// hostStyleBucketName returns true if the request should put the bucket in
// the host. This is false if S3ForcePathStyle is explicitly set or if the
// bucket is not DNS compatible.
func hostStyleBucketName(r *aws.Request, bucket string) bool {
if aws.BoolValue(r.Config.S3ForcePathStyle) {
return false
}
// Bucket might be DNS compatible but dots in the hostname will fail
// certificate validation, so do not use host-style.
if r.HTTPRequest.URL.Scheme == "https" && strings.Contains(bucket, ".") {
return false
}
// Use host-style if the bucket is DNS compatible
return dnsCompatibleBucketName(bucket)
}
func setupChecksumValidation(r *aws.Request) {
if aws.BoolValue(r.Config.DisableComputeChecksums) {
return
}
switch r.Operation.Name {
case opSendMessage:
r.Handlers.Unmarshal.PushBack(verifySendMessage)
case opSendMessageBatch:
r.Handlers.Unmarshal.PushBack(verifySendMessageBatch)
case opReceiveMessage:
r.Handlers.Unmarshal.PushBack(verifyReceiveMessage)
}
}
func validateCRC32(r *aws.Request) {
if r.Error != nil {
return // already have an error, no need to verify CRC
}
// Checksum validation is off, skip
if aws.BoolValue(r.Service.Config.DisableComputeChecksums) {
return
}
// Try to get CRC from response
header := r.HTTPResponse.Header.Get("X-Amz-Crc32")
if header == "" {
return // No header, skip
}
expected, err := strconv.ParseUint(header, 10, 32)
if err != nil {
return // Could not determine CRC value, skip
}
buf, err := drainBody(r.HTTPResponse.Body)
if err != nil { // failed to read the response body, skip
return
}
// Reset body for subsequent reads
r.HTTPResponse.Body = ioutil.NopCloser(bytes.NewReader(buf.Bytes()))
// Compute the CRC checksum
crc := crc32.ChecksumIEEE(buf.Bytes())
if crc != uint32(expected) {
// CRC does not match, set a retryable error
r.Retryable = aws.Bool(true)
r.Error = awserr.New("CRC32CheckFailed", "CRC32 integrity check failed", nil)
}
}
