mirror of https://github.com/lidarr/Lidarr
278 lines
11 KiB
C#
278 lines
11 KiB
C#
using System.Collections.Generic;
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using System.Net;
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using System.Net.Http;
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using System.Security.Cryptography;
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using NLog;
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using NzbDrone.Common.Cache;
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using NzbDrone.Common.Extensions;
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using NzbDrone.Common.Http;
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using NzbDrone.Common.Serializer;
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using NzbDrone.Core.Download.Clients.FreeboxDownload.Responses;
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namespace NzbDrone.Core.Download.Clients.FreeboxDownload
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{
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public interface IFreeboxDownloadProxy
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{
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void Authenticate(FreeboxDownloadSettings settings);
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string AddTaskFromUrl(string url, string directory, bool addPaused, bool addFirst, double? seedRatio, FreeboxDownloadSettings settings);
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string AddTaskFromFile(string fileName, byte[] fileContent, string directory, bool addPaused, bool addFirst, double? seedRatio, FreeboxDownloadSettings settings);
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void DeleteTask(string id, bool deleteData, FreeboxDownloadSettings settings);
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FreeboxDownloadConfiguration GetDownloadConfiguration(FreeboxDownloadSettings settings);
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List<FreeboxDownloadTask> GetTasks(FreeboxDownloadSettings settings);
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}
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public class FreeboxDownloadProxy : IFreeboxDownloadProxy
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{
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private readonly IHttpClient _httpClient;
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private readonly Logger _logger;
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private ICached<string> _authSessionTokenCache;
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public FreeboxDownloadProxy(ICacheManager cacheManager, IHttpClient httpClient, Logger logger)
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{
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_httpClient = httpClient;
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_logger = logger;
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_authSessionTokenCache = cacheManager.GetCache<string>(GetType(), "authSessionToken");
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}
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public void Authenticate(FreeboxDownloadSettings settings)
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{
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var request = BuildRequest(settings).Resource("/login").Build();
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var response = ProcessRequest<FreeboxLogin>(request, settings);
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if (response.Result.LoggedIn == false)
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{
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throw new DownloadClientAuthenticationException("Not logged");
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}
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}
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public string AddTaskFromUrl(string url, string directory, bool addPaused, bool addFirst, double? seedRatio, FreeboxDownloadSettings settings)
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{
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var request = BuildRequest(settings).Resource("/downloads/add").Post();
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request.Headers.ContentType = "application/x-www-form-urlencoded";
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request.AddFormParameter("download_url", System.Web.HttpUtility.UrlPathEncode(url));
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if (!directory.IsNullOrWhiteSpace())
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{
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request.AddFormParameter("download_dir", directory);
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}
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var response = ProcessRequest<FreeboxDownloadTask>(request.Build(), settings);
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SetTorrentSettings(response.Result.Id, addPaused, addFirst, seedRatio, settings);
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return response.Result.Id;
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}
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public string AddTaskFromFile(string fileName, byte[] fileContent, string directory, bool addPaused, bool addFirst, double? seedRatio, FreeboxDownloadSettings settings)
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{
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var request = BuildRequest(settings).Resource("/downloads/add").Post();
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request.AddFormUpload("download_file", fileName, fileContent, "multipart/form-data");
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if (directory.IsNotNullOrWhiteSpace())
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{
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request.AddFormParameter("download_dir", directory);
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}
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var response = ProcessRequest<FreeboxDownloadTask>(request.Build(), settings);
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SetTorrentSettings(response.Result.Id, addPaused, addFirst, seedRatio, settings);
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return response.Result.Id;
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}
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public void DeleteTask(string id, bool deleteData, FreeboxDownloadSettings settings)
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{
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var uri = "/downloads/" + id;
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if (deleteData == true)
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{
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uri += "/erase";
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}
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var request = BuildRequest(settings).Resource(uri).Build();
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request.Method = HttpMethod.Delete;
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ProcessRequest<string>(request, settings);
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}
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public FreeboxDownloadConfiguration GetDownloadConfiguration(FreeboxDownloadSettings settings)
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{
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var request = BuildRequest(settings).Resource("/downloads/config/").Build();
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return ProcessRequest<FreeboxDownloadConfiguration>(request, settings).Result;
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}
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public List<FreeboxDownloadTask> GetTasks(FreeboxDownloadSettings settings)
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{
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var request = BuildRequest(settings).Resource("/downloads/").Build();
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return ProcessRequest<List<FreeboxDownloadTask>>(request, settings).Result;
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}
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private static string BuildCachedHeaderKey(FreeboxDownloadSettings settings)
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{
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return $"{settings.Host}:{settings.AppId}:{settings.AppToken}";
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}
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private void SetTorrentSettings(string id, bool addPaused, bool addFirst, double? seedRatio, FreeboxDownloadSettings settings)
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{
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var request = BuildRequest(settings).Resource("/downloads/" + id).Build();
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request.Method = HttpMethod.Put;
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var body = new Dictionary<string, object> { };
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if (addPaused)
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{
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body.Add("status", FreeboxDownloadTaskStatus.Stopped.ToString().ToLower());
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}
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if (addFirst)
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{
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body.Add("queue_pos", "1");
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}
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if (seedRatio != null)
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{
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// 0 means unlimited seeding
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body.Add("stop_ratio", seedRatio);
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}
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if (body.Count == 0)
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{
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return;
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}
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request.SetContent(body.ToJson());
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ProcessRequest<FreeboxDownloadTask>(request, settings);
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}
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private string GetSessionToken(HttpRequestBuilder requestBuilder, FreeboxDownloadSettings settings, bool force = false)
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{
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var sessionToken = _authSessionTokenCache.Find(BuildCachedHeaderKey(settings));
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if (sessionToken == null || force)
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{
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_authSessionTokenCache.Remove(BuildCachedHeaderKey(settings));
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_logger.Debug($"Client needs a new Session Token to reach the API with App ID '{settings.AppId}'");
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// Obtaining a Session Token (from official documentation):
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// To protect the app_token secret, it will never be used directly to authenticate the
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// application, instead the API will provide a challenge the app will combine to its
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// app_token to open a session and get a session_token.
