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//
//
// Copyright 2015 gRPC authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
//
#ifndef GRPC_SRC_CPP_CLIENT_SECURE_CREDENTIALS_H
#define GRPC_SRC_CPP_CLIENT_SECURE_CREDENTIALS_H
#include <stddef.h>
#include <memory>
#include <util/generic/string.h>
#include <util/string/cast.h>
#include <vector>
#include "y_absl/strings/str_cat.h"
#include <grpc/grpc.h>
#include <grpc/grpc_security.h>
#include <grpc/status.h>
#include <grpcpp/channel.h>
#include <grpcpp/impl/grpc_library.h>
#include <grpcpp/security/credentials.h>
#include <grpcpp/support/channel_arguments.h>
#include <grpcpp/support/client_interceptor.h>
// TODO(yashykt): We shouldn't be including "src/core" headers.
#include "src/core/lib/iomgr/exec_ctx.h"
#include "src/core/lib/security/credentials/credentials.h"
#include "src/cpp/server/thread_pool_interface.h"
namespace grpc {
class Channel;
class SecureChannelCredentials final : public ChannelCredentials {
public:
explicit SecureChannelCredentials(grpc_channel_credentials* c_creds);
~SecureChannelCredentials() override {
grpc_core::ExecCtx exec_ctx;
if (c_creds_ != nullptr) c_creds_->Unref();
}
grpc_channel_credentials* GetRawCreds() { return c_creds_; }
std::shared_ptr<Channel> CreateChannelImpl(
const TString& target, const ChannelArguments& args) override;
SecureChannelCredentials* AsSecureCredentials() override { return this; }
private:
std::shared_ptr<Channel> CreateChannelWithInterceptors(
const TString& target, const ChannelArguments& args,
std::vector<std::unique_ptr<
grpc::experimental::ClientInterceptorFactoryInterface>>
interceptor_creators) override;
grpc_channel_credentials* const c_creds_;
};
class SecureCallCredentials final : public CallCredentials {
public:
explicit SecureCallCredentials(grpc_call_credentials* c_creds);
~SecureCallCredentials() override {
grpc_core::ExecCtx exec_ctx;
if (c_creds_ != nullptr) c_creds_->Unref();
}
grpc_call_credentials* GetRawCreds() { return c_creds_; }
bool ApplyToCall(grpc_call* call) override;
SecureCallCredentials* AsSecureCredentials() override { return this; }
TString DebugString() override {
return y_absl::StrCat("SecureCallCredentials{",
TString(c_creds_->debug_string()), "}");
}
private:
grpc_call_credentials* const c_creds_;
};
namespace internal {
std::shared_ptr<ChannelCredentials> WrapChannelCredentials(
grpc_channel_credentials* creds);
} // namespace internal
namespace experimental {
// Transforms C++ STS Credentials options to core options. The pointers of the
// resulting core options point to the memory held by the C++ options so C++
// options need to be kept alive until after the core credentials creation.
grpc_sts_credentials_options StsCredentialsCppToCoreOptions(
const StsCredentialsOptions& options);
} // namespace experimental
class MetadataCredentialsPluginWrapper final : private internal::GrpcLibrary {
public:
static void Destroy(void* wrapper);
static int GetMetadata(
void* wrapper, grpc_auth_metadata_context context,
grpc_credentials_plugin_metadata_cb cb, void* user_data,
grpc_metadata creds_md[GRPC_METADATA_CREDENTIALS_PLUGIN_SYNC_MAX],
size_t* num_creds_md, grpc_status_code* status,
const char** error_details);
static char* DebugString(void* wrapper);
explicit MetadataCredentialsPluginWrapper(
std::unique_ptr<MetadataCredentialsPlugin> plugin);
private:
void InvokePlugin(
grpc_auth_metadata_context context,
grpc_credentials_plugin_metadata_cb cb, void* user_data,
grpc_metadata creds_md[GRPC_METADATA_CREDENTIALS_PLUGIN_SYNC_MAX],
size_t* num_creds_md, grpc_status_code* status_code,
const char** error_details);
std::unique_ptr<ThreadPoolInterface> thread_pool_;
std::unique_ptr<MetadataCredentialsPlugin> plugin_;
};
} // namespace grpc
#endif // GRPC_SRC_CPP_CLIENT_SECURE_CREDENTIALS_H
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