310 lines
14 KiB
C++
310 lines
14 KiB
C++
/*
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* Cppcheck - A tool for static C/C++ code analysis
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* Copyright (C) 2007-2013 Daniel Marjamäki and Cppcheck team.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "library.h"
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#include "path.h"
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#include "tinyxml2.h"
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#include "tokenlist.h"
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#include "mathlib.h"
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#include "token.h"
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#include <string>
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#include <algorithm>
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static tinyxml2::XMLError LoadFile(tinyxml2::XMLDocument &doc, const std::string &path)
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{
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FILE *f = fopen(path.c_str(),"rb");
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if (!f)
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return tinyxml2::XML_ERROR_FILE_NOT_FOUND;
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// is file ok? if "path" is a folder then reading from it will cause ferror() to return a non-zero value
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fgetc(f);
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int errorcode = ferror(f);
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fclose(f);
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// if file is ok, try to load it
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return (errorcode == 0) ? doc.LoadFile(path.c_str()) : tinyxml2::XML_ERROR_FILE_NOT_FOUND;
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}
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Library::Library() : allocid(0)
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{
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}
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bool Library::load(const char exename[], const char path[])
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{
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if (std::strchr(path,',') != NULL) {
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bool ret = true;
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std::string p(path);
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while (p.find(",") != std::string::npos) {
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const std::string::size_type pos = p.find(",");
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ret &= load(exename, p.substr(0,pos).c_str());
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p = p.substr(pos+1);
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}
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if (!p.empty())
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ret &= load(exename, p.c_str());
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return ret;
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}
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// open file..
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tinyxml2::XMLDocument doc;
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tinyxml2::XMLError error = LoadFile(doc,path);
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if (error == tinyxml2::XML_ERROR_FILE_NOT_FOUND) {
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// failed to open file.. is there no extension?
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std::string fullfilename(path);
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if (Path::getFilenameExtension(fullfilename) == "") {
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fullfilename += ".cfg";
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error = LoadFile(doc,fullfilename);
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}
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if (error == tinyxml2::XML_ERROR_FILE_NOT_FOUND) {
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// Try to locate the library configuration in the installation folder..
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#ifdef CFGDIR
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const std::string cfgfolder(CFGDIR);
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#else
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if (!exename)
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return false;
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const std::string cfgfolder(Path::fromNativeSeparators(Path::getPathFromFilename(exename)) + "cfg");
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#endif
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const char *sep = (!cfgfolder.empty() && cfgfolder[cfgfolder.size()-1U]=='/' ? "" : "/");
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const std::string filename(cfgfolder + sep + fullfilename);
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error = LoadFile(doc,filename);
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}
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}
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return (error == tinyxml2::XML_NO_ERROR) && load(doc);
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}
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bool Library::loadxmldata(const char xmldata[], std::size_t len)
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{
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tinyxml2::XMLDocument doc;
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return (tinyxml2::XML_NO_ERROR == doc.Parse(xmldata, len)) && load(doc);
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}
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bool Library::load(const tinyxml2::XMLDocument &doc)
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{
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const tinyxml2::XMLElement * const rootnode = doc.FirstChildElement();
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if (rootnode == NULL)
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return false;
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if (strcmp(rootnode->Name(),"def") != 0)
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return false;
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for (const tinyxml2::XMLElement *node = rootnode->FirstChildElement(); node; node = node->NextSiblingElement()) {
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if (strcmp(node->Name(),"memory")==0 || strcmp(node->Name(),"resource")==0) {
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if (strcmp(node->Name(), "memory")==0)
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while (!ismemory(++allocid));
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else
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while (!isresource(++allocid));
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for (const tinyxml2::XMLElement *memorynode = node->FirstChildElement(); memorynode; memorynode = memorynode->NextSiblingElement()) {
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if (strcmp(memorynode->Name(),"alloc")==0) {
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_alloc[memorynode->GetText()] = allocid;
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const char *init = memorynode->Attribute("init");
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if (init && strcmp(init,"false")==0) {
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returnuninitdata.insert(memorynode->GetText());
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}
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} else if (strcmp(memorynode->Name(),"dealloc")==0)
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_dealloc[memorynode->GetText()] = allocid;
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else if (strcmp(memorynode->Name(),"use")==0)
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use.insert(memorynode->GetText());
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else
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return false;
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}
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}
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else if (strcmp(node->Name(),"function")==0) {
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const char *name = node->Attribute("name");
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if (name == NULL)
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return false;
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for (const tinyxml2::XMLElement *functionnode = node->FirstChildElement(); functionnode; functionnode = functionnode->NextSiblingElement()) {
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if (strcmp(functionnode->Name(),"noreturn")==0)
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_noreturn[name] = (strcmp(functionnode->GetText(), "true") == 0);
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else if (strcmp(functionnode->Name(),"leak-ignore")==0)
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leakignore.insert(name);
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else if (strcmp(functionnode->Name(), "arg") == 0 && functionnode->Attribute("nr") != NULL) {
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const int nr = atoi(functionnode->Attribute("nr"));
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bool notbool = false;
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bool notnull = false;
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bool notuninit = false;
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bool formatstr = false;
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bool strz = false;
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std::string valid;
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for (const tinyxml2::XMLElement *argnode = functionnode->FirstChildElement(); argnode; argnode = argnode->NextSiblingElement()) {
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if (strcmp(argnode->Name(), "not-bool") == 0)
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notbool = true;
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else if (strcmp(argnode->Name(), "not-null") == 0)
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notnull = true;
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else if (strcmp(argnode->Name(), "not-uninit") == 0)
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notuninit = true;
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else if (strcmp(argnode->Name(), "formatstr") == 0)
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formatstr = true;
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else if (strcmp(argnode->Name(), "strz") == 0)
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strz = true;
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else if (strcmp(argnode->Name(), "valid") == 0) {
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// Validate the validation expression
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const char *p = argnode->GetText();
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if (!std::isdigit(*p))
