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libs2eplugins: optionally create test cases when forking states #20

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merged 1 commit into from
Jul 7, 2020
Merged

libs2eplugins: optionally create test cases when forking states #20

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16 changes: 16 additions & 0 deletions libs2eplugins/src/s2e/Plugins/ExecutionTracers/TestCaseGenerator.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -110,9 +110,16 @@ void TestCaseGenerator::initialize() {
void TestCaseGenerator::enable() {
ConfigFile *cfg = s2e()->getConfig();

bool tcOnFork = cfg->getBool(getConfigKey() + ".generateOnStateFork", false);
bool tcOnKill = cfg->getBool(getConfigKey() + ".generateOnStateKill", true);
bool tcOnSegfault = cfg->getBool(getConfigKey() + ".generateOnSegfault", true);

if (tcOnFork) {
m_stateForkConnection.disconnect();
m_stateForkConnection =
s2e()->getCorePlugin()->onStateFork.connect(sigc::mem_fun(*this, &TestCaseGenerator::onStateFork));
}

if (tcOnKill) {
m_stateKillConnection.disconnect();
m_stateKillConnection =
Expand Down Expand Up @@ -142,6 +149,7 @@ void TestCaseGenerator::enable() {
}

void TestCaseGenerator::disable() {
m_stateForkConnection.disconnect();
m_stateKillConnection.disconnect();
m_linuxSegFaultConnection.disconnect();
m_windowsKernelCrashConnection.disconnect();
Expand All @@ -162,6 +170,14 @@ void TestCaseGenerator::onSegFault(S2EExecutionState *state, uint64_t pid, uint6
generateTestCases(state, ss.str(), TC_FILE);
}

void TestCaseGenerator::onStateFork(S2EExecutionState *state, const std::vector<S2EExecutionState *> &newStates,
const std::vector<klee::ref<klee::Expr>> &newConditions) {
for (auto *newState : newStates) {
if (newState != state)
generateTestCases(newState, "fork", TC_FILE);
}
}

void TestCaseGenerator::onStateKill(S2EExecutionState *state) {
generateTestCases(state, "kill", TC_LOG | TC_TRACE | TC_FILE);
}
Expand Down
3 changes: 3 additions & 0 deletions libs2eplugins/src/s2e/Plugins/ExecutionTracers/TestCaseGenerator.h
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Original file line number Diff line number Diff line change
Expand Up @@ -245,13 +245,16 @@ class TestCaseGenerator : public Plugin, public IPluginInvoker {
const ConcreteFileTemplates &getTemplates(S2EExecutionState *state) const;

private:
sigc::connection m_stateForkConnection;
sigc::connection m_stateKillConnection;
sigc::connection m_linuxSegFaultConnection;
sigc::connection m_windowsUserCrashConnection;
sigc::connection m_windowsKernelCrashConnection;

ExecutionTracer *m_tracer;

void onStateFork(S2EExecutionState *state, const std::vector<S2EExecutionState *> &newStates,
const std::vector<klee::ref<klee::Expr>> &newConditions);
void onStateKill(S2EExecutionState *state);
void onSegFault(S2EExecutionState *state, uint64_t pid, uint64_t pc);
void onWindowsUserCrash(S2EExecutionState *state, const WindowsUserModeCrash &desc);
Expand Down