desktop-edge-win/ZitiUpdateService/Utils.cs

/*
	Copyright NetFoundry Inc.

	Licensed under the Apache License, Version 2.0 (the "License");
	you may not use this file except in compliance with the License.
	You may obtain a copy of the License at

	https://www.apache.org/licenses/LICENSE-2.0

	Unless required by applicable law or agreed to in writing, software
	distributed under the License is distributed on an "AS IS" BASIS,
	WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	See the License for the specific language governing permissions and
	limitations under the License.
*/

using System;
using System.Security.AccessControl;
using System.Security.Principal;
using System.IO;

using System.Timers;
using System.Configuration;
using System.Threading.Tasks;

using ZitiDesktopEdge.DataStructures;
using NLog;
using System.Reflection;
using System.Security.Cryptography.X509Certificates;
using ZitiDesktopEdge.ServiceClient;
using ZitiDesktopEdge.Server;
using System.IO.Compression;
using Newtonsoft.Json;

namespace ZitiUpdateService {
    public static class AccessUtils {
        private static readonly Logger Logger = LogManager.GetCurrentClassLogger();

        public static void GrantAccessToDirectory(string path) {
            try {
                if (!Directory.Exists(path)) {
                    return;
                }
                Logger.Debug("granting access permissions to folder: {path}", path);
                DirectorySecurity sec = Directory.GetAccessControl(path);
                // Using this instead of the "Everyone" string means we work on non-English systems.
                SecurityIdentifier everyone = new SecurityIdentifier(WellKnownSidType.AuthenticatedUserSid, null);
                sec.AddAccessRule(new FileSystemAccessRule(everyone, FileSystemRights.Modify | FileSystemRights.Synchronize, InheritanceFlags.ContainerInherit | InheritanceFlags.ObjectInherit, PropagationFlags.None, AccessControlType.Allow));
                Directory.SetAccessControl(path, sec);
            } catch (Exception e) {
                Logger.Error(e, "Unexpected error when setting directory security: {0}", e.Message);
            }
        }

        public static void GrantAccessToFile(string path) {
            try {
                if (!File.Exists(path)) {
                    return;
                }
                Logger.Debug("granting access permissions to file: {path}", path);
                FileSecurity sec = File.GetAccessControl(path);
                // Using this instead of the "Everyone" string means we work on non-English systems.
                SecurityIdentifier everyone = new SecurityIdentifier(WellKnownSidType.AuthenticatedUserSid, null);
                sec.AddAccessRule(new FileSystemAccessRule(everyone, FileSystemRights.Modify | FileSystemRights.Delete | FileSystemRights.Synchronize, InheritanceFlags.None, PropagationFlags.None, AccessControlType.Allow));
                File.SetAccessControl(path, sec);
            } catch (Exception e) {
                Logger.Error(e, "Unexpected error when setting directory security: {0}", e.Message);
            }
        }
    }
}