trunk/modules/m_kline.c

/*
 *  ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
 *  m_kline.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 "ircd.h"
#include "conf.h"
#include "hostmask.h"
#include "numeric.h"
#include "fdlist.h"
#include "s_bsd.h"
#include "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"
#include "conf_db.h"
#include "memory.h"

static int already_placed_kline(struct Client *, const char *, const char *, int);
static void m_kline_add_kline(struct Client *, struct MaskItem *, time_t);

static char buffer[IRCD_BUFSIZE];
static int remove_kline_match(const char *, const char *);


/* mo_kline()
 *
 * inputs       - pointer to server
 *              - pointer to client
 *              - parameter count
 *              - parameter list
 * output       -
 * side effects - k line is added
 */
static void
mo_kline(struct Client *client_p, struct Client *source_p,
         int parc, char *parv[])
{
  char *reason = NULL;
  char *user = NULL;
  char *host = NULL;
  const char *current_date;
  char *target_server = NULL;
  struct MaskItem *conf;
  time_t tkline_time = 0;
  time_t cur_time;

  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("KLINE", source_p, parc, parv,
                  AWILD, &user, &host, &tkline_time, &target_server, &reason) < 0)
    return;

  if (target_server != NULL)
  {
    sendto_match_servs(source_p, target_server, CAP_KLN, "KLINE %s %lu %s %s :%s",
                       target_server, (unsigned long)tkline_time,
                       user, host, reason);

    /* Allow ON to apply local kline as well if it matches */
    if (match(target_server, me.name))
      return;
  }
  else
    cluster_a_line(source_p, "KLINE", CAP_KLN, SHARED_KLINE,
                   "%d %s %s :%s", tkline_time, user, host, reason);

  if (already_placed_kline(source_p, user, host, 1))
    return;

  cur_time = CurrentTime;
  current_date = smalldate(cur_time);
  conf = conf_make(CONF_KLINE);

  conf->host = xstrdup(host);
  conf->user = xstrdup(user);

  if (tkline_time != 0)
    snprintf(buffer, sizeof(buffer), "Temporary K-line %d min. - %s (%s)",
             (int)(tkline_time/60), reason, current_date);
  else
    snprintf(buffer, sizeof(buffer), "%s (%s)", reason, current_date);

  conf->reason = xstrdup(buffer);
  m_kline_add_kline(source_p, conf, tkline_time);
}

/* me_kline - handle remote kline. no propagation */
static void
me_kline(struct Client *client_p, struct Client *source_p,
         int parc, char *parv[])
{
  struct MaskItem *conf = NULL;
  int tkline_time = 0;
  const char* current_date;
  time_t cur_time;
  char *kuser, *khost, *kreason;

  if (parc != 6 || EmptyString(parv[5]))
    return;

  if (match(parv[1], me.name))
    return;

  tkline_time = valid_tkline(parv[2], TK_SECONDS);
  kuser = parv[3];
  khost = parv[4];
  kreason = parv[5];

  cur_time = CurrentTime;
  current_date = smalldate(cur_time);

  if (HasFlag(source_p, FLAGS_SERVICE) || find_matching_name_conf(CONF_ULINE, source_p->servptr->name,
                              source_p->username, source_p->host,
                              SHARED_KLINE))
  {
    if (!IsClient(source_p) ||
        already_placed_kline(source_p, kuser, khost, 1))
      return;

    conf = conf_make(CONF_KLINE);
    conf->host = xstrdup(khost);
    conf->user = xstrdup(kuser);

    if (tkline_time != 0)
      snprintf(buffer, sizeof(buffer), "Temporary K-line %d min. - %s (%s)",
               (int)(tkline_time/60), kreason, current_date);
    else
      snprintf(buffer, sizeof(buffer), "%s (%s)", kreason, current_date);

    conf->reason = xstrdup(buffer);
    m_kline_add_kline(source_p, conf, tkline_time);
  }
}

static void
ms_kline(struct Client *client_p, struct Client *source_p,
         int parc, char *parv[])
{
  if (parc != 6 || EmptyString(parv[5]))
    return;

