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462 lines
13 KiB
462 lines
13 KiB
<?php
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/**
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* Class OssUtil
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*
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* Oss Util class for OssClient. The caller could use it for formating the result from OssClient.
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*
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* @package OSS
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*/
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class OssUtil
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{
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const OSS_CONTENT = 'content';
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const OSS_LENGTH = 'length';
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const OSS_HEADERS = 'headers';
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const OSS_MAX_OBJECT_GROUP_VALUE = 1000;
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const OSS_MAX_PART_SIZE = 5368709120; // 5GB
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const OSS_MID_PART_SIZE = 10485760; // 10MB
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const OSS_MIN_PART_SIZE = 102400; // 100KB
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/**
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* Generate query params
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*
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* @param array $options: a key-value pair array.
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* @return string: the key-value list in the format such as key1=value1&key2=value2
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*/
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public static function toQueryString($options = array())
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{
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$temp = array();
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uksort($options, 'strnatcasecmp');
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foreach ($options as $key => $value) {
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if (is_string($key) && !is_array($value)) {
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$temp[] = rawurlencode($key) . '=' . rawurlencode($value);
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}
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}
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return implode('&', $temp);
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}
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/**
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* Html encoding '<', '>', '&', '\', '"' in subject parameter.
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*
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* @param string $subject
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* @return string
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*/
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public static function sReplace($subject)
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{
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$search = array('<', '>', '&', '\'', '"');
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$replace = array('<', '>', '&', ''', '"');
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return str_replace($search, $replace, $subject);
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}
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/**
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* Check whether the string includes any chinese character
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*
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* @param $str
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* @return int
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*/
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public static function chkChinese($str)
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{
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return preg_match('/[\x80-\xff]./', $str);
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}
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/**
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* Checks if the string is encoded by GB2312.
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*
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* @param string $str
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* @return boolean false UTF-8 encoding TRUE GB2312 encoding
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*/
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public static function isGb2312($str)
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{
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for ($i = 0; $i < strlen($str); $i++) {
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$v = ord($str[$i]);
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if ($v > 127) {
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if (($v >= 228) && ($v <= 233)) {
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if (($i + 2) >= (strlen($str) - 1)) return true; // not enough characters
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$v1 = ord($str[$i + 1]);
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$v2 = ord($str[$i + 2]);
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if (($v1 >= 128) && ($v1 <= 191) && ($v2 >= 128) && ($v2 <= 191))
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return false;
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else
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return true;
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}
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}
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}
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return false;
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}
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/**
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* Checks if the string is encoded by GBK
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*
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* @param string $str
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* @param boolean $gbk
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* @return boolean
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*/
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public static function checkChar($str, $gbk = true)
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{
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for ($i = 0; $i < strlen($str); $i++) {
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$v = ord($str[$i]);
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if ($v > 127) {
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if (($v >= 228) && ($v <= 233)) {
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if (($i + 2) >= (strlen($str) - 1)) return $gbk ? true : FALSE; // not enough characters
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$v1 = ord($str[$i + 1]);
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$v2 = ord($str[$i + 2]);
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if ($gbk) {
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return (($v1 >= 128) && ($v1 <= 191) && ($v2 >= 128) && ($v2 <= 191)) ? FALSE : TRUE;//GBK
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} else {
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return (($v1 >= 128) && ($v1 <= 191) && ($v2 >= 128) && ($v2 <= 191)) ? TRUE : FALSE;
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}
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}
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}
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}
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return $gbk ? TRUE : FALSE;
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}
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/**
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* Checks if the bucket name is valid
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* bucket naming rules
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* 1. Can only include lowercase letters, numbers, or dashes
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* 2. Must start and end with lowercase letters or numbers
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* 3. Must be within a length from 3 to 63 bytes.
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*
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* @param string $bucket Bucket name
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* @return boolean
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*/
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public static function validateBucket($bucket)
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{
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$pattern = '/^[a-z0-9][a-z0-9-]{2,62}$/';
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if (!preg_match($pattern, $bucket)) {
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return false;
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}
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return true;
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}
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/**
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* Checks if object name is valid
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* object naming rules:
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* 1. Must be within a length from 1 to 1023 bytes
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* 2. Cannot start with '/' or '\\'.
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* 3. Must be encoded in UTF-8.
