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root/svn/ircd-hybrid/trunk/src/channel.c
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Comparing:
ircd-hybrid-7.2/src/channel.c (file contents), Revision 632 by michael, Thu Jun 1 10:53:00 2006 UTC vs.
ircd-hybrid/trunk/src/channel.c (file contents), Revision 4170 by michael, Sat Jul 5 15:32:59 2014 UTC

# Line 1 | Line 1
1   /*
2 < *  ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
2 > *  ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
3   *
4 < *  Copyright (C) 2002 by the past and present ircd coders, and others.
4 > *  Copyright (c) 1997-2014 ircd-hybrid development team
5   *
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
# Line 25 | Line 25
25   */
26  
27   #include "stdinc.h"
28 < #include "tools.h"
28 > #include "list.h"
29   #include "channel.h"
30   #include "channel_mode.h"
31   #include "client.h"
32 #include "common.h"
32   #include "hash.h"
33 + #include "conf.h"
34   #include "hostmask.h"
35   #include "irc_string.h"
36 #include "sprintf_irc.h"
36   #include "ircd.h"
38 #include "list.h"
37   #include "numeric.h"
38 < #include "s_serv.h"             /* captab */
41 < #include "s_user.h"
38 > #include "server.h"
39   #include "send.h"
43 #include "s_conf.h"             /* ConfigFileEntry, ConfigChannel */
40   #include "event.h"
41   #include "memory.h"
42 < #include "balloc.h"
42 > #include "mempool.h"
43 > #include "misc.h"
44 > #include "resv.h"
45  
48 struct config_channel_entry ConfigChannel;
49 dlink_list global_channel_list = { NULL, NULL, 0 };
50 dlink_list lazylink_channels = { NULL, NULL, 0 };
51 BlockHeap *ban_heap;    /*! \todo ban_heap shouldn't be a global var */
52
53 static BlockHeap *topic_heap = NULL;
54 static BlockHeap *member_heap = NULL;
55 static BlockHeap *channel_heap = NULL;
46  
47 + dlink_list channel_list;
48 + mp_pool_t *ban_pool;    /*! \todo ban_pool shouldn't be a global var */
49 +
50 + struct event splitmode_event =
51 + {
52 +  .name = "check_splitmode",
53 +  .handler = check_splitmode,
54 +  .when = 5
55 + };
56 +
57 + static mp_pool_t *member_pool, *channel_pool;
58   static char buf[IRCD_BUFSIZE];
58 static char modebuf[MODEBUFLEN];
59 static char parabuf[MODEBUFLEN];
59  
60  
61   /*! \brief Initializes the channel blockheap, adds known channel CAPAB
62   */
63   void
64 < init_channels(void)
64 > channel_init(void)
65   {
66    add_capability("EX", CAP_EX, 1);
67    add_capability("IE", CAP_IE, 1);
69  add_capability("CHW", CAP_CHW, 1);
68  
69 <  channel_heap = BlockHeapCreate("channel", sizeof(struct Channel), CHANNEL_HEAP_SIZE);
70 <  ban_heap = BlockHeapCreate("ban", sizeof(struct Ban), BAN_HEAP_SIZE);
71 <  topic_heap = BlockHeapCreate("topic", TOPICLEN+1 + USERHOST_REPLYLEN, TOPIC_HEAP_SIZE);
74 <  member_heap = BlockHeapCreate("member", sizeof(struct Membership), CHANNEL_HEAP_SIZE*2);
69 >  channel_pool = mp_pool_new(sizeof(struct Channel), MP_CHUNK_SIZE_CHANNEL);
70 >  ban_pool = mp_pool_new(sizeof(struct Ban), MP_CHUNK_SIZE_BAN);
71 >  member_pool = mp_pool_new(sizeof(struct Membership), MP_CHUNK_SIZE_MEMBER);
72   }
73  
74 < /*! \brief adds a user to a channel by adding another link to the
74 > /*! \brief Adds a user to a channel by adding another link to the
75   *         channels member chain.
76 < * \param chptr      pointer to channel to add client to
77 < * \param who        pointer to client (who) to add
78 < * \param flags      flags for chanops etc
79 < * \param flood_ctrl whether to count this join in flood calculations
76 > * \param chptr      Pointer to channel to add client to
77 > * \param who        Pointer to client (who) to add
78 > * \param flags      Flags for chanops etc
79 > * \param flood_ctrl Whether to count this join in flood calculations
80   */
81   void
82   add_user_to_channel(struct Channel *chptr, struct Client *who,
# Line 90 | Line 87 | add_user_to_channel(struct Channel *chpt
87    if (GlobalSetOptions.joinfloodtime > 0)
88    {
89      if (flood_ctrl)
90 <      chptr->number_joined++;
90 >      ++chptr->number_joined;
91  
92      chptr->number_joined -= (CurrentTime - chptr->last_join_time) *
93        (((float)GlobalSetOptions.joinfloodcount) /
# Line 108 | Line 105 | add_user_to_channel(struct Channel *chpt
105        if (!IsSetJoinFloodNoticed(chptr))
106        {
107          SetJoinFloodNoticed(chptr);
108 <        sendto_realops_flags(UMODE_BOTS, L_ALL,
108 >        sendto_realops_flags(UMODE_BOTS, L_ALL, SEND_NOTICE,
109                               "Possible Join Flooder %s on %s target: %s",
110                               get_client_name(who, HIDE_IP),
111                               who->servptr->name, chptr->chname);
# Line 118 | Line 115 | add_user_to_channel(struct Channel *chpt
115      chptr->last_join_time = CurrentTime;
116    }
117  
118 <  ms = BlockHeapAlloc(member_heap);
118 >  ms = mp_pool_get(member_pool);
119    ms->client_p = who;
120    ms->chptr = chptr;
121    ms->flags = flags;
122  
123    dlinkAdd(ms, &ms->channode, &chptr->members);
124 +
125 +  if (MyConnect(who))
126 +    dlinkAdd(ms, &ms->locchannode, &chptr->locmembers);
127 +
128    dlinkAdd(ms, &ms->usernode, &who->channel);
129   }
130  
131 < /*! \brief deletes an user from a channel by removing a link in the
131 > /*! \brief Deletes an user from a channel by removing a link in the
132   *         channels member chain.
