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<?php |
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namespace HtaccessCapabilityTester\Testers\Helpers; |
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use \HtaccessCapabilityTester\HttpResponse; |
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use \HtaccessCapabilityTester\TestResult; |
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use \HtaccessCapabilityTester\Testers\AbstractTester; |
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/** |
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* Class for interpreting responses using a defined interpretation table. |
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* |
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* @package HtaccessCapabilityTester |
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* @author Bjørn Rosell <[email protected]> |
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* @since Class available since 0.7 |
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*/ |
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class ResponseInterpreter |
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{ |
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/** |
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* Parse status string (failure | success | inconclusive) to bool|null. |
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* |
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* @param string $statusString (failure | success | inconclusive) |
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* @return bool|null |
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*/ |
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private static function parseStatusString($statusString) |
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{ |
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$status = null; |
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switch ($statusString) { |
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case 'failure': |
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$status = false; |
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break; |
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case 'inconclusive': |
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$status = null; |
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break; |
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case 'success': |
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$status = true; |
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break; |
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} |
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return $status; |
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} |
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/** |
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* Evaluate condition (string examination) |
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* |
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* @param string $val |
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* @param string $operator (is-empty | equals | not-equals | begins-with) |
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* @param string $arg1 (only required for some operators) |
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* @return bool |
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*/ |
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private static function evaluateConditionForString($operator, $val, $arg1) |
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{ |
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switch ($operator) { |
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case 'is-empty': |
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return ($val == ''); |
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case 'equals': |
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return ($val == $arg1); |
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case 'not-equals': |
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return ($val != $arg1); |
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case 'begins-with': |
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return (strpos($val, $arg1) === 0); |
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} |
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return false; |
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} |
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/** |
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* Evaluate condition (hash examination) |
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* |
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* @param array $val |
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* @param string $operator (is-empty | equals | not-equals | begins-with) |
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* @param string $arg1 (only required for some operators) |
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* @return bool |
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*/ |
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private static function evaluateConditionForHash($operator, $val, $arg1, $arg2) |
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{ |
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switch ($operator) { |
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case 'contains-key': |
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return (isset($val[$arg1])); |
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case 'not-contains-key': |
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return (!isset($val[$arg1])); |
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case 'contains-key-value': |
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return (isset($val[$arg1]) && ($val[$arg1] == $arg2)); |
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case 'not-contains-key-value': |
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return (!isset($val[$arg1]) || ($val[$arg1] != $arg2)); |
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} |
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return false; |
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} |
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/** |
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* Evaluate condition |
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* |
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* @param array $val |
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* @param string $valType (string | hash) |
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* @param string $arg1 (only required for some operators) |
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* @param string $arg2 (only required for some operators) |
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* @return bool |
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*/ |
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private static function evaluateCondition($operator, $valType, $val, $arg1, $arg2) |
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{ |
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if ($valType == 'string') { |
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return self::evaluateConditionForString($operator, $val, $arg1); |
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} elseif ($valType == 'hash') { |
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return self::evaluateConditionForHash($operator, $val, $arg1, $arg2); |
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} |
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return false; |
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} |
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/** |
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* Get property |
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* |
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* @param HttpResponse $response |
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* @param string $property (status-code | body | headers) |
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* |
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* @return array|null [variable type, value] or null if invalid property |
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*/ |
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private static function getPropertyOnResponse($response, $property) |
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{ |
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switch ($property) { |
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case 'status-code': |
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return ['string', $response->statusCode]; |
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case 'body': |
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return ['string', $response->body]; |
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case 'headers': |
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return ['hash', $response->getHeadersHash()]; |
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} |
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return null; |
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} |
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/** |
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* Interpret line. |
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* |
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* @param HttpResponse $response |
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* @param array $line |
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* |
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* @return TestResult|null If the condition matches, a TestResult is returned, otherwise null |
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*/ |
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private static function interpretLine($response, $line) |
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{ |
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// ie: |
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// ['inconclusive', 'body', 'is-empty'], |
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// ['failure', 'statusCode', 'equals', '500'] |
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// ['success', 'headers', 'contains-key-value', 'X-Response-Header-Test', 'test'], |
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$status = self::parseStatusString($line[0]); |
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if (!isset($line[1])) { |
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return new TestResult($status, ''); |
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} |
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$propertyToExamine = $line[1]; |
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$operator = $line[2]; |
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$arg1 = (isset($line[3]) ? $line[3] : ''); |
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$arg2 = (isset($line[4]) ? $line[4] : ''); |
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$valType = ''; |
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list($valType, $val) = self::getPropertyOnResponse($response, $propertyToExamine); |
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$reason = $propertyToExamine . ' ' . $operator; |
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if (isset($line[3])) { |
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$reason .= ' "' . implode('" "', array_slice($line, 3)) . '"'; |
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} |
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if (($propertyToExamine == 'status-code') && ($operator == 'not-equals')) { |
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$reason .= ' - it was: ' . $val; |
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} |
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if (self::evaluateCondition($operator, $valType, $val, $arg1, $arg2)) { |
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return new TestResult($status, $reason); |
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} |
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return null; |
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} |
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/** |
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* Interpret a response using an interpretation table. |
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* |
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* @param HttpResponse $response |
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* @param array $interpretationTable |
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* |
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* @return TestResult If there is no match, the test result will have status = false and |
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* info = "no-match". |
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*/ |
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public static function interpret($response, $interpretationTable) |
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{ |
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foreach ($interpretationTable as $i => $line) { |
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$testResult = self::interpretLine($response, $line); |
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if (!is_null($testResult)) { |
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return $testResult; |
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} |
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} |
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return new TestResult(null, 'no-match'); |
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} |
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} |
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rosell-dk /
htaccess-capability-tester
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