Socks tunnel service for OpenWrt 19.07.2

socks-tunnel

/root/bin/socks_tunnel

#!/bin/bash
trap "stop" SIGTERM SIGINT

if [[ -z $1 ]]; then
    echo 'Please, specify server...'
    exit 1
fi

if [[ -z $2 ]]; then
    echo 'Please, specify proxy port...'
    exit 1
fi

SERVER=$1
PROXY_PORT=$2

SSH_CONTROL_SOCKET="/tmp/${SERVER}.${RANDOM}.socket"

function pid() {
    echo `ssh -S $SSH_CONTROL_SOCKET -O check $SERVER 2>&1 |  awk -F '=' '{print $2}' | awk -F ')' '{print $1}'`
}

function stop() {
    PID=`pid`

    if [ ! -z "$PID" ]; then
        kill $PID
	rm $SSH_CONTROL_SOCKET 2> /dev/null
	exit 0
    fi
}

while true; do
    PID=`pid`

    if [ -z "$PID" ]; then
        ssh -M -S $SSH_CONTROL_SOCKET -o "StrictHostKeyChecking=no" -4 -D *:$PROXY_PORT $SERVER -f -N
    fi

    sleep 3
done

socks-tunnel-service

/etc/init.d/socks_tunnel

#!/bin/bash /etc/rc.common

USE_PROCD=1
START=95
STOP=10

CONFIGURATION=socks_tunnel

handle_instance() {
    local tunnel="$1"
    local server
    local proxy_port

    config_get server $tunnel server
    config_get proxy_port $tunnel proxy_port

    procd_open_instance $tunnel
    procd_set_param command /bin/bash "/root/bin/socks_tunnel" "$server" "$proxy_port"
    procd_set_param respawn ${respawn_threshold:-3600} ${respawn_timeout:-5} ${respawn_retry:-5}
    procd_set_param stdout 1
    procd_set_param stderr 1
    procd_close_instance
}

start_service() {
    config_load "${CONFIGURATION}"
    config_foreach handle_instance tunnel
}

socks-tunnel-service-config

/etc/config/socks_tunnel

config tunnel home_server
        option server 'home_server'
	option proxy_port '9997'

config tunnel remote_server
        option server 'remote_server'
	option proxy_port '9998'

ssh-config

/root/.ssh/config

Host home_server
  HostName nqxcode.redirectme.net
  Port 222
  User root
  IdentityFile /root/.ssh/id_rsa

Host remote_server
  HostName 37.143.10.113
  User root
  IdentityFile /root/.ssh/id_rsa