413 lines
17 KiB
C#
413 lines
17 KiB
C#
#region Disclaimer / License
|
|
// Copyright (C) 2011, Kenneth Skovhede
|
|
// http://www.hexad.dk, opensource@hexad.dk
|
|
//
|
|
// This library is free software; you can redistribute it and/or
|
|
// modify it under the terms of the GNU Lesser General Public
|
|
// License as published by the Free Software Foundation; either
|
|
// version 2.1 of the License, or (at your option) any later version.
|
|
//
|
|
// This library 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
|
|
// Lesser General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public
|
|
// License along with this library; if not, write to the Free Software
|
|
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
//
|
|
#endregion
|
|
using System;
|
|
using System.Collections.Generic;
|
|
using System.Text;
|
|
using System.Net;
|
|
using Duplicati.Library.Interface;
|
|
|
|
namespace Duplicati.Library.Backend
|
|
{
|
|
public class CloudFiles : IBackend, IStreamingBackend
|
|
{
|
|
public const string AUTH_URL_US = "https://identity.api.rackspacecloud.com/auth";
|
|
public const string AUTH_URL_UK = "https://lon.auth.api.rackspacecloud.com/v1.0";
|
|
private const string DUMMY_HOSTNAME = "api.mosso.com";
|
|
|
|
public static readonly KeyValuePair<string, string>[] KNOWN_CLOUDFILES_PROVIDERS = new KeyValuePair<string, string>[] {
|
|
new KeyValuePair<string, string>("Rackspace US", AUTH_URL_US),
|
|
new KeyValuePair<string, string>("Rackspace UK", AUTH_URL_UK),
|
|
};
|
|
|
|
|
|
private const int ITEM_LIST_LIMIT = 1000;
|
|
private string m_username;
|
|
private string m_password;
|
|
private string m_path;
|
|
|
|
private string m_storageUrl = null;
|
|
private string m_authToken = null;
|
|
private string m_authUrl;
|
|
|
|
public CloudFiles()
|
|
{
|
|
}
|
|
|
|
public CloudFiles(string url, Dictionary<string, string> options)
|
|
{
|
|
var uri = new Utility.Uri(url);
|
|
|
|
if (options.ContainsKey("auth-username"))
|
|
m_username = options["auth-username"];
|
|
if (options.ContainsKey("auth-password"))
|
|
m_password = options["auth-password"];
|
|
|
|
if (options.ContainsKey("cloudfiles-username"))
|
|
m_username = options["cloudfiles-username"];
|
|
if (options.ContainsKey("cloudfiles-accesskey"))
|
|
m_password = options["cloudfiles-accesskey"];
|
|
|
|
if (!string.IsNullOrEmpty(uri.Username))
|
|
m_username = uri.Username;
|
|
if (!string.IsNullOrEmpty(uri.Password))
|
|
m_password = uri.Password;
|
|
|
|
if (string.IsNullOrEmpty(m_username))
|
|
throw new Exception(Strings.CloudFiles.NoUserIDError);
|
|
if (string.IsNullOrEmpty(m_password))
|
|
throw new Exception(Strings.CloudFiles.NoAPIKeyError);
|
|
|
|
//Fallback to the previous format
|
|
if (url.Contains(DUMMY_HOSTNAME))
|
|
{
|
|
Uri u = new Uri(url);
|
|
|
|
if (!string.IsNullOrEmpty(u.UserInfo))
|
|
{
|
|
if (u.UserInfo.IndexOf(":") >= 0)
|
|
{
|
|
m_username = u.UserInfo.Substring(0, u.UserInfo.IndexOf(":"));
|
|
m_password = u.UserInfo.Substring(u.UserInfo.IndexOf(":") + 1);
|
|
}
|
|
else
|
|
{
|
|
m_username = u.UserInfo;
|
|
}
|
|
}
|
|
|
|
//We use the api.mosso.com hostname.
