ircd-hybrid/modules/m_who.c

/*
 *  ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
 *  m_who.c: Shows who is on 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 "common.h"   
#include "handlers.h"
#include "client.h"
#include "channel.h"
#include "channel_mode.h"
#include "hash.h"
#include "ircd.h"
#include "numeric.h"
#include "s_serv.h"
#include "send.h"
#include "s_conf.h"
#include "msg.h"
#include "parse.h"
#include "modules.h"

static time_t last_used = 0;

static void m_who(struct Client *, struct Client *, int, char **);
static void ms_who(struct Client *, struct Client *, int, char **);

struct Message who_msgtab = {
  "WHO", 0, 0, 2, 0, MFLG_SLOW, 0,
  {m_unregistered, m_who, ms_who, m_ignore, m_who, m_ignore}
};

#ifndef STATIC_MODULES
void
_modinit(void)
{
  mod_add_cmd(&who_msgtab);
}

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

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

static void who_global(struct Client *, char *, int);
static void do_who(struct Client *, struct Client *,
                   const char *, const char *);
static void do_who_on_channel(struct Client *, struct Channel *, const char *,
                              int, int);

/*
** m_who
**      parv[0] = sender prefix
**      parv[1] = nickname mask list
**      parv[2] = additional selection flag, only 'o' for now.
*/
static void
m_who(struct Client *client_p, struct Client *source_p,
      int parc, char *parv[])
{
  struct Client *target_p;
  char *mask = parv[1];
  dlink_node *lp;
  int server_oper = parc > 2 ? (*parv[2] == 'o') : 0; /* Show OPERS only */
  struct Channel *chptr;
  const char *from, *to;

  if (IsCapable(source_p->from, CAP_TS6) && HasID(source_p))
  {
    from = me.id;
    to = source_p->id;
  }
  else
  {
    from = me.name;
    to = source_p->name;
  }

  /* See if mask is there, collapse it or return if not there */
  if (mask == NULL || !*mask)
  {
    who_global(source_p, mask, server_oper);
    sendto_one(source_p, form_str(RPL_ENDOFWHO),
               from, to, "*");
    return;
  }

  /* mask isn't NULL at this point. repeat after me... -db */
  collapse(mask);

  /* '/who *' */
  if (mask[0] == '*' && !mask[1])
  {
    if ((lp = source_p->channel.head) != NULL)
    {
      struct Channel *mychannel = ((struct Membership *)lp->data)->chptr;
      do_who_on_channel(source_p, mychannel, mychannel->chname, YES,
                        server_oper);
    }

    sendto_one(source_p, form_str(RPL_ENDOFWHO), from, to, "*");
    return;
  }

  /* '/who #some_channel' */
  if (IsChanPrefix(*mask))
  {
    /* List all users on a given channel */
    if ((chptr = hash_find_channel(mask)) != NULL)
    {
      if (IsMember(source_p, chptr))
        do_who_on_channel(source_p, chptr, chptr->chname, YES, server_oper);
      else if (!SecretChannel(chptr))
        do_who_on_channel(source_p, chptr, chptr->chname, NO, server_oper);
    }

    sendto_one(source_p, form_str(RPL_ENDOFWHO),
               from, to, mask);
    return;
  }

  /* '/who nick' */
  if (((target_p = find_client(mask)) != NULL) &&
      IsClient(target_p) && (!server_oper || IsOper(target_p)))
  {
    if (IsServer(client_p))
      client_burst_if_needed(client_p,target_p);

    DLINK_FOREACH(lp, target_p->channel.head)
    {
      chptr = ((struct Membership *) lp->data)->chptr;
      if (PubChannel(chptr) || IsMember(source_p, chptr))
        break;
    }

    if (lp != NULL)
      do_who(source_p, target_p, chptr->chname,
             get_member_status(lp->data, NO));
    else
      do_who(source_p, target_p, NULL, "");

    sendto_one(source_p, form_str(RPL_ENDOFWHO),
               from, to, mask);
    return;
  }

