SqlServerDsc: Changes to Invoke-Query (#1407)

- Changes to helper function Invoke-Query - Now it will output verbose messages of the query that is run, so it not as quiet of what it is doing when a user asks for verbose output (issue #1404). - It is possible to redact text in the verbose output by providing strings in the new parameter `RedactText`.
dsccommunity · Jul 22, 2019 · adcf2bb · adcf2bb
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -17,6 +17,11 @@
     - Can also pipe in 'Microsoft.SqlServer.Management.Smo.Server' object.
     - Can pipe Connect-SQL | Invoke-Query.
     - Added default values to Invoke-Query.
+    - Now it will output verbose messages of the query that is run, so it
+      not as quiet of what it is doing when a user asks for verbose output
+      ([issue #1404](https://github.com/PowerShell/SqlServerDsc/issues/1404)).
+    - It is possible to redact text in the verbose output by providing
+      strings in the new parameter `RedactText`.
   - Minor style fixes in unit tests.
   - Changes to helper function Connect-SQL
     - When impersonating WindowsUser credential use the NetworkCredential UserName.

diff --git a/Modules/SqlServerDsc.Common/SqlServerDsc.Common.psm1 b/Modules/SqlServerDsc.Common/SqlServerDsc.Common.psm1
@@ -1594,24 +1594,30 @@ function Restart-ReportingServicesService
         The query string to execute.
 
     .PARAMETER DatabaseCredential
-        PSCredential object with the credentials to use to impersonate a user when connecting.
-        If this is not provided then the current user will be used to connect to the SQL Server Database Engine instance.
+        PSCredential object with the credentials to use to impersonate a user
+        when connecting. If this is not provided then the current user will be
+        used to connect to the SQL Server Database Engine instance.
 
     .PARAMETER LoginType
         Specifies which type of logon credential should be used. The valid types are
         Integrated, WindowsUser, and SqlLogin. If WindowsUser or SqlLogin are specified
         then the SetupCredential needs to be specified as well.
 
     .PARAMETER SqlServerObject
-        You can pass in an object type of 'Microsoft.SqlServer.Management.Smo.Server'. This can also be passed in
-        through the pipeline allowing you to use connect-sql | invoke-query if you wish.
+        You can pass in an object type of 'Microsoft.SqlServer.Management.Smo.Server'.
+        This can also be passed in through the pipeline. See examples.
 
     .PARAMETER WithResults
         Specifies if the query should return results.
 
     .PARAMETER StatementTimeout
         Set the query StatementTimeout in seconds. Default 600 seconds (10mins).
 
+    .PARAMETER RedactText
+        One or more strings to redact from the query when verbose messages are
+        written to the console. Strings here will be escaped so they will not
+        be interpreted as regular expressions (RegEx).
+
     .EXAMPLE
         Invoke-Query -SQLServer Server1 -SQLInstanceName MSSQLSERVER -Database master `
             -Query 'SELECT name FROM sys.databases' -WithResults
@@ -1623,6 +1629,12 @@ function Restart-ReportingServicesService
     .EXAMPLE
         Connect-SQL @sqlConnectionParameters | Invoke-Query -Database master `
             -Query 'SELECT name FROM sys.databases' -WithResults
+
+    .EXAMPLE
+        Invoke-Query -SQLServer Server1 -SQLInstanceName MSSQLSERVER -Database MyDatabase `
+            -Query "select * from MyTable where password = 'Pa\ssw0rd1' and password = 'secret passphrase'" `
+            -WithResults -RedactText @('Pa\sSw0rd1','Secret PassPhrase') -Verbose
+
 #>
 function Invoke-Query
 {
@@ -1670,7 +1682,11 @@ function Invoke-Query
         [Parameter()]
         [ValidateNotNull()]
         [System.Int32]
-        $StatementTimeout = 600
+        $StatementTimeout = 600,
+
+        [Parameter()]
+        [System.String[]]
+        $RedactText
     )
 
     if ($PSCmdlet.ParameterSetName -eq 'SqlObject')
@@ -1694,10 +1710,27 @@ function Invoke-Query
         $serverObject = Connect-SQL @connectSQLParameters
     }
 
