403 lines
14 KiB
C++
403 lines
14 KiB
C++
/*
|
|
* Cppcheck - A tool for static C/C++ code analysis
|
|
* Copyright (C) 2007-2020 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 "suppressions.h"
|
|
|
|
#include "errorlogger.h"
|
|
#include "mathlib.h"
|
|
#include "path.h"
|
|
#include "utils.h"
|
|
|
|
#include <tinyxml2.h>
|
|
|
|
#include <algorithm>
|
|
#include <cctype> // std::isdigit, std::isalnum, etc
|
|
#include <sstream>
|
|
#include <utility>
|
|
|
|
static bool isAcceptedErrorIdChar(char c)
|
|
{
|
|
switch (c) {
|
|
case '_':
|
|
case '-':
|
|
case '.':
|
|
return true;
|
|
default:
|
|
return std::isalnum(c);
|
|
}
|
|
}
|
|
|
|
std::string Suppressions::parseFile(std::istream &istr)
|
|
{
|
|
// Change '\r' to '\n' in the istr
|
|
std::string filedata;
|
|
std::string line;
|
|
while (std::getline(istr, line))
|
|
filedata += line + "\n";
|
|
std::replace(filedata.begin(), filedata.end(), '\r', '\n');
|
|
|
|
// Parse filedata..
|
|
std::istringstream istr2(filedata);
|
|
while (std::getline(istr2, line)) {
|
|
// Skip empty lines
|
|
if (line.empty())
|
|
continue;
|
|
|
|
// Skip comments
|
|
if (line.length() > 1 && line[0] == '#')
|
|
continue;
|
|
if (line.length() >= 2 && line[0] == '/' && line[1] == '/')
|
|
continue;
|
|
|
|
const std::string errmsg(addSuppressionLine(line));
|
|
if (!errmsg.empty())
|
|
return errmsg;
|
|
}
|
|
|
|
return "";
|
|
}
|
|
|
|
|
|
std::string Suppressions::parseXmlFile(const char *filename)
|
|
{
|
|
tinyxml2::XMLDocument doc;
|
|
const tinyxml2::XMLError error = doc.LoadFile(filename);
|
|
if (error == tinyxml2::XML_ERROR_FILE_NOT_FOUND)
|
|
return "File not found";
|
|
if (error != tinyxml2::XML_SUCCESS)
|
|
return "Failed to parse XML file";
|
|
|
|
const tinyxml2::XMLElement * const rootnode = doc.FirstChildElement();
|
|
for (const tinyxml2::XMLElement * e = rootnode->FirstChildElement(); e; e = e->NextSiblingElement()) {
|
|
if (std::strcmp(e->Name(), "suppress") != 0)
|
|
return "Invalid suppression xml file format, expected <suppress> element but got a <" + std::string(e->Name()) + '>';
|
|
|
|
Suppression s;
|
|
for (const tinyxml2::XMLElement * e2 = e->FirstChildElement(); e2; e2 = e2->NextSiblingElement()) {
|
|
const char *text = e2->GetText() ? e2->GetText() : "";
|
|
if (std::strcmp(e2->Name(), "id") == 0)
|
|
s.errorId = text;
|
|
else if (std::strcmp(e2->Name(), "fileName") == 0)
|
|
s.fileName = text;
|
|
else if (std::strcmp(e2->Name(), "lineNumber") == 0)
|
|
s.lineNumber = std::atoi(text);
|
|
else if (std::strcmp(e2->Name(), "symbolName") == 0)
|
|
s.symbolName = text;
|
|
else
|
|
return "Unknown suppression element <" + std::string(e2->Name()) + ">, expected <id>/<fileName>/<lineNumber>/<symbolName>";
|
|
}
|
|
|
|
const std::string err = addSuppression(s);
|
|
if (!err.empty())
|
|
return err;
|
|
}
|
|
|
|
return "";
|
|
}
|
|
|
|
std::vector<Suppressions::Suppression> Suppressions::parseMultiSuppressComment(const std::string &comment, std::string *errorMessage)
|
|
{
|
|
std::vector<Suppression> suppressions;
|
|
|
|
// If this function is called we assume that comment starts with "cppcheck-suppress[".
