libc_func_matchers Namespace Reference

Functions
static StringRef	matchLibcName (StringRef Name)
static StringRef	matchLibcNameOrBuiltinChk (StringRef Name)
static StringRef	matchName (StringRef FunName, bool isBuiltin)
static bool	hasUnsafeFormatOrSArg (ASTContext &Ctx, const CallExpr *Call, const Expr *&UnsafeArg, const unsigned FmtIdx, std::optional< const unsigned > FmtArgIdx=std::nullopt, bool isKprintf=false)
static bool	isPredefinedUnsafeLibcFunc (const FunctionDecl &Node)
static bool	isUnsafeMemset (const CallExpr &Node, ASTContext &Ctx)
static bool	isUnsafeVaListPrintfFunc (const FunctionDecl &Node)
static bool	isUnsafeSprintfFunc (const FunctionDecl &Node)
static bool	isNormalPrintfFunc (const FunctionDecl &Node)
static bool	hasUnsafePrintfStringArg (const CallExpr &Node, ASTContext &Ctx, MatchResult &Result, llvm::StringRef Tag)
static bool	hasUnsafeSnprintfBuffer (const CallExpr &Node, ASTContext &Ctx)

Function Documentation

hasUnsafeFormatOrSArg()

bool libc_func_matchers::hasUnsafeFormatOrSArg ( ASTContext & Ctx, const CallExpr * Call, const Expr *& UnsafeArg, const unsigned FmtIdx, std::optional< const unsigned > FmtArgIdx = std::nullopt, bool isKprintf = false )

static

Definition at line 889 of file UnsafeBufferUsage.cpp.

References LengthModifier::AsWideChar, clang::Call, clang::IntegerLiteral::Create(), clang::analyze_format_string::FormatSpecifier::getArgIndex(), clang::analyze_printf::OptionalAmount::getArgIndex(), clang::analyze_printf::OptionalAmount::getConstantAmount(), clang::analyze_printf::PrintfSpecifier::getConversionSpecifier(), clang::analyze_printf::OptionalAmount::getHowSpecified(), clang::analyze_format_string::ConversionSpecifier::getKind(), LengthModifier::getKind(), clang::ASTContext::getLangOpts(), clang::analyze_format_string::FormatSpecifier::getLengthModifier(), clang::analyze_printf::PrintfSpecifier::getPrecision(), clang::ASTContext::getSizeType(), clang::ASTContext::getTargetInfo(), clang::Expr::getType(), clang::ASTContext::getTypeSize(), clang::analyze_printf::OptionalAmount::hasDataArgument(), clang::Expr::IgnoreParenImpCasts(), isNullTermPointer(), isPtrBufferSafe(), clang::analyze_format_string::ParsePrintfString(), and clang::analyze_format_string::ConversionSpecifier::sArg.

Referenced by hasUnsafePrintfStringArg().

hasUnsafePrintfStringArg()

bool libc_func_matchers::hasUnsafePrintfStringArg ( const CallExpr & Node, ASTContext & Ctx, MatchResult & Result, llvm::StringRef Tag )

static

Definition at line 1223 of file UnsafeBufferUsage.cpp.

References clang::CallExpr::arguments(), clang::Type::castAs(), clang::DynTypedNode::create(), clang::QualType::getCanonicalType(), clang::CallExpr::getDirectCallee(), clang::ASTContext::getFILEType(), clang::NamedDecl::getIdentifier(), clang::FunctionDecl::getNumParams(), clang::FunctionDecl::getParamDecl(), getPointeeType(), clang::ValueDecl::getType(), hasUnsafeFormatOrSArg(), hasUnsafePrintfStringArg(), clang::QualType::isConstQualified(), clang::Type::isIntegerType(), clang::QualType::isNull(), isNullTermPointer(), and clang::Type::isPointerType().

Referenced by hasUnsafePrintfStringArg().

hasUnsafeSnprintfBuffer()

bool libc_func_matchers::hasUnsafeSnprintfBuffer ( const CallExpr & Node, ASTContext & Ctx )

static

Definition at line 1299 of file UnsafeBufferUsage.cpp.

