Rc4 release

- use openssl to reduce memory footprint
- invalidate everyone's caches again (in order to fix 128 bit SSL on older JREs)
- Add more logging
- Hide secret printouts
- Rebrand

build.gradle

@@ -1,14 +1,14 @@
 plugins {
-  id 'java'
+  id "java"
-  id 'org.jetbrains.kotlin.jvm' version '1.3.72'
+  id "org.jetbrains.kotlin.jvm" version "1.3.72"
-  id 'application'
+  id "application"
-  id 'com.github.johnrengelman.shadow' version '5.2.0'
+  id "com.github.johnrengelman.shadow" version "5.2.0"
   id "com.diffplug.gradle.spotless" version "3.18.0"
 }
 
-group = 'com.mangadex'
+group = "com.mangadex"
-version = '1.0.0-rc3'
+version = "1.0.0-rc4"
-mainClassName = 'mdnet.base.MangadexClient'
+mainClassName = "mdnet.base.MangaDexClient"
 
 repositories {
   mavenCentral()
@@ -16,16 +16,16 @@ repositories {
 }
 
 dependencies {
-  implementation group: 'com.konghq', name: 'unirest-java', version: '3.7.02'
-
   implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8"
+  implementation group: "com.konghq", name: "unirest-java", version: "3.7.02"
 
   implementation group: "org.http4k", name: "http4k-core", version: "$http_4k_version"
   implementation group: "org.http4k", name: "http4k-server-netty", version: "$http_4k_version"
   implementation group: "org.http4k", name: "http4k-client-apache", version: "$http_4k_version"
-  implementation group: 'commons-io', name: 'commons-io', version: '2.7'
+  implementation group: "commons-io", name: "commons-io", version: "2.7"
 
   implementation "ch.qos.logback:logback-classic:$logback_version"
+  runtimeOnly 'io.netty:netty-tcnative-boringssl-static:2.0.30.Final'
 }
 
 java {

src/main/java/mdnet/base/ClientSettings.java

@@ -50,7 +50,7 @@ public final class ClientSettings {
 	public String toString() {
 		return "ClientSettings{" + "maxCacheSizeMib=" + maxCacheSizeMib + ", maxBandwidthMibPerHour="
 				+ maxBandwidthMibPerHour + ", maxBurstRateKibPerSecond=" + maxBurstRateKibPerSecond + ", clientPort="
-				+ clientPort + ", clientSecret='" + clientSecret + '\'' + '}';
+				+ clientPort + ", clientSecret='" + "<hidden>" + '\'' + '}';
 	}
 
 	public static boolean isSecretValid(String clientSecret) {

src/main/java/mdnet/base/MangaDexClient.java

@@ -16,8 +16,8 @@ import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.concurrent.atomic.AtomicReference;
 
-public class MangadexClient {
+public class MangaDexClient {
-	private final static Logger LOGGER = LoggerFactory.getLogger(MangadexClient.class);
+	private final static Logger LOGGER = LoggerFactory.getLogger(MangaDexClient.class);
 
 	// This lock protects the Http4kServer from concurrent restart attempts
 	private final Object shutdownLock = new Object();
@@ -31,16 +31,16 @@ public class MangadexClient {
 	private Http4kServer engine;
 	private DiskLruCache cache;
 
-	public MangadexClient(ClientSettings clientSettings) {
+	public MangaDexClient(ClientSettings clientSettings) {
 		this.clientSettings = clientSettings;
 		this.serverHandler = new ServerHandler(clientSettings);
 		this.statistics = new AtomicReference<>();
 
 		try {
-			cache = DiskLruCache.open(new File("cache"), 2, 3,
+			cache = DiskLruCache.open(new File("cache"), 3, 3,
 					clientSettings.getMaxCacheSizeMib() * 1024 * 1024 /* MiB to bytes */);
 		} catch (IOException e) {
-			MangadexClient.dieWithError(e);
+			MangaDexClient.dieWithError(e);
 		}
 	}
 
