1
0
mirror of synced 2024-11-22 21:16:02 +03:00

Improve update scripts

- Refactor VPN update scripts into functions
- Cleanup
This commit is contained in:
hwdsl2 2021-08-22 00:43:14 -05:00
parent 665349336d
commit 52216d8f59
3 changed files with 639 additions and 546 deletions

View File

@ -19,24 +19,26 @@ SWAN_VER=4.4
### DO NOT edit below this line ###
export PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
[ -n "$VPN_UPDATE_SWAN_VER" ] && SWAN_VER="$VPN_UPDATE_SWAN_VER"
exiterr() { echo "Error: $1" >&2; exit 1; }
exiterr2() { exiterr "'yum install' failed."; }
bigecho() { echo "## $1"; }
vpnupgrade() {
[ -n "$VPN_UPDATE_SWAN_VER" ] && SWAN_VER="$VPN_UPDATE_SWAN_VER"
check_root() {
if [ "$(id -u)" != 0 ]; then
exiterr "Script must be run as root. Try 'sudo sh $0'"
fi
}
check_os() {
os_arch=$(uname -m | tr -dc 'A-Za-z0-9_-')
if ! grep -qs "Amazon Linux release 2" /etc/system-release; then
exiterr "This script only supports Amazon Linux 2."
fi
}
if [ "$(id -u)" != 0 ]; then
exiterr "Script must be run as root. Try 'sudo sh $0'"
fi
check_libreswan() {
case $SWAN_VER in
3.32|4.[1234])
true
@ -61,33 +63,12 @@ EOF
exit 1
fi
swan_ver_cur=4.4
swan_ver_url="https://dl.ls20.com/v1/amzn/2/swanverupg?arch=$os_arch&ver1=$swan_ver_old&ver2=$SWAN_VER"
swan_ver_latest=$(wget -t 3 -T 15 -qO- "$swan_ver_url")
if printf '%s' "$swan_ver_latest" | grep -Eq '^([3-9]|[1-9][0-9]{1,2})(\.([0-9]|[1-9][0-9]{1,2})){1,2}$' \
&& [ "$swan_ver_cur" != "$swan_ver_latest" ] \
&& printf '%s\n%s' "$swan_ver_cur" "$swan_ver_latest" | sort -C -V; then
echo "Note: A newer version of Libreswan ($swan_ver_latest) is available."
echo " To update to the new version, exit this script and run:"
echo " wget https://git.io/vpnupgrade -O vpnup.sh && sudo sh vpnup.sh"
echo
printf "Do you want to continue anyway? [y/N] "
read -r response
case $response in
[yY][eE][sS]|[yY])
echo
;;
*)
echo "Abort. No changes were made."
exit 1
;;
esac
fi
if [ "$swan_ver_old" = "$SWAN_VER" ]; then
echo "You already have Libreswan version $SWAN_VER installed! "
echo "If you continue, the same version will be re-installed."
echo
cat <<EOF
You already have Libreswan version $SWAN_VER installed!
If you continue, the same version will be re-installed.
EOF
printf "Do you want to continue anyway? [y/N] "
read -r response
case $response in
@ -100,7 +81,9 @@ if [ "$swan_ver_old" = "$SWAN_VER" ]; then
;;
esac
fi
}
show_setup_info() {
cat <<EOF
Welcome! Use this script to update Libreswan on your IPsec VPN server.
@ -108,9 +91,6 @@ Welcome! Use this script to update Libreswan on your IPsec VPN server.
Current version: Libreswan $swan_ver_old
Version to install: Libreswan $SWAN_VER
EOF
cat <<'EOF'
Note: This script will make the following changes to your VPN configuration:
- Fix obsolete ipsec.conf and/or ikev2.conf options
- Optimize VPN ciphers
@ -132,19 +112,24 @@ read -r response
case $response in
[yY][eE][sS]|[yY])
echo
bigecho "Please be patient. Setup is continuing..."
;;
*)
echo "Abort. No changes were made."
exit 1
;;
esac
}
# shellcheck disable=SC2154,SC2039,SC3047
start_setup() {
trap 'dlo=$dl;dl=$LINENO' DEBUG 2>/dev/null
trap 'finish $? $((dlo+1))' EXIT
mkdir -p /opt/src
cd /opt/src || exit 1
}
install_pkgs() {
bigecho "Installing required packages..."
