44 lines
1.5 KiB
Bash
Executable File
44 lines
1.5 KiB
Bash
Executable File
#!/bin/bash
|
|
|
|
# Copyright (c) 2016 G. Sylvie Davies. http://bit-booster.com/
|
|
# Copyright (c) 2016 torek. http://stackoverflow.com/users/1256452/torek
|
|
# Copyright (c) 2021 Alfred Melch. https://melch.pro
|
|
# License: MIT license. https://opensource.org/licenses/MIT
|
|
|
|
# From: https://blog.developer.atlassian.com/stop-foxtrots-now/
|
|
|
|
NULL_REV="0000000000000000000000000000000000000000"
|
|
|
|
# refname (e.g. refs/heads/master) will be updated from oldrev (commit hash) to newrev (commit hash)
|
|
while read oldrev newrev refname
|
|
do
|
|
if [ $oldrev = $NULL_REV ]; then
|
|
# pushing a new branch
|
|
exit 0
|
|
fi
|
|
if [ $newrev = $NULL_REV ]; then
|
|
# deleting a branch
|
|
exit 0
|
|
fi
|
|
if [ "$refname" = "refs/heads/master" ] || [ "$refname" = "refs/heads/main" ]; then
|
|
# Find the first parent of the commit where oldrev is a parent
|
|
# git log: list commits from newrev to oldrev
|
|
# %H: commit hash
|
|
# %P: parent hashes (list of parents)
|
|
# grep: filter for oldrev
|
|
# Should appear once as a parent
|
|
# awk: print the second word
|
|
# The second word is the first parent. Third word would be second parent, ...
|
|
MATCH=`git log --first-parent --pretty='%H %P' $oldrev..$newrev | grep $oldrev | awk '{ print $2 }'`
|
|
|
|
# First parent should be the oldrev
|
|
if [ "$oldrev" = "$MATCH" ]; then
|
|
exit 0
|
|
else
|
|
echo >&2 "*** Push rejected! Foxtrot merge blocked! ***"
|
|
echo "See: https://blog.developer.atlassian.com/stop-foxtrots-now/"
|
|
exit 1
|
|
fi
|
|
fi
|
|
done
|