ircd-hybrid-7.2/modules/m_ison.c

/*
 *  ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
 *  m_ison.c: Provides a single line answer of whether a user is online.
 *
 *  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: m_ison.c,v 1.39 2005/08/17 16:02:51 michael Exp $
 */

#include "stdinc.h"
#include "handlers.h"
#include "client.h"
#include "irc_string.h"
#include "sprintf_irc.h"
#include "ircd.h"
#include "numeric.h"
#include "send.h"
#include "msg.h"
#include "parse.h"
#include "modules.h"
#include "s_conf.h" /* ConfigFileEntry */
#include "s_serv.h" /* uplink/IsCapable */

static void do_ison(struct Client *, struct Client *, struct Client *, int, char *[]);
static void m_ison(struct Client *, struct Client *, int, char *[]);
static void ms_ison(struct Client *, struct Client *, int, char *[]);

struct Message ison_msgtab = {
  "ISON", 0, 0, 1, 1, MFLG_SLOW, 0,
  {m_unregistered, m_ison, ms_ison, m_ignore, m_ison, m_ignore}
};

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

void
_moddeinit(void)
{
  mod_del_cmd(&ison_msgtab);
}
const char *_version = "$Revision: 1.39 $";
#endif


/*
 * m_ison added by Darren Reed 13/8/91 to act as an efficent user indicator
 * with respect to cpu/bandwidth used. Implemented for NOTIFY feature in
 * clients. Designed to reduce number of whois requests. Can process
 * nicknames in batches as long as the maximum buffer length.
 *
 * format:
 * ISON :nicklist
 */
static void
m_ison(struct Client *client_p, struct Client *source_p,
       int parc, char *parv[])
{
  struct Client *up = NULL;

  if (!ServerInfo.hub && uplink && IsCapable(uplink, CAP_LL))
    up = uplink;

  do_ison(client_p, up, source_p, parc, parv);
}

/*
 * ms_ison added by David Taylor 04/01/2000 to handle relayed ISON requests.
 * It's slightly less bandwidth efficient than a normal ISON, but it's
 * only ever going to get relayed over one link...
 * Plus, we'll only ever relay each nick once in it's lifetime, if it
 * exists...
 * ISON :nicklist
 */
static void
ms_ison(struct Client *client_p, struct Client *source_p,
        int parc, char *parv[])
{
  if (ServerInfo.hub && IsCapable(client_p, CAP_LL))
    do_ison(client_p, NULL, source_p, parc, parv);
}

static void
do_ison(struct Client *client_p, struct Client *up, struct Client *source_p,
        int parc, char *parv[])
{
  struct Client *target_p = NULL;
  char *nick;
  char *p;
  char *current_insert_point, *current_insert_point2;
  char buf[IRCD_BUFSIZE];
  char buf2[IRCD_BUFSIZE];
  int len;
  int i;
  int done = 0;
  int relay_to_hub = 0;

  current_insert_point2 = buf2;
  *buf2 = '\0';

  len = ircsprintf(buf, form_str(RPL_ISON), me.name, parv[0]);
  current_insert_point = buf + len;

  /* rfc1459 is ambigious about how to handle ISON
   * this should handle both interpretations.
   */
  for (i = 1; i < parc; i++)
  {
    for (nick = strtoken(&p, parv[i], " "); nick;
         nick = strtoken(&p, NULL, " "))
    {
      if ((target_p = find_person(client_p, nick)))
      {
        len = strlen(target_p->name);

        if ((current_insert_point + (len + 5)) < (buf + sizeof(buf)))
        {
          memcpy(current_insert_point, target_p->name, len);
          current_insert_point += len;
          *current_insert_point++ = ' ';
        }
        else
        {
          done = 1;
          break;
        }
      }

      if (up)
      {
        /* Build up a single list, for use if we relay.. */
        len = strlen(nick);

        if ((current_insert_point2 + len + 5) < (buf2 + sizeof(buf2)))
        {
          memcpy(current_insert_point2, nick, len);
          current_insert_point2 += len;
          *current_insert_point2++ = ' ';
        }

        if (target_p == NULL)
        {
          /*
           * XXX Ick. we need to ask our hub if nick is online.
           * it's probably safest to relay the whole command,
           * unless we can answer it fully ourselves.
           * -davidt
           */
          relay_to_hub = 1;

          /* Also cache info about nick */
          sendto_one(up, ":%s NBURST %s", ID_or_name(&me, up), nick);
        }
      }
    }

    if (done)
      break;
  }

  /*  current_insert_point--;
   *  Do NOT take out the trailing space, it breaks ircII
   *  --Rodder */

