Revert "[SG-648] BEEEP-Refactor DuoApi class to use Httpclient (#2691)" (#2792)

This reverts commit f11c58e396.

src/Api/Controllers/TwoFactorController.cs

@@ -11,6 +11,7 @@ using Bit.Core.Repositories;
 using Bit.Core.Services;
 using Bit.Core.Settings;
 using Bit.Core.Utilities;
+using Bit.Core.Utilities.Duo;
 using Fido2NetLib;
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Identity;
@@ -152,7 +153,7 @@ public class TwoFactorController : Controller
         try
         {
             var duoApi = new DuoApi(model.IntegrationKey, model.SecretKey, model.Host);
-            await duoApi.JSONApiCall("GET", "/auth/v2/check");
+            duoApi.JSONApiCall<object>("GET", "/auth/v2/check");
         }
         catch (DuoException)
         {
@@ -209,7 +210,7 @@ public class TwoFactorController : Controller
         try
         {
             var duoApi = new DuoApi(model.IntegrationKey, model.SecretKey, model.Host);
-            await duoApi.JSONApiCall("GET", "/auth/v2/check");
+            duoApi.JSONApiCall<object>("GET", "/auth/v2/check");
         }
         catch (DuoException)
         {

src/Api/Models/Request/TwoFactorRequestModels.cs

@@ -3,7 +3,6 @@ using Bit.Api.Models.Request.Accounts;
 using Bit.Core.Entities;
 using Bit.Core.Enums;
 using Bit.Core.Models;
-using Bit.Core.Utilities;
 using Fido2NetLib;
 
 namespace Bit.Api.Models.Request;
@@ -105,7 +104,7 @@ public class UpdateTwoFactorDuoRequestModel : SecretVerificationRequestModel, IV
 
     public override IEnumerable<ValidationResult> Validate(ValidationContext validationContext)
     {
-        if (!DuoApi.ValidHost(Host))
+        if (!Core.Utilities.Duo.DuoApi.ValidHost(Host))
         {
             yield return new ValidationResult("Host is invalid.", new string[] { nameof(Host) });
         }

src/Core/Models/Api/Response/Duo/DuoResponseModel.cs

@@ -1,27 +0,0 @@
-using System.Text.Json.Serialization;
-
-namespace Bit.Core.Models.Api.Response.Duo;
-
-public class DuoResponseModel
-{
-    [JsonPropertyName("stat")]
-    public string Stat { get; set; }
-
-    [JsonPropertyName("code")]
-    public int? Code { get; set; }
-
-    [JsonPropertyName("message")]
-    public string Message { get; set; }
-
-    [JsonPropertyName("message_detail")]
-    public string MessageDetail { get; set; }
-
-    [JsonPropertyName("response")]
-    public Response Response { get; set; }
-}
-
-public class Response
-{
-    [JsonPropertyName("time")]
-    public int Time { get; set; }
-}

src/Core/Utilities/DuoApi.cs

@@ -15,9 +15,8 @@ using System.Text;
 using System.Text.Json;
 using System.Text.RegularExpressions;
 using System.Web;
-using Bit.Core.Models.Api.Response.Duo;
 
-namespace Bit.Core.Utilities;
+namespace Bit.Core.Utilities.Duo;
 
 public class DuoApi
 {
@@ -28,8 +27,6 @@ public class DuoApi
     private readonly string _ikey;
     private readonly string _skey;
 
-    private readonly HttpClient _httpClient = new();
-
     public DuoApi(string ikey, string skey, string host)
     {
         _ikey = ikey;
@@ -95,6 +92,11 @@ public class DuoApi
         return string.Concat("Basic ", Encode64(auth));
     }
 
+    public string ApiCall(string method, string path, Dictionary<string, string> parameters = null)
+    {
+        return ApiCall(method, path, parameters, 0, out var statusCode);
+    }
+
     /// <param name="timeout">The request timeout, in milliseconds.
     /// Specify 0 to use the system-default timeout. Use caution if
     /// you choose to specify a custom timeout - some API
@@ -102,7 +104,8 @@ public class DuoApi
     /// return a response until an out-of-band authentication process
     /// has completed. In some cases, this may take as much as a
     /// small number of minutes.</param>
-    private async Task<(string result, HttpStatusCode statusCode)> ApiCall(string method, string path, Dictionary<string, string> parameters, int timeout)
+    public string ApiCall(string method, string path, Dictionary<string, string> parameters, int timeout,
+        out HttpStatusCode statusCode)
     {
         if (parameters == null)
         {
@@ -118,39 +121,58 @@ public class DuoApi
                 query = "?" + canonParams;
             }
         }
-        var url = $"{UrlScheme}://{_host}{path}{query}";
+        var url = string.Format("{0}://{1}{2}{3}", UrlScheme, _host, path, query);
 
         var dateString = RFC822UtcNow();
         var auth = Sign(method, path, canonParams, dateString);
 
