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/* $Id: natpmp.h,v 1.11 2009/02/27 22:38:05 nanard Exp $ */
/* libnatpmp
* Copyright (c) 2007-2008, Thomas BERNARD <miniupnp@free.fr>
* http://miniupnp.free.fr/libnatpmp.html
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
#ifndef __NATPMP_H__
#define __NATPMP_H__
/* NAT-PMP Port as defined by the NAT-PMP draft */
#define NATPMP_PORT (5351)
#include <stdint.h>
#include <time.h>
#include <sys/time.h>
#ifdef WIN32
#include <winsock2.h>
#include <stdint.h>
#define in_addr_t uint32_t
#include "declspec.h"
#else
#define LIBSPEC
#include <netinet/in.h>
#include <sys/socket.h>
#endif
typedef struct
{
int s; /* socket */
struct sockaddr *addr;
socklen_t addrlen;
uint8_t gateway[16]; /* default gateway (IPv4 or IPv6) */
int has_pending_request;
unsigned char pending_request[12];
int pending_request_len;
int try_number;
struct timeval retry_time;
} natpmp_t;
typedef struct
{
uint16_t type; /* NATPMP_RESPTYPE_* */
uint16_t resultcode; /* NAT-PMP response code */
uint32_t epoch; /* Seconds since start of epoch */
union
{
struct
{
int family;
struct in_addr addr;
struct in6_addr addr6;
} publicaddress;
struct
{
uint16_t privateport;
uint16_t mappedpublicport;
uint32_t lifetime;
} newportmapping;
} pnu;
} natpmpresp_t;
/* possible values for type field of natpmpresp_t */
#define NATPMP_RESPTYPE_PUBLICADDRESS (0)
#define NATPMP_RESPTYPE_UDPPORTMAPPING (1)
#define NATPMP_RESPTYPE_TCPPORTMAPPING (2)
/* Values to pass to sendnewportmappingrequest() */
#define NATPMP_PROTOCOL_UDP (1)
#define NATPMP_PROTOCOL_TCP (2)
/* return values */
/* NATPMP_ERR_INVALIDARGS : invalid arguments passed to the function */
#define NATPMP_ERR_INVALIDARGS (-1)
/* NATPMP_ERR_SOCKETERROR : socket() failed. check errno for details */
#define NATPMP_ERR_SOCKETERROR (-2)
/* NATPMP_ERR_CANNOTGETGATEWAY : can't get default gateway IP */
#define NATPMP_ERR_CANNOTGETGATEWAY (-3)
/* NATPMP_ERR_CLOSEERR : close() failed. check errno for details */
#define NATPMP_ERR_CLOSEERR (-4)
/* NATPMP_ERR_RECVFROM : recvfrom() failed. check errno for details */
#define NATPMP_ERR_RECVFROM (-5)
/* NATPMP_ERR_NOPENDINGREQ : readnatpmpresponseorretry() called while
* no NAT-PMP request was pending */
#define NATPMP_ERR_NOPENDINGREQ (-6)
/* NATPMP_ERR_NOGATEWAYSUPPORT : the gateway does not support NAT-PMP */
#define NATPMP_ERR_NOGATEWAYSUPPORT (-7)
/* NATPMP_ERR_CONNECTERR : connect() failed. check errno for details */
#define NATPMP_ERR_CONNECTERR (-8)
/* NATPMP_ERR_WRONGPACKETSOURCE : packet not received from the network gateway */
#define NATPMP_ERR_WRONGPACKETSOURCE (-9)
/* NATPMP_ERR_SENDERR : send() failed. check errno for details */
#define NATPMP_ERR_SENDERR (-10)
/* NATPMP_ERR_FCNTLERROR : fcntl() failed. check errno for details */
#define NATPMP_ERR_FCNTLERROR (-11)
/* NATPMP_ERR_GETTIMEOFDAYERR : gettimeofday() failed. check errno for details */