|
|
//This allows the use of containers that have names that are not valid hostnames,
|
|
// such as container names with spaces in them
|
|
if (u.Host.Equals(DUMMY_HOSTNAME))
|
|
m_path = System.Web.HttpUtility.UrlDecode(u.PathAndQuery);
|
|
else
|
|
m_path = u.Host + System.Web.HttpUtility.UrlDecode(u.PathAndQuery);
|
|
}
|
|
else
|
|
{
|
|
m_path = uri.HostAndPath;
|
|
}
|
|
|
|
if (m_path.EndsWith("/"))
|
|
m_path = m_path.Substring(0, m_path.Length - 1);
|
|
if (!m_path.StartsWith("/"))
|
|
m_path = "/" + m_path;
|
|
|
|
if (!options.TryGetValue("cloudfiles-authentication-url", out m_authUrl))
|
|
m_authUrl = Utility.Utility.ParseBoolOption(options, "cloudfiles-uk-account") ? AUTH_URL_UK : AUTH_URL_US;
|
|
}
|
|
|
|
#region IBackend Members
|
|
|
|
public string DisplayName
|
|
{
|
|
get { return Strings.CloudFiles.DisplayName; }
|
|
}
|
|
|
|
public string ProtocolKey
|
|
{
|
|
get { return "cloudfiles"; }
|
|
}
|
|
|
|
public List<IFileEntry> List()
|
|
{
|
|
List<IFileEntry> files = new List<IFileEntry>();
|
|
string extraUrl = "?format=xml&limit=" + ITEM_LIST_LIMIT.ToString();
|
|
string markerUrl = "";
|
|
|
|
bool repeat;
|
|
|
|
do
|
|
{
|
|
System.Xml.XmlDocument doc = new System.Xml.XmlDocument();
|
|
|
|
HttpWebRequest req = CreateRequest("", extraUrl + markerUrl);
|
|
|
|
try
|
|
{
|
|
Utility.AsyncHttpRequest areq = new Utility.AsyncHttpRequest(req);
|
|
using (HttpWebResponse resp = (HttpWebResponse)areq.GetResponse())
|
|
using (System.IO.Stream s = resp.GetResponseStream())
|
|
doc.Load(s);
|
|
}
|
|
catch (WebException wex)
|
|
{
|
|
if (markerUrl == "") //Only check on first itteration
|
|
if (wex.Response is HttpWebResponse && ((HttpWebResponse)wex.Response).StatusCode == HttpStatusCode.NotFound)
|
|
throw new FolderMissingException(wex);
|
|
|
|
//Other error, just re-throw
|
|
throw;
|
|
}
|
|
|
|
System.Xml.XmlNodeList lst = doc.SelectNodes("container/object");
|
|
|
|
//Perhaps the folder does not exist?
|
|
//The response should be 404 from the server, but it is not :(
|
|
if (lst.Count == 0 && markerUrl == "") //Only on first itteration
|
|
{
|
|
try { CreateFolder(); }
|
|
catch { } //Ignore
|
|
}
|
|
|
|
string lastItemName = "";
|
|
foreach (System.Xml.XmlNode n in lst)
|
|
{
|
|
string name = n["name"].InnerText;
|
|
long size;
|
|
DateTime mod;
|
|
|
|
if (!long.TryParse(n["bytes"].InnerText, out size))
|
|
size = -1;
|
|
if (!DateTime.TryParse(n["last_modified"].InnerText, out mod))
|
|
mod = new DateTime();
|
|
|
|
lastItemName = name;
|
|
files.Add(new FileEntry(name, size, mod, mod));
|
|
}
|
|
|
|
repeat = lst.Count == ITEM_LIST_LIMIT;
|
|
|
|
if (repeat)
|
|
markerUrl = "&marker=" + System.Web.HttpUtility.UrlEncode(lastItemName);
|
|
|
|
} while (repeat);
|
|
|
|
return files;
|
|
}
|
|
|
|
public void Put(string remotename, string filename)
|
|
{
|
|
using (System.IO.FileStream fs = System.IO.File.OpenRead(filename))
|
|
Put(remotename, fs);
|
|
}
|
|
|
|
public void Get(string remotename, string filename)
|
|
{
|
|
using (System.IO.FileStream fs = System.IO.File.Create(filename))
|
|
Get(remotename, fs);
|
|
}
|
|
|
|
public void Delete(string remotename)
|
|
{
|
|
HttpWebRequest req = CreateRequest("/" + remotename, "");
|
|
|
|
req.Method = "DELETE";
|
|
Utility.AsyncHttpRequest areq = new Utility.AsyncHttpRequest(req);
|
|
using (HttpWebResponse resp = (HttpWebResponse)areq.GetResponse())
|
|
if ((int)resp.StatusCode >= 300)
|
|
throw new WebException(Strings.CloudFiles.FileDeleteError, null, WebExceptionStatus.ProtocolError , resp);
|
|
else
