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753 lines (637 loc) · 24.8 KB
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/*
* Cppcheck - A tool for static C/C++ code analysis
* Copyright (C) 2007-2026 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/>.
*/
#if defined(__CYGWIN__)
#define _BSD_SOURCE // required to have popen() and pclose()
#endif
#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 "path.h"
#include "sarifreport.h"
#include "settings.h"
#include "singleexecutor.h"
#include "suppressions.h"
#include "timer.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 <map>
#include <memory>
#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 "sehwrapper.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; // TODO: should not append newline
}
};
class StdLogger : public ErrorLogger
{
public:
explicit StdLogger(const Settings& settings)
: mSettings(settings)
, mGuidelineMapping(createGuidelineMapping(settings.reportType))
{
if (!mSettings.outputFile.empty()) {
mErrorOutput = new std::ofstream(settings.outputFile);
}
if (!mSettings.buildDir.empty()) {
mCheckersFile = Path::join(settings.buildDir, "checkers.txt");
}
}
~StdLogger() override {
if (mSettings.outputFormat == Settings::OutputFormat::sarif) {
reportErr(mSarifReport.serialize(mSettings.cppcheckCfgProductName));
}
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);
void reportMetric(const std::string &metric) override
{
mFileMetrics.push_back(metric);
}
void reportMetrics()
{
if (!mFileMetrics.empty()) {
auto &out = mErrorOutput ? *mErrorOutput : std::cerr;
out << " <metrics>" << std::endl;
for (const auto &metric : mFileMetrics) {
out << " " << metric << std::endl;
}
out << " </metrics>" << std::endl;
}
}
/**
* @brief Write the checkers report
*/
void writeCheckersReport(const Suppressions& supprs);
bool hasCriticalErrors() const {
return !mCriticalErrors.empty();
}
const std::string& getCtuInfo() const {
return mCtuInfo;
}
void readActiveCheckers() {
if (mCheckersFile.empty())
return;
std::ifstream fin(mCheckersFile);
if (fin.is_open())
{
std::set<std::string> activeCheckers;
std::string line;
while (std::getline(fin, line))
{
activeCheckers.emplace(std::move(line));
}
mActiveCheckers = std::move(activeCheckers);
}
}
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[], std::size_t value) override;
/**
* Reference 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;
/**
* List of critical errors
*/
std::string mCriticalErrors;
/**
* CTU information
*/
std::string mCtuInfo;
/**
* SARIF report generator
*/
SarifReport mSarifReport;
/**
* Coding standard guideline mapping
*/
std::map<std::string, std::string> mGuidelineMapping;
/**
* File metrics
*/
std::vector<std::string> mFileMetrics;
/**
* The file the cached active checkers are stored in
*/
std::string mCheckersFile;
};
}
int CppCheckExecutor::check(int argc, const char* const argv[])
{
Settings settings;
CmdLineLoggerStd logger;
Suppressions supprs;
CmdLineParser parser(logger, settings, supprs);
if (!parser.fillSettingsFromArgs(argc, argv)) {
return EXIT_FAILURE;
}
if (Settings::terminated()) {
return EXIT_SUCCESS;
}
std::unique_ptr<OneShotTimer> overallTimer;
if (settings.showtime == Settings::ShowTime::SUMMARY || settings.showtime == Settings::ShowTime::TOP5_SUMMARY)
overallTimer.reset(new OneShotTimer("Overall time"));
settings.loadSummaries();
mFiles = parser.getFiles();
mFileSettings = parser.getFileSettings();
const int ret = check_wrapper(settings, supprs);
return ret;
}
int CppCheckExecutor::check_wrapper(const Settings& settings, Suppressions& supprs)
{
#ifdef USE_WINDOWS_SEH
if (settings.exceptionHandling) {
CALL_WITH_SEH_WRAPPER(check_internal(settings, supprs));
}
#elif defined(USE_UNIX_SIGNAL_HANDLING)
if (settings.exceptionHandling)
register_signal_handler(settings.exceptionOutput);
#endif
return check_internal(settings, supprs);
}
/**
* Get list of unmatchedSuppression errors
* @param unmatched list of unmatched suppressions
* @param filters a list of (globbed) IDs to filter out
* @return vector of unmatchedSuppression errors
*/
static std::vector<ErrorMessage> getUnmatchedSuppressions(const std::list<SuppressionList::Suppression> &unmatched, const std::vector<std::string>& filters)
{
std::vector<ErrorMessage> errors;
// Report unmatched suppressions
for (const SuppressionList::Suppression &s : unmatched) {
// check if this unmatched suppression is suppressed
bool suppressed = false;
for (const SuppressionList::Suppression &s2 : unmatched) {
if (s2.errorId == "unmatchedSuppression") { // TODO: handle unmatchedPolyspaceSuppression?
