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-rw-r--r--lib/Fuzzer/FuzzerDriver.cpp168
1 files changed, 107 insertions, 61 deletions
diff --git a/lib/Fuzzer/FuzzerDriver.cpp b/lib/Fuzzer/FuzzerDriver.cpp
index 0ee08e1d1624..dc5f8babbfe6 100644
--- a/lib/Fuzzer/FuzzerDriver.cpp
+++ b/lib/Fuzzer/FuzzerDriver.cpp
@@ -32,35 +32,42 @@ struct FlagDescription {
int Default;
int *IntFlag;
const char **StrFlag;
+ unsigned int *UIntFlag;
};
struct {
#define FUZZER_FLAG_INT(Name, Default, Description) int Name;
+#define FUZZER_FLAG_UNSIGNED(Name, Default, Description) unsigned int Name;
#define FUZZER_FLAG_STRING(Name, Description) const char *Name;
#include "FuzzerFlags.def"
#undef FUZZER_FLAG_INT
+#undef FUZZER_FLAG_UNSIGNED
#undef FUZZER_FLAG_STRING
} Flags;
-static FlagDescription FlagDescriptions [] {
+static const FlagDescription FlagDescriptions [] {
#define FUZZER_FLAG_INT(Name, Default, Description) \
- { #Name, Description, Default, &Flags.Name, nullptr},
+ {#Name, Description, Default, &Flags.Name, nullptr, nullptr},
+#define FUZZER_FLAG_UNSIGNED(Name, Default, Description) \
+ {#Name, Description, static_cast<int>(Default), \
+ nullptr, nullptr, &Flags.Name},
#define FUZZER_FLAG_STRING(Name, Description) \
- { #Name, Description, 0, nullptr, &Flags.Name },
+ {#Name, Description, 0, nullptr, &Flags.Name, nullptr},
#include "FuzzerFlags.def"
#undef FUZZER_FLAG_INT
+#undef FUZZER_FLAG_UNSIGNED
#undef FUZZER_FLAG_STRING
};
static const size_t kNumFlags =
sizeof(FlagDescriptions) / sizeof(FlagDescriptions[0]);
-static std::vector<std::string> inputs;
-static const char *ProgName;
+static std::vector<std::string> *Inputs;
+static std::string *ProgName;
static void PrintHelp() {
Printf("Usage: %s [-flag1=val1 [-flag2=val2 ...] ] [dir1 [dir2 ...] ]\n",
- ProgName);
+ ProgName->c_str());
Printf("\nFlags: (strictly in form -flag=value)\n");
size_t MaxFlagLen = 0;
for (size_t F = 0; F < kNumFlags; F++)
@@ -106,6 +113,12 @@ static bool ParseOneFlag(const char *Param) {
if (Flags.verbosity >= 2)
Printf("Flag: %s %d\n", Name, Val);;
return true;
+ } else if (FlagDescriptions[F].UIntFlag) {
+ unsigned int Val = std::stoul(Str);
+ *FlagDescriptions[F].UIntFlag = Val;
+ if (Flags.verbosity >= 2)
+ Printf("Flag: %s %u\n", Name, Val);
+ return true;
} else if (FlagDescriptions[F].StrFlag) {
*FlagDescriptions[F].StrFlag = Str;
if (Flags.verbosity >= 2)
@@ -119,16 +132,20 @@ static bool ParseOneFlag(const char *Param) {
}
// We don't use any library to minimize dependencies.
