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valid_email :: check if domain part is real

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this can be used as an intermediate 'patch' util there is a validation
system in place.

the extra check is to verify that the domain part of a correctly
formatted email address is existing and in use. this will not at all
stop spammers since they can use bogus emails with valid domain parts

Lukas: Minor formatting changes.

Signed-off-by: Lukas Fleischer <archlinux@cryptocrack.de>
This commit is contained in:
BlackEagle 2012-03-21 08:42:54 +01:00 • committed by Lukas Fleischer
parent 1f36664e9f
commit 0a1e1729d9
1 changed files with 12 additions and 1 deletions
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13
web/lib/aur.inc.php
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@ -80,7 +80,18 @@ function check_sid($dbh=NULL) {
# verify that an email address looks like it is legitimate
#
function valid_email($addy) {
return (filter_var($addy, FILTER_VALIDATE_EMAIL) !== false);
// check against RFC 3696
if (filter_var($addy, FILTER_VALIDATE_EMAIL) === false) {
return false;
}
// check dns for mx, a, aaaa records
list($local, $domain) = explode('@', $addy);
if (!(checkdnsrr($domain, 'MX') || checkdnsrr($domain, 'A') || checkdnsrr($domain, 'AAAA'))) {
return false;
}
return true;
}
# a new seed value for mt_srand()