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security: added simple gui checking

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This commit is contained in:
Daniel Marjamäki 2009-02-19 17:57:27 +00:00
parent 4e1f19a366
commit efeaac736d
7 changed files with 568 additions and 491 deletions
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46
src/checkvalidate.cpp
View File

@ -43,7 +43,7 @@ void CheckValidate::readnum()
while (tok)
{
unsigned int varId = 0;
// Search for a variable declaration
while (tok)
{
@ -57,20 +57,54 @@ void CheckValidate::readnum()
// Skip ahead a little with tok..
tok = tok->tokAt(2);
// Now take a look at the variable usage..
if (varId == 0)
continue;
// Search for bad input..
for (const Token *tok2 = tok; tok2; tok2 = tok2->next())
{
if (Token::Match(tok2, "cin >> %varid%", varId))
_errorLogger->unvalidatedInput(_tokenizer, tok2, tok2->strAt(2));
_errorLogger->unvalidatedInput(_tokenizer, tok2);
if (Token::Match(tok2, "fscanf ( %var% , %str% , %varid%", varId))
_errorLogger->unvalidatedInput(_tokenizer, tok2, tok2->strAt(6));
_errorLogger->unvalidatedInput(_tokenizer, tok2);
if (Token::Match(tok2, "scanf ( %str% , %varid%", varId))
_errorLogger->unvalidatedInput(_tokenizer, tok2, tok2->strAt(4));
_errorLogger->unvalidatedInput(_tokenizer, tok2);
}
}
}
/**
* Read data from Form/GUI
* Todo: This function must be more customizable to be usable
*/
void CheckValidate::gui()
{
// input control classes whose values are insecure..
const char *inputclass[] = {"TEdit", 0};
// functions that parse value without validating it..
const std::string dangerousfunc("atoi|atof|strtol|strtoul");
for (unsigned int i = 0; inputclass[i]; ++i)
{
const std::string classname(inputclass[i]);
for (const Token *tok = _tokenizer->tokens(); tok; tok = tok->next())
{
// Declaration..
if (Token::Match(tok, (classname + " * %var% ;|=").c_str()))
{
// Variable name..
const std::string varname(tok->strAt(2));
// Getting the value..
const Token *tok2 = Token::findmatch(tok, (dangerousfunc + " ( " + varname + " .").c_str());
if (tok2)
_errorLogger->unvalidatedInput(_tokenizer, tok2);
}
}
}
}

3
src/checkvalidate.h
View File

@ -36,6 +36,9 @@ public:
/** Reading a number from a stream/FILE */
void readnum();
/** Reading Form/GUI data */
void gui();
private:
const Tokenizer *_tokenizer;
ErrorLogger *_errorLogger;

958
src/errorlogger.h
View File

@ -1,479 +1,479 @@
/*
* Cppcheck - A tool for static C/C++ code analysis
* Copyright (C) 2007-2009 Daniel Marjamäki, Reijo Tomperi, Nicolas Le Cam,
* Leandro Penz, Kimmo Varis
*
* 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/
*/
// THIS FILE IS GENERATED BY MACHINE, SEE ../tools/errmsg.cpp !
#ifndef errorloggerH
#define errorloggerH
#include <list>
#include <string>
#include "settings.h"
class Token;
class Tokenizer;
/**
* This is an interface, which the class responsible of error logging
* should implement.
*/
class ErrorLogger
{
public:
/**
* Wrapper for error messages, provided by reportErr()
*/
class ErrorMessage
{
public:
/**
* File name and line number.
*/
class FileLocation
{
public:
std::string file;
unsigned int line;
};
ErrorMessage(const std::list<FileLocation> &callStack, const std::string &severity, const std::string &msg, const std::string &id);
std::string toXML() const;
std::string toText() const;
private:
std::list<FileLocation> _callStack;
std::string _severity;
std::string _msg;
std::string _id;
};
ErrorLogger() { }
virtual ~ErrorLogger() { }
/**
* Information about progress is directed here.
* Override this to receive the progress messages.
*
* @param outmsg, E.g. "Checking main.cpp..."
*/
virtual void reportOut(const std::string &outmsg) = 0;
/**
* Information about found errors and warnings is directed
* here. Override this to receive the errormessages.
*
* @param msg Location and other information about the found.
