modules/core/m_join.c

/*
 *  ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
 *
 *  Copyright (c) 1997-2016 ircd-hybrid development team
 *
 *  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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
 *  USA
 */

/*! \file m_join.c
 * \brief Includes required functions for processing the JOIN command.
 * \version $Id$
 */

#include "stdinc.h"
#include "list.h"
#include "channel.h"
#include "channel_mode.h"
#include "client.h"
#include "hash.h"
#include "irc_string.h"
#include "ircd.h"
#include "numeric.h"
#include "send.h"
#include "server.h"
#include "conf.h"
#include "conf_resv.h"
#include "parse.h"
#include "modules.h"


static void set_final_mode(const struct Mode *, const struct Mode *);
static void remove_our_modes(struct Channel *, struct Client *);
static void remove_a_mode(struct Channel *, struct Client *, int, const char);

static char modebuf[MODEBUFLEN];
static char parabuf[MODEBUFLEN];
static char sendbuf[MODEBUFLEN];
static char *mbuf;

/*! \brief JOIN command handler
 *
 * \param source_p Pointer to allocated Client struct from which the message
 *                 originally comes from.  This can be a local or remote client.
 * \param parc     Integer holding the number of supplied arguments.
 * \param parv     Argument vector where parv[0] .. parv[parc-1] are non-NULL
 *                 pointers.
 * \note Valid arguments for this command are:
 *      - parv[0] = command
 *      - parv[1] = channel
 *      - parv[2] = channel password (key)
 */
static int
m_join(struct Client *source_p, int parc, char *parv[])
{
  if (EmptyString(parv[1]))
  {
    sendto_one_numeric(source_p, &me, ERR_NEEDMOREPARAMS, "JOIN");
    return 0;
  }

  channel_do_join(source_p, parv[1], parv[2]);
  return 0;
}

/* ms_join()
 *
 * inputs       - parv[0] = command
 *                parv[1] = ts
 *                parv[2] = channel name
 *                parv[3] = modes (Deprecated)
 * output       - none
 * side effects - handles remote JOIN's sent by servers. In TSora
 *                remote clients are joined using SJOIN, hence a
 *                JOIN sent by a server on behalf of a client is an error.
 *                here, the initial code is in to take an extra parameter
 *                and use it for the TimeStamp on a new channel.
 */
static int
ms_join(struct Client *source_p, int parc, char *parv[])
{
  uintmax_t newts = 0;
  uintmax_t oldts = 0;
  int keep_our_modes = 1;
  int keep_new_modes = 1;
  int isnew = 0;
  const char *servername = NULL;
  struct Channel *chptr = NULL;
  struct Mode mode, *oldmode;

  if (!IsClient(source_p))
    return 0;

  if (parc == 2 && !strcmp(parv[1], "0"))
  {
    channel_do_join_0(source_p);
    return 0;
  }

  if (parc < 4)
    return 0;

  if (!channel_check_name(parv[2], 0))
  {
    sendto_realops_flags(UMODE_DEBUG, L_ALL, SEND_NOTICE,
                         "*** Too long or invalid channel name from %s(via %s): %s",
                         source_p->name, source_p->from->name, parv[2]);
    return 0;
  }

  mbuf = modebuf;
  mode.mode = mode.limit = 0;
  mode.key[0] = '\0';

  if ((chptr = hash_find_channel(parv[2])) == NULL)
  {
    isnew = 1;
    chptr = channel_make(parv[2]);
  }

  newts   = strtoumax(parv[1], NULL, 10);
  oldts   = chptr->creationtime;
  oldmode = &chptr->mode;

  if (ConfigGeneral.ignore_bogus_ts)
  {
    if (newts < 800000000)
    {
      sendto_realops_flags(UMODE_DEBUG, L_ALL, SEND_NOTICE,
                           "*** Bogus TS %ju on %s ignored from %s(via %s)",
                           newts, chptr->name,
                           source_p->name, source_p->from->name);