-        var request = new HttpRequestMessage
+        var request = (HttpWebRequest)WebRequest.Create(url);
-        {
+        request.Method = method;
-            Method = new HttpMethod(method),
+        request.Accept = "application/json";
-            RequestUri = new Uri(url),
-        };
         request.Headers.Add("Authorization", auth);
         request.Headers.Add("X-Duo-Date", dateString);
-        request.Headers.UserAgent.ParseAdd(UserAgent);
+        request.UserAgent = UserAgent;
-
-        if (timeout > 0)
-        {
-            _httpClient.Timeout = TimeSpan.FromMilliseconds(timeout);
-        }
 
         if (method.Equals("POST") || method.Equals("PUT"))
         {
-            request.Content = new StringContent(canonParams, Encoding.UTF8, "application/x-www-form-urlencoded");
+            var data = Encoding.UTF8.GetBytes(canonParams);
+            request.ContentType = "application/x-www-form-urlencoded";
+            request.ContentLength = data.Length;
+            using (var requestStream = request.GetRequestStream())
+            {
+                requestStream.Write(data, 0, data.Length);
+            }
+        }
+        if (timeout > 0)
+        {
+            request.Timeout = timeout;
         }
 
-        var response = await _httpClient.SendAsync(request);
+        // Do the request and process the result.
-        var result = await response.Content.ReadAsStringAsync();
+        HttpWebResponse response;
-        var statusCode = response.StatusCode;
+        try
-        return (result, statusCode);
+        {
+            response = (HttpWebResponse)request.GetResponse();
+        }
+        catch (WebException ex)
+        {
+            response = (HttpWebResponse)ex.Response;
+            if (response == null)
+            {
+                throw;
+            }
+        }
+        using (var reader = new StreamReader(response.GetResponseStream()))
+        {
+            statusCode = response.StatusCode;
+            return reader.ReadToEnd();
+        }
     }
 
-    public async Task<Response> JSONApiCall(string method, string path, Dictionary<string, string> parameters = null)
+    public T JSONApiCall<T>(string method, string path, Dictionary<string, string> parameters = null)
+        where T : class
     {
-        return await JSONApiCall(method, path, parameters, 0);
+        return JSONApiCall<T>(method, path, parameters, 0);
     }
 
     /// <param name="timeout">The request timeout, in milliseconds.
@@ -160,18 +182,27 @@ public class DuoApi
     /// return a response until an out-of-band authentication process
     /// has completed. In some cases, this may take as much as a
     /// small number of minutes.</param>
-    private async Task<Response> JSONApiCall(string method, string path, Dictionary<string, string> parameters, int timeout)
+    public T JSONApiCall<T>(string method, string path, Dictionary<string, string> parameters, int timeout)
+        where T : class
     {
-        var (res, statusCode) = await ApiCall(method, path, parameters, timeout);
+        var res = ApiCall(method, path, parameters, timeout, out var statusCode);
         try
         {
-            var obj = JsonSerializer.Deserialize<DuoResponseModel>(res);
+            // TODO: We should deserialize this into our own DTO and not work on dictionaries.
-            if (obj.Stat == "OK")
+            var dict = JsonSerializer.Deserialize<Dictionary<string, object>>(res);
+            if (dict["stat"].ToString() == "OK")
             {
-                return obj.Response;
+                return JsonSerializer.Deserialize<T>(dict["response"].ToString());
             }
 
-            throw new ApiException(obj.Code ?? 0, (int)statusCode, obj.Message, obj.MessageDetail);
+            var check = ToNullableInt(dict["code"].ToString());
+            var code = check.GetValueOrDefault(0);
+            var messageDetail = string.Empty;
+            if (dict.ContainsKey("message_detail"))
+            {
+                messageDetail = dict["message_detail"].ToString();
+            }
+            throw new ApiException(code, (int)statusCode, dict["message"].ToString(), messageDetail);
         }
         catch (ApiException)
         {