sam/Foxnouns.NET
sam/Foxnouns.NET
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages 2 Wiki Activity Actions

fix(backend): *actually* correctly hash images

Browse source
This commit is contained in:
sam 2024-09-26 22:30:24 +02:00
parent 14e6e35cb7
commit e20a7d3465
Signed by: sam
GPG key ID: B4EF20DDE721CAA1
4 changed files with 11 additions and 12 deletions
Download patch file Download diff file Expand all files Collapse all files

10
Foxnouns.Backend/Extensions/AvatarObjectExtensions.cs
View file

@ -1,3 +1,4 @@
using System.Security.Cryptography;
using Foxnouns.Backend.Database;
using Foxnouns.Backend.Jobs;
using Foxnouns.Backend.Services;
@ -23,7 +24,7 @@ public static class AvatarObjectExtensions
CancellationToken ct = default) =>
await objectStorageService.RemoveObjectAsync(UserAvatarUpdateInvocable.Path(id, hash), ct);
public static async Task<Stream> ConvertBase64UriToImage(this string uri, int size, bool crop)
public static async Task<(string Hash, Stream Image)> ConvertBase64UriToImage(this string uri, int size, bool crop)
{
if (!uri.StartsWith("data:image/"))
throw new ArgumentException("Not a data URI", nameof(uri));
@ -53,6 +54,11 @@ public static class AvatarObjectExtensions
var stream = new MemoryStream(64 * 1024);
await image.SaveAsync(stream, new WebpEncoder { Quality = 95, NearLossless = false });
return stream;
stream.Seek(0, SeekOrigin.Begin);
var hash = Convert.ToHexString(await SHA256.HashDataAsync(stream)).ToLower();
stream.Seek(0, SeekOrigin.Begin);
return (hash, stream);
}
}