| /* |
| * |
| * 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_CORE_TSI_TRANSPORT_SECURITY_H |
| #define GRPC_CORE_TSI_TRANSPORT_SECURITY_H |
| |
| #include <stdbool.h> |
| |
| #include "src/core/lib/debug/trace.h" |
| #include "src/core/tsi/transport_security_interface.h" |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| extern grpc_tracer_flag tsi_tracing_enabled; |
| |
| /* Base for tsi_frame_protector implementations. |
| See transport_security_interface.h for documentation. */ |
| typedef struct { |
| tsi_result (*protect)(tsi_frame_protector *self, |
| const unsigned char *unprotected_bytes, |
| size_t *unprotected_bytes_size, |
| unsigned char *protected_output_frames, |
| size_t *protected_output_frames_size); |
| tsi_result (*protect_flush)(tsi_frame_protector *self, |
| unsigned char *protected_output_frames, |
| size_t *protected_output_frames_size, |
| size_t *still_pending_size); |
| tsi_result (*unprotect)(tsi_frame_protector *self, |
| const unsigned char *protected_frames_bytes, |
| size_t *protected_frames_bytes_size, |
| unsigned char *unprotected_bytes, |
| size_t *unprotected_bytes_size); |
| void (*destroy)(tsi_frame_protector *self); |
| } tsi_frame_protector_vtable; |
| |
| struct tsi_frame_protector { |
| const tsi_frame_protector_vtable *vtable; |
| }; |
| |
| /* Base for tsi_handshaker implementations. |
| See transport_security_interface.h for documentation. */ |
| typedef struct { |
| tsi_result (*get_bytes_to_send_to_peer)(tsi_handshaker *self, |
| unsigned char *bytes, |
| size_t *bytes_size); |
| tsi_result (*process_bytes_from_peer)(tsi_handshaker *self, |
| const unsigned char *bytes, |
| size_t *bytes_size); |
| tsi_result (*get_result)(tsi_handshaker *self); |
| tsi_result (*extract_peer)(tsi_handshaker *self, tsi_peer *peer); |
| tsi_result (*create_frame_protector)(tsi_handshaker *self, |
| size_t *max_protected_frame_size, |
| tsi_frame_protector **protector); |
| void (*destroy)(tsi_handshaker *self); |
| tsi_result (*next)(tsi_handshaker *self, const unsigned char *received_bytes, |
| size_t received_bytes_size, |
| const unsigned char **bytes_to_send, |
| size_t *bytes_to_send_size, |
| tsi_handshaker_result **handshaker_result, |
| tsi_handshaker_on_next_done_cb cb, void *user_data); |
| } tsi_handshaker_vtable; |
| |
| struct tsi_handshaker { |
| const tsi_handshaker_vtable *vtable; |
| bool frame_protector_created; |
| bool handshaker_result_created; |
| }; |
| |
| /* Base for tsi_handshaker_result implementations. |
| See transport_security_interface.h for documentation. */ |
| typedef struct { |
| tsi_result (*extract_peer)(const tsi_handshaker_result *self, tsi_peer *peer); |
| tsi_result (*create_frame_protector)(const tsi_handshaker_result *self, |
| size_t *max_output_protected_frame_size, |
| tsi_frame_protector **protector); |
| tsi_result (*get_unused_bytes)(const tsi_handshaker_result *self, |
| const unsigned char **bytes, |
| size_t *bytes_size); |
| void (*destroy)(tsi_handshaker_result *self); |
| } tsi_handshaker_result_vtable; |
| |
| struct tsi_handshaker_result { |
| const tsi_handshaker_result_vtable *vtable; |
| }; |
| |
| /* Peer and property construction/destruction functions. */ |
| tsi_result tsi_construct_peer(size_t property_count, tsi_peer *peer); |
| tsi_peer_property tsi_init_peer_property(void); |
| void tsi_peer_property_destruct(tsi_peer_property *property); |
| tsi_result tsi_construct_string_peer_property(const char *name, |
| const char *value, |
| size_t value_length, |
| tsi_peer_property *property); |
| tsi_result tsi_construct_allocated_string_peer_property( |
| const char *name, size_t value_length, tsi_peer_property *property); |
| tsi_result tsi_construct_string_peer_property_from_cstring( |
| const char *name, const char *value, tsi_peer_property *property); |
| |
| /* Utils. */ |
| char *tsi_strdup(const char *src); /* Sadly, no strdup in C89. */ |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* GRPC_CORE_TSI_TRANSPORT_SECURITY_H */ |