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 "common.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 "handlers.h"
#include "s_serv.h"
#include "msg.h"
#include "s_gline.h"
#include "parse.h"
#include "modules.h"


static void mo_dline(struct Client *, struct Client *, int, char *[]);
static void mo_undline(struct Client *, struct Client *, int, char *[]);

static int remove_tdline_match(const char *);

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

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

void
_modinit(void)
{
  mod_add_cmd(&dline_msgtab);
  mod_add_cmd(&undline_msgtab);
}

void
_moddeinit(void)
{
  mod_del_cmd(&dline_msgtab);
  mod_del_cmd(&undline_msgtab);
}

const char *_version = "$Revision$";

static char buffer[IRCD_BUFSIZE];


/* 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];

  if (!IsOperK(source_p))
  {
    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, YES))
    return;

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

  if (tkline_time != 0)
  {
    ircsprintf(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
  {
    ircsprintf(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 (!IsOperUnkline(source_p))
  {
    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);
}
Revision:	1156
Committed:	Tue Aug 9 20:29:20 2011 UTC (14 years, 11 months ago) by michael
Content type:	text/x-csrc
Original Path:	*ircd-hybrid-8/modules/m_dline.c*
File size:	9161 byte(s)
Log Message:	- create ircd-hybrid-8 "branch"
#	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 "common.h"
30			#include "irc_string.h"
31			#include "sprintf_irc.h"
32			#include "ircd.h"
33			#include "hostmask.h"
34			#include "numeric.h"
35			#include "fdlist.h"
36			#include "s_bsd.h"
37			#include "s_conf.h"
38			#include "s_log.h"
39			#include "s_misc.h"
40			#include "send.h"
41			#include "hash.h"
42			#include "handlers.h"
43			#include "s_serv.h"
44			#include "msg.h"
45			#include "s_gline.h"
46			#include "parse.h"
47			#include "modules.h"
48
49
50			static void mo_dline(struct Client , struct Client , int, char *[]);
51			static void mo_undline(struct Client , struct Client , int, char *[]);
52
53			static int remove_tdline_match(const char *);
54
55			struct Message dline_msgtab = {
56			"DLINE", 0, 0, 2, 0, MFLG_SLOW, 0,
57			{m_unregistered, m_not_oper, rfc1459_command_send_error, m_ignore, mo_dline, m_ignore}
58			};
59
60			struct Message undline_msgtab = {
61			"UNDLINE", 0, 0, 2, 0, MFLG_SLOW, 0,
62			{m_unregistered, m_not_oper, rfc1459_command_send_error, m_ignore, mo_undline, m_ignore}
63			};
64
65			void
66			_modinit(void)
67			{
68			mod_add_cmd(&dline_msgtab);
69			mod_add_cmd(&undline_msgtab);
70			}
71
72			void
73			_moddeinit(void)
74			{
75			mod_del_cmd(&dline_msgtab);
76			mod_del_cmd(&undline_msgtab);
77			}
78
79			const char *_version = "$Revision$";
80
81			static char buffer[IRCD_BUFSIZE];
82
83
84			/* apply_tdline()
85			*
86			* inputs -
87			* output - NONE
88			* side effects - tkline as given is placed
89			*/
90			static void
91			apply_tdline(struct Client source_p, struct ConfItem conf,
92			const char *current_date, int tkline_time)
93			{
94			struct AccessItem *aconf;
95
96			aconf = map_to_conf(conf);
97			aconf->hold = CurrentTime + tkline_time;
98
99			add_temp_line(conf);
100			sendto_realops_flags(UMODE_ALL, L_ALL,
101			"%s added temporary %d min. D-Line for [%s] [%s]",
102			get_oper_name(source_p), tkline_time/60,
103			aconf->host, aconf->reason);
