dump apk signing version (66c5553c) · Commits · e / os / android_frameworks_base

core/java/android/content/pm/PackageParser.java

+19 −2

Original line number	Diff line number	Diff line
		@@ -121,6 +121,10 @@ public class PackageParser {

		private static final int MAX_PACKAGES_PER_APK = 5;

		public static final int APK_SIGNING_UNKNOWN = 0;
		public static final int APK_SIGNING_V1 = 1;
		public static final int APK_SIGNING_V2 = 2;

		// TODO: switch outError users to PackageParserException
		// TODO: refactor "codePath" to "apkPath"

		@@ -1058,12 +1062,24 @@ public class PackageParser {
		return pkg;
		}

		public static int getApkSigningVersion(Package pkg) {
		try {
		if (ApkSignatureSchemeV2Verifier.hasSignature(pkg.baseCodePath)) {
		return APK_SIGNING_V2;
		}
		return APK_SIGNING_V1;
		} catch (IOException e) {
		}
		return APK_SIGNING_UNKNOWN;
		}

		/**
		* Collect certificates from all the APKs described in the given package,
		* populating {@link Package#mSignatures}. Also asserts that all APK
		* contents are signed correctly and consistently.
		*/
		public static void collectCertificates(Package pkg, int parseFlags) throws PackageParserException {
		public static void collectCertificates(Package pkg, int parseFlags)
		throws PackageParserException {
		collectCertificatesInternal(pkg, parseFlags);
		final int childCount = (pkg.childPackages != null) ? pkg.childPackages.size() : 0;
		for (int i = 0; i < childCount; i++) {
		@@ -1074,7 +1090,8 @@ public class PackageParser {
		}
		}

		private static void collectCertificatesInternal(Package pkg, int parseFlags) throws PackageParserException {
		private static void collectCertificatesInternal(Package pkg, int parseFlags)
		throws PackageParserException {
		pkg.mCertificates = null;
		pkg.mSignatures = null;
		pkg.mSigningKeys = null;

core/java/android/util/apk/ApkSignatureSchemeV2Verifier.java

+69 −25

Original line number	Diff line number	Diff line
		@@ -74,6 +74,36 @@ public class ApkSignatureSchemeV2Verifier {
		public static final String SF_ATTRIBUTE_ANDROID_APK_SIGNED_NAME = "X-Android-APK-Signed";
		public static final int SF_ATTRIBUTE_ANDROID_APK_SIGNED_ID = 2;

		/**
		* Returns {@code true} if the provided APK contains an APK Signature Scheme V2
		* signature. The signature will not be verified.
		*/
		public static boolean hasSignature(String apkFile) throws IOException {
		try (RandomAccessFile apk = new RandomAccessFile(apkFile, "r")) {
		long fileSize = apk.length();
		if (fileSize > Integer.MAX_VALUE) {
		return false;
		}
		MappedByteBuffer apkContents =
		apk.getChannel().map(FileChannel.MapMode.READ_ONLY, 0, fileSize);
		// ZipUtils and APK Signature Scheme v2 verifier expect little-endian byte order.
		apkContents.order(ByteOrder.LITTLE_ENDIAN);

		final int centralDirOffset =
		(int) getCentralDirOffset(apkContents, getEocdOffset(apkContents));
		// Find the APK Signing Block.
		int apkSigningBlockOffset = findApkSigningBlock(apkContents, centralDirOffset);
		ByteBuffer apkSigningBlock =
		sliceFromTo(apkContents, apkSigningBlockOffset, centralDirOffset);

		// Find the APK Signature Scheme v2 Block inside the APK Signing Block.
		findApkSignatureSchemeV2Block(apkSigningBlock);
		return true;
		} catch (SignatureNotFoundException e) {
		}
		return false;
		}

		/**
		* Verifies APK Signature Scheme v2 signatures of the provided APK and returns the certificates
		* associated with each signer.
		@@ -130,31 +160,8 @@ public class ApkSignatureSchemeV2Verifier {
		// ZipUtils and APK Signature Scheme v2 verifier expect little-endian byte order.
		apkContents.order(ByteOrder.LITTLE_ENDIAN);

		// Find the offset of ZIP End of Central Directory (EoCD)
		int eocdOffset = ZipUtils.findZipEndOfCentralDirectoryRecord(apkContents);
		if (eocdOffset == -1) {
		throw new SignatureNotFoundException(
		"Not an APK file: ZIP End of Central Directory record not found");
		}
		if (ZipUtils.isZip64EndOfCentralDirectoryLocatorPresent(apkContents, eocdOffset)) {
		throw new SignatureNotFoundException("ZIP64 APK not supported");
		}
		ByteBuffer eocd = sliceFromTo(apkContents, eocdOffset, apkContents.capacity());

