cppcheck/lib/checkio.h

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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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*
* 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/>.
*/
//---------------------------------------------------------------------------
#ifndef checkioH
#define checkioH
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//---------------------------------------------------------------------------
#include "check.h"
#include "config.h"
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#include "errortypes.h"
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#include <ostream>
#include <string>
class Function;
class Settings;
class Token;
class Tokenizer;
class Variable;
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class ErrorLogger;
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/// @addtogroup Checks
/// @{
/** @brief %Check input output operations. */
class CPPCHECKLIB CheckIO : public Check {
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public:
/** @brief This constructor is used when registering CheckIO */
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CheckIO() : Check(myName()) {}
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/** @brief This constructor is used when running checks. */
CheckIO(const Tokenizer *tokenizer, const Settings *settings, ErrorLogger *errorLogger)
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: Check(myName(), tokenizer, settings, errorLogger) {}
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/** @brief Run checks on the normal token list */
void runChecks(const Tokenizer *tokenizer, const Settings *settings, ErrorLogger *errorLogger) override {
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CheckIO checkIO(tokenizer, settings, errorLogger);
checkIO.checkWrongPrintfScanfArguments();
checkIO.checkCoutCerrMisusage();
checkIO.checkFileUsage();
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checkIO.invalidScanf();
}
/** @brief %Check for missusage of std::cout */
void checkCoutCerrMisusage();
/** @brief %Check usage of files*/
void checkFileUsage();
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/** @brief scanf can crash if width specifiers are not used */
void invalidScanf();
/** @brief %Checks type and number of arguments given to functions like printf or scanf*/
void checkWrongPrintfScanfArguments();
private:
class ArgumentInfo {
public:
lib: fix a bunch of warnings about differing function arguments in definition and declaration. [lib/token.h:72] -> [lib/token.cpp:36]: (style, inconclusive) Function 'Token' argument 1 names different: declaration 'tokensBack' definition 't'. [lib/token.h:445] -> [lib/token.cpp:497]: (style, inconclusive) Function 'multiCompare' argument 1 names different: declaration 'needle' definition 'tok'. [lib/checkio.h:73] -> [lib/checkio.cpp:1385]: (style, inconclusive) Function 'ArgumentInfo' argument 3 names different: declaration 'isCPP' definition '_isCPP'. [lib/checkother.h:216] -> [lib/checkother.cpp:2136]: (style, inconclusive) Function 'checkComparisonFunctionIsAlwaysTrueOrFalseError' argument 2 names different: declaration 'strFunctionName' definition 'functionName'. [lib/errorlogger.h:214] -> [lib/errorlogger.cpp:51]: (style, inconclusive) Function 'ErrorMessage' argument 2 names different: declaration 'file0' definition 'file0_'. [lib/errorlogger.h:215] -> [lib/errorlogger.cpp:65]: (style, inconclusive) Function 'ErrorMessage' argument 2 names different: declaration 'file0' definition 'file0_'. [lib/library.h:327] -> [lib/library.cpp:1043]: (style, inconclusive) Function 'ignorefunction' argument 1 names different: declaration 'function' definition 'functionName'. [lib/mathlib.h:112] -> [lib/mathlib.cpp:1275]: (style, inconclusive) Function 'isNullValue' argument 1 names different: declaration 'tok' definition 'str'. [lib/preprocessor.h:91] -> [lib/preprocessor.cpp:122]: (style, inconclusive) Function 'setDirectives' argument 1 names different: declaration 'tokens' definition 'tokens1'. [lib/symboldatabase.h:860] -> [lib/symboldatabase.cpp:1801]: (style, inconclusive) Function 'argsMatch' argument 1 names different: declaration 'info' definition 'scope'. [lib/symboldatabase.h:1171] -> [lib/symboldatabase.cpp:2048]: (style, inconclusive) Function 'addClassFunction' argument 1 names different: declaration 'info' definition 'scope'. [lib/symboldatabase.h:1174] -> [lib/symboldatabase.cpp:2208]: (style, inconclusive) Function 'addNewFunction' argument 1 names different: declaration 'info' definition 'scope'. [lib/symboldatabase.h:1090] -> [lib/symboldatabase.cpp:3648]: (style, inconclusive) Function 'findVariableType' argument 2 names different: declaration 'type' definition 'typeTok'. [lib/symboldatabase.h:1101] -> [lib/symboldatabase.cpp:4308]: (style, inconclusive) Function 'findType' argument 1 names different: declaration 'tok' definition 'startTok'. [lib/symboldatabase.h:1176] -> [lib/symboldatabase.cpp:4349]: (style, inconclusive) Function 'findTypeInNested' argument 1 names different: declaration 'tok' definition 'startTok'. [lib/symboldatabase.h:1193] -> [lib/symboldatabase.cpp:4501]: (style, inconclusive) Function 'setValueType' argument 2 names different: declaration 'enumerators' definition 'enumerator'. [lib/path.h:159] -> [lib/path.cpp:247]: (style, inconclusive) Function 'isCPP' argument 1 names different: declaration 'extensionInLowerCase' definition 'path'. [lib/path.h:145] -> [lib/path.cpp:266]: (style, inconclusive) Function 'acceptFile' argument 1 names different: declaration 'filename' definition 'path'.
