80 lines
2.3 KiB
C++
80 lines
2.3 KiB
C++
|
/*
|
||
|
|
* 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/
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "checkvalidate.h"
|
||
|
|
#include "errorlogger.h"
|
||
|
|
#include "token.h"
|
||
|
|
#include "tokenize.h"
|
||
|
|
|
||
|
|
|
||
|
|
CheckValidate::CheckValidate(const Tokenizer *tokenizer, ErrorLogger *errorLogger)
|
||
|
|
: _tokenizer(tokenizer), _errorLogger(errorLogger)
|
||
|
|
{
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
CheckValidate::~CheckValidate()
|
||
|
|
{
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Check that there are input validation when reading number from FILE/stream
|
||
|
|
*/
|
||
|
|
void CheckValidate::readnum()
|
||
|
|
{
|
||
|
|
const Token *tok = _tokenizer->tokens();
|
||
|
|
while (tok)
|
||
|
|
{
|
||
|
|
unsigned int varId = 0;
|
||
|
|
|
||
|
|
// Search for a variable declaration
|
||
|
|
while (tok)
|
||
|
|
{
|
||
|
|
if (Token::Match(tok, "int %var% ;"))
|
||
|
|
{
|
||
|
|
varId = tok->next()->varId();
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
tok = tok->next();
|
||
|
|
}
|
||
|
|
|
||
|
|
// 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));
|
||
|
|
if (Token::Match(tok2, "fscanf ( %var% , %str% , %varid%", varId))
|
||
|
|
_errorLogger->unvalidatedInput(_tokenizer, tok2, tok2->strAt(6));
|
||
|
|
if (Token::Match(tok2, "scanf ( %str% , %varid%", varId))
|
||
|
|
_errorLogger->unvalidatedInput(_tokenizer, tok2, tok2->strAt(4));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|