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#!/bin/bash

# Forked from [archlinuxcn-keyring](https://github.com/archlinuxcn/archlinuxcn-keyring/blob/master/update-keys)

export LANG=C

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

#KEYSERVER='hkp://pgp.ustc.edu.cn'
#KEYSERVER='hkps://pool.sks-keyservers.net'
#KEYSERVER='hkp://pgp.mit.edu'
#KEYSERVER='hkp://keys.gnupg.net'
#KEYSERVER='hkps://keys.openpgp.org'
#KEYSERVER='hkp://pgp.nic.ad.jp'
#KEYSERVER='hkps://keys.mailvelope.com'
#KEYSERVER='hkp://hkps.pool.sks-keyservers.net'
#KEYSERVER='hkp://keyserver.ubuntu.com'

GPG="gpg --quiet --batch --no-tty --no-permission-warning --homedir ${TMPDIR}"

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

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

rm -rf master packager packager-revoked archlinux-lcpu-trusted archlinux-lcpu-revoked
mkdir master packager packager-revoked

while read -ra data; do
  keyid="${data[0]}"
  username="${data[1]}"
  keyserver="${data[2]}"
  echo "Recv '${keyid}' of '${username}' from '${keyserver}'"
  ${GPG} --keyserver ${keyserver} --recv-keys ${keyid} &>/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:" >>archlinux-lcpu-trusted
done <master-keyids
${GPG} --import-ownertrust <archlinux-lcpu-trusted 2>/dev/null

while read -ra data; do
  keyid="${data[0]}"
  keyserver="${data[2]}"
  ${GPG} --keyserver ${keyserver} --recv-keys ${keyid} &>/dev/null
done <packager-keyids
while read -ra data; do
  keyid="${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

while read -ra data; do
  keyid="${data[0]}"
  username="${data[1]}"
  keyserver="${data[2]}"
  echo "Recv '${keyid}' of '${username}' from '${keyserver}'"
  ${GPG} --keyserver ${keyserver} --recv-keys ${keyid} &>/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}" >>archlinux-lcpu-revoked
  else
    echo "key is still fully trusted: ${keyid} ${username}"
  fi
done <packager-revoked-keyids

cat master/*.asc packager/*.asc packager-revoked/*.asc >archlinux-lcpu.gpg

if [[ ! -f archlinux-lcpu-revoked ]]; then
  touch archlinux-lcpu-revoked
fi

popd >/dev/null