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*
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* @param string $object Object名称
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* @return boolean
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*/
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public static function validateObject($object)
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{
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$pattern = '/^.{1,1023}$/';
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if (empty($object) || !preg_match($pattern, $object) ||
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self::startsWith($object, '/') || self::startsWith($object, '\\')
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) {
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return false;
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}
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return true;
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}
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/**
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* Checks if $str starts with $findMe
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*
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* @param string $str
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* @param string $findMe
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* @return bool
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*/
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public static function startsWith($str, $findMe)
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{
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if (strpos($str, $findMe) === 0) {
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return true;
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} else {
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return false;
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}
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}
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/**
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* Generate the xml message of createBucketXmlBody.
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*
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* @param string $storageClass
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* @return string
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*/
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public static function createBucketXmlBody($storageClass)
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{
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$xml = new \SimpleXMLElement('<?xml version="1.0" encoding="UTF-8"?><CreateBucketConfiguration></CreateBucketConfiguration>');
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$xml->addChild('StorageClass', $storageClass);
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return $xml->asXML();
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}
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/**
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* validate $options
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*
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* @param array $options
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* @throws OssException
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* @return boolean
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*/
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public static function validateOptions($options)
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{
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//$options
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if ($options != NULL && !is_array($options)) {
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throw new OssException ($options . ':' . 'option must be array');
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}
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}
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/**
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* check whether the Content is valid.
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*
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* @param $content string
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* @throws OssException
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*/
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public static function validateContent($content)
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{
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if (empty($content)) {
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throw new OssException("http body content is invalid");
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}
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}
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/**
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* Check if BUCKET/OBJECT/OBJECT GROUP is empty.
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*
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* @param string $name
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* @param string $errMsg
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* @throws OssException
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* @return void
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*/
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public static function throwOssExceptionWithMessageIfEmpty($name, $errMsg)
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{
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if (empty($name)) {
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throw new OssException($errMsg);
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}
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}
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/**
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* This is a method for test only. DO NOT USE.
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*
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* @param $filename
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* @param $size
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*/
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public static function generateFile($filename, $size)
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{
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if (file_exists($filename) && $size == filesize($filename)) {
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echo $filename . " already exists, no need to create again. ";
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return;
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}
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$part_size = 1 * 1024 * 1024;
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$fp = fopen($filename, "w");
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$characters = <<<BBB
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0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
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BBB;
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$charactersLength = strlen($characters);
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if ($fp) {
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while ($size > 0) {
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if ($size < $part_size) {
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$write_size = $size;
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} else {
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$write_size = $part_size;
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}
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$size -= $write_size;
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$a = $characters[rand(0, $charactersLength - 1)];
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$content = str_repeat($a, $write_size);
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$flag = fwrite($fp, $content);
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if (!$flag) {
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echo "write to " . $filename . " failed. <br>";
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break;
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}
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}
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} else {
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echo "open " . $filename . " failed. <br>";
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}
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fclose($fp);
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}
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/**
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* Get MD5 of the file.
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*
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* @param $filename
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* @param $from_pos
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* @param $to_pos
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* @return string
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*/
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public static function getMd5SumForFile($filename, $from_pos, $to_pos)
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{
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$content_md5 = "";
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if (($to_pos - $from_pos) > self::OSS_MAX_PART_SIZE) {
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return $content_md5;
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}
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$filesize = filesize($filename);
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if ($from_pos >= $filesize || $to_pos >= $filesize || $from_pos < 0 || $to_pos < 0) {
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return $content_md5;
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}
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$total_length = $to_pos - $from_pos + 1;
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$buffer = 8192;
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$left_length = $total_length;
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if (!file_exists($filename)) {
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return $content_md5;
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}
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if (false === $fh = fopen($filename, 'rb')) {
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return $content_md5;
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}
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fseek($fh, $from_pos);
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$data = '';
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while (!feof($fh)) {
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if ($left_length >= $buffer) {
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$read_length = $buffer;
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} else {
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$read_length = $left_length;
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}
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if ($read_length <= 0) {
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break;
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} else {
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$data .= fread($fh, $read_length);
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$left_length = $left_length - $read_length;
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}
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}
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fclose($fh);
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$content_md5 = base64_encode(md5($data, true));
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return $content_md5;
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}
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/**
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* Check if the OS is Windows. The default encoding in Windows is GBK.
