OpenOBEX library - Free implementation of the Object Exchange protocol. More...

#include <sys/socket.h>
#include <inttypes.h>
#include <openobex/obex_const.h>

Macros
#define	OPENOBEX_VERSION(a, b, c) (((a) << 16) + ((b) << 8) + (c))

Typedefs
typedef void *	obex_t
typedef void *	obex_object_t
typedef void(*	obex_event_t )(obex_t handle, obex_object_t obj, int mode, int event, int obex_cmd, int obex_rsp)

Functions
obex_t *	OBEX_Init (int transport, obex_event_t eventcb, unsigned int flags)
	Initialize OBEX.
void	OBEX_Cleanup (obex_t *self)
	Close down an OBEX instance.
void	OBEX_SetUserData (obex_t self, void data)
	Set userdata of an OBEX handle.
void *	OBEX_GetUserData (obex_t *self)
	Read the userdata from an OBEX handle.
void	OBEX_SetUserCallBack (obex_t self, obex_event_t eventcb, void data)
	Change user callback on an OBEX handle.
int	OBEX_SetTransportMTU (obex_t *self, uint16_t mtu_rx, uint16_t mtu_tx_max)
	Set MTU to be used for receive and transmit.
int	OBEX_GetFD (obex_t *self)
	Get FD.
int	OBEX_RegisterCTransport (obex_t self, obex_ctrans_t ctrans)
	Register a custom transport.
void	OBEX_SetCustomData (obex_t self, void data)
	Set customdata of an OBEX handle.
void *	OBEX_GetCustomData (obex_t *self)
	Read the customdata from an OBEX handle.
int	OBEX_TransportConnect (obex_t self, struct sockaddr saddr, int addlen)
	Try to connect to peer.
int	OBEX_TransportDisconnect (obex_t *self)
	Disconnect transport.
int	OBEX_CustomDataFeed (obex_t self, uint8_t inputbuf, int actual)
	Feed OBEX with data when using a custom transport.
int	OBEX_HandleInput (obex_t *self, int timeout)
	Let the OBEX parser do some work.
int	OBEX_ServerRegister (obex_t self, struct sockaddr saddr, int addrlen)
	Start listening for incoming connections.
obex_t *	OBEX_ServerAccept (obex_t server, obex_event_t eventcb, void data)
	Accept an incoming connection.
int	OBEX_Request (obex_t self, obex_object_t object)
	Start a request (as client).
int	OBEX_CancelRequest (obex_t *self, int nice)
	Cancel an ongoing operation.
int	OBEX_SuspendRequest (obex_t self, obex_object_t object)
	Suspend transfer of an object.
int	OBEX_ResumeRequest (obex_t *self)
	Resume transfer of an object.
obex_object_t *	OBEX_ObjectNew (obex_t *self, uint8_t cmd)
	Create a new OBEX Object.
int	OBEX_ObjectDelete (obex_t self, obex_object_t object)
	Delete an OBEX object.
int	OBEX_ObjectAddHeader (obex_t self, obex_object_t object, uint8_t hi, obex_headerdata_t hv, uint32_t hv_size, unsigned int flags)
	Attach a header to an object.
int	OBEX_ObjectGetNextHeader (obex_t self, obex_object_t object, uint8_t hi, obex_headerdata_t hv, uint32_t *hv_size)
	Get next available header from an object.
int	OBEX_ObjectReParseHeaders (obex_t self, obex_object_t object)
	Allow the user to parse again the rx headers.
int	OBEX_ObjectSetRsp (obex_object_t *object, uint8_t rsp, uint8_t lastrsp)
	Sets the response to a received request.
int	OBEX_ObjectGetNonHdrData (obex_object_t object, uint8_t *buffer)
	Get any data which was before headers.
int	OBEX_ObjectSetNonHdrData (obex_object_t object, const uint8_t buffer, unsigned int len)
	Set data to send before headers.
int	OBEX_ObjectSetHdrOffset (obex_object_t *object, unsigned int offset)
	Set headeroffset.
int	OBEX_ObjectReadStream (obex_t self, obex_object_t object, const uint8_t **buf)
	Read data from body stream.
int	OBEX_ObjectGetCommand (obex_t self, obex_object_t object)
	Get the OBEX commmand of an object.
int	OBEX_UnicodeToChar (uint8_t c, const uint8_t uc, int size)
	Simple unicode to char function.
int	OBEX_CharToUnicode (uint8_t uc, const uint8_t c, int size)
	Simple char to unicode function.
char *	OBEX_ResponseToString (int rsp)
	Return a human understandable string from a response-code.
char *	OBEX_GetResponseMessage (obex_t *self, int rsp)
	Return a human understandable string from a response-code.
int	TcpOBEX_ServerRegister (obex_t self, struct sockaddr addr, int addrlen)
	Start listening for incoming TCP connections.
int	TcpOBEX_TransportConnect (obex_t self, struct sockaddr addr, int addrlen)
	Connect TCP transport.
int	InOBEX_ServerRegister (obex_t *self)
	Start listening for incoming connections.
int	InOBEX_TransportConnect (obex_t self, struct sockaddr saddr, int addrlen)
	Connect Inet transport (deprecated).
int	IrOBEX_ServerRegister (obex_t self, const char service)
	Start listening for incoming connections.
int	IrOBEX_TransportConnect (obex_t self, const char service)
	Connect Irda transport.
int	FdOBEX_TransportSetup (obex_t *self, int rfd, int wfd, int mtu)
int	OBEX_FindInterfaces (obex_t self, obex_interface_t *intf)
	Get a list of OBEX interfaces on the system.
int	OBEX_InterfaceConnect (obex_t self, obex_interface_t intf)
	Connect USB interface.
void	OBEX_FreeInterfaces (obex_t *self)
	Free memory allocated to OBEX interface structures.

