283 lines
11 KiB
C#
283 lines
11 KiB
C#
// (c) Copyright Ascensio System SIA 2010-2022
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//
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// This program is a free software product.
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// You can redistribute it and/or modify it under the terms
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// of the GNU Affero General Public License (AGPL) version 3 as published by the Free Software
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// Foundation. In accordance with Section 7(a) of the GNU AGPL its Section 15 shall be amended
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// to the effect that Ascensio System SIA expressly excludes the warranty of non-infringement of
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// any third-party rights.
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//
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// This program is distributed WITHOUT ANY WARRANTY, without even the implied warranty
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// of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. For details, see
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// the GNU AGPL at: http://www.gnu.org/licenses/agpl-3.0.html
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//
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// You can contact Ascensio System SIA at Lubanas st. 125a-25, Riga, Latvia, EU, LV-1021.
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//
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// The interactive user interfaces in modified source and object code versions of the Program must
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// display Appropriate Legal Notices, as required under Section 5 of the GNU AGPL version 3.
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//
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// Pursuant to Section 7(b) of the License you must retain the original Product logo when
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// distributing the program. Pursuant to Section 7(e) we decline to grant you any rights under
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// trademark law for use of our trademarks.
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//
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// All the Product's GUI elements, including illustrations and icon sets, as well as technical writing
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// content are licensed under the terms of the Creative Commons Attribution-ShareAlike 4.0
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// International. See the License terms at http://creativecommons.org/licenses/by-sa/4.0/legalcode
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namespace ASC.FederatedLogin.LoginProviders;
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[Scope]
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public class GosUslugiLoginProvider : BaseLoginProvider<GosUslugiLoginProvider>
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{
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public string BaseDomain => this["gosUslugiDomain"];
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public override string CodeUrl => BaseDomain + "/aas/oauth2/ac";
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public override string AccessTokenUrl => BaseDomain + "/aas/oauth2/te";
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public override string ClientID => this["gosUslugiClientId"];
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public override string ClientSecret => this["gosUslugiCert"];
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public override string RedirectUri => this["gosUslugiRedirectUrl"];
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public override string Scopes => "fullname birthdate gender email";
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private string GosUslugiProfileUrl => BaseDomain + "/rs/prns/";
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private readonly RequestHelper _requestHelper;
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public GosUslugiLoginProvider() { }
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public GosUslugiLoginProvider(
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OAuth20TokenHelper oAuth20TokenHelper,
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TenantManager tenantManager,
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CoreBaseSettings coreBaseSettings,
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CoreSettings coreSettings,
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IConfiguration configuration,
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ICacheNotify<ConsumerCacheItem> cache,
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ConsumerFactory consumerFactory,
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Signature signature,
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InstanceCrypto instanceCrypto,
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RequestHelper requestHelper,
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string name, int order, Dictionary<string, string> props, Dictionary<string, string> additional = null)
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: base(oAuth20TokenHelper, tenantManager, coreBaseSettings, coreSettings, configuration, cache, consumerFactory, signature, instanceCrypto, name, order, props, additional)
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{
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_requestHelper = requestHelper;
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}
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public override LoginProfile ProcessAuthoriztion(HttpContext context, IDictionary<string, string> @params, IDictionary<string, string> additionalStateArgs)
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{
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try
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{
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var token = Auth(context, Scopes, out var redirect);
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if (redirect)
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{
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return null;
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}
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if (token == null)
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{
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throw new Exception("Login failed");
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}
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return GetLoginProfile(token.AccessToken);
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}
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catch (ThreadAbortException)
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{
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throw;
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}
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catch (Exception ex)
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{
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return LoginProfile.FromError(Signature, InstanceCrypto, ex);
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}
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}
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public override LoginProfile GetLoginProfile(string accessToken)
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{
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#pragma warning disable CS0618 // Type or member is obsolete
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var tokenPayloadString = JwtBuilder.Create()
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.WithAlgorithm(new HMACSHA256Algorithm())
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.Decode(accessToken);
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#pragma warning restore CS0618 // Type or member is obsolete
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var tokenPayload = JObject.Parse(tokenPayloadString);
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if (tokenPayload == null)
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{
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throw new Exception("Payload is incorrect");
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}
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var oid = tokenPayload.Value<string>("urn:esia:sbj_id");
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var userInfoString = _requestHelper.PerformRequest(GosUslugiProfileUrl + oid, "application/x-www-form-urlencoded", headers: new Dictionary<string, string> { { "Authorization", "Bearer " + accessToken } });
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var userInfo = JObject.Parse(userInfoString);
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if (userInfo == null)
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{
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throw new Exception("userinfo is incorrect");
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}
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var profile = new LoginProfile(Signature, InstanceCrypto)
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{
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Id = oid,
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FirstName = userInfo.Value<string>("firstName"),
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LastName = userInfo.Value<string>("lastName"),
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Provider = ProviderConstants.GosUslugi,
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};
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var userContactsString = _requestHelper.PerformRequest(GosUslugiProfileUrl + oid + "/ctts", "application/x-www-form-urlencoded", headers: new Dictionary<string, string> { { "Authorization", "Bearer " + accessToken } });
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var userContacts = JObject.Parse(userContactsString);
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if (userContacts == null)
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{
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throw new Exception("usercontacts is incorrect");
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}
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var contactElements = userContacts.Value<JArray>("elements");
