Example #1
0
// queryV4Signprepares and runs the req request, signed with aws v4 signatures.
// If resp is not nil, the XML data contained in the response
// body will be unmarshalled on it.
func (s3 *S3) queryV4Sign(req *request, resp interface{}) error {
	if req.headers == nil {
		req.headers = map[string][]string{}
	}

	err := s3.setBaseURL(req)
	if err != nil {
		return err
	}

	hreq, err := s3.setupHttpRequest(req)
	if err != nil {
		return err
	}

	// req.Host must be set for V4 signature calculation
	hreq.Host = hreq.URL.Host

	signer := aws.NewV4Signer(s3.Auth, "s3", s3.Region)
	signer.IncludeXAmzContentSha256 = true
	signer.Sign(hreq)

	_, err = s3.doHttpRequest(hreq, resp)
	return err
}
Example #2
0
// prepare sets up req to be delivered to S3.
func (s3 *S3) prepare(req *request) error {
	// Copy so they can be mutated without affecting on retries.
	params := make(url.Values)
	headers := make(http.Header)
	for k, v := range req.params {
		params[k] = v
	}
	for k, v := range req.headers {
		headers[k] = v
	}
	req.params = params
	req.headers = headers

	if !req.prepared {
		req.prepared = true
		if req.method == "" {
			req.method = "GET"
		}

		if !strings.HasPrefix(req.path, "/") {
			req.path = "/" + req.path
		}

		err := s3.setBaseURL(req)
		if err != nil {
			return err
		}
	}

	if s3.Signature == aws.V2Signature && s3.Auth.Token() != "" {
		req.headers["X-Amz-Security-Token"] = []string{s3.Auth.Token()}
	} else if s3.Auth.Token() != "" {
		req.params.Set("X-Amz-Security-Token", s3.Auth.Token())
	}

	if s3.Signature == aws.V2Signature {
		// Always sign again as it's not clear how far the
		// server has handled a previous attempt.
		u, err := url.Parse(req.baseurl)
		if err != nil {
			return err
		}

		signpathPartiallyEscaped := partiallyEscapedPath(req.path)
		if strings.IndexAny(s3.Region.S3BucketEndpoint, "${bucket}") >= 0 {
			signpathPartiallyEscaped = "/" + req.bucket + signpathPartiallyEscaped
		}
		req.headers["Host"] = []string{u.Host}
		req.headers["Date"] = []string{time.Now().In(time.UTC).Format(time.RFC1123)}

		sign(s3.Auth, req.method, signpathPartiallyEscaped, req.params, req.headers)
	} else {
		hreq, err := s3.setupHttpRequest(req)
		if err != nil {
			return err
		}

		hreq.Host = hreq.URL.Host
		signer := aws.NewV4Signer(s3.Auth, "s3", s3.Region)
		signer.IncludeXAmzContentSha256 = true
		signer.Sign(hreq)

		req.payload = hreq.Body
		if _, ok := headers["Content-Length"]; ok {
			req.headers["Content-Length"] = headers["Content-Length"]
		}
	}
	return nil
}