modules/core/m_join.c

/*
 *  ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
 *  m_join.c: Joins a channel.
 *
 *  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 "tools.h"
#include "handlers.h"
#include "channel.h"
#include "channel_mode.h"
#include "client.h"
#include "common.h"   /* bleah */
#include "hash.h"
#include "irc_string.h"
#include "sprintf_irc.h"
#include "ircd.h"
#include "list.h"
#include "numeric.h"
#include "send.h"
#include "s_serv.h"
#include "s_conf.h"
#include "msg.h"
#include "parse.h"
#include "modules.h"


struct entity
{
  struct Channel *chptr;
  char *key;
  int flags;
};

static struct entity targets[IRCD_BUFSIZE];
static int ntargets, join_0;

static int build_target_list(struct Client *, struct Client *, char *, char *);
static int is_target(struct Channel *);

static void m_join(struct Client *, struct Client *, int, char **);
static void ms_join(struct Client *, struct Client *, int, char **);
static void do_join_0(struct Client *client_p, struct Client *source_p);

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

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

struct Message join_msgtab = {
  "JOIN", 0, 0, 2, 0, MFLG_SLOW, 0,
  {m_unregistered, m_join, ms_join, m_ignore, m_join, m_ignore}
};

#ifndef STATIC_MODULES

void
_modinit(void)
{
  mod_add_cmd(&join_msgtab);
}

void
_moddeinit(void)
{
  mod_del_cmd(&join_msgtab);
}

const char *_version = "$Revision$";
#endif

/* m_join()
 *      parv[0] = sender prefix
 *      parv[1] = channel
 *      parv[2] = channel password (key)
 */
static void
m_join(struct Client *client_p, struct Client *source_p,
       int parc, char *parv[])
{
  struct Channel *chptr = NULL;
  char *key = NULL;
  int i, a;
  unsigned int flags = 0;
  int successful_join_count = 0; /* Number of channels successfully joined */

  if (*parv[1] == '\0')
  {
    sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
               me.name, source_p->name, "JOIN");
    return;
  }

  build_target_list(client_p, source_p, parv[1], ((parc > 2) ? parv[2] : NULL));

  if ((a = (join_0 >= 0) ? join_0 : 0))
    do_join_0(client_p, source_p);

  for (; a < ntargets; a++)
  {
    chptr = targets[a].chptr;
    key = targets[a].key;
    flags = targets[a].flags;

    if (IsMember(source_p, chptr))
      continue;

    if (!IsOper(source_p))
      check_spambot_warning(source_p, chptr->chname);

    /*
     * can_join checks for +i key, bans.
     */
    if ((i = can_join(source_p, chptr, key)))
    {
      sendto_one(source_p, form_str(i), me.name, source_p->name, chptr->chname);
      continue;
    }

    ++successful_join_count;

    /* add the user to the channel */
    add_user_to_channel(chptr, source_p, flags, YES);

    /*
    **  Set timestamp if appropriate, and propagate
    */
    if (flags & CHFL_CHANOP)
    {
      chptr->channelts = CurrentTime;
      chptr->mode.mode |= MODE_TOPICLIMIT;
      chptr->mode.mode |= MODE_NOPRIVMSGS;

      sendto_server(client_p, source_p, chptr, CAP_TS6, NOCAPS, LL_ICLIENT,
                    ":%s SJOIN %lu %s +nt :@%s",
                    me.id, (unsigned long)chptr->channelts,
                    chptr->chname, source_p->id);
      sendto_server(client_p, source_p, chptr, NOCAPS, CAP_TS6, LL_ICLIENT,
                    ":%s SJOIN %lu %s +nt :@%s",
                    me.name, (unsigned long)chptr->channelts,
                    chptr->chname, parv[0]);
      /*
       * notify all other users on the new channel
       */
      /* XXX just exactly who is going to be =on= this new channel
       * other than just the creator at this time? ? ?
       */
      sendto_channel_local(ALL_MEMBERS, NO, chptr, ":%s!%s@%s JOIN :%s",
                           source_p->name, source_p->username,
                           source_p->host, chptr->chname);

      sendto_channel_local(ALL_MEMBERS, NO, chptr,
                           ":%s MODE %s +nt",
                           me.name, chptr->chname);
    }
    else
    {
      sendto_server(client_p, source_p, chptr, CAP_TS6, NOCAPS, LL_ICLIENT,
                    ":%s JOIN %lu %s +",
                    source_p->id, (unsigned long)chptr->channelts,
                    chptr->chname);
      sendto_server(client_p, source_p, chptr, NOCAPS, CAP_TS6, LL_ICLIENT,
                    ":%s SJOIN %lu %s + :%s",
                    me.name, (unsigned long)chptr->channelts,
                    chptr->chname, source_p->name);

      sendto_channel_local(ALL_MEMBERS, NO, chptr, ":%s!%s@%s JOIN :%s",
                           source_p->name, source_p->username,
                           source_p->host, chptr->chname);
    }

    del_invite(chptr, source_p);

    if (chptr->topic != NULL)
    {
      sendto_one(source_p, form_str(RPL_TOPIC), me.name,
                 source_p->name, chptr->chname, chptr->topic);

      sendto_one(source_p, form_str(RPL_TOPICWHOTIME),
                 me.name, source_p->name, chptr->chname,
                 chptr->topic_info, chptr->topic_time);
    }

    channel_member_names(source_p, chptr, 1);

    if (successful_join_count != 0)
      source_p->localClient->last_join_time = CurrentTime;
  }
}

