661 lines
23 KiB
C++
661 lines
23 KiB
C++
/*
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* Cppcheck - A tool for static C/C++ code analysis
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* Copyright (C) 2007-2022 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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//---------------------------------------------------------------------------
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#ifndef libraryH
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#define libraryH
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//---------------------------------------------------------------------------
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#include "config.h"
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#include "mathlib.h"
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#include "errortypes.h"
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#include "standards.h"
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#include <cstddef>
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#include <map>
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#include <memory>
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#include <set>
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#include <string>
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#include <unordered_map>
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#include <utility>
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#include <vector>
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class Token;
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class Settings;
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namespace tinyxml2 {
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class XMLDocument;
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class XMLElement;
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}
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/// @addtogroup Core
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/// @{
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/**
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* @brief Library definitions handling
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*/
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class CPPCHECKLIB Library {
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friend class TestSymbolDatabase; // For testing only
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public:
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Library();
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enum class ErrorCode { OK, FILE_NOT_FOUND, BAD_XML, UNKNOWN_ELEMENT, MISSING_ATTRIBUTE, BAD_ATTRIBUTE_VALUE, UNSUPPORTED_FORMAT, DUPLICATE_PLATFORM_TYPE, PLATFORM_TYPE_REDEFINED };
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class Error {
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public:
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Error() : errorcode(ErrorCode::OK) {}
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explicit Error(ErrorCode e) : errorcode(e) {}
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template<typename T>
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Error(ErrorCode e, T&& r) : errorcode(e), reason(r) {}
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ErrorCode errorcode;
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std::string reason;
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};
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Error load(const char exename[], const char path[]);
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Error load(const tinyxml2::XMLDocument &doc);
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/** this is used for unit tests */
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bool loadxmldata(const char xmldata[], std::size_t len);
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struct AllocFunc {
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int groupId;
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int arg;
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enum class BufferSize {none,malloc,calloc,strdup};
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BufferSize bufferSize;
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int bufferSizeArg1;
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int bufferSizeArg2;
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int reallocArg;
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bool initData;
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};
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/** get allocation info for function */
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const AllocFunc* getAllocFuncInfo(const Token *tok) const;
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/** get deallocation info for function */
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const AllocFunc* getDeallocFuncInfo(const Token *tok) const;
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/** get reallocation info for function */
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const AllocFunc* getReallocFuncInfo(const Token *tok) const;
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/** get allocation id for function */
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int getAllocId(const Token *tok, int arg) const;
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/** get deallocation id for function */
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int getDeallocId(const Token *tok, int arg) const;
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/** get reallocation id for function */
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int getReallocId(const Token *tok, int arg) const;
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/** get allocation info for function by name (deprecated, use other alloc) */
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const AllocFunc* getAllocFuncInfo(const char name[]) const {
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return getAllocDealloc(mAlloc, name);
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}
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/** get deallocation info for function by name (deprecated, use other alloc) */
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const AllocFunc* getDeallocFuncInfo(const char name[]) const {
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return getAllocDealloc(mDealloc, name);
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}
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/** get allocation id for function by name (deprecated, use other alloc) */
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int allocId(const char name[]) const {
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const AllocFunc* af = getAllocDealloc(mAlloc, name);
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return af ? af->groupId : 0;
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}
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/** get deallocation id for function by name (deprecated, use other alloc) */
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int deallocId(const char name[]) const {
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const AllocFunc* af = getAllocDealloc(mDealloc, name);
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return af ? af->groupId : 0;
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}
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/** set allocation id for function */
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void setalloc(const std::string &functionname, int id, int arg) {
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mAlloc[functionname].groupId = id;
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mAlloc[functionname].arg = arg;
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}
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void setdealloc(const std::string &functionname, int id, int arg) {
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mDealloc[functionname].groupId = id;
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mDealloc[functionname].arg = arg;
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}
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void setrealloc(const std::string &functionname, int id, int arg, int reallocArg = 1) {
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mRealloc[functionname].groupId = id;
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mRealloc[functionname].arg = arg;
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mRealloc[functionname].reallocArg = reallocArg;
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}
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/** add noreturn function setting */
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void setnoreturn(const std::string& funcname, bool noreturn) {
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mNoReturn[funcname] = noreturn ? FalseTrueMaybe::True : FalseTrueMaybe::False;
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}
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static bool isCompliantValidationExpression(const char* p);
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/** is allocation type memory? */
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static bool ismemory(const int id) {
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return ((id > 0) && ((id & 1) == 0));
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}
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static bool ismemory(const AllocFunc* const func) {
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return ((func->groupId > 0) && ((func->groupId & 1) == 0));
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}
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/** is allocation type resource? */
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static bool isresource(const int id) {
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return ((id > 0) && ((id & 1) == 1));
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}
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static bool isresource(const AllocFunc* const func) {
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return ((func->groupId > 0) && ((func->groupId & 1) == 1));
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}
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bool formatstr_function(const Token* ftok) const;
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int formatstr_argno(const Token* ftok) const;
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bool formatstr_scan(const Token* ftok) const;
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bool formatstr_secure(const Token* ftok) const;
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struct NonOverlappingData {
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int ptr1Arg;
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int ptr2Arg;
