Exemplo n.º 1
0
        internal static bool BeginImpersonation(NetCred credential, out IntPtr hUserToken)
        {
            hUserToken = IntPtr.Zero;
            IntPtr zero = IntPtr.Zero;

            if (credential != null)
            {
                string parsedUserName = credential.ParsedUserName;
                string password       = credential.Password;
                string domain         = credential.Domain;
                if (parsedUserName != null || password != null)
                {
                    int num = UnsafeNativeMethods.LogonUser(parsedUserName, domain, password, 9, 3, ref zero);
                    if (num != 0)
                    {
                        num = UnsafeNativeMethods.ImpersonateLoggedOnUser(zero);
                        if (num != 0)
                        {
                            hUserToken = zero;
                            return(true);
                        }
                        else
                        {
                            int lastWin32Error = Marshal.GetLastWin32Error();
                            UnsafeNativeMethods.CloseHandle(zero);
                            object[] objArray = new object[1];
                            objArray[0] = lastWin32Error;
                            throw new PrincipalOperationException(string.Format(CultureInfo.CurrentCulture, StringResources.UnableToImpersonateCredentials, objArray));
                        }
                    }
                    else
                    {
                        int      lastWin32Error1 = Marshal.GetLastWin32Error();
                        object[] objArray1       = new object[1];
                        objArray1[0] = lastWin32Error1;
                        throw new PrincipalOperationException(string.Format(CultureInfo.CurrentCulture, StringResources.UnableToImpersonateCredentials, objArray1));
                    }
                }
                else
                {
                    return(false);
                }
            }
            else
            {
                return(false);
            }
        }
Exemplo n.º 2
0
        internal static bool BeginImpersonation(NetCred credential, out IntPtr hUserToken)
        {
            GlobalDebug.WriteLineIf(GlobalDebug.Info, "Utils", "Entering BeginImpersonation");

            hUserToken = IntPtr.Zero;
            IntPtr hToken = IntPtr.Zero;

            // default credential is specified, no need to do impersonation
            if (credential == null)
            {
                GlobalDebug.WriteLineIf(GlobalDebug.Info, "Utils", "BeginImpersonation: nothing to impersonate");
                return(false);
            }

            // Retrive the parsed username which has had the domain removed because LogonUser
            // expects creds this way.
            string userName   = credential.ParsedUserName;
            string password   = credential.Password;
            string domainName = credential.Domain;

            // no need to do impersonation as username and password are both null
            if (userName == null && password == null)
            {
                GlobalDebug.WriteLineIf(GlobalDebug.Info, "Utils", "BeginImpersonation: nothing to impersonate (2)");
                return(false);
            }

            GlobalDebug.WriteLineIf(GlobalDebug.Info, "Utils", "BeginImpersonation: trying to impersonate " + userName);

            int result = UnsafeNativeMethods.LogonUser(
                userName,
                domainName,
                password,
                9,                             /* LOGON32_LOGON_NEW_CREDENTIALS */
                3,                             /* LOGON32_PROVIDER_WINNT50 */
                ref hToken);

            // check the result
            if (result == 0)
            {
                int lastError = Marshal.GetLastWin32Error();
                GlobalDebug.WriteLineIf(GlobalDebug.Error, "Utils", "BeginImpersonation: LogonUser failed, gle=" + lastError);

                throw new PrincipalOperationException(
                          String.Format(CultureInfo.CurrentCulture,
                                        StringResources.UnableToImpersonateCredentials,
                                        lastError));
            }

            result = UnsafeNativeMethods.ImpersonateLoggedOnUser(hToken);
            if (result == 0)
            {
                int lastError = Marshal.GetLastWin32Error();
                GlobalDebug.WriteLineIf(GlobalDebug.Error, "Utils", "BeginImpersonation: ImpersonateLoggedOnUser failed, gle=" + lastError);

                // Close the token the was created above....
                UnsafeNativeMethods.CloseHandle(hToken);

                throw new PrincipalOperationException(
                          String.Format(CultureInfo.CurrentCulture,
                                        StringResources.UnableToImpersonateCredentials,
                                        lastError));
            }

            hUserToken = hToken;
            return(true);
        }