/* ms_join()
 *
 * inputs       - parv[0] = uid
 *                parv[1] = ts
 *                parv[2] = channel name
 *                parv[3] = modes
 * 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 void 
ms_join(struct Client *client_p, struct Client *source_p,
        int parc, char *parv[])
{
  struct Channel *chptr;
  time_t         newts;
  time_t         oldts;
  static         struct Mode mode, *oldmode;
  int            args = 0;
  int            keep_our_modes = 1;
  int            keep_new_modes = 1;
  int            isnew;
  char           *s;
  const char *servername;

  if ((parv[1][0] == '0') && (parv[1][1] == '\0') && parc == 2)
  {
    do_join_0(client_p, source_p);
    return;
  }

  if (parc < 4)
    return;

  if (*parv[2] == '&')
    return;

  if (!check_channel_name(parv[2]))
    return;

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

  s = parv[3];
  while (*s)
  {
    switch (*(s++))
    {
      case 't':
        mode.mode |= MODE_TOPICLIMIT;
        break;
      case 'n':
        mode.mode |= MODE_NOPRIVMSGS;
        break;
      case 's':
        mode.mode |= MODE_SECRET;
        break;
      case 'm':
        mode.mode |= MODE_MODERATED;
        break;
      case 'i':
        mode.mode |= MODE_INVITEONLY;
        break;
      case 'p':
        mode.mode |= MODE_PRIVATE;
        break;
      case 'k':
        if (parc < 5+args)
          return;

        strlcpy(mode.key, parv[4 + args], sizeof(mode.key));
        args++;
        break;
      case 'l':
        if (parc < 5+args)
          return;

        mode.limit = atoi(parv[4 + args]);
        args++;
        break;
    }
  }

  if ((chptr = get_or_create_channel(source_p, parv[2], &isnew)) == NULL)
    return; /* channel name too long? */

  newts = atol(parv[1]);
  oldts   = chptr->channelts;
  oldmode = &chptr->mode;

  if (ConfigFileEntry.ignore_bogus_ts)
  {
    if (newts < 800000000)
    {
      sendto_realops_flags(UMODE_DEBUG, L_ALL,
                           "*** Bogus TS %lu on %s ignored from %s",
                           (unsigned long)newts, chptr->chname,
                           client_p->name);

      newts = (oldts == 0) ? 0 : 800000000;
    }
  }
  else
  {
    if (!newts && !isnew && oldts)
    {
      sendto_channel_local(ALL_MEMBERS, NO, chptr,
                             ":%s NOTICE %s :*** Notice -- TS for %s changed from %lu to 0",
                             me.name, chptr->chname, chptr->chname, (unsigned long)oldts);
      sendto_realops_flags(UMODE_ALL, L_ALL,
                           "Server %s changing TS on %s from %lu to 0",
                           source_p->name, chptr->chname, (unsigned long)oldts);
    }
  }

  if (isnew)
    chptr->channelts = newts;
  else if (newts == 0 || oldts == 0)
    chptr->channelts = 0;
  else if (newts == oldts)
    ;
  else if (newts < oldts)
  {
    keep_our_modes = NO;
    chptr->channelts = newts;
  }
  else
    keep_new_modes = NO;

  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)
      strcpy(mode.key, oldmode->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);
    sendto_channel_local(ALL_MEMBERS, NO, chptr,
                         ":%s NOTICE %s :*** Notice -- TS for %s changed from %lu to %lu",
                          me.name, chptr->chname, chptr->chname,
                         (unsigned long)oldts, (unsigned long)newts);
  }
   
  if (*modebuf != '\0')
  {
    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(ALL_MEMBERS, NO, chptr, ":%s MODE %s %s %s",
                         servername, chptr->chname, modebuf, parabuf);
  }

  if (!IsMember(source_p, chptr))
  {
    add_user_to_channel(chptr, source_p, 0, YES);
    sendto_channel_local(ALL_MEMBERS, NO, chptr, ":%s!%s@%s JOIN :%s",
                         source_p->name, source_p->username,
                         source_p->host, chptr->chname);
  }

  sendto_server(client_p, NULL, chptr, CAP_TS6, NOCAPS, NOFLAGS,
                ":%s JOIN %lu %s +",
                ID(source_p), (unsigned long)chptr->channelts, chptr->chname);
  sendto_server(client_p, NULL, chptr, NOCAPS, CAP_TS6, NOFLAGS,
                ":%s SJOIN %lu %s + :%s",
                source_p->servptr->name, (unsigned long)chptr->channelts,
                chptr->chname, source_p->name);
}

/* do_join_0()
 *
 * inputs       - pointer to client doing join 0
 * output       - NONE
 * side effects - Use has decided to join 0. This is legacy
 *                from the days when channels were numbers not names. *sigh*
 *                There is a bunch of evilness necessary here due to
 *                anti spambot code.
 */
static void
do_join_0(struct Client *client_p, struct Client *source_p)
{
  struct Channel *chptr = NULL;
  dlink_node *ptr, *ptr_next;

  if (source_p->channel.head != NULL &&
      MyConnect(source_p) && !IsOper(source_p))
    check_spambot_warning(source_p, NULL);

  DLINK_FOREACH_SAFE(ptr, ptr_next, source_p->channel.head)
  {
    chptr = ((struct Membership *)ptr->data)->chptr;

    /* if the last occurance of this chan is before a 0, leave */
    if (is_target(chptr) < join_0)
    {
      sendto_server(client_p, NULL, chptr, CAP_TS6, NOCAPS, NOFLAGS,
                    ":%s PART %s", ID(source_p), chptr->chname);
      sendto_server(client_p, NULL, chptr, NOCAPS, CAP_TS6, NOFLAGS,
                    ":%s PART %s", source_p->name, chptr->chname);
      sendto_channel_local(ALL_MEMBERS, NO, chptr, ":%s!%s@%s PART %s",
                           source_p->name, source_p->username,
                           source_p->host, chptr->chname);
      remove_user_from_channel(ptr->data);
    }
  }
}

