nazar-pc /
CleverStyle-Framework
| Total Complexity | 76 |
| Total Lines | 462 |
| Duplicated Lines | 0 % |
| Coverage | 99.5% |
| Changes | 0 | ||
Complex classes like Data_and_files often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use Data_and_files, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 13 | trait Data_and_files { |
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| 14 | /** |
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| 15 | * Data array, similar to `$_POST` |
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| 16 | * |
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| 17 | * @var array |
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| 18 | */ |
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| 19 | public $data; |
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| 20 | /** |
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| 21 | * Normalized files array |
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| 22 | * |
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| 23 | * Each file item can be either single file or array of files (in contrast with native PHP arrays where each field like `name` become an array) with keys |
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| 24 | * `name`, `type`, `size`, `tmp_name`, `stream` and `error` |
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| 25 | * |
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| 26 | * `name`, `type`, `size` and `error` keys are similar to native PHP fields in `$_FILES`; `tmp_name` might not be temporary file, but file descriptor |
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| 27 | * wrapper like `request-file:///file` instead and `stream` is resource like obtained with `fopen('/tmp/xyz', 'rb')` |
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| 28 | * |
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| 29 | * @var array[] |
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| 30 | */ |
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| 31 | public $files; |
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| 32 | /** |
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| 33 | * Data stream resource, similar to `fopen('php://input', 'rb')` |
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| 34 | * |
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| 35 | * Make sure you're controlling position in stream where you read something, if code in some other place might seek on this stream |
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| 36 | * |
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| 37 | * Stream is read-only |
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| 38 | * |
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| 39 | * @var null|resource |
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| 40 | */ |
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| 41 | public $data_stream; |
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| 42 | /** |
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| 43 | * `$this->init_server()` assumed to be called already |
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| 44 | * |
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| 45 | * @param array $data Typically `$_POST` |
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| 46 | * @param array[] $files Typically `$_FILES`; might be like native PHP array `$_FILES` or normalized; each file item MUST contain keys |
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| 47 | * `name`, `type`, `size`, `error` and at least one of `tmp_name` or `stream` |
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| 48 | * @param null|resource|string $data_stream String, like `php://input` or resource, like `fopen('php://input', 'rb')` with request body, will be parsed for |
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| 49 | * data and files if necessary |
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| 50 | * @param bool $copy_stream Sometimes data stream can only being read once (like most of times with `php://input`), so it is necessary to |
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| 51 | * copy it and store its contents for longer period of time |
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| 52 | * |
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| 53 | * @throws ExitException |
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| 54 | */ |
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| 55 | 78 | public function init_data_and_files ($data = [], $files = [], $data_stream = null, $copy_stream = true) { |
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| 56 | 78 | if (is_resource($this->data_stream)) { |
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| 57 | 27 | fclose($this->data_stream); |
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| 58 | } |
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| 59 | 78 | if (in_array($this->method, ['GET', 'HEAD', 'OPTIONS'])) { |
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Bug
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| 60 | 42 | $this->data = []; |
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| 61 | 42 | $this->files = []; |
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| 62 | 42 | $this->data_stream = null; |
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| 63 | 42 | return; |
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| 64 | } |
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| 65 | 36 | $this->data = $data; |
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| 66 | 36 | $this->files = $this->normalize_files($files); |
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| 67 | 36 | $this->data_stream = $this->prepare_data_stream($data_stream, $copy_stream); |
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| 68 | /** |
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| 69 | * If we don't appear to have any data or files detected - probably, we need to parse request ourselves |
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| 70 | */ |
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| 71 | 36 | if (!$this->data && !$this->files && is_resource($this->data_stream)) { |
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| 72 | 33 | $this->parse_data_stream(); |
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| 73 | } |
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| 74 | // Hack: for compatibility we'll override $_POST since it might be filled during parsing |
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| 75 | 36 | $_POST = $this->data; |
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| 76 | 36 | } |
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| 77 | /** |
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| 78 | * Get data item by name |
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| 79 | * |
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| 80 | * @param string[]|string[][] $name |
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| 81 | * |
