From b3ceb3dcc4df62803aa967d7aecee686973a8996 Mon Sep 17 00:00:00 2001
From: Eugen Rochko <eugen@zeonfederated.com>
Date: Sat, 17 Apr 2021 03:14:25 +0200
Subject: Add canonical e-mail blocks for suspended accounts (#16049)

Prevent new accounts from being created using the same underlying
e-mail as a suspended account using extensions and period
permutations. Stores e-mails as a SHA256 hash
---
 app/models/canonical_email_block.rb | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 app/models/canonical_email_block.rb

(limited to 'app/models/canonical_email_block.rb')

diff --git a/app/models/canonical_email_block.rb b/app/models/canonical_email_block.rb
new file mode 100644
index 000000000..a8546d65a
--- /dev/null
+++ b/app/models/canonical_email_block.rb
@@ -0,0 +1,27 @@
+# frozen_string_literal: true
+# == Schema Information
+#
+# Table name: canonical_email_blocks
+#
+#  id                   :bigint(8)        not null, primary key
+#  canonical_email_hash :string           default(""), not null
+#  reference_account_id :bigint(8)        not null
+#  created_at           :datetime         not null
+#  updated_at           :datetime         not null
+#
+
+class CanonicalEmailBlock < ApplicationRecord
+  include EmailHelper
+
+  belongs_to :reference_account, class_name: 'Account'
+
+  validates :canonical_email_hash, presence: true
+
+  def email=(email)
+    self.canonical_email_hash = email_to_canonical_email_hash(email)
+  end
+
+  def self.block?(email)
+    where(canonical_email_hash: email_to_canonical_email_hash(email)).exists?
+  end
+end
-- 
cgit