Adding SameSite cookie information to .NET cookie handling

Author: jimevans

dotnet/src/webdriver/Cookie.cs

@@ -35,6 +35,7 @@ public class Cookie
         private string cookieValue;
         private string cookiePath;
         private string cookieDomain;
+        private string sameSite;
         private DateTime? cookieExpiry;
 
         /// <summary>
@@ -179,6 +180,16 @@ public virtual bool IsHttpOnly
             get { return false; }
         }
 
+        /// <summary>
+        /// Gets the SameSite setting for the cookie.
+        /// </summary>
+        [JsonProperty("sameSite")]
+        public virtual string SameSite
+        {
+            get { return this.sameSite; }
+            protected set { this.sameSite = value; }
+        }
+
         /// <summary>
         /// Gets the expiration date of the cookie.
         /// </summary>
@@ -258,7 +269,13 @@ public static Cookie FromDictionary(Dictionary<string, object> rawCookie)
                 isHttpOnly = bool.Parse(rawCookie["httpOnly"].ToString());
             }
 
-            return new ReturnedCookie(name, value, domain, path, expires, secure, isHttpOnly);
+            string sameSite = null;
+            if (rawCookie.ContainsKey("sameSite") && rawCookie["sameSite"] != null)
+            {
+                sameSite = rawCookie["sameSite"].ToString();
+            }
+
+            return new ReturnedCookie(name, value, domain, path, expires, secure, isHttpOnly, sameSite);
         }
 
         /// <summary>

dotnet/src/webdriver/Internal/ReturnedCookie.cs

@@ -1,4 +1,4 @@
-// <copyright file="ReturnedCookie.cs" company="WebDriver Committers">
+// <copyright file="ReturnedCookie.cs" company="WebDriver Committers">
 // Licensed to the Software Freedom Conservancy (SFC) under one
 // or more contributor license agreements. See the NOTICE file
 // distributed with this work for additional information
@@ -44,10 +44,31 @@ public class ReturnedCookie : Cookie
         /// or if it contains a semi-colon.</exception>
         /// <exception cref="ArgumentNullException">If the value or currentUrl is <see langword="null"/>.</exception>
         public ReturnedCookie(string name, string value, string domain, string path, DateTime? expiry, bool isSecure, bool isHttpOnly)
+            : this(name, value, domain, path, expiry, isSecure, isHttpOnly, null)
+        {
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="ReturnedCookie"/> class with a specific name,
+        /// value, domain, path and expiration date.
+        /// </summary>
+        /// <param name="name">The name of the cookie.</param>
+        /// <param name="value">The value of the cookie.</param>
+        /// <param name="domain">The domain of the cookie.</param>
+        /// <param name="path">The path of the cookie.</param>
+        /// <param name="expiry">The expiration date of the cookie.</param>
+        /// <param name="isSecure"><see langword="true"/> if the cookie is secure; otherwise <see langword="false"/></param>
+        /// <param name="isHttpOnly"><see langword="true"/> if the cookie is an HTTP-only cookie; otherwise <see langword="false"/></param>
+        /// <param name="sameSite">The SameSite value of cookie.</param>
+        /// <exception cref="ArgumentException">If the name is <see langword="null"/> or an empty string,
+        /// or if it contains a semi-colon.</exception>
+        /// <exception cref="ArgumentNullException">If the value or currentUrl is <see langword="null"/>.</exception>
+        public ReturnedCookie(string name, string value, string domain, string path, DateTime? expiry, bool isSecure, bool isHttpOnly, string sameSite)
             : base(name, value, domain, path, expiry)
         {
             this.isSecure = isSecure;
             this.isHttpOnly = isHttpOnly;
+            this.SameSite = sameSite;
         }
 
         /// <summary>

dotnet/test/common/CookieImplementationTest.cs

@@ -474,7 +474,7 @@ public void CanHandleSecureCookie()
         {
             driver.Url = EnvironmentManager.Instance.UrlBuilder.WhereIsSecure("animals");
 
-            Cookie addedCookie = new ReturnedCookie("fish", "cod", null, "/common/animals", null, true, false);
+            Cookie addedCookie = new ReturnedCookie("fish", "cod", null, "/common/animals", null, true, false, null);
             driver.Manage().Cookies.AddCookie(addedCookie);
 
             driver.Navigate().Refresh();
@@ -490,7 +490,7 @@ public void ShouldRetainCookieSecure()
         {
             driver.Url = EnvironmentManager.Instance.UrlBuilder.WhereIsSecure("animals");
 
-            ReturnedCookie addedCookie = new ReturnedCookie("fish", "cod", string.Empty, "/common/animals", null, true, false);
+            ReturnedCookie addedCookie = new ReturnedCookie("fish", "cod", string.Empty, "/common/animals", null, true, false, null);
 
             driver.Manage().Cookies.AddCookie(addedCookie);