svnserve tunnel-mode setuid/setgid wrapper (for Subversion)
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.
svnstsw-1.4.tar.gz, released 2008-04-18
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