133 < * \param member pointer to Membership struct
133 > * \param member Pointer to Membership struct
134   */
135   void
136   remove_user_from_channel(struct Membership *member)
# Line 138 | Line 139 | remove_user_from_channel(struct Membersh
139    struct Channel *chptr = member->chptr;
140  
141    dlinkDelete(&member->channode, &chptr->members);
142 +
143 +  if (MyConnect(client_p))
144 +    dlinkDelete(&member->locchannode, &chptr->locmembers);
145 +
146    dlinkDelete(&member->usernode, &client_p->channel);
147  
148 <  BlockHeapFree(member_heap, member);
148 >  mp_pool_release(member);
149  
150 <  if (dlink_list_length(&chptr->members) == 0)
150 >  if (chptr->members.head == NULL)
151      destroy_channel(chptr);
152   }
153  
# Line 154 | Line 159 | remove_user_from_channel(struct Membersh
159   */
160   static void
161   send_members(struct Client *client_p, struct Channel *chptr,
162 <             char *lmodebuf, char *lparabuf)
162 >             char *modebuf, char *parabuf)
163   {
164 <  struct Membership *ms;
160 <  dlink_node *ptr;
164 >  const dlink_node *ptr = NULL;
165    int tlen;              /* length of text to append */
166    char *t, *start;       /* temp char pointer */
167  
168 <  start = t = buf + ircsprintf(buf, ":%s SJOIN %lu %s %s %s:",
169 <                               ID_or_name(&me, client_p),
170 <                               (unsigned long)chptr->channelts,
167 <                               chptr->chname, lmodebuf, lparabuf);
168 >  start = t = buf + snprintf(buf, sizeof(buf), ":%s SJOIN %lu %s %s %s:",
169 >                             me.id, (unsigned long)chptr->channelts,
170 >                             chptr->chname, modebuf, parabuf);
171  
172    DLINK_FOREACH(ptr, chptr->members.head)
173    {
174 <    ms = ptr->data;
174 >    const struct Membership *ms = ptr->data;
175  
176 <    tlen = strlen(IsCapable(client_p, CAP_TS6) ?
174 <      ID(ms->client_p) : ms->client_p->name) + 1;  /* nick + space */
176 >    tlen = strlen(ms->client_p->id) + 1;  /* +1 for space */
177  
178      if (ms->flags & CHFL_CHANOP)
179 <      tlen++;
180 < #ifdef HALFOPS
181 <    else if (ms->flags & CHFL_HALFOP)
180 <      tlen++;
181 < #endif
179 >      ++tlen;
180 >    if (ms->flags & CHFL_HALFOP)
181 >      ++tlen;
182      if (ms->flags & CHFL_VOICE)
183 <      tlen++;
183 >      ++tlen;
184  
185 <    /* space will be converted into CR, but we also need space for LF..
186 <     * That's why we use '- 1' here
187 <     * -adx */
188 <    if (t + tlen - buf > sizeof(buf) - 1)
185 >    /*
186 >     * Space will be converted into CR, but we also need space for LF..
187 >     * That's why we use '- 1' here -adx
188 >     */
189 >    if (t + tlen - buf > IRCD_BUFSIZE - 1)
190      {
191 <      *(t - 1) = '\0';  /* kill the space and terminate the string */
191 >      *(t - 1) = '\0';  /* Kill the space and terminate the string */
192        sendto_one(client_p, "%s", buf);
193        t = start;
194      }
195  
196 <    if ((ms->flags & (CHFL_CHANOP | CHFL_HALFOP)))
197 <      *t++ = (!(ms->flags & CHFL_CHANOP) && IsCapable(client_p, CAP_HOPS)) ?
198 <        '%' : '@';
199 <    if ((ms->flags & CHFL_VOICE))
196 >    if (ms->flags & CHFL_CHANOP)
197 >      *t++ = '@';
198 >    if (ms->flags & CHFL_HALFOP)
199 >      *t++ = '%';
200 >    if (ms->flags & CHFL_VOICE)
201        *t++ = '+';
202  
203 <    if (IsCapable(client_p, CAP_TS6))
204 <      strcpy(t, ID(ms->client_p));
203 <    else
204 <      strcpy(t, ms->client_p->name);
203 >    strcpy(t, ms->client_p->id);
204 >
205      t += strlen(t);
206      *t++ = ' ';
207    }
208  
209 <  /* should always be non-NULL unless we have a kind of persistent channels */
210 <  if (chptr->members.head != NULL)
211 <    t--;  /* take the space out */
209 >  /* Should always be non-NULL unless we have a kind of persistent channels */
210 >  if (chptr->members.head)
211 >    t--;  /* Take the space out */
212    *t = '\0';
213    sendto_one(client_p, "%s", buf);
214   }
215  
216 < /*! \brief sends +b/+e/+I
217 < * \param client_p client pointer to server
218 < * \param chptr    pointer to channel
219 < * \param top      pointer to top of mode link list to send
220 < * \param flag     char flag flagging type of mode. Currently this can be 'b', e' or 'I'
216 > /*! \brief Sends +b/+e/+I
217 > * \param client_p Client pointer to server
218 > * \param chptr    Pointer to channel
219 > * \param list     Pointer to list of modes to send
220 > * \param flag     Char flag flagging type of mode. Currently this can be 'b', e' or 'I'
221   */
222   static void
223   send_mode_list(struct Client *client_p, struct Channel *chptr,
224 <               dlink_list *top, char flag)
224 >               const dlink_list *list, char flag)
225   {
226 <  int ts5 = !IsCapable(client_p, CAP_TS6);
227 <  dlink_node *lp;
228 <  struct Ban *banptr;
229 <  char pbuf[IRCD_BUFSIZE];
230 <  int tlen, mlen, cur_len, count = 0;
231 <  char *mp = NULL, *pp = pbuf;
226 >  const dlink_node *ptr = NULL;
227 >  char pbuf[IRCD_BUFSIZE] = "";
228 >  int tlen, mlen, cur_len;
229 >  char *pp = pbuf;
230  
231 <  if (top == NULL || top->length == 0)
231 >  if (list->length == 0)
232      return;
233  
234 <  if (ts5)
235 <    mlen = ircsprintf(buf, ":%s MODE %s +", me.name, chptr->chname);
236 <  else
239 <    mlen = ircsprintf(buf, ":%s BMASK %lu %s %c :", me.id,
240 <                      (unsigned long)chptr->channelts, chptr->chname, flag);
241 <
242 <  /* MODE needs additional one byte for space between buf and pbuf */
243 <  cur_len = mlen + ts5;
244 <  mp = buf + mlen;
234 >  mlen = snprintf(buf, sizeof(buf), ":%s BMASK %lu %s %c :", me.id,
235 >                  (unsigned long)chptr->channelts, chptr->chname, flag);
236 >  cur_len = mlen;
237  
238 <  DLINK_FOREACH(lp, top->head)
238 >  DLINK_FOREACH(ptr, list->head)
239    {
240 <    banptr = lp->data;
240 >    const struct Ban *banptr = ptr->data;
241  
242 <    /* must add another b/e/I letter if we use MODE */
251 <    tlen = banptr->len + 3 + ts5;
242 >    tlen = banptr->len + 3;  /* +3 for ! + @ + space */
243  
244      /*
245 <     * send buffer and start over if we cannot fit another ban,
255 <     * or if the target is non-ts6 and we have too many modes in
256 <     * in this line.
