105 lines
3.4 KiB
C#
105 lines
3.4 KiB
C#
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/*
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TYTD Lite: A YouTube Downloader website that archives videos when people download videos using it.
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Copyright (C) 2024 Mike Nolan
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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using System;
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using System.Globalization;
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using System.IO;
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using System.Reflection;
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using System.Runtime.InteropServices;
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using System.Security.Cryptography;
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using System.Text;
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using System.Threading.Tasks;
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using Tesses.WebServer;
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namespace TYTDLite
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{
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//thanks to https://www.meziantou.net/getting-the-date-of-build-of-a-dotnet-assembly-at-runtime.htm
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[AttributeUsage(AttributeTargets.Assembly)]
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internal class BuildDateAttribute : Attribute
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{
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public BuildDateAttribute(string value)
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{
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DateTime = DateTime.ParseExact(value, "yyyyMMddHHmmss", CultureInfo.InvariantCulture, DateTimeStyles.None);
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}
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public DateTime DateTime { get; }
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}
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public class AssetProvider : Server
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{
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internal static DateTime GetBuildDate()
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{
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var attribute = asm.GetCustomAttribute<BuildDateAttribute>();
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return attribute != null ? attribute.DateTime : default(DateTime);
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}
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static Assembly asm=typeof(AssetProvider).Assembly;
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public AssetProvider()
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{
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}
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public static Stream OpenRead(string path)
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{
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return asm.GetManifestResourceStream($"TYTDLite.Assets{path.Replace("/",".")}");
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}
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public override async Task GetAsync(ServerContext ctx)
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{
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try{
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var build = GetBuildDate();
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string nice = $"S_{Convert.ToBase64String(Encoding.UTF8.GetBytes($"{build.ToString()}-{ctx.UrlPath}"))}";
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ctx.WithDate(build).WithLastModified(build);
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ctx.ResponseHeaders.Add("ETag",nice);
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await ctx.SendBytesAsync(await ReadAllBytesAsync(ctx.UrlPath),HeyRed.Mime.MimeTypesMap.GetMimeType(ctx.UrlPath));
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}catch(ArgumentNullException ex)
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{
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_=ex;
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await NotFoundServer.ServerNull.GetAsync(ctx);
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}
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}
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public static async Task<byte[]> ReadAllBytesAsync(string path)
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{
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using(var s = OpenRead(path))
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{
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var ms = new MemoryStream();
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await s.CopyToAsync(ms);
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return ms.ToArray();
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}
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}
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public static async Task<string> ReadAllTextAsync(string path)
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{
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using(var s = OpenRead(path))
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using(var ms = new StreamReader(s))
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{
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return await ms.ReadToEndAsync();
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}
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}
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public static string ReadAllText(string path)
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{
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using(var s = OpenRead(path))
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using(var ms = new StreamReader(s))
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return ms.ReadToEnd();
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}
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}
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}
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