/**
* Returns pseudo random block
*
* @return string
*/
protected function getPseudoRandomBlock()
{
global $APPLICATION;
if (function_exists('openssl_random_pseudo_bytes')) {
$bytes = openssl_random_pseudo_bytes(64);
if ($bytes && String::getBinaryLength($bytes) >= 64) {
return String::getBinarySubstring($bytes, 0, 64);
}
}
$bytes = '';
for ($i = 0; $i < 64; $i++) {
$bytes .= pack('S', mt_rand(0, 0xffff));
}
$bytes .= $APPLICATION->getServerUniqID();
return hash('sha512', $bytes, true);
}
/**
* Returns pseudo random block
*
* @return string
*/
protected function getPseudoRandomBlock()
{
global $APPLICATION;
if (static::isOpensslSkipped()) {
$bytes = openssl_random_pseudo_bytes(static::RANDOM_BLOCK_LENGTH);
if ($bytes && String::getBinaryLength($bytes) >= static::RANDOM_BLOCK_LENGTH) {
return String::getBinarySubstring($bytes, 0, static::RANDOM_BLOCK_LENGTH);
}
}
$bytes = '';
for ($i = 0; $i < static::RANDOM_BLOCK_LENGTH; $i++) {
$bytes .= pack('S', mt_rand(0, 0xffff));
}
$bytes .= $APPLICATION->getServerUniqID();
return hash('sha512', $bytes, true);
}
protected function decompress()
{
if (is_resource($this->outputStream)) {
$compressed = stream_get_contents($this->outputStream, -1, 10);
$compressed = String::getBinarySubstring($compressed, 0, -8);
if ($compressed != '') {
$uncompressed = gzinflate($compressed);
rewind($this->outputStream);
$len = fwrite($this->outputStream, $uncompressed);
ftruncate($this->outputStream, $len);
}
} else {
$compressed = String::getBinarySubstring($this->result, 10, -8);
if ($compressed != '') {
$this->result = gzinflate($compressed);
}
}
}
/**
* Returns array of file data
* @param $content
* @return array
*/
private static function getFilesInfo($content)
{
$offset = 0;
$line = 0;
$arResult = array();
while (($newLinePos = String::getBinaryStrpos($content, "\n", $offset)) !== false) {
$line++;
$offset = $newLinePos + 1;
if (String::getBinarySubstring($content, $offset, strlen(self::HEADER_START_TAG)) === self::HEADER_START_TAG) {
$endingPos = String::getBinaryStrpos($content, self::HEADER_END_TAG, $offset);
if ($endingPos === false) {
break;
}
$startData = $offset + strlen(self::HEADER_START_TAG);
$data = unserialize(String::getBinarySubstring($content, $startData, $endingPos - $startData));
if (is_array($data)) {
$data["line"] = $line + 1;
$arResult[] = $data;
}
$offset = $endingPos;
}
}
return $arResult;
}
/**
* @param string $iblockType This variable is the id iblockType.
* @param string $datum This variable is the encrypted string.
* @param null $siteId This variable is the id current site.
* @throws Main\ArgumentNullException
*/
public static function import($iblockType, $datum, $siteId = null)
{
if (empty($datum)) {
throw new Main\ArgumentNullException("datum");
}
if (substr($datum, 0, 10) === "compressed") {
$datum = gzuncompress(Main\Text\String::getBinarySubstring($datum, 10));
}
$len = intval(Main\Text\String::getBinarySubstring($datum, 0, 10));
$iblockSerialized = Main\Text\String::getBinarySubstring($datum, 10, $len);
$datum = Main\Text\String::getBinarySubstring($datum, $len + 10);
$marker = Main\Text\String::getBinarySubstring($datum, 0, 1);
$picture = null;
$pictureType = null;
if ($marker == "P") {
$len = intval(Main\Text\String::getBinarySubstring($datum, 1, 10));
$pictureType = Main\Text\String::getBinarySubstring($datum, 11, $len);
$datum = Main\Text\String::getBinarySubstring($datum, $len + 11);
$len = intval(Main\Text\String::getBinarySubstring($datum, 0, 10));
$picture = Main\Text\String::getBinarySubstring($datum, 10, $len);
$datum = Main\Text\String::getBinarySubstring($datum, $len + 10);
$marker = Main\Text\String::getBinarySubstring($datum, 0, 1);
}
$iblock = CheckSerializedData($iblockSerialized) ? unserialize($iblockSerialized) : array();
$iblock = Main\Text\Encoding::convertEncodingArray($iblock, "UTF-8", LANG_CHARSET);
$iblockId = static::createIBlock($iblockType, $iblock, $pictureType, $picture, $siteId);
if ($iblockId > 0) {
$documentType = self::getDocumentType($iblockType, $iblockId);
while (!empty($datum)) {
if ($marker == "B") {
$len = intval(Main\Text\String::getBinarySubstring($datum, 1, 10));
$bpDescr = Main\Text\String::getBinarySubstring($datum, 11, $len);
$datum = Main\Text\String::getBinarySubstring($datum, $len + 11);
$bpDescr = CheckSerializedData($bpDescr) ? unserialize($bpDescr) : array();
$bpDescr = Main\Text\Encoding::convertEncodingArray($bpDescr, "UTF-8", LANG_CHARSET);
$len = intval(Main\Text\String::getBinarySubstring($datum, 0, 10));
$bp = Main\Text\String::getBinarySubstring($datum, 10, $len);
$datum = Main\Text\String::getBinarySubstring($datum, $len + 10);
static::importTemplate($documentType, $bpDescr, $bp);
} else {
}
if (empty($datum)) {
break;
}
$marker = Main\Text\String::getBinarySubstring($datum, 0, 1);
}
}
}