151 lines
4.7 KiB
Bash
151 lines
4.7 KiB
Bash
#!/bin/sh
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#
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# Script to upgrade Libreswan to a newer version on CentOS and RHEL
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#
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# Copyright (C) 2016 Lin Song
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#
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# This work is licensed under the Creative Commons Attribution-ShareAlike 3.0
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# Unported License: http://creativecommons.org/licenses/by-sa/3.0/
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#
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# Attribution required: please include my name in any derivative and let me
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# know how you have improved it!
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# Check https://libreswan.org and update version number if necessary
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SWAN_VER=3.16
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### Do not edit below this line
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if [ ! -f /etc/redhat-release ]; then
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echo "Looks like you aren't running this script on a CentOS/RHEL system."
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exit 1
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fi
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if ! grep -qs -e "release 6" -e "release 7" /etc/redhat-release; then
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echo "This script only supports versions 6 and 7 of CentOS/RHEL."
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exit 1
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fi
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if [ "$(uname -m)" != "x86_64" ]; then
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echo "This script only supports 64-bit CentOS/RHEL."
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exit 1
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fi
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if [ -f /proc/user_beancounters ]; then
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echo "This script does NOT support OpenVZ VPS."
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exit 1
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fi
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if [ "$(id -u)" != 0 ]; then
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echo "Sorry, you need to run this script as root."
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exit 1
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fi
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/usr/local/sbin/ipsec --version 2>/dev/null | grep -qs "Libreswan"
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if [ "$?" != "0" ]; then
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echo "This upgrade script requires you already have Libreswan installed."
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exit 1
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fi
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/usr/local/sbin/ipsec --version 2>/dev/null | grep -qs "Libreswan $SWAN_VER"
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if [ "$?" = "0" ]; then
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echo "Looks like you already have Libreswan version $SWAN_VER installed! "
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echo
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printf "Do you wish to continue anyway? [y/N] "
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read -r response
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case $response in
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[yY][eE][sS]|[yY])
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echo
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;;
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*)
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echo "Aborting."
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exit 1
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;;
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esac
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fi
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clear
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echo "Welcome! This script will build and install Libreswan $SWAN_VER on your server."
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echo "Related packages, such as those required by Libreswan compilation will also be installed."
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echo "This is intended for use on VPN servers running an older version of Libreswan."
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echo "Your existing VPN configuration files will NOT be modified."
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echo
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printf "Do you wish to continue? [y/N] "
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read -r response
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case $response in
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[yY][eE][sS]|[yY])
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echo
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echo "Please be patient. Setup is continuing..."
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echo
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;;
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*)
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echo "Aborting."
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exit 1
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;;
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esac
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# Create and change to working dir
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mkdir -p /opt/src
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cd /opt/src || { echo "Failed to change working dir to /opt/src. Aborting."; exit 1; }
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# Install Wget
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yum -y install wget
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# Add the EPEL repository
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if grep -qs "release 6" /etc/redhat-release; then
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EPEL_RPM=epel-release-6-8.noarch.rpm
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EPEL_URL=http://download.fedoraproject.org/pub/epel/6/x86_64/$EPEL_RPM
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elif grep -qs "release 7" /etc/redhat-release; then
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EPEL_RPM=epel-release-7-5.noarch.rpm
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EPEL_URL=http://download.fedoraproject.org/pub/epel/7/x86_64/e/$EPEL_RPM
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fi
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wget -t 3 -T 30 -nv -O "$EPEL_RPM" "$EPEL_URL"
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[ ! -f "$EPEL_RPM" ] && { echo "Cannot retrieve EPEL repo RPM file. Aborting."; exit 1; }
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rpm -ivh --force "$EPEL_RPM" && /bin/rm -f "$EPEL_RPM"
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# Install necessary packages
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yum -y install nss-devel nspr-devel pkgconfig pam-devel \
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libcap-ng-devel libselinux-devel \
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curl-devel gmp-devel flex bison gcc make \
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fipscheck-devel unbound-devel gmp gmp-devel xmlto
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# Installed Libevent2. Use backported version for CentOS 6.
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if grep -qs "release 6" /etc/redhat-release; then
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LE2_URL=https://download.libreswan.org/binaries/rhel/6/x86_64
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RPM1=libevent2-2.0.22-1.el6.x86_64.rpm
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RPM2=libevent2-devel-2.0.22-1.el6.x86_64.rpm
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wget -t 3 -T 30 -nv -O "$RPM1" "$LE2_URL/$RPM1"
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wget -t 3 -T 30 -nv -O "$RPM2" "$LE2_URL/$RPM2"
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[ ! -f "$RPM1" ] || [ ! -f "$RPM2" ] && { echo "Cannot retrieve Libevent2 RPM file(s). Aborting."; exit 1; }
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rpm -ivh --force "$RPM1" "$RPM2" && /bin/rm -f "$RPM1" "$RPM2"
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elif grep -qs "release 7" /etc/redhat-release; then
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yum -y install libevent-devel
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fi
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# Compile and install Libreswan
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SWAN_FILE="libreswan-${SWAN_VER}.tar.gz"
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SWAN_URL="https://download.libreswan.org/$SWAN_FILE"
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wget -t 3 -T 30 -nv -O "$SWAN_FILE" "$SWAN_URL"
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[ ! -f "$SWAN_FILE" ] && { echo "Cannot retrieve Libreswan source file. Aborting."; exit 1; }
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/bin/rm -rf "/opt/src/libreswan-$SWAN_VER"
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tar xvzf "$SWAN_FILE" && rm -f "$SWAN_FILE"
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cd "libreswan-$SWAN_VER" || { echo "Failed to enter Libreswan source dir. Aborting."; exit 1; }
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make programs && make install
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# Restore SELinux contexts
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/sbin/restorecon /etc/ipsec.d/*db 2>/dev/null
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/sbin/restorecon /usr/local/sbin -Rv 2>/dev/null
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/sbin/restorecon /usr/local/libexec/ipsec -Rv 2>/dev/null
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# Restart IPsec service
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/sbin/service ipsec restart
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# Check if Libreswan install was successful
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/usr/local/sbin/ipsec --version 2>/dev/null | grep -qs "$SWAN_VER"
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[ "$?" != "0" ] && { echo "Sorry, Libreswan $SWAN_VER failed to build. Aborting."; exit 1; }
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echo
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echo "Congratulations! Libreswan $SWAN_VER was installed successfully! "
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exit 0
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