/**
* Listens to requests to check the IMAP inbox.
*
* If a POST request is made to check the IMAP inbox, RBE will actually
* process this request in this function. We also make sure that WP-cron is
* running before pinging the IMAP inbox.
*
* @since 1.0-RC3
*
* @see bp_rbe_spawn_inbox_check()
*/
function bp_rbe_run_inbox_listener()
{
if (empty($_POST['_bp_rbe_check'])) {
return;
}
// make sure WP-cron isn't running
if (defined('DOING_CRON') || isset($_GET['doing_wp_cron'])) {
return;
}
if (bp_rbe_is_connecting(array('clearcache' => true))) {
return;
}
if (bp_rbe_is_connected()) {
return;
}
bp_rbe_add_imap_lock();
// run our inbox check
$imap = BP_Reply_By_Email_IMAP::init();
$imap = $imap->run();
// Do not run the inbox check again on failure.
if (false === $imap) {
remove_action('shutdown', 'bp_rbe_spawn_inbox_check');
}
// kill the rest of this page
die;
}
/**
* Parses the body of an email message.
*
* Tries to fetch the plain-text version when available first. Otherwise, will
* fallback to the HTML version.
*
* @uses imap_fetchstructure() Get the structure of an email
* @uses imap_fetchbody() Using the third parameter will return a portion of the email depending on the email structure.
* @param resource $imap The current IMAP connection
* @param int $i The current email message number
* @param bool $reply If we're parsing a reply or not. Default set to true.
* @return mixed Either the email body on success or false on failure
*/
public static function body_parser($imap, $i, $reply = true)
{
// get the email structure
$structure = imap_fetchstructure($imap, $i);
// setup encoding variable
$encoding = $structure->encoding;
// this is a multipart email
if (!empty($structure->parts)) {
// parse the parts!
$data = self::multipart_plain_text_parser($structure->parts, $imap, $i);
// we successfully parsed something from the multipart email
if (!empty($data)) {
// $data when extracted includes:
// $body
// $encoding
// $params (if applicable)
extract($data);
unset($data);
}
// either a plain-text email or a HTML email
} else {
$body = imap_body($imap, $i);
}
// decode emails with the following encoding
switch ($encoding) {
// quoted-printable
case 4:
$body = quoted_printable_decode($body);
break;
// base64
// base64
case 3:
$body = base64_decode($body);
break;
}
// convert email to UTF-8 if not UTF-8
if (!empty($params['charset']) && $params['charset'] != 'utf-8') {
// try to use mb_convert_encoding() first if it exists
// there are differing opinions as to whether iconv() is better than
// mb_convert_encoding()
// mb_convert_encoding() appears to have less problems than iconv()
// so this is used first
if (function_exists('mb_convert_encoding')) {
$body = mb_convert_encoding($body, 'utf-8', $params['charset']);
// fallback to iconv() if mb_convert_encoding()_doesn't exist
} elseif (function_exists('iconv')) {
$body = iconv($params['charset'], 'utf-8//TRANSLIT', $body);
}
}
// do something special for emails that only contain HTML
if (strtolower($structure->subtype) == 'html') {
self::$html = true;
}
return $body;
}