constraint_alphanumeric.inc in Password Policy 6

Password policy constraint callbacks.

File

constraints/constraint_alphanumeric.inc

<?php

/**
 * @file
 * Password policy constraint callbacks.
 */

/****************************************************************************/

/* Constraint API                                                           */

/****************************************************************************/

/**
 * Description of the constraint.
 */
function password_policy_constraint_alphanumeric_description() {
  return array(
    'name' => t('Alphanumeric'),
    'description' => t('Password must contain the specified minimum number of alphanumeric (letters or numbers) characters.'),
  );
}

/**
 * Error message of the constraint.
 */
function password_policy_constraint_alphanumeric_error($constraint) {
  return format_plural($constraint, 'Password must contain at least one alphanumeric (letter or number) character.', 'Password must contain at least @count alphanumeric (letter or number) characters.');
}

/**
 * Password validation.
 */
function password_policy_constraint_alphanumeric_validate($password, $constraint, $uid) {
  $length = drupal_strlen($password);
  $num = 0;
  for ($i = 0; $i < $length; $i++) {
    if (ctype_alnum($password[$i])) {
      $num++;
    }
  }
  return $num >= $constraint;
}

/**
 * Javascript portion.
 */
function password_policy_constraint_alphanumeric_js($constraint, $uid) {
  $s = '';
  $s .= "  var i=0;\n";
  $s .= "  var num=0;\n";
  $s .= "  var chr=\"\";\n";
  $s .= "  while(i<value.length) {\n";
  $s .= "    chr=value.charAt(i);\n";
  $s .= "    if(chr.toUpperCase() != chr.toLowerCase() || \"1234567890\".indexOf(chr) != -1) {\n";
  $s .= "      num++;\n";
  $s .= "    }\n";
  $s .= "    i++;\n";
  $s .= "  }\n";
  $s .= "  if (num<{$constraint}) {\n";
  $s .= "    strength=\"low\";\n";
  $s .= "    msg.push(translate.constraint_alphanumeric);\n";
  $s .= "  }\n";
  return $s;
}

Functions

Name	Description
password_policy_constraint_alphanumeric_description	Description of the constraint.
password_policy_constraint_alphanumeric_error	Error message of the constraint.
password_policy_constraint_alphanumeric_js	Javascript portion.
password_policy_constraint_alphanumeric_validate	Password validation.