internal string DefaultExtractValueFunc()

in src/Microsoft.ServiceFabric.AspNetCore.Configuration/ServiceFabricConfigurationOptions.cs [111:136]

• 21 lines of code
• 3 McCabe index (conditional complexity)

        internal string DefaultExtractValueFunc(FabricConfigurationSection section, ConfigurationProperty property)
        {
            // see https://github.com/Azure/service-fabric-aspnetcore/issues/9
            // A typical safety guideline is to keep encrypted string encrypted in memory, and then decrypt (briefly) at time of use.
            // With this reason, will treat encrypted value the same as plain text by default,
            // user will need to handle encrypted string separately to compliant with security best practice.
            if (property.IsEncrypted && this.DecryptValue)
            {
                IntPtr unmanagedString = IntPtr.Zero;
                var secureString = property.DecryptValue();

                try
                {
                    unmanagedString = Marshal.SecureStringToGlobalAllocUnicode(secureString);
                    return Marshal.PtrToStringUni(unmanagedString);
                }
                finally
                {
                    Marshal.ZeroFreeGlobalAllocUnicode(unmanagedString);
                }
            }
            else
            {
                return property.Value;
            }
        }