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上传文件到七牛时，bad token了怎么处理？

想用七牛实现个离线下载的功能。然后把里面的一些加密算法的函数提了出来。
这个是shell脚本运行的，提示bad token了，不知道我下面的脚本哪里写错了？
谢谢～

php download.php https://p.ssl.qhimg.com/t01d1f1a2ae31e3c3e4.png 111.png

download.php，获取encodeURI、encodedEntryURI和accessToken；

<?php
function urlsafe_base64_encode($data) {
    $find = array('+', '/');
    $replace = array('-', '_');
    return str_replace($find, $replace, base64_encode($data));
}

function hmac_sha1($str, $key) {
    return hash_hmac("sha1", $str, $key, true);
}

define("AccessKey", "AccessKey11111");
define("SecretKey", "SecretKey22222");

$url = $argv[1];  //第二个参数是url
$encodeURI = urlsafe_base64_encode($url);
//var_dump(base64_encode($url));
echo "url:{$url}, \r\nencodeURI:\r\n{$encodeURI}\r\n\r\n";

$entry = isset($argv[2]) ? 'optest:'.$argv[2] : "optest";
//$entry = "optest"; //buticket
$encodedEntryURI = urlsafe_base64_encode($entry);
echo "entry:{$entry}, \r\nencodedEntryURI:\r\n{$encodedEntryURI}\r\n\r\n";

$parse = parse_url($url);
$path = $parse['path'];
$query = @$parse['query'];
//$signingStr = "<path>?<query>\n"
$signingStr = "{$path}?{$query}\n<body>";
$sign = hmac_sha1($signingStr, SecretKey);
$encodedSign = urlsafe_base64_encode($sign);
//$encodeAccessKey = urlsafe_base64_encode(AccessKey);
//$accessToken = "{$encodeAccessKey}:{$encodedSign}";
$accessToken = AccessKey.":{$encodedSign}";
echo "AccessToken:\r\n{$accessToken}\r\n\r\n";

$data['scope'] = BUCKET;
$data['deadline'] = time()+3600;//过期时间

$encoded = urlsafe_base64_encode(json_encode($data));
//$signature=hash_hmac('sha1',$encoded,'KEY',true);
$signature = hmac_sha1($encoded, SecretKey);
$encode_signed = urlsafe_base64_encode($signature);
//$UploadToken=$encode_signed.':'.$encoded; 
$UploadToken = AccessKey.":".$encode_signed.":".$encoded;
echo "AccessToken:\r\n{$UploadToken}\r\n\r\n";

echo "UploadURL:\r\nhttp://iovip.qbox.me/fetch/{$encodeURI}/to/{$encodedEntryURI}\r\n\r\n";

再通过脚本

sh download.sh encodeURI encodedEntryURI accessToken

传输数据，结果。。。提示：

{"error":"bad token"}

download.sh

curl -i \
     -o - \
     -H 'Content-Type: application/x-www-form-urlencoded' \
     -H "Authorization: QBox $3" \
     -X POST \
     "http://iovip.qbox.me/fetch/$1/to/$2"

已经自行处理完成，最终 PHP 部分（有两处错误）：

PS：我发现我提问到最后，基本都是靠自己搞定的啊。不知道是不是大牛不屑这些技术含量低的问题还是？？？
真的和 sg 没法比啊。。。

<?php
function urlsafe_base64_encode($data) {
    $find = array('+', '/');
    $replace = array('-', '_');
    return str_replace($find, $replace, base64_encode($data));
}

function hmac_sha1($str, $key) {
    return hash_hmac("sha1", $str, $key, true);
}

define("AccessKey", "AccessKey11111");
define("SecretKey", "SecretKey22222");
define("BUCKET", "optest");

$url = $argv[1];  //第二个参数是url
$encodeURI = urlsafe_base64_encode($url);
echo "url:{$url}, \r\nencodeURI:\r\n{$encodeURI}\r\n\r\n";

$entry = isset($argv[2]) ? BUCKET.':'.$argv[2] : BUCKET;
//$entry = "optest"; //buticket
$encodedEntryURI = urlsafe_base64_encode($entry);
echo "entry:{$entry}, \r\nencodedEntryURI:\r\n{$encodedEntryURI}\r\n\r\n";

//是使用这个 path 来取 signingStr 的，官方文档说得不是很清楚。
$path = '/fetch/' . $encodeURI . '/to/' . $encodedEntryURI;

$parse = parse_url($path);
$path = $parse['path'];
$signingStr = isset($parse['query']) ? $path."?".$parse['query']."\n" : $path."\n";
//$signingStr = "{$path}?{$query}\n";  //如果缺省了$parse['query']，那就不需要再带?号了
//$signingStr = "{$path}?{$query}\n<body>";
var_dump($signingStr);

$sign = hmac_sha1($signingStr, SecretKey);
$encodedSign = urlsafe_base64_encode($sign);
var_dump($sign);


$accessToken = AccessKey.":{$encodedSign}";

echo "AccessToken:\r\n{$accessToken}\r\n\r\n";

echo "UploadURL:\r\nhttp://iovip.qbox.me/fetch/{$encodeURI}/to/{$encodedEntryURI}\r\n\r\n";

以前写的个:AK,KEY和scope替换成你的

$data['scope']='your bucket';
$data['deadline']=time()+3600;//过期时间
$encoded=urlsafe_base64_encode(json_encode($data));
$signature=hash_hmac('sha1',$encoded,'KEY',true);
$encode_signed = urlsafe_base64_encode($signature);
$UploadToken='AK:'.$encode_signed.':'.$encoded;
  
echo $UploadToken;

function urlsafe_base64_encode($data) {
    $data = base64_encode($data);
    $data = str_replace(array('+','/'),array('-','_'),$data);
    return $data;
}

话说为啥不用SDK的?
直接

$token = $auth->uploadToken($bucket);
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