  /* parv[0]  parv[1]        parv[2]      parv[3]  parv[4]  parv[5] */
  /* oper     target_server  tkline_time  user     host     reason */
  sendto_match_servs(source_p, parv[1], CAP_KLN,
                     "KLINE %s %s %s %s :%s",
                     parv[1], parv[2], parv[3], parv[4], parv[5]);

  me_kline(client_p, source_p, parc, parv);
}

/* apply_tkline()
 *
 * inputs       -
 * output       - NONE
 * side effects - tkline as given is placed
 */
static void
m_kline_add_kline(struct Client *source_p, struct MaskItem *conf,
                  time_t tkline_time)
{
  if (tkline_time)
  {
    conf->until = CurrentTime + tkline_time;
    sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
                         "%s added temporary %d min. K-Line for [%s@%s] [%s]",
                         get_oper_name(source_p), tkline_time/60,
                         conf->user, conf->host,
                         conf->reason);
    sendto_one(source_p, ":%s NOTICE %s :Added temporary %d min. K-Line [%s@%s]",
               MyConnect(source_p) ? me.name : ID_or_name(&me, source_p->from),
               source_p->name, tkline_time/60, conf->user, conf->host);
    ilog(LOG_TYPE_KLINE, "%s added temporary %d min. K-Line for [%s@%s] [%s]",
         get_oper_name(source_p), tkline_time/60,
         conf->user, conf->host, conf->reason);
  }
  else
  {
    sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
                         "%s added K-Line for [%s@%s] [%s]",
                         get_oper_name(source_p),
                         conf->user, conf->host, conf->reason);
    sendto_one(source_p, ":%s NOTICE %s :Added K-Line [%s@%s]",
               MyConnect(source_p) ? me.name : ID_or_name(&me, source_p->from),
                 source_p->name, conf->user, conf->host);
    ilog(LOG_TYPE_KLINE, "%s added K-Line for [%s@%s] [%s]",
         get_oper_name(source_p), conf->user, conf->host, conf->reason);
  }

  conf->setat = CurrentTime;
  SetConfDatabase(conf);

  add_conf_by_address(CONF_KLINE, conf);
  rehashed_klines = 1;
}

/* already_placed_kline()
 * inputs       - user to complain to, username & host to check for
 * outputs      - returns 1 on existing K-line, 0 if doesn't exist
 * side effects - notifies source_p if the K-line already exists
 */
/*
 * Note: This currently works if the new K-line is a special case of an
 *       existing K-line, but not the other way round. To do that we would
 *       have to walk the hash and check every existing K-line. -A1kmm.
 */
static int
already_placed_kline(struct Client *source_p, const char *luser, const char *lhost, int warn)
{
  const char *reason;
  struct irc_ssaddr iphost, *piphost;
  struct MaskItem *conf = NULL;
  int t = 0;
  int aftype = 0;

  if ((t = parse_netmask(lhost, &iphost, NULL)) != HM_HOST)
  {
#ifdef IPV6
    if (t == HM_IPV6)
      aftype = AF_INET6;
    else
#endif
      aftype = AF_INET;
    piphost = &iphost;
  }
  else
    piphost = NULL;

  if ((conf = find_conf_by_address(lhost, piphost, CONF_KLINE, aftype, luser, NULL, 0)))
  {
    if (warn)
    {
      reason = conf->reason ? conf->reason : CONF_NOREASON;
      sendto_one(source_p,
                 ":%s NOTICE %s :[%s@%s] already K-Lined by [%s@%s] - %s",
                 me.name, source_p->name, luser, lhost, conf->user,
                 conf->host, reason);
    }

    return 1;
  }

  return 0;
}

/*
** mo_unkline
** Added Aug 31, 1997 
** common (Keith Fralick) fralick@gate.net
**
**      parv[0] = sender
**      parv[1] = address to remove
*
*
*/
static void
mo_unkline(struct Client *client_p,struct Client *source_p,
           int parc, char *parv[])
{
  char *target_server = NULL;
  char *user, *host;

