Merge pull request #1007 from lbryio/first-run-install-id

generate install_id natively

app/build.gradle

@@ -117,6 +117,7 @@ dependencies {
 
     implementation 'com.arthenica:mobile-ffmpeg-full-gpl:4.3.1.LTS'
 
+    implementation 'org.bitcoinj:bitcoinj-tools:0.14.7'
     implementation 'org.java-websocket:Java-WebSocket:1.5.1'
 
     compileOnly 'org.projectlombok:lombok:1.18.10'

app/src/main/java/io/lbry/browser/FirstRunActivity.java

@@ -15,12 +15,22 @@ import androidx.appcompat.app.AppCompatActivity;
 import androidx.core.text.HtmlCompat;
 import androidx.preference.PreferenceManager;
 
+import java.io.BufferedReader;
+import java.io.BufferedWriter;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.io.InputStreamReader;
+
 import io.lbry.browser.exceptions.AuthTokenInvalidatedException;
 import io.lbry.browser.utils.Helper;
 import io.lbry.browser.utils.Lbry;
 import io.lbry.browser.utils.LbryAnalytics;
 import io.lbry.browser.utils.Lbryio;
 import io.lbry.lbrysdk.LbrynetService;
+import io.lbry.lbrysdk.ServiceHelper;
+import io.lbry.lbrysdk.Utils;
 
 public class FirstRunActivity extends AppCompatActivity {
 
@@ -44,12 +54,7 @@ public class FirstRunActivity extends AppCompatActivity {
         });
 
         registerAuthReceiver();
-        if (!Lbry.SDK_READY) {
         findViewById(R.id.welcome_wait_container).setVisibility(View.VISIBLE);
-        } else {
-            authenticate();
-        }
-
         IntentFilter filter = new IntentFilter();
         filter.addAction(MainActivity.ACTION_SDK_READY);
         filter.addAction(LbrynetService.ACTION_STOP_SERVICE);
@@ -62,10 +67,38 @@ public class FirstRunActivity extends AppCompatActivity {
                     authenticate();
                 } else if (LbrynetService.ACTION_STOP_SERVICE.equals(action)) {
                     finish();
+                    if (MainActivity.instance != null) {
+                        MainActivity.instance.finish();
+                    }
                 }
             }
         };
         registerReceiver(sdkReceiver, filter);
+
+        CheckInstallIdTask task = new CheckInstallIdTask(this, new CheckInstallIdTask.InstallIdHandler() {
+            @Override
+            public void onInstallIdChecked(boolean result) {
+                // start the sdk from FirstRun
+                boolean serviceRunning = MainActivity.isServiceRunning(MainActivity.instance, LbrynetService.class);
+                if (!serviceRunning) {
+                    Lbry.SDK_READY = false;
+                    ServiceHelper.start(MainActivity.instance, "", LbrynetService.class, "lbrynetservice");
+                }
+
+                if (result) {
+                    // install_id generated and validated, authenticate now
+                    authenticate();
+                    return;
+                }
+
+                // we weren't able to generate the install_id ourselves, depend on the sdk for that
+                if (Lbry.SDK_READY) {
+                    authenticate();
+                    return;
+                }
+            }
+        });
+        task.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
     }
 
     public void onResume() {
@@ -134,6 +167,75 @@ public class FirstRunActivity extends AppCompatActivity {
         super.onDestroy();
     }
 
+    private void generateIdAndAuthenticate() {
+
+    }
+
+    private static class CheckInstallIdTask extends AsyncTask<Void, Void, Boolean> {
+        private Context context;
+        private InstallIdHandler handler;
+        public CheckInstallIdTask(Context context, InstallIdHandler handler) {
+            this.context = context;
+            this.handler = handler;
+        }
+        protected Boolean doInBackground(Void... params) {
+            // Load the installation id from the file system
+            String lbrynetDir = String.format("%s/%s", Utils.getAppInternalStorageDir(context), "lbrynet");
+            File dir = new File(lbrynetDir);
+            boolean dirExists = dir.isDirectory();
+            if (!dirExists) {
+                dirExists = dir.mkdirs();
+            }
+
+            if (!dirExists) {
+                return false;
+            }
+
+            String installIdPath = String.format("%s/install_id", lbrynetDir);
+            File file = new File(installIdPath);
+            String installId  = null;
+            if (!file.exists()) {
+                // generate the install_id
+                installId = Lbry.generateId();
+                BufferedWriter writer = null;
+                try {
+                    writer = new BufferedWriter(new FileWriter(file));
+                    writer.write(installId);
+                    android.util.Log.d("LbryMain", "Generated install ID=" + installId);
+                } catch (IOException ex) {
+                    return false;
+                } finally {
+                    Helper.closeCloseable(writer);
+                }
+            } else {
+                // read the installation id from the file
+                BufferedReader reader = null;
+                try {
+                    reader = new BufferedReader(new InputStreamReader(new FileInputStream(installIdPath)));
+                    installId = reader.readLine();
+                } catch (IOException ex) {
+                    return false;
+                } finally {
+                    Helper.closeCloseable(reader);
+                }
+            }
+
+            if (!Helper.isNullOrEmpty(installId)) {
+                Lbry.INSTALLATION_ID = installId;
+            }
+            return !Helper.isNullOrEmpty(installId);
+        }
+        protected void onPostExecute(Boolean result) {
+            if (handler != null) {
+                handler.onInstallIdChecked(result);
+            }
+        }
+
+        public interface InstallIdHandler {
+            void onInstallIdChecked(boolean result);
+        }
+    }
+
     private static class AuthenticateTask extends AsyncTask<Void, Void, Void> {
         private Context context;
         public AuthenticateTask(Context context) {

