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Diffstat (limited to 'src/DotNetOpenAuth.ApplicationBlock/GoogleConsumer.cs')
| -rw-r--r-- | src/DotNetOpenAuth.ApplicationBlock/GoogleConsumer.cs | 288 |
1 files changed, 288 insertions, 0 deletions
diff --git a/src/DotNetOpenAuth.ApplicationBlock/GoogleConsumer.cs b/src/DotNetOpenAuth.ApplicationBlock/GoogleConsumer.cs new file mode 100644 index 0000000..1bdb04d --- /dev/null +++ b/src/DotNetOpenAuth.ApplicationBlock/GoogleConsumer.cs @@ -0,0 +1,288 @@ +//----------------------------------------------------------------------- +// <copyright file="GoogleConsumer.cs" company="Outercurve Foundation"> +// Copyright (c) Outercurve Foundation. All rights reserved. +// </copyright> +//----------------------------------------------------------------------- + +namespace DotNetOpenAuth.ApplicationBlock { + using System; + using System.Collections.Generic; + using System.Diagnostics; + using System.Globalization; + using System.IO; + using System.Linq; + using System.Net; + using System.Security.Cryptography.X509Certificates; + using System.Text; + using System.Text.RegularExpressions; + using System.Xml; + using System.Xml.Linq; + using DotNetOpenAuth.Messaging; + using DotNetOpenAuth.OAuth; + using DotNetOpenAuth.OAuth.ChannelElements; + + /// <summary> + /// A consumer capable of communicating with Google Data APIs. + /// </summary> + public static class GoogleConsumer { + /// <summary> + /// The Consumer to use for accessing Google data APIs. + /// </summary> + public static readonly ServiceProviderDescription ServiceDescription = new ServiceProviderDescription { + RequestTokenEndpoint = new MessageReceivingEndpoint("https://www.google.com/accounts/OAuthGetRequestToken", HttpDeliveryMethods.AuthorizationHeaderRequest | HttpDeliveryMethods.GetRequest), + UserAuthorizationEndpoint = new MessageReceivingEndpoint("https://www.google.com/accounts/OAuthAuthorizeToken", HttpDeliveryMethods.AuthorizationHeaderRequest | HttpDeliveryMethods.GetRequest), + AccessTokenEndpoint = new MessageReceivingEndpoint("https://www.google.com/accounts/OAuthGetAccessToken", HttpDeliveryMethods.AuthorizationHeaderRequest | HttpDeliveryMethods.GetRequest), + TamperProtectionElements = new ITamperProtectionChannelBindingElement[] { new HmacSha1SigningBindingElement() }, + }; + + /// <summary> + /// A mapping between Google's applications and their URI scope values. + /// </summary> + private static readonly Dictionary<Applications, string> DataScopeUris = new Dictionary<Applications, string> { + { Applications.Analytics, "https://www.google.com/analytics/feeds/" }, + { Applications.GoogleBase, "http://www.google.com/base/feeds/" }, + { Applications.Blogger, "http://www.blogger.com/feeds" }, + { Applications.BookSearch, "http://www.google.com/books/feeds/" }, + { Applications.Calendar, "http://www.google.com/calendar/feeds/" }, + { Applications.Contacts, "http://www.google.com/m8/feeds/" }, + { Applications.DocumentsList, "http://docs.google.com/feeds/" }, + { Applications.Finance, "http://finance.google.com/finance/feeds/" }, + { Applications.Gmail, "https://mail.google.com/mail/feed/atom" }, + { Applications.Health, "https://www.google.com/h9/feeds/" }, + { Applications.Maps, "http://maps.google.com/maps/feeds/" }, + { Applications.OpenSocial, "http://sandbox.gmodules.com/api/" }, + { Applications.PicasaWeb, "http://picasaweb.google.com/data/" }, + { Applications.Spreadsheets, "http://spreadsheets.google.com/feeds/" }, + { Applications.WebmasterTools, "http://www.google.com/webmasters/tools/feeds/" }, + { Applications.YouTube, "http://gdata.youtube.com" }, + }; + + /// <summary> + /// The URI to get contacts once authorization is granted. + /// </summary> + private static readonly MessageReceivingEndpoint GetContactsEndpoint = new MessageReceivingEndpoint("http://www.google.com/m8/feeds/contacts/default/full/", HttpDeliveryMethods.GetRequest); + + /// <summary> + /// The many specific authorization scopes Google offers. + /// </summary> + [Flags] + public enum Applications : long { + /// <summary> + /// The