trunk/modules/m_trace.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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
 *  USA
 */

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

#include "stdinc.h"
#include "list.h"
#include "client.h"
#include "hash.h"
#include "irc_string.h"
#include "ircd.h"
#include "numeric.h"
#include "server.h"
#include "send.h"
#include "parse.h"
#include "modules.h"
#include "conf.h"
#include "conf_class.h"


static void do_actual_trace(struct Client *, int, char *[]);
static void report_this_status(struct Client *, struct Client *, int);

static void
trace_get_dependent(unsigned int *const server,
                    unsigned int *const client, const struct Client *target_p)
{
  const dlink_node *node = NULL;

  (*server)++;
  (*client) += dlink_list_length(&target_p->serv->client_list);

  DLINK_FOREACH(node, target_p->serv->server_list.head)
    trace_get_dependent(server, client, node->data);
}

/*
 * m_trace()
 *
 *      parv[0] = command
 *      parv[1] = target client/server to trace
 */
static int
m_trace(struct Client *source_p, int parc, char *parv[])
{
  const char *name = NULL;

  if (parc > 1)
    name = parv[1];
  else
    name = me.name;

  sendto_one_numeric(source_p, &me, RPL_ENDOFTRACE, name);
  return 0;
}

/* mo_trace()
 *      parv[0] = command
 *      parv[1] = servername
 */
static int
mo_trace(struct Client *source_p, int parc, char *parv[])
{
  dlink_node *node = NULL;
  const char *name = NULL;

  if (parc > 2)
    if (hunt_server(source_p, ":%s TRACE %s :%s", 2, parc, parv) != HUNTED_ISME)
      return 0;

  if (parc > 1)
    name = parv[1];
  else
    name = me.name;

  switch (hunt_server(source_p, ":%s TRACE :%s", 1, parc, parv))
  {
    case HUNTED_PASS: /* note: gets here only if parv[1] exists */
    {
      struct Client *ac2ptr = NULL;

      if ((ac2ptr = hash_find_client(name)) == NULL)
      {
        DLINK_FOREACH(node, global_client_list.head)
        {
          ac2ptr = node->data;

          if (!match(name, ac2ptr->name))
            break;
          else
            ac2ptr = NULL;
        }
     }

      if (ac2ptr)
        sendto_one_numeric(source_p, &me, RPL_TRACELINK,
                           ircd_version, name, ac2ptr->from->name);
      else
        sendto_one_numeric(source_p, &me, RPL_TRACELINK,
                           ircd_version, name, "ac2ptr_is_NULL!!");
      return 0;
    }

    case HUNTED_ISME:
      do_actual_trace(source_p, parc, parv);
      break;
    default:
      return 0;
  }

  return 0;
}

/*
** ms_trace
**      parv[0] = command
**      parv[1] = servername
*/
static int
ms_trace(struct Client *source_p, int parc, char *parv[])
{
  if (hunt_server(source_p, ":%s TRACE %s :%s",
                  2, parc, parv) != HUNTED_ISME)
    return 0;

  if (HasUMode(source_p, UMODE_OPER))
    return mo_trace(source_p, parc, parv);
  return 0;
}

static void
do_actual_trace(struct Client *source_p, int parc, char *parv[])
{
  struct Client *target_p = NULL;
  int doall = 0;
  int wilds, dow;
  dlink_node *node;
  const char *name;

  if (parc > 1)
    name = parv[1];
  else
    name = me.name;

