Merge "XmlUtils: Fix hex parsing in readThisByteArrayXml" into qt-qpr1-dev (2e463f4b) · Commits · e / os / android_frameworks_base

core/java/com/android/internal/util/XmlUtils.java

+7 −21

Original line number	Diff line number	Diff line
		@@ -26,6 +26,8 @@ import android.util.ArrayMap;
		import android.util.Base64;
		import android.util.Xml;

		import libcore.util.HexEncoding;

		import org.xmlpull.v1.XmlPullParser;
		import org.xmlpull.v1.XmlPullParserException;
		import org.xmlpull.v1.XmlSerializer;
		@@ -396,16 +398,7 @@ public class XmlUtils {
		final int N = val.length;
		out.attribute(null, "num", Integer.toString(N));

		StringBuilder sb = new StringBuilder(val.length*2);
		for (int i=0; i<N; i++) {
		int b = val[i];
		int h = (b >> 4) & 0x0f;
		sb.append((char)(h >= 10 ? ('a'+h-10) : ('0'+h)));
		h = b & 0x0f;
		sb.append((char)(h >= 10 ? ('a'+h-10) : ('0'+h)));
		}

		out.text(sb.toString());
		out.text(HexEncoding.encodeToString(val).toLowerCase());

		out.endTag(null, "byte-array");
		}
		@@ -1032,7 +1025,9 @@ public class XmlUtils {
		"Not a number in num attribute in byte-array");
		}

		byte[] array = new byte[num];
		// 0 len byte array does not have a text in the XML tag. So, initialize to 0 len array.
		// For all other array lens, HexEncoding.decode() below overrides the array.
		byte[] array = new byte[0];

		int eventType = parser.getEventType();
		do {
		@@ -1043,16 +1038,7 @@ public class XmlUtils {
		throw new XmlPullParserException(
		"Invalid value found in byte-array: " + values);
		}
		// This is ugly, but keeping it to mirror the logic in #writeByteArrayXml.
		for (int i = 0; i < num; i ++) {
		char nibbleHighChar = values.charAt(2 * i);
		char nibbleLowChar = values.charAt(2 * i + 1);
		int nibbleHigh = nibbleHighChar > 'a' ? (nibbleHighChar - 'a' + 10)
		: (nibbleHighChar - '0');
		int nibbleLow = nibbleLowChar > 'a' ? (nibbleLowChar - 'a' + 10)
		: (nibbleLowChar - '0');
		array[i] = (byte) ((nibbleHigh & 0x0F) << 4 \| (nibbleLow & 0x0F));
		}
		array = HexEncoding.decode(values);
		}
		} else if (eventType == parser.END_TAG) {
		if (parser.getName().equals(endTag)) {

core/tests/utiltests/src/com/android/internal/util/XmlUtilsTest.java

+28 −0

Original line number	Diff line number	Diff line
		@@ -16,13 +16,22 @@

		package com.android.internal.util;

		import static org.junit.Assert.assertArrayEquals;

		import android.util.Xml;

		import java.io.ByteArrayInputStream;
		import java.io.ByteArrayOutputStream;
		import java.io.InputStream;
		import java.nio.charset.StandardCharsets;
		import java.util.HashMap;
		import java.util.Map;

		import junit.framework.TestCase;

		import org.xmlpull.v1.XmlPullParser;
		import org.xmlpull.v1.XmlSerializer;

		public class XmlUtilsTest extends TestCase {

		// https://code.google.com/p/android/issues/detail?id=63717
		@@ -38,4 +47,23 @@ public class XmlUtilsTest extends TestCase {
		assertEquals("nullValue", deserialized.get(null));
		assertEquals("fooValue", deserialized.get("foo"));
		}

		public void testreadWriteXmlByteArrayValue() throws Exception {
		byte[] testByteArray = {0x1 , 0xa, 0xb, 0x9, 0x34, (byte) 0xaa, (byte) 0xba, (byte) 0x99};

		ByteArrayOutputStream baos = new ByteArrayOutputStream(1024);
		XmlSerializer serializer = new FastXmlSerializer();
		serializer.setOutput(baos, StandardCharsets.UTF_8.name());
		serializer.startDocument(null, true);
		XmlUtils.writeValueXml(testByteArray, "testByteArray", serializer);
		serializer.endDocument();

		InputStream bais = new ByteArrayInputStream(baos.toByteArray());
		XmlPullParser pullParser = Xml.newPullParser();
		pullParser.setInput(bais, StandardCharsets.UTF_8.name());
		String[] name = new String[1];
		byte[] testByteArrayDeserialized = (byte[]) XmlUtils.readValueXml(pullParser, name);
		assertEquals("testByteArray", name[0]);
		assertArrayEquals(testByteArray, testByteArrayDeserialized);
		}
		}