[Bluez-devel] Testing l2cap using l2test for authentication/encryption

[Bluez-devel] Testing l2cap using l2test for authentication/encryption

[Bhatt Abhi-ABHATT]

Hello, 

I am trying to use l2test program to test authentication/encryption using 
two bluetooth devices running bluez. However, my client keeps on timing out with the message "l2test[612]: Can't connect. Connection refused(111)"
l2test works fine without authentication/encryption requested.

I am running 2.4.20-8 kernel with the mh12 patch. 

I am running hcid and hcid.conf looks like this on both ends. 
except for the class of device on the server is set to 0xffff.
options {
        autoinit yes;
        security auto;
        pairing multi;
        pin_helper /etc/bluetooth/outgoingpin.sh
}

# Default settings for HCI devices
device {
        name "BlueZ (%d)";
        class 0x100;
        iscan enable; pscan enable;
        lm accept;
	  lp rswitch,hold,sniff,park;
        auth enable;
        encrypt enable;
}

outgoingpin.sh 
#!/bin/sh
# Outgoing pin
echo "PIN:00000"

/etc/bluetooth/pin on both sides is set to 00000.

hcidump: CLIENT
client# ./l2test_client -s -b 10 -N 2 xx:xx:xx:xx:xx:xx
HCIDump - HCI packet analyzer ver 1.11
device: hci0 snap_len: 1028 filter: 0xffffffff
< HCI Command: Create Connection (0x01|0x0005) plen 13
> HCI Event: Command Status (0x0f) plen 4
> HCI Event: Connect Complete (0x03) plen 11
< ACL data: handle 0x0006 flags 0x02 dlen 12
    L2CAP(s): Connect req: psm 10 scid 0x0040
< HCI Command: Write Link Policy Settings (0x02|0x000d) plen 4
> HCI Event: Command Complete (0x0e) plen 6
> HCI Event: Number of Completed Packets (0x13) plen 5
> HCI Event: Max Slots Change (0x1b) plen 3
> ACL data: handle 0x0006 flags 0x02 dlen 16
    L2CAP(s): Connect rsp: dcid 0x0040 scid 0x0040 result 1 status 1
> ACL data: handle 0x0006 flags 0x02 dlen 16
    L2CAP(s): Connect rsp: dcid 0x0040 scid 0x0040 result 3 status 0
< HCI Command: Disconnect (0x01|0x0006) plen 3
> HCI Event: Command Status (0x0f) plen 4
> HCI Event: Disconn Complete (0x05) plen 4

hcidump: SERVER
server# ./l2test_server -r -A
HCIDump - HCI packet analyzer ver 1.5
device: hci0 snap_len: 1028 filter: 0xffffffff
> HCI Event: Connect Request(0x04) plen 10
< HCI Command: Accept Connection Request(0x01|0x0009) plen 7
> HCI Event: Command Status(0x0f) plen 4
> HCI Event: Connect Complete(0x03) plen 11
< HCI Command: Change Connection Packet Type(0x01|0x000f) plen 4
> HCI Event: Page Scan Repetition Mode Change(0x20) plen 7
> HCI Event: Command Status(0x0f) plen 4
> HCI Event: Connection Packet Type Changed(0x1d) plen 5
> ACL data: handle 0x0029 flags 0x02 dlen 12
    L2CAP(s): Connect req: psm 10 scid 0x0040
< ACL data: handle 0x0029 flags 0x02 dlen 16
    L2CAP(s): Connect rsp: dcid 0x0040 scid 0x0040 result 1 status 1
< HCI Command: Authentication Requested(0x01|0x0011) plen 2
> HCI Event: Command Status(0x0f) plen 4
> HCI Event: Number of Completed Packets(0x13) plen 5
> HCI Event: Max Slots Change(0x1b) plen 3
> HCI Event: Link Key Request(0x17) plen 6
> HCI Event: Command Status(0x0f) plen 4
> HCI Event: Auth Complete(0x06) plen 3
< ACL data: handle 0x0029 flags 0x02 dlen 16
    L2CAP(s): Connect rsp: dcid 0x0040 scid 0x0040 result 3 status 0
> HCI Event: Number of Completed Packets(0x13) plen 5
> HCI Event: Disconn Complete(0x05) plen 4
		
Thanks for the help. 
Abhi


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Re: [Bluez-devel] Testing l2cap using l2test for authentication/encryption

[Marcel Holtmann]

