53 lines
1.7 KiB
C#
53 lines
1.7 KiB
C#
using System.Security.Cryptography;
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using DTLib.Extensions;
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using Млаумчерб.Клиент.классы;
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using static Млаумчерб.Клиент.сеть.Сеть;
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namespace Млаумчерб.Клиент.сеть.NetworkTaskFactories;
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public class VersionFileDownloadTaskFactory : INetworkTaskFactory
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{
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private VersionDescriptor _descriptor;
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private IOPath _filePath;
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private SHA1 _hasher;
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public VersionFileDownloadTaskFactory(VersionDescriptor descriptor)
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{
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_descriptor = descriptor;
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_filePath = Пути.GetVersionJarFilePath(_descriptor.id);
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_hasher = SHA1.Create();
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}
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public Task<NetworkTask?> CreateAsync(bool checkHashes)
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{
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NetworkTask? networkTask = null;
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if (!CheckFiles(checkHashes))
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networkTask = new NetworkTask(
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$"version file '{_descriptor.id}'",
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GetTotalSize(),
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Download
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);
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return Task.FromResult(networkTask);
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}
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private bool CheckFiles(bool checkHashes)
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{
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if (!File.Exists(_filePath))
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return false;
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if (!checkHashes)
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return true;
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using var fs = File.OpenRead(_filePath);
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string hash = _hasher.ComputeHash(fs).HashToString();
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return hash == _descriptor.downloads.client.sha1;
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}
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private long GetTotalSize()
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{
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return _descriptor.downloads.client.size;
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}
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private Task Download(NetworkProgressReporter pr, CancellationToken ct)
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{
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return DownloadFileHTTP(_descriptor.downloads.client.url, _filePath, ct, pr.AddBytesCount);
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}
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} |