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The minimal file server written by ChatGPT
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| using Microsoft.AspNetCore.Builder; | |
| using Microsoft.AspNetCore.Http; | |
| using Microsoft.AspNetCore.Hosting; | |
| using Microsoft.AspNetCore.StaticFiles; | |
| using Microsoft.Extensions.Hosting; | |
| using System; | |
| using System.IO; | |
| using System.Linq; | |
| using System.Text.Encodings.Web; | |
| using System.Threading.Tasks; | |
| if (args.Length == 0 || !Directory.Exists(args[0])) | |
| { | |
| Console.WriteLine("Usage: dotnet run <root-path>"); | |
| return; | |
| } | |
| string rootPath = Path.GetFullPath(args[0]); | |
| var contentTypeProvider = new FileExtensionContentTypeProvider(); | |
| var builder = WebApplication.CreateBuilder(); | |
| var app = builder.Build(); | |
| app.MapGet("/{**path}", (HttpContext context, string? path) => | |
| { | |
| string requestedPath = path ?? ""; | |
| string fullPath = Path.Combine(rootPath, requestedPath); | |
| if (!fullPath.StartsWith(rootPath)) // Prevent directory traversal | |
| { | |
| return Results.Forbid(); | |
| } | |
| if (Directory.Exists(fullPath)) | |
| { | |
| var entries = Directory.EnumerateFileSystemEntries(fullPath) | |
| .Select(entry => | |
| { | |
| string name = Path.GetFileName(entry); | |
| string encodedName = HtmlEncoder.Default.Encode(name); | |
| string relativePath = Path.Combine(requestedPath, name).Replace("\\", "/"); | |
| return $"<li><a href='/{relativePath}'>{encodedName}{(Directory.Exists(entry) ? "/" : "")}</a></li>"; | |
| }); | |
| string responseHtml = $""" | |
| <html> | |
| <body> | |
| <h1>Index of /{HtmlEncoder.Default.Encode(requestedPath)}</h1> | |
| <ul> | |
| {string.Join("", entries)} | |
| </ul> | |
| </body> | |
| </html> | |
| """; | |
| return Results.Content(responseHtml, "text/html"); | |
| } | |
| else if (File.Exists(fullPath)) | |
| { | |
| string contentType = contentTypeProvider.TryGetContentType(fullPath, out var mimeType) ? mimeType! : "application/octet-stream"; | |
| return Results.File(fullPath, contentType, Path.GetFileName(fullPath)); | |
| } | |
| else | |
| { | |
| return Results.NotFound("Not Found"); | |
| } | |
| }); | |
| await app.RunAsync(); |
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