* error
*/
virtual void reportErr(const ErrorLogger::ErrorMessage &msg) = 0;
void arrayIndexOutOfBounds(const Tokenizer *tokenizer, const std::list<const Token *> &Location)
{
_writemsg(tokenizer, Location, "all", "Array index out of bounds", "arrayIndexOutOfBounds");
}
static bool arrayIndexOutOfBounds(const Settings &s)
{
return s._showAll;
}
void bufferOverrun(const Tokenizer *tokenizer, const Token *Location)
{
_writemsg(tokenizer, Location, "all", "Buffer overrun", "bufferOverrun");
}
static bool bufferOverrun(const Settings &s)
{
return s._showAll;
}
void outOfBounds(const Tokenizer *tokenizer, const Token *Location, const std::string &what)
{
_writemsg(tokenizer, Location, "error", "" + what + " is out of bounds", "outOfBounds");
}
static bool outOfBounds()
{
return true;
}
void stlOutOfBounds(const Tokenizer *tokenizer, const Token *Location, const std::string &what)
{
_writemsg(tokenizer, Location, "error", "" + what + " is out of bounds", "stlOutOfBounds");
}
static bool stlOutOfBounds()
{
return true;
}
void noConstructor(const Tokenizer *tokenizer, const Token *Location, const std::string &classname)
{
_writemsg(tokenizer, Location, "style", "The class '" + classname + "' has no constructor", "noConstructor");
}
static bool noConstructor(const Settings &s)
{
return s._checkCodingStyle;
}
void uninitVar(const Tokenizer *tokenizer, const Token *Location, const std::string &classname, const std::string &varname)
{
_writemsg(tokenizer, Location, "style", "Member variable not initialized in the constructor '" + classname + "::" + varname + "'", "uninitVar");
}
static bool uninitVar(const Settings &s)
{
return s._checkCodingStyle;
}
void unusedPrivateFunction(const Tokenizer *tokenizer, const Token *Location, const std::string &classname, const std::string &funcname)
{
_writemsg(tokenizer, Location, "style", "Unused private function '" + classname + "::" + funcname + "'", "unusedPrivateFunction");
}
static bool unusedPrivateFunction(const Settings &s)
{
return s._checkCodingStyle;
}
void memsetClass(const Tokenizer *tokenizer, const Token *Location, const std::string &memfunc)
{
_writemsg(tokenizer, Location, "error", "Using '" + memfunc + "' on class", "memsetClass");
}
static bool memsetClass()
{
return true;
}
void memsetStruct(const Tokenizer *tokenizer, const Token *Location, const std::string &memfunc, const std::string &classname)
{
_writemsg(tokenizer, Location, "error", "Using '" + memfunc + "' on struct that contains a 'std::" + classname + "'", "memsetStruct");
}
static bool memsetStruct()
{
return true;
}
void operatorEq(const Tokenizer *tokenizer, const Token *Location)
{
_writemsg(tokenizer, Location, "style", "'operator=' should return something", "operatorEq");
}
static bool operatorEq(const Settings &s)
{
return s._checkCodingStyle;
}
void virtualDestructor(const Tokenizer *tokenizer, const Token *Location, const std::string &Base, const std::string &Derived)
{
_writemsg(tokenizer, Location, "error", "Class " + Base + " which is inherited by class " + Derived + " does not have a virtual destructor", "virtualDestructor");
}
static bool virtualDestructor()
{
return true;
}
void unusedFunction(const std::string &filename, const std::string &funcname)
{
_writemsg("[" + filename + "]: The function '" + funcname + "' is never used", "unusedFunction");
}
static bool unusedFunction(const Settings &s)
{
return s._checkCodingStyle || s._showAll;
}
void mismatchAllocDealloc(const Tokenizer *tokenizer, const std::list<const Token *> &Location, const std::string &varname)
{
_writemsg(tokenizer, Location, "error", "Mismatching allocation and deallocation: " + varname + "", "mismatchAllocDealloc");
}
static bool mismatchAllocDealloc()
{
return true;
}
void memleak(const Tokenizer *tokenizer, const Token *Location, const std::string &varname)
{
_writemsg(tokenizer, Location, "error", "Memory leak: " + varname + "", "memleak");
}
static bool memleak()
{
return true;
}
void memleakall(const Tokenizer *tokenizer, const Token *Location, const std::string &varname)
{
_writemsg(tokenizer, Location, "all", "Memory leak: " + varname + "", "memleakall");
}
static bool memleakall(const Settings &s)
