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#!/usr/bin/env bash
# git pre-push hook script to:
# 1) prevent "fixup!" and "squash!" commit from ending up in master, release-*
# or maint-*
# 2) Disallow pushing branches other than master, release-*
# and maint-* to origin (e.g. gitweb.torproject.org).
#
# To install this script, copy it into .git/hooks/pre-push path in your
# local copy of git repository. Make sure it has permission to execute.
# Furthermore, make sure that TOR_UPSTREAM_REMOTE_NAME environment
# variable is set to local name of git remote that corresponds to upstream
# repository on e.g. git.torproject.org.
#
# The following sample script was used as starting point:
# https://github.com/git/git/blob/master/templates/hooks--pre-push.sample
echo "Running pre-push hook"
z40=0000000000000000000000000000000000000000
upstream_name=${TOR_UPSTREAM_REMOTE_NAME:-"upstream"}
workdir=$(git rev-parse --show-toplevel)
if [ -x "$workdir/.git/hooks/pre-commit" ]; then
if ! "$workdir"/.git/hooks/pre-commit; then
exit 1
fi
fi
PT_DIR=scripts/maint/practracker
if [ -e "${PT_DIR}/practracker.py" ]; then
if [ -e "${PT_DIR}/.enable_practracker_in_hooks" ]; then
if ! python3 "${PT_DIR}/practracker.py" "$workdir"; then
exit 1
fi
fi
fi
remote="$1"
remote_name=$(git remote --verbose | grep "$2" | awk '{print $1}' | head -n 1)
if [[ "$remote_name" != "$upstream_name" ]]; then
echo "Not pushing to upstream - refraining from further checks"
exit 0
fi
ref_is_upstream_branch() {
if [ "$1" == "refs/heads/master" ] ||
[[ "$1" == refs/heads/release-* ]] ||
[[ "$1" == refs/heads/maint-* ]]
then
return 1
fi
}
# shellcheck disable=SC2034
while read -r local_ref local_sha remote_ref remote_sha
do
if [ "$local_sha" = $z40 ]
then
# Handle delete
:
else
if [ "$remote_sha" = $z40 ]
then
# New branch, examine all commits
range="$local_sha"
else
# Update to existing branch, examine new commits
range="$remote_sha..$local_sha"
fi
if (ref_is_upstream_branch "$local_ref" == 0 ||
ref_is_upstream_branch "$remote_ref" == 0) &&
[ "$local_ref" != "$remote_ref" ]
then
if [ "$remote" == "origin" ]
then
echo >&2 "Not pushing: $local_ref to $remote_ref"
echo >&2 "If you really want to push this, use --no-verify."
exit 1
else
continue
fi
fi
# Check for fixup! commit
commit=$(git rev-list -n 1 --grep '^fixup!' "$range")
if [ -n "$commit" ]
then
echo >&2 "Found fixup! commit in $local_ref, not pushing"
echo >&2 "If you really want to push this, use --no-verify."
exit 1
fi
# Check for squash! commit
commit=$(git rev-list -n 1 --grep '^squash!' "$range")
if [ -n "$commit" ]
then
echo >&2 "Found squash! commit in $local_ref, not pushing"
echo >&2 "If you really want to push this, use --no-verify."
exit 1
fi
fi
done
exit 0
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