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| 1 | <?php |
| 2 | |
| 3 | namespace HtaccessCapabilityTester\Testers\Helpers; |
| 4 | |
| 5 | use \HtaccessCapabilityTester\HttpResponse; |
| 6 | use \HtaccessCapabilityTester\TestResult; |
| 7 | use \HtaccessCapabilityTester\Testers\AbstractTester; |
| 8 | |
| 9 | /** |
| 10 | * Class for interpreting responses using a defined interpretation table. |
| 11 | * |
| 12 | * @package HtaccessCapabilityTester |
| 13 | * @author Bjørn Rosell <it@rosell.dk> |
| 14 | * @since Class available since 0.7 |
| 15 | */ |
| 16 | class ResponseInterpreter |
| 17 | { |
| 18 | |
| 19 | /** |
| 20 | * Parse status string (failure | success | inconclusive) to bool|null. |
| 21 | * |
| 22 | * @param string $statusString (failure | success | inconclusive) |
| 23 | * @return bool|null |
| 24 | */ |
| 25 | private static function parseStatusString($statusString) |
| 26 | { |
| 27 | $status = null; |
| 28 | switch ($statusString) { |
| 29 | case 'failure': |
| 30 | $status = false; |
| 31 | break; |
| 32 | case 'inconclusive': |
| 33 | $status = null; |
| 34 | break; |
| 35 | case 'success': |
| 36 | $status = true; |
| 37 | break; |
| 38 | } |
| 39 | return $status; |
| 40 | } |
| 41 | |
| 42 | /** |
| 43 | * Interpret headers line |
| 44 | * |
| 45 | * @param HttpResponse $response |
| 46 | * @param string $operator (has-key | ) |
| 47 | * @param string $fieldName field name of the header |
| 48 | * @param string $fieldValue (optional) field value to look for. Only required when |
| 49 | * operator is "contains-key-value" or "not-contains-key-value" |
| 50 | * @return bool true if the condition matches, false otherwise |
| 51 | */ |
| 52 | private static function evaluateHeadersLine($response, $operator, $fieldName, $fieldValue) |
| 53 | { |
| 54 | switch ($operator) { |
| 55 | case 'contains-key': |
| 56 | return $response->hasHeader($fieldName); |
| 57 | case 'not-contains-key': |
| 58 | return (!($response->hasHeader($fieldName))); |
| 59 | case 'contains-key-value': |
| 60 | return $response->hasHeaderValue($fieldName, $fieldValue); |
| 61 | case 'not-contains-key-value': |
| 62 | return (!($response->hasHeaderValue($fieldName, $fieldValue))); |
| 63 | } |
| 64 | return false; |
| 65 | } |
| 66 | |
| 67 | /** |
| 68 | * Interpret string line (body or status-code) |
| 69 | * |
| 70 | * @param HttpResponse $response |
| 71 | * @param string $property ("body" or "status-code") |
| 72 | * @param string $operator (is-empty | equals | not-equals | begins-with) |
| 73 | * @param string $arg1 (only required for some operators) |
| 74 | * |
| 75 | * @return bool true if the condition matches, false otherwise |
| 76 | */ |
| 77 | private static function evaluateStringLine($response, $property, $operator, $arg1) |
| 78 | { |
| 79 | $val = ''; |
| 80 | switch ($property) { |
| 81 | case 'status-code': |
| 82 | $val = $response->statusCode; |
| 83 | break; |
| 84 | case 'body': |
| 85 | $val = $response->body; |
| 86 | break; |
| 87 | } |
| 88 | |
| 89 | switch ($operator) { |
| 90 | case 'is-empty': |
| 91 | return ($val == ''); |
| 92 | case 'equals': |
| 93 | return ($val == $arg1); |
| 94 | case 'not-equals': |
| 95 | return ($val != $arg1); |
| 96 | case 'begins-with': |
| 97 | return (strpos($val, $arg1) === 0); |
| 98 | } |
| 99 | return false; |
| 100 | } |
| 101 | |
| 102 | |
| 103 | /** |
| 104 | * Interpret line. |
| 105 | * |
| 106 | * @param HttpResponse $response |
| 107 | * @param array $line |
| 108 | * |
| 109 | * @return TestResult|null If the condition matches, a TestResult is returned, otherwise null |
| 110 | */ |
| 111 | private static function interpretLine($response, $line) |
| 112 | { |
| 113 | // ie: |
| 114 | // ['inconclusive', 'body', 'is-empty'], |
| 115 | // ['failure', 'statusCode', 'equals', '500'] |
| 116 | // ['success', 'headers', 'contains-key-value', 'X-Response-Header-Test', 'test'], |
| 117 | |
| 118 | $status = self::parseStatusString($line[0]); |
| 119 | |
| 120 | if (!isset($line[1])) { |
| 121 | return new TestResult($status, ''); |
| 122 | } |
| 123 | |
| 124 | $propertyToExamine = $line[1]; |
| 125 | $operator = $line[2]; |
| 126 | $arg1 = (isset($line[3]) ? $line[3] : ''); |
| 127 | $arg2 = (isset($line[4]) ? $line[4] : ''); |
| 128 | |
| 129 | if ($propertyToExamine == 'headers') { |
| 130 | $match = self::evaluateHeadersLine($response, $operator, $arg1, $arg2); |
| 131 | } else { |
| 132 | $match = self::evaluateStringLine($response, $propertyToExamine, $operator, $arg1); |
| 133 | } |
| 134 | if ($match) { |
| 135 | $reason = $propertyToExamine . ' ' . $operator; |
| 136 | if (isset($line[3])) { |
| 137 | $reason .= ' "' . implode('" "', array_slice($line, 3)) . '"'; |
| 138 | } |
| 139 | /* |
| 140 | if (($propertyToExamine == 'status-code') && ($operator == 'not-equals') && (gettype($val) == 'string')) { |
| 141 | $reason .= ' - it was: ' . $val; |
| 142 | }*/ |
| 143 | return new TestResult($status, $reason); |
| 144 | } |
| 145 | |
| 146 | return null; |
| 147 | } |
| 148 | |
| 149 | /** |
| 150 | * Interpret a response using an interpretation table. |
| 151 | * |
| 152 | * @param HttpResponse $response |
| 153 | * @param array $interpretationTable |
| 154 | * |
| 155 | * @return TestResult If there is no match, the test result will have status = false and |
| 156 | * info = "no-match". |
| 157 | */ |
| 158 | public static function interpret($response, $interpretationTable) |
| 159 | { |
| 160 | foreach ($interpretationTable as $i => $line) { |
| 161 | $testResult = self::interpretLine($response, $line); |
| 162 | if (!is_null($testResult)) { |
| 163 | return $testResult; |
| 164 | } |
| 165 | } |
| 166 | return new TestResult(null, 'no-match'); |
| 167 | } |
| 168 | } |