-static void ParseFlags(int argc, char **argv) {
+static void ParseFlags(const std::vector<std::string> &Args) {
for (size_t F = 0; F < kNumFlags; F++) {
if (FlagDescriptions[F].IntFlag)
*FlagDescriptions[F].IntFlag = FlagDescriptions[F].Default;
+ if (FlagDescriptions[F].UIntFlag)
+ *FlagDescriptions[F].UIntFlag =
+ static_cast<unsigned int>(FlagDescriptions[F].Default);
if (FlagDescriptions[F].StrFlag)
*FlagDescriptions[F].StrFlag = nullptr;
}
- for (int A = 1; A < argc; A++) {
- if (ParseOneFlag(argv[A])) continue;
- inputs.push_back(argv[A]);
+ Inputs = new std::vector<std::string>;
+ for (size_t A = 1; A < Args.size(); A++) {
+ if (ParseOneFlag(Args[A].c_str())) continue;
+ Inputs->push_back(Args[A]);
}
}
@@ -151,7 +168,7 @@ static void WorkerThread(const std::string &Cmd, std::atomic<int> *Counter,
std::string ToRun = Cmd + " > " + Log + " 2>&1\n";
if (Flags.verbosity)
Printf("%s", ToRun.c_str());
- int ExitCode = system(ToRun.c_str());
+ int ExitCode = ExecuteCommand(ToRun.c_str());
if (ExitCode != 0)
*HasErrors = true;
std::lock_guard<std::mutex> Lock(Mu);
@@ -161,15 +178,15 @@ static void WorkerThread(const std::string &Cmd, std::atomic<int> *Counter,
}
}
-static int RunInMultipleProcesses(int argc, char **argv, int NumWorkers,
- int NumJobs) {
+static int RunInMultipleProcesses(const std::vector<std::string> &Args,
+ int NumWorkers, int NumJobs) {
std::atomic<int> Counter(0);
std::atomic<bool> HasErrors(false);
std::string Cmd;
- for (int i = 0; i < argc; i++) {
- if (FlagValue(argv[i], "jobs") || FlagValue(argv[i], "workers")) continue;
- Cmd += argv[i];
- Cmd += " ";
+ for (auto &S : Args) {
+ if (FlagValue(S.c_str(), "jobs") || FlagValue(S.c_str(), "workers"))
+ continue;
+ Cmd += S + " ";
}
std::vector<std::thread> V;
std::thread Pulse(PulseThread);
@@ -181,36 +198,37 @@ static int RunInMultipleProcesses(int argc, char **argv, int NumWorkers,
return HasErrors ? 1 : 0;
}
-std::vector<std::string> ReadTokensFile(const char *TokensFilePath) {
- if (!TokensFilePath) return {};
- std::string TokensFileContents = FileToString(TokensFilePath);
- std::istringstream ISS(TokensFileContents);
- std::vector<std::string> Res = {std::istream_iterator<std::string>{ISS},
- std::istream_iterator<std::string>{}};
- Res.push_back(" ");
- Res.push_back("\t");
- Res.push_back("\n");
- return Res;
-}
-
-int ApplyTokens(const Fuzzer &F, const char *InputFilePath) {
+int RunOneTest(Fuzzer *F, const char *InputFilePath) {
Unit U = FileToVector(InputFilePath);
- auto T = F.SubstituteTokens(U);
- T.push_back(0);
- Printf("%s", T.data());
+ Unit PreciseSizedU(U);
+ assert(PreciseSizedU.size() == PreciseSizedU.capacity());
+ F->ExecuteCallback(PreciseSizedU);
return 0;
}
int FuzzerDriver(int argc, char **argv, UserCallback Callback) {
- SimpleUserSuppliedFuzzer SUSF(Callback);
+ FuzzerRandomLibc Rand(0);
+ SimpleUserSuppliedFuzzer SUSF(&Rand, Callback);
return FuzzerDriver(argc, argv, SUSF);
}
int FuzzerDriver(int argc, char **argv, UserSuppliedFuzzer &USF) {
- using namespace fuzzer;
+ std::vector<std::string> Args(argv, argv + argc);
+ return FuzzerDriver(Args, USF);
+}
+
+int FuzzerDriver(const std::vector<std::string> &Args, UserCallback Callback) {
+ FuzzerRandomLibc Rand(0);
+ SimpleUserSuppliedFuzzer SUSF(&Rand, Callback);
+ return FuzzerDriver(Args, SUSF);
+}
- ProgName = argv[0];
- ParseFlags(argc, argv);
+int FuzzerDriver(const std::vector<std::string> &Args,
+ UserSuppliedFuzzer &USF) {
+ using namespace fuzzer;
+ assert(!Args.empty());
+ ProgName = new std::string(Args[0]);
+ ParseFlags(Args);
if (Flags.help) {
PrintHelp();
return 0;
