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304 lines
11 KiB
C
304 lines
11 KiB
C
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/* $Id: miniupnpc.h,v 1.76 2025/03/05 10:35:57 nanard Exp $ */
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/* vim: tabstop=4 shiftwidth=4 noexpandtab
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* Project: miniupnp
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* http://miniupnp.free.fr/ or https://miniupnp.tuxfamily.org/
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* Author: Thomas Bernard
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* Copyright (c) 2005-2025 Thomas Bernard
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* This software is subjects to the conditions detailed
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* in the LICENCE file provided within this distribution */
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#ifndef MINIUPNPC_H_INCLUDED
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#define MINIUPNPC_H_INCLUDED
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/*! \file miniupnpc.h
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* \brief Main C API for MiniUPnPc
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*
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* Contains functions to discover devices and check for device validity
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* or connectivity.
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*
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* \mainpage MiniUPnPc API documentation
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* MiniUPnPc (MiniUPnP client) is a library implementing a UPnP
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* Internet Gateway Device (IGD) control point.
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*
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* It should be used by applications that needs to listen to incoming
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* traffic from the internet which are running on a LAN where a
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* UPnP IGD is running on the router (or gateway).
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*
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* See more documentation on the website http://miniupnp.free.fr
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* or https://miniupnp.tuxfamily.org/ or GitHub :
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* https://github.com/miniupnp/miniupnp/tree/master/miniupnpc
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*/
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#include "miniupnpc_declspec.h"
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#include "igd_desc_parse.h"
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#include "upnpdev.h"
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/* error codes : */
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/*! \brief value for success */
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#define UPNPDISCOVER_SUCCESS (0)
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/*! \brief value for unknown error */
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#define UPNPDISCOVER_UNKNOWN_ERROR (-1)
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/*! \brief value for a socket error */
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#define UPNPDISCOVER_SOCKET_ERROR (-101)
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/*! \brief value for a memory allocation error */
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#define UPNPDISCOVER_MEMORY_ERROR (-102)
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/*! \brief software version */
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#define MINIUPNPC_VERSION "2.3.2"
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/*! \brief C API version */
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#define MINIUPNPC_API_VERSION 20
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/*! \brief any (ie system chosen) port */
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#define UPNP_LOCAL_PORT_ANY 0
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/*! \brief Use as an alias for 1900 for backwards compatibility */
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#define UPNP_LOCAL_PORT_SAME 1
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Structures definitions : */
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/*!
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* \brief UPnP method argument
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*/
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struct UPNParg {
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const char * elt; /*!< \brief UPnP argument name */
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const char * val; /*!< \brief UPnP argument value */
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};
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/*!
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* \brief execute a UPnP method (SOAP action)
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*
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* \param[in] url Control URL for the service
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* \param[in] service service to use
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* \param[in] action action to call
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* \param[in] args action arguments
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* \param[out] bufsize the size of the returned buffer
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* \return NULL in case of error or the raw XML response
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*/
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char *
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simpleUPnPcommand(const char * url, const char * service,
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const char * action, const struct UPNParg * args,
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int * bufsize);
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/*!
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* \brief Discover UPnP IGD on the network.
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*
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* The discovered devices are returned as a chained list.
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* It is up to the caller to free the list with freeUPNPDevlist().
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* If available, device list will be obtained from MiniSSDPd.
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*
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* \param[in] delay (in millisecond) maximum time for waiting any device
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* response
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* \param[in] multicastif If not NULL, used instead of the default
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* multicast interface for sending SSDP discover packets
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* \param[in] minissdpdsock Path to minissdpd socket, default is used if
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* NULL
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* \param[in] localport Source port to send SSDP packets.
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* #UPNP_LOCAL_PORT_SAME for 1900 (same as destination port)
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* #UPNP_LOCAL_PORT_ANY to let system assign a source port
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* \param[in] ipv6 0 for IPv4, 1 of IPv6
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* \param[in] ttl should default to 2 as advised by UDA 1.1
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* \param[out] error error code when NULL is returned
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* \return NULL or a linked list
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*/
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MINIUPNP_LIBSPEC struct UPNPDev *
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upnpDiscover(int delay, const char * multicastif,
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const char * minissdpdsock, int localport,
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int ipv6, unsigned char ttl,
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int * error);
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/*!