245 >     * Send buffer and start over if we cannot fit another ban
246       */
247 <    if (cur_len + (tlen - 1) > IRCD_BUFSIZE - 2 ||
259 <        (!IsCapable(client_p, CAP_TS6) &&
260 <         (count >= MAXMODEPARAMS || pp - pbuf >= MODEBUFLEN)))
247 >    if (cur_len + (tlen - 1) > IRCD_BUFSIZE - 2)
248      {
249 <      *(pp - 1) = '\0';  /* get rid of trailing space on buffer */
250 <      sendto_one(client_p, "%s%s%s", buf, ts5 ? " " : "", pbuf);
249 >      *(pp - 1) = '\0';  /* Get rid of trailing space on buffer */
250 >      sendto_one(client_p, "%s%s", buf, pbuf);
251  
252 <      cur_len = mlen + ts5;
266 <      mp = buf + mlen;
252 >      cur_len = mlen;
253        pp = pbuf;
268      count = 0;
269    }
270
271    count++;
272    if (ts5)
273    {
274      *mp++ = flag;
275      *mp = '\0';
254      }
255  
256 <    pp += ircsprintf(pp, "%s!%s@%s ", banptr->name, banptr->username,
257 <                     banptr->host);
256 >    pp += sprintf(pp, "%s!%s@%s ", banptr->name, banptr->user,
257 >                  banptr->host);
258      cur_len += tlen;
259    }
260  
261 <  *(pp - 1) = '\0';  /* get rid of trailing space on buffer */
262 <  sendto_one(client_p, "%s%s%s", buf, ts5 ? " " : "", pbuf);
261 >  *(pp - 1) = '\0';  /* Get rid of trailing space on buffer */
262 >  sendto_one(client_p, "%s%s", buf, pbuf);
263   }
264  
265 < /*! \brief send "client_p" a full list of the modes for channel chptr
266 < * \param client_p pointer to client client_p
267 < * \param chptr    pointer to channel pointer
265 > /*! \brief Send "client_p" a full list of the modes for channel chptr
266 > * \param client_p Pointer to client client_p
267 > * \param chptr    Pointer to channel pointer
268   */
269   void
270   send_channel_modes(struct Client *client_p, struct Channel *chptr)
271   {
272 <  if (chptr->chname[0] != '#')
273 <    return;
272 >  char modebuf[MODEBUFLEN] = "";
273 >  char parabuf[MODEBUFLEN] = "";
274  
297  *modebuf = *parabuf = '\0';
275    channel_modes(chptr, client_p, modebuf, parabuf);
276    send_members(client_p, chptr, modebuf, parabuf);
277  
278    send_mode_list(client_p, chptr, &chptr->banlist, 'b');
279 <
280 <  if (IsCapable(client_p, CAP_EX))
304 <    send_mode_list(client_p, chptr, &chptr->exceptlist, 'e');
305 <  if (IsCapable(client_p, CAP_IE))
306 <    send_mode_list(client_p, chptr, &chptr->invexlist, 'I');
279 >  send_mode_list(client_p, chptr, &chptr->exceptlist, 'e');
280 >  send_mode_list(client_p, chptr, &chptr->invexlist, 'I');
281   }
282  
283 < /*! \brief check channel name for invalid characters
284 < * \param name pointer to channel name string
285 < * \param local indicates whether it's a local or remote creation
283 > /*! \brief Check channel name for invalid characters
284 > * \param name Pointer to channel name string
285 > * \param local Indicates whether it's a local or remote creation
286   * \return 0 if invalid, 1 otherwise
287   */
288   int
289 < check_channel_name(const char *name, int local)
289 > check_channel_name(const char *name, const int local)
290   {
291    const char *p = name;
292 <  int max_length = local ? LOCAL_CHANNELLEN : CHANNELLEN;
292 >
293    assert(name != NULL);
294  
295    if (!IsChanPrefix(*p))
296      return 0;
297  
298 <  if (!local)
298 >  if (!local || !ConfigChannel.disable_fake_channels)
299    {
300      while (*++p)
301        if (!IsChanChar(*p))
# Line 330 | Line 304 | check_channel_name(const char *name, int
304    else
305    {
306      while (*++p)
307 <      if (!IsChanChar(*p) ||
334 <          (IsFchanChar(*p) && ConfigChannel.disable_fake_channels))
307 >      if (!IsVisibleChanChar(*p))
308          return 0;
309    }
310  
311 <  return p - name <= max_length;
311 >  return p - name <= CHANNELLEN;
312   }
313  
314   void
# Line 344 | Line 317 | remove_ban(struct Ban *bptr, dlink_list
317    dlinkDelete(&bptr->node, list);
318  
319    MyFree(bptr->name);
320 <  MyFree(bptr->username);
320 >  MyFree(bptr->user);
321    MyFree(bptr->host);
322    MyFree(bptr->who);
323  
324 <  BlockHeapFree(ban_heap, bptr);
324 >  mp_pool_release(bptr);
325   }
326  
327   /* free_channel_list()
# Line 360 | Line 333 | remove_ban(struct Ban *bptr, dlink_list
333   void
334   free_channel_list(dlink_list *list)
335   {
336 <  dlink_node *ptr = NULL, *next_ptr = NULL;
336 >  dlink_node *ptr = NULL, *ptr_next = NULL;
337  
338 <  DLINK_FOREACH_SAFE(ptr, next_ptr, list->head)
338 >  DLINK_FOREACH_SAFE(ptr, ptr_next, list->head)
339      remove_ban(ptr->data, list);
340  
341    assert(list->tail == NULL && list->head == NULL);
# Line 370 | Line 343 | free_channel_list(dlink_list *list)
343  
344   /*! \brief Get Channel block for chname (and allocate a new channel
345   *         block, if it didn't exist before)
346 < * \param chname channel name
347 < * \return channel block
346 > * \param chname Channel name
347 > * \return Channel block
348   */
349   struct Channel *
350   make_channel(const char *chname)
# Line 380 | Line 353 | make_channel(const char *chname)
353  
354    assert(!EmptyString(chname));
355  
356 <  chptr = BlockHeapAlloc(channel_heap);
356 >  chptr = mp_pool_get(channel_pool);
357  
358 <  /* doesn't hurt to set it here */
358 >  /* Doesn't hurt to set it here */
359    chptr->channelts = CurrentTime;
360    chptr->last_join_time = CurrentTime;
361  
362    strlcpy(chptr->chname, chname, sizeof(chptr->chname));
363 <  dlinkAdd(chptr, &chptr->node, &global_channel_list);
363 >  dlinkAdd(chptr, &chptr->node, &channel_list);
364  
365    hash_add_channel(chptr);
366  
367    return chptr;
368   }
369  
370 < /*! \brief walk through this channel, and destroy it.
371 < * \param chptr channel pointer
370 > /*! \brief Walk through this channel, and destroy it.
371 > * \param chptr Channel pointer
372   */
373   void
374   destroy_channel(struct Channel *chptr)
# Line 405 | Line 378 | destroy_channel(struct Channel *chptr)
378    DLINK_FOREACH_SAFE(ptr, ptr_next, chptr->invites.head)
379      del_invite(chptr, ptr->data);
380  
381 <  /* free ban/exception/invex lists */
381 >  /* Free ban/exception/invex lists */
382    free_channel_list(&chptr->banlist);
383    free_channel_list(&chptr->exceptlist);
384    free_channel_list(&chptr->invexlist);
385  
386 <  /* Free the topic */
414 <  free_topic(chptr);
415 <
416 <  dlinkDelete(&chptr->node, &global_channel_list);
386 >  dlinkDelete(&chptr->node, &channel_list);
387    hash_del_channel(chptr);
388  
389 <  if (ServerInfo.hub)
420 <    if ((ptr = dlinkFindDelete(&lazylink_channels, chptr)))
421 <      free_dlink_node(ptr);
422 <
423 <  BlockHeapFree(channel_heap, chptr);
389 >  mp_pool_release(chptr);
390   }
391  
392   /*!