{
return s._showAll;
}
void resourceLeak(const Tokenizer *tokenizer, const Token *Location, const std::string &varname)
{
_writemsg(tokenizer, Location, "error", "Resource leak: " + varname + "", "resourceLeak");
}
static bool resourceLeak()
{
return true;
}
void deallocDealloc(const Tokenizer *tokenizer, const Token *Location, const std::string &varname)
{
_writemsg(tokenizer, Location, "error", "Deallocating a deallocated pointer: " + varname + "", "deallocDealloc");
}
static bool deallocDealloc()
{
return true;
}
void deallocuse(const Tokenizer *tokenizer, const Token *Location, const std::string &varname)
{
_writemsg(tokenizer, Location, "error", "Using '" + varname + "' after it is deallocated / released", "deallocuse");
}
static bool deallocuse()
{
return true;
}
void mismatchSize(const Tokenizer *tokenizer, const Token *Location, const std::string &sz)
{
_writemsg(tokenizer, Location, "error", "The given size " + sz + " is mismatching", "mismatchSize");
}
static bool mismatchSize()
{
return true;
}
void cstyleCast(const Tokenizer *tokenizer, const Token *Location)
{
_writemsg(tokenizer, Location, "style", "C-style pointer casting", "cstyleCast");
}
static bool cstyleCast(const Settings &s)
{
return s._checkCodingStyle;
}
void redundantIfDelete0(const Tokenizer *tokenizer, const Token *Location)
{
_writemsg(tokenizer, Location, "style", "Redundant condition. It is safe to deallocate a NULL pointer", "redundantIfDelete0");
}
static bool redundantIfDelete0(const Settings &s)
{
return s._checkCodingStyle;
}
void redundantIfRemove(const Tokenizer *tokenizer, const Token *Location)
{
_writemsg(tokenizer, Location, "style", "Redundant condition. The remove function in the STL will not do anything if element doesn't exist", "redundantIfRemove");
}
static bool redundantIfRemove(const Settings &s)
{
return s._checkCodingStyle;
}
void dangerousUsageStrtol(const Tokenizer *tokenizer, const Token *Location)
{
_writemsg(tokenizer, Location, "error", "Invalid radix in call to strtol or strtoul. Must be 0 or 2-36", "dangerousUsageStrtol");
}
static bool dangerousUsageStrtol()
{
return true;
}
void ifNoAction(const Tokenizer *tokenizer, const Token *Location)
{
_writemsg(tokenizer, Location, "style", "Found redundant if condition - 'if (condition);'", "ifNoAction");
}
static bool ifNoAction(const Settings &s)
{
return s._checkCodingStyle;
}
void sprintfOverlappingData(const Tokenizer *tokenizer, const Token *Location, const std::string &varname)
{
_writemsg(tokenizer, Location, "error", "Overlapping data buffer " + varname + "", "sprintfOverlappingData");
}
static bool sprintfOverlappingData()
{
return true;
}
void udivError(const Tokenizer *tokenizer, const Token *Location)
{
_writemsg(tokenizer, Location, "error", "Unsigned division. The result will be wrong.", "udivError");
}
static bool udivError()
{
return true;
}
void udivWarning(const Tokenizer *tokenizer, const Token *Location)
{
_writemsg(tokenizer, Location, "all style", "Warning: Division with signed and unsigned operators", "udivWarning");
}
static bool udivWarning(const Settings &s)
{
return s._checkCodingStyle || s._showAll;
}
void unusedStructMember(const Tokenizer *tokenizer, const Token *Location, const std::string &structname, const std::string &varname)
{
_writemsg(tokenizer, Location, "style", "struct or union member '" + structname + "::" + varname + "' is never used", "unusedStructMember");
}
static bool unusedStructMember(const Settings &s)
{
return s._checkCodingStyle;
}
void passedByValue(const Tokenizer *tokenizer, const Token *Location, const std::string &parname)
{
_writemsg(tokenizer, Location, "style", "Function parameter '" + parname + "' is passed by value. It could be passed by reference instead.", "passedByValue");
}
static bool passedByValue(const Settings &s)
{
return s._checkCodingStyle;
}
void constStatement(const Tokenizer *tokenizer, const Token *Location, const std::string &type)
{
_writemsg(tokenizer, Location, "style", "Redundant code: Found a statement that begins with " + type + " constant", "constStatement");
}
static bool constStatement(const Settings &s)
{
return s._checkCodingStyle;
}
