eden-emu/cpp-httplib
14
0
Fork 0
mirror of https://github.com/yhirose/cpp-httplib.git synced 2025-05-14 16:58:30 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Fix successful decompress reported as Error::Read (#1612)

Browse source 
* Fix successful decompress reported as Error::Read

Streams less than 4096 bytes are sometimes reported as failed reads because stream_.avail_in is not reduced to 0. The next iteration of the loop finds `prev_avail_in == strm_.avail_in` and return false. `ret = inflate(...)` returns Z_STREAM_END on the first iteration of the loop indicating that inflate is finished. This fix prevents the second iteration of the loop from failing.

* Fix successful decompress reported as Error::Read

- Add unit tests for raw deflate that illustrates the decompression failure when there are extra trailing bytes
This commit is contained in:
bdenhollander 2023-07-11 18:35:27 -04:00 • committed by GitHub
parent 52d8dd41f1
commit ee625232a4
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
2 changed files with 54 additions and 5 deletions
Download patch file Download diff file Expand all files Collapse all files

53
test/test.cc
View file

@ -3330,6 +3330,59 @@ TEST(GzipDecompressor, ChunkedDecompression) {
ASSERT_EQ(data, decompressed_data);
}
TEST(GzipDecompressor, DeflateDecompression) {
std::string original_text = "Raw deflate without gzip";
unsigned char data[32] = {0x78, 0x9C, 0x0B, 0x4A, 0x2C, 0x57, 0x48, 0x49,
0x4D, 0xCB, 0x49, 0x2C, 0x49, 0x55, 0x28, 0xCF,
0x2C, 0xC9, 0xC8, 0x2F, 0x2D, 0x51, 0x48, 0xAF,
0xCA, 0x2C, 0x00, 0x00, 0x6F, 0x98, 0x09, 0x2E};
std::string compressed_data(data, data + sizeof(data) / sizeof(data[0]));
std::string decompressed_data;
{
httplib::detail::gzip_decompressor decompressor;
bool result = decompressor.decompress(
compressed_data.data(), compressed_data.size(),
[&](const char *decompressed_data_chunk,
size_t decompressed_data_chunk_size) {
decompressed_data.insert(decompressed_data.size(),
decompressed_data_chunk,
decompressed_data_chunk_size);
return true;
});
ASSERT_TRUE(result);
}
ASSERT_EQ(original_text, decompressed_data);
}
TEST(GzipDecompressor, DeflateDecompressionTrailingBytes) {
std::string original_text = "Raw deflate without gzip";
unsigned char data[40] = {0x78, 0x9C, 0x0B, 0x4A, 0x2C, 0x57, 0x48, 0x49,
0x4D, 0xCB, 0x49, 0x2C, 0x49, 0x55, 0x28, 0xCF,
0x2C, 0xC9, 0xC8, 0x2F, 0x2D, 0x51, 0x48, 0xAF,
0xCA, 0x2C, 0x00, 0x00, 0x6F, 0x98, 0x09, 0x2E,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
std::string compressed_data(data, data + sizeof(data) / sizeof(data[0]));
std::string decompressed_data;
{
httplib::detail::gzip_decompressor decompressor;
bool result = decompressor.decompress(
compressed_data.data(), compressed_data.size(),
[&](const char *decompressed_data_chunk,
size_t decompressed_data_chunk_size) {
decompressed_data.insert(decompressed_data.size(),
decompressed_data_chunk,
decompressed_data_chunk_size);
return true;
});
ASSERT_TRUE(result);
}
ASSERT_EQ(original_text, decompressed_data);
}
#ifdef _WIN32
TEST(GzipDecompressor, LargeRandomData) {