bthcid(8)
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BTHCID(8) NetBSD System Manager's Manual BTHCID(8)
NAME
bthcid -- Bluetooth Link Key/PIN Code Manager
SYNOPSIS
bthcid [-fn] [-d device] [-m mode] [-s socket_name]
bthcid [-h]
DESCRIPTION
The bthcid daemon handles Link Key and PIN code requests for Bluetooth
devices. It opens a raw HCI socket and listens for the following HCI
events.
Link_Key_Request
bthcid scans the /var/db/bthcid.keys file for a cached link key
matching the remote device BD_ADDR and, if found, the
Link_Key_Request_Reply will be sent back to the device, otherwise
the Link_Key_Request_Negative_Reply will be sent.
Link_Key_Notification
When a new link key is created by the device, it will be cached for
future use in the /var/db/bthcid.keys link keys file, which will be
created if it does not already exist.
PIN_Code_Request
The bthcid daemon checks its PIN cache for a matching remote device
entry. If no PIN is found, the bthcid daemon will send a message
to any PIN clients that have registered, with the device details
and a timeout value. When no clients are available or the timeout
has expired, bthcid will send a PIN_Code_Request_Negative_Reply
back to the device. When a PIN is found, or if a client responds
within the timeout period, a PIN_Code_Request_Reply will be sent
back to the device.
PINs received from clients will be cached for 5 minutes until used,
and may be added to the cache prior to pairing with the btpin(1)
utility.
Some of the functionality of bthcid can be handled by the Bluetooth con-
troller directly, and cached Link Keys may be examined, deleted or moved
to device storage using the btkey(1) program.
The command line options are as follows:
-d device
Specify the local Bluetooth device address. The default is
BDADDR_ANY.
-f Run in foreground (do not detach).
-h Display usage message and exit.
-m Specify the file mode access bits for the PIN client socket. The
default is to allow readwrite access to user and group (0660).
-n Do not listen for PIN clients.
-s socket_name
Specify the socket name to listen on for PIN clients. The default
path is /var/run/bthcid.
FILES
/var/db/bthcid.keys
/var/run/bthcid
/var/run/bthcid.pid
SEE ALSO
btkey(1), btpin(1), bluetooth(4), btconfig(8)
HISTORY
The bthcid daemon first appeared in FreeBSD 5.3 as hcsecd. It was ported
to NetBSD 4.0 with its present name and extended to support PIN clients
by Iain Hibbert under the sponsorship of Itronix, Inc.
AUTHORS
Maksim Yevmenkin <m_evmenkin@yahoo.com>
Iain Hibbert
NetBSD 8.0 September 29, 2006 NetBSD 8.0
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