  /* '/who 0' */
  if (mask[0] == '0' && !mask[1])
    who_global(source_p, NULL, server_oper);
  else
    who_global(source_p, mask, server_oper);

 /* Wasn't a nick, wasn't a channel, wasn't a '*' so ... */
  sendto_one(source_p, form_str(RPL_ENDOFWHO),
             from, to, mask);
}

/* who_common_channel
 * inputs       - pointer to client requesting who
 *              - pointer to channel member chain.
 *              - char * mask to match
 *              - int if oper on a server or not
 *              - pointer to int maxmatches
 * output       - NONE
 * side effects - lists matching clients on specified channel,
 *                marks matched clients.
 *
 */
static void
who_common_channel(struct Client *source_p, struct Channel *chptr,
                   char *mask, int server_oper, int *maxmatches)
{
  dlink_node *ptr;
  struct Client *target_p;

  DLINK_FOREACH(ptr, chptr->members.head)
  {
    target_p = ((struct Membership *)ptr->data)->client_p;

    if (!IsInvisible(target_p) || IsMarked(target_p))
      continue;

    if (server_oper && !IsOper(target_p))
      continue;

    SetMark(target_p);

    assert(target_p->servptr != NULL);

    if ((mask == NULL) ||
      match(mask, target_p->name) || match(mask, target_p->username) ||
      match(mask, target_p->host) || 
      ((!ConfigServerHide.hide_servers || IsOper(source_p)) &&
       match(mask, target_p->servptr->name)) ||
      match(mask, target_p->info))
    {
      do_who(source_p, target_p, NULL, "");

      if (*maxmatches > 0)
      {
        if (--(*maxmatches) == 0)
          return;
      }
    }
  }
}

/* who_global()
 *
 * inputs       - pointer to client requesting who
 *              - char * mask to match
 *              - int if oper on a server or not
 * output       - NONE
 * side effects - do a global scan of all clients looking for match
 *                this is slightly expensive on EFnet ...
 */
static void
who_global(struct Client *source_p, char *mask, int server_oper)
{
  struct Channel *chptr;
  struct Client *target_p;
  dlink_node *lp;
  dlink_node *lp_next;
  dlink_node *gcptr;
  dlink_node *gcptr_next;
  int maxmatches = 500;

  if (!IsOper(source_p))
  {
    if ((last_used + ConfigFileEntry.pace_wait) > CurrentTime)
    {
      /* safe enough to give this on a local connect only */
      sendto_one(source_p, form_str(RPL_LOAD2HI),
        me.name, source_p->name);
      return;
    }
    else
      last_used = CurrentTime;
  }

  /* first, list all matching invisible clients on common channels */
  DLINK_FOREACH_SAFE(lp, lp_next, source_p->channel.head)
  {
    chptr = ((struct Membership *)lp->data)->chptr;
    who_common_channel(source_p, chptr, mask, server_oper, &maxmatches);
  }

  /* second, list all matching visible clients */
  DLINK_FOREACH_SAFE(gcptr, gcptr_next, global_client_list.head)
  {
    target_p = gcptr->data;

    if (!IsClient(target_p))
      continue;

    if (IsInvisible(target_p))
    {
      ClearMark(target_p);
      continue;
    }

    if (server_oper && !IsOper(target_p))
      continue;

    assert(target_p->servptr != NULL);

    if (!mask ||
        match(mask, target_p->name) || match(mask, target_p->username) ||
        match(mask, target_p->host) || match(mask, target_p->servptr->name) ||
        match(mask, target_p->info))
    {
      do_who(source_p, target_p, NULL, "");

      if (maxmatches > 0)
      {
        if (--maxmatches == 0)
          return;
      }
    }
  }
}

