private function calcStringToSign()

in src/OSS/Signer/SignerV1.php [81:134]
42 lines of code
11 McCabe index (conditional complexity)

    private function calcStringToSign($method, $date, array $headers, $resourcePath, array $query)
    {
        /*
		SignToString =
			VERB + "\n"
			+ Content-MD5 + "\n"
			+ Content-Type + "\n"
			+ Date + "\n"
			+ CanonicalizedOSSHeaders
			+ CanonicalizedResource
		Signature = base64(hmac-sha1(AccessKeySecret, SignToString))
	    */
        $contentMd5 = '';
        $contentType = '';
        // CanonicalizedOSSHeaders
        $signheaders = array();
        foreach ($headers as $key => $value) {
            $lowk = strtolower($key);
            if (strncmp($lowk, "x-oss-", 6) == 0) {
                $signheaders[$lowk] = $value;
            } else if ($lowk === 'content-md5') {
                $contentMd5 = $value;
            } else if ($lowk === 'content-type') {
                $contentType = $value;
            }
        }
        ksort($signheaders);
        $canonicalizedOSSHeaders = '';
        foreach ($signheaders as $key => $value) {
            $canonicalizedOSSHeaders .= $key . ':' . $value . "\n";
        }
        // CanonicalizedResource
        $signquery = array();
        foreach ($query as $key => $value) {
            if (in_array($key, $this->signKeyList)) {
                $signquery[$key] = $value;
            }
        }
        ksort($signquery);
        $sortedQueryList = array();
        foreach ($signquery as $key => $value) {
            if (strlen($value) > 0) {
                $sortedQueryList[] = $key . '=' . $value;
            } else {
                $sortedQueryList[] = $key;
            }
        }
        $queryStringSorted = implode('&', $sortedQueryList);
        $canonicalizedResource = $resourcePath;
        if (!empty($queryStringSorted)) {
            $canonicalizedResource .= '?' . $queryStringSorted;
        }
        return $method . "\n" . $contentMd5 . "\n" . $contentType . "\n" . $date . "\n" . $canonicalizedOSSHeaders . $canonicalizedResource;
    }