d1c004f7d1
register, remove or change services in the local database. For now only accept the request if the peer has effective user ID the same as 'root' user ID. MFC after: 1 week
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 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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