trunk/modules/m_links.c

/*
 *  ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
 *  m_links.c: Shows what servers are currently connected.
 *
 *  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 "handlers.h"
#include "client.h"
#include "irc_string.h"
#include "ircd.h"
#include "numeric.h"
#include "s_serv.h"
#include "send.h"
#include "s_conf.h"
#include "msg.h"
#include "motd.h"
#include "parse.h"
#include "modules.h"
#include "hook.h"

static void do_links(struct Client *, int, char **);
static void m_links(struct Client*, struct Client*, int, char**);
static void mo_links(struct Client*, struct Client*, int, char**);
static void ms_links(struct Client*, struct Client*, int, char**);

struct Message links_msgtab = {
  "LINKS", 0, 0, 0, 0, MFLG_SLOW, 0,
  {m_unregistered, m_links, ms_links, m_ignore, mo_links, m_ignore}
};

#ifndef STATIC_MODULES
const char *_version = "$Revision$";
static struct Callback *links_cb;

static void *
va_links(va_list args)
{
  struct Client *source_p = va_arg(args, struct Client *);
  int parc = va_arg(args, int);
  char **parv = va_arg(args, char **);

  do_links(source_p, parc, parv);
  return NULL;
}

void
_modinit(void)
{
  links_cb = register_callback("doing_links", va_links);
  mod_add_cmd(&links_msgtab);
}

void
_moddeinit(void)
{
  mod_del_cmd(&links_msgtab);
  uninstall_hook(links_cb, va_links);
}

#endif

static void
do_links(struct Client *source_p, int parc, char **parv)
{
  if (IsOper(source_p) || !ConfigServerHide.flatten_links)
  {
    char *mask = (parc > 2 ? parv[2] : parv[1]);
    const char *me_name, *nick, *p;
    struct Client *target_p;
    char clean_mask[2 * HOSTLEN + 4];
    dlink_node *ptr;

    if (!EmptyString(mask))    /* only necessary if there is a mask */
      mask = collapse(clean_string(clean_mask, (const unsigned char*) mask, 2 * HOSTLEN));

    me_name = ID_or_name(&me, source_p->from);
    nick = ID_or_name(source_p, source_p->from);

    DLINK_FOREACH(ptr, global_serv_list.head)
    {
      target_p = ptr->data;

      if (!EmptyString(mask) && !match(mask, target_p->name))
        continue;

      if (target_p->info[0])
      {
        if ((p = strchr(target_p->info, ']')))
          p += 2; /* skip the nasty [IP] part */
        else
          p = target_p->info;
      } 
      else
        p = "(Unknown Location)";

      /* We just send the reply, as if they are here there's either no SHIDE,
       * or they're an oper..  
       */
      sendto_one(source_p, form_str(RPL_LINKS),
                 me_name, nick,
                 target_p->name, target_p->servptr->name,
                 target_p->hopcount, p);
    }
  
    sendto_one(source_p, form_str(RPL_ENDOFLINKS),
               me_name, nick,
               EmptyString(mask) ? "*" : mask);
  }
  else {
    /*
     * Print our own info so at least it looks like a normal links
     * then print out the file (which may or may not be empty)
     */
    sendto_one(source_p, form_str(RPL_LINKS),
               ID_or_name(&me, source_p->from),
               ID_or_name(source_p, source_p->from),
               me.name, me.name, 0, me.info);
    send_message_file(source_p, &ConfigFileEntry.linksfile);
    sendto_one(source_p, form_str(RPL_ENDOFLINKS),
               ID_or_name(&me, source_p->from),
               ID_or_name(source_p, source_p->from), "*");
  }
}

/*
 * m_links - LINKS message handler
 *      parv[0] = sender prefix
 *      parv[1] = servername mask
 * or
 *      parv[0] = sender prefix
 *      parv[1] = server to query 
 *      parv[2] = servername mask
 */
static void
m_links(struct Client *client_p, struct Client *source_p,
        int parc, char *parv[])
{
  static time_t last_used = 0;

  if ((last_used + ConfigFileEntry.pace_wait) > CurrentTime)
  {
    sendto_one(source_p, form_str(RPL_LOAD2HI),
               me.name, source_p->name);
    return;
  }
  else
    last_used = CurrentTime;

  if (!ConfigServerHide.flatten_links)
  {
    mo_links(client_p, source_p, parc, parv);
    return;
  }

