#!/bin/bash
# configuration
HOST=""
PORT=
PASSWORD=""
REQUESTID=$RANDOM
COMMAND="$1 $2 $3 $4 $5"


# define functions
socksend ()
{

    REQUESTID="1"
    TYPE="$2"
    PAYLOAD="$PAYLOAD"
    
    echo "Host: $HOST"
    echo "Port: $PORT"
    echo "sending: $PAYLOAD"
    #echo -ne "$SENDME" >&5 &
    DATA=$REQUESTID
    #+$TYPE+$PAYLOAD
    #LANG=C LC_ALL=C  # Googled this. Not sure how this line works but was intended to make length in bytes. Redundant now.
    LENGTH=`echo -n $DATA | wc -m`
    #${#DATA}
    #LANG=$oLang LC_ALL=$oLcAll # Googled this. Not sure how this line works but was intended to make length in bytes. Redundant now.
    echo "Length: $LENGTH"
    printf '$LENGTH$DATA%s\0%s\0' >&5 &
}

sockread ()
{
    LENGTH="$1"
    RETURN=`dd bs=$1 count=1 <&5`
}
#2> /dev/null
echo "trying to open socket"
# try to connect
if ! exec 5<> /dev/tcp/$HOST/$PORT; then
  echo "`basename $0`: unable to connect to $HOST:$PORT"
  exit 1
fi
echo "socket is open"

# send login request
TYPE=3
PAYLOAD="$PASSWORD"
echo "Payload: $PAYLOAD"
socksend $REQUESTID $TYPE $PAYLOAD

# read 7 bytes for "success"
sockread 1
echo "RETURN: $RETURN"

echo "sending part 2"
TYPE=2
PAYLOAD="$COMMAND"
echo "Payload: $PAYLOAD"
socksend $REQUESTID $TYPE $PAYLOAD

# read 7 bytes for "success"
sockread 1
echo "RETURN: $RETURN"

trying to open socket 
socket is open 
Payload: ######### 
Host: #.#.#.# 
Port: ##### 
sending: ######## 
Length: 1 0+0 
records in 0+0 
records out 0 
bytes copied, 0.00115984 s, 0.0 kB/s 
RETURN:

 sending part 2 
Payload: time set night 
Host: #.#.#.# 
Port: ##### 
sending: time set night
 Length: 1 0+0 
records in 0+0 
records out 0 
bytes copied, 2.9759e-05 s, 0.0 kB/s 
RETURN: