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/*
* Cppcheck - A tool for static C/C++ code analysis
* Copyright (C) 2007-2024 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 "checkersreport.h"
#include "cmdlinelogger.h"
#include "cmdlineparser.h"
#include "color.h"
#include "config.h"
#include "cppcheck.h"
#include "errorlogger.h"
#include "errortypes.h"
#include "filesettings.h"
#include "settings.h"
#include "singleexecutor.h"
#include "suppressions.h"
#include "utils.h"
#if defined(HAS_THREADING_MODEL_THREAD)
#include "threadexecutor.h"
#endif
#if defined(HAS_THREADING_MODEL_FORK)
#include "processexecutor.h"
#endif
#include <algorithm>
#include <cassert>
#include <cstdio>
#include <cstdlib> // EXIT_SUCCESS and EXIT_FAILURE
#include <ctime>
#include <fstream>
#include <iostream>
#include <list>
#include <set>
#include <sstream>
#include <unordered_set>
#include <utility>
#include <vector>
#ifdef USE_UNIX_SIGNAL_HANDLING
#include "signalhandler.h"
#endif
#ifdef USE_WINDOWS_SEH
#include "cppcheckexecutorseh.h"
#endif
#ifdef _WIN32
#include <windows.h>
#endif
#if !defined(WIN32) && !defined(__MINGW32__)
#include <sys/wait.h> // WIFEXITED and friends
#endif
namespace {
class CmdLineLoggerStd : public CmdLineLogger
{
public:
CmdLineLoggerStd() = default;
void printMessage(const std::string &message) override
{
printRaw("cppcheck: " + message);
}
void printError(const std::string &message) override
{
printMessage("error: " + message);
}
void printRaw(const std::string &message) override
{
std::cout << message << std::endl;
}
};
class StdLogger : public ErrorLogger
{
public:
explicit StdLogger(const Settings& settings)
: mSettings(settings)
{
if (!mSettings.outputFile.empty()) {
mErrorOutput = new std::ofstream(settings.outputFile);
}
}
~StdLogger() override {
delete mErrorOutput;
}
StdLogger(const StdLogger&) = delete;
StdLogger& operator=(const SingleExecutor &) = delete;
void resetLatestProgressOutputTime() {
mLatestProgressOutputTime = std::time(nullptr);
}
/**
* Helper function to print out errors. Appends a line change.
* @param errmsg String printed to error stream
*/
void reportErr(const std::string &errmsg);
/**
* @brief Write the checkers report
*/
void writeCheckersReport();
bool hasCriticalErrors() const {
return !mCriticalErrors.empty();
}
private:
/**
* Information about progress is directed here. This should be
* called by the CppCheck class only.
*
* @param outmsg Progress message e.g. "Checking main.cpp..."
*/
void reportOut(const std::string &outmsg, Color c = Color::Reset) override;
/** xml output of errors */
void reportErr(const ErrorMessage &msg) override;
void reportProgress(const std::string &filename, const char stage[], const std::size_t value) override;
/**
* Pointer to current settings; set while check() is running for reportError().
*/
const Settings& mSettings;
/**
* Used to filter out duplicate error messages.
*/
// TODO: store hashes instead of the full messages
std::unordered_set<std::string> mShownErrors;
/**
* Report progress time
*/
std::time_t mLatestProgressOutputTime{};
/**
* Error output
*/
std::ofstream* mErrorOutput{};
/**
* Checkers that has been executed
*/
std::set<std::string> mActiveCheckers;
/**
* True if there are critical errors
*/
std::string mCriticalErrors;
};
}
// TODO: do not directly write to stdout
#if defined(USE_WINDOWS_SEH) || defined(USE_UNIX_SIGNAL_HANDLING)
/*static*/ FILE* CppCheckExecutor::mExceptionOutput = stdout;
#endif
int CppCheckExecutor::check(int argc, const char* const argv[])
{
Settings settings;
CmdLineLoggerStd logger;
CmdLineParser parser(logger, settings, settings.supprs);
if (!parser.fillSettingsFromArgs(argc, argv)) {
return EXIT_FAILURE;
}
if (Settings::terminated()) {
return EXIT_SUCCESS;
}
settings.loadSummaries();
mFiles = parser.getFiles();
mFileSettings = parser.getFileSettings();
settings.setMisraRuleTexts(executeCommand);
const int ret = check_wrapper(settings);
return ret;
}
int CppCheckExecutor::check_wrapper(const Settings& settings)
{
#ifdef USE_WINDOWS_SEH
if (settings.exceptionHandling)
return check_wrapper_seh(*this, &CppCheckExecutor::check_internal, settings);
#elif defined(USE_UNIX_SIGNAL_HANDLING)
if (settings.exceptionHandling)
register_signal_handler();
#endif
return check_internal(settings);
}
bool CppCheckExecutor::reportSuppressions(const Settings &settings, const SuppressionList& suppressions, bool unusedFunctionCheckEnabled, const std::list<FileWithDetails> &files, const std::list<FileSettings>& fileSettings, ErrorLogger& errorLogger) {
const auto& suppr = suppressions.getSuppressions();
if (std::any_of(suppr.begin(), suppr.end(), [](const SuppressionList::Suppression& s) {
return s.errorId == "unmatchedSuppression" && s.fileName.empty() && s.lineNumber == SuppressionList::Suppression::NO_LINE;
