[solanum.git] / modules / core / m_error.c

/*
 *  ircd-ratbox: A slightly useful ircd.
 *  m_error.c: Handles error messages from the other end.
 *
 *  Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
 *  Copyright (C) 1996-2002 Hybrid Development Team
 *  Copyright (C) 2002-2005 ircd-ratbox 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
 */

#include "stdinc.h"
#include "client.h"
#include "common.h"		/* FALSE */
#include "ircd.h"
#include "numeric.h"
#include "send.h"
#include "msg.h"
#include "modules.h"
#include "logger.h"
#include "s_conf.h"

static int m_error(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
static int ms_error(struct MsgBuf *, struct Client *, struct Client *, int, const char **);

struct Message error_msgtab = {
	"ERROR", 0, 0, 0, 0,
	{{m_error, 0}, mg_ignore, mg_ignore, {ms_error, 0}, mg_ignore, mg_ignore}
};

mapi_clist_av1 error_clist[] = {
	&error_msgtab, NULL
};

DECLARE_MODULE_AV2(error, NULL, NULL, error_clist, NULL, NULL, NULL, NULL, NULL);

/* Determine whether an ERROR message is safe to show (no IP address in it) */
static int
is_safe_error(const char *message)
{
	char prefix2[100];
	const char *p;

	if (!strncmp(message, "Closing Link: 127.0.0.1 (", 25))
		return 1;
	snprintf(prefix2, sizeof prefix2,
			"Closing Link: 127.0.0.1 %s (", me.name);
	if (!strncmp(message, prefix2, strlen(prefix2)))
		return 1;
	if (!strncmp(message, "Restart by ", 11))
		return 1;
	if (!strncmp(message, "Terminated by ", 14))
		return 1;

	if (!ircncmp(message, "Closing Link", 12))
		return 0;
	if (strchr(message, '['))
		return 0;
	p = strchr(message, '.');
	if (p != NULL && p[1] != '\0')
		return 0;
	if (strchr(message, ':'))
		return 0;

	return 1;
}

/*
 * Note: At least at protocol level ERROR has only one parameter,
 * although this is called internally from other functions
 * --msa
 *
 *      parv[*] = parameters
 */
int
m_error(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
	const char *para;
	int hideit = ConfigFileEntry.hide_error_messages;

	para = (parc > 1 && *parv[1] != '\0') ? parv[1] : "<>";

	if (IsAnyServer(client_p))
	{
		ilog(L_SERVER, "Received ERROR message from %s: %s",
		     log_client_name(source_p, SHOW_IP), para);
	}

	if(is_safe_error(para))
		hideit = 0;
	if(IsAnyServer(client_p))
	{
		if (hideit < 2)
			sendto_realops_snomask(SNO_GENERAL, hideit ? L_ADMIN : (is_remote_connect(client_p) ? L_NETWIDE : L_ALL),
					"ERROR :from %s -- %s",
					client_p->name, para);
		if (hideit > 0)
			sendto_realops_snomask(SNO_GENERAL, (hideit == 1 ? L_OPER : L_ALL) | (is_remote_connect(client_p) ? L_NETWIDE : L_ALL),
					"ERROR :from %s -- <hidden>",
					client_p->name);
	}

	exit_client(client_p, source_p, source_p, "ERROR");

	return 0;
}

static int
ms_error(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
{
	const char *para;
	int hideit = ConfigFileEntry.hide_error_messages;

	para = (parc > 1 && *parv[1] != '\0') ? parv[1] : "<>";

	ilog(L_SERVER, "Received ERROR message from %s: %s",
	     log_client_name(source_p, SHOW_IP), para);

	if(is_safe_error(para))
		hideit = 0;
	if(hideit == 2)
		return 0;

	if(client_p == source_p)
	{
		sendto_realops_snomask(SNO_GENERAL, hideit ? L_ADMIN : L_ALL, "ERROR :from %s -- %s",
				     client_p->name, para);
	}
	else
	{
		sendto_realops_snomask(SNO_GENERAL, hideit ? L_ADMIN : L_ALL, "ERROR :from %s via %s -- %s",
				     source_p->name, client_p->name, para);
	}

