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#

#   Receive a file and save is locally

#   Script run by ssh to receive a compressed file and to save it

#   Works in bash and dash

#

#   Assumes that gzip output as stdin

#

#set -x

set -e

error() {

    echo ERROR: $*

    exit 1;

}

# User options

while getopts D arg ; do

    case $arg in

        D) set -x ;;

        *) error Unknown option: $arg ;;

    esac

done

shift $(($OPTIND - 1))

# User arguments

fname=${1:?Need file name}

dpkg="dpkg_archive"

[ -d $dpkg ] || error dpkg_archive not found

#

#   Names of working directories

#

metadir="$dpkg/.dpkg_archive"

tmpfile="$metadir/${fname}.NEWTMP"

newfile="$metadir/${fname}"

#

#   Create package metadata directory

#   Ensure its writable

mkdir -p "$metadir"

chmod u+w "$metadir"

#

#   unzip the file into a temp name

gunzip -c -d -- > "$tmpfile"

#

#   Now that the new file has arrived error free

#   Rename the temp file to the new file

#

chmod a+w "$newfile" || true

rm -f "$newfile"

mv "$tmpfile" "$newfile"

# Fix up permissions on the file and directory

chmod a-w "$newfile"

chmod go-w "$metadir"

chmod a+rx "$metadir"