void charArrayIndex(const Tokenizer *tokenizer, const Token *Location)
{
_writemsg(tokenizer, Location, "style", "Warning - using char variable as array index", "charArrayIndex");
}
static bool charArrayIndex(const Settings &s)
{
return s._checkCodingStyle;
}
void charBitOp(const Tokenizer *tokenizer, const Token *Location)
{
_writemsg(tokenizer, Location, "style", "Warning - using char variable in bit operation", "charBitOp");
}
static bool charBitOp(const Settings &s)
{
return s._checkCodingStyle;
}
void variableScope(const Tokenizer *tokenizer, const Token *Location, const std::string &varname)
{
_writemsg(tokenizer, Location, "never", "The scope of the variable " + varname + " can be limited", "variableScope");
}
static bool variableScope()
{
return false;
}
void conditionAlwaysTrueFalse(const Tokenizer *tokenizer, const Token *Location, const std::string &truefalse)
{
_writemsg(tokenizer, Location, "style", "Condition is always " + truefalse + "", "conditionAlwaysTrueFalse");
}
static bool conditionAlwaysTrueFalse(const Settings &s)
{
return s._checkCodingStyle;
}
void strPlusChar(const Tokenizer *tokenizer, const Token *Location)
{
_writemsg(tokenizer, Location, "error", "Unusual pointer arithmetic", "strPlusChar");
}
static bool strPlusChar()
{
return true;
}
void returnLocalVariable(const Tokenizer *tokenizer, const Token *Location)
{
_writemsg(tokenizer, Location, "error", "Returning pointer to local array variable", "returnLocalVariable");
}
static bool returnLocalVariable()
{
return true;
}
void dangerousFunctionmktemp(const Tokenizer *tokenizer, const Token *Location)
{
_writemsg(tokenizer, Location, "style", "Found 'mktemp'. You should use 'mkstemp' instead", "dangerousFunctionmktemp");
}
static bool dangerousFunctionmktemp(const Settings &s)
{
return s._checkCodingStyle;
}
void dangerousFunctiongets(const Tokenizer *tokenizer, const Token *Location)
{
_writemsg(tokenizer, Location, "style", "Found 'gets'. You should use 'fgets' instead", "dangerousFunctiongets");
}
static bool dangerousFunctiongets(const Settings &s)
{
return s._checkCodingStyle;
}
void dangerousFunctionscanf(const Tokenizer *tokenizer, const Token *Location)
{
_writemsg(tokenizer, Location, "style", "Found 'scanf'. You should use 'fgets' instead", "dangerousFunctionscanf");
}
static bool dangerousFunctionscanf(const Settings &s)
{
return s._checkCodingStyle;
}
void iteratorUsage(const Tokenizer *tokenizer, const Token *Location, const std::string &container1, const std::string &container2)
{
_writemsg(tokenizer, Location, "error", "Same iterator is used with both " + container1 + " and " + container2 + "", "iteratorUsage");
}
static bool iteratorUsage()
{
return true;
}
void erase(const Tokenizer *tokenizer, const Token *Location)
{
_writemsg(tokenizer, Location, "error", "Dangerous usage of erase", "erase");
}
static bool erase()
{
return true;
}
void pushback(const Tokenizer *tokenizer, const Token *Location, const std::string &iterator_name)
{
_writemsg(tokenizer, Location, "error", "After push_back or push_front, the iterator '" + iterator_name + "' may be invalid", "pushback");
}
static bool pushback()
{
return true;
}
void unvalidatedInput(const Tokenizer *tokenizer, const Token *Location, const std::string &varname)
{
_writemsg(tokenizer, Location, "all", "Unvalidated input: " + varname + "", "unvalidatedInput");
}
static bool unvalidatedInput(const Settings &s)
{
return s._showAll;
}
static std::string callStackToString(const std::list<ErrorLogger::ErrorMessage::FileLocation> &callStack);
private:
void _writemsg(const Tokenizer *tokenizer, const Token *tok, const char severity[], const std::string msg, const std::string &id);
void _writemsg(const Tokenizer *tokenizer, const std::list<const Token *> &callstack, const char severity[], const std::string msg, const std::string &id);
void _writemsg(const std::string msg, const std::string &id);
};
#endif
/*
* Cppcheck - A tool for static C/C++ code analysis
* Copyright (C) 2007-2009 Daniel Marjamäki, Reijo Tomperi, Nicolas Le Cam,
* Leandro Penz, Kimmo Varis
*
* 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/
*/
// THIS FILE IS GENERATED BY MACHINE, SEE ../tools/errmsg.cpp !
