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Verifier for FlexBuffers (#6977)

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* Verifier for FlexBuffers

* Verifier improvements & fuzzer
This commit is contained in:
Wouter van Oortmerssen
2021-12-10 14:59:08 -08:00
committed by GitHub
parent 705f27f6ee
commit e367ca32ad
11 changed files with 300 additions and 6 deletions
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9
src/flatc.cpp
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@@ -510,9 +510,12 @@ int FlatCompiler::Compile(int argc, const char **argv) {
LoadBinarySchema(*parser.get(), filename, contents);
} else if (opts.use_flexbuffers) {
if (opts.lang_to_generate == IDLOptions::kJson) {
parser->flex_root_ = flexbuffers::GetRoot(
reinterpret_cast<const uint8_t *>(contents.c_str()),
contents.size());
auto data = reinterpret_cast<const uint8_t *>(contents.c_str());
auto size = contents.size();
std::vector<bool> reuse_tracker;
if (!flexbuffers::VerifyBuffer(data, size, &reuse_tracker))
Error("flexbuffers file failed to verify: " + filename, false);
parser->flex_root_ = flexbuffers::GetRoot(data, size);
} else {
parser->flex_builder_.Clear();
ParseFile(*parser.get(), filename, contents, include_directories);