|
|
using (resp.GetResponseStream())
|
|
{ }
|
|
}
|
|
|
|
public IList<ICommandLineArgument> SupportedCommands
|
|
{
|
|
get
|
|
{
|
|
return new List<ICommandLineArgument>(new ICommandLineArgument[] {
|
|
new CommandLineArgument("auth-password", CommandLineArgument.ArgumentType.Password, Strings.CloudFiles.DescriptionAuthPasswordShort, Strings.CloudFiles.DescriptionAuthPasswordLong),
|
|
new CommandLineArgument("auth-username", CommandLineArgument.ArgumentType.String, Strings.CloudFiles.DescriptionAuthUsernameShort, Strings.CloudFiles.DescriptionAuthUsernameLong),
|
|
new CommandLineArgument("cloudfiles-username", CommandLineArgument.ArgumentType.String, Strings.CloudFiles.DescriptionUsernameShort, Strings.CloudFiles.DescriptionUsernameLong, null, new string[] {"auth-username"} ),
|
|
new CommandLineArgument("cloudfiles-accesskey", CommandLineArgument.ArgumentType.Password, Strings.CloudFiles.DescriptionPasswordShort, Strings.CloudFiles.DescriptionPasswordLong, null, new string[] {"auth-password"}),
|
|
new CommandLineArgument("cloudfiles-uk-account", CommandLineArgument.ArgumentType.Boolean, Strings.CloudFiles.DescriptionUKAccountShort, string.Format(Strings.CloudFiles.DescriptionUKAccountLong, "cloudfiles-authentication-url", AUTH_URL_UK)),
|
|
new CommandLineArgument("cloudfiles-authentication-url", CommandLineArgument.ArgumentType.String, Strings.CloudFiles.DescriptionAuthenticationURLShort, string.Format(Strings.CloudFiles.DescriptionAuthenticationURLLong_v2, "cloudfiles-uk-account"), AUTH_URL_US),
|
|
});
|
|
}
|
|
}
|
|
|
|
public string Description
|
|
{
|
|
get { return Strings.CloudFiles.Description_v2; }
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region IBackend_v2 Members
|
|
|
|
public void Test()
|
|
{
|
|
//The "Folder not found" is not detectable :(
|
|
List();
|
|
}
|
|
|
|
public void CreateFolder()
|
|
{
|
|
HttpWebRequest createReq = CreateRequest("", "");
|
|
createReq.Method = "PUT";
|
|
Utility.AsyncHttpRequest areq = new Utility.AsyncHttpRequest(createReq);
|
|
using (HttpWebResponse resp = (HttpWebResponse)areq.GetResponse())
|
|
{ }
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region IDisposable Members
|
|
|
|
public void Dispose()
|
|
{
|
|
}
|
|
|
|
#endregion
|
|
|
|
#region IStreamingBackend Members
|
|
|
|
public bool SupportsStreaming
|
|
{
|
|
get { return true; }
|
|
}
|
|
|
|
public void Get(string remotename, System.IO.Stream stream)
|
|
{
|
|
HttpWebRequest req = CreateRequest("/" + remotename, "");
|
|
req.Method = "GET";
|
|
|
|
Utility.AsyncHttpRequest areq = new Utility.AsyncHttpRequest(req);
|
|
using (WebResponse resp = areq.GetResponse())
|
|
using (System.IO.Stream s = resp.GetResponseStream())
|
|
using (MD5CalculatingStream mds = new MD5CalculatingStream(s))
|
|
{
|
|
string md5Hash = resp.Headers["ETag"];
|
|
Utility.Utility.CopyStream(mds, stream);
|
|
|
|
if (mds.GetFinalHashString().ToLower() != md5Hash.ToLower())
|
|
throw new Exception(Strings.CloudFiles.ETagVerificationError);
|
|
}
|
|
}
|
|
|
|
public void Put(string remotename, System.IO.Stream stream)
|
|
{
|
|
HttpWebRequest req = CreateRequest("/" + remotename, "");
|
|
req.Method = "PUT";
|
|
req.ContentType = "application/octet-stream";
|
|
|
|
try { req.ContentLength = stream.Length; }
|
|
catch { }
|
|
|
|
//If we can pre-calculate the MD5 hash before transmission, do so
|
|
/*if (stream.CanSeek)
|
|
{
|
|
System.Security.Cryptography.MD5 md5 = System.Security.Cryptography.MD5.Create();
|
|
req.Headers["ETag"] = Core.Utility.ByteArrayAsHexString(md5.ComputeHash(stream)).ToLower();
