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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab

/**
 * Server-side encryption integrations with Key Management Systems (SSE-KMS)
 */

#pragma once

#include <string>

static const std::string RGW_SSE_KMS_BACKEND_TESTING = "testing";
static const std::string RGW_SSE_KMS_BACKEND_BARBICAN = "barbican";
static const std::string RGW_SSE_KMS_BACKEND_VAULT = "vault";
static const std::string RGW_SSE_KMS_BACKEND_KMIP = "kmip";

static const std::string RGW_SSE_KMS_VAULT_AUTH_TOKEN = "token";
static const std::string RGW_SSE_KMS_VAULT_AUTH_AGENT = "agent";

static const std::string RGW_SSE_KMS_VAULT_SE_TRANSIT = "transit";
static const std::string RGW_SSE_KMS_VAULT_SE_KV = "kv";

static const std::string RGW_SSE_KMS_KMIP_SE_KV = "kv";

/**
 * Retrieves the actual server-side encryption key from a KMS system given a
 * key ID. Currently supported KMS systems are OpenStack Barbican and HashiCorp
 * Vault, but keys can also be retrieved from Ceph configuration file (if
 * kms is set to 'local').
 *
 * \params
 * TODO
 * \return
 */
int make_actual_key_from_kms(const DoutPrefixProvider *dpp, CephContext *cct,
                            std::map<std::string, bufferlist>& attrs,
                            std::string& actual_key);
int reconstitute_actual_key_from_kms(const DoutPrefixProvider *dpp, CephContext *cct,
                            std::map<std::string, bufferlist>& attrs,
                            std::string& actual_key);
int make_actual_key_from_sse_s3(const DoutPrefixProvider *dpp, CephContext *cct,
                            std::map<std::string, bufferlist>& attrs,
                            std::string& actual_key);
int reconstitute_actual_key_from_sse_s3(const DoutPrefixProvider *dpp, CephContext *cct,
                            std::map<std::string, bufferlist>& attrs,
                            std::string& actual_key);

int create_sse_s3_bucket_key(const DoutPrefixProvider *dpp, CephContext *cct,
                            const std::string& actual_key);

int remove_sse_s3_bucket_key(const DoutPrefixProvider *dpp, CephContext *cct,
                            const std::string& actual_key);

/**
 * SecretEngine Interface
 * Defining interface here such that we can use both a real implementation
 * of this interface, and a mock implementation in tests.
**/
class SecretEngine {

public:
  virtual int get_key(const DoutPrefixProvider *dpp, std::string_view key_id, std::string& actual_key) = 0;
  virtual ~SecretEngine(){};
};