/// <summary>
/// Returns a copy of this instance, setting its category and locale to the specified values.
/// </summary>
/// <param name="category">The category to set on the resulting instance.</param>
/// <param name="locale">The locale to set on the resulting instance.</param>
/// <returns>A <see cref="SageContext"/> copy of this instance, with its category and locale set to the
/// specified <paramref name="category"/> and <paramref name="locale"/>.</returns>
internal SageContext Copy(string category, string locale)
{
SageContext result = new SageContext(this);
result.Category = category;
result.Locale = locale;
return result;
}
internal static XmlNode ProcessSageBaseHrefElement(SageContext context, XmlNode node)
{
Contract.Requires<ArgumentNullException>(node != null);
if (node.SelectSingleElement("ancestor::sage:literal", XmlNamespaces.Manager) != null)
return node;
XmlElement result = node.OwnerDocument.CreateElement("base", XmlNamespaces.XHtmlNamespace);
result.SetAttribute("href", context.BaseHref);
return result;
}
internal static XmlNode ProcessSageUrlElement(SageContext context, XmlNode node)
{
Contract.Requires<ArgumentNullException>(node != null);
if (node.SelectSingleElement("ancestor::sage:literal", XmlNamespaces.Manager) != null)
return node;
string linkHref = context.Url.GetUrl((XmlElement) node);
if (!string.IsNullOrEmpty(linkHref))
{
if (node.NodeType == XmlNodeType.Element)
return node.OwnerDocument.CreateTextNode(linkHref);
}
return node;
}
internal static string GetLinkFunction(SageContext context, params string[] arguments)
{
var linkArguments = new LinkArguments(arguments, true, "encode", "absolute");
var qualify = linkArguments.Switches["absolute"];
var result = context.Url.GetUrl(linkArguments.LinkName, linkArguments.QueryString, linkArguments.HashString, qualify);
if (linkArguments.Switches["encode"] && !string.IsNullOrEmpty(result))
result = HttpUtility.UrlEncode(result);
return result;
}
internal static string GetSelfFunction(SageContext context, params string[] arguments)
{
var linkArguments = new LinkArguments(arguments, false, "encode", "absolute");
var currentUrl = linkArguments.Switches["absolute"]
? context.Url.RawUrl
: context.Url.RawPathAndQuery;
var paramQuery = new QueryString(parameterSeparators);
if (currentUrl.Contains("?"))
{
var questionIndex = currentUrl.IndexOf("?", StringComparison.Ordinal);
paramQuery.Parse(currentUrl.Substring(questionIndex + 1));
currentUrl = currentUrl.Substring(0, questionIndex);
}
paramQuery.Merge(linkArguments.QueryString);
var result = string.Concat(currentUrl, paramQuery.ToString("?"), string.IsNullOrEmpty(linkArguments.HashString)
? string.Empty
: string.Concat("#", linkArguments.HashString));
if (linkArguments.Switches["encode"] && !string.IsNullOrEmpty(result))
result = HttpUtility.UrlEncode(result);
return result;
}
/// <summary>
/// Starts this instance.