Gmail address book. + /// </summary> + Contacts = 0x1, + + /// <summary> + /// Appointments in Google Calendar. + /// </summary> + Calendar = 0x2, + + /// <summary> + /// Blog post authoring. + /// </summary> + Blogger = 0x4, + + /// <summary> + /// Google Finance + /// </summary> + Finance = 0x8, + + /// <summary> + /// Google Gmail + /// </summary> + Gmail = 0x10, + + /// <summary> + /// Google Health + /// </summary> + Health = 0x20, + + /// <summary> + /// Google OpenSocial + /// </summary> + OpenSocial = 0x40, + + /// <summary> + /// Picasa Web + /// </summary> + PicasaWeb = 0x80, + + /// <summary> + /// Google Spreadsheets + /// </summary> + Spreadsheets = 0x100, + + /// <summary> + /// Webmaster Tools + /// </summary> + WebmasterTools = 0x200, + + /// <summary> + /// YouTube service + /// </summary> + YouTube = 0x400, + + /// <summary> + /// Google Docs + /// </summary> + DocumentsList = 0x800, + + /// <summary> + /// Google Book Search + /// </summary> + BookSearch = 0x1000, + + /// <summary> + /// Google Base + /// </summary> + GoogleBase = 0x2000, + + /// <summary> + /// Google Analytics + /// </summary> + Analytics = 0x4000, + + /// <summary> + /// Google Maps + /// </summary> + Maps = 0x8000, + } + + /// <summary> + /// The service description to use for accessing Google data APIs using an X509 certificate. + /// </summary> + /// <param name="signingCertificate">The signing certificate.</param> + /// <returns>A service description that can be used to create an instance of + /// <see cref="DesktopConsumer"/> or <see cref="WebConsumer"/>. </returns> + public static ServiceProviderDescription CreateRsaSha1ServiceDescription(X509Certificate2 signingCertificate) { + if (signingCertificate == null) { + throw new ArgumentNullException("signingCertificate"); + } + + return new ServiceProviderDescription { + RequestTokenEndpoint = new MessageReceivingEndpoint("https://www.google.com/accounts/OAuthGetRequestToken", HttpDeliveryMethods.AuthorizationHeaderRequest | HttpDeliveryMethods.GetRequest), + UserAuthorizationEndpoint = new MessageReceivingEndpoint("https://www.google.com/accounts/OAuthAuthorizeToken", HttpDeliveryMethods.AuthorizationHeaderRequest | HttpDeliveryMethods.GetRequest), + AccessTokenEndpoint = new MessageReceivingEndpoint("https://www.google.com/accounts/OAuthGetAccessToken", HttpDeliveryMethods.AuthorizationHeaderRequest | HttpDeliveryMethods.GetRequest), + TamperProtectionElements = new ITamperProtectionChannelBindingElement[] { new RsaSha1ConsumerSigningBindingElement(signingCertificate) }, + }; + } + + /// <summary> + /// Requests authorization from Google to access data from a set of Google applications. + /// </summary> + /// <param name="consumer">The Google consumer previously constructed using <see cref="CreateWebConsumer"/> or <see cref="CreateDesktopConsumer"/>.</param> + /// <param name="requestedAccessScope">The requested access scope.</param> + public static void RequestAuthorization(WebConsumer consumer, Applications requestedAccessScope) { + if (consumer == null) { + throw new ArgumentNullException("consumer"); + } + + var extraParameters = new Dictionary<string, string> { + { "scope", GetScopeUri(requestedAccessScope) }, + }; + Uri callback = Util.GetCallbackUrlFromContext(); + var request = consumer.PrepareRequestUserAuthorization(callback, extraParameters, null); + consumer.Channel.Send(request); + } + + /// <summary> + /// Requests authorization from Google to access data from a set of Google applications. + /// </summary> + /// <param name="consumer">The Google consumer previously constructed using <see cref="CreateWebConsumer"/> or <see cref="CreateDesktopConsumer"/>.</param> + /// <param name="requestedAccessScope">The requested access scope.</param> + /// <param name="requestToken">The unauthorized request token assigned by Google.