Revert "Add ALTS C stack to gRPC core"

1 files changed, 0 insertions, 236 deletions

diff --git a/src/core/tsi/alts/frame_protector/frame_handler.h b/src/core/tsi/alts/frame_protector/frame_handler.h
deleted file mode 100644
index a703ff40d3..0000000000
--- a/src/core/tsi/alts/frame_protector/frame_handler.h
+++ /dev/null
@@ -1,236 +0,0 @@
-/*
- *
- * Copyright 2018 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_ALTS_FRAME_PROTECTOR_FRAME_HANDLER_H
-#define GRPC_CORE_TSI_ALTS_FRAME_PROTECTOR_FRAME_HANDLER_H
-
-#include <grpc/support/port_platform.h>
-
-#include <stdbool.h>
-#include <stdlib.h>
-
-const size_t kFrameMessageType = 0x06;
-const size_t kFrameLengthFieldSize = 4;
-const size_t kFrameMessageTypeFieldSize = 4;
-const size_t kFrameMaxSize = 1024 * 1024;
-const size_t kFrameHeaderSize =
-    kFrameLengthFieldSize + kFrameMessageTypeFieldSize;
-
-/**
- * Implementation of frame reader and frame writer. All APIs in the
- * header are thread-compatible.
- */
-
-/**
- * Main struct for a frame writer. It reads frames from an input buffer, and
- * writes the contents as raw bytes. It does not own the input buffer.
- */
-typedef struct alts_frame_writer {
-  const unsigned char* input_buffer;
-  unsigned char header_buffer[kFrameHeaderSize];
-  size_t input_bytes_written;
-  size_t header_bytes_written;
-  size_t input_size;
-} alts_frame_writer;
-
-/**
- * Main struct for a frame reader. It reads raw bytes and puts the framed
- * result into an output buffer. It does not own the output buffer.
- */
-typedef struct alts_frame_reader {
-  unsigned char* output_buffer;
-  unsigned char header_buffer[kFrameHeaderSize];
-  size_t header_bytes_read;
-  size_t output_bytes_read;
-  size_t bytes_remaining;
-} alts_frame_reader;
-
-/**
- * This method creates a frame writer instance and initializes its internal
- * states.
- */
-alts_frame_writer* alts_create_frame_writer();
-
-/**
- * This method resets internal states of a frame writer and prepares to write
- * a single frame. It does not take ownership of payload_buffer.
- * The payload_buffer must outlive the writer.
- *
- * - writer: a frame writer instance.
- * - buffer: a buffer storing full payload data to be framed.
- * - length: size of payload data.
- *
- * The method returns true on success and false otherwise.
- */
-bool alts_reset_frame_writer(alts_frame_writer* writer,
-                             const unsigned char* buffer, size_t length);
-
-/**
- * This method writes up to bytes_size bytes of a frame to output.
- *
- * - writer: a frame writer instance.
- * - output: an output buffer used to store the frame.
- * - bytes_size: an in/out parameter that stores the size of output buffer
- *   before the call, and gets written the number of frame bytes written to the
- *   buffer.
- *
- * The method returns true on success and false otherwise.
- */
-bool alts_write_frame_bytes(alts_frame_writer* writer, unsigned char* output,
-                            size_t* bytes_size);
-
-/**
- * This method checks if a reset can be called to write a new frame. It returns
- * true if it's the first time to frame a payload, or the current frame has
- * been finished processing. It returns false if it's not ready yet to start a
- * new frame (e.g., more payload data needs to be accumulated to process the
- * current frame).
- *
- * if (alts_is_frame_writer_done(writer)) {
- *   // a new frame can be written, call reset.
- *   alts_reset_frame_writer(writer, payload_buffer, payload_size);
- * } else {
- *   // accumulate more payload data until a full frame can be written.
- * }
- *
- * - writer: a frame writer instance.
- */
-bool alts_is_frame_writer_done(alts_frame_writer* writer);
-
-/**
- * This method returns the number of bytes left to write before a complete frame
- * is formed.
- *
- * - writer: a frame writer instance.