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

  if (!match(name, me.name))
    doall = 1;
  else if (!MyClient(source_p) && !strcmp(name, me.id))
  {
    doall = 1;
    name = me.name;
  }

  wilds = !parv[1] || has_wildcards(name);
  dow = wilds || doall;

  if (!HasUMode(source_p, UMODE_OPER) || !dow) /* non-oper traces must be full nicks */
                              /* lets also do this for opers tracing nicks */
  {
    target_p = hash_find_client(name);

    if (target_p && IsClient(target_p))
    {
      if (HasUMode(target_p, UMODE_OPER))
      {
        sendto_one_numeric(source_p, &me, RPL_TRACEOPERATOR,
                   get_client_class(&target_p->connection->confs), get_client_name(target_p, HIDE_IP),
                   target_p->sockhost,
                   CurrentTime - target_p->connection->lasttime,
                   idle_time_get(source_p, target_p));
      }
      else
      {
        sendto_one_numeric(source_p, &me, RPL_TRACEUSER,
                   get_client_class(&target_p->connection->confs), get_client_name(target_p, HIDE_IP),
                   target_p->sockhost,
                   CurrentTime - target_p->connection->lasttime,
                   idle_time_get(source_p, target_p));
      }
    }

    sendto_one_numeric(source_p, &me, RPL_ENDOFTRACE, name);
    return;
  }

  /* report all direct connections */
  DLINK_FOREACH(node, local_client_list.head)
  {
    target_p = node->data;

    if (HasUMode(target_p, UMODE_INVISIBLE) && dow &&
        !(MyConnect(source_p) && HasUMode(source_p, UMODE_OPER)) &&
        !HasUMode(target_p, UMODE_OPER) && (target_p != source_p))
      continue;
    if (!doall && wilds && match(name, target_p->name))
      continue;
    if (!dow && irccmp(name, target_p->name))
      continue;

    report_this_status(source_p, target_p, dow);
  }

  DLINK_FOREACH(node, local_server_list.head)
  {
    target_p = node->data;

    if (!doall && wilds && match(name, target_p->name))
      continue;
    if (!dow && irccmp(name, target_p->name))
      continue;

    report_this_status(source_p, target_p, dow);
  }

  /* This section is to report the unknowns */
  DLINK_FOREACH(node, unknown_list.head)
  {
    target_p = node->data;

    if (!doall && wilds && match(name, target_p->name))
      continue;
    if (!dow && irccmp(name, target_p->name))
      continue;

    report_this_status(source_p, target_p, dow);
  }

  DLINK_FOREACH(node, class_get_list()->head)
  {
    const struct ClassItem *class = node->data;

    if (class->ref_count > 0)
      sendto_one_numeric(source_p, &me, RPL_TRACECLASS, class->name, class->ref_count);
  }

  sendto_one_numeric(source_p, &me, RPL_ENDOFTRACE, name);
}

/* report_this_status()
 *
 * inputs       - pointer to client to report to
 *              - pointer to client to report about
 * output       - counter of number of hits
 * side effects - NONE
 */
static void
report_this_status(struct Client *source_p, struct Client *target_p, int dow)
{
  const char *name;
  const char *class_name;

  name = get_client_name(target_p, HIDE_IP);
  class_name = get_client_class(&target_p->connection->confs);

  switch (target_p->status)
  {
    case STAT_CONNECTING:
      sendto_one_numeric(source_p, &me, RPL_TRACECONNECTING, class_name,
                         HasUMode(source_p, UMODE_ADMIN) ? name : target_p->name);
      break;
    case STAT_HANDSHAKE:
      sendto_one_numeric(source_p, &me, RPL_TRACEHANDSHAKE, class_name,
                         HasUMode(source_p, UMODE_ADMIN) ? name : target_p->name);
      break;
    case STAT_ME:
      break;
    case STAT_UNKNOWN:
      sendto_one_numeric(source_p, &me, RPL_TRACEUNKNOWN, class_name,
                         name, target_p->sockhost,
                         CurrentTime - target_p->connection->firsttime);
      break;
    case STAT_CLIENT:
      if (HasUMode(target_p, UMODE_OPER))
        sendto_one_numeric(source_p, &me, RPL_TRACEOPERATOR, class_name, name,
                           target_p->sockhost,
                           CurrentTime - target_p->connection->lasttime,
                           idle_time_get(source_p, target_p));
      else
        sendto_one_numeric(source_p, &me, RPL_TRACEUSER, class_name, name,
                           target_p->sockhost,
                           CurrentTime - target_p->connection->lasttime,
                           idle_time_get(source_p, target_p));
      break;
    case STAT_SERVER:
    {
      unsigned int clients = 0;
      unsigned int servers = 0;