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int sizeArg;
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int strlenArg;
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};
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const NonOverlappingData* getNonOverlappingData(const Token *ftok) const;
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struct WarnInfo {
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std::string message;
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Standards standards;
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Severity::SeverityType severity;
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};
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std::map<std::string, WarnInfo> functionwarn;
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const WarnInfo* getWarnInfo(const Token* ftok) const;
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// returns true if ftok is not a library function
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bool isNotLibraryFunction(const Token *ftok) const;
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bool matchArguments(const Token *ftok, const std::string &functionName) const;
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enum class UseRetValType { NONE, DEFAULT, ERROR_CODE };
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UseRetValType getUseRetValType(const Token* ftok) const;
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const std::string& returnValue(const Token *ftok) const;
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const std::string& returnValueType(const Token *ftok) const;
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int returnValueContainer(const Token *ftok) const;
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std::vector<MathLib::bigint> unknownReturnValues(const Token *ftok) const;
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bool isnoreturn(const Token *ftok) const;
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bool isnotnoreturn(const Token *ftok) const;
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bool isScopeNoReturn(const Token *end, std::string *unknownFunc) const;
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class Container {
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public:
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Container()
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: type_templateArgNo(-1),
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size_templateArgNo(-1),
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arrayLike_indexOp(false),
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stdStringLike(false),
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stdAssociativeLike(false),
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opLessAllowed(true),
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hasInitializerListConstructor(false),
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unstableErase(false),
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unstableInsert(false),
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view(false)
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{}
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enum class Action {
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RESIZE,
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CLEAR,
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PUSH,
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POP,
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FIND,
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INSERT,
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ERASE,
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CHANGE_CONTENT,
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CHANGE,
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CHANGE_INTERNAL,
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NO_ACTION
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};
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enum class Yield {
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AT_INDEX,
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ITEM,
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BUFFER,
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BUFFER_NT,
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START_ITERATOR,
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END_ITERATOR,
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ITERATOR,
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SIZE,
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EMPTY,
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NO_YIELD
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};
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struct Function {
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Action action;
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Yield yield;
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};
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struct RangeItemRecordTypeItem {
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std::string name;
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int templateParameter;
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};
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std::string startPattern, startPattern2, endPattern, itEndPattern;
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std::map<std::string, Function> functions;
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int type_templateArgNo;
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std::vector<RangeItemRecordTypeItem> rangeItemRecordType;
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int size_templateArgNo;
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bool arrayLike_indexOp;
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bool stdStringLike;
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bool stdAssociativeLike;
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bool opLessAllowed;
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bool hasInitializerListConstructor;
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bool unstableErase;
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bool unstableInsert;
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bool view;
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Action getAction(const std::string& function) const {
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const std::map<std::string, Function>::const_iterator i = functions.find(function);
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if (i != functions.end())
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return i->second.action;
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return Action::NO_ACTION;
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}
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Yield getYield(const std::string& function) const {
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const std::map<std::string, Function>::const_iterator i = functions.find(function);
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if (i != functions.end())
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return i->second.yield;
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return Yield::NO_YIELD;
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}
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static Yield yieldFrom(const std::string& yieldName);
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static Action actionFrom(const std::string& actionName);
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};
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std::map<std::string, Container> containers;
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const Container* detectContainer(const Token* typeStart, bool iterator = false) const;
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const Container* detectContainerOrIterator(const Token* typeStart, bool* isIterator = nullptr) const;
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class ArgumentChecks {
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public:
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ArgumentChecks() :
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notbool(false),
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notnull(false),
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notuninit(-1),
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formatstr(false),
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strz(false),
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optional(false),
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variadic(false),
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iteratorInfo(),
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direction(Direction::DIR_UNKNOWN) {}
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bool notbool;
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bool notnull;
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int notuninit;
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bool formatstr;
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bool strz;
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bool optional;
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bool variadic;
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std::string valid;
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class IteratorInfo {
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public:
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IteratorInfo() : container(0), it(false), first(false), last(false) {}
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int container;
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bool it;
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bool first;
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bool last;
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};
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IteratorInfo iteratorInfo;
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class MinSize {
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public:
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enum class Type { NONE, STRLEN, ARGVALUE, SIZEOF, MUL, VALUE };
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MinSize(Type t, int a) : type(t), arg(a), arg2(0), value(0) {}
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Type type;
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int arg;
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int arg2;
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long long value;
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std::string baseType;
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};
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std::vector<MinSize> minsizes;
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enum class Direction {
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DIR_IN, ///< Input to called function. Data is treated as read-only.