      newts = (oldts == 0) ? 0 : 800000000;
    }
  }
  else
  {
    if (!newts && !isnew && oldts)
    {
      sendto_channel_local(NULL, chptr, 0, 0, 0,
                           ":%s NOTICE %s :*** Notice -- TS for %s changed from %ju to 0",
                           me.name, chptr->name, chptr->name, oldts);
      sendto_realops_flags(UMODE_SERVNOTICE, L_ALL, SEND_NOTICE,
                           "Server %s changing TS on %s from %ju to 0",
                           source_p->name, chptr->name, oldts);
    }
  }

  if (isnew)
    chptr->creationtime = newts;
  else if (newts == 0 || oldts == 0)
    chptr->creationtime = 0;
  else if (newts == oldts)
    ;
  else if (newts < oldts)
  {
    keep_our_modes = 0;
    chptr->creationtime = newts;
  }
  else
    keep_new_modes = 0;

  if (!keep_new_modes)
    mode = *oldmode;
  else if (keep_our_modes)
  {
    mode.mode |= oldmode->mode;

    if (oldmode->limit > mode.limit)
      mode.limit = oldmode->limit;
    if (strcmp(mode.key, oldmode->key) < 0)
      strlcpy(mode.key, oldmode->key, sizeof(mode.key));
  }

  set_final_mode(&mode, oldmode);
  chptr->mode = mode;

  /* Lost the TS, other side wins, so remove modes on this side */
  if (!keep_our_modes)
  {
    remove_our_modes(chptr, source_p);

    if (chptr->topic[0])
    {
      channel_set_topic(chptr, "", "", 0, 0);
      sendto_channel_local(NULL, chptr, 0, 0, 0, ":%s TOPIC %s :",
                           (IsHidden(source_p) ||
                           ConfigServerHide.hide_servers) ?
                           me.name : source_p->name, chptr->name);
    }

    sendto_channel_local(NULL, chptr, 0, 0, 0,
                         ":%s NOTICE %s :*** Notice -- TS for %s changed from %ju to %ju",
                          me.name, chptr->name, chptr->name,
                         oldts, newts);
  }

  if (*modebuf)
  {
    servername = (ConfigServerHide.hide_servers || IsHidden(source_p)) ?
                  me.name : source_p->name;

    /* This _SHOULD_ be to ALL_MEMBERS
     * It contains only +imnpstlk, etc */
    sendto_channel_local(NULL, chptr, 0, 0, 0, ":%s MODE %s %s %s",
                         servername, chptr->name, modebuf, parabuf);
  }

  if (!IsMember(source_p, chptr))
  {
    add_user_to_channel(chptr, source_p, 0, 1);

    sendto_channel_local(NULL, chptr, 0, CAP_EXTENDED_JOIN, 0, ":%s!%s@%s JOIN %s %s :%s",
                         source_p->name, source_p->username,
                         source_p->host, chptr->name, source_p->account, source_p->info);
    sendto_channel_local(NULL, chptr, 0, 0, CAP_EXTENDED_JOIN, ":%s!%s@%s JOIN :%s",
                         source_p->name, source_p->username,
                         source_p->host, chptr->name);

    if (source_p->away[0])
      sendto_channel_local(source_p, chptr, 0, CAP_AWAY_NOTIFY, 0,
                           ":%s!%s@%s AWAY :%s",
                           source_p->name, source_p->username,
                           source_p->host, source_p->away);
  }

  sendto_server(source_p, 0, 0, ":%s JOIN %ju %s +",
                source_p->id, chptr->creationtime, chptr->name);
  return 0;
}

/* set_final_mode
 *
 * inputs       - channel mode
 *              - old channel mode
 * output       - NONE
 * side effects - walk through all the channel modes turning off modes
 *                that were on in oldmode but aren't on in mode.
 *                Then walk through turning on modes that are on in mode
 *                but were not set in oldmode.
 */
static void
set_final_mode(const struct Mode *mode, const struct Mode *oldmode)
{
  char *pbuf = parabuf;
  int what = 0, len = 0;

  for (const struct mode_letter *tab = chan_modes; tab->letter; ++tab)
  {
    if ((tab->mode & mode->mode) && !(tab->mode & oldmode->mode))
    {
      if (what != 1)
      {
        *mbuf++ = '+';
        what = 1;
      }

