1271 lines
30 KiB
C#
1271 lines
30 KiB
C#
using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Security;
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using System.Security.Principal;
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using System.Text;
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using System.Web;
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using System.Web.UI;
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namespace FileSharePortal
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{
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public partial class Default : Page
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{
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private const string ShareRoot =
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@"\\LAN-DC1\Fileshare";
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private static readonly Dictionary<string, string> RootFolders =
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new Dictionary<string, string>(
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StringComparer.OrdinalIgnoreCase)
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{
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{
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"Free Trial Documents",
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"Dokumente rund um Free Trials"
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},
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{
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"Sales Ordner",
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"Dokumente für den Vertrieb"
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},
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{
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"Technical User Folder",
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"Technische Dokumente und Unterlagen"
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}
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};
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public string CurrentUser
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{
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get;
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private set;
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}
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public string CurrentPath
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{
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get;
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private set;
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}
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public string BreadcrumbHtml
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{
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get;
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private set;
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}
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public string ContentHtml
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{
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get;
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private set;
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}
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protected void Page_Load(
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object sender,
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EventArgs e)
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{
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Response.Cache.SetCacheability(
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HttpCacheability.NoCache);
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Response.Cache.SetNoStore();
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CurrentUser =
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WindowsIdentity.GetCurrent().Name;
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string relativePath =
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Request.QueryString["path"] ?? "";
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try
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{
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string physicalPath =
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GetSafePhysicalPath(
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relativePath);
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CurrentPath =
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relativePath;
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BreadcrumbHtml =
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BuildBreadcrumb(
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relativePath);
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if (
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string.IsNullOrEmpty(
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relativePath))
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{
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ContentHtml =
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BuildRootFolderList();
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}
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else
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{
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ContentHtml =
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BuildDirectoryContents(
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physicalPath,
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relativePath);
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}
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}
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catch (UnauthorizedAccessException)
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{
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ContentHtml =
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BuildError(
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"Zugriff verweigert",
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"Sie haben keine Berechtigung auf diesen Bereich zuzugreifen.");
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}
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catch (DirectoryNotFoundException)
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{
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ContentHtml =
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BuildError(
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"Ordner nicht gefunden",
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"Der angeforderte Ordner existiert nicht.");
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}
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catch (SecurityException)
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{
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ContentHtml =
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BuildError(
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"Ungültiger Pfad",
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"Der angeforderte Pfad ist nicht zulässig.");
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}
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catch
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{
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ContentHtml =
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BuildError(
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"Fehler",
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"Der angeforderte Bereich konnte nicht geladen werden.");
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}
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}
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/*
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* ========================================================
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* ORDNER-ICON
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* ========================================================
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*/
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private string FolderIconSvg()
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{
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return @"
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<svg
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viewBox=""0 0 24 24""
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xmlns=""http://www.w3.org/2000/svg""
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aria-hidden=""true"">
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<path
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d=""M3 6.5C3 5.67 3.67 5 4.5 5H9L11 7H19.5C20.33 7 21 7.67 21 8.5V18.5C21 19.33 20.33 20 19.5 20H4.5C3.67 20 3 19.33 3 18.5V6.5Z""
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fill=""none""
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stroke=""currentColor""
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stroke-width=""1.8""
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stroke-linejoin=""round"" />
