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/*
* Cppcheck - A tool for static C/C++ code analysis
* Copyright (C) 2007-2023 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 "cppcheckexecutor.h"
#include "analyzerinfo.h"
#include "cmdlineparser.h"
#include "color.h"
#include "config.h"
#include "cppcheck.h"
#include "errortypes.h"
#include "filelister.h"
#include "importproject.h"
#include "library.h"
#include "path.h"
#include "pathmatch.h"
#include "settings.h"
#include "singleexecutor.h"
#include "suppressions.h"
#include "utils.h"
#include "checkunusedfunctions.h"
#if defined(THREADING_MODEL_THREAD)
#include "threadexecutor.h"
#elif defined(THREADING_MODEL_FORK)
#include "processexecutor.h"
#endif
#include <algorithm>
#include <cstdio>
#include <cstdlib> // EXIT_SUCCESS and EXIT_FAILURE
#include <functional>
#include <iostream>
#include <iterator>
#include <list>
#include <memory>
#include <sstream> // IWYU pragma: keep
#include <utility>
#include <vector>
#ifdef USE_UNIX_SIGNAL_HANDLING
#include "cppcheckexecutorsig.h"
#endif
#ifdef USE_WINDOWS_SEH
#include "cppcheckexecutorseh.h"
#endif
#ifdef _WIN32
#include <windows.h>
#endif
/*static*/ FILE* CppCheckExecutor::mExceptionOutput = stdout;
CppCheckExecutor::CppCheckExecutor()
: mSettings(nullptr), mLatestProgressOutputTime(0), mErrorOutput(nullptr), mShowAllErrors(false)
{}
CppCheckExecutor::~CppCheckExecutor()
{
delete mErrorOutput;
}
bool CppCheckExecutor::parseFromArgs(Settings &settings, int argc, const char* const argv[])
{
CmdLineParser parser(settings);
const bool success = parser.parseFromArgs(argc, argv);
if (success) {
if (parser.getShowVersion() && !parser.getShowErrorMessages()) {
if (!settings.cppcheckCfgProductName.empty()) {
std::cout << settings.cppcheckCfgProductName << std::endl;
} else {
const char * const extraVersion = CppCheck::extraVersion();
if (*extraVersion != 0)
std::cout << "Cppcheck " << CppCheck::version() << " ("
<< extraVersion << ')' << std::endl;
else
std::cout << "Cppcheck " << CppCheck::version() << std::endl;
}
}
if (parser.getShowErrorMessages()) {
mShowAllErrors = true;
std::cout << ErrorMessage::getXMLHeader(settings.cppcheckCfgProductName);
CppCheck::getErrorMessages(*this);
std::cout << ErrorMessage::getXMLFooter() << std::endl;
}
if (parser.exitAfterPrinting()) {
Settings::terminate();
return true;
}
} else {
return false;
}
// Check that all include paths exist
{
for (std::list<std::string>::iterator iter = settings.includePaths.begin();
iter != settings.includePaths.end();
) {
const std::string path(Path::toNativeSeparators(*iter));
if (FileLister::isDirectory(path))
++iter;
else {
// If the include path is not found, warn user and remove the non-existing path from the list.