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

  if (EmptyString(parv[1]))
  {
    sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
               me.name, source_p->name, "UNKLINE");
    return;
  }

  if (parse_aline("UNKLINE", source_p, parc, parv, 0, &user,
                  &host, NULL, &target_server, NULL) < 0)
    return;

  if (target_server != NULL)
  {
     sendto_match_servs(source_p, target_server, CAP_UNKLN,
                        "UNKLINE %s %s %s",
                        target_server, user, host);

    /* Allow ON to apply local unkline as well if it matches */
    if (match(target_server, me.name))
      return;
  }
  else
    cluster_a_line(source_p, "UNKLINE", CAP_UNKLN, SHARED_UNKLINE,
                   "%s %s", user, host);

  if (remove_kline_match(host, user))
  {
    sendto_one(source_p,
               ":%s NOTICE %s :K-Line for [%s@%s] is removed",
               me.name, source_p->name, user, host);
    sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
                         "%s has removed the K-Line for: [%s@%s]",
                         get_oper_name(source_p), user, host);
    ilog(LOG_TYPE_KLINE, "%s removed K-Line for [%s@%s]",
         get_oper_name(source_p), user, host);
  }
  else
    sendto_one(source_p, ":%s NOTICE %s :No K-Line for [%s@%s] found", 
               me.name, source_p->name, user, host);
}

/* me_unkline()
 *
 * inputs       - server
 *              - client
 *              - parc
 *              - parv
 * outputs      - none
 * side effects - if server is authorized, kline is removed
 *                does not propagate message
 */
static void
me_unkline(struct Client *client_p, struct Client *source_p,
           int parc, char *parv[])
{
  const char *kuser, *khost;

  if (parc != 4)
    return;

  kuser = parv[2];
  khost = parv[3];

  if (!IsClient(source_p) || match(parv[1], me.name))
    return;

  if (HasFlag(source_p, FLAGS_SERVICE) || find_matching_name_conf(CONF_ULINE,
                                   source_p->servptr->name,
                                   source_p->username, source_p->host,
                                   SHARED_UNKLINE))
  {
    if (remove_kline_match(khost, kuser))
    {
      sendto_one(source_p,
                 ":%s NOTICE %s :K-Line for [%s@%s] is removed",
                 me.name, source_p->name, kuser, khost);
      sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
                           "%s has removed the K-Line for: [%s@%s]",
                           get_oper_name(source_p), kuser, khost);
      ilog(LOG_TYPE_KLINE, "%s removed K-Line for [%s@%s]",
           get_oper_name(source_p), kuser, khost);
    }
    else
      sendto_one(source_p, ":%s NOTICE %s :No K-Line for [%s@%s] found",
                 me.name, source_p->name, kuser, khost);
  }
}

/* ms_unkline - propagates and handles a remote unkline message */
static void
ms_unkline(struct Client *client_p, struct Client *source_p,
           int parc, char *parv[])
{
  if (parc != 4)
    return;

  sendto_match_servs(source_p, parv[1], CAP_UNKLN,
                     "UNKLINE %s %s %s",
                     parv[1], parv[2], parv[3]);

  me_unkline(client_p, source_p, parc, parv);
}

/* static int remove_tkline_match(const char *host, const char *user)
 * Input: A hostname, a username to unkline.
 * Output: returns YES on success, NO if no tkline removed.
 * Side effects: Any matching tklines are removed.
 */
static int
remove_kline_match(const char *host, const char *user)
{
  struct irc_ssaddr iphost, *piphost;
  struct MaskItem *conf;
  int t = 0;
  int aftype = 0;

  if ((t = parse_netmask(host, &iphost, NULL)) != HM_HOST)
  {
#ifdef IPV6
    if (t == HM_IPV6)
      aftype = AF_INET6;
    else
#endif
      aftype = AF_INET;
    piphost = &iphost;
  }
  else
    piphost = NULL;

