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 "modules.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 (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), "*");
  }
}

/*
 * 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[])
{
  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:	91
Committed:	Sat Oct 8 03:46:09 2005 UTC (20 years, 10 months ago) by db
Content type:	text/x-csrc
File size:	5535 byte(s)
Log Message:	- Split out most of the line resv stuff into separate file parse_aline.c should go eventually into the subdir conf - removed double -o in Makefile.in in src, this caused compile to fail for me
#	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			#include "modules.h"
37
38			static void do_links(struct Client , int, char *);
39			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			#ifndef STATIC_MODULES
49	knight	31	const char *_version = "$Revision$";
50	adx	30	static struct Callback *links_cb;
51
52			static void *
53			va_links(va_list args)
54			{
55			struct Client source_p = va_arg(args, struct Client );
56			int parc = va_arg(args, int);
57			char parv = va_arg(args, char );
58
59			do_links(source_p, parc, parv);
60			return NULL;
61			}
62
63			void
64			_modinit(void)
65			{
66			links_cb = register_callback("doing_links", va_links);
67			mod_add_cmd(&links_msgtab);
68			}
69
70			void
71			_moddeinit(void)
72			{
73			mod_del_cmd(&links_msgtab);
74			uninstall_hook(links_cb, va_links);
75			}
76
77			#endif
78
79			static void
80			do_links(struct Client source_p, int parc, char *parv)
81			{
82			if (IsOper(source_p) \|\| !ConfigServerHide.flatten_links)
83			{
84			char *mask = (parc > 2 ? parv[2] : parv[1]);
85			const char me_name, nick, *p;
86			struct Client *target_p;
87			char clean_mask[2 * HOSTLEN + 4];
88			dlink_node *ptr;
89
90			if (mask == NULL)
91			mask = "";
92			if (mask) / only necessary if there is a mask */
93			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			if (*mask && !match(mask, target_p->name))
103			continue;
104
105			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	db	91	else
129			{
130	adx	30	/*
131			* Print our own info so at least it looks like a normal links
132			* then print out the file (which may or may not be empty)
133			*/
134			sendto_one(source_p, form_str(RPL_LINKS),
135			ID_or_name(&me, source_p->from),
136			ID_or_name(source_p, source_p->from),
137			me.name, me.name, 0, me.info);
138			send_message_file(source_p, &ConfigFileEntry.linksfile);
139			sendto_one(source_p, form_str(RPL_ENDOFLINKS),
140			ID_or_name(&me, source_p->from), "*");
141			}
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			if (!ConfigServerHide.flatten_links)
158			{
159			mo_links(client_p, source_p, parc, parv);
160			return;
161			}
162
163			#ifdef STATIC_MODULES
164			do_links(source_p, parc, parv);
165			#else
166			execute_callback(links_cb, source_p, parc, parv);
167			#endif
168			}
169
170			static void
171			mo_links(struct Client client_p, struct Client source_p,
172			int parc, char *parv[])
173			{
174			if (parc > 2)
175			if (!ConfigFileEntry.disable_remote \|\| IsOper(source_p))
176			{
177			if (hunt_server(client_p, source_p, ":%s LINKS %s :%s", 1, parc, parv)
178			!= HUNTED_ISME)
179			return;
180			}
181
182			#ifdef STATIC_MODULES
183			do_links(source_p, parc, parv);
184			#else
185			execute_callback(links_cb, source_p, parc, parv);
186			#endif
187			}
188
189			/*
190			* ms_links - LINKS message handler
191			* parv[0] = sender prefix
192			* parv[1] = servername mask
193			* or
194			* parv[0] = sender prefix
195			* parv[1] = server to query
196			* parv[2] = servername mask
197			*/
198			static void
199			ms_links(struct Client client_p, struct Client source_p,
200			int parc, char *parv[])
201			{
202			if (hunt_server(client_p, source_p, ":%s LINKS %s :%s", 1, parc, parv)
203			!= HUNTED_ISME)
204			return;
205
206			if (IsClient(source_p))
207			m_links(client_p, source_p, parc, parv);
208			}