feat: Support customize signing levels

Author: zjns

api/android/revanced-library.api

@@ -29,17 +29,20 @@ public final class app/revanced/library/ApkSigner$Signer {
 	public final fun signApk (Lcom/android/tools/build/apkzlib/zip/ZFile;)V
 	public final fun signApk (Ljava/io/File;)V
 	public final fun signApk (Ljava/io/File;Ljava/io/File;)V
+	public final fun signApk (Ljava/io/File;Ljava/io/File;Ljava/util/Set;)V
 }
 
 public final class app/revanced/library/ApkUtils {
 	public static final field INSTANCE Lapp/revanced/library/ApkUtils;
 	public final fun applyTo (Lapp/revanced/patcher/PatcherResult;Ljava/io/File;)V
 	public final fun newPrivateKeyCertificatePair (Lapp/revanced/library/ApkUtils$PrivateKeyCertificatePairDetails;Lapp/revanced/library/ApkUtils$KeyStoreDetails;)Lapp/revanced/library/ApkSigner$PrivateKeyCertificatePair;
 	public final fun readPrivateKeyCertificatePairFromKeyStore (Lapp/revanced/library/ApkUtils$KeyStoreDetails;)Lapp/revanced/library/ApkSigner$PrivateKeyCertificatePair;
+	public final fun readSigningLevels (Ljava/io/File;)Ljava/util/Set;
 	public final fun sign (Ljava/io/File;Lapp/revanced/library/ApkUtils$SigningOptions;)V
 	public final fun sign (Ljava/io/File;Ljava/io/File;Lapp/revanced/library/ApkUtils$SigningOptions;)V
 	public final fun sign (Ljava/io/File;Ljava/io/File;Ljava/lang/String;Lapp/revanced/library/ApkSigner$PrivateKeyCertificatePair;)V
 	public final fun signApk (Ljava/io/File;Ljava/io/File;Ljava/lang/String;Lapp/revanced/library/ApkUtils$KeyStoreDetails;)V
+	public final fun signApk (Ljava/io/File;Ljava/io/File;Ljava/lang/String;Lapp/revanced/library/ApkUtils$KeyStoreDetails;Ljava/util/Set;)V
 }
 
 public final class app/revanced/library/ApkUtils$KeyStoreDetails {

api/jvm/revanced-library.api

@@ -29,17 +29,20 @@ public final class app/revanced/library/ApkSigner$Signer {
 	public final fun signApk (Lcom/android/tools/build/apkzlib/zip/ZFile;)V
 	public final fun signApk (Ljava/io/File;)V
 	public final fun signApk (Ljava/io/File;Ljava/io/File;)V
+	public final fun signApk (Ljava/io/File;Ljava/io/File;Ljava/util/Set;)V
 }
 
 public final class app/revanced/library/ApkUtils {
 	public static final field INSTANCE Lapp/revanced/library/ApkUtils;
 	public final fun applyTo (Lapp/revanced/patcher/PatcherResult;Ljava/io/File;)V
 	public final fun newPrivateKeyCertificatePair (Lapp/revanced/library/ApkUtils$PrivateKeyCertificatePairDetails;Lapp/revanced/library/ApkUtils$KeyStoreDetails;)Lapp/revanced/library/ApkSigner$PrivateKeyCertificatePair;
 	public final fun readPrivateKeyCertificatePairFromKeyStore (Lapp/revanced/library/ApkUtils$KeyStoreDetails;)Lapp/revanced/library/ApkSigner$PrivateKeyCertificatePair;
+	public final fun readSigningLevels (Ljava/io/File;)Ljava/util/Set;
 	public final fun sign (Ljava/io/File;Lapp/revanced/library/ApkUtils$SigningOptions;)V
 	public final fun sign (Ljava/io/File;Ljava/io/File;Lapp/revanced/library/ApkUtils$SigningOptions;)V
 	public final fun sign (Ljava/io/File;Ljava/io/File;Ljava/lang/String;Lapp/revanced/library/ApkSigner$PrivateKeyCertificatePair;)V
 	public final fun signApk (Ljava/io/File;Ljava/io/File;Ljava/lang/String;Lapp/revanced/library/ApkUtils$KeyStoreDetails;)V
+	public final fun signApk (Ljava/io/File;Ljava/io/File;Ljava/lang/String;Lapp/revanced/library/ApkUtils$KeyStoreDetails;Ljava/util/Set;)V
 }
 
 public final class app/revanced/library/ApkUtils$KeyStoreDetails {

src/commonMain/kotlin/app/revanced/library/ApkSigner.kt

@@ -331,12 +331,24 @@ object ApkSigner {
             signingExtension = null
         }
 
