/**
* @return bool|wfWAFLexerToken
* @throws wfWAFParserSyntaxError
*/
public function nextToken()
{
if (!$this->scanner->eos()) {
/** @var wfWAFLexerTokenMatcher $tokenMatcher */
foreach ($this->tokenMatchers as $tokenMatcher) {
$this->scanner->skip('/^\\s+/s');
if ($this->scanner->eos()) {
return false;
}
if (($this->flags & self::FLAG_TOKENIZE_MYSQL_PORTABLE_COMMENTS) === 0 && ($tokenMatcher->getTokenID() === self::MYSQL_PORTABLE_COMMENT_START || $tokenMatcher->getTokenID() === self::MYSQL_PORTABLE_COMMENT_END)) {
continue;
}
if (!$this->hasPortableCommentStart && $tokenMatcher->getTokenID() === self::MYSQL_PORTABLE_COMMENT_END) {
continue;
}
if ($tokenMatcher->useMaximalMunch() && ($match = $this->scanner->check($tokenMatcher->getMatch())) !== null) {
$biggestToken = $this->createToken($tokenMatcher->getTokenID(), $match);
/** @var wfWAFLexerTokenMatcher $tokenMatcher2 */
foreach ($this->tokenMatchers as $tokenMatcher2) {
if ($tokenMatcher === $tokenMatcher2) {
continue;
}
if (($match2 = $this->scanner->check($tokenMatcher2->getMatch())) !== null) {
$biggestToken2 = $this->createToken($tokenMatcher2->getTokenID(), $match2);
if (wfWAFUtils::strlen($biggestToken2->getValue()) > wfWAFUtils::strlen($biggestToken->getValue())) {
$biggestToken = $biggestToken2;
}
}
}
$this->scanner->advancePointer(wfWAFUtils::strlen($biggestToken->getValue()));
return $biggestToken;
} else {
if (($match = $this->scanner->scan($tokenMatcher->getMatch())) !== null) {
$token = $this->createToken($tokenMatcher->getTokenID(), $match);
if ($tokenMatcher->getTokenID() === self::MYSQL_PORTABLE_COMMENT_START) {
$this->hasPortableCommentStart = true;
} else {
if ($tokenMatcher->getTokenID() === self::MYSQL_PORTABLE_COMMENT_END) {
$this->hasPortableCommentStart = false;
}
}
return $token;
}
}
}
$char = $this->scanner->scanChar();
$e = new wfWAFParserSyntaxError(sprintf('Invalid character "%s" (\\x%02x) found on line %d, column %d', $char, ord($char), $this->scanner->getLine(), $this->scanner->getColumn()));
$e->setParseLine($this->scanner->getLine());
$e->setParseColumn($this->scanner->getColumn());
throw $e;
}
return false;
}
/**
* @param wfWAFLexerToken $token
* @param string $message
* @throws wfWAFParserSyntaxError
*/
protected function triggerSyntaxError($token, $message = 'Wordfence WAF Syntax Error: Unexpected %s %s found on line %d, column %d')
{
$e = new wfWAFParserSyntaxError(sprintf($message, $token->getType(), $token->getValue(), $token->getLine(), $token->getColumn()));
$e->setToken($token);
$e->setParseLine($token->getLine());
$e->setParseColumn($token->getColumn());
throw $e;
}
