1 files changed, 244 insertions, 0 deletions
diff --git a/test/core/tsi/alts/frame_protector/frame_handler_test.cc b/test/core/tsi/alts/frame_protector/frame_handler_test.cc
new file mode 100644
index 0000000000..6434ea1d31
--- /dev/null
+++ b/test/core/tsi/alts/frame_protector/frame_handler_test.cc
@@ -0,0 +1,244 @@
+/*
+ *
+ * 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.
+ *
+ */
+
+#include <stdint.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+
+#include "src/core/lib/gpr/useful.h"
+#include "src/core/tsi/alts/frame_protector/frame_handler.h"
+#include "test/core/tsi/alts/crypt/gsec_test_util.h"
+
+const size_t kFrameHandlerTestBufferSize = 1024;
+
+typedef struct frame_handler {
+  alts_frame_writer* writer;
+  alts_frame_reader* reader;
+  unsigned char* buffer;
+  size_t buffer_size;
+} frame_handler;
+
+static size_t frame_length(size_t payload_length) {
+  return payload_length + kFrameHeaderSize;
+}
+
+static frame_handler* create_frame_handler() {
+  frame_handler* handler =
+      static_cast<frame_handler*>(gpr_malloc(sizeof(frame_handler)));
+  handler->writer = alts_create_frame_writer();
+  handler->reader = alts_create_frame_reader();
+  handler->buffer = nullptr;
+  handler->buffer_size = 0;
+  return handler;
+}
+
+static void destroy_frame_handler(frame_handler* handler) {
+  if (handler != nullptr) {
+    alts_destroy_frame_reader(handler->reader);
+    alts_destroy_frame_writer(handler->writer);
+    if (handler->buffer != nullptr) gpr_free(handler->buffer);
+    gpr_free(handler);
+  }
+}
+
+static void frame(frame_handler* handler, unsigned char* payload,
+                  size_t payload_length, size_t write_length) {
+  handler->buffer_size = frame_length(payload_length);
+  handler->buffer =
+      static_cast<unsigned char*>(gpr_malloc(handler->buffer_size));
+  GPR_ASSERT(alts_reset_frame_writer(handler->writer, payload, payload_length));
+  size_t offset = 0;
+  while (offset < handler->buffer_size &&
+         !alts_is_frame_writer_done(handler->writer)) {
+    size_t bytes_written = GPR_MIN(write_length, handler->buffer_size - offset);
+    GPR_ASSERT(alts_write_frame_bytes(handler->writer, handler->buffer + offset,
+                                      &bytes_written));
+    offset += bytes_written;
+  }
+  GPR_ASSERT(alts_is_frame_writer_done(handler->writer));
+  GPR_ASSERT(handler->buffer_size == offset);
+}
+
+static size_t deframe(frame_handler* handler, unsigned char* bytes,
+                      size_t read_length) {
+  GPR_ASSERT(alts_reset_frame_reader(handler->reader, bytes));
+  size_t offset = 0;
+  while (offset < handler->buffer_size &&
+         !alts_is_frame_reader_done(handler->reader)) {
+    size_t bytes_read = GPR_MIN(read_length, handler->buffer_size - offset);
+    GPR_ASSERT(alts_read_frame_bytes(handler->reader, handler->buffer + offset,
+                                     &bytes_read));
+    offset += bytes_read;
+  }
+  GPR_ASSERT(alts_is_frame_reader_done(handler->reader));
+  GPR_ASSERT(handler->buffer_size == offset);
+  return offset - handler->reader->header_bytes_read;
+}
+
+static void frame_n_deframe(frame_handler* handler, unsigned char* payload,
+                            size_t payload_length, size_t write_length,
+                            size_t read_length) {
+  frame(handler, payload, payload_length, write_length);
+  unsigned char* bytes =
+      static_cast<unsigned char*>(gpr_malloc(kFrameHandlerTestBufferSize));
+  size_t deframed_payload_length = deframe(handler, bytes, read_length);
+  GPR_ASSERT(payload_length == deframed_payload_length);
+  GPR_ASSERT(memcmp(payload, bytes, payload_length) == 0);
+  gpr_free(bytes);
+}
+
+static void frame_handler_test_frame_deframe() {
+  unsigned char payload[] = "hello world";
+  size_t payload_length = strlen((char*)payload) + 1;
+  frame_handler* handler = create_frame_handler();
+  frame_n_deframe(handler, payload, payload_length,
+                  frame_length(payload_length), frame_length(payload_length));
+  destroy_frame_handler(handler);
+}
+
+static void frame_handler_test_small_buffer() {
+  unsigned char payload[] = "hello world";
+  size_t payload_length = strlen(reinterpret_cast<char*>(payload)) + 1;
+  frame_handler* handler = create_frame_handler();
+  frame_n_deframe(handler, payload, payload_length, 1, 1);
+  destroy_frame_handler(handler);
+}
+
+static void frame_handler_test_null_input_stream() {
+  frame_handler* handler = create_frame_handler();
+  GPR_ASSERT(!alts_reset_frame_writer(handler->writer, nullptr, 0));
+  destroy_frame_handler(handler);
+}
+
+static void frame_handler_test_bad_input_length() {
+  unsigned char payload[] = "hello world";
+  frame_handler* handler = create_frame_handler();
