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Improvements when importing GPG keys

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- Importing OpenVPN PGP key from keyserver should be more secure than
    downloading from the website as we specifically tell the keyserver
    which key we want, referring to its fingerprint
  - Exit if import is unsuccessful
This commit is contained in:
Orazio 2020-02-10 21:57:09 +01:00
parent 3730d315e9
commit 337fa10fdc
1 changed files with 17 additions and 4 deletions
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21
auto_install/install.sh
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@ -43,6 +43,11 @@ debianOvpnUserGroup="openvpn:openvpn"
UNATTUPG_RELEASE="1.16"
UNATTUPG_CONFIG="https://github.com/mvo5/unattended-upgrades/archive/${UNATTUPG_RELEASE}.tar.gz"
# GPG fingerprints (you can look them up at https://keyserver.ubuntu.com)
OPENVPN_REPO_KEY="0x30ebf4e73cce63eee124dd278e6da8b4e158c569"
DEBIAN_STRETCH_KEY="0xe1cf20ddffe4b89e802658f1e0b11894f66aec98"
DEBIAN_BUSTER_KEY="0x80d15823b7fd1561f9f7bcdddc30d7c23cbbabee"
# Find the rows and columns. Will default to 80x24 if it can not be detected.
screen_size=$(stty size 2>/dev/null || echo 24 80)
rows=$(echo "$screen_size" | awk '{print $1}')
@ -1050,7 +1055,8 @@ installOpenVPN(){
echo "::: Installing OpenVPN from Debian package... "
if [ "$PLAT" = "Debian" ] || [ "$PLAT" = "Ubuntu" ]; then
# gnupg is used to add the openvpn PGP key to the APT keyring
# gnupg is used by apt-key to import the openvpn GPG key into the
# APT keyring
PIVPN_DEPS=(gnupg)
installDependentPackages PIVPN_DEPS[@]
@ -1058,7 +1064,10 @@ installOpenVPN(){
# has already enabled the openvpn repository or not, just to make sure
# we have the right key
echo "::: Adding repository key..."
wget -qO- https://swupdate.openvpn.net/repos/repo-public.gpg | $SUDO apt-key add -
if ! $SUDO apt-key adv --keyserver keyserver.ubuntu.com --recv-keys "$OPENVPN_REPO_KEY"; then
echo "::: Failed to import OpenVPN GPG key"
exit 1
fi
if ! grep -qR "deb http.\?://build.openvpn.net/debian/openvpn/stable.\? $OSCN main" /etc/apt/sources.list*; then
echo "::: Adding OpenVPN repository... "
@ -1132,12 +1141,16 @@ installWireGuard(){
if [ "$(uname -m)" = "armv7l" ]; then
echo "::: Installing WireGuard from Debian package... "
# dirmngr is used to download repository keys for the unstable repo
# dirmngr is used by apt-key to import the debian GPG keys for the unstable
# repo into the APT keyring.
PIVPN_DEPS=(dirmngr)
installDependentPackages PIVPN_DEPS[@]
echo "::: Adding repository keys..."
$SUDO apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 04EE7237B7D453EC 648ACFD622F3D138
if ! $SUDO apt-key adv --keyserver keyserver.ubuntu.com --recv-keys "$DEBIAN_STRETCH_KEY" "$DEBIAN_BUSTER_KEY"; then
echo "::: Failed to import Debian GPG keys"
exit 1
fi
# This regular expression should match combinations like http[s]://mirror.example.com/debian[/] unstable main
if ! grep -qR 'deb http.\?://.*/debian.\? unstable main' /etc/apt/sources.list*; then