#define NATPMP_ERR_GETTIMEOFDAYERR (-12)
/* NATPMP_ERR_BINDERROR : bind() failed. check errno for details */
#define NATPMP_ERR_BINDERROR (-13)
/* NATPMP_ERR_ADDRERROR : gateway does not use the same inet protocol as the passed address */
#define NATPMP_ERR_ADDRERROR (-14)
/* */
#define NATPMP_ERR_UNSUPPORTEDVERSION (-15)
#define NATPMP_ERR_UNSUPPORTEDOPCODE (-16)
/* Errors from the server : */
#define NATPMP_ERR_UNDEFINEDERROR (-49)
#define NATPMP_ERR_NOTAUTHORIZED (-51)
#define NATPMP_ERR_NETWORKFAILURE (-52)
#define NATPMP_ERR_OUTOFRESOURCES (-53)
/* NATPMP_TRYAGAIN : no data available for the moment. try again later */
#define NATPMP_TRYAGAIN (-100)
/* initnatpmp()
* initialize a natpmp_t object
* Return values :
* 0 = OK
* NATPMP_ERR_INVALIDARGS
* NATPMP_ERR_SOCKETERROR
* NATPMP_ERR_FCNTLERROR
* NATPMP_ERR_CANNOTGETGATEWAY
* NATPMP_ERR_CONNECTERR */
LIBSPEC int initnatpmp (natpmp_t * p);
/* closenatpmp()
* close resources associated with a natpmp_t object
* Return values :
* 0 = OK
* NATPMP_ERR_INVALIDARGS
* NATPMP_ERR_CLOSEERR */
LIBSPEC int closenatpmp (natpmp_t * p);
/* sendpublicaddressrequest()
* send a public address NAT-PMP request to the network gateway
* Return values :
* 2 = OK (size of the request)
* NATPMP_ERR_INVALIDARGS
* NATPMP_ERR_SENDERR */
LIBSPEC int sendpublicaddressrequest (natpmp_t * p);
/* sendnewportmappingrequest()
* send a new port mapping NAT-PMP request to the network gateway
* Arguments :
* protocol is either NATPMP_PROTOCOL_TCP or NATPMP_PROTOCOL_UDP,
* lifetime is in seconds.
* To remove a port mapping, set lifetime to zero.
* To remove all port mappings to the host, set lifetime and both ports
* to zero.
* Return values :
* 12 = OK (size of the request)
* NATPMP_ERR_INVALIDARGS
* NATPMP_ERR_SENDERR */
LIBSPEC int sendnewportmappingrequest (natpmp_t * p, int protocol,
uint16_t privateport,
uint16_t publicport,
uint32_t lifetime);
/* getnatpmprequesttimeout()
* fills the timeval structure with the timeout duration of the
* currently pending NAT-PMP request.
* Return values :
* 0 = OK
* NATPMP_ERR_INVALIDARGS
* NATPMP_ERR_GETTIMEOFDAYERR
* NATPMP_ERR_NOPENDINGREQ */
LIBSPEC int getnatpmprequesttimeout (natpmp_t * p, struct timeval *timeout);
/* readnatpmpresponseorretry()
* fills the natpmpresp_t structure if possible
* Return values :
* 0 = OK
* NATPMP_TRYAGAIN
* NATPMP_ERR_INVALIDARGS
* NATPMP_ERR_NOPENDINGREQ
* NATPMP_ERR_NOGATEWAYSUPPORT
* NATPMP_ERR_RECVFROM
* NATPMP_ERR_WRONGPACKETSOURCE
* NATPMP_ERR_UNSUPPORTEDVERSION
* NATPMP_ERR_UNSUPPORTEDOPCODE
* NATPMP_ERR_NOTAUTHORIZED
* NATPMP_ERR_NETWORKFAILURE
* NATPMP_ERR_OUTOFRESOURCES
* NATPMP_ERR_UNSUPPORTEDOPCODE
* NATPMP_ERR_UNDEFINEDERROR */
LIBSPEC int readnatpmpresponseorretry (natpmp_t * p, natpmpresp_t * response);
#ifdef ENABLE_STRNATPMPERR
LIBSPEC const char *strnatpmperr (int t);
#endif
#endif
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