393 < * \param chptr pointer to channel
394 < * \return string pointer "=" if public, "@" if secret else "*"
393 > * \param chptr Pointer to channel
394 > * \return String pointer "=" if public, "@" if secret else "*"
395   */
396   static const char *
397 < channel_pub_or_secret(struct Channel *chptr)
397 > channel_pub_or_secret(const struct Channel *chptr)
398   {
399    if (SecretChannel(chptr))
400      return "@";
# Line 438 | Line 404 | channel_pub_or_secret(struct Channel *ch
404   }
405  
406   /*! \brief lists all names on given channel
407 < * \param source_p pointer to client struct requesting names
408 < * \param chptr    pointer to channel block
409 < * \param show_eon show ENDOFNAMES numeric or not
407 > * \param source_p Pointer to client struct requesting names
408 > * \param chptr    Pointer to channel block
409 > * \param show_eon Show RPL_ENDOFNAMES numeric or not
410   *                 (don't want it with /names with no params)
411   */
412   void
413   channel_member_names(struct Client *source_p, struct Channel *chptr,
414                       int show_eon)
415   {
416 <  struct Client *target_p = NULL;
417 <  struct Membership *ms = NULL;
452 <  dlink_node *ptr = NULL;
453 <  char lbuf[IRCD_BUFSIZE + 1];
416 >  const dlink_node *ptr = NULL;
417 >  char lbuf[IRCD_BUFSIZE + 1] = "";
418    char *t = NULL, *start = NULL;
419    int tlen = 0;
420    int is_member = IsMember(source_p, chptr);
421 <  int multi_prefix = (source_p->localClient->cap_active & CAP_MULTI_PREFIX) != 0;
421 >  int multi_prefix = HasCap(source_p, CAP_MULTI_PREFIX) != 0;
422 >  int uhnames = HasCap(source_p, CAP_UHNAMES) != 0;
423  
424    if (PubChannel(chptr) || is_member)
425    {
426 <    t = lbuf + ircsprintf(lbuf, form_str(RPL_NAMREPLY),
427 <                          me.name, source_p->name,
428 <                          channel_pub_or_secret(chptr),
464 <                          chptr->chname);
426 >    t = lbuf + snprintf(lbuf, sizeof(lbuf), numeric_form(RPL_NAMREPLY),
427 >                        me.name, source_p->name,
428 >                        channel_pub_or_secret(chptr), chptr->chname);
429      start = t;
430  
431      DLINK_FOREACH(ptr, chptr->members.head)
432      {
433 <      ms       = ptr->data;
470 <      target_p = ms->client_p;
433 >      const struct Membership *ms = ptr->data;
434  
435 <      if (IsInvisible(target_p) && !is_member)
435 >      if (HasUMode(ms->client_p, UMODE_INVISIBLE) && !is_member)
436          continue;
437  
438 <      tlen = strlen(target_p->name) + 1;  /* nick + space */
438 >      if (!uhnames)
439 >        tlen = strlen(ms->client_p->name) + 1;  /* +1 for space */
440 >      else
441 >        tlen = strlen(ms->client_p->name) + strlen(ms->client_p->username) +
442 >               strlen(ms->client_p->host) + 3;  /* +3 for ! + @ + space */
443  
444        if (!multi_prefix)
445        {
# Line 489 | Line 456 | channel_member_names(struct Client *sour
456            ++tlen;
457        }
458  
459 <      if (t + tlen - lbuf > IRCD_BUFSIZE)
459 >      if (t + tlen - lbuf > IRCD_BUFSIZE - 2)
460        {
461          *(t - 1) = '\0';
462          sendto_one(source_p, "%s", lbuf);
463          t = start;
464        }
465  
466 <      t += ircsprintf(t, "%s%s ", get_member_status(ms, multi_prefix),
467 <                      target_p->name);
466 >      if (!uhnames)
467 >        t += sprintf(t, "%s%s ", get_member_status(ms, multi_prefix),
468 >                     ms->client_p->name);
469 >      else
470 >        t += sprintf(t, "%s%s!%s@%s ", get_member_status(ms, multi_prefix),
471 >                     ms->client_p->name, ms->client_p->username,
472 >                     ms->client_p->host);
473      }
474  
475 <    if (tlen != 0)
475 >    if (tlen)
476      {
477        *(t - 1) = '\0';
478        sendto_one(source_p, "%s", lbuf);
# Line 508 | Line 480 | channel_member_names(struct Client *sour
480    }
481  
482    if (show_eon)
483 <    sendto_one(source_p, form_str(RPL_ENDOFNAMES),
512 <               me.name, source_p->name, chptr->chname);
483 >    sendto_one_numeric(source_p, &me, RPL_ENDOFNAMES, chptr->chname);
484   }
485  
486 < /*! \brief adds client to invite list
487 < * \param chptr pointer to channel block
488 < * \param who   pointer to client to add invite to
486 > /*! \brief Adds client to invite list
487 > * \param chptr Pointer to channel block
488 > * \param who   Pointer to client to add invite to
489   */
490   void
491   add_invite(struct Channel *chptr, struct Client *who)
# Line 522 | Line 493 | add_invite(struct Channel *chptr, struct
493    del_invite(chptr, who);
494  
495    /*
496 <   * delete last link in chain if the list is max length
496 >   * Delete last link in chain if the list is max length
497     */
498    if (dlink_list_length(&who->localClient->invited) >=
499 <      ConfigChannel.max_chans_per_user)
499 >      ConfigChannel.max_channels)
500      del_invite(who->localClient->invited.tail->data, who);
501  
502 <  /* add client to channel invite list */
502 >  /* Add client to channel invite list */
503    dlinkAdd(who, make_dlink_node(), &chptr->invites);
504  
505 <  /* add channel to the end of the client invite list */
505 >  /* Add channel to the end of the client invite list */
506    dlinkAdd(chptr, make_dlink_node(), &who->localClient->invited);
507   }
508  
509   /*! \brief Delete Invite block from channel invite list
510   *         and client invite list
511 < * \param chptr pointer to Channel struct
512 < * \param who   pointer to client to remove invites from
511 > * \param chptr Pointer to Channel struct
512 > * \param who   Pointer to client to remove invites from
513   */
514   void
515   del_invite(struct Channel *chptr, struct Client *who)
# Line 564 | Line 535 | del_invite(struct Channel *chptr, struct
535   * (like in get_client_name)
536   */
537   const char *
538 < get_member_status(const struct Membership *ms, int combine)
538 > get_member_status(const struct Membership *ms, const int combine)
539   {
540 <  static char buffer[4];
541 <  char *p = NULL;
571 <
572 <  if (ms == NULL)
573 <    return "";
574 <  p = buffer;
540 >  static char buffer[4];  /* 4 for @%+\0 */
541 >  char *p = buffer;
542  
543    if (ms->flags & CHFL_CHANOP)
544    {
# Line 580 | Line 547 | get_member_status(const struct Membershi
547      *p++ = '@';
548    }
549  
583 #ifdef HALFOPS
550    if (ms->flags & CHFL_HALFOP)
551    {
552      if (!combine)
553        return "%";
554      *p++ = '%';
555    }
590 #endif
556  
557    if (ms->flags & CHFL_VOICE)
558      *p++ = '+';
# Line 597 | Line 562 | get_member_status(const struct Membershi
562   }
563  
564   /*!