  *current_insert_point  = '\0';
  *current_insert_point2 = '\0'; 
  
  if (relay_to_hub)
    sendto_one(up, ":%s ISON :%s", ID_or_name(source_p, up), buf2);
  else
    sendto_one(source_p, "%s", buf);
}
Revision:	30
Committed:	Sun Oct 2 20:03:27 2005 UTC (20 years, 9 months ago) by adx
Content type:	text/x-csrc
Original Path:	*ircd-hybrid/modules/m_ison.c*
File size:	5224 byte(s)
Log Message:	- imported sources - can be moved later according to the directory/branching scheme, but we need the svn up
#	User	Rev	Content
1	adx	30	/*
2			* ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
3			* m_ison.c: Provides a single line answer of whether a user is online.
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: m_ison.c,v 1.39 2005/08/17 16:02:51 michael Exp $
23			*/
24
25			#include "stdinc.h"
26			#include "handlers.h"
27			#include "client.h"
28			#include "irc_string.h"
29			#include "sprintf_irc.h"
30			#include "ircd.h"
31			#include "numeric.h"
32			#include "send.h"
33			#include "msg.h"
34			#include "parse.h"
35			#include "modules.h"
36			#include "s_conf.h" /* ConfigFileEntry */
37			#include "s_serv.h" /* uplink/IsCapable */
38
39			static void do_ison(struct Client , struct Client , struct Client , int, char []);
40			static void m_ison(struct Client , struct Client , int, char *[]);
41			static void ms_ison(struct Client , struct Client , int, char *[]);
42
43			struct Message ison_msgtab = {
44			"ISON", 0, 0, 1, 1, MFLG_SLOW, 0,
45			{m_unregistered, m_ison, ms_ison, m_ignore, m_ison, m_ignore}
46			};
47
48			#ifndef STATIC_MODULES
49			void
50			_modinit(void)
51			{
52			mod_add_cmd(&ison_msgtab);
53			}
54
55			void
56			_moddeinit(void)
57			{
58			mod_del_cmd(&ison_msgtab);
59			}
60			const char *_version = "$Revision: 1.39 $";
61			#endif
62
63
64
65			/*
66			* m_ison added by Darren Reed 13/8/91 to act as an efficent user indicator
67			* with respect to cpu/bandwidth used. Implemented for NOTIFY feature in
68			* clients. Designed to reduce number of whois requests. Can process
69			* nicknames in batches as long as the maximum buffer length.
70			*
71			* format:
72			* ISON :nicklist
73			*/
74			static void
75			m_ison(struct Client client_p, struct Client source_p,
76			int parc, char *parv[])
77			{
78			struct Client *up = NULL;
79
80			if (!ServerInfo.hub && uplink && IsCapable(uplink, CAP_LL))
81			up = uplink;
82
83			do_ison(client_p, up, source_p, parc, parv);
84			}
85
86			/*
87			* ms_ison added by David Taylor 04/01/2000 to handle relayed ISON requests.
88			* It's slightly less bandwidth efficient than a normal ISON, but it's
89			* only ever going to get relayed over one link...
90			* Plus, we'll only ever relay each nick once in it's lifetime, if it
91			* exists...
92			* ISON :nicklist
93			*/
94			static void
95			ms_ison(struct Client client_p, struct Client source_p,
96			int parc, char *parv[])
97			{
98			if (ServerInfo.hub && IsCapable(client_p, CAP_LL))
99			do_ison(client_p, NULL, source_p, parc, parv);
100			}
101
102			static void
103			do_ison(struct Client client_p, struct Client up, struct Client *source_p,
104			int parc, char *parv[])
105			{
106			struct Client *target_p = NULL;
107			char *nick;
108			char *p;
109			char current_insert_point, current_insert_point2;
110			char buf[IRCD_BUFSIZE];
111			char buf2[IRCD_BUFSIZE];
112			int len;
113			int i;
114			int done = 0;
115			int relay_to_hub = 0;
116
117			current_insert_point2 = buf2;
118			*buf2 = '\0';
119
120			len = ircsprintf(buf, form_str(RPL_ISON), me.name, parv[0]);
121			current_insert_point = buf + len;
122
123			/* rfc1459 is ambigious about how to handle ISON
124			* this should handle both interpretations.
125			*/
126			for (i = 1; i < parc; i++)
127			{
128			for (nick = strtoken(&p, parv[i], " "); nick;
129			nick = strtoken(&p, NULL, " "))
130			{
131			if ((target_p = find_person(client_p, nick)))
132			{
133			len = strlen(target_p->name);
134
135			if ((current_insert_point + (len + 5)) < (buf + sizeof(buf)))
136			{
137			memcpy(current_insert_point, target_p->name, len);
138			current_insert_point += len;
139			*current_insert_point++ = ' ';
140			}
141			else
142			{
143			done = 1;
144			break;
145			}
146			}
147
148			if (up)
149			{
150			/* Build up a single list, for use if we relay.. */
151			len = strlen(nick);
152
153			if ((current_insert_point2 + len + 5) < (buf2 + sizeof(buf2)))
154			{
155			memcpy(current_insert_point2, nick, len);
156			current_insert_point2 += len;
157			*current_insert_point2++ = ' ';
158			}
159
160			if (target_p == NULL)
161			{
162			/*
163			* XXX Ick. we need to ask our hub if nick is online.
164			* it's probably safest to relay the whole command,
165			* unless we can answer it fully ourselves.
166			* -davidt
167			*/
168			relay_to_hub = 1;
169
170			/* Also cache info about nick */
171			sendto_one(up, ":%s NBURST %s", ID_or_name(&me, up), nick);
172			}
173			}
174			}
175
176			if (done)
177			break;
178			}
179
180			/* current_insert_point--;
181			* Do NOT take out the trailing space, it breaks ircII
182			* --Rodder */
183
184			*current_insert_point = '\0';
185			*current_insert_point2 = '\0';
186
187			if (relay_to_hub)
188			sendto_one(up, ":%s ISON :%s", ID_or_name(source_p, up), buf2);
189			else
190			sendto_one(source_p, "%s", buf);
191			}