      *mbuf++ = tab->letter;
    }
  }

  for (const struct mode_letter *tab = chan_modes; tab->letter; ++tab)
  {
    if ((tab->mode & oldmode->mode) && !(tab->mode & mode->mode))
    {
      if (what != -1)
      {
        *mbuf++ = '-';
        what = -1;
      }

      *mbuf++ = tab->letter;
    }
  }

  if (oldmode->limit && mode->limit == 0)
  {
    if (what != -1)
    {
      *mbuf++ = '-';
      what = -1;
    }

    *mbuf++ = 'l';
  }

  if (oldmode->key[0] && mode->key[0] == '\0')
  {
    if (what != -1)
    {
      *mbuf++ = '-';
      what = -1;
    }

    *mbuf++ = 'k';
    len = sprintf(pbuf, "%s ", oldmode->key);
    pbuf += len;
  }

  if (mode->limit && oldmode->limit != mode->limit)
  {
    if (what != 1)
    {
      *mbuf++ = '+';
      what = 1;
    }

    *mbuf++ = 'l';
    len = sprintf(pbuf, "%u ", mode->limit);
    pbuf += len;
  }

  if (mode->key[0] && strcmp(oldmode->key, mode->key))
  {
    if (what != 1)
    {
      *mbuf++ = '+';
      what = 1;
    }

    *mbuf++ = 'k';
    len = sprintf(pbuf, "%s ", mode->key);
    pbuf += len;
  }

  *mbuf = '\0';
}

/* remove_our_modes()
 *
 * inputs       - pointer to channel to remove modes from
 *              - client pointer
 * output       - NONE
 * side effects - Go through the local members, remove all their
 *                chanop modes etc., this side lost the TS.
 */
static void
remove_our_modes(struct Channel *chptr, struct Client *source_p)
{
  remove_a_mode(chptr, source_p, CHFL_CHANOP, 'o');
  remove_a_mode(chptr, source_p, CHFL_HALFOP, 'h');
  remove_a_mode(chptr, source_p, CHFL_VOICE, 'v');
}

/* remove_a_mode()
 *
 * inputs       -
 * output       - NONE
 * side effects - remove ONE mode from a channel
 */
static void
remove_a_mode(struct Channel *chptr, struct Client *source_p, int mask, const char flag)
{
  dlink_node *node = NULL;
  char lmodebuf[MODEBUFLEN];
  const char *lpara[MAXMODEPARAMS];
  int count = 0, lcount = 0;

  mbuf = lmodebuf;
  *mbuf++ = '-';

  for (lcount = 0; lcount < MAXMODEPARAMS; ++lcount)
    lpara[lcount] = "";

  sendbuf[0] = '\0';

  DLINK_FOREACH(node, chptr->members.head)
  {
    struct Membership *member = node->data;

    if ((member->flags & mask) == 0)
      continue;

    member->flags &= ~mask;

    lpara[count++] = member->client_p->name;

    *mbuf++ = flag;

    if (count >= MAXMODEPARAMS)
    {
      for (lcount = 0; lcount < MAXMODEPARAMS; ++lcount)
      {
        if (*lpara[lcount] == '\0')
          break;

        strlcat(sendbuf, " ", sizeof(sendbuf));
        strlcat(sendbuf, lpara[lcount], sizeof(sendbuf));
        lpara[lcount] = "";
      }

