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examples | ||
src | ||
.cargo-checksum.json | ||
.travis.yml | ||
Cargo.toml | ||
check-rustfmt.sh | ||
format-all.sh | ||
LICENSE | ||
README.md | ||
test-all.sh |
Simple wasm parser in Rust
See also its sibling at https://github.com/wasdk/wasmparser
Example
use wasmparser::WasmDecoder;
use wasmparser::Parser;
use wasmparser::ParserState;
fn get_name(bytes: &[u8]) -> &str {
str::from_utf8(bytes).ok().unwrap()
}
fn main() {
let ref buf: Vec<u8> = read_wasm_bytes();
let mut parser = Parser::new(buf);
loop {
let state = parser.read();
match *state {
ParserState::BeginWasm { .. } => {
println!("====== Module");
}
ParserState::ExportSectionEntry { field, ref kind, .. } => {
println!(" Export {} {:?}", get_name(field), kind);
}
ParserState::ImportSectionEntry { module, field, .. } => {
println!(" Import {}::{}", get_name(module), get_name(field))
}
ParserState::EndWasm => break,
_ => ( /* println!(" Other {:?}", state) */ )
}
}
}
Fuzzing
To fuzz test wasmparser.rs, switch to a nightly Rust compiler and install cargo-fuzz:
cargo install cargo-fuzz
Then, from the root of the repository, run:
cargo fuzz run parse
If you want to use files as seeds for the fuzzer, add them to fuzz/corpus/parse/
and restart cargo-fuzz.