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/*
* Copyright © 2019 IBM. Bell Canada
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.onap.ccsdk.cds.blueprintsprocessor.ssh.service.echoShell
import org.apache.sshd.common.Factory
import org.apache.sshd.server.Environment
import org.apache.sshd.server.ExitCallback
import org.apache.sshd.server.command.Command
import java.io.BufferedReader
import java.io.IOException
import java.io.InputStream
import java.io.InputStreamReader
import java.io.InterruptedIOException
import java.io.OutputStream
class EchoShellFactory : Factory<Command> {
override fun create(): Command {
return EchoShell()
}
companion object {
val INSTANCE = EchoShellFactory()
}
}
class EchoShell : Command, Runnable {
var `in`: InputStream? = null
private set
var out: OutputStream? = null
private set
var err: OutputStream? = null
private set
private var callback: ExitCallback? = null
var environment: Environment? = null
private set
private var thread: Thread? = null
override fun setInputStream(`in`: InputStream) {
this.`in` = `in`
}
override fun setOutputStream(out: OutputStream) {
this.out = out
}
override fun setErrorStream(err: OutputStream) {
this.err = err
}
override fun setExitCallback(callback: ExitCallback) {
this.callback = callback
}
@Throws(IOException::class)
override fun start(env: Environment) {
environment = env
thread = Thread(this, "EchoShell")
thread!!.isDaemon = true
thread!!.start()
}
override fun destroy() {
thread!!.interrupt()
}
override fun run() {
val r = BufferedReader(InputStreamReader(`in`))
try {
while (true) {
val s = r.readLine() ?: return
out!!.write((s + "\n").toByteArray())
out!!.write("#".toByteArray())
out!!.flush()
if ("exit" == s) {
return
}
}
} catch (e: InterruptedIOException) {
// Ignore
} catch (e: Exception) {
e.printStackTrace()
} finally {
callback!!.onExit(0)
}
}
}
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