      *mbuf = '\0';
      sendto_channel_local(NULL, chptr, 0, 0, 0, ":%s MODE %s %s%s",
                           (IsHidden(source_p) ||
                           ConfigServerHide.hide_servers) ?
                           me.name : source_p->name,
                           chptr->name, lmodebuf, sendbuf);
      mbuf = lmodebuf;
      *mbuf++ = '-';
      count = 0;
      sendbuf[0] = '\0';
    }
  }

  if (count)
  {
    *mbuf = '\0';

    for (lcount = 0; lcount < MAXMODEPARAMS; ++lcount)
    {
      if (*lpara[lcount] == '\0')
        break;

      strlcat(sendbuf, " ", sizeof(sendbuf));
      strlcat(sendbuf, lpara[lcount], sizeof(sendbuf));
    }

    sendto_channel_local(NULL, chptr, 0, 0, 0, ":%s MODE %s %s%s",
                         (IsHidden(source_p) || ConfigServerHide.hide_servers) ?
                         me.name : source_p->name, chptr->name, lmodebuf, sendbuf);
  }
}

static struct Message join_msgtab =
{
  .cmd = "JOIN",
  .args_min = 2,
  .args_max = MAXPARA,
  .handlers[UNREGISTERED_HANDLER] = m_unregistered,
  .handlers[CLIENT_HANDLER] = m_join,
  .handlers[SERVER_HANDLER] = ms_join,
  .handlers[ENCAP_HANDLER] = m_ignore,
  .handlers[OPER_HANDLER] = m_join
};

