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using System;
using System.Collections.Generic;
using System.IO;
using System.Net;
using System.Xml.Linq;
using DotNetOpenAuth.Messaging;
using DotNetOpenAuth.OAuth;
using DotNetOpenAuth.OAuth.ChannelElements;
using DotNetOpenAuth.OAuth.Messages;
namespace DotNetOpenAuth.Web.Clients
{
/// <summary>
/// Represents LinkedIn authentication client.
/// </summary>
internal sealed class LinkedInClient : OAuthClient
{
public static readonly ServiceProviderDescription LinkedInServiceDescription = new ServiceProviderDescription
{
RequestTokenEndpoint = new MessageReceivingEndpoint("https://api.linkedin.com/uas/oauth/requestToken", HttpDeliveryMethods.GetRequest | HttpDeliveryMethods.AuthorizationHeaderRequest),
UserAuthorizationEndpoint = new MessageReceivingEndpoint("https://www.linkedin.com/uas/oauth/authenticate", HttpDeliveryMethods.GetRequest | HttpDeliveryMethods.AuthorizationHeaderRequest),
AccessTokenEndpoint = new MessageReceivingEndpoint("https://api.linkedin.com/uas/oauth/accessToken", HttpDeliveryMethods.GetRequest | HttpDeliveryMethods.AuthorizationHeaderRequest),
TamperProtectionElements = new ITamperProtectionChannelBindingElement[] { new HmacSha1SigningBindingElement() },
};
/// <summary>
/// Initializes a new instance of the <see cref="LinkedInClient"/> class.
/// </summary>
/// <param name="consumerKey">The LinkedIn app's consumer key.</param>
/// <param name="consumerSecret">The LinkedIn app's consumer secret.</param>
[System.Diagnostics.CodeAnalysis.SuppressMessage(
"Microsoft.Reliability",
"CA2000:Dispose objects before losing scope",
Justification = "We can't dispose the object because we still need it through the app lifetime.")]
public LinkedInClient(string consumerKey, string consumerSecret) :
base("linkedIn", LinkedInServiceDescription, consumerKey, consumerSecret)
{
}
/// <summary>
/// Check if authentication succeeded after user is redirected back from the service provider.
/// </summary>
/// <param name="response">The response token returned from service provider</param>
/// <returns>
/// Authentication result.
/// </returns>
[System.Diagnostics.CodeAnalysis.SuppressMessage(
"Microsoft.Design",
"CA1031:DoNotCatchGeneralExceptionTypes",
Justification = "We don't care if the request fails.")]
protected override AuthenticationResult VerifyAuthenticationCore(AuthorizedTokenResponse response)
{
// See here for Field Selectors API http://developer.linkedin.com/docs/DOC-1014
const string profileRequestUrl = "http://api.linkedin.com/v1/people/~:(id,first-name,last-name,headline,industry,summary)";
string accessToken = response.AccessToken;
var profileEndpoint = new MessageReceivingEndpoint(profileRequestUrl, HttpDeliveryMethods.GetRequest);
HttpWebRequest request = WebWorker.PrepareAuthorizedRequest(profileEndpoint, accessToken);
try
{
using (WebResponse profileResponse = request.GetResponse())
{
using (Stream responseStream = profileResponse.GetResponseStream())
{
XDocument document = XDocument.Load(responseStream);
string userId = document.Root.Element("id").Value;
string firstName = document.Root.Element("first-name").Value;
string lastName = document.Root.Element("last-name").Value;
string userName = firstName + " " + lastName;
var extraData = new Dictionary<string, string>();
extraData.Add("name", userName);
extraData.AddDataIfNotEmpty(document, "headline");
extraData.AddDataIfNotEmpty(document, "summary");
extraData.AddDataIfNotEmpty(document, "industry");
return new AuthenticationResult(
isSuccessful: true,
provider: ProviderName,
providerUserId: userId,
userName: userName,
extraData: extraData);
}
}
}
catch (Exception exception)
{
return new AuthenticationResult(exception);
}
}
}
}
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