--- /dev/null
+/*
+ *
+ * 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 <grpc/support/port_platform.h>
+
+#include <stdbool.h>
+
+#include "src/core/lib/debug/trace.h"
+#include "src/core/tsi/transport_security_interface.h"
+
+extern grpc_core::TraceFlag 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);
+ void (*shutdown)(tsi_handshaker* self);
+} tsi_handshaker_vtable;
+
+struct tsi_handshaker {
+ const tsi_handshaker_vtable* vtable;
+ bool frame_protector_created;
+ bool handshaker_result_created;
+ bool handshake_shutdown;
+};
+
+/* Base for tsi_handshaker_result implementations.
+ See transport_security_interface.h for documentation.
+ The exec_ctx parameter in create_zero_copy_grpc_protector is supposed to be
+ of type grpc_exec_ctx*, but we're using void* instead to avoid making the TSI
+ API depend on grpc. The create_zero_copy_grpc_protector() method is only used
+ in grpc, where we do need the exec_ctx passed through, but the API still
+ needs to compile in other applications, where grpc_exec_ctx is not defined.
+*/
+typedef struct {
+ tsi_result (*extract_peer)(const tsi_handshaker_result* self, tsi_peer* peer);
+ tsi_result (*create_zero_copy_grpc_protector)(
+ const tsi_handshaker_result* self,
+ size_t* max_output_protected_frame_size,
+ tsi_zero_copy_grpc_protector** protector);
+ 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);
+const tsi_peer_property* tsi_peer_get_property_by_name(const tsi_peer* peer,
+ const char* name);
+/* Utils. */
+char* tsi_strdup(const char* src); /* Sadly, no strdup in C89. */
+
+#endif /* GRPC_CORE_TSI_TRANSPORT_SECURITY_H */
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