WebFile/Default.aspx.cs at master · adrievx/WebFile · GitHub

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using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using WebFile.Models;
using WebFile.Utils;

namespace WebFile {
    public partial class Default : System.Web.UI.Page {
        protected void Page_Load(object sender, EventArgs e) {
            string root = ConfigSystem.DirectoryRoot;

            string path = Request.QueryString["path"];

            if (string.IsNullOrEmpty(path)) {
                Response.Redirect("/?path=%2F");
                return;
            }

            string readDirectory = Path.Combine(root, path.TrimStart('/'));

            if(readDirectory == "/") {
                readDirectory = root;
            }

            if (!readDirectory.Contains(root)) {
                // prevent directory traversal attacks
                Response.Redirect("/ErrorPages/403.aspx");
                return;
            }

            this.Title = $"Browsing {path}";

            var assets = new List<Asset>();

            foreach (var item in Directory.EnumerateDirectories(readDirectory, "*", SearchOption.TopDirectoryOnly)) {
                var di = new DirectoryInfo(item);

                string newReadDir = Path.Combine(readDirectory, di.Name).Replace(root, "").Replace("\\", "/");

                var asset = new Asset {
                    FileName = di.Name,
                    FilePath = "/?path=" + HttpUtility.UrlEncode(newReadDir),
                    FileType = "Folder",
                    FileExtension = "folder"
                };

                assets.Add(asset);
            }

            foreach (var item in Directory.EnumerateFiles(readDirectory, "*.*", SearchOption.TopDirectoryOnly).OrderByDescending(f => new FileInfo(f).LastWriteTime)) {
                var fi = new FileInfo(item);

                string newReadDir = Path.Combine(readDirectory, fi.Name).Replace(root, "").Replace("\\", "/");

                var asset = new Asset {
                    FileName = fi.Name,
                    FilePath = "/FileViewer.ashx?path=" + HttpUtility.UrlEncode(newReadDir),
                    FileType = TextUtils.HumanizeFileSize(fi.Length),
                    FileExtension = fi.Extension.TrimStart('.')
                };

                if(!ExtensionIgnore.IsIgnored(fi.Extension)) {
                    assets.Add(asset);
                }
            }

            rptAssets.DataSource = assets;
            rptAssets.DataBind();

            var breadcrumbItems = GenerateBreadcrumb(path);

            rptBreadcrumb.DataSource = breadcrumbItems;
            rptBreadcrumb.DataBind();
        }

        private List<BreadcrumbItem> GenerateBreadcrumb(string path) {
            List<BreadcrumbItem> breadcrumbItems = new List<BreadcrumbItem>();
            string[] parts = path.Trim('/').Split('/');
            string currentPath = "";

            breadcrumbItems.Add(new BreadcrumbItem { Name = "CONTENT", Url = "/?path=%2F" });

            foreach (string part in parts) {
                currentPath += "/" + part;
                breadcrumbItems.Add(new BreadcrumbItem { Name = part, Url = $"/?path={HttpUtility.UrlEncode(currentPath)}" });
            }

            return breadcrumbItems;
        }

        protected string GetIconMarkup(object dataItem) {
            Asset asset = (Asset)dataItem;
            string iconHtml;

            switch (asset.FileExtension.ToLower()) {
                case "jpg":
                case "png":
                case "gif":
                    iconHtml = $"<img src='{asset.FilePath.TrimStart('/')}' alt='{asset.FileName}'>";
                    break;
                case "folder":
                    iconHtml = "<div class='folder-icon'><i class='fas fa-folder'></i></div>";
                    break;
                case "pdf":
                    iconHtml = "<div class='folder-icon'><i class='fas fa-file-pdf' style='color: #ff4444;'></i></div>";
                    break;
                case "docx":
                    iconHtml = "<div class='folder-icon'><i class='fas fa-file-word' style='color: #4285f4;'></i></div>";
                    break;
                case "zip":
                    iconHtml = "<div class='folder-icon'><i class='fas fa-file-archive' style='color: #ffd700;'></i></div>";
                    break;
                case "py":
                    iconHtml = "<div class='folder-icon'><i class='fas fa-file-code' style='color: #6e5ed6;'></i></div>";
                    break;
                default:
                    iconHtml = "<div class='folder-icon'><i class='fas fa-file'></i></div>";
                    break;
            }

            return iconHtml;
        }
    }
}