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Julien Boeuf authored
The purpose of this is to be able to install a composition policy that describes which types are incompatible and that will be enforced during call creds composition. If this functionality is wanted it will be done in an additive function in the API like : void grpc_call_credentials_set_composite_policy( grpc_call_credentials_composite_policy policy);
Julien Boeuf authoredThe purpose of this is to be able to install a composition policy that describes which types are incompatible and that will be enforced during call creds composition. If this functionality is wanted it will be done in an additive function in the API like : void grpc_call_credentials_set_composite_policy( grpc_call_credentials_composite_policy policy);
secure_credentials.cc 8.58 KiB
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#include <grpc/support/log.h>
#include <grpc++/channel.h>
#include <grpc++/impl/grpc_library.h>
#include <grpc++/support/channel_arguments.h>
#include "src/cpp/client/create_channel_internal.h"
#include "src/cpp/client/secure_credentials.h"
namespace grpc {
std::shared_ptr<grpc::Channel> SecureChannelCredentials::CreateChannel(
const string& target, const grpc::ChannelArguments& args) {
grpc_channel_args channel_args;
args.SetChannelArgs(&channel_args);
return CreateChannelInternal(
args.GetSslTargetNameOverride(),
grpc_secure_channel_create(c_creds_, target.c_str(), &channel_args,
nullptr));
}
bool SecureCallCredentials::ApplyToCall(grpc_call* call) {
return grpc_call_set_credentials(call, c_creds_) == GRPC_CALL_OK;
}
namespace {
std::shared_ptr<ChannelCredentials> WrapChannelCredentials(
grpc_channel_credentials* creds) {
return creds == nullptr ? nullptr : std::shared_ptr<ChannelCredentials>(
new SecureChannelCredentials(creds));
}
std::shared_ptr<CallCredentials> WrapCallCredentials(
grpc_call_credentials* creds) {
return creds == nullptr ? nullptr : std::shared_ptr<CallCredentials>(
new SecureCallCredentials(creds));
}
} // namespace
std::shared_ptr<ChannelCredentials> GoogleDefaultCredentials() {
GrpcLibrary init; // To call grpc_init().
return WrapChannelCredentials(grpc_google_default_credentials_create());
}
// Builds SSL Credentials given SSL specific options
std::shared_ptr<ChannelCredentials> SslCredentials(
const SslCredentialsOptions& options) {
GrpcLibrary init; // To call grpc_init().
grpc_ssl_pem_key_cert_pair pem_key_cert_pair = {
options.pem_private_key.c_str(), options.pem_cert_chain.c_str()};
grpc_channel_credentials* c_creds = grpc_ssl_credentials_create(
options.pem_root_certs.empty() ? nullptr : options.pem_root_certs.c_str(),
options.pem_private_key.empty() ? nullptr : &pem_key_cert_pair, nullptr);
return WrapChannelCredentials(c_creds);
}
// Builds credentials for use when running in GCE
std::shared_ptr<CallCredentials> GoogleComputeEngineCredentials() {
GrpcLibrary init; // To call grpc_init().
return WrapCallCredentials(
grpc_google_compute_engine_credentials_create(nullptr));
}
// Builds JWT credentials.
std::shared_ptr<CallCredentials> ServiceAccountJWTAccessCredentials(
const grpc::string& json_key, long token_lifetime_seconds) {
GrpcLibrary init; // To call grpc_init().
if (token_lifetime_seconds <= 0) {
gpr_log(GPR_ERROR,
"Trying to create JWTCredentials with non-positive lifetime");
return WrapCallCredentials(nullptr);
}
gpr_timespec lifetime =
gpr_time_from_seconds(token_lifetime_seconds, GPR_TIMESPAN);
return WrapCallCredentials(grpc_service_account_jwt_access_credentials_create(
json_key.c_str(), lifetime, nullptr));
}
// Builds refresh token credentials.
std::shared_ptr<CallCredentials> GoogleRefreshTokenCredentials(
const grpc::string& json_refresh_token) {
GrpcLibrary init; // To call grpc_init().
return WrapCallCredentials(grpc_google_refresh_token_credentials_create(
json_refresh_token.c_str(), nullptr));
}
// Builds access token credentials.