		// Look up the offset of ZIP Central Directory.
		long centralDirOffsetLong = ZipUtils.getZipEocdCentralDirectoryOffset(eocd);
		if (centralDirOffsetLong >= eocdOffset) {
		throw new SignatureNotFoundException(
		"ZIP Central Directory offset out of range: " + centralDirOffsetLong
		+ ". ZIP End of Central Directory offset: " + eocdOffset);
		}
		long centralDirSizeLong = ZipUtils.getZipEocdCentralDirectorySizeBytes(eocd);
		if (centralDirOffsetLong + centralDirSizeLong != eocdOffset) {
		throw new SignatureNotFoundException(
		"ZIP Central Directory is not immediately followed by End of Central"
		+ " Directory");
		}
		int centralDirOffset = (int) centralDirOffsetLong;
		final int eocdOffset = getEocdOffset(apkContents);
		final int centralDirOffset = (int) getCentralDirOffset(apkContents, eocdOffset);

		// Find the APK Signing Block.
		int apkSigningBlockOffset = findApkSigningBlock(apkContents, centralDirOffset);
		@@ -499,6 +506,43 @@ public class ApkSignatureSchemeV2Verifier {
		return result;
		}

		/**
		* Finds the offset of ZIP End of Central Directory (EoCD).
		*
		* @throws SignatureNotFoundException If the EoCD could not be found
		*/
		private static int getEocdOffset(ByteBuffer apkContents) throws SignatureNotFoundException {
		int eocdOffset = ZipUtils.findZipEndOfCentralDirectoryRecord(apkContents);
		if (eocdOffset == -1) {
		throw new SignatureNotFoundException(
		"Not an APK file: ZIP End of Central Directory record not found");
		}
		return eocdOffset;
		}

		private static long getCentralDirOffset(ByteBuffer apkContents, int eocdOffset)
		throws SignatureNotFoundException {
		if (ZipUtils.isZip64EndOfCentralDirectoryLocatorPresent(apkContents, eocdOffset)) {
		throw new SignatureNotFoundException("ZIP64 APK not supported");
		}
		ByteBuffer eocd = sliceFromTo(apkContents, eocdOffset, apkContents.capacity());

		// Look up the offset of ZIP Central Directory.
		long centralDirOffsetLong = ZipUtils.getZipEocdCentralDirectoryOffset(eocd);
		if (centralDirOffsetLong >= eocdOffset) {
		throw new SignatureNotFoundException(
		"ZIP Central Directory offset out of range: " + centralDirOffsetLong
		+ ". ZIP End of Central Directory offset: " + eocdOffset);
		}
		long centralDirSizeLong = ZipUtils.getZipEocdCentralDirectorySizeBytes(eocd);
		if (centralDirOffsetLong + centralDirSizeLong != eocdOffset) {
		throw new SignatureNotFoundException(
		"ZIP Central Directory is not immediately followed by End of Central"
		+ " Directory");
		}
		return centralDirOffsetLong;
		}

		private static final int getChunkCount(int inputSizeBytes) {
		return (inputSizeBytes + CHUNK_SIZE_BYTES - 1) / CHUNK_SIZE_BYTES;
		}

services/core/java/com/android/server/pm/Settings.java

+4 −1

Original line number	Diff line number	Diff line
		@@ -2604,7 +2604,6 @@ final class Settings {
		if (pkg.volumeUuid != null) {
		serializer.attribute(null, "volumeUuid", pkg.volumeUuid);
		}

		if (pkg.parentPackageName != null) {
		serializer.attribute(null, "parentPackageName", pkg.parentPackageName);
		}
		@@ -4316,6 +4315,10 @@ final class Settings {
		}
		pw.print(prefix); pw.print(" versionName="); pw.println(ps.pkg.mVersionName);
		pw.print(prefix); pw.print(" splits="); dumpSplitNames(pw, ps.pkg); pw.println();
		final int apkSigningVersion = PackageParser.getApkSigningVersion(ps.pkg);
		if (apkSigningVersion != PackageParser.APK_SIGNING_UNKNOWN) {
		pw.print(prefix); pw.print(" apkSigningVersion="); pw.println(apkSigningVersion);
		}
		pw.print(prefix); pw.print(" applicationInfo=");
		pw.println(ps.pkg.applicationInfo.toString());
		pw.print(prefix); pw.print(" flags="); printFlags(pw, ps.pkg.applicationInfo.flags,