From f9c6ce66f283d7b6eb5a933fb6ce226cd363feca Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ja=CC=81n=20Mikla=CC=81s=CC=8C?= <neosinner@gmail.com>
Date: Thu, 31 Oct 2019 10:25:13 +0100
Subject: [PATCH] Allow blacklisting domains

[MAILPOET-2509]
---
 lib/Subscription/Blacklist.php | 20 +++++++++++++++++---
 1 file changed, 17 insertions(+), 3 deletions(-)

diff --git a/lib/Subscription/Blacklist.php b/lib/Subscription/Blacklist.php
index 009d58c018..22e39da094 100644
--- a/lib/Subscription/Blacklist.php
+++ b/lib/Subscription/Blacklist.php
@@ -11,6 +11,14 @@ class Blacklist {
     '7151c278028263ace958b66616e69a438f23e5058a5df42ed734e9e6704f8332' => 1,
   ];
 
+  private $blacklistedDomains = [
+    '2ea570cf0c440b2ec7d6e1335108625a5f62162b2116a25c9c909dc5b54c213f' => 1,
+    '1e10eb32b615217baa4d8f54191891e107851a2057d1128f067f1df096896e45' => 1,
+    'dc2bfb04e38d3c25c8a465a5fed841a1cb1685044d12241efe01f0fc044f2182' => 1,
+    'f17c13fe5a1d8cd2e78a04528377cc607881ad12b6295b6fa8b6a789d1d04c10' => 1,
+    '813cbef72da3542e783470ecd62589bceb3883d15ab2435ec2486f9762602b8c' => 1,
+  ];
+
   public function __construct(array $blacklistedEmails = null) {
     if ($blacklistedEmails) {
       $this->blacklistedEmails = array_fill_keys(array_map([$this, 'hash'], $blacklistedEmails), 1);
@@ -19,10 +27,16 @@ class Blacklist {
 
   public function isBlacklisted($email) {
     $hashed_email = $this->hash($email);
-    return isset($this->blacklistedEmails[$hashed_email]);
+    if (isset($this->blacklistedEmails[$hashed_email])) {
+      return true;
+    }
+    $email_parts = explode('@', $email);
+    $domain = end($email_parts);
+    $hashed_domain = $this->hash($domain);
+    return isset($this->blacklistedDomains[$hashed_domain]);
   }
 
-  private function hash($email) {
-    return hash('sha256', $email . self::SALT);
+  private function hash($key) {
+    return hash('sha256', $key . self::SALT);
   }
 }