2022-09-16 20:15:46

by Jake Rue

Subject: How does btmon know that type 9 is "Apple TV"?

In an advertisement like this:

> HCI Event: LE Meta Event (0x3e) plen 27 #86 [hci0] 44.156857
LE Advertising Report (0x02)
Num reports: 1
Event type: Non connectable undirected - ADV_NONCONN_IND (0x03)
Address type: Random (0x01)
Address: 0D:07:B9:9A:33:0F (Non-Resolvable)
Data length: 15
Flags: 0x1a
LE General Discoverable Mode
Simultaneous LE and BR/EDR (Controller)
Simultaneous LE and BR/EDR (Host)
Company: Apple, Inc. (76)
Type: Apple TV (9)
Data: 0376c0a801f5
RSSI: -80 dBm (0xb0)

Where does the mapping of Type 9 to "Apple TV" come from in the code?
When I search the bluez github repository for "Apple TV"
(https://github.com/bluez/bluez/search?q=%22Apple+TV%22), I don't get
any hits. (In contrast I can find the switch statement that encodes 76
== "Apple, Inc." fine.) I'd like to see what table encodes that
information so I can use it in my code as well (and what all it knows
about other types.)

- Thank You
Jake Rue

2022-09-16 20:28:22

by Luiz Augusto von Dentz

Subject: Re: How does btmon know that type 9 is "Apple TV"?

Hi Jake,

On Fri, Sep 16, 2022 at 1:15 PM Jake Rue <[email protected]> wrote:
>
> In an advertisement like this:
>
> > HCI Event: LE Meta Event (0x3e) plen 27 #86 [hci0] 44.156857
> LE Advertising Report (0x02)
> Num reports: 1
> Event type: Non connectable undirected - ADV_NONCONN_IND (0x03)
> Address type: Random (0x01)
> Address: 0D:07:B9:9A:33:0F (Non-Resolvable)
> Data length: 15
> Flags: 0x1a
> LE General Discoverable Mode
> Simultaneous LE and BR/EDR (Controller)
> Simultaneous LE and BR/EDR (Host)
> Company: Apple, Inc. (76)
> Type: Apple TV (9)
> Data: 0376c0a801f5
> RSSI: -80 dBm (0xb0)
>
> Where does the mapping of Type 9 to "Apple TV" come from in the code?
> When I search the bluez github repository for "Apple TV"
> (https://github.com/bluez/bluez/search?q=%22Apple+TV%22), I don't get
> any hits. (In contrast I can find the switch statement that encodes 76
> == "Apple, Inc." fine.) I'd like to see what table encodes that
> information so I can use it in my code as well (and what all it knows
> about other types.)

git grep "Apple TV"
monitor/packet.c: str = "Apple TV";



--
Luiz Augusto von Dentz