Initial draft for porting this project to Gradle + Kotlin
This is one of my stupidest idea ever.
This commit is contained in:
Mygod
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/*******************************************************************************
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* *
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* Copyright (C) 2017 by Max Lv <max.c.lv@gmail.com> *
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* Copyright (C) 2017 by Mygod Studio <contact-shadowsocks-android@mygod.be> *
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* *
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* This program is free software: you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation, either version 3 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program. If not, see <http://www.gnu.org/licenses/>. *
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* *
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*******************************************************************************/
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package com.github.shadowsocks.plugin
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import android.annotation.SuppressLint
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import android.content.ContentResolver
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import android.content.Intent
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import android.content.pm.PackageManager
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import android.content.pm.Signature
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import android.net.Uri
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import android.os.Bundle
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import android.util.Base64
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import android.util.Log
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import com.github.shadowsocks.App.Companion.app
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import com.github.shadowsocks.utils.Commandline
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import eu.chainfire.libsuperuser.Shell
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import java.io.File
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import java.io.FileNotFoundException
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object PluginManager {
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/**
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* Trusted signatures by the app. Third-party fork should add their public key to their fork if the developer wishes
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* to publish or has published plugins for this app. You can obtain your public key by executing:
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*
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* $ keytool -export -alias key-alias -keystore /path/to/keystore.jks -rfc
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*
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* If you don't plan to publish any plugin but is developing/has developed some, it's not necessary to add your
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* public key yet since it will also automatically trust packages signed by the same signatures, e.g. debug keys.
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*/
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val trustedSignatures by lazy {
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app.info.signatures.toSet() +
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Signature(Base64.decode( // @Mygod
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"""
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""", Base64.DEFAULT)) +
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Signature(Base64.decode( // @madeye
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"""
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|MIICQzCCAaygAwIBAgIETV9OhjANBgkqhkiG9w0BAQUFADBmMQswCQYDVQQGEwJjbjERMA8GA1UE
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|CBMIU2hhbmdoYWkxDzANBgNVBAcTBlB1ZG9uZzEUMBIGA1UEChMLRnVkYW4gVW5pdi4xDDAKBgNV
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|BAsTA1BQSTEPMA0GA1UEAxMGTWF4IEx2MB4XDTExMDIxOTA1MDA1NFoXDTM2MDIxMzA1MDA1NFow
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|ZjELMAkGA1UEBhMCY24xETAPBgNVBAgTCFNoYW5naGFpMQ8wDQYDVQQHEwZQdWRvbmcxFDASBgNV
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|BAoTC0Z1ZGFuIFVuaXYuMQwwCgYDVQQLEwNQUEkxDzANBgNVBAMTBk1heCBMdjCBnzANBgkqhkiG
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|9w0BAQEFAAOBjQAwgYkCgYEAq6lA8LqdeEI+es9SDX85aIcx8LoL3cc//iRRi+2mFIWvzvZ+bLKr
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|4Wd0rhu/iU7OeMm2GvySFyw/GdMh1bqh5nNPLiRxAlZxpaZxLOdRcxuvh5Nc5yzjM+QBv8ECmuvu
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|AOvvT3UDmA0AMQjZqSCmxWIxc/cClZ/0DubreBo2st0CAwEAATANBgkqhkiG9w0BAQUFAAOBgQAQ
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|1iNuLIssdhDz3IL9Yg==
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""", Base64.DEFAULT))
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}
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private val receiver by lazy { app.listenForPackageChanges { synchronized(this) { cachedPlugins = null } } }
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private var cachedPlugins: Map<String, Plugin>? = null
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fun fetchPlugins(): Map<String, Plugin> {
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receiver
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return synchronized(this) {
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if (cachedPlugins == null) {
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val pm = app.packageManager
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cachedPlugins = (pm.queryIntentContentProviders(Intent(PluginContract.ACTION_NATIVE_PLUGIN),
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PackageManager.GET_META_DATA).map { NativePlugin(it) } + NoPlugin).associate { it.id to it }
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}
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cachedPlugins!!
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}
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}
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private fun buildUri(id: String) = Uri.Builder()
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.scheme(PluginContract.SCHEME)
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.authority(PluginContract.AUTHORITY)
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.path('/' + id)
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.build()
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fun buildIntent(id: String, action: String): Intent = Intent(action, buildUri(id))
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// the following parts are meant to be used by :bg
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@Throws(Throwable::class)
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fun init(options: PluginOptions): String? {
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if (options.id.isEmpty()) return null
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var throwable: Throwable? = null
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try {
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val path = initNative(options)
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if (path != null) return path
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} catch (t: Throwable) {
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t.printStackTrace()
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if (throwable == null) throwable = t
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}
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// add other plugin types here
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throw if (throwable != null) throwable else
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FileNotFoundException(app.getString(com.github.shadowsocks.R.string.plugin_unknown, options.id))
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}
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private fun initNative(options: PluginOptions): String? {
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val providers = app.packageManager.queryIntentContentProviders(
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Intent(PluginContract.ACTION_NATIVE_PLUGIN, buildUri(options.id)), 0)
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assert(providers.size == 1)
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val uri = Uri.Builder()
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.scheme(ContentResolver.SCHEME_CONTENT)
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.authority(providers[0].providerInfo.authority)
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.build()
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val cr = app.contentResolver
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return try {
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initNativeFast(cr, options, uri)
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} catch (t: Throwable) {
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t.printStackTrace()
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Log.w("PluginManager", "Initializing native plugin fast mode failed. Falling back to slow mode.")
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initNativeSlow(cr, options, uri)
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}
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}
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private fun initNativeFast(cr: ContentResolver, options: PluginOptions, uri: Uri): String {
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val out = Bundle()
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out.putString(PluginContract.EXTRA_OPTIONS, options.id)
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val result = cr.call(uri, PluginContract.METHOD_GET_EXECUTABLE, null, out)
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.getString(PluginContract.EXTRA_ENTRY)
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assert(File(result).canExecute())
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return result
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}
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@SuppressLint("Recycle")
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private fun initNativeSlow(cr: ContentResolver, options: PluginOptions, uri: Uri): String? {
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var initialized = false
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fun entryNotFound(): Nothing = throw IndexOutOfBoundsException("Plugin entry binary not found")
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val list = ArrayList<String>()
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val pluginDir = File(app.filesDir, "plugin")
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(cr.query(uri, arrayOf(PluginContract.COLUMN_PATH, PluginContract.COLUMN_MODE), null, null, null)
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?: return null).use { cursor ->
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if (!cursor.moveToFirst()) entryNotFound()
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pluginDir.deleteRecursively()
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if (!pluginDir.mkdirs()) throw FileNotFoundException("Unable to create plugin directory")
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val pluginDirPath = pluginDir.absolutePath + '/'
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do {
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val path = cursor.getString(0)
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val file = File(pluginDir, path)
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assert(file.absolutePath.startsWith(pluginDirPath))
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cr.openInputStream(uri.buildUpon().path(path).build()).use { inStream ->
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file.outputStream().use { outStream -> inStream.copyTo(outStream) }
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}
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list += Commandline.toString(arrayOf("chmod", cursor.getString(1), file.absolutePath))
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if (path == options.id) initialized = true
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} while (cursor.moveToNext())
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}
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if (!initialized) entryNotFound()
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Shell.SH.run(list)
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return File(pluginDir, options.id).absolutePath
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}
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}
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