|
|
const std::string::size_type start_position = comment.find("[");
|
|
const std::string::size_type end_position = comment.find("]", start_position);
|
|
if (end_position == std::string::npos) {
|
|
if (errorMessage && errorMessage->empty())
|
|
*errorMessage = "Bad multi suppression '" + comment + "'. legal format is cppcheck-suppress[errorId, errorId symbolName=arr, ...]";
|
|
return suppressions;
|
|
}
|
|
|
|
// parse all suppressions
|
|
for (std::string::size_type pos = start_position; pos < end_position;) {
|
|
const std::string::size_type pos1 = pos + 1;
|
|
pos = comment.find(",", pos1);
|
|
const std::string::size_type pos2 = (pos < end_position) ? pos : end_position;
|
|
if (pos1 == pos2)
|
|
continue;
|
|
|
|
Suppression s;
|
|
std::istringstream iss(comment.substr(pos1, pos2-pos1));
|
|
|
|
iss >> s.errorId;
|
|
if (!iss) {
|
|
if (errorMessage && errorMessage->empty())
|
|
*errorMessage = "Bad multi suppression '" + comment + "'. legal format is cppcheck-suppress[errorId, errorId symbolName=arr, ...]";
|
|
suppressions.clear();
|
|
return suppressions;
|
|
}
|
|
|
|
while (iss) {
|
|
std::string word;
|
|
iss >> word;
|
|
if (!iss)
|
|
break;
|
|
if (word.find_first_not_of("+-*/%#;") == std::string::npos)
|
|
break;
|
|
if (word.compare(0, 11, "symbolName=") == 0) {
|
|
s.symbolName = word.substr(11);
|
|
} else {
|
|
if (errorMessage && errorMessage->empty())
|
|
*errorMessage = "Bad multi suppression '" + comment + "'. legal format is cppcheck-suppress[errorId, errorId symbolName=arr, ...]";
|
|
suppressions.clear();
|
|
return suppressions;
|
|
}
|
|
}
|
|
|
|
suppressions.push_back(s);
|
|
}
|
|
|
|
return suppressions;
|
|
}
|
|
|
|
std::string Suppressions::addSuppressionLine(const std::string &line)
|
|
{
|
|
std::istringstream lineStream(line);
|
|
Suppressions::Suppression suppression;
|
|
if (std::getline(lineStream, suppression.errorId, ':')) {
|
|
if (std::getline(lineStream, suppression.fileName)) {
|
|
// If there is not a dot after the last colon in "file" then
|
|
// the colon is a separator and the contents after the colon
|
|
// is a line number..
|
|
|
|
// Get position of last colon
|
|
const std::string::size_type pos = suppression.fileName.rfind(':');
|
|
|
|
// if a colon is found and there is no dot after it..
|
|
if (pos != std::string::npos &&
|
|
suppression.fileName.find('.', pos) == std::string::npos) {
|
|
// Try to parse out the line number
|
|
try {
|
|
std::istringstream istr1(suppression.fileName.substr(pos+1));
|
|
istr1 >> suppression.lineNumber;
|
|
} catch (...) {
|
|
suppression.lineNumber = Suppressions::Suppression::NO_LINE;
|
|
}
|
|
|
|
if (suppression.lineNumber != Suppressions::Suppression::NO_LINE) {
|
|
suppression.fileName.erase(pos);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
suppression.fileName = Path::simplifyPath(suppression.fileName);
|
|
|
|
return addSuppression(suppression);
|
|
}
|
|
|
|
std::string Suppressions::addSuppression(const Suppressions::Suppression &suppression)
|
|
{
|
|
// Check that errorId is valid..