#ifndef errorloggerH
#define errorloggerH
#include <list>
#include <string>
#include "settings.h"
class Token;
class Tokenizer;
/**
* This is an interface, which the class responsible of error logging
* should implement.
*/
class ErrorLogger
{
public:
/**
* Wrapper for error messages, provided by reportErr()
*/
class ErrorMessage
{
public:
/**
* File name and line number.
*/
class FileLocation
{
public:
std::string file;
unsigned int line;
};
ErrorMessage(const std::list<FileLocation> &callStack, const std::string &severity, const std::string &msg, const std::string &id);
std::string toXML() const;
std::string toText() const;
private:
std::list<FileLocation> _callStack;
std::string _severity;
std::string _msg;
std::string _id;
};
ErrorLogger() { }
virtual ~ErrorLogger() { }
/**
* Information about progress is directed here.
* Override this to receive the progress messages.
*
* @param outmsg, E.g. "Checking main.cpp..."
*/
virtual void reportOut(const std::string &outmsg) = 0;
/**
* Information about found errors and warnings is directed
* here. Override this to receive the errormessages.
*
* @param msg Location and other information about the found.
* error
*/
virtual void reportErr(const ErrorLogger::ErrorMessage &msg) = 0;
void arrayIndexOutOfBounds(const Tokenizer *tokenizer, const std::list<const Token *> &Location)
{
_writemsg(tokenizer, Location, "all", "Array index out of bounds", "arrayIndexOutOfBounds");
}
static bool arrayIndexOutOfBounds(const Settings &s)
{
return s._showAll;
}
void bufferOverrun(const Tokenizer *tokenizer, const Token *Location)
{
_writemsg(tokenizer, Location, "all", "Buffer overrun", "bufferOverrun");
}
static bool bufferOverrun(const Settings &s)
{
return s._showAll;
}
void outOfBounds(const Tokenizer *tokenizer, const Token *Location, const std::string &what)
{
_writemsg(tokenizer, Location, "error", "" + what + " is out of bounds", "outOfBounds");
}
static bool outOfBounds()
{
return true;
}
void stlOutOfBounds(const Tokenizer *tokenizer, const Token *Location, const std::string &what)
{
_writemsg(tokenizer, Location, "error", "" + what + " is out of bounds", "stlOutOfBounds");
}
static bool stlOutOfBounds()
{
return true;
}
void noConstructor(const Tokenizer *tokenizer, const Token *Location, const std::string &classname)
{
_writemsg(tokenizer, Location, "style", "The class '" + classname + "' has no constructor", "noConstructor");
}
static bool noConstructor(const Settings &s)
{
return s._checkCodingStyle;
}
void uninitVar(const Tokenizer *tokenizer, const Token *Location, const std::string &classname, const std::string &varname)
{
_writemsg(tokenizer, Location, "style", "Member variable not initialized in the constructor '" + classname + "::" + varname + "'", "uninitVar");
}
static bool uninitVar(const Settings &s)
{
return s._checkCodingStyle;
}
void unusedPrivateFunction(const Tokenizer *tokenizer, const Token *Location, const std::string &classname, const std::string &funcname)
{
_writemsg(tokenizer, Location, "style", "Unused private function '" + classname + "::" + funcname + "'", "unusedPrivateFunction");
}
static bool unusedPrivateFunction(const Settings &s)
{
return s._checkCodingStyle;
}
void memsetClass(const Tokenizer *tokenizer, const Token *Location, const std::string &memfunc)
{
_writemsg(tokenizer, Location, "error", "Using '" + memfunc + "' on class", "memsetClass");
}
static bool memsetClass()
{
return true;
}
void memsetStruct(const Tokenizer *tokenizer, const Token *Location, const std::string &memfunc, const std::string &classname)
{
_writemsg(tokenizer, Location, "error", "Using '" + memfunc + "' on struct that contains a 'std::" + classname + "'", "memsetStruct");
}
static bool memsetStruct()
{
return true;
}
void operatorEq(const Tokenizer *tokenizer, const Token *Location)
{
_writemsg(tokenizer, Location, "style", "'operator=' should return something", "operatorEq");
}
static bool operatorEq(const Settings &s)
{
return s._checkCodingStyle;
}
void virtualDestructor(const Tokenizer *tokenizer, const Token *Location, const std::string &Base, const std::string &Derived)
