2019-06-07 08:59:07 +00:00
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using System;
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2021-10-12 10:14:33 +00:00
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using System.IO;
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using System.Net.Http;
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2019-06-07 08:59:07 +00:00
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using System.Security.Cryptography;
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using System.Text;
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2022-01-31 14:35:36 +00:00
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using System.Threading.Tasks;
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2020-02-17 08:58:14 +00:00
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using System.Web;
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2019-12-20 11:17:01 +00:00
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2020-02-17 08:58:14 +00:00
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using ASC.Common;
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using ASC.Core.Common.Configuration;
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2019-06-07 08:59:07 +00:00
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using ASC.FederatedLogin.LoginProviders;
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2020-09-18 07:59:23 +00:00
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using ASC.Security.Cryptography;
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2020-02-17 08:58:14 +00:00
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using ASC.Web.Studio.Utility;
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using Microsoft.Extensions.Configuration;
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2019-06-07 08:59:07 +00:00
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namespace ASC.Web.Core.Utility
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{
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public interface IUrlShortener
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2022-01-31 14:35:36 +00:00
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{
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Task<string> GetShortenLinkAsync(string shareLink);
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2019-06-07 08:59:07 +00:00
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}
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2020-10-19 15:53:15 +00:00
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[Scope]
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2019-09-24 10:32:12 +00:00
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public class UrlShortener
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2019-06-07 08:59:07 +00:00
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{
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2019-09-24 10:32:12 +00:00
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public bool Enabled { get { return !(Instance is NullShortener); } }
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2019-06-07 08:59:07 +00:00
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2019-09-24 10:32:12 +00:00
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private IUrlShortener _instance;
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public IUrlShortener Instance
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2019-06-07 08:59:07 +00:00
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{
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get
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{
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if (_instance == null)
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{
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2019-12-20 11:17:01 +00:00
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if (ConsumerFactory.Get<BitlyLoginProvider>().Enabled)
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2019-06-07 08:59:07 +00:00
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{
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2019-12-20 11:17:01 +00:00
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_instance = new BitLyShortener(ConsumerFactory);
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2019-06-07 08:59:07 +00:00
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}
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2020-05-22 09:41:14 +00:00
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else if (!string.IsNullOrEmpty(Configuration["web:url-shortener:value"]))
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2019-06-07 08:59:07 +00:00
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{
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2022-01-13 11:19:39 +00:00
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_instance = new OnlyoShortener(Configuration, CommonLinkUtility, MachinePseudoKeys, ClientFactory);
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2019-06-07 08:59:07 +00:00
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}
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else
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{
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_instance = new NullShortener();
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}
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}
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return _instance;
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2020-09-18 07:59:23 +00:00
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}
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set
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{
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_instance = value;
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2019-06-07 08:59:07 +00:00
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}
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2020-02-17 08:58:14 +00:00
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}
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2020-08-12 09:58:08 +00:00
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private IConfiguration Configuration { get; }
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private ConsumerFactory ConsumerFactory { get; }
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2020-09-18 07:59:23 +00:00
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private CommonLinkUtility CommonLinkUtility { get; }
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private MachinePseudoKeys MachinePseudoKeys { get; }
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private IHttpClientFactory ClientFactory { get; }
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2020-09-18 07:59:23 +00:00
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public UrlShortener(
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IConfiguration configuration,
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ConsumerFactory consumerFactory,
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CommonLinkUtility commonLinkUtility,
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2022-01-13 11:19:39 +00:00
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MachinePseudoKeys machinePseudoKeys,
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IHttpClientFactory clientFactory)
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2020-02-17 08:58:14 +00:00
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{
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Configuration = configuration;
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ConsumerFactory = consumerFactory;
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2020-09-18 07:59:23 +00:00
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CommonLinkUtility = commonLinkUtility;
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MachinePseudoKeys = machinePseudoKeys;