/// </summary>
/// <param name="context">The context.</param>
protected static void Start(SageContext context)
{
Project.IsStarted = true;
}
/// <summary>
/// Handles the Error event of the Application control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="System.EventArgs"/> instance containing the event data.</param>
protected virtual void Application_Error(object sender, EventArgs e)
{
Exception exception = this.Server.GetLastError();
if (exception == null)
return;
if (exception is ThreadAbortException)
return;
log.Fatal(exception.Message, exception);
StringBuilder html = new StringBuilder();
TextWriter writer = new StringWriter(html);
SageContext context = new SageContext(this.Context);
SageException sageException = SageHelpException.Create(exception);
if (((SageHelpException) sageException).Problem.Type == ProblemType.Unknown)
sageException = exception is SageHelpException
? (SageHelpException) exception
: new SageException(exception);
if (this.IsRequestAvailable)
{
sageException.Render(writer, context);
}
else
{
sageException.RenderWithoutContext(writer);
}
writer.Close();
writer.Dispose();
this.Response.ContentType = "text/html";
this.Response.Write(html.ToString());
this.Response.Cache.SetCacheability(HttpCacheability.NoCache);
this.Response.Cache.SetNoStore();
this.Response.End();
}
internal static string IIf(SageContext context, params string[] arguments)
{
if (arguments.Length < 3)
return string.Empty;
string condition = context.textEvaluator.Process(arguments[0]);
string result1 = arguments[1];
string result2 = arguments[2];
return !string.IsNullOrWhiteSpace(condition) ? result1 : result2;
}
internal static string IsNull(SageContext context, params string[] arguments)
{
if (arguments.Length < 2)
return string.Empty;
string result1 = arguments[0];
string result2 = arguments[1];
return !string.IsNullOrWhiteSpace(result1) ? result1 : result2;
}
internal static string GetSessionParam(SageContext context, params string[] arguments)
{
if (arguments.Length == 0)
return string.Empty;
return context.Session[arguments[0]] as string;
}
internal static string GetVariable(SageContext context, params string[] arguments)
{
if (arguments.Length < 1)
return string.Empty;
string name = arguments[0];
string locale = arguments.Length < 2 ? null : arguments[1];
return context.GetProjectVariable(name, locale);
}
internal static string GetRequestParam(SageContext context, params string[] arguments)
{
if (arguments.Length == 0)
return string.Empty;
return context.Request[arguments[0]];
}
/// <summary>
/// Initializes a new instance of the <see cref="SageContext"/> class, using an existing context instance.
/// </summary>
/// <param name="context">An existing <see cref="SageContext"/> to use to initialize this instance.</param>
/// <param name="pathMapper">The function to use for resolving relative paths.</param>
/// <param name="config">The project configuration to use with this context instance.</param>
public SageContext(SageContext context, ProjectConfiguration config = null, Func<string, string> pathMapper = null)
: this(context, context.Category, config)
{
if (pathMapper != null)
this.pathMapper = pathMapper;
}
private static string GetContextProperty(SageContext context, string propName, string propKey)
{
const BindingFlags BindingFlags =
BindingFlags.IgnoreCase |
BindingFlags.Public |
BindingFlags.Instance |
BindingFlags.Static;
PropertyInfo property = context.GetType().GetProperty(propName, BindingFlags);
if (property == null)
{
log.ErrorFormat(
"Property name '{0}' is invalid. Please make sure the name matches a property of SageContext",
propName);
return null;
}
object value = property.GetValue(context, null);
if (value != null)
{
if (!string.IsNullOrEmpty(propKey))
{
if (value is NameValueCollection)
return ((NameValueCollection) value)[propKey];
object subProperty = value.GetType().GetProperty(propKey, BindingFlags);
if (subProperty != null)
{
return subProperty.ToString();
}
log.ErrorFormat(
"The context property '{0}' is not a NameValue collection and it doesn't have a property named '{1}'.",
propName, propKey);
return null;
}
return value.ToString();
}
return null;
}
/// <summary>
/// Initializes the application using the specified project configuration instance.
