Webklex /
php-imap
| Total Complexity | 106 |
| Total Lines | 535 |
| Duplicated Lines | 0 % |
| Changes | 3 | ||
| Bugs | 1 | Features | 0 |
Complex classes like Header 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 Header, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 25 | class Header { |
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| 26 | |||
| 27 | /** |
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| 28 | * Raw header |
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| 29 | * |
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| 30 | * @var string $raw |
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| 31 | */ |
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| 32 | public $raw = ""; |
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| 33 | |||
| 34 | /** |
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| 35 | * Attribute holder |
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| 36 | * |
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| 37 | * @var array $attributes |
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| 38 | */ |
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| 39 | protected $attributes = []; |
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| 40 | |||
| 41 | /** |
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| 42 | * Config holder |
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| 43 | * |
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| 44 | * @var array $config |
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| 45 | */ |
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| 46 | protected $config = []; |
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| 47 | |||
| 48 | /** |
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| 49 | * Fallback Encoding |
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| 50 | * |
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| 51 | * @var string |
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| 52 | */ |
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| 53 | public $fallback_encoding = 'UTF-8'; |
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| 54 | |||
| 55 | /** |
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| 56 | * Header constructor. |
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| 57 | * @param $raw_header |
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| 58 | * |
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| 59 | * @throws InvalidMessageDateException |
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| 60 | */ |
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| 61 | public function __construct($raw_header) { |
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| 65 | } |
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| 66 | |||
| 67 | /** |
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| 68 | * Call dynamic attribute setter and getter methods |
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| 69 | * @param string $method |
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| 70 | * @param array $arguments |
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| 71 | * |
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| 72 | * @return mixed |
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| 73 | * @throws MethodNotFoundException |
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| 74 | */ |
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| 75 | public function __call($method, $arguments) { |
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| 76 | if(strtolower(substr($method, 0, 3)) === 'get') { |
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| 77 | $name = preg_replace('/(.)(?=[A-Z])/u', '$1_', substr(strtolower($method), 3)); |
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| 78 | |||
| 79 | if(in_array($name, array_keys($this->attributes))) { |
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| 80 | return $this->attributes[$name]; |
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| 81 | } |
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| 82 | |||
| 83 | } |
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| 84 | |||
| 85 | throw new MethodNotFoundException("Method ".self::class.'::'.$method.'() is not supported'); |
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| 86 | } |
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| 87 | |||
| 88 | /** |
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| 89 | * Magic getter |
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| 90 | * @param $name |
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| 91 | * |
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| 92 | * @return mixed|null |
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| 93 | */ |
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| 94 | public function __get($name) { |
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| 95 | return $this->get($name); |
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| 96 | } |
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| 97 | |||
| 98 | /** |
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| 99 | * Get a specific header attribute |
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| 100 | * @param $name |
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| 101 | * |
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| 102 | * @return mixed|null |
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| 103 | */ |
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| 104 | public function get($name) { |
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| 105 | if(isset($this->attributes[$name])) { |
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| 106 | return $this->attributes[$name]; |
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| 107 | } |
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| 108 | |||
| 109 | return null; |
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| 110 | } |
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| 111 | |||
| 112 | /** |
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| 113 | * Perform a regex match all on the raw header and return the first result |
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| 114 | * @param $pattern |
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| 115 | * |
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| 116 | * @return mixed|null |
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| 117 | */ |
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| 118 | public function find($pattern) { |
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| 119 | if (preg_match_all($pattern, $this->raw, $matches)) { |
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| 120 | if (isset($matches[1])) { |
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| 121 | if(count($matches[1]) > 0) { |
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| 122 | return $matches[1][0]; |
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| 123 | } |
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| 124 | } |
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| 125 | } |
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| 126 | return null; |
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| 127 | } |
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| 128 | |||
| 129 | /** |
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| 130 | * Parse the raw headers |
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| 131 | * |
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| 132 | * @throws InvalidMessageDateException |
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| 133 | */ |
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| 134 | protected function parse(){ |
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| 135 | $header = $this->rfc822_parse_headers($this->raw); |
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| 136 | |||
| 137 | $this->extractAddresses($header); |
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| 138 | |||
| 139 | if (property_exists($header, 'subject')) { |
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| 140 | $this->attributes["subject"] = $this->decode($header->subject); |
