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//-----------------------------------------------------------------------
// <copyright file="TwitterConsumer.cs" company="Andrew Arnott">
// Copyright (c) Andrew Arnott. All rights reserved.
// </copyright>
//-----------------------------------------------------------------------
namespace DotNetOpenAuth.ApplicationBlock {
using System;
using System.Collections.Generic;
using System.IO;
using System.Net;
using System.Xml;
using System.Xml.Linq;
using DotNetOpenAuth.Messaging;
using DotNetOpenAuth.OAuth;
using DotNetOpenAuth.OAuth.ChannelElements;
/// <summary>
/// A consumer capable of communicating with Twitter.
/// </summary>
public static class TwitterConsumer {
/// <summary>
/// The description of Twitter's OAuth protocol URIs.
/// </summary>
public static readonly ServiceProviderDescription ServiceDescription = new ServiceProviderDescription {
RequestTokenEndpoint = new MessageReceivingEndpoint("http://twitter.com/oauth/request_token", HttpDeliveryMethods.GetRequest | HttpDeliveryMethods.AuthorizationHeaderRequest),
UserAuthorizationEndpoint = new MessageReceivingEndpoint("http://twitter.com/oauth/authorize", HttpDeliveryMethods.GetRequest | HttpDeliveryMethods.AuthorizationHeaderRequest),
AccessTokenEndpoint = new MessageReceivingEndpoint("http://twitter.com/oauth/access_token", HttpDeliveryMethods.GetRequest | HttpDeliveryMethods.AuthorizationHeaderRequest),
TamperProtectionElements = new ITamperProtectionChannelBindingElement[] { new HmacSha1SigningBindingElement() },
};
/// <summary>
/// The URI to get a user's favorites.
/// </summary>
private static readonly MessageReceivingEndpoint GetFavoritesEndpoint = new MessageReceivingEndpoint("http://twitter.com/favorites.xml", HttpDeliveryMethods.GetRequest);
/// <summary>
/// The URI to get the data on the user's home page.
/// </summary>
private static readonly MessageReceivingEndpoint GetFriendTimelineStatusEndpoint = new MessageReceivingEndpoint("http://twitter.com/statuses/friends_timeline.xml", HttpDeliveryMethods.GetRequest);
private static readonly MessageReceivingEndpoint UpdateProfileBackgroundImageEndpoint = new MessageReceivingEndpoint("http://twitter.com/account/update_profile_background_image.xml", HttpDeliveryMethods.PostRequest | HttpDeliveryMethods.AuthorizationHeaderRequest);
private static readonly MessageReceivingEndpoint UpdateProfileImageEndpoint = new MessageReceivingEndpoint("http://twitter.com/account/update_profile_image.xml", HttpDeliveryMethods.PostRequest | HttpDeliveryMethods.AuthorizationHeaderRequest);
/// <summary>
/// Initializes static members of the <see cref="TwitterConsumer"/> class.
/// </summary>
static TwitterConsumer() {
// Twitter can't handle the Expect 100 Continue HTTP header.
ServicePointManager.FindServicePoint(GetFavoritesEndpoint.Location).Expect100Continue = false;
}
public static XDocument GetUpdates(ConsumerBase twitter, string accessToken) {
IncomingWebResponse response = twitter.PrepareAuthorizedRequestAndSend(GetFriendTimelineStatusEndpoint, accessToken);
return XDocument.Load(XmlReader.Create(response.GetResponseReader()));
}
public static XDocument GetFavorites(ConsumerBase twitter, string accessToken) {
IncomingWebResponse response = twitter.PrepareAuthorizedRequestAndSend(GetFavoritesEndpoint, accessToken);
return XDocument.Load(XmlReader.Create(response.GetResponseReader()));
}
public static XDocument UpdateProfileBackgroundImage(ConsumerBase twitter, string accessToken, string image, bool tile) {
var parts = new[] {
MultipartPostPart.CreateFormFilePart("image", image, "image/" + Path.GetExtension(image).Substring(1).ToLowerInvariant()),
MultipartPostPart.CreateFormPart("tile", tile.ToString().ToLowerInvariant()),
};
HttpWebRequest request = twitter.PrepareAuthorizedRequest(UpdateProfileBackgroundImageEndpoint, accessToken, parts);
request.ServicePoint.Expect100Continue = false;
IncomingWebResponse response = twitter.Channel.WebRequestHandler.GetResponse(request);
string responseString = response.GetResponseReader().ReadToEnd();
return XDocument.Parse(responseString);
}
public static XDocument UpdateProfileImage(ConsumerBase twitter, string accessToken, string pathToImage) {
string contentType = "image/" + Path.GetExtension(pathToImage).Substring(1).ToLowerInvariant();
return UpdateProfileImage(twitter, accessToken, File.OpenRead(pathToImage), contentType);
}
public static XDocument UpdateProfileImage(ConsumerBase twitter, string accessToken, Stream image, string contentType) {
var parts = new[] {
MultipartPostPart.CreateFormFilePart("image", "twitterPhoto", contentType, image),
};
HttpWebRequest request = twitter.PrepareAuthorizedRequest(UpdateProfileImageEndpoint, accessToken, parts);
IncomingWebResponse response = twitter.Channel.WebRequestHandler.GetResponse(request);
string responseString = response.GetResponseReader().ReadToEnd();
return XDocument.Parse(responseString);
}
}
}
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