(
set -x
yum -y -q install nss-devel nspr-devel pkgconfig pam-devel \
@ -152,9 +137,10 @@ bigecho "Installing required packages..."
flex bison gcc make wget sed tar \
systemd-devel libevent-devel fipscheck-devel >/dev/null
) || exiterr2
}
get_libreswan() {
bigecho "Downloading Libreswan..."
swan_file="libreswan-$SWAN_VER.tar.gz"
swan_url1="https://github.com/libreswan/libreswan/archive/v$SWAN_VER.tar.gz"
swan_url2="https://download.libreswan.org/$swan_file"
@ -164,9 +150,10 @@ swan_url2="https://download.libreswan.org/$swan_file"
) || exit 1
/bin/rm -rf "/opt/src/libreswan-$SWAN_VER"
tar xzf "$swan_file" && /bin/rm -f "$swan_file"
}
install_libreswan() {
bigecho "Compiling and installing Libreswan, please wait..."
cd "libreswan-$SWAN_VER" || exit 1
[ "$SWAN_VER" = "4.1" ] && sed -i 's/ sysv )/ sysvinit )/' programs/setup/setup.in
cat > Makefile.inc.local <<'EOF'
@ -193,14 +180,16 @@ cd /opt/src || exit 1
if ! /usr/local/sbin/ipsec --version 2>/dev/null | grep -qF "$SWAN_VER"; then
exiterr "Libreswan $SWAN_VER failed to build."
fi
}
# Restore SELinux contexts
restore_selinux() {
restorecon /etc/ipsec.d/*db 2>/dev/null
restorecon /usr/local/sbin -Rv 2>/dev/null
restorecon /usr/local/libexec/ipsec -Rv 2>/dev/null
}
update_config() {
bigecho "Updating VPN configuration..."
IKE_NEW=" ike=aes256-sha2,aes128-sha2,aes256-sha1,aes128-sha1,aes256-sha2;modp1024,aes128-sha1;modp1024"
PHASE2_NEW=" phase2alg=aes_gcm-null,aes128-sha1,aes256-sha1,aes256-sha2_512,aes128-sha2,aes256-sha2"
@ -233,12 +222,15 @@ sed -i "/conn shared/a \ ikev2=never" /etc/ipsec.conf
if grep -qs ike-frag /etc/ipsec.d/ikev2.conf; then
sed -i 's/^[[:space:]]\+ike-frag=/ fragmentation=/' /etc/ipsec.d/ikev2.conf
fi
}
restart_ipsec() {
bigecho "Restarting IPsec service..."
mkdir -p /run/pluto
service ipsec restart 2>/dev/null
}
show_setup_complete() {
cat <<EOF
================================================
@ -263,7 +255,43 @@ IMPORTANT: You must edit /etc/ipsec.conf and replace
EOF
fi
}
check_swan_ver() {
swan_ver_cur=4.4
swan_ver_url="https://dl.ls20.com/v1/amzn/2/swanverupg?arch=$os_arch&ver1=$swan_ver_old&ver2=$SWAN_VER"
[ "$1" != "0" ] && swan_ver_url="$swan_ver_url&e=$2"
swan_ver_latest=$(wget -t 3 -T 15 -qO- "$swan_ver_url")
if printf '%s' "$swan_ver_latest" | grep -Eq '^([3-9]|[1-9][0-9]{1,2})(\.([0-9]|[1-9][0-9]{1,2})){1,2}$' \
&& [ "$1" = "0" ] && [ "$swan_ver_cur" != "$swan_ver_latest" ] \
&& printf '%s\n%s' "$swan_ver_cur" "$swan_ver_latest" | sort -C -V; then
cat <<EOF
Note: A newer version of Libreswan ($swan_ver_latest) is available.
To update, run:
wget https://git.io/vpnupgrade -O vpnup.sh && sudo sh vpnup.sh
EOF
fi
}
finish() {
check_swan_ver "$1" "$2"
exit "$1"
}
vpnupgrade() {
check_root
check_os
check_libreswan
show_setup_info
start_setup
install_pkgs
get_libreswan
install_libreswan
restore_selinux
update_config
restart_ipsec
show_setup_complete
}
## Defer setup until we have the complete script

View File

@ -19,15 +19,25 @@ SWAN_VER=4.4
### DO NOT edit below this line ###
export PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
[ -n "$VPN_UPDATE_SWAN_VER" ] && SWAN_VER="$VPN_UPDATE_SWAN_VER"
exiterr() { echo "Error: $1" >&2; exit 1; }
exiterr2() { exiterr "'yum install' failed."; }
bigecho() { echo "## $1"; }
vpnupgrade() {
check_root() {
if [ "$(id -u)" != 0 ]; then
exiterr "Script must be run as root. Try 'sudo sh $0'"
fi
}
[ -n "$VPN_UPDATE_SWAN_VER" ] && SWAN_VER="$VPN_UPDATE_SWAN_VER"
check_vz() {
if [ -f /proc/user_beancounters ]; then
exiterr "OpenVZ VPS is not supported."