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| 141 | } |
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| 142 | if (property_exists($header, 'references')) { |
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| 143 | $this->attributes["references"] = $this->decode($header->references); |
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| 144 | } |
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| 145 | if (property_exists($header, 'message_id')) { |
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| 146 | $this->attributes["message_id"] = str_replace(['<', '>'], '', $header->message_id); |
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| 147 | } |
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| 148 | |||
| 149 | $this->parseDate($header); |
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| 150 | foreach ($header as $key => $value) { |
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| 151 | $key = trim(rtrim(strtolower($key))); |
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| 152 | if(!isset($this->attributes[$key])){ |
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| 153 | $this->attributes[$key] = $value; |
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| 154 | } |
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| 155 | } |
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| 156 | |||
| 157 | $this->extractHeaderExtensions(); |
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| 158 | $this->findPriority(); |
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| 159 | } |
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| 160 | |||
| 161 | /** |
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| 162 | * Parse mail headers from a string |
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| 163 | * @link https://php.net/manual/en/function.imap-rfc822-parse-headers.php |
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| 164 | * @param $raw_headers |
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| 165 | * |
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| 166 | * @return object |
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| 167 | */ |
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| 168 | public function rfc822_parse_headers($raw_headers){ |
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| 169 | $headers = []; |
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| 170 | $imap_headers = []; |
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| 171 | if (extension_loaded('imap')) { |
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| 172 | $imap_headers = (array) \imap_rfc822_parse_headers($this->raw); |
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| 173 | } |
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| 174 | |||
| 175 | $lines = explode("\r\n", $raw_headers); |
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| 176 | $prev_header = null; |
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| 177 | foreach($lines as $line) { |
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| 178 | if (substr($line, 0, 1) === "\t") { |
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| 179 | $line = substr($line, 2); |
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| 180 | if ($prev_header !== null) { |
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| 181 | $headers[$prev_header][] = $line; |
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| 182 | } |
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| 183 | }else{ |
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| 184 | if (($pos = strpos($line, ":")) > 0) { |
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| 185 | $key = strtolower(substr($line, 0, $pos)); |
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| 186 | $value = trim(rtrim(strtolower(substr($line, $pos + 1)))); |
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| 187 | $headers[$key] = [$value]; |
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| 188 | $prev_header = $key; |
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| 189 | } |
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| 190 | } |
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| 191 | } |
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| 192 | |||
| 193 | foreach($headers as $key => $values) { |
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| 194 | if (isset($imap_headers[$key])) continue; |
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| 195 | $value = null; |
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| 196 | switch($key){ |
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| 197 | case 'from': |
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| 198 | case 'to': |
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| 199 | case 'cc': |
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| 200 | case 'bcc': |
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| 201 | case 'reply_to': |
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| 202 | case 'sender': |
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| 203 | $value = $this->decodeAddresses($values); |
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| 204 | $headers[$key."address"] = implode(", ", $values); |
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| 205 | break; |
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| 206 | default: |
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| 207 | $value = isset($values[0]) ? $values[0] : $value; |
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| 208 | break; |
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| 209 | } |
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| 210 | $headers[$key] = $value; |
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| 211 | } |
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| 212 | |||
| 213 | return (object) array_merge($headers, $imap_headers); |
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| 214 | } |
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| 215 | |||
| 216 | /** |
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| 217 | * Decode MIME header elements |
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| 218 | * @link https://php.net/manual/en/function.imap-mime-header-decode.php |
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| 219 | * @param string $text The MIME text |
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| 220 | * |
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| 221 | * @return array The decoded elements are returned in an array of objects, where each |
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| 222 | * object has two properties, charset and text. |
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| 223 | */ |
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| 224 | public function mime_header_decode($text){ |
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| 225 | if (extension_loaded('imap')) { |
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| 226 | return \imap_mime_header_decode($text); |
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| 227 | } |
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| 228 | $charset = $this->getEncoding($text); |
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| 229 | return [(object)[ |
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| 230 | "charset" => $charset, |
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| 231 | "text" => $this->convertEncoding($text, $charset) |
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| 232 | ]]; |
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| 233 | } |
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| 234 | |||
| 235 | /** |
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| 236 | * Check if a given pair of strings has ben decoded |
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| 237 | * @param $encoded |
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| 238 | * @param $decoded |
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| 239 | * |
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| 240 | * @return bool |
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| 241 | */ |
