Regression Bug fix: RunPowerShellScript activity fails to parse Power…

…Shell user password as the ParseIfExpression check leads to an exception if the password is not a WAL expression.

src/Scripts/EncryptData.ps1

@@ -8,19 +8,20 @@
 	NOTE: Edit the Version and PublicKeyToken of the WAL AssemblyName to match the one that you have deployed in GAC.
 	Also edit the $encryptionCertThumbprint of cert to be used for certificate based encryption.
 	
-    Finding Assembly verion and PublicKeyToken
-        gacutil.exe -l | findstr WorkflowActivityLibrary
-    Creatinig a self signed certificate for MIMWAL (You can use a legacy CSP such as Microsoft Strong Cryptographic Provider as shown in the example below)
+    To find Assembly verion and PublicKeyToken
+        .\gacutil.exe -l | findstr WorkflowActivityLibrary
+    To create a self-signed certificate for MIMWAL, you must use a legacy CSP (as .NET 3.5 only supports legacy CSPs).
+    You can use a legacy CSP such as Microsoft Strong Cryptographic Provider as shown in the example below:
         $cert = New-SelfSignedCertificate -DnsName "MIMWAL Encryption (Do Not Delete)" -CertStoreLocation "cert:\LocalMachine\My" -Provider "Microsoft Strong Cryptographic Provider" -NotAfter (Get-Date).AddYears(20)
         $cert.Thumbprint
         As of version v2.18.1110.0, only FIMService account needs read access to the private key of the MIMWAL certificate created above.
 #>
 
 $Error.Clear()
 
-$walAssemblyVersion = "2.20.0523.0"
-$walAssemblyPublicKeyToken = "31bf3856ad364e35"
-$encryptionCertThumbprint = "9C697919FB2FB2D6324ADE42D5F8CB49E8778C08" # cert to be used for encryption (from the cert:\localmachine\my\ store).
+$walAssemblyVersion = "2.20.0723.0" # edit appropriately
+$walAssemblyPublicKeyToken = "31bf3856ad364e35" # edit appropriately
+$encryptionCertThumbprint = "9C697919FB2FB2D6324ADE42D5F8CB49E8778C08" # cert to be used for encryption (from the cert:\localmachine\my\ store). Edit appropriately
 
 Add-Type -AssemblyName "System.Security"
 # use the full name for WAL assembly to eliminate need to assembly redirects for dependent assemblies.

src/VersionInfo.cs

@@ -22,7 +22,7 @@ internal static class VersionInfo
         ///      Build Number (MMDD)
         ///      Revision (if any on the same day)
         /// </summary>
-        internal const string Version = "2.20.0523.0";
+        internal const string Version = "2.20.0723.0";
 
         /// <summary>
         /// File Version information for the assembly consists of the following four values:
@@ -31,6 +31,6 @@ internal static class VersionInfo
         ///      Build Number (MMDD)
         ///      Revision (if any on the same day)
         /// </summary>
-        internal const string FileVersion = "2.20.0523.0";
+        internal const string FileVersion = "2.20.0723.0";
     }
 }

src/WorkflowActivityLibrary/Common/ExpressionEvaluator.cs

@@ -109,9 +109,18 @@ public static ParameterType DetermineParameterType(string parameter, bool suppre
                 // Function: contains ( and ends with )
                 // Lookup: starts with [// and ends with ]
                 // Variable: starts with $ and does not contain invalid characters
-                if (IdentifyExpressionComponents(parameter).Count > 1)
+                ArrayList components = IdentifyExpressionComponents(parameter, suppressValidationError);
+                if (components.Count > 1)
                 {
                     parameterType = ParameterType.Expression;
+                    foreach (string component in components)
+                    {
+                        if (DetermineParameterType(component, suppressValidationError) == ParameterType.Unknown)
+                        {
+                            parameterType = ParameterType.Unknown;
+                            break;
+                        }
+                    }
                 }
                 else if (long.TryParse(parameter, out parseInteger))
                 {
@@ -449,8 +458,9 @@ public void PublishVariable(string variable, object value, UpdateMode mode)
         /// Identifies the expression components.
         /// </summary>
         /// <param name="expression">The expression.</param>
+        /// <param name="suppressValidationError">Indicates whether to suppress the validation error or not.</param>
         /// <returns>The ArrayList of expression components.</returns>
-        private static ArrayList IdentifyExpressionComponents(string expression)
+        private static ArrayList IdentifyExpressionComponents(string expression, bool suppressValidationError)
         {
             Logger.Instance.WriteMethodEntry(EventIdentifier.ExpressionEvaluatorIdentifyExpressionComponents, "Expression: '{0}'.", expression);
 
