prep-gsissh

#! /bin/sh

openssh_version=7.3p1
gsissh_version=${openssh_version}c
openssh_tarball=openssh-${openssh_version}.tar.gz
Source0=http://ftp.openbsd.org/pub/OpenBSD/OpenSSH/portable/${openssh_tarball}

# Patch0 is the HPN-SSH patch to Portable OpenSSH
Patch0=https://github.com/globus/gsi-openssh/releases/download/${gsissh_version}/openssh-7_3_P1-hpn-14.12.patch
# Patch1 is the iSSHD patch to HPN-SSH
Patch1=https://github.com/globus/gsi-openssh/releases/download/${gsissh_version}/hpn-14.12-isshd.v3.19.1.patch
# Patch2 is the GSI patch to be applied on top of the iSSHD patch
Patch2=https://github.com/globus/gsi-openssh/releases/download/${gsissh_version}/hpn_isshd-gsi.${gsissh_version}.patch

Patches="${Patch0} ${Patch1} ${Patch2}"
Sources="${Patches} ${Source0}"

package_output="$(dirname "$0")/packaging/package-output"
gsissh_sourcedir="$(dirname $0)/gsi_openssh/source"
unpacked_file="${gsissh_sourcedir}/gsissh.unpacked" 

if command -v curl > /dev/null 2>&1; then
    download()
    {
        curl -Ls "$1" > "${2}.tmp"
        mv "${2}.tmp" "${2}"
    }
elif command -v wget > /dev/null 2>&1; then
    download()
    {
        wget -q -O "${2}.tmp" "$1"
        mv "${2}.tmp" "${2}"
    }
else
    download()
    {
        echo "Can't download ${1}" 1>&2
        exit 1
    }
fi

(
mkdir -p "${package_output}" "${gsissh_sourcedir}"

for f in ${Sources}; do
    source_path="${package_output}/$(basename "${f}")"

    if [ ! -f "${source_path}" ]; then
        download "${f}" "${source_path}"
    fi
done

if [ ! -f "${unpacked_file}" ] || \
   [ x$(cat "${unpacked_file}") != x"${openssh_tarball}" ]; then
    rm -rf "${gsissh_sourcedir}"
    mkdir -p "${gsissh_sourcedir}"
    gzip -dc "${package_output}/${openssh_tarball}" | \
        tar --strip 1 -C "${gsissh_sourcedir}" -xf -
    for p in ${Patches}; do
        patchfile="${package_output}/$(basename "${p}")"
        patch -d "${gsissh_sourcedir}" -p1 < "${patchfile}"
    done
    cat <<-"EOF" >"${gsissh_sourcedir}/configure.gnu"
	#! /bin/sh
	"${0%.gnu}" "$@" --with-gsi --sysconfdir="\${prefix}/etc/gsissh"
	EOF
    chmod a+x "${gsissh_sourcedir}/configure.gnu"
    echo "${openssh_tarball}" > "${unpacked_file}"
fi
) 1>&2
echo "m4_define([gsissh_version], [${gsissh_version}])" > gsi_openssh/version.m4.new

if [ ! -f gsi_openssh/version.m4 ] || \
   ! cmp -s gsi_openssh/version.m4 gsi_openssh/version.m4.new; then
   mv gsi_openssh/version.m4.new gsi_openssh/version.m4 
else
   rm -f gsi_openssh/version.m4.new 
fi