我正在使用以下PHP函数为私有文件临时访问公共.
function get_s3_signed_url($bucket,$resource,$AWS_S3_KEY,$AWS_s3_secret_key,$expire_seconds) {
$expires = time()+$expire_seconds;
// S3 Signed URL creation
$string_to_sign = "GET\n\n\n{$expires}\n/".str_replace(".s3.amazonAWS.com","",$bucket)."/$resource";
$signature = urlencode(base64_encode((hash_hmac("sha1",utf8_encode($string_to_sign),TRUE))));
$authentication_params = "AWSAccessKeyId=".$AWS_S3_KEY;
$authentication_params.= "&Expires={$expires}";
$authentication_params.= "&Signature={$signature}";
return $link = "http://s3.amazonAWS.com/{$bucket}/{$resource}?{$authentication_params}";
}
我想添加内容处置标题,以便在用户尝试访问此url时将文件名更改为test.mp3,默认文件名为982jdjd2p3.mp3
$privateUrl = array('privateUrl' => get_s3_signed_url('testbucket','982jdjd2p3.mp3',$my_aws_key,$my_aws_secret_key,60));
我尝试将以下代码行添加到该函数中
$file_name = 'test.mp3';
$authentication_params.= "&Content-disposition={$file_name}";
但是当我点击网址时
http://s3.amazonAWS.com/testbucket/982jdjd2p3.mp3?AWSAccessKeyId=***\u0026amp;Expires=***\u0026amp;Signature=***\u0026amp;Content-disposition=test.mp3
建议的文件名保存为982jdjd2p3.mp3
如何使用此函数覆盖s3 GET请求的内容处置标头？
也可以看看
Amazon S3 Change file download name
编辑
以下是使用此函数使用get请求重命名文件的最新尝试.
function get_s3_signed_url($bucket,$expire_seconds) {
$expires = time()+$expire_seconds;
// S3 Signed URL creation
$filename='moot.mp3';
$disposition = "response-content-disposition=" . urlencode("attachment; filename={$filename}");
$string_to_sign = "GET\n\n\n{$expires}\n/".str_replace(".s3.amazonAWS.com",$bucket)."/$resource";
$string_to_sign .= "?{$disposition}";
$signature = urlencode(base64_encode((hash_hmac("sha1",TRUE))));
$authentication_params = "AWSAccessKeyId=".$AWS_S3_KEY;
$authentication_params.= "&Expires={$expires}";
$authentication_params.= "&Signature={$signature}";
$authentication_params.= "&{$disposition}";
return $link = "http://s3.amazonAWS.com/{$bucket}/{$resource}?{$authentication_params}";
}
您的函数的问题是标题值应该在最终超链接中编码,但不能用于签名.以下功能纠正了：
function get_s3_signed_url($bucket,$expire_seconds,$save_as)
{
$expires = time()+$expire_seconds;
// S3 Signed URL creation
$headers = array(
'response-content-disposition' => 'attachment; filename=' . $save_as,);
$resource = str_replace(array('%2F','%2B'),array('/','+'),rawurlencode($resource));
$string_to_sign = "GET\n\n\n$expires\n/$bucket/$resource";
$final_url = "http://s3.amazonaws.com/$bucket/$resource?";
$append_char = '?';
foreach ($headers as $header => $value) {
$final_url .= $header . '=' . urlencode($value) . '&';
$string_to_sign .= $append_char . $header . '=' . $value;
$append_char = '&';
}
$signature = urlencode(base64_encode(hash_hmac('sha1',$string_to_sign,true)));
return $final_url . "AWSAccessKeyId=$AWS_S3_KEY&Expires=$expires&Signature=$signature";
}