#5331: Updated the ReCaptcha API to the latest version (2.0)

Work Item: 5331

src/Orchard.Web/Modules/Orchard.AntiSpam/Drivers/ReCaptchaPartDriver.cs

@@ -17,8 +17,7 @@ namespace Orchard.AntiSpam.Drivers {
     public class ReCaptchaPartDriver : ContentPartDriver<ReCaptchaPart> {
         private readonly INotifier _notifier;
         private readonly IWorkContextAccessor _workContextAccessor;
-        private const string ReCaptchaUrl = "http://www.google.com/recaptcha/api";
-        private const string ReCaptchaSecureUrl = "https://www.google.com/recaptcha/api";
+        private const string ReCaptchaSecureUrl = "https://www.google.com/recaptcha/api/siteverify";
 
         public ReCaptchaPartDriver(
             INotifier notifier,
@@ -67,67 +66,55 @@ namespace Orchard.AntiSpam.Drivers {
                 return null;
             }
 
-            var submitViewModel = new ReCaptchaPartSubmitViewModel();
-
-            if(updater.TryUpdateModel(submitViewModel, String.Empty, null, null)) {
             var context = workContext.HttpContext;
 
             try {
                 var result = ExecuteValidateRequest(
                     settings.PrivateKey,
                     context.Request.ServerVariables["REMOTE_ADDR"],
-                        submitViewModel.recaptcha_challenge_field,
-                        submitViewModel.recaptcha_response_field
+                    context.Request.Form["g-recaptcha-response"]
                     );
 
-                    if (!HandleValidateResponse(context, result)) {
-	                _notifier.Error(T("The text you entered in the Captcha field does not match the image"));
-                    	updater.AddModelError("", T("The text you entered in the Captcha field does not match the image"));
+                ReCaptchaPartResponseModel responseModel = Newtonsoft.Json.JsonConvert.DeserializeObject<ReCaptchaPartResponseModel>(result);
+
+                if (!responseModel.success) {
+                    for (int i = 0; i < responseModel.errorMessage.Length; i++) {
+                        if (responseModel.errorMessage[i] == "missing-input-response") {
+                            _notifier.Error(T("The Captcha field is required"));
+                        }
+                        else {
+                            _notifier.Error(T("There was an error with the Captcha please try again"));
+                            Logger.Error("Error occured while submitting a reCaptcha: " + responseModel.errorMessage[i]);
                         }
                     }
-                catch(Exception e) {
+                }
+            }
+            catch (Exception e) {
                 Logger.Error(e, "An unexcepted error occured while submitting a reCaptcha");
                 updater.AddModelError("Parts_ReCaptcha_Fields", T("There was an error while validating the Captcha image"));
             }
-            }
 
             return Editor(part, shapeHelper);
         }
 
-        private static string ExecuteValidateRequest(string privateKey, string remoteip, string challenge, string response) {
-            WebRequest request = WebRequest.Create(ReCaptchaUrl + "/verify");
-            request.Method = "POST";
+        private static string ExecuteValidateRequest(string privateKey, string remoteip, string response) {
+            var postData = String.Format(CultureInfo.InvariantCulture,
+                "secret={0}&response={1}&remoteip={2}",
+                privateKey,
+                response,
+                remoteip
+            );
+
+            WebRequest request = WebRequest.Create(ReCaptchaSecureUrl + "?" + postData);
+            request.Method = "GET";
             request.Timeout = 5000; //milliseconds
             request.ContentType = "application/x-www-form-urlencoded";
 