if (settings.severity.isEnabled(Severity::information))
std::cout << "(information) Couldn't find path given by -I '" << path << '\'' << std::endl;
iter = settings.includePaths.erase(iter);
}
}
}
// Output a warning for the user if he tries to exclude headers
const std::vector<std::string>& ignored = parser.getIgnoredPaths();
const bool warn = std::any_of(ignored.cbegin(), ignored.cend(), [](const std::string& i) {
return Path::isHeader(i);
});
if (warn) {
std::cout << "cppcheck: filename exclusion does not apply to header (.h and .hpp) files." << std::endl;
std::cout << "cppcheck: Please use --suppress for ignoring results from the header files." << std::endl;
}
const std::vector<std::string>& pathnames = parser.getPathNames();
#if defined(_WIN32)
// For Windows we want case-insensitive path matching
const bool caseSensitive = false;
#else
const bool caseSensitive = true;
#endif
if (!settings.project.fileSettings.empty() && !settings.fileFilters.empty()) {
// filter only for the selected filenames from all project files
std::list<ImportProject::FileSettings> newList;
const std::list<ImportProject::FileSettings>& fileSettings = settings.project.fileSettings;
std::copy_if(fileSettings.cbegin(), fileSettings.cend(), std::back_inserter(newList), [&](const ImportProject::FileSettings& fs) {
return matchglobs(settings.fileFilters, fs.filename);
});
if (!newList.empty())
settings.project.fileSettings = newList;
else {
std::cout << "cppcheck: error: could not find any files matching the filter." << std::endl;
return false;
}
} else if (!pathnames.empty()) {
// Execute recursiveAddFiles() to each given file parameter
const PathMatch matcher(ignored, caseSensitive);
for (const std::string &pathname : pathnames) {
std::string err = FileLister::recursiveAddFiles(mFiles, Path::toNativeSeparators(pathname), settings.library.markupExtensions(), matcher);
if (!err.empty()) {
std::cout << "cppcheck: " << err << std::endl;
}
}
}
if (mFiles.empty() && settings.project.fileSettings.empty()) {
std::cout << "cppcheck: error: could not find or open any of the paths given." << std::endl;
if (!ignored.empty())
std::cout << "cppcheck: Maybe all paths were ignored?" << std::endl;
return false;
} else if (!settings.fileFilters.empty() && settings.project.fileSettings.empty()) {
std::map<std::string, std::size_t> newMap;
for (std::map<std::string, std::size_t>::const_iterator i = mFiles.cbegin(); i != mFiles.cend(); ++i)
if (matchglobs(settings.fileFilters, i->first)) {
newMap[i->first] = i->second;
}
mFiles = newMap;
if (mFiles.empty()) {
std::cout << "cppcheck: error: could not find any files matching the filter." << std::endl;
return false;
}
}
return true;
}
int CppCheckExecutor::check(int argc, const char* const argv[])
{
CheckUnusedFunctions::clear();
Settings settings;
if (!parseFromArgs(settings, argc, argv)) {
return EXIT_FAILURE;
}
if (Settings::terminated()) {
return EXIT_SUCCESS;
}
CppCheck cppCheck(*this, true, executeCommand);
cppCheck.settings() = settings;
mSettings = &settings;
int ret;
if (settings.exceptionHandling)
ret = check_wrapper(cppCheck);
else
ret = check_internal(cppCheck);
mSettings = nullptr;
return ret;
}
int CppCheckExecutor::check_wrapper(CppCheck& cppcheck)
{
#ifdef USE_WINDOWS_SEH
return check_wrapper_seh(*this, &CppCheckExecutor::check_internal, cppcheck);
#elif defined(USE_UNIX_SIGNAL_HANDLING)
return check_wrapper_sig(*this, &CppCheckExecutor::check_internal, cppcheck);
#else
return check_internal(cppcheck);
#endif
}
bool CppCheckExecutor::reportSuppressions(const Settings &settings, bool unusedFunctionCheckEnabled, const std::map<std::string, std::size_t> &files, ErrorLogger& errorLogger) {
const auto& suppressions = settings.nomsg.getSuppressions();
if (std::any_of(suppressions.begin(), suppressions.end(), [](const Suppressions::Suppression& s) {
return s.errorId == "unmatchedSuppression" && s.fileName.empty() && s.lineNumber == Suppressions::Suppression::NO_LINE;
}))
return false;
bool err = false;
if (settings.useSingleJob()) {
for (std::map<std::string, std::size_t>::const_iterator i = files.cbegin(); i != files.cend(); ++i) {
err |= errorLogger.reportUnmatchedSuppressions(
