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How to check the local OneDrive folder in sync?

I need to check if the local OneDrive / folder is synchronized to this day.

Can I verify this by looking at any properties of the file / folder (in C # code) without using any One Drive APIs?

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2 answers

I was stuck with this and tried to check the main folder icon.

EDITING

The bottom line is to extract the synchronized folder icon and get the CLSID of the overlay.

First you need a class to retrieve the necessary information:

using System;
using System.Collections.Generic;
using System.Drawing;
using System.IO;
using System.Runtime.InteropServices;
using Microsoft.Win32;


namespace MyApp.Classes
{
    public class ExtractIconInfo
    {
        [Flags]
        private enum SHGFI : uint
        {
            SHGFI_ICON = 0x000000100,
            SHGFI_DISPLAYNAME = 0x000000200,
            SHGFI_TYPENAME = 0x000000400,
            SHGFI_ATTRIBUTES = 0x000000800,
            SHGFI_ICONLOCATION = 0x000001000,
            SHGFI_EXETYPE = 0x000002000,
            SHGFI_SYSICONINDEX = 0x000004000,
            SHGFI_LINKOVERLAY = 0x000008000,
            SHGFI_SELECTED = 0x000010000,
            SHGFI_ATTR_SPECIFIED = 0x000020000,
            SHGFI_LARGEICON = 0x000000000,
            SHGFI_SMALLICON = 0x000000001,
            SHGFI_OPENICON = 0x000000002,
            SHGFI_SHELLICONSIZE = 0x000000004,
            SHGFI_PIDL = 0x000000008,
            SHGFI_USEFILEATTRIBUTES = 0x000000010,
            SHGFI_ADDOVERLAYS = 0x000000020,
            SHGFI_OVERLAYINDEX = 0x000000040
        }

        [Flags]
        private enum FileAttributes : uint
        {
            Readonly = 0x00000001,
            Hidden = 0x00000002,
            System = 0x00000004,
            Directory = 0x00000010,
            Archive = 0x00000020,
            Device = 0x00000040,
            Normal = 0x00000080,
            Temporary = 0x00000100,
            SparseFile = 0x00000200,
            ReparsePoint = 0x00000400,
            Compressed = 0x00000800,
            Offline = 0x00001000,
            NotContentIndexed = 0x00002000,
            Encrypted = 0x00004000,
            Virtual = 0x00010000
        }

        [Flags]
        public enum ISIOI : uint
        {
            ISIOI_ICONFILE = 0x00000001,
            ISIOI_ICONINDEX = 0x00000002
        }

        private SortedDictionary<string, Guid> ShellIconOverlayIdentifiers;

        public string IconName { get; private set; }
        public Icon Icon { get; private set; }
        public int IconOverlayIndex { get; private set; }
        public Guid IconOverlayGuid { get; private set; }

        public ExtractIconInfo(FileInfo fi)
        {
            ExtractIcon(fi.FullName, false);
        }
        public ExtractIconInfo(DirectoryInfo di)
        {
            ExtractIcon(di.FullName, true);
        }
        public ExtractIconInfo(string path, bool isFolder)
        {
            ExtractIcon(path, isFolder);
        }

        [ComVisible(false)]
        [ComImport]
        [Guid("0C6C4200-C589-11D0-999A-00C04FD655E1")]
        [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
        private interface IShellIconOverlayIdentifier
        {
            [PreserveSig]
            int IsMemberOf([MarshalAs(UnmanagedType.LPWStr)] string path, uint attributes);
            [PreserveSig]
            int GetOverlayInfo([MarshalAs(UnmanagedType.LPWStr)] string iconFileBuffer, int iconFileBufferSize, out int iconIndex, out uint flags);
            [PreserveSig]
            int GetPriority(out int priority);
        }

        [StructLayout(LayoutKind.Sequential)]
        private struct SHFILEINFO
        {
            internal IntPtr hIcon;
            internal int iIcon;
            internal uint dwAttributes;
            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 260)]
            internal string szDisplayName;
            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 80)]
            internal string szTypeName;
        };

        [DllImport("shell32.dll")]
        private static extern IntPtr SHGetFileInfo(
            string pszPath,
            uint dwFileAttributes,
            ref SHFILEINFO psfi,
            uint cbSizeFileInfo,
            uint uFlags
        );

        [DllImport("shell32.dll")]
        private static extern int SHGetIconOverlayIndex(
            string pszIconPath,
            int iIconIndex
        );

        [DllImport("user32.dll")]
        public static extern int DestroyIcon(IntPtr hIcon);

        private void ExtractIcon(string path, bool isFolder)
        {
            SHFILEINFO shIconInfo = new SHFILEINFO();
            SHGetFileInfo(path, isFolder ? (uint)FileAttributes.Directory : (uint)FileAttributes.Normal, ref shIconInfo, (uint)Marshal.SizeOf(shIconInfo), (uint)SHGFI.SHGFI_ICON | (uint)SHGFI.SHGFI_LARGEICON | (uint)SHGFI.SHGFI_DISPLAYNAME | (uint)SHGFI.SHGFI_ADDOVERLAYS | (uint)SHGFI.SHGFI_OVERLAYINDEX);
            Icon = (Icon)Icon.FromHandle(shIconInfo.hIcon).Clone();
            IconName = shIconInfo.szDisplayName;
            IconOverlayIndex = (shIconInfo.iIcon >> 24) & 0xFF;
            GetOverlayIconGuid();

