8.2.x/modules/m_map.c

/*
 *  ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
 *
 *  Copyright (c) 2001-2018 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
 *  USA
 */

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

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


static void dump_map(struct Client *client,
                     struct Client *server,
                     unsigned int prompt_length)
{
  dlink_node *node;
  static char prompt[64];
  char buf[IRCD_BUFSIZE];
  char *p = prompt + prompt_length;
  unsigned int cnt = 0;

  *p = '\0';

  if (prompt_length > 60)
    sendto_one_numeric(client, &me, RPL_MAPMORE, prompt, server->name);
  else
  {
    unsigned int bufpos = snprintf(buf, sizeof(buf), "%s", server->name);

    if (HasUMode(client, UMODE_OPER))
      bufpos += snprintf(buf + bufpos, sizeof(buf) - bufpos, "[%s]", server->id);

    buf[bufpos++] = ' ';

    for (int dashes = 50 - bufpos - prompt_length; dashes > 0; --dashes)
      buf[bufpos++] = '-';

    buf[bufpos++] = ' ';
    buf[bufpos++] = '|';

    bufpos += snprintf(buf + bufpos, sizeof(buf) - bufpos, " Users: %5d (%1.2f%%)",
                       dlink_list_length(&server->serv->client_list), 100 *
                       (float)dlink_list_length(&server->serv->client_list) /
                       (float)dlink_list_length(&global_client_list));
    sendto_one_numeric(client, &me, RPL_MAP, prompt, buf);
  }

  if (prompt_length > 0)
  {
    *(p - 1) = ' ';

    if (*(p - 2) == '`')
      *(p - 2) = ' ';
  }

  if (prompt_length > 60)
    return;
  strcpy(p, "|-");

  DLINK_FOREACH(node, server->serv->server_list.head)
  {
    struct Client *target_p = node->data;

    if (IsHidden(target_p) && !HasUMode(client, UMODE_OPER))
      continue;

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

    ++cnt;
  }

  DLINK_FOREACH(node, server->serv->server_list.head)
  {
    struct Client *target_p = node->data;

    if (IsHidden(target_p) && !HasUMode(client, UMODE_OPER))
      continue;

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

    if (--cnt == 0)
      *p = '`';
    dump_map(client, target_p, prompt_length + 2);
  }

  if (prompt_length > 0)
    *(p - 1) = '-';
}

/*! \brief Sends a network topology map and notifies irc-operators
 *         about the MAP request
 *
 * \param source_p Pointer to client to report to
 */
static void
do_map(struct Client *source_p)
{
  sendto_realops_flags(UMODE_SPY, L_ALL, SEND_NOTICE,
                       "MAP requested by %s (%s@%s) [%s]",
                       source_p->name, source_p->username,
                       source_p->host, source_p->servptr->name);
  dump_map(source_p, &me, 0);
}

/*! \brief MAP 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
 */
static int
m_map(struct Client *source_p, int parc, char *parv[])
{
  static uintmax_t last_used = 0;

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

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

  last_used = CurrentTime;

  do_map(source_p);
  sendto_one_numeric(source_p, &me, RPL_MAPEND);
  return 0;
}

/*! \brief MAP 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
 */
static int
mo_map(struct Client *source_p, int parc, char *parv[])
{
  do_map(source_p);
  sendto_one_numeric(source_p, &me, RPL_MAPEND);
  return 0;
}

static struct Message map_msgtab =
{
  .cmd = "MAP",
  .args_max = MAXPARA,
  .handlers[UNREGISTERED_HANDLER] = m_unregistered,
  .handlers[CLIENT_HANDLER] = m_map,
  .handlers[SERVER_HANDLER] = m_ignore,
  .handlers[ENCAP_HANDLER] = m_ignore,
  .handlers[OPER_HANDLER] = mo_map
};

