[Bluez-users] bizzare result when getting the bluetooth address

[Bluez-users] bizzare result when getting the bluetooth address

[jan d tux]

Good day to all.

Can anybody help me figure out why the bluetooth address I am getting is
not right?

What I am trying to do is get the bluetooth address of the sender/peer
to my obex server.

Here are the obex calls I made:
--------
	handle = OBEX_Init(OBEX_TRANS_BLUETOOTH, obex_event, 0);

	BtOBEX_ServerRegister(handle, NULL, OBEX_PUSH_HANDLE);

	btobex_accept(handle);

	OBEX_HandleInput(handle, 1);

	//get addresss
	
	fd = OBEX_GetFD(handle);
	if( fd < 0 )
		return 0;

	getpeername(fd,(struct sockaddr *)&sa,&len)
		return 0;

	baswap(&bdaddr, &sa.rc_bdaddr);
	printf("\tADDRESS: %s\n", batostr(&bdaddr));
--------


when i run the program, i was able to get the following:
        channel: 10	
        family: 31
        ADDRESS 2: 00:0A:00:02:EE:69 -> this is not the bluetooth
address of the sender!!! Its address is 00:02:EE:69:E1:88. The last for
digits displayed are the 1st four digits of the device's real address. I
tried it with another device and the result is the same, from the
original address (00:E0:03:74:38:8E) to 00:0A:00:E0:03:74.

Bdw, I am using openobex.

Any help would be appreciated.


Thanks :)


Also, thanks to Marcel for replying to my first email: Getting remote
device address & name using obex commands

-- 

~jan



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Re: [Bluez-users] bizzare result when getting the bluetooth address

[Marcel Holtmann]

Hi Jan,

> Can anybody help me figure out why the bluetooth address I am getting is
> not right?
> 
> What I am trying to do is get the bluetooth address of the sender/peer
> to my obex server.
> 
> Here are the obex calls I made:
> --------
> 	handle = OBEX_Init(OBEX_TRANS_BLUETOOTH, obex_event, 0);
> 
> 	BtOBEX_ServerRegister(handle, NULL, OBEX_PUSH_HANDLE);
> 
> 	btobex_accept(handle);
> 
> 	OBEX_HandleInput(handle, 1);
> 
> 	//get addresss
> 	
> 	fd = OBEX_GetFD(handle);
> 	if( fd < 0 )
> 		return 0;
> 
> 	getpeername(fd,(struct sockaddr *)&sa,&len)
> 		return 0;
> 
> 	baswap(&bdaddr, &sa.rc_bdaddr);
> 	printf("\tADDRESS: %s\n", batostr(&bdaddr));
> --------
> 
> 
> when i run the program, i was able to get the following:
>         channel: 10	
>         family: 31
>         ADDRESS 2: 00:0A:00:02:EE:69 -> this is not the bluetooth
> address of the sender!!! Its address is 00:02:EE:69:E1:88. The last for
> digits displayed are the 1st four digits of the device's real address. I
> tried it with another device and the result is the same, from the
> original address (00:E0:03:74:38:8E) to 00:0A:00:E0:03:74.

insert a "len = sizeof(sa)" before you call getpeername().

Regards

Marcel




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Re: [Bluez-users] bizzare result when getting the bluetooth address

[jan d tux]

Thanks Marcel.

I have already inserted a len=sizeof(sa) before calling getpeername but
the result is still the same.

