66 lines
2.4 KiB
Kotlin
66 lines
2.4 KiB
Kotlin
/*
|
|
* Copyright 2017 Christian Basler
|
|
*
|
|
* 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 ch.dissem.bitmessage.entity.payload
|
|
|
|
import ch.dissem.bitmessage.entity.BitmessageAddress
|
|
import ch.dissem.bitmessage.entity.Plaintext
|
|
import ch.dissem.bitmessage.entity.SignedStreamableWriter
|
|
import java.io.InputStream
|
|
import java.io.OutputStream
|
|
import java.nio.ByteBuffer
|
|
|
|
/**
|
|
* Users who are subscribed to the sending address will see the message appear in their inbox.
|
|
* Broadcasts are version 4 or 5.
|
|
*/
|
|
open class V4Broadcast : Broadcast {
|
|
|
|
override val type: ObjectType = ObjectType.BROADCAST
|
|
|
|
protected constructor(version: Long, stream: Long, encrypted: CryptoBox?, plaintext: Plaintext?) : super(version, stream, encrypted, plaintext)
|
|
|
|
constructor(senderAddress: BitmessageAddress, plaintext: Plaintext) : super(4, senderAddress.stream, null, plaintext) {
|
|
if (senderAddress.version >= 4)
|
|
throw IllegalArgumentException("Address version 3 or older expected, but was " + senderAddress.version)
|
|
}
|
|
|
|
override fun writer(): SignedStreamableWriter = Writer(this)
|
|
|
|
protected open class Writer(
|
|
private val item: V4Broadcast
|
|
) : SignedStreamableWriter {
|
|
|
|
override fun writeBytesToSign(out: OutputStream) {
|
|
item.plaintext?.writer(false)?.write(out) ?: throw IllegalStateException("no plaintext data available")
|
|
}
|
|
|
|
override fun write(out: OutputStream) {
|
|
item.encrypted?.writer()?.write(out) ?: throw IllegalStateException("broadcast not encrypted")
|
|
}
|
|
|
|
override fun write(buffer: ByteBuffer) {
|
|
item.encrypted?.writer()?.write(buffer) ?: throw IllegalStateException("broadcast not encrypted")
|
|
}
|
|
}
|
|
|
|
companion object {
|
|
@JvmStatic
|
|
fun read(input: InputStream, stream: Long, length: Int) =
|
|
V4Broadcast(4, stream, CryptoBox.read(input, length), null)
|
|
}
|
|
}
|