317 lines
10 KiB
Kotlin
317 lines
10 KiB
Kotlin
package org.hso.texturesyncclient.controller.net
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import com.google.gson.*
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import javafx.scene.image.Image
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import org.hso.texturesyncclient.model.Sha256
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import org.hso.texturesyncclient.model.Texture
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import java.io.*
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import java.lang.IllegalArgumentException
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import java.lang.RuntimeException
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import java.net.*
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import java.util.*
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@Suppress("MemberVisibilityCanBePrivate")
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class Connection(val address: InetAddress, val port: Int = 10796) : Closeable {
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var socket: Socket? = null
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var output: DataOutputStream? = null
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var input: DataInputStream? = null
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@Throws(IOException::class)
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@Synchronized
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private fun getStreams(): Pair<DataInputStream, DataOutputStream> {
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val i: DataInputStream
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val o: DataOutputStream
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if (socket == null || !socket!!.isConnected) {
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val sock = Socket(address, port)
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i = DataInputStream(BufferedInputStream(sock.getInputStream()))
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o = DataOutputStream(BufferedOutputStream(sock.getOutputStream()))
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input = i
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output = o
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socket = sock
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} else {
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i = input!!
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o = output!!
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}
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return Pair(i, o)
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}
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@Throws(IOException::class, ConnectionException::class)
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@Synchronized
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fun ping() {
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val io = getStreams()
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val obj = JsonObject()
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obj.add("ping", JsonObject())
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JsonPackage(obj).write(io.second)
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when (val pkg = Package.read(io.first)) {
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is JsonPackage -> return
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is BinaryPackage -> throw ConnectionUnexpecedPacketException()
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is ErrorPackage -> throw ConnectionErrorException(pkg)
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else -> throw RuntimeException("Unreachable")
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}
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}
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@Throws(IOException::class, ConnectionException::class)
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@Synchronized
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fun query(query : Array<String>) : Array<Texture> {
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val io = getStreams()
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val obj = JsonObject()
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obj.add("query", {
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val inner = JsonObject()
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inner.add("query", {
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val array = JsonArray()
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for(queryString in query) {
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array.add(queryString)
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}
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array
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}())
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inner
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}())
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JsonPackage(obj).write(io.second)
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when (val pkg = Package.read(io.first)) {
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is JsonPackage -> {
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try {
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return Gson().fromJson<Array<InternalTexture>>(pkg.content, Array<InternalTexture>::class.java).map {
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tex -> tex.toTexture()
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}.toTypedArray()
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} catch (e : JsonSyntaxException ){
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throw ConnectionInvalidJsonException()
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}
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}
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is BinaryPackage -> throw ConnectionUnexpecedPacketException()
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is ErrorPackage -> throw ConnectionErrorException(pkg)
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else -> throw RuntimeException("Unreachable")
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}
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}
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@Throws(IOException::class, ConnectionException::class)
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@Synchronized
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fun getTextureById(id : UUID) : Optional<Texture> {
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val io = getStreams()
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val obj = JsonObject()
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obj.add("get_texture", {
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val inner = JsonObject()
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inner.addProperty("id", id.toString())
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inner
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}())
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JsonPackage(obj).write(io.second)
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when (val pkg = Package.read(io.first)) {
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is JsonPackage -> {
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return if (pkg.content.isJsonNull) {
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Optional.empty()
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} else {
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try {
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Optional.of(
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Gson()
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.fromJson<InternalTexture>(pkg.content, InternalTexture::class.java)
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.toTexture()
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)
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} catch (e : JsonSyntaxException ){
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throw ConnectionInvalidJsonException()
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}
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}
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}
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is BinaryPackage -> throw ConnectionUnexpecedPacketException()
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is ErrorPackage -> throw ConnectionErrorException(pkg)
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else -> throw RuntimeException("Unreachable")
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}
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}
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@Throws(IOException::class, ConnectionException::class)
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@Synchronized
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fun getTextureByName(name : String) : Optional<Texture> {
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val io = getStreams()
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val obj = JsonObject()
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obj.add("get_texture", {
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val inner = JsonObject()
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inner.addProperty("name", name)
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inner
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}())
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JsonPackage(obj).write(io.second)
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when (val pkg = Package.read(io.first)) {
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is JsonPackage -> {
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return if (pkg.content.isJsonNull) {
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Optional.empty()
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} else {
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try {
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Optional.of(
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Gson()
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.fromJson<InternalTexture>(pkg.content, InternalTexture::class.java)
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.toTexture()
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)
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} catch (e : JsonSyntaxException ){
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throw ConnectionInvalidJsonException()
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}
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}
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}
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is BinaryPackage -> throw ConnectionUnexpecedPacketException()
