From bc9dade982d8e8efe66c0fc814dafd8bf079e689 Mon Sep 17 00:00:00 2001
From: Tarun Gupta <tarun1995gupta@gmail.com>
Date: Fri, 19 Jun 2015 09:14:50 +0530
Subject: Add ComponentHandshake Element.

Adds ComponentHandshake Element, its parser and Serializer.
Adds ComponentHandshake Generator.
Adds TopLevelElement.
Updates SafeByteArray.

License:
This patch is BSD-licensed, see Documentation/Licenses/BSD-simplified.txt for details.

Test-Information:
Test added for ComponentHandshakeGenerator, which passes.

Change-Id: If3026a3db2207e6c65aa2306fee56d8dd5dee86f

diff --git a/src/com/isode/stroke/base/SafeByteArray.java b/src/com/isode/stroke/base/SafeByteArray.java
index e35ef35..af43261 100644
--- a/src/com/isode/stroke/base/SafeByteArray.java
+++ b/src/com/isode/stroke/base/SafeByteArray.java
@@ -12,4 +12,7 @@ import com.isode.stroke.base.ByteArray;
 */
 public class SafeByteArray extends ByteArray {
 
+	public SafeByteArray(String s) {
+		super(s);
+	}
 }
\ No newline at end of file
diff --git a/src/com/isode/stroke/component/ComponentHandshakeGenerator.java b/src/com/isode/stroke/component/ComponentHandshakeGenerator.java
new file mode 100644
index 0000000..aa41535
--- /dev/null
+++ b/src/com/isode/stroke/component/ComponentHandshakeGenerator.java
@@ -0,0 +1,30 @@
+/*
+ * Copyright (c) 2010-2013 Isode Limited.
+ * All rights reserved.
+ * See the COPYING file for more information.
+ */
+/*
+ * Copyright (c) 2015 Tarun Gupta.
+ * Licensed under the simplified BSD license.
+ * See Documentation/Licenses/BSD-simplified.txt for more information.
+ */
+
+package com.isode.stroke.component;
+
+import com.isode.stroke.crypto.CryptoProvider;
+import com.isode.stroke.crypto.JavaCryptoProvider;
+import com.isode.stroke.stringcodecs.Hexify;
+import com.isode.stroke.base.ByteArray;
+
+public class ComponentHandshakeGenerator {
+
+	public static String getHandshake(String streamID, String secret, CryptoProvider crypto) {
+		String concatenatedString = streamID + secret;
+		concatenatedString = concatenatedString.replaceAll("&", "&amp;");
+		concatenatedString = concatenatedString.replaceAll("<", "&lt;");
+		concatenatedString = concatenatedString.replaceAll(">", "&gt;");
+		concatenatedString = concatenatedString.replaceAll("\'", "&apos;");
+		concatenatedString = concatenatedString.replaceAll("\"", "&quot;");
+		return Hexify.hexify(crypto.getSHA1Hash(new ByteArray(concatenatedString)));
+	}
+}
\ No newline at end of file
diff --git a/src/com/isode/stroke/elements/ComponentHandshake.java b/src/com/isode/stroke/elements/ComponentHandshake.java
new file mode 100644
index 0000000..f5ae830
--- /dev/null
+++ b/src/com/isode/stroke/elements/ComponentHandshake.java
@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 2010-2014 Isode Limited.
+ * All rights reserved.
+ * See the COPYING file for more information.
+ */
+/*
+ * Copyright (c) 2015 Tarun Gupta.
+ * Licensed under the simplified BSD license.
+ * See Documentation/Licenses/BSD-simplified.txt for more information.
+ */
+
+package com.isode.stroke.elements;
+
+import com.isode.stroke.base.NotNull;
+import com.isode.stroke.elements.TopLevelElement;
+
+public class ComponentHandshake implements TopLevelElement {
+
+	private String data = "";
+
+	/**
+	* Default Constructor.
+	*/
+	public ComponentHandshake() {
+		this("");
+	}
+
+	/**
+	* Parameterized Constructor.
+	* @param data, Not Null.
+	*/
+	public ComponentHandshake(String data) {
+		NotNull.exceptIfNull(data, "data");
+		this.data = data;
+	}
+
+	/**
+	* @return data, NotNull.
+	*/
+	public String getData() {
+		return data;
+	}
+
+	/**
+	* @param data, NotNull.
+	*/
+	public void setData(String data) {
+		NotNull.exceptIfNull(data, "data");
+		this.data = data;
+	}
+}
\ No newline at end of file
diff --git a/src/com/isode/stroke/elements/TopLevelElement.java b/src/com/isode/stroke/elements/TopLevelElement.java
new file mode 100644
index 0000000..4b7c0d8
--- /dev/null
+++ b/src/com/isode/stroke/elements/TopLevelElement.java
@@ -0,0 +1,18 @@
+/*
+ * Copyright (c) 2010-2014 Isode Limited.
+ * All rights reserved.
+ * See the COPYING file for more information.
+ */
+/*
+ * Copyright (c) 2015 Tarun Gupta.
+ * Licensed under the simplified BSD license.
+ * See Documentation/Licenses/BSD-simplified.txt for more information.
+ */
+
+package com.isode.stroke.elements;
+
+import com.isode.stroke.elements.Element;
+
+public interface TopLevelElement extends Element {