  if ((conf = find_conf_by_address(host, piphost, CONF_KLINE, aftype, user, NULL, 0)))
  {
    if (IsConfDatabase(conf))
    {
      delete_one_address_conf(host, conf);
      return 1;
    }
  }

  return 0;
}

static struct Message kline_msgtab = {
  "KLINE", 0, 0, 2, MAXPARA, MFLG_SLOW, 0,
   {m_unregistered, m_not_oper, ms_kline, me_kline, mo_kline, m_ignore}
};

static struct Message unkline_msgtab = {
  "UNKLINE", 0, 0, 2, MAXPARA, MFLG_SLOW, 0,
   {m_unregistered, m_not_oper, ms_unkline, me_unkline, mo_unkline, m_ignore}
};

static void
module_init(void)
{
  mod_add_cmd(&kline_msgtab);
  mod_add_cmd(&unkline_msgtab);
  add_capability("KLN", CAP_KLN, 1);
  add_capability("UNKLN", CAP_UNKLN, 1);
}

static void
module_exit(void)
{
  mod_del_cmd(&kline_msgtab);
  mod_del_cmd(&unkline_msgtab);
  delete_capability("UNKLN");
  delete_capability("KLN");
}

struct module module_entry = {
  .node    = { NULL, NULL, NULL },
  .name    = NULL,
  .version = "$Revision$",
  .handle  = NULL,
  .modinit = module_init,
  .modexit = module_exit,
  .flags   = 0
};
Revision:	2804
Committed:	Sun Jan 12 16:54:01 2014 UTC (12 years, 6 months ago) by michael
Content type:	text/x-csrc
File size:	13420 byte(s)
Log Message:	- m_kline.c:mo_kline(). if a target server exists, use sendto_match_servs() instead of sendto_server()
#	User	Rev	Content
1	adx	30	/*
2			* ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
3			* m_kline.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	knight	31	* $Id$
23	adx	30	*/
24
25			#include "stdinc.h"
26	michael	1011	#include "list.h"
27	adx	30	#include "channel.h"
28			#include "client.h"
29			#include "irc_string.h"
30			#include "ircd.h"
31	michael	1632	#include "conf.h"
32	adx	30	#include "hostmask.h"
33			#include "numeric.h"
34			#include "fdlist.h"
35			#include "s_bsd.h"
36	michael	1309	#include "log.h"
37	adx	30	#include "s_misc.h"
38			#include "send.h"
39			#include "hash.h"
40			#include "s_serv.h"
41			#include "s_gline.h"
42			#include "parse.h"
43			#include "modules.h"
44	michael	1622	#include "conf_db.h"
45	michael	1666	#include "memory.h"
46	adx	30
47	michael	1058	static int already_placed_kline(struct Client , const char , const char *, int);
48	michael	1632	static void m_kline_add_kline(struct Client , struct MaskItem , time_t);
49	michael	1058
50			static char buffer[IRCD_BUFSIZE];
51	michael	1622	static int remove_kline_match(const char , const char );
52	adx	30
53
54			/* mo_kline()
55			*
56			* inputs - pointer to server
57			* - pointer to client
58			* - parameter count
59			* - parameter list
60			* output -
61			* side effects - k line is added
62			*/
63			static void
64			mo_kline(struct Client client_p, struct Client source_p,
65	michael	1298	int parc, char *parv[])
66	adx	30	{
67			char *reason = NULL;
68			char *user = NULL;
69			char *host = NULL;
70			const char *current_date;
71			char *target_server = NULL;
72	michael	1632	struct MaskItem *conf;
73	adx	30	time_t tkline_time = 0;
74			time_t cur_time;
75
76	michael	1219	if (!HasOFlag(source_p, OPER_FLAG_K))
77	adx	30	{
78	michael	1834	sendto_one(source_p, form_str(ERR_NOPRIVS),
79	adx	30	me.name, source_p->name, "kline");
80			return;
81			}
82
83			if (parse_aline("KLINE", source_p, parc, parv,