/// </summary>
/// <param name="context">The context in which this method is being executed.</param>
internal static void Initialize(SageContext context)
{
ViewEngines.Engines.Clear();
ViewEngines.Engines.Add(new XsltViewEngine());
ViewEngines.Engines.Add(new WebFormViewEngine());
Project.InitializeConfiguration(context);
//// The routes need to be re-registered after the assemblies get updated
Project.AssembliesUpdated += (sender, args) => Project.RegisterRoutes();
Project.RegisterRoutes();
var controller = Project.Configuration.Routing.DefaultController;
var action = Project.Configuration.Routing.DefaultAction;
var routeName = string.Format("{0}.{1}", controller, action);
log.DebugFormat("Manually registering route '*' to {0}", routeName);
RouteTable.Routes.MapRouteLowercase(
routeName,
"{*path}",
new Dictionary<string, object> { { "controller", controller.Replace("Controller", string.Empty) }, { "action", action } });
projectIsReady = true;
}
internal static XmlNode ProcessBaseHrefNode(SageContext context, XmlNode node)
{
if (node.SelectSingleElement("ancestor::sage:literal", XmlNamespaces.Manager) != null)
return node;
XmlElement result = node.OwnerDocument.CreateElement("base", XmlNamespaces.XHtmlNamespace);
result.SetAttribute("href", context.BaseHref);
return result;
}
internal static SageContext InitializeConfiguration(SageContext context)
{
string projectConfigPathBinDir = Path.Combine(Project.AssemblyCodeBaseDirectory, ProjectConfiguration.ProjectConfigName);
string projectConfigPathProjDir = Path.Combine(Project.AssemblyCodeBaseDirectory, "..\\" + ProjectConfiguration.ProjectConfigName);
string projectConfigPath = projectConfigPathBinDir;
if (File.Exists(projectConfigPathProjDir))
{
projectConfigPath = projectConfigPathProjDir;
}
var projectConfig = ProjectConfiguration.Create();
if (!File.Exists(projectConfigPath))
{
log.Warn("Project configuration file not found; configuration initialized with default values");
return new SageContext(context);
}
installOrder = new List<string>();
extensions = new OrderedDictionary<string, ExtensionInfo>();
if (File.Exists(projectConfigPath))
projectConfig.Parse(projectConfigPath);
if (projectConfig.Locales.Count == 0)
{
var defaultLocale = new LocaleInfo();
projectConfig.Locales.Add(defaultLocale.Name, defaultLocale);
}
var result = projectConfig.ValidationResult;
if (!result.Success)
{
initializationError = result.Exception;
initializationProblemInfo = new ProblemInfo(ProblemType.ProjectSchemaValidationError, result.SourceFile);
}
else
{
configuration = projectConfig;
// this will ensure the new context uses the just
// created configuration immediately
context = new SageContext(context);
var extensionManager = new ExtensionManager();
try
{
extensionManager.Initialize(context);
}
catch (ProjectInitializationException ex)
{
initializationError = ex;
initializationProblemInfo = new ProblemInfo(ex.Reason, ex.SourceFile);
if (ex.Reason == ProblemType.MissingExtensionDependency)
{
initializationProblemInfo.InfoBlocks
.Add("Dependencies", ex.Dependencies.ToDictionary(name => name));
}
}
if (initializationError == null)
{
var missingDependencies = projectConfig.Dependencies
.Where(name => extensionManager.Count(ex => ex.Name.Equals(name, StringComparison.InvariantCultureIgnoreCase)) == 0)
.ToList();
var extraDependencies = extensionManager
.Where(extension => projectConfig.Dependencies.Count(name => name.Equals(extension.Name, StringComparison.InvariantCultureIgnoreCase)) == 0)
.ToList();
if (missingDependencies.Count != 0)
{
string errorMessage =
string.Format("Project is missing one or more dependencies ({0}) - installation cancelled.",
string.Join(", ", missingDependencies));
initializationError = new ProjectInitializationException(errorMessage);
initializationProblemInfo = new ProblemInfo(ProblemType.MissingDependency);
initializationProblemInfo.InfoBlocks
.Add("Dependencies", missingDependencies.ToDictionary(name => name));
}
if (extraDependencies.Count != 0)
{
log.WarnFormat("There are additional, unreferenced extensions in the extensions directory: {0}", string.Join(",", extraDependencies));
}