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| 242 | private function notDecoded($encoded, $decoded) { |
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| 243 | return 0 === strpos($decoded, '=?') |
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| 244 | && strlen($decoded) - 2 === strpos($decoded, '?=') |
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| 245 | && false !== strpos($encoded, $decoded); |
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| 246 | } |
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| 247 | |||
| 248 | /** |
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| 249 | * Convert the encoding |
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| 250 | * @param $str |
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| 251 | * @param string $from |
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| 252 | * @param string $to |
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| 253 | * |
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| 254 | * @return mixed|string |
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| 255 | */ |
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| 256 | public function convertEncoding($str, $from = "ISO-8859-2", $to = "UTF-8") { |
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| 257 | |||
| 258 | $from = EncodingAliases::get($from, $this->fallback_encoding); |
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| 259 | $to = EncodingAliases::get($to, $this->fallback_encoding); |
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| 260 | |||
| 261 | if ($from === $to) { |
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| 262 | return $str; |
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| 263 | } |
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| 264 | |||
| 265 | // We don't need to do convertEncoding() if charset is ASCII (us-ascii): |
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| 266 | // ASCII is a subset of UTF-8, so all ASCII files are already UTF-8 encoded |
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| 267 | // https://stackoverflow.com/a/11303410 |
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| 268 | // |
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| 269 | // us-ascii is the same as ASCII: |
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| 270 | // ASCII is the traditional name for the encoding system; the Internet Assigned Numbers Authority (IANA) |
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| 271 | // prefers the updated name US-ASCII, which clarifies that this system was developed in the US and |
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| 272 | // based on the typographical symbols predominantly in use there. |
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| 273 | // https://en.wikipedia.org/wiki/ASCII |
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| 274 | // |
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| 275 | // convertEncoding() function basically means convertToUtf8(), so when we convert ASCII string into UTF-8 it gets broken. |
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| 276 | if (strtolower($from) == 'us-ascii' && $to == 'UTF-8') { |
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| 277 | return $str; |
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| 278 | } |
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| 279 | |||
| 280 | try { |
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| 281 | if (function_exists('iconv') && $from != 'UTF-7' && $to != 'UTF-7') { |
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| 282 | return iconv($from, $to, $str); |
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| 283 | } else { |
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| 284 | if (!$from) { |
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| 285 | return mb_convert_encoding($str, $to); |
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| 286 | } |
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| 287 | return mb_convert_encoding($str, $to, $from); |
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| 288 | } |
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| 289 | } catch (\Exception $e) { |
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| 290 | if (strstr($from, '-')) { |
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| 291 | $from = str_replace('-', '', $from); |
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| 292 | return $this->convertEncoding($str, $from, $to); |
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| 293 | } else { |
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| 294 | return $str; |
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| 295 | } |
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| 296 | } |
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| 297 | } |
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| 298 | |||
| 299 | /** |
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| 300 | * Get the encoding of a given abject |
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| 301 | * @param object|string $structure |
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| 302 | * |
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| 303 | * @return string |
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| 304 | */ |
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| 305 | public function getEncoding($structure) { |
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| 306 | if (property_exists($structure, 'parameters')) { |
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| 307 | foreach ($structure->parameters as $parameter) { |
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| 308 | if (strtolower($parameter->attribute) == "charset") { |
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| 309 | return EncodingAliases::get($parameter->value, $this->fallback_encoding); |
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| 310 | } |
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| 311 | } |
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| 312 | }elseif (property_exists($structure, 'charset')) { |
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| 313 | return EncodingAliases::get($structure->charset, $this->fallback_encoding); |
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| 314 | }elseif (is_string($structure) === true){ |
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| 315 | return mb_detect_encoding($structure); |
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| 316 | } |
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| 317 | |||
| 318 | return $this->fallback_encoding; |
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| 319 | } |
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| 320 | |||
| 321 | /** |
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| 322 | * Try to decode a specific header |
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| 323 | * @param $value |
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| 324 | * |
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| 325 | * @return string|null |
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| 326 | */ |
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| 327 | private function decode($value) { |
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| 328 | $original_value = $value; |
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| 329 | $decoder = $this->config['decoder']['message']; |
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| 330 | |||
| 331 | if ($value !== null) { |
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| 332 | if($decoder === 'utf-8' && extension_loaded('imap')) { |
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| 333 | $value = \imap_utf8($value); |
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| 334 | if (strpos(strtolower($value), '=?utf-8?') === 0) { |
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| 335 | $value = mb_decode_mimeheader($value); |
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| 336 | } |
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| 337 | if ($this->notDecoded($original_value, $value)) { |