84			AWILD, &user, &host, &tkline_time, &target_server, &reason) < 0)
85			return;
86
87			if (target_server != NULL)
88			{
89	michael	2804	sendto_match_servs(source_p, target_server, CAP_KLN, "KLINE %s %lu %s %s :%s",
90			target_server, (unsigned long)tkline_time,
91			user, host, reason);
92	adx	30
93			/* Allow ON to apply local kline as well if it matches */
94	michael	1652	if (match(target_server, me.name))
95	adx	30	return;
96			}
97			else
98			cluster_a_line(source_p, "KLINE", CAP_KLN, SHARED_KLINE,
99	michael	1058	"%d %s %s :%s", tkline_time, user, host, reason);
100	adx	30
101	michael	1243	if (already_placed_kline(source_p, user, host, 1))
102	adx	30	return;
103
104			cur_time = CurrentTime;
105			current_date = smalldate(cur_time);
106	michael	1632	conf = conf_make(CONF_KLINE);
107	adx	30
108	michael	1646	conf->host = xstrdup(host);
109			conf->user = xstrdup(user);
110	adx	30
111			if (tkline_time != 0)
112	michael	1233	snprintf(buffer, sizeof(buffer), "Temporary K-line %d min. - %s (%s)",
113			(int)(tkline_time/60), reason, current_date);
114	adx	30	else
115	michael	1233	snprintf(buffer, sizeof(buffer), "%s (%s)", reason, current_date);
116	adx	30
117	michael	1646	conf->reason = xstrdup(buffer);
118	michael	1632	m_kline_add_kline(source_p, conf, tkline_time);
119	adx	30	}
120
121			/* me_kline - handle remote kline. no propagation */
122			static void
123			me_kline(struct Client client_p, struct Client source_p,
124			int parc, char *parv[])
125			{
126	michael	1632	struct MaskItem *conf = NULL;
127	michael	1628	int tkline_time = 0;
128	adx	30	const char* current_date;
129			time_t cur_time;
130	michael	1622	char kuser, khost, *kreason;
131	adx	30
132	michael	352	if (parc != 6 \|\| EmptyString(parv[5]))
133	adx	30	return;
134
135	michael	1652	if (match(parv[1], me.name))
136	adx	30	return;
137
138			tkline_time = valid_tkline(parv[2], TK_SECONDS);
139			kuser = parv[3];
140			khost = parv[4];
141			kreason = parv[5];
142
143			cur_time = CurrentTime;
144			current_date = smalldate(cur_time);
145
146	michael	1632	if (HasFlag(source_p, FLAGS_SERVICE) \|\| find_matching_name_conf(CONF_ULINE, source_p->servptr->name,
147	adx	30	source_p->username, source_p->host,
148			SHARED_KLINE))
149			{
150			if (!IsClient(source_p) \|\|
151	michael	1243	already_placed_kline(source_p, kuser, khost, 1))
152	adx	30	return;
153
154	michael	1632	conf = conf_make(CONF_KLINE);
155	michael	1646	conf->host = xstrdup(khost);
156			conf->user = xstrdup(kuser);
157	adx	30
158			if (tkline_time != 0)
159	michael	1233	snprintf(buffer, sizeof(buffer), "Temporary K-line %d min. - %s (%s)",
160			(int)(tkline_time/60), kreason, current_date);
161	adx	30	else
162	michael	1233	snprintf(buffer, sizeof(buffer), "%s (%s)", kreason, current_date);
163	adx	30
164	michael	1646	conf->reason = xstrdup(buffer);
165	michael	1632	m_kline_add_kline(source_p, conf, tkline_time);
166	adx	30	}
167			}
168
169			static void
170			ms_kline(struct Client client_p, struct Client source_p,
171	michael	1058	int parc, char *parv[])
172	adx	30	{
173	michael	352	if (parc != 6 \|\| EmptyString(parv[5]))
174	adx	30	return;
175
176			/* parv[0] parv[1] parv[2] parv[3] parv[4] parv[5] */
177			/* oper target_server tkline_time user host reason */