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</svg>";
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}
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/*
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* ========================================================
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* DATEI-ICON
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* ========================================================
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*/
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private string FileIconSvg(
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string extension)
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{
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string label =
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"FILE";
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string fill =
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"#6b7280";
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switch (extension)
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{
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case ".pdf":
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label = "PDF";
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fill = "#dc2626";
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break;
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case ".doc":
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case ".docx":
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label = "WORD";
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fill = "#2563eb";
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break;
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case ".xls":
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case ".xlsx":
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case ".xlsm":
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label = "XLS";
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fill = "#16a34a";
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break;
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case ".ppt":
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case ".pptx":
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label = "PPT";
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fill = "#ea580c";
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break;
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case ".zip":
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case ".7z":
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case ".rar":
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case ".tar":
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case ".gz":
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label = "ZIP";
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fill = "#7c3aed";
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break;
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case ".jpg":
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case ".jpeg":
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case ".png":
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case ".gif":
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case ".webp":
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case ".bmp":
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label = "IMG";
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fill = "#0891b2";
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break;
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case ".mp3":
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case ".wav":
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case ".ogg":
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label = "AUDIO";
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fill = "#c026d3";
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break;
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case ".mp4":
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case ".webm":
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case ".ogv":
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label = "VIDEO";
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fill = "#9333ea";
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break;
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case ".txt":
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case ".log":
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case ".csv":
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case ".json":
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case ".xml":
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label = "TXT";
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fill = "#64748b";
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break;
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case ".exe":
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case ".msi":
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label = "APP";
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fill = "#475569";
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break;
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default:
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label = "FILE";
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fill = "#6b7280";
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break;
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}
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return
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"<svg " +
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"viewBox=\"0 0 64 64\" " +
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"xmlns=\"http://www.w3.org/2000/svg\" " +
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"aria-hidden=\"true\">" +
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"<path " +
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"d=\"M14 6H38L50 18V56H14Z\" " +
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"fill=\"#ffffff\" " +
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"stroke=\"" + fill + "\" " +
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"stroke-width=\"3\" " +
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"stroke-linejoin=\"round\" />" +
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"<path " +
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"d=\"M38 6V18H50\" " +
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"fill=\"none\" " +
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"stroke=\"" + fill + "\" " +
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"stroke-width=\"3\" " +
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"stroke-linejoin=\"round\" />" +
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"<rect " +
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"x=\"10\" " +
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"y=\"38\" " +
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"width=\"44\" " +
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"height=\"15\" " +
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"rx=\"4\" " +
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"fill=\"" + fill + "\" />" +
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"<text " +
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"x=\"32\" " +
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"y=\"49\" " +
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"text-anchor=\"middle\" " +
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"font-family=\"Arial, sans-serif\" " +
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"font-size=\"8\" " +
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"font-weight=\"700\" " +
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"fill=\"#ffffff\">" +
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HttpUtility.HtmlEncode(label) +
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"</text>" +
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"</svg>";
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}
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/*
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* ========================================================
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* STARTSEITE
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* ========================================================
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*/
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private string BuildRootFolderList()
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{
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var html =
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new StringBuilder();
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html.Append(
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"<div class=\"folder-grid\">"
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);
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int visibleFolders = 0;
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foreach (
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KeyValuePair<string, string> folder