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// The validity of the session_token is limited in time and the app will have to renew
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// this session_token once in a while.
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// Retrieving the 'challenge' value (it changes frequently and have a limited time validity)
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// needed to build password
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var challengeRequest = requestBuilder.Resource("/login").Build();
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challengeRequest.Method = HttpMethod.Get;
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var challenge = ProcessRequest<FreeboxLogin>(challengeRequest, settings).Result.Challenge;
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// The password is computed using the 'challenge' value and the 'app_token' ('App Token' setting)
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var enc = System.Text.Encoding.ASCII;
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var hmac = new HMACSHA1(enc.GetBytes(settings.AppToken));
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hmac.Initialize();
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var buffer = enc.GetBytes(challenge);
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var password = System.BitConverter.ToString(hmac.ComputeHash(buffer)).Replace("-", "").ToLower();
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// Both 'app_id' ('App ID' setting) and computed password are set to get a Session Token
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var sessionRequest = requestBuilder.Resource("/login/session").Post().Build();
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var body = new Dictionary<string, object>
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{
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{ "app_id", settings.AppId },
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{ "password", password }
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};
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sessionRequest.SetContent(body.ToJson());
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sessionToken = ProcessRequest<FreeboxLogin>(sessionRequest, settings).Result.SessionToken;
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_authSessionTokenCache.Set(BuildCachedHeaderKey(settings), sessionToken);
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_logger.Debug($"New Session Token stored in cache for App ID '{settings.AppId}', ready to reach API");
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}
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return sessionToken;
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}
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private HttpRequestBuilder BuildRequest(FreeboxDownloadSettings settings, bool authentication = true)
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{
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var requestBuilder = new HttpRequestBuilder(settings.UseSsl, settings.Host, settings.Port, settings.ApiUrl)
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{
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LogResponseContent = true
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};
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requestBuilder.Headers.ContentType = "application/json";
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if (authentication == true)
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{
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requestBuilder.SetHeader("X-Fbx-App-Auth", GetSessionToken(requestBuilder, settings));
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}
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return requestBuilder;
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}
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private FreeboxResponse<T> ProcessRequest<T>(HttpRequest request, FreeboxDownloadSettings settings)
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{
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request.LogResponseContent = true;
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request.SuppressHttpError = true;
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HttpResponse response;
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try
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{
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response = _httpClient.Execute(request);
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}
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catch (HttpRequestException ex)
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{
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throw new DownloadClientUnavailableException($"Unable to reach Freebox API. Verify 'Host', 'Port' or 'Use SSL' settings. (Error: {ex.Message})", ex);
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}
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catch (WebException ex)
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{
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throw new DownloadClientUnavailableException("Unable to connect to Freebox API, please check your settings", ex);
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}
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if (response.StatusCode == HttpStatusCode.Forbidden || response.StatusCode == HttpStatusCode.Unauthorized)
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{
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_authSessionTokenCache.Remove(BuildCachedHeaderKey(settings));
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var responseContent = Json.Deserialize<FreeboxResponse<FreeboxLogin>>(response.Content);
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var msg = $"Authentication to Freebox API failed. Reason: {responseContent.GetErrorDescription()}";
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_logger.Error(msg);
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throw new DownloadClientAuthenticationException(msg);
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}
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else if (response.StatusCode == HttpStatusCode.NotFound)
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{
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throw new FreeboxDownloadException("Unable to reach Freebox API. Verify 'API URL' setting for base URL and version.");
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}
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else if (response.StatusCode == HttpStatusCode.OK)
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{
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var responseContent = Json.Deserialize<FreeboxResponse<T>>(response.Content);
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if (responseContent.Success)
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{
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return responseContent;
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}
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else
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{
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var msg = $"Freebox API returned error: {responseContent.GetErrorDescription()}";
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_logger.Error(msg);
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throw new DownloadClientException(msg);
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}
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}
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else
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{
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throw new DownloadClientException("Unable to connect to Freebox, please check your settings.");
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}
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}
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}
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}
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