1. Stefan Saasen
  2. git


Pierre Habouzit  committed aed97c6

hook/update: example of how to prevent branch creation

Since git doesn't provide a receive.denyBranchCreation or similar, here is
an example of how to be sure users cannot create branches remotely by
pushing a new reference.

This setup has been proven useful to prevent creation of spurious branches
because of users having their remote.origin.push set to HEAD, when they
use `git push` while being on a local topic branch of theirs instead of
the proper one.

Signed-off-by: Pierre Habouzit <madcoder@debian.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

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File templates/hooks--update.sample

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 # hooks.allowdeletebranch
 #   This boolean sets whether deleting branches will be allowed in the
 #   repository.  By default they won't be.
+# hooks.denycreatebranch
+#   This boolean sets whether remotely creating branches will be denied
+#   in the repository.  By default this is allowed.
 # --- Command line
 # --- Config
 allowunannotated=$(git config --bool hooks.allowunannotated)
 allowdeletebranch=$(git config --bool hooks.allowdeletebranch)
+denycreatebranch=$(git config --bool hooks.denycreatebranch)
 allowdeletetag=$(git config --bool hooks.allowdeletetag)
 # check for no description
 # --- Check types
 # if $newrev is 0000...0000, it's a commit to delete a ref.
-if [ "$newrev" = "0000000000000000000000000000000000000000" ]; then
+if [ "$newrev" = "$zero" ]; then
 	newrev_type=$(git-cat-file -t $newrev)
 		# branch
+		if [ "$oldrev" = "$zero" -a "$denycreatebranch" = "true" ]; then
+			echo "*** Creating a branch is not allowed in this repository" >&2
+			exit 1
+		fi
 		# delete branch