xref: /dragonfly/usr.sbin/sdpd/sdpd.8 (revision 25a2db75) 
1.\" $NetBSD: sdpd.8,v 1.3 2007/03/18 15:53:55 plunky Exp $
2.\" $DragonFly: src/usr.sbin/sdpd/sdpd.8,v 1.1 2008/01/06 21:51:30 hasso Exp $
3.\"
4.\" Copyright (c) 2004 Maksim Yevmenkin <m_evmenkin@yahoo.com>
5.\" All rights reserved.
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28.\" $Id: sdpd.8,v 1.2 2007/11/30 07:39:37 griffin Exp $
29.\" $FreeBSD: src/usr.sbin/bluetooth/sdpd/sdpd.8,v 1.5 2005/12/06 17:56:36 emax Exp $
30.\"
31.Dd January 13, 2004
32.Dt SDPD 8
33.Os
34.Sh NAME
35.Nm sdpd
36.Nd Bluetooth Service Discovery Protocol daemon
37.Sh SYNOPSIS
38.Nm
39.Op Fl dh
40.Op Fl c Ar path
41.Op Fl G Ar group
42.Op Fl g Ar group
43.Op Fl u Ar user
44.Sh DESCRIPTION
45The
46.Nm
47daemon keeps track of the Bluetooth services registered on the host
48and responds to Service Discovery inquiries from the remote Bluetooth devices.
49.Pp
50In order to use any service remote Bluetooth device need to send Service
51Search and Service Attribute or Service Search Attribute request over
52Bluetooth L2CAP connection on SDP PSM (0x0001).
53The
54.Nm
55daemon will try to find matching Service Record in its Service Database
56and will send appropriate response back.
57The remote device then will process the response, extract all required
58information and will make a separate connection in order to use the service.
59.Pp
60Bluetooth applications, running on the host, register services with
61the local
62.Nm
63daemon.
64Operation like service registration, service removal and service change are
65performed over the control socket.
66It is possible to query entire content of the
67.Nm
68Service Database with
69.Xr sdpquery 1
70by issuing
71.Cm browse
72command on the control socket.
73.Pp
74The command line options are as follows:
75.Bl -tag -width indent
76.It Fl d
77Do not detach from the controlling terminal.
78.It Fl c Ar path
79Specify path to the control socket.
80The default path is
81.Pa /var/run/sdp .
82.It Fl G Ar group
83Grant permission to members of the
84.Ar group
85to modify the
86.Nm
87Service Database.
88.It Fl g Ar group
89Specifies the group the
90.Nm
91should run as after it initializes.
92The value specified may be either a group name or a numeric group ID.
93This only works if
94.Nm
95was started as root.
96The default group name is
97.Dq Li _sdpd .
98.It Fl h
99Display usage message and exit.
100.It Fl u Ar user
101Specifies the user the
102.Nm
103should run as after it initializes.
104The value specified may be either a user name or a numeric user ID.
105This only works if
106.Nm
107was started as root.
108The default user name is
109.Dq Li _sdpd .
110.El
111.Sh CAVEAT
112The
113.Nm
114daemon
115will listen for incoming L2CAP connections on a wildcard BD_ADDR.
116.Pp
117In case of multiple Bluetooth devices connected to the same host it is
118possible to specify which services should be
119.Dq bound
120to which Bluetooth device.
121Such assignment should be done at service registration time.
122.Pp
123Requests to register, remove or change service can only be made via the
124control socket.
125The
126.Nm
127daemon will check the peer's credentials and will only accept the request
128when the peer is the superuser, of if the peer is a member of the group
129specified with the
130.Fl G
131option.
132.Pp
133The
134.Nm
135daemon does not check for duplicated Service Records.
136It only performs minimal checking on the service data sent in the Service
137Register request.
138It is assumed that application must obtain all required resources such
139as RFCOMM channels etc., before registering the service.
140.Sh FILES
141.Bl -tag -width ".Pa /var/run/sdp" -compact
142.It Pa /var/run/sdp
143.El
144.Sh SEE ALSO
145.Xr sdpquery 1 ,
146.Xr sdp 3
147.Sh HISTORY
148The
149.Nm
150daemon first appeared in
151.Fx 5.3
152and was imported into
153.Nx 4.0
154by
155.An Iain Hibbert
156under the sponsorship of
157.An Itronix, Inc.
158It was imported into
159.Dx 1.11 .
160.Sh AUTHORS
161.An Maksim Yevmenkin Aq m_evmenkin@yahoo.com
162.Sh BUGS
163Most likely.
164Please report if found.
165