[irc/quakenet/snircd.git] / ircd / m_gline.c

/*
 * IRC - Internet Relay Chat, ircd/m_gline.c
 * Copyright (C) 1990 Jarkko Oikarinen and
 *                    University of Oulu, Computing Center
 *
 * See file AUTHORS in IRC package for additional names of
 * the programmers.
 *
 * 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 1, 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., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 * $Id: m_gline.c,v 1.26.2.1 2006/06/09 02:13:51 entrope Exp $
 */

/*
 * m_functions execute protocol messages on this server:
 *
 *    cptr    is always NON-NULL, pointing to a *LOCAL* client
 *            structure (with an open socket connected!). This
 *            identifies the physical socket where the message
 *            originated (or which caused the m_function to be
 *            executed--some m_functions may call others...).
 *
 *    sptr    is the source of the message, defined by the
 *            prefix part of the message if present. If not
 *            or prefix not found, then sptr==cptr.
 *
 *            (!IsServer(cptr)) => (cptr == sptr), because
 *            prefixes are taken *only* from servers...
 *
 *            (IsServer(cptr))
 *                    (sptr == cptr) => the message didn't
 *                    have the prefix.
 *
 *                    (sptr != cptr && IsServer(sptr) means
 *                    the prefix specified servername. (?)
 *
 *                    (sptr != cptr && !IsServer(sptr) means
 *                    that message originated from a remote
 *                    user (not local).
 *
 *            combining
 *
 *            (!IsServer(sptr)) means that, sptr can safely
 *            taken as defining the target structure of the
 *            message in this server.
 *
 *    *Always* true (if 'parse' and others are working correct):
 *
 *    1)      sptr->from == cptr  (note: cptr->from == cptr)
 *
 *    2)      MyConnect(sptr) <=> sptr == cptr (e.g. sptr
 *            *cannot* be a local connection, unless it's
 *            actually cptr!). [MyConnect(x) should probably
 *            be defined as (x == x->from) --msa ]
 *
 *    parc    number of variable parameter strings (if zero,
 *            parv is allowed to be NULL)
 *
 *    parv    a NULL terminated list of parameter pointers,
 *
 *                    parv[0], sender (prefix string), if not present
 *                            this points to an empty string.
 *                    parv[1]...parv[parc-1]
 *                            pointers to additional parameters
 *                    parv[parc] == NULL, *always*
 *
 *            note:   it is guaranteed that parv[0]..parv[parc-1] are all
 *                    non-NULL pointers.
 */
#include "config.h"

#include "client.h"
#include "gline.h"
#include "hash.h"
#include "ircd.h"
#include "ircd_features.h"
#include "ircd_log.h"
#include "ircd_reply.h"
#include "ircd_string.h"
#include "match.h"
#include "msg.h"
#include "numeric.h"
#include "numnicks.h"
#include "s_conf.h"
#include "s_misc.h"
#include "send.h"

/* #include <assert.h> -- Now using assert in ircd_log.h */
#include <stdlib.h>
#include <string.h>

/*
 * ms_gline - server message handler
 *
 * parv[0] = Sender prefix
 * parv[1] = Target: server numeric
 * parv[2] = (+|-)<G-line mask>
 * parv[3] = G-line lifetime
 *
 * From Uworld:
 *
 * parv[4] = Comment
 *
 * From somewhere else:
 *
 * parv[4] = Last modification time
 * parv[5] = Comment
 *
 */
int
ms_gline(struct Client *cptr, struct Client *sptr, int parc, char *parv[])
{
  struct Client *acptr = 0;
  struct Gline *agline;
  unsigned int flags = 0;
  time_t expire_off, lastmod = 0;
  char *mask = parv[2], *target = parv[1], *reason = "No reason";

  if (*mask == '!')
  {
    mask++;
    flags |= GLINE_OPERFORCE; /* assume oper had WIDE_GLINE */
  }

  if ((parc == 3 && *mask == '-') || parc == 5)
  {
    if (!find_conf_byhost(cli_confs(cptr), cli_name(sptr), CONF_UWORLD))
      return need_more_params(sptr, "GLINE");