+  GPR_ASSERT(!alts_reset_frame_writer(handler->writer, payload, SIZE_MAX));
+  destroy_frame_handler(handler);
+}
+
+static void frame_handler_test_null_writer_byte_length() {
+  unsigned char payload[] = "hello world";
+  size_t payload_length = strlen(reinterpret_cast<char*>(payload)) + 1;
+  frame_handler* handler = create_frame_handler();
+  GPR_ASSERT(alts_reset_frame_writer(handler->writer, payload, payload_length));
+  GPR_ASSERT(
+      !alts_write_frame_bytes(handler->writer, handler->buffer, nullptr));
+  destroy_frame_handler(handler);
+}
+
+static void frame_handler_test_null_writer_bytes() {
+  unsigned char payload[] = "hello world";
+  size_t payload_length = strlen(reinterpret_cast<char*>(payload)) + 1;
+  frame_handler* handler = create_frame_handler();
+  GPR_ASSERT(alts_reset_frame_writer(handler->writer, payload, payload_length));
+  GPR_ASSERT(
+      !alts_write_frame_bytes(handler->writer, nullptr, &payload_length));
+  destroy_frame_handler(handler);
+}
+
+static void frame_handler_test_bad_frame_length() {
+  unsigned char payload[] = "hello world";
+  size_t payload_length = strlen(reinterpret_cast<char*>(payload)) + 1;
+  frame_handler* handler = create_frame_handler();
+  frame(handler, payload, payload_length, payload_length);
+  memset(handler->buffer, 0x00, kFrameLengthFieldSize);
+  unsigned char* bytes =
+      static_cast<unsigned char*>(gpr_malloc(kFrameHandlerTestBufferSize));
+  GPR_ASSERT(alts_reset_frame_reader(handler->reader, bytes));
+  size_t bytes_read = handler->buffer_size;
+  GPR_ASSERT(
+      !alts_read_frame_bytes(handler->reader, handler->buffer, &bytes_read));
+  GPR_ASSERT(alts_is_frame_reader_done(handler->reader));
+  GPR_ASSERT(bytes_read == 0);
+  gpr_free(bytes);
+  destroy_frame_handler(handler);
+}
+
+static void frame_handler_test_unsupported_message_type() {
+  unsigned char payload[] = "hello world";
+  size_t payload_length = strlen(reinterpret_cast<char*>(payload)) + 1;
+  frame_handler* handler = create_frame_handler();
+  frame(handler, payload, payload_length, payload_length);
+  memset(handler->buffer + kFrameLengthFieldSize, 0x00,
+         kFrameMessageTypeFieldSize);
+  unsigned char* bytes =
+      static_cast<unsigned char*>(gpr_malloc(kFrameHandlerTestBufferSize));
+  GPR_ASSERT(alts_reset_frame_reader(handler->reader, bytes));
+  size_t bytes_read = handler->buffer_size;
+  GPR_ASSERT(
+      !alts_read_frame_bytes(handler->reader, handler->buffer, &bytes_read));
+  GPR_ASSERT(alts_is_frame_reader_done(handler->reader));
+  GPR_ASSERT(bytes_read == 0);
+  gpr_free(bytes);
+  destroy_frame_handler(handler);
+}
+
+static void frame_handler_test_null_output_stream() {
+  unsigned char payload[] = "hello world";
+  size_t payload_length = strlen(reinterpret_cast<char*>(payload)) + 1;
+  frame_handler* handler = create_frame_handler();
+  frame(handler, payload, payload_length, payload_length);
+  GPR_ASSERT(!alts_reset_frame_reader(handler->reader, nullptr));
+  destroy_frame_handler(handler);
+}
+
+static void frame_handler_test_null_reader_byte_length() {
+  unsigned char payload[] = "hello world";
+  size_t payload_length = strlen(reinterpret_cast<char*>(payload)) + 1;
+  frame_handler* handler = create_frame_handler();
+  frame(handler, payload, payload_length, payload_length);
+  unsigned char* bytes =
+      static_cast<unsigned char*>(gpr_malloc(kFrameHandlerTestBufferSize));
+  GPR_ASSERT(alts_reset_frame_reader(handler->reader, bytes));
+  GPR_ASSERT(!alts_read_frame_bytes(handler->reader, handler->buffer, nullptr));
+  gpr_free(bytes);
+  destroy_frame_handler(handler);
+}
+
+static void frame_handler_test_null_reader_bytes() {
+  unsigned char payload[] = "hello world";
+  size_t payload_length = strlen(reinterpret_cast<char*>(payload)) + 1;
+  frame_handler* handler = create_frame_handler();
+  frame(handler, payload, payload_length, payload_length);
+  unsigned char* bytes =
+      static_cast<unsigned char*>(gpr_malloc(kFrameHandlerTestBufferSize));
+  GPR_ASSERT(alts_reset_frame_reader(handler->reader, bytes));
+  size_t bytes_read = handler->buffer_size;
+  GPR_ASSERT(!alts_read_frame_bytes(handler->reader, nullptr, &bytes_read));
+  gpr_free(bytes);
+  destroy_frame_handler(handler);
+}
+
+int main(int argc, char** argv) {
+  frame_handler_test_frame_deframe();
+  frame_handler_test_small_buffer();
+  frame_handler_test_null_input_stream();
+  frame_handler_test_bad_input_length();
+  frame_handler_test_null_writer_byte_length();
+  frame_handler_test_null_writer_bytes();
+  frame_handler_test_bad_frame_length();
+  frame_handler_test_unsupported_message_type();
+  frame_handler_test_null_output_stream();
+  frame_handler_test_null_reader_byte_length();
+  frame_handler_test_null_reader_bytes();
+  return 0;
+}