I want to reference a alue in a header file to use in my cpp file. The value name of the value is currentaddress. Here is the code...
HOSTENT *pHostEnt2;
int **ppaddr2;
SOCKADDR_IN sockAddr2;
char* addr2;
pHostEnt2 = gethostbyname(NewLogURL.c_str());
ppaddr2 = (int**)pHostEnt2->h_addr_list;
sockAddr2.sin_addr.s_addr = **ppaddr2;
addr2 = inet_ntoa(sockAddr2.sin_addr);
printf("\n Current Website IP:%s", addr2);
I tried this...
char getcurradd(char addr2)
{
return addr2;
}
But it say that I have the wrong value for the function. Any help is appreciated. Thnak you.
I would call it like this...
char CA = getcurradd(*addr2);
OK this was really simple! I just placed it as a global variable and walla! I can now access it.
Related
FindPattern Function looks like this
DWORD FindPattern(DWORD base ,char *module, char *pattern, char *mask)
{
MODULEINFO mInfo = GetModuleInfo(module);
DWORD size = (DWORD)mInfo.SizeOfImage;
DWORD patternLength = (DWORD)strlen(mask);
for (DWORD i = 0; i < size - patternLength; i++)
{
bool found = true;
for (DWORD j = 0; j < patternLength; j++)
{
found &= mask[j] == '?' || pattern[j] == *(char*)(base + i + j);
}
if (found)
{
return base + i;
}
}
return NULL;
}
and i'm using use the function like this
DWORD aAddy = FindPattern(BaseAddress,(char*)("ros.exe"),
const_cast<LPSTR>("\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\0x88\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xFA\x44\x00\x00\x00\x3F\x00\x00\x00\x00"),
const_cast<LPSTR>("???????????????x??????????????????????????????????????????????????????????????????????xx???x????"));
while debugging i got error on j = 15 and mask[j] = 'x'
the exception thrown show access violation reading location "base"
can someone help me what is wrong with j = 15 or i just wrong passing the parameters?
i cant pass the char* mode just like ("ros.exe") its give me error
cant convert argumen char* to char*.
Gee that code looks familiar :P
You get Access Violation on 'base' because you do not have read permissions on 'BaseAddress' which you pass in as the 'base' argument. We do not know what 'BaseAddress' is because you don't include how you assign the value of that variable in the code you posted. Perhaps it is uninitialized or you need to use VirtualProtect() to get read permissions. I would assume you don't initialize it or are passing in the wrong address.
It reads from 'base' the first time when j=15 because this is the first element of the char array that is not a wildcard, meaning your code doesn't read from 'base + i + j' until a non-wildcard is found that is why it doesn't happen until j=15.
The original source code includes this line to get the base address of the module, but you have modified/removed it.
DWORD base = (DWORD)mInfo.lpBaseOfDll;
Alternatively you can use this to get the base address of the executable
DWORD base = (DWORD)GetModuleHandle(NULL);
Once you properly define base I think your code will work just fine
I am attempting to detect current system language with QLocale:
QLocale::Language sysLangId = QLocale::system().language();
However, it's not working correctly. I'm on Russian Windows 7 with English language pack applied, but language() returns Russian instead of English. Is there any workaround?
When I was working on Localization in Qt, I used
QString locale = QLocale::system().name();
When I tested getting the locale, I found it was dependent on the Format in the Region and Language settings:
Control Panel > Region and Language > Format
Hope that helps.
I've found 2 ways to solve my problem. The Qt way is to use QLocale::system().uiLanguages().
On my system it returns a list with a single item "en-US". The problem with that is I need a language name, like "english", so I'd have to add a map for converting language code to language name. It's no big deal, but I've decided to use WinAPI:
QString sysLangName;
const LANGID langId = GetUserDefaultUILanguage();
WCHAR langName[1000] = {0};
if (GetLocaleInfoW(MAKELCID(langId, SORT_DEFAULT), LOCALE_SENGLANGUAGE, langName, sizeof langName / sizeof langName[0] - 1) != 0)
sysLangName = QString::fromWcharArray(langName);
I had the same problem and I solved with this code.