/* build_target_list()
 *
 * inputs       - pointer to given client_p (server)
 *              - pointer to given source (oper/client etc.)
 *              - pointer to list of channels
 *              - pointer to list of keys
 * output       - number of valid entities
 * side effects - targets list is modified to contain a list of
 *                pointers to channels.  display whatever errors
 *                that result from a join attempt to the user.
 *
 */
static int
build_target_list(struct Client *client_p, struct Client *source_p,
                  char *channels, char *keys)
{
  int error_reported, flags = 0;
  char *p, *p2, *chan, *key = keys;
  struct Channel *chptr = NULL;

  ntargets = error_reported = 0;
  join_0 = -1;

  for (chan = strtoken(&p, channels, ","); chan;
       key  = (key) ? strtoken(&p2, keys, ",") : NULL,
       chan = strtoken(&p, NULL, ","))
  {
    if (!check_channel_name(chan))
    {
      sendto_one(source_p, form_str(ERR_BADCHANNAME),
                 me.name, source_p->name, chan);
      continue;
    }

    if (*chan == '0' && !atoi(chan))
    {
      targets[ntargets].chptr = NULL;
      targets[ntargets].key = NULL;
      targets[ntargets++].flags = 0;

      join_0 = ntargets;
      continue;
    }
    else if (!IsChanPrefix(*chan))
    {
      sendto_one(source_p, form_str(ERR_NOSUCHCHANNEL),
                 me.name, source_p->name, chan);
      continue;
    }

    if (ConfigChannel.disable_local_channels && (*chan == '&'))
    {
      sendto_one(source_p, form_str(ERR_NOSUCHCHANNEL),
                 me.name, source_p->name, chan);
      continue;
    }

    if (strlen(chan) > LOCAL_CHANNELLEN)
    {
      sendto_one(source_p, form_str(ERR_BADCHANNAME),
                 me.name, source_p->name, chan);
      continue;
    }

    if (!IsExemptResv(source_p) &&
        !(IsOper(source_p) && ConfigFileEntry.oper_pass_resv) &&
        (!hash_find_resv(chan) == ConfigChannel.restrict_channels))
    {
      sendto_one(source_p, form_str(ERR_BADCHANNAME),
                 me.name, source_p->name, chan);
      sendto_realops_flags(UMODE_SPY, L_ALL,
                           "User %s (%s@%s) is attempting to join locally juped channel %s",
                           source_p->name, source_p->username, source_p->host, chan);
      continue;
    }

    if ((dlink_list_length(&source_p->channel)+ntargets >= ConfigChannel.max_chans_per_user) &&
        (!IsOper(source_p) || (dlink_list_length(&source_p->channel)+ntargets >=
                               ConfigChannel.max_chans_per_user * 3)))
    {
      if (!error_reported++)
        sendto_one(source_p, form_str(ERR_TOOMANYCHANNELS),
                   me.name, source_p->name, chan);
      continue;
    }

    if ((chptr = hash_find_channel(chan)) != NULL)
    {
      if (splitmode && !IsOper(source_p) && (*chan != '&') &&
          ConfigChannel.no_join_on_split)
      {
        sendto_one(source_p, form_str(ERR_UNAVAILRESOURCE),
                   me.name, source_p->name, chan);
        continue;
      }

      if (dlink_list_length(&chptr->members) == 0)
        flags = CHFL_CHANOP;
      else
        flags = 0;
    }
    else
    {
      if (splitmode && !IsOper(source_p) && (*chan != '&') &&
          (ConfigChannel.no_create_on_split || ConfigChannel.no_join_on_split))
      {
        sendto_one(source_p, form_str(ERR_UNAVAILRESOURCE),
                   me.name, source_p->name, chan);
        continue;
      }

      flags = CHFL_CHANOP;
      if (!ServerInfo.hub)
      {
        if ((*chan != '&') && uplink && IsCapable(uplink, CAP_LL))
        {
          sendto_one(uplink, ":%s CBURST %s %s %s",
                     me.name, chan, source_p->name, key ? key : "");
          continue;
        }
      }

      if ((chptr = get_or_create_channel(source_p, chan, NULL)) == NULL)
      {
        sendto_one(source_p, form_str(ERR_UNAVAILRESOURCE),
                   me.name, source_p->name, chan);
        continue;
      }
    }

    if (is_target(chptr))
      continue;

    targets[ntargets].chptr = chptr;
    targets[ntargets].key = key;
    targets[ntargets++].flags = flags;
  }

  return ((ntargets) ? 1 : 0);
}

/* is_target()
 *
 * inputs       - channel to check
 * output       - YES if duplicate pointer in table, NO if not.
 *                note, this does the canonize using pointers
 * side effects - NONE
 */
static int
is_target(struct Channel *chptr)
{
  int i;

  /*
   * we step through this backwards for do_join_0()s sake.
   * if the returned value is > join_0 (the highest 0 in the targets)
   * we know they are supposed to stay in that channel.
   */
  for (i = ntargets-1; i >=0; i--)
  {
    if (targets[i].chptr == chptr)
      return i;
  }

  return 0;
}

/* set_final_mode()
 *
 * inputs       - pointer to mode to setup
 *              - pointer to old mode
 * output       - NONE
 * side effects -
 */
static const struct mode_letter
{
  unsigned int mode;
  unsigned char letter;
} flags[] = {
  { MODE_NOPRIVMSGS, 'n' },
  { MODE_TOPICLIMIT, 't' },
  { MODE_SECRET,     's' },
  { MODE_MODERATED,  'm' },
  { MODE_INVITEONLY, 'i' },
  { MODE_PRIVATE,    'p' },
  { 0, '\0' }
};

static void
set_final_mode(struct Mode *mode, struct Mode *oldmode)
{
  char *pbuf = parabuf;
  int what   = 0;
  int len;
  int i;

  for (i = 0; flags[i].letter; i++)
  {
    if ((flags[i].mode & mode->mode) &&
        !(flags[i].mode & oldmode->mode))
    {
      if (what != 1)
      {
        *mbuf++ = '+';
        what = 1;
      }
      *mbuf++ = flags[i].letter;
    }
  }

  for (i = 0; flags[i].letter; i++)
  {
    if ((flags[i].mode & oldmode->mode) &&
        !(flags[i].mode & mode->mode))
    {
      if (what != -1)
      {
        *mbuf++ = '-';
        what = -1;
      }
      *mbuf++ = flags[i].letter;
    }
  }