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in RootFolders)
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{
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string folderName =
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folder.Key;
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string path =
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Path.Combine(
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ShareRoot,
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folderName);
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if (!Directory.Exists(path))
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continue;
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if (!CanBrowseDirectory(path))
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continue;
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visibleFolders++;
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string encodedPath =
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HttpUtility.UrlEncode(
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folderName);
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html.Append(
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"<a class=\"folder-card\" href=\"?path=" +
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HttpUtility.HtmlAttributeEncode(
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encodedPath) +
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"\">"
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);
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html.Append(
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"<div class=\"folder-icon\">"
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);
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html.Append(
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FolderIconSvg()
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);
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html.Append(
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"</div>"
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);
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html.Append(
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"<div class=\"folder-content\">"
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);
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html.Append(
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"<div class=\"folder-title\">" +
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HttpUtility.HtmlEncode(
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folderName) +
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"</div>"
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);
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html.Append(
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"<div class=\"folder-description\">" +
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HttpUtility.HtmlEncode(
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folder.Value) +
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"</div>"
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);
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html.Append(
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"</div>"
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);
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html.Append(
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"<div class=\"folder-arrow\">→</div>"
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);
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html.Append(
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"</a>"
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);
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}
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html.Append(
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"</div>"
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);
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if (visibleFolders == 0)
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{
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return BuildError(
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"Keine Bereiche verfügbar",
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"Für Ihr Benutzerkonto wurden keine zugänglichen Bereiche gefunden.");
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}
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return html.ToString();
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}
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/*
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* ========================================================
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* VERZEICHNISINHALT
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* ========================================================
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*/
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private string BuildDirectoryContents(
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string physicalPath,
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string relativePath)
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{
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var html =
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new StringBuilder();
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/*
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* ZURÜCK
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*/
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html.Append(
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"<div class=\"toolbar\">"
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);
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string parentPath =
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GetParentRelativePath(
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relativePath);
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if (parentPath != null)
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{
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if (
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string.IsNullOrEmpty(
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parentPath))
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{
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html.Append(
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"<a class=\"back-button\" href=\"./\">" +
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"← Startseite" +
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"</a>"
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);
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}
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else
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{
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html.Append(
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"<a class=\"back-button\" href=\"?path=" +
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HttpUtility.HtmlAttributeEncode(
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HttpUtility.UrlEncode(
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parentPath)) +
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"\">" +
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"← Zurück" +
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"</a>"
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);
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}
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}
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html.Append(
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"</div>"
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);
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var itemHtml =
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new StringBuilder();
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|
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/*
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* ====================================================
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* UNTERORDNER
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* ====================================================
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*/
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string[] directories =
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Directory.GetDirectories(
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physicalPath);
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|
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foreach (
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string directory
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in directories)
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{
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if (!CanBrowseDirectory(directory))
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continue;
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|
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string directoryName =