-            var postData = String.Format(CultureInfo.InvariantCulture,
-                "privatekey={0}&remoteip={1}&challenge={2}&response={3}",
-                privateKey,
-                remoteip,
-                challenge,
-                response
-            );
-
-            byte[] content = Encoding.UTF8.GetBytes(postData);
-            using (Stream stream = request.GetRequestStream()) {
-                stream.Write(content, 0, content.Length);
-            }
             using (WebResponse webResponse = request.GetResponse()) {
                 using (var reader = new StreamReader(webResponse.GetResponseStream())) {
                     return reader.ReadToEnd();
                 }
             }
         }
-
-        internal static bool HandleValidateResponse(HttpContextBase context, string response) {
-            if (!String.IsNullOrEmpty(response)) {
-                string[] results = response.Split('\n');
-                if (results.Length > 0) {
-                    bool rval = Convert.ToBoolean(results[0], CultureInfo.InvariantCulture);
-                    return rval;
-                }
-            }
-            return false;
-        }
     }
 }

src/Orchard.Web/Modules/Orchard.AntiSpam/Services/MissingSettingsBanner.cs

@@ -0,0 +1,31 @@
+using System.Collections.Generic;
+using Orchard.AntiSpam.Models;
+using Orchard.ContentManagement;
+using Orchard.Localization;
+using Orchard.UI.Admin.Notification;
+using Orchard.UI.Notify;
+using System.Web.Mvc;
+
+namespace Orchard.AntiSpam.Services {
+    public class MissingSettingsBanner : INotificationProvider {
+        private readonly IOrchardServices _orchardServices;
+
+        public MissingSettingsBanner(IOrchardServices orchardServices) {
+            _orchardServices = orchardServices;
+            T = NullLocalizer.Instance;
+        }
+
+        public Localizer T { get; set; }
+
+        public IEnumerable<NotifyEntry> GetNotifications() {
+            var workContext = _orchardServices.WorkContext;
+            var RecaptchaSettings = workContext.CurrentSite.As<ReCaptchaSettingsPart>();
+
+            if (RecaptchaSettings.PublicKey == null || RecaptchaSettings.PrivateKey == null) {
+                var urlHelper = new UrlHelper(workContext.HttpContext.Request.RequestContext);
+                var url = urlHelper.Action("Spam", "Admin", new { Area = "Settings" });
+                yield return new NotifyEntry { Message = T("The <a href=\"{0}\">ReCaptcha settings</a> need to be configured.", url), Type = NotifyType.Warning };
+            }
+        }
+    }
+}

src/Orchard.Web/Modules/Orchard.AntiSpam/ViewModels/ReCaptchaPartEditViewModel.cs

@@ -1,10 +1,14 @@
-namespace Orchard.AntiSpam.ViewModels {
+using Newtonsoft.Json;
+
+namespace Orchard.AntiSpam.ViewModels {
     public class ReCaptchaPartEditViewModel {
         public string PublicKey { get; set; }
     }
 
-    public class ReCaptchaPartSubmitViewModel {
-        public string recaptcha_challenge_field { get; set; }
-        public string recaptcha_response_field { get; set; }
+    public class ReCaptchaPartResponseModel {
+        public bool success { get; set; }
+
+        [JsonProperty("error-codes")]
+        public string[] errorMessage { get; set; }
     }
 }

src/Orchard.Web/Modules/Orchard.AntiSpam/Views/EditorTemplates/Parts.ReCaptcha.Fields.cshtml

@@ -1,8 +1,32 @@
 @model Orchard.AntiSpam.ViewModels.ReCaptchaPartEditViewModel
-  <script type="text/javascript" src="//www.google.com/recaptcha/api/challenge?k=@Model.PublicKey"></script>
+
+@{
+    var publicKey = (string)Model.PublicKey;
+}
+@if (!String.IsNullOrWhiteSpace(publicKey)) {
+    <script src='https://www.google.com/recaptcha/api.js'></script>
+
+    <fieldset>
+        <div class="g-recaptcha" data-sitekey="@publicKey"></div>
         <noscript>
-     <iframe src="//www.google.com/recaptcha/api/noscript?k=@Model.PublicKey" height="300" width="500" frameborder="0"></iframe><br>
-     <textarea name="recaptcha_challenge_field" rows="3" cols="40">
+            <div style="width: 302px; height: 352px;">
+                <div style="width: 302px; height: 352px; position: relative;">
+                    <div style="width: 302px; height: 352px; position: absolute;">
+                        <iframe src="https://www.google.com/recaptcha/api/fallback?k=@publicKey"
+                                frameborder="0" scrolling="no"
+                                style="width: 302px; height:352px; border-style: none;">
+                        </iframe>
+                    </div>
+                    <div style="width: 250px; height: 80px; position: absolute; border-style: none;
+                                bottom: 21px; left: 25px; margin: 0px; padding: 0px; right: 25px;">
+                        <textarea id="g-recaptcha-response" name="g-recaptcha-response"
+                                  class="g-recaptcha-response"
+                                  style="width: 250px; height: 80px; min-height: 80px; border: 1px solid #c1c1c1;
+                                         margin: 0px; padding: 0px; resize: none;" value="">
                         </textarea>
-     <input type="hidden" name="recaptcha_response_field" value="manual_challenge">
+                    </div>
+                </div>
+            </div>
         </noscript>
+    </fieldset>
+}

