/* * Cppcheck - A tool for static C/C++ code analysis * Copyright (C) 2007-2013 Daniel Marjamäki and Cppcheck team. * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include "tokenize.h" #include "checknonreentrantfunctions.h" #include "testsuite.h" #include <sstream> extern std::ostringstream errout; class TestNonReentrantFunctions : public TestFixture { public: TestNonReentrantFunctions() : TestFixture("TestNonReentrantFunctions") { } private: void run() { TEST_CASE(test_crypt); TEST_CASE(test_namespace_handling); } void check(const char code[]) { // Clear the error buffer.. errout.str(""); Settings settings; settings.standards.posix = true; settings.addEnabled("portability"); // Tokenize.. Tokenizer tokenizer(&settings, this); std::istringstream istr(code); tokenizer.tokenize(istr, "test.cpp"); tokenizer.simplifyTokenList(); // Check for non reentrant functions.. CheckNonReentrantFunctions checkNonReentrantFunctions(&tokenizer, &settings, this); checkNonReentrantFunctions.nonReentrantFunctions(); } void test_crypt() { check("void f(char *pwd)\n" "{\n" " char *cpwd;" " crypt(pwd, cpwd);\n" "}"); ASSERT_EQUALS("[test.cpp:3]: (portability) Non reentrant function 'crypt' called. For threadsafe applications it is recommended to use the reentrant replacement function 'crypt_r'.\n", errout.str()); check("void f()\n" "{\n" " char *pwd = getpass(\"Password:\");" " char *cpwd;" " crypt(pwd, cpwd);\n" "}"); ASSERT_EQUALS("[test.cpp:3]: (portability) Non reentrant function 'crypt' called. For threadsafe applications it is recommended to use the reentrant replacement function 'crypt_r'.\n", errout.str()); check("int f()\n" "{\n" " int crypt = 0;" " return crypt;\n" "}"); ASSERT_EQUALS("", errout.str()); } void test_namespace_handling() { check("int f()\n" "{\n" " time_t t = 0;" " std::localtime(&t);\n" "}"); ASSERT_EQUALS("[test.cpp:3]: (portability) Non reentrant function 'localtime' called. For threadsafe applications it is recommended to use the reentrant replacement function 'localtime_r'.\n", errout.str()); // Passed as function argument check("int f()\n" "{\n" " printf(\"Magic guess: %d\n\", getpwent());\n" "}"); ASSERT_EQUALS("[test.cpp:3]: (portability) Non reentrant function 'getpwent' called. For threadsafe applications it is recommended to use the reentrant replacement function 'getpwent_r'.\n", errout.str()); // Pass return value check("int f()\n" "{\n" " time_t t = 0;" " struct tm *foo = localtime(&t);\n" "}"); ASSERT_EQUALS("[test.cpp:3]: (portability) Non reentrant function 'localtime' called. For threadsafe applications it is recommended to use the reentrant replacement function 'localtime_r'.\n", errout.str()); // Access via global namespace check("int f()\n" "{\n" " ::getpwent();\n" "}"); ASSERT_EQUALS("[test.cpp:3]: (portability) Non reentrant function 'getpwent' called. For threadsafe applications it is recommended to use the reentrant replacement function 'getpwent_r'.\n", errout.str()); // Be quiet on function definitions check("int getpwent()\n" "{\n" " return 123;\n" "}"); ASSERT_EQUALS("", errout.str()); // Be quiet on other namespaces check("int f()\n" "{\n" " foobar::getpwent();\n" "}"); ASSERT_EQUALS("", errout.str()); // Be quiet on class member functions check("int f()\n" "{\n" " foobar.getpwent();\n" "}"); ASSERT_EQUALS("", errout.str()); } }; REGISTER_TEST(TestNonReentrantFunctions)