Signups now must to click button to confirm email, fixes #1468 (#1469)

BrainPortal/app/controllers/signups_controller.rb

@@ -130,11 +130,21 @@ def destroy #:nodoc:
 
   # Confirms that a signup person's email address actually belongs to them
   def confirm #:nodoc:
-    @signup = Signup.find(params[:id]) rescue nil
+    @signup  = Signup.find(params[:id]) rescue nil
     token    = params[:token] || ""
+    is_valid = @signup.present? && token.present? && @signup.confirm_token == token
+    token    = "" if ! is_valid # that will just skip over everything and redirect at the end
+    req_method = request.method.to_s.upcase # GET or POST
+
+    # Params properly confirms the GET request? Show a simple page with button
+    if is_valid && req_method == 'GET'
+      @token = token # for the button
+      render 'confirm_button.html.erb'
+      return
+    end
 
-    # Params properly confirms the request? Then record that and show a nice message to user.
-    if @signup.present? && token.present? && @signup.confirm_token == token
+    # Params properly confirms the POST request? Then record that and show a nice message to user.
+    if is_valid && req_method == 'POST'
       @signup.confirmed = true
       @signup.save
       @propose_view = can_edit?(@signup)

BrainPortal/app/views/signups/confirm_button.html.erb

@@ -0,0 +1,39 @@
+
+<%-
+#
+# CBRAIN Project
+#
+# Copyright (C) 2008-2025
+# The Royal Institution for the Advancement of Learning
+# McGill University
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+-%>
+
+<% title 'Confirm Your Request' %>
+
+<h1>Please confirm your new account request.</h1>
+
+Thank you for following the link from CBRAIN in your mailbox.
+<p>
+To ensure you are indeed the owner of the email address that has
+requested the creation of an account on CBRAIN, please complete the
+final required step by clicking the button below. This will tell
+the CBRAIN administrators that your request is legitimate and
+official.
+<p>
+
+<%= link_to( 'Confirm request', confirm_signup_path(@signup, :token => @token), :class => "button", :method => :post ) %>
+

BrainPortal/config/routes.rb

@@ -188,6 +188,7 @@
     member do
       post 'resend_confirm'
       get  'confirm'
+      post 'confirm'
     end
     collection do
       post 'multi_action'