src/Orchard.Web/Modules/Orchard.DynamicForms/Validators/ReCaptchaValidator.cs

@@ -7,6 +7,7 @@ using System.Web;
 using Orchard.AntiSpam.Models;
 using Orchard.ContentManagement;
 using Orchard.DynamicForms.Elements;
+using Orchard.DynamicForms.ViewModels;
 using Orchard.DynamicForms.Helpers;
 using Orchard.DynamicForms.Services;
 using Orchard.DynamicForms.Services.Models;
@@ -19,7 +20,7 @@ namespace Orchard.DynamicForms.Validators {
             _workContextAccessor = workContextAccessor;
         }
 
-        private const string ReCaptchaUrl = "http://www.google.com/recaptcha/api";
+        private const string ReCaptchaSecureUrl = "https://www.google.com/recaptcha/api/siteverify";
 
         protected override void OnValidate(ReCaptcha element, ValidateInputContext context) {
             var workContext = _workContextAccessor.GetContext();
@@ -30,22 +31,32 @@ namespace Orchard.DynamicForms.Validators {
             }
 
             var httpContext = workContext.HttpContext;
-            var response = context.Values["recaptcha_response_field"];
-            var challenge = context.Values["recaptcha_challenge_field"];
+            var response = context.Values["g-recaptcha-response"];
 
             if (context.ModelState.IsValid) {
                 try {
                     var result = ExecuteValidateRequest(
                         settings.PrivateKey,
                         httpContext.Request.ServerVariables["REMOTE_ADDR"],
-                        challenge,
                         response
                         );
 
-                    if (!HandleValidateResponse(httpContext, result)) {
+                    ReCaptchaElementResponseModel responseModel = Newtonsoft.Json.JsonConvert.DeserializeObject<ReCaptchaElementResponseModel>(result);
+
+                    if (!responseModel.success) {
+                        for (int i = 0; i < responseModel.errorMessage.Length; i++) {
+                            if (responseModel.errorMessage[i] == "missing-input-response") {
                                 var validationSettings = element.ValidationSettings;
-                        var validationMessage = validationSettings.CustomValidationMessage.WithDefault("The text you entered in the Captcha field does not match the image. Please try again.");
-                        context.ModelState.AddModelError("recaptcha_response_field", T(validationMessage).Text);
+                                var validationMessage = validationSettings.CustomValidationMessage.WithDefault("The Captcha field is required");
+                                context.ModelState.AddModelError("g-recaptcha-response", T(validationMessage).Text);
+                            }
+                            else {
+                                var validationSettings = element.ValidationSettings;
+                                var validationMessage = validationSettings.CustomValidationMessage.WithDefault("There was an error with the Captcha please try again");
+                                context.ModelState.AddModelError("g-recaptcha-response", T(validationMessage).Text);
+                                Logger.Error("Error occured while submitting a reCaptcha: " + responseModel.errorMessage[i]);
+                            }
+                        }
                     }
                 }
                 catch (Exception e) {
@@ -55,40 +66,24 @@ namespace Orchard.DynamicForms.Validators {
             }
         }
 