/* do_who_on_channel()
 *
 * inputs       - pointer to client requesting who
 *              - pointer to channel to do who on
 *              - The "real name" of this channel
 *              - int if source_p is a server oper or not
 *              - int if client is member or not
 *              - int server_op flag
 * output       - NONE
 * side effects - do a who on given channel
 */
static void
do_who_on_channel(struct Client *source_p, struct Channel *chptr,
                  const char *chname, int member, int server_oper)
{
  dlink_node *ptr = NULL, *ptr_next = NULL;
  struct Client *target_p;
  struct Membership *ms;

  DLINK_FOREACH_SAFE(ptr, ptr_next, chptr->members.head)
  {
    ms = ptr->data;
    target_p = ms->client_p;

    if (member || !IsInvisible(target_p))
    {
      if (server_oper && !IsOper(target_p))
        continue;
      do_who(source_p, target_p, chname, get_member_status(ms, NO));
    }
  }
}

/* do_who()
 *
 * inputs       - pointer to client requesting who
 *              - pointer to client to do who on
 *              - The reported name
 *              - channel flags
 * output       - NONE
 * side effects - do a who on given person
 */
static void
do_who(struct Client *source_p, struct Client *target_p,
       const char *chname, const char *op_flags)
{
  char status[6];
  const char *from, *to;

  if (IsCapable(source_p->from, CAP_TS6) && HasID(source_p))
  {
    from = me.id;
    to = source_p->id;
  }
  else
  {
    from = me.name;
    to = source_p->name;
  }

  if (IsOper(source_p))
    ircsprintf(status, "%c%s%s%s", 
               target_p->away ? 'G' : 'H',
               IsOper(target_p) ? "*" : "", IsCaptured(target_p) ? "#" : "", op_flags);
  else
    ircsprintf(status, "%c%s%s", target_p->away ? 'G' : 'H',
               IsOper(target_p) ? "*" : "", op_flags);

  if (ConfigServerHide.hide_servers)
  {
    sendto_one(source_p, form_str(RPL_WHOREPLY), from, to,
               (chname) ? (chname) : "*",
               target_p->username, target_p->host,
               IsOper(source_p) ? target_p->servptr->name : "*",
               target_p->name, status, 0, target_p->info);
  }
  else
  {
    sendto_one(source_p, form_str(RPL_WHOREPLY), from, to,
               (chname) ? (chname) : "*",
               target_p->username,
               target_p->host, target_p->servptr->name, target_p->name,
               status, target_p->hopcount, target_p->info);
  }
}