}))
return false;
bool err = false;
if (settings.useSingleJob()) {
// the two inputs may only be used exclusively
assert(!(!files.empty() && !fileSettings.empty()));
for (std::list<FileWithDetails>::const_iterator i = files.cbegin(); i != files.cend(); ++i) {
err |= SuppressionList::reportUnmatchedSuppressions(
suppressions.getUnmatchedLocalSuppressions(*i, unusedFunctionCheckEnabled), errorLogger);
}
for (std::list<FileSettings>::const_iterator i = fileSettings.cbegin(); i != fileSettings.cend(); ++i) {
err |= SuppressionList::reportUnmatchedSuppressions(
suppressions.getUnmatchedLocalSuppressions(i->file, unusedFunctionCheckEnabled), errorLogger);
}
}
err |= SuppressionList::reportUnmatchedSuppressions(suppressions.getUnmatchedGlobalSuppressions(unusedFunctionCheckEnabled), errorLogger);
return err;
}
/*
* That is a method which gets called from check_wrapper
* */
int CppCheckExecutor::check_internal(const Settings& settings) const
{
StdLogger stdLogger(settings);
if (settings.reportProgress >= 0)
stdLogger.resetLatestProgressOutputTime();
if (settings.xml) {
stdLogger.reportErr(ErrorMessage::getXMLHeader(settings.cppcheckCfgProductName));
}
if (!settings.buildDir.empty()) {
std::list<std::string> fileNames;
for (std::list<FileWithDetails>::const_iterator i = mFiles.cbegin(); i != mFiles.cend(); ++i)
fileNames.emplace_back(i->path());
AnalyzerInformation::writeFilesTxt(settings.buildDir, fileNames, settings.userDefines, mFileSettings);
}
if (!settings.checkersReportFilename.empty())
std::remove(settings.checkersReportFilename.c_str());
CppCheck cppcheck(stdLogger, true, executeCommand);
cppcheck.settings() = settings; // this is a copy
auto& suppressions = cppcheck.settings().supprs.nomsg;
unsigned int returnValue = 0;
if (settings.useSingleJob()) {
// Single process
SingleExecutor executor(cppcheck, mFiles, mFileSettings, settings, suppressions, stdLogger);
returnValue = executor.check();
} else {
#if defined(HAS_THREADING_MODEL_THREAD)
if (settings.executor == Settings::ExecutorType::Thread) {
ThreadExecutor executor(mFiles, mFileSettings, settings, suppressions, stdLogger, CppCheckExecutor::executeCommand);
returnValue = executor.check();
}
#endif
#if defined(HAS_THREADING_MODEL_FORK)
if (settings.executor == Settings::ExecutorType::Process) {
ProcessExecutor executor(mFiles, mFileSettings, settings, suppressions, stdLogger, CppCheckExecutor::executeCommand);
returnValue = executor.check();
}
#endif
}
returnValue |= cppcheck.analyseWholeProgram(settings.buildDir, mFiles, mFileSettings);
if (settings.severity.isEnabled(Severity::information) || settings.checkConfiguration) {
const bool err = reportSuppressions(settings, suppressions, settings.checks.isEnabled(Checks::unusedFunction), mFiles, mFileSettings, stdLogger);
if (err && returnValue == 0)
returnValue = settings.exitCode;
}
if (!settings.checkConfiguration) {
cppcheck.tooManyConfigsError(emptyString,0U);
}
if (settings.safety || settings.severity.isEnabled(Severity::information) || !settings.checkersReportFilename.empty())
stdLogger.writeCheckersReport();
if (settings.xml) {
stdLogger.reportErr(ErrorMessage::getXMLFooter());
}
if (settings.safety && (stdLogger.hasCriticalErrors() || returnValue != 0))
return EXIT_FAILURE;
if (returnValue)
return settings.exitCode;
return EXIT_SUCCESS;
}
void StdLogger::writeCheckersReport()
{
CheckersReport checkersReport(mSettings, mActiveCheckers);
bool suppressed = false;
for (const SuppressionList::Suppression& s : mSettings.supprs.nomsg.getSuppressions()) {
if (s.errorId == "checkersReport")
suppressed = true;
}
if (!suppressed) {
ErrorMessage msg;
msg.severity = Severity::information;
msg.id = "checkersReport";
const int activeCheckers = checkersReport.getActiveCheckersCount();
const int totalCheckers = checkersReport.getAllCheckersCount();
std::string what;
if (mCriticalErrors.empty())
what = std::to_string(activeCheckers) + "/" + std::to_string(totalCheckers);
else
what = "There was critical errors";
if (mSettings.checkersReportFilename.empty())
what += " (use --checkers-report=<filename> to see details)";
msg.setmsg("Active checkers: " + what);
reportErr(msg);
}
if (!mSettings.checkersReportFilename.empty()) {
std::ofstream fout(mSettings.checkersReportFilename);
if (fout.is_open())
fout << checkersReport.getReport(mCriticalErrors);
}
}
#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, &result[0], 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 StdLogger::reportErr(const std::string &errmsg)
{
if (mErrorOutput)
*mErrorOutput << errmsg << std::endl;
else {
std::cerr << ansiToOEM(errmsg, !mSettings.xml) << std::endl;
}
}
void StdLogger::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;
}
// TODO: remove filename parameter?
