/// <include file='doc\DiscoveryDocumentReference.uex' path='docs/doc[@for="DiscoveryDocumentReference.Resolve"]/*' />
/// <devdoc>
/// <para>[To be supplied.]</para>
/// </devdoc>
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("<pi ");
sb.Append(newReader.Value);
sb.Append("/>");
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;
}
protected internal override void Resolve(string contentType, Stream stream)
{
DiscoveryDocument documentNoParse = null;
if (ContentType.IsHtml(contentType))
{
string relUrl = LinkGrep.SearchForLink(stream);
if (relUrl == null)
{
throw new InvalidContentTypeException(System.Web.Services.Res.GetString("WebInvalidContentType", new object[] { contentType }), contentType);
}
string url = DiscoveryReference.UriToString(this.Url, relUrl);
documentNoParse = GetDocumentNoParse(ref url, base.ClientProtocol);
this.Url = url;
}
if (documentNoParse == null)
{
XmlTextReader xmlReader = new XmlTextReader(new StreamReader(stream, RequestResponseUtils.GetEncoding(contentType)))
{
XmlResolver = null,
WhitespaceHandling = WhitespaceHandling.Significant,
DtdProcessing = DtdProcessing.Prohibit
};
if (DiscoveryDocument.CanRead(xmlReader))
{
documentNoParse = DiscoveryDocument.Read(xmlReader);
}
else
{
stream.Position = 0L;
XmlTextReader reader2 = new XmlTextReader(new StreamReader(stream, RequestResponseUtils.GetEncoding(contentType)))
{
XmlResolver = null,
DtdProcessing = DtdProcessing.Prohibit
};
while (reader2.NodeType != XmlNodeType.Element)
{
if (reader2.NodeType == XmlNodeType.ProcessingInstruction)
{
StringBuilder builder = new StringBuilder("<pi ");
builder.Append(reader2.Value);
builder.Append("/>");
XmlTextReader reader3 = new XmlTextReader(new StringReader(builder.ToString()))
{
XmlResolver = null,
DtdProcessing = DtdProcessing.Prohibit
};
reader3.Read();
string str3 = reader3["type"];
string strA = reader3["alternate"];
string str5 = reader3["href"];
if ((((str3 != null) && ContentType.MatchesBase(str3, "text/xml")) && ((strA != null) && (string.Compare(strA, "yes", StringComparison.OrdinalIgnoreCase) == 0))) && (str5 != null))
{
string str6 = DiscoveryReference.UriToString(this.Url, str5);
documentNoParse = GetDocumentNoParse(ref str6, base.ClientProtocol);
this.Url = str6;
break;
}
}
reader2.Read();
}
}
}
if (documentNoParse == null)
{
Exception exception;
if (ContentType.IsXml(contentType))
{
exception = new ArgumentException(System.Web.Services.Res.GetString("WebInvalidFormat"));
}
else
{
exception = new InvalidContentTypeException(System.Web.Services.Res.GetString("WebInvalidContentType", new object[] { contentType }), contentType);
}
throw new InvalidOperationException(System.Web.Services.Res.GetString("WebMissingDocument", new object[] { this.Url }), exception);
}
base.ClientProtocol.References[this.Url] = this;
base.ClientProtocol.Documents[this.Url] = documentNoParse;
foreach (object obj2 in documentNoParse.References)
{
if (obj2 is DiscoveryReference)
{
DiscoveryReference reference = (DiscoveryReference)obj2;
if (reference.Url.Length == 0)
{
throw new InvalidOperationException(System.Web.Services.Res.GetString("WebEmptyRef", new object[] { reference.GetType().FullName, this.Url }));
}
reference.Url = DiscoveryReference.UriToString(this.Url, reference.Url);
ContractReference reference2 = reference as ContractReference;
if ((reference2 != null) && (reference2.DocRef != null))
{
reference2.DocRef = DiscoveryReference.UriToString(this.Url, reference2.DocRef);
}
reference.ClientProtocol = base.ClientProtocol;
base.ClientProtocol.References[reference.Url] = reference;
}
else
{
base.ClientProtocol.AdditionalInformation.Add(obj2);
}
}
}