simplify loadLibrary

java/src/com/zerotier/sdk/NativeUtils.java

@@ -1,93 +0,0 @@
-package com.zerotier.sdk;
-
-import java.io.File;
-import java.io.FileNotFoundException;
-import java.io.FileOutputStream;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
- 
-/**
- * Simple library class for working with JNI (Java Native Interface)
- * 
- * @see http://adamheinrich.com/2012/how-to-load-native-jni-library-from-jar
- *
- * @author Adam Heirnich <adam@adamh.cz>, http://www.adamh.cz
- */
-public class NativeUtils {
- 
-    /**
-     * Private constructor - this class will never be instanced
-     */
-    private NativeUtils() {
-    }
- 
-    /**
-     * Loads library from current JAR archive
-     * 
-     * The file from JAR is copied into system temporary directory and then loaded. The temporary file is deleted after exiting.
-     * Method uses String as filename because the pathname is "abstract", not system-dependent.
-     * 
-     * @param filename The filename inside JAR as absolute path (beginning with '/'), e.g. /package/File.ext
-     * @throws IOException If temporary file creation or read/write operation fails
-     * @throws IllegalArgumentException If source file (param path) does not exist
-     * @throws IllegalArgumentException If the path is not absolute or if the filename is shorter than three characters (restriction of {@see File#createTempFile(java.lang.String, java.lang.String)}).
-     */
-    public static void loadLibraryFromJar(String path) throws IOException {
- 
-        if (!path.startsWith("/")) {
-            throw new IllegalArgumentException("The path has to be absolute (start with '/').");
-        }
- 
-        // Obtain filename from path
-        String[] parts = path.split("/");
-        String filename = (parts.length > 1) ? parts[parts.length - 1] : null;
- 
-        // Split filename to prefix and suffix (extension)
-        String prefix = "";
-        String suffix = null;
-        if (filename != null) {
-            parts = filename.split("\\.", 2);
-            prefix = parts[0];
-            suffix = (parts.length > 1) ? "."+parts[parts.length - 1] : null; // Thanks, davs! :-)
-        }
- 
-        // Check if the filename is okay
-        if (filename == null || prefix.length() < 3) {
-            throw new IllegalArgumentException("The filename has to be at least 3 characters long.");
-        }
- 
-        // Prepare temporary file
-        File temp = File.createTempFile(prefix, suffix);
-        temp.deleteOnExit();
- 
-        if (!temp.exists()) {
-            throw new FileNotFoundException("File " + temp.getAbsolutePath() + " does not exist.");
-        }
- 
-        // Prepare buffer for data copying
-        byte[] buffer = new byte[1024];
-        int readBytes;
- 
-        // Open and check input stream
-        InputStream is = NativeUtils.class.getResourceAsStream(path);
-        if (is == null) {
-            throw new FileNotFoundException("File " + path + " was not found inside JAR.");
-        }
- 
-        // Open output stream and copy data between source file in JAR and the temporary file
-        OutputStream os = new FileOutputStream(temp);
-        try {
-            while ((readBytes = is.read(buffer)) != -1) {
-                os.write(buffer, 0, readBytes);
-            }
-        } finally {
-            // If read/write fails, close streams safely before throwing an exception
-            os.close();
-            is.close();
-        }
- 
-        // Finally, load the library
-        System.load(temp.getAbsolutePath());
-    }
-}

java/src/com/zerotier/sdk/Node.java

@@ -28,35 +28,14 @@
 package com.zerotier.sdk;
 
 import java.net.InetSocketAddress;
-import java.util.ArrayList;
-import java.io.IOException;
 
 /**
  * A ZeroTier One node
  */
 public class Node {
-	static {
-        try {
-    		System.loadLibrary("ZeroTierOneJNI");
-        } catch (UnsatisfiedLinkError e) {
-            try { 
-                if(System.getProperty("os.name").startsWith("Windows")) {
-                    System.out.println("Arch: " + System.getProperty("sun.arch.data.model"));
-                    if(System.getProperty("sun.arch.data.model").equals("64")) {
-                        NativeUtils.loadLibraryFromJar("/lib/ZeroTierOneJNI_win64.dll");
-                    } else {
-                        NativeUtils.loadLibraryFromJar("/lib/ZeroTierOneJNI_win32.dll");
-                    }
-                } else if(System.getProperty("os.name").startsWith("Mac")) {
-                    NativeUtils.loadLibraryFromJar("/lib/libZeroTierOneJNI.jnilib");
-                } else {
-                    // TODO: Linux
-                }
-            } catch (IOException ioe) {
-                ioe.printStackTrace();
-            }
-        }
-	}
+    static {
+        System.loadLibrary("ZeroTierOneJNI");
+    }
 
     private static final String TAG = "NODE";