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DIR_OUT, ///< Output to caller. Data is passed by reference or address and is potentially written.
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DIR_INOUT, ///< Input to called function, and output to caller. Data is passed by reference or address and is potentially modified.
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DIR_UNKNOWN ///< direction not known / specified
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};
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Direction direction;
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};
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struct Function {
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std::map<int, ArgumentChecks> argumentChecks; // argument nr => argument data
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bool use;
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bool leakignore;
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bool isconst;
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bool ispure;
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UseRetValType useretval;
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bool ignore; // ignore functions/macros from a library (gtk, qt etc)
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bool formatstr;
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bool formatstr_scan;
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bool formatstr_secure;
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Container::Action containerAction;
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Container::Yield containerYield;
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Function()
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: use(false),
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leakignore(false),
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isconst(false),
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ispure(false),
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useretval(UseRetValType::NONE),
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ignore(false),
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formatstr(false),
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formatstr_scan(false),
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formatstr_secure(false),
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containerAction(Container::Action::NO_ACTION),
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containerYield(Container::Yield::NO_YIELD)
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{}
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};
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const Function *getFunction(const Token *ftok) const;
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std::unordered_map<std::string, Function> functions;
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bool isUse(const std::string& functionName) const;
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bool isLeakIgnore(const std::string& functionName) const;
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bool isFunctionConst(const std::string& functionName, bool pure) const;
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bool isFunctionConst(const Token *ftok) const;
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bool isboolargbad(const Token *ftok, int argnr) const {
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const ArgumentChecks *arg = getarg(ftok, argnr);
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return arg && arg->notbool;
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}
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bool isnullargbad(const Token *ftok, int argnr) const;
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bool isuninitargbad(const Token *ftok, int argnr, int indirect = 0, bool *hasIndirect=nullptr) const;
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bool isargformatstr(const Token *ftok, int argnr) const {
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const ArgumentChecks *arg = getarg(ftok, argnr);
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return arg && arg->formatstr;
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}
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bool isargstrz(const Token *ftok, int argnr) const {
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const ArgumentChecks *arg = getarg(ftok, argnr);
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return arg && arg->strz;
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}
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bool isIntArgValid(const Token *ftok, int argnr, const MathLib::bigint argvalue) const;
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bool isFloatArgValid(const Token *ftok, int argnr, double argvalue) const;
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const std::string& validarg(const Token *ftok, int argnr) const {
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const ArgumentChecks *arg = getarg(ftok, argnr);
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return arg ? arg->valid : emptyString;
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}
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struct InvalidArgValue {
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enum class Type {le, lt, eq, ge, gt, range} type;
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std::string op1;
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std::string op2;
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bool isInt() const {
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return MathLib::isInt(op1);
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}
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};
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const ArgumentChecks::IteratorInfo *getArgIteratorInfo(const Token *ftok, int argnr) const {
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const ArgumentChecks *arg = getarg(ftok, argnr);
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return arg && arg->iteratorInfo.it ? &arg->iteratorInfo : nullptr;
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}
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bool hasminsize(const Token *ftok) const;
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const std::vector<ArgumentChecks::MinSize> *argminsizes(const Token *ftok, int argnr) const {
