Kenneth Skovhede
bd863016fa
Updated most backends to return the actual DNS names for cache invalidation.
464 lines
16 KiB
C#
464 lines
16 KiB
C#
using System;
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using System.Linq;
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using System.Collections.Generic;
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using System.Net;
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using Duplicati.Library.Interface;
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using Duplicati.Library.Utility;
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using Newtonsoft.Json;
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namespace Duplicati.Library.Backend.Sia
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{
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public class Sia : IBackend
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{
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private const string SIA_PASSWORD = "sia-password";
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private const string SIA_TARGETPATH = "sia-targetpath";
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private const string SIA_REDUNDANCY = "sia-redundancy";
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private string m_apihost;
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private int m_apiport;
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private string m_targetpath;
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private float m_redundancy;
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private System.Net.NetworkCredential m_user;
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public Sia() {
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}
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public Sia(string url, Dictionary<string, string> options)
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{
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var uri = new Utility.Uri(url);
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m_apihost = uri.Host;
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m_apiport = uri.Port;
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m_targetpath = uri.Path;
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m_redundancy = 1.5F;
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if (options.ContainsKey(SIA_REDUNDANCY))
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m_redundancy = float.Parse(options[SIA_REDUNDANCY]);
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if (m_apiport <= 0)
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m_apiport = 9980;
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if (options.ContainsKey(SIA_TARGETPATH))
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{
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m_targetpath = options[SIA_TARGETPATH];
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}
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while(m_targetpath.Contains("//"))
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m_targetpath = m_targetpath.Replace("//","/");
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while (m_targetpath.StartsWith("/", StringComparison.Ordinal))
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m_targetpath = m_targetpath.Substring(1);
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while (m_targetpath.EndsWith("/", StringComparison.Ordinal))
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m_targetpath = m_targetpath.Remove(m_targetpath.Length - 1);
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if (m_targetpath.Length == 0)
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m_targetpath = "backup";
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m_user = new System.Net.NetworkCredential();
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if (options.ContainsKey(SIA_PASSWORD))
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{
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m_user.Password = options[SIA_PASSWORD];
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}
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}
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private System.Net.HttpWebRequest CreateRequest(string endpoint)
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{
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string baseurl = "http://" + m_apihost + ":" + m_apiport;
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System.Net.HttpWebRequest req = (System.Net.HttpWebRequest)System.Net.HttpWebRequest.Create(baseurl + endpoint);
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if (!string.IsNullOrEmpty(m_user.Password))
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{
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req.Credentials = m_user;
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req.PreAuthenticate = true;
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}
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req.KeepAlive = false;
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req.UserAgent = string.Format("Sia-Agent (Duplicati SIA client {0})", System.Reflection.Assembly.GetExecutingAssembly().GetName().Version);
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return req;
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}
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private string getResponseBodyOnError(string context, System.Net.WebException wex)
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{
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string body = "";
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System.Net.HttpWebResponse response = (System.Net.HttpWebResponse)wex.Response;
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using (System.IO.Stream data = response.GetResponseStream())
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using (var reader = new System.IO.StreamReader(data))
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{
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body = reader.ReadToEnd();
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}
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return string.Format("{0} failed, response: {1}", context, body);
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}
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public class SiaFile
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{
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[JsonProperty("siapath")]
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public string Siapath { get; set; }
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[JsonProperty("available")]
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public bool Available { get; set; }
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[JsonProperty("filesize")]
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public long Filesize { get; set; }
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[JsonProperty("uploadprogress")]
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public float Uploadprogress { get; set; }
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[JsonProperty("redundancy")]
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public float Redundancy { get; set; }
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}
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public class SiaFileList
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{
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[JsonProperty("files")]
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public SiaFile[] Files { get; set; }
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}
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public class SiaDownloadFile
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{
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[JsonProperty("siapath")]
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public string Siapath { get; set; }
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[JsonProperty("destination")]
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public string Destination { get; set; }
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[JsonProperty("filesize")]
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public long Filesize { get; set; }
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[JsonProperty("received")]
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public long Received { get; set; }
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[JsonProperty("starttime")]
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public string Starttime { get; set; }
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[JsonProperty("error")]
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public string Error { get; set; }
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}
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public class SiaDownloadList
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{
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[JsonProperty("downloads")]
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public SiaDownloadFile[] Files { get; set; }
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}
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private SiaFileList GetFiles()
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{
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var fl = new SiaFileList();
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string endpoint = string.Format("/renter/files");
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try
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{
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System.Net.HttpWebRequest req = CreateRequest(endpoint);
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req.Method = System.Net.WebRequestMethods.Http.Get;
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Utility.AsyncHttpRequest areq = new Utility.AsyncHttpRequest(req);
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using (System.Net.HttpWebResponse resp = (System.Net.HttpWebResponse)areq.GetResponse())
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{
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int code = (int)resp.StatusCode;