104
105			sendto_one(source_p, ":%s NOTICE %s :Added temporary %d min. D-Line [%s]",
106			MyConnect(source_p) ? me.name : ID_or_name(&me, source_p->from),
107			source_p->name, tkline_time/60, aconf->host);
108			ilog(L_TRACE, "%s added temporary %d min. D-Line for [%s] [%s]",
109			source_p->name, tkline_time/60, aconf->host, aconf->reason);
110			log_oper_action(LOG_TEMP_DLINE_TYPE, source_p, "[%s@%s] [%s]\n",
111			aconf->user, aconf->host, aconf->reason);
112			rehashed_klines = 1;
113			}
114
115			/* mo_dline()
116			*
117			* inputs - pointer to server
118			* - pointer to client
119			* - parameter count
120			* - parameter list
121			* output -
122			* side effects - D line is added
123			*
124			*/
125			static void
126			mo_dline(struct Client client_p, struct Client source_p,
127			int parc, char *parv[])
128			{
129			char def_reason[] = "No reason";
130			char dlhost, oper_reason, *reason;
131			const char *creason;
132			const struct Client *target_p = NULL;
133			struct irc_ssaddr daddr;
134			struct ConfItem *conf=NULL;
135			struct AccessItem *aconf=NULL;
136			time_t tkline_time=0;
137			int bits, t;
138			const char *current_date = NULL;
139			time_t cur_time;
140			char hostip[HOSTIPLEN];
141
142			if (!IsOperK(source_p))
143			{
144			sendto_one(source_p, form_str(ERR_NOPRIVS),
145			me.name, source_p->name, "kline");
146			return;
147			}
148
149			if (parse_aline("DLINE", source_p, parc, parv, AWILD, &dlhost,
150			NULL, &tkline_time, NULL, &reason) < 0)
151			return;
152
153			if ((t = parse_netmask(dlhost, NULL, &bits)) == HM_HOST)
154			{
155			if ((target_p = find_chasing(client_p, source_p, dlhost, NULL)) == NULL)
156			return;
157
158			if (!MyConnect(target_p))
159			{
160			sendto_one(source_p,
161			":%s NOTICE %s :Can't DLINE nick on another server",
162			me.name, source_p->name);
163			return;
164			}
165
166			if (IsExemptKline(target_p))
167			{
168			sendto_one(source_p,
169			":%s NOTICE %s :%s is E-lined", me.name,
170			source_p->name, target_p->name);
171			return;
172			}
173
174	michael	1123	getnameinfo((struct sockaddr *)&target_p->localClient->ip,
175			target_p->localClient->ip.ss_len, hostip,
176			sizeof(hostip), NULL, 0, NI_NUMERICHOST);
177	michael	1058	dlhost = hostip;
178			t = parse_netmask(dlhost, NULL, &bits);
179			assert(t == HM_IPV4 \|\| t == HM_IPV6);
180			}
181
182			if (bits < 8)
183			{
184			sendto_one(source_p,
185			":%s NOTICE %s :For safety, bitmasks less than 8 require conf access.",
186			me.name, source_p->name);
187			return;
188			}
189
190			#ifdef IPV6
191			if (t == HM_IPV6)
192			t = AF_INET6;
193			else
194			#endif
195			t = AF_INET;
196
197			parse_netmask(dlhost, &daddr, NULL);
198
199			if ((aconf = find_dline_conf(&daddr, t)) != NULL)
200			{
201			creason = aconf->reason ? aconf->reason : def_reason;
202			if (IsConfExemptKline(aconf))
203			sendto_one(source_p,
204			":%s NOTICE %s :[%s] is (E)d-lined by [%s] - %s",
205			me.name, source_p->name, dlhost, aconf->host, creason);
206			else
207			sendto_one(source_p,
208			":%s NOTICE %s :[%s] already D-lined by [%s] - %s",
209			me.name, source_p->name, dlhost, aconf->host, creason);
210			return;
211			}
212
213			cur_time = CurrentTime;
214			current_date = smalldate(cur_time);
215
216			/* Look for an oper reason */
217			if ((oper_reason = strchr(reason, '\|')) != NULL)
218			*oper_reason++ = '\0';
219
220			if (!valid_comment(source_p, reason, YES))
221			return;
222
