rsync - Mar 2009 - DO NOT REPLY [Bug 6191] New: rsyncd path does not support environmental variables

https://bugzilla.samba.org/show_bug.cgi?id=6191

           Summary: rsyncd path does not support environmental variables
           Product: rsync
           Version: 2.6.9
          Platform: x86
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P3
         Component: core
        AssignedTo: wayned@samba.org
        ReportedBy: jerome@6251100.com
         QAContact: rsync-qa@samba.org


I need to have a module that saves the files to ~/backup, and the rsync
complains that the path does not exist for ~/backup, $HOME/backup, and for
/home/$USER/backup. The error is chdir failed, no such directory.


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https://bugzilla.samba.org/show_bug.cgi?id=6191


matt@mattmccutchen.net changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|normal                      |enhancement




------- Comment #1 from matt@mattmccutchen.net  2009-03-16 17:23 CST -------
Indeed, environment variables are not recognized in the module path; that would
be an enhancement.

This is being discussed on the list:
http://lists.samba.org/archive/rsync/2009-March/022903.html


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https://bugzilla.samba.org/show_bug.cgi?id=6191


wayned at samba.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED




------- Comment #2 from wayned at samba.org  2009-10-20 22:32 CST -------
The git repository now supports the expansion of environment variables using
%VAR% references.  I chose this idiom because I thought it would be less likely
to have backward-compatibility issues, and it also stays with the DOS/Win style
of the config file.

You can reference environment variables in the values of settings only, which
does not include module names or parameter names.  All string values are
evaluated late so that they can include the variables listed in the manpage
section describing the pre-xfer exec scripts.  Values that are not strings
(such as "use chroot = BOOL") are expanded at config-reading time so
that the
parameter can be set with the appropriate value type.

So, to get the authenticating user into a path as you requested (and indeed,
even into a uid setting) you can do things like this:

[per-user-module]
    path = /home/%RSYNC_USER_NAME%
    uid = %RSYNC_USER_NAME%
    gid = *
    auth users = sally susan sam steve

One thing you can't do is this:

secrets file = /home/%RSYNC_USER_NAME%/.rsync-secret

That's because the needed environment variable isn't set until after the
name
and password has been validated.


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