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const ArgumentChecks *arg = getarg(ftok, argnr);
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return arg ? &arg->minsizes : nullptr;
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}
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ArgumentChecks::Direction getArgDirection(const Token* ftok, int argnr) const;
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bool markupFile(const std::string &path) const;
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bool processMarkupAfterCode(const std::string &path) const;
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const std::set<std::string> &markupExtensions() const {
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return mMarkupExtensions;
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}
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bool reportErrors(const std::string &path) const;
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bool ignorefunction(const std::string &functionName) const;
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bool isexecutableblock(const std::string &file, const std::string &token) const;
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int blockstartoffset(const std::string &file) const;
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const std::string& blockstart(const std::string &file) const;
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const std::string& blockend(const std::string &file) const;
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bool iskeyword(const std::string &file, const std::string &keyword) const;
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bool isexporter(const std::string &prefix) const {
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return mExporters.find(prefix) != mExporters.end();
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}
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bool isexportedprefix(const std::string &prefix, const std::string &token) const {
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const std::map<std::string, ExportedFunctions>::const_iterator it = mExporters.find(prefix);
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return (it != mExporters.end() && it->second.isPrefix(token));
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}
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bool isexportedsuffix(const std::string &prefix, const std::string &token) const {
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const std::map<std::string, ExportedFunctions>::const_iterator it = mExporters.find(prefix);
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return (it != mExporters.end() && it->second.isSuffix(token));
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}
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bool isimporter(const std::string& file, const std::string &importer) const;
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const Token* getContainerFromYield(const Token* tok, Container::Yield yield) const;
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const Token* getContainerFromAction(const Token* tok, Container::Action action) const;
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bool isreflection(const std::string &token) const {
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return mReflection.find(token) != mReflection.end();
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}
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int reflectionArgument(const std::string &token) const {
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const std::map<std::string, int>::const_iterator it = mReflection.find(token);
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if (it != mReflection.end())
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return it->second;
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return -1;
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}
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std::vector<std::string> defines; // to provide some library defines
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struct SmartPointer {
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std::string name;
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bool unique = false;
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};
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std::map<std::string, SmartPointer> smartPointers;
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bool isSmartPointer(const Token *tok) const;
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const SmartPointer* detectSmartPointer(const Token* tok) const;
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struct PodType {
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unsigned int size;
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char sign;
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enum class Type { NO, BOOL, CHAR, SHORT, INT, LONG, LONGLONG } stdtype;
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};
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const struct PodType *podtype(const std::string &name) const {
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const std::unordered_map<std::string, struct PodType>::const_iterator it = mPodTypes.find(name);
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return (it != mPodTypes.end()) ? &(it->second) : nullptr;
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}
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struct PlatformType {
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PlatformType()
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: mSigned(false)
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, mUnsigned(false)
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, mLong(false)
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, mPointer(false)
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, mPtrPtr(false)
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, mConstPtr(false) {}
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bool operator == (const PlatformType & type) const {
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return (mSigned == type.mSigned &&
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mUnsigned == type.mUnsigned &&
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mLong == type.mLong &&
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mPointer == type.mPointer &&