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Path.GetFileName(directory);
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|
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string childRelativePath =
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CombineRelativePath(
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relativePath,
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directoryName);
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|
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itemHtml.Append(
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"<a class=\"item\" href=\"?path=" +
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HttpUtility.HtmlAttributeEncode(
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HttpUtility.UrlEncode(
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childRelativePath)) +
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"\">"
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);
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|
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itemHtml.Append(
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"<div class=\"item-icon\">"
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);
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|
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itemHtml.Append(
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FolderIconSvg()
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);
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|
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itemHtml.Append(
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"</div>"
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);
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|
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itemHtml.Append(
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"<div class=\"item-name\">" +
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HttpUtility.HtmlEncode(
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directoryName) +
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"</div>"
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);
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|
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itemHtml.Append(
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"<div class=\"item-arrow\">→</div>"
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);
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|
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itemHtml.Append(
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"</a>"
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);
|
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}
|
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|
|
|
|
/*
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* ====================================================
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* DATEIEN
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* ====================================================
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*/
|
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|
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string[] files =
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Directory.GetFiles(
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physicalPath);
|
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|
|
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foreach (
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string file
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in files)
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{
|
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/*
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* Eine Datei muss tatsächlich gelesen werden
|
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* können. So erscheinen keine Dateien, auf die
|
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* der Benutzer keine Leseberechtigung hat.
|
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*/
|
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if (!CanReadFile(file))
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continue;
|
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|
|
|
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string fileName =
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Path.GetFileName(file);
|
|
|
|
|
|
string extension =
|
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Path.GetExtension(file)
|
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.ToLowerInvariant();
|
|
|
|
|
|
FileInfo info =
|
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new FileInfo(file);
|
|
|
|
|
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string fileRelativePath =
|
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CombineRelativePath(
|
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relativePath,
|
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fileName);
|
|
|
|
|
|
string viewUrl =
|
|
"View.aspx?path=" +
|
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HttpUtility.UrlEncode(
|
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fileRelativePath);
|
|
|
|
|
|
string downloadUrl =
|
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"Download.aspx?path=" +
|
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HttpUtility.UrlEncode(
|
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fileRelativePath);
|
|
|
|
|
|
/*
|
|
* Dateizeile
|
|
*/
|
|
itemHtml.Append(
|
|
"<div class=\"file-row\">"
|
|
);
|
|
|
|
|
|
/*
|
|
* Klickbarer Dateibereich
|
|
*/
|
|
itemHtml.Append(
|
|
"<a class=\"file-main\" href=\"" +
|
|
HttpUtility.HtmlAttributeEncode(
|
|
viewUrl) +
|
|
"\">"
|
|
);
|
|
|
|
|
|
itemHtml.Append(
|
|
"<div class=\"item-icon\">"
|
|
);
|
|
|
|
|
|
itemHtml.Append(
|
|
FileIconSvg(
|
|
extension)
|
|
);
|
|
|
|
|
|
itemHtml.Append(
|
|
"</div>"
|
|
);
|
|
|
|
|
|
itemHtml.Append(
|
|
"<div class=\"file-info\">"
|
|
);
|
|
|
|
|
|
itemHtml.Append(
|
|
"<div class=\"file-name\">" +
|
|
HttpUtility.HtmlEncode(
|
|
fileName) +
|
|
"</div>"
|
|
);
|
|
|
|
|
|
itemHtml.Append(
|
|
"<div class=\"file-details\">" +
|
|
HttpUtility.HtmlEncode(
|
|
GetFileTypeDescription(
|
|
extension)) +
|
|
" · " +
|
|
FormatFileSize(
|
|
info.Length) +
|
|
" · " +
|
|
info.LastWriteTime.ToString(
|
|
"dd.MM.yyyy HH:mm") +
|
|
"</div>"
|
|
);
|
|
|
|
|
|
itemHtml.Append(
|
|
"</div>"
|
|
);
|
|
|
|
|
|
itemHtml.Append(
|
|
"</a>"
|
|
);
|
|
|
|
|
|
/*
|
|
* Separater Download-Button
|
|
*/
|
|
itemHtml.Append(
|
|
"<a class=\"download\" href=\"" +
|
|
HttpUtility.HtmlAttributeEncode(
|
|
downloadUrl) +
|
|
"\">" +
|
|
"Download" +
|
|
"</a>"
|
|
);
|
|
|
|
|
|
itemHtml.Append(
|
|
"</div>"
|
|
);
|
|
}
|
|
|
|
|
|
if (itemHtml.Length == 0)
|
|
{
|
|
html.Append(
|
|
"<div class=\"empty\">" +
|
|
"Dieser Ordner enthält keine für Sie sichtbaren Dateien oder Ordner." +
|
|
"</div>"
|
|
);
|
|
|
|
return html.ToString();
|
|
}
|
|
|
|
|
|
html.Append(
|
|
"<div class=\"item-list\">"
|
|
);
|
|
|
|
|
|
html.Append(
|
|
itemHtml.ToString()
|
|
);
|
|
|
|
|
|
html.Append(
|
|
"</div>"
|
|
);
|
|
|
|
|
|
return html.ToString();
|
|
}
|
|
|
|
|
|
/*
|
|
* ========================================================
|
|
* DATEILESEBERECHTIGUNG
|
|
* ========================================================
|
|
*/
|
|
|
|
private bool CanReadFile(
|
|
string path)
|
|
{
|
|
try
|
|
{
|
|
using (
|
|
FileStream stream =
|
|
new FileStream(
|
|
path,
|
|
FileMode.Open,
|
|
FileAccess.Read,
|
|
FileShare.ReadWrite |
|
|
FileShare.Delete))
|
|
{
|
|
}
|
|
|
|
|
|
return true;
|
|
}
|
|
catch
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* ========================================================
|
|
* DATEITYP BESCHREIBUNG
|
|
* ========================================================
|
|
*/
|
|
|
|
private string GetFileTypeDescription(
|
|
string extension)
|
|
{
|
|
switch (extension)
|
|
{
|
|
case ".pdf":
|
|
return "PDF-Dokument";
|
|
|
|
|
|
case ".doc":
|
|
case ".docx":
|
|
return "Word-Dokument";
|
|
|
|
|
|
case ".xls":
|
|
case ".xlsx":
|
|
case ".xlsm":
|
|
return "Excel-Tabelle";
|
|
|
|
|
|
case ".ppt":
|
|
case ".pptx":
|
|
return "PowerPoint-Präsentation";
|
|
|
|
|
|
case ".jpg":
|
|
case ".jpeg":
|
|
case ".png":
|
|
case ".gif":
|
|
case ".webp":
|
|
case ".bmp":
|
|
return "Bild";
|
|
|
|
|
|
case ".mp3":
|
|
case ".wav":
|
|
case ".ogg":
|
|
return "Audiodatei";
|
|
|
|
|
|
case ".mp4":
|
|
case ".webm":
|
|
case ".ogv":
|
|
return "Videodatei";
|
|
|
|
|
|
case ".txt":
|
|
return "Textdatei";
|
|
|
|
|
|
case ".csv":
|
|
return "CSV-Datei";
|
|
|
|
|
|
case ".json":
|
|
return "JSON-Datei";
|
|
|
|
|
|
case ".xml":
|
|
return "XML-Datei";
|
|
|
|
|
|
case ".log":
|
|
return "Logdatei";
|
|
|
|
|
|
case ".zip":
|
|
case ".7z":
|
|
case ".rar":
|
|
case ".tar":
|
|
case ".gz":
|
|
return "Archiv";
|
|
|
|
|
|
case ".exe":
|
|
return "Anwendung";
|
|
|
|
|
|
case ".msi":
|
|
return "Installationspaket";
|
|
|
|
|
|
default:
|
|
|
|
if (
|
|
string.IsNullOrEmpty(
|
|
extension))
|
|
{
|
|
return "Datei";
|
|
}
|
|
|
|
|
|
return
|
|
extension
|
|
.TrimStart('.')