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*
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* @return bool
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*/
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public static function isWin()
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{
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return strtoupper(substr(PHP_OS, 0, 3)) == "WIN";
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}
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/**
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* Encodes the file path from GBK to UTF-8.
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* The default encoding in Windows is GBK.
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* And if the file path is in Chinese, the file would not be found without the transcoding to UTF-8.
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*
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* @param $file_path
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* @return string
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*/
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public static function encodePath($file_path)
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{
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if (self::chkChinese($file_path) && self::isWin()) {
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$file_path = iconv('utf-8', 'gbk', $file_path);
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}
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return $file_path;
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}
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/**
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* Check if the endpoint is in the IPv4 format, such as xxx.xxx.xxx.xxx:port or xxx.xxx.xxx.xxx.
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*
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* @param string $endpoint The endpoint to check.
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* @return boolean
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*/
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public static function isIPFormat($endpoint)
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{
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$ip_array = explode(":", $endpoint);
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$hostname = $ip_array[0];
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$ret = filter_var($hostname, FILTER_VALIDATE_IP);
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if (!$ret) {
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return false;
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} else {
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return true;
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}
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}
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/**
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* Generate the xml message of DeleteMultiObjects.
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*
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* @param string[] $objects
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* @param bool $quiet
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* @return string
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*/
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public static function createDeleteObjectsXmlBody($objects, $quiet)
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{
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$xml = new \SimpleXMLElement('<?xml version="1.0" encoding="utf-8"?><Delete></Delete>');
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$xml->addChild('Quiet', $quiet);
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foreach ($objects as $object) {
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$sub_object = $xml->addChild('Object');
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$object = OssUtil::sReplace($object);
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$sub_object->addChild('Key', $object);
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}
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return $xml->asXML();
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}
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/**
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* Generate the xml message of CompleteMultipartUpload.
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*
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* @param array[] $listParts
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* @return string
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*/
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public static function createCompleteMultipartUploadXmlBody($listParts)
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{
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$xml = new \SimpleXMLElement('<?xml version="1.0" encoding="utf-8"?><CompleteMultipartUpload></CompleteMultipartUpload>');
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foreach ($listParts as $node) {
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$part = $xml->addChild('Part');
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$part->addChild('PartNumber', $node['PartNumber']);
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$part->addChild('ETag', $node['ETag']);
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}
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return $xml->asXML();
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}
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/**
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* Read the directory, return a associative array in which the MD5 is the named key and the <path,filanme> is the value.
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*
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* @param string $dir
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* @param string $exclude
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* @param bool $recursive
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* @return string[]
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*/
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public static function readDir($dir, $exclude = ".|..|.svn|.git", $recursive = false)
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{
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$file_list_array = array();
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$base_path = $dir;
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$exclude_array = explode("|", $exclude);
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$exclude_array = array_unique(array_merge($exclude_array, array('.', '..')));
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if ($recursive) {
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foreach (new \RecursiveIteratorIterator(new \RecursiveDirectoryIterator($dir)) as $new_file) {
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if ($new_file->isDir()) continue;
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$object = str_replace($base_path, '', $new_file);
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if (!in_array(strtolower($object), $exclude_array)) {
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$object = ltrim($object, '/');
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if (is_file($new_file)) {
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$key = md5($new_file . $object, false);
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$file_list_array[$key] = array('path' => $new_file, 'file' => $object,);
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}
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}
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}
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} else if ($handle = opendir($dir)) {
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while (false !== ($file = readdir($handle))) {
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if (!in_array(strtolower($file), $exclude_array)) {
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$new_file = $dir . '/' . $file;
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$object = $file;
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$object = ltrim($object, '/');
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if (is_file($new_file)) {
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$key = md5($new_file . $object, false);
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$file_list_array[$key] = array('path' => $new_file, 'file' => $object,);
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}
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}
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}
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closedir($handle);
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}
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return $file_list_array;
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}
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/**
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* Decode key based on the encoding type
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*
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* @param string $key
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* @param string $encoding
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* @return string
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*/
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public static function decodeKey($key, $encoding)
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{
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if ($encoding == "") {
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return $key;
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}
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if ($encoding == "url") {
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return rawurldecode($key);
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} else {
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throw new OssException("Unrecognized encoding type: " . $encoding);
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}
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}
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}
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