      trace_get_dependent(&servers, &clients, target_p);

      if (!HasUMode(source_p, UMODE_ADMIN))
        name = get_client_name(target_p, MASK_IP);

      sendto_one_numeric(source_p, &me, RPL_TRACESERVER, class_name, servers,
                         clients, name, *(target_p->serv->by) ?
                         target_p->serv->by : "*", "*",
                         me.name, CurrentTime - target_p->connection->lasttime);
      break;
    }

    default: /* ...we actually shouldn't come here... --msa */
      sendto_one_numeric(source_p, &me, RPL_TRACENEWTYPE, name);
      break;
  }
}

static struct Message trace_msgtab =
{
  "TRACE", NULL, 0, 0, 0, MAXPARA, MFLG_SLOW, 0,
  { m_unregistered, m_trace, ms_trace, m_ignore, mo_trace, m_ignore }
};

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

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

struct module module_entry =
{
  .node    = { NULL, NULL, NULL },
  .name    = NULL,
  .version = "$Revision$",
  .handle  = NULL,
  .modinit = module_init,
  .modexit = module_exit,
  .flags   = 0
};
Revision:	4967
Committed:	Mon Dec 1 14:34:29 2014 UTC (10 years, 8 months ago) by michael
Content type:	text/x-csrc
File size:	9735 byte(s)
Log Message:	- general::hide_spoof_ips is now deprecated
#	User	Rev	Content
1	adx	30	/*
2	michael	2820	* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
3	adx	30	*
4	michael	2820	* Copyright (c) 1997-2014 ircd-hybrid development team
5	adx	30	*
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	michael	4565	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
19	adx	30	* USA
20			*/
21
22	michael	2820	/*! \file m_trace.c
23			* \brief Includes required functions for processing the TRACE command.
24			* \version $Id$
25			*/
26
27	adx	30	#include "stdinc.h"
28	michael	1011	#include "list.h"
29	adx	30	#include "client.h"
30			#include "hash.h"
31			#include "irc_string.h"
32			#include "ircd.h"
33			#include "numeric.h"
34	michael	3347	#include "server.h"
35	adx	30	#include "send.h"
36			#include "parse.h"
37			#include "modules.h"
38	michael	1309	#include "conf.h"
39	michael	1632	#include "conf_class.h"
40	adx	30
41	michael	1230
42	michael	889	static void do_actual_trace(struct Client , int, char []);
43			static void report_this_status(struct Client , struct Client , int);
44	adx	30
45	michael	889	static void
46	michael	2262	trace_get_dependent(unsigned int *const server,
47			unsigned int const client, const struct Client target_p)
48	michael	889	{
49	michael	4815	const dlink_node *node = NULL;
50	michael	889
51			(*server)++;
52			(*client) += dlink_list_length(&target_p->serv->client_list);
53
54	michael	4815	DLINK_FOREACH(node, target_p->serv->server_list.head)
55			trace_get_dependent(server, client, node->data);
56	michael	889	}
57
58	adx	30	/*
59			* m_trace()
60			*
61	michael	3096	* parv[0] = command
62	adx	30	* parv[1] = target client/server to trace
63			*/
64	michael	2820	static int
65	michael	3156	m_trace(struct Client source_p, int parc, char parv[])
66	adx	30	{
67	michael	4815	const char *name = NULL;
68	adx	30
69			if (parc > 1)
70	michael	4815	name = parv[1];
71	adx	30	else
72	michael	4815	name = me.name;