178			sendto_match_servs(source_p, parv[1], CAP_KLN,
179			"KLINE %s %s %s %s :%s",
180			parv[1], parv[2], parv[3], parv[4], parv[5]);
181
182			me_kline(client_p, source_p, parc, parv);
183			}
184
185			/* apply_tkline()
186			*
187			* inputs -
188			* output - NONE
189			* side effects - tkline as given is placed
190			*/
191			static void
192	michael	1632	m_kline_add_kline(struct Client source_p, struct MaskItem conf,
193	michael	1622	time_t tkline_time)
194	adx	30	{
195	michael	1622	if (tkline_time)
196			{
197	michael	1649	conf->until = CurrentTime + tkline_time;
198	michael	1622	sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
199			"%s added temporary %d min. K-Line for [%s@%s] [%s]",
200			get_oper_name(source_p), tkline_time/60,
201	michael	1632	conf->user, conf->host,
202			conf->reason);
203	michael	1622	sendto_one(source_p, ":%s NOTICE %s :Added temporary %d min. K-Line [%s@%s]",
204	michael	1632	MyConnect(source_p) ? me.name : ID_or_name(&me, source_p->from),
205			source_p->name, tkline_time/60, conf->user, conf->host);
206	michael	1622	ilog(LOG_TYPE_KLINE, "%s added temporary %d min. K-Line for [%s@%s] [%s]",
207	michael	2340	get_oper_name(source_p), tkline_time/60,
208	michael	1632	conf->user, conf->host, conf->reason);
209	michael	1622	}
210			else
211			{
212			sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
213			"%s added K-Line for [%s@%s] [%s]",
214			get_oper_name(source_p),
215	michael	1632	conf->user, conf->host, conf->reason);
216	michael	1622	sendto_one(source_p, ":%s NOTICE %s :Added K-Line [%s@%s]",
217			MyConnect(source_p) ? me.name : ID_or_name(&me, source_p->from),
218	michael	1632	source_p->name, conf->user, conf->host);
219	michael	1622	ilog(LOG_TYPE_KLINE, "%s added K-Line for [%s@%s] [%s]",
220	michael	2340	get_oper_name(source_p), conf->user, conf->host, conf->reason);
221	michael	1622	}
222	michael	1247
223	michael	1632	conf->setat = CurrentTime;
224			SetConfDatabase(conf);
225	michael	1628
226	michael	1632	add_conf_by_address(CONF_KLINE, conf);
227	adx	30	rehashed_klines = 1;
228			}
229
230			/* already_placed_kline()
231			* inputs - user to complain to, username & host to check for
232			* outputs - returns 1 on existing K-line, 0 if doesn't exist
233			* side effects - notifies source_p if the K-line already exists
234			*/
235			/*
236			* Note: This currently works if the new K-line is a special case of an
237			* existing K-line, but not the other way round. To do that we would
238			* have to walk the hash and check every existing K-line. -A1kmm.
239			*/
240			static int
241			already_placed_kline(struct Client source_p, const char luser, const char *lhost, int warn)
242			{
243			const char *reason;
244			struct irc_ssaddr iphost, *piphost;
245	michael	1632	struct MaskItem *conf = NULL;
246	michael	1644	int t = 0;
247			int aftype = 0;
248	adx	30
249	michael	1644	if ((t = parse_netmask(lhost, &iphost, NULL)) != HM_HOST)
250	adx	30	{
251			#ifdef IPV6
252			if (t == HM_IPV6)
253	michael	1644	aftype = AF_INET6;
254	adx	30	else
255			#endif
256	michael	1644	aftype = AF_INET;
257	adx	30	piphost = &iphost;
258			}
259			else
260			piphost = NULL;
261
262	michael	1644	if ((conf = find_conf_by_address(lhost, piphost, CONF_KLINE, aftype, luser, NULL, 0)))
