* *
    *
  1. Normalize the string
    2. *
  2. replace all "%2F" with "/"
    3. *
  3. replace all "//" with "/%2F"
    4. *
* *

* Bos object key can contain arbitrary characters, which may result double * slash in the url path. Apache Http client will replace "//" in the path * with a single '/', which makes the object key incorrect. Thus we replace * "//" with "/%2F" here. * * @param $path string the path string to normalize. * @return string the normalized path string. * @see #normalize(string) */ public static function urlEncodeExceptSlash($path) { return str_replace("%2F", "/", HttpUtils::urlEncode($path)); } /** * Normalize a string for use in BCE web service APIs. The normalization * algorithm is: *

*

    *
  1. Convert the string into a UTF-8 byte array.
    2. *
  2. Encode all octets into percent-encoding, except all URI unreserved * characters per the RFC 3986.
    3. *
* *

* All letters used in the percent-encoding are in uppercase. * * @param $value string the string to normalize. * @return string the normalized string. */ public static function urlEncode($value) { $result = ''; for ($i = 0; $i < strlen($value); ++$i) { $result .= HttpUtils::$PERCENT_ENCODED_STRINGS[ord($value[$i])]; } return $result; } /** * @param $parameters array * @param $forSignature bool * @return string */ public static function getCanonicalQueryString(array $parameters, $forSignature) { if (count($parameters) == 0) { return ''; } $parameterStrings = array(); foreach ($parameters as $k => $v) { if ($forSignature && strcasecmp(HttpHeaders::AUTHORIZATION, $k) == 0) { continue; } if (!isset($k)) { throw new \InvalidArgumentException( "parameter key should not be null" ); } if (isset($v)) { $parameterStrings[] = HttpUtils::urlEncode($k) . '=' . HttpUtils::urlEncode((string) $v); } else { if ($forSignature) { $parameterStrings[] = HttpUtils::urlEncode($k) . '='; } else { $parameterStrings[] = HttpUtils::urlEncode($k); } } } sort($parameterStrings); return implode('&', $parameterStrings); } } HttpUtils::__init();