    flags |= GLINE_FORCE;
  }
  else if (parc > 5)
    lastmod = atoi(parv[4]);
  else
    return need_more_params(sptr, "GLINE");

  if (parc > 4)
    reason = parv[parc - 1];

  if (IsServer(sptr))
    flags |= GLINE_FORCE;

  if (!(target[0] == '*' && target[1] == '\0')) {
    if (!( (acptr = FindNServer(target)) || 
           (acptr = SeekServer(target)) ) )
      return 0; /* no such server */

    if (!IsMe(acptr)) { /* manually propagate */
      if (!lastmod)
	sendcmdto_one(sptr, CMD_GLINE, acptr,
		      (parc == 3) ? "%s %s" : "%s %s %s :%s", target, mask,
		      parv[3], reason);
      else
	sendcmdto_one(sptr, CMD_GLINE, acptr, "%s %s%s %s %s :%s", target,
		      flags & GLINE_OPERFORCE ? "!" : "", mask, parv[3],
		      parv[4], reason);

      return 0;
    }

    /* For asuka we don't want glines sent this way treated as local
     * flags |= GLINE_LOCAL;
     */
  }

  if (*mask == '-')
    mask++;
  else if (*mask == '+') {
    flags |= GLINE_ACTIVE;
    mask++;
  } else
    flags |= GLINE_ACTIVE;

  expire_off = parc < 5 ? 0 : atoi(parv[3]);

  agline = gline_find(mask, GLINE_ANY | GLINE_EXACT);

  if (agline) {
    if (GlineIsLocal(agline) && !(flags & GLINE_LOCAL)) /* global over local */
      gline_free(agline);
    else if (!lastmod && ((flags & GLINE_ACTIVE) == GlineIsRemActive(agline)))
      return gline_propagate(cptr, sptr, agline);
    else if (!lastmod || GlineLastMod(agline) < lastmod) { /* new mod */
      if (flags & GLINE_ACTIVE)
	return gline_activate(cptr, sptr, agline, lastmod, flags);
      else
	return gline_deactivate(cptr, sptr, agline, lastmod, flags);
    } else if (GlineLastMod(agline) == lastmod || IsBurstOrBurstAck(cptr))
      return 0;
    else
      return gline_resend(cptr, agline); /* other server desynched WRT gline */
  } else if (parc == 3 && !(flags & GLINE_ACTIVE)) {
    /* U-lined server removing a G-line we don't have; propagate the removal
     * anyway.
     */
    if (!(flags & GLINE_LOCAL))
      sendcmdto_serv_butone(sptr, CMD_GLINE, cptr, "* -%s", mask);
    return 0;
  } else if (parc < 5)
    return need_more_params(sptr, "GLINE");

  return gline_add(cptr, sptr, mask, reason, expire_off, lastmod, flags);
}

/*
 * mo_gline - oper message handler
 *
 * parv[0] = Sender prefix
 * parv[1] = [[+|-]<G-line mask>]
 *
 * Local (to me) style:
 *
 * parv[2] = [Expiration offset]
 * parv[3] = [Comment]
 *
 * Global (or remote local) style:
 *
 * parv[2] = [target]
 * parv[3] = [Expiration offset]
 * parv[4] = [Comment]
 *
 */
int
mo_gline(struct Client *cptr, struct Client *sptr, int parc, char *parv[])
{
  struct Client *acptr = 0;
  struct Gline *agline;
  unsigned int flags = 0;
  time_t expire_off;
  char *mask = parv[1], *target = 0, *reason;

  if (parc < 2)
    return gline_list(sptr, 0);

  if (*mask == '!') {
    mask++;

    if (HasPriv(sptr, PRIV_WIDE_GLINE))
      flags |= GLINE_OPERFORCE;
  }

  if (*mask == '+') {
    flags |= GLINE_ACTIVE;
    mask++;