/*
** ms_who()
**      parv[0] = sender prefix
**      parv[1] = nickname mask list
**      parv[2] = additional selection flag, only 'o' for now.
*/
static void
ms_who(struct Client *client_p, struct Client *source_p,
       int parc, char *parv[])
{
  /*
   * If it's running as a hub, and linked with lazy links
   * then allow leaf to use normal client m_who()
   * other wise, ignore it.
   */
  if (IsClient(source_p) && ServerInfo.hub &&
      IsCapable(client_p->from, CAP_LL))
    m_who(client_p, source_p, parc, parv);
}
Revision:	314
Committed:	Fri Dec 23 10:59:55 2005 UTC (20 years, 7 months ago) by michael
Content type:	text/x-csrc
File size:	10603 byte(s)
Log Message:	- Don't pace "WHO #somechan" and "WHO *" as this breaks several clients
#	User	Rev	Content
1	adx	30	/*
2			* ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
3			* m_who.c: Shows who is on 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			#include "stdinc.h"
25			#include "common.h"
26			#include "handlers.h"
27			#include "client.h"
28			#include "channel.h"
29			#include "channel_mode.h"
30			#include "hash.h"
31			#include "ircd.h"
32			#include "numeric.h"
33			#include "s_serv.h"
34			#include "send.h"
35			#include "s_conf.h"
36			#include "msg.h"
37			#include "parse.h"
38			#include "modules.h"
39
40	adx	270	static time_t last_used = 0;
41
42	adx	30	static void m_who(struct Client , struct Client , int, char **);
43			static void ms_who(struct Client , struct Client , int, char **);
44
45			struct Message who_msgtab = {
46			"WHO", 0, 0, 2, 0, MFLG_SLOW, 0,
47			{m_unregistered, m_who, ms_who, m_ignore, m_who, m_ignore}
48			};
49
50			#ifndef STATIC_MODULES
51			void
52			_modinit(void)
53			{
54			mod_add_cmd(&who_msgtab);
55			}
56
57			void
58			_moddeinit(void)
59			{
60			mod_del_cmd(&who_msgtab);
61			}
62
63	knight	31	const char *_version = "$Revision$";
64	adx	30	#endif
65
66	michael	314	static void who_global(struct Client , char , int);
67			static void do_who(struct Client , struct Client ,
68			const char , const char );
69			static void do_who_on_channel(struct Client , struct Channel , const char *,
70			int, int);
71	adx	30
72			/*
73			** m_who
74			** parv[0] = sender prefix
75			** parv[1] = nickname mask list
76			** parv[2] = additional selection flag, only 'o' for now.
77			*/
78			static void
79			m_who(struct Client client_p, struct Client source_p,
80			int parc, char *parv[])
81			{
82			struct Client *target_p;
83			char *mask = parv[1];
84			dlink_node *lp;
85			int server_oper = parc > 2 ? (parv[2] == 'o') : 0; / Show OPERS only */
86			struct Channel *chptr;
87			const char from, to;
88
89			if (IsCapable(source_p->from, CAP_TS6) && HasID(source_p))
90			{
91			from = me.id;
92			to = source_p->id;
93			}
94			else
95			{
96			from = me.name;
97			to = source_p->name;
98			}
99
100			/* See if mask is there, collapse it or return if not there */
101			if (mask == NULL \|\| !*mask)
102			{
103			who_global(source_p, mask, server_oper);
104			sendto_one(source_p, form_str(RPL_ENDOFWHO),
105			from, to, "*");
106			return;
107			}
108
109			/* mask isn't NULL at this point. repeat after me... -db */
110			collapse(mask);
111
112			/* '/who ' /
113			if (mask[0] == '*' && !mask[1])
114			{
115			if ((lp = source_p->channel.head) != NULL)
116			{
117			struct Channel mychannel = ((struct Membership )lp->data)->chptr;
118			do_who_on_channel(source_p, mychannel, mychannel->chname, YES,
119			server_oper);
120			}
121
122			sendto_one(source_p, form_str(RPL_ENDOFWHO), from, to, "*");
123			return;
124			}
125
126			/* '/who #some_channel' */
127			if (IsChanPrefix(*mask))
128			{
129			/* List all users on a given channel */
130			if ((chptr = hash_find_channel(mask)) != NULL)
131			{
132			if (IsMember(source_p, chptr))
133			do_who_on_channel(source_p, chptr, chptr->chname, YES, server_oper);
