Add raw injector to hook the script interpreter

2018-02-09 16:40:28 -07:00
parent 0781a39a91
commit f71059ce20
4 changed files with 100 additions and 55 deletions
--- a/runelite-mixins/src/main/java/net/runelite/mixins/ScriptVMMixin.java
+++ b/runelite-mixins/src/main/java/net/runelite/mixins/ScriptVMMixin.java
@@ -0,0 +1,97 @@
+/*
+ * Copyright (c) 2018 Abex
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+package net.runelite.mixins;
+
+import net.runelite.api.Client;
+import net.runelite.api.events.ScriptEvent;
+import net.runelite.api.mixins.Copy;
+import net.runelite.api.mixins.Inject;
+import net.runelite.api.mixins.Mixin;
+import net.runelite.api.mixins.Replace;
+import net.runelite.api.mixins.Shadow;
+import net.runelite.client.callback.Hooks;
+import net.runelite.rs.api.RSClient;
+import net.runelite.rs.api.RSScript;
+import net.runelite.rs.api.RSScriptEvent;
+
+import static net.runelite.api.Opcodes.RUNELITE_EXECUTE;
+
+@Mixin(RSClient.class)
+public abstract class ScriptVMMixin implements RSClient
+{
+	@Shadow("clientInstance")
+	private static Client client;
+
+	// This field is set by the ScriptVM raw injector
+	@Inject
+	private static RSScript currentScript;
+
+	// This field is set by the ScriptVM raw injector
+	@Inject
+	private static int currentScriptPC;
+
+	// Call is injected into runScript by the ScriptVM raw injector
+	@Inject
+	static boolean vmExecuteOpcode(int opcode)
+	{
+		if (opcode == RUNELITE_EXECUTE)
+		{
+			if (currentScript.getInstructions()[currentScriptPC] != RUNELITE_EXECUTE)
+			{
+				throw new AssertionError("currentScriptPC is wrong");
+			}
+
+			int stringStackSize = client.getStringStackSize();
+			String stringOp = client.getStringStack()[--stringStackSize];
+			client.setStringStackSize(stringStackSize);
+
+			ScriptEvent event = new ScriptEvent();
+			event.setScript(currentScript);
+			event.setEventName(stringOp);
+			Hooks.eventBus.post(event);
+			return true;
+		}
+		return false;
+	}
+
+	@Copy("runScript")
+	static void rs$runScript(RSScriptEvent event, int maxExecutionTime)
+	{
+		throw new RuntimeException();
+	}
+
+	@Replace("runScript")
+	static void rl$runScript(RSScriptEvent event, int maxExecutionTime)
+	{
+		try
+		{
+			rs$runScript(event, maxExecutionTime);
+		}
+		finally
+		{
+			currentScript = null;
+		}
+	}
+}