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| 82 | * @return mixed|mixed[]|null Data items (or associative array of data items) if exists or `null` otherwise (in case if `$name` is an array even one |
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| 83 | * missing key will cause the whole thing to fail) |
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| 84 | */ |
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| 85 | 60 | public function data (...$name) { |
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| 86 | 60 | return $this->get_property_items('data', $name); |
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| 87 | } |
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| 88 | /** |
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| 89 | * Get file item by name |
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| 90 | * |
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| 91 | * @param string $name |
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| 92 | * |
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| 93 | * @return array|null File item if exists or `null` otherwise |
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| 94 | */ |
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| 95 | 3 | public function files ($name) { |
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| 96 | 3 | return @$this->files[$name]; |
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| 97 | } |
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| 98 | /** |
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| 99 | * @param array[] $files |
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| 100 | * @param string $file_path |
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| 101 | * |
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| 102 | * @return array[] |
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| 103 | */ |
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| 104 | 36 | protected function normalize_files ($files, $file_path = '') { |
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| 105 | 36 | if (!$files) { |
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| 106 | 33 | return $files; |
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| 107 | } |
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| 108 | 9 | $this->register_request_file_stream_wrapper(); |
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| 109 | 9 | if (!isset($files['name'])) { |
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| 110 | 9 | foreach ($files as $field => &$file) { |
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| 111 | 9 | $file = $this->normalize_files($file, "$file_path/$field"); |
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| 112 | } |
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| 113 | 9 | return $files; |
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| 114 | } |
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| 115 | 9 | if (is_array($files['name'])) { |
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| 116 | 3 | $result = []; |
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| 117 | 3 | foreach (array_keys($files['name']) as $index) { |
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| 118 | 3 | $result[] = $this->normalize_file( |
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| 119 | [ |
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| 120 | 3 | 'name' => $files['name'][$index], |
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| 121 | 3 | 'type' => $files['type'][$index], |
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| 122 | 3 | 'size' => $files['size'][$index], |
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| 123 | 3 | 'tmp_name' => @$files['tmp_name'][$index], |
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| 124 | 3 | 'stream' => @$files['stream'][$index], |
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| 125 | 3 | 'error' => $files['error'][$index] |
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| 126 | ], |
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| 127 | 3 | "$file_path/$index" |
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| 128 | ); |
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| 129 | } |
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| 130 | 3 | return $result; |
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| 131 | } else { |
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| 132 | 9 | return $this->normalize_file($files, $file_path); |
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| 133 | } |
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| 134 | } |
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| 135 | 9 | protected function register_request_file_stream_wrapper () { |
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| 136 | 9 | if (!in_array('request-file', stream_get_wrappers())) { |
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| 137 | stream_wrapper_register('request-file', File_stream::class); |
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| 138 | } |
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| 139 | 9 | } |
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| 140 | /** |
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| 141 | * @param array $file |
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| 142 | * @param string $file_path |
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| 143 | * |
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| 144 | * @return array |
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| 145 | */ |
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| 146 | 9 | protected function normalize_file ($file, $file_path) { |
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| 147 | $file += [ |
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| 148 | 9 | 'tmp_name' => null, |
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| 149 | 'stream' => null |
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| 150 | ]; |
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| 151 | 9 | if (isset($file['tmp_name']) && $file['stream'] === null) { |
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| 152 | 3 | $file['stream'] = fopen($file['tmp_name'], 'rb'); |
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| 153 | } |
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| 154 | 9 | if (isset($file['stream']) && !$file['tmp_name']) { |
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| 155 | 9 | $file['tmp_name'] = "request-file://$file_path"; |
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| 156 | } |
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| 157 | 9 | if ($file['tmp_name'] === null && $file['stream'] === null) { |
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| 158 | 6 | $file['error'] = UPLOAD_ERR_NO_FILE; |
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| 159 | } |
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| 160 | 9 | return $file; |
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| 161 | } |
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| 162 | /** |