</param> + /// <returns>The request token</returns> + public static Uri RequestAuthorization(DesktopConsumer consumer, Applications requestedAccessScope, out string requestToken) { + if (consumer == null) { + throw new ArgumentNullException("consumer"); + } + + var extraParameters = new Dictionary<string, string> { + { "scope", GetScopeUri(requestedAccessScope) }, + }; + + return consumer.RequestUserAuthorization(extraParameters, null, out requestToken); + } + + /// <summary> + /// Gets the Gmail address book's contents. + /// </summary> + /// <param name="consumer">The Google consumer.</param> + /// <param name="accessToken">The access token previously retrieved.</param> + /// <param name="maxResults">The maximum number of entries to return. If you want to receive all of the contacts, rather than only the default maximum, you can specify a very large number here.</param> + /// <param name="startIndex">The 1-based index of the first result to be retrieved (for paging).</param> + /// <returns>An XML document returned by Google.</returns> + public static XDocument GetContacts(ConsumerBase consumer, string accessToken, int maxResults/* = 25*/, int startIndex/* = 1*/) { + if (consumer == null) { + throw new ArgumentNullException("consumer"); + } + + var extraData = new Dictionary<string, string>() { + { "start-index", startIndex.ToString(CultureInfo.InvariantCulture) }, + { "max-results", maxResults.ToString(CultureInfo.InvariantCulture) }, + }; + var request = consumer.PrepareAuthorizedRequest(GetContactsEndpoint, accessToken, extraData); + + // Enable gzip compression. Google only compresses the response for recognized user agent headers. - Mike Lim + request.AutomaticDecompression = DecompressionMethods.GZip; + request.UserAgent = "Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/534.16 (KHTML, like Gecko) Chrome/10.0.648.151 Safari/534.16"; + + var response = consumer.Channel.WebRequestHandler.GetResponse(request); + string body = response.GetResponseReader().ReadToEnd(); + XDocument result = XDocument.Parse(body); + return result; + } + + public static void PostBlogEntry(ConsumerBase consumer, string accessToken, string blogUrl, string title, XElement body) { + string feedUrl; + var getBlogHome = WebRequest.Create(blogUrl); + using (var blogHomeResponse = getBlogHome.GetResponse()) { + using (StreamReader sr = new StreamReader(blogHomeResponse.GetResponseStream())) { + string homePageHtml = sr.ReadToEnd(); + Match m = Regex.Match(homePageHtml, @"http://www.blogger.com/feeds/\d+/posts/default"); + Debug.Assert(m.Success, "Posting operation failed."); + feedUrl = m.Value; + } + } + const string Atom = "http://www.w3.org/2005/Atom"; + XElement entry = new XElement( + XName.Get("entry", Atom), + new XElement(XName.Get("title", Atom), new XAttribute("type", "text"), title), + new XElement(XName.Get("content", Atom), new XAttribute("type", "xhtml"), body), + new XElement(XName.Get("category", Atom), new XAttribute("scheme", "http://www.blogger.com/atom/ns#"), new XAttribute("term", "oauthdemo"))); + + MemoryStream ms = new MemoryStream(); + XmlWriterSettings xws = new XmlWriterSettings() { + Encoding = Encoding.UTF8, + }; + XmlWriter xw = XmlWriter.Create(ms, xws); + entry.WriteTo(xw); + xw.Flush(); + + WebRequest request = consumer.PrepareAuthorizedRequest(new MessageReceivingEndpoint(feedUrl, HttpDeliveryMethods.PostRequest | HttpDeliveryMethods.AuthorizationHeaderRequest), accessToken); + request.ContentType = "application/atom+xml"; + request.Method = "POST"; + request.ContentLength = ms.Length; + ms.Seek(0, SeekOrigin.Begin); + using (Stream requestStream = request.GetRequestStream()) { + ms.CopyTo(requestStream); + } + using (HttpWebResponse response = (HttpWebResponse)request.GetResponse()) { + if (response.StatusCode == HttpStatusCode.Created) { + // Success + } else { + // Error! + } + } + } + + /// <summary> + /// Gets the scope URI in Google's format. + /// </summary> + /// <param name="scope">The scope, which may include one or several Google applications.</param> + /// <returns>A space-delimited list of URIs for the requested Google applications.</returns> + public static string GetScopeUri(Applications scope) { + return string.Join(" ", Util.GetIndividualFlags(scope).Select(app => DataScopeUris[(Applications)app]).ToArray()); + } + } +} |