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ArgumentInfo(const Token *arg, const Settings *settings, bool _isCPP);
~ArgumentInfo();
ArgumentInfo(const ArgumentInfo &) = delete;
ArgumentInfo& operator= (const ArgumentInfo &) = delete;
bool isArrayOrPointer() const;
bool isComplexType() const;
bool isKnownType() const;
bool isStdVectorOrString();
bool isStdContainer(const Token *tok);
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bool isLibraryType(const Settings *settings) const;
const Variable *variableInfo;
const Token *typeToken;
const Function *functionInfo;
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Token *tempToken;
bool element;
bool _template;
bool address;
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bool isCPP;
};
void checkFormatString(const Token * const tok,
const Token * const formatStringTok,
const Token * argListTok,
const bool scan,
const bool scanf_s);
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// Reporting errors..
void coutCerrMisusageError(const Token* tok, const std::string& streamName);
void fflushOnInputStreamError(const Token *tok, const std::string &varname);
void ioWithoutPositioningError(const Token *tok);
void readWriteOnlyFileError(const Token *tok);
void writeReadOnlyFileError(const Token *tok);
void useClosedFileError(const Token *tok);
void seekOnAppendedFileError(const Token *tok);
void incompatibleFileOpenError(const Token *tok, const std::string &filename);
void invalidScanfError(const Token *tok);
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void wrongPrintfScanfArgumentsError(const Token* tok,
const std::string &functionName,
nonneg int numFormat,
nonneg int numFunction);
void wrongPrintfScanfPosixParameterPositionError(const Token* tok, const std::string& functionName,
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nonneg int index, nonneg int numFunction);
void invalidScanfArgTypeError_s(const Token* tok, nonneg int numFormat, const std::string& specifier, const ArgumentInfo* argInfo);
void invalidScanfArgTypeError_int(const Token* tok, nonneg int numFormat, const std::string& specifier, const ArgumentInfo* argInfo, bool isUnsigned);
void invalidScanfArgTypeError_float(const Token* tok, nonneg int numFormat, const std::string& specifier, const ArgumentInfo* argInfo);
void invalidPrintfArgTypeError_s(const Token* tok, nonneg int numFormat, const ArgumentInfo* argInfo);
void invalidPrintfArgTypeError_n(const Token* tok, nonneg int numFormat, const ArgumentInfo* argInfo);
void invalidPrintfArgTypeError_p(const Token* tok, nonneg int numFormat, const ArgumentInfo* argInfo);
void invalidPrintfArgTypeError_uint(const Token* tok, nonneg int numFormat, const std::string& specifier, const ArgumentInfo* argInfo);
void invalidPrintfArgTypeError_sint(const Token* tok, nonneg int numFormat, const std::string& specifier, const ArgumentInfo* argInfo);
void invalidPrintfArgTypeError_float(const Token* tok, nonneg int numFormat, const std::string& specifier, const ArgumentInfo* argInfo);
void invalidLengthModifierError(const Token* tok, nonneg int numFormat, const std::string& modifier);
void invalidScanfFormatWidthError(const Token* tok, nonneg int numFormat, int width, const Variable *var, const std::string& specifier);
static void argumentType(std::ostream & os, const ArgumentInfo * argInfo);
static Severity::SeverityType getSeverity(const ArgumentInfo *argInfo);
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void getErrorMessages(ErrorLogger *errorLogger, const Settings *settings) const override {
CheckIO c(nullptr, settings, errorLogger);
c.coutCerrMisusageError(nullptr, "cout");
c.fflushOnInputStreamError(nullptr, "stdin");
c.ioWithoutPositioningError(nullptr);
c.readWriteOnlyFileError(nullptr);
c.writeReadOnlyFileError(nullptr);
c.useClosedFileError(nullptr);
c.seekOnAppendedFileError(nullptr);
c.incompatibleFileOpenError(nullptr, "tmp");
c.invalidScanfError(nullptr);
c.wrongPrintfScanfArgumentsError(nullptr, "printf",3,2);
c.invalidScanfArgTypeError_s(nullptr, 1, "s", nullptr);
c.invalidScanfArgTypeError_int(nullptr, 1, "d", nullptr, false);
c.invalidScanfArgTypeError_float(nullptr, 1, "f", nullptr);
c.invalidPrintfArgTypeError_s(nullptr, 1, nullptr);
c.invalidPrintfArgTypeError_n(nullptr, 1, nullptr);
c.invalidPrintfArgTypeError_p(nullptr, 1, nullptr);
c.invalidPrintfArgTypeError_uint(nullptr, 1, "u", nullptr);
c.invalidPrintfArgTypeError_sint(nullptr, 1, "i", nullptr);
c.invalidPrintfArgTypeError_float(nullptr, 1, "f", nullptr);
c.invalidLengthModifierError(nullptr, 1, "I");
c.invalidScanfFormatWidthError(nullptr, 10, 5, nullptr, "s");
c.invalidScanfFormatWidthError(nullptr, 99, -1, nullptr, "s");
c.wrongPrintfScanfPosixParameterPositionError(nullptr, "printf", 2, 1);
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}
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static std::string myName() {
return "IO using format string";
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}
std::string classInfo() const override {
return "Check format string input/output operations.\n"
"- Bad usage of the function 'sprintf' (overlapping data)\n"
"- Missing or wrong width specifiers in 'scanf' format string\n"
"- Use a file that has been closed\n"
"- File input/output without positioning results in undefined behaviour\n"
"- Read to a file that has only been opened for writing (or vice versa)\n"
"- Repositioning operation on a file opened in append mode\n"
"- The same file can't be open for read and write at the same time on different streams\n"
"- Using fflush() on an input stream\n"
"- Invalid usage of output stream. For example: 'std::cout << std::cout;'\n"
"- Wrong number of arguments given to 'printf' or 'scanf;'\n";
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}
};
/// @}
//---------------------------------------------------------------------------
#endif // checkioH