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#!/bin/bash
#############################################################################
# Builds OpenVPN statically against mbedtls (aka polarssl).
# Requirements: cmake
# Output: ~/openvpn_build/sbin/openvpn-x.y.z
#############################################################################
set -e
#set -x
# [!] This needs to be updated for every release --------------------------
OPENVPN="openvpn-2.4.9"
MBEDTLS="mbedtls-2.24.0"
LZO="lzo-2.10"
ZLIB="zlib-1.2.11"
MBEDTLS_SHA512="5437ea57eb8b8af9446a796876aa2bfe3c59c88f926b1638c7e8a021a8bef9f4bc6cb1b254e7387e2afe095bd27c518060719726bbaf5478582a56c34315cfb8"
LZO_SHA1="4924676a9bae5db58ef129dc1cebce3baa3c4b5d"
# -------------------------------------------------------------------------
platform='unknown'
unamestr=`uname`
if [[ "$unamestr" == 'Linux' ]]; then
platform='linux'
elif [[ "$unamestr" == 'Darwin' ]]; then
platform='osx'
fi
BUILDDIR="openvpn_build"
mkdir -p ~/$BUILDDIR && cd ~/$BUILDDIR
BASE=`pwd`
SRC=$BASE/src
mkdir -p $SRC
SHASUM="/usr/bin/shasum"
ZLIB_KEYS="https://keys.gnupg.net/pks/lookup?op=get&search=0x783FCD8E58BCAFBA"
OPENVPN_KEYS="https://swupdate.openvpn.net/community/keys/security.key.asc"
WGET="wget --prefer-family=IPv4"
DEST=$BASE/install
LDFLAGS="-L$DEST/lib -L$DEST/usr/local/lib -W"
CPPFLAGS="-I$DEST/include"
CFLAGS="-D_FORTIFY_SOURCE=2 -O1 -Wformat -Wformat-security -fstack-protector -fPIE"
CXXFLAGS=$CFLAGS
CONFIGURE="./configure --prefix=/install"
MAKE="make -j4"
######## ####################################################################
# ZLIB # ####################################################################
######## ####################################################################
function build_zlib()
{
gpg --fetch-keys $ZLIB_KEYS
mkdir $SRC/zlib && cd $SRC/zlib
if [ ! -f $ZLIB.tar.gz ]; then
$WGET https://zlib.net/$ZLIB.tar.gz
$WGET https://zlib.net/$ZLIB.tar.gz.asc
fi
tar zxvf $ZLIB.tar.gz
cd $ZLIB
LDFLAGS=$LDFLAGS \
CPPFLAGS=$CPPFLAGS \
CFLAGS=$CFLAGS \
CXXFLAGS=$CXXFLAGS \
./configure \
--prefix=/install
$MAKE
make install DESTDIR=$BASE
}
########### ##################################################################
# MBEDTLS # ##################################################################
########### ##################################################################
function build_mbedtls()
{
mkdir -p $SRC/polarssl && cd $SRC/polarssl
if [ ! -f $MBEDTLS.tar.gz ]; then
$WGET https://github.com/ARMmbed/mbedtls/archive/$MBEDTLS.tar.gz
fi
sha512=`${SHASUM} -a 512 -p ${MBEDTLS}.tar.gz | cut -d' ' -f 1`
if [ "${MBEDTLS_SHA512}" = "${sha512}" ]; then
echo "[+] sha-512 verified ok"
else
echo "[!] problem with sha-512 verification"
exit 1
fi
tar zxvf $MBEDTLS.tar.gz
cd mbedtls-$MBEDTLS
mkdir -p build
cd build
cmake ..
$MAKE
make install DESTDIR=$BASE/install
}
######## ####################################################################
# LZO2 # ####################################################################
######## ####################################################################
function build_lzo2()
{
mkdir $SRC/lzo2 && cd $SRC/lzo2
if [ ! -f $LZO.tar.gz ]; then
$WGET http://www.oberhumer.com/opensource/lzo/download/$LZO.tar.gz
fi
sha1=`$SHASUM $LZO.tar.gz | cut -d' ' -f 1`
if [ "${LZO_SHA1}" = "${sha1}" ]; then
echo "[+] sha1 verified ok"
else
echo "[!] problem with sha1 verification"
exit 1
fi
tar zxvf $LZO.tar.gz
cd $LZO
LDFLAGS=$LDFLAGS \
CPPFLAGS=$CPPFLAGS \
CFLAGS=$CFLAGS \
CXXFLAGS=$CXXFLAGS \
$CONFIGURE --enable-static --disable-debug
$MAKE
make install DESTDIR=$BASE
}
########### #################################################################
# OPENVPN # #################################################################
########### #################################################################
function build_openvpn()
{
mkdir $SRC/openvpn && cd $SRC/openvpn
gpg --fetch-keys $OPENVPN_KEYS
if [ ! -f $OPENVPN.tar.gz ]; then
$WGET https://build.openvpn.net/downloads/releases/$OPENVPN.tar.gz
$WGET https://build.openvpn.net/downloads/releases/$OPENVPN.tar.gz.asc
fi
gpg --verify $OPENVPN.tar.gz.asc && echo "[+] gpg verification ok"
tar zxvf $OPENVPN.tar.gz
cd $OPENVPN
MBEDTLS_CFLAGS=-I$BASE/install/usr/local/include/ \
MBEDTLS_LIBS="$DEST/usr/local/lib/libmbedtls.a $DEST/usr/local/lib/libmbedcrypto.a $DEST/usr/local/lib/libmbedx509.a" \
LDFLAGS=$LDFLAGS \
CPPFLAGS=$CPPFLAGS \
CFLAGS="$CFLAGS -I$BASE/install/usr/local/include" \
CXXFLAGS=$CXXFLAGS \
$CONFIGURE \
--disable-plugin-auth-pam \
--with-crypto-library=mbedtls \
--enable-small \
--disable-debug
$MAKE LIBS="-all-static -lz -llzo2"
make install DESTDIR=$BASE/openvpn
mkdir -p $BASE/sbin/
cp $BASE/openvpn/install/sbin/openvpn $BASE/sbin/$OPENVPN
strip $BASE/sbin/$OPENVPN
}
function build_all()
{
echo "[+] Building" $OPENVPN
build_zlib
build_lzo2
build_mbedtls
build_openvpn
}
function main()
{
if [[ $platform == 'linux' ]]; then
build_all
fi
if [[ $platform == 'osx' ]]; then
build_all
fi
}
main "$@"
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