fi
}
check_os() {
os_type=centos
os_arch=$(uname -m | tr -dc 'A-Za-z0-9_-')
rh_file="/etc/redhat-release"
@ -44,15 +54,9 @@ elif grep -qs "release 8" "$rh_file"; then
else
exiterr "This script only supports CentOS/RHEL 7 and 8."
fi
}
if [ -f /proc/user_beancounters ]; then
exiterr "OpenVZ VPS is not supported."
fi
if [ "$(id -u)" != 0 ]; then
exiterr "Script must be run as root. Try 'sudo sh $0'"
fi
check_libreswan() {
case $SWAN_VER in
3.32|4.[1234])
true
@ -77,33 +81,12 @@ EOF
exit 1
fi
swan_ver_cur=4.4
swan_ver_url="https://dl.ls20.com/v1/$os_type/$os_ver/swanverupg?arch=$os_arch&ver1=$swan_ver_old&ver2=$SWAN_VER"
swan_ver_latest=$(wget -t 3 -T 15 -qO- "$swan_ver_url")
if printf '%s' "$swan_ver_latest" | grep -Eq '^([3-9]|[1-9][0-9]{1,2})(\.([0-9]|[1-9][0-9]{1,2})){1,2}$' \
&& [ "$swan_ver_cur" != "$swan_ver_latest" ] \
&& printf '%s\n%s' "$swan_ver_cur" "$swan_ver_latest" | sort -C -V; then
echo "Note: A newer version of Libreswan ($swan_ver_latest) is available."
echo " To update to the new version, exit this script and run:"
echo " wget https://git.io/vpnupgrade -O vpnup.sh && sudo sh vpnup.sh"
echo
printf "Do you want to continue anyway? [y/N] "
read -r response
case $response in
[yY][eE][sS]|[yY])
echo
;;
*)
echo "Abort. No changes were made."
exit 1
;;
esac
fi
if [ "$swan_ver_old" = "$SWAN_VER" ]; then
echo "You already have Libreswan version $SWAN_VER installed! "
echo "If you continue, the same version will be re-installed."
echo
cat <<EOF
You already have Libreswan version $SWAN_VER installed!
If you continue, the same version will be re-installed.
EOF
printf "Do you want to continue anyway? [y/N] "
read -r response
case $response in
@ -116,7 +99,9 @@ if [ "$swan_ver_old" = "$SWAN_VER" ]; then
;;
esac
fi
}
show_setup_info() {
cat <<EOF
Welcome! Use this script to update Libreswan on your IPsec VPN server.
@ -124,9 +109,6 @@ Welcome! Use this script to update Libreswan on your IPsec VPN server.
Current version: Libreswan $swan_ver_old
Version to install: Libreswan $SWAN_VER
EOF
cat <<'EOF'
Note: This script will make the following changes to your VPN configuration:
- Fix obsolete ipsec.conf and/or ikev2.conf options
- Optimize VPN ciphers
@ -148,32 +130,38 @@ read -r response
case $response in
[yY][eE][sS]|[yY])
echo
bigecho "Please be patient. Setup is continuing..."
;;
*)
echo "Abort. No changes were made."
exit 1
;;
esac
}
# shellcheck disable=SC2154,SC2039,SC3047
start_setup() {
trap 'dlo=$dl;dl=$LINENO' DEBUG 2>/dev/null
trap 'finish $? $((dlo+1))' EXIT
mkdir -p /opt/src
cd /opt/src || exit 1
}
install_pkgs_1() {
bigecho "Installing required packages..."
