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authorFrédéric Guillot <fred@kanboard.net>2014-08-15 17:23:41 -0700
committerFrédéric Guillot <fred@kanboard.net>2014-08-15 17:23:41 -0700
commit9eeded33f68872515954a2fc177fcb47a9273ae9 (patch)
treef3ef9507e087ca6bf3ce624232da240a8689b051 /vendor/swiftmailer/classes/Swift/Mime/Grammar.php
parentc539bdc8ab746c5afd48cf87de057dc38d50adac (diff)
Add email notifications
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+<?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];
+ } else {
+ 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;
+ }
+}