{
_writemsg(tokenizer, Location, "error", "Class " + Base + " which is inherited by class " + Derived + " does not have a virtual destructor", "virtualDestructor");
}
static bool virtualDestructor()
{
return true;
}
void unusedFunction(const std::string &filename, const std::string &funcname)
{
_writemsg("[" + filename + "]: The function '" + funcname + "' is never used", "unusedFunction");
}
static bool unusedFunction(const Settings &s)
{
return s._checkCodingStyle || s._showAll;
}
void mismatchAllocDealloc(const Tokenizer *tokenizer, const std::list<const Token *> &Location, const std::string &varname)
{
_writemsg(tokenizer, Location, "error", "Mismatching allocation and deallocation: " + varname + "", "mismatchAllocDealloc");
}
static bool mismatchAllocDealloc()
{
return true;
}
void memleak(const Tokenizer *tokenizer, const Token *Location, const std::string &varname)
{
_writemsg(tokenizer, Location, "error", "Memory leak: " + varname + "", "memleak");
}
static bool memleak()
{
return true;
}
void memleakall(const Tokenizer *tokenizer, const Token *Location, const std::string &varname)
{
_writemsg(tokenizer, Location, "all", "Memory leak: " + varname + "", "memleakall");
}
static bool memleakall(const Settings &s)
{
return s._showAll;
}
void resourceLeak(const Tokenizer *tokenizer, const Token *Location, const std::string &varname)
{
_writemsg(tokenizer, Location, "error", "Resource leak: " + varname + "", "resourceLeak");
}
static bool resourceLeak()
{
return true;
}
void deallocDealloc(const Tokenizer *tokenizer, const Token *Location, const std::string &varname)
{
_writemsg(tokenizer, Location, "error", "Deallocating a deallocated pointer: " + varname + "", "deallocDealloc");
}
static bool deallocDealloc()
{
return true;
}
void deallocuse(const Tokenizer *tokenizer, const Token *Location, const std::string &varname)
{
_writemsg(tokenizer, Location, "error", "Using '" + varname + "' after it is deallocated / released", "deallocuse");
}
static bool deallocuse()
{
return true;
}
void mismatchSize(const Tokenizer *tokenizer, const Token *Location, const std::string &sz)
{
_writemsg(tokenizer, Location, "error", "The given size " + sz + " is mismatching", "mismatchSize");
}
static bool mismatchSize()
{
return true;
}
void cstyleCast(const Tokenizer *tokenizer, const Token *Location)
{
_writemsg(tokenizer, Location, "style", "C-style pointer casting", "cstyleCast");
}
static bool cstyleCast(const Settings &s)
{
return s._checkCodingStyle;
}
void redundantIfDelete0(const Tokenizer *tokenizer, const Token *Location)
{
_writemsg(tokenizer, Location, "style", "Redundant condition. It is safe to deallocate a NULL pointer", "redundantIfDelete0");
}
static bool redundantIfDelete0(const Settings &s)
{
return s._checkCodingStyle;
}
void redundantIfRemove(const Tokenizer *tokenizer, const Token *Location)
{
_writemsg(tokenizer, Location, "style", "Redundant condition. The remove function in the STL will not do anything if element doesn't exist", "redundantIfRemove");
}
static bool redundantIfRemove(const Settings &s)
{
return s._checkCodingStyle;
}
void dangerousUsageStrtol(const Tokenizer *tokenizer, const Token *Location)
{
_writemsg(tokenizer, Location, "error", "Invalid radix in call to strtol or strtoul. Must be 0 or 2-36", "dangerousUsageStrtol");
}
static bool dangerousUsageStrtol()
{
return true;
}
void ifNoAction(const Tokenizer *tokenizer, const Token *Location)
{
_writemsg(tokenizer, Location, "style", "Found redundant if condition - 'if (condition);'", "ifNoAction");
}
static bool ifNoAction(const Settings &s)
{
return s._checkCodingStyle;
}
void sprintfOverlappingData(const Tokenizer *tokenizer, const Token *Location, const std::string &varname)
{
_writemsg(tokenizer, Location, "error", "Overlapping data buffer " + varname + "", "sprintfOverlappingData");
}
static bool sprintfOverlappingData()
{
return true;
}
void udivError(const Tokenizer *tokenizer, const Token *Location)
{
_writemsg(tokenizer, Location, "error", "Unsigned division. The result will be wrong.", "udivError");
}
static bool udivError()