|
|
if (suppression.errorId.empty() && suppression.cppcheckId == 0)
|
|
return "Failed to add suppression. No id.";
|
|
|
|
if (suppression.errorId != "*") {
|
|
for (std::string::size_type pos = 0; pos < suppression.errorId.length(); ++pos) {
|
|
if (suppression.errorId[pos] < 0 || !isAcceptedErrorIdChar(suppression.errorId[pos])) {
|
|
return "Failed to add suppression. Invalid id \"" + suppression.errorId + "\"";
|
|
}
|
|
if (pos == 0 && std::isdigit(suppression.errorId[pos])) {
|
|
return "Failed to add suppression. Invalid id \"" + suppression.errorId + "\"";
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!isValidGlobPattern(suppression.errorId))
|
|
return "Failed to add suppression. Invalid glob pattern '" + suppression.errorId + "'.";
|
|
if (!isValidGlobPattern(suppression.fileName))
|
|
return "Failed to add suppression. Invalid glob pattern '" + suppression.fileName + "'.";
|
|
|
|
mSuppressions.push_back(suppression);
|
|
|
|
return "";
|
|
}
|
|
|
|
void Suppressions::ErrorMessage::setFileName(const std::string &s)
|
|
{
|
|
mFileName = Path::simplifyPath(s);
|
|
}
|
|
|
|
bool Suppressions::Suppression::parseComment(std::string comment, std::string *errorMessage)
|
|
{
|
|
if (comment.size() < 2)
|
|
return false;
|
|
|
|
if (comment.find(';') != std::string::npos)
|
|
comment.erase(comment.find(';'));
|
|
|
|
if (comment.find("//", 2) != std::string::npos)
|
|
comment.erase(comment.find("//",2));
|
|
|
|
if (comment.compare(comment.size() - 2, 2, "*/") == 0)
|
|
comment.erase(comment.size() - 2, 2);
|
|
|
|
std::istringstream iss(comment.substr(2));
|
|
std::string word;
|
|
iss >> word;
|
|
if (word != "cppcheck-suppress")
|
|
return false;
|
|
iss >> errorId;
|
|
if (!iss)
|
|
return false;
|
|
while (iss) {
|
|
iss >> word;
|
|
if (!iss)
|
|
break;
|
|
if (word.find_first_not_of("+-*/%#;") == std::string::npos)
|
|
break;
|
|
if (word.compare(0,11,"symbolName=")==0)
|
|
symbolName = word.substr(11);
|
|
else if (errorMessage && errorMessage->empty())
|
|
*errorMessage = "Bad suppression attribute '" + word + "'. You can write comments in the comment after a ; or //. Valid suppression attributes; symbolName=sym";
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool Suppressions::Suppression::isSuppressed(const Suppressions::ErrorMessage &errmsg) const
|
|
{
|
|
if (cppcheckId > 0 && cppcheckId != errmsg.cppcheckId)
|
|
return false;
|
|
if (!errorId.empty() && !matchglob(errorId, errmsg.errorId))
|
|
return false;
|
|
if (!fileName.empty() && !matchglob(fileName, errmsg.getFileName()))
|
|
return false;
|
|
if (lineNumber != NO_LINE && lineNumber != errmsg.lineNumber)
|
|
return false;
|
|
if (!symbolName.empty()) {
|
|
for (std::string::size_type pos = 0; pos < errmsg.symbolNames.size();) {
|
|
const std::string::size_type pos2 = errmsg.symbolNames.find('\n',pos);
|
|
std::string symname;
|
|
if (pos2 == std::string::npos) {
|
|
symname = errmsg.symbolNames.substr(pos);
|
|
pos = pos2;
|
|
} else {
|
|
symname = errmsg.symbolNames.substr(pos,pos2-pos);
|
|
pos = pos2+1;
|
|
}
|
|
if (matchglob(symbolName, symname))
