#!/bin/sh -vx

#
# Script creates wireshark RPM and an separate  RPM with the wireshare lnet/lustre plugins,
# installs and test whether the plugins can be selected as filters.


#
#       H E L P E R    F U N C T I O N S
#


error() {
    local msg="$1"

    [ -n "$msg" ] && echo -e "\n${0##*/}: $msg" >&1

}

fatal() {
#    cleanup
    error "$2"
    exit $1
}

    # Wipe away the temporary build / install directory + content
cleanup () {

    echo "Cleanup ${BUILD_DIR}"
    cd ${BUILD_DIR}
    if [ $? -ne 0 ] ; then
        echo "Can't change to ${BUILD_DIR} for clean-up. No clean-up performed."
	exit 1
    fi
        # remove wireshark source directory and tarball and auxiliary directory to tar plugin sources
    rm -rf wireshark-${WS_VERSION} wireshark-${WS_VERSION}.tar.bz2 ${PLUGIN_RPM_NAME}-${WS_VERSION}/ ${PLUGIN_RPM_NAME}-${WS_VERSION}-root/
}


#
#       M A I N 
#

    # Enable download and compile environment settings
source ${0%/wsbuild}/wsconfig.sh
if [ $? -ne 0 ] ; then
    echo "FAILED"
    fatal 1 "Can't source download and compile evironmnent defined in ${0%/wsbuild}/wsconfig.sh"
fi

    # Check whether prereqisited software is installed
echo "Prerequisite software installations:"
for pkg in $PREREQUISITE_RPMS
do
    echo -e "\tPackage '$pkg'\t installed: \c"
    rpm -q $pkg > /dev/null 2>&1
    if [ $? -ne 0 ] ; then
        echo "NO"
        fatal 1 "RPM (software) '$pkg' not installed. Can't compile wireshark."
    fi
    echo "YES"

done

    # Change CWD to top level build directory
echo -e "Change to top level builddir: \c"
cd $BUILD_DIR
if [ $? -ne 0 ] ; then
    echo "FAILED"
    fatal 1 "Can't change to directory '${BUILD_DIR}'. Make sure that directory exist."
fi
echo "OK"


    # Download wireshark
if [ ! -x /usr/bin/curl ] ; then
    fatal 1 "curl not installed. Can't download wireshark."
fi
ws_file_name=`basename ${WS_SOURCE_URL}`
# echo "ws_file_name: $ws_file_name"
echo -e "Download wireshare source tarball: \c"
    # Download desired wireshark tarball
/usr/bin/curl ${WS_SOURCE_URL} --output ${BUILD_DIR}/${ws_file_name}
if [ $? -ne 0 ] ; then
    echo "FAILED"
    fatal 1 "Can't download wireshark version ${WS_VERSION}. Check configuration."
fi
echo "OK"



echo -e "Inflating wireshark tarball: \c"
${UNTAR} ${ws_file_name}
if [ $? -ne 0 ] ; then
    echo "FAILED"
    fatal 1 "Can't untar file '${ws_file_name}'."
fi
echo "OK"


    # Build wireshark software
cd ${BUILD_DIR}/wireshark-${WS_VERSION}
if [ $? -ne 0 ] ; then
    fatal 1 "Can't change to directory '${BUILD_DIR}/wireshark-${WS_VERSION}'."
fi


    # Executing configure first to create the make file and 
    # rpm spec file. Procedure is a bit ood, since `make rpm-package' 
    # is running configure again.
echo -e "Execute wireshark's configure script: \c"
./configure
if [ $? -ne 0 ] ; then
    echo "FAILED"
    echo "----------- configure output ---------------------"
    cat Configure-$$.log
    echo "--------------------------------"
    fatal 1 "configure script in ${BUILD_DIR}/wireshark-${WS_VERSION} stops with errors"
fi
echo "OK"


    # Currently code works distribution using RPM for package management only, i.e.:
    # for RHEL/CentOS, SLES (suse)
    #
    # Code to support distributions using debian software packaging
    # have to be added.

    # SLES SP1, 2 specific handling
if [ -r /etc/SuSE-release ] ; then

        # Correct RPM spec file to build correctly:
        # Note: changes are based on wireshark version 1.6.8
        #
        # -1- Adjust BuildRoot macro. 
        #    Otherwise packaging will fail since SuSe expand BuildRoot to '/tmp/...'
        #    Files can't be found by packaging program
        #
        # -2- Correct libdir macro.
        #    Set library prefix to '/usr/lib64'
        #
        # -3- Correct file globing used for packaging library files
        #    Globbing pattern set to '%prefix/lib64/*' in %files section
        #    to capture the accordingly to change -2-
        #
    sed -e "s#\(BuildRoot:[[:space:]]*\)/[a-zA-Z0-9_]*\(/wireshark-%{PACKAGE_VERSION}-root\)#\1${BUILD_DIR}packaging/rpm/BUILD\2#" \
        -e 's#\(.* \./configure .*\)#\1 --libdir=/usr/lib64#' \
        -e 's#^\(%prefix/lib\)/\*#\164/\*#' ./packaging/rpm/SPECS/wireshark.spec > new-$$.spec
        if [ $? -ne 0 ] ; then
            fatal 1 "Can't modify wireshark SPEC file to build under SLES"
        fi
            # Move modified SPEC into effect
        mv new-$$.spec ./packaging/rpm/SPECS/wireshark.spec
        if [ $? -ne 0 ] ; then
            fatal 1 "Can't copy modified wireshark SPEC file (SLES to ${BUILD_DIR}/packaging/rpm/SPECS/wireshark.spec"
        fi

