credentials.h | Explore in Territory

//
//
// 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 GRPCPP_SECURITY_CREDENTIALS_H
#define GRPCPP_SECURITY_CREDENTIALS_H

#include <map>
#include <memory>
#include <vector>

#include <grpc/grpc_security_constants.h>
#include <grpcpp/channel.h>
#include <grpcpp/impl/grpc_library.h>
#include <grpcpp/security/auth_context.h>
#include <grpcpp/security/tls_credentials_options.h>
#include <grpcpp/support/channel_arguments.h>
#include <grpcpp/support/client_interceptor.h>
#include <grpcpp/support/status.h>
#include <grpcpp/support/string_ref.h>

struct grpc_call;

namespace grpc {
class CallCredentials;
class SecureCallCredentials;
class SecureChannelCredentials;
class ChannelCredentials;

std::shared_ptr<Channel> CreateCustomChannel(
    const grpc::string& target,
    const std::shared_ptr<grpc::ChannelCredentials>& creds,
    const grpc::ChannelArguments& args);

namespace experimental {
std::shared_ptr<grpc::Channel> CreateCustomChannelWithInterceptors(
    const grpc::string& target,
    const std::shared_ptr<grpc::ChannelCredentials>& creds,
    const grpc::ChannelArguments& args,
    std::vector<
        std::unique_ptr<grpc::experimental::ClientInterceptorFactoryInterface>>
        interceptor_creators);
}  // namespace experimental

/// Builds XDS Credentials.
std::shared_ptr<ChannelCredentials> XdsCredentials(
    const std::shared_ptr<ChannelCredentials>& fallback_creds);

/// A channel credentials object encapsulates all the state needed by a client
/// to authenticate with a server for a given channel.
/// It can make various assertions, e.g., about the client’s identity, role
/// for all the calls on that channel.
///
/// \see https://grpc.io/docs/guides/auth.html
class ChannelCredentials : private grpc::internal::GrpcLibrary { … };

/// A call credentials object encapsulates the state needed by a client to
/// authenticate with a server for a given call on a channel.
///
/// \see https://grpc.io/docs/guides/auth.html
class CallCredentials : private grpc::internal::GrpcLibrary { … };

/// Options used to build SslCredentials.
struct SslCredentialsOptions { … };

// Factories for building different types of Credentials The functions may
// return empty shared_ptr when credentials cannot be created. If a
// Credentials pointer is returned, it can still be invalid when used to create
// a channel. A lame channel will be created then and all rpcs will fail on it.

/// Builds credentials with reasonable defaults.
///
/// \warning Only use these credentials when connecting to a Google endpoint.
/// Using these credentials to connect to any other service may result in this
/// service being able to impersonate your client for requests to Google
/// services.
std::shared_ptr<ChannelCredentials> GoogleDefaultCredentials();

/// Builds SSL Credentials given SSL specific options
std::shared_ptr<ChannelCredentials> SslCredentials(
    const SslCredentialsOptions& options);

/// Builds credentials for use when running in GCE
///
/// \warning Only use these credentials when connecting to a Google endpoint.
/// Using these credentials to connect to any other service may result in this
/// service being able to impersonate your client for requests to Google
/// services.
std::shared_ptr<CallCredentials> GoogleComputeEngineCredentials();

constexpr long kMaxAuthTokenLifetimeSecs = …;

/// Builds Service Account JWT Access credentials.
/// json_key is the JSON key string containing the client's private key.
/// token_lifetime_seconds is the lifetime in seconds of each Json Web Token
/// (JWT) created with this credentials. It should not exceed
/// \a kMaxAuthTokenLifetimeSecs or will be cropped to this value.
std::shared_ptr<CallCredentials> ServiceAccountJWTAccessCredentials(
    const grpc::string& json_key,
    long token_lifetime_seconds = kMaxAuthTokenLifetimeSecs);

