android: Add measurement collector for Installed Packages

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

@@ -18,6 +18,7 @@ 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.InstalledPackagesCollector;
 import org.strongswan.android.logic.imc.collectors.ProductInformationCollector;
 import org.strongswan.android.logic.imc.collectors.StringVersionCollector;
 
@@ -53,6 +54,9 @@ public class AndroidImc
 			case IETF_STRING_VERSION:
 				collector = new StringVersionCollector();
 				break;
+			case IETF_INSTALLED_PACKAGES:
+				collector = new InstalledPackagesCollector(mContext);
+				break;
 			default:
 				break;
 		}

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

@@ -0,0 +1,67 @@
+/*
+ * 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 java.util.LinkedList;
+
+import org.strongswan.android.utils.BufferedByteWriter;
+
+import android.util.Pair;
+
+/**
+ * PA-TNC Installed Packages attribute (see section 4.2.7 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
+ *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *  |          Reserved             |         Package Count         |
+ *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *  | Pkg Name Len  |        Package Name (Variable Length)         |
+ *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *  |  Version Len  |    Package Version Number (Variable Length)   |
+ *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ */
+public class InstalledPackagesAttribute implements Attribute
+{
+	private final short RESERVED = 0;
+	private final LinkedList<Pair<String, String>> mPackages = new LinkedList<Pair<String, String>>();
+
+	/**
+	 * Add an installed package to this attribute.
+	 * @param name name of the package
+	 * @param version version number of the package
+	 */
+	public void addPackage(String name, String version)
+	{
+		mPackages.add(new Pair<String, String>(name, version));
+	}
+
+	@Override
+	public byte[] getEncoding()
+	{
+		BufferedByteWriter writer = new BufferedByteWriter();
+		writer.put16(RESERVED);
+		writer.put16((short)mPackages.size());
+		for (Pair<String, String> pair : mPackages)
+		{
+			writer.putLen8(pair.first.getBytes());
+			writer.putLen8(pair.second.getBytes());
+		}
+		return writer.toByteArray();
+	}
+}

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

@@ -0,0 +1,55 @@
+/*
+ * 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 java.util.List;
+
+import org.strongswan.android.logic.imc.attributes.Attribute;
+import org.strongswan.android.logic.imc.attributes.InstalledPackagesAttribute;
+
+import android.content.Context;
+import android.content.pm.ApplicationInfo;
+import android.content.pm.PackageInfo;
+import android.content.pm.PackageManager;
+
+public class InstalledPackagesCollector implements Collector
+{
+	private final PackageManager mPackageManager;
+
+	public InstalledPackagesCollector(Context context)
+	{
+		mPackageManager = context.getPackageManager();
+	}
+
+	@Override
+	public Attribute getMeasurement()
+	{
+		InstalledPackagesAttribute attribute = new InstalledPackagesAttribute();
+		List<PackageInfo> packages = mPackageManager.getInstalledPackages(0);
+		for (PackageInfo info : packages)
+		{
+			if ((info.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) != 0 ||
+				info.packageName == null || info.versionName == null)
+			{	/* ignore packages installed in the system image */
+				continue;
+			}
+			attribute.addPackage(info.packageName, info.versionName);
+		}
+		return attribute;
+	}
+}