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/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / Services / Web / System / Web / Services / Discovery / DiscoveryDocumentReference.cs / 1305376 / DiscoveryDocumentReference.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Web.Services.Discovery { using System; using System.Net; using System.Xml; using System.Diagnostics; using System.IO; using System.Xml.Serialization; using System.Web.Services.Protocols; using System.Web.Services.Configuration; using System.Text; using System.Globalization; using System.Threading; using System.Collections; using System.Web.Services.Diagnostics; ////// /// [XmlRoot("discoveryRef", Namespace=DiscoveryDocument.Namespace)] public sealed class DiscoveryDocumentReference : DiscoveryReference { private string reference; ///[To be supplied.] ////// /// public DiscoveryDocumentReference() { } ///[To be supplied.] ////// /// public DiscoveryDocumentReference(string href) { Ref = href; } ///[To be supplied.] ////// /// [XmlAttribute("ref")] public string Ref { get { return reference == null? "" : reference; } set { reference = value; } } ///[To be supplied.] ////// /// [XmlIgnore] public override string DefaultFilename { get { string filename = FilenameFromUrl(Url); return Path.ChangeExtension(filename, ".disco"); // [[....]] change default extension } } ///[To be supplied.] ////// /// [XmlIgnore] public DiscoveryDocument Document { get { if (ClientProtocol == null) throw new InvalidOperationException(Res.GetString(Res.WebMissingClientProtocol)); object document = ClientProtocol.Documents[Url]; if (document == null) { Resolve(); document = ClientProtocol.Documents[Url]; } DiscoveryDocument discoDocument = document as DiscoveryDocument; if (discoDocument == null) { throw new InvalidOperationException(Res.GetString(Res.WebInvalidDocType, typeof(DiscoveryDocument).FullName, document == null? string.Empty: document.GetType().FullName, Url)); } return discoDocument; } } ///[To be supplied.] ////// /// public override void WriteDocument(object document, Stream stream) { WebServicesSection.Current.DiscoveryDocumentSerializer.Serialize(new StreamWriter(stream, new UTF8Encoding(false)), document); } ///[To be supplied.] ////// /// public override object ReadDocument(Stream stream) { return WebServicesSection.Current.DiscoveryDocumentSerializer.Deserialize(stream); } ///[To be supplied.] ////// /// [XmlIgnore] public override string Url { get { return Ref; } set { Ref = value; } } ///[To be supplied.] ////// /// Retrieves a discovery document from Url, either out of the ClientProtocol /// or from a stream. Does not /// private static DiscoveryDocument GetDocumentNoParse(ref string url, DiscoveryClientProtocol client) { DiscoveryDocument d = (DiscoveryDocument) client.Documents[url]; if (d != null) { return d; } string contentType = null; Stream stream = client.Download(ref url, ref contentType); try { XmlTextReader reader = new XmlTextReader(new StreamReader(stream, RequestResponseUtils.GetEncoding(contentType))); reader.WhitespaceHandling = WhitespaceHandling.Significant; reader.XmlResolver = null; reader.DtdProcessing = DtdProcessing.Prohibit; if (!DiscoveryDocument.CanRead(reader)) { // there is no discovery document at this location ArgumentException exception = new ArgumentException(Res.GetString(Res.WebInvalidFormat)); throw new InvalidOperationException(Res.GetString(Res.WebMissingDocument, url), exception); } return DiscoveryDocument.Read(reader); } finally { stream.Close(); } } ////// /// protected internal override void Resolve(string contentType, Stream stream) { DiscoveryDocument document = null; if (ContentType.IsHtml(contentType)) { string newRef = LinkGrep.SearchForLink(stream); if (newRef != null) { string newUrl = UriToString(Url, newRef); document = GetDocumentNoParse(ref newUrl, ClientProtocol); Url = newUrl; } else throw