@@ -73,10 +73,11 @@ public class MangadexClient {
 				}
 				statistics.set(new Statistics());
 
+				if (engine == null) {
 					if (LOGGER.isInfoEnabled()) {
 						LOGGER.info("Restarting server stopped due to hourly bandwidth limit");
 					}
-				if (engine == null) {
+
 					loginAndStartServer();
 				}
 			} else {
@@ -132,7 +133,7 @@ public class MangadexClient {
 	private void loginAndStartServer() {
 		serverSettings = serverHandler.loginToControl();
 		if (serverSettings == null) {
-			MangadexClient.dieWithError("Failed to get a login response from server - check API secret for validity");
+			MangaDexClient.dieWithError("Failed to get a login response from server - check API secret for validity");
 		}
 		engine = ApplicationKt.getServer(cache, serverSettings, clientSettings, statistics);
 		engine.start();
@@ -168,38 +169,38 @@ public class MangadexClient {
 	public static void main(String[] args) {
 		System.out.println("Mangadex@Home Client " + Constants.CLIENT_VERSION + " (Build " + Constants.CLIENT_BUILD
 				+ ") initializing\n");
-		System.out.println("Copyright (c) 2020, Mangadex");
+		System.out.println("Copyright (c) 2020, MangaDex Network");
 
 		try {
 			String file = "settings.json";
 			if (args.length == 1) {
 				file = args[0];
 			} else if (args.length != 0) {
-				MangadexClient.dieWithError("Expected one argument: path to config file, or nothing");
+				MangaDexClient.dieWithError("Expected one argument: path to config file, or nothing");
 			}
 
 			ClientSettings settings = new Gson().fromJson(new FileReader(file), ClientSettings.class);
 
 			if (!ClientSettings.isSecretValid(settings.getClientSecret()))
-				MangadexClient.dieWithError("Config Error: API Secret is invalid, must be 52 alphanumeric characters");
+				MangaDexClient.dieWithError("Config Error: API Secret is invalid, must be 52 alphanumeric characters");
 
 			if (settings.getClientPort() == 0) {
-				MangadexClient.dieWithError("Config Error: Invalid port number");
+				MangaDexClient.dieWithError("Config Error: Invalid port number");
 			}
 
 			if (settings.getMaxCacheSizeMib() < 1024) {
-				MangadexClient.dieWithError("Config Error: Invalid max cache size, must be >= 1024 MiB (1GiB)");
+				MangaDexClient.dieWithError("Config Error: Invalid max cache size, must be >= 1024 MiB (1GiB)");
 			}
 
 			if (LOGGER.isInfoEnabled()) {
 				LOGGER.info("Client settings loaded: {}", settings);
 			}
 
-			MangadexClient client = new MangadexClient(settings);
+			MangaDexClient client = new MangaDexClient(settings);
 			Runtime.getRuntime().addShutdownHook(new Thread(client::shutdown));
 			client.runLoop();
 		} catch (FileNotFoundException e) {
-			MangadexClient.dieWithError(e);
+			MangaDexClient.dieWithError(e);
 		}
 	}
 

src/main/java/mdnet/base/ServerSettings.java

@@ -83,8 +83,8 @@ public final class ServerSettings {
 
 		@Override
 		public String toString() {
-			return "TlsCert{" + "createdAt='" + createdAt + '\'' + ", privateKey='" + privateKey + '\''
+			return "TlsCert{" + "createdAt='" + createdAt + '\'' + ", privateKey='" + "<hidden>" + '\''
-					+ ", certificate='" + certificate + '\'' + '}';
+					+ ", certificate='" + "<hidden>" + '\'' + '}';
 		}
 