void StdLogger::reportProgress(const std::string &filename, const char stage[], const std::size_t value)
{
(void)filename;
if (!mLatestProgressOutputTime)
return;
// Report progress messages every x seconds
const std::time_t currentTime = std::time(nullptr);
if (currentTime >= (mLatestProgressOutputTime + mSettings.reportProgress))
{
mLatestProgressOutputTime = currentTime;
// format a progress message
std::ostringstream ostr;
ostr << "progress: "
<< stage
<< ' ' << value << '%';
// Report progress message
reportOut(ostr.str());
}
}
void StdLogger::reportErr(const ErrorMessage &msg)
{
if (msg.severity == Severity::internal && (msg.id == "logChecker" || endsWith(msg.id, "-logChecker"))) {
const std::string& checker = msg.shortMessage();
mActiveCheckers.emplace(checker);
return;
}
if (ErrorLogger::isCriticalErrorId(msg.id) && mCriticalErrors.find(msg.id) == std::string::npos) {
if (!mCriticalErrors.empty())
mCriticalErrors += ", ";
mCriticalErrors += msg.id;
if (msg.severity == Severity::internal)
mCriticalErrors += " (suppressed)";
}
if (msg.severity == Severity::internal)
return;
// TODO: we generate a different message here then we log below
// TODO: there should be no need for verbose and default messages here
// 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));
}
#if defined(USE_WINDOWS_SEH) || defined(USE_UNIX_SIGNAL_HANDLING)
void CppCheckExecutor::setExceptionOutput(FILE* exceptionOutput)
{
mExceptionOutput = exceptionOutput;
#if defined(USE_UNIX_SIGNAL_HANDLING)
set_signal_handler_output(mExceptionOutput);
#endif
}
// cppcheck-suppress unusedFunction - only used by USE_WINDOWS_SEH code
FILE* CppCheckExecutor::getExceptionOutput()
{
return mExceptionOutput;
}
#endif
/**
* Execute a shell command and read the output from it. Returns true if command terminated successfully.
*/
// cppcheck-suppress passedByValueCallback - 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
int CppCheckExecutor::executeCommand(std::string exe, std::vector<std::string> args, std::string redirect, std::string &output_)
{
output_.clear();
#ifdef _WIN32
// Extra quoutes are needed in windows if filename has space
if (exe.find(" ") != std::string::npos)
exe = "\"" + exe + "\"";
#endif
std::string joinedArgs;
for (const std::string &arg : args) {
if (!joinedArgs.empty())
joinedArgs += " ";
if (arg.find(' ') != std::string::npos)
joinedArgs += '"' + arg + '"';
else
joinedArgs += arg;
}
const std::string cmd = exe + " " + joinedArgs + " " + redirect;
#ifdef _WIN32
FILE* p = _popen(cmd.c_str(), "r");
#else
FILE *p = popen(cmd.c_str(), "r");
#endif
//std::cout << "invoking command '" << cmd << "'" << std::endl;
if (!p) {
// TODO: how to provide to caller?
//const int err = errno;
//std::cout << "popen() errno " << std::to_string(err) << std::endl;
return -1;
}
char buffer[1024];
while (fgets(buffer, sizeof(buffer), p) != nullptr)
output_ += buffer;
#ifdef _WIN32
const int res = _pclose(p);
#else
const int res = pclose(p);
#endif
if (res == -1) { // error occurred
// TODO: how to provide to caller?
//const int err = errno;
//std::cout << "pclose() errno " << std::to_string(err) << std::endl;
return res;
}
#if !defined(WIN32) && !defined(__MINGW32__)
if (WIFEXITED(res)) {
return WEXITSTATUS(res);
}
if (WIFSIGNALED(res)) {
return WTERMSIG(res);
}
#endif
return res;
}