#ifdef STATIC_MODULES
  do_links(source_p, parc, parv);
#else
  execute_callback(links_cb, source_p, parc, parv);
#endif
}

static void
mo_links(struct Client *client_p, struct Client *source_p,
         int parc, char *parv[])
{
  if (parc > 2) 
    if (!ConfigFileEntry.disable_remote || IsOper(source_p))
    {
        if (hunt_server(client_p, source_p, ":%s LINKS %s :%s", 1, parc, parv)
            != HUNTED_ISME)
        return;
    }

#ifdef STATIC_MODULES
  do_links(source_p, parc, parv);
#else
  execute_callback(links_cb, source_p, parc, parv);
#endif
}

/*
 * ms_links - LINKS message handler
 *      parv[0] = sender prefix
 *      parv[1] = servername mask
 * or
 *      parv[0] = sender prefix
 *      parv[1] = server to query 
 *      parv[2] = servername mask
 */
static void
ms_links(struct Client *client_p, struct Client *source_p,
         int parc, char *parv[])
{
  if (hunt_server(client_p, source_p, ":%s LINKS %s :%s", 1, parc, parv)
      != HUNTED_ISME)
    return;

  if (IsClient(source_p))
    m_links(client_p, source_p, parc, parv);
}
Revision:	1028
Committed:	Sun Nov 8 13:03:38 2009 UTC (15 years, 9 months ago) by michael
Content type:	text/x-csrc
Original Path:	*ircd-hybrid/modules/m_links.c*
File size:	5847 byte(s)
Log Message:	- move ircd-hybrid-7.2 to trunk
#	User	Rev	Content
1	adx	30	/*
2			* ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
3			* m_links.c: Shows what servers are currently connected.
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
25			#include "stdinc.h"
26			#include "handlers.h"
27			#include "client.h"
28			#include "irc_string.h"
29			#include "ircd.h"
30			#include "numeric.h"
31			#include "s_serv.h"
32			#include "send.h"
33			#include "s_conf.h"
34			#include "msg.h"
35			#include "motd.h"
36			#include "parse.h"
37			#include "modules.h"
38			#include "hook.h"
39
40			static void do_links(struct Client , int, char *);
41			static void m_links(struct Client, struct Client, int, char**);
42			static void mo_links(struct Client, struct Client, int, char**);
43			static void ms_links(struct Client, struct Client, int, char**);
44
45			struct Message links_msgtab = {
46			"LINKS", 0, 0, 0, 0, MFLG_SLOW, 0,
47			{m_unregistered, m_links, ms_links, m_ignore, mo_links, m_ignore}
48			};
49
50			#ifndef STATIC_MODULES
51	knight	31	const char *_version = "$Revision$";
52	adx	30	static struct Callback *links_cb;
53
54			static void *
55			va_links(va_list args)
56			{
57			struct Client source_p = va_arg(args, struct Client );
58			int parc = va_arg(args, int);
59			char parv = va_arg(args, char );
60
61			do_links(source_p, parc, parv);
62			return NULL;
63			}
64
65			void
66			_modinit(void)
67			{
68			links_cb = register_callback("doing_links", va_links);
69			mod_add_cmd(&links_msgtab);
70			}
71
72			void
73			_moddeinit(void)
74			{
75			mod_del_cmd(&links_msgtab);
76			uninstall_hook(links_cb, va_links);
77			}
78
79			#endif
80
81			static void
82			do_links(struct Client source_p, int parc, char *parv)
83			{
84			if (IsOper(source_p) \|\| !ConfigServerHide.flatten_links)
85			{
86			char *mask = (parc > 2 ? parv[2] : parv[1]);
87			const char me_name, nick, *p;
88			struct Client *target_p;
89			char clean_mask[2 * HOSTLEN + 4];
90			dlink_node *ptr;
91
92	michael	575	if (!EmptyString(mask)) /* only necessary if there is a mask */
93	adx	30	mask = collapse(clean_string(clean_mask, (const unsigned char) mask, 2 HOSTLEN));