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* \brief Discover all UPnP devices on the network
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*
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* search for "ssdp:all"
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* \param[in] delay (in millisecond) maximum time for waiting any device
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* response
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* \param[in] multicastif If not NULL, used instead of the default
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* multicast interface for sending SSDP discover packets
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* \param[in] minissdpdsock Path to minissdpd socket, default is used if
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* NULL
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* \param[in] localport Source port to send SSDP packets.
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* #UPNP_LOCAL_PORT_SAME for 1900 (same as destination port)
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* #UPNP_LOCAL_PORT_ANY to let system assign a source port
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* \param[in] ipv6 0 for IPv4, 1 of IPv6
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* \param[in] ttl should default to 2 as advised by UDA 1.1
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* \param[out] error error code when NULL is returned
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* \return NULL or a linked list
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*/
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MINIUPNP_LIBSPEC struct UPNPDev *
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upnpDiscoverAll(int delay, const char * multicastif,
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const char * minissdpdsock, int localport,
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int ipv6, unsigned char ttl,
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int * error);
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/*!
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* \brief Discover one type of UPnP devices
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*
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* \param[in] device device type to search
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* \param[in] delay (in millisecond) maximum time for waiting any device
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* response
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* \param[in] multicastif If not NULL, used instead of the default
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* multicast interface for sending SSDP discover packets
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* \param[in] minissdpdsock Path to minissdpd socket, default is used if
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* NULL
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* \param[in] localport Source port to send SSDP packets.
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* #UPNP_LOCAL_PORT_SAME for 1900 (same as destination port)
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* #UPNP_LOCAL_PORT_ANY to let system assign a source port
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* \param[in] ipv6 0 for IPv4, 1 of IPv6
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* \param[in] ttl should default to 2 as advised by UDA 1.1
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* \param[out] error error code when NULL is returned
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* \return NULL or a linked list
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*/
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MINIUPNP_LIBSPEC struct UPNPDev *
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upnpDiscoverDevice(const char * device, int delay, const char * multicastif,
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const char * minissdpdsock, int localport,
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int ipv6, unsigned char ttl,
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int * error);
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/*!
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* \brief Discover one or several type of UPnP devices
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*
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* \param[in] deviceTypes array of device types to search (ending with NULL)
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* \param[in] delay (in millisecond) maximum time for waiting any device
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* response
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* \param[in] multicastif If not NULL, used instead of the default
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* multicast interface for sending SSDP discover packets
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* \param[in] minissdpdsock Path to minissdpd socket, default is used if
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* NULL
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* \param[in] localport Source port to send SSDP packets.
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* #UPNP_LOCAL_PORT_SAME for 1900 (same as destination port)
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* #UPNP_LOCAL_PORT_ANY to let system assign a source port
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* \param[in] ipv6 0 for IPv4, 1 of IPv6
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* \param[in] ttl should default to 2 as advised by UDA 1.1
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* \param[out] error error code when NULL is returned
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* \param[in] searchalltypes 0 to stop with the first type returning results
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* \return NULL or a linked list
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*/
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MINIUPNP_LIBSPEC struct UPNPDev *
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upnpDiscoverDevices(const char * const deviceTypes[],
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int delay, const char * multicastif,
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const char * minissdpdsock, int localport,
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int ipv6, unsigned char ttl,
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int * error,
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int searchalltypes);
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/*!
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* \brief parse root XML description of a UPnP device
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*
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* fill the IGDdatas structure.
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* \param[in] buffer character buffer containing the XML description
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* \param[in] bufsize size in bytes of the buffer
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* \param[out] data IGDdatas structure to fill
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*/
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MINIUPNP_LIBSPEC void parserootdesc(const char * buffer, int bufsize, struct IGDdatas * data);
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/*!