-        private static string ExecuteValidateRequest(string privateKey, string remoteip, string challenge, string response) {
-            var request = WebRequest.Create(ReCaptchaUrl + "/verify");
-            request.Method = "POST";
+        private static string ExecuteValidateRequest(string privateKey, string remoteip, string response) {
+            var postData = String.Format(CultureInfo.InvariantCulture,
+                "secret={0}&response={1}&remoteip={2}",
+                privateKey,
+                response,
+                remoteip
+            );
+
+            WebRequest request = WebRequest.Create(ReCaptchaSecureUrl + "?" + postData);
+            request.Method = "GET";
             request.Timeout = 5000; //milliseconds
             request.ContentType = "application/x-www-form-urlencoded";
 
-            var postData = String.Format(CultureInfo.InvariantCulture,
-                "privatekey={0}&remoteip={1}&challenge={2}&response={3}",
-                privateKey,
-                remoteip,
-                challenge,
-                response
-            );
-
-            var content = Encoding.UTF8.GetBytes(postData);
-            using (var stream = request.GetRequestStream()) {
-                stream.Write(content, 0, content.Length);
-            }
-            using (var webResponse = request.GetResponse()) {
+            using (WebResponse webResponse = request.GetResponse()) {
                 using (var reader = new StreamReader(webResponse.GetResponseStream())) {
                     return reader.ReadToEnd();
                 }
             }
         }
-
-        internal static bool HandleValidateResponse(HttpContextBase context, string response) {
-            if (!String.IsNullOrEmpty(response)) {
-                var results = response.Split('\n');
-                if (results.Length > 0) {
-                    var rval = Convert.ToBoolean(results[0], CultureInfo.InvariantCulture);
-                    return rval;
-                }
-            }
-            return false;
-        }
     }
 }

src/Orchard.Web/Modules/Orchard.DynamicForms/ViewModels/ReCaptchaElementViewModel.cs

@@ -0,0 +1,11 @@
+using Newtonsoft.Json;
+
+namespace Orchard.DynamicForms.ViewModels
+{
+    public class ReCaptchaElementResponseModel {
+        public bool success { get; set; }
+
+        [JsonProperty("error-codes")]
+        public string[] errorMessage { get; set; }
+    }
+}

src/Orchard.Web/Modules/Orchard.DynamicForms/Views/Elements/ReCaptcha.cshtml

@@ -7,14 +7,33 @@
 }
 @if (!String.IsNullOrWhiteSpace(publicKey)) {
     @tagBuilder.StartElement
-    <script type="text/javascript" src="//www.google.com/recaptcha/api/challenge?k=@publicKey"></script>
+    <script src='https://www.google.com/recaptcha/api.js'></script>
+
+    <fieldset>
+        <div class="g-recaptcha" data-sitekey="@publicKey"></div>
         <noscript>
-        <iframe src="//www.google.com/recaptcha/api/noscript?k=@publicKey" height="280" width="500" frameborder="0"></iframe><br>
-        <textarea name="recaptcha_challenge_field" rows="3" cols="40"></textarea>
-        <input type="hidden" name="recaptcha_response_field" value="manual_challenge">
+            <div style="width: 302px; height: 352px;">
+                <div style="width: 302px; height: 352px; position: relative;">
+                    <div style="width: 302px; height: 352px; position: absolute;">
+                        <iframe src="https://www.google.com/recaptcha/api/fallback?k=@publicKey"
+                                frameborder="0" scrolling="no"
+                                style="width: 302px; height:352px; border-style: none;">
+                        </iframe>
+                    </div>
+                    <div style="width: 250px; height: 80px; position: absolute; border-style: none;
+                                bottom: 21px; left: 25px; margin: 0px; padding: 0px; right: 25px;">
+                        <textarea id="g-recaptcha-response" name="g-recaptcha-response"
+                                  class="g-recaptcha-response"
+                                  style="width: 250px; height: 80px; min-height: 80px; border: 1px solid #c1c1c1;
+                                         margin: 0px; padding: 0px; resize: none;" value="">
+                        </textarea>
+                    </div>
+                </div>
+            </div>
         </noscript>
+    </fieldset>
     @tagBuilder.EndElement
     if (element.ValidationSettings.ShowValidationMessage == true) {
-        @Html.ValidationMessage("recaptcha_response_field")
+        @Html.ValidationMessage("g-recaptcha-response")
     }
 }