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return false;
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for (; *p; p++) {
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if (std::isdigit(*p))
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continue;
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if (*p == '-' && std::isdigit(*(p-1)))
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continue;
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if (*p == ',' && *(p+1) != ',')
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continue;
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return false;
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}
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// Set validation expression
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valid = argnode->GetText();
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}
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else
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return false;
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}
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argumentChecks[name][nr].notbool = notbool;
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argumentChecks[name][nr].notnull = notnull;
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argumentChecks[name][nr].notuninit = notuninit;
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argumentChecks[name][nr].formatstr = formatstr;
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argumentChecks[name][nr].strz = strz;
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argumentChecks[name][nr].valid = valid;
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} else if (strcmp(functionnode->Name(), "ignorefunction") == 0) {
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_ignorefunction.insert(name);
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} else
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return false;
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}
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}
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else if (strcmp(node->Name(), "markup") == 0) {
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const char * const extension = node->Attribute("ext");
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if (!extension)
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return false;
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_markupExtensions.insert(extension);
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const char * const reporterrors = node->Attribute("reporterrors");
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_reporterrors[extension] = (reporterrors && strcmp(reporterrors, "true") == 0);
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const char * const aftercode = node->Attribute("aftercode");
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_processAfterCode[extension] = (aftercode && strcmp(aftercode, "true") == 0);
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for (const tinyxml2::XMLElement *markupnode = node->FirstChildElement(); markupnode; markupnode = markupnode->NextSiblingElement()) {
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if (strcmp(markupnode->Name(), "keywords") == 0) {
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for (const tinyxml2::XMLElement *librarynode = markupnode->FirstChildElement(); librarynode; librarynode = librarynode->NextSiblingElement()) {
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if (strcmp(librarynode->Name(), "keyword") == 0)
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_keywords[extension].insert(librarynode->Attribute("name"));
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else
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return false;
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}
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}
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else if (strcmp(markupnode->Name(), "exported") == 0) {
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for (const tinyxml2::XMLElement *exporter = markupnode->FirstChildElement(); exporter; exporter = exporter->NextSiblingElement()) {
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if (strcmp(exporter->Name(), "exporter") != 0)
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return false;
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const char * const prefix = exporter->Attribute("prefix");
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if (!prefix)
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return false;
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for (const tinyxml2::XMLElement *e = exporter->FirstChildElement(); e; e = e->NextSiblingElement()) {
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if (strcmp(e->Name(), "prefix") == 0)
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_exporters[prefix].addPrefix(e->GetText());
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else if (strcmp(e->Name(), "suffix") == 0)
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_exporters[prefix].addSuffix(e->GetText());
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else
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return false;
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}
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}
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}
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else if (strcmp(markupnode->Name(), "imported") == 0) {
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for (const tinyxml2::XMLElement *librarynode = markupnode->FirstChildElement(); librarynode; librarynode = librarynode->NextSiblingElement()) {
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if (strcmp(librarynode->Name(), "importer") == 0)
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_importers[extension].insert(librarynode->GetText());
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else
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return false;
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}
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}
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else if (strcmp(markupnode->Name(), "reflection") == 0) {
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for (const tinyxml2::XMLElement *reflectionnode = markupnode->FirstChildElement(); reflectionnode; reflectionnode = reflectionnode->NextSiblingElement()) {
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if (strcmp(reflectionnode->Name(), "call") != 0)
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return false;
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const char * const argString = reflectionnode->Attribute("arg");
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if (!argString)
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return false;
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_reflection[extension][reflectionnode->GetText()] = atoi(argString);
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}
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}
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else if (strcmp(markupnode->Name(), "codeblocks") == 0) {
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for (const tinyxml2::XMLElement *blocknode = markupnode->FirstChildElement(); blocknode; blocknode = blocknode->NextSiblingElement()) {
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if (strcmp(blocknode->Name(), "block") == 0)
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_executableblocks[extension].addBlock(blocknode->Attribute("name"));
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else if (strcmp(blocknode->Name(), "structure") == 0) {
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const char * start = blocknode->Attribute("start");
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if (start)
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_executableblocks[extension].setStart(start);
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const char * end = blocknode->Attribute("end");
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if (end)
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_executableblocks[extension].setEnd(end);
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const char * offset = blocknode->Attribute("offset");
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if (offset)
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_executableblocks[extension].setOffset(atoi(offset));
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}
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else
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return false;
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}
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}
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else
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return false;
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}
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}
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else
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return false;
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}
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return true;
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}
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bool Library::isargvalid(const std::string &functionName, int argnr, const MathLib::bigint argvalue) const
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{
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const ArgumentChecks *ac = getarg(functionName, argnr);
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if (!ac || ac->valid.empty())
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return true;
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TokenList tokenList(0);
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std::istringstream istr(ac->valid + ',');
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tokenList.createTokens(istr,"");
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for (const Token *tok = tokenList.front(); tok; tok = tok->next()) {
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if (tok->isNumber() && argvalue == MathLib::toLongNumber(tok->str()))
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return true;
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if (Token::Match(tok, "%num% - %num%") && argvalue >= MathLib::toLongNumber(tok->str()) && argvalue <= MathLib::toLongNumber(tok->strAt(2)))
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return true;
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if (Token::Match(tok, "%num% - ,") && argvalue >= MathLib::toLongNumber(tok->str()))
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return true;
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if ((!tok->previous() || tok->previous()->str() == ",") && Token::Match(tok,"- %num%") && argvalue <= MathLib::toLongNumber(tok->strAt(1)))
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return true;
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}
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return false;
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}
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