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using System;
using System.Linq;
using System.ServiceModel;
using System.ServiceModel.Channels;
using DotNetOAuth;
/// <summary>
/// A WCF extension to authenticate incoming messages using OAuth.
/// </summary>
public class OAuthAuthorizationManager : ServiceAuthorizationManager {
public OAuthAuthorizationManager() {
}
protected override bool CheckAccessCore(OperationContext operationContext) {
if (!base.CheckAccessCore(operationContext)) {
return false;
}
HttpRequestMessageProperty httpDetails = operationContext.RequestContext.RequestMessage.Properties[HttpRequestMessageProperty.Name] as HttpRequestMessageProperty;
Uri requestUri = operationContext.RequestContext.RequestMessage.Properties["OriginalHttpRequestUri"] as Uri;
ServiceProvider sp = Constants.CreateServiceProvider();
var auth = sp.GetProtectedResourceAuthorization(httpDetails, requestUri);
if (auth != null) {
var accessToken = Global.DataContext.OAuthTokens.Single(token => token.Token == auth.AccessToken);
// Only allow this method call if the access token scope permits it.
string[] scopes = accessToken.Scope.Split('|');
if (scopes.Contains(operationContext.IncomingMessageHeaders.Action)) {
operationContext.IncomingMessageProperties["OAuthAccessToken"] = accessToken;
return true;
}
}
return false;
}
}
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