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 { 16 namespace tidy { 17 namespace cert { 18 19 /// Random number generator must be seeded properly. 20 /// 21 /// A random number generator initialized with default value or a 22 /// constant expression is a security vulnerability. 23 /// 24 /// For the user-facing documentation see: 25 /// http://clang.llvm.org/extra/clang-tidy/checks/cert-properly-seeded-random-generator.html 26 class ProperlySeededRandomGeneratorCheck : public ClangTidyCheck { 27 public: 28 ProperlySeededRandomGeneratorCheck(StringRef Name, ClangTidyContext *Context); 29 void storeOptions(ClangTidyOptions::OptionMap &Opts) override; 30 void registerMatchers(ast_matchers::MatchFinder *Finder) override; 31 void check(const ast_matchers::MatchFinder::MatchResult &Result) override; 32 33 private: 34 template <class T> 35 void checkSeed(const ast_matchers::MatchFinder::MatchResult &Result, 36 const T *Func); 37 38 std::string RawDisallowedSeedTypes; 39 SmallVector<StringRef, 5> DisallowedSeedTypes; 40 }; 41 42 } // namespace cert 43 } // namespace tidy 44 } // namespace clang 45 46 #endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_CERT_PROPERLY_SEEDED_RANDOM_GENERATOR_H 47