#region License Information (GPL v3)
/*
ShareX - A program that allows you to take screenshots and share any file type
Copyright (C) 2007-2014 ShareX Developers
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
Optionally you can also view the license at .
*/
#endregion License Information (GPL v3)
using HelpersLib;
using Newtonsoft.Json;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.IO;
using UploadersLib.HelperClasses;
namespace UploadersLib.FileUploaders
{
public sealed class GoogleDrive : FileUploader, IOAuth2
{
public OAuth2Info AuthInfo { get; set; }
public bool IsPublic { get; set; }
public GoogleDrive(OAuth2Info oauth)
{
AuthInfo = oauth;
}
public string GetAuthorizationURL()
{
return string.Format("https://accounts.google.com/o/oauth2/auth?response_type={0}&client_id={1}&redirect_uri={2}&scope={3}",
"code", AuthInfo.Client_ID, "urn:ietf:wg:oauth:2.0:oob", Helpers.URLEncode("https://www.googleapis.com/auth/drive"));
}
public bool GetAccessToken(string code)
{
Dictionary args = new Dictionary();
args.Add("code", code);
args.Add("client_id", AuthInfo.Client_ID);
args.Add("client_secret", AuthInfo.Client_Secret);
args.Add("redirect_uri", "urn:ietf:wg:oauth:2.0:oob");
args.Add("grant_type", "authorization_code");
string response = SendRequest(HttpMethod.POST, "https://accounts.google.com/o/oauth2/token", args);
if (!string.IsNullOrEmpty(response))
{
OAuth2Token token = JsonConvert.DeserializeObject(response);
if (token != null && !string.IsNullOrEmpty(token.access_token))
{
token.UpdateExpireDate();
AuthInfo.Token = token;
return true;
}
}
return false;
}
public bool RefreshAccessToken()
{
if (OAuth2Info.CheckOAuth(AuthInfo) && !string.IsNullOrEmpty(AuthInfo.Token.refresh_token))
{
Dictionary args = new Dictionary();
args.Add("refresh_token", AuthInfo.Token.refresh_token);
args.Add("client_id", AuthInfo.Client_ID);
args.Add("client_secret", AuthInfo.Client_Secret);
args.Add("grant_type", "refresh_token");
string response = SendRequest(HttpMethod.POST, "https://accounts.google.com/o/oauth2/token", args);
if (!string.IsNullOrEmpty(response))
{
OAuth2Token token = JsonConvert.DeserializeObject(response);
if (token != null && !string.IsNullOrEmpty(token.access_token))
{
token.UpdateExpireDate();
string refresh_token = AuthInfo.Token.refresh_token;
AuthInfo.Token = token;
AuthInfo.Token.refresh_token = refresh_token;
return true;
}
}
}
return false;
}
private NameValueCollection GetAuthHeaders()
{
NameValueCollection headers = new NameValueCollection();
headers.Add("Authorization", "Bearer " + AuthInfo.Token.access_token);
return headers;
}
public bool CheckAuthorization()
{
if (OAuth2Info.CheckOAuth(AuthInfo))
{
if (AuthInfo.Token.IsExpired && !RefreshAccessToken())
{
Errors.Add("Refresh access token failed.");
return false;
}
}
else
{
Errors.Add("Login is required.");
return false;
}
return true;
}
public void SetPermissions(string fileID, GoogleDrivePermissionRole role, GoogleDrivePermissionType type, string value, bool withLink)
{
string url = string.Format("https://www.googleapis.com/drive/v2/files/{0}/permissions", fileID);
string json = JsonConvert.SerializeObject(new
{
role = role.ToString(),
type = type.ToString(),
value = value,
withLink = withLink.ToString()
});
string response = SendPostRequestJSON(url, json, headers: GetAuthHeaders());
}
public override UploadResult Upload(Stream stream, string fileName)
{
if (!CheckAuthorization())
{
return null;
}
Dictionary args = new Dictionary();
args.Add("title", fileName);
UploadResult result = UploadData(stream, "https://www.googleapis.com/upload/drive/v2/files", fileName, "file", args, headers: GetAuthHeaders());
if (!string.IsNullOrEmpty(result.Response))
{
GoogleDriveUpload upload = JsonConvert.DeserializeObject(result.Response);
if (upload != null)
{
if (IsPublic)
{
AllowReportProgress = false;
SetPermissions(upload.id, GoogleDrivePermissionRole.reader, GoogleDrivePermissionType.anyone, "", true);
}
result.URL = upload.alternateLink;
}
}
return result;
}
public class GoogleDriveUpload
{
public string id { get; set; }
public string alternateLink { get; set; }
}
public enum GoogleDrivePermissionRole
{
owner, reader, writer
}
public enum GoogleDrivePermissionType
{
user, group, domain, anyone
}
}
}