#!/bin/bash /usr/lib/turtle/turtle_module

VERSION="1.0"
DESCRIPTION="Mounts remote File Systems over SSH"
CONF=/tmp/sshfs.form

: ${DIALOG_OK=0}
: ${DIALOG_CANCEL=1}
: ${DIALOG_HELP=2}
: ${DIALOG_EXTRA=3}
: ${DIALOG_ITEM_HELP=4}
: ${DIALOG_ESC=255}

function start {
  if [ -s /etc/config/sshfs ]
  then
    sshfs_host=$(uci get sshfs.host)
    sshfs_port=$(uci get sshfs.port)
    sshfs_user=$(uci get sshfs.user)
    sshfs_path=$(uci get sshfs.path)
    echo sshfs -o idmap=user -C -p "$sshfs_port" "$sshfs_user"@"$sshfs_host":"$sshfs_path" /sshfs/
    sshfs -o idmap=user -C -p "$sshfs_port" "$sshfs_user"@"$sshfs_host":"$sshfs_path" /sshfs/
    echo -n "sshfs started with pid: "; pidof sshfs
  else
    touch /etc/config/sshfs
    echo "sshfs not configured"
  fi
}

function stop {
  fusermount -u /sshfs/
}

function status {
  if pgrep sshfs > /dev/null; then echo "1"; else echo "0"; fi
}

function configure {
  mkdir -p /sshfs/
  if [ -s /etc/config/sshfs ]
  then
    sshfs_host=$(uci get sshfs.host)
    sshfs_port=$(uci get sshfs.port)
    sshfs_user=$(uci get sshfs.user)
    sshfs_path=$(uci get sshfs.path)
  else
    touch /etc/config/sshfs
  fi

  dialog --ok-label "Submit" \
    --help-button \
    --title "SSHFS Configuration" \
    --form "SSHFS (Secure SHell FileSystem)\n\n\
Host: Remote SSH Server.\n\
Port: Remote SSH Server Port (Default: 22).\n\
User: User on remote SSH server.\n\
Path: Path on remote SSH server (blank for users home).\n" 16 60 4\
    "Host:"	1 1	"$sshfs_host"	1 7 48 0 \
    "Port:"	2 1	"$sshfs_port"	2 7 48 0 \
    "User:"	3 1	"$sshfs_user"	3 7 48 0 \
    "Path:"	4 1	"$sshfs_path"	4 7 48 0 \
  2>$CONF

  return=$?

  case $return in
    $DIALOG_OK)
      cat $CONF | { 
        read -r sshfs_host
        read -r sshfs_port
        read -r sshfs_user
        read -r sshfs_path
        if [ -z "$sshfs_port" ]; then
          sshfs_port="22"
        fi
        touch /etc/config/sshfs
        uci set sshfs.host="$sshfs_host"
        uci set sshfs.port="$sshfs_port"
        uci set sshfs.user="$sshfs_user"
        uci set sshfs.path="$sshfs_path"
        uci commit sshfs
        rm $CONF
        clear
      };;
    $DIALOG_CANCEL)
      rm $CONF
      clear
      exit;;
    $DIALOG_HELP)
      dialog --title "Help" \
        --msgbox "sshfs \
SSHFS (Secure SHell FileSystem) is a file system for Linux (and other operating systems with a \
FUSE implementation, such as Mac OS X or FreeBSD) capable of operating on files on a remote \
computer using just a secure shell login on the remote computer. On the local computer where \
the SSHFS is mounted, the implementation makes use of the FUSE (Filesystem in Userspace) kernel \
module. The practical effect of this is that the end user can seamlessly interact with \
remote files being securely served over SSH just as if they were local files on his/her \
computer. On the remote computer the SFTP subsystem of SSH is used.\n\n\
If host is a numeric IPv6 address, it needs to be enclosed in square brackets\
" 20 60
      configure
      ;;
    $DIALOG_ESC)
      clear;;
  esac
}