JAR signing logic for the apksigner-core library. (85b8a014) · Commits · e / os / android_build

tools/apksigner/Android.mk

0 → 100644

+19 −0

Original line number	Diff line number	Diff line
		#
		# Copyright (C) 2016 The Android Open Source Project
		#
		# 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
		#
		# Unless required by applicable law or agreed to in writing, software
		# 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.
		#

		LOCAL_PATH := $(call my-dir)

		include $(call all-makefiles-under,$(LOCAL_PATH))

tools/apksigner/core/Android.mk

0 → 100644

+26 −0

Original line number	Diff line number	Diff line
		#
		# Copyright (C) 2016 The Android Open Source Project
		#
		# 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
		#
		# Unless required by applicable law or agreed to in writing, software
		# 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.
		#
		LOCAL_PATH := $(call my-dir)

		# apksigner library, for signing APKs and verification signatures of APKs
		# ============================================================
		include $(CLEAR_VARS)
		LOCAL_MODULE := apksigner-core
		LOCAL_SRC_FILES := $(call all-java-files-under, src)
		LOCAL_JAVA_LIBRARIES = \
		bouncycastle-host \
		bouncycastle-bcpkix-host
		include $(BUILD_HOST_JAVA_LIBRARY)

tools/apksigner/core/src/com/android/apksigner/core/internal/apk/v1/DigestAlgorithm.java

0 → 100644

+42 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2016 The Android Open Source Project
		*
		* 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
		*
		* Unless required by applicable law or agreed to in writing, software
		* 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.
		*/

		package com.android.apksigner.core.internal.apk.v1;

		/**
		* Digest algorithm used with JAR signing (aka v1 signing scheme).
		*/
		public enum DigestAlgorithm {
		/** SHA-1 */
		SHA1("SHA-1"),

		/** SHA2-256 */
		SHA256("SHA-256");

		private final String mJcaMessageDigestAlgorithm;

		private DigestAlgorithm(String jcaMessageDigestAlgoritm) {
		mJcaMessageDigestAlgorithm = jcaMessageDigestAlgoritm;
		}

		/**
		* Returns the {@link java.security.MessageDigest} algorithm represented by this digest
		* algorithm.
		*/
		String getJcaMessageDigestAlgorithm() {
		return mJcaMessageDigestAlgorithm;
		}
		}

tools/apksigner/core/src/com/android/apksigner/core/internal/apk/v1/V1SchemeSigner.java

0 → 100644

+526 −0

File added.

Preview size limit exceeded, changes collapsed.

tools/apksigner/core/src/com/android/apksigner/core/internal/jar/ManifestWriter.java

0 → 100644

+124 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2016 The Android Open Source Project
		*
		* 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
		*
		* Unless required by applicable law or agreed to in writing, software
		* 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.
		*/

		package com.android.apksigner.core.internal.jar;

		import java.io.IOException;
		import java.io.OutputStream;
		import java.util.Map;
		import java.util.Set;
		import java.util.SortedMap;
		import java.util.TreeMap;
		import java.util.jar.Attributes;

		/**
		* Producer of {@code META-INF/MANIFEST.MF} file.
		*/
		public abstract class ManifestWriter {

		private static final byte[] CRLF = new byte[] {'\r', '\n'};
		private static final int MAX_LINE_LENGTH = 70;

		private ManifestWriter() {}

		public static void writeMainSection(OutputStream out, Attributes attributes)
		throws IOException {

		// Main section must start with the Manifest-Version attribute.
		// See https://docs.oracle.com/javase/8/docs/technotes/guides/jar/jar.html#Signed_JAR_File.
		String manifestVersion = attributes.getValue(Attributes.Name.MANIFEST_VERSION);
		if (manifestVersion == null) {
		throw new IllegalArgumentException(
		"Mandatory " + Attributes.Name.MANIFEST_VERSION + " attribute missing");
		}
		writeAttribute(out, Attributes.Name.MANIFEST_VERSION, manifestVersion);

		if (attributes.size() > 1) {
		SortedMap<String, String> namedAttributes = getAttributesSortedByName(attributes);
		namedAttributes.remove(Attributes.Name.MANIFEST_VERSION.toString());
		writeAttributes(out, namedAttributes);
		}
		writeSectionDelimiter(out);
		}

		public static void writeIndividualSection(OutputStream out, String name, Attributes attributes)
		throws IOException {
		writeAttribute(out, "Name", name);

		if (!attributes.isEmpty()) {
		writeAttributes(out, getAttributesSortedByName(attributes));
		}
		writeSectionDelimiter(out);
		}

		static void writeSectionDelimiter(OutputStream out) throws IOException {
		out.write(CRLF);
		}

		static void writeAttribute(OutputStream out, Attributes.Name name, String value)
		throws IOException {
		writeAttribute(out, name.toString(), value);
		}

		private static void writeAttribute(OutputStream out, String name, String value)
		throws IOException {
		writeLine(out, name + ": " + value);
		}

		private static void writeLine(OutputStream out, String line) throws IOException {
		byte[] lineBytes = line.getBytes("UTF-8");
		int offset = 0;
		int remaining = lineBytes.length;
		boolean firstLine = true;
		while (remaining > 0) {
		int chunkLength;
		if (firstLine) {
		// First line
		chunkLength = Math.min(remaining, MAX_LINE_LENGTH);
		} else {
		// Continuation line
		out.write(CRLF);
		out.write(' ');
		chunkLength = Math.min(remaining, MAX_LINE_LENGTH - 1);
		}
		out.write(lineBytes, offset, chunkLength);
		offset += chunkLength;
		remaining -= chunkLength;
		firstLine = false;
		}
		out.write(CRLF);
		}

		static SortedMap<String, String> getAttributesSortedByName(Attributes attributes) {
		Set<Map.Entry<Object, Object>> attributesEntries = attributes.entrySet();
		SortedMap<String, String> namedAttributes = new TreeMap<String, String>();
		for (Map.Entry<Object, Object> attribute : attributesEntries) {
		String attrName = attribute.getKey().toString();
		String attrValue = attribute.getValue().toString();
		namedAttributes.put(attrName, attrValue);
		}
		return namedAttributes;
		}

		static void writeAttributes(
		OutputStream out, SortedMap<String, String> attributesSortedByName) throws IOException {
		for (Map.Entry<String, String> attribute : attributesSortedByName.entrySet()) {
		String attrName = attribute.getKey();
		String attrValue = attribute.getValue();
		writeAttribute(out, attrName, attrValue);
		}
		}
		}