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| 163 | * @param null|resource|string $data_stream |
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| 164 | * @param bool $copy_stream |
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| 165 | * |
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| 166 | * @return null|resource |
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| 167 | */ |
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| 168 | 36 | protected function prepare_data_stream ($data_stream, $copy_stream) { |
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| 169 | 36 | $data_stream = is_string($data_stream) ? fopen($data_stream, 'rb') : $data_stream; |
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| 170 | 36 | if (!is_resource($data_stream)) { |
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| 171 | 3 | return null; |
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| 172 | } |
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| 173 | 33 | if (!$copy_stream) { |
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| 174 | 6 | return $data_stream; |
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| 175 | } |
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| 176 | 33 | $new_data_stream = fopen('php://temp', 'w+b'); |
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| 177 | 33 | rewind($data_stream); |
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| 178 | 33 | stream_copy_to_stream($data_stream, $new_data_stream); |
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| 179 | 33 | fclose($data_stream); |
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| 180 | 33 | return $new_data_stream; |
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| 181 | } |
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| 182 | /** |
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| 183 | * Parsing request body for following Content-Type: `application/json`, `application/x-www-form-urlencoded` and `multipart/form-data` |
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| 184 | * |
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| 185 | * @throws ExitException |
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| 186 | */ |
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| 187 | 33 | protected function parse_data_stream () { |
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| 188 | 33 | $content_type = $this->header('content-type'); |
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| 189 | 33 | rewind($this->data_stream); |
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| 190 | /** |
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| 191 | * application/json |
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| 192 | */ |
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| 193 | 33 | if (preg_match('#^application/([^+\s]+\+)?json#', $content_type)) { |
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| 194 | 3 | $this->data = _json_decode(stream_get_contents($this->data_stream)) ?: []; |
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| 195 | 3 | return; |
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| 196 | } |
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| 197 | /** |
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| 198 | * application/x-www-form-urlencoded |
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| 199 | */ |
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| 200 | 30 | if (strpos($content_type, 'application/x-www-form-urlencoded') === 0) { |
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| 201 | 3 | @parse_str(stream_get_contents($this->data_stream), $this->data); |
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| 202 | 3 | return; |
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| 203 | } |
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| 204 | /** |
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| 205 | * multipart/form-data |
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| 206 | */ |
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| 207 | 27 | if (preg_match('#multipart/form-data;.*boundary="?([^;"]{1,70})(?:"|;|$)#Ui', $content_type, $matches)) { |
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| 208 | try { |
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| 209 | 6 | $parts = $this->parse_multipart_into_parts($this->data_stream, trim($matches[1])) ?: []; |
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| 210 | 6 | list($this->data, $files) = $this->parse_multipart_analyze_parts($this->data_stream, $parts); |
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| 211 | 6 | $this->files = $this->normalize_files($files); |
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| 212 | 3 | } catch (UnexpectedValueException $e) { |
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| 213 | // Do nothing, if parsing failed then we'll just leave `::$data` and `::$files` empty |
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| 214 | } |
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| 215 | } |
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| 216 | 27 | } |
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| 217 | /** |
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| 218 | * Parse content stream |
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| 219 | * |
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| 220 | * @param resource $stream |
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| 221 | * @param string $boundary |
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| 222 | * |
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| 223 | * @return array[]|false |
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| 224 | * |
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| 225 | * @throws UnexpectedValueException |
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| 226 | * @throws ExitException |
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| 227 | */ |
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| 228 | 6 | protected function parse_multipart_into_parts ($stream, $boundary) { |
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| 229 | 6 | $parts = []; |
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| 230 | 6 | $crlf = "\r\n"; |
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| 231 | 6 | $position = 0; |
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| 232 | 6 | $body = ''; |
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| 233 | 6 | list($offset, $body) = $this->parse_multipart_find($stream, $body, "--$boundary$crlf"); |
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| 234 | /** |
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| 235 | * strlen doesn't take into account trailing CRLF since we'll need it in loop below |
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| 236 | */ |
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| 237 | 6 | $position += $offset + strlen("--$boundary"); |
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| 238 | 6 | $body = substr($body, strlen("--$boundary")); |
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| 239 | /** |