app/src/main/java/io/lbry/browser/MainActivity.java

@@ -211,6 +211,7 @@ public class MainActivity extends AppCompatActivity implements SdkStatusListener
     private static final String SPECIAL_URL_PREFIX = "lbry://?";
     private static final int REMOTE_NOTIFICATION_REFRESH_TTL = 300000; // 5 minutes
     public static final String SKU_SKIP = "lbryskip";
+    public static MainActivity instance;
 
     private boolean shuttingDown;
     private Date remoteNotifcationsLastLoaded;
@@ -393,6 +394,7 @@ public class MainActivity extends AppCompatActivity implements SdkStatusListener
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
+        instance = this;
         // workaround to fix dark theme because https://issuetracker.google.com/issues/37124582
         try {
             new WebView(this);
@@ -1140,6 +1142,7 @@ public class MainActivity extends AppCompatActivity implements SdkStatusListener
         checkFirstRun();
         checkNowPlaying();
 
+        if (isFirstRunCompleted()) {
             // check (and start) the LBRY SDK service
             serviceRunning = isServiceRunning(this, LbrynetService.class);
             if (!serviceRunning) {
@@ -1147,6 +1150,7 @@ public class MainActivity extends AppCompatActivity implements SdkStatusListener
                 //findViewById(R.id.global_sdk_initializing_status).setVisibility(View.VISIBLE);
                 ServiceHelper.start(this, "", LbrynetService.class, "lbrynetservice");
             }
+        }
         checkSdkReady();
         showSignedInUser();
         checkPendingOpens();
@@ -1156,6 +1160,11 @@ public class MainActivity extends AppCompatActivity implements SdkStatusListener
         }*/
     }
 
+    public boolean isFirstRunCompleted() {
+        SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(this);
+        return sp.getBoolean(PREFERENCE_KEY_INTERNAL_FIRST_RUN_COMPLETED, false);
+    }
+
     private void checkPurchases() {
         if (billingClient != null) {
             Purchase.PurchasesResult result = billingClient.queryPurchases(BillingClient.SkuType.INAPP);

app/src/main/java/io/lbry/browser/utils/Helper.java

@@ -20,7 +20,6 @@ import android.provider.MediaStore;
 import android.text.method.LinkMovementMethod;
 import android.view.ContextMenu;
 import android.view.View;
-import android.widget.LinearLayout;
 import android.widget.ProgressBar;
 import android.widget.TextView;
 
@@ -32,6 +31,7 @@ import androidx.recyclerview.widget.RecyclerView;
 
 import com.google.android.gms.common.util.Hex;
 
+import org.bitcoinj.core.Base58;
 import org.json.JSONArray;
 import org.json.JSONException;
 import org.json.JSONObject;

app/src/main/java/io/lbry/browser/utils/Lbry.java

@@ -2,12 +2,15 @@ package io.lbry.browser.utils;
 
 import android.util.Log;
 
+import org.bitcoinj.core.Base58;
 import org.json.JSONArray;
 import org.json.JSONException;
 import org.json.JSONObject;
 
 import java.io.IOException;
 import java.security.KeyStore;
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collections;
@@ -17,6 +20,7 @@ import java.util.Iterator;
 import java.util.LinkedHashMap;
 import java.util.List;
 import java.util.Map;
+import java.util.Random;
 import java.util.concurrent.TimeUnit;
 
 import io.lbry.browser.exceptions.ApiCallException;
@@ -522,4 +526,20 @@ public final class Lbry {
             }
         }
     }
+
+    public static String generateId() {
+        return generateId(64);
+    }
+    public static String generateId(int numBytes) {
+        byte[] arr = new byte[numBytes];
+        new Random().nextBytes(arr);
+        try {
+            MessageDigest md = MessageDigest.getInstance("SHA-384");
+            byte[] hash = md.digest(arr);
+            return Base58.encode(hash);
+        } catch (NoSuchAlgorithmException e) {
+            // pass
+            return null;
+        }
+    }
 }