTICE %s :%s is E-lined", me.name,
136	source_p->name, target_p->name);
137	return;
138	}
139
140	getnameinfo((struct sockaddr *)&target_p->localClient->ip,
141	target_p->localClient->ip.ss_len, hostip,
142	sizeof(hostip), NULL, 0, NI_NUMERICHOST);
143	dlhost = hostip;
144	t = parse_netmask(dlhost, NULL, &bits);
145	assert(t == HM_IPV4 \|\| t == HM_IPV6);
146	}
147
148	if (bits < 8)
149	{
150	sendto_one(source_p,
151	":%s NOTICE %s :For safety, bitmasks less than 8 require conf access.",
152	me.name, source_p->name);
153	return;
154	}
155
156	#ifdef IPV6
157	if (t == HM_IPV6)
158	t = AF_INET6;
159	else
160	#endif
161	t = AF_INET;
162
163	parse_netmask(dlhost, &daddr, NULL);
164
165	if ((aconf = find_dline_conf(&daddr, t)) != NULL)
166	{
167	creason = aconf->reason ? aconf->reason : def_reason;
168	if (IsConfExemptKline(aconf))
169	sendto_one(source_p,
170	":%s NOTICE %s :[%s] is (E)d-lined by [%s] - %s",
171	me.name, source_p->name, dlhost, aconf->host, creason);
172	else
173	sendto_one(source_p,
174	":%s NOTICE %s :[%s] already D-lined by [%s] - %s",
175	me.name, source_p->name, dlhost, aconf->host, creason);
176	return;
177	}
178
179	cur_time = CurrentTime;
180	current_date = smalldate(cur_time);
181
182	/* Look for an oper reason */
183	if ((oper_reason = strchr(reason, '\|')) != NULL)
184	*oper_reason++ = '\0';
185
186	if (!valid_comment(source_p, reason, 1))
187	return;
188
189	conf = make_conf_item(DLINE_TYPE);
190	aconf = map_to_conf(conf);
191	DupString(aconf->host, dlhost);
192
193	if (tkline_time != 0)
194	{
195	snprintf(buffer, sizeof(buffer), "Temporary D-line %d min. - %s (%s)",
196	(int)(tkline_time/60), reason, current_date);
197	DupString(aconf->reason, buffer);
198	if (oper_reason != NULL)
199	DupString(aconf->oper_reason, oper_reason);
200	apply_tdline(source_p, conf, current_date, tkline_time);
201	}
202	else
203	{
204	snprintf(buffer, sizeof(buffer), "%s (%s)", reason, current_date);
205	DupString(aconf->reason, buffer);
206	if (oper_reason != NULL)
207	DupString(aconf->oper_reason, oper_reason);
208	add_conf_by_address(CONF_DLINE, aconf);
209	write_conf_line(source_p, conf, current_date, cur_time);
210	}
211
212	rehashed_klines = 1;
213	}
214
215	/* static int remove_tdline_match(const char host, const char user)
216	* Input: An ip to undline.
217	* Output: returns YES on success, NO if no tdline removed.
218	* Side effects: Any matching tdlines are removed.
219	*/
220	static int
221	remove_tdline_match(const char *cidr)
222	{
223	struct AccessItem *td_conf;
224	dlink_node *td_node;
225	struct irc_ssaddr addr, caddr;
226	int nm_t, cnm_t, bits, cbits;
227	nm_t = parse_netmask(cidr, &addr, &bits);
228
229	DLINK_FOREACH(td_node, temporary_dlines.head)
230	{
231	td_conf = map_to_conf(td_node->data);
232	cnm_t = parse_netmask(td_conf->host, &caddr, &cbits);
233
234	if (cnm_t != nm_t)
235	continue;
236
237	if((nm_t==HM_HOST && !irccmp(td_conf->host, cidr)) \|\|
238	(nm_t==HM_IPV4 && bits==cbits && match_ipv4(&addr, &caddr, bits))
239	#ifdef IPV6
240	\|\| (nm_t==HM_IPV6 && bits==cbits && match_ipv6(&addr, &caddr, bits))
241	#endif
242	)
243	{
244	dlinkDelete(td_node, &temporary_dlines);
245	delete_one_address_conf(td_conf->host, td_conf);
246	return 1;
247	}
248	}
249
250	return 0;
251	}
252
253	/*
254	** m_undline
255	** added May 28th 2000 by Toby Verrall <toot@melnet.co.uk>
256	** based totally on m_unkline
257	** added to hybrid-7 7/11/2000 --is
258	**
259	** parv[0] = sender nick
260	** parv[1] = dline to remove
261	*/
262	static void
263	mo_undline(struct Client client_p, struct Client source_p,
264	int parc, char *parv[])
265	{
266	const char *cidr = NULL;
267
268	if (!HasOFlag(source_p, OPER_FLAG_UNKLINE))
269	{
270	sendto_one(source_p, form_str(ERR_NOPRIVS),
271	me.name, source_p->name, "undline");
272	return;
273	}
274
275	cidr = parv[1];
276
277	if (remove_tdline_match(cidr))
278	{
279	sendto_one(source_p,
280	":%s NOTICE %s :Un-Dlined [%s] from temporary D-Lines",
281	me.name, source_p->name, cidr);
282	sendto_realops_flags(UMODE_ALL, L_ALL,
283	"%s has removed the temporary D-Line for: [%s]",
284	get_oper_name(source_p), cidr);
285	ilog(L_NOTICE, "%s removed temporary D-Line for [%s]", source_p->name, cidr);
286	return;
287	}
288
289	if (remove_conf_line(DLINE_TYPE, source_p, cidr, NULL) > 0)
290	{
291	sendto_one(source_p, ":%s NOTICE %s :D-Line for [%s] is removed",
292	me.name, source_p->name, cidr);
293	sendto_realops_flags(UMODE_ALL, L_ALL,
294	"%s has removed the D-Line for: [%s]",
295	get_oper_name(source_p), cidr);
296	ilog(L_NOTICE, "%s removed D-Line for [%s]",
297	get_oper_name(source_p), cidr);
298	}
299	else
300	sendto_one(source_p, ":%s NOTICE %s :No D-Line for [%s] found",
301	me.name, source_p->name, cidr);
302	}
303
304	static struct Message dline_msgtab = {
305	"DLINE", 0, 0, 2, MAXPARA, MFLG_SLOW, 0,
306	{m_unregistered, m_not_oper, rfc1459_command_send_error, m_ignore, mo_dline, m_ignore}
307	};
308
309	static struct Message undline_msgtab = {
310	"UNDLINE", 0, 0, 2, MAXPARA, MFLG_SLOW, 0,
311	{m_unregistered, m_not_oper, rfc1459_command_send_error, m_ignore, mo_undline, m_ignore}
312	};
313
314	static void
315	module_init(void)
316	{
317	mod_add_cmd(&dline_msgtab);
318	mod_add_cmd(&undline_msgtab);
319	}
320
321	static void
322	module_exit(void)
323	{
324	mod_del_cmd(&dline_msgtab);
325	mod_del_cmd(&undline_msgtab);
326	}
327
328	struct module module_entry = {
329	.node = { NULL, NULL, NULL },
330	.name = NULL,
331	.version = "$Revision$",
332	.handle = NULL,
333	.modinit = module_init,
334	.modexit = module_exit,
335	.flags = 0
336	};