73	adx	30
74	michael	4815	sendto_one_numeric(source_p, &me, RPL_ENDOFTRACE, name);
75	michael	2820	return 0;
76	adx	30	}
77
78			/* mo_trace()
79	michael	3096	* parv[0] = command
80	adx	30	* parv[1] = servername
81			*/
82	michael	2820	static int
83	michael	3156	mo_trace(struct Client source_p, int parc, char parv[])
84	adx	30	{
85	michael	4815	dlink_node *node = NULL;
86			const char *name = NULL;
87	adx	30
88			if (parc > 2)
89	michael	3156	if (hunt_server(source_p, ":%s TRACE %s :%s", 2, parc, parv) != HUNTED_ISME)
90	michael	2820	return 0;
91	adx	30
92			if (parc > 1)
93	michael	4815	name = parv[1];
94	adx	30	else
95	michael	4815	name = me.name;
96	adx	30
97	michael	3156	switch (hunt_server(source_p, ":%s TRACE :%s", 1, parc, parv))
98	adx	30	{
99			case HUNTED_PASS: /* note: gets here only if parv[1] exists */
100			{
101			struct Client *ac2ptr = NULL;
102
103	michael	4815	if ((ac2ptr = hash_find_client(name)) == NULL)
104	adx	30	{
105	michael	4815	DLINK_FOREACH(node, global_client_list.head)
106	adx	30	{
107	michael	4815	ac2ptr = node->data;
108	adx	30
109	michael	4815	if (!match(name, ac2ptr->name))
110	adx	30	break;
111			else
112			ac2ptr = NULL;
113			}
114			}
115
116	michael	3246	if (ac2ptr)
117	michael	3109	sendto_one_numeric(source_p, &me, RPL_TRACELINK,
118	michael	4815	ircd_version, name, ac2ptr->from->name);
119	adx	30	else
120	michael	3109	sendto_one_numeric(source_p, &me, RPL_TRACELINK,
121	michael	4815	ircd_version, name, "ac2ptr_is_NULL!!");
122	michael	2820	return 0;
123	adx	30	}
124	michael	1121
125	adx	30	case HUNTED_ISME:
126	michael	1149	do_actual_trace(source_p, parc, parv);
127	adx	30	break;
128			default:
129	michael	2820	return 0;
130	adx	30	}
131	michael	2820
132			return 0;
133	adx	30	}
134
135	michael	1149	/*
136			** ms_trace
137	michael	3096	** parv[0] = command
138	michael	1149	** parv[1] = servername
139			*/
140	michael	2820	static int
141	michael	3156	ms_trace(struct Client source_p, int parc, char parv[])
142	michael	1149	{
143	michael	3156	if (hunt_server(source_p, ":%s TRACE %s :%s",
144	michael	2863	2, parc, parv) != HUNTED_ISME)
145	michael	2820	return 0;
146	michael	1149
147	michael	1219	if (HasUMode(source_p, UMODE_OPER))
148	michael	3156	return mo_trace(source_p, parc, parv);
149	michael	2820	return 0;
150	michael	1149	}
151
152			static void
153	michael	889	do_actual_trace(struct Client source_p, int parc, char parv[])
154	adx	30	{
155			struct Client *target_p = NULL;
156			int doall = 0;
157	michael	889	int wilds, dow;
158	michael	4815	dlink_node *node;
159			const char *name;
160	adx	30
161			if (parc > 1)
162	michael	4815	name = parv[1];
163	adx	30	else
164	michael	4815	name = me.name;
165	adx	30
166	michael	1618	sendto_realops_flags(UMODE_SPY, L_ALL, SEND_NOTICE,
167	michael	1144	"TRACE requested by %s (%s@%s) [%s]",
168			source_p->name, source_p->username,
169			source_p->host, source_p->servptr->name);
170
171	michael	4815	if (!match(name, me.name))
172	michael	1243	doall = 1;
173	michael	4815	else if (!MyClient(source_p) && !strcmp(name, me.id))
174	adx	30	{
175	michael	1243	doall = 1;
176	michael	4815	name = me.name;
177	adx	30	}
178