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

  if (oldmode->key[0] && !mode->key[0])
  {
    if (what != -1)
    {
      *mbuf++ = '-';
      what = -1;
    }
    *mbuf++ = 'k';
    len = ircsprintf(pbuf, "%s ", oldmode->key);
    pbuf += len;
  }

  if (mode->limit != 0 && oldmode->limit != mode->limit)
  {
    if (what != 1)
    {
      *mbuf++ = '+';
      what = 1;
    }
    *mbuf++ = 'l';
    len = ircsprintf(pbuf, "%d ", mode->limit);
    pbuf += len;
  }

  if (mode->key[0] && strcmp(oldmode->key, mode->key))
  {
    if (what != 1)
    {
      *mbuf++ = '+';
      what = 1;
    }
    *mbuf++ = 'k';
    len = ircsprintf(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');
#ifdef HALFOPS
  remove_a_mode(chptr, source_p, CHFL_HALFOP, 'h');
#endif
  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, char flag)
{
  dlink_node *ptr;
  struct Membership *ms;
  char lmodebuf[MODEBUFLEN];
  const char *lpara[MAXMODEPARAMS];
  int count = 0;
  int lcount;

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

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

  DLINK_FOREACH(ptr, chptr->members.head)
  {
    ms = ptr->data;

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

    ms->flags &= ~mask;

    lpara[count++] = ms->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(ALL_MEMBERS, NO, chptr,
                           ":%s MODE %s %s%s",
                           (IsHidden(source_p) ||
                           ConfigServerHide.hide_servers) ?
                           me.name : source_p->name,
                           chptr->chname, lmodebuf, sendbuf);
      mbuf = lmodebuf;
      *mbuf++ = '-';
      count = 0;
      sendbuf[0] = '\0';
    }
  }

  if (count != 0)
  {
    *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(ALL_MEMBERS, NO, chptr,
                         ":%s MODE %s %s%s",
                         (IsHidden(source_p) || ConfigServerHide.hide_servers) ?
                         me.name : source_p->name,
                         chptr->chname, lmodebuf, sendbuf);
  }
}