Detailed Description

OpenOBEX library - Free implementation of the Object Exchange protocol.

Copyright (C) 1999-2000 Dag Brattli dagb@.nosp@m.cs.u.nosp@m.it.no Copyright (C) 1999-2000 Pontus Fuchs pontu.nosp@m.s.fu.nosp@m.chs@t.nosp@m.acte.nosp@m.l.se Copyright (C) 2001-2002 Jean Tourrilhes jt@hp.nosp@m.l.hp.nosp@m..com Copyright (C) 2002-2006 Marcel Holtmann marce.nosp@m.l@ho.nosp@m.ltman.nosp@m.n.or.nosp@m.g Copyright (C) 2002-2008 Christian W. Zuckschwerdt zany@.nosp@m.triq.nosp@m..net Copyright (C) 2002 Dmitry Kasatkin dmitr.nosp@m.y.ka.nosp@m.satki.nosp@m.n@no.nosp@m.kia.c.nosp@m.om Copyright (C) 2005 Herton Ronaldo Krzesinski herto.nosp@m.n@co.nosp@m.necti.nosp@m.va.c.nosp@m.om.br Copyright (C) 2005-2008 Alex Kanavin ak@se.nosp@m.nsi..nosp@m.org Copyright (C) 2006 Johan Hedberg johan.nosp@m..hed.nosp@m.berg@.nosp@m.noki.nosp@m.a.com Copyright (C) 2007-2008 Hendrik Sattler post@.nosp@m.hend.nosp@m.rik-s.nosp@m.attl.nosp@m.er.de

OpenOBEX is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along with OpenOBEX. If not, see http://www.gnu.org/.

Macro Definition Documentation

#define OPENOBEX_VERSION	(	a,
		b,
		c
	)	(((a) << 16) + ((b) << 8) + (c))

Typedef Documentation

typedef void(* obex_event_t)(obex_t *handle, obex_object_t *obj, int mode, int event, int obex_cmd, int obex_rsp)

typedef void* obex_object_t

typedef void* obex_t

Function Documentation

int FdOBEX_TransportSetup	(	obex_t *	self,
		int	rfd,
		int	wfd,
		int	mtu
	)

int InOBEX_ServerRegister ( obex_t * self )

Start listening for incoming connections.

Parameters

self	OBEX handle

Returns: -1 on error

An easier server function to use for TCP/IP (InOBEX) only.

This function is deprecated, use TcpOBEX_ServerRegister() instead.

int InOBEX_TransportConnect	(	obex_t *	self,
		struct sockaddr *	saddr,
		int	addrlen
	)

Connect Inet transport (deprecated).