static void
module_init(void)
{
  mod_add_cmd(&join_msgtab);
}

static void
module_exit(void)
{
  mod_del_cmd(&join_msgtab);
}

struct module module_entry =
{
  .version = "$Revision$",
  .modinit = module_init,
  .modexit = module_exit,
  .flags   = MODULE_FLAG_CORE
};
Revision:	7355
Committed:	Mon Feb 22 18:59:13 2016 UTC (10 years, 7 months ago) by michael
Content type:	text/x-csrc
File size:	12156 byte(s)
Log Message:	- Cleanup more conversion specifiers
#	User	Rev	Content
1	adx	30	/*
2	michael	2820	* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
3	adx	30	*
4	michael	7006	* Copyright (c) 1997-2016 ircd-hybrid development team
5	adx	30	*
6			* This program is free software; you can redistribute it and/or modify
7			* it under the terms of the GNU General Public License as published by
8			* the Free Software Foundation; either version 2 of the License, or
9			* (at your option) any later version.
10			*
11			* This program is distributed in the hope that it will be useful,
12			* but WITHOUT ANY WARRANTY; without even the implied warranty of
13			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14			* GNU General Public License for more details.
15			*
16			* You should have received a copy of the GNU General Public License
17			* along with this program; if not, write to the Free Software
18	michael	4565	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
19	adx	30	* USA
20			*/
21
22	michael	2820	/*! \file m_join.c
23			* \brief Includes required functions for processing the JOIN command.
24			* \version $Id$
25			*/
26
27	adx	30	#include "stdinc.h"
28	michael	1011	#include "list.h"
29	adx	30	#include "channel.h"
30			#include "channel_mode.h"
31			#include "client.h"
32			#include "hash.h"
33			#include "irc_string.h"
34			#include "ircd.h"
35			#include "numeric.h"
36			#include "send.h"
37	michael	3347	#include "server.h"
38	michael	1309	#include "conf.h"
39	michael	7234	#include "conf_resv.h"
40	adx	30	#include "parse.h"
41			#include "modules.h"
42
43
44	michael	3660	static void set_final_mode(const struct Mode , const struct Mode );
45	adx	30	static void remove_our_modes(struct Channel , struct Client );
46	michael	3660	static void remove_a_mode(struct Channel , struct Client , int, const char);
47	adx	30
48			static char modebuf[MODEBUFLEN];
49			static char parabuf[MODEBUFLEN];
50			static char sendbuf[MODEBUFLEN];
51			static char *mbuf;
52
53	michael	3342	/*! \brief JOIN command handler
54			*
55			* \param source_p Pointer to allocated Client struct from which the message
56			* originally comes from. This can be a local or remote client.
57			* \param parc Integer holding the number of supplied arguments.
58			* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL
59			* pointers.
60			* \note Valid arguments for this command are:
61			* - parv[0] = command
62			* - parv[1] = channel
63			* - parv[2] = channel password (key)
64	adx	30	*/
65	michael	2820	static int
66	michael	3156	m_join(struct Client source_p, int parc, char parv[])
67	adx	30	{
68	michael	632	if (EmptyString(parv[1]))
69	adx	30	{
70	michael	3109	sendto_one_numeric(source_p, &me, ERR_NEEDMOREPARAMS, "JOIN");
71	michael	2820	return 0;
72	adx	30	}
73
74	michael	3937	channel_do_join(source_p, parv[1], parv[2]);
75	michael	2820	return 0;
76	adx	30	}
77
78			/* ms_join()
79			*
80	michael	3096	* inputs - parv[0] = command
81	adx	30	* parv[1] = ts
82			* parv[2] = channel name
83	db	853	* parv[3] = modes (Deprecated)
84	adx	30	* output - none
85			* side effects - handles remote JOIN's sent by servers. In TSora
86	michael	2820	* remote clients are joined using SJOIN, hence a
87	adx	30	* JOIN sent by a server on behalf of a client is an error.
88			* here, the initial code is in to take an extra parameter
