using System; using System.IO; using System.Runtime.InteropServices; using System.Text; namespace MediaBrowser.Controller.IO { /// /// Contains helpers to interact with shortcut files (.lnk) /// public static class Shortcut { #region Signitures were imported from http://pinvoke.net [Flags()] enum SLGP_FLAGS { /// Retrieves the standard short (8.3 format) file name SLGP_SHORTPATH = 0x1, /// Retrieves the Universal Naming Convention (UNC) path name of the file SLGP_UNCPRIORITY = 0x2, /// Retrieves the raw path name. A raw path is something that might not exist and may include environment variables that need to be expanded SLGP_RAWPATH = 0x4 } [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)] struct WIN32_FIND_DATAW { public uint dwFileAttributes; public long ftCreationTime; public long ftLastAccessTime; public long ftLastWriteTime; public uint nFileSizeHigh; public uint nFileSizeLow; public uint dwReserved0; public uint dwReserved1; [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 260)] public string cFileName; [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 14)] public string cAlternateFileName; } [Flags()] enum SLR_FLAGS { /// /// Do not display a dialog box if the link cannot be resolved. When SLR_NO_UI is set, /// the high-order word of fFlags can be set to a time-out value that specifies the /// maximum amount of time to be spent resolving the link. The function returns if the /// link cannot be resolved within the time-out duration. If the high-order word is set /// to zero, the time-out duration will be set to the default value of 3,000 milliseconds /// (3 seconds). To specify a value, set the high word of fFlags to the desired time-out /// duration, in milliseconds. /// SLR_NO_UI = 0x1, /// Obsolete and no longer used SLR_ANY_MATCH = 0x2, /// If the link object has changed, update its path and list of identifiers. /// If SLR_UPDATE is set, you do not need to call IPersistFile::IsDirty to determine /// whether or not the link object has changed. SLR_UPDATE = 0x4, /// Do not update the link information SLR_NOUPDATE = 0x8, /// Do not execute the search heuristics SLR_NOSEARCH = 0x10, /// Do not use distributed link tracking SLR_NOTRACK = 0x20, /// Disable distributed link tracking. By default, distributed link tracking tracks /// removable media across multiple devices based on the volume name. It also uses the /// Universal Naming Convention (UNC) path to track remote file systems whose drive letter /// has changed. Setting SLR_NOLINKINFO disables both types of tracking. SLR_NOLINKINFO = 0x40, /// Call the Microsoft Windows Installer SLR_INVOKE_MSI = 0x80 } /// The IShellLink interface allows Shell links to be created, modified, and resolved [ComImport(), InterfaceType(ComInterfaceType.InterfaceIsIUnknown), Guid("000214F9-0000-0000-C000-000000000046")] interface IShellLinkW { /// Retrieves the path and file name of a Shell link object void GetPath([Out(), MarshalAs(UnmanagedType.LPWStr)] StringBuilder pszFile, int cchMaxPath, out WIN32_FIND_DATAW pfd, SLGP_FLAGS fFlags); /// Retrieves the list of item identifiers for a Shell link object void GetIDList(out IntPtr ppidl); /// Sets the pointer to an item identifier list (PIDL) for a Shell link object. void SetIDList(IntPtr pidl); /// Retrieves the description string for a Shell link object void GetDescription([Out(), MarshalAs(UnmanagedType.LPWStr)] StringBuilder pszName, int cchMaxName); /// Sets the description for a Shell link object. The description can be any application-defined string void SetDescription([MarshalAs(UnmanagedType.LPWStr)] string pszName); /// Retrieves the name of the working directory for a Shell link object void GetWorkingDirectory([Out(), MarshalAs(UnmanagedType.LPWStr)] StringBuilder pszDir, int cchMaxPath); /// Sets the name of the working directory for a Shell link object void SetWorkingDirectory([MarshalAs(UnmanagedType.LPWStr)] string pszDir); /// Retrieves the command-line arguments associated with a Shell link object void GetArguments([Out(), MarshalAs(UnmanagedType.LPWStr)] StringBuilder pszArgs, int cchMaxPath); /// Sets the command-line arguments for a Shell link object void SetArguments([MarshalAs(UnmanagedType.LPWStr)] string pszArgs); /// Retrieves the hot key for a Shell link object void GetHotkey(out short pwHotkey); /// Sets a hot key for a Shell link object void SetHotkey(short wHotkey); /// Retrieves the show command for a Shell link object void GetShowCmd(out int piShowCmd); /// Sets the show command for a Shell link object. The show command sets the initial show state of the window. void SetShowCmd(int iShowCmd); /// Retrieves the location (path and index) of the icon for a Shell link object void GetIconLocation([Out(), MarshalAs(UnmanagedType.LPWStr)] StringBuilder pszIconPath, int cchIconPath, out int piIcon); /// Sets the location (path and index) of the icon for a Shell link object void SetIconLocation([MarshalAs(UnmanagedType.LPWStr)] string pszIconPath, int iIcon); /// Sets the relative path to the Shell link object void SetRelativePath([MarshalAs(UnmanagedType.LPWStr)] string pszPathRel, int dwReserved); /// Attempts to find the target of a Shell link, even if it has been moved or renamed void Resolve(IntPtr hwnd, SLR_FLAGS fFlags); /// Sets the path and file name of a Shell link object void SetPath([MarshalAs(UnmanagedType.LPWStr)] string pszFile); } [ComImport, Guid("0000010c-0000-0000-c000-000000000046"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)] public interface IPersist { [PreserveSig] void GetClassID(out Guid pClassID); } [ComImport, Guid("0000010b-0000-0000-C000-000000000046"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)] public interface IPersistFile : IPersist { new void GetClassID(out Guid pClassID); [PreserveSig] int IsDirty(); [PreserveSig] void Load([In, MarshalAs(UnmanagedType.LPWStr)] string pszFileName, uint dwMode); [PreserveSig] void Save([In, MarshalAs(UnmanagedType.LPWStr)] string pszFileName, [In, MarshalAs(UnmanagedType.Bool)] bool remember); [PreserveSig] void SaveCompleted([In, MarshalAs(UnmanagedType.LPWStr)] string pszFileName); [PreserveSig] void GetCurFile([In, MarshalAs(UnmanagedType.LPWStr)] string ppszFileName); } const uint STGM_READ = 0; const int MAX_PATH = 260; // CLSID_ShellLink from ShlGuid.h [ ComImport(), Guid("00021401-0000-0000-C000-000000000046") ] public class ShellLink { } #endregion public static string ResolveShortcut(string filename) { var link = new ShellLink(); ((IPersistFile)link).Load(filename, STGM_READ); // TODO: if I can get hold of the hwnd call resolve first. This handles moved and renamed files. // ((IShellLinkW)link).Resolve(hwnd, 0) var sb = new StringBuilder(MAX_PATH); var data = new WIN32_FIND_DATAW(); ((IShellLinkW)link).GetPath(sb, sb.Capacity, out data, 0); return sb.ToString(); } public static bool IsShortcut(string filename) { return filename != null ? Path.GetExtension(filename).EndsWith("lnk", StringComparison.OrdinalIgnoreCase) : false; } } }