Support sending logs on password verification screen

lib/core/configuration.dart

@@ -29,6 +29,7 @@ import 'package:photos/services/memories_service.dart';
 import 'package:photos/services/search_service.dart';
 import 'package:photos/services/sync_service.dart';
 import 'package:photos/utils/crypto_util.dart';
+import 'package:photos/utils/validator_util.dart';
 import 'package:shared_preferences/shared_preferences.dart';
 import 'package:uuid/uuid.dart';
 import 'package:wakelock/wakelock.dart';
@@ -242,12 +243,18 @@ class Configuration {
     String password,
     KeyAttributes attributes,
   ) async {
+    _logger.info('Start decryptAndSaveSecrets');
+    validatePreVerificationStateCheck(
+        attributes, password, getEncryptedToken());
+    _logger.info('state validation done');
     final kek = await CryptoUtil.deriveKey(
       utf8.encode(password),
       Sodium.base642bin(attributes.kekSalt),
       attributes.memLimit,
       attributes.opsLimit,
     );
+
+    _logger.info('user-key done');
     Uint8List key;
     try {
       key = CryptoUtil.decryptSync(
@@ -256,20 +263,24 @@ class Configuration {
         Sodium.base642bin(attributes.keyDecryptionNonce),
       );
     } catch (e) {
+      _logger.severe('master-key failed, incorrect password?');
       throw Exception("Incorrect password");
     }
+    _logger.info("master-key done");
     await setKey(Sodium.bin2base64(key));
     final secretKey = CryptoUtil.decryptSync(
       Sodium.base642bin(attributes.encryptedSecretKey),
       key,
       Sodium.base642bin(attributes.secretKeyDecryptionNonce),
     );
+    _logger.info("secret-key done");
     await setSecretKey(Sodium.bin2base64(secretKey));
     final token = CryptoUtil.openSealSync(
       Sodium.base642bin(getEncryptedToken()),
       Sodium.base642bin(attributes.publicKey),
       secretKey,
     );
+    _logger.info('appToken done');
     await setToken(
       Sodium.bin2base64(token, variant: Sodium.base64VariantUrlsafe),
     );

lib/ui/account/password_reentry_page.dart

@@ -3,10 +3,13 @@ import 'package:logging/logging.dart';
 import 'package:photos/core/configuration.dart';
 import 'package:photos/core/event_bus.dart';
 import 'package:photos/events/subscription_purchased_event.dart';
+import 'package:photos/models/key_attributes.dart';
 import 'package:photos/ui/account/recovery_page.dart';
+import 'package:photos/ui/common/dialogs.dart';
 import 'package:photos/ui/common/dynamic_fab.dart';
 import 'package:photos/ui/home_widget.dart';
 import 'package:photos/utils/dialog_util.dart';
+import 'package:photos/utils/email_util.dart';
 
 class PasswordReentryPage extends StatefulWidget {
   const PasswordReentryPage({Key key}) : super(key: key);
@@ -16,6 +19,7 @@ class PasswordReentryPage extends StatefulWidget {
 }
 
 class _PasswordReentryPageState extends State<PasswordReentryPage> {
+  final _logger = Logger((_PasswordReentryPageState).toString());
   final _passwordController = TextEditingController();
   final FocusNode _passwordFocusNode = FocusNode();
   String email;
@@ -72,9 +76,26 @@ class _PasswordReentryPageState extends State<PasswordReentryPage> {
               Configuration.instance.getKeyAttributes(),
             );
           } catch (e, s) {
-            Logger("PRP").severe("Password verification failed", e, s);
+            _logger.severe("Password verification failed", e, s);
             await dialog.hide();
-            showErrorDialog(context, "Incorrect password", "Please try again");
+
+            var dialogUserChoice = await showChoiceDialog(
+              context,
+              "Incorrect password",
+              "Please try again",
+              firstAction: "Contact Support",
+              firstActionColor: Theme.of(context).colorScheme.primary,
+              secondAction: "Ok",
+              secondActionColor: Theme.of(context).colorScheme.primary,
+            );
+            if (dialogUserChoice == DialogUserChoice.firstChoice) {
+              await sendLogs(
+                context,
+                "Contact support",
+                "support@ente.io",
+                postShare: () {},
+              );
+            }
             return;
           }
           await dialog.hide();
@@ -231,4 +252,10 @@ class _PasswordReentryPageState extends State<PasswordReentryPage> {
       ],
     );
   }
+
+  void validatePreVerificationState(KeyAttributes keyAttributes) {
+    if (keyAttributes == null) {
+      throw Exception("Key Attributes can not be null");
+    }
+  }
 }

lib/utils/validator_util.dart

@@ -0,0 +1,50 @@
+import 'dart:convert';
+import 'dart:typed_data';
+
+import 'package:logging/logging.dart';
+import 'package:photos/models/key_attributes.dart';
+
+Logger _logger = Logger("Validator");
+
+void validatePreVerificationStateCheck(
+  KeyAttributes keyAttr,
+  String password,
+  String encryptedToken,
+) {
+  nullOrEmptyArgCheck(encryptedToken, "encryptedToken");
+  nullOrEmptyArgCheck(password, "userPassword");
+  if (keyAttr == null) {
+    throw ArgumentError("key Attributes can not be null");
+  }
+  nullOrEmptyArgCheck(keyAttr.kekSalt, "keySalt");
+  nullOrEmptyArgCheck(keyAttr.encryptedKey, "encryptedKey");
+  nullOrEmptyArgCheck(keyAttr.keyDecryptionNonce, "keyDecryptionNonce");
+  nullOrEmptyArgCheck(keyAttr.encryptedSecretKey, "encryptedSecretKey");
+  nullOrEmptyArgCheck(
+    keyAttr.secretKeyDecryptionNonce,
+    "secretKeyDecryptionNonce",
+  );
+  nullOrEmptyArgCheck(keyAttr.publicKey, "publicKey");
+  if ((keyAttr.memLimit ?? 0) <= 0 || (keyAttr.opsLimit ?? 0) <= 0) {
+    throw ArgumentError("Key mem/OpsLimit can not be null or <0");
+  }
+  // check password encoding issues
+  try {
+    Uint8List passwordL = utf8.encode(password);
+    try {
+      utf8.decode(passwordL);
+    } catch (e) {
+      _logger.severe("CRITICAL: password decode failed", e);
+      rethrow;
+    }
+  } catch (e) {
+    _logger.severe('CRITICAL: password encode failed');
+    rethrow;
+  }
+}
+
+void nullOrEmptyArgCheck(String value, String name) {
+  if (value == null || value.isEmpty) {
+    throw ArgumentError("Critical: $name is nullOrEmpty");
+  }
+}