2013-11-03 23:53:49 +13:00
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#region License Information (GPL v3)
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/*
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ShareX - A program that allows you to take screenshots and share any file type
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2014-05-13 21:06:40 +12:00
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Copyright (C) 2007-2014 ShareX Developers
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2013-11-03 23:53:49 +13:00
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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Optionally you can also view the license at <http://www.gnu.org/licenses/>.
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*/
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#endregion License Information (GPL v3)
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using HelpersLib;
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using Newtonsoft.Json;
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using System.Collections.Generic;
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using System.Collections.Specialized;
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using System.IO;
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using System.Xml.Linq;
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using UploadersLib.HelperClasses;
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namespace UploadersLib.ImageUploaders
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{
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public class Picasa : ImageUploader, IOAuth2
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{
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public OAuth2Info AuthInfo { get; set; }
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public string AlbumID { get; set; }
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private static readonly XNamespace AtomNS = "http://www.w3.org/2005/Atom";
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private static readonly XNamespace MediaNS = "http://search.yahoo.com/mrss/";
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private static readonly XNamespace GPhotoNS = "http://schemas.google.com/photos/2007";
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public Picasa(OAuth2Info oauth)
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{
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AuthInfo = oauth;
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}
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public string GetAuthorizationURL()
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{
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return string.Format("https://accounts.google.com/o/oauth2/auth?response_type={0}&client_id={1}&redirect_uri={2}&scope={3}",
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2014-06-10 08:00:59 +12:00
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"code", AuthInfo.Client_ID, "urn:ietf:wg:oauth:2.0:oob", URLHelpers.URLEncode("https://picasaweb.google.com/data"));
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2013-11-03 23:53:49 +13:00
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}
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public bool GetAccessToken(string code)
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{
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Dictionary<string, string> args = new Dictionary<string, string>();
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args.Add("code", code);
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args.Add("client_id", AuthInfo.Client_ID);
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args.Add("client_secret", AuthInfo.Client_Secret);
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args.Add("redirect_uri", "urn:ietf:wg:oauth:2.0:oob");
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args.Add("grant_type", "authorization_code");
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2014-04-17 05:55:07 +12:00
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string response = SendRequest(HttpMethod.POST, "https://accounts.google.com/o/oauth2/token", args);
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2013-11-03 23:53:49 +13:00
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if (!string.IsNullOrEmpty(response))
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{
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OAuth2Token token = JsonConvert.DeserializeObject<OAuth2Token>(response);
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if (token != null && !string.IsNullOrEmpty(token.access_token))
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{
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token.UpdateExpireDate();
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AuthInfo.Token = token;
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return true;
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}
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}
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return false;
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}
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public bool RefreshAccessToken()
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{
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if (OAuth2Info.CheckOAuth(AuthInfo) && !string.IsNullOrEmpty(AuthInfo.Token.refresh_token))
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{
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Dictionary<string, string> args = new Dictionary<string, string>();
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args.Add("refresh_token", AuthInfo.Token.refresh_token);
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args.Add("client_id", AuthInfo.Client_ID);
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args.Add("client_secret", AuthInfo.Client_Secret);
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args.Add("grant_type", "refresh_token");
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2014-04-17 05:55:07 +12:00
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string response = SendRequest(HttpMethod.POST, "https://accounts.google.com/o/oauth2/token", args);
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2013-11-03 23:53:49 +13:00
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if (!string.IsNullOrEmpty(response))
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{
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OAuth2Token token = JsonConvert.DeserializeObject<OAuth2Token>(response);
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if (token != null && !string.IsNullOrEmpty(token.access_token))
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{
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token.UpdateExpireDate();
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string refresh_token = AuthInfo.Token.refresh_token;
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AuthInfo.Token = token;
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AuthInfo.Token.refresh_token = refresh_token;
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return true;
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}
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}
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}
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return false;
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}
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2014-06-09 07:11:44 +12:00
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private NameValueCollection GetAuthHeaders()
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{
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NameValueCollection headers = new NameValueCollection();
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headers.Add("Authorization", "Bearer " + AuthInfo.Token.access_token);
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return headers;
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}
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2013-11-03 23:53:49 +13:00
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public bool CheckAuthorization()
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{
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if (OAuth2Info.CheckOAuth(AuthInfo))
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{
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if (AuthInfo.Token.IsExpired && !RefreshAccessToken())
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{
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Errors.Add("Refresh access token failed.");
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return false;
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}
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}
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else
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{
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Errors.Add("Login is required.");
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return false;
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}
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return true;
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}
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public List<PicasaAlbumInfo> GetAlbumList()
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{
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if (!CheckAuthorization()) return null;
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List<PicasaAlbumInfo> albumList = new List<PicasaAlbumInfo>();
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2014-06-09 07:11:44 +12:00
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string response = SendRequest(HttpMethod.GET, "https://picasaweb.google.com/data/feed/api/user/default", headers: GetAuthHeaders());
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2013-11-03 23:53:49 +13:00
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if (!string.IsNullOrEmpty(response))
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{
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XDocument xd = XDocument.Parse(response);
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if (xd != null)
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{
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foreach (XElement entry in xd.Descendants(AtomNS + "entry"))
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{
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PicasaAlbumInfo album = new PicasaAlbumInfo();
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album.ID = entry.GetElementValue(GPhotoNS + "id");
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album.Name = entry.GetElementValue(GPhotoNS + "name");
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album.Summary = entry.GetElementValue(AtomNS + "summary");
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albumList.Add(album);
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}
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}
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}
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return albumList;
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}
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public override UploadResult Upload(Stream stream, string fileName)
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{
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if (!CheckAuthorization()) return null;
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if (string.IsNullOrEmpty(AlbumID))
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{
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AlbumID = "default";
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}
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UploadResult ur = new UploadResult();
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string url = string.Format("https://picasaweb.google.com/data/feed/api/user/default/albumid/" + AlbumID);
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string contentType = Helpers.GetMimeType(fileName);
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2014-06-09 07:11:44 +12:00
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NameValueCollection headers = GetAuthHeaders();
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headers.Add("Slug", URLHelpers.URLEncode(fileName));
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2013-11-03 23:53:49 +13:00
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2014-07-01 20:33:33 +12:00
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ur.Response = SendRequestStream(url, stream, contentType, headers: headers);
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2013-11-03 23:53:49 +13:00
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XDocument xd = XDocument.Parse(ur.Response);
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XElement entry_element = xd.Element(AtomNS + "entry");
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if (entry_element != null)
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{
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XElement group_element = entry_element.Element(MediaNS + "group");
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if (group_element != null)
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{
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XElement content_element = group_element.Element(MediaNS + "content");
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if (content_element != null)
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{
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ur.ThumbnailURL = content_element.GetAttributeValue("url");
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int last_slash_index = ur.ThumbnailURL.LastIndexOf(@"/");
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ur.URL = ur.ThumbnailURL.Insert(last_slash_index, @"/s0");
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}
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}
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}
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return ur;
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}
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}
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public class PicasaAlbumInfo
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{
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public string ID { get; set; }
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public string Name { get; set; }
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public string Summary { get; set; }
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}
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}
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