 		@Override

src/main/java/mdnet/cache/DiskLruCache.java

@@ -244,8 +244,7 @@ public final class DiskLruCache implements Closeable {
 	}
 
 	private void readJournal() throws IOException {
-		StrictLineReader reader = new StrictLineReader(new FileInputStream(journalFile), StandardCharsets.UTF_8);
+		try (StrictLineReader reader = new StrictLineReader(new FileInputStream(journalFile), StandardCharsets.UTF_8)) {
-		try {
 			String magic = reader.readLine();
 			String version = reader.readLine();
 			String appVersionString = reader.readLine();
@@ -276,8 +275,6 @@ public final class DiskLruCache implements Closeable {
 				journalWriter = new BufferedWriter(
 						new OutputStreamWriter(new FileOutputStream(journalFile, true), StandardCharsets.UTF_8));
 			}
-		} finally {
-			Util.closeQuietly(reader);
 		}
 	}
 
@@ -352,9 +349,8 @@ public final class DiskLruCache implements Closeable {
 			journalWriter.close();
 		}
 
-		Writer writer = new BufferedWriter(
+		try (Writer writer = new BufferedWriter(
-				new OutputStreamWriter(new FileOutputStream(journalFileTmp), StandardCharsets.UTF_8));
+				new OutputStreamWriter(new FileOutputStream(journalFileTmp), StandardCharsets.UTF_8))) {
-		try {
 			writer.write(MAGIC);
 			writer.write("\n");
 			writer.write(VERSION_1);
@@ -372,8 +368,6 @@ public final class DiskLruCache implements Closeable {
 					writer.write(CLEAN + ' ' + entry.key + entry.getLengths() + '\n');
 				}
 			}
-		} finally {
-			Util.closeQuietly(writer);
 		}
 
 		if (journalFile.exists()) {
@@ -430,7 +424,10 @@ public final class DiskLruCache implements Closeable {
 			// A file must have been deleted manually!
 			for (int i = 0; i < valueCount; i++) {
 				if (ins[i] != null) {
-					Util.closeQuietly(ins[i]);
+					try {
+						ins[i].close();
+					} catch (IOException ignored) {
+					}
 				} else {
 					break;
 				}
@@ -698,11 +695,8 @@ public final class DiskLruCache implements Closeable {
 		 * Returns the string value for {@code index}. This consumes the InputStream!
 		 */
 		public String getString(int index) throws IOException {
-			InputStream in = getInputStream(index);
+			try (InputStream in = getInputStream(index)) {
-			try {
 				return IOUtils.toString(in, StandardCharsets.UTF_8);
-			} finally {
-				Util.closeQuietly(in);
 			}
 		}
 
@@ -713,7 +707,10 @@ public final class DiskLruCache implements Closeable {
 
 		public void close() {
 			for (InputStream in : ins) {
-				Util.closeQuietly(in);
+				try {
+					in.close();
+				} catch (IOException ignored) {
+				}
 			}
 		}
 	}
@@ -741,7 +738,7 @@ public final class DiskLruCache implements Closeable {
 		 * Returns an unbuffered input stream to read the last committed value, or null
 		 * if no value has been committed.
 		 */
-		public InputStream newInputStream(int index) throws IOException {
+		public InputStream newInputStream(int index) {
 			synchronized (DiskLruCache.this) {
 				if (entry.currentEditor != this) {
 					throw new IllegalStateException();
@@ -762,11 +759,8 @@ public final class DiskLruCache implements Closeable {
 		 * committed.
 		 */
 		public String getString(int index) throws IOException {
-			InputStream in = newInputStream(index);
+			try (InputStream in = newInputStream(index)) {
-			try {
 				return in != null ? IOUtils.toString(in, StandardCharsets.UTF_8) : null;
-			} finally {
-				Util.closeQuietly(in);
 			}
 		}
 
@@ -774,11 +768,8 @@ public final class DiskLruCache implements Closeable {
 		 * Write a string to the specified index.
 		 */
 		public void setString(int index, String value) throws IOException {
-			OutputStream out = newOutputStream(index);
+			try (OutputStream out = newOutputStream(index)) {
-			try {
 				IOUtils.write(value, out, StandardCharsets.UTF_8);
-			} finally {
-				Util.closeQuietly(out);
 			}
 		}
 
