Add bin/email-check.php script

Author: carlbennett

bin/email-check.php

@@ -0,0 +1,37 @@
+#!/usr/bin/env php
+<?php /* vim: set colorcolumn=: */
+/**
+ * @project bnetdocs-web <https://github.com/BNETDocs/bnetdocs-web/>
+ *
+ * This script will validate an email address against the current
+ * configuration and return whether it is allowed or not.
+ * Not exhaustive.
+ */
+$path = __DIR__ . '/../etc/config.phoenix.json';
+$json = file_get_contents($path);
+$json = json_decode($json);
+$email_denylist = $json->email->recipient_denylist_regexp;
+
+if (!isset($argv[1]))
+{
+  printf("\e[33mUsage: \e[1;33m%s\e[0;0m" . PHP_EOL, $argv[0] . ' <email-address>');
+  exit(1);
+}
+$email = $argv[1];
+
+if (!filter_var($email, FILTER_VALIDATE_EMAIL))
+{
+  printf("\e[31mInvalid: [\e[1;31m%s\e[0;31m]\e[0m" . PHP_EOL, $email);
+  exit(1);
+}
+
+foreach ($email_denylist as $_bad_email) {
+  printf("\e[33mRegexp: [\e[0m%s\e[33m]\e[0m" . PHP_EOL, $_bad_email);
+  if (preg_match($_bad_email, $email)) {
+    printf("\e[31mDenied: [\e[1;31m%s\e[0;31m]\e[0m" . PHP_EOL, $email);
+    exit(1);
+  }
+}
+
+printf("\e[32mAllowed: [\e[1;32m%s\e[0;32m]\e[0m" . PHP_EOL, $email);
+exit(0);