#!/usr/bin/ksh

echo "
Unrestricted SCP.
"

cmd_check() {
    x=0
    for cmd in $@
    do
        which ${cmd} 2>&1 > /dev/null
        if [ $? -ne 0 ]
        then
            echo "${cmd} Not Found. Either install command or add path location to the PATH variable"
            x=$(( ${x} + 1 ))
        fi
    done
    if [ ${x} -ne 0 ]
    then
        exit ${x}
    fi
}

cmd_check pax mkfifo ssh rm echo cat

if [ $# != 4 ]
then
    echo "--------------------------------------------------------------------------------"
    echo "- This script will copy a directory and all the folders and files.             -"
    echo "- Unlike SCP / tar and gzip there are no file restrictions.                    -"
    echo "- All transfers / and extracts are done on the go, so there is no space        -"
    echo "- requirements to land the data                                                -"
    echo "--------------------------------------------------------------------------------"
    echo " "
    echo "Usage: firo_scp.ksh <dir> <user> <server> <path>"
    echo " "
    exit 1
fi

DIR=${1}
DIRNAME=`echo ${DIR} | sed 's/.*\///g'`
USERNAME=${2}
SERVER=${3}
RPATH=${4}
FIFO=./FSCP.$$

echo "Making a fifo file"
mkfifo -m 644 ${FIFO}

echo "Initiating pax to ${FIFO} fifo for ${DIR}"
pax -wf ${FIFO} -x pax ${DIR} &

echo "Making remote fifo file: Authentication Successful should be displayed"
ssh ${USERNAME}@${SERVER} "mkfifo ${RPATH}/${DIRNAME}.ar"

echo "catting the local ${FIFO} fifo into remote fifo file: Authentication Successful should be displayed"
cat ${FIFO} | ssh ${USERNAME}@${SERVER} "cat > ${RPATH}/${DIRNAME}.ar" &

echo "Initiating remote extract on fifo file: Authentication Successful should be displayed"
ssh ${USERNAME}@${SERVER} "cat ${RPATH}/${DIRNAME}.ar | pax -rxpax"

echo "Removing remote fifo file: Authentication Successful should be displayed"
ssh ${USERNAME}@${SERVER} "rm ${RPATH}/${DIRNAME}.ar"

echo "Removing local ${FIFO} fifo"
rm ${FIFO}