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Added tampered buffer deserialization tests #174

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Added tampered buffer deserialization tests #174

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9d8aaf3
Added tampered buffer deserialization tests
MiguelCompany Feb 3, 2021
a220591
Keep linters happy.
MiguelCompany Feb 3, 2021
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53 changes: 53 additions & 0 deletions test_rmw_implementation/test/test_serialize_deserialize.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -23,6 +23,8 @@

#include "test_msgs/msg/basic_types.h"
#include "test_msgs/msg/basic_types.hpp"
#include "test_msgs/msg/unbounded_sequences.h"
#include "test_msgs/msg/unbounded_sequences.hpp"

#include "./allocator_testing_utils.h"

Expand Down Expand Up @@ -141,6 +143,57 @@ TEST_F(CLASSNAME(TestSerializeDeserialize, RMW_IMPLEMENTATION), clean_round_trip
rmw_get_error_string().str;
}

TEST_F(CLASSNAME(TestSerializeDeserialize, RMW_IMPLEMENTATION), tampered_buffer_for_c_message) {
const rosidl_message_type_support_t * ts{
ROSIDL_GET_MSG_TYPE_SUPPORT(test_msgs, msg, UnboundedSequences)};
test_msgs__msg__UnboundedSequences message{};
ASSERT_TRUE(test_msgs__msg__UnboundedSequences__init(&message));
rcutils_allocator_t default_allocator = rcutils_get_default_allocator();
rmw_serialized_message_t serialized_message = rmw_get_zero_initialized_serialized_message();
ASSERT_EQ(
RMW_RET_OK, rmw_serialized_message_init(
&serialized_message, 0lu, &default_allocator)) << rmw_get_error_string().str;

rmw_ret_t ret = rmw_serialize(&message, ts, &serialized_message);
EXPECT_EQ(RMW_RET_OK, ret) << rmw_get_error_string().str;
EXPECT_NE(nullptr, serialized_message.buffer);
EXPECT_GT(serialized_message.buffer_length, 0lu);

// Tamper the serialized message to force deserialization failure
memset(serialized_message.buffer, 0xFF, serialized_message.buffer_length);

ret = rmw_deserialize(&serialized_message, ts, &message);
EXPECT_NE(RMW_RET_OK, ret) << rmw_get_error_string().str;

EXPECT_EQ(RMW_RET_OK, rmw_serialized_message_fini(&serialized_message)) <<
rmw_get_error_string().str;
}

TEST_F(CLASSNAME(TestSerializeDeserialize, RMW_IMPLEMENTATION), tampered_buffer_for_cpp_message) {
const rosidl_message_type_support_t * ts =
rosidl_typesupport_cpp::get_message_type_support_handle<test_msgs::msg::UnboundedSequences>();
test_msgs::msg::UnboundedSequences message{};
rcutils_allocator_t default_allocator = rcutils_get_default_allocator();
rmw_serialized_message_t serialized_message = rmw_get_zero_initialized_serialized_message();
ASSERT_EQ(
RMW_RET_OK, rmw_serialized_message_init(
&serialized_message, 0lu, &default_allocator)) << rmw_get_error_string().str;

rmw_ret_t ret = rmw_serialize(&message, ts, &serialized_message);
EXPECT_EQ(RMW_RET_OK, ret) << rmw_get_error_string().str;
EXPECT_NE(nullptr, serialized_message.buffer);
EXPECT_GT(serialized_message.buffer_length, 0lu);

// Tamper the serialized message to force deserialization failure
memset(serialized_message.buffer, 0xFF, serialized_message.buffer_length);

ret = rmw_deserialize(&serialized_message, ts, &message);
EXPECT_NE(RMW_RET_OK, ret) << rmw_get_error_string().str;

EXPECT_EQ(RMW_RET_OK, rmw_serialized_message_fini(&serialized_message)) <<
rmw_get_error_string().str;
}

TEST_F(CLASSNAME(TestSerializeDeserialize, RMW_IMPLEMENTATION), rmw_get_serialized_message_size)
{
if (rmw_get_serialized_message_size(nullptr, nullptr, nullptr) != RMW_RET_UNSUPPORTED) {
Expand Down