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* \brief structure used to get fast access to urls
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*/
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struct UPNPUrls {
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/*! \brief controlURL of the WANIPConnection */
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char * controlURL;
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/*! \brief url of the description of the WANIPConnection */
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char * ipcondescURL;
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/*! \brief controlURL of the WANCommonInterfaceConfig */
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char * controlURL_CIF;
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/*! \brief controlURL of the WANIPv6FirewallControl */
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char * controlURL_6FC;
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/*! \brief url of the root description */
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char * rootdescURL;
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};
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/*! \brief NO IGD found */
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#define UPNP_NO_IGD (0)
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/*! \brief valid and connected IGD */
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#define UPNP_CONNECTED_IGD (1)
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/*! \brief valid and connected IGD but with a reserved address
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* (non routable) */
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#define UPNP_PRIVATEIP_IGD (2)
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/*! \brief valid but not connected IGD */
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#define UPNP_DISCONNECTED_IGD (3)
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/*! \brief UPnP device not recognized as an IGD */
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#define UPNP_UNKNOWN_DEVICE (4)
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/*!
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* \brief look for a valid and possibly connected IGD in the list
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*
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* In any non zero return case, the urls and data structures
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* passed as parameters are set. Donc forget to call FreeUPNPUrls(urls) to
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* free allocated memory.
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* \param[in] devlist A device list obtained with upnpDiscover() /
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* upnpDiscoverAll() / upnpDiscoverDevice() / upnpDiscoverDevices()
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* \param[out] urls Urls for the IGD found
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* \param[out] data datas for the IGD found
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* \param[out] lanaddr buffer to copy the local address of the host to reach the IGD
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* \param[in] lanaddrlen size of the lanaddr buffer
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* \param[out] wanaddr buffer to copy the public address of the IGD
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* \param[in] wanaddrlen size of the wanaddr buffer
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* \return #UPNP_NO_IGD / #UPNP_CONNECTED_IGD / #UPNP_PRIVATEIP_IGD /
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* #UPNP_DISCONNECTED_IGD / #UPNP_UNKNOWN_DEVICE
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*/
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MINIUPNP_LIBSPEC int
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UPNP_GetValidIGD(struct UPNPDev * devlist,
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struct UPNPUrls * urls,
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struct IGDdatas * data,
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char * lanaddr, int lanaddrlen,
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char * wanaddr, int wanaddrlen);
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/*!
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* \brief Get IGD URLs and data for URL
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*
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* Used when skipping the discovery process.
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* \param[in] rootdescurl Root description URL of the device
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* \param[out] urls Urls for the IGD found
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* \param[out] data datas for the IGD found
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* \param[out] lanaddr buffer to copy the local address of the host to reach the IGD
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* \param[in] lanaddrlen size of the lanaddr buffer
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* \return 0 Not ok / 1 OK
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*/
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MINIUPNP_LIBSPEC int
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UPNP_GetIGDFromUrl(const char * rootdescurl,
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struct UPNPUrls * urls,
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struct IGDdatas * data,
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char * lanaddr, int lanaddrlen);
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/*!
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* \brief Prepare the URLs for usage
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*
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* build absolute URLs from the root description
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* \param[out] urls URL structure to initialize
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* \param[in] data datas for the IGD
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* \param[in] descURL root description URL for the IGD
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* \param[in] scope_id if not 0, add the scope to the linklocal IPv6
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* addresses in URLs
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*/
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MINIUPNP_LIBSPEC void
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GetUPNPUrls(struct UPNPUrls * urls, struct IGDdatas * data,
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const char * descURL, unsigned int scope_id);
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/*!
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* \brief free the members of a UPNPUrls struct
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*
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* All URLs buffers are freed and zeroed
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* \param[out] urls
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*/
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MINIUPNP_LIBSPEC void
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FreeUPNPUrls(struct UPNPUrls * urls);
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/*!
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* \brief check the current connection status of an IGD
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*
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* it uses UPNP_GetStatusInfo()
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* \param[in] urls IGD URLs
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* \param[in] data IGD data
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* \return 1 Connected / 0 Disconnected
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*/
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MINIUPNP_LIBSPEC int UPNPIGD_IsConnected(struct UPNPUrls * urls, struct IGDdatas * data);
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#ifdef __cplusplus
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}
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#endif
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#endif
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