Removes booting.aspx and creates embedded html pages for booting and failed (if those are ever seen ), renames some classes and namespaces, removes old cdf bundle classes

src/Umbraco.Web/JavaScript/ClientDependencyConfiguration.cs

@@ -0,0 +1,144 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Security.Cryptography;
+using System.Text;
+using System.Web;
+using System.Xml.Linq;
+using ClientDependency.Core.CompositeFiles.Providers;
+using ClientDependency.Core.Config;
+using Semver;
+using Umbraco.Core.IO;
+using Umbraco.Core.Logging;
+
+namespace Umbraco.Web.JavaScript
+{
+    /// <summary>
+    /// A utility class for working with CDF config and cache files - use sparingly!
+    /// </summary>
+    public class ClientDependencyConfiguration
+    {
+        private readonly ILogger _logger;
+        private readonly string _fileName;
+
+        public ClientDependencyConfiguration(ILogger logger)
+        {
+            if (logger == null) throw new ArgumentNullException("logger");
+            _logger = logger;
+            _fileName = IOHelper.MapPath(string.Format("{0}/ClientDependency.config", SystemDirectories.Config));
+        }
+        
+        /// <summary>
+        /// Changes the version number in ClientDependency.config to a hashed value for the version and the DateTime.Day
+        /// </summary>
+        /// <param name="version">The <see cref="SemVersion">version</see> of Umbraco we're upgrading to</param>
+        /// <param name="date">A <see cref="DateTime">date</see> value to use in the hash to prevent this method from updating the version on each startup</param>
+        /// <param name="dateFormat">Allows the developer to specify the <see cref="string">date precision</see> for the hash (i.e. "yyyyMMdd" would be a precision for the day)</param>
+        /// <returns>Boolean to indicate successful update of the ClientDependency.config file</returns>
+        public bool UpdateVersionNumber(SemVersion version, DateTime date, string dateFormat)
+        {
+            var byteContents = Encoding.Unicode.GetBytes(version + date.ToString(dateFormat));
+            
+            //This is a way to convert a string to a long
+            //see https://www.codeproject.com/Articles/34309/Convert-String-to-bit-Integer
+            //We could much more easily use MD5 which would create us an INT but since that is not compliant with
+            //hashing standards we have to use SHA
+            int intHash;
+            using (var hash = SHA256.Create())
+            {
+                var bytes = hash.ComputeHash(byteContents);
+
+                var longResult = new[] { 0, 8, 16, 24 }
+                    .Select(i => BitConverter.ToInt64(bytes, i))
+                    .Aggregate((x, y) => x ^ y);
+
+                //CDF requires an INT, and although this isn't fail safe, it will work for our purposes. We are not hashing for crypto purposes
+                //so there could be some collisions with this conversion but it's not a problem for our purposes
+                //It's also important to note that the long.GetHashCode() implementation in .NET is this: return (int) this ^ (int) (this >> 32);
+                //which means that this value will not change per AppDomain like some GetHashCode implementations.
+                intHash = longResult.GetHashCode();
+            }
+
+            try
+            {
+                var clientDependencyConfigXml = XDocument.Load(_fileName, LoadOptions.PreserveWhitespace);
+                if (clientDependencyConfigXml.Root != null)
+                {
+
+                    var versionAttribute = clientDependencyConfigXml.Root.Attribute("version");
+
+                    //Set the new version to the hashcode of now
+                    var oldVersion = versionAttribute.Value;
+                    var newVersion = Math.Abs(intHash).ToString();
+
+                    //don't update if it's the same version
+                    if (oldVersion == newVersion)
+                        return false;
+
+                    versionAttribute.SetValue(newVersion);
+                    clientDependencyConfigXml.Save(_fileName, SaveOptions.DisableFormatting);
+
+                    _logger.Info<ClientDependencyConfiguration>("Updated version number from {OldVersion} to {NewVersion}", oldVersion, newVersion);
+                    return true;
+                }
+            }
+            catch (Exception ex)
+            {
+                _logger.Error<ClientDependencyConfiguration>(ex, "Couldn't update ClientDependency version number");
+            }
+
+            return false;
+        }
+
+        /// <summary>
+        /// Clears the temporary files stored for the ClientDependency folder
+        /// </summary>
+        /// <param name="currentHttpContext"></param>
+        public bool ClearTempFiles(HttpContextBase currentHttpContext)
+        {
+            var cdfTempDirectories = new HashSet<string>();
+            foreach (BaseCompositeFileProcessingProvider provider in ClientDependencySettings.Instance
+                .CompositeFileProcessingProviderCollection)
+            {
+                var path = provider.CompositeFilePath.FullName;
+                cdfTempDirectories.Add(path);
+            }
+
+            try
+            {
+                var fullPath = currentHttpContext.Server.MapPath(XmlFileMapper.FileMapDefaultFolder);
+                if (fullPath != null)
+                {
+                    cdfTempDirectories.Add(fullPath);
+                }
+            }
+            catch (Exception ex)
+            {
+                //invalid path format or something... try/catch to be safe
+                _logger.Error<ClientDependencyConfiguration>(ex, "Could not get path from ClientDependency.config");
+            }
+
+            var success = true;
+            foreach (var directory in cdfTempDirectories)
+            {
+                var directoryInfo = new DirectoryInfo(directory);
+                if (directoryInfo.Exists == false)
+                    continue;
+
+                try
+                {
+                    directoryInfo.Delete(true);
+                }
+                catch (Exception ex)
+                {
+                    // Something could be locking the directory or the was another error, making sure we don't break the upgrade installer
+                    _logger.Error<ClientDependencyConfiguration>(ex, "Could not clear temp files");
+                    success = false;
+                }
+            }
+
+            return success;
+        }
+    }
+}