89			* and use it for the TimeStamp on a new channel.
90			*/
91	michael	2820	static int
92	michael	3156	ms_join(struct Client source_p, int parc, char parv[])
93	adx	30	{
94	michael	7330	uintmax_t newts = 0;
95			uintmax_t oldts = 0;
96	michael	632	int keep_our_modes = 1;
97			int keep_new_modes = 1;
98			int isnew = 0;
99			const char *servername = NULL;
100			struct Channel *chptr = NULL;
101			struct Mode mode, *oldmode;
102	adx	30
103	michael	3617	if (!IsClient(source_p))
104	michael	3637	return 0;
105	michael	3617
106	michael	3371	if (parc == 2 && !strcmp(parv[1], "0"))
107	adx	30	{
108	michael	3912	channel_do_join_0(source_p);
109	michael	2820	return 0;
110	adx	30	}
111
112	michael	1474	if (parc < 4)
113	michael	2820	return 0;
114	adx	30
115	michael	6373	if (!channel_check_name(parv[2], 0))
116	michael	632	{
117	michael	1618	sendto_realops_flags(UMODE_DEBUG, L_ALL, SEND_NOTICE,
118	michael	3162	"*** Too long or invalid channel name from %s(via %s): %s",
119			source_p->name, source_p->from->name, parv[2]);
120	michael	2820	return 0;
121	michael	632	}
122	adx	30
123			mbuf = modebuf;
124			mode.mode = mode.limit = 0;
125			mode.key[0] = '\0';
126
127	michael	632	if ((chptr = hash_find_channel(parv[2])) == NULL)
128			{
129			isnew = 1;
130	michael	6373	chptr = channel_make(parv[2]);
131	michael	632	}
132
133	michael	7330	newts = strtoumax(parv[1], NULL, 10);
134	michael	4818	oldts = chptr->creationtime;
135	adx	30	oldmode = &chptr->mode;
136
137	michael	4340	if (ConfigGeneral.ignore_bogus_ts)
138	adx	30	{
139			if (newts < 800000000)
140			{
141	michael	1618	sendto_realops_flags(UMODE_DEBUG, L_ALL, SEND_NOTICE,
142	michael	6782	"*** Bogus TS %ju on %s ignored from %s(via %s)",
143			newts, chptr->name,
144	michael	3169	source_p->name, source_p->from->name);
145	adx	30
146			newts = (oldts == 0) ? 0 : 800000000;
147			}
148			}
149			else
150			{
151			if (!newts && !isnew && oldts)
152			{
153	michael	6759	sendto_channel_local(NULL, chptr, 0, 0, 0,
154	michael	6782	":%s NOTICE %s :*** Notice -- TS for %s changed from %ju to 0",
155			me.name, chptr->name, chptr->name, oldts);
156	michael	6318	sendto_realops_flags(UMODE_SERVNOTICE, L_ALL, SEND_NOTICE,
157	michael	6782	"Server %s changing TS on %s from %ju to 0",
158			source_p->name, chptr->name, oldts);
159	adx	30	}
160			}
161
162			if (isnew)
163	michael	4818	chptr->creationtime = newts;
164	adx	30	else if (newts == 0 \|\| oldts == 0)
165	michael	4818	chptr->creationtime = 0;
166	adx	30	else if (newts == oldts)
167			;
168			else if (newts < oldts)
169			{
170	michael	894	keep_our_modes = 0;
171	michael	4818	chptr->creationtime = newts;
172	adx	30	}
173			else
174	michael	894	keep_new_modes = 0;
175	adx	30
176			if (!keep_new_modes)
177			mode = *oldmode;
178			else if (keep_our_modes)
179			{
180			mode.mode \|= oldmode->mode;
181	michael	3660
182	adx	30	if (oldmode->limit > mode.limit)
183			mode.limit = oldmode->limit;
184			if (strcmp(mode.key, oldmode->key) < 0)
185	michael	3334	strlcpy(mode.key, oldmode->key, sizeof(mode.key));
186	adx	30	}
187
188			set_final_mode(&mode, oldmode);
189			chptr->mode = mode;
190
191			/* Lost the TS, other side wins, so remove modes on this side */
192			if (!keep_our_modes)
193			{
194			remove_our_modes(chptr, source_p);
195	michael	873
196	michael	1203	if (chptr->topic[0])
197	michael	873	{
198	michael	3941	channel_set_topic(chptr, "", "", 0, 0);
199	michael	6759	sendto_channel_local(NULL, chptr, 0, 0, 0, ":%s TOPIC %s :",
200	michael	873	(IsHidden(source_p) \|\|
201			ConfigServerHide.hide_servers) ?
202	michael	4618	me.name : source_p->name, chptr->name);
203	michael	873	}
204
205	michael	6759	sendto_channel_local(NULL, chptr, 0, 0, 0,
