← All changes | back/Helpers/global/email.php +95 -0 10.0.0 → 11.1.0 View file →

		@@ -1,0 +1,95 @@
	1	+<?php
	2	+defined('ABSPATH') || die('Restricted Access');
	3	+
	4	+function acym_getEmailRegex(bool $secureJS = false, bool $forceRegex = false): string
	5	+{
	6	+ $config = acym_config();
	7	+ if ($forceRegex || $config->get('special_chars', 0) != 1) {
	8	+ $regex = '[a-z0-9!#$%&\'*+\/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&\'*+\/=?^_`{|}~-]+)*\@([a-z0-9-]+\.)+[a-z0-9]{2,20}';
	9	+ } else {
	10	+ $regex = '.+\@(.+\.)+.{2,20}';
	11	+ }
	12	+
	13	+ if ($secureJS) {
	14	+ $regex = str_replace(['"', "'"], ['\"', "\'"], $regex);
	15	+ }
	16	+
	17	+ return $regex;
	18	+}
	19	+
	20	+function acym_isValidEmail($email, bool $extended = false): bool
	21	+{
	22	+ if (empty($email) || !is_string($email)) {
	23	+ return false;
	24	+ }
	25	+
	26	+ if (!preg_match('/^'.acym_getEmailRegex().'$/i', $email)) {
	27	+ return false;
	28	+ }
	29	+
	30	+ if (!$extended) {
	31	+ return true;
	32	+ }
	33	+
	34	+ //Now we do an extended verification...
	35	+
	36	+ $config = acym_config();
	37	+
	38	+ if ($config->get('email_checkdomain', false) && function_exists('getmxrr')) {
	39	+ $domain = substr($email, strrpos($email, '@') + 1);
	40	+ $mxhosts = [];
	41	+ //Check if the domain exists
	42	+ $checkDomain = getmxrr($domain, $mxhosts);
	43	+ //Sometimes the returned host is checkyouremailaddress-hostnamedoesnotexist262392208.com ... not sure why!
	44	+ //But we remove it if it's the case...
	45	+ if (!empty($mxhosts) && strpos($mxhosts[0], 'hostnamedoesnotexist')) {
	46	+ array_shift($mxhosts);
	47	+ }
	48	+ if (!$checkDomain || empty($mxhosts)) {
	49	+ //Lets check with another function in case of...
	50	+ $dns = @dns_get_record($domain, DNS_A);
	51	+ if (empty($dns)) {
	52	+ return false;
	53	+ }
	54	+
	55	+ $domainChanged = true;
	56	+ foreach ($dns as $oneRes) {
	57	+ if (strtolower($oneRes['host']) == strtolower($domain)) {
	58	+ $domainChanged = false;
	59	+ }
	60	+ }
	61	+
	62	+ if ($domainChanged) {
	63	+ return false;
	64	+ }
	65	+ }
	66	+ }
	67	+
	68	+ $ip = acym_getIP();
	69	+
	70	+ // Check IP to limit subscription to max 3 per 2 hours
	71	+ if (!empty($ip) && $config->get('email_iptimecheck', 0)) {
	72	+ $lapseTime = time() - 7200;
	73	+ $nbUsers = acym_loadResult('SELECT COUNT(*) FROM #__acym_user WHERE creation_date > '.intval($lapseTime).' AND ip = '.acym_escapeDB($ip));
	74	+ if ($nbUsers >= 3) {
	75	+ return false;
	76	+ }
	77	+ }
	78	+
	79	+ return true;
	80	+}
	81	+
	82	+function acym_isPunycode(string $email): bool
	83	+{
	84	+ return strpos($email, '@xn--') !== false;
	85	+}
	86	+
	87	+function acym_getDomain(string $email): string
	88	+{
	89	+ $aPos = strrpos($email, '@');
	90	+ if (empty($aPos)) {
	91	+ return '';
	92	+ }
	93	+
	94	+ return substr($email, $aPos + 1);
	95	+}