setup pairing?

Hi!

I'm new in this area and I've a problem with setting up a simple key pairing mechanism for bluetooth with BlueZ.

I'd like to setup a bluetooth connection with tcp/ip between a Linux-Watch (kernel 2.4.18) and a Windows XP SP2.
My problem is, I can access the Windows host only with the help of a key pairing, because with my current windows bluetooth driver it's not possible to establish a "unsecure connection" without a keypairs.

With the Linux-Watch and the Windows computer I can search for devices and they find earch other, but the key pairing doesn't work.

I wrote a /etc/bluetooth/hcid.conf-file:

##########begin
# HCI daemon configuration file.
#
#

options {
       autoinit yes;
       security auto;
       pairing multi;
       pin_helper /etc/bluetooth/givepin;
}

###########end

and loaded this file with "/usr/local/bin/hcid -f /etc/bluetooth/hcid.conf"! "/etc/bluetooth/givepin" rights are 710 and looks like:

#####givepin######
#!/bin/sh
echo "PIN:0000"
################

But it still doesn't work - any idea?

Software:
bluez-libs-2.4.
bluez-pan-1.1
bluez-sdp-1.2
bluez-utils-2.3

Bye,
Franz

Hi Franz,

show us the output of "hcidump -x" as root while you are trying to connect.

What kind of Windows driver is this. The Windows XP SP2 Bluetooth stack allows unpaired connection as long as both devices are not in security mode 3. What does "hciconfig -a" show you?

Regards

Marcel

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Hi Marcel,

thanks for your response!

#./hciconfig -a
hci0: Type: UART

       BD Address: 00:60:57:01:10:AE ACL MTU: 384:80  SCO MTU: 128:80
       UP RUNNING PSCAN ISCAN
       RX bytes:172 acl:0 sco:0 events:17 errors:0
       TX bytes:80 acl:0 sco:0 commands:17 errors:0
       Features: 0xff 0xff 0x09 0x00
       Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3
       Link policy:
       Link mode: SLAVE ACCEPT
       Name: 'WatchPad_15'
       Class: 0x000000
       Service Classes: Unspecified
       Device Class: Miscellaneous,
       HCI Ver: 1.1 (0x1) HCI Rev: 0xbc LMP Ver: 1.1 (0x1) LMP Subver: 0xbc
       Manufacturer: Cambridge Silicon Radio (10)

#

Problem is now, that I don't have ./hcidump cause of memory problems on this watch.
/usr/local/bin only inlcudes the following files.

# ls -la
drwxr-xr-x    1 root     root            0 Nov 10 03:32 .
drwxr-xr-x    1 root     root            0 Nov 10 03:13 ..
-rwxr-xr-x    1 root     root        19064 Nov 10 03:13 dund
-rwx------    1 root     root          321 Nov 10 03:13 end
-rwxr-xr-x    1 root     root        15068 Nov 10 03:13 hciattach
-rwxr-xr-x    1 root     root        22636 Nov 10 03:13 hciconfig
-rwxr-xr-x    1 root     root        33220 Nov 10 03:13 hcid
-rwxr-xr-x    1 root     root        20452 Nov 10 03:13 hcitool
-rwxr-xr-x    1 root     root          507 Nov 10 03:13 keep_bluez
-rwxr-xr-x    1 root     root         7408 Nov 10 03:13 l2ping
-rwxr-xr-x    1 root     root        19008 Nov 10 03:13 pand
-rwxr-xr-x    1 root     root         3300 Nov 10 03:13 pantest
-rwxr-xr-x    1 root     root         6516 Nov 10 03:13 ppporc
-rwxr-xr-x    1 root     root        25440 Nov 10 03:13 rfcomm
-rwxr-xr-x    1 root     root        35036 Nov 10 03:13 sdpd
-rwxr-xr-x    1 root     root       117939 Nov 10 03:13 sdptool
-rwx------    1 root     root          350 Nov 10 03:13 start

I'm able to scan and l2ping to the windows xp computer!
On the windows computer I use a "D-Link DBT-120 B.4" usb bluetooth stick with a D-Link driver (version 1.4.2.8 from the 1.4.2.10 package), cause the original one from XP SP2 doesn't work with tihs dongle :-(

Franz

Hi Franz,

I assume that this is a problem with the PIN-helper. Check your logfiles and install hcidump. You really need it to debug this stuff.

Regards

Marcel

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