obex.c

这是Linux环境下的openobex

	if (self->tx_msg == NULL)
		goto out_err;

	/* Now, that's the interesting bit !
	 * We split the sockets apart, one for each instance */
	self->fd = server->fd;
	self->serverfd = -1;
	self->writefd = -1;
	server->fd = -1;
        self->state = MODE_SRV | STATE_IDLE;

	return self;

out_err:
	if (self->tx_msg != NULL)
		g_netbuf_free(self->tx_msg);
	if (self->rx_msg != NULL)
		g_netbuf_free(self->rx_msg);
	free(self);
	return NULL;
}


/**
 * OBEX_HandleInput - Let the OBEX parser do some work
 * @self: OBEX handle
 * @timeout: Maximum time to wait in seconds
 *
 * 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.
 */
int OBEX_HandleInput(obex_t *self, int timeout)
{
	DEBUG(4, "\n");
	obex_return_val_if_fail(self != NULL, -1);
	return obex_transport_handle_input(self, timeout);
}


/**
 * OBEX_CustomDataFeed - Feed OBEX with data when using a custom transport
 * @self: OBEX handle
 * @inputbuf: Pointer to custom data
 * @actual: Length of buffer
 */
int OBEX_CustomDataFeed(obex_t *self, uint8_t *inputbuf, int actual)
{
	DEBUG(3, "\n");

	obex_return_val_if_fail(self != NULL, -1);
	obex_return_val_if_fail(inputbuf != NULL, -1);

	return obex_data_indication(self, inputbuf, actual);
}


/**
 * OBEX_TransportConnect - Try to connect to peer
 * @self: OBEX handle
 * @saddr: Address to connect to
 * @addrlen: Length of address
 *
 * Returns -1 on error.
 */
int OBEX_TransportConnect(obex_t *self, struct sockaddr *saddr, int addrlen)
{
	DEBUG(4, "\n");

	obex_return_val_if_fail(self != NULL, -1);
	obex_return_val_if_fail((addrlen == 0) || (saddr != NULL), -1);

	memcpy(&self->trans.peer, saddr, addrlen);

	return obex_transport_connect_request(self);
}


/**
 * OBEX_TransportDisconnect - Disconnect transport
 * @self: OBEX handle
 */
int OBEX_TransportDisconnect(obex_t *self)
{
	DEBUG(4, "\n");

	obex_return_val_if_fail(self != NULL, -1);
	obex_transport_disconnect_request(self);
	return 0;
}


/**
 * OBEX_GetFD - Get FD
 * @self: OBEX handle
 *
 * 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.
 */
int OBEX_GetFD(obex_t *self)
{
	obex_return_val_if_fail(self != NULL, -1);
	if(self->fd == -1)
		return self->serverfd;
	return self->fd;
}

/**
 * OBEX_Request - Start a request (as client)
 * @self: OBEX handle
 * @object: Object containing request
 *
 * Returns negative on error.
 */
int OBEX_Request(obex_t *self, obex_object_t *object)
{
	DEBUG(4, "\n");

	obex_return_val_if_fail(self != NULL, -1);

	if (self->object)	{
		DEBUG(1, "We are busy.\n");
		return -EBUSY;
	}

	obex_return_val_if_fail(object != NULL, -1);

	self->object = object;
        self->state = STATE_START | MODE_CLI;
	
	return obex_client(self, NULL, 0);
}


/**
 * OBEX_CancelRequest - Cancel an ongoing operation
 * @self: OBEX handle
 * @nice: If true an OBEX Abort will be sent if beeing client
 *        or OBEX_RSP_UNAUTHORIZED as reponse if beeing server.
 *
 *
 */
int OBEX_CancelRequest(obex_t *self, int nice)
{
	obex_return_val_if_fail(self != NULL, -1);
	return obex_cancelrequest(self, nice);
}

/**
 * OBEX_SuspendRequest - Suspend transfer of an object
 * @self: OBEX handle
 * @object: object to suspend (NULL to suspend currently transfered object)
 */
int OBEX_SuspendRequest(obex_t *self, obex_object_t *object)
{
	obex_return_val_if_fail(object != NULL || self->object != NULL, -1);
	return obex_object_suspend(object ? object : self->object);
}

/**
 * OBEX_ResumeRequest - Resume transfer of an object
 * @self: OBEX handle
 */
int OBEX_ResumeRequest(obex_t *self)
{
	obex_return_val_if_fail(self->object != NULL, -1);
	return obex_object_resume(self, self->object);
}