|
|
.ToUpperInvariant();
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* ========================================================
|
|
* BREADCRUMB
|
|
* ========================================================
|
|
*/
|
|
|
|
private string BuildBreadcrumb(
|
|
string relativePath)
|
|
{
|
|
var html =
|
|
new StringBuilder();
|
|
|
|
|
|
html.Append(
|
|
"<div class=\"breadcrumb\">"
|
|
);
|
|
|
|
|
|
html.Append(
|
|
"<a href=\"./\">FileShare</a>"
|
|
);
|
|
|
|
|
|
if (
|
|
!string.IsNullOrEmpty(
|
|
relativePath))
|
|
{
|
|
string[] parts =
|
|
relativePath.Split(
|
|
new[] { '\\' },
|
|
StringSplitOptions.RemoveEmptyEntries);
|
|
|
|
|
|
string accumulated =
|
|
"";
|
|
|
|
|
|
for (
|
|
int i = 0;
|
|
i < parts.Length;
|
|
i++)
|
|
{
|
|
accumulated =
|
|
CombineRelativePath(
|
|
accumulated,
|
|
parts[i]);
|
|
|
|
|
|
html.Append(
|
|
"<span>/</span>"
|
|
);
|
|
|
|
|
|
if (
|
|
i ==
|
|
parts.Length - 1)
|
|
{
|
|
html.Append(
|
|
"<strong>" +
|
|
HttpUtility.HtmlEncode(
|
|
parts[i]) +
|
|
"</strong>"
|
|
);
|
|
}
|
|
else
|
|
{
|
|
html.Append(
|
|
"<a href=\"?path=" +
|
|
HttpUtility.HtmlAttributeEncode(
|
|
HttpUtility.UrlEncode(
|
|
accumulated)) +
|
|
"\">" +
|
|
HttpUtility.HtmlEncode(
|
|
parts[i]) +
|
|
"</a>"
|
|
);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
html.Append(
|
|
"</div>"
|
|
);
|
|
|
|
|
|
return html.ToString();
|
|
}
|
|
|
|
|
|
/*
|
|
* ========================================================
|
|
* BERECHTIGUNG ORDNERVERZEICHNIS
|
|
* ========================================================
|
|
*/
|
|
|
|
private bool CanBrowseDirectory(
|
|
string path)
|
|
{
|
|
try
|
|
{
|
|
using (
|
|
var enumerator =
|
|
Directory
|
|
.EnumerateFileSystemEntries(
|
|
path)
|
|
.GetEnumerator())
|
|
{
|
|
enumerator.MoveNext();
|
|
}
|
|
|
|
|
|
return true;
|
|
}
|
|
catch
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* ========================================================
|
|
* SICHEREN ORDNERPFAD ERMITTELN
|
|
* ========================================================
|
|
*/
|
|
|
|
private string GetSafePhysicalPath(
|
|
string relativePath)
|
|
{
|
|
if (
|
|
string.IsNullOrWhiteSpace(
|
|
relativePath))
|
|
{
|
|
return ShareRoot;
|
|
}
|
|
|
|
|
|
string decoded =
|
|
HttpUtility.UrlDecode(
|
|
relativePath);
|
|
|
|
|
|
decoded =
|
|
decoded.Replace(
|
|
'/',
|
|
'\\');
|
|
|
|
|
|
if (
|
|
decoded.StartsWith("\\") ||
|
|
decoded.Contains(":"))
|
|
{
|
|
throw new SecurityException();
|
|
}
|
|
|
|
|
|
string[] parts =
|
|
decoded.Split(
|
|
new[] { '\\' },
|
|
StringSplitOptions.RemoveEmptyEntries);
|
|
|
|
|
|
foreach (
|
|
string part
|
|
in parts)
|
|
{
|
|
if (
|
|
part == "." ||
|
|
part == "..")
