trunk/modules/m_links.c

/*
 *  ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
 *
 *  Copyright (c) 1997-2014 ircd-hybrid development team
 *
 *  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
 */

/*! \file m_links.c
 * \brief Includes required functions for processing the LINKS command.
 * \version $Id$
 */

#include "stdinc.h"
#include "client.h"
#include "irc_string.h"
#include "ircd.h"
#include "numeric.h"
#include "s_serv.h"
#include "send.h"
#include "conf.h"
#include "motd.h"
#include "parse.h"
#include "modules.h"


/*! \brief Shows a list of linked servers and notifies irc-operators
 *         about the LINKS request
 *
 * \param source_p Pointer to client to report to
 */
static void
do_links(struct Client *source_p, int parc, char *parv[])
{
  dlink_node *ptr = NULL;

  sendto_realops_flags(UMODE_SPY, L_ALL, SEND_NOTICE,
                       "LINKS requested by %s (%s@%s) [%s]",
                       source_p->name,
                       source_p->username, source_p->host,
                       source_p->servptr->name);

  if (HasUMode(source_p, UMODE_OPER) || !ConfigServerHide.flatten_links)
  {
    const char *mask = (parc > 2 ? parv[2] : parv[1]);

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

      /* skip hidden servers */
      if (IsHidden(target_p))
        if (!HasUMode(source_p, UMODE_OPER))
          continue;

      if (HasFlag(target_p, FLAGS_SERVICE) && ConfigServerHide.hide_services)
        if (!HasUMode(source_p, UMODE_OPER))
          continue;

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

      /*
       * We just send the reply, as if they are here there's either no SHIDE,
       * or they're an oper..
       */
      sendto_one_numeric(source_p, &me, RPL_LINKS,
                         target_p->name, target_p->servptr->name,
                         target_p->hopcount, target_p->info);
    }

    sendto_one_numeric(source_p, &me, RPL_ENDOFLINKS,
                       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_numeric(source_p, &me, RPL_LINKS,
               me.name, me.name, 0, me.info);

    DLINK_FOREACH(ptr, flatten_links.head)
      sendto_one(source_p, ":%s %d %s %s",
                 ID_or_name(&me, source_p), RPL_LINKS,
                 ID_or_name(source_p, source_p),
                 ptr->data);
    sendto_one_numeric(source_p, &me, RPL_ENDOFLINKS, "*");
  }
}

static int
mo_links(struct Client *source_p, int parc, char *parv[])
{
  if (parc > 2)
    if (!ConfigServerHide.disable_remote_commands || HasUMode(source_p, UMODE_OPER))
      if (hunt_server(source_p, ":%s LINKS %s :%s", 1,
                      parc, parv) != HUNTED_ISME)
        return 0;

  do_links(source_p, parc, parv);
  return 0;
}

/*! \brief LINKS command handler
 *
 * \param source_p Pointer to allocated Client struct from which the message
 *                 originally comes from.  This can be a local or remote client.
 * \param parc     Integer holding the number of supplied arguments.
 * \param parv     Argument vector where parv[0] .. parv[parc-1] are non-NULL
 *                 pointers.
 * \note Valid arguments for this command are:
 *      - parv[0] = command
 *      - parv[1] = servername mask
 * or
 *      - parv[0] = command
 *      - parv[1] = server to query
 *      - parv[2] = servername mask
 */
static int
m_links(struct Client *source_p, int parc, char *parv[])
{
  static time_t last_used = 0;

  if ((last_used + ConfigFileEntry.pace_wait) > CurrentTime)
  {
    sendto_one_numeric(source_p, &me, RPL_LOAD2HI);
    return 0;
  }

  last_used = CurrentTime;

