/**
* Returns a valid and unused vCard id
*
* @return string $vcard_id Valid vCard id
*/
private function generate_vcard_id()
{
$vcard_id = null;
for ($number = 0; $number <= 25; $number++) {
if ($number == 8 || $number == 17) {
$vcard_id .= '-';
} else {
$vcard_id .= $this->vcard_id_chars[mt_rand(0, count($this->vcard_id_chars) - 1)];
}
}
try {
$carddav = new carddav_backend($this->url);
$carddav->set_auth($this->username, $this->password);
$result = $carddav->query($this->url . $vcard_id . $this->url_vcard_extension, 'GET');
if ($result['http_code'] !== 404) {
$vcard_id = $this->generate_vcard_id();
}
return $vcard_id;
} catch (Exception $e) {
throw new Exception($e->getMessage(), self::EXCEPTION_COULD_NOT_GENERATE_NEW_VCARD_ID);
}
}
/**
* Returns a valid and unused vCard id
*
* @return string Valid vCard id
*/
private function generate_vcard_id()
{
$id = null;
for ($number = 0; $number <= 25; $number++) {
if ($number == 8 || $number == 17) {
$id .= '-';
} else {
$id .= $this->vcard_id_chars[mt_rand(0, count($this->vcard_id_chars) - 1)];
}
}
$this->current_id = $id;
$carddav = new carddav_backend($this->url);
$carddav->set_auth($this->username, $this->password);
if ($carddav->query($this->url . $id . $this->ext, 'GET', null, null, true)) {
return $this->generate_vcard_id();
} else {
return $id;
}
}