565 < * \param who  pointer to Client to check
566 < * \param list pointer to ban list to search
565 > * \param who  Pointer to Client to check
566 > * \param list Pointer to ban list to search
567   * \return 1 if ban found for given n!u\@h mask, 0 otherwise
568   *
569   */
# Line 609 | Line 574 | find_bmask(const struct Client *who, con
574  
575    DLINK_FOREACH(ptr, list->head)
576    {
577 <    struct Ban *bp = ptr->data;
577 >    const struct Ban *bp = ptr->data;
578  
579 <    if (match(bp->name, who->name) && match(bp->username, who->username))
579 >    if (!match(bp->name, who->name) && !match(bp->user, who->username))
580      {
581        switch (bp->type)
582        {
583          case HM_HOST:
584 <          if (match(bp->host, who->host) || match(bp->host, who->sockhost))
584 >          if (!match(bp->host, who->host) || !match(bp->host, who->sockhost))
585              return 1;
586            break;
587          case HM_IPV4:
# Line 641 | Line 606 | find_bmask(const struct Client *who, con
606   }
607  
608   /*!
609 < * \param chptr pointer to channel block
610 < * \param who   pointer to client to check access fo
609 > * \param chptr Pointer to channel block
610 > * \param who   Pointer to client to check access fo
611   * \return 0 if not banned, 1 otherwise
612   */
613   int
614 < is_banned(struct Channel *chptr, struct Client *who)
614 > is_banned(const struct Channel *chptr, const struct Client *who)
615   {
616    if (find_bmask(who, &chptr->banlist))
617 <    if (!ConfigChannel.use_except || !find_bmask(who, &chptr->exceptlist))
617 >    if (!find_bmask(who, &chptr->exceptlist))
618        return 1;
619  
620    return 0;
621   }
622  
623 < /*!
624 < * \param source_p pointer to client attempting to join
625 < * \param chptr    pointer to channel
626 < * \param key      key sent by client attempting to join if present
623 > /*! Tests if a client can join a certain channel
624 > * \param source_p Pointer to client attempting to join
625 > * \param chptr    Pointer to channel
626 > * \param key      Key sent by client attempting to join if present
627   * \return ERR_BANNEDFROMCHAN, ERR_INVITEONLYCHAN, ERR_CHANNELISFULL
628   *         or 0 if allowed to join.
629   */
630   int
631   can_join(struct Client *source_p, struct Channel *chptr, const char *key)
632   {
633 <  if (is_banned(chptr, source_p))
634 <    return ERR_BANNEDFROMCHAN;
633 >  if ((chptr->mode.mode & MODE_SSLONLY) && !HasUMode(source_p, UMODE_SSL))
634 >    return ERR_SSLONLYCHAN;
635 >
636 >  if ((chptr->mode.mode & MODE_REGONLY) && !HasUMode(source_p, UMODE_REGISTERED))
637 >    return ERR_NEEDREGGEDNICK;
638 >
639 >  if ((chptr->mode.mode & MODE_OPERONLY) && !HasUMode(source_p, UMODE_OPER))
640 >    return ERR_OPERONLYCHAN;
641  
642    if (chptr->mode.mode & MODE_INVITEONLY)
643      if (!dlinkFind(&source_p->localClient->invited, chptr))
644 <      if (!ConfigChannel.use_invex || !find_bmask(source_p, &chptr->invexlist))
644 >      if (!find_bmask(source_p, &chptr->invexlist))
645          return ERR_INVITEONLYCHAN;
646  
647 <  if (chptr->mode.key[0] && (!key || irccmp(chptr->mode.key, key)))
647 >  if (chptr->mode.key[0] && (!key || strcmp(chptr->mode.key, key)))
648      return ERR_BADCHANNELKEY;
649  
650    if (chptr->mode.limit && dlink_list_length(&chptr->members) >=
651        chptr->mode.limit)
652      return ERR_CHANNELISFULL;
653  
654 +  if (is_banned(chptr, source_p))
655 +    return ERR_BANNEDFROMCHAN;
656 +
657    return 0;
658   }
659  
660   int
661 < has_member_flags(struct Membership *ms, unsigned int flags)
661 > has_member_flags(const struct Membership *ms, const unsigned int flags)
662   {
663 <  if (ms != NULL)
690 <    return ms->flags & flags;
691 <  return 0;
663 >  return ms && (ms->flags & flags);
664   }
665  
666   struct Membership *
# Line 699 | Line 671 | find_channel_link(struct Client *client_
671    if (!IsClient(client_p))
672      return NULL;
673  
674 <  DLINK_FOREACH(ptr, client_p->channel.head)
675 <    if (((struct Membership *)ptr->data)->chptr == chptr)
676 <      return (struct Membership *)ptr->data;
674 >  if (dlink_list_length(&chptr->members) < dlink_list_length(&client_p->channel))
675 >  {
676 >    DLINK_FOREACH(ptr, chptr->members.head)
677 >      if (((struct Membership *)ptr->data)->client_p == client_p)
678 >        return ptr->data;
679 >  }
680 >  else
681 >  {
682 >    DLINK_FOREACH(ptr, client_p->channel.head)
683 >      if (((struct Membership *)ptr->data)->chptr == chptr)
684 >        return ptr->data;
685 >  }
686  
687    return NULL;
688   }
689  
690 < /*!
