1 //== TaintManager.h - Managing taint --------------------------- -*- C++ -*--=// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file provides APIs for adding, removing, querying symbol taint. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #ifndef LLVM_CLANG_STATICANALYZER_CORE_PATHSENSITIVE_TAINTMANAGER_H 15 #define LLVM_CLANG_STATICANALYZER_CORE_PATHSENSITIVE_TAINTMANAGER_H 16 17 #include "clang/StaticAnalyzer/Core/BugReporter/PathDiagnostic.h" 18 #include "clang/StaticAnalyzer/Core/PathSensitive/ProgramState.h" 19 #include "clang/StaticAnalyzer/Core/PathSensitive/ProgramStateTrait.h" 20 #include "clang/StaticAnalyzer/Core/PathSensitive/TaintTag.h" 21 #include "llvm/ADT/ImmutableMap.h" 22 23 namespace clang { 24 namespace ento { 25 26 /// The GDM component containing the tainted root symbols. We lazily infer the 27 /// taint of the dependent symbols. Currently, this is a map from a symbol to 28 /// tag kind. TODO: Should support multiple tag kinds. 29 // FIXME: This does not use the nice trait macros because it must be accessible 30 // from multiple translation units. 31 struct TaintMap {}; 32 typedef llvm::ImmutableMap<SymbolRef, TaintTagType> TaintMapImpl; 33 template<> struct ProgramStateTrait<TaintMap> 34 : public ProgramStatePartialTrait<TaintMapImpl> { 35 static void *GDMIndex() { static int index = 0; return &index; } 36 }; 37 38 /// The GDM component mapping derived symbols' parent symbols to their 39 /// underlying regions. This is used to efficiently check whether a symbol is 40 /// tainted when it represents a sub-region of a tainted symbol. 41 struct DerivedSymTaint {}; 42 typedef llvm::ImmutableMap<SymbolRef, TaintedSubRegions> DerivedSymTaintImpl; 43 template<> struct ProgramStateTrait<DerivedSymTaint> 44 : public ProgramStatePartialTrait<DerivedSymTaintImpl> { 45 static void *GDMIndex() { static int index; return &index; } 46 }; 47 48 class TaintManager { 49 50 TaintManager() {} 51 }; 52 53 } 54 } 55 56 #endif 57
