ircd-hybrid-8/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"


/* 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;
}

/* 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 *host)
{
  struct AccessItem *td_conf;
  dlink_node *td_node;
  struct irc_ssaddr addr, caddr;
  int nm_t, cnm_t, bits, cbits;

  nm_t = parse_netmask(host, &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, host)) ||
        (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;
}

/* 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;
}

/*
** 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 *addr = NULL;

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

  addr = parv[1];

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

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

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:	1298
Committed:	Tue Feb 28 18:51:13 2012 UTC (12 years, 1 month ago) by michael
Content type:	text/x-csrc
File size:	9088 byte(s)
Log Message:	- fixed style in some places
#	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			/* apply_tdline()
48			*
49			* inputs -
50			* output - NONE
51			* side effects - tkline as given is placed
52			*/
53			static void
54			apply_tdline(struct Client source_p, struct ConfItem conf,
55			const char *current_date, int tkline_time)
56			{
57			struct AccessItem *aconf;
58
59			aconf = map_to_conf(conf);
60			aconf->hold = CurrentTime + tkline_time;
61
62			add_temp_line(conf);
63			sendto_realops_flags(UMODE_ALL, L_ALL,
64			"%s added temporary %d min. D-Line for [%s] [%s]",
65			get_oper_name(source_p), tkline_time/60,
66			aconf->host, aconf->reason);
67
68			sendto_one(source_p, ":%s NOTICE %s :Added temporary %d min. D-Line [%s]",
69			MyConnect(source_p) ? me.name : ID_or_name(&me, source_p->from),
70			source_p->name, tkline_time/60, aconf->host);
71	michael	1247	ilog(LOG_TYPE_DLINE, "%s added temporary %d min. D-Line for [%s] [%s]",
72	michael	1058	source_p->name, tkline_time/60, aconf->host, aconf->reason);
73	michael	1247
74	michael	1058	rehashed_klines = 1;
75			}
76
77	michael	1298	/* static int remove_tdline_match(const char host, const char user)
78			* Input: An ip to undline.
79			* Output: returns YES on success, NO if no tdline removed.
80			* Side effects: Any matching tdlines are removed.
81			*/
82			static int
83			remove_tdline_match(const char *host)
84			{
85			struct AccessItem *td_conf;
86			dlink_node *td_node;
87			struct irc_ssaddr addr, caddr;
88			int nm_t, cnm_t, bits, cbits;
89
90			nm_t = parse_netmask(host, &addr, &bits);
91
92			DLINK_FOREACH(td_node, temporary_dlines.head)
93			{
94			td_conf = map_to_conf(td_node->data);
95			cnm_t = parse_netmask(td_conf->host, &caddr, &cbits);
96
97			if (cnm_t != nm_t)
98			continue;
99
100			if ((nm_t == HM_HOST && !irccmp(td_conf->host, host)) \|\|
101			(nm_t == HM_IPV4 && bits == cbits && match_ipv4(&addr, &caddr, bits))
102			#ifdef IPV6
103			\|\| (nm_t == HM_IPV6 && bits == cbits && match_ipv6(&addr, &caddr, bits))
104			#endif
105			)
106			{
107			dlinkDelete(td_node, &temporary_dlines);
108			delete_one_address_conf(td_conf->host, td_conf);
109			return 1;
110			}
111			}
112
113			return 0;
114			}
115
116	michael	1058	/* mo_dline()
117			*
118			* inputs - pointer to server
119			* - pointer to client