/// Builds refresh token credentials.
/// json_refresh_token is the JSON string containing the refresh token along
/// with a client_id and client_secret.
///
/// \warning Only use these credentials when connecting to a Google endpoint.
/// Using these credentials to connect to any other service may result in this
/// service being able to impersonate your client for requests to Google
/// services.
std::shared_ptr<CallCredentials> GoogleRefreshTokenCredentials(
    const grpc::string& json_refresh_token);

/// Builds access token credentials.
/// access_token is an oauth2 access token that was fetched using an out of band
/// mechanism.
///
/// \warning Only use these credentials when connecting to a Google endpoint.
/// Using these credentials to connect to any other service may result in this
/// service being able to impersonate your client for requests to Google
/// services.
std::shared_ptr<CallCredentials> AccessTokenCredentials(
    const grpc::string& access_token);

/// Builds IAM credentials.
///
/// \warning Only use these credentials when connecting to a Google endpoint.
/// Using these credentials to connect to any other service may result in this
/// service being able to impersonate your client for requests to Google
/// services.
std::shared_ptr<CallCredentials> GoogleIAMCredentials(
    const grpc::string& authorization_token,
    const grpc::string& authority_selector);

/// Combines a channel credentials and a call credentials into a composite
/// channel credentials.
std::shared_ptr<ChannelCredentials> CompositeChannelCredentials(
    const std::shared_ptr<ChannelCredentials>& channel_creds,
    const std::shared_ptr<CallCredentials>& call_creds);

/// Combines two call credentials objects into a composite call credentials.
std::shared_ptr<CallCredentials> CompositeCallCredentials(
    const std::shared_ptr<CallCredentials>& creds1,
    const std::shared_ptr<CallCredentials>& creds2);

/// Credentials for an unencrypted, unauthenticated channel
std::shared_ptr<ChannelCredentials> InsecureChannelCredentials();

/// User defined metadata credentials.
class MetadataCredentialsPlugin { … };

std::shared_ptr<CallCredentials> MetadataCredentialsFromPlugin(
    std::unique_ptr<MetadataCredentialsPlugin> plugin);

/// Builds External Account credentials.
/// json_string is the JSON string containing the credentials options.
/// scopes contains the scopes to be binded with the credentials.
std::shared_ptr<CallCredentials> ExternalAccountCredentials(
    const grpc::string& json_string, const std::vector<grpc::string>& scopes);

namespace experimental {

/// Options for creating STS Oauth Token Exchange credentials following the IETF
/// draft https://tools.ietf.org/html/draft-ietf-oauth-token-exchange-16.
/// Optional fields may be set to empty string. It is the responsibility of the
/// caller to ensure that the subject and actor tokens are refreshed on disk at
/// the specified paths.
struct StsCredentialsOptions { … };

grpc::Status StsCredentialsOptionsFromJson(const std::string& json_string,
                                           StsCredentialsOptions* options);

/// Creates STS credentials options from the $STS_CREDENTIALS environment
/// variable. This environment variable points to the path of a JSON file
/// comforming to the schema described above.
grpc::Status StsCredentialsOptionsFromEnv(StsCredentialsOptions* options);

std::shared_ptr<CallCredentials> StsCredentials(
    const StsCredentialsOptions& options);

std::shared_ptr<CallCredentials> MetadataCredentialsFromPlugin(
    std::unique_ptr<MetadataCredentialsPlugin> plugin,
    grpc_security_level min_security_level);

/// Options used to build AltsCredentials.
struct AltsCredentialsOptions { … };

/// Builds ALTS Credentials given ALTS specific options
std::shared_ptr<ChannelCredentials> AltsCredentials(
    const AltsCredentialsOptions& options);

/// Builds Local Credentials.
std::shared_ptr<ChannelCredentials> LocalCredentials(
    grpc_local_connect_type type);

/// Builds TLS Credentials given TLS options.
std::shared_ptr<ChannelCredentials> TlsCredentials(
    const TlsChannelCredentialsOptions& options);

}  // namespace experimental
}  // namespace grpc

#endif  // GRPCPP_SECURITY_CREDENTIALS_H
chromium/third_party/grpc/src/include/grpcpp/security/credentials.h
