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/*
* Cppcheck - A tool for static C/C++ code analysis
* Copyright (C) 2007-2010 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 "checkobsoletefunctions.h"
#include "testsuite.h"
#include <sstream>
extern std::ostringstream errout;
class TestObsoleteFunctions : public TestFixture
{
public:
TestObsoleteFunctions() : TestFixture("TestObsoleteFunctions")
{ }
private:
void run()
{
TEST_CASE(testbsd_signal);
TEST_CASE(testgethostbyname);
TEST_CASE(testgethostbyaddr);
TEST_CASE(testusleep);
TEST_CASE(testindex);
TEST_CASE(testrindex);
// no false positives for variables
TEST_CASE(testvar);
// dangerous function
TEST_CASE(testgets);
}
void check(const char code[])
{
// Clear the error buffer..
errout.str("");
Settings settings;
settings._checkCodingStyle = true;
settings.inconclusive = true;
// Tokenize..
Tokenizer tokenizer(&settings, this);
std::istringstream istr(code);
tokenizer.tokenize(istr, "test.cpp");
tokenizer.simplifyTokenList();
// Assign variable ids
tokenizer.setVarId();
// Fill function list
tokenizer.fillFunctionList();
// Check for obsolete functions..
CheckObsoleteFunctions checkObsoleteFunctions(&tokenizer, &settings, this);
checkObsoleteFunctions.obsoleteFunctions();
}
void testbsd_signal()
{
check("void f()\n"
"{\n"
" bsd_signal(SIGABRT, SIG_IGN);\n"
"}\n");
ASSERT_EQUALS("[test.cpp:3]: (style) Found obsolete function 'bsd_signal'. It is recommended that new applications use the 'sigaction' function\n", errout.str());
check("int f()\n"
"{\n"
" int bsd_signal(0);\n"
" return bsd_signal;\n"
"}\n");
ASSERT_EQUALS("", errout.str());
}
void testgethostbyname()
{
check("void f()\n"
"{\n"
" struct hostent *hp;\n"
" if(!hp = gethostbyname('127.0.0.1')) {\n"
" exit(1);\n"
" }\n"
"}\n");
ASSERT_EQUALS("[test.cpp:4]: (style) Found obsolete function 'gethostbyname'. It is recommended that new applications use the 'getnameinfo' function\n", errout.str());
}
void testgethostbyaddr()
{
check("void f()\n"
"{\n"
" long addr;\n"
" addr = inet_addr('127.0.0.1');\n"
" if(!hp = gethostbyaddr((char *) &addr, sizeof(addr), AF_INET)) {\n"
" exit(1);\n"
" }\n"
"}\n");
ASSERT_EQUALS("[test.cpp:5]: (style) Found obsolete function 'gethostbyaddr'. It is recommended that new applications use the 'getaddrinfo' function\n", errout.str());
}
void testusleep()
{
check("void f()\n"
"{\n"
" usleep( 1000 );\n"
"}\n");
ASSERT_EQUALS("[test.cpp:3]: (style) Found obsolete function 'usleep'. It is recommended that new applications use the 'nanosleep' or 'setitimer' function\n", errout.str());
}
void testindex()
{
check("namespace n1 {\n"
" int index(){};\n"
"}\n"
"int main()\n"
"{\n"
" n1::index();\n"
"}\n");
ASSERT_EQUALS("", errout.str());
check("std::size_t f()\n"
"{\n"
" std::size_t index(0);\n"
" index++;\n"
" return index;\n"
"}\n");
ASSERT_EQUALS("", errout.str());
check("int f()\n"
"{\n"
" return this->index();\n"
"}\n");
ASSERT_EQUALS("", errout.str());
check("void f()\n"
"{\n"
" int index( 0 );\n"
"}\n");
ASSERT_EQUALS("", errout.str());
check("const char f()\n"
"{\n"
" const char var[6] = 'index';\n"
" const char i = index(var, 0);\n"
" return i;\n"
"}\n");
ASSERT_EQUALS("[test.cpp:4]: (style) Found obsolete function 'index'. It is recommended to use the function 'strchr' instead\n", errout.str());
}
void testrindex()
{
check("void f()\n"
"{\n"
" int rindex( 0 );\n"
"}\n");
ASSERT_EQUALS("", errout.str());
check("void f()\n"
"{\n"
" const char var[7] = 'rindex';\n"
" print(rindex(var, 0));\n"
"}\n");
ASSERT_EQUALS("[test.cpp:4]: (style) Found obsolete function 'rindex'. It is recommended to use the function 'strrchr' instead\n", errout.str());
}
void testvar()
{
check("class Fred {\n"
"public:\n"
" Fred() : index(0) { }\n"
" int index;\n"
"};\n");
ASSERT_EQUALS("", errout.str());
}
void testgets()
{
check("void f()\n"
"{\n"
" char *x = gets();\n"
"}\n");
ASSERT_EQUALS("[test.cpp:3]: (style) Found obsolete function 'gets'. It is recommended to use the function 'fgets' instead\n", errout.str());
}
};
REGISTER_TEST(TestObsoleteFunctions)
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