Parameters

self	OBEX handle
saddr	Address to connect to
addrlen	Length of address

Returns: -1 on error

An easier connect function to use for TCP/IP (InOBEX) only.

This function is deprecated, use TcpOBEX_TransportConnect() instead.

int IrOBEX_ServerRegister	(	obex_t *	self,
		const char *	service
	)

Start listening for incoming connections.

Parameters

self	OBEX handle
service	Service to bind to.

Returns: -1 or negative error code on error

An easier server function to use for IrDA (IrOBEX) only.

int IrOBEX_TransportConnect	(	obex_t *	self,
		const char *	service
	)

Connect Irda transport.

Parameters

self	OBEX handle
service	IrIAS service name to connect to

Returns: -1 or negative error code on error

An easier connect function to use for IrDA (IrOBEX) only.

int OBEX_CancelRequest	(	obex_t *	self,
		int	nice
	)

Cancel an ongoing operation.

Parameters

self	OBEX handle
nice	If true an OBEX Abort will be sent if beeing client or OBEX_RSP_UNAUTHORIZED as reponse if beeing server.

Returns: -1 on error

int OBEX_CharToUnicode	(	uint8_t *	uc,
		const uint8_t *	c,
		int	size
	)

Simple char to unicode function.

Parameters

uc	Destination (unicode)
c	Source (char)
size	Length of destination buffer, at least twice the size of source

Returns: -1 on error

Buffers may not overlap. Returns -1 on error.

void OBEX_Cleanup ( obex_t * self )

Close down an OBEX instance.

Parameters

self	OBEX handle

Disconnects the transport and frees the interface (see OBEX_FreeInterfaces).

int OBEX_CustomDataFeed	(	obex_t *	self,
		uint8_t *	inputbuf,
		int	actual
	)

Feed OBEX with data when using a custom transport.

Parameters

self	OBEX handle
inputbuf	Pointer to custom data
actual	Length of buffer

Returns: -1 on error

int OBEX_FindInterfaces	(	obex_t *	self,
		obex_interface_t **	interfaces
	)

Get a list of OBEX interfaces on the system.

Parameters

self	OBEX handle
interfaces	A list of OBEX interfaces

Returns: a list of OBEX interfaces, or NULL if there are none.

void OBEX_FreeInterfaces ( obex_t * self )

Free memory allocated to OBEX interface structures.

Parameters

self	OBEX handle

Frees memory allocated to OBEX interface structures after it has been allocated by OBEX_FindInterfaces.

void* OBEX_GetCustomData ( obex_t * self )

Read the customdata from an OBEX handle.

Parameters

self	OBEX handle

Returns: custom transport data, NULL on error

int OBEX_GetFD ( obex_t * self )

Get FD.

Parameters

self	OBEX handle

Returns: file descriptor of the transport, -1 on error

Returns the filedescriptor of the transport. Returns -1 on error. Note that if you for example have a custom transport, no fd is available.

The returned filehandle can be used to do select() on, before calling OBEX_HandleInput()

There is one subtelty about this function. When the OBEX connection is established, it returns the connection filedescriptor, while for an unconnected server it will return the listening filedescriptor. This mean that after receiving an incomming connection, you need to call this function again.

char* OBEX_GetResponseMessage	(	obex_t *	self,
		int	rsp
	)

Return a human understandable string from a response-code.

Parameters

self	OBEX handle
rsp	Response code.

Returns: static response code string, NULL on error

The returned char must not be freed. Returns NULL on error.

void* OBEX_GetUserData ( obex_t * self )

Read the userdata from an OBEX handle.

Parameters

self	OBEX handle

Returns: the userdata

Returns userdata set with OBEX_SetUserData.

int OBEX_HandleInput	(	obex_t *	self,
		int	timeout
	)

Let the OBEX parser do some work.

Parameters

self	OBEX handle
timeout	Maximum time to wait in seconds

Returns: -1 on error, 0 on timeout, positive on success

Let the OBEX parser read and process incoming data. If no data is available this call will block.

When a request has been sent or you are waiting for an incoming server- request you should call this function until the request has finished.

