| 1 | //===--- CloexecAcceptCheck.cpp - clang-tidy-------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | #include "CloexecAcceptCheck.h" |
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| 10 | #include "clang/AST/ASTContext.h" |
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| 11 | #include "clang/ASTMatchers/ASTMatchFinder.h" |
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| 12 | |
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| 13 | using namespace clang::ast_matchers; |
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| 14 | |
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| 15 | namespace clang::tidy::android { |
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| 16 | |
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| 17 | void CloexecAcceptCheck::registerMatchers(MatchFinder *Finder) { |
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| 18 | auto SockAddrPointerType = |
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| 19 | hasType(InnerMatcher: pointsTo(InnerMatcher: recordDecl(isStruct(), hasName(Name: "sockaddr" )))); |
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| 20 | auto SockLenPointerType = hasType(InnerMatcher: pointsTo(InnerMatcher: namedDecl(hasName(Name: "socklen_t" )))); |
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| 21 | |
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| 22 | registerMatchersImpl(Finder, |
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| 23 | Function: functionDecl(returns(InnerMatcher: isInteger()), hasName(Name: "accept" ), |
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| 24 | hasParameter(N: 0, InnerMatcher: hasType(InnerMatcher: isInteger())), |
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| 25 | hasParameter(N: 1, InnerMatcher: SockAddrPointerType), |
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| 26 | hasParameter(N: 2, InnerMatcher: SockLenPointerType))); |
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| 27 | } |
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| 28 | |
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| 29 | void CloexecAcceptCheck::check(const MatchFinder::MatchResult &Result) { |
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| 30 | std::string ReplacementText = |
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| 31 | (Twine("accept4(" ) + getSpellingArg(Result, N: 0) + ", " + |
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| 32 | getSpellingArg(Result, N: 1) + ", " + getSpellingArg(Result, N: 2) + |
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| 33 | ", SOCK_CLOEXEC)" ) |
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| 34 | .str(); |
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| 35 | |
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| 36 | replaceFunc( |
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| 37 | Result, |
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| 38 | WarningMsg: "prefer accept4() to accept() because accept4() allows SOCK_CLOEXEC" , |
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| 39 | FixMsg: ReplacementText); |
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| 40 | } |
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| 41 | |
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| 42 | } // namespace clang::tidy::android |
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| 43 | |
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