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with workspaces +[workspace] +members = ["."] + +[profile.release] +debug = 1 + +[[bin]] +name = "fuzz_target_record_coverage" +path = "fuzz_targets/fuzz_target_record_coverage.rs" +test = false +doc = false diff --git a/src/agent/coverage/fuzz/fuzz_targets/fuzz_target_record_coverage.rs b/src/agent/coverage/fuzz/fuzz_targets/fuzz_target_record_coverage.rs new file mode 100644 index 0000000000..c097a1f279 --- /dev/null +++ b/src/agent/coverage/fuzz/fuzz_targets/fuzz_target_record_coverage.rs @@ -0,0 +1,51 @@ +#![no_main] + +use libfuzzer_sys::fuzz_target; +use std::env; +use std::fs; +use std::io::Write; +use std::process::Command; +use std::sync::Arc; +use std::time::Duration; + +use tempfile::NamedTempFile; + +use coverage::allowlist::AllowList; +use coverage::binary::BinaryCoverage; +use coverage::record::CoverageRecorder; + +use debuggable_module::loader::Loader; + +const INPUT_MARKER: &str = "@@"; + +fuzz_target!(|data: &[u8]| { + if data.len() == 0 { + return; + } + + // Write mutated bytes to a file + let mut file = NamedTempFile::new_in(env::current_dir().unwrap()).unwrap(); + file.write_all(data); + let path = String::from(file.path().to_str().unwrap()); + + // Make sure the file is executable + Command::new("chmod").args(["+wrx", &path]).spawn().unwrap().wait(); + file.keep().unwrap(); + + let timeout = Duration::from_secs(5); + + let allowlist = AllowList::default(); + + let _coverage = BinaryCoverage::default(); + let loader = Arc::new(Loader::new()); + + let cmd = Command::new(&path); + + let _recorded = CoverageRecorder::new(cmd) + .module_allowlist(allowlist.clone()) + .loader(loader) + .timeout(timeout) + .record(); + + fs::remove_file(path); +});