trunk/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 "tools.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 "list.h"
#include "irc_string.h"
#include "sprintf_irc.h"
#include "s_conf.h"
#include "msg.h"
#include "parse.h"
#include "modules.h"

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 *source_p, char *mask, int server_oper);
static void do_who(struct Client *source_p, struct Client *target_p,
                   const char *chname, const char *op_flags);
static void do_who_on_channel(struct Client *source_p, struct Channel *chptr,
                              const char *chname, int member, int server_oper);

/*
** 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;

  /* 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;
  dlink_node *ptr_next;
  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 its 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:	32
Committed:	Sun Oct 2 20:41:23 2005 UTC (21 years ago) by knight
Content type:	text/x-csrc
Original Path:	*ircd-hybrid/modules/m_who.c*
File size:	10371 byte(s)
Log Message:	- svn:keywords
#	Content
1	/*
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	* $Id$
23	*/
24	#include "stdinc.h"
25	#include "tools.h"
26	#include "common.h"
27	#include "handlers.h"
28	#include "client.h"
29	#include "channel.h"
30	#include "channel_mode.h"
31	#include "hash.h"
32	#include "ircd.h"
33	#include "numeric.h"
34	#include "s_serv.h"
35	#include "send.h"
36	#include "list.h"
37	#include "irc_string.h"
38	#include "sprintf_irc.h"
39	#include "s_conf.h"
40	#include "msg.h"
41	#include "parse.h"
42	#include "modules.h"
43
44	static void m_who(struct Client , struct Client , int, char **);
45	static void ms_who(struct Client , struct Client , int, char **);
46
47	struct Message who_msgtab = {
48	"WHO", 0, 0, 2, 0, MFLG_SLOW, 0,
49	{m_unregistered, m_who, ms_who, m_ignore, m_who, m_ignore}
50	};
51
52	#ifndef STATIC_MODULES
53	void
54	_modinit(void)
55	{
56	mod_add_cmd(&who_msgtab);
57	}
58
59	void
60	_moddeinit(void)
61	{
62	mod_del_cmd(&who_msgtab);
63	}
64
65	const char *_version = "$Revision$";
66	#endif
67
68	static void who_global(struct Client source_p, char mask, int server_oper);
69	static void do_who(struct Client source_p, struct Client target_p,
70	const char chname, const char op_flags);
71	static void do_who_on_channel(struct Client source_p, struct Channel chptr,
72	const char *chname, int member, int server_oper);
73
74	/*
75	** m_who
76	** parv[0] = sender prefix
77	** parv[1] = nickname mask list
78	** parv[2] = additional selection flag, only 'o' for now.
79	*/
80	static void
81	m_who(struct Client client_p, struct Client source_p,
82	int parc, char *parv[])
83	{
84	struct Client *target_p;
85	char *mask = parv[1];
86	dlink_node *lp;
87	int server_oper = parc > 2 ? (parv[2] == 'o') : 0; / Show OPERS only */
88	struct Channel *chptr;
89	const char from, to;
90
91	if (IsCapable(source_p->from, CAP_TS6) && HasID(source_p))
92	{
93	from = me.id;
94	to = source_p->id;
95	}
96	else
97	{
98	from = me.name;
99	to = source_p->name;
100	}
101
102	/* See if mask is there, collapse it or return if not there */
103	if (mask == NULL \|\| !*mask)
104	{
105	who_global(source_p, mask, server_oper);
106	sendto_one(source_p, form_str(RPL_ENDOFWHO),
107	from, to, "*");
108	return;
109	}
110
111	/* mask isn't NULL at this point. repeat after me... -db */
