SecurityOptions.ts

/*********************************************************************
 * Copyright (c) Intel Corporation 2019
 * SPDX-License-Identifier: Apache-2.0
 * Author : Ramu Bachala
 **********************************************************************/

import { type ICommunicator, type IStateProcessor } from '../Interfaces'

/**
 * Get security options from remote device. Send auth type.
 */
class SecurityOptions implements IStateProcessor {
  wsSocket: ICommunicator
  next: IStateProcessor
  updateRFBState: any
  constructor(comm: ICommunicator, updateRFBState: (state: number) => void) {
    this.wsSocket = comm
    this.updateRFBState = updateRFBState
  }

  processState(acc: string): number {
    // acc is the accumulated byte encoded string so far
    let cmdSize: number
    if (acc.length >= 1) {
      // Getting security options
      cmdSize = acc.charCodeAt(0) + 1
      this.wsSocket.send(String.fromCharCode(1)) // Send the "None" security type. Since we already authenticated using redirection digest auth, we don't need to do this again.
      this.updateRFBState(2)
      return cmdSize
    }
    return 0
  }
}

export { SecurityOptions }