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- added some basic protection against memory hacking tools

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This commit is contained in:
Mark Vejvoda
2011-01-14 23:51:15 +00:00
parent ccaaf5ab35
commit 2ab82c9271
8 changed files with 212 additions and 91 deletions
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18
source/shared_lib/include/platform/common/platform_common.h
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@@ -26,6 +26,7 @@
#include "checksum.h"
#include <utility>
#include <SDL.h>
#include <map>
#include "leak_dumper.h"
using std::string;
@@ -164,6 +165,23 @@ inline string trim (const string & s, const string & t = SPACES) {
return trim_left (trim_right (d, t), t) ;
} // end of trim
class ValueCheckerVault {
protected:
std::map<const void *,string> vaultList;
void addItemToVault(const void *ptr,int value);
void checkItemInVault(const void *ptr,int value) const;
public:
ValueCheckerVault() {
vaultList.clear();
}
};
}}//end namespace
#endif

35
source/shared_lib/sources/platform/common/platform_common.cpp
View File

@@ -990,4 +990,39 @@ string ModeInfo::getString() const{
return intToStr(width)+"x"+intToStr(height)+"-"+intToStr(depth);
}
void ValueCheckerVault::addItemToVault(const void *ptr,int value) {
Checksum checksum;
checksum.addString(intToStr(value));
vaultList[ptr] = intToStr(checksum.getSum());
// if(SystemFlags::VERBOSE_MODE_ENABLED) printf("In [%s::%s Line: %d] add vault key [%p] value [%s] [%d]\n",__FILE__,__FUNCTION__,__LINE__,ptr,intToStr(checksum.getSum()).c_str(),value);
}
void ValueCheckerVault::checkItemInVault(const void *ptr,int value) const {
map<const void *,string>::const_iterator iterFind = vaultList.find(ptr);
if(iterFind == vaultList.end()) {
if(SystemFlags::VERBOSE_MODE_ENABLED) {
// printf("In [%s::%s Line: %d] check vault key [%p] value [%d]\n",__FILE__,__FUNCTION__,__LINE__,ptr,value);
// for(map<const void *,string>::const_iterator iterFind = vaultList.begin();
// iterFind != vaultList.end(); iterFind++) {
// printf("In [%s::%s Line: %d] LIST-- check vault key [%p] value [%s]\n",__FILE__,__FUNCTION__,__LINE__,iterFind->first,iterFind->second.c_str());
// }
}
throw std::runtime_error("memory value has been unexpectedly modified (not found)!");
}
Checksum checksum;
checksum.addString(intToStr(value));
if(iterFind->second != intToStr(checksum.getSum())) {
// if(SystemFlags::VERBOSE_MODE_ENABLED) {
// printf("In [%s::%s Line: %d] check vault key [%p] value [%s] [%d]\n",__FILE__,__FUNCTION__,__LINE__,ptr,intToStr(checksum.getSum()).c_str(),value);
// for(map<const void *,string>::const_iterator iterFind = vaultList.begin();
// iterFind != vaultList.end(); iterFind++) {
// printf("In [%s::%s Line: %d] LIST-- check vault key [%p] value [%s]\n",__FILE__,__FUNCTION__,__LINE__,iterFind->first,iterFind->second.c_str());
// }
// }
throw std::runtime_error("memory value has been unexpectedly modified (changed)!");
}
}
}}//end namespace