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 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, YES))
    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:	1233
Committed:	Thu Sep 22 20:53:07 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:	9278 byte(s)
Log Message:	- replace bunch of ircsprintf with snprintf
#	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 int remove_tdline_match(const char *);
51
52			/* apply_tdline()
53			*
54			* inputs -
55			* output - NONE
56			* side effects - tkline as given is placed
57			*/
58			static void
59			apply_tdline(struct Client source_p, struct ConfItem conf,
60			const char *current_date, int tkline_time)
61			{
62			struct AccessItem *aconf;
63
64			aconf = map_to_conf(conf);
65			aconf->hold = CurrentTime + tkline_time;
66
67			add_temp_line(conf);
68			sendto_realops_flags(UMODE_ALL, L_ALL,
69			"%s added temporary %d min. D-Line for [%s] [%s]",
70			get_oper_name(source_p), tkline_time/60,
71			aconf->host, aconf->reason);
72
73			sendto_one(source_p, ":%s NOTICE %s :Added temporary %d min. D-Line [%s]",
74			MyConnect(source_p) ? me.name : ID_or_name(&me, source_p->from),
75			source_p->name, tkline_time/60, aconf->host);
76			ilog(L_TRACE, "%s added temporary %d min. D-Line for [%s] [%s]",
77			source_p->name, tkline_time/60, aconf->host, aconf->reason);
78			log_oper_action(LOG_TEMP_DLINE_TYPE, source_p, "[%s@%s] [%s]\n",
79			aconf->user, aconf->host, aconf->reason);
80			rehashed_klines = 1;
81			}
82
83			/* mo_dline()
84			*
85			* inputs - pointer to server
86			* - pointer to client
87			* - parameter count
88			* - parameter list
89			* output -
90			* side effects - D line is added
91			*
92			*/
93			static void
94			mo_dline(struct Client client_p, struct Client source_p,
95			int parc, char *parv[])
96			{
97			char def_reason[] = "No reason";
98			char dlhost, oper_reason, *reason;
99			const char *creason;
100			const struct Client *target_p = NULL;
101			struct irc_ssaddr daddr;
102			struct ConfItem *conf=NULL;
103			struct AccessItem *aconf=NULL;
104			time_t tkline_time=0;
105			int bits, t;
106			const char *current_date = NULL;
107			time_t cur_time;
108			char hostip[HOSTIPLEN];
109	michael	1230	char buffer[IRCD_BUFSIZE];
110	michael	1058
111	michael	1219	if (!HasOFlag(source_p, OPER_FLAG_K))
112	michael	1058	{
113			sendto_one(source_p, form_str(ERR_NOPRIVS),
114			me.name, source_p->name, "kline");
115			return;
116			}
117
118			if (parse_aline("DLINE", source_p, parc, parv, AWILD, &dlhost,
119			NULL, &tkline_time, NULL, &reason) < 0)
120			return;
121
122			if ((t = parse_netmask(dlhost, NULL, &bits)) == HM_HOST)
123			{
124			if ((target_p = find_chasing(client_p, source_p, dlhost, NULL)) == NULL)
125			return;
126
127			if (!MyConnect(target_p))
128			{
129			sendto_one(source_p,
130			":%s NOTICE %s :Can't DLINE nick on another server",
131			me.name, source_p->name);
132			return;
133			}
134
135			if (IsExemptKline(target_p))
136			{
137			sendto_one(source_p,
138			":%s NOTICE %s :%s is E-lined", me.name,
139			source_p->name, target_p->name);
140			return;
141			}
142
143	michael	1123	getnameinfo((struct sockaddr *)&target_p->localClient->ip,
144			target_p->localClient->ip.ss_len, hostip,
145			sizeof(hostip), NULL, 0, NI_NUMERICHOST);
146	michael	1058	dlhost = hostip;
147			t = parse_netmask(dlhost, NULL, &bits);
148			assert(t == HM_IPV4 \|\| t == HM_IPV6);
149			}
150
151			if (bits < 8)
152			{
153			sendto_one(source_p,
154			":%s NOTICE %s :For safety, bitmasks less than 8 require conf access.",
155			me.name, source_p->name);
156			return;
157			}
158
159			#ifdef IPV6
160			if (t == HM_IPV6)
161			t = AF_INET6;
162			else
163			#endif
164			t = AF_INET;
165
166			parse_netmask(dlhost, &daddr, NULL);
167
168			if ((aconf = find_dline_conf(&daddr, t)) != NULL)
169			{
170			creason = aconf->reason ? aconf->reason : def_reason;
171			if (IsConfExemptKline(aconf))
172			sendto_one(source_p,
173			":%s NOTICE %s :[%s] is (E)d-lined by [%s] - %s",
174			me.name, source_p->name, dlhost, aconf->host, creason);
175			else
176			sendto_one(source_p,
177			":%s NOTICE %s :[%s] already D-lined by [%s] - %s",
178			me.name, source_p->name, dlhost, aconf->host, creason);
179			return;
180			}
181
182			cur_time = CurrentTime;
183			current_date = smalldate(cur_time);
184
185			/* Look for an oper reason */
186			if ((oper_reason = strchr(reason, '\|')) != NULL)
187			*oper_reason++ = '\0';
188
189			if (!valid_comment(source_p, reason, YES))
190			return;
191
192			conf = make_conf_item(DLINE_TYPE);
193			aconf = map_to_conf(conf);
194			DupString(aconf->host, dlhost);
195
196			if (tkline_time != 0)
197			{
198	michael	1233	snprintf(buffer, sizeof(buffer), "Temporary D-line %d min. - %s (%s)",
199			(int)(tkline_time/60), reason, current_date);
200	michael	1058	DupString(aconf->reason, buffer);
201			if (oper_reason != NULL)
202			DupString(aconf->oper_reason, oper_reason);
203			apply_tdline(source_p, conf, current_date, tkline_time);
204			}
205			else
206			{
207	michael	1233	snprintf(buffer, sizeof(buffer), "%s (%s)", reason, current_date);
208	michael	1058	DupString(aconf->reason, buffer);
209			if (oper_reason != NULL)
210			DupString(aconf->oper_reason, oper_reason);
211			add_conf_by_address(CONF_DLINE, aconf);
212			write_conf_line(source_p, conf, current_date, cur_time);
213			}
214
215			rehashed_klines = 1;
216			}
217
218			/* static int remove_tdline_match(const char host, const char user)
219			* Input: An ip to undline.