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

  do_links(source_p, parc, parv);
  return 0;
}

/*! \brief LINKS command handler
 *
 * \param source_p Pointer to allocated Client struct from which the message
 *                 originally comes from.  This can be a local or remote client.
 * \param parc     Integer holding the number of supplied arguments.
 * \param parv     Argument vector where parv[0] .. parv[parc-1] are non-NULL
 *                 pointers.
 * \note Valid arguments for this command are:
 *      - parv[0] = command
 *      - parv[1] = servername mask
 * or
 *      - parv[0] = command
 *      - parv[1] = server to query
 *      - parv[2] = servername mask
 */
static int
ms_links(struct Client *source_p, int parc, char *parv[])
{
  if (hunt_server(source_p, ":%s LINKS %s :%s", 1,
                  parc, parv) != HUNTED_ISME)
    return 0;

  return m_links(source_p, parc, parv);
}

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

static void
module_init(void)
{
  mod_add_cmd(&links_msgtab);
}

static void
module_exit(void)
{
  mod_del_cmd(&links_msgtab);
}

struct module module_entry =
{
  .node    = { NULL, NULL, NULL },
  .name    = NULL,
  .version = "$Revision$",
  .handle  = NULL,
  .modinit = module_init,
  .modexit = module_exit,
  .flags   = 0
};
Revision:	3344
Committed:	Sun Apr 20 10:47:04 2014 UTC (11 years, 4 months ago) by michael
Content type:	text/x-csrc
File size:	5914 byte(s)
Log Message:	- Doxygen
#	Content
1	/*
2	* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
3	*
4	* Copyright (c) 1997-2014 ircd-hybrid development team
5	*
6	* This program is free software; you can redistribute it and/or modify
7	* it under the terms of the GNU General Public License as published by
8	* the Free Software Foundation; either version 2 of the License, or
9	* (at your option) any later version.
10	*
11	* This program is distributed in the hope that it will be useful,
12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14	* GNU General Public License for more details.
15	*
16	* You should have received a copy of the GNU General Public License
17	* along with this program; if not, write to the Free Software
18	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
19	* USA
20	*/
21
22	/*! \file m_links.c
23	* \brief Includes required functions for processing the LINKS command.
24	* \version $Id$
25	*/
26
27	#include "stdinc.h"
28	#include "client.h"
29	#include "irc_string.h"
30	#include "ircd.h"
31	#include "numeric.h"
32	#include "s_serv.h"
33	#include "send.h"
34	#include "conf.h"
35	#include "motd.h"
36	#include "parse.h"
37	#include "modules.h"
38
39
40	/*! \brief Shows a list of linked servers and notifies irc-operators
41	* about the LINKS request
42	*
43	* \param source_p Pointer to client to report to
44	*/
45	static void
46	do_links(struct Client source_p, int parc, char parv[])
47	{
48	dlink_node *ptr = NULL;
49
50	sendto_realops_flags(UMODE_SPY, L_ALL, SEND_NOTICE,
51	"LINKS requested by %s (%s@%s) [%s]",
52	source_p->name,
53	source_p->username, source_p->host,
54	source_p->servptr->name);
55
56	if (HasUMode(source_p, UMODE_OPER) \|\| !ConfigServerHide.flatten_links)
57	{
58	const char *mask = (parc > 2 ? parv[2] : parv[1]);
59
60	DLINK_FOREACH(ptr, global_serv_list.head)
61	{
62	struct Client *target_p = ptr->data;
63
64	/* skip hidden servers */
65	if (IsHidden(target_p))
66	if (!HasUMode(source_p, UMODE_OPER))
67	continue;
68
69	if (HasFlag(target_p, FLAGS_SERVICE) && ConfigServerHide.hide_services)
70	if (!HasUMode(source_p, UMODE_OPER))
71	continue;
72