179	michael	4815	wilds = !parv[1] \|\| has_wildcards(name);
180	adx	30	dow = wilds \|\| doall;
181
182	michael	1219	if (!HasUMode(source_p, UMODE_OPER) \|\| !dow) /* non-oper traces must be full nicks */
183	adx	30	/* lets also do this for opers tracing nicks */
184			{
185	michael	4815	target_p = hash_find_client(name);
186	michael	2345
187	michael	2820	if (target_p && IsClient(target_p))
188	adx	30	{
189	michael	1219	if (HasUMode(target_p, UMODE_OPER))
190	adx	30	{
191	michael	3109	sendto_one_numeric(source_p, &me, RPL_TRACEOPERATOR,
192	michael	4815	get_client_class(&target_p->connection->confs), get_client_name(target_p, HIDE_IP),
193	michael	4967	target_p->sockhost,
194	michael	4588	CurrentTime - target_p->connection->lasttime,
195	michael	1783	idle_time_get(source_p, target_p));
196	adx	30	}
197			else
198			{
199	michael	3109	sendto_one_numeric(source_p, &me, RPL_TRACEUSER,
200	michael	4815	get_client_class(&target_p->connection->confs), get_client_name(target_p, HIDE_IP),
201	michael	4967	target_p->sockhost,
202	michael	4588	CurrentTime - target_p->connection->lasttime,
203	michael	1783	idle_time_get(source_p, target_p));
204	adx	30	}
205			}
206	michael	2345
207	michael	4815	sendto_one_numeric(source_p, &me, RPL_ENDOFTRACE, name);
208	adx	30	return;
209			}
210
211			/* report all direct connections */
212	michael	4815	DLINK_FOREACH(node, local_client_list.head)
213	adx	30	{
214	michael	4815	target_p = node->data;
215	adx	30
216	michael	1219	if (HasUMode(target_p, UMODE_INVISIBLE) && dow &&
217	michael	2345	!(MyConnect(source_p) && HasUMode(source_p, UMODE_OPER)) &&
218			!HasUMode(target_p, UMODE_OPER) && (target_p != source_p))
219	adx	30	continue;
220	michael	4815	if (!doall && wilds && match(name, target_p->name))
221	adx	30	continue;
222	michael	4815	if (!dow && irccmp(name, target_p->name))
223	adx	30	continue;
224
225	michael	889	report_this_status(source_p, target_p, dow);
226	adx	30	}
227
228	michael	4815	DLINK_FOREACH(node, local_server_list.head)
229	adx	30	{
230	michael	4815	target_p = node->data;
231	adx	30
232	michael	4815	if (!doall && wilds && match(name, target_p->name))
233	adx	30	continue;
234	michael	4815	if (!dow && irccmp(name, target_p->name))
235	adx	30	continue;
236
237	michael	889	report_this_status(source_p, target_p, dow);
238	adx	30	}
239
240			/* This section is to report the unknowns */
241	michael	4815	DLINK_FOREACH(node, unknown_list.head)
242	adx	30	{
243	michael	4815	target_p = node->data;
244	adx	30
245	michael	4815	if (!doall && wilds && match(name, target_p->name))
246	adx	30	continue;
247	michael	4815	if (!dow && irccmp(name, target_p->name))
248	adx	30	continue;
249
250	michael	889	report_this_status(source_p, target_p, dow);
251	adx	30	}
252
253	michael	4815	DLINK_FOREACH(node, class_get_list()->head)
254	adx	30	{
255	michael	4815	const struct ClassItem *class = node->data;
256	michael	889
257	michael	1632	if (class->ref_count > 0)
258	michael	3109	sendto_one_numeric(source_p, &me, RPL_TRACECLASS, class->name, class->ref_count);
259	adx	30	}
260
261	michael	4815	sendto_one_numeric(source_p, &me, RPL_ENDOFTRACE, name);
262	adx	30	}
263
264			/* report_this_status()
265			*