settings.nomsg.getUnmatchedLocalSuppressions(i->first, unusedFunctionCheckEnabled));
}
}
err |= errorLogger.reportUnmatchedSuppressions(settings.nomsg.getUnmatchedGlobalSuppressions(unusedFunctionCheckEnabled));
return err;
}
/*
* That is a method which gets called from check_wrapper
* */
int CppCheckExecutor::check_internal(CppCheck& cppcheck)
{
Settings& settings = cppcheck.settings();
const bool std = tryLoadLibrary(settings.library, settings.exename, "std.cfg");
auto failed_lib = std::find_if(settings.libraries.begin(), settings.libraries.end(), [&](const std::string& lib) {
return !tryLoadLibrary(settings.library, settings.exename, lib.c_str());
});
if (failed_lib != settings.libraries.end()) {
const std::string msg("Failed to load the library " + *failed_lib);
const std::list<ErrorMessage::FileLocation> callstack;
ErrorMessage errmsg(callstack, emptyString, Severity::information, msg, "failedToLoadCfg", Certainty::normal);
reportErr(errmsg);
return EXIT_FAILURE;
}
if (!std) {
const std::list<ErrorMessage::FileLocation> callstack;
const std::string msg("Failed to load std.cfg. Your Cppcheck installation is broken, please re-install.");
#ifdef FILESDIR
const std::string details("The Cppcheck binary was compiled with FILESDIR set to \""
FILESDIR "\" and will therefore search for "
"std.cfg in " FILESDIR "/cfg.");
#else
const std::string cfgfolder(Path::fromNativeSeparators(Path::getPathFromFilename(settings.exename)) + "cfg");
const std::string details("The Cppcheck binary was compiled without FILESDIR set. Either the "
"std.cfg should be available in " + cfgfolder + " or the FILESDIR "
"should be configured.");
#endif
ErrorMessage errmsg(callstack, emptyString, Severity::information, msg+" "+details, "failedToLoadCfg", Certainty::normal);
reportErr(errmsg);
return EXIT_FAILURE;
}
if (settings.reportProgress)
mLatestProgressOutputTime = std::time(nullptr);
if (!settings.outputFile.empty()) {
mErrorOutput = new std::ofstream(settings.outputFile);
}
if (settings.xml) {
reportErr(ErrorMessage::getXMLHeader(settings.cppcheckCfgProductName));
}
if (!settings.buildDir.empty()) {
settings.loadSummaries();
std::list<std::string> fileNames;
for (std::map<std::string, std::size_t>::const_iterator i = mFiles.cbegin(); i != mFiles.cend(); ++i)
fileNames.emplace_back(i->first);
AnalyzerInformation::writeFilesTxt(settings.buildDir, fileNames, settings.userDefines, settings.project.fileSettings);
}
unsigned int returnValue = 0;
if (settings.useSingleJob()) {
// Single process
SingleExecutor executor(cppcheck, mFiles, settings, *this);
returnValue = executor.check();
} else {
#if defined(THREADING_MODEL_THREAD)
ThreadExecutor executor(mFiles, settings, *this);
#elif defined(THREADING_MODEL_FORK)
ProcessExecutor executor(mFiles, settings, *this);
#endif
returnValue = executor.check();
}
cppcheck.analyseWholeProgram(settings.buildDir, mFiles);
if (settings.severity.isEnabled(Severity::information) || settings.checkConfiguration) {
const bool err = reportSuppressions(settings, cppcheck.isUnusedFunctionCheckEnabled(), mFiles, *this);
if (err && returnValue == 0)
returnValue = settings.exitCode;
}
if (!settings.checkConfiguration) {
cppcheck.tooManyConfigsError(emptyString,0U);
}
if (settings.xml) {
reportErr(ErrorMessage::getXMLFooter());
}
if (returnValue)
return settings.exitCode;
return 0;
}
#ifdef _WIN32
// fix trac ticket #439 'Cppcheck reports wrong filename for filenames containing 8-bit ASCII'
static inline std::string ansiToOEM(const std::string &msg, bool doConvert)
{
if (doConvert) {
const unsigned msglength = msg.length();
// convert ANSI strings to OEM strings in two steps
std::vector<WCHAR> wcContainer(msglength);
std::string result(msglength, '\0');
// ansi code page characters to wide characters
MultiByteToWideChar(CP_ACP, 0, msg.data(), msglength, wcContainer.data(), msglength);
// wide characters to oem codepage characters
WideCharToMultiByte(CP_OEMCP, 0, wcContainer.data(), msglength, const_cast<char *>(result.data()), msglength, nullptr, nullptr);
return result; // hope for return value optimization
}
return msg;
}
#else
// no performance regression on non-windows systems
#define ansiToOEM(msg, doConvert) (msg)
#endif
