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.TH @PACKAGE@ 8 "2008-04-18" "version @PACKAGE_VERSION@" Subversion
.SH NAME
@PACKAGE@ \- 
.BR svns "erve " t "unnel-mode " s "etuid " w rapper
.SH SYNOPSIS
.B @PACKAGE@
[
.I options\c
\&.\|.\|.\& ]
.SH DESCRIPTION
Runs Subversion's
.B svnserve
program in tunnel mode, setting the tunnel username equal to the
username of the user that invoked
.BR @PACKAGE@ .

Using this wrapper, repository administrators can have meaningful
path-based access controls when using the svn+ssh access scheme
without resorting to the authorized_keys trick.  Normally, the svn+ssh
scheme requires the repository administrator to make all repository
files fully readable and writeable by all users.  Unfortunately, this
configuration allows users to easily bypass
.BR svnserve 's
access controls.  With
.B svnstsw
installed and the setuid or setgid bit set, repository administrators
can take direct filesystem access away from users and prevent them
from bypassing
.BR svnserve 's
access controls.

This wrapper works by executing (via
.BR exec (3))
.B svnserve
with the
.B \-\-tunnel
and
.BI \-\-tunnel\-user= user
arguments, where
.I user
is the username of the user that invoked
.B svnstsw
(as determined using either
.BR getlogin_r (3)
or
.BR getpwuid_r (3)
with
.BR getuid (3)).

The specific
.B svnserve
executable to run is set at compile time and can be verified using the
.B \-\-help
command-line argument.

The
.B \-\-root=\c
.I path
command-line argument is also passed to
.B svnserve\c
, with the value of
.I path
set at compile time.  The value of
.I path
can be verified using the
.B \-\-help
command-line argument.  Depending on compile-time settings,
.I path
may be overridden using the
.B \-r
or
.B \-\-root
command-line arguments; see
.B \-\-help
for more details.

This wrapper was written for Subversion 1.4.
.SH OPTIONS
.TP
.BR \-h , \ \-\-help
Display a command-line usage summary along with the specific
.B svnserve
binary to execute and the (default) virtual repository root path.
.TP
.BI \-r " path\fR,\fP " \-\-root= path
Use
.I path
as the argument to
.B svnserve\c
\&'s
.B --root
command-line argument instead of the compiled-in default.  This option
is ignored if root overriding was disabled at compile time.  To see
the default
.I path\c
, use the
.B \-\-help
option.
.TP
.BR \-R , \ \-\-read\-only
Instructs this wrapper to also pass the
.B \-\-read\-only
command-line argument to
.B svnserve\c
\&.
.TP
.BR \-t , \ \-\-tunnel
Ignored.
.TP
.BI \-\-tunnel-user= user
Ignored.
.TP
.BR \-\-version
Display version and copyright information.
.SH SEE ALSO
.BR svnserve "(8), " lib@PACKAGE@ (3)
.SH AUTHOR
Richard Hansen <svnstsw@ir.bbn.com>
.SH COPYING
Copyright (c) 2008 BBN Technologies Corp.  All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
.RS 0
.IP 1. 4
Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
.IP 2. 4
Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
.IP 3. 4
Neither the name of BBN Technologies nor the names of its contributors
may be used to endorse or promote products derived from this software
without specific prior written permission.
.RE

THIS SOFTWARE IS PROVIDED BY BBN TECHNOLOGIES AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL BBN TECHNOLOGIES OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.