  } else if (*mask == '-')
    mask++;
  else
    return gline_list(sptr, mask);

  if (parc == 4) {
    expire_off = atoi(parv[2]);
    reason = parv[3];
    flags |= GLINE_LOCAL;
  } else if (parc > 4) {
    target = parv[2];
    expire_off = atoi(parv[3]);
    reason = parv[4];
  } else
    return need_more_params(sptr, "GLINE");

  if (target)
  {
    if (!(target[0] == '*' && target[1] == '\0'))
    {
      if (!(acptr = find_match_server(target)))
	return send_reply(sptr, ERR_NOSUCHSERVER, target);

      /* manually propagate, since we don't set it */
      if (!IsMe(acptr))
      {
	if (!feature_bool(FEAT_CONFIG_OPERCMDS))
	  return send_reply(sptr, ERR_DISABLED, "GLINE");

	if (!HasPriv(sptr, PRIV_GLINE))
	  return send_reply(sptr, ERR_NOPRIVILEGES);

	sendcmdto_one(sptr, CMD_GLINE, acptr, "%C %s%c%s %s %Tu :%s", acptr,
		      flags & GLINE_OPERFORCE ? "!" : "",
		      flags & GLINE_ACTIVE ? '+' : '-', mask, parv[3],
		      TStime(), reason);
	return 0;
      }
      flags |= GLINE_LOCAL;
    }
  }

  if (!(flags & GLINE_LOCAL) && !feature_bool(FEAT_CONFIG_OPERCMDS))
    return send_reply(sptr, ERR_DISABLED, "GLINE");

  if (!HasPriv(sptr, (flags & GLINE_LOCAL ? PRIV_LOCAL_GLINE : PRIV_GLINE)))
    return send_reply(sptr, ERR_NOPRIVILEGES);

  agline = gline_find(mask, GLINE_ANY | GLINE_EXACT);

  if (agline) {
    if (GlineIsLocal(agline) && !(flags & GLINE_LOCAL)) /* global over local */
      gline_free(agline);
    else {
      if (!GlineLastMod(agline)) /* force mods to Uworld-set G-lines local */
	flags |= GLINE_LOCAL;

      if (flags & GLINE_ACTIVE)
	return gline_activate(cptr, sptr, agline,
			      GlineLastMod(agline) ? TStime() : 0, flags);
      else
	return gline_deactivate(cptr, sptr, agline,
				GlineLastMod(agline) ? TStime() : 0, flags);
    }
  }

  return gline_add(cptr, sptr, mask, reason, expire_off, TStime(), flags);
}

/*
 * m_gline - user message handler
 *
 * parv[0] = Sender prefix
 * parv[1] = [<server name>]
 *
 */
int
m_gline(struct Client *cptr, struct Client *sptr, int parc, char *parv[])
{
  if (feature_bool(FEAT_HIS_USERGLINE))
    return send_reply(sptr, ERR_DISABLED, "GLINE");

  if (parc < 2)
    return send_reply(sptr, ERR_NOSUCHGLINE, "");

