verify-submodule-commits.sh

#!/bin/bash -e

echo ">>>> HOOK <<<<"
refBareRepo=$(pwd)

refname=$1
oldrev=$2
newrev=$3
# echo "ref: $refname"
# echo "old: $oldrev"
# echo "new: $newrev"
# git ls-tree ${oldrev} | awk '$2 == "commit"'

# refRepo=$(mktemp -d)
refRepo=$(mktemp -u -d)
gitmodulesFile=$(mktemp)
git clone ${refBareRepo} ${refRepo}
pushd ${refRepo} >/dev/null 2>&1
(
    unset GIT_DIR
    set -x
    # git init
    # git fetch ${refBareRepo} '+refs/heads/*:refs/remotes/origin/*' #--depth=1
    # git ls-tree ${newrev} | awk '$4 ~/\.gitmodules/ { print $3 }'
    filesha=$(git ls-tree ${newrev} | awk '$4 ~/\.gitmodules/ { print $3 }')
    git cat-file blob ${filesha} > ${gitmodulesFile}
    set +x
)
popd >/dev/null 2>&1
rm -rf ${refRepo}

git ls-tree ${newrev} | awk '$2 == "commit" { printf("%s %s\n", $NF, $(NF-1)) }' | \
    while read reponame reposha; do
        repourl=$(git config --file ${gitmodulesFile} --get-regexp 'submodule.'${reponame}'.url' | awk '{ print $2 }')
        # repourl=$(git config --file ${gitmodulesFile} --get-regexp 'submodule.'${reponame}'.url')
        # echo "repo: $reponame, sha: $reposha, url: $repourl"
        # echo "sha: $reposha"
        # echo -n "lsr: "
        # set -x
        # repoclone=$(mktemp -u -d)
        # git clone 
        git --git-dir ${repourl} rev-parse ${reposha} >/dev/null
        # git ls-remote --refs ${repourl} ${reposha}
        # set +x
    done

verify-submodule-commits_test.sh

#!/bin/bash

here=$(cd ${0%/*}; pwd)
hook=${1:-"${here}/verify-submodule-commits.sh"}

parent=$(mktemp -d)
child=$(mktemp -d)

others=($(mktemp -d) $(mktemp -d) $(mktemp -d))

# trap "${parent} ${child} ${others[@]}" EXIT

## Create the bare repos of parent and child
for r in ${parent} ${child} ${others[@]}; do
    cd ${r}
    git init --bare
    tmp=$(mktemp -d)
    cd ${tmp}
    git init .
    git remote add origin ${r}
    git pull origin master
    echo $RANDOM > a
    git add a && git commit -m '.'
    git push origin master
done

cp ${hook} ${parent}/hooks/update || exit 1

## Clone the parent
git clone ${parent} ${parent}.$$ || exit 2
cd ${parent}.$$

## Clone the children
for r in ${child} ${others[@]}; do
    git submodule add ${r}
done

touch t.$RANDOM
git add t.*

## Commit these children. This should work fine
git commit -m 'Initial'
echo -n "pwd: "
pwd
git push origin master && echo "SUCCESS!" || echo "FAILED!"

# git remote -v

# cat ${parent}/hooks/update