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<?php namespace Stevenmaguire\Http\Middleware; |
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trait CspValidationTrait |
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{ |
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/** |
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* Validates a given profiles configuration. |
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* |
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* @param array $profiles |
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* |
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* @return boolean |
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* @throws CspValidationException |
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*/ |
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public static function validateProfiles(array $profiles) |
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{ |
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$messages = []; |
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if (isset($profiles['default'])) { |
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static::validateProfilesDefault($profiles['default'], $messages); |
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} |
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if (isset($profiles['profiles'])) { |
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static::validateProfilesConfiguration($profiles['profiles'], $messages); |
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} |
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if (empty($messages)) { |
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return true; |
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} |
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throw new Exceptions\CspValidationException($messages); |
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} |
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/** |
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* Validates a given default configuration. |
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* |
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* @param mixed $default |
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* @param array $messages |
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* |
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* @return void |
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*/ |
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public static function validateProfilesDefault($default, array &$messages) |
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{ |
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if (static::isNotArrayOrString($default)) { |
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$messages[] = 'Default profile configuration must be a string or array.'; |
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} |
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if (is_array($default) && count(array_filter($default, [__CLASS__, 'isNotString']))) { |
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$messages[] = 'Default profile configuration must contain only strings when defined as array.'; |
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} |
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} |
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/** |
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* Validates a given profiles configuration. |
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* |
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* @param mixed $profiles |
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* @param array $messages |
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* |
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* @return void |
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*/ |
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public static function validateProfilesConfiguration($profiles, array &$messages) |
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{ |
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if (static::isNotArray($profiles)) { |
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$messages[] = 'Profile configuration must be an array.'; |
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} else { |
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array_walk($profiles, function ($config, $profile) use (&$messages) { |
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if (static::isNotArray($config)) { |
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$messages[] = 'Profile configuration for "'.$profile.'" must be an array.'; |
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} else { |
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array_walk($config, function ($domains, $directive) use ($profile, &$messages) { |
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if (static::isNotArrayOrString($domains)) { |
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$messages[] = 'Directive configuration for "'.$profile.':'.$directive.'"'. |
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' must be a string or an array.'; |
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} |
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}); |
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} |
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}); |
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} |
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} |
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/** |
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* Determines if given subject is not an array. |
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* |
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* @param mixed |
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* |
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* @return boolean |
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*/ |
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protected static function isNotArray($subject) |
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{ |
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return !is_array($subject); |
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} |
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/** |
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* Determines if given subject is not an array and not a string. |
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* |
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* @param mixed |
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* |
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* @return boolean |
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*/ |
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protected static function isNotArrayOrString($subject) |
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{ |
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return static::isNotString($subject) && static::isNotArray($subject); |
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} |
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/** |
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* Determines if given subject is not a string. |
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* |
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* @param mixed |
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* |
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* @return boolean |
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*/ |
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protected static function isNotString($subject) |
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{ |
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return !is_string($subject); |
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} |
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} |
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stevenmaguire /
middleware-csp-php
