#!/bin/bash

# A Git pre-push hook to protect a given branch from being
# accidentally pushed to.

# This defaults to protecting the master branch. You can choose a
# different branch to protect by setting the GIT_PROTECT
# environment variable.

branch="${GIT_PROTECT:-master}"
protected=`git config --get branch.$branch.merge`

while read local_ref local_sha remote_ref remote_sha
do
  if [[ "$protected" == "$remote_ref" ]] || [[ $remote_ref == *$branch ]]
  then
    exec < /dev/tty
    while true; do
      read -p "Do you wish to push to $branch [Yn]: " yn
      case $yn in
        [Yy]* ) exit 0;;
        * ) echo "Aborting push to $branch"; exit 1;;
      esac
    done
  fi
done

exit 0