if ((s2.fileName.empty() || s2.fileName == "*" || s2.fileName == s.fileName) &&
(s2.lineNumber == SuppressionList::Suppression::NO_LINE || s2.lineNumber == s.lineNumber)) {
suppressed = true;
break;
}
}
}
if (suppressed)
continue;
const bool skip = std::any_of(filters.cbegin(), filters.cend(), [&s](const std::string& filter) {
return matchglob(filter, s.errorId);
});
if (skip)
continue;
std::list<ErrorMessage::FileLocation> callStack;
if (!s.fileName.empty()) {
callStack.emplace_back(s.fileName, s.lineNumber == -1 ? 0 : s.lineNumber, s.column); // TODO: get rid of s.lineNumber == -1 hack
}
const std::string unmatchedSuppressionId = s.isPolyspace ? "unmatchedPolyspaceSuppression" : "unmatchedSuppression";
errors.emplace_back(std::move(callStack), "", Severity::information, "Unmatched suppression: " + s.errorId, unmatchedSuppressionId, Certainty::normal);
}
return errors;
}
bool CppCheckExecutor::reportUnmatchedSuppressions(const Settings &settings, const SuppressionList& suppressions, const std::list<FileWithDetails> &files, const std::list<FileSettings>& fileSettings, ErrorLogger& errorLogger) {
// the two inputs may only be used exclusively
assert(!(!files.empty() && !fileSettings.empty()));
// bail out if there is a suppression of unmatchedSuppression which matches any file
auto suppr = suppressions.getSuppressions();
if (std::any_of(suppr.cbegin(), suppr.cend(), [](const SuppressionList::Suppression& s) {
// TODO: handle unmatchedPolyspaceSuppression?
return s.errorId == "unmatchedSuppression" && (s.fileName.empty() || s.fileName == "*") && s.lineNumber == SuppressionList::Suppression::NO_LINE;
}))
return false;
SuppressionList supprlist;
const bool doUnusedFunctionOnly = Settings::unusedFunctionOnly();
// ignore all other suppressions if we use the unusedFunction hack
for (auto&& s : suppr)
{
// TODO: checkersReport should not be reported - see #13387
if (doUnusedFunctionOnly && s.errorId != "unusedFunction" && s.errorId != "checkersReport")
continue;
supprlist.addSuppression(std::move(s));
}
const auto reportErrorsFn = [&](const std::string& sourcefile, std::size_t fsFileId, const std::vector<ErrorMessage>& errors) -> bool {
if (errors.empty())
return false;
// TODO: what if sourcefile is empty?
AnalyzerInformation analyzerInfo;
// FIXME: this is a horrible hack
// we need to "re-open" the file so we can add the unmatchedSuppression findings.
// we cannot keep it open conditionally because the whole program analysis reads the XML.
