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 (19 years, 10 months 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
#	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 "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	knight	31	const char *_version = "$Revision$";
66	adx	30	#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			}