Force contentType from the headers to be .png, .jpeg or .jpg

src/Application/AzureBlobStorage/Constants/CommonFileNames.cs

@@ -2,7 +2,7 @@
 
 public static class CommonFileNames
 {
-    public static string ProfilePicture = "profilePicture.png";
-    public static string BannerPicture = "bannerPicture.png";
-    public static string WebsiteIcon = "websiteIcon.png";
+    public static string ProfilePicture = "profilePicture";
+    public static string BannerPicture = "bannerPicture";
+    public static string WebsiteIcon = "websiteIcon";
 }

src/Application/AzureBlobStorage/Constants/ContentTypes.cs

@@ -1,6 +0,0 @@
-namespace Hutopy.Application.AzureBlobStorage.Constants;
-
-public static class ContentTypes
-{
-    public static string ImagePng = "image/png";
-}

src/Application/Users/Commands/UploadBannerPicture.cs

@@ -1,5 +1,6 @@
 using Hutopy.Application.AzureBlobStorage.Constants;
 using Hutopy.Application.Common.Interfaces;
+using Hutopy.Application.Utils;
 using Microsoft.AspNetCore.Http;
 
 namespace Hutopy.Application.Users.Commands;
@@ -13,10 +14,12 @@ public class UploadBannerPictureCommand : IRequest<IResult>
     public string BannerPictureUrl { get; init; } = string.Empty;
 }
 
-public class UploadBannerPictureCommandHandler(IIdentityService identityService, IAzureBlobStorageService azureBlobStorageService) : IRequestHandler<UploadBannerPictureCommand, IResult>
+public class UploadBannerPictureCommandHandler(IHttpContextAccessor contextAccessor, IIdentityService identityService, IAzureBlobStorageService azureBlobStorageService) : IRequestHandler<UploadBannerPictureCommand, IResult>
 {
     public async Task<IResult> Handle(UploadBannerPictureCommand request, CancellationToken cancellationToken)
     {
+        var contentType = contextAccessor.EnsureContentType();
+        
         // If an url to the picture is provided, use it right away and don't upload anything.
         if (!string.IsNullOrEmpty(request.BannerPictureUrl))
         {
@@ -28,23 +31,12 @@ public class UploadBannerPictureCommandHandler(IIdentityService identityService,
         var currentUserId = new Guid(identityUser?.Id ?? "").ToString();
         
         var blobName = $"{currentUserId}/{SubDirectoryNames.Profile}/{CommonFileNames.BannerPicture}";
-
-        try
-        {
-            var url = await azureBlobStorageService.UploadFileAsync(ContainerNames.Users, blobName, request.BannerPicture, ContentTypes.ImagePng);
-
-            await identityService.UpdateCurrentUserBannerPictureUrlAsync(url);
         
-            return Results.Ok(url);
-        }
-        catch (InvalidOperationException ex)
-        {
-            return Results.BadRequest(ex.Message);
-        }
-        catch (Exception)
-        {
-            return Results.StatusCode(StatusCodes.Status500InternalServerError);
-        }
+        var url = await azureBlobStorageService.UploadFileAsync(ContainerNames.Users, blobName, request.BannerPicture, contentType);
+
+        await identityService.UpdateCurrentUserBannerPictureUrlAsync(url);
+    
+        return Results.Ok(url);
     }
 }
 

src/Application/Users/Commands/UploadProfilePicture.cs

@@ -1,5 +1,6 @@
 using Hutopy.Application.AzureBlobStorage.Constants;
 using Hutopy.Application.Common.Interfaces;
+using Hutopy.Application.Utils;
 using Microsoft.AspNetCore.Http;
 
 namespace Hutopy.Application.Users.Commands;
@@ -13,10 +14,12 @@ public class UploadProfilePictureCommand : IRequest<IResult>
     public string ProfilePictureUrl { get; init; } = string.Empty;
 }
 
-public class UploadProfilePictureCommandHandler(IIdentityService identityService, IAzureBlobStorageService azureBlobStorageService) : IRequestHandler<UploadProfilePictureCommand, IResult>
+public class UploadProfilePictureCommandHandler(IHttpContextAccessor contextAccessor, IIdentityService identityService, IAzureBlobStorageService azureBlobStorageService) : IRequestHandler<UploadProfilePictureCommand, IResult>
 {
     public async Task<IResult> Handle(UploadProfilePictureCommand request, CancellationToken cancellationToken)
     {
+        var contentType = contextAccessor.EnsureContentType();
+
         // If an url to the picture is provided, use it right away and don't upload anything.
         if (!string.IsNullOrEmpty(request.ProfilePictureUrl))
         {
@@ -29,7 +32,7 @@ public class UploadProfilePictureCommandHandler(IIdentityService identityService
         
         var blobName = $"{currentUserId}/{SubDirectoryNames.Profile}/{CommonFileNames.ProfilePicture}";
         