// re-ordering the code is also not an option because the unmatched suppression reporting needs to be run after all other checks.
analyzerInfo.reopen(settings.buildDir, sourcefile, /*cfgname*/ "", fsFileId);
for (const auto& errmsg : errors) {
analyzerInfo.reportErr(errmsg);
errorLogger.reportErr(errmsg);
}
return true;
};
bool err = false;
for (auto i = files.cbegin(); i != files.cend(); ++i) {
const std::vector<ErrorMessage> errors = getUnmatchedSuppressions(supprlist.getUnmatchedLocalSuppressions(*i), settings.unmatchedSuppressionFilters);
err |= reportErrorsFn(i->spath(), i->fsFileId(), errors);
}
for (auto i = fileSettings.cbegin(); i != fileSettings.cend(); ++i) {
const std::vector<ErrorMessage> errors = getUnmatchedSuppressions(supprlist.getUnmatchedLocalSuppressions(i->file), settings.unmatchedSuppressionFilters);
err |= reportErrorsFn(i->file.spath(), i->file.fsFileId(), errors);
}
if (settings.inlineSuppressions) {
const std::vector<ErrorMessage> errors = getUnmatchedSuppressions(supprlist.getUnmatchedInlineSuppressions(), settings.unmatchedSuppressionFilters);
for (const auto& errmsg : errors) {
std::string sourcefile;
if (!errmsg.callStack.empty())
sourcefile = errmsg.callStack.cbegin()->getfile(false); // TODO: simplify path?
err |= reportErrorsFn(sourcefile, 0, {errmsg});
}
}
const std::vector<ErrorMessage> errors = getUnmatchedSuppressions(supprlist.getUnmatchedGlobalSuppressions(), settings.unmatchedSuppressionFilters);
for (const auto& errmsg : errors) {
std::string sourcefile;
if (!errmsg.callStack.empty())
sourcefile = errmsg.callStack.cbegin()->getfile(false); // TODO: simplify path?
err |= reportErrorsFn(sourcefile, 0, {errmsg});
}
return err;
}
/*
* That is a method which gets called from check_wrapper
* */
int CppCheckExecutor::check_internal(const Settings& settings, Suppressions& supprs) const
{
StdLogger stdLogger(settings);
std::unique_ptr<TimerResults> timerResults;
if (settings.showtime != Settings::ShowTime::NONE)
timerResults.reset(new TimerResults);
if (settings.reportProgress >= 0)
stdLogger.resetLatestProgressOutputTime();
if (settings.outputFormat == Settings::OutputFormat::xml) {
stdLogger.reportErr(ErrorMessage::getXMLHeader(settings.cppcheckCfgProductName, settings.xml_version));
}
if (!settings.buildDir.empty()) {
std::list<std::string> fileNames;
for (auto i = mFiles.cbegin(); i != mFiles.cend(); ++i)
fileNames.emplace_back(i->path());
AnalyzerInformation::writeFilesTxt(settings.buildDir, fileNames, mFileSettings);
stdLogger.readActiveCheckers();
}
if (!settings.checkersReportFilename.empty())
std::remove(settings.checkersReportFilename.c_str());
CppCheck cppcheck(settings, supprs, stdLogger, timerResults.get(), true, executeCommand);
unsigned int returnValue = 0;
if (settings.useSingleJob()) {
// Single process
SingleExecutor executor(cppcheck, mFiles, mFileSettings, settings, supprs, stdLogger, timerResults.get());
returnValue = executor.check();
} else {
#if defined(HAS_THREADING_MODEL_THREAD)
if (settings.executor == Settings::ExecutorType::Thread) {
ThreadExecutor executor(mFiles, mFileSettings, settings, supprs, stdLogger, timerResults.get(), CppCheckExecutor::executeCommand);
returnValue = executor.check();
}
#endif
#if defined(HAS_THREADING_MODEL_FORK)
if (settings.executor == Settings::ExecutorType::Process) {
ProcessExecutor executor(mFiles, mFileSettings, settings, supprs, stdLogger, timerResults.get(), CppCheckExecutor::executeCommand);
returnValue = executor.check();
}
#endif
}
// TODO: show time *after* the whole program analysis
if (timerResults) {
if (settings.showtime == Settings::ShowTime::SUMMARY)
timerResults->showResults();
else if (settings.showtime == Settings::ShowTime::TOP5_SUMMARY)
timerResults->showResults(5);
}
// TODO: is this run again instead of using previously cached results?