266			* inputs - pointer to client to report to
267			* - pointer to client to report about
268			* output - counter of number of hits
269			* side effects - NONE
270			*/
271	michael	889	static void
272			report_this_status(struct Client source_p, struct Client target_p, int dow)
273	adx	30	{
274			const char *name;
275			const char *class_name;
276
277			name = get_client_name(target_p, HIDE_IP);
278	michael	4588	class_name = get_client_class(&target_p->connection->confs);
279	adx	30
280	michael	889	switch (target_p->status)
281	adx	30	{
282			case STAT_CONNECTING:
283	michael	3109	sendto_one_numeric(source_p, &me, RPL_TRACECONNECTING, class_name,
284	michael	4967	HasUMode(source_p, UMODE_ADMIN) ? name : target_p->name);
285	adx	30	break;
286			case STAT_HANDSHAKE:
287	michael	3109	sendto_one_numeric(source_p, &me, RPL_TRACEHANDSHAKE, class_name,
288	michael	4967	HasUMode(source_p, UMODE_ADMIN) ? name : target_p->name);
289	adx	30	break;
290			case STAT_ME:
291			break;
292			case STAT_UNKNOWN:
293	michael	3109	sendto_one_numeric(source_p, &me, RPL_TRACEUNKNOWN, class_name,
294	michael	4967	name, target_p->sockhost,
295			CurrentTime - target_p->connection->firsttime);
296	adx	30	break;
297			case STAT_CLIENT:
298	michael	4967	if (HasUMode(target_p, UMODE_OPER))
299			sendto_one_numeric(source_p, &me, RPL_TRACEOPERATOR, class_name, name,
300			target_p->sockhost,
301			CurrentTime - target_p->connection->lasttime,
302			idle_time_get(source_p, target_p));
303			else
304			sendto_one_numeric(source_p, &me, RPL_TRACEUSER, class_name, name,
305			target_p->sockhost,
306			CurrentTime - target_p->connection->lasttime,
307			idle_time_get(source_p, target_p));
308	adx	30	break;
309			case STAT_SERVER:
310	michael	889	{
311	michael	2262	unsigned int clients = 0;
312			unsigned int servers = 0;
313	michael	889
314			trace_get_dependent(&servers, &clients, target_p);
315
316	michael	1219	if (!HasUMode(source_p, UMODE_ADMIN))
317	adx	30	name = get_client_name(target_p, MASK_IP);
318
319	michael	3109	sendto_one_numeric(source_p, &me, RPL_TRACESERVER, class_name, servers,
320	michael	4967	clients, name, *(target_p->serv->by) ?
321			target_p->serv->by : "", "",
322			me.name, CurrentTime - target_p->connection->lasttime);
323	adx	30	break;
324	michael	889	}
325	michael	2820
326	michael	3109	default: /* ...we actually shouldn't come here... --msa */
327			sendto_one_numeric(source_p, &me, RPL_TRACENEWTYPE, name);
328	adx	30	break;
329			}
330			}
331	michael	1230
332	michael	2820	static struct Message trace_msgtab =
333			{
334	michael	4545	"TRACE", NULL, 0, 0, 0, MAXPARA, MFLG_SLOW, 0,
335	michael	1230	{ m_unregistered, m_trace, ms_trace, m_ignore, mo_trace, m_ignore }
336			};
337
338			static void
339			module_init(void)
340			{
341			mod_add_cmd(&trace_msgtab);
342			}
343
344			static void
345			module_exit(void)
346			{
347			mod_del_cmd(&trace_msgtab);
348			}
349
350	michael	2820	struct module module_entry =
351			{
352	michael	1230	.node = { NULL, NULL, NULL },
353			.name = NULL,
354			.version = "$Revision$",
355			.handle = NULL,
356			.modinit = module_init,
357			.modexit = module_exit,
358			.flags = 0
359			};