Signed-off-by: BlackEagle <ike.devolder@gmail.com> --- web/lib/aur.inc.php | 48 +++++++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 47 insertions(+), 1 deletion(-) diff --git a/web/lib/aur.inc.php b/web/lib/aur.inc.php index c662b80..9b604fe 100644 --- a/web/lib/aur.inc.php +++ b/web/lib/aur.inc.php @@ -80,7 +80,53 @@ function check_sid($dbh=NULL) { # verify that an email address looks like it is legitimate # function valid_email($addy) { - return (filter_var($addy, FILTER_VALIDATE_EMAIL) !== false); + $isValid = true; + $atIndex = strrpos($addy, "@"); + if (is_bool($atIndex) && !$atIndex) { + $isValid = false; + } else { + $domain = substr($addy, $atIndex+1); + $local = substr($addy, 0, $atIndex); + $localLen = strlen($local); + $domainLen = strlen($domain); + if ($localLen < 1 || $localLen > 64) { + // local part length exceeded + $isValid = false; + } elseif ($domainLen < 1 || $domainLen > 255) { + // domain part length exceeded + $isValid = false; + } elseif ($local[0] == '.' || $local[$localLen-1] == '.') { + // local part starts or ends with '.' + $isValid = false; + } elseif (preg_match('/\\.\\./', $local)) { + // local part has two consecutive dots + $isValid = false; + } elseif (!preg_match('/^[A-Za-z0-9\\-\\.]+$/', $domain)) { + // character not valid in domain part + $isValid = false; + } elseif (preg_match('/\\.\\./', $domain)) { + // domain part has two consecutive dots + $isValid = false; + } elseif ( + !preg_match('/^(\\\\.|[A-Za-z0-9!#%&`_=\\/$\'*+?^{}|~.-])+$/', + str_replace("\\\\","",$local)) + ) { + // character not valid in local part unless + // local part is quoted + if ( + !preg_match('/^"(\\\\"|[^"])+"$/', + str_replace("\\\\","",$local)) + ) { + $isValid = false; + } + } + + if ($isValid && !(checkdnsrr($domain,"MX") || checkdnsrr($domain,"A"))) { + // domain not found in DNS + $isValid = false; + } + } + return $isValid; } # a new seed value for mt_srand() -- 1.7.9.4