220			* Output: returns YES on success, NO if no tdline removed.
221			* Side effects: Any matching tdlines are removed.
222			*/
223			static int
224			remove_tdline_match(const char *cidr)
225			{
226			struct AccessItem *td_conf;
227			dlink_node *td_node;
228			struct irc_ssaddr addr, caddr;
229			int nm_t, cnm_t, bits, cbits;
230			nm_t = parse_netmask(cidr, &addr, &bits);
231
232			DLINK_FOREACH(td_node, temporary_dlines.head)
233			{
234			td_conf = map_to_conf(td_node->data);
235			cnm_t = parse_netmask(td_conf->host, &caddr, &cbits);
236
237			if (cnm_t != nm_t)
238			continue;
239
240			if((nm_t==HM_HOST && !irccmp(td_conf->host, cidr)) \|\|
241			(nm_t==HM_IPV4 && bits==cbits && match_ipv4(&addr, &caddr, bits))
242			#ifdef IPV6
243			\|\| (nm_t==HM_IPV6 && bits==cbits && match_ipv6(&addr, &caddr, bits))
244			#endif
245			)
246			{
247			dlinkDelete(td_node, &temporary_dlines);
248			delete_one_address_conf(td_conf->host, td_conf);
249			return 1;
250			}
251			}
252
253			return 0;
254			}
255
256			/*
257			** m_undline
258			** added May 28th 2000 by Toby Verrall <toot@melnet.co.uk>
259			** based totally on m_unkline
260			** added to hybrid-7 7/11/2000 --is
261			**
262			** parv[0] = sender nick
263			** parv[1] = dline to remove
264			*/
265			static void
266			mo_undline(struct Client client_p, struct Client source_p,
267			int parc, char *parv[])
268			{
269			const char *cidr = NULL;
270
271	michael	1219	if (!HasOFlag(source_p, OPER_FLAG_UNKLINE))
272	michael	1058	{
273			sendto_one(source_p, form_str(ERR_NOPRIVS),
274			me.name, source_p->name, "undline");
275			return;
276			}
277
278			cidr = parv[1];
279
280			if (remove_tdline_match(cidr))
281			{
282			sendto_one(source_p,
283			":%s NOTICE %s :Un-Dlined [%s] from temporary D-Lines",
284			me.name, source_p->name, cidr);
285			sendto_realops_flags(UMODE_ALL, L_ALL,
286			"%s has removed the temporary D-Line for: [%s]",
287			get_oper_name(source_p), cidr);
288			ilog(L_NOTICE, "%s removed temporary D-Line for [%s]", source_p->name, cidr);
289			return;
290			}
291
292			if (remove_conf_line(DLINE_TYPE, source_p, cidr, NULL) > 0)
293			{
294			sendto_one(source_p, ":%s NOTICE %s :D-Line for [%s] is removed",
295			me.name, source_p->name, cidr);
296			sendto_realops_flags(UMODE_ALL, L_ALL,
297			"%s has removed the D-Line for: [%s]",
298			get_oper_name(source_p), cidr);
299			ilog(L_NOTICE, "%s removed D-Line for [%s]",
300			get_oper_name(source_p), cidr);
301			}
302			else
303			sendto_one(source_p, ":%s NOTICE %s :No D-Line for [%s] found",
304			me.name, source_p->name, cidr);
305			}
306	michael	1230
307			static struct Message dline_msgtab = {
308			"DLINE", 0, 0, 2, MAXPARA, MFLG_SLOW, 0,
309			{m_unregistered, m_not_oper, rfc1459_command_send_error, m_ignore, mo_dline, m_ignore}
310			};
311
312			static struct Message undline_msgtab = {
313			"UNDLINE", 0, 0, 2, MAXPARA, MFLG_SLOW, 0,
314			{m_unregistered, m_not_oper, rfc1459_command_send_error, m_ignore, mo_undline, m_ignore}
315			};
316
317			static void
318			module_init(void)
319			{
320			mod_add_cmd(&dline_msgtab);
321			mod_add_cmd(&undline_msgtab);
322			}
323
324			static void
325			module_exit(void)
326			{
327			mod_del_cmd(&dline_msgtab);
328			mod_del_cmd(&undline_msgtab);
329			}
330
331			struct module module_entry = {
332			.node = { NULL, NULL, NULL },
333			.name = NULL,
334			.version = "$Revision$",
335			.handle = NULL,
336			.modinit = module_init,
337			.modexit = module_exit,
338			.flags = 0
339			};