1 //===--- ProperlySeededRandomGeneratorCheck.h - clang-tidy-------*- C++ -*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CERT_PROPERLY_SEEDED_RANDOM_GENERATOR_H 10 #define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CERT_PROPERLY_SEEDED_RANDOM_GENERATOR_H 11 12 #include "../ClangTidyCheck.h" 13 #include <string> 14 15 namespace clang::tidy::cert { 16 17 /// Random number generator must be seeded properly. 18 /// 19 /// A random number generator initialized with default value or a 20 /// constant expression is a security vulnerability. 21 /// 22 /// For the user-facing documentation see: 23 /// http://clang.llvm.org/extra/clang-tidy/checks/cert/msc51-cpp.html 24 class ProperlySeededRandomGeneratorCheck : public ClangTidyCheck { 25 public: 26 ProperlySeededRandomGeneratorCheck(StringRef Name, ClangTidyContext *Context); 27 void storeOptions(ClangTidyOptions::OptionMap &Opts) override; 28 void registerMatchers(ast_matchers::MatchFinder *Finder) override; 29 void check(const ast_matchers::MatchFinder::MatchResult &Result) override; 30 31 private: 32 template <class T> 33 void checkSeed(const ast_matchers::MatchFinder::MatchResult &Result, 34 const T *Func); 35 36 std::string RawDisallowedSeedTypes; 37 SmallVector<StringRef, 5> DisallowedSeedTypes; 38 }; 39 40 } // namespace clang::tidy::cert 41 42 #endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CERT_PROPERLY_SEEDED_RANDOM_GENERATOR_H 43