| /* |
| * |
| * Copyright 2015, Google Inc. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| */ |
| |
| #ifndef GRPC_INTERNAL_CORE_SECURITY_SECURITY_CONNECTOR_H |
| #define GRPC_INTERNAL_CORE_SECURITY_SECURITY_CONNECTOR_H |
| |
| #include <grpc/grpc_security.h> |
| #include "src/core/iomgr/endpoint.h" |
| #include "src/core/tsi/transport_security_interface.h" |
| |
| /* --- status enum. --- */ |
| |
| typedef enum { |
| GRPC_SECURITY_OK = 0, |
| GRPC_SECURITY_PENDING, |
| GRPC_SECURITY_ERROR |
| } grpc_security_status; |
| |
| /* --- URL schemes. --- */ |
| |
| #define GRPC_SSL_URL_SCHEME "https" |
| #define GRPC_FAKE_SECURITY_URL_SCHEME "http+fake_security" |
| |
| /* --- security_connector object. --- |
| |
| A security connector object represents away to configure the underlying |
| transport security mechanism and check the resulting trusted peer. */ |
| |
| typedef struct grpc_security_connector grpc_security_connector; |
| |
| #define GRPC_SECURITY_CONNECTOR_ARG "grpc.security_connector" |
| |
| typedef void (*grpc_security_check_cb)(void *user_data, |
| grpc_security_status status); |
| |
| typedef struct { |
| void (*destroy)(grpc_security_connector *sc); |
| grpc_security_status (*create_handshaker)(grpc_security_connector *sc, |
| tsi_handshaker **handshaker); |
| grpc_security_status (*check_peer)(grpc_security_connector *sc, tsi_peer peer, |
| grpc_security_check_cb cb, |
| void *user_data); |
| } grpc_security_connector_vtable; |
| |
| struct grpc_security_connector { |
| const grpc_security_connector_vtable *vtable; |
| gpr_refcount refcount; |
| int is_client_side; |
| const char *url_scheme; |
| }; |
| |
| /* Increments the refcount. */ |
| grpc_security_connector *grpc_security_connector_ref( |
| grpc_security_connector *sc); |
| |
| /* Decrements the refcount and destroys the object if it reaches 0. */ |
| void grpc_security_connector_unref(grpc_security_connector *sc); |
| |
| /* Handshake creation. */ |
| grpc_security_status grpc_security_connector_create_handshaker( |
| grpc_security_connector *sc, tsi_handshaker **handshaker); |
| |
| /* Check the peer. |
| Implementations can choose to check the peer either synchronously or |
| asynchronously. In the first case, a successful call will return |
| GRPC_SECURITY_OK. In the asynchronous case, the call will return |
| GRPC_SECURITY_PENDING unless an error is detected early on. |
| Ownership of the peer is transfered. |
| */ |
| grpc_security_status grpc_security_connector_check_peer( |
| grpc_security_connector *sc, tsi_peer peer, grpc_security_check_cb cb, |
| void *user_data); |
| |
| /* Util to encapsulate the connector in a channel arg. */ |
| grpc_arg grpc_security_connector_to_arg(grpc_security_connector *sc); |
| |
| /* Util to get the connector from a channel arg. */ |
| grpc_security_connector *grpc_security_connector_from_arg(const grpc_arg *arg); |
| |
| /* Util to find the connector from channel args. */ |
| grpc_security_connector *grpc_find_security_connector_in_args( |
| const grpc_channel_args *args); |
| |
| /* --- channel_security_connector object. --- |
| |
| A channel security connector object represents away to configure the |
| underlying transport security mechanism on the client side. */ |
| |
| typedef struct grpc_channel_security_connector grpc_channel_security_connector; |
| |
| struct grpc_channel_security_connector { |
| grpc_security_connector base; /* requires is_client_side to be non 0. */ |
| grpc_credentials *request_metadata_creds; |
| grpc_security_status (*check_call_host)(grpc_channel_security_connector *sc, |
| const char *host, |
| grpc_security_check_cb cb, |
| void *user_data); |
| }; |
| |
| /* Checks that the host that will be set for a call is acceptable. |
| Implementations can choose do the check either synchronously or |
| asynchronously. In the first case, a successful call will return |
| GRPC_SECURITY_OK. In the asynchronous case, the call will return |
| GRPC_SECURITY_PENDING unless an error is detected early on. */ |
| grpc_security_status grpc_channel_security_connector_check_call_host( |
| grpc_channel_security_connector *sc, const char *host, |
| grpc_security_check_cb cb, void *user_data); |
| |
| /* --- Creation security connectors. --- */ |
| |
| /* For TESTING ONLY! |
| Creates a fake connector that emulates real channel security. */ |
| grpc_channel_security_connector *grpc_fake_channel_security_connector_create( |
| grpc_credentials *request_metadata_creds, int call_host_check_is_async); |
| |
| /* For TESTING ONLY! |
| Creates a fake connector that emulates real server security. */ |
| grpc_security_connector *grpc_fake_server_security_connector_create(void); |
| |
| /* Config for ssl clients. */ |
| typedef struct { |
| unsigned char *pem_private_key; |
| size_t pem_private_key_size; |
| unsigned char *pem_cert_chain; |
| size_t pem_cert_chain_size; |
| unsigned char *pem_root_certs; |
| size_t pem_root_certs_size; |
| } grpc_ssl_config; |
| |
| /* Creates an SSL channel_security_connector. |
| - request_metadata_creds is the credentials object which metadata |
| will be sent with each request. This parameter can be NULL. |
| - config is the SSL config to be used for the SSL channel establishment. |
| - is_client should be 0 for a server or a non-0 value for a client. |
| - secure_peer_name is the secure peer name that should be checked in |
| grpc_channel_security_connector_check_peer. This parameter may be NULL in |
| which case the peer name will not be checked. Note that if this parameter |
| is not NULL, then, pem_root_certs should not be NULL either. |
| - sc is a pointer on the connector to be created. |
| This function returns GRPC_SECURITY_OK in case of success or a |
| specific error code otherwise. |
| */ |
| grpc_security_status grpc_ssl_channel_security_connector_create( |
| grpc_credentials *request_metadata_creds, |
| const grpc_ssl_config *config, const char *target_name, |
| const char *overridden_target_name, grpc_channel_security_connector **sc); |
| |
| /* Gets the default ssl roots. */ |
| size_t grpc_get_default_ssl_roots(const unsigned char **pem_root_certs); |
| |
| /* Config for ssl servers. */ |
| typedef struct { |
| unsigned char **pem_private_keys; |
| size_t *pem_private_keys_sizes; |
| unsigned char **pem_cert_chains; |
| size_t *pem_cert_chains_sizes; |
| size_t num_key_cert_pairs; |
| unsigned char *pem_root_certs; |
| size_t pem_root_certs_size; |
| } grpc_ssl_server_config; |
| |
| /* Creates an SSL server_security_connector. |
| - config is the SSL config to be used for the SSL channel establishment. |
| - sc is a pointer on the connector to be created. |
| This function returns GRPC_SECURITY_OK in case of success or a |
| specific error code otherwise. |
| */ |
| grpc_security_status grpc_ssl_server_security_connector_create( |
| const grpc_ssl_server_config *config, grpc_security_connector **sc); |
| |
| #endif /* GRPC_INTERNAL_CORE_SECURITY_SECURITY_CONNECTOR_H */ |