mirror of
https://github.com/Kareadita/Kavita.git
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d1a14f7e68
* Recreated Kavita Logging with Serilog instead of Default. This needs to be move out of the appsettings now, to allow auto updater to patch. * Refactored the code to be completely configured via Code rather than appsettings.json. This is a required step for Auto Updating. * Added in the ability to send logs directly to the UI only for users on the log route. Stopping implementation as Alerts page will handle the rest of the implementation. * Fixed up the backup service to not rely on Config from appsettings.json * Tweaked the Logging levels available * Moved everything over to File-scoped namespaces * Moved everything over to File-scoped namespaces * Code cleanup, removed an old migration and changed so debug logging doesn't print sensitive db data * Removed dead code
61 lines
2.3 KiB
C#
61 lines
2.3 KiB
C#
using System;
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using System.Globalization;
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using System.IO;
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using System.Linq;
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using System.Security.Cryptography;
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using System.Text;
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using System.Text.Json;
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using API.Helpers;
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using Microsoft.AspNetCore.Http;
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using Microsoft.Net.Http.Headers;
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namespace API.Extensions;
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public static class HttpExtensions
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{
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public static void AddPaginationHeader(this HttpResponse response, int currentPage,
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int itemsPerPage, int totalItems, int totalPages)
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{
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var paginationHeader = new PaginationHeader(currentPage, itemsPerPage, totalItems, totalPages);
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var options = new JsonSerializerOptions()
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{
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PropertyNamingPolicy = JsonNamingPolicy.CamelCase
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};
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response.Headers.Add("Pagination", JsonSerializer.Serialize(paginationHeader, options));
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response.Headers.Add("Access-Control-Expose-Headers", "Pagination");
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}
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/// <summary>
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/// Calculates SHA256 hash for a byte[] and sets as ETag. Ensures Cache-Control: private header is added.
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/// </summary>
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/// <param name="response"></param>
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/// <param name="content">If byte[] is null or empty, will only add cache-control</param>
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public static void AddCacheHeader(this HttpResponse response, byte[] content)
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{
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if (content is not {Length: > 0}) return;
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using var sha1 = SHA256.Create();
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response.Headers.Add(HeaderNames.ETag, string.Concat(sha1.ComputeHash(content).Select(x => x.ToString("X2"))));
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response.Headers.CacheControl = $"private,max-age=100";
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}
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/// <summary>
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/// Calculates SHA256 hash for a cover image filename and sets as ETag. Ensures Cache-Control: private header is added.
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/// </summary>
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/// <param name="response"></param>
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/// <param name="filename"></param>
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/// <param name="maxAge">Maximum amount of seconds to set for Cache-Control</param>
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public static void AddCacheHeader(this HttpResponse response, string filename, int maxAge = 10)
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{
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if (filename is not {Length: > 0}) return;
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var hashContent = filename + File.GetLastWriteTimeUtc(filename);
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using var sha1 = SHA256.Create();
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response.Headers.Add("ETag", string.Concat(sha1.ComputeHash(Encoding.UTF8.GetBytes(hashContent)).Select(x => x.ToString("X2"))));
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if (maxAge != 10)
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{
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response.Headers.CacheControl = $"max-age={maxAge}";
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}
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}
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}
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