-        fun signApk(inputApkFile: File, outputApkFile: File) {
+        fun signApk(inputApkFile: File, outputApkFile: File, signingLevels: Set<Int>) {
             logger.info("Signing APK")
 
+            if (signingLevels.isNotEmpty() && signerBuilder != null) {
+                signerBuilder.setV1SigningEnabled(signingLevels.contains(1))
+                signerBuilder.setV2SigningEnabled(signingLevels.contains(2))
+                signerBuilder.setV3SigningEnabled(signingLevels.contains(3))
+                signerBuilder.setV4SigningEnabled(signingLevels.contains(4))
+            }
+
             signerBuilder?.setInputApk(inputApkFile)?.setOutputApk(outputApkFile)?.build()?.sign()
         }
 
+        @Deprecated("This constructor will be removed in the future.")
+        fun signApk(inputApkFile: File, outputApkFile: File) {
+            signApk(inputApkFile, outputApkFile, setOf())
+        }
+
         @Deprecated("This constructor will be removed in the future.")
         internal constructor(signingExtension: SigningExtension) {
             signerBuilder = null

src/commonMain/kotlin/app/revanced/library/ApkUtils.kt

@@ -2,6 +2,7 @@ package app.revanced.library
 
 import app.revanced.library.ApkSigner.newPrivateKeyCertificatePair
 import app.revanced.patcher.PatcherResult
+import com.android.apksig.ApkVerifier
 import com.android.tools.build.apkzlib.zip.AlignmentRules
 import com.android.tools.build.apkzlib.zip.StoredEntry
 import com.android.tools.build.apkzlib.zip.ZFile
@@ -153,20 +154,40 @@ object ApkUtils {
      * @param outputApkFile The file to save the signed apk to.
      * @param signer The name of the signer.
      * @param keyStoreDetails The details for the keystore.
+     * @param signingLevels Signature levels, empty to default.
      */
     fun signApk(
         inputApkFile: File,
         outputApkFile: File,
         signer: String,
         keyStoreDetails: KeyStoreDetails,
+        signingLevels: Set<Int>,
     ) = ApkSigner.newApkSigner(
         signer,
         if (keyStoreDetails.keyStore.exists()) {
             readPrivateKeyCertificatePairFromKeyStore(keyStoreDetails)
         } else {
             newPrivateKeyCertificatePair(PrivateKeyCertificatePairDetails(), keyStoreDetails)
         },
-    ).signApk(inputApkFile, outputApkFile)
+    ).signApk(inputApkFile, outputApkFile, signingLevels)
+
+    /**
+     * Signs [inputApkFile] with the given options and saves the signed apk to [outputApkFile].
+     * If [KeyStoreDetails.keyStore] does not exist,
+     * a new private key and certificate pair will be created and saved to the keystore.
+     *
+     * @param inputApkFile The apk file to sign.
+     * @param outputApkFile The file to save the signed apk to.
+     * @param signer The name of the signer.
+     * @param keyStoreDetails The details for the keystore.
+     */
+    @Deprecated("This method will be removed in the future.")
+    fun signApk(
+        inputApkFile: File,
+        outputApkFile: File,
+        signer: String,
+        keyStoreDetails: KeyStoreDetails,
+    ) = signApk(inputApkFile, outputApkFile, signer, keyStoreDetails, setOf())
 
     @Deprecated("This method will be removed in the future.")
     private fun readOrNewPrivateKeyCertificatePair(
@@ -235,6 +256,27 @@ object ApkUtils {
         readOrNewPrivateKeyCertificatePair(signingOptions),
     )
 
+    /**
+     * Read apk signature levels.
+     *
+     * Note: a well-signed apk is required.
+     */
+    fun readSigningLevels(apkFile: File): Set<Int> {
+        val verify = ApkVerifier.Builder(apkFile).build().verify()
+        if (!verify.isVerified)
+            return setOf()
+        val result = mutableSetOf<Int>()
+        if (verify.v1SchemeSigners.isNotEmpty())
+            result.add(1)
+        if (verify.v2SchemeSigners.isNotEmpty())
+            result.add(2)
+        if (verify.v3SchemeSigners.isNotEmpty())
+            result.add(3)
+        if (verify.v4SchemeSigners.isNotEmpty())
+            result.add(4)
+        return result
+    }
+
     /**
      * Options for signing an apk.
      *