+    $redactedQuery = $Query
+
+    foreach ($redactString in $RedactText)
+    {
+        <#
+            Escaping the string to handle strings which could look like
+            regular expressions, like passwords.
+        #>
+        $escapedRedactedString = [System.Text.RegularExpressions.Regex]::Escape($redactString)
+
+        $redactedQuery = $redactedQuery -ireplace $escapedRedactedString,'*******'
+    }
+
     if ($WithResults)
     {
         try
         {
+            Write-Verbose -Message (
+                $script:localizedData.ExecuteQueryWithResults -f $redactedQuery
+            ) -Verbose
+
             $result = $serverObject.Databases[$Database].ExecuteWithResults($Query)
         }
         catch
@@ -1710,6 +1743,10 @@ function Invoke-Query
     {
         try
         {
+            Write-Verbose -Message (
+                $script:localizedData.ExecuteNonQuery -f $redactedQuery
+            ) -Verbose
+
             $serverObject.Databases[$Database].ExecuteNonQuery($Query)
         }
         catch

diff --git a/Modules/SqlServerDsc.Common/en-US/SqlServerDsc.Common.strings.psd1 b/Modules/SqlServerDsc.Common/en-US/SqlServerDsc.Common.strings.psd1
@@ -57,4 +57,6 @@ ConvertFrom-StringData @'
     ConnectingUsingIntegrated = Connecting as current user '{0}' using integrated security. (SQLCOMMON0054)
     CredentialsNotSpecified = The Logon type of '{0}' was specified which requires credentials, but the credentials parameter was not specified. (SQLCOMMON0055)
     ConnectingUsingImpersonation = Impersonate credential '{0}' with login type '{1}'. (SQLCOMMON0056)
+    ExecuteQueryWithResults = Returning the results of the query `{0}`. (SQLCOMMON0057)
+    ExecuteNonQuery = Executing the query `{0}`. (SQLCOMMON0058)
 '@
diff --git a/Modules/SqlServerDsc.Common/sv-SE/SqlServerDsc.Common.strings.psd1 b/Modules/SqlServerDsc.Common/sv-SE/SqlServerDsc.Common.strings.psd1
@@ -62,5 +62,7 @@ ConvertFrom-StringData @'
     ClusterLoginPermissionsPresent = The cluster login '{0}' has the required permissions. (SQLCOMMON0053)
     ConnectingUsingIntegrated = Anslutning som nuvarande användare '{0}' med integrerad säkerhet. (SQLCOMMON0054)
     CredentialsNotSpecified = The Logon type of '{0}' was specified which requires credentials, but the credentials parameter was not specified. (SQLCOMMON0055)
-    ConnectingUsingImpersonation = Impersoner credential '{0}' med inloggningstyp '{1}'. (SQLCOMMON0056)
+    ConnectingUsingImpersonation = Uppträder som behörigheten '{0}' med inloggningstyp '{1}'. (SQLCOMMON0056)
+    ExecuteQueryWithResults = Returnerar resultatet av frågan `{0}`. (SQLCOMMON0057)
+    ExecuteNonQuery = Exekverar frågan `{0}`. (SQLCOMMON0058)
 '@
diff --git a/Tests/Unit/SqlServerDsc.Common.Tests.ps1 b/Tests/Unit/SqlServerDsc.Common.Tests.ps1
@@ -1465,14 +1465,16 @@ InModuleScope 'SqlServerDsc.Common' {
             Database           = 'master'
         }
 
-        Context 'Execute a query with no results' {
+        Context 'When executing a query with no results' {
+            AfterEach {
+                Assert-MockCalled -CommandName Connect-SQL -Scope It -Times 1 -Exactly
+            }
+
             It 'Should execute the query silently' {
                 $queryParams.Query = "EXEC sp_configure 'show advanced option', '1'"
                 $mockExpectedQuery = $queryParams.Query.Clone()
 
                 { Invoke-Query @queryParams } | Should -Not -Throw
-
-                Assert-MockCalled -CommandName Connect-SQL -Scope It -Times 1 -Exactly
             }
 
             It 'Should throw the correct error, ExecuteNonQueryFailed, when executing the query fails' {
@@ -1481,12 +1483,37 @@ InModuleScope 'SqlServerDsc.Common' {
                 { Invoke-Query @queryParams } | Should -Throw (
                     $script:localizedData.ExecuteNonQueryFailed -f $queryParams.Database
                 )
+            }
 