@@ -223,33 +241,70 @@ int FuzzerDriver(int argc, char **argv, UserSuppliedFuzzer &USF) {
}
if (Flags.workers > 0 && Flags.jobs > 0)
- return RunInMultipleProcesses(argc, argv, Flags.workers, Flags.jobs);
+ return RunInMultipleProcesses(Args, Flags.workers, Flags.jobs);
Fuzzer::FuzzingOptions Options;
Options.Verbosity = Flags.verbosity;
Options.MaxLen = Flags.max_len;
Options.UnitTimeoutSec = Flags.timeout;
+ Options.MaxTotalTimeSec = Flags.max_total_time;
Options.DoCrossOver = Flags.cross_over;
Options.MutateDepth = Flags.mutate_depth;
Options.ExitOnFirst = Flags.exit_on_first;
Options.UseCounters = Flags.use_counters;
+ Options.UseIndirCalls = Flags.use_indir_calls;
Options.UseTraces = Flags.use_traces;
- Options.UseFullCoverageSet = Flags.use_full_coverage_set;
+ Options.ShuffleAtStartUp = Flags.shuffle;
Options.PreferSmallDuringInitialShuffle =
Flags.prefer_small_during_initial_shuffle;
- Options.Tokens = ReadTokensFile(Flags.tokens);
Options.Reload = Flags.reload;
+ Options.OnlyASCII = Flags.only_ascii;
+ Options.TBMDepth = Flags.tbm_depth;
+ Options.TBMWidth = Flags.tbm_width;
+ Options.OutputCSV = Flags.output_csv;
if (Flags.runs >= 0)
Options.MaxNumberOfRuns = Flags.runs;
- if (!inputs.empty())
- Options.OutputCorpus = inputs[0];
+ if (!Inputs->empty())
+ Options.OutputCorpus = (*Inputs)[0];
if (Flags.sync_command)
Options.SyncCommand = Flags.sync_command;
Options.SyncTimeout = Flags.sync_timeout;
+ Options.ReportSlowUnits = Flags.report_slow_units;
+ if (Flags.artifact_prefix)
+ Options.ArtifactPrefix = Flags.artifact_prefix;
+ if (Flags.exact_artifact_path)
+ Options.ExactArtifactPath = Flags.exact_artifact_path;
+ std::vector<Unit> Dictionary;
+ if (Flags.dict)
+ if (!ParseDictionaryFile(FileToString(Flags.dict), &Dictionary))
+ return 1;
+ if (Flags.verbosity > 0 && !Dictionary.empty())
+ Printf("Dictionary: %zd entries\n", Dictionary.size());
+ Options.SaveArtifacts = !Flags.test_single_input;
+
Fuzzer F(USF, Options);
- if (Flags.apply_tokens)
- return ApplyTokens(F, Flags.apply_tokens);
+ for (auto &U: Dictionary)
+ USF.GetMD().AddWordToDictionary(U.data(), U.size());
+
+ // Timer
+ if (Flags.timeout > 0)
+ SetTimer(Flags.timeout / 2 + 1);
+
+ if (Flags.test_single_input) {
+ RunOneTest(&F, Flags.test_single_input);
+ exit(0);
+ }
+
+ if (Flags.save_minimized_corpus) {
+ Printf("The flag -save_minimized_corpus is deprecated; use -merge=1\n");
+ exit(1);
+ }
+
+ if (Flags.merge) {
+ F.Merge(*Inputs);
+ exit(0);
+ }
unsigned Seed = Flags.seed;
// Initialize Seed.
@@ -257,35 +312,26 @@ int FuzzerDriver(int argc, char **argv, UserSuppliedFuzzer &USF) {
Seed = time(0) * 10000 + getpid();
if (Flags.verbosity)
Printf("Seed: %u\n", Seed);
- srand(Seed);
-
- // Timer
- if (Flags.timeout > 0)
- SetTimer(Flags.timeout / 2 + 1);
-
- if (Flags.verbosity >= 2) {
- Printf("Tokens: {");
- for (auto &T : Options.Tokens)
- Printf("%s,", T.c_str());
- Printf("}\n");
- }
+ USF.GetRand().ResetSeed(Seed);
F.RereadOutputCorpus();
- for (auto &inp : inputs)
+ for (auto &inp : *Inputs)
if (inp != Options.OutputCorpus)
F.ReadDir(inp, nullptr);
if (F.CorpusSize() == 0)
F.AddToCorpus(Unit()); // Can't fuzz empty corpus, so add an empty input.
F.ShuffleAndMinimize();
- if (Flags.save_minimized_corpus)
- F.SaveCorpus();
- F.Loop(Flags.iterations < 0 ? INT_MAX : Flags.iterations);
+ if (Flags.drill)
+ F.Drill();
+ else
+ F.Loop();
+
if (Flags.verbosity)
Printf("Done %d runs in %zd second(s)\n", F.getTotalNumberOfRuns(),
F.secondsSinceProcessStartUp());
- return 0;
+ exit(0); // Don't let F destroy itself.
}
} // namespace fuzzer
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