mccopy

#!/bin/sh

set -e

PREREQ=""

prereqs () {
    echo "$PREREQ"
}

case $1 in
    prereqs)
        prereqs
        exit 0
        ;;
esac

echo "DESTDIR=\"${DESTDIR}\""

# Function to recursively find dependencies using ldd
recursive_ldd() {
    binary="$1"
    visited="$2"
    dependencies=""

    # Check if the binary has already been visited
    case "$visited" in
        *"$binary"*) return ;;
    esac

    # Add binary to visited list
    visited="$visited $binary"

    # Find dependencies using ldd and awk (first approach)
    libs=$(ldd "$binary" 2>/dev/null | awk '/^\s*\// || /^\// {print $1}')

    # Find dependencies using ldd and awk (second approach)
    libs2=$(ldd "$binary" | awk '/=>/{print $(NF-1)}')

    # Merge results, remove empty and whitespace lines, and sort
    all_libs=$(printf "%s\n%s\n" "$libs" "$libs2" | grep -v '^[[:space:]]*$' | sort -u)

    # Iterate over dependencies
    for lib in $all_libs; do
        # Skip empty lines
        [ -z "$lib" ] && continue
        
        # Add dependency to the list
        dependencies="$dependencies $lib"

        # Recursively find dependencies of this dependency
        dependencies="$dependencies $(recursive_ldd "$lib" "$visited")"
    done

    # Output the list of dependencies
    [ -n "$dependencies" ] && echo "$dependencies" | tr ' ' '\n' | sort -u | grep -v '^[[:space:]]*$' 
}



copy_binary_and_dependencies() {

    if [ -n "${1}" ]; then
        binary="${1}"
    else
        echo "ERROR: No parameter specified at copy_binary_and_dependencies()."
        exit 1
    fi


    if [ -e "${binary}" ]; then

        echo "Copying $binary..."
        cp --parents "${binary}" "${DESTDIR}"
        
        # there are some non-zero exit statuses in the recursive_ldd but it works
        set +e
        dependencies=$(recursive_ldd "$binary" "")
        set -e

        echo "Copying dependencies of $binary..."
        for file in ${dependencies}; do
            # Copy the file recursively to the destination directory
            echo "Copying '${file}'..."
            cp --parents "${file}" "${DESTDIR}"
        done

    else

        echo "The program $binary is not found, we will not include it in the inintrd image."

    fi

}

#DESTDIR="/tmp/DESTDIR_TEST" # DEBUG

# Run recursive ldd
binary="/usr/bin/mc"

if [ -e "${binary}" ]; then

    echo "We include mc and mcedit..."
    
    copy_binary_and_dependencies "${binary}"

    others="
    /lib/terminfo/l/linux
    /usr/bin/mcedit
    /usr/bin/mcdiff
    /usr/bin/mcview
    /lib/terminfo/l/linux
    /usr/share/mc/mc.charsets
    /etc/mc/mcedit.menu
    /usr/share/mc/skins/default.ini
    "

    for file in ${others}; do
        echo "Copying '${file}'..."
        cp -a --parents "${file}" "${DESTDIR}"
    done

    echo "Copying /usr/lib/mc directory..."
    cp -r -a "/usr/lib/mc" "${DESTDIR}/usr/lib/"

    echo "Copying /usr/share/mc directory..."
    cp -r -a "/usr/share/mc" "${DESTDIR}/usr/share/"

    echo "Copying /etc/mc directory..."
    cp -r -a "/etc/mc" "${DESTDIR}/etc"

    # mcdiff does not work without diff

    binary="/usr/bin/diff"

    copy_binary_and_dependencies "${binary}"

else
    echo "WARNING: $binary is not installed, we will not include it in the inintramfs. "
    echo "         The program mcedit is useful for editing config files."

fi


binary="/usr/bin/sdmem"

if [ -e "${binary}" ]; then

  echo "We include sdmem..."
  copy_binary_and_dependencies "${binary}"
  
else
    echo "WARNING: $binary is not installed, we will not include it in the inintramfs. "
    echo "         We use sdmem to clean the ram after the encrypted keychain is closed."
fi