Revision:	393
Committed:	Fri Feb 3 15:50:47 2006 UTC (18 years, 2 months ago) by michael
Content type:	text/x-csrc
Original Path:	*ircd-hybrid-7.2/modules/core/m_join.c*
File size:	21577 byte(s)
Log Message:	- Backported max_chans_per_user fix from HEAD
#	User	Rev	Content
1	adx	30	/*
2			* ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
3			* m_join.c: Joins a channel.
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			#include "tools.h"
27			#include "handlers.h"
28			#include "channel.h"
29			#include "channel_mode.h"
30			#include "client.h"
31			#include "common.h" /* bleah */
32			#include "hash.h"
33			#include "irc_string.h"
34			#include "sprintf_irc.h"
35			#include "ircd.h"
36			#include "list.h"
37			#include "numeric.h"
38			#include "send.h"
39			#include "s_serv.h"
40			#include "s_conf.h"
41			#include "msg.h"
42			#include "parse.h"
43			#include "modules.h"
44
45
46			struct entity
47			{
48			struct Channel *chptr;
49			char *key;
50			int flags;
51			};
52
53	michael	393	static struct entity targets[IRCD_BUFSIZE];
54	adx	30	static int ntargets, join_0;
55
56			static int build_target_list(struct Client , struct Client , char , char );
57			static int is_target(struct Channel *);
58
59			static void m_join(struct Client , struct Client , int, char **);
60			static void ms_join(struct Client , struct Client , int, char **);
61			static void do_join_0(struct Client client_p, struct Client source_p);
62
63			static void set_final_mode(struct Mode , struct Mode );
64			static void remove_our_modes(struct Channel , struct Client );
65			static void remove_a_mode(struct Channel , struct Client , int, char);
66
67			static char modebuf[MODEBUFLEN];
68			static char parabuf[MODEBUFLEN];
69			static char sendbuf[MODEBUFLEN];
70			static char *mbuf;
71
72			struct Message join_msgtab = {
73			"JOIN", 0, 0, 2, 0, MFLG_SLOW, 0,
74			{m_unregistered, m_join, ms_join, m_ignore, m_join, m_ignore}
75			};
76
77			#ifndef STATIC_MODULES
78
79			void
80			_modinit(void)
81			{
82			mod_add_cmd(&join_msgtab);
83			}
84
85			void
86			_moddeinit(void)
87			{
88			mod_del_cmd(&join_msgtab);
89			}
90
91	knight	31	const char *_version = "$Revision$";
92	adx	30	#endif
93
94			/* m_join()
95			* parv[0] = sender prefix
96			* parv[1] = channel
97			* parv[2] = channel password (key)
98			*/
99			static void
100			m_join(struct Client client_p, struct Client source_p,
101			int parc, char *parv[])
102			{
103			struct Channel *chptr = NULL;
104			char *key = NULL;
105			int i, a;
106			unsigned int flags = 0;
107			int successful_join_count = 0; /* Number of channels successfully joined */
108
109			if (*parv[1] == '\0')
110			{
111			sendto_one(source_p, form_str(ERR_NEEDMOREPARAMS),
112			me.name, source_p->name, "JOIN");
113			return;
114			}
115
116			build_target_list(client_p, source_p, parv[1], ((parc > 2) ? parv[2] : NULL));
117
118			if ((a = (join_0 >= 0) ? join_0 : 0))
119			do_join_0(client_p, source_p);
120
121			for (; a < ntargets; a++)
122			{
123			chptr = targets[a].chptr;
124			key = targets[a].key;
125			flags = targets[a].flags;
126
127			if (IsMember(source_p, chptr))
128			continue;
129
130			if (!IsOper(source_p))
131			check_spambot_warning(source_p, chptr->chname);
132
133			/*
134			* can_join checks for +i key, bans.
135			*/
136			if ((i = can_join(source_p, chptr, key)))
137			{
138			sendto_one(source_p, form_str(i), me.name, source_p->name, chptr->chname);
139			continue;
140			}
141
142			++successful_join_count;
143
144			/* add the user to the channel */
145			add_user_to_channel(chptr, source_p, flags, YES);
146
147			/*
148			** Set timestamp if appropriate, and propagate
149			*/
150			if (flags & CHFL_CHANOP)
151			{
152			chptr->channelts = CurrentTime;
153			chptr->mode.mode \|= MODE_TOPICLIMIT;
154			chptr->mode.mode \|= MODE_NOPRIVMSGS;
155
156			sendto_server(client_p, source_p, chptr, CAP_TS6, NOCAPS, LL_ICLIENT,
157			":%s SJOIN %lu %s +nt :@%s",
158			me.id, (unsigned long)chptr->channelts,
159			chptr->chname, source_p->id);
160			sendto_server(client_p, source_p, chptr, NOCAPS, CAP_TS6, LL_ICLIENT,
161			":%s SJOIN %lu %s +nt :@%s",
162			me.name, (unsigned long)chptr->channelts,
163			chptr->chname, parv[0]);
164			/*
165			* notify all other users on the new channel
166			*/
167			/* XXX just exactly who is going to be =on= this new channel
168			* other than just the creator at this time? ? ?
169			*/
170			sendto_channel_local(ALL_MEMBERS, NO, chptr, ":%s!%s@%s JOIN :%s",
171			source_p->name, source_p->username,
172			source_p->host, chptr->chname);
173
174			sendto_channel_local(ALL_MEMBERS, NO, chptr,
175			":%s MODE %s +nt",
176			me.name, chptr->chname);
177			}
178			else
179			{
180			sendto_server(client_p, source_p, chptr, CAP_TS6, NOCAPS, LL_ICLIENT,
181			":%s JOIN %lu %s +",
182			source_p->id, (unsigned long)chptr->channelts,
183			chptr->chname);
184			sendto_server(client_p, source_p, chptr, NOCAPS, CAP_TS6, LL_ICLIENT,
185			":%s SJOIN %lu %s + :%s",
186			me.name, (unsigned long)chptr->channelts,
187			chptr->chname, source_p->name);
188
189			sendto_channel_local(ALL_MEMBERS, NO, chptr, ":%s!%s@%s JOIN :%s",
190			source_p->name, source_p->username,
191			source_p->host, chptr->chname);
192			}
193
194			del_invite(chptr, source_p);
195
196			if (chptr->topic != NULL)
197			{
198			sendto_one(source_p, form_str(RPL_TOPIC), me.name,