- */
-size_t alts_get_num_writer_bytes_remaining(alts_frame_writer* writer);
-
-/**
- * This method destroys a frame writer instance.
- *
- * - writer: a frame writer instance.
- */
-void alts_destroy_frame_writer(alts_frame_writer* writer);
-
-/**
- * This method creates a frame reader instance and initializes its internal
- * states.
- */
-alts_frame_reader* alts_create_frame_reader();
-
-/**
- * This method resets internal states of a frame reader (including setting its
- * output_buffer with buffer), and prepares to write processed bytes to
- * an output_buffer. It does not take ownership of buffer. The buffer must
- * outlive reader.
- *
- * - reader: a frame reader instance.
- * - buffer: an output buffer used to store deframed results.
- *
- * The method returns true on success and false otherwise.
- */
-bool alts_reset_frame_reader(alts_frame_reader* reader, unsigned char* buffer);
-
-/**
- * This method processes up to the number of bytes given in bytes_size. It may
- * choose not to process all the bytes, if, for instance, more bytes are
- * given to the method than required to complete the current frame.
- *
- * - reader: a frame reader instance.
- * - bytes: a buffer that stores data to be processed.
- * - bytes_size: an in/out parameter that stores the size of bytes before the
- *   call and gets written the number of bytes processed.
- *
- * The method returns true on success and false otherwise.
- */
-bool alts_read_frame_bytes(alts_frame_reader* reader,
-                           const unsigned char* bytes, size_t* bytes_size);
-
-/**
- * This method checks if a frame length has been read.
- *
- * - reader: a frame reader instance.
- *
- * The method returns true if a frame length has been read and false otherwise.
- */
-bool alts_has_read_frame_length(alts_frame_reader* reader);
-
-/**
- * This method returns the number of bytes the frame reader intends to write.
- * It may only be called if alts_has_read_frame_length() returns true.
- *
- * - reader: a frame reader instance.
- */
-size_t alts_get_reader_bytes_remaining(alts_frame_reader* reader);
-
-/**
- * This method resets output_buffer but does not otherwise modify other internal
- * states of a frame reader instance. After being set, the new output_buffer
- * will hold the deframed payload held by the original output_buffer. It does
- * not take ownership of buffer. The buffer must outlive the reader.
- * To distinguish between two reset methods on a frame reader,
- *
- * if (alts_fh_is_frame_reader_done(reader)) {
- *   // if buffer contains a full payload to be deframed, call reset.
- *   alts_reset_frame_reader(reader, buffer);
- * }
- *
- * // if remaining buffer space is not enough to hold a full payload
- * if (buffer_space_remaining < alts_get_reader_bytes_remaining(reader)) {
- *   // allocate enough space for a new buffer, copy back data processed so far,
- *   // and call reset.
- *   alts_reset_reader_output_buffer(reader, new_buffer).
- * }
- *
- * - reader: a frame reader instance.
- * - buffer: a buffer used to set reader's output_buffer.
- */
-void alts_reset_reader_output_buffer(alts_frame_reader* reader,
-                                     unsigned char* buffer);
-
-/**
- * This method checks if reset can be called to start processing a new frame.
- * If true and reset was previously called, a full frame has been processed and
- * the content of the frame is available in output_buffer.
-
- * - reader: a frame reader instance.
- */
-bool alts_is_frame_reader_done(alts_frame_reader* reader);
-
-/**
- * This method returns output_bytes_read of a frame reader instance.
- *
- * - reader: a frame reader instance.
- */
-size_t alts_get_output_bytes_read(alts_frame_reader* reader);
-
-/**
- * This method returns output_buffer of a frame reader instance.
- *
- * - reader: a frame reader instance.
- */
-unsigned char* alts_get_output_buffer(alts_frame_reader* reader);
-
-/**
- * This method destroys a frame reader instance.
- *
- * - reader: a frame reader instance.
- */
-void alts_destroy_frame_reader(alts_frame_reader* reader);
-
-#endif /* GRPC_CORE_TSI_ALTS_FRAME_PROTECTOR_FRAME_HANDLER_H */