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| 240 | * Each part always starts with CRLF |
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| 241 | */ |
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| 242 | 6 | while (strpos($body, $crlf) === 0) { |
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| 243 | 6 | $position += 2; |
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| 244 | 6 | $body = substr($body, 2); |
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| 245 | $part = [ |
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| 246 | 6 | 'headers' => [ |
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| 247 | 6 | 'offset' => $position, |
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| 248 | 6 | 'size' => 0 |
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| 249 | ], |
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| 250 | 'body' => [ |
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| 251 | 'offset' => 0, |
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| 252 | 'size' => 0 |
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| 253 | ] |
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| 254 | ]; |
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| 255 | 6 | if (strpos($body, $crlf) === 0) { |
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| 256 | /** |
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| 257 | * No headers |
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| 258 | */ |
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| 259 | 3 | $position += 2; |
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| 260 | 3 | $body = substr($body, 2); |
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| 261 | } else { |
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| 262 | /** |
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| 263 | * Find headers end in order to determine size |
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| 264 | */ |
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| 265 | 6 | list($offset, $body) = $this->parse_multipart_find($stream, $body, $crlf.$crlf); |
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| 266 | 6 | $part['headers']['size'] = $offset; |
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| 267 | 6 | $position += $offset + 4; |
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| 268 | 6 | $body = substr($body, 4); |
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| 269 | } |
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| 270 | 6 | $part['body']['offset'] = $position; |
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| 271 | /** |
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| 272 | * Find body end in order to determine its size |
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| 273 | */ |
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| 274 | 6 | list($offset, $body) = $this->parse_multipart_find($stream, $body, "$crlf--$boundary"); |
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| 275 | 6 | $part['body']['size'] = $offset; |
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| 276 | 6 | $position += $offset + strlen("$crlf--$boundary"); |
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| 277 | 6 | $body = substr($body, strlen("$crlf--$boundary")); |
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| 278 | 6 | if ($part['headers']['size']) { |
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| 279 | 6 | $parts[] = $part; |
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| 280 | } |
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| 281 | } |
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| 282 | /** |
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| 283 | * Last boundary after all parts ends with '--' and we don't care what rubbish happens after it |
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| 284 | */ |
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| 285 | 6 | $post_max_size = $this->post_max_size(); |
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| 286 | 6 | if (strpos($body, '--') !== 0) { |
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| 287 | 3 | return false; |
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| 288 | } |
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| 289 | /** |
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| 290 | * Check whether body size is bigger than allowed limit |
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| 291 | */ |
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| 292 | 6 | if ($position + strlen($body) > $post_max_size) { |
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| 293 | 3 | throw new ExitException(413); |
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| 294 | } |
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| 295 | 6 | return $parts; |
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| 296 | } |
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| 297 | /** |
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| 298 | * @param resource $stream |
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| 299 | * @param array[] $parts |
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| 300 | * |
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| 301 | * @return array[] |
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| 302 | */ |
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| 303 | 6 | protected function parse_multipart_analyze_parts ($stream, $parts) { |
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| 323 | } |
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| 324 | /** |
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| 325 | * @param array $headers |
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| 326 | * |
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| 327 | * @return bool |
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| 328 | */ |
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| 329 | 6 | protected function parse_multipart_analyze_parts_is_valid ($headers) { |
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| 330 | return |
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| 331 | 6 | isset($headers['content-disposition'][0], $headers['content-disposition']['name']) && |
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| 332 | 6 | $headers['content-disposition'][0] == 'form-data'; |
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| 333 | } |
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| 334 | /** |
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| 335 | * @param array $headers |
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| 336 | * @param resource $stream |
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| 337 | * @param int $offset |
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| 338 | * @param int $size |
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| 339 | * |
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| 340 | * @return array |
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| 341 | */ |