foreach (var name in projectConfig.Dependencies)
{
var extension = extensionManager.First(ex => ex.Name.Equals(name, StringComparison.InvariantCultureIgnoreCase));
installOrder.Add(extension.Config.Id);
Project.RelevantAssemblies.AddRange(extension.Assemblies);
projectConfig.RegisterExtension(extension.Config);
extensions.Add(extension.Config.Id, extension);
}
// fire this event at the end rather than once for each extension
var totalAssemblies = extensionManager.Sum(info => info.Assemblies.Count);
if (totalAssemblies != 0)
{
if (Project.AssembliesUpdated != null)
{
log.DebugFormat("{0} extension assemblies loaded, triggering AssembliesUpdated event", totalAssemblies);
Project.AssembliesUpdated(null, EventArgs.Empty);
}
}
installOrder.Add(projectConfig.Id);
projectConfig.RegisterRoutes();
context.LmCache.Put(ConfigWatchName, DateTime.Now, projectConfig.Files);
}
}
return context;
}
internal static XmlNode ProcessContextIfNode(SageContext context, XmlNode node)
{
if (node.SelectSingleElement("ancestor::sage:literal", XmlNamespaces.Manager) != null)
return node;
XmlElement element = (XmlElement) node;
XmlDocumentFragment result = node.OwnerDocument.CreateDocumentFragment();
string expression = element.GetAttribute("expression");
string propName = element.GetAttribute("property");
string key = element.GetAttribute("key");
string equals = element.GetAttribute("equals");
string notEquals = element.GetAttribute("not-equals");
bool nodeValid = false;
if (!string.IsNullOrWhiteSpace(expression))
{
var text = context.textEvaluator.Process(expression);
nodeValid = !string.IsNullOrWhiteSpace(text);
}
else
{
string propValue = SageContext.GetContextProperty(context, propName, key);
if (notEquals != string.Empty)
nodeValid = !propValue.Equals(notEquals, StringComparison.InvariantCultureIgnoreCase);
else if (equals != string.Empty)
nodeValid = propValue.Equals(equals, StringComparison.InvariantCultureIgnoreCase);
}
if (!nodeValid)
return null;
foreach (XmlNode child in node.SelectNodes("node()"))
result.AppendChild(context.ProcessNode(child));
return result;
}
/// <summary>
/// Handles the BeginRequest event of the Application control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="System.EventArgs"/> instance containing the event data.</param>
protected virtual void Application_BeginRequest(object sender, EventArgs e)
{
if (Thread.CurrentThread.Name == null)
{
Thread.CurrentThread.Name = Project.GenerateThreadId();
log.InfoFormat("Thread name set to {0}", Thread.CurrentThread.Name);
}
if (initializationError != null)
{
StringBuilder html = new StringBuilder();
using (TextWriter writer = new StringWriter(html))
{
SageHelpException helpException = new SageHelpException(initializationProblemInfo, initializationError);
helpException.Render(writer, new SageContext(this.Context));
}
this.Response.Write(html.ToString());
this.Response.Cache.SetCacheability(HttpCacheability.NoCache);
this.Response.Cache.SetNoStore();
this.Response.End();
}
var context = new SageContext(this.Context);
if (context.LmCache.Get(ConfigWatchName) == null)
Project.InitializeConfiguration(context);
if (!Project.IsStarted)
{
lock (lck)
{
if (!Project.IsStarted)
{
Project.Start(context);
}
}
}
if (this.Context != null)
log.InfoFormat("Request {0} started.", HttpContext.Current.Request.Url);
else
log.InfoFormat("Request started (no context)");
}
/// <summary>
/// Initializes a new instance of the <see cref="SageContext"/> class, using an existing context instance.
/// </summary>
/// <param name="context">An existing <see cref="SageContext"/> to use to initialize this instance.</param>
/// <param name="categoryName">The name of the category to set on the new context.</param>
/// <param name="config">The project configuration to use with this context instance.</param>
public SageContext(SageContext context, string categoryName, ProjectConfiguration config = null)
: this(context.HttpContext, config)
{
this.Category = categoryName;
pathMapper = context.MapPath;
}
/// <summary>
/// Initializes a new instance of the <see cref="LastModifiedCache"/> class, using the specified
/// <paramref name="context"/>.