@@ -811,6 +802,7 @@ public final class DiskLruCache implements Closeable {
 						outputStream = new FileOutputStream(dirtyFile);
 					} catch (FileNotFoundException e2) {
 						// We are unable to recover. Silently eat the writes.
+						LOGGER.warn("Returning NULL_OUTPUT_STREAM", e2);
 						return NULL_OUTPUT_STREAM;
 					}
 				}
@@ -863,6 +855,7 @@ public final class DiskLruCache implements Closeable {
 				try {
 					out.write(oneByte);
 				} catch (IOException e) {
+					LOGGER.warn("FaultHidingOutputStream exception in write()", e);
 					hasErrors = true;
 				}
 			}
@@ -872,6 +865,7 @@ public final class DiskLruCache implements Closeable {
 				try {
 					out.write(buffer, offset, length);
 				} catch (IOException e) {
+					LOGGER.warn("FaultHidingOutputStream exception in write()", e);
 					hasErrors = true;
 				}
 			}
@@ -881,6 +875,7 @@ public final class DiskLruCache implements Closeable {
 				try {
 					out.close();
 				} catch (IOException e) {
+					LOGGER.warn("FaultHidingOutputStream exception in close()", e);
 					hasErrors = true;
 				}
 			}
@@ -890,6 +885,7 @@ public final class DiskLruCache implements Closeable {
 				try {
 					out.flush();
 				} catch (IOException e) {
+					LOGGER.warn("FaultHidingOutputStream exception in flush()", e);
 					hasErrors = true;
 				}
 			}

src/main/java/mdnet/cache/Util.java

@@ -16,7 +16,6 @@
 
 package mdnet.cache;
 
-import java.io.Closeable;
 import java.io.File;
 import java.io.IOException;
 
@@ -43,15 +42,4 @@ final class Util {
 			}
 		}
 	}
-
-	static void closeQuietly(/* Auto */Closeable closeable) {
-		if (closeable != null) {
-			try {
-				closeable.close();
-			} catch (RuntimeException rethrown) {
-				throw rethrown;
-			} catch (Exception ignored) {
-			}
-		}
-	}
 }

src/main/kotlin/mdnet/base/Application.kt

@@ -47,11 +47,18 @@ fun getServer(cache: DiskLruCache, serverSettings: ServerSettings, clientSetting
             .build())
         .build())
 
-    val app = { request: Request ->
+    val app = { dataSaver: Boolean ->
+        { request: Request ->
 
             val chapterHash = Path.of("chapterHash")(request)
             val fileName = Path.of("fileName")(request)
-        val cacheId = md5String("$chapterHash.$fileName")
+
+            val rc4Bytes = if (dataSaver) {
+                md5Bytes("saver$chapterHash.$fileName")
+            } else {
+                md5Bytes("$chapterHash.$fileName")
+            }
+            val cacheId = printHexString(rc4Bytes)
 
             statistics.get().requestsServed.incrementAndGet()
 
@@ -61,7 +68,10 @@ fun getServer(cache: DiskLruCache, serverSettings: ServerSettings, clientSetting
                     .header("Content-Type", type)
                     .header("X-Content-Type-Options", "nosniff")
                     .header("Last-Modified", lastModified)
-                .header("Cache-Control", listOf("public", MaxAgeTtl(Constants.MAX_AGE_CACHE).toHeaderValue()).joinToString(", "))
+                    .header(
+                        "Cache-Control",
+                        listOf("public", MaxAgeTtl(Constants.MAX_AGE_CACHE).toHeaderValue()).joinToString(", ")
+                    )
                     .header("Timing-Allow-Origin", "https://mangadex.org")
                     .body(input, length.toLong())
 
@@ -85,8 +95,10 @@ fun getServer(cache: DiskLruCache, serverSettings: ServerSettings, clientSetting
                         LOGGER.trace("Request for $chapterHash/$fileName hit cache")
                     }
 
