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#[macro_use] pub mod util; pub mod disassemble; pub mod engine; pub mod path_exploration; pub mod solver; use anyhow::Context; pub use engine::{ BugFinder, RaritySimulation, RaritySimulationBug, RaritySimulationError, RaritySimulationOptions, SymbolicExecutionBug, SymbolicExecutionEngine, SymbolicExecutionError, SymbolicExecutionOptions, }; use riscu::{load_object_file, Program}; pub use solver::{SmtGenerationOptions, SmtType}; use std::{fs::File, io::Write, path::Path}; use thiserror::Error; #[derive(Debug, Error)] pub enum MonsterError { #[error("I/O error")] IoError(anyhow::Error), #[error("preprocessing failed with error")] Preprocessing(anyhow::Error), #[error("symbolic execution stopped with error, {0}")] SymbolicExecution(SymbolicExecutionError), #[error("rarity simulation stopped with error")] RaritySimulation(RaritySimulationError), } pub fn load_elf<P>(input: P) -> Result<Program, MonsterError> where P: AsRef<Path>, { load_object_file(input).map_err(|e| { MonsterError::IoError(anyhow::Error::new(e).context("Failed to load object file")) }) } pub fn symbolically_execute( program: &Program, ) -> Result<Option<SymbolicExecutionBug>, MonsterError> { let options = SymbolicExecutionOptions::default(); let solver = solver::MonsterSolver::default(); let strategy = path_exploration::ShortestPathStrategy::compute_for(program) .map_err(MonsterError::Preprocessing)?; symbolically_execute_with(program, &options, &strategy, &solver) } pub fn symbollically_execute_elf<P: AsRef<Path>>( input: P, ) -> Result<Option<SymbolicExecutionBug>, MonsterError> { let program = load_elf(input)?; symbolically_execute(&program) } pub fn symbolically_execute_with<Solver, Strategy>( program: &Program, options: &SymbolicExecutionOptions, strategy: &Strategy, solver: &Solver, ) -> Result<Option<SymbolicExecutionBug>, MonsterError> where Strategy: path_exploration::ExplorationStrategy, Solver: solver::Solver, { SymbolicExecutionEngine::new(&options, strategy, solver) .search_for_bugs(&program) .map_err(MonsterError::SymbolicExecution) } pub fn symbolically_execute_elf_with<P, Solver, Strategy>( input: P, options: &SymbolicExecutionOptions, strategy: &Strategy, solver: &Solver, ) -> Result<Option<SymbolicExecutionBug>, MonsterError> where P: AsRef<Path>, Strategy: path_exploration::ExplorationStrategy, Solver: solver::Solver, { let program = load_elf(input)?; symbolically_execute_with(&program, options, strategy, solver) } pub fn generate_smt<Strategy, W, P>( input: P, write: W, options: &SmtGenerationOptions, strategy: &Strategy, ) -> Result<Option<SymbolicExecutionBug>, MonsterError> where W: Write + Send + 'static, Strategy: path_exploration::ExplorationStrategy, P: AsRef<Path>, { let sym_options = SymbolicExecutionOptions { memory_size: options.memory_size, max_exection_depth: options.max_execution_depth, optimistically_prune_search_space: false, }; match options.smt_type { SmtType::Generic => { let solver = solver::SmtWriter::new::<W>(write) .context("failed to generate SMT file writer backend") .map_err(MonsterError::Preprocessing)?; symbolically_execute_elf_with(input, &sym_options, strategy, &solver) } #[cfg(feature = "boolector")] SmtType::Boolector => { let solver = solver::SmtWriter::new_for_solver::<solver::Boolector, W>(write) .context("failed to generate SMT file writer backend") .map_err(MonsterError::Preprocessing)?; symbolically_execute_elf_with(input, &sym_options, strategy, &solver) } #[cfg(feature = "z3")] SmtType::Z3 => { let solver = solver::SmtWriter::new_for_solver::<solver::Z3, W>(write) .context("failed to generate SMT file writer backend") .map_err(MonsterError::Preprocessing)?; symbolically_execute_elf_with(input, &sym_options, strategy, &solver) } } } pub fn generate_smt_to_file<Strategy, P>( input: P, output: P, options: &SmtGenerationOptions, strategy: &Strategy, ) -> Result<Option<SymbolicExecutionBug>, MonsterError> where Strategy: path_exploration::ExplorationStrategy, P: AsRef<Path> + Send, { let file = File::create(output) .context("failed to generate SMT file writer") .map_err(MonsterError::IoError)?; generate_smt(input, file, options, strategy) } pub fn rarity_simulate(program: &Program) -> Result<Option<RaritySimulationBug>, MonsterError> { rarity_simulate_with(program, &RaritySimulationOptions::default()) } pub fn rarity_simulate_elf<P: AsRef<Path>>( input: P, ) -> Result<Option<RaritySimulationBug>, MonsterError> { let program = load_elf(input)?; rarity_simulate(&program) } pub fn rarity_simulate_with( program: &Program, options: &RaritySimulationOptions, ) -> Result<Option<RaritySimulationBug>, MonsterError> { RaritySimulation::new(&options) .search_for_bugs(program) .map_err(MonsterError::RaritySimulation) } pub fn rarity_simulate_elf_with<P>( input: P, options: &RaritySimulationOptions, ) -> Result<Option<RaritySimulationBug>, MonsterError> where P: AsRef<Path>, { let program = load_elf(input)?; rarity_simulate_with(&program, options) }