  return gline_list(sptr, parv[1]);
}
Commit	Line	Data
189935b1	1	/*
	2	* IRC - Internet Relay Chat, ircd/m_gline.c
	3	* Copyright (C) 1990 Jarkko Oikarinen and
	4	* University of Oulu, Computing Center
	5	*
	6	* See file AUTHORS in IRC package for additional names of
	7	* the programmers.
	8	*
	9	* This program is free software; you can redistribute it and/or modify
	10	* it under the terms of the GNU General Public License as published by
	11	* the Free Software Foundation; either version 1, or (at your option)
	12	* any later version.
	13	*
	14	* This program is distributed in the hope that it will be useful,
	15	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	17	* GNU General Public License for more details.
	18	*
	19	* You should have received a copy of the GNU General Public License
	20	* along with this program; if not, write to the Free Software
	21	* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	22	*
9f8856e9	23	* $Id: m_gline.c,v 1.26.2.1 2006/06/09 02:13:51 entrope Exp $
189935b1	24	*/
	25
	26	/*
	27	* m_functions execute protocol messages on this server:
	28	*
	29	* cptr is always NON-NULL, pointing to a LOCAL client
	30	* structure (with an open socket connected!). This
	31	* identifies the physical socket where the message
	32	* originated (or which caused the m_function to be
	33	* executed--some m_functions may call others...).
	34	*
	35	* sptr is the source of the message, defined by the
	36	* prefix part of the message if present. If not
	37	* or prefix not found, then sptr==cptr.
	38	*
	39	* (!IsServer(cptr)) => (cptr == sptr), because
	40	* prefixes are taken only from servers...
	41	*
	42	* (IsServer(cptr))
	43	* (sptr == cptr) => the message didn't
	44	* have the prefix.
	45	*
	46	* (sptr != cptr && IsServer(sptr) means
	47	* the prefix specified servername. (?)
	48	*
	49	* (sptr != cptr && !IsServer(sptr) means
	50	* that message originated from a remote
	51	* user (not local).
	52	*
	53	* combining
	54	*
	55	* (!IsServer(sptr)) means that, sptr can safely
	56	* taken as defining the target structure of the
	57	* message in this server.
	58	*
	59	* Always true (if 'parse' and others are working correct):
	60	*
	61	* 1) sptr->from == cptr (note: cptr->from == cptr)
	62	*
	63	* 2) MyConnect(sptr) <=> sptr == cptr (e.g. sptr
	64	* cannot be a local connection, unless it's
	65	* actually cptr!). [MyConnect(x) should probably
	66	* be defined as (x == x->from) --msa ]
	67	*
	68	* parc number of variable parameter strings (if zero,
	69	* parv is allowed to be NULL)
	70	*
	71	* parv a NULL terminated list of parameter pointers,
	72	*
	73	* parv[0], sender (prefix string), if not present
	74	* this points to an empty string.
	75	* parv[1]...parv[parc-1]
	76	* pointers to additional parameters
	77	* parv[parc] == NULL, always
	78	*
	79	* note: it is guaranteed that parv[0]..parv[parc-1] are all
	80	* non-NULL pointers.
	81	*/
	82	#include "config.h"
	83
	84	#include "client.h"
	85	#include "gline.h"
	86	#include "hash.h"
	87	#include "ircd.h"
88	#include "ircd_features.h"
89	#include "ircd_log.h"
90	#include "ircd_reply.h"
91	#include "ircd_string.h"
92	#include "match.h"
93	#include "msg.h"
94	#include "numeric.h"
95	#include "numnicks.h"
96	#include "s_conf.h"
97	#include "s_misc.h"
98	#include "send.h"
99
100	/* #include <assert.h> -- Now using assert in ircd_log.h */