(
set -x
yum -y -q install nss-devel nspr-devel pkgconfig pam-devel \
libcap-ng-devel libselinux-devel curl-devel nss-tools \
flex bison gcc make wget sed tar >/dev/null
) || exiterr2
}
install_pkgs_2() {
erp="--enablerepo"
rp1="$erp=*server-*optional*"
rp2="$erp=*releases-optional*"
rp3="$erp=[Pp]ower[Tt]ools"
[ "$os_type" = "rhel" ] && rp3="$erp=codeready-builder-for-rhel-8-*"
if [ "$os_ver" = "7" ]; then
(
set -x
@ -185,9 +173,10 @@ else
yum "$rp3" -y -q install systemd-devel libevent-devel fipscheck-devel >/dev/null
) || exiterr2
fi
}
get_libreswan() {
bigecho "Downloading Libreswan..."
swan_file="libreswan-$SWAN_VER.tar.gz"
swan_url1="https://github.com/libreswan/libreswan/archive/v$SWAN_VER.tar.gz"
swan_url2="https://download.libreswan.org/$swan_file"
@ -197,9 +186,10 @@ swan_url2="https://download.libreswan.org/$swan_file"
) || exit 1
/bin/rm -rf "/opt/src/libreswan-$SWAN_VER"
tar xzf "$swan_file" && /bin/rm -f "$swan_file"
}
install_libreswan() {
bigecho "Compiling and installing Libreswan, please wait..."
cd "libreswan-$SWAN_VER" || exit 1
[ "$SWAN_VER" = "4.1" ] && sed -i 's/ sysv )/ sysvinit )/' programs/setup/setup.in
cat > Makefile.inc.local <<'EOF'
@ -226,14 +216,16 @@ cd /opt/src || exit 1
if ! /usr/local/sbin/ipsec --version 2>/dev/null | grep -qF "$SWAN_VER"; then
exiterr "Libreswan $SWAN_VER failed to build."
fi
}
# Restore SELinux contexts
restore_selinux() {
restorecon /etc/ipsec.d/*db 2>/dev/null
restorecon /usr/local/sbin -Rv 2>/dev/null
restorecon /usr/local/libexec/ipsec -Rv 2>/dev/null
}
update_config() {
bigecho "Updating VPN configuration..."
IKE_NEW=" ike=aes256-sha2,aes128-sha2,aes256-sha1,aes128-sha1,aes256-sha2;modp1024,aes128-sha1;modp1024"
PHASE2_NEW=" phase2alg=aes_gcm-null,aes128-sha1,aes256-sha1,aes256-sha2_512,aes128-sha2,aes256-sha2"
@ -266,12 +258,15 @@ sed -i "/conn shared/a \ ikev2=never" /etc/ipsec.conf
if grep -qs ike-frag /etc/ipsec.d/ikev2.conf; then
sed -i 's/^[[:space:]]\+ike-frag=/ fragmentation=/' /etc/ipsec.d/ikev2.conf
fi
}
restart_ipsec() {
bigecho "Restarting IPsec service..."
mkdir -p /run/pluto
service ipsec restart 2>/dev/null
}
show_setup_complete() {
cat <<EOF
================================================
@ -296,7 +291,45 @@ IMPORTANT: You must edit /etc/ipsec.conf and replace
EOF
fi
}
check_swan_ver() {
swan_ver_cur=4.4
swan_ver_url="https://dl.ls20.com/v1/$os_type/$os_ver/swanverupg?arch=$os_arch&ver1=$swan_ver_old&ver2=$SWAN_VER"
[ "$1" != "0" ] && swan_ver_url="$swan_ver_url&e=$2"
swan_ver_latest=$(wget -t 3 -T 15 -qO- "$swan_ver_url")
if printf '%s' "$swan_ver_latest" | grep -Eq '^([3-9]|[1-9][0-9]{1,2})(\.([0-9]|[1-9][0-9]{1,2})){1,2}$' \
&& [ "$1" = "0" ] && [ "$swan_ver_cur" != "$swan_ver_latest" ] \
&& printf '%s\n%s' "$swan_ver_cur" "$swan_ver_latest" | sort -C -V; then
cat <<EOF
Note: A newer version of Libreswan ($swan_ver_latest) is available.