134			else if (!SecretChannel(chptr))
135			do_who_on_channel(source_p, chptr, chptr->chname, NO, server_oper);
136			}
137
138			sendto_one(source_p, form_str(RPL_ENDOFWHO),
139			from, to, mask);
140			return;
141			}
142
143			/* '/who nick' */
144			if (((target_p = find_client(mask)) != NULL) &&
145			IsClient(target_p) && (!server_oper \|\| IsOper(target_p)))
146			{
147			if (IsServer(client_p))
148			client_burst_if_needed(client_p,target_p);
149
150			DLINK_FOREACH(lp, target_p->channel.head)
151			{
152			chptr = ((struct Membership *) lp->data)->chptr;
153			if (PubChannel(chptr) \|\| IsMember(source_p, chptr))
154			break;
155			}
156
157			if (lp != NULL)
158			do_who(source_p, target_p, chptr->chname,
159			get_member_status(lp->data, NO));
160			else
161			do_who(source_p, target_p, NULL, "");
162
163			sendto_one(source_p, form_str(RPL_ENDOFWHO),
164			from, to, mask);
165			return;
166			}
167
168			/* '/who 0' */
169			if (mask[0] == '0' && !mask[1])
170			who_global(source_p, NULL, server_oper);
171			else
172			who_global(source_p, mask, server_oper);
173
174			/* Wasn't a nick, wasn't a channel, wasn't a '' so ... /
175			sendto_one(source_p, form_str(RPL_ENDOFWHO),
176			from, to, mask);
177			}
178
179			/* who_common_channel
180			* inputs - pointer to client requesting who
181			* - pointer to channel member chain.
182			* - char * mask to match
183			* - int if oper on a server or not
184			* - pointer to int maxmatches
185			* output - NONE
186			* side effects - lists matching clients on specified channel,
187			* marks matched clients.
188			*
189			*/
190			static void
191			who_common_channel(struct Client source_p, struct Channel chptr,
192			char mask, int server_oper, int maxmatches)
193			{
194			dlink_node *ptr;
195			struct Client *target_p;
196
197			DLINK_FOREACH(ptr, chptr->members.head)
198			{
199			target_p = ((struct Membership *)ptr->data)->client_p;
200
201			if (!IsInvisible(target_p) \|\| IsMarked(target_p))
202			continue;
203
204			if (server_oper && !IsOper(target_p))
205			continue;
206
207			SetMark(target_p);
208
209			assert(target_p->servptr != NULL);
210
211			if ((mask == NULL) \|\|
212	adx	270	match(mask, target_p->name) \|\| match(mask, target_p->username) \|\|
213			match(mask, target_p->host) \|\|
214			((!ConfigServerHide.hide_servers \|\| IsOper(source_p)) &&
215			match(mask, target_p->servptr->name)) \|\|
216			match(mask, target_p->info))
217	adx	30	{
218			do_who(source_p, target_p, NULL, "");
219
220			if (*maxmatches > 0)
221			{
222	adx	270	if (--(*maxmatches) == 0)
223			return;
224	adx	30	}
225			}
226			}
227			}
228
229			/* who_global()
230			*
231			* inputs - pointer to client requesting who
232			* - char * mask to match
233			* - int if oper on a server or not
234			* output - NONE
235			* side effects - do a global scan of all clients looking for match
236			* this is slightly expensive on EFnet ...
237			*/
238			static void
239			who_global(struct Client source_p, char mask, int server_oper)
240			{
241			struct Channel *chptr;
242			struct Client *target_p;
243			dlink_node *lp;
244			dlink_node *lp_next;
245			dlink_node *gcptr;
246			dlink_node *gcptr_next;
247			int maxmatches = 500;
248
249	adx	270	if (!IsOper(source_p))
250			{
251			if ((last_used + ConfigFileEntry.pace_wait) > CurrentTime)
252			{
253			/* safe enough to give this on a local connect only */
254			sendto_one(source_p, form_str(RPL_LOAD2HI),
255			me.name, source_p->name);
256			return;
257			}
258			else
259			last_used = CurrentTime;
260			}
261
262	adx	30	/* first, list all matching invisible clients on common channels */
263			DLINK_FOREACH_SAFE(lp, lp_next, source_p->channel.head)
264			{
265			chptr = ((struct Membership *)lp->data)->chptr;
266			who_common_channel(source_p, chptr, mask, server_oper, &maxmatches);
267			}
268
269			/* second, list all matching visible clients */
