DSCResources/DSC_SqlLogin/DSC_SqlLogin.psm1
$script:sqlServerDscHelperModulePath = Join-Path -Path $PSScriptRoot -ChildPath '..\..\Modules\SqlServerDsc.Common' $script:resourceHelperModulePath = Join-Path -Path $PSScriptRoot -ChildPath '..\..\Modules\DscResource.Common' Import-Module -Name $script:sqlServerDscHelperModulePath Import-Module -Name $script:resourceHelperModulePath $script:localizedData = Get-LocalizedData -DefaultUICulture 'en-US' <# .SYNOPSIS Gets the specified login by name. .PARAMETER Name The name of the login to retrieve. .PARAMETER ServerName Hostname of the SQL Server to retrieve the login from. Default value is the current computer name. .PARAMETER InstanceName Name of the SQL instance to retrieve the login from. #> function Get-TargetResource { [CmdletBinding()] [OutputType([System.Collections.Hashtable])] param ( [Parameter(Mandatory = $true)] [System.String] $Name, [Parameter()] [ValidateNotNullOrEmpty()] [System.String] $ServerName = (Get-ComputerName), [Parameter(Mandatory = $true)] [System.String] $InstanceName ) Write-Verbose -Message ( $script:localizedData.GetLogin -f $Name, $ServerName, $InstanceName ) $serverObject = Connect-SQL -ServerName $ServerName -InstanceName $InstanceName -ErrorAction 'Stop' if ($serverObject) { $login = $serverObject.Logins[$Name] if ($login) { $ensure = 'Present' } else { $ensure = 'Absent' } } Write-Verbose -Message ( $script:localizedData.LoginCurrentState -f $Name, $ensure, $ServerName, $InstanceName ) $returnValue = @{ Ensure = $ensure Name = $Name LoginType = $login.LoginType ServerName = $ServerName InstanceName = $InstanceName Disabled = $login.IsDisabled DefaultDatabase = $login.DefaultDatabase } if ($login.LoginType -eq 'SqlLogin') { $returnValue.Add('LoginMustChangePassword', $login.MustChangePassword) $returnValue.Add('LoginPasswordExpirationEnabled', $login.PasswordExpirationEnabled) $returnValue.Add('LoginPasswordPolicyEnforced', $login.PasswordPolicyEnforced) } return $returnValue } <# .SYNOPSIS Creates a login. .PARAMETER Ensure Specifies if the login to exist. Default is 'Present'. .PARAMETER Name The name of the login to retrieve. .PARAMETER LoginType The type of login to create. Default is 'WindowsUser' .PARAMETER ServerName Hostname of the SQL Server to create the login on. Default value is the current computer name. .PARAMETER InstanceName Name of the SQL instance to create the login on. .PARAMETER LoginCredential The credential containing the password for a SQL Login. Only applies if the login type is SqlLogin. .PARAMETER LoginMustChangePassword Specifies if the login is required to have its password change on the next login. Only applies to SQL Logins. Does not update pre-existing SQL Logins. .PARAMETER LoginPasswordExpirationEnabled Specifies if the login password is required to expire in accordance to the operating system security policy. Only applies to SQL Logins. .PARAMETER LoginPasswordPolicyEnforced Specifies if the login password is required to conform to the password policy specified in the system security policy. Only applies to SQL Logins. .PARAMETER Disabled Specifies if the login is disabled. Default is $false. .PARAMETER DefaultDatabase Specifies the default database for the login. #> function Set-TargetResource { [CmdletBinding()] param ( [Parameter()] [ValidateSet('Present', 'Absent')] [System.String] $Ensure = 'Present', [Parameter(Mandatory = $true)] [System.String] $Name, [Parameter()] [ValidateSet( 'WindowsUser', 'WindowsGroup', 'SqlLogin', 'Certificate', 'AsymmetricKey', 'ExternalUser', 'ExternalGroup' )] [System.String] $LoginType = 'WindowsUser', [Parameter()] [ValidateNotNullOrEmpty()] [System.String] $ServerName = (Get-ComputerName), [Parameter(Mandatory = $true)] [System.String] $InstanceName, [Parameter()] [System.Management.Automation.PSCredential] $LoginCredential, [Parameter()] [System.Boolean] $LoginMustChangePassword, [Parameter()] [System.Boolean] $LoginPasswordExpirationEnabled, [Parameter()] [System.Boolean] $LoginPasswordPolicyEnforced, [Parameter()] [System.Boolean] $Disabled, [Parameter()] [System.String] $DefaultDatabase ) $serverObject = Connect-SQL -ServerName $ServerName -InstanceName $InstanceName -ErrorAction 'Stop' switch ( $Ensure ) { 'Present' { if ( $serverObject.Logins[$Name] ) { $login = $serverObject.Logins[$Name] if ( $login.LoginType -eq 'SqlLogin' ) { # There is no way to update 'MustChangePassword' on existing login so must explicitly throw exception to avoid this functionality being assumed if ( $PSBoundParameters.ContainsKey('LoginMustChangePassword') -and $login.MustChangePassword -ne $LoginMustChangePassword ) { $errorMessage = $script:localizedData.MustChangePasswordCannotBeChanged New-InvalidOperationException -Message $errorMessage } # Update SQL login data if either `PasswordPolicyEnforced or `PasswordExpirationEnabled` is specified and not in desired state. # Avoids executing `Update-SQLServerLogin` twice if both are not in desired state. if ( ( $PSBoundParameters.ContainsKey('LoginPasswordPolicyEnforced') -and $login.PasswordPolicyEnforced -ne $LoginPasswordPolicyEnforced ) -or ( $PSBoundParameters.ContainsKey('LoginPasswordExpirationEnabled') -and $login.PasswordExpirationEnabled -ne $LoginPasswordExpirationEnabled ) ) { <# PasswordExpirationEnabled can only be set to $true if PasswordPolicyEnforced is also set or already set to $true. Otherwise the SQL Server will throw the exception "The CHECK_EXPIRATION option cannot be used when CHECK_POLICY is OFF". #> if ( $PSBoundParameters.ContainsKey('LoginPasswordPolicyEnforced') ) { Write-Verbose -Message ( $script:localizedData.SetPasswordPolicyEnforced -f $LoginPasswordPolicyEnforced, $Name, $ServerName, $InstanceName ) $login.PasswordPolicyEnforced = $LoginPasswordPolicyEnforced } if ( $PSBoundParameters.ContainsKey('LoginPasswordExpirationEnabled') ) { Write-Verbose -Message ( $script:localizedData.SetPasswordExpirationEnabled -f $LoginPasswordExpirationEnabled, $Name, $ServerName, $InstanceName ) $login.PasswordExpirationEnabled = $LoginPasswordExpirationEnabled } Update-SQLServerLogin -Login $login } # Set the password if it is specified if ( $LoginCredential ) { Write-Verbose -Message ( $script:localizedData.SetPassword -f $Name, $ServerName, $InstanceName ) Set-SQLServerLoginPassword -Login $login -SecureString $LoginCredential.Password } } if ( $PSBoundParameters.ContainsKey('Disabled') -and ($login.IsDisabled -ne $Disabled) ) { if ( $Disabled ) { Write-Verbose -Message ( $script:localizedData.SetDisabled -f $Name, $ServerName, $InstanceName ) $login.Disable() } else { Write-Verbose -Message ( $script:localizedData.SetEnabled -f $Name, $ServerName, $InstanceName ) $login.Enable() } } if ( $PSBoundParameters.ContainsKey('DefaultDatabase') -and ($login.DefaultDatabase -ne $DefaultDatabase) ) { $login.DefaultDatabase = $DefaultDatabase Update-SQLServerLogin -Login $login } } else { # Some login types need additional work. These will need to be fleshed out more in the future if ( @('Certificate', 'AsymmetricKey', 'ExternalUser', 'ExternalGroup') -contains $LoginType ) { $errorMessage = $script:localizedData.LoginTypeNotImplemented -f $LoginType New-NotImplementedException -Message $errorMessage } if ( ( $LoginType -eq 'SqlLogin' ) -and ( -not $LoginCredential ) ) { $errorMessage = $script:localizedData.LoginCredentialNotFound -f $Name New-ObjectNotFoundException -Message $errorMessage } Write-Verbose -Message ( $script:localizedData.CreateLogin -f $Name, $LoginType, $ServerName, $InstanceName ) $login = New-Object -TypeName 'Microsoft.SqlServer.Management.Smo.Login' -ArgumentList $serverObject, $Name $login.LoginType = $LoginType switch ($LoginType) { 'SqlLogin' { # Verify the instance is in Mixed authentication mode if ( $serverObject.LoginMode -notmatch 'Mixed|Normal' ) { $errorMessage = $script:localizedData.IncorrectLoginMode -f $ServerName, $InstanceName, $serverObject.LoginMode New-InvalidOperationException -Message $errorMessage } <# PasswordExpirationEnabled can only be set to $true if PasswordPolicyEnforced is also set to $true. If not the SQL Server will throw the exception "The CHECK_EXPIRATION option cannot be used when CHECK_POLICY is OFF". #> $login.PasswordPolicyEnforced = $LoginPasswordPolicyEnforced $login.PasswordExpirationEnabled = $LoginPasswordExpirationEnabled if ( $LoginMustChangePassword ) { $LoginCreateOptions = [Microsoft.SqlServer.Management.Smo.LoginCreateOptions]::MustChange } else { $LoginCreateOptions = [Microsoft.SqlServer.Management.Smo.LoginCreateOptions]::None } New-SQLServerLogin -Login $login -LoginCreateOptions $LoginCreateOptions -SecureString $LoginCredential.Password -ErrorAction Stop } default { New-SQLServerLogin -Login $login } } # We can only disable the login once it's been created if ( $Disabled ) { Write-Verbose -Message ( $script:localizedData.SetDisabled -f $Name, $ServerName, $InstanceName ) $login.Disable() } # Set the default database if specified if ( $PSBoundParameters.ContainsKey('DefaultDatabase') ) { $login.DefaultDatabase = $DefaultDatabase Update-SQLServerLogin -Login $login } } } 'Absent' { if ( $serverObject.Logins[$Name] ) { Write-Verbose -Message ( $script:localizedData.DropLogin -f $Name, $ServerName, $InstanceName ) Remove-SQLServerLogin -Login $serverObject.Logins[$Name] } } } } <# .SYNOPSIS Tests to verify the login exists and the properties are correctly set. .PARAMETER Ensure Specifies if the login is supposed to exist. Default is 'Present'. .PARAMETER Name The name of the login. .PARAMETER LoginType The type of login. Default is 'WindowsUser' .PARAMETER ServerName Hostname of the SQL Server to create the login on. Default value is the current computer name. .PARAMETER InstanceName Name of the SQL instance. .PARAMETER LoginCredential The credential containing the password for a SQL Login. Only applies if the login type is SqlLogin. .PARAMETER LoginMustChangePassword Specifies if the login is required to have its password change on the next login. Only applies to SQL Logins. .PARAMETER LoginPasswordExpirationEnabled Specifies if the login password is required to expire in accordance to the operating system security policy. Only applies to SQL Logins. .PARAMETER LoginPasswordPolicyEnforced Specifies if the login password is required to conform to the password policy specified in the system security policy. Only applies to SQL Logins. .PARAMETER Disabled Specifies if the login is disabled. Default is $false. .PARAMETER DefaultDatabase Specifies the default database for the login. #> function Test-TargetResource { [CmdletBinding()] [OutputType([System.Boolean])] param ( [Parameter()] [ValidateSet('Present', 'Absent')] [System.String] $Ensure = 'Present', [Parameter(Mandatory = $true)] [System.String] $Name, [Parameter()] [ValidateSet('WindowsUser', 'WindowsGroup', 'SqlLogin', 'Certificate', 'AsymmetricKey', 'ExternalUser', 'ExternalGroup' )] [System.String] $LoginType = 'WindowsUser', [Parameter()] [ValidateNotNullOrEmpty()] [System.String] $ServerName = (Get-ComputerName), [Parameter(Mandatory = $true)] [System.String] $InstanceName, [Parameter()] [System.Management.Automation.PSCredential] $LoginCredential, [Parameter()] [System.Boolean] $LoginMustChangePassword, [Parameter()] [System.Boolean] $LoginPasswordExpirationEnabled, [Parameter()] [System.Boolean] $LoginPasswordPolicyEnforced, [Parameter()] [System.Boolean] $Disabled, [Parameter()] [System.String] $DefaultDatabase ) Write-Verbose -Message ( $script:localizedData.TestingConfiguration -f $Name, $ServerName, $InstanceName ) # Assume the test will pass $testPassed = $true $getParams = @{ Name = $Name ServerName = $ServerName InstanceName = $InstanceName } $loginInfo = Get-TargetResource @getParams if ( $Ensure -ne $loginInfo.Ensure ) { Write-Verbose -Message ( $script:localizedData.WrongEnsureState -f $Name, $loginInfo.Ensure, $Ensure ) $testPassed = $false } if ( $Ensure -eq 'Present' -and $($loginInfo.Ensure) -eq 'Present' ) { if ( $PSBoundParameters.ContainsKey('LoginType') -and $LoginType -ne $loginInfo.LoginType ) { Write-Verbose -Message ( $script:localizedData.WrongLoginType -f $Name, $loginInfo.LoginType, $LoginType ) $testPassed = $false } if ( $PSBoundParameters.ContainsKey('Disabled') -and ($loginInfo.Disabled -ne $Disabled) ) { if ($Disabled) { Write-Verbose -Message ( $script:localizedData.ExpectedDisabled -f $Name ) } else { Write-Verbose -Message ( $script:localizedData.ExpectedEnabled -f $Name ) } $testPassed = $false } if ( $PSBoundParameters.ContainsKey('DefaultDatabase') -and ($loginInfo.DefaultDatabase -ne $DefaultDatabase) ) { Write-Verbose -Message ( $script:localizedData.WrongDefaultDatabase -f $Name, $loginInfo.DefaultDatabase, $DefaultDatabase ) $testPassed = $false } if ( $LoginType -eq 'SqlLogin' ) { if ( $PSBoundParameters.ContainsKey('LoginPasswordExpirationEnabled') -and $LoginPasswordExpirationEnabled -ne $loginInfo.LoginPasswordExpirationEnabled ) { if ($LoginPasswordExpirationEnabled) { Write-Verbose -Message ( $script:localizedData.ExpectedLoginPasswordExpirationEnabled -f $Name ) } else { Write-Verbose -Message ( $script:localizedData.ExpectedLoginPasswordExpirationDisabled -f $Name ) } $testPassed = $false } if ( $PSBoundParameters.ContainsKey('LoginPasswordPolicyEnforced') -and $LoginPasswordPolicyEnforced -ne $loginInfo.LoginPasswordPolicyEnforced ) { if ($LoginPasswordPolicyEnforced) { Write-Verbose -Message ( $script:localizedData.ExpectedLoginPasswordPolicyEnforcedEnabled -f $Name ) } else { Write-Verbose -Message ( $script:localizedData.ExpectedLoginPasswordPolicyEnforcedDisabled -f $Name ) } $testPassed = $false } # If testPassed is still true and a login credential was specified, test the password if ( $testPassed -and $LoginCredential ) { $userCredential = [System.Management.Automation.PSCredential]::new($Name, $LoginCredential.Password) try { Connect-SQL -ServerName $ServerName -InstanceName $InstanceName -SetupCredential $userCredential -LoginType 'SqlLogin' -ErrorAction 'Stop' | Out-Null } catch { # Check to see if the parameter of $Disabled is true if ($Disabled) { <# An exception occurred and $Disabled is true, we need to check the error codes for expected error numbers. Recursively search the Exception variable and inner Exceptions for the specific numbers. 18470 - Username and password are correct, but account is disabled. 18456 - Login failed for user. #> if ((Find-ExceptionByNumber -ExceptionToSearch $_.Exception -ErrorNumber 18470)) { Write-Verbose -Message ( $script:localizedData.PasswordValidButLoginDisabled -f $Name ) } elseif ((Find-ExceptionByNumber -ExceptionToSearch $_.Exception -ErrorNumber 18456)) { Write-Verbose -Message ( '{0} {1}' -f ($script:localizedData.PasswordValidationFailed -f $Name), ($script:localizedData.PasswordValidationFailedMessage -f $_.Exception.message) ) # The password was not correct, password validation failed $testPassed = $false } else { # Something else went wrong, rethrow error $errorMessage = $script:localizedData.PasswordValidationError New-InvalidOperationException -Message $errorMessage -ErrorRecord $_ } } else { Write-Verbose -Message ( $script:localizedData.PasswordValidationFailed -f $Name ) $testPassed = $false } } } } } return $testPassed } <# .SYNOPSIS Alters a login. .PARAMETER Login The Login object to alter. .NOTES This function allows us to more easily write mocks. #> function Update-SQLServerLogin { param ( [Parameter(Mandatory = $true)] [Microsoft.SqlServer.Management.Smo.Login] $Login ) try { $originalErrorActionPreference = $ErrorActionPreference $ErrorActionPreference = 'Stop' $Login.Alter() } catch { $errorMessage = $script:localizedData.AlterLoginFailed -f $Login.Name New-InvalidOperationException -Message $errorMessage -ErrorRecord $_ } finally { $ErrorActionPreference = $originalErrorActionPreference } } <# .SYNOPSIS Creates a login. .PARAMETER Login The Login object to create. .PARAMETER LoginCreateOptions The LoginCreateOptions object to use when