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(LOG_TYPE_DLINE, "%s added temporary %d min. D-Line for [%s] [%s]",
       source_p->name, tkline_time/60, 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(LOG_TYPE_DLINE, "%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(LOG_TYPE_DLINE, "%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:	1247
Committed:	Sat Oct 1 07:54:24 2011 UTC (14 years, 9 months ago) by michael
Content type:	text/x-csrc
Original Path:	*ircd-hybrid-8/modules/m_dline.c*
File size:	9124 byte(s)
Log Message:	- Rewrite and cleanup half-broken logging subsystem. Logfile rotating is not working yet
#	User	Rev	Content
1	michael	1058	/*
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	michael	1247	ilog(LOG_TYPE_DLINE, "%s added temporary %d min. D-Line for [%s] [%s]",
74	michael	1058	source_p->name, tkline_time/60, aconf->host, aconf->reason);
75	michael	1247
76	michael	1058	rehashed_klines = 1;
77			}
78
79			/* mo_dline()
80			*
81			* inputs - pointer to server
82			* - pointer to client
83			* - parameter count
84			* - parameter list
85			* output -
86			* side effects - D line is added
87			*
88			*/
89			static void
90			mo_dline(struct Client client_p, struct Client source_p,
91			int parc, char *parv[])
92			{
93			char def_reason[] = "No reason";
94			char dlhost, oper_reason, *reason;
95			const char *creason;
96			const struct Client *target_p = NULL;
97			struct irc_ssaddr daddr;
98			struct ConfItem *conf=NULL;
99			struct AccessItem *aconf=NULL;
100			time_t tkline_time=0;
101			int bits, t;
102			const char *current_date = NULL;
103			time_t cur_time;
104			char hostip[HOSTIPLEN];
105	michael	1230	char buffer[IRCD_BUFSIZE];
106	michael	1058
107	michael	1219	if (!HasOFlag(source_p, OPER_FLAG_K))
108	michael	1058	{
109			sendto_one(source_p, form_str(ERR_NOPRIVS),
110			me.name, source_p->name, "kline");
111			return;
112			}
113
114			if (parse_aline("DLINE", source_p, parc, parv, AWILD, &dlhost,
115			NULL, &tkline_time, NULL, &reason) < 0)
116			return;
117
118			if ((t = parse_netmask(dlhost, NULL, &bits)) == HM_HOST)
119			{
120			if ((target_p = find_chasing(client_p, source_p, dlhost, NULL)) == NULL)
121			return;
122
123			if (!MyConnect(target_p))
124			{
125			sendto_one(source_p,
126			":%s NOTICE %s :Can't DLINE nick on another server",
127			me.name, source_p->name);
128			return;
129			}
130
131			if (IsExemptKline(target_p))
132			{
133			sendto_one(source_p,
134			":%s NOTICE %s :%s is E-lined", me.name,
135			source_p->name, target_p->name);
136			return;
137			}
138
139	michael	1123	getnameinfo((struct sockaddr *)&target_p->localClient->ip,
140			target_p->localClient->ip.ss_len, hostip,
141			sizeof(hostip), NULL, 0, NI_NUMERICHOST);
142	michael	1058	dlhost = hostip;
143			t = parse_netmask(dlhost, NULL, &bits);
144			assert(t == HM_IPV4 \|\| t == HM_IPV6);
145			}
146
147			if (bits < 8)
148			{
149			sendto_one(source_p,
150			":%s NOTICE %s :For safety, bitmasks less than 8 require conf access.",
151			me.name, source_p->name);
152			return;
153			}
154
155			#ifdef IPV6
156			if (t == HM_IPV6)
157			t = AF_INET6;
158			else
159			#endif
160			t = AF_INET;
161
162			parse_netmask(dlhost, &daddr, NULL);
163
164			if ((aconf = find_dline_conf(&daddr, t)) != NULL)
165			{
166			creason = aconf->reason ? aconf->reason : def_reason;
167			if (IsConfExemptKline(aconf))
168			sendto_one(source_p,
169			":%s NOTICE %s :[%s] is (E)d-lined by [%s] - %s",
170			me.name, source_p->name, dlhost, aconf->host, creason);
171			else
172			sendto_one(source_p,
173			":%s NOTICE %s :[%s] already D-lined by [%s] - %s",
174			me.name, source_p->name, dlhost, aconf->host, creason);
175			return;
176			}
177
178			cur_time = CurrentTime;
179			current_date = smalldate(cur_time);
180
181			/* Look for an oper reason */
182			if ((oper_reason = strchr(reason, '\|')) != NULL)
183			*oper_reason++ = '\0';
184
185	michael	1243	if (!valid_comment(source_p, reason, 1))
186	michael	1058	return;
187
188			conf = make_conf_item(DLINE_TYPE);
189			aconf = map_to_conf(conf);
190			DupString(aconf->host, dlhost);
191
192			if (tkline_time != 0)
193			{
194	michael	1233	snprintf(buffer, sizeof(buffer), "Temporary D-line %d min. - %s (%s)",
195			(int)(tkline_time/60), reason, current_date);
196	michael	1058	DupString(aconf->reason, buffer);
197			if (oper_reason != NULL)
198			DupString(aconf->oper_reason, oper_reason);
199			apply_tdline(source_p, conf, current_date, tkline_time);
200			}
201			else
202			{
203	michael	1233	snprintf(buffer, sizeof(buffer), "%s (%s)", reason, current_date);
204	michael	1058	DupString(aconf->reason, buffer);
205			if (oper_reason != NULL)
206			DupString(aconf->oper_reason, oper_reason);
207			add_conf_by_address(CONF_DLINE, aconf);
208			write_conf_line(source_p, conf, current_date, cur_time);
209			}
210
211			rehashed_klines = 1;
212			}
213
214			/* static int remove_tdline_match(const char host, const char user)
215			* Input: An ip to undline.