263	adx	30	{
264			if (warn)
265			{
266	michael	1794	reason = conf->reason ? conf->reason : CONF_NOREASON;
267	adx	30	sendto_one(source_p,
268			":%s NOTICE %s :[%s@%s] already K-Lined by [%s@%s] - %s",
269	michael	1632	me.name, source_p->name, luser, lhost, conf->user,
270			conf->host, reason);
271	adx	30	}
272	michael	1298
273			return 1;
274	adx	30	}
275
276	michael	1298	return 0;
277	adx	30	}
278
279			/*
280			** mo_unkline
281			** Added Aug 31, 1997
282			** common (Keith Fralick) fralick@gate.net
283			**
284			** parv[0] = sender
285			** parv[1] = address to remove
286			*
287			*
288			*/
289			static void
290			mo_unkline(struct Client client_p,struct Client source_p,
291			int parc, char *parv[])
292			{
293			char *target_server = NULL;
294			char user, host;
295
296	michael	1219	if (!HasOFlag(source_p, OPER_FLAG_UNKLINE))
297	adx	30	{
298	michael	1834	sendto_one(source_p, form_str(ERR_NOPRIVS),
299	adx	30	me.name, source_p->name, "unkline");
300			return;
301			}
302
303	michael	1622	if (EmptyString(parv[1]))
304	adx	30	{
305	michael	1834	sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
306	adx	30	me.name, source_p->name, "UNKLINE");
307			return;
308			}
309
310			if (parse_aline("UNKLINE", source_p, parc, parv, 0, &user,
311			&host, NULL, &target_server, NULL) < 0)
312			return;
313
314			if (target_server != NULL)
315			{
316			sendto_match_servs(source_p, target_server, CAP_UNKLN,
317			"UNKLINE %s %s %s",
318			target_server, user, host);
319
320			/* Allow ON to apply local unkline as well if it matches */
321	michael	1652	if (match(target_server, me.name))
322	adx	30	return;
323			}
324			else
325			cluster_a_line(source_p, "UNKLINE", CAP_UNKLN, SHARED_UNKLINE,
326	michael	1058	"%s %s", user, host);
327	adx	30
328	michael	1622	if (remove_kline_match(host, user))
329	adx	30	{
330			sendto_one(source_p,
331	michael	1622	":%s NOTICE %s :K-Line for [%s@%s] is removed",
332	adx	30	me.name, source_p->name, user, host);
333	michael	1618	sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
334	michael	1058	"%s has removed the K-Line for: [%s@%s]",
335			get_oper_name(source_p), user, host);
336	michael	1247	ilog(LOG_TYPE_KLINE, "%s removed K-Line for [%s@%s]",
337	michael	2340	get_oper_name(source_p), user, host);
338	adx	30	}
339			else
340			sendto_one(source_p, ":%s NOTICE %s :No K-Line for [%s@%s] found",
341			me.name, source_p->name, user, host);
342			}
343
344			/* me_unkline()
345			*
346			* inputs - server
347			* - client
348			* - parc
349			* - parv
350			* outputs - none
351			* side effects - if server is authorized, kline is removed
352			* does not propagate message
353			*/
354			static void
355			me_unkline(struct Client client_p, struct Client source_p,
356			int parc, char *parv[])
357			{
358			const char kuser, khost;
359
360			if (parc != 4)
361			return;
362
363			kuser = parv[2];
364			khost = parv[3];
365
366	michael	1652	if (!IsClient(source_p) \|\| match(parv[1], me.name))
367	adx	30	return;
368
369	michael	1632	if (HasFlag(source_p, FLAGS_SERVICE) \|\| find_matching_name_conf(CONF_ULINE,
370	adx	30	source_p->servptr->name,
371			source_p->username, source_p->host,
372			SHARED_UNKLINE))
373			{
374	michael	1622	if (remove_kline_match(khost, kuser))