Hi Abhi,

> I am trying to use l2test program to test authentication/encryption using 
> two bluetooth devices running bluez. However, my client keeps on timing out with the message "l2test[612]: Can't connect. Connection refused(111)"
> l2test works fine without authentication/encryption requested.
> 
> I am running 2.4.20-8 kernel with the mh12 patch. 
> 
> I am running hcid and hcid.conf looks like this on both ends. 
> except for the class of device on the server is set to 0xffff.
> options {
>         autoinit yes;
>         security auto;
>         pairing multi;
>         pin_helper /etc/bluetooth/outgoingpin.sh
> }
> 
> # Default settings for HCI devices
> device {
>         name "BlueZ (%d)";
>         class 0x100;
>         iscan enable; pscan enable;
>         lm accept;
> 	  lp rswitch,hold,sniff,park;
>         auth enable;
>         encrypt enable;
> }
> 

you know that this is security mode 3, do you?

> outgoingpin.sh 
> #!/bin/sh
> # Outgoing pin
> echo "PIN:00000"
> 
> /etc/bluetooth/pin on both sides is set to 00000.
> 
> hcidump: CLIENT
> client# ./l2test_client -s -b 10 -N 2 xx:xx:xx:xx:xx:xx
> HCIDump - HCI packet analyzer ver 1.11
> device: hci0 snap_len: 1028 filter: 0xffffffff
> < HCI Command: Create Connection (0x01|0x0005) plen 13
> > HCI Event: Command Status (0x0f) plen 4
> > HCI Event: Connect Complete (0x03) plen 11
> < ACL data: handle 0x0006 flags 0x02 dlen 12
>     L2CAP(s): Connect req: psm 10 scid 0x0040
> < HCI Command: Write Link Policy Settings (0x02|0x000d) plen 4
> > HCI Event: Command Complete (0x0e) plen 6
> > HCI Event: Number of Completed Packets (0x13) plen 5
> > HCI Event: Max Slots Change (0x1b) plen 3
> > ACL data: handle 0x0006 flags 0x02 dlen 16
>     L2CAP(s): Connect rsp: dcid 0x0040 scid 0x0040 result 1 status 1
> > ACL data: handle 0x0006 flags 0x02 dlen 16
>     L2CAP(s): Connect rsp: dcid 0x0040 scid 0x0040 result 3 status 0
> < HCI Command: Disconnect (0x01|0x0006) plen 3
> > HCI Event: Command Status (0x0f) plen 4
> > HCI Event: Disconn Complete (0x05) plen 4
> 
> hcidump: SERVER
> server# ./l2test_server -r -A
> HCIDump - HCI packet analyzer ver 1.5
> device: hci0 snap_len: 1028 filter: 0xffffffff
> > HCI Event: Connect Request(0x04) plen 10
> < HCI Command: Accept Connection Request(0x01|0x0009) plen 7
> > HCI Event: Command Status(0x0f) plen 4
> > HCI Event: Connect Complete(0x03) plen 11
> < HCI Command: Change Connection Packet Type(0x01|0x000f) plen 4
> > HCI Event: Page Scan Repetition Mode Change(0x20) plen 7
> > HCI Event: Command Status(0x0f) plen 4
> > HCI Event: Connection Packet Type Changed(0x1d) plen 5
> > ACL data: handle 0x0029 flags 0x02 dlen 12
>     L2CAP(s): Connect req: psm 10 scid 0x0040
> < ACL data: handle 0x0029 flags 0x02 dlen 16
>     L2CAP(s): Connect rsp: dcid 0x0040 scid 0x0040 result 1 status 1
> < HCI Command: Authentication Requested(0x01|0x0011) plen 2
> > HCI Event: Command Status(0x0f) plen 4
> > HCI Event: Number of Completed Packets(0x13) plen 5
> > HCI Event: Max Slots Change(0x1b) plen 3
> > HCI Event: Link Key Request(0x17) plen 6
> > HCI Event: Command Status(0x0f) plen 4
> > HCI Event: Auth Complete(0x06) plen 3
> < ACL data: handle 0x0029 flags 0x02 dlen 16
>     L2CAP(s): Connect rsp: dcid 0x0040 scid 0x0040 result 3 status 0
> > HCI Event: Number of Completed Packets(0x13) plen 5
> > HCI Event: Disconn Complete(0x05) plen 4

Use "hcidump -x" to see the result code of the HCI events and check if
hcid is running.

Regards

Marcel




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