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optimin: add missing cmin options and auto create output dir

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* Includes frida, unicorn modes
* Automatically create the output directory if it does not already exist
This commit is contained in:
Adrian Herrera
2021-07-22 11:19:57 +00:00
parent ea39e6d6e7
commit 99d24d13f1
2 changed files with 24 additions and 12 deletions
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4
utils/optimin/README.md
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@ -32,7 +32,9 @@ Color Options:
General options: General options:
-C - Keep crashing inputs, reject everything else -C - Keep crashing inputs, reject everything else
-Q - Use binary-only instrumentation -O - Use binary-only instrumentation (FRIDA mode)
-Q - Use binary-only instrumentation (QEMU mode)
-U - Use unicorn-based instrumentation (unicorn mode)
-f - Include edge hit counts -f - Include edge hit counts
-i dir - Input directory -i dir - Input directory
-m megs - Memory limit for child process (default=none) -m megs - Memory limit for child process (default=none)

32
utils/optimin/src/OptiMin.cpp
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@ -116,29 +116,38 @@ static const auto StatMsg = [] {
}; };
static cl::opt<std::string> CorpusDir("i", cl::desc("Input directory"), static cl::opt<std::string> CorpusDir("i", cl::desc("Input directory"),
cl::value_desc("dir"), cl::Required); cl::value_desc("dir"), cl::Required);
static cl::opt<std::string> OutputDir("o", cl::desc("Output directory"), static cl::opt<std::string> OutputDir("o", cl::desc("Output directory"),
cl::value_desc("dir"), cl::Required); cl::value_desc("dir"), cl::Required);
static cl::opt<bool> EdgesOnly("f", cl::desc("Include edge hit counts"),
static cl::opt<bool> ShowProgBar("p", cl::desc("Display progress bar"));
static cl::opt<bool> EdgesOnly("f", cl::desc("Include edge hit counts"),
cl::init(true)); cl::init(true));
static cl::opt<bool> ShowProgBar("p", cl::desc("Display progress bar")); static cl::opt<std::string> WeightsFile("w", cl::desc("Weights file"),
static cl::opt<std::string> WeightsFile("w", cl::desc("Weights file"),
cl::value_desc("csv")); cl::value_desc("csv"));
static cl::opt<std::string> TargetProg(cl::Positional, static cl::opt<std::string> TargetProg(cl::Positional,
cl::desc("<target program>"), cl::desc("<target program>"),
cl::Required); cl::Required);
static cl::list<std::string> TargetArgs(cl::ConsumeAfter, static cl::list<std::string> TargetArgs(cl::ConsumeAfter,
cl::desc("[target args...]")); cl::desc("[target args...]"));
static cl::opt<std::string> MemLimit(
static cl::opt<std::string> MemLimit(
"m", cl::desc("Memory limit for child process (default=none)"), "m", cl::desc("Memory limit for child process (default=none)"),
cl::value_desc("megs"), cl::init("none")); cl::value_desc("megs"), cl::init("none"));
static cl::opt<std::string> Timeout( static cl::opt<std::string> Timeout(
"t", cl::desc("Run time limit for child process (default=5000)"), "t", cl::desc("Run time limit for child process (default=5000)"),
cl::value_desc("msec"), cl::init("4000")); cl::value_desc("msec"), cl::init("4000"));
static cl::opt<bool> CrashMode( static cl::opt<bool> CrashMode(
"C", cl::desc("Keep crashing inputs, reject everything else")); "C", cl::desc("Keep crashing inputs, reject everything else"));
static cl::opt<bool> QemuMode("Q", cl::desc("Use binary-only instrumentation")); static cl::opt<bool> FridaMode(
"O", cl::desc("Use binary-only instrumentation (FRIDA mode)"));
static cl::opt<bool> QemuMode(
"Q", cl::desc("Use binary-only instrumentation (QEMU mode)"));
static cl::opt<bool> UnicornMode(
"U", cl::desc("Use unicorn-based instrumentation (unicorn mode)"));
} // anonymous namespace } // anonymous namespace
@ -184,7 +193,6 @@ static void GetWeights(const MemoryBuffer &MB, WeightsMap &Weights) {
// Prepare afl-showmap arguments // Prepare afl-showmap arguments
SmallVector<StringRef, 12> AFLShowmapArgs{ SmallVector<StringRef, 12> AFLShowmapArgs{
AFLShowmapPath, "-m", MemLimit, "-t", Timeout, "-q", "-o", OutputPath}; AFLShowmapPath, "-m", MemLimit, "-t", Timeout, "-q", "-o", OutputPath};
if (TargetArgsHasAtAt) if (TargetArgsHasAtAt)
@ -192,8 +200,9 @@ static void GetWeights(const MemoryBuffer &MB, WeightsMap &Weights) {
else else
Redirects[/* stdin */ 0] = Seed; Redirects[/* stdin */ 0] = Seed;
if (FridaMode) AFLShowmapArgs.push_back("-O");
if (QemuMode) AFLShowmapArgs.push_back("-Q"); if (QemuMode) AFLShowmapArgs.push_back("-Q");
if (CrashMode) AFLShowmapArgs.push_back("-C"); if (UnicornMode) AFLShowmapArgs.push_back("-U");
AFLShowmapArgs.append({"--", TargetProg}); AFLShowmapArgs.append({"--", TargetProg});
AFLShowmapArgs.append(TargetArgs.begin(), TargetArgs.end()); AFLShowmapArgs.append(TargetArgs.begin(), TargetArgs.end());
@ -269,9 +278,10 @@ int main(int argc, char *argv[]) {
cl::ParseCommandLineOptions(argc, argv, "Optimal corpus minimizer"); cl::ParseCommandLineOptions(argc, argv, "Optimal corpus minimizer");
if (!sys::fs::is_directory(OutputDir)) { if (EC = sys::fs::create_directory(OutputDir)) {
ErrMsg() << "Invalid output directory `" << OutputDir << "`\n"; ErrMsg() << "Invalid output directory `" << OutputDir
<< "`: " << EC.message() << '\n';
return 1; return 1;
} }