Like select() this function returns -1 on error, 0 on timeout or positive on success.

obex_t* OBEX_Init	(	int	transport,
		obex_event_t	eventcb,
		unsigned int	flags
	)

Initialize OBEX.

Parameters

transport	Which transport to use. The following transports are available : OBEX_TRANS_IRDA : Use regular IrDA socket (need an IrDA stack) OBEX_TRANS_INET : Use regular TCP/IP socket OBEX_TRANS_CUSTOM : Use user provided transport, you must register your own transport with OBEX_RegisterCTransport() OBEX_TRANS_BLUETOOTH: Use regular Bluetooth RFCOMM socket (need the BlueZ stack) OBEX_TRANS_USB: Use USB transport (libusb needed)
eventcb	Function pointer to your event callback. See obex.h for prototype of this callback.
flags	Bitmask of flags. The following flags are available : OBEX_FL_KEEPSERVER : Keep the server alive after incomming request OBEX_FL_FILTERHINT : Filter target devices based on Obex hint bit OBEX_FL_FILTERIAS : Filter target devices based on IAS entry

Returns: an OBEX handle or NULL on error.

int OBEX_InterfaceConnect	(	obex_t *	self,
		obex_interface_t *	intf
	)

Connect USB interface.

Parameters

self	OBEX handle
intf	USB interface to connect to

Returns: -1 or negative error code on error

An easier connect function to connect to a discovered interface (currently USB OBEX only).

int OBEX_ObjectAddHeader	(	obex_t *	self,
		obex_object_t *	object,
		uint8_t	hi,
		obex_headerdata_t	hv,
		uint32_t	hv_size,
		unsigned int	flags
	)

Attach a header to an object.

Parameters

self	OBEX handle
object	OBEX object
hi	Header identifier
hv	Header value
hv_size	Header size
flags	See obex.h for possible values

Returns: -1 on error

Add a new header to an object.

If you want all headers to fit in one packet, use the flag OBEX_FL_FIT_ONE_PACKET on all headers you add to an object.

To stream a body add a body header with hv.bs = NULL and set the flag OBEX_FL_STREAM_START. You will now get OBEX_EV_STREAMEMPTY events as soon as the the parser wants you to feed it with more data.

When you get an OBEX_EV_STREAMEMPTY event give the parser some data by adding a body-header and set the flag OBEX_FL_STREAM_DATA. When you have no more data to send set the flag OBEX_FL_STREAM_DATAEND instead.

After adding a header you are free to do whatever you want with the buffer if you are NOT streaming. If you are streaming you may not touch the buffer until you get another OBEX_EV_STREAMEMPTY or until the request finishes.

The headers will be sent in the order you add them.

int OBEX_ObjectDelete	(	obex_t *	self,
		obex_object_t *	object
	)

Delete an OBEX object.

Parameters

self	OBEX handle
object	object to delete.

Returns: -1 on error

Note that as soon as you have passed an object to the lib using OBEX_Request(), you shall not delete it yourself.

int OBEX_ObjectGetCommand	(	obex_t *	self,
		obex_object_t *	object
	)

Get the OBEX commmand of an object.

Parameters

self	OBEX context
object	OBEX object (or NULL to access the current object)

Returns: -1 on error

Call this function to get the OBEX command of an object.

int OBEX_ObjectGetNextHeader	(	obex_t *	self,
		obex_object_t *	object,
		uint8_t *	hi,
		obex_headerdata_t *	hv,
		uint32_t *	hv_size
	)

Get next available header from an object.

Parameters

self	OBEX handle
object	OBEX object
hi	Pointer to header identifier
hv	Pointer to hv
hv_size	Pointer to hv_size

Returns: 0 when no more headers are available, -1 on error

Returns 0 when no more headers are available.

All headers are read-only.

You will get the headers in the received order.

int OBEX_ObjectGetNonHdrData	(	obex_object_t *	object,
		uint8_t **	buffer
	)

Get any data which was before headers.

Parameters

object	OBEX object
buffer	Pointer to a pointer which will point to a read-only buffer

Returns: size of the buffer or -1 for error

obex_object_t* OBEX_ObjectNew	(	obex_t *	self,
		uint8_t	cmd
	)

Create a new OBEX Object.