691 < * \param chptr    pointer to Channel struct
692 < * \param source_p pointer to Client struct
693 < * \param ms       pointer to Membership struct (can be NULL)
690 > /*! Tests if a client can send to a channel
691 > * \param message The actual message string the client wants to send
692 > * \return 1 if the message does contain any control codes, 0 otherwise
693 > */
694 > static int
695 > msg_has_ctrls(const char *message)
696 > {
697 >  const unsigned char *p = (const unsigned char *)message;
698 >
699 >  for (; *p; ++p)
700 >  {
701 >    if (*p > 31 || *p == 1)
702 >      continue;  /* No control code or CTCP */
703 >
704 >    if (*p == 27)  /* Escape */
705 >    {
706 >      /* ISO 2022 charset shift sequence */
707 >      if (*(p + 1) == '$' ||
708 >          *(p + 1) == '(')
709 >      {
710 >        ++p;
711 >        continue;
712 >      }
713 >    }
714 >
715 >    return 1;  /* Control code */
716 >  }
717 >
718 >  return 0;
719 > }
720 >
721 > /*! Tests if a client can send to a channel
722 > * \param chptr    Pointer to Channel struct
723 > * \param source_p Pointer to Client struct
724 > * \param ms       Pointer to Membership struct (can be NULL)
725 > * \param message  The actual message string the client wants to send
726   * \return CAN_SEND_OPV if op or voiced on channel\n
727   *         CAN_SEND_NONOP if can send to channel but is not an op\n
728 < *         CAN_SEND_NO if they cannot send to channel\n
728 > *         ERR_CANNOTSENDTOCHAN or ERR_NEEDREGGEDNICK if they cannot send to channel\n
729   */
730   int
731 < can_send(struct Channel *chptr, struct Client *source_p, struct Membership *ms)
731 > can_send(struct Channel *chptr, struct Client *source_p,
732 >         struct Membership *ms, const char *message)
733   {
734 <  if (IsServer(source_p))
734 >  struct MaskItem *conf = NULL;
735 >
736 >  if (IsServer(source_p) || HasFlag(source_p, FLAGS_SERVICE))
737      return CAN_SEND_OPV;
738  
739    if (MyClient(source_p) && !IsExemptResv(source_p))
740 <    if (!(IsOper(source_p) && ConfigFileEntry.oper_pass_resv))
741 <      if (!hash_find_resv(chptr->chname) == ConfigChannel.restrict_channels)
742 <        return CAN_SEND_NO;
743 <
744 <  if (ms != NULL || (ms = find_channel_link(source_p, chptr)))
745 <  {
740 >    if (!(HasUMode(source_p, UMODE_OPER) && ConfigFileEntry.oper_pass_resv))
741 >      if ((conf = match_find_resv(chptr->chname)) && !resv_find_exempt(source_p, conf))
742 >        return ERR_CANNOTSENDTOCHAN;
743 >
744 >  if ((chptr->mode.mode & MODE_NOCTRL) && msg_has_ctrls(message))
745 >    return ERR_NOCTRLSONCHAN;
746 >  if (ms || (ms = find_channel_link(source_p, chptr)))
747      if (ms->flags & (CHFL_CHANOP|CHFL_HALFOP|CHFL_VOICE))
748        return CAN_SEND_OPV;
749 +  if (!ms && (chptr->mode.mode & MODE_NOPRIVMSGS))
750 +    return ERR_CANNOTSENDTOCHAN;
751 +  if (chptr->mode.mode & MODE_MODERATED)
752 +    return ERR_CANNOTSENDTOCHAN;
753 +  if ((chptr->mode.mode & MODE_MODREG) && !HasUMode(source_p, UMODE_REGISTERED))
754 +    return ERR_NEEDREGGEDNICK;
755  
756 <    /* cache can send if quiet_on_ban and banned */
757 <    if (ConfigChannel.quiet_on_ban && MyClient(source_p))
756 >  /* Cache can send if banned */
757 >  if (MyClient(source_p))
758 >  {
759 >    if (ms)
760      {
761        if (ms->flags & CHFL_BAN_SILENCED)
762 <        return CAN_SEND_NO;
762 >        return ERR_CANNOTSENDTOCHAN;
763  
764        if (!(ms->flags & CHFL_BAN_CHECKED))
765        {
766          if (is_banned(chptr, source_p))
767          {
768            ms->flags |= (CHFL_BAN_CHECKED|CHFL_BAN_SILENCED);
769 <          return CAN_SEND_NO;
769 >          return ERR_CANNOTSENDTOCHAN;
770          }
771  
772          ms->flags |= CHFL_BAN_CHECKED;
773        }
774      }
775 +    else if (is_banned(chptr, source_p))
776 +      return ERR_CANNOTSENDTOCHAN;
777    }
751  else if (chptr->mode.mode & MODE_NOPRIVMSGS)
752    return CAN_SEND_NO;
753
754  if (chptr->mode.mode & MODE_MODERATED)
755    return CAN_SEND_NO;
778  
779    return CAN_SEND_NONOP;
780   }
# Line 760 | Line 782 | can_send(struct Channel *chptr, struct C
782   /*! \brief Updates the client's oper_warn_count_down, warns the
783   *         IRC operators if necessary, and updates
784   *         join_leave_countdown as needed.
785 < * \param source_p pointer to struct Client to check
786 < * \param name     channel name or NULL if this is a part.
785 > * \param source_p Pointer to struct Client to check
786 > * \param name     Channel name or NULL if this is a part.
787   */
788   void
789   check_spambot_warning(struct Client *source_p, const char *name)
# Line 780 | Line 802 | check_spambot_warning(struct Client *sou
802  
803      if (source_p->localClient->oper_warn_count_down == 0)
804      {
805 <      /* Its already known as a possible spambot */
806 <      if (name != NULL)
807 <        sendto_realops_flags(UMODE_BOTS, L_ALL,
805 >      /* It's already known as a possible spambot */
806 >      if (name)
807 >        sendto_realops_flags(UMODE_BOTS, L_ALL, SEND_NOTICE,
808                               "User %s (%s@%s) trying to join %s is a possible spambot",
809                               source_p->name, source_p->username,
810                               source_p->host, name);
811        else
812 <        sendto_realops_flags(UMODE_BOTS, L_ALL,
812 >        sendto_realops_flags(UMODE_BOTS, L_ALL, SEND_NOTICE,
813                               "User %s (%s@%s) is a possible spambot",
814                               source_p->name, source_p->username,
815                               source_p->host);
# Line 809 | Line 831 | check_spambot_warning(struct Client *sou
831      {
832        if ((CurrentTime - (source_p->localClient->last_join_time)) <
833            GlobalSetOptions.spam_time)
834 <      {
813 <        /* oh, its a possible spambot */
814 <        source_p->localClient->join_leave_count++;
815 <      }
834 >        source_p->localClient->join_leave_count++;  /* It's a possible spambot */
835      }
836  
837 <    if (name != NULL)
837 >    if (name)
838        source_p->localClient->last_join_time = CurrentTime;
839      else
840        source_p->localClient->last_leave_time = CurrentTime;
841    }
842   }
843  
844 < /*! \brief compares usercount and servercount against their split
844 > /*! \brief Compares usercount and servercount against their split
845   *         values and adjusts splitmode accordingly
846   * \param unused Unused address pointer
847   */
# Line 838 | Line 857 | check_splitmode(void *unused)
857      {
858        splitmode = 1;
859  
860 <      sendto_realops_flags(UMODE_ALL,L_ALL,
860 >      sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
861                             "Network split, activating splitmode");
862 <      eventAddIsh("check_splitmode", check_splitmode, NULL, 10);
862 >      event_add(&splitmode_event, NULL);
863      }
864 <    else if (splitmode && (server > split_servers) && (Count.total > split_users))
864 >    else if (splitmode && (server >= split_servers) && (Count.total >= split_users))
865      {
866        splitmode = 0;
867  
868 <      sendto_realops_flags(UMODE_ALL, L_ALL,
868 >      sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
869                             "Network rejoined, deactivating splitmode");
870 <      eventDelete(check_splitmode, NULL);
870 >      event_delete(&splitmode_event);
871      }
872    }
873   }
874  
875 < /*! \brief Allocates a new topic
876 < * \param chptr Channel to allocate a new topic for
875 > /*! \brief Sets the channel topic for a certain channel
876 > * \param chptr      Pointer to struct Channel
877 > * \param topic      The topic string
878 > * \param topic_info n!u\@h formatted string of the topic setter
879 > * \param topicts    Timestamp on the topic
880 > * \param local      Whether the topic is set by a local client
881   */
882 < static void
883 < allocate_topic(struct Channel *chptr)
882 > void
883 > channel_set_topic(struct Channel *chptr, const char *topic,
884 >                  const char *topic_info, time_t topicts, int local)
885   {
886 <  void *ptr = NULL;
886 >  if (local)
887 >    strlcpy(chptr->topic, topic, IRCD_MIN(sizeof(chptr->topic), ServerInfo.max_topic_length + 1));
888 >  else
889 >    strlcpy(chptr->topic, topic, sizeof(chptr->topic));
890  
891 <  if (chptr == NULL)
892 <    return;
891 >  strlcpy(chptr->topic_info, topic_info, sizeof(chptr->topic_info));
892 >  chptr->topic_time = topicts;
893 > }
894 >
895 > /* do_join_0()
896 > *
897 > * inputs       - pointer to client doing join 0
898 > * output       - NONE
899 > * side effects - Use has decided to join 0. This is legacy
900 > *                from the days when channels were numbers not names. *sigh*
901 > *                There is a bunch of evilness necessary here due to
902 > *                anti spambot code.
