/** Returns the plaintext length from the request and metadata; or -1 if unknown. */
protected final long plaintextLength(PutObjectRequest request, ObjectMetadata metadata) {
if (request.getFile() != null) {
return request.getFile().length();
} else if (request.getInputStream() != null
&& metadata.getRawMetadata().get(Headers.CONTENT_LENGTH) != null) {
return metadata.getContentLength();
}
return -1;
}
/**
* Returns the content length of the unencrypted data in a PutObjectRequest, or -1 if the original
* content-length isn't known.
*
* @param request The request to examine.
* @param metadata The metadata for the request.
* @return The content length of the unencrypted data in the request, or -1 if it isn't known.
* @deprecated no longer used and will be removed in the future
*/
@Deprecated
private static long getUnencryptedContentLength(
PutObjectRequest request, ObjectMetadata metadata) {
if (request.getFile() != null) {
return request.getFile().length();
} else if (request.getInputStream() != null
&& metadata.getRawMetadataValue(Headers.CONTENT_LENGTH) != null) {
return metadata.getContentLength();
}
return -1;
}
/**
* Update the request's ObjectMetadata with the necessary information for decrypting the object
*
* @param request Non-null PUT request encrypted using the given instruction
* @param instruction Non-null instruction used to encrypt the data in this PUT request.
* @deprecated no longer used and will be removed in the future
*/
@Deprecated
public static void updateMetadataWithEncryptionInstruction(
PutObjectRequest request, EncryptionInstruction instruction) {
byte[] keyBytesToStoreInMetadata = instruction.getEncryptedSymmetricKey();
Cipher symmetricCipher = instruction.getSymmetricCipher();
Map<String, String> materialsDescription = instruction.getMaterialsDescription();
ObjectMetadata metadata = request.getMetadata();
if (metadata == null) metadata = new ObjectMetadata();
if (request.getFile() != null) {
Mimetypes mimetypes = Mimetypes.getInstance();
metadata.setContentType(mimetypes.getMimetype(request.getFile()));
}
updateMetadata(metadata, keyBytesToStoreInMetadata, symmetricCipher, materialsDescription);
request.setMetadata(metadata);
}
private CipherLiteInputStream newS3CipherLiteInputStream(
PutObjectRequest req, ContentCryptoMaterial cekMaterial, long plaintextLength) {
try {
InputStream is = req.getInputStream();
if (req.getFile() != null) is = new RepeatableFileInputStream(req.getFile());
if (plaintextLength > -1) {
// S3 allows a single PUT to be no more than 5GB, which
// therefore won't exceed the maximum length that can be
// encrypted either using any cipher such as CBC or GCM.
// This ensures the plain-text read from the underlying data
// stream has the same length as the expected total.
is = new LengthCheckInputStream(is, plaintextLength, EXCLUDE_SKIPPED_BYTES);
}
return new CipherLiteInputStream(is, cekMaterial.getCipherLite(), DEFAULT_BUFFER_SIZE);
} catch (Exception e) {
throw new AmazonClientException("Unable to create cipher input stream: " + e.getMessage(), e);
}
}
/**
* @param plaintextLength the expected total number of bytes of the plaintext; or -1 if not
* available.
* @deprecated no longer used and will be removed in the future
*/
@Deprecated
private static InputStream getEncryptedInputStream(
PutObjectRequest request, CipherFactory cipherFactory, long plaintextLength) {
try {
InputStream is = request.getInputStream();
if (request.getFile() != null) {
// Historically file takes precedence over the original input
// stream
is = new RepeatableFileInputStream(request.getFile());
}
if (plaintextLength > -1) {
// This ensures the plain-text read from the underlying data
// stream has the same length as the expected total
is = new LengthCheckInputStream(is, plaintextLength, EXCLUDE_SKIPPED_BYTES);
}
return new RepeatableCipherInputStream(is, cipherFactory);
} catch (Exception e) {
throw new AmazonClientException("Unable to create cipher input stream: " + e.getMessage(), e);
}
}
/** Convenience method for getting the file specified in a request. */
public static File getRequestFile(final PutObjectRequest putObjectRequest) {
if (putObjectRequest.getFile() != null) return putObjectRequest.getFile();
return null;
}