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mPtrPtr == type.mPtrPtr &&
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mConstPtr == type.mConstPtr &&
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mType == type.mType);
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}
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bool operator != (const PlatformType & type) const {
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return !(*this == type);
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}
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std::string mType;
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bool mSigned;
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bool mUnsigned;
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bool mLong;
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bool mPointer;
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bool mPtrPtr;
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bool mConstPtr;
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};
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struct Platform {
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const PlatformType *platform_type(const std::string &name) const {
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const std::map<std::string, struct PlatformType>::const_iterator it = mPlatformTypes.find(name);
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return (it != mPlatformTypes.end()) ? &(it->second) : nullptr;
|
|
}
|
|
std::map<std::string, PlatformType> mPlatformTypes;
|
|
};
|
|
|
|
const PlatformType *platform_type(const std::string &name, const std::string & platform) const {
|
|
const std::map<std::string, Platform>::const_iterator it = mPlatforms.find(platform);
|
|
if (it != mPlatforms.end()) {
|
|
const PlatformType * const type = it->second.platform_type(name);
|
|
if (type)
|
|
return type;
|
|
}
|
|
|
|
const std::map<std::string, PlatformType>::const_iterator it2 = mPlatformTypes.find(name);
|
|
return (it2 != mPlatformTypes.end()) ? &(it2->second) : nullptr;
|
|
}
|
|
|
|
/**
|
|
* Get function name for function call
|
|
*/
|
|
std::string getFunctionName(const Token *ftok) const;
|
|
|
|
static bool isContainerYield(const Token * const cond, Library::Container::Yield y, const std::string& fallback=emptyString);
|
|
|
|
/** Suppress/check a type */
|
|
enum class TypeCheck { def, check, suppress };
|
|
TypeCheck getTypeCheck(const std::string &check, const std::string &typeName) const;
|
|
|
|
private:
|
|
// load a <function> xml node
|
|
Error loadFunction(const tinyxml2::XMLElement * const node, const std::string &name, std::set<std::string> &unknown_elements);
|
|
|
|
class ExportedFunctions {
|
|
public:
|
|
void addPrefix(const std::string& prefix) {
|
|
mPrefixes.insert(prefix);
|
|
}
|
|
void addSuffix(const std::string& suffix) {
|
|
mSuffixes.insert(suffix);
|
|
}
|
|
bool isPrefix(const std::string& prefix) const {
|
|
return (mPrefixes.find(prefix) != mPrefixes.end());
|
|
}
|
|
bool isSuffix(const std::string& suffix) const {
|
|
return (mSuffixes.find(suffix) != mSuffixes.end());
|
|
}
|
|
|
|
private:
|
|
std::set<std::string> mPrefixes;
|
|
std::set<std::string> mSuffixes;
|
|
};
|
|
class CodeBlock {
|
|
public:
|
|
CodeBlock() : mOffset(0) {}
|
|
|
|
void setStart(const char* s) {
|
|
mStart = s;
|
|
}
|
|
void setEnd(const char* e) {
|
|
mEnd = e;
|
|
}
|
|
void setOffset(const int o) {
|
|
mOffset = o;
|
|
}
|
|
void addBlock(const char* blockName) {
|
|
mBlocks.insert(blockName);
|
|
}
|
|
const std::string& start() const {
|
|
return mStart;
|
|
}
|
|
const std::string& end() const {
|
|
return mEnd;
|
|
}
|
|
int offset() const {
|
|
return mOffset;
|
|
}
|
|
bool isBlock(const std::string& blockName) const {
|
|
return mBlocks.find(blockName) != mBlocks.end();
|
|
}
|
|
|
|
private:
|
|
std::string mStart;
|
|
std::string mEnd;
|
|
int mOffset;
|
|
std::set<std::string> mBlocks;
|
|
};
|
|
enum class FalseTrueMaybe { False, True, Maybe };
|
|
int mAllocId;
|
|
std::set<std::string> mFiles;
|
|
std::map<std::string, AllocFunc> mAlloc; // allocation functions
|
|
std::map<std::string, AllocFunc> mDealloc; // deallocation functions
|
|
std::map<std::string, AllocFunc> mRealloc; // reallocation functions
|
|
std::unordered_map<std::string, FalseTrueMaybe> mNoReturn; // is function noreturn?
|
|
std::map<std::string, std::string> mReturnValue;
|
|
std::map<std::string, std::string> mReturnValueType;
|
|
std::map<std::string, int> mReturnValueContainer;
|
|
std::map<std::string, std::vector<MathLib::bigint>> mUnknownReturnValues;
|
|
std::map<std::string, bool> mReportErrors;
|
|
std::map<std::string, bool> mProcessAfterCode;
|
|
std::set<std::string> mMarkupExtensions; // file extensions of markup files
|
|
std::map<std::string, std::set<std::string>> mKeywords; // keywords for code in the library
|
|
std::map<std::string, CodeBlock> mExecutableBlocks; // keywords for blocks of executable code
|
|
std::map<std::string, ExportedFunctions> mExporters; // keywords that export variables/functions to libraries (meta-code/macros)
|
|
std::map<std::string, std::set<std::string>> mImporters; // keywords that import variables/functions
|
|
std::map<std::string, int> mReflection; // invocation of reflection
|
|
std::unordered_map<std::string, struct PodType> mPodTypes; // pod types
|
|
std::map<std::string, PlatformType> mPlatformTypes; // platform independent typedefs
|
|
std::map<std::string, Platform> mPlatforms; // platform dependent typedefs
|
|
std::map<std::pair<std::string,std::string>, TypeCheck> mTypeChecks;
|
|
std::unordered_map<std::string, NonOverlappingData> mNonOverlappingData;
|
|
|
|
const ArgumentChecks * getarg(const Token *ftok, int argnr) const;
|
|
|
|
std::string getFunctionName(const Token *ftok, bool *error) const;
|
|
|
|
static const AllocFunc* getAllocDealloc(const std::map<std::string, AllocFunc> &data, const std::string &name) {
|
|
const std::map<std::string, AllocFunc>::const_iterator it = data.find(name);
|
|
return (it == data.end()) ? nullptr : &it->second;
|
|
}
|
|
};
|
|
|
|
CPPCHECKLIB const Library::Container * getLibraryContainer(const Token * tok);
|
|
|
|
std::shared_ptr<Token> createTokenFromExpression(const std::string& returnValue,
|
|
const Settings* settings,
|
|
std::unordered_map<nonneg int, const Token*>* lookupVarId = nullptr);
|
|
|
|
/// @}
|
|
//---------------------------------------------------------------------------
|
|
#endif // libraryH
|