903 > */
904 > void
905 > channel_do_join_0(struct Client *source_p)
906 > {
907 >  dlink_node *ptr = NULL, *ptr_next = NULL;
908  
909 <  ptr = BlockHeapAlloc(topic_heap);  
909 >  if (source_p->channel.head)
910 >    if (MyConnect(source_p) && !HasUMode(source_p, UMODE_OPER))
911 >      check_spambot_warning(source_p, NULL);
912  
913 <  /* Basically we allocate one large block for the topic and
914 <   * the topic info.  We then split it up into two and shove it
915 <   * in the chptr
916 <   */
917 <  chptr->topic       = ptr;
918 <  chptr->topic_info  = (char *)ptr + TOPICLEN+1;
919 <  *chptr->topic      = '\0';
920 <  *chptr->topic_info = '\0';
913 >  DLINK_FOREACH_SAFE(ptr, ptr_next, source_p->channel.head)
914 >  {
915 >    struct Channel *chptr = ((struct Membership *)ptr->data)->chptr;
916 >
917 >    sendto_server(source_p, NOCAPS, NOCAPS, ":%s PART %s",
918 >                  source_p->id, chptr->chname);
919 >    sendto_channel_local(ALL_MEMBERS, 0, chptr, ":%s!%s@%s PART %s",
920 >                         source_p->name, source_p->username,
921 >                         source_p->host, chptr->chname);
922 >
923 >    remove_user_from_channel(ptr->data);
924 >  }
925 > }
926 >
927 > static char *
928 > channel_find_last0(struct Client *source_p, char *chanlist)
929 > {
930 >  int join0 = 0;
931 >
932 >  for (char *p = chanlist; *p; ++p)  /* Find last "JOIN 0" */
933 >  {
934 >    if (*p == '0' && (*(p + 1) == ',' || *(p + 1) == '\0'))
935 >    {
936 >      if ((*p + 1) == ',')
937 >        ++p;
938 >
939 >      chanlist = p + 1;
940 >      join0 = 1;
941 >    }
942 >    else
943 >    {
944 >      while (*p != ',' && *p != '\0')  /* Skip past channel name */
945 >        ++p;
946 >
947 >      if (*p == '\0')  /* Hit the end */
948 >        break;
949 >    }
950 >  }
951 >
952 >  if (join0)
953 >    channel_do_join_0(source_p);
954 >
955 >  return chanlist;
956   }
957  
958   void
959 < free_topic(struct Channel *chptr)
959 > channel_do_join(struct Client *source_p, char *channel, char *key_list)
960   {
961 <  void *ptr = NULL;
962 <  assert(chptr);
963 <  if (chptr->topic == NULL)
964 <    return;
961 >  char *p = NULL;
962 >  char *chan = NULL;
963 >  char *chan_list = NULL;
964 >  struct Channel *chptr = NULL;
965 >  struct MaskItem *conf = NULL;
966 >  const struct ClassItem *class = get_class_ptr(&source_p->localClient->confs);
967 >  int i = 0;
968 >  unsigned int flags = 0;
969  
970 <  /*
971 <   * If you change allocate_topic you MUST change this as well
972 <   */
973 <  ptr = chptr->topic;
974 <  BlockHeapFree(topic_heap, ptr);    
975 <  chptr->topic      = NULL;
976 <  chptr->topic_info = NULL;
970 >  chan_list = channel_find_last0(source_p, channel);
971 >
972 >  for (chan = strtoken(&p, chan_list, ","); chan;
973 >       chan = strtoken(&p,      NULL, ","))
974 >  {
975 >    const char *key = NULL;
976 >
977 >    /* If we have any more keys, take the first for this channel. */
978 >    if (!EmptyString(key_list) && (key_list = strchr(key = key_list, ',')))
979 >      *key_list++ = '\0';
980 >
981 >    /* Empty keys are the same as no keys. */
982 >    if (key && *key == '\0')
983 >      key = NULL;
984 >
985 >    if (!check_channel_name(chan, 1))
986 >    {
987 >      sendto_one_numeric(source_p, &me, ERR_BADCHANNAME, chan);
988 >      continue;
989 >    }
990 >
991 >    if (!IsExemptResv(source_p) &&
992 >        !(HasUMode(source_p, UMODE_OPER) && ConfigFileEntry.oper_pass_resv) &&
993 >        ((conf = match_find_resv(chan)) && !resv_find_exempt(source_p, conf)))
994 >    {
995 >      ++conf->count;
996 >      sendto_one_numeric(source_p, &me, ERR_CHANBANREASON,
997 >                         chan, conf->reason ? conf->reason : "Reserved channel");
998 >      sendto_realops_flags(UMODE_REJ, L_ALL, SEND_NOTICE,
999 >                           "Forbidding reserved channel %s from user %s",
1000 >                           chan, get_client_name(source_p, HIDE_IP));
1001 >      continue;
1002 >    }
1003 >
1004 >    if (dlink_list_length(&source_p->channel) >=
1005 >        ((class->max_channels) ? class->max_channels : ConfigChannel.max_channels))
1006 >    {
1007 >      sendto_one_numeric(source_p, &me, ERR_TOOMANYCHANNELS, chan);
1008 >      break;
1009 >    }
1010 >
1011 >    if ((chptr = hash_find_channel(chan)))
1012 >    {
1013 >      if (IsMember(source_p, chptr))
1014 >        continue;
1015 >
1016 >      if (splitmode && !HasUMode(source_p, UMODE_OPER) &&
1017 >          ConfigChannel.no_join_on_split)
1018 >      {
1019 >        sendto_one_numeric(source_p, &me, ERR_UNAVAILRESOURCE, chptr->chname);
1020 >        continue;
1021 >      }
1022 >
1023 >      /*
1024 >       * can_join checks for +i key, bans.
1025 >       */
1026 >      if ((i = can_join(source_p, chptr, key)))
1027 >      {
1028 >        sendto_one_numeric(source_p, &me, i, chptr->chname);
1029 >        continue;
1030 >      }
1031 >
1032 >      /*
1033 >       * This should never be the case unless there is some sort of
1034 >       * persistant channels.
