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Diffstat (limited to 'vendor/swiftmailer/swiftmailer/lib/classes/Swift/Mime/Grammar.php')
| -rw-r--r-- | vendor/swiftmailer/swiftmailer/lib/classes/Swift/Mime/Grammar.php | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Mime/Grammar.php b/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Mime/Grammar.php new file mode 100644 index 0000000..a09f338 --- /dev/null +++ b/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Mime/Grammar.php @@ -0,0 +1,176 @@ +<?php + +/* + * This file is part of SwiftMailer. + * (c) 2004-2009 Chris Corbyn + * + * For the full copyright and license information, please view the LICENSE + * file that was distributed with this source code. + */ + +/** + * Defines the grammar to use for validation, implements the RFC 2822 (and friends) ABNF grammar definitions. + * + * @author Fabien Potencier + * @author Chris Corbyn + */ +class Swift_Mime_Grammar +{ + /** + * Special characters used in the syntax which need to be escaped. + * + * @var string[] + */ + private static $_specials = array(); + + /** + * Tokens defined in RFC 2822 (and some related RFCs). + * + * @var string[] + */ + private static $_grammar = array(); + + /** + * Initialize some RFC 2822 (and friends) ABNF grammar definitions. + */ + public function __construct() + { + $this->init(); + } + + public function __wakeup() + { + $this->init(); + } + + protected function init() + { + if (count(self::$_specials) > 0) { + return; + } + + self::$_specials = array( + '(', ')', '<', '>', '[', ']', + ':', ';', '@', ',', '.', '"', + ); + + /*** Refer to RFC 2822 for ABNF grammar ***/ + + // All basic building blocks + self::$_grammar['NO-WS-CTL'] = '[\x01-\x08\x0B\x0C\x0E-\x19\x7F]'; + self::$_grammar['WSP'] = '[ \t]'; + self::$_grammar['CRLF'] = '(?:\r\n)'; + self::$_grammar['FWS'] = '(?:(?:'.self::$_grammar['WSP'].'*'. + self::$_grammar['CRLF'].')?'.self::$_grammar['WSP'].')'; + self::$_grammar['text'] = '[\x00-\x08\x0B\x0C\x0E-\x7F]'; + self::$_grammar['quoted-pair'] = '(?:\\\\'.self::$_grammar['text'].')'; + self::$_grammar['ctext'] = '(?:'.self::$_grammar['NO-WS-CTL']. + '|[\x21-\x27\x2A-\x5B\x5D-\x7E])'; + // Uses recursive PCRE (?1) -- could be a weak point?? + self::$_grammar['ccontent'] = '(?:'.self::$_grammar['ctext'].'|'. + self::$_grammar['quoted-pair'].'|(?1))'; + self::$_grammar['comment'] = '(\((?:'.self::$_grammar['FWS'].'|'. + self::$_grammar['ccontent'].')*'.self::$_grammar['FWS'].'?\))'; + self::$_grammar['CFWS'] = '(?:(?:'.self::$_grammar['FWS'].'?'. + self::$_grammar['comment'].')*(?:(?:'.self::$_grammar['FWS'].'?'. + self::$_grammar['comment'].')|'.self::$_grammar['FWS'].'))'; + self::$_grammar['qtext'] = '(?:'.self::$_grammar['NO-WS-CTL']. + '|[\x21\x23-\x5B\x5D-\x7E])'; + self::$_grammar['qcontent'] = '(?:'.self::$_grammar['qtext'].'|'. + self::$_grammar['quoted-pair'].')'; + self::$_grammar['quoted-string'] = '(?:'.self::$_grammar['CFWS'].'?"'. + '('.self::$_grammar['FWS'].'?'.self::$_grammar['qcontent'].')*'. + self::$_grammar['FWS'].'?"'.self::$_grammar['CFWS'].'?)'; + self::$_grammar['atext'] = '[a-zA-Z0-9!#\$%&\'\*\+\-\/=\?\^_`\{\}\|~]'; + self::$_grammar['atom'] = '(?:'.self::$_grammar['CFWS'].'?'. + self::$_grammar['atext'].'+'.self::$_grammar['CFWS'].'?)'; + self::$_grammar['dot-atom-text'] = '(?:'.self::$_grammar['atext'].'+'. + '(\.'.self::$_grammar['atext'].'+)*)'; + self::$_grammar['dot-atom'] = '(?:'.self::$_grammar['CFWS'].'?'. + self::$_grammar['dot-atom-text'].'+'.self::$_grammar['CFWS'].'?)'; + self::$_grammar['word'] = '(?:'.self::$_grammar['atom'].'|'. + self::$_grammar['quoted-string'].')'; + self::$_grammar['phrase'] = '(?:'.self::$_grammar['word'].'+?)'; + self::$_grammar['no-fold-quote'] = '(?:"(?:'.self::$_grammar['qtext']. + '|'.self::$_grammar['quoted-pair'].')*")'; + self::$_grammar['dtext'] = '(?:'.self::$_grammar['NO-WS-CTL']. + '|[\x21-\x5A\x5E-\x7E])'; + self::$_grammar['no-fold-literal'] = '(?:\[(?:'.self::$_grammar['dtext']. + '|'.self::$_grammar['quoted-pair'].')*\])'; + + // Message IDs + self::$_grammar['id-left'] = '(?:'.self::$_grammar['dot-atom-text'].'|'. + self::$_grammar['no-fold-quote'].')'; + self::$_grammar['id-right'] = '(?:'.self::$_grammar['dot-atom-text'].'|'. + self::$_grammar['no-fold-literal'].')'; + + // Addresses, mailboxes and paths + self::$_grammar['local-part'] = '(?:'.self::$_grammar['dot-atom'].'|'. + self::$_grammar['quoted-string'].')'; + self::$_grammar['dcontent'] = '(?:'.self::$_grammar['dtext'].'|'. + self::$_grammar['quoted-pair'].')'; + self::$_grammar['domain-literal'] = '(?:'.self::$_grammar['CFWS'].'?\[('. + self::$_grammar['FWS'].'?'.self::$_grammar['dcontent'].')*?'. + self::$_grammar['FWS'].'?\]'.self::$_grammar['CFWS'].'?)'; + self::$_grammar['domain'] = '(?:'.self::$_grammar['dot-atom'].'|'. + self::$_grammar['domain-literal'].')'; + self::$_grammar['addr-spec'] = '(?:'.self::$_grammar['local-part'].'@'. + self::$_grammar['domain'].')'; + } + + /** + * Get the grammar defined for $name token. + * + * @param string $name exactly as written in the RFC + * + * @return string + */ + public function getDefinition($name) + { + if (array_key_exists($name, self::$_grammar)) { + return self::$_grammar[$name]; + } + + throw new Swift_RfcComplianceException( + "No such grammar '".$name."' defined." + ); + } + + /** + * Returns the tokens defined in RFC 2822 (and some related RFCs). + * + * @return array + */ + public function getGrammarDefinitions() + { + return self::$_grammar; + } + + /** + * Returns the current special characters used in the syntax which need to be escaped. + * + * @return array + */ + public function getSpecials() + { + return self::$_specials; + } + + /** + * Escape special characters in a string (convert to quoted-pairs). + * + * @param string $token + * @param string[] $include additional chars to escape + * @param string[] $exclude chars from escaping + * + * @return string + */ + public function escapeSpecials($token, $include = array(), $exclude = array()) + { + foreach (array_merge(array('\\'), array_diff(self::$_specials, $exclude), $include) as $char) { + $token = str_replace($char, '\\'.$char, $token); + } + + return $token; + } +} |