svnstsw

svnserve tunnel-mode setuid/setgid wrapper (for Subversion)

About

svnstsw runs Subversion's svnserve program in tunnel mode, setting the tunnel username equal to the username of the user that invoked svnstsw.

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 svnserve's access controls. With svnstsw installed and the setuid or setgid bit set, repository administrators can take direct filesystem access away from users and prevent them from bypassing svnserve's access controls.

This wrapper works by exec()ing svnserve with the --tunnel and --tunnel-user=user arguments, where user is the username of the user that invoked svnstsw (as determined using either getlogin_r() or getpwuid_r() with getuid()).

This wrapper was written for Subversion 1.4.

Download

svnstsw-1.4.tar.gz, released 2008-04-18

Documentation

Changes

Author

Richard Hansen <svnstsw@ir.bbn.com>

Copying

Copyright © 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:

  1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
  2. 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.
  3. 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.

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.