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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.
*
*/
#include <functional>
#include <map>
#include <memory>
#include <grpcpp/impl/codegen/slice.h>
#include <grpcpp/security/auth_metadata_processor.h>
#include "src/cpp/common/secure_auth_context.h"
#include "src/cpp/server/secure_server_credentials.h"
namespace grpc {
void AuthMetadataProcessorAyncWrapper::Destroy(void* wrapper) {
auto* w = static_cast<AuthMetadataProcessorAyncWrapper*>(wrapper);
delete w;
}
void AuthMetadataProcessorAyncWrapper::Process(
void* wrapper, grpc_auth_context* context, const grpc_metadata* md,
size_t num_md, grpc_process_auth_metadata_done_cb cb, void* user_data) {
auto* w = static_cast<AuthMetadataProcessorAyncWrapper*>(wrapper);
if (!w->processor_) {
// Early exit.
cb(user_data, nullptr, 0, nullptr, 0, GRPC_STATUS_OK, nullptr);
return;
}
if (w->processor_->IsBlocking()) {
w->thread_pool_->Add([w, context, md, num_md, cb, user_data] {
w->AuthMetadataProcessorAyncWrapper::InvokeProcessor(context, md, num_md,
cb, user_data);
});
} else {
// invoke directly.
w->InvokeProcessor(context, md, num_md, cb, user_data);
}
}
void AuthMetadataProcessorAyncWrapper::InvokeProcessor(
grpc_auth_context* ctx, const grpc_metadata* md, size_t num_md,
grpc_process_auth_metadata_done_cb cb, void* user_data) {
AuthMetadataProcessor::InputMetadata metadata;
for (size_t i = 0; i < num_md; i++) {
metadata.insert(std::make_pair(StringRefFromSlice(&md[i].key),
StringRefFromSlice(&md[i].value)));
}
SecureAuthContext context(ctx);
AuthMetadataProcessor::OutputMetadata consumed_metadata;
AuthMetadataProcessor::OutputMetadata response_metadata;
Status status = processor_->Process(metadata, &context, &consumed_metadata,
&response_metadata);
std::vector<grpc_metadata> consumed_md;
for (auto it = consumed_metadata.begin(); it != consumed_metadata.end();
++it) {
grpc_metadata md_entry;
md_entry.key = SliceReferencingString(it->first);
md_entry.value = SliceReferencingString(it->second);
md_entry.flags = 0;
consumed_md.push_back(md_entry);
}
std::vector<grpc_metadata> response_md;
for (auto it = response_metadata.begin(); it != response_metadata.end();
++it) {
grpc_metadata md_entry;
md_entry.key = SliceReferencingString(it->first);
md_entry.value = SliceReferencingString(it->second);
md_entry.flags = 0;
response_md.push_back(md_entry);
}
auto consumed_md_data = consumed_md.empty() ? nullptr : &consumed_md[0];
auto response_md_data = response_md.empty() ? nullptr : &response_md[0];
cb(user_data, consumed_md_data, consumed_md.size(), response_md_data,
response_md.size(), static_cast<grpc_status_code>(status.error_code()),
status.error_message().c_str());
}
int SecureServerCredentials::AddPortToServer(const grpc::string& addr,
grpc_server* server) {
return grpc_server_add_secure_http2_port(server, addr.c_str(), creds_);
}
void SecureServerCredentials::SetAuthMetadataProcessor(
const std::shared_ptr<AuthMetadataProcessor>& processor) {
auto* wrapper = new AuthMetadataProcessorAyncWrapper(processor);
grpc_server_credentials_set_auth_metadata_processor(
creds_, {AuthMetadataProcessorAyncWrapper::Process,
AuthMetadataProcessorAyncWrapper::Destroy, wrapper});
}
std::shared_ptr<ServerCredentials> SslServerCredentials(
const SslServerCredentialsOptions& options) {
std::vector<grpc_ssl_pem_key_cert_pair> pem_key_cert_pairs;
for (auto key_cert_pair = options.pem_key_cert_pairs.begin();
key_cert_pair != options.pem_key_cert_pairs.end(); key_cert_pair++) {
grpc_ssl_pem_key_cert_pair p = {key_cert_pair->private_key.c_str(),
key_cert_pair->cert_chain.c_str()};
pem_key_cert_pairs.push_back(p);
}
grpc_server_credentials* c_creds = grpc_ssl_server_credentials_create_ex(
options.pem_root_certs.empty() ? nullptr : options.pem_root_certs.c_str(),
pem_key_cert_pairs.empty() ? nullptr : &pem_key_cert_pairs[0],
pem_key_cert_pairs.size(),
options.force_client_auth
? GRPC_SSL_REQUEST_AND_REQUIRE_CLIENT_CERTIFICATE_AND_VERIFY
: options.client_certificate_request,
nullptr);
return std::shared_ptr<ServerCredentials>(
new SecureServerCredentials(c_creds));
}
namespace experimental {
std::shared_ptr<ServerCredentials> AltsServerCredentials(
const AltsServerCredentialsOptions& options) {
grpc_alts_credentials_options* c_options =
grpc_alts_credentials_server_options_create();
grpc_server_credentials* c_creds =
grpc_alts_server_credentials_create(c_options);
grpc_alts_credentials_options_destroy(c_options);
return std::shared_ptr<ServerCredentials>(
new SecureServerCredentials(c_creds));
}
std::shared_ptr<ServerCredentials> LocalServerCredentials(
grpc_local_connect_type type) {
return std::shared_ptr<ServerCredentials>(
new SecureServerCredentials(grpc_local_server_credentials_create(type)));
}
} // namespace experimental
} // namespace grpc
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