/// </summary>
/// <param name="context">The current context under which this code is being executed.</param>
internal LastModifiedCache(SageContext context)
{
Contract.Requires<ArgumentNullException>(context != null);
this.context = context;
}
internal static XmlNode ProcessContextSwitchNode(SageContext context, XmlNode switchNode)
{
if (switchNode.SelectSingleElement("ancestor::sage:literal", XmlNamespaces.Manager) != null)
return switchNode;
XmlElement switchElem = (XmlElement) switchNode;
string propName = switchElem.GetAttribute("property");
string key = switchElem.GetAttribute("key");
if (string.IsNullOrEmpty(propName))
{
log.ErrorFormat("The switch node in document '{0}' is missing the required property attribute",
switchNode.OwnerDocument.BaseURI);
return switchNode;
}
string propValue = SageContext.GetContextProperty(context, propName, key);
int caseNum = 0;
bool caseFound = false;
XmlDocumentFragment result = switchNode.OwnerDocument.CreateDocumentFragment();
foreach (XmlElement caseNode in switchNode.SelectNodes("context:case", XmlNamespaces.Manager))
{
string testValue = caseNode.GetAttribute("test");
if (string.IsNullOrEmpty(testValue))
{
log.WarnFormat(
"The case node with index {0} of switch node '{1}' in document '{2}' didn't specify a test condition.",
caseNum, propName, switchNode.OwnerDocument.BaseURI);
continue;
}
if (testValue.Equals(propValue, StringComparison.InvariantCultureIgnoreCase))
{
foreach (XmlNode node in caseNode.SelectNodes("node()"))
result.AppendChild(context.ProcessNode(node));
caseFound = true;
break;
}
caseNum += 1;
}
if (!caseFound)
{
XmlNode defaultNode = switchNode.SelectSingleNode("context:default", XmlNamespaces.Manager);
if (defaultNode != null)
{
foreach (XmlNode node in defaultNode.SelectNodes("node()"))
result.AppendChild(context.ProcessNode(node));
}
}
return result;
}
internal static string GetProjectLinkFunction(SageContext context, params string[] arguments)
{
var linkArguments = new LinkArguments(arguments, false, "encode", "absolute", "pretty");
var result = linkArguments.Switches["absolute"]
? context.Url.ApplicationRoot
: context.Request.ApplicationPath;
if (linkArguments.Switches["encode"] && !string.IsNullOrEmpty(result))
result = HttpUtility.UrlEncode(result);
return result + (result.EndsWith("/") ? string.Empty : "/");
}
/// <summary>
/// Renders the exception to the specified <paramref name="writer"/>
/// </summary>
/// <param name="writer">The writer to render the exception to.</param>
/// <param name="context">The context under which this code is executing.</param>
public virtual void Render(TextWriter writer, SageContext context)
{
Contract.Requires<ArgumentNullException>(context != null);
Contract.Requires<ArgumentNullException>(writer != null);
XmlDocument document = new XmlDocument();
XmlElement documentElement = document.AppendElement(this.ConvertToXml(this.Exception, document));
Exception inner = this.Exception.InnerException;
while (inner != null)
{
documentElement.AppendChild(this.ConvertToXml(inner, document));
inner = inner.InnerException;
}
documentElement.AppendChild(context.ToXml(document));
documentElement.SetAttribute("date", DateTime.Now.ToString("dd-MM-yyyy"));
documentElement.SetAttribute("time", DateTime.Now.ToString("hh:mm:ss"));
XsltTransform processor = XsltTransform.Create(context, this.StylesheetPath);
XmlWriter xmlwr = XmlWriter.Create(writer, processor.OutputSettings);
processor.Transform(documentElement, xmlwr, context, this.GetTransformArguments(context));
}
internal static XmlNode ProcessHrefAttribute(SageContext context, XmlNode node)
{
Contract.Requires<ArgumentNullException>(node != null);
if (node.SelectSingleElement("ancestor::sage:literal", XmlNamespaces.Manager) != null)
return node;
node.InnerText = context.ProcessText(node.InnerText);
return node;
}
/// <summary>
/// Gets the XSLT arguments to use with the transform.
