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#!/bin/sh
# --- Command line
refname=${1}
oldrev=${2}
newrev=${3}
# --- Safety check
if [ -z "${GIT_DIR}" ]; then
echo "Don't run this script from the command line." >&2
echo " (if you want, you could supply GIT_DIR then run" >&2
echo " ${0} <ref> <oldrev> <newrev>)" >&2
exit 1
fi
if [ -z "${refname}" -o -z "${oldrev}" -o -z "${newrev}" ]; then
echo "usage: ${0} <ref> <oldrev> <newrev>" >&2
exit 1
fi
VERIFY_SIGS=$(git config --get gentoo.verify-signatures)
: ${VERIFY_SIGS:=gentoo-devs}
case ${VERIFY_SIGS} in
gentoo-devs)
;;
no)
;;
*)
echo "Invalid value of gentoo.verify-signatures" >&2
exit 1
esac
# --- Check types
# if $newrev is 0000...0000, it's a commit to delete a ref.
zero="0000000000000000000000000000000000000000"
case ${refname} in
refs/heads/master)
IFS='
'
# verify that everything on the left-hand side of commit history is signed
# (further branches of merges can be unsigned)
revs=$(git rev-list --first-parent "${newrev}" "^${oldrev}")
for r in ${revs}; do
committer=$(git show -q --pretty=format:'%ce' "${r}")
if [[ ${VERIFY_SIGS} == gentoo-devs && ${committer} != *@gentoo.org ]]; then
echo "*** Committer address is not @gentoo.org, refusing"
exit 1
fi
signst=$(git show -q --pretty=format:'%G?' "${r}")
case ${VERIFY_SIGS} in
gentoo-devs)
# gentoo dev signatures must be Good
[[ ${signst} == G ]] && continue
;;
no)
# additionally skip untrusted/impossible to check
# when verification is disabled
[[ ${signst} == [GUE] ]] && continue
;;
esac
# error reporting
case ${signst} in
U)
echo "*** Untrusted signature on ${r}, refusing"
exit 1
;;
B)
echo "*** Bad signature on ${r}, refusing"
exit 1
;;
N)
echo "*** No signature on ${r}, refusing"
exit 1
;;
E)
echo "*** Signature cannot be checked on ${r}, refusing"
exit 1
;;
*)
echo "*** Unknown signature status '${signst}', refusing"
exit 1
;;
esac
done
;;
*)
;;
esac
# --- Finished
exit 0
|
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