Reboot Grandstream ATA

gsreboot.sh

#!/opt/bin/bash
#
# gsreboot.sh v2.1 - Script to reboot Grandstream ATA
#
# @author: Walter Purcaro <[email protected]>
# @dependencies: bash coreutils-base64 curl grep logger sed
#
###############################################################################

name="$(basename "$0")[$$]"

rebooting=false
quiet=false

COOKIEFILE="/tmp/cookies.txt"
MAXREDIRS=10

gs_echo () {
  echo "$1"

  if ! $quiet; then
    logger -t "$name" "$1"
  fi
}

gs_error () {
  echo "ERROR: $1"
  logger -t "$name" -p "error" "$1"
  exit 1
}

gs_version() {
  echo "gsreboot v2.1 by Walter Purcaro <[email protected]>"
  echo "https://gist.github.com/vuolter/70fdd9a0b1a8c57026951a159e1d65e0"
}

gs_help() {
    if [ -n "$1" ]; then
      echo "$1"
      logger -t "$name" -p "error" "$1"
    else
      echo "Script to reboot Grandstream ATA"
    fi

    echo
    echo -e "Usage: $name [-q] [-v] [-h] <ip> <username> <password>"
    echo -e "  -q  \t\t\t  Silent mode (shows only exit status message, no syslog logging)"
    echo -e "  -v  \t\t\t  Print version info and exit"
    echo -e "  -h  \t\t\t  Print usage info and exit"
    echo
}

gs_getopts () {
  OPTSTRING="qh"

  while getopts $OPTSTRING opt; do
    case "$opt" in
      q)
        quiet=true
        ;;
      v)
        gs_version
        exit 2
        ;;
      h)
        gs_help
        exit 2
        ;;
      :)
        gs_help "Option -$OPTARG requires an argument"
        exit 1
        ;;
      ?)
        gs_help "Invalid option: -$OPTARG"
        exit 1
        ;;
    esac
  done

  shift $((OPTIND - 1))

  ip="$1"

  if [ "$#" -ne 3 ]; then
    if [ -z "$1" ]; then
      msg="No argument IP address provided"
    elif [ -z "$2" ]; then
      msg="No argument username provided"
    elif [ -z "$3" ]; then
      msg="No argument password provided"
    fi

    gs_help "$msg"
    exit 1
  fi

  user="$2"
  pw="$(echo -n "$3" | base64)"
}

gs_login () {
  code="$(curl \
    -fsS \
    -X POST \
    -c "$COOKIEFILE" \
    -d "username=$user" \
    -d "P2=$pw" \
    -d "Login=Login" \
    -d "gnkey=0b82" \
    -o /dev/null \
    -w "%{http_code}" \
    --url "http://$ip/cgi-bin/dologin" \
    --max-redirs "$MAXREDIRS")"

  if [ "${code:0:1}" = 2 ]; then
    session="$(
      curl -fsS -b "$COOKIEFILE" --url "http://$ip/cgi-bin/gr909" --max-redirs "$MAXREDIRS" | 
      grep -E -o -m 1 'session_token.*value="[0-9a-z]+"' | 
      sed -r 's/.*"([0-9a-z]+)".*/\1/'
    )"
  fi

  if [ -z "$session" ] && ! $quiet; then
    gs_error "Cannot login to Grandstream device $ip"
  fi
}

gs_reboot () {
  rebooting=$(
    curl \
      -fsS \
      -X POST \
      -b "$COOKIEFILE" \
      -d "session_token=$session" \
      --url "http://$ip/cgi-bin/rs" \
      --max-redirs "$MAXREDIRS" | 
    grep -q 'The device is rebooting now' &&
    echo true ||
    echo false
  )

  if ! $rebooting && ! $quiet; then
    gs_error "Cannot reboot Grandstream device $ip"
  fi
}

gs_exit () {
  rm -f "$COOKIEFILE"

  if $rebooting; then
    gs_echo "Restarting Grandstream device $ip"
  else
    gs_error "Cannot restart Grandstream device $ip"
  fi
}

trap gs_exit EXIT

gs_getopts "$@"
gs_login
gs_reboot