/**
* isValidSpecialForm: Tells us if the ffname supplied is a valid
* special form for the current gateway.
* @var string $ffname The form name we want to try
* @return boolean True if this is a valid special form, otherwise false
*/
public function isValidSpecialForm($ffname)
{
$defn = GatewayFormChooser::getFormDefinition($ffname);
if (is_array($defn) && DataValidator::value_appears_in($this->getIdentifier(), $defn['gateway']) && array_key_exists('special_type', $defn)) {
return true;
}
return false;
}
/**
* Test to determine if a value appears in a haystack. The haystack may have
* explicit +/- rules (a - will take precedence over a +; if there is no
* + rule, but there is a - rule everything is implicitly accepted); and may
* also have an 'ALL' condition.
*
* @param mixed $needle Value, or array of values, to match
* @param mixed $haystack Value, or array of values, that are acceptable
* @return bool
*/
public static function value_appears_in($needle, $haystack)
{
$needle = is_array($needle) ? $needle : array($needle);
$haystack = is_array($haystack) ? $haystack : array($haystack);
$plusCheck = array_key_exists('+', $haystack);
$minusCheck = array_key_exists('-', $haystack);
if ($plusCheck || $minusCheck) {
// With +/- checks we will first explicitly deny anything in '-'
// Then if '+' is defined accept anything there
// but if '+' is not defined we just let everything that wasn't denied by '-' through
// Otherwise we assume both were defined and deny everything :)
if ($minusCheck && DataValidator::value_appears_in($needle, $haystack['-'])) {
return false;
}
if ($plusCheck && DataValidator::value_appears_in($needle, $haystack['+'])) {
return true;
} elseif (!$plusCheck) {
// Implicit acceptance
return true;
}
return false;
}
if (count($haystack) === 1 && in_array('ALL', $haystack)) {
// If the haystack can accept anything, then whoo!
return true;
}
$haystack = array_filter($haystack, function ($value) {
return !is_array($value);
});
$result = array_intersect($haystack, $needle);
if (!empty($result)) {
return true;
} else {
return false;
}
}
protected static function prefAllowedBySpec($prefs, $prefKey, $form, $formKey)
{
// we only filter on keys that exist
if (empty($prefs[$prefKey]) || empty($form[$formKey])) {
return true;
}
$prefValue = $prefs[$prefKey];
$formSetting = $form[$formKey];
return DataValidator::value_appears_in($prefValue, $formSetting);
}
