feat: builtin magisk module supports

app/build.gradle.kts

@@ -8,6 +8,7 @@ plugins {
 apply {
     plugin<MyVersioningPlugin>()
     plugin<MySigningPlugin>()
+    plugin<MagiskModule>()
 }
 
 android {

buildSrc/src/main/kotlin/im/angry/openeuicc/build/MagiskModule.kt

@@ -0,0 +1,106 @@
+package im.angry.openeuicc.build
+
+import com.android.build.api.dsl.ApplicationDefaultConfig
+import org.gradle.api.Plugin
+import org.gradle.api.Project
+import java.io.ByteArrayOutputStream
+import java.net.URI
+import java.net.URL
+import java.util.zip.ZipEntry
+import java.util.zip.ZipOutputStream
+import kotlin.io.path.Path
+import kotlin.io.path.name
+
+
+class MagiskModule : Plugin<Project> {
+    override fun apply(target: Project) {
+        target.tasks.register("assembleMagiskModule") {
+            group = "magisk"
+            description = "Assembles the Magisk Module"
+
+            project.layout.buildDirectory
+                .file("outputs/magisk-module.zip")
+                .get().asFile
+                .writeBytes(buildMagiskModule(target))
+        }
+    }
+}
+
+private fun buildMagiskModule(target: Project) = buildZipFile {
+    val defaultConfig = target.defaultConfig
+    val appId = defaultConfig.applicationId
+    val apkPath = "system/system_ext/priv-app/OpenEUICC/OpenEUICC.apk"
+    put("module.prop") {
+        val module = buildList {
+            add("id" to appId.toString())
+            add("name" to "OpenEUICC")
+            add("version" to defaultConfig.versionName + defaultConfig.versionNameSuffix.orEmpty())
+            add("versionCode" to defaultConfig.versionCode.toString())
+            add("author" to "Peter Cai")
+            add("description" to "OpenEUICC provides system-level eUICC integration")
+            add("updateJson" to "")
+        }
+        module
+            .joinToString("\n") { (key, value) -> "${key}=${value}" }
+            .encodeToByteArray()
+    }
+    put("customize.sh") {
+        val copiedApkPath = "\$TMPDIR/${Path(apkPath).name}"
+        val script = buildString {
+            appendLine("chmod u+x \"\$MODPATH/uninstall.sh\"")
+
+            appendLine("cp \"\$MODPATH/$apkPath\" \"$copiedApkPath\"")
+            appendLine("pm install -r \"$copiedApkPath\"")
+            appendLine("rm -f \"$copiedApkPath\"")
+
+            appendLine("pm grant \"${appId}\" android.permission.READ_PHONE_STATE")
+        }
+        script.encodeToByteArray()
+    }
+    put("uninstall.sh") {
+        "pm uninstall ${appId}\n".encodeToByteArray()
+    }
+    put("META-INF/com/google/android/update-binary") {
+        val installerUri =
+            URI("https://github.com/topjohnwu/Magisk/raw/bf4ed29/scripts/module_installer.sh")
+        val connection = URL.of(installerUri, null).openConnection()
+        connection.inputStream.readBytes()
+    }
+    put("META-INF/com/google/android/updater-script") {
+        "#MAGISK\n".encodeToByteArray()
+    }
+    put(apkPath) {
+        target.layout.buildDirectory
+            .file("outputs/apk/debug/app-debug.apk")
+            .get().asFile
+            .readBytes()
+    }
+    put("system/system_ext/etc/permissions/privapp_whitelist_${appId}.xml") {
+        target.rootProject
+            .file("privapp_whitelist_${appId}.xml")
+            .readBytes()
+    }
+}
+
+private fun buildZipFile(builderAction: MutableMap<String, (ZipEntry) -> ByteArray>.() -> Unit): ByteArray {
+    val out = ByteArrayOutputStream()
+    val zip = ZipOutputStream(out)
+    for ((name, invoke) in buildMap(builderAction)) {
+        val entry = ZipEntry(name)
+        entry.time = 0 // reproducible builds
+        zip.putNextEntry(entry)
+        zip.write(invoke(entry))
+        zip.closeEntry()
+    }
+    zip.close()
+    out.close()
+    return out.toByteArray()
+}
+
+
+private val Project.defaultConfig: ApplicationDefaultConfig
+    get() = when (val android = extensions.findByName("android")) {
+        is com.android.build.gradle.AppExtension -> android.defaultConfig
+        is com.android.build.api.dsl.ApplicationExtension -> android.defaultConfig
+        else -> throw Exception("Unavailable Android configuration")
+    }