120			* - parameter count
121			* - parameter list
122			* output -
123			* side effects - D line is added
124			*
125			*/
126			static void
127			mo_dline(struct Client client_p, struct Client source_p,
128			int parc, char *parv[])
129			{
130			char def_reason[] = "No reason";
131			char dlhost, oper_reason, *reason;
132			const char *creason;
133			const struct Client *target_p = NULL;
134			struct irc_ssaddr daddr;
135			struct ConfItem *conf=NULL;
136			struct AccessItem *aconf=NULL;
137			time_t tkline_time=0;
138			int bits, t;
139			const char *current_date = NULL;
140			time_t cur_time;
141			char hostip[HOSTIPLEN];
142	michael	1230	char buffer[IRCD_BUFSIZE];
143	michael	1058
144	michael	1219	if (!HasOFlag(source_p, OPER_FLAG_K))
145	michael	1058	{
146			sendto_one(source_p, form_str(ERR_NOPRIVS),
147			me.name, source_p->name, "kline");
148			return;
149			}
150
151			if (parse_aline("DLINE", source_p, parc, parv, AWILD, &dlhost,
152			NULL, &tkline_time, NULL, &reason) < 0)
153			return;
154
155			if ((t = parse_netmask(dlhost, NULL, &bits)) == HM_HOST)
156			{
157			if ((target_p = find_chasing(client_p, source_p, dlhost, NULL)) == NULL)
158			return;
159
160			if (!MyConnect(target_p))
161			{
162			sendto_one(source_p,
163			":%s NOTICE %s :Can't DLINE nick on another server",
164			me.name, source_p->name);
165			return;
166			}
167
168			if (IsExemptKline(target_p))
169			{
170			sendto_one(source_p,
171			":%s NOTICE %s :%s is E-lined", me.name,
172			source_p->name, target_p->name);
173			return;
174			}
175
176	michael	1123	getnameinfo((struct sockaddr *)&target_p->localClient->ip,
177			target_p->localClient->ip.ss_len, hostip,
178			sizeof(hostip), NULL, 0, NI_NUMERICHOST);
179	michael	1058	dlhost = hostip;
180			t = parse_netmask(dlhost, NULL, &bits);
181			assert(t == HM_IPV4 \|\| t == HM_IPV6);
182			}
183
184			if (bits < 8)
185			{
186			sendto_one(source_p,
187			":%s NOTICE %s :For safety, bitmasks less than 8 require conf access.",
188			me.name, source_p->name);
189			return;
190			}
191
192			#ifdef IPV6
193			if (t == HM_IPV6)
194			t = AF_INET6;
195			else
196			#endif
197			t = AF_INET;
198
199			parse_netmask(dlhost, &daddr, NULL);
200
201			if ((aconf = find_dline_conf(&daddr, t)) != NULL)
202			{
203			creason = aconf->reason ? aconf->reason : def_reason;
204			if (IsConfExemptKline(aconf))
205			sendto_one(source_p,
206			":%s NOTICE %s :[%s] is (E)d-lined by [%s] - %s",
207			me.name, source_p->name, dlhost, aconf->host, creason);
208			else
209			sendto_one(source_p,
210			":%s NOTICE %s :[%s] already D-lined by [%s] - %s",
211			me.name, source_p->name, dlhost, aconf->host, creason);
212			return;
213			}
214
215			cur_time = CurrentTime;
216			current_date = smalldate(cur_time);
217
218			/* Look for an oper reason */
219			if ((oper_reason = strchr(reason, '\|')) != NULL)
220			*oper_reason++ = '\0';
221
222	michael	1243	if (!valid_comment(source_p, reason, 1))
223	michael	1058	return;
224
225			conf = make_conf_item(DLINE_TYPE);
226			aconf = map_to_conf(conf);
227			DupString(aconf->host, dlhost);
228
229			if (tkline_time != 0)
230			{
231	michael	1233	snprintf(buffer, sizeof(buffer), "Temporary D-line %d min. - %s (%s)",
232			(int)(tkline_time/60), reason, current_date);