|
|
{
|
|
throw new SecurityException();
|
|
}
|
|
}
|
|
|
|
|
|
string fullPath =
|
|
Path.GetFullPath(
|
|
Path.Combine(
|
|
ShareRoot,
|
|
decoded));
|
|
|
|
|
|
string normalizedRoot =
|
|
Path.GetFullPath(
|
|
ShareRoot)
|
|
.TrimEnd('\\') +
|
|
"\\";
|
|
|
|
|
|
if (
|
|
!fullPath.StartsWith(
|
|
normalizedRoot,
|
|
StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
throw new SecurityException();
|
|
}
|
|
|
|
|
|
if (
|
|
!Directory.Exists(
|
|
fullPath))
|
|
{
|
|
throw new DirectoryNotFoundException();
|
|
}
|
|
|
|
|
|
if (!CanBrowseDirectory(fullPath))
|
|
{
|
|
throw new UnauthorizedAccessException();
|
|
}
|
|
|
|
|
|
return fullPath;
|
|
}
|
|
|
|
|
|
/*
|
|
* ========================================================
|
|
* PARENT
|
|
* ========================================================
|
|
*/
|
|
|
|
private string GetParentRelativePath(
|
|
string path)
|
|
{
|
|
if (
|
|
string.IsNullOrEmpty(
|
|
path))
|
|
{
|
|
return null;
|
|
}
|
|
|
|
|
|
int position =
|
|
path.LastIndexOf('\\');
|
|
|
|
|
|
if (position < 0)
|
|
{
|
|
return "";
|
|
}
|
|
|
|
|
|
return path.Substring(
|
|
0,
|
|
position);
|
|
}
|
|
|
|
|
|
/*
|
|
* ========================================================
|
|
* RELATIVEN PFAD ZUSAMMENBAUEN
|
|
* ========================================================
|
|
*/
|
|
|
|
private string CombineRelativePath(
|
|
string parent,
|
|
string child)
|
|
{
|
|
if (
|
|
string.IsNullOrEmpty(
|
|
parent))
|
|
{
|
|
return child;
|
|
}
|
|
|
|
|
|
return
|
|
parent.TrimEnd('\\') +
|
|
"\\" +
|
|
child;
|
|
}
|
|
|
|
|
|
/*
|
|
* ========================================================
|
|
* DATEIGRÖSSE
|
|
* ========================================================
|
|
*/
|
|
|
|
private string FormatFileSize(
|
|
long bytes)
|
|
{
|
|
if (bytes < 1024)
|
|
{
|
|
return bytes + " B";
|
|
}
|
|
|
|
|
|
if (bytes < 1024 * 1024)
|
|
{
|
|
return
|
|
(bytes / 1024.0)
|
|
.ToString("0.0") +
|
|
" KB";
|
|
}
|
|
|
|
|
|
if (
|
|
bytes <
|
|
1024L * 1024L * 1024L)
|
|
{
|
|
return
|
|
(bytes /
|
|
1024.0 /
|
|
1024.0)
|
|
.ToString("0.0") +
|
|
" MB";
|
|
}
|
|
|
|
|
|
return
|
|
(bytes /
|
|
1024.0 /
|
|
1024.0 /
|
|
1024.0)
|
|
.ToString("0.0") +
|
|
" GB";
|
|
}
|
|
|
|
|
|
/*
|
|
* ========================================================
|
|
* FEHLER
|
|
* ========================================================
|
|
*/
|
|
|
|
private string BuildError(
|
|
string title,
|
|
string message)
|
|
{
|
|
return
|
|
"<div class=\"error\">" +
|
|
|
|
"<h3>" +
|
|
HttpUtility.HtmlEncode(
|
|
title) +
|
|
"</h3>" +
|
|
|
|
"<p>" +
|
|
HttpUtility.HtmlEncode(
|
|
message) +
|
|
"</p>" +
|
|
|
|
"</div>";
|
|
}
|
|
}
|
|
} |