#!/bin/bash

export LANG=C

TMPDIR=$(mktemp -d)
trap "rm -rf '${TMPDIR}'" EXIT

KEYSERVER='hkp://keys.gnupg.net'
GPG_OPTIONS='--quiet --batch --no-tty --no-permission-warning'
GPG="gpg ${GPG_OPTIONS} --keyserver "${KEYSERVER}" --homedir ${TMPDIR}"

pushd "$(dirname "$0")" >/dev/null

$GPG --gen-key <<EOF
%echo Generating Arch Linux 32 Keyring keychain master key...
Key-Type: RSA
Key-Length: 1024
Key-Usage: sign
Name-Real: Arch Linux 32 Keyring Keychain Master Key
Name-Email: archlinux32-keyring@localhost
Expire-Date: 0
%no-protection
%no-ask-passphrase
%commit
%echo Done
EOF

rm -rf master master-revoked packager packager-revoked archlinux32-trusted archlinux32-revoked
mkdir master master-revoked packager packager-revoked

while read -ra data; do
	keyid="${data[0]}"
	username="${data[@]:1}"
	${GPG} --recv-keys ${keyid} &>/dev/null
	gpg ${GPG_OPTIONS} -a --export ${keyid} </dev/null | \
		${GPG} --import &>/dev/null
	ssh buildmaster "gpg ${GPG_OPTIONS} -a --export ${keyid}" </dev/null | \
		${GPG} --import &>/dev/null
	printf 'minimize\nquit\ny\n' | \
		${GPG} --command-fd 0 --edit-key ${keyid}
	${GPG} --yes --lsign-key ${keyid} &>/dev/null
	${GPG} --armor --no-emit-version --export ${keyid} >> master/${username}.asc
	echo "${keyid}:4:" >> archlinux32-trusted
done < master-keyids
${GPG} --import-ownertrust < archlinux32-trusted 2>/dev/null

while read -ra data; do
	keyid="${data[0]}"
	${GPG} --recv-keys ${keyid} &>/dev/null
	gpg ${GPG_OPTIONS} -a --export ${keyid} | \
		${GPG} --import &>/dev/null
	ssh buildmaster "gpg ${GPG_OPTIONS} -a --export ${keyid}" | \
		${GPG} --import &>/dev/null
done < packager-keyids
while read -ra data; do
	keyid="${data[0]}"
	username="${data[@]:1}"
	printf 'clean\nquit\ny\n' | \
		${GPG} --command-fd 0 --edit-key ${keyid}
	if ! ${GPG} --list-keys --with-colons ${keyid} 2>/dev/null | grep -q '^pub:f:'; then
		echo "key is not fully trusted: ${keyid} ${username}"
	else
		${GPG} --armor --no-emit-version --export ${keyid} >> packager/${username}.asc
	fi
done < packager-keyids

touch archlinux32-revoked

while read -ra data; do
	keyid="${data[0]}"
	username="${data[2]}"
	${GPG} --recv-keys ${keyid} &>/dev/null
	gpg ${GPG_OPTIONS} -a --export ${keyid} | \
		${GPG} --import &>/dev/null
	ssh buildmaster "gpg ${GPG_OPTIONS} -a --export ${keyid}" | \
		${GPG} --import &>/dev/null
	printf 'clean\nquit\ny\n' | \
		${GPG} --command-fd 0 --edit-key ${keyid}
	if ! ${GPG} --list-keys --with-colons ${keyid} 2>/dev/null | grep -q '^pub:f:'; then
		${GPG} --armor --no-emit-version --export ${keyid} >> packager-revoked/${username}.asc
		echo "${keyid}" >> archlinux32-revoked
	else
		echo "key is still fully trusted: ${keyid} ${username}"
	fi
done < packager-revoked-keyids

while read -ra data; do
	keyid="${data[0]}"
	username="${data[2]}"
	${GPG} --recv-keys ${keyid} &>/dev/null
	gpg ${GPG_OPTIONS} -a --export ${keyid} | \
		${GPG} --import &>/dev/null
	ssh buildmaster "gpg ${GPG_OPTIONS} -a --export ${keyid}" | \
		${GPG} --import &>/dev/null
	printf 'clean\nquit\ny\n' | \
		${GPG} --command-fd 0 --edit-key ${keyid}
	if ! ${GPG} --list-keys --with-colons ${keyid} 2>/dev/null | grep -q '^pub:f:'; then
		${GPG} --armor --no-emit-version --export ${keyid} >> master-revoked/${username}.asc
		echo "${keyid}" >> archlinux32-revoked
	else
		echo "key is still fully trusted: ${keyid} ${username}"
	fi
done < master-revoked-keyids

cat master/*.asc master-revoked/*.asc packager/*.asc packager-revoked/*.asc > archlinux32.gpg

popd >/dev/null