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| using System.Globalization;
using Microsoft.AspNetCore.Http.HttpResults;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.StaticFiles;
using PuppeteerSharp;
var builder = WebApplication.CreateSlimBuilder(args);
var app = builder.Build();
List<ImageInfo> images = [
new("4e668ad2-14bd-4d28-b8f7-6572b8b3e77b", "1.jpg", "Material"),
new("3369e70b-b2d1-41db-8d0a-d78037bb8c52", "2.jpg", "White")
];
IBrowser? browser = null;
IPage? page = null;
app.MapGet("/", async () =>
Results.Content(
await File.ReadAllTextAsync("wwwroot/index.html")
, "text/html")
);
app.MapGet("/static/{*path}",async ([FromRoute] string path) =>
{
if (path.ToLower(CultureInfo.InvariantCulture).Contains("flag"))
return Results.BadRequest();
if (!File.Exists($"wwwroot/static/{path}"))
return Results.NotFound();
var provider = new FileExtensionContentTypeProvider();
if (!provider.TryGetContentType(path, out var contentType))
{
contentType = "application/octet-stream";
}
return Results.Content(await File.ReadAllTextAsync($"wwwroot/static/{path}"),contentType);
});
app.MapGet("/upload", async () =>
Results.Content(
await File.ReadAllTextAsync("wwwroot/upload.html")
, "text/html")
);
app.MapPost("/report/{id:guid}", async (Guid id) =>
{
var image = images.FirstOrDefault(i => i.Id == id.ToString());
if (image == null)
return Results.NotFound("Image not found");
if (browser is null)
{
browser = await Puppeteer.LaunchAsync(new LaunchOptions
{
ExecutablePath = "/usr/bin/chromium",
Headless = true,
Args = [
"--no-sandbox",
"--disable-dev-shm-usage",
"--disable-gpu",
"--disable-extensions",
"--disable-software-rasterizer",
"--disable-setuid-sandbox",
"--ignore-certificate-errors",
"--media-cache-size=1",
"--disk-cache-size=1"
]
});
}
if (page is null)
{
page = await browser.NewPageAsync();
}
var flag = File.Exists("/flag") ? (await File.ReadAllTextAsync("/flag")).Trim() : "flag{no_flag}";
await page.SetCookieAsync(new CookieParam()
{
Name = "flag",
Value = flag,
Domain = "localhost",
Path = "/"
});
await page.GoToAsync($"http://localhost/#{image.Id}", 5000);
return Results.Ok("Beautiful image reported");
});
app.MapPost("/images", async ([FromForm] IFormFile file, [FromForm] string description) =>
{
if (file.Length > 0)
{
var ext = Path.GetExtension(file.FileName);
var name = Guid.NewGuid().ToString("N") + ext;
var filePath = Path.Combine("wwwroot/uploads", name);
using (var stream = new FileStream(filePath, FileMode.Create))
{
await file.CopyToAsync(stream);
}
var info = new ImageInfo(Guid.NewGuid().ToString(), name, description);
images.Add(info);
return Results.Created($"/images/{name}", info);
}
return Results.BadRequest();
}).DisableAntiforgery();
app.MapGet("/images", () => Results.Json(images));
app.MapGet("/images/{filename}", ([FromRoute] string filename) =>
{
if (filename.Contains(".."))
return Results.BadRequest();
var filePath = Path.Combine("wwwroot/uploads", filename);
if (!File.Exists(filePath))
return Results.NotFound();
var provider = new FileExtensionContentTypeProvider();
if (!provider.TryGetContentType(filename, out var contentType))
{
contentType = "application/octet-stream";
}
return Results.Bytes(File.ReadAllBytes(filePath), contentType);
});
app.MapDelete("/images/{id}", (string id) =>
{
var image = images.FirstOrDefault(i => i.Id == id);
if (image == null)
return Results.NotFound("Image Not Found");
var filePath = Path.Combine("wwwroot/uploads", image.FileName);
if (File.Exists(filePath))
File.Delete(filePath);
images.Remove(image);
return Results.Ok();
});
app.Run("http://*:8081");
record ImageInfo(string Id, string FileName, string Description);
|
