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xsk
executable file
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xsk
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#!/bin/sh
#################################################################
# INITIALIZATION
#################################################################
# === Initialization shell envaironment =========================
umask 0022
set -u
unset IFS
export LC_ALL='C'
export PATH="$(command -p getconf PATH)${PATH:+:}:${PATH:-}:$(pwd)/skeleton"
cd $(dirname $0)
# === Define Error termination func =============================
print_usage_and_exit () {
cat <<-__USAGE 1>&2
Usage : ${0##*/} [options]
OPTIONS:
-f
-p <PORT>
-r '<BRE>'
-d <DIR>
-u <USER>
-h <HOST>
-s # SSL
Sun Mar 18 11:41:45 JST 2017
__USAGE
exit 1
}
# === Comfirm existance of required command =====================
if command -v socat >/dev/null; then
CMD_SOCAT='socat'
elif command -v nc >/dev/null; then
CMD_NC='nc'
[ -p /tmp/servepipe ] || {
mkfifo /tmp/servepipe
PIPE='/tmp/servepipe'
}
elif command -v netcat >/dev/null; then
CMD_NETCAT='netcat'
[ -p /tmp/servepipe ] || {
mkfifo /tmp/servepipe
PIPE='/tmp/servepipe'
}
else
echo 'NO COMMAND' 1>&2
exit 1
fi
# === Erase unnecessary pipe ====================================
trap "exit 1" HUP INT PIPE QUIT TERM
trap "rm -f ${PIPE:-}" EXIT
#################################################################
# Parse Arguments
#################################################################
# === Print the usage when "--help" is put ======================
case "$# ${1:-}" in
'1 -h'|'1 --help'|'1 --version') print_usage_and_exit;;
esac
# === Getopts ===================================================
# --- 1.Initialize
PORT=1234
LISTEN="TCP-LISTEN"
# -- 2.get opts
while getopts p:d:r:u:h:s OPT
do
case $OPT in
p) PORT="$OPTARG"
;;
d) DOPT="-d $OPTARG"
;;
r) ROPT="-r $OPTARG"
;;
u) XUSER="$OPTARG"
export XUSER
;;
h) XHOST="$OPTARG"
export XHOST
;;
s) SSL=",verify=0,cert=.xsk/fullchain.pem,key=.xsk/privkey.pem"
LISTEN="OPENSSL-LISTEN"
;;
esac
done
shift $(($OPTIND - 1))
#################################################################
# Run EXOSKELETON
#################################################################
# === Run as a web server =======================================
if [ -n "${CMD_SOCAT:-}" ]; then #
socat ${LISTEN}:${PORT},pktinfo,reuseaddr,fork${SSL:-} \
EXEC:"skeleton/core.sk \
${DOPT:-} ${ROPT:-}" 2>/dev/null #
else #
while : #
do #
cat "$PIPE" | #
${CMD_NC:-}${CMD_NETCAT:-} -l ${PORT} | #
skeleton/core.sk 1>"$PIPE" # #
[ $? != 0 ] && break # #
done #
fi #