android: Add measurement collector for String Version

src/frontends/android/src/org/strongswan/android/logic/imc/AndroidImc.java

@@ -15,6 +15,11 @@
 
 package org.strongswan.android.logic.imc;
 
+import org.strongswan.android.logic.imc.attributes.Attribute;
+import org.strongswan.android.logic.imc.attributes.AttributeType;
+import org.strongswan.android.logic.imc.collectors.Collector;
+import org.strongswan.android.logic.imc.collectors.StringVersionCollector;
+
 import android.content.Context;
 
 public class AndroidImc
@@ -36,6 +41,25 @@ public class AndroidImc
 	 */
 	public byte[] getMeasurement(int vendor, int type)
 	{
+		AttributeType attributeType = AttributeType.fromValues(vendor, type);
+		Collector collector = null;
+
+		switch (attributeType)
+		{
+			case IETF_STRING_VERSION:
+				collector = new StringVersionCollector();
+				break;
+			default:
+				break;
+		}
+		if (collector != null)
+		{
+			Attribute attribute = collector.getMeasurement();
+			if (attribute != null)
+			{
+				return attribute.getEncoding();
+			}
+		}
 		return null;
 	}
 }

src/frontends/android/src/org/strongswan/android/logic/imc/attributes/StringVersionAttribute.java

@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2013 Tobias Brunner
+ * Copyright (C) 2012 Christoph Buehler
+ * Copyright (C) 2012 Patrick Loetscher
+ * Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+package org.strongswan.android.logic.imc.attributes;
+
+import org.strongswan.android.utils.BufferedByteWriter;
+
+/**
+ * PA-TNC String Version attribute (see section 4.2.4 of RFC 5792)
+ *
+ *                       1                   2                   3
+ *   0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *  |  Version Len  |   Product Version Number (Variable Length)    |
+ *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *  | Build Num Len |   Internal Build Number (Variable Length)     |
+ *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *  |  Config. Len  | Configuration Version Number (Variable Length)|
+ *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ */
+public class StringVersionAttribute implements Attribute
+{
+	private String mVersionNumber;
+	private String mBuildNumber;
+
+	/**
+	 * Set the product version number
+	 * @param version version number
+	 */
+	public void setProductVersionNumber(String version)
+	{
+		this.mVersionNumber = version;
+	}
+
+	/**
+	 * Set the internal build number
+	 * @param build build number
+	 */
+	public void setInternalBuildNumber(String build)
+	{
+		this.mBuildNumber = build;
+	}
+
+	@Override
+	public byte[] getEncoding()
+	{
+		BufferedByteWriter writer = new BufferedByteWriter();
+		writer.putLen8(mVersionNumber.getBytes());
+		writer.putLen8(mBuildNumber.getBytes());
+		/* we don't provide a configuration number */
+		writer.put((byte)0);
+		return writer.toByteArray();
+	}
+}

src/frontends/android/src/org/strongswan/android/logic/imc/collectors/StringVersionCollector.java

@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2013 Tobias Brunner
+ * Copyright (C) 2012 Christoph Buehler
+ * Copyright (C) 2012 Patrick Loetscher
+ * Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+package org.strongswan.android.logic.imc.collectors;
+
+import org.strongswan.android.logic.imc.attributes.Attribute;
+import org.strongswan.android.logic.imc.attributes.StringVersionAttribute;
+
+public class StringVersionCollector implements Collector
+{
+	@Override
+	public Attribute getMeasurement()
+	{
+		StringVersionAttribute attribute = new StringVersionAttribute();
+		attribute.setProductVersionNumber(android.os.Build.VERSION.RELEASE);
+		attribute.setInternalBuildNumber(android.os.Build.DISPLAY);
+		return attribute;
+	}
+}