-                Assert-MockCalled -CommandName Connect-SQL -Scope It -Times 1 -Exactly
+            Context 'When text should be redacted' {
+                BeforeAll {
+                    Mock -CommandName Write-Verbose -ParameterFilter {
+                        $Message -eq (
+                            $script:localizedData.ExecuteNonQuery -f
+                                "select * from MyTable where password = '*******' and password = '*******'"
+                        )
+                    } -MockWith {
+                        <#
+                            MUST return another message than the parameter filter
+                            is looking for, otherwise we get into a endless loop.
+                            We returning the to show in the output how the verbose
+                            message was redacted.
+                        #>
+                        Write-Verbose -Message ('MOCK OUTPUT: {0}' -f $Message) -Verbose
+                    }
+                }
+
+                It 'Should execute the query silently and redact text in the verbose output' {
+                    $queryParams.Query = "select * from MyTable where password = 'Pa\ssw0rd1' and password = 'secret passphrase'"
+                    $mockExpectedQuery = $queryParams.Query.Clone()
+
+                    # The `Secret PassPhrase` is using the casing like this to test case-insensitive replace.
+                    { Invoke-Query @queryParams -RedactText @('Pa\sSw0rd1','Secret PassPhrase') } | Should -Not -Throw
+                }
             }
         }
 
-        Context 'Execute a query with results' {
+        Context 'When executing a query with results' {
             It 'Should execute the query and return a result set' {
                 $queryParams.Query = 'SELECT name FROM sys.databases'
                 $mockExpectedQuery = $queryParams.Query.Clone()
@@ -1505,9 +1532,36 @@ InModuleScope 'SqlServerDsc.Common' {
 
                 Assert-MockCalled -CommandName Connect-SQL -Scope It -Times 1 -Exactly
             }
+
+            Context 'When text should be redacted' {
+                BeforeAll {
+                    Mock -CommandName Write-Verbose -ParameterFilter {
+                        $Message -eq (
+                            $script:localizedData.ExecuteQueryWithResults -f
+                                "select * from MyTable where password = '*******' and password = '*******'"
+                        )
+                    } -MockWith {
+                        <#
+                            MUST return another message than the parameter filter
+                            is looking for, otherwise we get into a endless loop.
+                            We returning the to show in the output how the verbose
+                            message was redacted.
+                        #>
+                        Write-Verbose -Message ('MOCK OUTPUT: {0}' -f $Message) -Verbose
+                    }
+                }
+
+                It 'Should execute the query silently and redact text in the verbose output' {
+                    $queryParams.Query = "select * from MyTable where password = 'Pa\ssw0rd1' and password = 'secret passphrase'"
+                    $mockExpectedQuery = $queryParams.Query.Clone()
+
+                    # The `Secret PassPhrase` is using the casing like this to test case-insensitive replace.
+                    { Invoke-Query @queryParams -RedactText @('Pa\sSw0rd1','Secret PassPhrase') -WithResults } | Should -Not -Throw
+                }
+            }
         }
 
-        Context 'Pass in an SMO Server Object' {
+        Context 'When passing in an SMO Server Object' {
             Context 'Execute a query with no results' {
                 It 'Should execute the query silently' {
                     $queryParametersWithSMO.Query = "EXEC sp_configure 'show advanced option', '1'"
@@ -1529,7 +1583,7 @@ InModuleScope 'SqlServerDsc.Common' {
                 }
             }
 
-            Context 'Execute a query with results' {
+            Context 'When executing a query with results' {
                 It 'Should execute the query and return a result set' {
                     $queryParametersWithSMO.Query = 'SELECT name FROM sys.databases'
                     $mockExpectedQuery = $queryParametersWithSMO.Query.Clone()
@@ -1550,7 +1604,7 @@ InModuleScope 'SqlServerDsc.Common' {
                 }
             }
 
-            Context 'Execute a query with piped SMO server object' {
+            Context 'When executing a query with piped SMO server object' {
                 It 'Should execute the query and return a result set' {
                     $mockQuery = 'SELECT name FROM sys.databases'
                     $mockExpectedQuery = $mockQuery