206	michael	6782	":%s NOTICE %s :*** Notice -- TS for %s changed from %ju to %ju",
207	michael	4618	me.name, chptr->name, chptr->name,
208	michael	6782	oldts, newts);
209	adx	30	}
210	michael	2820
211	michael	3660	if (*modebuf)
212	adx	30	{
213			servername = (ConfigServerHide.hide_servers \|\| IsHidden(source_p)) ?
214			me.name : source_p->name;
215
216			/* This _SHOULD_ be to ALL_MEMBERS
217			* It contains only +imnpstlk, etc */
218	michael	6759	sendto_channel_local(NULL, chptr, 0, 0, 0, ":%s MODE %s %s %s",
219	michael	4618	servername, chptr->name, modebuf, parabuf);
220	adx	30	}
221
222			if (!IsMember(source_p, chptr))
223			{
224	michael	894	add_user_to_channel(chptr, source_p, 0, 1);
225	michael	3660
226	michael	6759	sendto_channel_local(NULL, chptr, 0, CAP_EXTENDED_JOIN, 0, ":%s!%s@%s JOIN %s %s :%s",
227			source_p->name, source_p->username,
228	michael	6827	source_p->host, chptr->name, source_p->account, source_p->info);
229	michael	6759	sendto_channel_local(NULL, chptr, 0, 0, CAP_EXTENDED_JOIN, ":%s!%s@%s JOIN :%s",
230			source_p->name, source_p->username,
231			source_p->host, chptr->name);
232	michael	4792
233	michael	1734	if (source_p->away[0])
234	michael	6759	sendto_channel_local(source_p, chptr, 0, CAP_AWAY_NOTIFY, 0,
235			":%s!%s@%s AWAY :%s",
236			source_p->name, source_p->username,
237			source_p->host, source_p->away);
238	adx	30	}
239
240	michael	6782	sendto_server(source_p, 0, 0, ":%s JOIN %ju %s +",
241			source_p->id, chptr->creationtime, chptr->name);
242	michael	2820	return 0;
243	adx	30	}
244
245	michael	1175	/* set_final_mode
246	adx	30	*
247	michael	1175	* inputs - channel mode
248			* - old channel mode
249	adx	30	* output - NONE
250	michael	1175	* side effects - walk through all the channel modes turning off modes
251			* that were on in oldmode but aren't on in mode.
252			* Then walk through turning on modes that are on in mode
253			* but were not set in oldmode.
254	adx	30	*/
255			static void
256	michael	3660	set_final_mode(const struct Mode mode, const struct Mode oldmode)
257	adx	30	{
258			char *pbuf = parabuf;
259	michael	3660	int what = 0, len = 0;
260	adx	30
261	michael	3660	for (const struct mode_letter *tab = chan_modes; tab->letter; ++tab)
262	adx	30	{
263	michael	4884	if ((tab->mode & mode->mode) && !(tab->mode & oldmode->mode))
264	adx	30	{
265			if (what != 1)
266			{
267			*mbuf++ = '+';
268			what = 1;
269			}
270	michael	3660
271	michael	1175	*mbuf++ = tab->letter;
272	adx	30	}
273			}
274
275	michael	3660	for (const struct mode_letter *tab = chan_modes; tab->letter; ++tab)
276	adx	30	{
277	michael	4884	if ((tab->mode & oldmode->mode) && !(tab->mode & mode->mode))
278	adx	30	{
279			if (what != -1)
280			{
281			*mbuf++ = '-';
282			what = -1;
283			}
284	michael	3660
285	michael	1175	*mbuf++ = tab->letter;
286	adx	30	}
287			}
288
289	michael	3660	if (oldmode->limit && mode->limit == 0)
290	adx	30	{
291			if (what != -1)
292			{
293			*mbuf++ = '-';
294			what = -1;
295			}
296	michael	3660
297	adx	30	*mbuf++ = 'l';
298			}
299
300	michael	4884	if (oldmode->key[0] && mode->key[0] == '\0')
301	adx	30	{
302			if (what != -1)
303			{
304			*mbuf++ = '-';
305			what = -1;
306			}
307	michael	3660
308	adx	30	*mbuf++ = 'k';
309	michael	1793	len = sprintf(pbuf, "%s ", oldmode->key);
310	adx	30	pbuf += len;
311			}
312
313	michael	3660	if (mode->limit && oldmode->limit != mode->limit)
314	adx	30	{
315			if (what != 1)
316			{
317			*mbuf++ = '+';
318			what = 1;
319			}
320	michael	3660
321	adx	30	*mbuf++ = 'l';
322	michael	7355	len = sprintf(pbuf, "%u ", mode->limit);
323	adx	30	pbuf += len;
324			}
325
326			if (mode->key[0] && strcmp(oldmode->key, mode->key))
327			{
328			if (what != 1)
329			{
330			*mbuf++ = '+';
331			what = 1;
332			}
333	michael	3660