101	#include <stdlib.h>
102	#include <string.h>
103
104	/*
105	* ms_gline - server message handler
106	*
107	* parv[0] = Sender prefix
108	* parv[1] = Target: server numeric
109	* parv[2] = (+\|-)<G-line mask>
110	* parv[3] = G-line lifetime
111	*
112	* From Uworld:
113	*
114	* parv[4] = Comment
115	*
116	* From somewhere else:
117	*
118	* parv[4] = Last modification time
119	* parv[5] = Comment
120	*
121	*/
122	int
123	ms_gline(struct Client cptr, struct Client sptr, int parc, char *parv[])
124	{
125	struct Client *acptr = 0;
126	struct Gline *agline;
127	unsigned int flags = 0;
128	time_t expire_off, lastmod = 0;
129	char mask = parv[2], target = parv[1], *reason = "No reason";
130
131	if (*mask == '!')
132	{
133	mask++;
134	flags \|= GLINE_OPERFORCE; /* assume oper had WIDE_GLINE */
135	}
136
137	if ((parc == 3 && *mask == '-') \|\| parc == 5)
138	{
139	if (!find_conf_byhost(cli_confs(cptr), cli_name(sptr), CONF_UWORLD))
140	return need_more_params(sptr, "GLINE");
141
189935b1	142	flags \|= GLINE_FORCE;
	143	}
	144	else if (parc > 5)
189935b1	145	lastmod = atoi(parv[4]);
189935b1	146	else
	147	return need_more_params(sptr, "GLINE");
	148
9f8856e9	149	if (parc > 4)
	150	reason = parv[parc - 1];
	151
189935b1	152	if (IsServer(sptr))
	153	flags \|= GLINE_FORCE;
	154
	155	if (!(target[0] == '*' && target[1] == '\0')) {
d8e74551	156	if (!( (acptr = FindNServer(target)) \|\|
d8e74551	157	(acptr = SeekServer(target)) ) )
189935b1	158	return 0; /* no such server */
	159
	160	if (!IsMe(acptr)) { /* manually propagate */
	161	if (!lastmod)
	162	sendcmdto_one(sptr, CMD_GLINE, acptr,
d8e74551	163	(parc == 3) ? "%s %s" : "%s %s %s :%s", target, mask,
189935b1	164	parv[3], reason);
189935b1	165	else
d8e74551	166	sendcmdto_one(sptr, CMD_GLINE, acptr, "%s %s%s %s %s :%s", target,
189935b1	167	flags & GLINE_OPERFORCE ? "!" : "", mask, parv[3],
	168	parv[4], reason);
	169
	170	return 0;
	171	}
	172
d8e74551	173	/* For asuka we don't want glines sent this way treated as local
	174	* flags \|= GLINE_LOCAL;
	175	*/
189935b1	176	}
	177
	178	if (*mask == '-')
	179	mask++;
	180	else if (*mask == '+') {
	181	flags \|= GLINE_ACTIVE;
	182	mask++;
	183	} else
	184	flags \|= GLINE_ACTIVE;
	185
	186	expire_off = parc < 5 ? 0 : atoi(parv[3]);
	187
	188	agline = gline_find(mask, GLINE_ANY \| GLINE_EXACT);
	189
	190	if (agline) {
	191	if (GlineIsLocal(agline) && !(flags & GLINE_LOCAL)) /* global over local */
	192	gline_free(agline);
	193	else if (!lastmod && ((flags & GLINE_ACTIVE) == GlineIsRemActive(agline)))
	194	return gline_propagate(cptr, sptr, agline);
	195	else if (!lastmod \|\| GlineLastMod(agline) < lastmod) { /* new mod */
	196	if (flags & GLINE_ACTIVE)
	197	return gline_activate(cptr, sptr, agline, lastmod, flags);
	198	else
	199	return gline_deactivate(cptr, sptr, agline, lastmod, flags);
	200	} else if (GlineLastMod(agline) == lastmod \|\| IsBurstOrBurstAck(cptr))
	201	return 0;
	202	else
	203	return gline_resend(cptr, agline); /* other server desynched WRT gline */
	204	} else if (parc == 3 && !(flags & GLINE_ACTIVE)) {
	205	/* U-lined server removing a G-line we don't have; propagate the removal
	206	* anyway.
	207	*/
	208	if (!(flags & GLINE_LOCAL))
	209	sendcmdto_serv_butone(sptr, CMD_GLINE, cptr, "* -%s", mask);
	210	return 0;
	211	} else if (parc < 5)
	212	return need_more_params(sptr, "GLINE");
	213