112	collapse(mask);
113
114	/* '/who ' /
115	if (mask[0] == '*' && !mask[1])
116	{
117	if ((lp = source_p->channel.head) != NULL)
118	{
119	struct Channel mychannel = ((struct Membership )lp->data)->chptr;
120	do_who_on_channel(source_p, mychannel, mychannel->chname, YES,
121	server_oper);
122	}
123
124	sendto_one(source_p, form_str(RPL_ENDOFWHO), from, to, "*");
125	return;
126	}
127
128	/* '/who #some_channel' */
129	if (IsChanPrefix(*mask))
130	{
131	/* List all users on a given channel */
132	if ((chptr = hash_find_channel(mask)) != NULL)
133	{
134	if (IsMember(source_p, chptr))
135	do_who_on_channel(source_p, chptr, chptr->chname, YES, server_oper);
136	else if (!SecretChannel(chptr))
137	do_who_on_channel(source_p, chptr, chptr->chname, NO, server_oper);
138	}
139
140	sendto_one(source_p, form_str(RPL_ENDOFWHO),
141	from, to, mask);
142	return;
143	}
144
145	/* '/who nick' */
146	if (((target_p = find_client(mask)) != NULL) &&
147	IsClient(target_p) && (!server_oper \|\| IsOper(target_p)))
148	{
149	if (IsServer(client_p))
150	client_burst_if_needed(client_p,target_p);
151
152	DLINK_FOREACH(lp, target_p->channel.head)
153	{
154	chptr = ((struct Membership *) lp->data)->chptr;
155	if (PubChannel(chptr) \|\| IsMember(source_p, chptr))
156	break;
157	}
158
159	if (lp != NULL)
160	do_who(source_p, target_p, chptr->chname,
161	get_member_status(lp->data, NO));
162	else
163	do_who(source_p, target_p, NULL, "");
164
165	sendto_one(source_p, form_str(RPL_ENDOFWHO),
166	from, to, mask);
167	return;
168	}
169
170	/* '/who 0' */
171	if (mask[0] == '0' && !mask[1])
172	who_global(source_p, NULL, server_oper);
173	else
174	who_global(source_p, mask, server_oper);
175
176	/* Wasn't a nick, wasn't a channel, wasn't a '' so ... /
177	sendto_one(source_p, form_str(RPL_ENDOFWHO),
178	from, to, mask);
179	}
180
181	/* who_common_channel
182	* inputs - pointer to client requesting who
183	* - pointer to channel member chain.
184	* - char * mask to match
185	* - int if oper on a server or not
186	* - pointer to int maxmatches
187	* output - NONE
188	* side effects - lists matching clients on specified channel,
189	* marks matched clients.
190	*
191	*/
192	static void
193	who_common_channel(struct Client source_p, struct Channel chptr,
194	char mask, int server_oper, int maxmatches)
195	{
196	dlink_node *ptr;
197	struct Client *target_p;
198
199	DLINK_FOREACH(ptr, chptr->members.head)
200	{
201	target_p = ((struct Membership *)ptr->data)->client_p;
202
203	if (!IsInvisible(target_p) \|\| IsMarked(target_p))
204	continue;
205
206	if (server_oper && !IsOper(target_p))
207	continue;
208
209	SetMark(target_p);
210
211	assert(target_p->servptr != NULL);
212
213	if ((mask == NULL) \|\|
214	match(mask, target_p->name) \|\| match(mask, target_p->username) \|\|
215	match(mask, target_p->host) \|\|
216	((!ConfigServerHide.hide_servers \|\| IsOper(source_p)) &&
217	match(mask, target_p->servptr->name)) \|\|
218	match(mask, target_p->info))
219	{
220	do_who(source_p, target_p, NULL, "");
221
222	if (*maxmatches > 0)
223	{
224	if (--(*maxmatches) == 0)
225	return;
226	}
227	}
228	}
229	}
230
231	/* who_global()
232	*
233	* inputs - pointer to client requesting who
234	* - char * mask to match
235	* - int if oper on a server or not
236	* output - NONE
237	* side effects - do a global scan of all clients looking for match
238	* this is slightly expensive on EFnet ...
