(#770) Provide ability to "see" saved installation parameters

Source/ChocolateyGui.Common.Windows/ChocolateyGui.Common.Windows.csproj

@@ -230,6 +230,8 @@
     <Compile Include="Services\DialogService.cs" />
     <Compile Include="Services\IDialogService.cs" />
     <Compile Include="Utilities\ChocolateyMessageBox.cs" />
+    <Compile Include="Services\IPackageArgumentsService.cs" />
+    <Compile Include="Services\PackageArgumentsService.cs" />
     <Compile Include="Utilities\ToolTipBehavior.cs" />
     <Compile Include="Bootstrapper.cs" />
     <Compile Include="Commands\CommandExecutionManager.cs" />

Source/ChocolateyGui.Common.Windows/Services/IPackageArgumentsService.cs

@@ -0,0 +1,16 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright company="Chocolatey" file="IPackageArgumentsService.cs">
+//   Copyright 2017 - Present Chocolatey Software, LLC
+//   Copyright 2014 - 2017 Rob Reynolds, the maintainers of Chocolatey, and RealDimensions Software, LLC
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+
+using System.Collections.Generic;
+
+namespace ChocolateyGui.Common.Windows.Services
+{
+    public interface IPackageArgumentsService
+    {
+        IEnumerable<string> DecryptPackageArgumentsFile(string id, string version);
+    }
+}

Source/ChocolateyGui.Common.Windows/Services/PackageArgumentsService.cs

@@ -0,0 +1,102 @@
+// --------------------------------------------------------------------------------------------------------------------
+// <copyright company="Chocolatey" file="PackageArgumentsService.cs">
+//   Copyright 2017 - Present Chocolatey Software, LLC
+//   Copyright 2014 - 2017 Rob Reynolds, the maintainers of Chocolatey, and RealDimensions Software, LLC
+// </copyright>
+// --------------------------------------------------------------------------------------------------------------------
+
+using System;
+using System.Collections.Generic;
+using chocolatey;
+using chocolatey.infrastructure.adapters;
+using chocolatey.infrastructure.app.utility;
+using ChocolateyGui.Common.Properties;
+using ChocolateyGui.Common.Providers;
+using IFileSystem = chocolatey.infrastructure.filesystem.IFileSystem;
+using ILogger = Serilog.ILogger;
+
+namespace ChocolateyGui.Common.Windows.Services
+{
+    public class PackageArgumentsService : IPackageArgumentsService
+    {
+        private static readonly ILogger Logger = Serilog.Log.ForContext<PackageArgumentsService>();
+        private readonly IEncryptionUtility _encryptionUtility;
+        private readonly IFileSystem _fileSystem;
+        private readonly IChocolateyConfigurationProvider _chocolateyConfigurationProvider;
+        private readonly IDialogService _dialogService;
+
+        public PackageArgumentsService(
+            IEncryptionUtility encryptionUtility,
+            IFileSystem fileSystem,
+            IChocolateyConfigurationProvider chocolateyConfigurationProvider,
+            IDialogService dialogService)
+        {
+            _encryptionUtility = encryptionUtility;
+            _fileSystem = fileSystem;
+            _chocolateyConfigurationProvider = chocolateyConfigurationProvider;
+            _dialogService = dialogService;
+        }
+
+        public IEnumerable<string> DecryptPackageArgumentsFile(string id, string version)
+        {
+            var argumentsPath = _fileSystem.combine_paths(_chocolateyConfigurationProvider.ChocolateyInstall, ".chocolatey", "{0}.{1}".format_with(id, version));
+            var argumentsFile = _fileSystem.combine_paths(argumentsPath, ".arguments");
+
+            string arguments = string.Empty;
+
+            // Get the arguments decrypted in here and return them
+            try
+            {
+                if (_fileSystem.file_exists(argumentsFile))
+                {
+                    arguments = _fileSystem.read_file(argumentsFile);
+                }
+            }
+            catch (Exception ex)
+            {
+                var message = Resources.Application_PackageArgumentsError.format_with(version, id);
+                Logger.Error(ex, message);
+            }
+
+            if (string.IsNullOrEmpty(arguments))
+            {
+                _dialogService.ShowMessageAsync(
+                    string.Empty,
+                    Resources.PackageView_UnableToFindArgumentsFile.format_with(version, id));
+                yield break;
+            }
+
+            // The following code is borrowed from the Chocolatey codebase, should
+            // be extracted to a separate location in choco executable so we can re-use it.
+            var packageArgumentsUnencrypted = arguments.contains(" --") && arguments.to_string().Length > 4
+                ? arguments
+                : _encryptionUtility.decrypt_string(arguments);
+
+            var sensitiveArgs = ArgumentsUtility.arguments_contain_sensitive_information(packageArgumentsUnencrypted);
+
+            var packageArgumentsSplit =
+                packageArgumentsUnencrypted.Split(new[] { " --" }, StringSplitOptions.RemoveEmptyEntries);
+
+            foreach (var packageArgument in packageArgumentsSplit.or_empty_list_if_null())
+            {
+                var packageArgumentSplit =
+                    packageArgument.Split(new[] { '=' }, 2, StringSplitOptions.RemoveEmptyEntries);
+                var optionName = packageArgumentSplit[0].to_string();
+                var optionValue = string.Empty;
+
+                if (packageArgumentSplit.Length == 2)
+                {
+                    optionValue = packageArgumentSplit[1].to_string().remove_surrounding_quotes();
+                    if (optionValue.StartsWith("'"))
+                    {
+                        optionValue.remove_surrounding_quotes();
+                    }
+                }
+
+                yield return "--{0}{1}".format_with(
+                    optionName,
+                    string.IsNullOrWhiteSpace(optionValue) ? string.Empty : "=" + optionValue);
+            }
+        }
+    }
+}

