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Add mime type detection to item icon AliasVault.Client (#1477)

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Leendert de Borst
2026-01-27 17:22:12 +01:00
committed by Leendert de Borst
parent 433098d89b
commit d44319feaf
1 changed files with 32 additions and 1 deletions
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33
apps/server/AliasVault.Client/Main/Components/Items/ItemIcon.razor
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@@ -76,8 +76,39 @@ else
return string.Empty;
}
var mimeType = DetectMimeType(Logo);
var base64 = Convert.ToBase64String(Logo);
return $"data:image/png;base64,{base64}";
return $"data:{mimeType};base64,{base64}";
}
/// <summary>
/// Detect MIME type from file signature (magic numbers).
/// </summary>
private static string DetectMimeType(byte[] bytes)
{
if (bytes.Length >= 5)
{
var header = System.Text.Encoding.UTF8.GetString(bytes, 0, 5).ToLowerInvariant();
if (header.Contains("<?xml") || header.Contains("<svg"))
{
return "image/svg+xml";
}
}
if (bytes.Length >= 4)
{
if (bytes[0] == 0x00 && bytes[1] == 0x00 && bytes[2] == 0x01 && bytes[3] == 0x00)
{
return "image/x-icon";
}
if (bytes[0] == 0x89 && bytes[1] == 0x50 && bytes[2] == 0x4E && bytes[3] == 0x47)
{
return "image/png";
}
}
return "image/x-icon";
}
/// <summary>