Finished OS X memory reading/writing

Author: Jonathan Beaudoin

src/main/java/com/beaudoin/jmm/process/impl/mac/MacProcess.java

@@ -1,68 +1,103 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2016 Jonathan Beaudoin
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
 package com.beaudoin.jmm.process.impl.mac;
 
+import com.beaudoin.jmm.misc.Cacheable;
 import com.beaudoin.jmm.misc.MemoryBuffer;
+import com.beaudoin.jmm.natives.mac.mac;
+import com.beaudoin.jmm.natives.unix.unix;
 import com.beaudoin.jmm.process.Module;
 import com.beaudoin.jmm.process.NativeProcess;
 import com.sun.jna.Pointer;
 
 import java.util.HashMap;
 import java.util.Map;
 
+import static com.beaudoin.jmm.misc.Cacheable.INT_BY_REF;
+
 /**
  * Created by Jonathan on 1/10/2016.
  */
 public final class MacProcess implements NativeProcess {
 
-	private final int id;
-	private final int task;
-	private Map<String, Module> modules = new HashMap<>();
-
-	public MacProcess(int id, int mach_task) {
-		this.id = id;
-		this.task = mach_task;
-		initModules();
-	}
+    private final int id;
+    private final int task;
+    private Map<String, Module> modules = new HashMap<>();
 
-	public int task() {
-		return task;
-	}
+    public MacProcess(int id, int mach_task) {
+        this.id = id;
+        this.task = mach_task;
+        initModules();
+    }
 
-	@Override
-	public int id() {
-		return id;
-	}
+    public int task() {
+        return task;
+    }
 
-	@Override
-	public void initModules() {
-		//TODO
-	}
+    @Override
+    public int id() {
+        return id;
+    }
 
-	@Override
-	public Module findModule(String moduleName) {
-		//TODO
-		return null;
-	}
+    @Override
+    public void initModules() {
+        //TODO
+    }
 
-	@Override
-	public MemoryBuffer read(Pointer address, int size) {
+    @Override
+    public Module findModule(String moduleName) {
+        //TODO
+        return null;
+    }
 
-		return null;
-	}
+    @Override
+    public MemoryBuffer read(Pointer address, int size) {
+        MemoryBuffer buffer = Cacheable.buffer(size);
+        if (mac.vm_read(task(), address, size, buffer, INT_BY_REF) != 0 || INT_BY_REF.getValue() != size) {
+            throw new RuntimeException("Read memory failed at address " + Pointer.nativeValue(address) + " size " + size);
+        }
+        Pointer.nativeValue(buffer, Pointer.nativeValue(buffer.getPointer(0)));
+        return buffer;
+    }
 
-	@Override
-	public NativeProcess write(Pointer address, MemoryBuffer buffer) {
-		//TODO
-		return null;
-	}
+    @Override
+    public NativeProcess write(Pointer address, MemoryBuffer buffer) {
+        if (mac.vm_write(task(), address, buffer, buffer.size()) != 0) {
+            throw new RuntimeException("Write memory failed at address " + Pointer.nativeValue(address) + " size " + buffer.size());
+        }
+        return this;
+    }
 
-	@Override
-	public boolean canRead(Pointer address, int size) {
-		try {
-			read(address, size);
-			return true;
-		} catch (Exception e) {
-			return false;
-		}
-	}
+    @Override
+    public boolean canRead(Pointer address, int size) {
+        try {
+            read(address, size);
+            return true;
+        } catch (Exception e) {
+            return false;
+        }
+    }
 
 }