void CppCheckExecutor::reportErr(const std::string &errmsg)
{
if (mErrorOutput)
*mErrorOutput << errmsg << std::endl;
else {
std::cerr << ansiToOEM(errmsg, (mSettings == nullptr) ? true : !mSettings->xml) << std::endl;
}
}
void CppCheckExecutor::reportOut(const std::string &outmsg, Color c)
{
if (c == Color::Reset)
std::cout << ansiToOEM(outmsg, true) << std::endl;
else
std::cout << c << ansiToOEM(outmsg, true) << Color::Reset << std::endl;
}
void CppCheckExecutor::reportProgress(const std::string &filename, const char stage[], const std::size_t value)
{
(void)filename;
if (!mLatestProgressOutputTime)
return;
// Report progress messages every 10 seconds
const std::time_t currentTime = std::time(nullptr);
if (currentTime >= (mLatestProgressOutputTime + 10)) {
mLatestProgressOutputTime = currentTime;
// format a progress message
std::ostringstream ostr;
ostr << "progress: "
<< stage
<< ' ' << value << '%';
// Report progress message
reportOut(ostr.str());
}
}
void CppCheckExecutor::reportErr(const ErrorMessage &msg)
{
if (mShowAllErrors) {
reportOut(msg.toXML());
return;
}
// Alert only about unique errors
if (!mShownErrors.insert(msg.toString(mSettings->verbose)).second)
return;
if (mSettings->xml)
reportErr(msg.toXML());
else
reportErr(msg.toString(mSettings->verbose, mSettings->templateFormat, mSettings->templateLocation));
}
void CppCheckExecutor::setExceptionOutput(FILE* exceptionOutput)
{
mExceptionOutput = exceptionOutput;
}
FILE* CppCheckExecutor::getExceptionOutput()
{
return mExceptionOutput;
}
bool CppCheckExecutor::tryLoadLibrary(Library& destination, const std::string& basepath, const char* filename)
{
const Library::Error err = destination.load(basepath.c_str(), filename);
if (err.errorcode == Library::ErrorCode::UNKNOWN_ELEMENT)
std::cout << "cppcheck: Found unknown elements in configuration file '" << filename << "': " << err.reason << std::endl;
else if (err.errorcode != Library::ErrorCode::OK) {
std::cout << "cppcheck: Failed to load library configuration file '" << filename << "'. ";
switch (err.errorcode) {
case Library::ErrorCode::OK:
break;
case Library::ErrorCode::FILE_NOT_FOUND:
std::cout << "File not found";
break;
case Library::ErrorCode::BAD_XML:
std::cout << "Bad XML";
break;
case Library::ErrorCode::UNKNOWN_ELEMENT:
std::cout << "Unexpected element";
break;
case Library::ErrorCode::MISSING_ATTRIBUTE:
std::cout << "Missing attribute";
break;
case Library::ErrorCode::BAD_ATTRIBUTE_VALUE:
std::cout << "Bad attribute value";
break;
case Library::ErrorCode::UNSUPPORTED_FORMAT:
std::cout << "File is of unsupported format version";
break;
case Library::ErrorCode::DUPLICATE_PLATFORM_TYPE:
std::cout << "Duplicate platform type";
break;
case Library::ErrorCode::PLATFORM_TYPE_REDEFINED:
std::cout << "Platform type redefined";
break;
}
if (!err.reason.empty())
std::cout << " '" + err.reason + "'";
std::cout << std::endl;
return false;
}
return true;
}
/**
* Execute a shell command and read the output from it. Returns true if command terminated successfully.
*/
// cppcheck-suppress passedByValue - used as callback so we need to preserve the signature
// NOLINTNEXTLINE(performance-unnecessary-value-param) - used as callback so we need to preserve the signature
bool CppCheckExecutor::executeCommand(std::string exe, std::vector<std::string> args, std::string redirect, std::string &output_)
{
output_.clear();
std::string joinedArgs;
for (const std::string &arg : args) {
if (!joinedArgs.empty())
joinedArgs += " ";
if (arg.find(' ') != std::string::npos)
joinedArgs += '"' + arg + '"';
else
joinedArgs += arg;
}
#ifdef _WIN32
// Extra quoutes are needed in windows if filename has space
if (exe.find(" ") != std::string::npos)
exe = "\"" + exe + "\"";
const std::string cmd = exe + " " + joinedArgs + " " + redirect;
std::unique_ptr<FILE, decltype(&_pclose)> pipe(_popen(cmd.c_str(), "r"), _pclose);
#else
const std::string cmd = exe + " " + joinedArgs + " " + redirect;
std::unique_ptr<FILE, decltype(&pclose)> pipe(popen(cmd.c_str(), "r"), pclose);
#endif
if (!pipe)
return false;
char buffer[1024];
while (fgets(buffer, sizeof(buffer), pipe.get()) != nullptr)
output_ += buffer;
return true;
}
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