To update, run:
wget https://git.io/vpnupgrade -O vpnup.sh && sudo sh vpnup.sh
EOF
fi
}
finish() {
check_swan_ver "$1" "$2"
exit "$1"
}
vpnupgrade() {
check_root
check_vz
check_os
check_libreswan
show_setup_info
start_setup
install_pkgs_1
install_pkgs_2
get_libreswan
install_libreswan
restore_selinux
update_config
restart_ipsec
show_setup_complete
}
## Defer setup until we have the complete script

View File

@ -19,15 +19,25 @@ SWAN_VER=4.4
### DO NOT edit below this line ###
export PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
[ -n "$VPN_UPDATE_SWAN_VER" ] && SWAN_VER="$VPN_UPDATE_SWAN_VER"
exiterr() { echo "Error: $1" >&2; exit 1; }
exiterr2() { exiterr "'apt-get install' failed."; }
bigecho() { echo "## $1"; }
vpnupgrade() {
check_root() {
if [ "$(id -u)" != 0 ]; then
exiterr "Script must be run as root. Try 'sudo sh $0'"
fi
}
[ -n "$VPN_UPDATE_SWAN_VER" ] && SWAN_VER="$VPN_UPDATE_SWAN_VER"
check_vz() {
if [ -f /proc/user_beancounters ]; then
exiterr "OpenVZ VPS is not supported."
fi
}
check_os() {
os_type=$(lsb_release -si 2>/dev/null)
os_arch=$(uname -m | tr -dc 'A-Za-z0-9_-')
[ -z "$os_type" ] && [ -f /etc/os-release ] && os_type=$(. /etc/os-release && printf '%s' "$ID")
@ -45,20 +55,13 @@ case $os_type in
exiterr "This script only supports Ubuntu and Debian."
;;
esac
os_ver=$(sed 's/\..*//' /etc/debian_version | tr -dc 'A-Za-z0-9')
if [ "$os_ver" = "8" ] || [ "$os_ver" = "jessiesid" ]; then
exiterr "Debian 8 or Ubuntu < 16.04 is not supported."
fi
}
if [ -f /proc/user_beancounters ]; then
exiterr "OpenVZ VPS is not supported."
fi
if [ "$(id -u)" != 0 ]; then
exiterr "Script must be run as root. Try 'sudo sh $0'"
fi
check_libreswan() {
case $SWAN_VER in
3.32|4.[1234])
true
@ -87,33 +90,12 @@ EOF
exit 1
fi
swan_ver_cur=4.4
swan_ver_url="https://dl.ls20.com/v1/$os_type/$os_ver/swanverupg?arch=$os_arch&ver1=$swan_ver_old&ver2=$SWAN_VER"
swan_ver_latest=$(wget -t 3 -T 15 -qO- "$swan_ver_url")
if printf '%s' "$swan_ver_latest" | grep -Eq '^([3-9]|[1-9][0-9]{1,2})(\.([0-9]|[1-9][0-9]{1,2})){1,2}$' \
&& [ "$swan_ver_cur" != "$swan_ver_latest" ] \
&& printf '%s\n%s' "$swan_ver_cur" "$swan_ver_latest" | sort -C -V; then
echo "Note: A newer version of Libreswan ($swan_ver_latest) is available."
echo " To update to the new version, exit this script and run:"
echo " wget https://git.io/vpnupgrade -O vpnup.sh && sudo sh vpnup.sh"
echo
printf "Do you want to continue anyway? [y/N] "
read -r response
case $response in
[yY][eE][sS]|[yY])
echo
;;
*)
echo "Abort. No changes were made."
exit 1
;;
esac
fi
if [ "$swan_ver_old" = "$SWAN_VER" ]; then
echo "You already have Libreswan version $SWAN_VER installed! "
echo "If you continue, the same version will be re-installed."
echo
cat <<EOF
You already have Libreswan version $SWAN_VER installed!
If you continue, the same version will be re-installed.
EOF
printf "Do you want to continue anyway? [y/N] "
read -r response
case $response in
@ -126,7 +108,9 @@ if [ "$swan_ver_old" = "$SWAN_VER" ]; then
;;
esac
fi
}
show_setup_info() {
cat <<EOF
Welcome! Use this script to update Libreswan on your IPsec VPN server.
@ -134,9 +118,6 @@ Welcome! Use this script to update Libreswan on your IPsec VPN server.
Current version: Libreswan $swan_ver_old
Version to install: Libreswan $SWAN_VER
EOF
cat <<'EOF'
Note: This script will make the following changes to your VPN configuration:
- Fix obsolete ipsec.conf and/or ikev2.conf options
- Optimize VPN ciphers
@ -158,24 +139,32 @@ read -r response
case $response in
[yY][eE][sS]|[yY])
echo
bigecho "Please be patient. Setup is continuing..."