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if (code < 200 || code >= 300)
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throw new System.Net.WebException(resp.StatusDescription, null, System.Net.WebExceptionStatus.ProtocolError, resp);
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var serializer = new JsonSerializer();
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using (var rs = areq.GetResponseStream())
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using (var sr = new System.IO.StreamReader(rs))
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using (var jr = new Newtonsoft.Json.JsonTextReader(sr))
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{
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fl = (SiaFileList)serializer.Deserialize(jr, typeof(SiaFileList));
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}
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}
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}
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catch (System.Net.WebException wex)
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{
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throw new Exception(getResponseBodyOnError(endpoint, wex));
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}
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return fl;
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}
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private bool IsUploadComplete(string siafilename)
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{
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SiaFileList fl = GetFiles();
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if (fl.Files == null)
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return false;
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foreach (var f in fl.Files)
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{
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if (f.Siapath == siafilename)
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{
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if (f.Available == true && f.Redundancy >= m_redundancy /* && f.Uploadprogress >= 100 */ )
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{
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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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private SiaDownloadList GetDownloads()
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{
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var fl = new SiaDownloadList();
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string endpoint = string.Format("/renter/downloads");
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try
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{
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System.Net.HttpWebRequest req = CreateRequest(endpoint);
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req.Method = System.Net.WebRequestMethods.Http.Get;
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Utility.AsyncHttpRequest areq = new Utility.AsyncHttpRequest(req);
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using (System.Net.HttpWebResponse resp = (System.Net.HttpWebResponse)areq.GetResponse())
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{
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int code = (int)resp.StatusCode;
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if (code < 200 || code >= 300)
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throw new System.Net.WebException(resp.StatusDescription, null, System.Net.WebExceptionStatus.ProtocolError, resp);
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var serializer = new JsonSerializer();
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using (var rs = areq.GetResponseStream())
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using (var sr = new System.IO.StreamReader(rs))
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using (var jr = new Newtonsoft.Json.JsonTextReader(sr))
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{
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fl = (SiaDownloadList)serializer.Deserialize(jr, typeof(SiaDownloadList));
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}
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}
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}
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catch (System.Net.WebException wex)
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{
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throw new Exception(getResponseBodyOnError(endpoint, wex));
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}
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return fl;
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}
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private bool IsDownloadComplete(string siafilename, string localname)
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{
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SiaDownloadList fl = GetDownloads();
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if (fl.Files == null)
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return false;
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foreach (var f in fl.Files)
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{
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if (f.Siapath == siafilename)
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{
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if (f.Error != "")
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{
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throw new Exception("failed to download " + siafilename + "err: " + f.Error);
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}
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if (f.Filesize == f.Received)
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{
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try
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{
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// Sia seems to keep the file open/locked for a while, make sure we can open it
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System.IO.FileStream fs = new System.IO.FileStream(localname, System.IO.FileMode.Open, System.IO.FileAccess.Read, System.IO.FileShare.ReadWrite);
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fs.Close();
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}
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catch (System.IO.IOException)
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{
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return false;
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}
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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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#region IBackend Members
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public void Test()
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{
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this.TestList();
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}
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public void CreateFolder()
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{
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// Dummy method, Sia doesn't have folders
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}
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public string DisplayName
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{
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get { return Strings.Sia.DisplayName; }
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}
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public string ProtocolKey
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{
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get { return "sia"; }
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}
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public IEnumerable<IFileEntry> List()
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{
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SiaFileList fl;
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try
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{
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fl = GetFiles();
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}
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catch (System.Net.WebException wex)
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{
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throw new Exception("failed to call /renter/files "+wex.Message);
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}
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if (fl.Files != null)
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{
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foreach (var f in fl.Files)
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{
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// Sia returns a complete file list, but we're only interested in files that are
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// in our target path
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if (f.Siapath.StartsWith(m_targetpath, StringComparison.Ordinal))
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{
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FileEntry fe = new FileEntry(f.Siapath.Substring(m_targetpath.Length + 1));
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fe.Size = f.Filesize;
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fe.IsFolder = false;
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yield return fe;
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}
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}
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}
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}
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public void Put(string remotename, string filename)
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{
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string endpoint ="";
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string siafile = m_targetpath + "/" + remotename;
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try {