199			source_p->name, chptr->chname, chptr->topic);
200
201			sendto_one(source_p, form_str(RPL_TOPICWHOTIME),
202			me.name, source_p->name, chptr->chname,
203			chptr->topic_info, chptr->topic_time);
204			}
205
206			channel_member_names(source_p, chptr, 1);
207
208			if (successful_join_count != 0)
209			source_p->localClient->last_join_time = CurrentTime;
210			}
211			}
212
213			/* ms_join()
214			*
215			* inputs - parv[0] = uid
216			* parv[1] = ts
217			* parv[2] = channel name
218			* parv[3] = modes
219			* output - none
220			* side effects - handles remote JOIN's sent by servers. In TSora
221			* remote clients are joined using SJOIN, hence a
222			* JOIN sent by a server on behalf of a client is an error.
223			* here, the initial code is in to take an extra parameter
224			* and use it for the TimeStamp on a new channel.
225			*/
226			static void
227			ms_join(struct Client client_p, struct Client source_p,
228			int parc, char *parv[])
229			{
230			struct Channel *chptr;
231			time_t newts;
232			time_t oldts;
233			static struct Mode mode, *oldmode;
234			int args = 0;
235			int keep_our_modes = 1;
236			int keep_new_modes = 1;
237			int isnew;
238			char *s;
239			const char *servername;
240
241			if ((parv[1][0] == '0') && (parv[1][1] == '\0') && parc == 2)
242			{
243			do_join_0(client_p, source_p);
244			return;
245			}
246
247			if (parc < 4)
248			return;
249
250			if (*parv[2] == '&')
251			return;
252
253			if (!check_channel_name(parv[2]))
254			return;
255
256			mbuf = modebuf;
257			mode.mode = mode.limit = 0;
258			mode.key[0] = '\0';
259
260			s = parv[3];
261			while (*s)
262			{
263			switch (*(s++))
264			{
265			case 't':
266			mode.mode \|= MODE_TOPICLIMIT;
267			break;
268			case 'n':
269			mode.mode \|= MODE_NOPRIVMSGS;
270			break;
271			case 's':
272			mode.mode \|= MODE_SECRET;
273			break;
274			case 'm':
275			mode.mode \|= MODE_MODERATED;
276			break;
277			case 'i':
278			mode.mode \|= MODE_INVITEONLY;
279			break;
280			case 'p':
281			mode.mode \|= MODE_PRIVATE;
282			break;
283			case 'k':
284			if (parc < 5+args)
285			return;
286
287			strlcpy(mode.key, parv[4 + args], sizeof(mode.key));
288			args++;
289			break;
290			case 'l':
291			if (parc < 5+args)
292			return;
293
294			mode.limit = atoi(parv[4 + args]);
295			args++;
296			break;
297			}
298			}
299
300			if ((chptr = get_or_create_channel(source_p, parv[2], &isnew)) == NULL)
301			return; /* channel name too long? */
302
303			newts = atol(parv[1]);
304			oldts = chptr->channelts;
305			oldmode = &chptr->mode;
306
307			if (ConfigFileEntry.ignore_bogus_ts)
308			{
309			if (newts < 800000000)
310			{
311			sendto_realops_flags(UMODE_DEBUG, L_ALL,
312			"*** Bogus TS %lu on %s ignored from %s",
313			(unsigned long)newts, chptr->chname,
314			client_p->name);
315
316			newts = (oldts == 0) ? 0 : 800000000;
317			}
318			}
319			else
320			{
321			if (!newts && !isnew && oldts)
322			{
323			sendto_channel_local(ALL_MEMBERS, NO, chptr,
324			":%s NOTICE %s :*** Notice -- TS for %s changed from %lu to 0",
325			me.name, chptr->chname, chptr->chname, (unsigned long)oldts);
326			sendto_realops_flags(UMODE_ALL, L_ALL,
327			"Server %s changing TS on %s from %lu to 0",
328			source_p->name, chptr->chname, (unsigned long)oldts);
329			}
330			}
331
332			if (isnew)
333			chptr->channelts = newts;
334			else if (newts == 0 \|\| oldts == 0)
335			chptr->channelts = 0;
336			else if (newts == oldts)
337			;
338			else if (newts < oldts)
339			{
340			keep_our_modes = NO;
341			chptr->channelts = newts;
342			}
343			else
344			keep_new_modes = NO;
345
346			if (!keep_new_modes)
347			mode = *oldmode;
348			else if (keep_our_modes)
349			{
350			mode.mode \|= oldmode->mode;
351			if (oldmode->limit > mode.limit)
352			mode.limit = oldmode->limit;
353			if (strcmp(mode.key, oldmode->key) < 0)
354			strcpy(mode.key, oldmode->key);
355			}
356
357			set_final_mode(&mode, oldmode);
358			chptr->mode = mode;
359
360			/* Lost the TS, other side wins, so remove modes on this side */
361			if (!keep_our_modes)
362			{
363			remove_our_modes(chptr, source_p);
364			sendto_channel_local(ALL_MEMBERS, NO, chptr,
365			":%s NOTICE %s :*** Notice -- TS for %s changed from %lu to %lu",
366			me.name, chptr->chname, chptr->chname,
367			(unsigned long)oldts, (unsigned long)newts);
368			}
369
370			if (*modebuf != '\0')
371			{
372			servername = (ConfigServerHide.hide_servers \|\| IsHidden(source_p)) ?
373			me.name : source_p->name;
374
375			/* This _SHOULD_ be to ALL_MEMBERS
376			* It contains only +imnpstlk, etc */
377			sendto_channel_local(ALL_MEMBERS, NO, chptr, ":%s MODE %s %s %s",
378			servername, chptr->chname, modebuf, parabuf);
379			}
380
381			if (!IsMember(source_p, chptr))
382			{
383			add_user_to_channel(chptr, source_p, 0, YES);
384			sendto_channel_local(ALL_MEMBERS, NO, chptr, ":%s!%s@%s JOIN :%s",
385			source_p->name, source_p->username,
386			source_p->host, chptr->chname);
387			}
388
389			sendto_server(client_p, NULL, chptr, CAP_TS6, NOCAPS, NOFLAGS,
390			":%s JOIN %lu %s +",
391			ID(source_p), (unsigned long)chptr->channelts, chptr->chname);
392			sendto_server(client_p, NULL, chptr, NOCAPS, CAP_TS6, NOFLAGS,
393			":%s SJOIN %lu %s + :%s",
394			source_p->servptr->name, (unsigned long)chptr->channelts,
395			chptr->chname, source_p->name);