/// </summary>
/// <param name="context">The current context.</param>
/// <returns>The XSLT arguments to use with this transform</returns>
protected virtual Dictionary<string, object> GetTransformArguments(SageContext context)
{
Dictionary<string, object> arguments = new Dictionary<string, object>();
arguments.Add("developer", context.IsDeveloperRequest ? 1 : 0);
return arguments;
}
internal static XmlNode ProcessSageLinkElement(SageContext context, XmlNode node)
{
Contract.Requires<ArgumentNullException>(node != null);
if (node.SelectSingleElement("ancestor::sage:literal", XmlNamespaces.Manager) != null)
return node;
XmlElement linkElem = (XmlElement) node;
string linkName = context.ProcessText(linkElem.GetAttribute("ref"));
bool rawString = linkElem.GetAttribute("raw").EqualsAnyOf("1", "yes", "true");
if (!string.IsNullOrEmpty(linkName) && rawString)
{
if (context.Url.Links.ContainsKey(linkName))
{
linkElem.InnerText = context.Url.Links[linkName].Value;
}
return linkElem;
}
string linkHref = context.Url.GetUrl(linkElem);
if (!string.IsNullOrEmpty(linkHref))
{
linkElem.SetAttribute("href", linkHref);
}
foreach (XmlNode child in node.ChildNodes)
{
XmlNode processed = NodeEvaluator.GetNodeHandler(child)(context, child);
if (processed != null)
node.ReplaceChild(processed, child);
else
node.RemoveChild(child);
}
return linkElem;
}
internal static Dictionary<string, string> GetVirtualDirectories(SageContext context)
{
Dictionary<string, string> virtualDirectories = new Dictionary<string, string>();
try
{
string serverRootPath = context.MapPath("/").ToLower().TrimEnd('\\');
using (DirectoryEntry iis = new DirectoryEntry("IIS://Localhost/w3svc"))
{
IEnumerable<DirectoryEntry> websites = iis.Children.Cast<DirectoryEntry>()
.Where(c => c.SchemaClassName == "IIsWebServer");
foreach (DirectoryEntry website in websites)
{
using (website)
{
DirectoryEntry root = website.Children.Find("Root", "IIsWebVirtualDir");
string sitePath = root.Properties["path"].Value.ToString().ToLower().TrimEnd('\\');
if (sitePath == serverRootPath)
{
virtualDirectories = Project.GetVirtualDirectories(root, string.Empty);
break;
}
}
}
}
}
catch (Exception ex)
{
log.ErrorFormat("Could not retrieve virtual directories in the current application's web server: {0}", ex.Message);
}
return virtualDirectories;
}
/// <summary>
/// Initializes a new instance of the <see cref="UrlGenerator"/> class, using the specified <paramref name="context"/>.
/// </summary>
/// <param name="context">The current <see cref="SageContext"/>.</param>
public UrlGenerator(SageContext context)
{
this.context = context;
}
internal static string ResolvePathVariable(SageContext context, string variable)
{
switch (variable.ToLower())
{
case "apppath":
return context.ApplicationPath;
case "locale":
return context.Locale;
case "basehref":
return context.BaseHref;
case "category":
return context.Category;
case "assetpath":
return context.Path.GetRelativeWebPath(context.Path.AssetPath);
case "sharedassetpath":
return context.Path.GetRelativeWebPath(context.Path.SharedAssetPath);
case "modulepath":
return context.Path.GetRelativeWebPath(context.Path.ModulePath);
}
return variable;
}