returnValue |= cppcheck.analyseWholeProgram(settings.buildDir, mFiles, mFileSettings, stdLogger.getCtuInfo());
if ((settings.severity.isEnabled(Severity::information) || settings.checkConfiguration) && !supprs.nomsg.getSuppressions().empty()) {
const bool err = reportUnmatchedSuppressions(settings, supprs.nomsg, mFiles, mFileSettings, stdLogger);
if (err && returnValue == 0)
returnValue = settings.exitCode;
}
stdLogger.writeCheckersReport(supprs);
if (settings.outputFormat == Settings::OutputFormat::xml) {
if (settings.xml_version == 3)
stdLogger.reportMetrics();
stdLogger.reportErr(ErrorMessage::getXMLFooter(settings.xml_version));
}
if (settings.safety && stdLogger.hasCriticalErrors())
return EXIT_FAILURE;
if (returnValue)
return settings.exitCode;
return EXIT_SUCCESS;
}
void StdLogger::writeCheckersReport(const Suppressions& supprs)
{
// TODO: only necessary when we actually issue a checkers report?
if (!mCheckersFile.empty())
{
std::ofstream fout(mCheckersFile);
for (const auto& c : mActiveCheckers)
{
fout << c << std::endl;
}
}
bool summary, xmlReport, textReport;
if (!mSettings.collectLogCheckers(&summary, &xmlReport, &textReport))
return;
CheckersReport checkersReport(mSettings, mActiveCheckers);
// TODO: include in summary boolean
const auto& suppressions = supprs.nomsg.getSuppressions();
const bool summarySuppressed = std::any_of(suppressions.cbegin(), suppressions.cend(), [](const SuppressionList::Suppression& s) {
return s.errorId == "checkersReport";
});
if (summary && !summarySuppressed) {
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 (!xmlReport && !textReport)
what += " (use --checkers-report=<filename> to see details)";
msg.setmsg("Active checkers: " + what);
reportErr(msg);
}
if (textReport) {
std::ofstream fout(mSettings.checkersReportFilename);
if (fout.is_open())
fout << checkersReport.getReport(mCriticalErrors);
}
if (xmlReport) {
reportErr(" </errors>\n");
if (mSettings.safety)
reportErr(" <safety/>\n");
if (mSettings.inlineSuppressions)
reportErr(" <inline-suppr/>\n");
if (!suppressions.empty()) {
std::ostringstream suppressionsXml;
supprs.nomsg.dump(suppressionsXml);
reportErr(suppressionsXml.str());
}
reportErr(checkersReport.getXmlReport(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.outputFormat != Settings::OutputFormat::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 (msg.severity == Severity::internal && msg.id == "ctuinfo") {
mCtuInfo += msg.shortMessage() + "\n";
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;
ErrorMessage msgCopy = msg;
msgCopy.guideline = getGuideline(msgCopy.id, mSettings.reportType,
mGuidelineMapping, msgCopy.severity);
msgCopy.classification = getClassification(msgCopy.guideline, mSettings.reportType);
// TODO: there should be no need for verbose and default messages here
// Don't perform redundant reads for these formats, the code is not needed
// for deduplication
const bool noCode = mSettings.outputFormat == Settings::OutputFormat::xml ||
mSettings.outputFormat == Settings::OutputFormat::sarif;
const std::string msgStr =
msgCopy.toString(mSettings.verbose, mSettings.templateFormat,
mSettings.templateLocation, noCode);
// Alert only about unique errors
if (!mSettings.emitDuplicates && !mShownErrors.insert(msgStr).second)
return;
if (mSettings.outputFormat == Settings::OutputFormat::sarif) {
mSarifReport.addFinding(std::move(msgCopy));
} else if (mSettings.outputFormat == Settings::OutputFormat::xml) {
reportErr(msgCopy.toXML());
} else {
reportErr(msgStr);
}
}
/**
* 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;
}
std::string cmd = exe + " " + joinedArgs + " " + redirect;
#ifdef _WIN32
cmd = "\"" + cmd + "\"";
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);
#elif defined(__APPLE__) && defined(__MACH__)
// the W* macros cast to int* on macOS
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;
}
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