334	adx	30	*mbuf++ = 'k';
335	michael	1793	len = sprintf(pbuf, "%s ", mode->key);
336	adx	30	pbuf += len;
337			}
338	michael	3660
339	adx	30	*mbuf = '\0';
340			}
341
342			/* remove_our_modes()
343			*
344			* inputs - pointer to channel to remove modes from
345			* - client pointer
346			* output - NONE
347			* side effects - Go through the local members, remove all their
348			* chanop modes etc., this side lost the TS.
349			*/
350			static void
351			remove_our_modes(struct Channel chptr, struct Client source_p)
352			{
353			remove_a_mode(chptr, source_p, CHFL_CHANOP, 'o');
354			remove_a_mode(chptr, source_p, CHFL_HALFOP, 'h');
355			remove_a_mode(chptr, source_p, CHFL_VOICE, 'v');
356			}
357
358			/* remove_a_mode()
359			*
360			* inputs -
361			* output - NONE
362			* side effects - remove ONE mode from a channel
363			*/
364			static void
365	michael	3660	remove_a_mode(struct Channel chptr, struct Client source_p, int mask, const char flag)
366	adx	30	{
367	michael	4915	dlink_node *node = NULL;
368	adx	30	char lmodebuf[MODEBUFLEN];
369			const char *lpara[MAXMODEPARAMS];
370	michael	3660	int count = 0, lcount = 0;
371	adx	30
372			mbuf = lmodebuf;
373			*mbuf++ = '-';
374
375	michael	3660	for (lcount = 0; lcount < MAXMODEPARAMS; ++lcount)
376	adx	30	lpara[lcount] = "";
377	michael	3660
378	adx	30	sendbuf[0] = '\0';
379
380	michael	4915	DLINK_FOREACH(node, chptr->members.head)
381	adx	30	{
382	michael	4915	struct Membership *member = node->data;
383	adx	30
384	michael	4815	if ((member->flags & mask) == 0)
385	adx	30	continue;
386
387	michael	4815	member->flags &= ~mask;
388	adx	30
389	michael	4815	lpara[count++] = member->client_p->name;
390	adx	30
391			*mbuf++ = flag;
392
393			if (count >= MAXMODEPARAMS)
394			{
395	michael	3660	for (lcount = 0; lcount < MAXMODEPARAMS; ++lcount)
396	adx	30	{
397			if (*lpara[lcount] == '\0')
398			break;
399
400			strlcat(sendbuf, " ", sizeof(sendbuf));
401			strlcat(sendbuf, lpara[lcount], sizeof(sendbuf));
402			lpara[lcount] = "";
403			}
404
405			*mbuf = '\0';
406	michael	6759	sendto_channel_local(NULL, chptr, 0, 0, 0, ":%s MODE %s %s%s",
407	adx	30	(IsHidden(source_p) \|\|
408			ConfigServerHide.hide_servers) ?
409			me.name : source_p->name,
410	michael	4618	chptr->name, lmodebuf, sendbuf);
411	adx	30	mbuf = lmodebuf;
412			*mbuf++ = '-';
413			count = 0;
414			sendbuf[0] = '\0';
415			}
416			}
417
418	michael	3342	if (count)
419	adx	30	{
420			*mbuf = '\0';
421	michael	3660
422			for (lcount = 0; lcount < MAXMODEPARAMS; ++lcount)
423	adx	30	{
424			if (*lpara[lcount] == '\0')
425			break;
426
427			strlcat(sendbuf, " ", sizeof(sendbuf));
428			strlcat(sendbuf, lpara[lcount], sizeof(sendbuf));
429			}
430	michael	3342
431	michael	6759	sendto_channel_local(NULL, chptr, 0, 0, 0, ":%s MODE %s %s%s",
432	adx	30	(IsHidden(source_p) \|\| ConfigServerHide.hide_servers) ?
433	michael	4618	me.name : source_p->name, chptr->name, lmodebuf, sendbuf);
434	adx	30	}
435			}
436	michael	1230
437	michael	3331	static struct Message join_msgtab =
438			{
439	michael	5881	.cmd = "JOIN",
440			.args_min = 2,
441			.args_max = MAXPARA,
442			.handlers[UNREGISTERED_HANDLER] = m_unregistered,
443			.handlers[CLIENT_HANDLER] = m_join,
444			.handlers[SERVER_HANDLER] = ms_join,
445			.handlers[ENCAP_HANDLER] = m_ignore,
446			.handlers[OPER_HANDLER] = m_join
447	michael	1230	};
448
449			static void
450			module_init(void)
451			{
452			mod_add_cmd(&join_msgtab);
453			}
454
455			static void
456			module_exit(void)
457			{
458			mod_del_cmd(&join_msgtab);
459			}
460
461	michael	3331	struct module module_entry =
462			{
463	michael	1230	.version = "$Revision$",
464			.modinit = module_init,
465			.modexit = module_exit,
466			.flags = MODULE_FLAG_CORE
467			};