94
95			me_name = ID_or_name(&me, source_p->from);
96			nick = ID_or_name(source_p, source_p->from);
97
98			DLINK_FOREACH(ptr, global_serv_list.head)
99			{
100			target_p = ptr->data;
101
102	michael	575	if (!EmptyString(mask) && !match(mask, target_p->name))
103	adx	30	continue;
104	michael	575
105	adx	30	if (target_p->info[0])
106			{
107			if ((p = strchr(target_p->info, ']')))
108			p += 2; /* skip the nasty [IP] part */
109			else
110			p = target_p->info;
111			}
112			else
113			p = "(Unknown Location)";
114
115			/* We just send the reply, as if they are here there's either no SHIDE,
116			* or they're an oper..
117			*/
118			sendto_one(source_p, form_str(RPL_LINKS),
119			me_name, nick,
120			target_p->name, target_p->servptr->name,
121			target_p->hopcount, p);
122			}
123
124			sendto_one(source_p, form_str(RPL_ENDOFLINKS),
125			me_name, nick,
126			EmptyString(mask) ? "*" : mask);
127			}
128			else {
129			/*
130			* Print our own info so at least it looks like a normal links
131			* then print out the file (which may or may not be empty)
132			*/
133			sendto_one(source_p, form_str(RPL_LINKS),
134			ID_or_name(&me, source_p->from),
135			ID_or_name(source_p, source_p->from),
136			me.name, me.name, 0, me.info);
137			send_message_file(source_p, &ConfigFileEntry.linksfile);
138			sendto_one(source_p, form_str(RPL_ENDOFLINKS),
139	adx	103	ID_or_name(&me, source_p->from),
140			ID_or_name(source_p, source_p->from), "*");
141	adx	30	}
142			}
143
144			/*
145			* m_links - LINKS message handler
146			* parv[0] = sender prefix
147			* parv[1] = servername mask
148			* or
149			* parv[0] = sender prefix
150			* parv[1] = server to query
151			* parv[2] = servername mask
152			*/
153			static void
154			m_links(struct Client client_p, struct Client source_p,
155			int parc, char *parv[])
156			{
157	adx	269	static time_t last_used = 0;
158
159			if ((last_used + ConfigFileEntry.pace_wait) > CurrentTime)
160			{
161			sendto_one(source_p, form_str(RPL_LOAD2HI),
162			me.name, source_p->name);
163			return;
164			}
165			else
166			last_used = CurrentTime;
167
168	adx	30	if (!ConfigServerHide.flatten_links)
169			{
170			mo_links(client_p, source_p, parc, parv);
171			return;
172			}
173
174			#ifdef STATIC_MODULES
175			do_links(source_p, parc, parv);
176			#else
177			execute_callback(links_cb, source_p, parc, parv);
178			#endif
179			}
180
181			static void
182			mo_links(struct Client client_p, struct Client source_p,
183			int parc, char *parv[])
184			{
185			if (parc > 2)
186			if (!ConfigFileEntry.disable_remote \|\| IsOper(source_p))
187			{
188			if (hunt_server(client_p, source_p, ":%s LINKS %s :%s", 1, parc, parv)
189			!= HUNTED_ISME)
190			return;
191			}
192
193			#ifdef STATIC_MODULES
194			do_links(source_p, parc, parv);
195			#else
196			execute_callback(links_cb, source_p, parc, parv);
197			#endif
198			}
199
200			/*
201			* ms_links - LINKS message handler
202			* parv[0] = sender prefix
203			* parv[1] = servername mask
204			* or
205			* parv[0] = sender prefix
206			* parv[1] = server to query
207			* parv[2] = servername mask
208			*/
209			static void
210			ms_links(struct Client client_p, struct Client source_p,
211			int parc, char *parv[])
212			{
213			if (hunt_server(client_p, source_p, ":%s LINKS %s :%s", 1, parc, parv)
214			!= HUNTED_ISME)
215			return;
216
217			if (IsClient(source_p))
218			m_links(client_p, source_p, parc, parv);
219			}