1035 >       */
1036 >      if (dlink_list_length(&chptr->members) == 0)
1037 >        flags = CHFL_CHANOP;
1038 >      else
1039 >        flags = 0;
1040 >    }
1041 >    else
1042 >    {
1043 >      if (splitmode && !HasUMode(source_p, UMODE_OPER) &&
1044 >          (ConfigChannel.no_create_on_split || ConfigChannel.no_join_on_split))
1045 >      {
1046 >        sendto_one_numeric(source_p, &me, ERR_UNAVAILRESOURCE, chan);
1047 >        continue;
1048 >      }
1049 >
1050 >      flags = CHFL_CHANOP;
1051 >      chptr = make_channel(chan);
1052 >    }
1053 >
1054 >    if (!HasUMode(source_p, UMODE_OPER))
1055 >      check_spambot_warning(source_p, chptr->chname);
1056 >
1057 >    add_user_to_channel(chptr, source_p, flags, 1);
1058 >
1059 >    /*
1060 >     *  Set timestamp if appropriate, and propagate
1061 >     */
1062 >    if (flags == CHFL_CHANOP)
1063 >    {
1064 >      chptr->channelts = CurrentTime;
1065 >      chptr->mode.mode |= MODE_TOPICLIMIT;
1066 >      chptr->mode.mode |= MODE_NOPRIVMSGS;
1067 >
1068 >      sendto_server(source_p, NOCAPS, NOCAPS, ":%s SJOIN %lu %s +nt :@%s",
1069 >                    me.id, (unsigned long)chptr->channelts,
1070 >                    chptr->chname, source_p->id);
1071 >
1072 >      /*
1073 >       * Notify all other users on the new channel
1074 >       */
1075 >      sendto_channel_local(ALL_MEMBERS, 0, chptr, ":%s!%s@%s JOIN :%s",
1076 >                           source_p->name, source_p->username,
1077 >                           source_p->host, chptr->chname);
1078 >      sendto_channel_local(ALL_MEMBERS, 0, chptr, ":%s MODE %s +nt",
1079 >                           me.name, chptr->chname);
1080 >
1081 >      if (source_p->away[0])
1082 >        sendto_channel_local_butone(source_p, 0, CAP_AWAY_NOTIFY, chptr,
1083 >                                    ":%s!%s@%s AWAY :%s",
1084 >                                    source_p->name, source_p->username,
1085 >                                    source_p->host, source_p->away);
1086 >    }
1087 >    else
1088 >    {
1089 >      sendto_server(source_p, NOCAPS, NOCAPS, ":%s JOIN %lu %s +",
1090 >                    source_p->id, (unsigned long)chptr->channelts,
1091 >                    chptr->chname);
1092 >      sendto_channel_local(ALL_MEMBERS, 0, chptr, ":%s!%s@%s JOIN :%s",
1093 >                           source_p->name, source_p->username,
1094 >                           source_p->host, chptr->chname);
1095 >
1096 >      if (source_p->away[0])
1097 >        sendto_channel_local_butone(source_p, 0, CAP_AWAY_NOTIFY, chptr,
1098 >                                    ":%s!%s@%s AWAY :%s",
1099 >                                    source_p->name, source_p->username,
1100 >                                    source_p->host, source_p->away);
1101 >    }
1102 >
1103 >    del_invite(chptr, source_p);
1104 >
1105 >    if (chptr->topic[0])
1106 >    {
1107 >      sendto_one_numeric(source_p, &me, RPL_TOPIC, chptr->chname, chptr->topic);
1108 >      sendto_one_numeric(source_p, &me, RPL_TOPICWHOTIME, chptr->chname,
1109 >                         chptr->topic_info, chptr->topic_time);
1110 >    }
1111 >
1112 >    channel_member_names(source_p, chptr, 1);
1113 >
1114 >    source_p->localClient->last_join_time = CurrentTime;
1115 >  }
1116   }
1117  
1118 < /*! \brief Sets the channel topic for chptr
1119 < * \param chptr      Pointer to struct Channel
1120 < * \param topic      The topic string
1121 < * \param topic_info n!u\@h formatted string of the topic setter
900 < * \param topicts    timestamp on the topic
1118 > /*! \brief Removes a client from a specific channel
1119 > * \param source_p Pointer to source client to remove
1120 > * \param name     Name of channel to remove from
1121 > * \param reason   Part reason to show
1122   */
1123 < void
1124 < set_channel_topic(struct Channel *chptr, const char *topic,
904 <                  const char *topic_info, time_t topicts)
1123 > static void
1124 > channel_part_one_client(struct Client *source_p, const char *name, const char *reason)
1125   {
1126 <  if (!EmptyString(topic))
1126 >  struct Channel *chptr = NULL;
1127 >  struct Membership *ms = NULL;
1128 >
1129 >  if ((chptr = hash_find_channel(name)) == NULL)
1130 >  {
1131 >    sendto_one_numeric(source_p, &me, ERR_NOSUCHCHANNEL, name);
1132 >    return;
1133 >  }
1134 >
1135 >  if ((ms = find_channel_link(source_p, chptr)) == NULL)
1136    {
1137 <    if (chptr->topic == NULL)
1138 <      allocate_topic(chptr);
1137 >    sendto_one_numeric(source_p, &me, ERR_NOTONCHANNEL, chptr->chname);
1138 >    return;
1139 >  }
1140 >
1141 >  if (MyConnect(source_p) && !HasUMode(source_p, UMODE_OPER))
1142 >    check_spambot_warning(source_p, NULL);
1143  
1144 <    strlcpy(chptr->topic, topic, TOPICLEN+1);
1145 <    strlcpy(chptr->topic_info, topic_info, USERHOST_REPLYLEN);
1146 <    chptr->topic_time = topicts;
1144 >  /*
1145 >   * Remove user from the old channel (if any)
1146 >   * only allow /part reasons in -m chans
1147 >   */
1148 >  if (*reason && (!MyConnect(source_p) ||
1149 >      ((can_send(chptr, source_p, ms, reason) &&
1150 >       (source_p->localClient->firsttime + ConfigFileEntry.anti_spam_exit_message_time)
1151 >        < CurrentTime))))
1152 >  {
1153 >    sendto_server(source_p, NOCAPS, NOCAPS, ":%s PART %s :%s",
1154 >                  source_p->id, chptr->chname, reason);
1155 >    sendto_channel_local(ALL_MEMBERS, 0, chptr, ":%s!%s@%s PART %s :%s",
1156 >                         source_p->name, source_p->username,
1157 >                         source_p->host, chptr->chname, reason);
1158    }
1159    else
1160    {
1161 <    /*
1162 <     * Do not reset chptr->topic_time here, it's required for
1163 <     * bursting topics properly.
1164 <     */
1165 <    if (chptr->topic != NULL)
922 <      free_topic(chptr);
1161 >    sendto_server(source_p, NOCAPS, NOCAPS, ":%s PART %s",
1162 >                  source_p->id, chptr->chname);
1163 >    sendto_channel_local(ALL_MEMBERS, 0, chptr, ":%s!%s@%s PART %s",
1164 >                         source_p->name, source_p->username,
1165 >                         source_p->host, chptr->chname);
1166    }
1167 +
1168 +  remove_user_from_channel(ms);
1169 + }
1170 +
1171 + void
1172 + channel_do_part(struct Client *source_p, char *channel, char *reason)
1173 + {
1174 +  char *p = NULL, *name = NULL;
1175 +  char reasonbuf[KICKLEN + 1] = "";
1176 +
1177 +  if (!EmptyString(reason))
1178 +    strlcpy(reasonbuf, reason, sizeof(reasonbuf));
1179 +
1180 +  for (name = strtoken(&p, channel, ","); name;
1181 +       name = strtoken(&p,    NULL, ","))
1182 +    channel_part_one_client(source_p, name, reasonbuf);
1183   }

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