223			conf = make_conf_item(DLINE_TYPE);
224			aconf = map_to_conf(conf);
225			DupString(aconf->host, dlhost);
226
227			if (tkline_time != 0)
228			{
229			ircsprintf(buffer, "Temporary D-line %d min. - %s (%s)",
230			(int)(tkline_time/60), reason, current_date);
231			DupString(aconf->reason, buffer);
232			if (oper_reason != NULL)
233			DupString(aconf->oper_reason, oper_reason);
234			apply_tdline(source_p, conf, current_date, tkline_time);
235			}
236			else
237			{
238			ircsprintf(buffer, "%s (%s)", reason, current_date);
239			DupString(aconf->reason, buffer);
240			if (oper_reason != NULL)
241			DupString(aconf->oper_reason, oper_reason);
242			add_conf_by_address(CONF_DLINE, aconf);
243			write_conf_line(source_p, conf, current_date, cur_time);
244			}
245
246			rehashed_klines = 1;
247			}
248
249			/* static int remove_tdline_match(const char host, const char user)
250			* Input: An ip to undline.
251			* Output: returns YES on success, NO if no tdline removed.
252			* Side effects: Any matching tdlines are removed.
253			*/
254			static int
255			remove_tdline_match(const char *cidr)
256			{
257			struct AccessItem *td_conf;
258			dlink_node *td_node;
259			struct irc_ssaddr addr, caddr;
260			int nm_t, cnm_t, bits, cbits;
261			nm_t = parse_netmask(cidr, &addr, &bits);
262
263			DLINK_FOREACH(td_node, temporary_dlines.head)
264			{
265			td_conf = map_to_conf(td_node->data);
266			cnm_t = parse_netmask(td_conf->host, &caddr, &cbits);
267
268			if (cnm_t != nm_t)
269			continue;
270
271			if((nm_t==HM_HOST && !irccmp(td_conf->host, cidr)) \|\|
272			(nm_t==HM_IPV4 && bits==cbits && match_ipv4(&addr, &caddr, bits))
273			#ifdef IPV6
274			\|\| (nm_t==HM_IPV6 && bits==cbits && match_ipv6(&addr, &caddr, bits))
275			#endif
276			)
277			{
278			dlinkDelete(td_node, &temporary_dlines);
279			delete_one_address_conf(td_conf->host, td_conf);
280			return 1;
281			}
282			}
283
284			return 0;
285			}
286
287			/*
288			** m_undline
289			** added May 28th 2000 by Toby Verrall <toot@melnet.co.uk>
290			** based totally on m_unkline
291			** added to hybrid-7 7/11/2000 --is
292			**
293			** parv[0] = sender nick
294			** parv[1] = dline to remove
295			*/
296			static void
297			mo_undline(struct Client client_p, struct Client source_p,
298			int parc, char *parv[])
299			{
300			const char *cidr = NULL;
301
302			if (!IsOperUnkline(source_p))
303			{
304			sendto_one(source_p, form_str(ERR_NOPRIVS),
305			me.name, source_p->name, "undline");
306			return;
307			}
308
309			cidr = parv[1];
310
311			if (remove_tdline_match(cidr))
312			{
313			sendto_one(source_p,
314			":%s NOTICE %s :Un-Dlined [%s] from temporary D-Lines",
315			me.name, source_p->name, cidr);
316			sendto_realops_flags(UMODE_ALL, L_ALL,
317			"%s has removed the temporary D-Line for: [%s]",
318			get_oper_name(source_p), cidr);
319			ilog(L_NOTICE, "%s removed temporary D-Line for [%s]", source_p->name, cidr);
320			return;
321			}
322
323			if (remove_conf_line(DLINE_TYPE, source_p, cidr, NULL) > 0)
324			{
325			sendto_one(source_p, ":%s NOTICE %s :D-Line for [%s] is removed",
326			me.name, source_p->name, cidr);
327			sendto_realops_flags(UMODE_ALL, L_ALL,
328			"%s has removed the D-Line for: [%s]",
329			get_oper_name(source_p), cidr);
330			ilog(L_NOTICE, "%s removed D-Line for [%s]",
331			get_oper_name(source_p), cidr);
332			}
333			else
334			sendto_one(source_p, ":%s NOTICE %s :No D-Line for [%s] found",
335			me.name, source_p->name, cidr);
336			}