fix: Throw a custom exception
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8d222a160f
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@ -3,6 +3,7 @@ import 'package:meta/meta.dart';
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import 'package:omemo_dart/protobuf/schema.pb.dart';
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import 'package:omemo_dart/src/double_ratchet/crypto.dart';
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import 'package:omemo_dart/src/double_ratchet/kdf.dart';
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import 'package:omemo_dart/src/errors.dart';
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import 'package:omemo_dart/src/helpers.dart';
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import 'package:omemo_dart/src/key.dart';
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import 'package:omemo_dart/src/x3dh.dart';
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@ -142,8 +143,7 @@ class OmemoDoubleRatchet {
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Future<void> skipMessageKeys(int until) async {
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if (nr + maxSkip < until) {
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// TODO(PapaTutuWawa): Custom exception
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throw Exception();
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throw SkippingTooManyMessagesException();
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}
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if (ckr != null) {
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@ -7,3 +7,9 @@ class InvalidSignatureException implements Exception {
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class InvalidMessageHMACException implements Exception {
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String errMsg() => 'The computed HMAC does not match the provided HMAC';
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}
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/// Triggered by the Double Ratchet if skipping messages would cause skipping more than
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/// MAXSKIP messages
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class SkippingTooManyMessagesException implements Exception {
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String errMsg() => 'Skipping messages would cause a skip bigger than MAXSKIP';
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}
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