270			DLINK_FOREACH_SAFE(gcptr, gcptr_next, global_client_list.head)
271			{
272			target_p = gcptr->data;
273
274			if (!IsClient(target_p))
275			continue;
276
277			if (IsInvisible(target_p))
278			{
279			ClearMark(target_p);
280			continue;
281			}
282
283			if (server_oper && !IsOper(target_p))
284			continue;
285
286			assert(target_p->servptr != NULL);
287
288			if (!mask \|\|
289			match(mask, target_p->name) \|\| match(mask, target_p->username) \|\|
290	adx	270	match(mask, target_p->host) \|\| match(mask, target_p->servptr->name) \|\|
291			match(mask, target_p->info))
292	adx	30	{
293			do_who(source_p, target_p, NULL, "");
294
295			if (maxmatches > 0)
296			{
297			if (--maxmatches == 0)
298	adx	270	return;
299	adx	30	}
300			}
301			}
302			}
303
304			/* do_who_on_channel()
305			*
306			* inputs - pointer to client requesting who
307			* - pointer to channel to do who on
308			* - The "real name" of this channel
309			* - int if source_p is a server oper or not
310			* - int if client is member or not
311			* - int server_op flag
312			* output - NONE
313			* side effects - do a who on given channel
314			*/
315			static void
316			do_who_on_channel(struct Client source_p, struct Channel chptr,
317			const char *chname, int member, int server_oper)
318			{
319	michael	314	dlink_node ptr = NULL, ptr_next = NULL;
320	adx	30	struct Client *target_p;
321			struct Membership *ms;
322
323			DLINK_FOREACH_SAFE(ptr, ptr_next, chptr->members.head)
324			{
325			ms = ptr->data;
326			target_p = ms->client_p;
327
328			if (member \|\| !IsInvisible(target_p))
329			{
330			if (server_oper && !IsOper(target_p))
331	adx	270	continue;
332	adx	30	do_who(source_p, target_p, chname, get_member_status(ms, NO));
333			}
334			}
335			}
336
337			/* do_who()
338			*
339			* inputs - pointer to client requesting who
340			* - pointer to client to do who on
341			* - The reported name
342			* - channel flags
343			* output - NONE
344			* side effects - do a who on given person
345			*/
346			static void
347			do_who(struct Client source_p, struct Client target_p,
348			const char chname, const char op_flags)
349			{
350			char status[6];
351			const char from, to;
352
353			if (IsCapable(source_p->from, CAP_TS6) && HasID(source_p))
354			{
355			from = me.id;
356			to = source_p->id;
357			}
358			else
359			{
360			from = me.name;
361			to = source_p->name;
362			}
363
364			if (IsOper(source_p))
365			ircsprintf(status, "%c%s%s%s",
366			target_p->away ? 'G' : 'H',
367			IsOper(target_p) ? "*" : "", IsCaptured(target_p) ? "#" : "", op_flags);
368			else
369			ircsprintf(status, "%c%s%s", target_p->away ? 'G' : 'H',
370			IsOper(target_p) ? "*" : "", op_flags);
371
372			if (ConfigServerHide.hide_servers)
373			{
374			sendto_one(source_p, form_str(RPL_WHOREPLY), from, to,
375			(chname) ? (chname) : "*",
376			target_p->username, target_p->host,
377			IsOper(source_p) ? target_p->servptr->name : "*",
378			target_p->name, status, 0, target_p->info);
379			}
380			else
381			{
382			sendto_one(source_p, form_str(RPL_WHOREPLY), from, to,
383			(chname) ? (chname) : "*",
384			target_p->username,
385			target_p->host, target_p->servptr->name, target_p->name,
386			status, target_p->hopcount, target_p->info);
387			}
388			}
389
390			/*
391			** ms_who()
392			** parv[0] = sender prefix
393			** parv[1] = nickname mask list
394			** parv[2] = additional selection flag, only 'o' for now.
395			*/
396			static void
397			ms_who(struct Client client_p, struct Client source_p,
398			int parc, char *parv[])
399			{
400	michael	314	/*
401			* If it's running as a hub, and linked with lazy links
402	adx	30	* then allow leaf to use normal client m_who()
403			* other wise, ignore it.
404			*/
405			if (IsClient(source_p) && ServerInfo.hub &&
406			IsCapable(client_p->from, CAP_LL))
407			m_who(client_p, source_p, parc, parv);
408			}