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is ErrorPackage -> throw ConnectionErrorException(pkg)
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else -> throw RuntimeException("Unreachable")
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}
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}
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@Throws(IOException::class, ConnectionException::class)
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@Synchronized
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fun getTextureFile(hash : Sha256) : ByteArray {
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val io = getStreams()
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val obj = JsonObject()
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obj.add("get_texture_file", {
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val inner = JsonObject()
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inner.addProperty("texture_hash", hash.toString())
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inner
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}())
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JsonPackage(obj).write(io.second)
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when (val pkg = Package.read(io.first)) {
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is JsonPackage -> throw ConnectionUnexpecedPacketException()
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is BinaryPackage -> return pkg.content
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is ErrorPackage -> throw ConnectionErrorException(pkg)
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else -> throw RuntimeException("Unreachable")
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}
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}
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@Throws(IOException::class, ConnectionException::class)
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@Synchronized
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fun getTexturePreview(hash : Sha256) : Image {
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val io = getStreams()
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val obj = JsonObject()
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obj.add("get_texture_file", {
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val inner = JsonObject()
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inner.addProperty("texture_hash", hash.toString())
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inner.addProperty("desired_format", "jpeg")
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inner
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}())
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JsonPackage(obj).write(io.second)
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when (val pkg = Package.read(io.first)) {
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is JsonPackage -> throw ConnectionUnexpecedPacketException()
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is BinaryPackage -> {
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return Image(ByteArrayInputStream(pkg.content))
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}
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is ErrorPackage -> throw ConnectionErrorException(pkg)
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else -> throw RuntimeException("Unreachable")
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}
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}
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@Throws(IOException::class, ConnectionException::class, IllegalArgumentException::class)
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@Synchronized
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private fun replaceTexture(old: Texture?, new : Texture?, image : ByteArray? ) {
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val io = getStreams()
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val obj = JsonObject()
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obj.add("replace_texture", {
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val inner = JsonObject()
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if(old != null) {
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inner.add("old", Gson().toJsonTree(InternalTexture(old), InternalTexture::class.java))
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} else {
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inner.add("old", null)
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}
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if(new != null) {
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inner.add("new", Gson().toJsonTree(InternalTexture(new), InternalTexture::class.java))
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} else {
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inner.add("new", null)
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}
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inner
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}())
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JsonPackage(obj).write(io.second)
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when (val pkg = Package.read(io.first)) {
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is JsonPackage -> {
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if (pkg.content == JsonPrimitive(true)) {
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// everthing is fine!
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return
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} else if (image != null) {
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// should be { "get_texture_file": { texture_hash : <Hash> }}
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// we don't check, since there is no good way to handle it.
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BinaryPackage(image).write(io.second)
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when (val ipkg = Package.read(io.first)) {
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is JsonPackage -> {
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if(ipkg.content != JsonPrimitive(true)) {
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// Protokoll Assertion failed
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throw ConnectionUnexpecedPacketException()
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}
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}
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is BinaryPackage -> throw ConnectionUnexpecedPacketException()
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is ErrorPackage -> throw ConnectionErrorException(ipkg)
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else -> throw RuntimeException("Unreachable")
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}
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} else {
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ErrorPackage(404, "Texture not found!").write(io.second)
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close() // gets re-opened on next request.
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throw IllegalArgumentException("Image Argument was needed.")
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}
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}
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is BinaryPackage -> throw ConnectionUnexpecedPacketException()
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is ErrorPackage -> throw ConnectionErrorException(pkg)
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else -> throw RuntimeException("Unreachable")
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}
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}
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@Throws(IOException::class, ConnectionException::class, IllegalArgumentException::class)
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@Synchronized
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fun uploadTexture(texture: Texture, image : ByteArray ) {
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if(texture.textureHash != Sha256(image)) {
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throw IllegalArgumentException("Sha256 of Image does not Match with Texture.")
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}
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replaceTexture(null, texture, image)
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}
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@Throws(IOException::class, ConnectionException::class, IllegalArgumentException::class)
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@Synchronized
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fun updateTexture(old: Texture, new : Texture, image : ByteArray ) {
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if(new.textureHash != Sha256(image)) {
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throw IllegalArgumentException("Sha256 of Image does not Match with Texture.")
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}
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replaceTexture(old, new, image)
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}
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@Throws(IOException::class, ConnectionException::class, IllegalArgumentException::class)
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@Synchronized
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fun deleteTexture(texture : Texture) {
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replaceTexture(texture, null , null)
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}
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@Throws(IOException::class)
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@Synchronized
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override fun close() {
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if (output != null) {
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output!!.close()
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output = null
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}
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if (input != null) {
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input!!.close()
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input = null
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}
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if (socket != null) {
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socket!!.close()
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socket = null
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}
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}
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} |