| 1 | // Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information. |
| 2 | |
| 3 | namespace WixToolset.Core.WindowsInstaller.Bind |
| 4 | { |
| 5 | using System; |
| 6 | using System.Collections.Generic; |
| 7 | using System.IO; |
| 8 | using System.Linq; |
| 9 | using WixToolset.Core.Native; |
| 10 | using WixToolset.Data; |
| 11 | using WixToolset.Extensibility; |
| 12 | using WixToolset.Extensibility.Data; |
| 13 | using WixToolset.Extensibility.Services; |
| 14 | |
| 15 | internal class CabinetResolver |
| 16 | { |
| 17 | public CabinetResolver(IServiceProvider serviceProvider, string cabCachePath, IEnumerable<IWindowsInstallerBackendBinderExtension> backendExtensions) |
| 18 | { |
| 19 | this.ServiceProvider = serviceProvider; |
| 20 | |
| 21 | this.CabCachePath = cabCachePath; |
| 22 | |
| 23 | this.BackendExtensions = backendExtensions; |
| 24 | } |
| 25 | |
| 26 | private IServiceProvider ServiceProvider { get; } |
| 27 | |
| 28 | private string CabCachePath { get; } |
| 29 | |
| 30 | private IEnumerable<IWindowsInstallerBackendBinderExtension> BackendExtensions { get; } |
| 31 | |
| 32 | public IResolvedCabinet ResolveCabinet(string cabinetPath, IEnumerable<IFileFacade> fileFacades) |
| 33 | { |
| 34 | var filesWithPath = fileFacades.Select(this.CreateBindFileWithPath).ToList(); |
| 35 | |
| 36 | IResolvedCabinet resolved = null; |
| 37 | |
| 38 | foreach (var extension in this.BackendExtensions) |
| 39 | { |
| 40 | resolved = extension.ResolveCabinet(cabinetPath, filesWithPath); |
| 41 | |
| 42 | if (null != resolved) |
| 43 | { |
| 44 | return resolved; |
| 45 | } |
| 46 | } |
| 47 | |
| 48 | // By default cabinet should be built and moved to the suggested location. |
| 49 | resolved = this.ServiceProvider.GetService<IResolvedCabinet>(); |
| 50 | resolved.BuildOption = CabinetBuildOption.BuildAndMove; |
| 51 | resolved.Path = cabinetPath; |
| 52 | |
| 53 | // If a cabinet cache path was provided, change the location for the cabinet |
| 54 | // to be built to and check if there is a cabinet that can be reused. |
| 55 | if (!String.IsNullOrEmpty(this.CabCachePath)) |
| 56 | { |
| 57 | var cabinetName = Path.GetFileName(cabinetPath); |
| 58 | resolved.Path = Path.Combine(this.CabCachePath, cabinetName); |
| 59 | |
| 60 | if (CheckFileExists(resolved.Path)) |
| 61 | { |
| 62 | // Assume that none of the following are true: |
| 63 | // 1. any files are added or removed |
| 64 | // 2. order of files changed or names changed |
| 65 | // 3. modified time changed |
| 66 | var cabinetValid = true; |
| 67 | |
| 68 | var cabinet = new Cabinet(resolved.Path); |
| 69 | var fileList = cabinet.Enumerate(); |
| 70 | |
| 71 | if (filesWithPath.Count() != fileList.Count) |
| 72 | { |
| 73 | cabinetValid = false; |
| 74 | } |
| 75 | else |
| 76 | { |
| 77 | var i = 0; |
| 78 | foreach (var file in filesWithPath) |
| 79 | { |
| 80 | // First check that the file identifiers match because that is quick and easy. |
| 81 | var cabFileInfo = fileList[i]; |
| 82 | cabinetValid = (cabFileInfo.FileId == file.Id); |
| 83 | if (cabinetValid) |
| 84 | { |
| 85 | // Still valid so ensure the file sizes are the same. |
| 86 | var fileInfo = new FileInfo(file.Path); |
| 87 | cabinetValid = (cabFileInfo.Size == fileInfo.Length); |
| 88 | if (cabinetValid) |
| 89 | { |
| 90 | // Still valid so ensure the source time stamp hasn't changed. |
| 91 | cabinetValid = cabFileInfo.SameAsDateTime(fileInfo.LastWriteTime); |
| 92 | } |
| 93 | } |
| 94 | |
| 95 | if (!cabinetValid) |
| 96 | { |
| 97 | break; |
| 98 | } |
| 99 | |
| 100 | i++; |
| 101 | } |
| 102 | } |
| 103 | |
| 104 | resolved.BuildOption = cabinetValid ? CabinetBuildOption.Copy : CabinetBuildOption.BuildAndCopy; |
| 105 | } |
| 106 | } |
| 107 | |
| 108 | return resolved; |
| 109 | } |
| 110 | |
| 111 | private IBindFileWithPath CreateBindFileWithPath(IFileFacade facade) |
| 112 | { |
| 113 | var result = this.ServiceProvider.GetService<IBindFileWithPath>(); |
| 114 | result.Id = facade.Id; |
| 115 | result.Path = facade.SourcePath; |
| 116 | |
| 117 | return result; |
| 118 | } |
| 119 | |
| 120 | private static bool CheckFileExists(string path) |
| 121 | { |
| 122 | try |
| 123 | { |
| 124 | return File.Exists(path); |
| 125 | } |
| 126 | catch (ArgumentException) |
| 127 | { |
| 128 | throw new WixException(ErrorMessages.IllegalCharactersInPath(path)); |
| 129 | } |
| 130 | } |
| 131 | } |
| 132 | } |