82 lines
2.3 KiB
PHP
82 lines
2.3 KiB
PHP
<?php
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namespace Extend\Alibaba;
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use App\Exception\BusinessException;
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use DateTime;
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use DateTimeInterface;
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use OSS\Core\OssException;
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use OSS\OssClient;
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/**
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* 阿里云oss
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*/
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class Oss
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{
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protected array $config;// 系统配置
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public function __construct()
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{
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$this->config = config("alibaba.oss");
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}
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/**
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* 创建客户端
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* @return OssClient
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*/
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public function createClient(): OssClient
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{
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try {
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return new OssClient($this->config['accessKey'], $this->config['accessKeySecret'], $this->config['endpoint']);
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} catch (OssException $e) {
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throw new BusinessException($e->getMessage());
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}
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}
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/**
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* 获取签名
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* @param string $dir 用户上传文件时指定的前缀。
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* @return array
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*/
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public function signature(string $dir): array
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{
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try {
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$now = time();
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$expire = 30; //设置该policy超时时间是10s. 即这个policy过了这个有效时间，将不能访问。
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$end = $now + $expire;
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$expiration = $this->gmt_iso8601($end);
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$start = array(0 => 'starts-with', 1 => '$key', 2 => $dir);
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$conditions[] = $start;
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$arr = array('expiration' => $expiration, 'conditions' => $conditions);
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$policy = json_encode($arr);
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$base64_policy = base64_encode($policy);
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$string_to_sign = $base64_policy;
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$signature = base64_encode(hash_hmac('sha1', $string_to_sign, $this->config['accessKeySecret'], true));
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$response = array();
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$response['accessid'] = $this->config['accessKey'];
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$response['host'] = $this->config['bucket'] . '.' . $this->config['endpoint'];
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$response['policy'] = $base64_policy;
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$response['signature'] = $signature;
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$response['expire'] = $end;
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$response['callback'] = "";
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$response['dir'] = $dir; // 这个参数是设置用户上传文件时指定的前缀。
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return $response;
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} catch (\Exception $e) {
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throw new BusinessException($e->getMessage());
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}
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}
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/**
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* @param $time
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* @return string
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* @throws \Exception
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*/
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protected function gmt_iso8601($time): string
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{
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return str_replace('+00:00', '.000Z', gmdate('c', $time));
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}
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} |