73	if (!EmptyString(mask) && match(mask, target_p->name))
74	continue;
75
76	/*
77	* We just send the reply, as if they are here there's either no SHIDE,
78	* or they're an oper..
79	*/
80	sendto_one_numeric(source_p, &me, RPL_LINKS,
81	target_p->name, target_p->servptr->name,
82	target_p->hopcount, target_p->info);
83	}
84
85	sendto_one_numeric(source_p, &me, RPL_ENDOFLINKS,
86	EmptyString(mask) ? "*" : mask);
87	}
88	else
89	{
90	/*
91	* Print our own info so at least it looks like a normal links
92	* then print out the file (which may or may not be empty)
93	*/
94	sendto_one_numeric(source_p, &me, RPL_LINKS,
95	me.name, me.name, 0, me.info);
96
97	DLINK_FOREACH(ptr, flatten_links.head)
98	sendto_one(source_p, ":%s %d %s %s",
99	ID_or_name(&me, source_p), RPL_LINKS,
100	ID_or_name(source_p, source_p),
101	ptr->data);
102	sendto_one_numeric(source_p, &me, RPL_ENDOFLINKS, "*");
103	}
104	}
105
106	static int
107	mo_links(struct Client source_p, int parc, char parv[])
108	{
109	if (parc > 2)
110	if (!ConfigServerHide.disable_remote_commands \|\| HasUMode(source_p, UMODE_OPER))
111	if (hunt_server(source_p, ":%s LINKS %s :%s", 1,
112	parc, parv) != HUNTED_ISME)
113	return 0;
114
115	do_links(source_p, parc, parv);
116	return 0;
117	}
118
119	/*! \brief LINKS command handler
120	*
121	* \param source_p Pointer to allocated Client struct from which the message
122	* originally comes from. This can be a local or remote client.
123	* \param parc Integer holding the number of supplied arguments.
124	* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL
125	* pointers.
126	* \note Valid arguments for this command are:
127	* - parv[0] = command
128	* - parv[1] = servername mask
129	* or
130	* - parv[0] = command
131	* - parv[1] = server to query
132	* - parv[2] = servername mask
133	*/
134	static int
135	m_links(struct Client source_p, int parc, char parv[])
136	{
137	static time_t last_used = 0;
138
139	if ((last_used + ConfigFileEntry.pace_wait) > CurrentTime)
140	{
141	sendto_one_numeric(source_p, &me, RPL_LOAD2HI);
142	return 0;
143	}
144
145	last_used = CurrentTime;
146
147	if (!ConfigServerHide.flatten_links)
148	return mo_links(source_p, parc, parv);
149
150	do_links(source_p, parc, parv);
151	return 0;
152	}
153
154	/*! \brief LINKS command handler
155	*
156	* \param source_p Pointer to allocated Client struct from which the message
157	* originally comes from. This can be a local or remote client.
158	* \param parc Integer holding the number of supplied arguments.
159	* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL
160	* pointers.
161	* \note Valid arguments for this command are:
162	* - parv[0] = command
163	* - parv[1] = servername mask
164	* or
165	* - parv[0] = command
166	* - parv[1] = server to query
167	* - parv[2] = servername mask
168	*/
169	static int
170	ms_links(struct Client source_p, int parc, char parv[])
171	{
172	if (hunt_server(source_p, ":%s LINKS %s :%s", 1,
173	parc, parv) != HUNTED_ISME)
174	return 0;
175
176	return m_links(source_p, parc, parv);
177	}
178
179	static struct Message links_msgtab =
180	{
181	"LINKS", 0, 0, 0, MAXPARA, MFLG_SLOW, 0,
182	{ m_unregistered, m_links, ms_links, m_ignore, mo_links, m_ignore }
183	};
184
185	static void
186	module_init(void)
187	{
188	mod_add_cmd(&links_msgtab);
189	}
190
191	static void
192	module_exit(void)
193	{
194	mod_del_cmd(&links_msgtab);
195	}
196
197	struct module module_entry =
198	{
199	.node = { NULL, NULL, NULL },
200	.name = NULL,
201	.version = "$Revision$",
202	.handle = NULL,
203	.modinit = module_init,
204	.modexit = module_exit,
205	.flags = 0
206	};