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| 342 | 6 | protected function parse_multipart_analyze_parts_file ($headers, $stream, $offset, $size) { |
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| 343 | $file = [ |
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| 344 | 6 | 'name' => $headers['content-disposition']['filename'], |
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| 345 | 6 | 'type' => @$headers['content-type'] ?: 'application/octet-stream', |
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| 346 | 6 | 'size' => $size, |
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| 347 | 6 | 'stream' => Stream_slicer::slice($stream, $offset, $size), |
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| 348 | 6 | 'error' => UPLOAD_ERR_OK |
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| 349 | ]; |
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| 350 | 6 | if ($file['name'] === '') { |
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| 351 | 3 | $file['type'] = ''; |
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| 352 | 3 | $file['stream'] = null; |
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| 353 | 3 | $file['error'] = UPLOAD_ERR_NO_FILE; |
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| 354 | 6 | } elseif ($file['size'] > $this->upload_max_file_size()) { |
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| 355 | 3 | $file['stream'] = null; |
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| 356 | 3 | $file['error'] = UPLOAD_ERR_INI_SIZE; |
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| 357 | } |
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| 358 | 6 | return $file; |
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| 359 | } |
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| 360 | /** |
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| 361 | * @param resource $stream |
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| 362 | * @param int $offset |
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| 363 | * @param int $size |
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| 364 | * |
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| 365 | * @return string |
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| 366 | */ |
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| 367 | 6 | protected function parse_multipart_analyze_parts_content ($stream, $offset, $size) { |
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| 368 | 6 | return $size ? stream_get_contents($stream, $size, $offset) : ''; |
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| 369 | } |
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| 370 | /** |
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| 371 | * @return int |
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| 372 | */ |
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| 373 | 6 | protected function post_max_size () { |
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| 374 | 6 | return $this->convert_size_to_bytes(ini_get('post_max_size')); |
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| 375 | } |
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| 376 | /** |
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| 377 | * @return int |
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| 378 | */ |
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| 379 | 6 | protected function upload_max_file_size () { |
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| 380 | 6 | return $this->convert_size_to_bytes(ini_get('upload_max_filesize')); |
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| 381 | } |
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| 382 | /** |
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| 383 | * @param int|string $size |
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| 384 | * |
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| 385 | * @return int |
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| 386 | */ |
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| 387 | 6 | protected function convert_size_to_bytes ($size) { |
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| 388 | 6 | switch (strtolower(substr($size, -1))) { |
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| 389 | 6 | case 'g'; |
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| 390 | 3 | $size = (int)$size * 1024; |
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| 391 | 6 | case 'm'; |
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| 392 | 3 | $size = (int)$size * 1024; |
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| 393 | 3 | case 'k'; |
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| 394 | 6 | $size = (int)$size * 1024; |
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| 395 | } |
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| 396 | 6 | return (int)$size ?: PHP_INT_MAX; |
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| 397 | } |
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| 398 | /** |
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| 399 | * @param resource $stream |
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| 400 | * @param string $next_data |
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| 401 | * @param string $target |
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| 402 | * |
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| 403 | * @return array |
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| 404 | * |
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| 405 | * @throws UnexpectedValueException |
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| 406 | */ |
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| 407 | 6 | protected function parse_multipart_find ($stream, $next_data, $target) { |
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| 426 | } |
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| 427 | /** |
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| 428 | * @param string $content |
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| 429 | * |
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| 430 | * @return array |
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| 431 | */ |
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| 432 | 6 | protected function parse_multipart_headers ($content) { |
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| 453 | } |
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| 454 | /** |
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| 455 | * @param array $source |
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| 456 | * @param string $name |
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| 457 | * @param array|string $value |
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| 458 | */ |
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| 459 | 6 | protected function parse_multipart_set_target (&$source, $name, $value) { |
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| 475 | 6 | } |
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| 476 | } |
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| 477 |
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