Source/ChocolateyGui.Common.Windows/Startup/ChocolateyGuiModule.cs

@@ -12,9 +12,11 @@
 using AutoMapper;
 using Caliburn.Micro;
 using chocolatey;
+using chocolatey.infrastructure.adapters;
 using chocolatey.infrastructure.app.configuration;
 using chocolatey.infrastructure.app.nuget;
 using chocolatey.infrastructure.app.services;
+using chocolatey.infrastructure.cryptography;
 using chocolatey.infrastructure.filesystem;
 using chocolatey.infrastructure.services;
 using ChocolateyGui.Common.Models;
@@ -48,6 +50,8 @@ protected override void Load(ContainerBuilder builder)
             builder.RegisterType<ChocolateyConfigurationProvider>().As<IChocolateyConfigurationProvider>().SingleInstance();
             builder.RegisterType<ChocolateyService>().As<IChocolateyService>().SingleInstance();
             builder.RegisterType<DotNetFileSystem>().As<chocolatey.infrastructure.filesystem.IFileSystem>().SingleInstance();
+            builder.RegisterType<PackageArgumentsService>().As<IPackageArgumentsService>().SingleInstance();
+            builder.RegisterType<DefaultEncryptionUtility>().As<IEncryptionUtility>().SingleInstance();
 
             // Register ViewModels
             builder.RegisterAssemblyTypes(viewModelAssembly)

Source/ChocolateyGui.Common.Windows/ViewModels/Items/PackageViewModel.cs

@@ -1,4 +1,4 @@
-// --------------------------------------------------------------------------------------------------------------------
+// --------------------------------------------------------------------------------------------------------------------
 // <copyright company="Chocolatey" file="PackageViewModel.cs">
 //   Copyright 2017 - Present Chocolatey Software, LLC
 //   Copyright 2014 - 2017 Rob Reynolds, the maintainers of Chocolatey, and RealDimensions Software, LLC
@@ -7,9 +7,11 @@
 
 using System;
 using System.Diagnostics;
+using System.Linq;
 using System.Threading.Tasks;
 using AutoMapper;
 using Caliburn.Micro;
+using chocolatey;
 using ChocolateyGui.Common.Base;
 using ChocolateyGui.Common.Models;
 using ChocolateyGui.Common.Models.Messages;
@@ -46,6 +48,7 @@ public class PackageViewModel :
         private readonly IChocolateyGuiCacheService _chocolateyGuiCacheService;
         private readonly IConfigService _configService;
         private readonly IAllowedCommandsService _allowedCommandsService;
+        private readonly IPackageArgumentsService _packageArgumentsService;
 
         private string[] _authors;
 
@@ -123,7 +126,8 @@ public PackageViewModel(
             IProgressService progressService,
             IChocolateyGuiCacheService chocolateyGuiCacheService,
             IConfigService configService,
-            IAllowedCommandsService allowedCommandsService)
+            IAllowedCommandsService allowedCommandsService,
+            IPackageArgumentsService packageArgumentsService)
         {
             _chocolateyService = chocolateyService;
             _eventAggregator = eventAggregator;
@@ -134,6 +138,7 @@ public PackageViewModel(
             _chocolateyGuiCacheService = chocolateyGuiCacheService;
             _configService = configService;
             _allowedCommandsService = allowedCommandsService;
+            _packageArgumentsService = packageArgumentsService;
         }
 
         public DateTime Created
@@ -422,6 +427,15 @@ public bool IsPackageSizeAvailable
             get { return PackageSize != -1; }
         }
 
+        public async Task ShowArguments()
+        {
+            var decryptedArguments = _packageArgumentsService.DecryptPackageArgumentsFile(Id, Version.ToString()).ToList();
+
+            await _dialogService.ShowMessageAsync(
+                Resources.PackageViewModel_ArgumentsForPackageFormat.format_with(Title),
+                string.Join(Environment.NewLine, decryptedArguments));
+        }
+
         public async Task Install()
         {
             await InstallPackage(Version.ToString());

Source/ChocolateyGui.Common.Windows/Views/PackageView.xaml

@@ -61,6 +61,13 @@
                     VerticalAlignment="Stretch"
                     Background="{DynamicResource MahApps.Brushes.Accent4}">
                 <StackPanel Orientation="Horizontal" HorizontalAlignment="Right" Margin="0,10,20,10">
+                        <Button Padding="10" Margin="5 0"
+                            Command="{commands:DataContextCommandAdapter ShowArguments}">
+                            <StackPanel Orientation="Horizontal">
+                                <iconPacks:PackIconEntypo Kind="Info" Margin="0 0 5 0 " VerticalAlignment="Center" />
+                                <TextBlock Text="{x:Static properties:Resources.PackageView_ButtonPackageArguments}" FontSize="16"/>
+                            </StackPanel>
+                        </Button>
                     <StackPanel Orientation="Horizontal"
                                 Visibility="{Binding IsInstalled, Converter={StaticResource BooleanToVisibility}, ConverterParameter=True}">
                         <Button Padding="10" Margin="5 0"
@@ -183,7 +190,7 @@
                    Target="{Binding ElementName=Version}" />
             <TextBlock x:Name="Version" Text="{Binding Version}"
                        Style="{StaticResource PackageResourceValue}" />
-            
+
             <Label Style="{StaticResource PackageResourceLabel}" Content="{x:Static properties:Resources.PackageView_Downloads}"
                    Target="{Binding ElementName=VersionDownloadCount}"
                    Visibility="{Binding IsDownloadCountAvailable, Converter={StaticResource BoolToVis}}" />