#!/bin/bash

#+--------------------------------------------------------------------------------------------
#|Description:  This shell script used download and compile openssh for ARM
#|     Author:  GuoWenxue <guowenxue@gmail.com>
#|  ChangeLog:
#|           1, Initialize 1.0.0 on 2011.04.12
#+--------------------------------------------------------------------------------------------

PRJ_PATH=`pwd`
PREFIX_PATH=${PRJ_PATH}/../install/
#PREFIX_PATH=${PRJ_PATH}/install/

LYFTP_SRC=http://master.weike-iot.com:2211/src/

CROSSTOOL=/opt/gcc-aarch32-10.3-2021.07/bin/arm-none-linux-gnueabihf-

function msg_banner()
{
    echo ""
    echo "+-----------------------------------------------------------------------"
    echo "|  $1 "
    echo "+-----------------------------------------------------------------------"
    echo ""
}

function check_result()
{
    if [ $? != 0 ] ; then
       echo ""
       echo "+-----------------------------------------------------------------------"
       echo "|  $1 "
       echo "+-----------------------------------------------------------------------"
       echo ""
       exit ;
    fi
}

function export_cross()
{
    # export cross toolchain
    export CC=${CROSSTOOL}gcc
    export AS=${CROSSTOOL}as
    export AR=${CROSSTOOL}ar
    export LD=${CROSSTOOL}ld
    export NM=${CROSSTOOL}nm
    export RANLIB=${CROSSTOOL}ranlib
    export OBJDUMP=${CROSSTOOL}objdump
    export STRIP=${CROSSTOOL}strip

    # export cross configure 
    export CONFIG_CROSS=" --build=i686-pc-linux --host=arm-linux "

    # Clear LDFLAGS and CFLAGS
    export LDFLAGS=
    export CFLAGS=
}

function modify_config()
{
    #sed -i -e "s|.*SPT_TYPE.*|#define SPT_TYPE SPT_NONE|g" config.h
    #sed -i -e "s|.*USE_BTMP.*|/* #undef USE_BTMP */|g" config.h
    #sed -i -e "s|.*HAS_SHADOW_EXPIRE.*|/* #undef HAS_SHADOW_EXPIRE */|g" config.h
    #sed -i -e "s|.*USE_LINUX_AUDIT.*|/* #undef USE_LINUX_AUDIT */|g" config.h
    sed -i -e "s|.*HAVE___PROGNAME.*|/* #undef HAVE___PROGNAME */|g" config.h
    echo "modify done"
}

function compile_openssh()
{
    SRC_NAME=openssh-8.0p1
    PACK_SUFIX=tar.gz

    if [ -f ${PREFIX_PATH}/sbin/sshd ] ; then
        msg_banner "$SRC_NAME already compile and installed"
        return 0;
    fi

    msg_banner "Start donwload $SRC_NAME "
    if [ ! -f ${SRC_NAME}.${PACK_SUFIX} ] ; then
        #wget https://cdn.openbsd.org/pub/OpenBSD/OpenSSH/portable/${SRC_NAME}.${PACK_SUFIX}
        wget ${LYFTP_SRC}/${SRC_NAME}.${PACK_SUFIX}
        check_result "ERROR: download ${SRC_NAME} failure"
    fi 

    rm -rf ${SRC_NAME}

    tar -xzf ${SRC_NAME}.${PACK_SUFIX}

    cd ${SRC_NAME}

    msg_banner "Start cross compile $SRC_NAME "

    # must --disable-utmpx for lost these  files
    # must --with-audit=debug can not use linux
    # must --without-pie or environ is NULL will case SIGSEGV
    export ac_cv_func_realloc_0_nonnull=yes
    export ac_cv_func_malloc_0_nonnull=yes
    ./configure --prefix=${PREFIX_PATH} ${CONFIG_CROSS} --disable-largefile --disable-pkcs11 --disable-strip \
        --disable-etc-default-login --disable-lastlog --disable-utmp --disable-utmpx --disable-wtmp --without-stackprotect \
        --disable-wtmpx --disable-pututline --disable-pututxline --without-hardening --without-rpath \
        --with-audit=debug --without-pie --without-pam --with-privsep-user=sshd --without-selinux \
        --with-libs --with-zlib=${PREFIX_PATH} --with-ssl-dir=${PREFIX_PATH} --with-ssl-engine 

    check_result "ERROR: configure ${SRC_NAME} failure"

    modify_config

    make && make install

    check_result "ERROR: compile ${SRC_NAME} failure"


    cd -
}


if [ ! -f ${PREFIX_PATH}/lib/libz.a ] ; then
    cd ../zlib
       ./build.sh
    cd -
fi


if [ ! -f ${PREFIX_PATH}/lib/libcrypto.a ] ; then
    cd ../openssl
       ./build.sh
    cd -
fi

export_cross
compile_openssh