239	*/
240	static void
241	who_global(struct Client source_p, char mask, int server_oper)
242	{
243	struct Channel *chptr;
244	struct Client *target_p;
245	dlink_node *lp;
246	dlink_node *lp_next;
247	dlink_node *gcptr;
248	dlink_node *gcptr_next;
249	int maxmatches = 500;
250
251	/* first, list all matching invisible clients on common channels */
252	DLINK_FOREACH_SAFE(lp, lp_next, source_p->channel.head)
253	{
254	chptr = ((struct Membership *)lp->data)->chptr;
255	who_common_channel(source_p, chptr, mask, server_oper, &maxmatches);
256	}
257
258	/* second, list all matching visible clients */
259	DLINK_FOREACH_SAFE(gcptr, gcptr_next, global_client_list.head)
260	{
261	target_p = gcptr->data;
262
263	if (!IsClient(target_p))
264	continue;
265
266	if (IsInvisible(target_p))
267	{
268	ClearMark(target_p);
269	continue;
270	}
271
272	if (server_oper && !IsOper(target_p))
273	continue;
274
275	assert(target_p->servptr != NULL);
276
277	if (!mask \|\|
278	match(mask, target_p->name) \|\| match(mask, target_p->username) \|\|
279	match(mask, target_p->host) \|\| match(mask, target_p->servptr->name) \|\|
280	match(mask, target_p->info))
281	{
282	do_who(source_p, target_p, NULL, "");
283
284	if (maxmatches > 0)
285	{
286	if (--maxmatches == 0)
287	return;
288	}
289	}
290	}
291	}
292
293	/* do_who_on_channel()
294	*
295	* inputs - pointer to client requesting who
296	* - pointer to channel to do who on
297	* - The "real name" of this channel
298	* - int if source_p is a server oper or not
299	* - int if client is member or not
300	* - int server_op flag
301	* output - NONE
302	* side effects - do a who on given channel
303	*/
304	static void
305	do_who_on_channel(struct Client source_p, struct Channel chptr,
306	const char *chname, int member, int server_oper)
307	{
308	dlink_node *ptr;
309	dlink_node *ptr_next;
310	struct Client *target_p;
311	struct Membership *ms;
312
313	DLINK_FOREACH_SAFE(ptr, ptr_next, chptr->members.head)
314	{
315	ms = ptr->data;
316	target_p = ms->client_p;
317
318	if (member \|\| !IsInvisible(target_p))
319	{
320	if (server_oper && !IsOper(target_p))
321	continue;
322	do_who(source_p, target_p, chname, get_member_status(ms, NO));
323	}
324	}
325	}
326
327	/* do_who()
328	*
329	* inputs - pointer to client requesting who
330	* - pointer to client to do who on
331	* - The reported name
332	* - channel flags
333	* output - NONE
334	* side effects - do a who on given person
335	*/
336	static void
337	do_who(struct Client source_p, struct Client target_p,
338	const char chname, const char op_flags)
339	{
340	char status[6];
341	const char from, to;
342
343	if (IsCapable(source_p->from, CAP_TS6) && HasID(source_p))
344	{
345	from = me.id;
346	to = source_p->id;
347	}
348	else
349	{
350	from = me.name;
351	to = source_p->name;
352	}
353
354	if (IsOper(source_p))
355	ircsprintf(status, "%c%s%s%s",
356	target_p->away ? 'G' : 'H',
357	IsOper(target_p) ? "*" : "", IsCaptured(target_p) ? "#" : "", op_flags);
358	else
359	ircsprintf(status, "%c%s%s", target_p->away ? 'G' : 'H',
360	IsOper(target_p) ? "*" : "", op_flags);
361
362	if (ConfigServerHide.hide_servers)
363	{
364	sendto_one(source_p, form_str(RPL_WHOREPLY), from, to,
365	(chname) ? (chname) : "*",
366	target_p->username, target_p->host,
367	IsOper(source_p) ? target_p->servptr->name : "*",
368	target_p->name, status, 0, target_p->info);
369	}
370	else
371	{
372	sendto_one(source_p, form_str(RPL_WHOREPLY), from, to,
373	(chname) ? (chname) : "*",
374	target_p->username,
375	target_p->host, target_p->servptr->name, target_p->name,
376	status, target_p->hopcount, target_p->info);
377	}
378	}
379
380	/*
381	** ms_who()
382	** parv[0] = sender prefix
383	** parv[1] = nickname mask list
384	** parv[2] = additional selection flag, only 'o' for now.
385	*/
386	static void
387	ms_who(struct Client client_p, struct Client source_p,
388	int parc, char *parv[])
389	{
390	/* If its running as a hub, and linked with lazy links
391	* then allow leaf to use normal client m_who()
392	* other wise, ignore it.
393	*/
394	if (IsClient(source_p) && ServerInfo.hub &&
395	IsCapable(client_p->from, CAP_LL))
396	m_who(client_p, source_p, parc, parv);
397	}