fi

    
echo -e "Create wireshark RPM: \c"
make rpm-package
if [ $? -ne 0 ] ; then
    echo "FAILED"
    echo "----------- make rpm-package output ---------------------"
    cat make-rpm-$$.log
    echo "--------------------------------"
    fatal 1 "make rmp-package failed in  ${BUILD_DIR}/wireshark-${WS_VERSION}"
fi
# Package successfully built in ${BUILD_DIR}/wireshark-${WS_VERSION}/packaging/rpm/RPMS.
echo "OK"


cd ${BUILD_DIR}
if [ $? -ne 0 ] ; then
    fatal 1 "Can't change into directory ${BUILD_DIR}"
fi

PLUGINS_LIBDIR=''
    # SLES SP1, 2 installs 64Bit libs and binaries into /usr/lib64
    # 
if [ -r /etc/SuSE-release ] ; then

    PLUGINS_LIBDIR='/usr/lib64/wireshark/plugins/%ver/*'
else
    PLUGINS_LIBDIR='/usr/lib/wireshark/plugins/%ver/*'
fi

echo -e "Create Lustre/LNet wireshark plugin RPM: \c"

    # Insert the associated version, name and build directory info
    # to the SPEC template. Use '#' 
    # as delimiters since path info will be substituted
sed -e "s#XXX-TOP-LEVEL-BUILD-DIR-XXX#${BUILD_DIR}#" \
    -e "s#XXX-LUSTRE-PLUGIN-VERSION-XXX#${WS_VERSION}#" \
    -e "s#XXX-LUSTRE-PLUGIN-RPM-NAME-XXX#${PLUGIN_RPM_NAME}#" \
    -e "s#XXX-LUSTRE-PLUGIN-LIBDIR-XXX#${PLUGINS_LIBDIR}#" \
    lustre-wireshark-plugins-template.spec > ${PLUGIN_RPM_NAME}.spec
if [ $? -ne 0 ] ; then
    echo "FAILED"
    fatal 1 "Can't create SPEC file for Lustre/LNet wireshark plugins"
fi


    # Create tarball containing source files plugins to be used rpmbuid mechanism
if [ -d ${PLUGIN_RPM_NAME}-${WS_VERSION} ] ; then
    rm -rf lustre-wireshark-plugins-1.6.8
    if [ $? -ne 0 ] ; then
        fatal 1 "Can't cleanup auxiliary directory to create tarball of Lustre/LNet plugins"
    fi
fi
    # Create auxiliary directory
mkdir ${PLUGIN_RPM_NAME}-${WS_VERSION}
if [ $? -ne 0 ] ; then
    echo "FAILED"
    fatal 1 "Can't create packaging directory to create source tarball for lustre wireshark plugins"
fi
cp README Makefile packet-lnet.c packet-lustre.c ${PLUGIN_RPM_NAME}-${WS_VERSION}
if [ $? -ne 0 ] ; then
    echo "FAILED"
    fatal 1 "Can't copy files for rpm source tar ball into helper directory for Lustre/LNet wireshark plugins"
fi

$TAR ${PLUGIN_RPM_NAME}-${WS_VERSION}.tar.bz2 ${PLUGIN_RPM_NAME}-${WS_VERSION}/
if [ $? -ne 0 ] ; then
    echo "FAILED"
    fatal 1 "Can't create rpm source tar ball for Lustre/LNet wireshark plugins"
fi

    # install source tarball into build directory
cp ${PLUGIN_RPM_NAME}-${WS_VERSION}.tar.bz2 ${BUILD_DIR}/wireshark-${WS_VERSION}/packaging/rpm/SOURCES
if [ $? -ne 0 ] ; then
    echo "FAILED"
    fatal 1 "Can't copy source tar ball for Lustre/LNet wireshark plugins build directory"
fi

rpmbuild -bb --define "_topdir ${BUILD_DIR}/wireshark-${WS_VERSION}/packaging/rpm" ${PLUGIN_RPM_NAME}.spec
if [ $? -ne 0 ] ; then
    echo "FAILED"
    fatal 1 "Can't create RPM for Lustre/LNet wireshark plugins"
fi

exit 0