{
return true;
}
void udivWarning(const Tokenizer *tokenizer, const Token *Location)
{
_writemsg(tokenizer, Location, "all style", "Warning: Division with signed and unsigned operators", "udivWarning");
}
static bool udivWarning(const Settings &s)
{
return s._checkCodingStyle || s._showAll;
}
void unusedStructMember(const Tokenizer *tokenizer, const Token *Location, const std::string &structname, const std::string &varname)
{
_writemsg(tokenizer, Location, "style", "struct or union member '" + structname + "::" + varname + "' is never used", "unusedStructMember");
}
static bool unusedStructMember(const Settings &s)
{
return s._checkCodingStyle;
}
void passedByValue(const Tokenizer *tokenizer, const Token *Location, const std::string &parname)
{
_writemsg(tokenizer, Location, "style", "Function parameter '" + parname + "' is passed by value. It could be passed by reference instead.", "passedByValue");
}
static bool passedByValue(const Settings &s)
{
return s._checkCodingStyle;
}
void constStatement(const Tokenizer *tokenizer, const Token *Location, const std::string &type)
{
_writemsg(tokenizer, Location, "style", "Redundant code: Found a statement that begins with " + type + " constant", "constStatement");
}
static bool constStatement(const Settings &s)
{
return s._checkCodingStyle;
}
void charArrayIndex(const Tokenizer *tokenizer, const Token *Location)
{
_writemsg(tokenizer, Location, "style", "Warning - using char variable as array index", "charArrayIndex");
}
static bool charArrayIndex(const Settings &s)
{
return s._checkCodingStyle;
}
void charBitOp(const Tokenizer *tokenizer, const Token *Location)
{
_writemsg(tokenizer, Location, "style", "Warning - using char variable in bit operation", "charBitOp");
}
static bool charBitOp(const Settings &s)
{
return s._checkCodingStyle;
}
void variableScope(const Tokenizer *tokenizer, const Token *Location, const std::string &varname)
{
_writemsg(tokenizer, Location, "never", "The scope of the variable " + varname + " can be limited", "variableScope");
}
static bool variableScope()
{
return false;
}
void conditionAlwaysTrueFalse(const Tokenizer *tokenizer, const Token *Location, const std::string &truefalse)
{
_writemsg(tokenizer, Location, "style", "Condition is always " + truefalse + "", "conditionAlwaysTrueFalse");
}
static bool conditionAlwaysTrueFalse(const Settings &s)
{
return s._checkCodingStyle;
}
void strPlusChar(const Tokenizer *tokenizer, const Token *Location)
{
_writemsg(tokenizer, Location, "error", "Unusual pointer arithmetic", "strPlusChar");
}
static bool strPlusChar()
{
return true;
}
void returnLocalVariable(const Tokenizer *tokenizer, const Token *Location)
{
_writemsg(tokenizer, Location, "error", "Returning pointer to local array variable", "returnLocalVariable");
}
static bool returnLocalVariable()
{
return true;
}
void dangerousFunctionmktemp(const Tokenizer *tokenizer, const Token *Location)
{
_writemsg(tokenizer, Location, "style", "Found 'mktemp'. You should use 'mkstemp' instead", "dangerousFunctionmktemp");
}
static bool dangerousFunctionmktemp(const Settings &s)
{
return s._checkCodingStyle;
}
void dangerousFunctiongets(const Tokenizer *tokenizer, const Token *Location)
{
_writemsg(tokenizer, Location, "style", "Found 'gets'. You should use 'fgets' instead", "dangerousFunctiongets");
}
static bool dangerousFunctiongets(const Settings &s)
{
return s._checkCodingStyle;
}
void dangerousFunctionscanf(const Tokenizer *tokenizer, const Token *Location)
{
_writemsg(tokenizer, Location, "style", "Found 'scanf'. You should use 'fgets' instead", "dangerousFunctionscanf");
}
static bool dangerousFunctionscanf(const Settings &s)
{
return s._checkCodingStyle;
}
void iteratorUsage(const Tokenizer *tokenizer, const Token *Location, const std::string &container1, const std::string &container2)
{
_writemsg(tokenizer, Location, "error", "Same iterator is used with both " + container1 + " and " + container2 + "", "iteratorUsage");
}
static bool iteratorUsage()
{
return true;
}
void erase(const Tokenizer *tokenizer, const Token *Location)
{
