X-Git-Url: https://vcs.fsf.org/?a=blobdiff_plain;f=CRM%2FUtils%2FRule.php;h=862e4603f74740b6c3137c55609e2e3d226d00fd;hb=57b12a50cc40378e81f204e79041aa5ec22be469;hp=9341e173f9225563edb2fac410c70bfa2dcf5e2c;hpb=6960dd4c1e5e99f8e0b3564dcc15269184d7702d;p=civicrm-core.git

diff --git a/CRM/Utils/Rule.php b/CRM/Utils/Rule.php
index 9341e173f9..862e4603f7 100644
--- a/CRM/Utils/Rule.php
+++ b/CRM/Utils/Rule.php
@@ -625,6 +625,10 @@ class CRM_Utils_Rule {
    * @return bool
    */
   public static function boolean($value) {
+    if ($value === TRUE || $value === FALSE) {
+      return TRUE;
+    }
+    // This is intentionally not using === comparison - but will fail on FALSE.
     return preg_match(
       '/(^(1|0)$)|(^(Y(es)?|N(o)?)$)|(^(T(rue)?|F(alse)?)$)/i', $value
     ) ? TRUE : FALSE;
@@ -635,12 +639,46 @@ class CRM_Utils_Rule {
    *
    * @return bool
    */
-  public static function email($value) {
+  public static function email($value): bool {
+    if (function_exists('idn_to_ascii')) {
+      $parts = explode('@', $value);
+      foreach ($parts as &$part) {
+        // if the function returns FALSE then let filter_var have at it.
+        $part = self::idnToAsci($part) ?: $part;
+        if ($part === 'localhost') {
+          // if we are in a dev environment add .com to trick it into accepting localhost.
+          // this is a bit best-effort - ie we don't really care that it's in a bigger if.
+          $part .= '.com';
+        }
+      }
+      $value = implode('@', $parts);
+    }
     return (bool) filter_var($value, FILTER_VALIDATE_EMAIL);
   }
 
   /**
-   * @param $list
+   * Convert domain string to ascii.
+   *
+   * See https://lab.civicrm.org/dev/core/-/issues/2769
+   * and also discussion over in guzzle land
+   * https://github.com/guzzle/guzzle/pull/2454
+   *
+   * @param string $string
+   *
+   * @return string|false
+   */
+  private static function idnToAsci(string $string) {
+    if (!\extension_loaded('intl')) {
+      return $string;
+    }
+    if (defined('INTL_IDNA_VARIANT_UTS46')) {
+      return idn_to_ascii($string, 0, INTL_IDNA_VARIANT_UTS46);
+    }
+    return idn_to_ascii($string);
+  }
+
+  /**
+   * @param string $list
    *
    * @return bool
    */