233	michael	1058	DupString(aconf->reason, buffer);
234			if (oper_reason != NULL)
235			DupString(aconf->oper_reason, oper_reason);
236			apply_tdline(source_p, conf, current_date, tkline_time);
237			}
238			else
239			{
240	michael	1233	snprintf(buffer, sizeof(buffer), "%s (%s)", reason, current_date);
241	michael	1058	DupString(aconf->reason, buffer);
242			if (oper_reason != NULL)
243			DupString(aconf->oper_reason, oper_reason);
244			add_conf_by_address(CONF_DLINE, aconf);
245			write_conf_line(source_p, conf, current_date, cur_time);
246			}
247
248			rehashed_klines = 1;
249			}
250
251			/*
252			** m_undline
253			** added May 28th 2000 by Toby Verrall <toot@melnet.co.uk>
254			** based totally on m_unkline
255			** added to hybrid-7 7/11/2000 --is
256			**
257			** parv[0] = sender nick
258			** parv[1] = dline to remove
259			*/
260			static void
261			mo_undline(struct Client client_p, struct Client source_p,
262			int parc, char *parv[])
263			{
264	michael	1298	const char *addr = NULL;
265	michael	1058
266	michael	1219	if (!HasOFlag(source_p, OPER_FLAG_UNKLINE))
267	michael	1058	{
268			sendto_one(source_p, form_str(ERR_NOPRIVS),
269			me.name, source_p->name, "undline");
270			return;
271			}
272
273	michael	1298	addr = parv[1];
274	michael	1058
275	michael	1298	if (remove_tdline_match(addr))
276	michael	1058	{
277			sendto_one(source_p,
278			":%s NOTICE %s :Un-Dlined [%s] from temporary D-Lines",
279	michael	1298	me.name, source_p->name, addr);
280	michael	1058	sendto_realops_flags(UMODE_ALL, L_ALL,
281			"%s has removed the temporary D-Line for: [%s]",
282	michael	1298	get_oper_name(source_p), addr);
283			ilog(LOG_TYPE_DLINE, "%s removed temporary D-Line for [%s]", source_p->name, addr);
284	michael	1058	return;
285			}
286
287	michael	1298	if (remove_conf_line(DLINE_TYPE, source_p, addr, NULL) > 0)
288	michael	1058	{
289			sendto_one(source_p, ":%s NOTICE %s :D-Line for [%s] is removed",
290	michael	1298	me.name, source_p->name, addr);
291	michael	1058	sendto_realops_flags(UMODE_ALL, L_ALL,
292			"%s has removed the D-Line for: [%s]",
293	michael	1298	get_oper_name(source_p), addr);
294	michael	1247	ilog(LOG_TYPE_DLINE, "%s removed D-Line for [%s]",
295	michael	1298	get_oper_name(source_p), addr);
296	michael	1058	}
297			else
298			sendto_one(source_p, ":%s NOTICE %s :No D-Line for [%s] found",
299	michael	1298	me.name, source_p->name, addr);
300	michael	1058	}
301	michael	1230
302			static struct Message dline_msgtab = {
303			"DLINE", 0, 0, 2, MAXPARA, MFLG_SLOW, 0,
304			{m_unregistered, m_not_oper, rfc1459_command_send_error, m_ignore, mo_dline, m_ignore}
305			};
306
307			static struct Message undline_msgtab = {
308			"UNDLINE", 0, 0, 2, MAXPARA, MFLG_SLOW, 0,
309			{m_unregistered, m_not_oper, rfc1459_command_send_error, m_ignore, mo_undline, m_ignore}
310			};
311
312			static void
313			module_init(void)
314			{
315			mod_add_cmd(&dline_msgtab);
316			mod_add_cmd(&undline_msgtab);
317			}
318
319			static void
320			module_exit(void)
321			{
322			mod_del_cmd(&dline_msgtab);
323			mod_del_cmd(&undline_msgtab);
324			}
325
326			struct module module_entry = {
327			.node = { NULL, NULL, NULL },
328			.name = NULL,
329			.version = "$Revision$",
330			.handle = NULL,
331			.modinit = module_init,
332			.modexit = module_exit,
333			.flags = 0
334			};