147 lines
4.4 KiB
Bash
147 lines
4.4 KiB
Bash
#!/bin/sh
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#
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# Simple script to upgrade Libreswan on CentOS and RHEL
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#
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# Copyright (C) 2015 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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SWAN_VER=3.16
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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 -v -e "release 6" -e "release 7" /etc/redhat-release; then
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echo "Sorry, 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 [ "$(uname -m)" != "x86_64" ]; then
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echo "Sorry, this script only supports 64-bit CentOS/RHEL."
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exit 1
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fi
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if [ "$(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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ipsec --version 2>/dev/null | grep -qs "Libreswan"
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if [ "$?" != "0" ]; then
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echo "This upgrade script requires that you already have Libreswan installed."
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echo "Aborting."
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exit 1
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fi
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ipsec --version 2>/dev/null | grep -qs "Libreswan ${SWAN_VER}"
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if [ "$?" = "0" ]; then
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echo "You already have Libreswan ${SWAN_VER} installed! "
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echo
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read -r -p "Do you wish to continue anyway? [y/N] " 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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echo "Welcome! This upgrade script will build and install Libreswan ${SWAN_VER} on your server."
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echo "This is intended for use on VPN servers with an older version of Libreswan installed."
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echo "Your existing VPN configuration files will NOT be modified."
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echo
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read -r -p "Do you wish to continue? [y/N] " response
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case $response in
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[yY][eE][sS]|[yY])
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echo
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echo "Please be patient. Setup is continuing..."
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echo
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;;
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*)
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echo "Aborting."
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exit 1
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;;
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esac
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# Create and change to working dir
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mkdir -p /opt/src
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cd /opt/src || { echo "Failed to change working directory to /opt/src. Aborting."; exit 1; }
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# Install wget and nano
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yum -y install wget nano
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# Add the EPEL repository
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if grep -qs "release 6" /etc/redhat-release; then
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EPEL_RPM="epel-release-6-8.noarch.rpm"
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EPEL_URL="http://download.fedoraproject.org/pub/epel/6/x86_64/$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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else
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echo "Sorry, 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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wget -t 3 -T 30 -nv -O $EPEL_RPM $EPEL_URL
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[ ! -f $EPEL_RPM ] && { echo "Could not retrieve EPEL repository 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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yum -y install ppp xl2tpd
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# Installed Libevent 2. 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://people.redhat.com/pwouters/libreswan-rhel6"
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RPM1="libevent2-2.0.21-1.el6.x86_64.rpm"
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RPM2="libevent2-devel-2.0.21-1.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 "Could not retrieve Libevent2 RPM file(s). Aborting."; exit 1; }
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rpm -ivh --force $RPM1 $RPM2 && /bin/rm -f $RPM1 $RPM2
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elif grep -qs "release 7" /etc/redhat-release; then
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yum -y install libevent-devel
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fi
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# Compile and install Libreswan (https://libreswan.org/)
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SWAN_URL=https://download.libreswan.org/libreswan-${SWAN_VER}.tar.gz
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/bin/rm -rf "/opt/src/libreswan-${SWAN_VER}"
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wget -t 3 -T 30 -qO- $SWAN_URL | tar xvz
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[ ! -d libreswan-${SWAN_VER} ] && { echo "Could not retrieve Libreswan source files. Aborting."; exit 1; }
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cd libreswan-${SWAN_VER}
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make programs && make install
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ipsec --version 2>/dev/null | grep -qs "Libreswan ${SWAN_VER}"
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if [ "$?" != "0" ]; then
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echo
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echo "Sorry, something went wrong."
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echo "Libreswan ${SWAN_VER} was NOT installed successfully."
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echo "Exiting script."
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exit 1
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fi
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# Restore SELinux contexts
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restorecon /etc/ipsec.d/*db 2>/dev/null
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restorecon /usr/local/sbin -Rv 2>/dev/null
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restorecon /usr/local/libexec/ipsec -Rv 2>/dev/null
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service ipsec restart
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service xl2tpd restart
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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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