;;
*)
echo "Abort. No changes were made."
exit 1
;;
esac
}
# shellcheck disable=SC2154,SC2039,SC3047
start_setup() {
trap 'dlo=$dl;dl=$LINENO' DEBUG 2>/dev/null
trap 'finish $? $((dlo+1))' EXIT
mkdir -p /opt/src
cd /opt/src || exit 1
}
install_pkgs_1() {
bigecho "Installing required packages..."
export DEBIAN_FRONTEND=noninteractive
(
set -x
apt-get -yqq update
) || exiterr "'apt-get update' failed."
}
install_pkgs_2() {
(
set -x
apt-get -yqq install libnss3-dev libnspr4-dev pkg-config \
@ -183,9 +172,10 @@ export DEBIAN_FRONTEND=noninteractive
libcurl4-nss-dev libnss3-tools libevent-dev libsystemd-dev \
flex bison gcc make wget sed >/dev/null
) || exiterr2
}
get_libreswan() {
bigecho "Downloading Libreswan..."
swan_file="libreswan-$SWAN_VER.tar.gz"
swan_url1="https://github.com/libreswan/libreswan/archive/v$SWAN_VER.tar.gz"
swan_url2="https://download.libreswan.org/$swan_file"
@ -195,9 +185,10 @@ swan_url2="https://download.libreswan.org/$swan_file"
) || exit 1
/bin/rm -rf "/opt/src/libreswan-$SWAN_VER"
tar xzf "$swan_file" && /bin/rm -f "$swan_file"
}
install_libreswan() {
bigecho "Compiling and installing Libreswan, please wait..."
cd "libreswan-$SWAN_VER" || exit 1
[ "$SWAN_VER" = "4.1" ] && sed -i 's/ sysv )/ sysvinit )/' programs/setup/setup.in
cat > Makefile.inc.local <<'EOF'
@ -232,9 +223,10 @@ cd /opt/src || exit 1
if ! /usr/local/sbin/ipsec --version 2>/dev/null | grep -qF "$SWAN_VER"; then
exiterr "Libreswan $SWAN_VER failed to build."
fi
}
update_config() {
bigecho "Updating VPN configuration..."
IKE_NEW=" ike=aes256-sha2,aes128-sha2,aes256-sha1,aes128-sha1,aes256-sha2;modp1024,aes128-sha1;modp1024"
PHASE2_NEW=" phase2alg=aes_gcm-null,aes128-sha1,aes256-sha1,aes256-sha2_512,aes128-sha2,aes256-sha2"
@ -273,12 +265,15 @@ sed -i "/conn shared/a \ ikev2=never" /etc/ipsec.conf
if grep -qs ike-frag /etc/ipsec.d/ikev2.conf; then
sed -i 's/^[[:space:]]\+ike-frag=/ fragmentation=/' /etc/ipsec.d/ikev2.conf
fi
}
restart_ipsec() {
bigecho "Restarting IPsec service..."
mkdir -p /run/pluto
service ipsec restart 2>/dev/null
}
show_setup_complete() {
cat <<EOF
================================================
@ -303,7 +298,44 @@ IMPORTANT: You must edit /etc/ipsec.conf and replace
EOF
fi
}
check_swan_ver() {
swan_ver_cur=4.4
swan_ver_url="https://dl.ls20.com/v1/$os_type/$os_ver/swanverupg?arch=$os_arch&ver1=$swan_ver_old&ver2=$SWAN_VER"
[ "$1" != "0" ] && swan_ver_url="$swan_ver_url&e=$2"
swan_ver_latest=$(wget -t 3 -T 15 -qO- "$swan_ver_url")
if printf '%s' "$swan_ver_latest" | grep -Eq '^([3-9]|[1-9][0-9]{1,2})(\.([0-9]|[1-9][0-9]{1,2})){1,2}$' \
&& [ "$1" = "0" ] && [ "$swan_ver_cur" != "$swan_ver_latest" ] \
&& printf '%s\n%s' "$swan_ver_cur" "$swan_ver_latest" | sort -C -V; then
cat <<EOF
Note: A newer version of Libreswan ($swan_ver_latest) is available.
To update, run:
wget https://git.io/vpnupgrade -O vpnup.sh && sudo sh vpnup.sh
EOF
fi
}
finish() {
check_swan_ver "$1" "$2"
exit "$1"
}
vpnupgrade() {
check_root
check_vz
check_os
check_libreswan
show_setup_info
start_setup
install_pkgs_1
install_pkgs_2
get_libreswan
install_libreswan
update_config
restart_ipsec
show_setup_complete
}
## Defer setup until we have the complete script