Ashin Walpola
0e9525162d
obu-firmware builds against vanetza-idf from microbu-esp32c5/external, but that tree was gitignored, so a clone of this repository could not build the firmware it ships. It is now committed here as ordinary files in its own folder, microbu-esp32c5/: the colleague's commit cf4b99f plus the V2X2MAP bridge's signature verification (--trust) used on the bench. Nothing is fetched from or pushed to the colleague's repository; this repository and its remotes carry everything. The folder's own .gitignore keeps build output, downloaded components and private key material out, as it did there; the committed file set is identical to that repository's tracked files. The ESP32-C5 is still flashed from obu-firmware/, which only takes vanetza-idf from microbu-esp32c5/, so the two stay separate folders. FLASHING.md says how to take a newer version of the colleague's tree (copy it over the folder, rebuild, test, commit).
129 lines
4.3 KiB
C++
129 lines
4.3 KiB
C++
#include <gtest/gtest.h>
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#include <vanetza/common/byte_buffer_sink.hpp>
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#include <vanetza/common/byte_buffer_source.hpp>
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#include <vanetza/security/v2/length_coding.hpp>
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#include <vanetza/security/v2/serialization.hpp>
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#include <boost/iostreams/stream_buffer.hpp>
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using vanetza::ByteBuffer;
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using vanetza::InputArchive;
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using vanetza::OutputArchive;
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using namespace vanetza::security::v2;
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TEST(LengthEncoding, count_leading_ones)
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{
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EXPECT_EQ(0, count_leading_ones(0x00));
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EXPECT_EQ(1, count_leading_ones(0x80));
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EXPECT_EQ(1, count_leading_ones(0x81));
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EXPECT_EQ(1, count_leading_ones(0xa0));
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EXPECT_EQ(1, count_leading_ones(0xa1));
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EXPECT_EQ(2, count_leading_ones(0xd3));
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EXPECT_EQ(3, count_leading_ones(0xe8));
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EXPECT_EQ(7, count_leading_ones(0xfe));
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EXPECT_EQ(8, count_leading_ones(0xff));
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}
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TEST(LengthEncoding, encode_length)
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{
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EXPECT_EQ(ByteBuffer { 0x00 }, encode_length(0));
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EXPECT_EQ(ByteBuffer { 5 }, encode_length(5));
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EXPECT_EQ(ByteBuffer { 123 }, encode_length(123));
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EXPECT_EQ(ByteBuffer { 127 }, encode_length(127));
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EXPECT_EQ((ByteBuffer { 0x80, 128 }), encode_length(128));
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EXPECT_EQ((ByteBuffer { 0xbf, 0xff }), encode_length(0x3fff));
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EXPECT_EQ((ByteBuffer { 0x81, 0xff }), encode_length(0x01ff));
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EXPECT_EQ((ByteBuffer { 0xdf, 0xff, 0xff }), encode_length(0x1fffff));
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EXPECT_EQ((ByteBuffer { 0xe0, 0x20, 0x00, 0x00 }), encode_length(0x200000));
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EXPECT_EQ(ByteBuffer { 0x0a }, encode_length(10));
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EXPECT_EQ((ByteBuffer { 0x88, 0x88 }), encode_length(2184));
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}
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TEST(LengthEncoding, decode_length_empty_buffer)
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{
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ByteBuffer buffer;
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auto decoded = decode_length(buffer);
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EXPECT_EQ(buffer.end(), std::get<0>(decoded));
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EXPECT_EQ(0, std::get<1>(decoded));
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}
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TEST(LengthEncoding, decode_length_zero_size)
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{
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ByteBuffer buffer { 0x00, 0xC0, 0xFF, 0xEE };
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auto decoded = decode_length(buffer);
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EXPECT_EQ(std::next(buffer.begin()), std::get<0>(decoded));
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EXPECT_EQ(0, std::get<1>(decoded));
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}
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TEST(LengthEncoding, decode_length_prefix_too_long)
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{
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ByteBuffer buffer { 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xba, 0xbe };
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auto decoded = decode_length(buffer);
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EXPECT_EQ(buffer.begin(), std::get<0>(decoded));
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EXPECT_EQ(0, std::get<1>(decoded));
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}
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TEST(LengthEncoding, decode_length_buffer_too_short)
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{
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ByteBuffer buffer { 0x02, 0xde };
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auto decoded_tuple = decode_length(buffer);
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EXPECT_EQ(std::next(buffer.begin()), std::get<0>(decoded_tuple));
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EXPECT_EQ(2, std::get<1>(decoded_tuple));
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}
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TEST(LengthEncoding, decode_length_good)
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{
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ByteBuffer buffer { 0xe0, 0x00, 0x00, 0x04, 0x12, 0x34, 0x56, 0x78, 0x9a, 0xbc, 0xde };
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auto decoded_tuple = decode_length(buffer);
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EXPECT_EQ(std::next(buffer.begin(), 4), std::get<0>(decoded_tuple));
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EXPECT_EQ(4, std::get<1>(decoded_tuple));
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}
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TEST(LengthEncoding, serialize_length)
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{
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ByteBuffer buf;
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auto serialize_length_into_buffer = [&buf](std::size_t length) {
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vanetza::byte_buffer_sink sink(buf);
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boost::iostreams::stream_buffer<vanetza::byte_buffer_sink> stream(sink);
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OutputArchive oa(stream);
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serialize_length(oa, length);
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};
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serialize_length_into_buffer(0x200000);
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ASSERT_EQ(4, buf.size());
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EXPECT_EQ(0xE0, buf[0]);
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EXPECT_EQ(0x20, buf[1]);
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EXPECT_EQ(0x00, buf[2]);
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EXPECT_EQ(0x00, buf[3]);
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buf.clear();
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serialize_length_into_buffer(128);
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ASSERT_EQ(2, buf.size());
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EXPECT_EQ(0x80, buf[0]);
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EXPECT_EQ(0x80, buf[1]);
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}
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TEST(LengthEncoding, length_coding_size)
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{
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EXPECT_EQ(1, length_coding_size(0x3f));
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EXPECT_EQ(1, length_coding_size(0x20));
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EXPECT_EQ(1, length_coding_size(0x7f));
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EXPECT_EQ(1, length_coding_size(0x40));
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EXPECT_EQ(2, length_coding_size(0x3fff));
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EXPECT_EQ(2, length_coding_size(0x2000));
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EXPECT_EQ(3, length_coding_size(0x7fff));
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EXPECT_EQ(3, length_coding_size(0x4000));
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EXPECT_EQ(3, length_coding_size(0x1fffff));
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EXPECT_EQ(4, length_coding_size(0x3fffff));
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}
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TEST(LengthEncoding, WebValidator_length)
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{
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ByteBuffer buf {{ 0x81, 0x03 }};
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vanetza::byte_buffer_source source(buf);
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boost::iostreams::stream_buffer<vanetza::byte_buffer_source> stream(source);
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InputArchive ia(stream);
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size_t length = deserialize_length(ia);
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EXPECT_EQ(259, length);
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}
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