_writemsg(tokenizer, Location, "error", "Dangerous usage of erase", "erase");
}
static bool erase()
{
return true;
}
void pushback(const Tokenizer *tokenizer, const Token *Location, const std::string &iterator_name)
{
_writemsg(tokenizer, Location, "error", "After push_back or push_front, the iterator '" + iterator_name + "' may be invalid", "pushback");
}
static bool pushback()
{
return true;
}
void unvalidatedInput(const Tokenizer *tokenizer, const Token *Location)
{
_writemsg(tokenizer, Location, "security", "Unvalidated input", "unvalidatedInput");
}
static bool unvalidatedInput(const Settings &s)
{
return s._security;
}
static std::string callStackToString(const std::list<ErrorLogger::ErrorMessage::FileLocation> &callStack);
private:
void _writemsg(const Tokenizer *tokenizer, const Token *tok, const char severity[], const std::string msg, const std::string &id);
void _writemsg(const Tokenizer *tokenizer, const std::list<const Token *> &callstack, const char severity[], const std::string msg, const std::string &id);
void _writemsg(const std::string msg, const std::string &id);
};
#endif

1
src/settings.cpp
View File

@ -29,6 +29,7 @@ Settings::Settings()
_force = false;
_xml = false;
_unusedFunctions = false;
_security = false;
}
Settings::~Settings()

3
src/settings.h
View File

@ -45,6 +45,9 @@ public:
/** Checking if there are unused functions */
bool _unusedFunctions;
/** Security checks */
bool _security;
};
#endif // SETTINGS_H

35
test/testvalidate.cpp
View File

@ -37,6 +37,7 @@ private:
void run()
{
TEST_CASE(stdin1);
TEST_CASE(gui);
}
void check(const char code[])
@ -63,7 +64,39 @@ private:
" int i;\n"
" std::cin >> i;\n"
"}\n");
ASSERT_EQUALS("[test.cpp:4]: (all) Unvalidated input: i\n", errout.str());
ASSERT_EQUALS("[test.cpp:4]: (security) Unvalidated input\n", errout.str());
}
void checkGui(const char code[])
{
// Tokenize..
Tokenizer tokenizer;
std::istringstream istr(code);
tokenizer.tokenize(istr, "test.cpp");
tokenizer.simplifyTokenList();
// Clear the error buffer..
errout.str("");
// Check char variable usage..
CheckValidate checkValidate(&tokenizer, this);
checkValidate.gui();
}
void gui()
{
// Reading the value of a textbox and converting it into an int without any validation..
checkGui("void onok()\n"
"{\n"
" TEdit *editAbc;\n"
" abc = atoi(editAbc->Text.c_str());\n"
"}\n");
ASSERT_EQUALS("[test.cpp:4]: (security) Unvalidated input\n", errout.str());
}
};

13
tools/errmsg.cpp
View File

@ -25,7 +25,7 @@
class Message
{
public:
enum Settings {error, all, style, style_all, never};
enum Settings {error, all, style, style_all, security, never};
Message(std::string funcname, Settings settings, std::string msg);
Message(std::string funcname, Settings settings, std::string msg, std::string par1);
@ -118,7 +118,7 @@ int main()
// checkvalidate.cpp
err.push_back(Message("unvalidatedInput", Message::all, "Unvalidated input: %1", "varname"));
err.push_back(Message("unvalidatedInput", Message::security, "Unvalidated input"));
// Generate code..
@ -223,10 +223,11 @@ int main()
// Generate documentation..
std::cout << "Generate doc.." << std::endl;
for (unsigned int i = 0; i < 4; ++i)
const unsigned int NUMSUITE = 5;
for (unsigned int i = 0; i < NUMSUITE; ++i)
{
const char *suite[4] = { "error", "all", "style", "all + style" };
const Message::Settings settings[4] = { Message::error, Message::all, Message::style, Message::style_all };
const char *suite[NUMSUITE] = { "error", "all", "style", "all + style", "security" };
const Message::Settings settings[NUMSUITE] = { Message::error, Message::all, Message::style, Message::style_all, Message::security };
std::cout << " =" << suite[i] << "=" << std::endl;
for (std::list<Message>::const_iterator it = err.begin(); it != err.end(); ++it)
it->generateDoc(std::cout, settings[i]);
@ -374,6 +375,8 @@ std::string Message::stringifySettings(bool text) const
return text ? "style" : "s._checkCodingStyle";
case style_all:
return text ? "all style" : "s._checkCodingStyle || s._showAll";
case security:
return text ? "security" : "s._security";
case never:
return text ? "never" : "false";
}