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

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

struct module module_entry =
{
  .version = "$Revision$",
  .modinit = module_init,
  .modexit = module_exit,
};
Revision:	8280
Committed:	Tue Feb 20 19:30:33 2018 UTC (8 years, 5 months ago) by michael
Content type:	text/x-csrc
File size:	5715 byte(s)
Log Message:	- Update copyright years
#	Content
1	/*
2	* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
3	*
4	* Copyright (c) 2001-2018 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
19	* USA
20	*/
21
22	/*! \file m_map.c
23	* \brief Includes required functions for processing the MAP command.
24	* \version $Id$
25	*/
26
27	#include "stdinc.h"
28	#include "client.h"
29	#include "modules.h"
30	#include "numeric.h"
31	#include "send.h"
32	#include "conf.h"
33	#include "ircd.h"
34	#include "parse.h"
35
36
37	static void dump_map(struct Client *client,
38	struct Client *server,
39	unsigned int prompt_length)
40	{
41	dlink_node *node;
42	static char prompt[64];
43	char buf[IRCD_BUFSIZE];
44	char *p = prompt + prompt_length;
45	unsigned int cnt = 0;
46
47	*p = '\0';
48
49	if (prompt_length > 60)
50	sendto_one_numeric(client, &me, RPL_MAPMORE, prompt, server->name);
51	else
52	{
53	unsigned int bufpos = snprintf(buf, sizeof(buf), "%s", server->name);
54
55	if (HasUMode(client, UMODE_OPER))
56	bufpos += snprintf(buf + bufpos, sizeof(buf) - bufpos, "[%s]", server->id);
57
58	buf[bufpos++] = ' ';
59
60	for (int dashes = 50 - bufpos - prompt_length; dashes > 0; --dashes)
61	buf[bufpos++] = '-';
62
63	buf[bufpos++] = ' ';
64	buf[bufpos++] = '\|';
65
66	bufpos += snprintf(buf + bufpos, sizeof(buf) - bufpos, " Users: %5d (%1.2f%%)",
67	dlink_list_length(&server->serv->client_list), 100 *
68	(float)dlink_list_length(&server->serv->client_list) /
69	(float)dlink_list_length(&global_client_list));
70	sendto_one_numeric(client, &me, RPL_MAP, prompt, buf);
71	}
72
73	if (prompt_length > 0)
74	{
75	*(p - 1) = ' ';
76
77	if (*(p - 2) == '`')
78	*(p - 2) = ' ';
79	}
80
81	if (prompt_length > 60)
82	return;
83	strcpy(p, "\|-");
84
85	DLINK_FOREACH(node, server->serv->server_list.head)
86	{
87	struct Client *target_p = node->data;
88
89	if (IsHidden(target_p) && !HasUMode(client, UMODE_OPER))
90	continue;
91
92	if (HasFlag(target_p, FLAGS_SERVICE) && ConfigServerHide.hide_services)
93	if (!HasUMode(client, UMODE_OPER))
94	continue;
95
96	++cnt;
97	}
98
99	DLINK_FOREACH(node, server->serv->server_list.head)
100	{
101	struct Client *target_p = node->data;
102
103	if (IsHidden(target_p) && !HasUMode(client, UMODE_OPER))
104	continue;
105
106	if (HasFlag(target_p, FLAGS_SERVICE) && ConfigServerHide.hide_services)
107	if (!HasUMode(client, UMODE_OPER))
108	continue;
109
110	if (--cnt == 0)
111	*p = '`';
112	dump_map(client, target_p, prompt_length + 2);
113	}
114
115	if (prompt_length > 0)
116	*(p - 1) = '-';
117	}
118
119	/*! \brief Sends a network topology map and notifies irc-operators
120	* about the MAP request
121	*
122	* \param source_p Pointer to client to report to
123	*/
124	static void
125	do_map(struct Client *source_p)
126	{
127	sendto_realops_flags(UMODE_SPY, L_ALL, SEND_NOTICE,
128	"MAP requested by %s (%s@%s) [%s]",
129	source_p->name, source_p->username,
130	source_p->host, source_p->servptr->name);
131	dump_map(source_p, &me, 0);
132	}
133
134	/*! \brief MAP command handler
135	*
136	* \param source_p Pointer to allocated Client struct from which the message
137	* originally comes from. This can be a local or remote client.
138	* \param parc Integer holding the number of supplied arguments.
139	* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL
140	* pointers.
141	* \note Valid arguments for this command are:
142	* - parv[0] = command
143	*/
144	static int
145	m_map(struct Client source_p, int parc, char parv[])
146	{
147	static uintmax_t last_used = 0;
148
149	if (ConfigServerHide.flatten_links)
150	return m_not_oper(source_p, parc, parv);
151
152	if ((last_used + ConfigGeneral.pace_wait) > CurrentTime)
153	{
154	sendto_one_numeric(source_p, &me, RPL_LOAD2HI, "MAP");
155	return 0;
156	}
157
158	last_used = CurrentTime;
159
160	do_map(source_p);
161	sendto_one_numeric(source_p, &me, RPL_MAPEND);
162	return 0;
163	}
164
165	/*! \brief MAP command handler
166	*
167	* \param source_p Pointer to allocated Client struct from which the message
168	* originally comes from. This can be a local or remote client.
169	* \param parc Integer holding the number of supplied arguments.
170	* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL
171	* pointers.
172	* \note Valid arguments for this command are:
173	* - parv[0] = command
174	*/
175	static int
176	mo_map(struct Client source_p, int parc, char parv[])
177	{
178	do_map(source_p);
179	sendto_one_numeric(source_p, &me, RPL_MAPEND);
180	return 0;
181	}
182
183	static struct Message map_msgtab =
184	{
185	.cmd = "MAP",
186	.args_max = MAXPARA,
187	.handlers[UNREGISTERED_HANDLER] = m_unregistered,
188	.handlers[CLIENT_HANDLER] = m_map,
189	.handlers[SERVER_HANDLER] = m_ignore,
190	.handlers[ENCAP_HANDLER] = m_ignore,
191	.handlers[OPER_HANDLER] = mo_map
192	};
193
194	static void
195	module_init(void)
196	{
197	mod_add_cmd(&map_msgtab);
198	}
199
200	static void
201	module_exit(void)
202	{
203	mod_del_cmd(&map_msgtab);
204	}
205
206	struct module module_entry =
207	{
208	.version = "$Revision$",
209	.modinit = module_init,
210	.modexit = module_exit,
211	};