creating a SQL login. .PARAMETER SecureString The SecureString object that contains the password for a SQL login. .EXAMPLE CreateLogin -Login $login -LoginCreateOptions $LoginCreateOptions -SecureString $LoginCredential.Password -ErrorAction Stop .EXAMPLE CreateLogin -Login $login .NOTES This function allows us to more easily write mocks. #> function New-SQLServerLogin { [CmdletBinding(DefaultParameterSetName = 'WindowsLogin')] param ( [Parameter(Mandatory = $true, ParameterSetName = 'WindowsLogin')] [Parameter(Mandatory = $true, ParameterSetName = 'SqlLogin')] [Microsoft.SqlServer.Management.Smo.Login] $Login, [Parameter(Mandatory = $true, ParameterSetName = 'SqlLogin')] [Microsoft.SqlServer.Management.Smo.LoginCreateOptions] $LoginCreateOptions, [Parameter(Mandatory = $true, ParameterSetName = 'SqlLogin')] [System.Security.SecureString] $SecureString ) switch ( $PSCmdlet.ParameterSetName ) { 'SqlLogin' { try { $originalErrorActionPreference = $ErrorActionPreference $ErrorActionPreference = 'Stop' $login.Create($SecureString, $LoginCreateOptions) } catch [Microsoft.SqlServer.Management.Smo.FailedOperationException] { if ( $_.Exception.InnerException.InnerException.InnerException -match 'Password validation failed' ) { $errorMessage = $script:localizedData.CreateLoginFailedOnPassword -f $Login.Name New-InvalidOperationException -Message $errorMessage -ErrorRecord $_ } else { $errorMessage = $script:localizedData.CreateLoginFailed -f $Login.Name New-InvalidOperationException -Message $errorMessage -ErrorRecord $_ } } catch { $errorMessage = $script:localizedData.CreateLoginFailed -f $Login.Name New-InvalidOperationException -Message $errorMessage -ErrorRecord $_ } finally { $ErrorActionPreference = $originalErrorActionPreference } } 'WindowsLogin' { try { $originalErrorActionPreference = $ErrorActionPreference $ErrorActionPreference = 'Stop' $login.Create() } catch { $errorMessage = $script:localizedData.CreateLoginFailed -f $Login.Name New-InvalidOperationException -Message $errorMessage -ErrorRecord $_ } finally { $ErrorActionPreference = $originalErrorActionPreference } } } } <# .SYNOPSIS Drops a login. .PARAMETER Login The Login object to drop. .NOTES This function allows us to more easily write mocks. #> function Remove-SQLServerLogin { param ( [Parameter(Mandatory = $true)] [Microsoft.SqlServer.Management.Smo.Login] $Login ) try { $originalErrorActionPreference = $ErrorActionPreference $ErrorActionPreference = 'Stop' $Login.Drop() } catch { $errorMessage = $script:localizedData.DropLoginFailed -f $Login.Name New-InvalidOperationException -Message $errorMessage -ErrorRecord $_ } finally { $ErrorActionPreference = $originalErrorActionPreference } } <# .SYNOPSIS Changes the password of a SQL Login. .PARAMETER Login The Login object to change the password on. .PARAMETER SecureString The SecureString object that contains the password for a SQL login. .NOTES This function allows us to more easily write mocks. #> function Set-SQLServerLoginPassword { param ( [Parameter(Mandatory = $true)] [Microsoft.SqlServer.Management.Smo.Login] $Login, [Parameter(Mandatory = $true)] [System.Security.SecureString] $SecureString ) try { $originalErrorActionPreference = $ErrorActionPreference $ErrorActionPreference = 'Stop' $Login.ChangePassword($SecureString) } catch [Microsoft.SqlServer.Management.Smo.FailedOperationException] { if ( $_.Exception.InnerException.InnerException.InnerException -match 'Password validation failed' ) { $errorMessage = $script:localizedData.SetPasswordValidationFailed -f $Login.Name New-InvalidOperationException -Message $errorMessage -ErrorRecord $_ } else { $errorMessage = $script:localizedData.SetPasswordFailed -f $Login.Name New-InvalidOperationException -Message $errorMessage -ErrorRecord $_ } } catch { $errorMessage = $script:localizedData.SetPasswordFailed -f $Login.Name New-InvalidOperationException -Message $errorMessage -ErrorRecord $_ } finally { $ErrorActionPreference = $originalErrorActionPreference } } |