Parameters

self	OBEX handle
cmd	command of object

Returns: pointer to a new OBEX Object, NULL on error

int OBEX_ObjectReadStream	(	obex_t *	self,
		obex_object_t *	object,
		const uint8_t **	buf
	)

Read data from body stream.

Parameters

self	OBEX handle
object	OBEX object
buf	A pointer to a pointer which this function will set to a buffer which shall be read (and ONLY read) after this function returns.

Returns: number of bytes in buffer, or 0 for end-of-stream, -1 on error

To recieve the body as a stream call this function with buf = NULL as soon as you get an OBEX_EV_REQHINT event.

You will now recieve OBEX_EV_STREAMAVAIL events when data is available for you. Call this function to get the data.

Note! When receiving a stream data is not buffered so if you don't call this function when you get an OBEX_EV_STREAMAVAIL event data will be lost.

int OBEX_ObjectReParseHeaders	(	obex_t *	self,
		obex_object_t *	object
	)

Allow the user to parse again the rx headers.

Parameters

self	OBEX handle
object	OBEX object

Returns: 1 on success, 0 if previous parsing not completed, -1 on error

The user must have extracted all headers from the object before calling this function (until OBEX_ObjectGetNextHeader() returns 0). Next call to OBEX_ObjectGetNextHeader() will return the first received header.

int OBEX_ObjectSetHdrOffset	(	obex_object_t *	object,
		unsigned int	offset
	)

Set headeroffset.

Parameters

object	OBEX object
offset	Desired offset

Returns: 1 on success, -1 on error

Call this function when you get a OBEX_EV_REQHINT and you know that the command has data before the headers comes. You do NOT need to use this function on Connect and SetPath, they are handled automatically.

int OBEX_ObjectSetNonHdrData	(	obex_object_t *	object,
		const uint8_t *	buffer,
		unsigned int	len
	)

Set data to send before headers.

Parameters

object	OBEX object
buffer	Data to send
len	Length to data

Returns: 1 on success, -1 on error

Some commands (notably SetPath) send data before headers. Use this function to set this data.

int OBEX_ObjectSetRsp	(	obex_object_t *	object,
		uint8_t	rsp,
		uint8_t	lastrsp
	)

Sets the response to a received request.

Parameters

object	OBEX object
rsp	Respose code in non-last packets
lastrsp	Response code in last packet

Returns: -1 on error

int OBEX_RegisterCTransport	(	obex_t *	self,
		obex_ctrans_t *	ctrans
	)

Register a custom transport.

Parameters

self	OBEX handle
ctrans	Structure with callbacks to transport operations (see obex_const.h for details)

Returns: -1 on error

Call this function directly after OBEX_Init if you are using a custom transport.

int OBEX_Request	(	obex_t *	self,
		obex_object_t *	object
	)

Start a request (as client).

Parameters

self	OBEX handle
object	Object containing request

Returns: -1 or negative error code on error

char* OBEX_ResponseToString ( int rsp )

Return a human understandable string from a response-code.

Parameters

rsp	Response code.

Returns: static response code string, NULL on error

The returned char must not be freed. Returns NULL on error.

int OBEX_ResumeRequest ( obex_t * self )

Resume transfer of an object.

Parameters

self	OBEX handle

Returns: -1 on error

obex_t* OBEX_ServerAccept	(	obex_t *	server,
		obex_event_t	eventcb,
		void *	data
	)

Accept an incoming connection.

Parameters

server	OBEX handle
eventcb	Event callback for client (use NULL for same as server)
data	Userdata for client (use NULL for same as server)

Returns: the client instance or NULL on error

Create a new OBEX instance to handle the incomming connection. The old OBEX instance will continue to listen for new connections. The two OBEX instances become totally independant from each other.

This function should be called after the library generates an OBEX_EV_ACCEPTHINT event to the user, but before the user start to pull data out of the incomming connection.

Using this function also requires that the OBEX handle was created with the OBEX_FL_KEEPSERVER flag set while calling OBEX_Init().

int OBEX_ServerRegister	(	obex_t *	self,
		struct sockaddr *	saddr,
		int	addrlen
	)

Start listening for incoming connections.