References clang::Type::castAs(), clang::CallExpr::getArg(), clang::CallExpr::getDirectCallee(), clang::FunctionDecl::getNumParams(), clang::FunctionDecl::getParamDecl(), getPointeeType(), clang::Expr::getType(), clang::ValueDecl::getType(), hasUnsafeSnprintfBuffer(), clang::Type::isAnyCharacterType(), clang::QualType::isConstQualified(), clang::Type::isPointerType(), and isPtrBufferSafe().

Referenced by hasUnsafeSnprintfBuffer().

isNormalPrintfFunc()

bool libc_func_matchers::isNormalPrintfFunc ( const FunctionDecl & Node )

static

Definition at line 1200 of file UnsafeBufferUsage.cpp.

References clang::FunctionDecl::getBuiltinID(), clang::NamedDecl::getIdentifier(), isNormalPrintfFunc(), and matchName().

Referenced by isNormalPrintfFunc().

isPredefinedUnsafeLibcFunc()

bool libc_func_matchers::isPredefinedUnsafeLibcFunc ( const FunctionDecl & Node )

static

Definition at line 1034 of file UnsafeBufferUsage.cpp.

References clang::FunctionDecl::getBuiltinID(), clang::NamedDecl::getIdentifier(), isPredefinedUnsafeLibcFunc(), and matchName().

Referenced by isPredefinedUnsafeLibcFunc().

isUnsafeMemset()

bool libc_func_matchers::isUnsafeMemset ( const CallExpr & Node, ASTContext & Ctx )

static

Definition at line 1136 of file UnsafeBufferUsage.cpp.

References clang::CallExpr::getArg(), clang::FunctionDecl::getBuiltinID(), clang::CallExpr::getDirectCallee(), clang::NamedDecl::getIdentifier(), clang::IdentifierInfo::getName(), clang::FunctionDecl::getNumParams(), getSubExprInAddressOfExpr(), getSubExprInSizeOfExpr(), isUnsafeMemset(), and matchName().

Referenced by isUnsafeMemset().

isUnsafeSprintfFunc()

bool libc_func_matchers::isUnsafeSprintfFunc ( const FunctionDecl & Node )

static

Definition at line 1186 of file UnsafeBufferUsage.cpp.

References clang::FunctionDecl::getBuiltinID(), clang::NamedDecl::getIdentifier(), isUnsafeSprintfFunc(), and matchName().

Referenced by isUnsafeSprintfFunc().

isUnsafeVaListPrintfFunc()

bool libc_func_matchers::isUnsafeVaListPrintfFunc ( const FunctionDecl & Node )

static

Definition at line 1173 of file UnsafeBufferUsage.cpp.

References clang::FunctionDecl::getBuiltinID(), clang::NamedDecl::getIdentifier(), isUnsafeVaListPrintfFunc(), and matchName().

Referenced by isUnsafeVaListPrintfFunc().

matchLibcName()

StringRef libc_func_matchers::matchLibcName ( StringRef Name )

static

Definition at line 850 of file UnsafeBufferUsage.cpp.

Referenced by matchLibcNameOrBuiltinChk(), and matchName().

matchLibcNameOrBuiltinChk()

StringRef libc_func_matchers::matchLibcNameOrBuiltinChk ( StringRef Name )

static

Definition at line 858 of file UnsafeBufferUsage.cpp.

References matchLibcName().

Referenced by matchName().

matchName()

StringRef libc_func_matchers::matchName ( StringRef FunName, bool isBuiltin )

static

Definition at line 865 of file UnsafeBufferUsage.cpp.

References matchLibcName(), and matchLibcNameOrBuiltinChk().

Referenced by isNormalPrintfFunc(), isPredefinedUnsafeLibcFunc(), isUnsafeMemset(), isUnsafeSprintfFunc(), and isUnsafeVaListPrintfFunc().