375	adx	30	{
376			sendto_one(source_p,
377	michael	1622	":%s NOTICE %s :K-Line for [%s@%s] is removed",
378	adx	30	me.name, source_p->name, kuser, khost);
379	michael	1618	sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
380	michael	1622	"%s has removed the K-Line for: [%s@%s]",
381	adx	30	get_oper_name(source_p), kuser, khost);
382	michael	1247	ilog(LOG_TYPE_KLINE, "%s removed K-Line for [%s@%s]",
383	michael	2340	get_oper_name(source_p), kuser, khost);
384	adx	30	}
385			else
386			sendto_one(source_p, ":%s NOTICE %s :No K-Line for [%s@%s] found",
387			me.name, source_p->name, kuser, khost);
388			}
389			}
390
391			/* ms_unkline - propagates and handles a remote unkline message */
392			static void
393			ms_unkline(struct Client client_p, struct Client source_p,
394			int parc, char *parv[])
395			{
396			if (parc != 4)
397			return;
398
399			sendto_match_servs(source_p, parv[1], CAP_UNKLN,
400			"UNKLINE %s %s %s",
401			parv[1], parv[2], parv[3]);
402
403			me_unkline(client_p, source_p, parc, parv);
404			}
405
406			/* static int remove_tkline_match(const char host, const char user)
407			* Input: A hostname, a username to unkline.
408			* Output: returns YES on success, NO if no tkline removed.
409			* Side effects: Any matching tklines are removed.
410			*/
411			static int
412	michael	1622	remove_kline_match(const char host, const char user)
413	adx	30	{
414	michael	1369	struct irc_ssaddr iphost, *piphost;
415	michael	1644	struct MaskItem *conf;
416			int t = 0;
417			int aftype = 0;
418	michael	1298
419	michael	1369	if ((t = parse_netmask(host, &iphost, NULL)) != HM_HOST)
420	adx	30	{
421			#ifdef IPV6
422	michael	1369	if (t == HM_IPV6)
423	michael	1644	aftype = AF_INET6;
424	michael	1369	else
425	adx	30	#endif
426	michael	1644	aftype = AF_INET;
427	michael	1369	piphost = &iphost;
428	adx	30	}
429	michael	1369	else
430			piphost = NULL;
431	adx	30
432	michael	1644	if ((conf = find_conf_by_address(host, piphost, CONF_KLINE, aftype, user, NULL, 0)))
433	michael	1369	{
434	michael	1632	if (IsConfDatabase(conf))
435	michael	1369	{
436	michael	1632	delete_one_address_conf(host, conf);
437	michael	1369	return 1;
438			}
439			}
440
441	michael	1058	return 0;
442	adx	30	}
443	michael	1230
444			static struct Message kline_msgtab = {
445			"KLINE", 0, 0, 2, MAXPARA, MFLG_SLOW, 0,
446			{m_unregistered, m_not_oper, ms_kline, me_kline, mo_kline, m_ignore}
447			};
448
449			static struct Message unkline_msgtab = {
450			"UNKLINE", 0, 0, 2, MAXPARA, MFLG_SLOW, 0,
451			{m_unregistered, m_not_oper, ms_unkline, me_unkline, mo_unkline, m_ignore}
452			};
453
454			static void
455			module_init(void)
456			{
457			mod_add_cmd(&kline_msgtab);
458			mod_add_cmd(&unkline_msgtab);
459			add_capability("KLN", CAP_KLN, 1);
460			add_capability("UNKLN", CAP_UNKLN, 1);
461			}
462
463			static void
464			module_exit(void)
465			{
466			mod_del_cmd(&kline_msgtab);
467			mod_del_cmd(&unkline_msgtab);
468			delete_capability("UNKLN");
469			delete_capability("KLN");
470			}
471
472			struct module module_entry = {
473			.node = { NULL, NULL, NULL },
474			.name = NULL,
475			.version = "$Revision$",
476			.handle = NULL,
477			.modinit = module_init,
478			.modexit = module_exit,
479			.flags = 0
480			};