ircd-hybrid/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 "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 "conf/modules.h"

static void *do_links(va_list);
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}
};

static struct Callback *links_cb;

INIT_MODULE(m_links, "$Revision$")
{
  links_cb = register_callback("doing_links", do_links);
  mod_add_cmd(&links_msgtab);
}

CLEANUP_MODULE
{
  mod_del_cmd(&links_msgtab);
  uninstall_hook(links_cb, do_links);
}

static void *
do_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 **);

  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 (mask == NULL)
      mask = "";
    if (*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 (*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), "*");
  }

  return NULL;
}

/*
 * 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;
  }

  execute_callback(links_cb, source_p, parc, parv);
}

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;
    }

  execute_callback(links_cb, source_p, parc, parv);
}

/*
 * 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:	470
Committed:	Fri Feb 17 05:07:43 2006 UTC (20 years, 5 months ago) by db
Content type:	text/x-csrc
File size:	5520 byte(s)
Log Message:	- fix compile errors with moved modules.h - fix a few missing includes, msg.h and parse.h
#	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 "ircd.h"
29			#include "numeric.h"
30			#include "s_serv.h"
31			#include "send.h"
32			#include "s_conf.h"
33			#include "msg.h"
34			#include "motd.h"
35			#include "parse.h"
36	db	470	#include "conf/modules.h"
37	adx	30
38	adx	444	static void *do_links(va_list);
39	adx	30	static void m_links(struct Client, struct Client, int, char**);
40			static void mo_links(struct Client, struct Client, int, char**);
41			static void ms_links(struct Client, struct Client, int, char**);
42
43			struct Message links_msgtab = {
44			"LINKS", 0, 0, 0, 0, MFLG_SLOW, 0,
45			{m_unregistered, m_links, ms_links, m_ignore, mo_links, m_ignore}
46			};
47
48			static struct Callback *links_cb;
49
50	adx	442	INIT_MODULE(m_links, "$Revision$")
51	adx	30	{
52	adx	444	links_cb = register_callback("doing_links", do_links);
53	adx	30	mod_add_cmd(&links_msgtab);
54			}
55
56	adx	442	CLEANUP_MODULE
57	adx	30	{
58			mod_del_cmd(&links_msgtab);
59	adx	444	uninstall_hook(links_cb, do_links);
60	adx	30	}
61
62	adx	444	static void *
63			do_links(va_list args)
64	adx	30	{
65	adx	444	struct Client source_p = va_arg(args, struct Client );
66			int parc = va_arg(args, int);
67			char parv = va_arg(args, char );
68
69	adx	30	if (IsOper(source_p) \|\| !ConfigServerHide.flatten_links)
70			{
71			char *mask = (parc > 2 ? parv[2] : parv[1]);
72			const char me_name, nick, *p;
73			struct Client *target_p;
74			char clean_mask[2 * HOSTLEN + 4];
75			dlink_node *ptr;
76
77			if (mask == NULL)
78			mask = "";
79			if (mask) / only necessary if there is a mask */
80			mask = collapse(clean_string(clean_mask, (const unsigned char) mask, 2 HOSTLEN));
81
82			me_name = ID_or_name(&me, source_p->from);
83			nick = ID_or_name(source_p, source_p->from);
84
85			DLINK_FOREACH(ptr, global_serv_list.head)
86			{
87			target_p = ptr->data;
88
89			if (*mask && !match(mask, target_p->name))
90			continue;
91
92			if (target_p->info[0])
93			{
94			if ((p = strchr(target_p->info, ']')))
95			p += 2; /* skip the nasty [IP] part */
96			else
97			p = target_p->info;
98			}
99			else
100			p = "(Unknown Location)";
101
102			/* We just send the reply, as if they are here there's either no SHIDE,
103			* or they're an oper..
104			*/
105			sendto_one(source_p, form_str(RPL_LINKS),
106			me_name, nick,
107	adx	270	target_p->name, target_p->servptr->name,
108	adx	30	target_p->hopcount, p);
109			}
110
111			sendto_one(source_p, form_str(RPL_ENDOFLINKS),
112			me_name, nick,
113			EmptyString(mask) ? "*" : mask);
114			}
115	db	91	else
116			{
117	adx	30	/*
118			* Print our own info so at least it looks like a normal links
119			* then print out the file (which may or may not be empty)
120			*/
121			sendto_one(source_p, form_str(RPL_LINKS),
122			ID_or_name(&me, source_p->from),
123			ID_or_name(source_p, source_p->from),
124			me.name, me.name, 0, me.info);
125			send_message_file(source_p, &ConfigFileEntry.linksfile);
126			sendto_one(source_p, form_str(RPL_ENDOFLINKS),
127	adx	104	ID_or_name(&me, source_p->from),
128			ID_or_name(source_p, source_p->from), "*");
129	adx	30	}
130	adx	444
131			return NULL;
132	adx	30	}
133
134			/*
135			* m_links - LINKS message handler
136			* parv[0] = sender prefix
137			* parv[1] = servername mask
138			* or
139			* parv[0] = sender prefix
140			* parv[1] = server to query
141			* parv[2] = servername mask
142			*/
143			static void
144			m_links(struct Client client_p, struct Client source_p,
145			int parc, char *parv[])
146			{
147	adx	270	static time_t last_used = 0;
148
149			if ((last_used + ConfigFileEntry.pace_wait) > CurrentTime)
150			{
151			sendto_one(source_p, form_str(RPL_LOAD2HI),
152			me.name, source_p->name);
153			return;
154			}
155			else
156			last_used = CurrentTime;
157
158	adx	30	if (!ConfigServerHide.flatten_links)
159			{
160			mo_links(client_p, source_p, parc, parv);
161			return;
162			}
163
164			execute_callback(links_cb, source_p, parc, parv);
165			}
166
167			static void
168			mo_links(struct Client client_p, struct Client source_p,
169			int parc, char *parv[])
170			{
171			if (parc > 2)
172			if (!ConfigFileEntry.disable_remote \|\| IsOper(source_p))
173			{
174			if (hunt_server(client_p, source_p, ":%s LINKS %s :%s", 1, parc, parv)
175			!= HUNTED_ISME)
176			return;
177			}
178
179			execute_callback(links_cb, source_p, parc, parv);
180			}
181
182			/*
183			* ms_links - LINKS message handler
184			* parv[0] = sender prefix
185			* parv[1] = servername mask
186			* or
187			* parv[0] = sender prefix
188			* parv[1] = server to query
189			* parv[2] = servername mask
190			*/
191			static void
192			ms_links(struct Client client_p, struct Client source_p,
193			int parc, char *parv[])
194			{
195			if (hunt_server(client_p, source_p, ":%s LINKS %s :%s", 1, parc, parv)
196			!= HUNTED_ISME)
197			return;
198
199			if (IsClient(source_p))
200			m_links(client_p, source_p, parc, parv);
201			}