rgw: Introduce BucketEncryption APIs to support SSE-S3 feature

This patch introduces support for 3 new BucketEncryption APIs which are listed
below and are helpful in supporting AWS SSE-S3 encryption mode.
PutBucketEncryption: https://docs.aws.amazon.com/AmazonS3/latest/API/API_PutBucketEncryption.html
GetBucketEncryption: https://docs.aws.amazon.com/AmazonS3/latest/API/API_GetBucketEncryption.html
DeleteBucketEncryption: https://docs.aws.amazon.com/AmazonS3/latest/API/API_DeleteBucketEncryption.html

The user provided parameters are parsed and stored in the bucket's extended
attributes RGW_ATTR_BUCKET_ENCRYPTION and
RGW_ATTR_BUCKET_ENCRYPTION_SSE_S3_KEY_ID.

Signed-off-by: Rahul Dev Parashar <rahul.dev@flipkart.com>

1 files changed, 34 insertions, 0 deletions

diff --git a/src/rgw/rgw_bucket_encryption.cc b/src/rgw/rgw_bucket_encryption.cc
new file mode 100644
index 00000000000..2913ce8a0ed
--- /dev/null
+++ b/src/rgw/rgw_bucket_encryption.cc
@@ -0,0 +1,34 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab ft=cpp
+//
+#include "rgw_bucket_encryption.h"
+#include "rgw_xml.h"
+
+void ApplyServerSideEncryptionByDefault::decode_xml(XMLObj *obj) {
+  RGWXMLDecoder::decode_xml("KMSMasterKeyID", kmsMasterKeyID, obj, false);
+  RGWXMLDecoder::decode_xml("SSEAlgorithm", sseAlgorithm, obj, false);
+}
+
+void ApplyServerSideEncryptionByDefault::dump_xml(Formatter *f) const {
+  encode_xml("SSEAlgorithm", sseAlgorithm, f);
+}
+
+void ServerSideEncryptionConfiguration::decode_xml(XMLObj *obj) {
+  RGWXMLDecoder::decode_xml("ApplyServerSideEncryptionByDefault", applyServerSideEncryptionByDefault, obj, true);
+  RGWXMLDecoder::decode_xml("BucketKeyEnabled", bucketKeyEnabled, obj, false);
+}
+
+void ServerSideEncryptionConfiguration::dump_xml(Formatter *f) const {
+  encode_xml("ApplyServerSideEncryptionByDefault", applyServerSideEncryptionByDefault, f);
+}
+
+void RGWBucketEncryptionConfig::decode_xml(XMLObj *obj) {
+  rule_exist = RGWXMLDecoder::decode_xml("Rule", rule, obj);
+  if(!rule_exist) {
+    throw RGWXMLDecoder::err("rule must be present in XML");
+  }
+}
+
+void RGWBucketEncryptionConfig::dump_xml(Formatter *f) const {
+  encode_xml("Rule", rule, f);
+}