	return 0;
}
Commit	Line	Data
212380e3 AC	1	/*
	2	* ircd-ratbox: A slightly useful ircd.
	3	* m_error.c: Handles error messages from the other end.
	4	*
	5	* Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
	6	* Copyright (C) 1996-2002 Hybrid Development Team
	7	* Copyright (C) 2002-2005 ircd-ratbox development team
	8	*
	9	* This program is free software; you can redistribute it and/or modify
	10	* it under the terms of the GNU General Public License as published by
	11	* the Free Software Foundation; either version 2 of the License, or
	12	* (at your option) any later version.
	13	*
	14	* This program is distributed in the hope that it will be useful,
	15	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	17	* GNU General Public License for more details.
	18	*
	19	* You should have received a copy of the GNU General Public License
	20	* along with this program; if not, write to the Free Software
	21	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
	22	* USA
212380e3 AC	23	*/
	24
	25	#include "stdinc.h"
	26	#include "client.h"
	27	#include "common.h" /* FALSE */
	28	#include "ircd.h"
	29	#include "numeric.h"
	30	#include "send.h"
	31	#include "msg.h"
212380e3	32	#include "modules.h"
4016731b	33	#include "logger.h"
212380e3 AC	34	#include "s_conf.h"
212380e3 AC	35
428ca87b AC	36	static int m_error(struct MsgBuf , struct Client , struct Client , int, const char *);
428ca87b AC	37	static int ms_error(struct MsgBuf , struct Client , struct Client , int, const char *);
212380e3 AC	38
212380e3 AC	39	struct Message error_msgtab = {
7baa37a9	40	"ERROR", 0, 0, 0, 0,
212380e3 AC	41	{{m_error, 0}, mg_ignore, mg_ignore, {ms_error, 0}, mg_ignore, mg_ignore}
	42	};
	43
	44	mapi_clist_av1 error_clist[] = {
	45	&error_msgtab, NULL
	46	};
	47
105a4985	48	DECLARE_MODULE_AV2(error, NULL, NULL, error_clist, NULL, NULL, NULL, NULL, NULL);
212380e3	49
922aa826 JT	50	/* Determine whether an ERROR message is safe to show (no IP address in it) */
	51	static int
	52	is_safe_error(const char *message)
	53	{
	54	char prefix2[100];
	55	const char *p;
	56
	57	if (!strncmp(message, "Closing Link: 127.0.0.1 (", 25))
	58	return 1;
5203cba5	59	snprintf(prefix2, sizeof prefix2,
922aa826 JT	60	"Closing Link: 127.0.0.1 %s (", me.name);
	61	if (!strncmp(message, prefix2, strlen(prefix2)))
	62	return 1;
	63	if (!strncmp(message, "Restart by ", 11))
	64	return 1;
	65	if (!strncmp(message, "Terminated by ", 14))
	66	return 1;
	67
	68	if (!ircncmp(message, "Closing Link", 12))
	69	return 0;
	70	if (strchr(message, '['))
	71	return 0;
	72	p = strchr(message, '.');
	73	if (p != NULL && p[1] != '\0')
	74	return 0;
	75	if (strchr(message, ':'))
	76	return 0;
	77
	78	return 1;
	79	}
212380e3 AC	80
	81	/*
	82	* Note: At least at protocol level ERROR has only one parameter,
	83	* although this is called internally from other functions
	84	* --msa
	85	*
212380e3 AC	86	* parv[*] = parameters
	87	*/
	88	int
428ca87b	89	m_error(struct MsgBuf msgbuf_p, struct Client client_p, struct Client source_p, int parc, const char parv[])
212380e3 AC	90	{
212380e3 AC	91	const char *para;
922aa826	92	int hideit = ConfigFileEntry.hide_error_messages;
212380e3 AC	93
	94	para = (parc > 1 && *parv[1] != '\0') ? parv[1] : "<>";
	95
0a849a8f JT	96	if (IsAnyServer(client_p))
	97	{
	98	ilog(L_SERVER, "Received ERROR message from %s: %s",
	99	log_client_name(source_p, SHOW_IP), para);
	100	}
212380e3	101
922aa826 JT	102	if(is_safe_error(para))
	103	hideit = 0;
	104	if(IsAnyServer(client_p))
212380e3	105	{
922aa826 JT	106	if (hideit < 2)
	107	sendto_realops_snomask(SNO_GENERAL, hideit ? L_ADMIN : (is_remote_connect(client_p) ? L_NETWIDE : L_ALL),
	108	"ERROR :from %s -- %s",
b3ebc7ab	109	client_p->name, para);
922aa826 JT	110	if (hideit > 0)
	111	sendto_realops_snomask(SNO_GENERAL, (hideit == 1 ? L_OPER : L_ALL) \| (is_remote_connect(client_p) ? L_NETWIDE : L_ALL),
	112	"ERROR :from %s -- <hidden>",
b3ebc7ab	113	client_p->name);
212380e3 AC	114	}
	115
	116	exit_client(client_p, source_p, source_p, "ERROR");
	117
	118	return 0;
	119	}
	120
	121	static int
428ca87b	122	ms_error(struct MsgBuf msgbuf_p, struct Client client_p, struct Client source_p, int parc, const char parv[])
212380e3 AC	123	{
212380e3 AC	124	const char *para;
922aa826	125	int hideit = ConfigFileEntry.hide_error_messages;
212380e3 AC	126
	127	para = (parc > 1 && *parv[1] != '\0') ? parv[1] : "<>";
	128
	129	ilog(L_SERVER, "Received ERROR message from %s: %s",
	130	log_client_name(source_p, SHOW_IP), para);
	131
922aa826 JT	132	if(is_safe_error(para))
	133	hideit = 0;
	134	if(hideit == 2)
212380e3 AC	135	return 0;
	136
	137	if(client_p == source_p)
	138	{
922aa826	139	sendto_realops_snomask(SNO_GENERAL, hideit ? L_ADMIN : L_ALL, "ERROR :from %s -- %s",
b3ebc7ab	140	client_p->name, para);
212380e3 AC	141	}
	142	else
	143	{
922aa826	144	sendto_realops_snomask(SNO_GENERAL, hideit ? L_ADMIN : L_ALL, "ERROR :from %s via %s -- %s",
b3ebc7ab	145	source_p->name, client_p->name, para);
212380e3 AC	146	}
	147
	148	return 0;
	149	}