/**
 * OBEX_ObjectNew - Create a new OBEX Object
 * @self: OBEX handle
 * @cmd: command of object
 *
 * Returns a pointer to a new OBEX Object or %NULL on error.
 */
obex_object_t *OBEX_ObjectNew(obex_t *self, uint8_t cmd)
{
	obex_object_t *object;

	obex_return_val_if_fail(self != NULL, NULL);

	object = obex_object_new();
	if(object == NULL)
		return NULL;

	obex_object_setcmd(object, cmd, (uint8_t) (cmd | OBEX_FINAL));
	/* Need some special woodoo magic on connect-frame */
	if(cmd == OBEX_CMD_CONNECT)	{
		if(obex_insert_connectframe(self, object) < 0)	{
			obex_object_delete(object);
			object = NULL;
		}
	}

	return object;
}

/**
 * OBEX_ObjectDelete - Delete an OBEX object
 * @self: OBEX handle
 * @object: object to delete.
 *
 * Note that as soon as you have passed an object to the lib using
 * OBEX_Request(), you shall not delete it yourself.
 */
int OBEX_ObjectDelete(obex_t *self, obex_object_t *object)
{
	obex_return_val_if_fail(object != NULL, -1);
	return obex_object_delete(object);
}


/**
 * OBEX_ObjectAddHeader - Attach a header to an object
 * @self: OBEX handle
 * @object: OBEX object
 * @hi: Header identifier
 * @hv: Header value
 * @hv_size: Header size
 * @flags: See obex.h for possible values
 *
 * 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_EV_STREAM_DATA. When you
 * have no more data to send set the flag %OBEX_EV_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_STREAMEMTPY or until the request
 * finishes.
 *
 * The headers will be sent in the order you add them.
 */
int OBEX_ObjectAddHeader(obex_t *self, obex_object_t *object, uint8_t hi,
				obex_headerdata_t hv, uint32_t hv_size,
				unsigned int flags)
{
	obex_return_val_if_fail(self != NULL, -1);
	obex_return_val_if_fail(object != NULL, -1);
	return obex_object_addheader(self, object, hi, hv, hv_size, flags);
}


/**
 * OBEX_ObjectGetNextHeader - Get next available header from an object
 * @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.
 *
 * All headers are read-only.
 *
 * You will get the headers in the received order.
 */
int OBEX_ObjectGetNextHeader(obex_t *self, obex_object_t *object, uint8_t *hi,
					obex_headerdata_t *hv,
					uint32_t *hv_size)
{
	obex_return_val_if_fail(self != NULL, -1);
	obex_return_val_if_fail(object != NULL, -1);
	return obex_object_getnextheader(self, object, hi, hv, hv_size);
}

/**
 * OBEX_ObjectReParseHeaders - Allow the user to parse again the rx headers
 * @self: OBEX handle
 * @object: OBEX object
 *
 * 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.
 *
 * Returns 1 on success
 * Returns 0 if failed due previous parsing not completed.
 */
int OBEX_ObjectReParseHeaders(obex_t *self, obex_object_t *object)
{
	obex_return_val_if_fail(self != NULL, -1);
	obex_return_val_if_fail(object != NULL, -1);
	return obex_object_reparseheaders(self, object);
}

/**
 * OBEX_ObjectReadStream - Read data from body stream
 * @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.
 *
 * 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.
 *
 * Returns the number of bytes in buffer, or 0 for end-of-stream.
 */
int OBEX_ObjectReadStream(obex_t *self, obex_object_t *object, const uint8_t **buf)
{
	obex_return_val_if_fail(self != NULL, -1);
	obex_return_val_if_fail(object != NULL, -1);
	return obex_object_readstream(self, object, buf);
}


/**
 * OBEX_ObjectSetRsp - Sets the response to a received request.
 * @self: OBEX handle
 * @object: OBEX object
 * @rsp: Respose code in non-last packets
 * @lastrsp: Response code in last packet
 *
 * Returns -1 on error.
 */
int OBEX_ObjectSetRsp(obex_object_t *object, uint8_t rsp, uint8_t lastrsp)
{
	obex_return_val_if_fail(object != NULL, -1);
	return obex_object_setrsp(object, rsp, lastrsp);
}

/**
 * OBEX_ObjectGetNonHdrData - Get any data which was before headers
 * @object: OBEX object
 * @buffer: Pointer to a pointer which will point to a read-only buffer
 *
 * Returns the size of the buffer or -1 for error.
 */
int OBEX_ObjectGetNonHdrData(obex_object_t *object, uint8_t **buffer)
{
	obex_return_val_if_fail(object != NULL, -1);
	if(!object->rx_nonhdr_data)
		return 0;

	*buffer = object->rx_nonhdr_data->data;
	return object->rx_nonhdr_data->len;
}

/**
 * OBEX_ObjectSetNonHdrData - Set data to send before headers
 * @object: OBEX object
 * @buffer: Data to send
 * @len: Length to data
 *
 * Some commands (notably SetPath) send data before headers. Use this
 * function to set this data.
 */
int OBEX_ObjectSetNonHdrData(obex_object_t *object, const uint8_t *buffer, unsigned int len)
{
	//TODO: Check that we actually can send len bytes without violating MTU

	obex_return_val_if_fail(object != NULL, -1);
	obex_return_val_if_fail(buffer != NULL, -1);

	if(object->tx_nonhdr_data)
		return -1;

	object->tx_nonhdr_data = g_netbuf_new(len);
	if(object->tx_nonhdr_data == NULL)
		return -1;

	g_netbuf_put_data(object->tx_nonhdr_data, (uint8_t *)buffer, len);