@@ -484,12 +494,28 @@ private static ArrayList IdentifyExpressionComponents(string expression)
                 // parentheses characters do not match, throw an exception
                 if (openString)
                 {
-                    throw Logger.Instance.ReportError(EventIdentifier.ExpressionEvaluatorIdentifyExpressionComponentsQuotesValidationError, new InvalidExpressionException(Messages.ExpressionEvaluator_ExpressionQuotesValidationError, expression));
+                    if (suppressValidationError)
+                    {
+                        Logger.Instance.WriteVerbose(EventIdentifier.ExpressionEvaluatorIdentifyExpressionComponentsQuotesValidationError, Messages.ExpressionEvaluator_ExpressionQuotesValidationError, expression);
+                        return components;
+                    }
+                    else
+                    {
+                        throw Logger.Instance.ReportError(EventIdentifier.ExpressionEvaluatorIdentifyExpressionComponentsQuotesValidationError, new InvalidExpressionException(Messages.ExpressionEvaluator_ExpressionQuotesValidationError, expression));
+                    }
                 }
 
                 if (openFunctions != 0)
                 {
-                    throw Logger.Instance.ReportError(EventIdentifier.ExpressionEvaluatorIdentifyExpressionComponentsParenthesisValidationError, new InvalidExpressionException(Messages.ExpressionEvaluator_ExpressionParenthesisValidationError, expression));
+                    if (suppressValidationError)
+                    {
+                        Logger.Instance.WriteVerbose(EventIdentifier.ExpressionEvaluatorIdentifyExpressionComponentsParenthesisValidationError, Messages.ExpressionEvaluator_ExpressionParenthesisValidationError, expression);
+                        return components;
+                    }
+                    else
+                    {
+                        throw Logger.Instance.ReportError(EventIdentifier.ExpressionEvaluatorIdentifyExpressionComponentsParenthesisValidationError, new InvalidExpressionException(Messages.ExpressionEvaluator_ExpressionParenthesisValidationError, expression));
+                    }
                 }
 
                 // The function expression could contain + characters which are wrapped in quotations
@@ -546,6 +572,16 @@ private static ArrayList IdentifyExpressionComponents(string expression)
             }
         }
 
+        /// <summary>
+        /// Identifies the expression components.
+        /// </summary>
+        /// <param name="expression">The expression.</param>
+        /// <returns>The ArrayList of expression components.</returns>
+        private static ArrayList IdentifyExpressionComponents(string expression)
+        {
+            return IdentifyExpressionComponents(expression, false);
+        }
+
         /// <summary>
         /// Escapes the string.
         /// A string is escaped by removing the quotation marks at its start and finish and

src/WorkflowActivityLibrary/Common/ExpressionFunction.cs

@@ -2500,7 +2500,7 @@ private object DateTimeToFileTimeUtc()
         }
 
         /// <summary>
-        /// This function is used to convert a date to the local time or specifed time zone.
+        /// This function is used to convert a date to the local time or specified time zone.
         /// Function Syntax: DateTimeUtcToLocalTime(date:DateTime [, TimeZoneId])
         /// </summary>
         /// <returns>The value of the specified UTC date expressed in the local time or specified time zone.</returns>
@@ -2848,7 +2848,6 @@ private int IndexByValue()
                                 index += 1;
                             }
                         }
-
                     }
 
                     Logger.Instance.WriteVerbose(EventIdentifier.ExpressionFunctionIndexByValue, "IndexByValue('{0}', '{1}') returned '{2}'.", this.parameters[0], this.parameters[1], result);