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ClientFactory = clientFactory;
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2019-06-07 08:59:07 +00:00
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}
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}
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public class BitLyShortener : IUrlShortener
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2020-02-17 08:58:14 +00:00
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{
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public BitLyShortener(ConsumerFactory consumerFactory)
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{
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ConsumerFactory = consumerFactory;
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}
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2022-01-31 14:35:36 +00:00
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private ConsumerFactory ConsumerFactory { get; }
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public Task<string> GetShortenLinkAsync(string shareLink)
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2019-06-07 08:59:07 +00:00
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{
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2022-01-31 14:35:36 +00:00
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return Task.FromResult(ConsumerFactory.Get<BitlyLoginProvider>().GetShortenLink(shareLink));
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2019-06-07 08:59:07 +00:00
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}
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}
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public class OnlyoShortener : IUrlShortener
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{
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private readonly string url;
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private readonly string internalUrl;
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private readonly byte[] sKey;
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2019-06-07 08:59:07 +00:00
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2022-01-13 11:19:39 +00:00
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private CommonLinkUtility CommonLinkUtility { get; }
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private IHttpClientFactory ClientFactory { get; }
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2019-06-07 08:59:07 +00:00
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2020-09-18 07:59:23 +00:00
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public OnlyoShortener(
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IConfiguration configuration,
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CommonLinkUtility commonLinkUtility,
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2022-01-13 11:19:39 +00:00
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MachinePseudoKeys machinePseudoKeys,
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IHttpClientFactory clientFactory)
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2019-06-07 08:59:07 +00:00
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{
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2020-05-22 09:41:14 +00:00
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url = configuration["web:url-shortener:value"];
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internalUrl = configuration["web:url-shortener:internal"];
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2020-09-18 07:59:23 +00:00
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sKey = machinePseudoKeys.GetMachineConstant();
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2019-06-07 08:59:07 +00:00
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2022-01-18 12:40:28 +00:00
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if (!url.EndsWith('/'))
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2020-02-17 08:58:14 +00:00
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url += '/';
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CommonLinkUtility = commonLinkUtility;
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ClientFactory = clientFactory;
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2020-02-17 08:58:14 +00:00
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}
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2022-01-31 14:35:36 +00:00
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public async Task<string> GetShortenLinkAsync(string shareLink)
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2021-10-12 10:14:33 +00:00
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{
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var request = new HttpRequestMessage();
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request.RequestUri = new Uri(internalUrl + "?url=" + HttpUtility.UrlEncode(shareLink));
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request.Headers.Add("Authorization", CreateAuthToken());
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request.Headers.Add("Encoding", Encoding.UTF8.ToString());//todo check
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2022-01-13 11:19:39 +00:00
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var httpClient = ClientFactory.CreateClient();
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2022-01-31 14:35:36 +00:00
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using var response = await httpClient.SendAsync(request);
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using var stream = await response.Content.ReadAsStreamAsync();
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2021-11-24 19:34:39 +00:00
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using var rs = new StreamReader(stream);
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2022-01-31 14:35:36 +00:00
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return CommonLinkUtility.GetFullAbsolutePath(url + await rs.ReadToEndAsync());
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2019-06-07 08:59:07 +00:00
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}
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private string CreateAuthToken(string pkey = "urlShortener")
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{
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2020-09-18 07:59:23 +00:00
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using var hasher = new HMACSHA1(sKey);
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2020-02-17 08:58:14 +00:00
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var now = DateTime.UtcNow.ToString("yyyyMMddHHmmss");
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var hash = Convert.ToBase64String(hasher.ComputeHash(Encoding.UTF8.GetBytes(string.Join("\n", now, pkey))));
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2022-01-14 13:12:37 +00:00
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return $"ASC {pkey}:{now}:{hash}";
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2019-06-07 08:59:07 +00:00
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}
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}
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public class NullShortener : IUrlShortener
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{
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public Task<string> GetShortenLinkAsync(string shareLink)
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2019-06-07 08:59:07 +00:00
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{
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return null;
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}
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2020-02-17 08:58:14 +00:00
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}
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2019-06-07 08:59:07 +00:00
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}
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