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endpoint = string.Format("/renter/upload/{0}/{1}?source={2}",
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m_targetpath,
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Library.Utility.Uri.UrlEncode(remotename).Replace("+", "%20"),
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Library.Utility.Uri.UrlEncode(filename).Replace("+", "%20")
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);
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System.Net.HttpWebRequest req = CreateRequest(endpoint);
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req.Method = System.Net.WebRequestMethods.Http.Post;
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Utility.AsyncHttpRequest areq = new Utility.AsyncHttpRequest(req);
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using (System.Net.HttpWebResponse resp = (System.Net.HttpWebResponse)areq.GetResponse())
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{
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int code = (int)resp.StatusCode;
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if (code < 200 || code >= 300)
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throw new System.Net.WebException(resp.StatusDescription, null, System.Net.WebExceptionStatus.ProtocolError, resp);
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while (! IsUploadComplete( siafile ))
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{
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System.Threading.Thread.Sleep(5000);
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}
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}
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}
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catch (System.Net.WebException wex)
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{
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throw new Exception(getResponseBodyOnError(endpoint, wex));
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}
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}
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public void Get(string remotename, string localname)
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{
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string endpoint = "";
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string siafile = m_targetpath + "/" + remotename;
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string tmpfilename = localname + ".tmp";
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try
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{
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endpoint = string.Format("/renter/download/{0}/{1}?destination={2}",
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m_targetpath,
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Library.Utility.Uri.UrlEncode(remotename).Replace("+", "%20"),
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Library.Utility.Uri.UrlEncode(tmpfilename).Replace("+", "%20")
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);
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System.Net.HttpWebRequest req = CreateRequest(endpoint);
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req.Method = System.Net.WebRequestMethods.Http.Get;
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Utility.AsyncHttpRequest areq = new Utility.AsyncHttpRequest(req);
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using (System.Net.HttpWebResponse resp = (System.Net.HttpWebResponse)areq.GetResponse())
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{
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int code = (int)resp.StatusCode;
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if (code < 200 || code >= 300)
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throw new System.Net.WebException(resp.StatusDescription, null, System.Net.WebExceptionStatus.ProtocolError, resp);
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while (!IsDownloadComplete(siafile, localname))
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{
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System.Threading.Thread.Sleep(5000);
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}
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System.IO.File.Copy(tmpfilename, localname, true);
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try
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{
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System.IO.File.Delete(tmpfilename);
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} catch (Exception)
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{
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}
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}
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}
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catch (System.Net.WebException wex)
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{
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if (wex.Response is System.Net.HttpWebResponse && ((System.Net.HttpWebResponse)wex.Response).StatusCode == System.Net.HttpStatusCode.NotFound)
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throw new FileMissingException(wex);
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else
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throw new Exception(getResponseBodyOnError(endpoint, wex));
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}
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}
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public void Delete(string remotename)
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{
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string endpoint = "";
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try
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{
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endpoint = string.Format("/renter/delete/{0}/{1}",
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m_targetpath,
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Library.Utility.Uri.UrlEncode(remotename).Replace("+", "%20")
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);
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System.Net.HttpWebRequest req = CreateRequest(endpoint);
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req.Method = System.Net.WebRequestMethods.Http.Post;
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Utility.AsyncHttpRequest areq = new Utility.AsyncHttpRequest(req);
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using (System.Net.HttpWebResponse resp = (System.Net.HttpWebResponse)areq.GetResponse())
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{
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int code = (int)resp.StatusCode;
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if (code < 200 || code >= 300)
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throw new System.Net.WebException(resp.StatusDescription, null, System.Net.WebExceptionStatus.ProtocolError, resp);
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}
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}
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catch (System.Net.WebException wex)
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{
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if (wex.Response is System.Net.HttpWebResponse && ((System.Net.HttpWebResponse)wex.Response).StatusCode == System.Net.HttpStatusCode.NotFound)
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throw new FileMissingException(wex);
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else
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throw new Exception(getResponseBodyOnError(endpoint, wex));
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}
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}
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public IList<ICommandLineArgument> SupportedCommands
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{
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get
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{
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return new List<ICommandLineArgument>(new ICommandLineArgument[] {
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new CommandLineArgument(SIA_TARGETPATH, CommandLineArgument.ArgumentType.String, Strings.Sia.SiaPathDescriptionShort, Strings.Sia.SiaPathDescriptionLong, "/backup"),
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new CommandLineArgument(SIA_PASSWORD, CommandLineArgument.ArgumentType.Password, Strings.Sia.SiaPasswordShort, Strings.Sia.SiaPasswordLong, null),
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new CommandLineArgument(SIA_REDUNDANCY, CommandLineArgument.ArgumentType.String, Strings.Sia.SiaRedundancyDescriptionShort, Strings.Sia.SiaRedundancyDescriptionLong, "1.5"),
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});
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}
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}
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public string Description
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{
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get
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{
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return Strings.Sia.Description;
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}
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}
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public string[] DNSName
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{
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get { return new string[] { new System.Uri(m_apihost).Host }; }
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}
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#endregion
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#region IDisposable Members
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public void Dispose()
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{
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}
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#endregion
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}
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}
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