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authorsembrestels <sembrestels@riseup.net>2011-10-13 15:23:11 +0200
committersembrestels <sembrestels@riseup.net>2011-10-13 15:23:11 +0200
commit74bd6999c5e5c23ebbf90dbb6bdaabbddd7594cf (patch)
tree834c120d692be288f261bcae169eedd3d6b31d74 /vendors/dokuwiki/inc/EmailAddressValidator.php
parentf8be8643f0faadb2c0ce87d553b7b9d569af5afd (diff)
downloadelgg-74bd6999c5e5c23ebbf90dbb6bdaabbddd7594cf.tar.gz
elgg-74bd6999c5e5c23ebbf90dbb6bdaabbddd7594cf.tar.bz2
Rename lib/dokuwiki to vendors/dokuwiki
Diffstat (limited to 'vendors/dokuwiki/inc/EmailAddressValidator.php')
-rw-r--r--vendors/dokuwiki/inc/EmailAddressValidator.php146
1 files changed, 146 insertions, 0 deletions
diff --git a/vendors/dokuwiki/inc/EmailAddressValidator.php b/vendors/dokuwiki/inc/EmailAddressValidator.php
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+++ b/vendors/dokuwiki/inc/EmailAddressValidator.php
@@ -0,0 +1,146 @@
+<?php
+/**
+ * EmailAddressValidator Class
+ *
+ * @author Dave Child <dave@addedbytes.com>
+ * @link http://code.google.com/p/php-email-address-validation/
+ * @license http://www.opensource.org/licenses/bsd-license.php
+ */
+class EmailAddressValidator {
+
+ /**
+ * Check email address validity
+ * @param strEmailAddress Email address to be checked
+ * @return True if email is valid, false if not
+ */
+ function check_email_address($strEmailAddress) {
+
+ // Control characters are not allowed
+ if (preg_match('/[\x00-\x1F\x7F-\xFF]/', $strEmailAddress)) {
+ return false;
+ }
+
+ // Split it into sections using last instance of "@"
+ $intAtSymbol = strrpos($strEmailAddress, '@');
+ if ($intAtSymbol === false) {
+ // No "@" symbol in email.
+ return false;
+ }
+ $arrEmailAddress[0] = substr($strEmailAddress, 0, $intAtSymbol);
+ $arrEmailAddress[1] = substr($strEmailAddress, $intAtSymbol + 1);
+
+ // Count the "@" symbols. Only one is allowed, except where
+ // contained in quote marks in the local part. Quickest way to
+ // check this is to remove anything in quotes.
+ $arrTempAddress[0] = preg_replace('/"[^"]+"/'
+ ,''
+ ,$arrEmailAddress[0]);
+ $arrTempAddress[1] = $arrEmailAddress[1];
+ $strTempAddress = $arrTempAddress[0] . $arrTempAddress[1];
+ // Then check - should be no "@" symbols.
+ if (strrpos($strTempAddress, '@') !== false) {
+ // "@" symbol found
+ return false;
+ }
+
+ // Check local portion
+ if (!$this->check_local_portion($arrEmailAddress[0])) {
+ return false;
+ }
+
+ // Check domain portion
+ if (!$this->check_domain_portion($arrEmailAddress[1])) {
+ return false;
+ }
+
+ // If we're still here, all checks above passed. Email is valid.
+ return true;
+
+ }
+
+ /**
+ * Checks email section before "@" symbol for validity
+ * @param strLocalPortion Text to be checked
+ * @return True if local portion is valid, false if not
+ */
+ function check_local_portion($strLocalPortion) {
+ // Local portion can only be from 1 to 64 characters, inclusive.
+ // Please note that servers are encouraged to accept longer local
+ // parts than 64 characters.
+ if (!$this->check_text_length($strLocalPortion, 1, 64)) {
+ return false;
+ }
+ // Local portion must be:
+ // 1) a dot-atom (strings separated by periods)
+ // 2) a quoted string
+ // 3) an obsolete format string (combination of the above)
+ $arrLocalPortion = explode('.', $strLocalPortion);
+ for ($i = 0, $max = sizeof($arrLocalPortion); $i < $max; $i++) {
+ if (!preg_match('.^('
+ . '([A-Za-z0-9!#$%&\'*+/=?^_`{|}~-]'
+ . '[A-Za-z0-9!#$%&\'*+/=?^_`{|}~-]{0,63})'
+ .'|'
+ . '("[^\\\"]{0,62}")'
+ .')$.'
+ ,$arrLocalPortion[$i])) {
+ return false;
+ }
+ }
+ return true;
+ }
+
+ /**
+ * Checks email section after "@" symbol for validity
+ * @param strDomainPortion Text to be checked
+ * @return True if domain portion is valid, false if not
+ */
+ function check_domain_portion($strDomainPortion) {
+ // Total domain can only be from 1 to 255 characters, inclusive
+ if (!$this->check_text_length($strDomainPortion, 1, 255)) {
+ return false;
+ }
+ // Check if domain is IP, possibly enclosed in square brackets.
+ if (preg_match('/^(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])'
+ .'(\.(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])){3}$/'
+ ,$strDomainPortion) ||
+ preg_match('/^\[(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])'
+ .'(\.(25[0-5]|2[0-4][0-9]|1[0-9][0-9]|[1-9]?[0-9])){3}\]$/'
+ ,$strDomainPortion)) {
+ return true;
+ } else {
+ $arrDomainPortion = explode('.', $strDomainPortion);
+ if (sizeof($arrDomainPortion) < 2) {
+ return false; // Not enough parts to domain
+ }
+ for ($i = 0, $max = sizeof($arrDomainPortion); $i < $max; $i++) {
+ // Each portion must be between 1 and 63 characters, inclusive
+ if (!$this->check_text_length($arrDomainPortion[$i], 1, 63)) {
+ return false;
+ }
+ if (!preg_match('/^(([A-Za-z0-9][A-Za-z0-9-]{0,61}[A-Za-z0-9])|'
+ .'([A-Za-z0-9]+))$/', $arrDomainPortion[$i])) {
+ return false;
+ }
+ }
+ }
+ return true;
+ }
+
+ /**
+ * Check given text length is between defined bounds
+ * @param strText Text to be checked
+ * @param intMinimum Minimum acceptable length
+ * @param intMaximum Maximum acceptable length
+ * @return True if string is within bounds (inclusive), false if not
+ */
+ function check_text_length($strText, $intMinimum, $intMaximum) {
+ // Minimum and maximum are both inclusive
+ $intTextLength = strlen($strText);
+ if (($intTextLength < $intMinimum) || ($intTextLength > $intMaximum)) {
+ return false;
+ } else {
+ return true;
+ }
+ }
+}
+