-        var url = await azureBlobStorageService.UploadFileAsync(ContainerNames.Users, blobName, request.ProfilePicture, ContentTypes.ImagePng);
+        var url = await azureBlobStorageService.UploadFileAsync(ContainerNames.Users, blobName, request.ProfilePicture, contentType);
 
         await identityService.UpdateCurrentUserProfilePictureUrlAsync(url);
         

src/Application/Users/Commands/UploadWebsiteIcon.cs

@@ -1,5 +1,6 @@
 using Hutopy.Application.AzureBlobStorage.Constants;
 using Hutopy.Application.Common.Interfaces;
+using Hutopy.Application.Utils;
 using Microsoft.AspNetCore.Http;
 
 namespace Hutopy.Application.Users.Commands;
@@ -14,10 +15,12 @@ public class UploadWebsiteIconCommand : IRequest<IResult>
     public string WebsitePictureUrl { get; init; } = string.Empty;
 }
 
-public class UploadWebsiteIconCommandHandler(IIdentityService identityService, IAzureBlobStorageService azureBlobStorageService) : IRequestHandler<UploadWebsiteIconCommand, IResult>
+public class UploadWebsiteIconCommandHandler(IHttpContextAccessor contextAccessor, IIdentityService identityService, IAzureBlobStorageService azureBlobStorageService) : IRequestHandler<UploadWebsiteIconCommand, IResult>
 {
     public async Task<IResult> Handle(UploadWebsiteIconCommand request, CancellationToken cancellationToken)
     {
+        var contentType = contextAccessor.EnsureContentType();
+
         // If an url to the picture is provided, use it right away and don't upload anything.
         if (!string.IsNullOrEmpty(request.WebsitePictureUrl))
         {
@@ -30,7 +33,7 @@ public class UploadWebsiteIconCommandHandler(IIdentityService identityService, I
         
         var blobName = $"{currentUserId}/{SubDirectoryNames.Profile}/{CommonFileNames.WebsiteIcon}";
         
-        var url = await azureBlobStorageService.UploadFileAsync(ContainerNames.Users, blobName, request.WebsiteIcon, ContentTypes.ImagePng);
+        var url = await azureBlobStorageService.UploadFileAsync(ContainerNames.Users, blobName, request.WebsiteIcon, contentType);
 
         await identityService.UpdateCurrentUserWebsiteIconUrlAsync(url);
         

src/Application/Utils/HttpContextAccessorExtensions.cs

@@ -0,0 +1,29 @@
+using Microsoft.AspNetCore.Http;
+
+namespace Hutopy.Application.Utils;
+
+public static class HttpContextAccessorExtensions
+{
+    public static HttpContext EnsureHttpContext(this IHttpContextAccessor httpContextAccessor)
+    {
+        if (httpContextAccessor.HttpContext == null)
+        {
+            throw new InvalidOperationException("HttpContext is null.");
+        }
+
+        return httpContextAccessor.HttpContext;
+    }
+    
+    public static string EnsureContentType(this IHttpContextAccessor httpContextAccessor)
+    {
+        var httpContext = EnsureHttpContext(httpContextAccessor);
+        var contentType = httpContext.Request.ContentType;
+        
+        if (string.IsNullOrEmpty(contentType))
+        {
+            throw new InvalidOperationException("Content-Type header is missing.");
+        }
+
+        return contentType;
+    }
+}

src/Infrastructure/AzureBlob/AzureBlobStorageService.cs

@@ -1,6 +1,3 @@
-using System;
-using System.IO;
-using System.Threading.Tasks;
 using Azure;
 using Azure.Storage.Blobs;
 using Azure.Storage.Blobs.Models;
@@ -16,7 +13,6 @@ public class AzureBlobStorageService : IAzureBlobStorageService
     private readonly ILogger<AzureBlobStorageService> _logger;
     private readonly long _maxUploadSize = 10 * 1024 * 1024;  // 10 MB in bytes
 
-
     public AzureBlobStorageService(IConfiguration configuration, ILogger<AzureBlobStorageService> logger)
     {
         _logger = logger;
@@ -47,6 +43,13 @@ public class AzureBlobStorageService : IAzureBlobStorageService
             throw new InvalidOperationException($"Blob storage: File size exceeds the maximum allowed size of {_maxUploadSize} bytes.");
         }
         
+        // Validate content type
+        if (!ContentTypes.IsAllowed(contentType))
+        {
+            _logger.LogInformation($"Blob storage: Unsupported file type {contentType}. Only PNG and JPEG are allowed.");
+            throw new InvalidOperationException("Unsupported file type. Only PNG and JPEG are allowed.");
+        }
+        
         try
         {
             // Get a reference to a container

src/Infrastructure/AzureBlob/ContentTypes.cs

@@ -0,0 +1,15 @@
+namespace Hutopy.Infrastructure.AzureBlob;
+
+public static class ContentTypes
+{
+    private static string ImagePng = "image/png";
+    private static string ImageJpeg = "image/jpeg";
+    private static string ImageJpg = "image/jpg";
+    
+    public static HashSet<string> AllowedContentTypes = new HashSet<string> { ImagePng, ImageJpeg, ImageJpg };
+
+    public static bool IsAllowed(string contentType)
+    {
+        return AllowedContentTypes.Contains(contentType);
+    }
+}