50 lines
1.8 KiB
PHP
Executable File
50 lines
1.8 KiB
PHP
Executable File
<?php
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header('Access-Control-Allow-Origin:*');
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function gmt_iso8601($time) {
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$dtStr = date("c", $time);
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$mydatetime = new DateTime($dtStr);
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$expiration = $mydatetime->format(DateTime::ISO8601);
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$pos = strpos($expiration, '+');
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$expiration = substr($expiration, 0, $pos);
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return $expiration."Z";
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}
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$id= 'LTAIfppBmzIHRPV0';
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$key= 'OdsoQBa30zzPC38Jq9EmefbqSgFZnX';
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$host = 'http://qlgmall.oss-cn-hongkong.aliyuncs.com';
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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 = gmt_iso8601($end);
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$save_dir = $_GET['dir'];
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$dir = 'upload/'.$save_dir."/".date('Y-m').'/';
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//最大文件大小.用户可以自己设置
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$condition = array(0=>'content-length-range', 1=>0, 2=>1048576000);
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$conditions[] = $condition;
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//表示用户上传的数据,必须是以$dir开始, 不然上传会失败,这一步不是必须项,只是为了安全起见,防止用户通过policy上传到别人的目录
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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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//echo json_encode($arr);
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//return;
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$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, $key, true));
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$response = array();
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$response['accessid'] = $id;
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$response['host'] = $host;
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$response['policy'] = $base64_policy;
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$response['signature'] = $signature;
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$response['expire'] = $end;
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//这个参数是设置用户上传指定的前缀
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$response['dir'] = $dir;
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echo json_encode($response);
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?>
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