forked from OSchip/llvm-project
63 lines
1.9 KiB
C++
63 lines
1.9 KiB
C++
|
//== TaintTesterChecker.cpp ----------------------------------- -*- C++ -*--=//
|
||
|
|
//
|
||
|
|
// The LLVM Compiler Infrastructure
|
||
|
|
//
|
||
|
|
// This file is distributed under the University of Illinois Open Source
|
||
|
|
// License. See LICENSE.TXT for details.
|
||
|
|
//
|
||
|
|
//===----------------------------------------------------------------------===//
|
||
|
|
//
|
||
|
|
// This checker can be used for testing how taint data is propagated.
|
||
|
|
//
|
||
|
|
//===----------------------------------------------------------------------===//
|
||
|
|
#include "ClangSACheckers.h"
|
||
|
|
#include "clang/StaticAnalyzer/Core/Checker.h"
|
||
|
|
#include "clang/StaticAnalyzer/Core/CheckerManager.h"
|
||
|
|
#include "clang/StaticAnalyzer/Core/PathSensitive/CheckerContext.h"
|
||
|
|
#include "clang/StaticAnalyzer/Core/BugReporter/BugType.h"
|
||
|
|
|
||
|
|
using namespace clang;
|
||
|
|
using namespace ento;
|
||
|
|
|
||
|
|
namespace {
|
||
|
|
class TaintTesterChecker : public Checker< check::PostStmt<Expr> > {
|
||
|
|
|
||
|
|
mutable llvm::OwningPtr<BugType> BT;
|
||
|
|
void initBugType() const;
|
||
|
|
|
||
|
|
/// Given a pointer argument, get the symbol of the value it contains
|
||
|
|
/// (points to).
|
||
|
|
SymbolRef getPointedToSymbol(CheckerContext &C,
|
||
|
|
const Expr* Arg,
|
||
|
|
bool IssueWarning = true) const;
|
||
|
|
|
||
|
|
public:
|
||
|
|
void checkPostStmt(const Expr *E, CheckerContext &C) const;
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
inline void TaintTesterChecker::initBugType() const {
|
||
|
|
if (!BT)
|
||
|
|
BT.reset(new BugType("Tainted data", "General"));
|
||
|
|
}
|
||
|
|
|
||
|
|
void TaintTesterChecker::checkPostStmt(const Expr *E,
|
||
|
|
CheckerContext &C) const {
|
||
|
|
const ProgramState *State = C.getState();
|
||
|
|
if (!State)
|
||
|
|
return;
|
||
|
|
|
||
|
|
if (E && State->isTainted(E)) {
|
||
|
|
if (ExplodedNode *N = C.addTransition()) {
|
||
|
|
initBugType();
|
||
|
|
BugReport *report = new BugReport(*BT, "tainted",N);
|
||
|
|
report->addRange(E->getSourceRange());
|
||
|
|
C.EmitReport(report);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void ento::registerTaintTesterChecker(CheckerManager &mgr) {
|
||
|
|
mgr.registerChecker<TaintTesterChecker>();
|
||
|
|
}
|