	214	return gline_add(cptr, sptr, mask, reason, expire_off, lastmod, flags);
	215	}
	216
	217	/*
	218	* mo_gline - oper message handler
	219	*
	220	* parv[0] = Sender prefix
	221	* parv[1] = [[+\|-]<G-line mask>]
	222	*
	223	* Local (to me) style:
	224	*
	225	* parv[2] = [Expiration offset]
	226	* parv[3] = [Comment]
	227	*
	228	* Global (or remote local) style:
	229	*
	230	* parv[2] = [target]
	231	* parv[3] = [Expiration offset]
	232	* parv[4] = [Comment]
	233	*
	234	*/
	235	int
	236	mo_gline(struct Client cptr, struct Client sptr, int parc, char *parv[])
	237	{
	238	struct Client *acptr = 0;
	239	struct Gline *agline;
240	unsigned int flags = 0;
241	time_t expire_off;
242	char mask = parv[1], target = 0, *reason;
243
244	if (parc < 2)
245	return gline_list(sptr, 0);
246
247	if (*mask == '!') {
248	mask++;
249
250	if (HasPriv(sptr, PRIV_WIDE_GLINE))
251	flags \|= GLINE_OPERFORCE;
252	}
253
254	if (*mask == '+') {
255	flags \|= GLINE_ACTIVE;
256	mask++;
257
258	} else if (*mask == '-')
259	mask++;
260	else
261	return gline_list(sptr, mask);
262
263	if (parc == 4) {
264	expire_off = atoi(parv[2]);
265	reason = parv[3];
266	flags \|= GLINE_LOCAL;
267	} else if (parc > 4) {
268	target = parv[2];
269	expire_off = atoi(parv[3]);
270	reason = parv[4];
271	} else
272	return need_more_params(sptr, "GLINE");
273
274	if (target)
275	{
276	if (!(target[0] == '*' && target[1] == '\0'))
277	{
278	if (!(acptr = find_match_server(target)))
279	return send_reply(sptr, ERR_NOSUCHSERVER, target);
280
281	/* manually propagate, since we don't set it */
282	if (!IsMe(acptr))
283	{
284	if (!feature_bool(FEAT_CONFIG_OPERCMDS))
285	return send_reply(sptr, ERR_DISABLED, "GLINE");
286
287	if (!HasPriv(sptr, PRIV_GLINE))
288	return send_reply(sptr, ERR_NOPRIVILEGES);
289
290	sendcmdto_one(sptr, CMD_GLINE, acptr, "%C %s%c%s %s %Tu :%s", acptr,
291	flags & GLINE_OPERFORCE ? "!" : "",
292	flags & GLINE_ACTIVE ? '+' : '-', mask, parv[3],
293	TStime(), reason);
294	return 0;
295	}
296	flags \|= GLINE_LOCAL;
297	}
298	}
299
300	if (!(flags & GLINE_LOCAL) && !feature_bool(FEAT_CONFIG_OPERCMDS))
301	return send_reply(sptr, ERR_DISABLED, "GLINE");
302
303	if (!HasPriv(sptr, (flags & GLINE_LOCAL ? PRIV_LOCAL_GLINE : PRIV_GLINE)))
304	return send_reply(sptr, ERR_NOPRIVILEGES);
305
306	agline = gline_find(mask, GLINE_ANY \| GLINE_EXACT);
307
308	if (agline) {
309	if (GlineIsLocal(agline) && !(flags & GLINE_LOCAL)) /* global over local */
310	gline_free(agline);
311	else {
312	if (!GlineLastMod(agline)) /* force mods to Uworld-set G-lines local */
313	flags \|= GLINE_LOCAL;
314
315	if (flags & GLINE_ACTIVE)
316	return gline_activate(cptr, sptr, agline,
317	GlineLastMod(agline) ? TStime() : 0, flags);
318	else
319	return gline_deactivate(cptr, sptr, agline,
320	GlineLastMod(agline) ? TStime() : 0, flags);
321	}
322	}
323
324	return gline_add(cptr, sptr, mask, reason, expire_off, TStime(), flags);
325	}
326
327	/*
328	* m_gline - user message handler
329	*
330	* parv[0] = Sender prefix
331	* parv[1] = [<server name>]
332	*
333	*/
334	int
335	m_gline(struct Client cptr, struct Client sptr, int parc, char *parv[])
336	{
d8e74551	337	if (feature_bool(FEAT_HIS_USERGLINE))
	338	return send_reply(sptr, ERR_DISABLED, "GLINE");
	339
189935b1	340	if (parc < 2)
	341	return send_reply(sptr, ERR_NOSUCHGLINE, "");
	342
	343	return gline_list(sptr, parv[1]);
	344	}