Squashed 'bytefrog/' content from commit 010e2ed

git-subtree-dir: bytefrog
git-subtree-split: 010e2ed020d871357a90e865fa8d1cce3753c548

Author: baffles

.gitignore

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+.DS_Store
+.java-version
+.scala_dependencies
+.settings/
+.classpath
+.cache
+.project
+.idea
+.idea_modules
+*.sublime-workspace
+target/
+outputs/

.travis.yml

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+language: scala
+scala:
+  - 2.12.4
+jdk:
+  - oraclejdk8
+notifications:
+  email:
+    - secure: "bnZOTWy67FbOJXZ6Luvrez2zgcitYxuUeyr6apFX9hSCTAJ8HrcWwAxfV/FW/L/W06DqzS9LbJ2COi4ErMmjHS2Dj5oeEnmWhF/H7g/IijL1E++n//C8u8g3buf04ac1sG126Wc7YcyJfGohUBAPuZ7Jb6zwiLLH8lt0jTpr0SQ="
+  slack:
+    rooms:
+      - secure: "YZiC1v5RIlTnkQ7k6QcsLO3ACrQIXU9mfQJaUSF58j2PSVwttHebUhJaDFZTrhxdtW0VxRrQe47K22lgd6JlE3hK93NgvfpZGIuGe+VZi0YHIRDshmbsZIGBJq6inNBAT89xk/+SsVLwPjYksFVe5aZbsh3D85KnTBeFSAT5gIE="
+    on_success: change

LICENSE

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+Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
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+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
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+      on Your own behalf and on Your sole responsibility, not on behalf
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+
+   END OF TERMS AND CONDITIONS
+
+   Copyright 2014 Applied Visions
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
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+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.

build.sbt

@@ -0,0 +1,59 @@
+val shared = Seq(
+	organization := "com.codedx",
+	scalacOptions := List("-deprecation", "-unchecked", "-feature"),
+	scalaVersion := "2.12.4",
+	javacOptions := List("-source", "1.7", "-target", "1.7", "-Xlint:-options", "-Xlint:unchecked")
+)
+
+val javaOnly = Seq(
+	autoScalaLibrary := false,
+	crossPaths := false
+	// unmanagedSourceDirectories in Compile <<= (javaSource in Compile) { _ :: Nil }
+)
+
+val withTesting = Seq(
+	libraryDependencies += Dependencies.scalactic,
+	libraryDependencies += Dependencies.scalaTest,
+	libraryDependencies += Dependencies.scalaMock
+)
+
+lazy val RepackagedAsm = project
+	.settings(
+		shared,
+		javaOnly,
+		Repackager("asm", Dependencies.asm, Repackager.Rename("org.objectweb.asm.**", "com.codedx.bytefrog.thirdparty.asm.@1")).settings
+	)
+
+lazy val RepackagedMinlog = project
+	.settings(
+		shared,
+		javaOnly,
+		Repackager("minlog", Dependencies.minlog, Repackager.Rename("com.esotericsoftware.minlog.**", "com.codedx.bytefrog.thirdparty.minlog.@1")).settings
+	)
+
+lazy val Instrumentation = (project in file("instrumentation"))
+	.dependsOn(RepackagedAsm)
+	.settings(
+		shared,
+		javaOnly,
+		withTesting
+	)
+
+lazy val FilterInjector = (project in file("filter-injector"))
+	.dependsOn(RepackagedAsm, RepackagedMinlog, Util)
+	.settings(
+		shared,
+		javaOnly
+	)
+
+lazy val Util = (project in file("util"))
+	.dependsOn(RepackagedAsm, RepackagedMinlog)
+	.settings(
+		shared,
+		javaOnly,
+		withTesting
+	)
+
+lazy val Stack = (project in file("."))
+	.settings(JarJarRunner.globalSettings)
+	.aggregate(RepackagedAsm, RepackagedMinlog, Instrumentation, FilterInjector, Util)

filter-injector/src/main/java/com/codedx/bytefrog/filterinjector/FilterInjector.java

@@ -0,0 +1,66 @@
+package com.codedx.bytefrog.filterinjector;
+
+import com.codedx.bytefrog.filterinjector.adapters.*;
+import com.codedx.bytefrog.filterinjector.filter.InjectableFilter;
+
+import com.codedx.bytefrog.thirdparty.asm.ClassReader;
+import com.codedx.bytefrog.thirdparty.asm.ClassVisitor;
+import com.codedx.bytefrog.thirdparty.asm.Opcodes;
+
+import com.codedx.bytefrog.thirdparty.minlog.Log;
+
+/** A helper utility that, via instrumentation, can inject a filter into one of several known
+  * servlet containers.
+  *
+  * @author robertf
+  */
+public class FilterInjector {
+	private final InjectableFilter filter;
+
+	public FilterInjector(InjectableFilter filter) {
+		this.filter = filter;
+	}
+
+	public Adapter getAdapter(final ClassLoader classLoader, final byte[] buffer) {
+		return getAdapter(classLoader, new ClassReader(buffer));
+	}
+
+	public Adapter getAdapter(final ClassLoader classLoader, final ClassReader cr) {
+		final Visitor visitor = new Visitor();
+		cr.accept(visitor, 0);
+		return visitor.getAdapter();
+	}
+
+	private Adapter checkAdapter(String name, String[] interfaces) {
+		for (String iface : interfaces) switch (iface) {
+			case "org/apache/catalina/Context":
+				Log.debug("filter injector", "encountered org.apache.catalina.Context; checking for tomcat");
+				return new TomcatAdapter(filter);
+		}
+
+		switch (name) {
+			case "org/eclipse/jetty/servlet/ServletHandler":
+				Log.debug("filter injector", "encountered org.eclipse.jetty.servlet.ServletHandler; checking for jetty");
+				return new JettyAdapter(filter);
+		}
+
+		return null;
+	}
+
+	private class Visitor extends ClassVisitor {
+		private Adapter adapter = null;
+
+		public Visitor() {
+			super(Opcodes.ASM5);
+		}
+
+		public Adapter getAdapter() {
+			return adapter;
+		}
+
+		@Override public void visit(int version, int access, String name, String signature, String superName, String[] interfaces) {
+			super.visit(version, access, name, signature, superName, interfaces);
+			adapter = checkAdapter(name, interfaces);
+		}
+	}
+}

filter-injector/src/main/java/com/codedx/bytefrog/filterinjector/adapters/Adapter.java

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+package com.codedx.bytefrog.filterinjector.adapters;
+
+import com.codedx.bytefrog.thirdparty.asm.ClassVisitor;
+
+/** Adapters are used for injecting servlet filters into a container at runtime, in a generic/
+  * extensible manner. Adapterss are enumerated in FilterInjector such that an instrumentation
+  * process can easily determine an appropriate injection method based on what classes are loaded
+  * at runtime.
+  *
+  * @author robertf
+  */
+public interface Adapter {
+	/** Returns a ClassVisitor to handle instrumentation of the class as necessary.
+    * @param classLoader the class loader being used to load the class
+	  * @param cv the ClassVisitor to delegate to (e.g., the one that accepts the instrumented class)
+	  */
+	ClassVisitor getClassVisitor(final ClassLoader classLoader, final ClassVisitor cv);
+}