new InvalidContentTypeException(Res.GetString(Res.WebInvalidContentType, contentType), contentType); } if (document == null) { // probably xml... XmlTextReader reader = new XmlTextReader(new StreamReader(stream, RequestResponseUtils.GetEncoding(contentType))); reader.XmlResolver = null; reader.WhitespaceHandling = WhitespaceHandling.Significant; reader.DtdProcessing = DtdProcessing.Prohibit; if (DiscoveryDocument.CanRead(reader)) { // it's a discovery document, so just read it. document = DiscoveryDocument.Read(reader); } else { // check out the processing instructions before the first tag. if any of them // match the form specified in the DISCO spec, save the href. stream.Position = 0; XmlTextReader newReader = new XmlTextReader(new StreamReader(stream, RequestResponseUtils.GetEncoding(contentType))); newReader.XmlResolver = null; newReader.DtdProcessing = DtdProcessing.Prohibit; while (newReader.NodeType != XmlNodeType.Element) { if (newReader.NodeType == XmlNodeType.ProcessingInstruction) { // manually parse the PI contents since XmlTextReader won't automatically do it StringBuilder sb = new StringBuilder("[To be supplied.] ///"); XmlTextReader piReader = new XmlTextReader(new StringReader(sb.ToString())); piReader.XmlResolver = null; piReader.DtdProcessing = DtdProcessing.Prohibit; piReader.Read(); string type = piReader["type"]; string alternate = piReader["alternate"]; string href = piReader["href"]; if (type != null && ContentType.MatchesBase(type, ContentType.TextXml) && alternate != null && string.Compare(alternate, "yes", StringComparison.OrdinalIgnoreCase) == 0 && href != null) { // we got a PI with the right attributes // there is a link to a discovery document. follow it after fully qualifying it. string newUrl = UriToString(Url, href); document = GetDocumentNoParse(ref newUrl, ClientProtocol); Url = newUrl; break; } } newReader.Read(); } } } if (document == null) { // there is no discovery document at this location Exception exception; if (ContentType.IsXml(contentType)) { exception = new ArgumentException(Res.GetString(Res.WebInvalidFormat)); } else { exception = new InvalidContentTypeException(Res.GetString(Res.WebInvalidContentType, contentType), contentType); } throw new InvalidOperationException(Res.GetString(Res.WebMissingDocument, Url), exception); } ClientProtocol.References[Url] = this; ClientProtocol.Documents[Url] = document; foreach (object o in document.References) { if (o is DiscoveryReference) { DiscoveryReference r = (DiscoveryReference) o; if (r.Url.Length == 0) { throw new InvalidOperationException(Res.GetString(Res.WebEmptyRef, r.GetType().FullName, Url)); } r.Url = UriToString(Url, r.Url); //All inheritors of DiscoveryReference that got URIs relative //to Ref property should adjust them like ContractReference does here. ContractReference cr = r as ContractReference; if( (cr != null) && (cr.DocRef != null) ) { cr.DocRef = UriToString(Url, cr.DocRef); } r.ClientProtocol = ClientProtocol; ClientProtocol.References[r.Url] = r; } else ClientProtocol.AdditionalInformation.Add(o); } return; } /// /// /// public void ResolveAll() { ResolveAll(true); } internal void ResolveAll(bool throwOnError) { try { Resolve(); } catch (Exception e) { if (e is ThreadAbortException || e is StackOverflowException || e is OutOfMemoryException) { throw; } if (throwOnError) throw; if (Tracing.On) Tracing.ExceptionCatch(TraceEventType.Warning, this, "ResolveAll", e); // can't continue, because we couldn't find a document. return; } foreach (object o in Document.References) { DiscoveryDocumentReference r = o as DiscoveryDocumentReference; if (r == null) continue; if (ClientProtocol.Documents[r.Url] != null) { continue; } r.ClientProtocol = ClientProtocol; r.ResolveAll(throwOnError); } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.[To be supplied.] ///
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