daemon.sh

#!/system/bin/sh

MODDIR=${0%/*}
SOCAT="$MODDIR/bin/socat"

USER_SOCK="/data/local/host.user.sock"
ROOT_SOCK="/data/local/host.root.sock"
LOG="/data/local/hostsocket.log"

log() {
    echo "[$(date)] $*" >> "$LOG"
}

cleanup() {
    log "Exiting..."
    rm -f "$USER_SOCK" "$ROOT_SOCK"
}

trap cleanup EXIT
cleanup

start_user() {
    log "Starting USER socket"
    $SOCAT UNIX-LISTEN:$USER_SOCK,mode=660,fork EXEC:"su shell -c /system/bin/sh",pty,stderr,setsid,sigint,sane
}

start_root() {
    log "Starting ROOT socket"
    $SOCAT UNIX-LISTEN:$ROOT_SOCK,mode=660,fork EXEC:"su -c /system/bin/sh",pty,stderr,setsid,sigint,sane
}

while true; do
    start_user &
    U_PID=$!

    start_root &
    R_PID=$!

    wait $U_PID
    log "User socket died"

    wait $R_PID
    log "Root socket died"

    log "Restarting in 1s..."
    sleep 1
done