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool Suppressions::Suppression::isMatch(const Suppressions::ErrorMessage &errmsg)
|
|
{
|
|
if (!isSuppressed(errmsg))
|
|
return false;
|
|
matched = true;
|
|
return true;
|
|
}
|
|
|
|
std::string Suppressions::Suppression::getText() const
|
|
{
|
|
std::string ret;
|
|
if (!errorId.empty())
|
|
ret = errorId;
|
|
if (!fileName.empty())
|
|
ret += " fileName=" + fileName;
|
|
if (lineNumber != NO_LINE)
|
|
ret += " lineNumber=" + MathLib::toString(lineNumber);
|
|
if (!symbolName.empty())
|
|
ret += " symbolName=" + symbolName;
|
|
if (ret.compare(0,1," ")==0)
|
|
return ret.substr(1);
|
|
return ret;
|
|
}
|
|
|
|
bool Suppressions::isSuppressed(const Suppressions::ErrorMessage &errmsg)
|
|
{
|
|
const bool unmatchedSuppression(errmsg.errorId == "unmatchedSuppression");
|
|
for (Suppression &s : mSuppressions) {
|
|
if (unmatchedSuppression && s.errorId != errmsg.errorId)
|
|
continue;
|
|
if (s.isMatch(errmsg))
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool Suppressions::isSuppressedLocal(const Suppressions::ErrorMessage &errmsg)
|
|
{
|
|
const bool unmatchedSuppression(errmsg.errorId == "unmatchedSuppression");
|
|
for (Suppression &s : mSuppressions) {
|
|
if (!s.isLocal())
|
|
continue;
|
|
if (unmatchedSuppression && s.errorId != errmsg.errorId)
|
|
continue;
|
|
if (s.isMatch(errmsg))
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void Suppressions::dump(std::ostream & out) const
|
|
{
|
|
out << " <suppressions>" << std::endl;
|
|
for (const Suppression &suppression : mSuppressions) {
|
|
out << " <suppression";
|
|
out << " errorId=\"" << ErrorLogger::toxml(suppression.errorId) << '"';
|
|
if (!suppression.fileName.empty())
|
|
out << " fileName=\"" << ErrorLogger::toxml(suppression.fileName) << '"';
|
|
if (suppression.lineNumber != Suppression::NO_LINE)
|
|
out << " lineNumber=\"" << suppression.lineNumber << '"';
|
|
if (!suppression.symbolName.empty())
|
|
out << " symbolName=\"" << ErrorLogger::toxml(suppression.symbolName) << '\"';
|
|
out << " />" << std::endl;
|
|
}
|
|
out << " </suppressions>" << std::endl;
|
|
}
|
|
|
|
#include <iostream>
|
|
|
|
std::list<Suppressions::Suppression> Suppressions::getUnmatchedLocalSuppressions(const std::string &file, const bool unusedFunctionChecking) const
|
|
{
|
|
std::list<Suppression> result;
|
|
for (const Suppression &s : mSuppressions) {
|
|
if (s.matched)
|
|
continue;
|
|
if (s.cppcheckId > 0)
|
|
continue;
|
|
if (!unusedFunctionChecking && s.errorId == "unusedFunction")
|
|
continue;
|
|
if (file.empty() || !s.isLocal() || s.fileName != file)
|
|
continue;
|
|
result.push_back(s);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
std::list<Suppressions::Suppression> Suppressions::getUnmatchedGlobalSuppressions(const bool unusedFunctionChecking) const
|
|
{
|
|
std::list<Suppression> result;
|
|
for (const Suppression &s : mSuppressions) {
|
|
if (s.matched)
|
|
continue;
|
|
if (s.cppcheckId > 0)
|
|
continue;
|
|
if (!unusedFunctionChecking && s.errorId == "unusedFunction")
|
|
continue;
|
|
if (s.isLocal())
|
|
continue;
|
|
result.push_back(s);
|
|
}
|
|
return result;
|
|
}
|