396			}
397
398			/* do_join_0()
399			*
400			* inputs - pointer to client doing join 0
401			* output - NONE
402			* side effects - Use has decided to join 0. This is legacy
403			* from the days when channels were numbers not names. sigh
404			* There is a bunch of evilness necessary here due to
405			* anti spambot code.
406			*/
407			static void
408			do_join_0(struct Client client_p, struct Client source_p)
409			{
410			struct Channel *chptr = NULL;
411			dlink_node ptr, ptr_next;
412
413			if (source_p->channel.head != NULL &&
414			MyConnect(source_p) && !IsOper(source_p))
415			check_spambot_warning(source_p, NULL);
416
417			DLINK_FOREACH_SAFE(ptr, ptr_next, source_p->channel.head)
418			{
419			chptr = ((struct Membership *)ptr->data)->chptr;
420
421			/* if the last occurance of this chan is before a 0, leave */
422			if (is_target(chptr) < join_0)
423			{
424			sendto_server(client_p, NULL, chptr, CAP_TS6, NOCAPS, NOFLAGS,
425			":%s PART %s", ID(source_p), chptr->chname);
426			sendto_server(client_p, NULL, chptr, NOCAPS, CAP_TS6, NOFLAGS,
427			":%s PART %s", source_p->name, chptr->chname);
428			sendto_channel_local(ALL_MEMBERS, NO, chptr, ":%s!%s@%s PART %s",
429			source_p->name, source_p->username,
430			source_p->host, chptr->chname);
431			remove_user_from_channel(ptr->data);
432			}
433			}
434			}
435
436			/* build_target_list()
437			*
438			* inputs - pointer to given client_p (server)
439			* - pointer to given source (oper/client etc.)
440			* - pointer to list of channels
441			* - pointer to list of keys
442			* output - number of valid entities
443			* side effects - targets list is modified to contain a list of
444			* pointers to channels. display whatever errors
445			* that result from a join attempt to the user.
446			*
447			*/
448			static int
449			build_target_list(struct Client client_p, struct Client source_p,
450			char channels, char keys)
451			{
452			int error_reported, flags = 0;
453			char p, p2, chan, key = keys;
454			struct Channel *chptr = NULL;
455
456			ntargets = error_reported = 0;
457			join_0 = -1;
458
459			for (chan = strtoken(&p, channels, ","); chan;
460			key = (key) ? strtoken(&p2, keys, ",") : NULL,
461			chan = strtoken(&p, NULL, ","))
462			{
463			if (!check_channel_name(chan))
464			{
465			sendto_one(source_p, form_str(ERR_BADCHANNAME),
466			me.name, source_p->name, chan);
467			continue;
468			}
469
470			if (*chan == '0' && !atoi(chan))
471			{
472			targets[ntargets].chptr = NULL;
473			targets[ntargets].key = NULL;
474			targets[ntargets++].flags = 0;
475
476			join_0 = ntargets;
477			continue;
478			}
479			else if (!IsChanPrefix(*chan))
480			{
481			sendto_one(source_p, form_str(ERR_NOSUCHCHANNEL),
482			me.name, source_p->name, chan);
483			continue;
484			}
485
486			if (ConfigChannel.disable_local_channels && (*chan == '&'))
487			{
488			sendto_one(source_p, form_str(ERR_NOSUCHCHANNEL),
489			me.name, source_p->name, chan);
490			continue;
491			}
492
493	michael	100	if (strlen(chan) > LOCAL_CHANNELLEN)
494	adx	30	{
495			sendto_one(source_p, form_str(ERR_BADCHANNAME),
496			me.name, source_p->name, chan);
497			continue;
498			}
499
500			if (!IsExemptResv(source_p) &&
501			!(IsOper(source_p) && ConfigFileEntry.oper_pass_resv) &&
502			(!hash_find_resv(chan) == ConfigChannel.restrict_channels))
503			{
504			sendto_one(source_p, form_str(ERR_BADCHANNAME),
505			me.name, source_p->name, chan);
506			sendto_realops_flags(UMODE_SPY, L_ALL,
507			"User %s (%s@%s) is attempting to join locally juped channel %s",
508			source_p->name, source_p->username, source_p->host, chan);
509			continue;
510			}
511
512	michael	393	if ((dlink_list_length(&source_p->channel)+ntargets >= ConfigChannel.max_chans_per_user) &&
513			(!IsOper(source_p) \|\| (dlink_list_length(&source_p->channel)+ntargets >=
514	adx	30	ConfigChannel.max_chans_per_user * 3)))
515			{
516			if (!error_reported++)
517			sendto_one(source_p, form_str(ERR_TOOMANYCHANNELS),
518			me.name, source_p->name, chan);
519			continue;
520			}
521
522			if ((chptr = hash_find_channel(chan)) != NULL)
523			{
524			if (splitmode && !IsOper(source_p) && (*chan != '&') &&
525			ConfigChannel.no_join_on_split)
526			{
527			sendto_one(source_p, form_str(ERR_UNAVAILRESOURCE),
528			me.name, source_p->name, chan);
529			continue;
530			}
531
532			if (dlink_list_length(&chptr->members) == 0)
533			flags = CHFL_CHANOP;
534			else
535			flags = 0;
536			}
537			else
538			{
539			if (splitmode && !IsOper(source_p) && (*chan != '&') &&
540			(ConfigChannel.no_create_on_split \|\| ConfigChannel.no_join_on_split))
541			{
542			sendto_one(source_p, form_str(ERR_UNAVAILRESOURCE),
543			me.name, source_p->name, chan);
544			continue;
545			}
546
547			flags = CHFL_CHANOP;
548			if (!ServerInfo.hub)
549			{
550			if ((*chan != '&') && uplink && IsCapable(uplink, CAP_LL))
551			{
552			sendto_one(uplink, ":%s CBURST %s %s %s",
553			me.name, chan, source_p->name, key ? key : "");
554			continue;
555			}
556			}
557
558			if ((chptr = get_or_create_channel(source_p, chan, NULL)) == NULL)
559			{
560			sendto_one(source_p, form_str(ERR_UNAVAILRESOURCE),
561			me.name, source_p->name, chan);
562			continue;
563			}
564			}
565
566			if (is_target(chptr))
567			continue;
568
569			targets[ntargets].chptr = chptr;
570			targets[ntargets].key = key;
571			targets[ntargets++].flags = flags;