std::shared_ptr<CallCredentials> AccessTokenCredentials(
const grpc::string& access_token) {
GrpcLibrary init; // To call grpc_init().
return WrapCallCredentials(
grpc_access_token_credentials_create(access_token.c_str(), nullptr));
}
// Builds IAM credentials.
std::shared_ptr<CallCredentials> GoogleIAMCredentials(
const grpc::string& authorization_token,
const grpc::string& authority_selector) {
GrpcLibrary init; // To call grpc_init().
return WrapCallCredentials(grpc_google_iam_credentials_create(
authorization_token.c_str(), authority_selector.c_str(), nullptr));
}
// Combines one channel credentials and one call credentials into a channel
// composite credentials.
std::shared_ptr<ChannelCredentials> CompositeChannelCredentials(
const std::shared_ptr<ChannelCredentials>& channel_creds,
const std::shared_ptr<CallCredentials>& call_creds) { // Note that we are not saving shared_ptrs to the two credentials passed in
// here. This is OK because the underlying C objects (i.e., channel_creds and
// call_creds) into grpc_composite_credentials_create will see their refcounts
// incremented.
SecureChannelCredentials* s_channel_creds =
channel_creds->AsSecureCredentials();
SecureCallCredentials* s_call_creds = call_creds->AsSecureCredentials();
if (s_channel_creds && s_call_creds) {
return WrapChannelCredentials(grpc_composite_channel_credentials_create(
s_channel_creds->GetRawCreds(), s_call_creds->GetRawCreds(), nullptr));
}
return nullptr;
}
void MetadataCredentialsPluginWrapper::Destroy(void* wrapper) {
if (wrapper == nullptr) return;
MetadataCredentialsPluginWrapper* w =
reinterpret_cast<MetadataCredentialsPluginWrapper*>(wrapper);
delete w;
}
void MetadataCredentialsPluginWrapper::GetMetadata(
void* wrapper, grpc_auth_metadata_context context,
grpc_credentials_plugin_metadata_cb cb, void* user_data) {
GPR_ASSERT(wrapper);
MetadataCredentialsPluginWrapper* w =
reinterpret_cast<MetadataCredentialsPluginWrapper*>(wrapper);
if (!w->plugin_) {
cb(user_data, NULL, 0, GRPC_STATUS_OK, NULL);
return;
}
if (w->plugin_->IsBlocking()) {
w->thread_pool_->Add(
std::bind(&MetadataCredentialsPluginWrapper::InvokePlugin, w,
context.service_url, cb, user_data));
} else {
w->InvokePlugin(context.service_url, cb, user_data);
}
}
void MetadataCredentialsPluginWrapper::InvokePlugin(
const char* service_url, grpc_credentials_plugin_metadata_cb cb,
void* user_data) {
std::multimap<grpc::string, grpc::string> metadata;
Status status = plugin_->GetMetadata(service_url, &metadata);
std::vector<grpc_metadata> md;
for (auto it = metadata.begin(); it != metadata.end(); ++it) {
grpc_metadata md_entry;
md_entry.key = it->first.c_str();
md_entry.value = it->second.data();
md_entry.value_length = it->second.size();
md_entry.flags = 0;
md.push_back(md_entry);
}
cb(user_data, md.empty() ? nullptr : &md[0], md.size(),
static_cast<grpc_status_code>(status.error_code()),
status.error_message().c_str());
}
MetadataCredentialsPluginWrapper::MetadataCredentialsPluginWrapper(
std::unique_ptr<MetadataCredentialsPlugin> plugin)
: thread_pool_(CreateDefaultThreadPool()), plugin_(std::move(plugin)) {}
std::shared_ptr<CallCredentials> MetadataCredentialsFromPlugin(
std::unique_ptr<MetadataCredentialsPlugin> plugin) {
GrpcLibrary init; // To call grpc_init().
MetadataCredentialsPluginWrapper* wrapper =
new MetadataCredentialsPluginWrapper(std::move(plugin));
grpc_metadata_credentials_plugin c_plugin = {
MetadataCredentialsPluginWrapper::GetMetadata, MetadataCredentialsPluginWrapper::Destroy, wrapper, ""};
return WrapCallCredentials(
grpc_metadata_credentials_create_from_plugin(c_plugin, nullptr));
}
} // namespace grpc