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dff3fa7e46
Adds a step to the updater to verify that the new .flx package is signed and untampered. Each .flx contains a signed manifest file. The manifest contains a SHA-256 hash of the .flx contents. See bundle.dart for a description of the new .flx format.
33 lines
1.1 KiB
Dart
33 lines
1.1 KiB
Dart
// Copyright 2015 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'dart:math';
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// This class represents a dot-separated version string. Used for comparing
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// versions.
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// Usage: assert(new Version('1.1.0') < new Version('1.2.1'));
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class Version {
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Version(String versionStr) :
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_parts = versionStr.split('.').map((String val) => int.parse(val)).toList();
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List<int> _parts;
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bool operator<(Version other) => _compare(other) < 0;
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bool operator==(dynamic other) => other is Version && _compare(other) == 0;
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bool operator>(Version other) => _compare(other) > 0;
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int _compare(Version other) {
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int length = min(_parts.length, other._parts.length);
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for (int i = 0; i < length; ++i) {
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if (_parts[i] < other._parts[i])
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return -1;
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if (_parts[i] > other._parts[i])
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return 1;
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}
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return _parts.length - other._parts.length; // results in 1.0 < 1.0.0
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}
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int get hashCode => _parts.fold(373, (int acc, int part) => 37*acc + part);
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}
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