-                respondWithImage(CipherInputStream(snapshot.getInputStream(0), getRc4(cacheId)),
+                    respondWithImage(
-                    snapshot.getLength(0).toString(), snapshot.getString(1), snapshot.getString(2))
+                        CipherInputStream(snapshot.getInputStream(0), getRc4(rc4Bytes)),
+                        snapshot.getLength(0).toString(), snapshot.getString(1), snapshot.getString(2)
+                    )
                 }
             } else {
                 statistics.get().cacheMisses.incrementAndGet()
@@ -105,6 +117,9 @@ fun getServer(cache: DiskLruCache, serverSettings: ServerSettings, clientSetting
                     val contentLength = mdResponse.header("Content-Length")!!
                     val contentType = mdResponse.header("Content-Type")!!
 
+                    if (LOGGER.isTraceEnabled) {
+                        LOGGER.trace("Grabbing DiskLruCache editor instance")
+                    }
                     val editor = cache.edit(cacheId)
 
                     val lastModified = mdResponse.header("Last-Modified")!!
@@ -118,8 +133,10 @@ fun getServer(cache: DiskLruCache, serverSettings: ServerSettings, clientSetting
                         editor.setString(1, contentType)
                         editor.setString(2, lastModified)
 
-                    val tee = CachingInputStream(mdResponse.body.stream,
+                        val tee = CachingInputStream(
-                        executor, CipherOutputStream(editor.newOutputStream(0), getRc4(cacheId))) {
+                            mdResponse.body.stream,
+                            executor, CipherOutputStream(editor.newOutputStream(0), getRc4(rc4Bytes))
+                        ) {
                             // Note: if neither of the options get called/are in the log
                             // check that tee gets closed and for exceptions in this lambda
                             if (editor.getLength(0) == contentLength.toLong()) {
@@ -147,6 +164,7 @@ fun getServer(cache: DiskLruCache, serverSettings: ServerSettings, clientSetting
                 }
             }
         }
+    }
 
     CachingFilters
 
@@ -155,15 +173,16 @@ fun getServer(cache: DiskLruCache, serverSettings: ServerSettings, clientSetting
         .then(addCommonHeaders())
         .then(
             routes(
-                "/data/{chapterHash}/{fileName}" bind Method.GET to app
+                "/data/{chapterHash}/{fileName}" bind Method.GET to app(false)
+//                "/data-saver/{chapterHash}/{fileName}" bind Method.GET to app(true)
             )
         )
         .asServer(Netty(serverSettings.tls, clientSettings, statistics))
 }
 
-private fun getRc4(key: String): Cipher {
+private fun getRc4(key: ByteArray): Cipher {
     val rc4 = Cipher.getInstance("RC4")
-    rc4.init(Cipher.ENCRYPT_MODE, SecretKeySpec(key.toByteArray(), "RC4"))
+    rc4.init(Cipher.ENCRYPT_MODE, SecretKeySpec(key, "RC4"))
     return rc4
 }
 
@@ -185,17 +204,23 @@ private fun catchAllHideDetails(): Filter {
             try {
                 next(request)
             } catch (e: Exception) {
+                if (LOGGER.isWarnEnabled) {
+                    LOGGER.warn("Request error detected", e)
+                }
                 Response(Status.INTERNAL_SERVER_ERROR)
             }
         }
     }
 }
 
-private fun md5String(stringToHash: String): String {
+private fun md5Bytes(stringToHash: String): ByteArray {
     val digest = MessageDigest.getInstance("MD5")
+    return digest.digest(stringToHash.toByteArray())
+}
 
+private fun printHexString(bytes: ByteArray): String {
     val sb = StringBuilder()
-    for (b in digest.digest(stringToHash.toByteArray())) {
+    for (b in bytes) {
         sb.append(String.format("%02x", b))
     }
     return sb.toString()