On Mon, 2004-02-02 at 19:55, Marcel Holtmann wrote:
> Hi Jan,
> 
> > Can anybody help me figure out why the bluetooth address I am getting is
> > not right?
> > 
> > What I am trying to do is get the bluetooth address of the sender/peer
> > to my obex server.
> > 
> > Here are the obex calls I made:
> > --------
> > 	handle = OBEX_Init(OBEX_TRANS_BLUETOOTH, obex_event, 0);
> > 
> > 	BtOBEX_ServerRegister(handle, NULL, OBEX_PUSH_HANDLE);
> > 
> > 	btobex_accept(handle);
> > 
> > 	OBEX_HandleInput(handle, 1);
> > 
> > 	//get addresss
> > 	
> > 	fd = OBEX_GetFD(handle);
> > 	if( fd < 0 )
> > 		return 0;
> > 
> > 	getpeername(fd,(struct sockaddr *)&sa,&len)
> > 		return 0;
> > 
> > 	baswap(&bdaddr, &sa.rc_bdaddr);
> > 	printf("\tADDRESS: %s\n", batostr(&bdaddr));
> > --------
> > 
> > 
> > when i run the program, i was able to get the following:
> >         channel: 10	
> >         family: 31
> >         ADDRESS 2: 00:0A:00:02:EE:69 -> this is not the bluetooth
> > address of the sender!!! Its address is 00:02:EE:69:E1:88. The last for
> > digits displayed are the 1st four digits of the device's real address. I
> > tried it with another device and the result is the same, from the
> > original address (00:E0:03:74:38:8E) to 00:0A:00:E0:03:74.
> 
> insert a "len = sizeof(sa)" before you call getpeername().
> 
> Regards
> 
> Marcel
> 

Re: [Bluez-users] bizzare result when getting the bluetooth address

[Marcel Holtmann]

Hi Jan,

> I have already inserted a len=sizeof(sa) before calling getpeername but
> the result is still the same.

show us the complete code.

Regards

Marcel




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Re: [Bluez-users] bizzare result when getting the bluetooth address

[jan d tux]

Hi to all :)

Here is the complete code of the server I am working on. The server code
is from http://www.frasunek.com/sources/unix/obexserver.c.



/* Simple OpenOBEX server for Bluez+OpenOBEX */
/* link with libmisc.a from OPENObex-apps and libopenobex from OpenOBEX
*/
/* venglin@freebsd.lublin.pl */


#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

#include <openobex/obex.h>
#include "obex_io.c"
#include "obex_put_common.c"
#include <bluetooth/rfcomm.h>

#define OBEX_PUSH_HANDLE	10

volatile int finished = 0;
obex_t *handle = NULL;

int Get_handle_bdaddr(obex_t *handle, char *str);
void obex_event(obex_t *handle, obex_object_t *object, int mode, int
event, int obex_cmd, int obex_rsp);

int main(int argc, char **argv)
{

	char str[256];
	int get;

	obex_object_t *object;

	handle = OBEX_Init(OBEX_TRANS_BLUETOOTH, obex_event, 0);

	if (argc == 1)
	{
		BtOBEX_ServerRegister(handle, NULL, OBEX_PUSH_HANDLE);
		printf("Waiting for connection...\n");
		btobex_accept(handle);

		while (!finished)
		{
			OBEX_HandleInput(handle, 1);
		}

		get=get_bdaddr(handle,str);
	}
}

/*
*	int get_bdaddr(obex_t *handle, char *str)
*   	I've added this function
*
*/
int get_bdaddr(obex_t *handle, char *str)
{
	int			fd;
	struct	sockaddr_rc	sa;
	socklen_t		len = sizeof(sa);


	if( (fd = OBEX_GetFD(handle)) < 0 )
		return 0;

	if( getpeername(fd,(struct sockaddr *)&sa,&len) < 0 )
		return 0;

	ba2str(&sa.rc_bdaddr,str);
	printf("\n\tADDRESS: %s\n", str);
	printf("\tchannel: %d\n", sa.rc_channel);
	printf("\tfamily: %d\n", sa.rc_family);

	return 1;
}


------------

I saved it inside the openobex-apps/src folder and compiled it using 
	gcc -o obexserver_temp obexserver_temp.c -lopenobex -lbluetooth



Thanks :)


On Tue, 2004-02-03 at 19:30, Marcel Holtmann wrote:
> Hi Jan,
> 
> > I have already inserted a len=sizeof(sa) before calling getpeername but
> > the result is still the same.
> 
> show us the complete code.
> 
> Regards
> 
> Marcel
> 




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