Parameters

self	OBEX handle
saddr	Local address to bind to
addrlen	Length of address

Returns: -1 on error

Bind a server socket to an Obex service. Common transport have specialised version of this function. Note : between 0.9.8 and 0.10.0, the prototype of this function changed to make it generic. If you want your code to work across new and old version of OpenObex, you may use #ifdef OBEX_MAXIMUM_MTU to test the Obex version.

void OBEX_SetCustomData	(	obex_t *	self,
		void *	data
	)

Set customdata of an OBEX handle.

Parameters

self	OBEX handle
data	Custom Transport data

Note : this call is reserved to the Custom Transport and should not be use by the user/client. It allow to update the Custom Transport data originally set via OBEX_RegisterCTransport(). The Custom Transport data (or instance handle) is used to store data relative to the specific instance (i.e. connection), such as file descriptors, offsets and others, so that the Custom Transport can manage multiple connections transparently (i.e. without a lookup table).

Jean II

int OBEX_SetTransportMTU	(	obex_t *	self,
		uint16_t	mtu_rx,
		uint16_t	mtu_tx_max
	)

Set MTU to be used for receive and transmit.

Parameters

self	OBEX handle
mtu_rx	maximum receive transport packet size
mtu_tx_max	maximum transmit transport packet size negociated

Returns: -1 or negative error code on error

Changing those values can increase the performance of the underlying transport, but will increase memory consumption and latency (especially abort latency), and may trigger bugs in buggy transport. This need to be set before establishing the connection.

void OBEX_SetUserCallBack	(	obex_t *	self,
		obex_event_t	eventcb,
		void *	data
	)

Change user callback on an OBEX handle.

Parameters

self	OBEX handle
eventcb	Function pointer to your new event callback.
data	Pointer to the new user data to pass to the new callback (optional)

void OBEX_SetUserData	(	obex_t *	self,
		void *	data
	)

Set userdata of an OBEX handle.

Parameters

self	OBEX handle
data	It's all up to you!

int OBEX_SuspendRequest	(	obex_t *	self,
		obex_object_t *	object
	)

Suspend transfer of an object.

Parameters

self	OBEX handle
object	object to suspend (NULL to suspend currently transfered object)

Returns: -1 on error

int OBEX_TransportConnect	(	obex_t *	self,
		struct sockaddr *	saddr,
		int	addrlen
	)

Try to connect to peer.

Parameters

self	OBEX handle
saddr	Address to connect to
addrlen	Length of address

Returns: -1 on error

int OBEX_TransportDisconnect ( obex_t * self )

Disconnect transport.

Parameters

self	OBEX handle

Returns: -1 on error

int OBEX_UnicodeToChar	(	uint8_t *	c,
		const uint8_t *	uc,
		int	size
	)

Simple unicode to char function.

Parameters

c	Destination (char)
uc	Source (unicode)
size	Length of destination buffer, at least half the size of source

Returns: -1 on error

Buffers may not overlap. Returns -1 on error.

int TcpOBEX_ServerRegister	(	obex_t *	self,
		struct sockaddr *	addr,
		int	addrlen
	)

Start listening for incoming TCP connections.

Parameters

self	OBEX handle
addr	Address to bind to (*:650 if NULL)
addrlen	Length of address structure

Returns: -1 on error

An easier server function to use for TCP/IP (TcpOBEX) only. It supports IPv4 (AF_INET) and IPv6 (AF_INET6). Note: INADDR_ANY will get mapped to IN6ADDR_ANY and using port 0 will select the default OBEX port.

int TcpOBEX_TransportConnect	(	obex_t *	self,
		struct sockaddr *	addr,
		int	addrlen
	)

Connect TCP transport.

Parameters

self	OBEX handle
addr	Address to connect to ([::1]:650 if NULL)
addrlen	Length of address structure

Returns: -1 on error

An easier connect function to use for TCP/IP (TcpOBEX) only. It supports IPv4 (AF_INET) and IPv6 (AF_INET6).

Macros

Typedefs

Functions

Detailed Description

Macro Definition Documentation

Typedef Documentation

Function Documentation