trunk/modules/m_map.c

/*
 *  ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
 *
 *  Copyright (c) 2001-2016 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 = NULL;
  struct Client *target_p = NULL;
  static char prompt[64];
  char buf[IRCD_BUFSIZE];
  char *p = prompt + prompt_length;
  unsigned int cnt = 0;
  unsigned int bufpos = 0;

  *p = '\0';

  if (prompt_length > 60)
    sendto_one_numeric(client, &me, RPL_MAPMORE, prompt, server->name);
  else
  {
    int dashes;

    bufpos += snprintf(buf + bufpos, sizeof(buf) - bufpos, "%s", server->name);

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

    buf[bufpos++] = ' ';
    dashes = 50 - bufpos - prompt_length;
    for (; 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)Count.total);
    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)
  {
    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)
  {
    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:	7330
Committed:	Fri Feb 19 17:50:13 2016 UTC (9 years, 6 months ago) by michael
Content type:	text/x-csrc
File size:	5749 byte(s)
Log Message:	- Now that we got time_t to work nicely on openbsd with snprintf's conversion specifiers, we ran into a similiar issue on Raspbian/ARMv7's time_t which is of signed 32 bit and doesn't cope at all with %j. Instead of doing tricks, get rid of time_t everywhere and forever and use uintmax_t instead which has at least a 'standardized' conversion specifier associated with it.
#	Content
1	/*
2	* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
3	*
4	* Copyright (c) 2001-2016 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 = NULL;
42	struct Client *target_p = NULL;
43	static char prompt[64];
44	char buf[IRCD_BUFSIZE];
45	char *p = prompt + prompt_length;
46	unsigned int cnt = 0;
47	unsigned int bufpos = 0;
48
49	*p = '\0';
50
51	if (prompt_length > 60)
52	sendto_one_numeric(client, &me, RPL_MAPMORE, prompt, server->name);
53	else
54	{
55	int dashes;
56
57	bufpos += snprintf(buf + bufpos, sizeof(buf) - bufpos, "%s", server->name);
58
59	if (HasUMode(client, UMODE_OPER))
60	bufpos += snprintf(buf + bufpos, sizeof(buf) - bufpos, "[%s]", server->id);
61
62	buf[bufpos++] = ' ';
63	dashes = 50 - bufpos - prompt_length;
64	for (; dashes > 0; --dashes)
65	buf[bufpos++] = '-';
66	buf[bufpos++] = ' ';
67	buf[bufpos++] = '\|';
68
69	bufpos += snprintf(buf + bufpos, sizeof(buf) - bufpos, " Users: %5d (%1.2f%%)",
70	dlink_list_length(&server->serv->client_list), 100 *
71	(float)dlink_list_length(&server->serv->client_list) /
72	(float)Count.total);
73	sendto_one_numeric(client, &me, RPL_MAP, prompt, buf);
74	}
75
76	if (prompt_length > 0)
77	{
78	*(p - 1) = ' ';
79
80	if (*(p - 2) == '`')
81	*(p - 2) = ' ';
82	}
83
84	if (prompt_length > 60)
85	return;
86	strcpy(p, "\|-");
87
88	DLINK_FOREACH(node, server->serv->server_list.head)
89	{
90	target_p = node->data;
91
92	if (IsHidden(target_p) && !HasUMode(client, UMODE_OPER))
93	continue;
94
95	if (HasFlag(target_p, FLAGS_SERVICE) && ConfigServerHide.hide_services)
96	if (!HasUMode(client, UMODE_OPER))
97	continue;
98
99	++cnt;
100	}
101
102	DLINK_FOREACH(node, server->serv->server_list.head)
103	{
104	target_p = node->data;
105
106	if (IsHidden(target_p) && !HasUMode(client, UMODE_OPER))
107	continue;
108
109	if (HasFlag(target_p, FLAGS_SERVICE) && ConfigServerHide.hide_services)
110	if (!HasUMode(client, UMODE_OPER))
111	continue;
112
113	if (--cnt == 0)
114	*p = '`';
115	dump_map(client, target_p, prompt_length + 2);
116	}
117
118	if (prompt_length > 0)
119	*(p - 1) = '-';
120	}
121
122	/*! \brief Sends a network topology map and notifies irc-operators
123	* about the MAP request
124	*
125	* \param source_p Pointer to client to report to
126	*/
127	static void
128	do_map(struct Client *source_p)
129	{
130	sendto_realops_flags(UMODE_SPY, L_ALL, SEND_NOTICE,
131	"MAP requested by %s (%s@%s) [%s]",
132	source_p->name, source_p->username,
133	source_p->host, source_p->servptr->name);
134	dump_map(source_p, &me, 0);
135	}
136
137	/*! \brief MAP command handler
138	*
139	* \param source_p Pointer to allocated Client struct from which the message
140	* originally comes from. This can be a local or remote client.
141	* \param parc Integer holding the number of supplied arguments.
142	* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL
143	* pointers.
144	* \note Valid arguments for this command are:
145	* - parv[0] = command
146	*/
147	static int
148	m_map(struct Client source_p, int parc, char parv[])
149	{
150	static uintmax_t last_used = 0;
151
152	if (ConfigServerHide.flatten_links)
153	return m_not_oper(source_p, parc, parv);
154
155	if ((last_used + ConfigGeneral.pace_wait) > CurrentTime)
156	{
157	sendto_one_numeric(source_p, &me, RPL_LOAD2HI, "MAP");
158	return 0;
159	}
160
161	last_used = CurrentTime;
162
163	do_map(source_p);
164	sendto_one_numeric(source_p, &me, RPL_MAPEND);
165	return 0;
166	}
167
168	/*! \brief MAP command handler
169	*
170	* \param source_p Pointer to allocated Client struct from which the message
171	* originally comes from. This can be a local or remote client.
172	* \param parc Integer holding the number of supplied arguments.
173	* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL
174	* pointers.
175	* \note Valid arguments for this command are:
176	* - parv[0] = command
177	*/
178	static int
179	mo_map(struct Client source_p, int parc, char parv[])
180	{
181	do_map(source_p);
182	sendto_one_numeric(source_p, &me, RPL_MAPEND);
183	return 0;
184	}
185
186	static struct Message map_msgtab =
187	{
188	.cmd = "MAP",
189	.args_max = MAXPARA,
190	.handlers[UNREGISTERED_HANDLER] = m_unregistered,
191	.handlers[CLIENT_HANDLER] = m_map,
192	.handlers[SERVER_HANDLER] = m_ignore,
193	.handlers[ENCAP_HANDLER] = m_ignore,
194	.handlers[OPER_HANDLER] = mo_map
195	};
196
197	static void
198	module_init(void)
199	{
200	mod_add_cmd(&map_msgtab);
201	}
202
203	static void
204	module_exit(void)
205	{
206	mod_del_cmd(&map_msgtab);
207	}
208
209	struct module module_entry =
210	{
211	.version = "$Revision$",
212	.modinit = module_init,
213	.modexit = module_exit,
214	};