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| 338 | $decoded_value = $this->mime_header_decode($value); |
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| 339 | if (count($decoded_value) > 0) { |
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| 340 | if(property_exists($decoded_value[0], "text")) { |
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| 341 | $value = $decoded_value[0]->text; |
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| 342 | } |
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| 343 | } |
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| 344 | } |
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| 345 | }elseif($decoder === 'iconv') { |
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| 346 | $value = iconv_mime_decode($value); |
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| 347 | }else{ |
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| 348 | $value = mb_decode_mimeheader($value); |
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| 349 | } |
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| 350 | |||
| 351 | if (strpos(strtolower($value), '=?utf-8?') === 0) { |
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| 352 | $value = mb_decode_mimeheader($value); |
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| 353 | } |
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| 354 | |||
| 355 | if ($this->notDecoded($original_value, $value)) { |
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| 356 | $value = $this->convertEncoding($original_value, $this->getEncoding($original_value)); |
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| 357 | } |
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| 358 | } |
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| 359 | |||
| 360 | return $value; |
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| 361 | } |
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| 362 | |||
| 363 | /** |
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| 364 | * Try to extract the priority from a given raw header string |
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| 365 | */ |
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| 366 | private function findPriority() { |
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| 390 | } |
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| 391 | |||
| 392 | /** |
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| 393 | * Extract a given part as address array from a given header |
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| 394 | * @param $values |
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| 395 | * |
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| 396 | * @return array |
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| 397 | */ |
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| 398 | private function decodeAddresses($values) { |
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| 417 | } |
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| 418 | |||
| 419 | /** |
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| 420 | * Extract a given part as address array from a given header |
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| 421 | * @param object $header |
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| 422 | */ |
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| 423 | private function extractAddresses($header) { |
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| 424 | foreach(['from', 'to', 'cc', 'bcc', 'reply_to', 'sender', 'in_reply_to'] as $key){ |
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| 425 | if (property_exists($header, $key)) { |
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| 426 | $this->attributes[$key] = $this->parseAddresses($header->$key); |
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| 427 | } |
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| 428 | } |
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| 429 | } |
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| 430 | |||
| 431 | /** |
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| 432 | * Parse Addresses |
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| 433 | * @param $list |
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| 434 | * |
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| 435 | * @return array |
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| 436 | */ |
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| 437 | private function parseAddresses($list) { |
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| 469 | } |
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| 470 | |||
| 471 | /** |
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| 472 | * Search and extract potential header extensions |
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| 473 | */ |
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| 474 | private function extractHeaderExtensions(){ |
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| 487 | } |
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| 488 | } |
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| 489 | } |
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| 490 | } |
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| 491 | } |
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| 492 | } |
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| 493 | |||
| 494 | /** |
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| 495 | * Exception handling for invalid dates |
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| 496 | * |
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| 497 | * Currently known invalid formats: |
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| 498 | * ^ Datetime ^ Problem ^ Cause |
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| 499 | * | Mon, 20 Nov 2017 20:31:31 +0800 (GMT+8:00) | Double timezone specification | A Windows feature |
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| 500 | * | Thu, 8 Nov 2018 08:54:58 -0200 (-02) | |
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| 501 | * | | and invalid timezone (max 6 char) | |
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| 502 | * | 04 Jan 2018 10:12:47 UT | Missing letter "C" | Unknown |
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| 503 | * | Thu, 31 May 2018 18:15:00 +0800 (added by) | Non-standard details added by the | Unknown |
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| 504 | * | | mail server | |
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| 505 | * | Sat, 31 Aug 2013 20:08:23 +0580 | Invalid timezone | PHPMailer bug https://sourceforge.net/p/phpmailer/mailman/message/6132703/ |
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| 506 | * |
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| 507 | * Please report any new invalid timestamps to [#45](https://github.com/Webklex/php-imap/issues) |
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| 508 | * |
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| 509 | * @param object $header |
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| 510 | * |
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| 511 | * @throws InvalidMessageDateException |
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| 512 | */ |
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| 513 | private function parseDate($header) { |
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| 550 | } |
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| 551 | } |
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| 552 | |||
| 553 | /** |
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| 554 | * Get all available attributes |
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| 555 | * |
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| 556 | * @return array |
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| 557 | */ |
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| 558 | public function getAttributes() { |
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| 560 | } |
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| 561 | |||
| 562 | } |
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