572			}
573
574			return ((ntargets) ? 1 : 0);
575			}
576
577			/* is_target()
578			*
579			* inputs - channel to check
580			* output - YES if duplicate pointer in table, NO if not.
581			* note, this does the canonize using pointers
582			* side effects - NONE
583			*/
584			static int
585			is_target(struct Channel *chptr)
586			{
587			int i;
588
589			/*
590			* we step through this backwards for do_join_0()s sake.
591			* if the returned value is > join_0 (the highest 0 in the targets)
592			* we know they are supposed to stay in that channel.
593			*/
594			for (i = ntargets-1; i >=0; i--)
595			{
596			if (targets[i].chptr == chptr)
597			return i;
598			}
599
600			return 0;
601			}
602
603			/* set_final_mode()
604			*
605			* inputs - pointer to mode to setup
606			* - pointer to old mode
607			* output - NONE
608			* side effects -
609			*/
610			static const struct mode_letter
611			{
612			unsigned int mode;
613			unsigned char letter;
614			} flags[] = {
615			{ MODE_NOPRIVMSGS, 'n' },
616			{ MODE_TOPICLIMIT, 't' },
617			{ MODE_SECRET, 's' },
618			{ MODE_MODERATED, 'm' },
619			{ MODE_INVITEONLY, 'i' },
620			{ MODE_PRIVATE, 'p' },
621			{ 0, '\0' }
622			};
623
624			static void
625			set_final_mode(struct Mode mode, struct Mode oldmode)
626			{
627			char *pbuf = parabuf;
628			int what = 0;
629			int len;
630			int i;
631
632			for (i = 0; flags[i].letter; i++)
633			{
634			if ((flags[i].mode & mode->mode) &&
635			!(flags[i].mode & oldmode->mode))
636			{
637			if (what != 1)
638			{
639			*mbuf++ = '+';
640			what = 1;
641			}
642			*mbuf++ = flags[i].letter;
643			}
644			}
645
646			for (i = 0; flags[i].letter; i++)
647			{
648			if ((flags[i].mode & oldmode->mode) &&
649			!(flags[i].mode & mode->mode))
650			{
651			if (what != -1)
652			{
653			*mbuf++ = '-';
654			what = -1;
655			}
656			*mbuf++ = flags[i].letter;
657			}
658			}
659
660			if (oldmode->limit != 0 && mode->limit == 0)
661			{
662			if (what != -1)
663			{
664			*mbuf++ = '-';
665			what = -1;
666			}
667			*mbuf++ = 'l';
668			}
669
670			if (oldmode->key[0] && !mode->key[0])
671			{
672			if (what != -1)
673			{
674			*mbuf++ = '-';
675			what = -1;
676			}
677			*mbuf++ = 'k';
678			len = ircsprintf(pbuf, "%s ", oldmode->key);
679			pbuf += len;
680			}
681
682			if (mode->limit != 0 && oldmode->limit != mode->limit)
683			{
684			if (what != 1)
685			{
686			*mbuf++ = '+';
687			what = 1;
688			}
689			*mbuf++ = 'l';
690			len = ircsprintf(pbuf, "%d ", mode->limit);
691			pbuf += len;
692			}
693
694			if (mode->key[0] && strcmp(oldmode->key, mode->key))
695			{
696			if (what != 1)
697			{
698			*mbuf++ = '+';
699			what = 1;
700			}
701			*mbuf++ = 'k';
702			len = ircsprintf(pbuf, "%s ", mode->key);
703			pbuf += len;
704			}
705			*mbuf = '\0';
706			}
707
708			/* remove_our_modes()
709			*
710			* inputs - pointer to channel to remove modes from
711			* - client pointer
712			* output - NONE
713			* side effects - Go through the local members, remove all their
714			* chanop modes etc., this side lost the TS.
715			*/
716			static void
717			remove_our_modes(struct Channel chptr, struct Client source_p)
718			{
719			remove_a_mode(chptr, source_p, CHFL_CHANOP, 'o');
720			#ifdef HALFOPS
721			remove_a_mode(chptr, source_p, CHFL_HALFOP, 'h');
722			#endif
723			remove_a_mode(chptr, source_p, CHFL_VOICE, 'v');
724			}
725
726			/* remove_a_mode()
727			*
728			* inputs -
729			* output - NONE
730			* side effects - remove ONE mode from a channel
731			*/
732			static void
733			remove_a_mode(struct Channel chptr, struct Client source_p,
734			int mask, char flag)
735			{
736			dlink_node *ptr;
737			struct Membership *ms;
738			char lmodebuf[MODEBUFLEN];
739			const char *lpara[MAXMODEPARAMS];
740			int count = 0;
741			int lcount;
742
743			mbuf = lmodebuf;
744			*mbuf++ = '-';
745
746			for (lcount = 0; lcount < MAXMODEPARAMS; lcount++)
747			lpara[lcount] = "";
748			sendbuf[0] = '\0';
749
750			DLINK_FOREACH(ptr, chptr->members.head)
751			{
752			ms = ptr->data;
753
754			if ((ms->flags & mask) == 0)
755			continue;
756
757			ms->flags &= ~mask;
758
759			lpara[count++] = ms->client_p->name;
760
761			*mbuf++ = flag;
762
763			if (count >= MAXMODEPARAMS)
764			{
765			for (lcount = 0; lcount < MAXMODEPARAMS; lcount++)
766			{
767			if (*lpara[lcount] == '\0')
768			break;
769
770			strlcat(sendbuf, " ", sizeof(sendbuf));
771			strlcat(sendbuf, lpara[lcount], sizeof(sendbuf));
772			lpara[lcount] = "";
773			}
774
775			*mbuf = '\0';
776			sendto_channel_local(ALL_MEMBERS, NO, chptr,
777			":%s MODE %s %s%s",
778			(IsHidden(source_p) \|\|
779			ConfigServerHide.hide_servers) ?
780			me.name : source_p->name,
781			chptr->chname, lmodebuf, sendbuf);
782			mbuf = lmodebuf;
783			*mbuf++ = '-';
784			count = 0;
785			sendbuf[0] = '\0';
786			}
787			}
788
789			if (count != 0)
790			{
791			*mbuf = '\0';
792			for (lcount = 0; lcount < MAXMODEPARAMS; lcount++)
793			{
794			if (*lpara[lcount] == '\0')
795			break;
796
797			strlcat(sendbuf, " ", sizeof(sendbuf));
798			strlcat(sendbuf, lpara[lcount], sizeof(sendbuf));
799			}
800			sendto_channel_local(ALL_MEMBERS, NO, chptr,
801			":%s MODE %s %s%s",
802			(IsHidden(source_p) \|\| ConfigServerHide.hide_servers) ?
803			me.name : source_p->name,
804			chptr->chname, lmodebuf, sendbuf);
805			}
806			}
807