+
+}
\ No newline at end of file
diff --git a/src/com/isode/stroke/parser/ComponentHandshakeParser.java b/src/com/isode/stroke/parser/ComponentHandshakeParser.java
new file mode 100644
index 0000000..153a62d
--- /dev/null
+++ b/src/com/isode/stroke/parser/ComponentHandshakeParser.java
@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2010 Isode Limited.
+ * All rights reserved.
+ * See the COPYING file for more information.
+ */
+/*
+ * Copyright (c) 2015 Tarun Gupta.
+ * Licensed under the simplified BSD license.
+ * See Documentation/Licenses/BSD-simplified.txt for more information.
+ */
+
+package com.isode.stroke.parser;
+
+import com.isode.stroke.parser.GenericElementParser;
+import com.isode.stroke.parser.AttributeMap;
+import com.isode.stroke.elements.ComponentHandshake;
+import com.isode.stroke.base.NotNull;
+
+public class ComponentHandshakeParser extends GenericElementParser<ComponentHandshake> {
+
+	private int depth = 0;
+	private String text = "";
+
+	public ComponentHandshakeParser() {
+		super(ComponentHandshake.class);
+	}
+
+	/**
+	* @param element.
+	* @param ns.
+	* @param attributes.
+	*/
+	public void handleStartElement(String element, String ns, AttributeMap attributes) {
+		++depth;
+	}
+
+	/**
+	* @param element.
+	* @param ns.
+	*/
+	public void handleEndElement(String element, String ns) {
+		--depth;
+		if (depth == 0) {
+			getElementGeneric().setData(text);
+		}
+	}
+
+	/**
+	* @param text, NotNull.
+	*/
+	public void handleCharacterData(String text) {
+		NotNull.exceptIfNull(text, "text");
+		this.text += text;
+	}
+}
\ No newline at end of file
diff --git a/src/com/isode/stroke/serializer/ComponentHandshakeSerializer.java b/src/com/isode/stroke/serializer/ComponentHandshakeSerializer.java
new file mode 100644
index 0000000..a320941
--- /dev/null
+++ b/src/com/isode/stroke/serializer/ComponentHandshakeSerializer.java
@@ -0,0 +1,28 @@
+/*
+ * Copyright (c) 2010-2014 Isode Limited.
+ * All rights reserved.
+ * See the COPYING file for more information.
+ */
+/*
+ * Copyright (c) 2015 Tarun Gupta.
+ * Licensed under the simplified BSD license.
+ * See Documentation/Licenses/BSD-simplified.txt for more information.
+ */
+
+package com.isode.stroke.serializer;
+
+import com.isode.stroke.serializer.GenericElementSerializer;
+import com.isode.stroke.elements.ComponentHandshake;
+import com.isode.stroke.elements.Element;
+
+public class ComponentHandshakeSerializer extends GenericElementSerializer<ComponentHandshake> {
+
+	public ComponentHandshakeSerializer() {
+		super(ComponentHandshake.class);
+	}
+
+	public String serialize(Element element) {
+		ComponentHandshake handshake = (ComponentHandshake)(element);
+		return ("<handshake>" + handshake.getData() + "</handshake>");
+	}
+}
\ No newline at end of file
diff --git a/test/com/isode/stroke/component/ComponentHandshakeGeneratorTest.java b/test/com/isode/stroke/component/ComponentHandshakeGeneratorTest.java
new file mode 100644
index 0000000..e5cdc84
--- /dev/null
+++ b/test/com/isode/stroke/component/ComponentHandshakeGeneratorTest.java
@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2010-2013 Isode Limited.
+ * All rights reserved.
+ * See the COPYING file for more information.
+ */
+/*
+ * Copyright (c) 2015 Tarun Gupta.
+ * Licensed under the simplified BSD license.
+ * See Documentation/Licenses/BSD-simplified.txt for more information.
+ */
+
+package com.isode.stroke.component;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertNull;
+import org.junit.Test;
+import org.junit.Before;
+import com.isode.stroke.component.ComponentHandshakeGenerator;
+import com.isode.stroke.crypto.JavaCryptoProvider;
+import com.isode.stroke.crypto.CryptoProvider;
+
+public class ComponentHandshakeGeneratorTest {
+
+	public ComponentHandshakeGeneratorTest() {
+
+	}
+
+	private CryptoProvider crypto;
+
+	@Before
+	public void setUp() {
+		crypto = new JavaCryptoProvider();
+	}
+
+	@Test
+	public void testGetHandshake() {
+		String result = ComponentHandshakeGenerator.getHandshake("myid", "mysecret", crypto);
+		assertEquals("4011cd31f9b99ac089a0cd7ce297da7323fa2525", result);
+	}
+
+	@Test
+	public void testGetHandshake_SpecialChars() {
+		String result = ComponentHandshakeGenerator.getHandshake("&<", ">'\"", crypto);
+		assertEquals("33631b3e0aaeb2a11c4994c917919324028873fe", result);
+	}	
+}
\ No newline at end of file
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