|
|
stream.Seek(0, System.IO.SeekOrigin.Begin);
|
|
|
|
using (System.IO.Stream s = req.GetRequestStream())
|
|
Core.Utility.CopyStream(stream, s);
|
|
|
|
//Reset the timeout to the default value of 100 seconds to
|
|
// avoid blocking the GetResponse() call
|
|
req.Timeout = 100000;
|
|
|
|
//The server handles the eTag verification for us, and gives an error if the hash was a mismatch
|
|
using (HttpWebResponse resp = (HttpWebResponse)req.GetResponse())
|
|
if ((int)resp.StatusCode >= 300)
|
|
throw new WebException(Strings.CloudFiles.FileUploadError, null, WebExceptionStatus.ProtocolError, resp);
|
|
|
|
}
|
|
else //Otherwise use a client-side calculation
|
|
*/
|
|
//TODO: We cannot use the local MD5 calculation, because that could involve a throttled read,
|
|
// and may invoke various events
|
|
{
|
|
string fileHash = null;
|
|
|
|
Utility.AsyncHttpRequest areq = new Utility.AsyncHttpRequest(req);
|
|
using (System.IO.Stream s = areq.GetRequestStream())
|
|
using (MD5CalculatingStream mds = new MD5CalculatingStream(s))
|
|
{
|
|
Utility.Utility.CopyStream(stream, mds);
|
|
fileHash = mds.GetFinalHashString();
|
|
}
|
|
|
|
string md5Hash = null;
|
|
|
|
//We need to verify the eTag locally
|
|
try
|
|
{
|
|
using (HttpWebResponse resp = (HttpWebResponse)areq.GetResponse())
|
|
if ((int)resp.StatusCode >= 300)
|
|
throw new WebException(Strings.CloudFiles.FileUploadError, null, WebExceptionStatus.ProtocolError, resp);
|
|
else
|
|
md5Hash = resp.Headers["ETag"];
|
|
}
|
|
catch (WebException wex)
|
|
{
|
|
//Catch 404 and turn it into a FolderNotFound error
|
|
if (wex.Response is HttpWebResponse && ((HttpWebResponse)wex.Response).StatusCode == HttpStatusCode.NotFound)
|
|
throw new FolderMissingException(wex);
|
|
|
|
//Other error, just re-throw
|
|
throw;
|
|
}
|
|
|
|
|
|
if (md5Hash == null || md5Hash.ToLower() != fileHash.ToLower())
|
|
{
|
|
//Remove the broken file
|
|
try { Delete(remotename); }
|
|
catch { }
|
|
|
|
throw new Exception(Strings.CloudFiles.ETagVerificationError);
|
|
}
|
|
}
|
|
}
|
|
|
|
#endregion
|
|
|
|
private HttpWebRequest CreateRequest(string remotename, string query)
|
|
{
|
|
//If this is the first call, get an authentication token
|
|
if (string.IsNullOrEmpty(m_authToken) || string.IsNullOrEmpty(m_storageUrl))
|
|
{
|
|
HttpWebRequest authReq = (HttpWebRequest)HttpWebRequest.Create(m_authUrl);
|
|
authReq.Headers.Add("X-Auth-User", m_username);
|
|
authReq.Headers.Add("X-Auth-Key", m_password);
|
|
authReq.Method = "GET";
|
|
|
|
Utility.AsyncHttpRequest areq = new Utility.AsyncHttpRequest(authReq);
|
|
using (WebResponse resp = areq.GetResponse())
|
|
{
|
|
m_storageUrl = resp.Headers["X-Storage-Url"];
|
|
m_authToken = resp.Headers["X-Auth-Token"];
|
|
}
|
|
|
|
if (string.IsNullOrEmpty(m_authToken) || string.IsNullOrEmpty(m_storageUrl))
|
|
throw new Exception(Strings.CloudFiles.UnexpectedResponseError);
|
|
}
|
|
|
|
HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(m_storageUrl + UrlEncode(m_path + remotename) + query);
|
|
req.Headers.Add("X-Auth-Token", UrlEncode(m_authToken));
|
|
|
|
req.UserAgent = "Duplicati CloudFiles Backend v" + System.Reflection.Assembly.GetExecutingAssembly().GetName().Version.ToString();
|
|
req.KeepAlive = false;
|
|
req.PreAuthenticate = true;
|
|
req.AllowWriteStreamBuffering = false;
|
|
|
|
return req;
|
|
}
|
|
|
|
private string UrlEncode(string value)
|
|
{
|
|
return System.Web.HttpUtility.UrlEncode(value).Replace("+", "%20").Replace("%2f", "/");
|
|
}
|
|
}
|
|
}
|