98 lines
2.2 KiB
C#
98 lines
2.2 KiB
C#
/*
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* Copyright (c) 2023 ETH Zürich, Educational Development and Technology (LET)
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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using System;
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using System.IO;
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using System.Linq;
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using System.Net.Http;
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using System.Threading.Tasks;
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using Newtonsoft.Json;
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using Newtonsoft.Json.Linq;
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using SafeExamBrowser.Logging.Contracts;
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using SafeExamBrowser.Proctoring.ScreenProctoring.Service.Requests;
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namespace SafeExamBrowser.Proctoring.ScreenProctoring.Service
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{
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internal class Parser
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{
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private readonly ILogger logger;
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internal Parser(ILogger logger)
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{
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this.logger = logger;
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}
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internal bool IsTokenExpired(HttpContent content)
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{
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var isExpired = false;
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try
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{
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var json = JsonConvert.DeserializeObject(Extract(content)) as JObject;
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var error = json["error"].Value<string>();
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isExpired = error?.Equals("invalid_token", StringComparison.OrdinalIgnoreCase) == true;
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}
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catch (Exception e)
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{
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logger.Error("Failed to parse token expiration content!", e);
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}
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return isExpired;
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}
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internal bool TryParseOauth2Token(HttpContent content, out string oauth2Token)
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{
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oauth2Token = default;
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try
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{
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var json = JsonConvert.DeserializeObject(Extract(content)) as JObject;
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oauth2Token = json["access_token"].Value<string>();
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}
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catch (Exception e)
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{
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logger.Error("Failed to parse Oauth2 token!", e);
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}
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return oauth2Token != default;
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}
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internal bool TryParseSessionId(HttpResponseMessage response, out string sessionId)
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{
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sessionId = default;
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try
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{
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if (response.Headers.TryGetValues(Header.SESSION_ID, out var values))
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{
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sessionId = values.First();
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}
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}
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catch (Exception e)
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{
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logger.Error("Failed to parse session identifier!", e);
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}
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return sessionId != default;
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}
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private string Extract(HttpContent content)
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{
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var task = Task.Run(async () =>
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{
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return await content.ReadAsStreamAsync();
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});
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var stream = task.GetAwaiter().GetResult();
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var reader = new StreamReader(stream);
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return reader.ReadToEnd();
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}
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}
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}
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