216			* Output: returns YES on success, NO if no tdline removed.
217			* Side effects: Any matching tdlines are removed.
218			*/
219			static int
220			remove_tdline_match(const char *cidr)
221			{
222			struct AccessItem *td_conf;
223			dlink_node *td_node;
224			struct irc_ssaddr addr, caddr;
225			int nm_t, cnm_t, bits, cbits;
226			nm_t = parse_netmask(cidr, &addr, &bits);
227
228			DLINK_FOREACH(td_node, temporary_dlines.head)
229			{
230			td_conf = map_to_conf(td_node->data);
231			cnm_t = parse_netmask(td_conf->host, &caddr, &cbits);
232
233			if (cnm_t != nm_t)
234			continue;
235
236			if((nm_t==HM_HOST && !irccmp(td_conf->host, cidr)) \|\|
237			(nm_t==HM_IPV4 && bits==cbits && match_ipv4(&addr, &caddr, bits))
238			#ifdef IPV6
239			\|\| (nm_t==HM_IPV6 && bits==cbits && match_ipv6(&addr, &caddr, bits))
240			#endif
241			)
242			{
243			dlinkDelete(td_node, &temporary_dlines);
244			delete_one_address_conf(td_conf->host, td_conf);
245			return 1;
246			}
247			}
248
249			return 0;
250			}
251
252			/*
253			** m_undline
254			** added May 28th 2000 by Toby Verrall <toot@melnet.co.uk>
255			** based totally on m_unkline
256			** added to hybrid-7 7/11/2000 --is
257			**
258			** parv[0] = sender nick
259			** parv[1] = dline to remove
260			*/
261			static void
262			mo_undline(struct Client client_p, struct Client source_p,
263			int parc, char *parv[])
264			{
265			const char *cidr = NULL;
266
267	michael	1219	if (!HasOFlag(source_p, OPER_FLAG_UNKLINE))
268	michael	1058	{
269			sendto_one(source_p, form_str(ERR_NOPRIVS),
270			me.name, source_p->name, "undline");
271			return;
272			}
273
274			cidr = parv[1];
275
276			if (remove_tdline_match(cidr))
277			{
278			sendto_one(source_p,
279			":%s NOTICE %s :Un-Dlined [%s] from temporary D-Lines",
280			me.name, source_p->name, cidr);
281			sendto_realops_flags(UMODE_ALL, L_ALL,
282			"%s has removed the temporary D-Line for: [%s]",
283			get_oper_name(source_p), cidr);
284	michael	1247	ilog(LOG_TYPE_DLINE, "%s removed temporary D-Line for [%s]", source_p->name, cidr);
285	michael	1058	return;
286			}
287
288			if (remove_conf_line(DLINE_TYPE, source_p, cidr, NULL) > 0)
289			{
290			sendto_one(source_p, ":%s NOTICE %s :D-Line for [%s] is removed",
291			me.name, source_p->name, cidr);
292			sendto_realops_flags(UMODE_ALL, L_ALL,
293			"%s has removed the D-Line for: [%s]",
294			get_oper_name(source_p), cidr);
295	michael	1247	ilog(LOG_TYPE_DLINE, "%s removed D-Line for [%s]",
296	michael	1058	get_oper_name(source_p), cidr);
297			}
298			else
299			sendto_one(source_p, ":%s NOTICE %s :No D-Line for [%s] found",
300			me.name, source_p->name, cidr);
301			}
302	michael	1230
303			static struct Message dline_msgtab = {
304			"DLINE", 0, 0, 2, MAXPARA, MFLG_SLOW, 0,
305			{m_unregistered, m_not_oper, rfc1459_command_send_error, m_ignore, mo_dline, m_ignore}
306			};
307
308			static struct Message undline_msgtab = {
309			"UNDLINE", 0, 0, 2, MAXPARA, MFLG_SLOW, 0,
310			{m_unregistered, m_not_oper, rfc1459_command_send_error, m_ignore, mo_undline, m_ignore}
311			};
312
313			static void
314			module_init(void)
315			{
316			mod_add_cmd(&dline_msgtab);
317			mod_add_cmd(&undline_msgtab);
318			}
319
320			static void
321			module_exit(void)
322			{
323			mod_del_cmd(&dline_msgtab);
324			mod_del_cmd(&undline_msgtab);
325			}
326
327			struct module module_entry = {
328			.node = { NULL, NULL, NULL },
329			.name = NULL,
330			.version = "$Revision$",
331			.handle = NULL,
332			.modinit = module_init,
333			.modexit = module_exit,
334			.flags = 0
335			};