Initial commit.

2024-04-18 01:44:37 +02:00
parent 524ea4c0e1
commit 12d3814626
671 changed files with 77295 additions and 0 deletions
--- a/Wino.Core.Domain/Models/Authorization/GoogleAuthorizationRequest.cs
+++ b/Wino.Core.Domain/Models/Authorization/GoogleAuthorizationRequest.cs
@@ -0,0 +1,72 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using Wino.Core.Domain.Exceptions;
+
+namespace Wino.Core.Domain.Models.Authorization
+{
+    public class GoogleAuthorizationRequest
+    {
+        public const string RedirectUri = "google.pw.oauth2:/oauth2redirect";
+
+        const string authorizationEndpoint = "https://accounts.google.com/o/oauth2/v2/auth";
+        const string CodeChallangeMethod = "S256";
+
+        public GoogleAuthorizationRequest(string state, string codeVerifier, string codeChallange)
+        {
+            State = state;
+            CodeVerifier = codeVerifier;
+            CodeChallange = codeChallange;
+        }
+
+        // Pre
+        public string State { get; set; }
+        public string CodeVerifier { get; set; }
+        public string CodeChallange { get; set; }
+        public string ClientId { get; set; }
+
+        // Post
+        public string AuthorizationCode { get; set; }
+
+        public string BuildRequest(string clientId)
+        {
+            ClientId = clientId;
+
+            // Creates the OAuth 2.0 authorization request.
+            return string.Format("{0}?response_type=code&scope=https://mail.google.com/ https://www.googleapis.com/auth/gmail.labels&redirect_uri={1}&client_id={2}&state={3}&code_challenge={4}&code_challenge_method={5}",
+                authorizationEndpoint,
+                Uri.EscapeDataString(RedirectUri),
+                ClientId,
+                State,
+                CodeChallange,
+                CodeChallangeMethod);
+        }
+
+        public void ValidateAuthorizationCode(Uri callbackUri)
+        {
+            if (callbackUri == null)
+                throw new GoogleAuthenticationException(Translator.Exception_GoogleAuthCallbackNull);
+
+            string queryString = callbackUri.Query;
+
+            Dictionary<string, string> queryStringParams = queryString.Substring(1).Split('&').ToDictionary(c => c.Split('=')[0], c => Uri.UnescapeDataString(c.Split('=')[1]));
+
+            if (queryStringParams.ContainsKey("error"))
+                throw new GoogleAuthenticationException(string.Format(Translator.Exception_GoogleAuthError, queryStringParams["error"]));
+
+            if (!queryStringParams.ContainsKey("code") || !queryStringParams.ContainsKey("state"))
+                throw new GoogleAuthenticationException(Translator.Exception_GoogleAuthCorruptedCode + queryString);
+
+            // Gets the Authorization code & state
+            string code = queryStringParams["code"];
+            string incomingState = queryStringParams["state"];
+
+            // Compares the receieved state to the expected value, to ensure that
+            // this app made the request which resulted in authorization
+            if (incomingState != State)
+                throw new GoogleAuthenticationException(string.Format(Translator.Exception_GoogleAuthInvalidResponse, incomingState));
+
+            AuthorizationCode = code;
+        }
+    }
+}