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if (contactElements == null)
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{
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throw new Exception("usercontacts elements is incorrect");
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}
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foreach (var contactElement in contactElements.ToObject<List<string>>())
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{
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var userContactString = _requestHelper.PerformRequest(contactElement, "application/x-www-form-urlencoded", headers: new Dictionary<string, string> { { "Authorization", "Bearer " + accessToken } });
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var userContact = JObject.Parse(userContactString);
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if (userContact == null)
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{
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throw new Exception("usercontacts is incorrect");
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}
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var type = userContact.Value<string>("type");
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if (type != "EML")
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{
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continue;
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}
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profile.EMail = userContact.Value<string>("value");
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break;
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}
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return profile;
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}
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protected override OAuth20Token Auth(HttpContext context, string scopes, out bool redirect, IDictionary<string, string> additionalArgs = null, IDictionary<string, string> additionalStateArgs = null)
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{
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var error = context.Request.Query["error"];
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if (!string.IsNullOrEmpty(error))
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{
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if (error == "access_denied")
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{
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error = "Canceled at provider";
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}
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throw new Exception(error);
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}
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var code = context.Request.Query["code"];
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if (string.IsNullOrEmpty(code))
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{
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RequestCode(context, scopes);
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redirect = true;
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return null;
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}
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redirect = false;
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var state = context.Request.Query["state"];
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return GetAccessToken(state, code);
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}
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private void RequestCode(HttpContext context, string scope = null)
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{
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var timestamp = DateTime.UtcNow.ToString("yyyy.MM.dd HH:mm:ss +0000");
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var state = Guid.NewGuid().ToString();//HttpContext.Current.Request.GetUrlRewriter().AbsoluteUri;
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var msg = scope + timestamp + ClientID + state;
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var encodedSignature = SignMsg(msg);
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var clientSecret = WebEncoders.Base64UrlEncode(encodedSignature);
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var requestParams = new Dictionary<string, string>
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{
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{ "client_id", ClientID },
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{ "client_secret", clientSecret },
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{ "redirect_uri", RedirectUri },
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{ "scope", scope },
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{ "response_type", "code" },
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{ "state", state },
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{ "timestamp", timestamp },
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{ "access_type", "online" },
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{ "display", "popup" }
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};
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var requestQuery = string.Join("&", requestParams.Select(pair => pair.Key + "=" + HttpUtility.UrlEncode(pair.Value)));//.Replace("+", "%2b");
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var redURL = CodeUrl + "?" + requestQuery;
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context.Response.Redirect(redURL, true);
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}
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private OAuth20Token GetAccessToken(string state, string code)
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{
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var timestamp = DateTime.UtcNow.ToString("yyyy.MM.dd HH:mm:ss +0000");
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var msg = Scopes + timestamp + ClientID + state;
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var encodedSignature = SignMsg(msg);
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var clientSecret = WebEncoders.Base64UrlEncode(encodedSignature);
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var requestParams = new Dictionary<string, string>
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{
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{ "client_id", ClientID },
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{ "code", code },
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{ "grant_type", "authorization_code" },
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{ "client_secret", clientSecret },
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{ "state", state },
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{ "redirect_uri", RedirectUri },
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{ "scope", Scopes },
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{ "timestamp", timestamp },
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{ "token_type", "Bearer" }
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};
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var requestQuery = string.Join("&", requestParams.Select(pair => pair.Key + "=" + HttpUtility.UrlEncode(pair.Value)));
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var result = _requestHelper.PerformRequest(AccessTokenUrl, "application/x-www-form-urlencoded", "POST", requestQuery);
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return OAuth20Token.FromJson(result);
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}
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private X509Certificate2 GetSignerCert()
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{
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var storeMy = new X509Store(StoreName.Root, StoreLocation.LocalMachine);
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storeMy.Open(OpenFlags.ReadOnly);
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var certColl = storeMy.Certificates.Find(X509FindType.FindBySubjectKeyIdentifier, ClientSecret, false);
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storeMy.Close();
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if (certColl.Count == 0)
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{
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throw new Exception("Certificate not found");
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}
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return certColl[0];
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}
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private byte[] SignMsg(string msg)
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{
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var signerCert = GetSignerCert();
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var msgBytes = Encoding.UTF8.GetBytes(msg);
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var contentInfo = new ContentInfo(msgBytes);
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var signedCms = new SignedCms(contentInfo, true);
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var cmsSigner = new CmsSigner(signerCert);
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signedCms.ComputeSignature(cmsSigner);
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return signedCms.Encode();
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}
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//private static bool VerifyMsg(Byte[] msg, byte[] encodedSignature)
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//{
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// ContentInfo contentInfo = new ContentInfo(msg);
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// SignedCms signedCms = new SignedCms(contentInfo, true);
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// signedCms.Decode(encodedSignature);
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// try
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// {
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// signedCms.CheckSignature(true);
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// }
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// catch (System.Security.Cryptography.CryptographicException e)
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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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