            DestroyIcon(shIconInfo.hIcon);
        }

        private void GetOverlayIconGuid()
        {
            IconOverlayGuid = Guid.Empty;
            GetRegistryShellIconOverlayIdentifiers();
            foreach (string key in ShellIconOverlayIdentifiers.Keys)
            {
                string AIconFileName = string.Empty;
                int AIconIndex = 0;
                Guid value = ShellIconOverlayIdentifiers[key];
                GetOverlayIconInfo(value, out AIconFileName, out AIconIndex);
                if (SHGetIconOverlayIndex(AIconFileName, AIconIndex) == IconOverlayIndex)
                    IconOverlayGuid = value;
            }
        }

        private void GetOverlayIconInfo(Guid CLSID, out string path, out int index)
        {
            try
            {
                path = new string(' ', 256);
                uint flags = 0;
                IShellIconOverlayIdentifier SHIOI = Activator.CreateInstance(Type.GetTypeFromCLSID(CLSID, true), true) as IShellIconOverlayIdentifier;
                SHIOI.GetOverlayInfo(path, path.Length, out index, out flags);
                Marshal.ReleaseComObject(SHIOI);

                if ((flags & (uint)ISIOI.ISIOI_ICONFILE) != 0)
                {
                    if ((flags & (uint)ISIOI.ISIOI_ICONINDEX) == 0) index = 0;
                }
                else
                {
                    path = string.Empty;
                    index = 0;
                }
                path = path.Substring(0, path.IndexOf('\0'));
            }
            catch
            {
                path = string.Empty;
                index = 0;
            }
        }

        private void GetRegistryShellIconOverlayIdentifiers()
        {
            ShellIconOverlayIdentifiers = new SortedDictionary<string, Guid>();

            using (RegistryKey key32 = RegistryKey.OpenRemoteBaseKey(RegistryHive.LocalMachine, Environment.MachineName, RegistryView.Registry32).OpenSubKey(@"SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\ShellIconOverlayIdentifiers"))
                foreach (string subKey in key32.GetSubKeyNames())
                {
                    Guid value = Guid.Parse((string)key32.OpenSubKey(subKey).GetValue(null));
                    if (!ShellIconOverlayIdentifiers.ContainsKey(subKey))
                        ShellIconOverlayIdentifiers.Add(subKey, value);
                }

            using (RegistryKey key64 = RegistryKey.OpenRemoteBaseKey(RegistryHive.LocalMachine, Environment.MachineName, RegistryView.Registry64).OpenSubKey(@"SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\ShellIconOverlayIdentifiers"))
                foreach (string subKey in key64.GetSubKeyNames())
                {
                    Guid value = Guid.Parse((string)key64.OpenSubKey(subKey).GetValue(null));
                    if (!ShellIconOverlayIdentifiers.ContainsKey(subKey))
                        ShellIconOverlayIdentifiers.Add(subKey, value);
                }
        }
    }
}

Relevant information here IconOverlayGuid.

Then compare:

public enum SyncStatus { Off, Unknown, Syncing, Synced, SharedSyncing, SharedSynced, Error }

private SyncStatus CheckIfSync(DirectoryInfo di)
{
    ExtractIconInfo IcoInfo = new ExtractIconInfo(di);
    if (IcoInfo != null)
    {
        if (IcoInfo.IconOverlayGuid == Guid.Empty) return SyncStatus.Off;
        else if (IcoInfo.IconOverlayGuid == new Guid("{BBACC218-34EA-4666-9D7A-C78F2274A524}")) return SyncStatus.Error;
        else if (IcoInfo.IconOverlayGuid == new Guid("{F241C880-6982-4CE5-8CF7-7085BA96DA5A}")) return SyncStatus.Synced;
        else if (IcoInfo.IconOverlayGuid == new Guid("{A0396A93-DC06-4AEF-BEE9-95FFCCAEF20E}")) return SyncStatus.Syncing;
        else if (IcoInfo.IconOverlayGuid == new Guid("{5AB7172C-9C11-405C-8DD5-AF20F3606282}")) return SyncStatus.SharedSynced;
        else if (IcoInfo.IconOverlayGuid == new Guid("{A78ED123-AB77-406B-9962-2A5D9D2F7F30}")) return SyncStatus.SharedSyncing;
        else return SyncStatus.Unknown;
    }
    else return SyncStatus.Unknown;
}

FileSyncShell.dll. CLSID : HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\ShellIconOverlayIdentifiers HKLM\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Explorer\ShellIconOverlayIdentifiers.

REGEDIT

  • OneDrive1:
  • OneDrive2:
  • OneDrive3:
  • OneDrive4:
  • OneDrive5:

, !

( , !)

+4

, LastModifiedDateTime.

...Drive.Root.ItemWithPath(file).Request().GetAsync()).FileSystemInfo.LastModifiedDateTime
0

Source: https://habr.com/ru/post/1664288/

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