141 lines
4.3 KiB
Groff
141 lines
4.3 KiB
Groff
.\" Copyright (c) 2004 Maksim Yevmenkin <m_evmenkin@yahoo.com>
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $Id: sdpd.8,v 1.1 2004/01/13 19:31:54 max Exp $
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.\" $FreeBSD$
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.\"
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.Dd January 13, 2004
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.Dt SDPD 8
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.Os
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.Sh NAME
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.Nm sdpd
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.Nd Bluetooth Service Discovery Protocol daemon
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.Sh SYNOPSIS
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.Nm
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.Op Fl dh
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.Op Fl c Ar path
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.Op Fl g Ar group
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.Op Fl u Ar user
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.Sh DESCRIPTION
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The
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.Nm
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daemon keeps track of the Bluetooth services registered on the host
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and responds to Service Discovery inquiries from the remote Bluetooth devices.
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.Pp
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In order to use any service remote Bluetooth device need to send Service
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Search and Service Attribute or Service Search Attribute request over
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Bluetooth L2CAP connection on SDP PSM (0x0001).
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The
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.Nm
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daemon will try to find matching Service Record in its Service Database
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and will send appropriate response back.
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The remote device then will process the response, extract all required
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information and will make a separate connection in order to use the service.
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.Pp
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Bluetooth applications, running on the host, register services with
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the local
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.Nm
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daemon.
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Operation like service registration, service removal and service change are
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performed over the control socket.
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It is possible to query entire content of the
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.Nm
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Service Database with
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.Xr sdpcontrol 8
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by issuing
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.Cm browse
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command on the control socket.
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.Pp
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The command line options are as follows:
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.Bl -tag -width indent
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.It Fl d
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Do not detach from the controlling terminal.
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.It Fl c Ar path
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Specify path to the control socket.
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The default path is
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.Pa /var/run/sdp .
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.It Fl g Ar group
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Specifies the group the
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.Nm
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should run as after it initializes.
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The value specified may be either a group name or a numeric group ID.
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This only works if
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.Nm
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was started as root.
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The default group name is
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.Dq Li nobody .
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.It Fl h
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Display usage message and exit.
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.It Fl u Ar user
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Specifies the user the
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.Nm
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should run as after it initializes.
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The value specified may be either a user name or a numeric user ID.
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This only works if
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.Nm
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was started as root.
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The default user name is
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.Dq Li nobody .
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.El
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.Sh CAVEAT
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The
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.Nm
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daemon
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will listen for incoming L2CAP connections on a wildcard BD_ADDR.
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.Pp
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In case of multiple Bluetooth devices connected to the same host it is
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possible to specify which services should be
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.Dq bound
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to which Bluetooth device.
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Such assignment should be done at service registration time.
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.Pp
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Requests to register, remove or change service can only be made via the
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control socket.
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The
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.Nm
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daemon will check peer's credentials and will only accept the request if
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the application has the same effective user ID as the
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.Dq Li root
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user ID.
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.Pp
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The
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.Nm
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daemon does not check for duplicated Service Records.
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It only performs minimal checking on the service data sent in the Service
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Register request.
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It is assumed that application must obtain all required resources such
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as RFCOMM channels etc., before registering the service.
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.Sh FILES
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.Bl -tag -width ".Pa /var/run/sdp" -compact
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.It Pa /var/run/sdp
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.El
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.Sh SEE ALSO
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.Xr sdp 3 ,
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.Xr sdpcontrol 8
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.Sh AUTHORS
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.An Maksim Yevmenkin Aq Mt m_evmenkin@yahoo.com
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.Sh BUGS
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Most likely.
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Please report if found.
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