#!/bin/bash

set -e
if [ -z "$O3" ]; then
    echo O3 var must point to ovpn3 tree
    exit 1
fi
if [ -z "$DEP_DIR" ]; then
    echo DEP_DIR var must point to dependency build folder
    exit 1
fi
if [ -z "$DL" ]; then
    echo DL var must point to the download folder
    exit 1
fi

if [ -z "$TARGET" ]; then
    echo TARGET var must be defined
    exit 1
fi

# source vars
. $O3/core/vars/vars-${TARGET}
. $O3/core/deps/lib-versions

# source helper functions
. $O3/core/deps/functions.sh

FNAME=${MBEDTLS_VERSION}.tar.gz
PN=${MBEDTLS_VERSION#*-}
URL=https://github.com/ARMmbed/mbedtls/archive/refs/tags/v${PN}.tar.gz
CSUM=${MBEDTLS_CSUM}

download

# put build targets here
DIST=$(pwd)/mbedtls/mbedtls-$PLATFORM
rm -rf $DIST
mkdir -p $DIST

if [ "$NO_WIPE" = "1" ]; then
    echo RETAIN existing source
    cd $MBEDTLS_VERSION
else
    echo WIPE and reunzip source
    rm -rf $MBEDTLS_VERSION
    [ -z "$DL" ] && DL=~/Downloads
    tar xfz $DL/$MBEDTLS_VERSION.tar.gz
    cd $MBEDTLS_VERSION

    # enable MD4 (needed for NTLM auth)
    perl -pi -e 's/^\/\/// if /#define MBEDTLS_MD4_C/' include/mbedtls/config.h
fi

if [ "x$NO_BUILD" == x1 ]; then
   echo "Not building"
   exit 0
fi

if [[ "x$TARGET" == xlinux* || "x$TARGET" == xosx* ]]; then
    # run unit tests and then clean
    echo RUNNING CHECK
    make check
    echo CLEANING
    make clean
fi

echo BUILDING

# compiler vars
CC=cc
LD=ld
AR="ar rc"
RANLIB=ranlib
[ "$GCC_CMD" ] && CC=$GCC_CMD
[ "$LD_CMD" ] && LD=$LD_CMD
[ "$AR_CMD" ] && AR="$AR_CMD"
[ "$RANLIB_CMD" ] && RANLIB="$RANLIB_CMD"

# build it
SRC=$(pwd)
cd library
rm -f *.o
for c in *.c ; do
    CMD="$CC -I../include -DMBEDTLS_RELAXED_X509_DATE \
         $PLATFORM_FLAGS $(lto_flags $c) $OTHER_COMPILER_FLAGS $LIB_OPT_LEVEL $LIB_FPIC -c $c"
    echo $CMD
    $CMD
done

# create archive
cd $DIST
mkdir library
$AR library/libmbedtls.a $SRC/library/*.o
$RANLIB library/libmbedtls.a 2>&1 | grep -v "has no symbols" || true

# copy headers
mkdir -p include/mbedtls
cp $SRC/include/mbedtls/*.h include/mbedtls/
exit 0
