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Use InvariantCulture when parsing machine-generated dates

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DateTime.TryParse without an IFormatProvider falls back to the current
thread culture, so the same string can parse differently (or fail)
depending on the server's locale. None of these call sites deal with
user-entered text - they parse dates that come from filenames, an
HTTP header, ffprobe metadata and values the app itself wrote to the
auth database - so InvariantCulture is the correct provider everywhere
here.

Fixes the S6580 / CA1305 warnings on these call sites.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
This commit is contained in:
Nils Lehnen
2026-07-04 23:55:31 +02:00
parent e2eaacd239
commit f8ffccae7f
5 changed files with 7 additions and 6 deletions
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2
Jellyfin.Api/Controllers/ImageController.cs
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@@ -2049,7 +2049,7 @@ public class ImageController : BaseJellyfinApiController
}
// Check If-Modified-Since header for time-based validation
if (DateTime.TryParse(Request.Headers[HeaderNames.IfModifiedSince], out var ifModifiedSinceHeader))
if (DateTime.TryParse(Request.Headers[HeaderNames.IfModifiedSince], CultureInfo.InvariantCulture, out var ifModifiedSinceHeader))
{
// Return 304 if the image has not been modified since the client's cached version
if (dateImageModified <= ifModifiedSinceHeader)