Use separate email-friendly token for incoming email and let incoming

email token be reset

3 files changed, 23 insertions, 10 deletions

diff --git a/app/models/concerns/token_authenticatable.rb b/app/models/concerns/token_authenticatable.rb
index 24c7b26d223..04d30f46210 100644
--- a/app/models/concerns/token_authenticatable.rb
+++ b/app/models/concerns/token_authenticatable.rb
@@ -4,17 +4,21 @@ module TokenAuthenticatable
   private
 
   def write_new_token(token_field)
-    new_token = generate_token(token_field)
+    new_token = generate_available_token(token_field)
     write_attribute(token_field, new_token)
   end
 
-  def generate_token(token_field)
+  def generate_available_token(token_field)
     loop do
-      token = Devise.friendly_token
+      token = generate_token(token_field)
       break token unless self.class.unscoped.find_by(token_field => token)
     end
   end
 
+  def generate_token(token_field)
+    Devise.friendly_token
+  end
+
   class_methods do
     def authentication_token_fields
       @token_fields || []
diff --git a/app/models/project.rb b/app/models/project.rb
index 686d285410b..56b84b0aebb 100644
--- a/app/models/project.rb
+++ b/app/models/project.rb
@@ -624,13 +624,12 @@ class Project < ActiveRecord::Base
   end
 
   def new_issue_address(author)
-    # This feature is disabled for the time being.
-    return nil
+    return unless Gitlab::IncomingEmail.enabled? && author
 
-    if Gitlab::IncomingEmail.enabled? && author # rubocop:disable Lint/UnreachableCode
-      Gitlab::IncomingEmail.reply_address(
-        "#{path_with_namespace}+#{author.authentication_token}")
-    end
+    author.ensure_incoming_email_token!
+
+    Gitlab::IncomingEmail.reply_address(
+      "#{path_with_namespace}+#{author.incoming_email_token}")
   end
 
   def build_commit_note(commit)
diff --git a/app/models/user.rb b/app/models/user.rb
index 65e96ee6b2e..9a3619b0bc3 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -13,6 +13,7 @@ class User < ActiveRecord::Base
   DEFAULT_NOTIFICATION_LEVEL = :participating
 
   add_authentication_token_field :authentication_token
+  add_authentication_token_field :incoming_email_token
 
   default_value_for :admin, false
   default_value_for(:external) { current_application_settings.user_default_external }
@@ -119,7 +120,7 @@ class User < ActiveRecord::Base
   before_validation :set_public_email, if: ->(user) { user.public_email_changed? }
 
   after_update :update_emails_with_primary_email, if: ->(user) { user.email_changed? }
-  before_save :ensure_authentication_token
+  before_save :ensure_authentication_token, :ensure_incoming_email_token
   before_save :ensure_external_user_rights
   after_save :ensure_namespace_correct
   after_initialize :set_projects_limit
@@ -946,4 +947,13 @@ class User < ActiveRecord::Base
       signup_domain =~ regexp
     end
   end
+
+  def generate_token(token_field)
+    if token_field == :incoming_email_token
+      # Needs to be all lowercase and alphanumeric because it's gonna be used in an email address.
+      SecureRandom.hex
+    else
+      super
+    end
+  end
 end