On Oct 7, 2010, at 03:29, Stephen Connolly wrote:

> I remember reading before about a hack/trick that allows you to ensure that 
> the client is at least mergeinfo aware when the repository is served via 
> Apache httpd.
> 
> Google is not being co-operative with my attempts to find the Apache HTTPD 
> directive that makes this magic happen.
> 
> IIRC the trick is less than perfect, i.e. it just blocks < 1.5.2 clients from 
> connecting (though the version limit could be 1.5.0 or 1.5.1 I recall it 
> being about querying the capabilities of the client and a specific capability 
> was only introduced in 1.5.1 or 1.5.2) A better trick would allow blocking 
> clients less than 1.6.13 from connecting ;-)

There is no Apache directive for this; instead, you can write a clause in your 
start-commit hook script. From the start-commit.tmpl file created for you in 
every new repository:


#   [1] REPOS-PATH   (the path to this repository)
#   [2] USER         (the authenticated user attempting to commit)
#   [3] CAPABILITIES (a colon-separated list of capabilities reported
#                     by the client; see note below)
#
# Note: The CAPABILITIES parameter is new in Subversion 1.5, and 1.5
# clients will typically report at least the "mergeinfo" capability.
# If there are other capabilities, then the list is colon-separated,
# e.g.: "mergeinfo:some-other-capability" (the order is undefined).


So if the third parameter passed to your start-commit hook script is empty / 
nonexistent, you know that client is older than 1.5 and you can take some 
action, such as denying the commit, if that's what you want to do.

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