QString local = QLocale::languageToString(QLocale::system().language());
To get the language name you can simply use QLocale::languageToString(QLocale::system().language()); or maybe QLocale::system().nativeLanguageName(); but the real problem is as you mentioned that the QLocale::system() does not always match the actual system locale on windows. This can be observed if you change the locale during program execution. In this case the QLocale::system() does not get up-to-date and returns the old value. Here is a workaround I used in Qt5:
class WinEventFilter : public QAbstractNativeEventFilter
{
public:
bool nativeEventFilter(const QByteArray &eventType, void *message, long *result)
{
if (((MSG*)message)->message == WM_WININICHANGE )
{
// Workaround - in Qt5 the system locale is not up to date and we have to manually update it.
#ifdef _DEBUG
QLibrary lib("Qt5Cored.dll");
#else
QLibrary lib("Qt5Core.dll");
#endif
void (* func)() = lib.resolve("?updateSystemPrivate#QLocalePrivate##SAXXZ");
if (func)
func();
else
qDebug()<<"! Unable to resolve updateSystemPrivate()";
// Workaround end
qDebug()<<"WM_WININICHANGE"<<QLocale::languageToString(QLocale::system().language());
}
return false;
}
};
and my application class constructor looks like this:
MyApplication::MyApplication( int & argc, char ** argv )
: QApplication(argc, argv)
{
WinEventFilter *pFilter = new WinEventFilter(this);
installNativeEventFilter(m_pEventFilter);
}
Hope this helps.
I've an exe that will need to retrieve version infomation from a specific dll (ex : FileDescription). My codes already called the GetFileVersionInfoSize and GetFileVersionInfo. But I'm not sure how to apply the VerQueryValue, even after going through http://msdn.microsoft.com/en-us/library/ms647464(v=vs.85) and other examples.
Can someone explain/shed some light on how to apply VerQueryValue and its usage? Thanks.
To get the FileDescription via VerQueryValue, just copy and paste the example code from the VerQueryValue documentation, and modify it as appropriate.
The basic idea behind that example code is:
Use the second form (\VarFileInfo\Translation) to get the list of translations.
Then use the third form (\StringFileInfo\lang-codepage\string-name) to get the string(s).
(The first form () is just for the VS_FIXEDFILEINFO, a set of numerical values for parts of the version number, the flags, etc.)
The example code gets the FileDescription for each language. If you know you only have one language (e.g., because you're looking at your own app, and it isn't translated), you can skip the loop and just return the first one. For more general use, you want to pick the best match for the user's language and return that one.
This is a working example, after many try and errors. I'm using Borland C++, so minor details may need to be changed for incompabible environments.
#include <Windows.h>
std::string GetAppVersion()
{
DWORD dwHandle;
TCHAR fileName[MAX_PATH];
GetModuleFileName(NULL, fileName, MAX_PATH);
DWORD dwSize = GetFileVersionInfoSize(fileName, &dwHandle );
TCHAR buffer[dwSize];
VS_FIXEDFILEINFO* pvFileInfo = NULL;
UINT fiLen = 0;
if ((dwSize > 0) && GetFileVersionInfo(fileName, dwHandle, dwSize, &buffer))
{
VerQueryValue(&buffer, L"\\", (LPVOID*)&pvFileInfo, &fiLen);
}
if (fiLen > 0)
{
char buf[25];
int len = sprintf(buf, "%hu.%hu.%hu.%hu",
HIWORD(pvFileInfo->dwFileVersionMS),
LOWORD(pvFileInfo->dwFileVersionMS),
HIWORD(pvFileInfo->dwFileVersionLS),
LOWORD(pvFileInfo->dwFileVersionLS)
);
return std::string(buf, len);
}
else
{
return std::string("(Unknown)");
}
}
I'm trying to convert a char* to a BSTR*, and my char* has special characters in it from being encrypted. I have tried several approaches found on the web, but back in the calling vb code, I always end up with something different. I'm pretty sure this has to do with the special characters, because if I don't have them in, it seems to be ok....
my code is something along these lines...
_export myFunction(BSTR *VBtextin, BSTR *VBpassword, BSTR *VBtextout, FPINT encrypt) {
BSTR password = SysAllocString (*VBpassword);
char* myChar;
myChar = (char*) password //is this ok to cast? it seems to remain the same when i print out.
//then I encrypt the myChar in some function...and want to convert back to BSTR
//i've tried a few ways like below, and some other ways i've seen online...to no avail.
_bstr_t temp(myChar);
SysReAllocString(VBtextout, myChar);
any help would be greatly greatly appreciated!!!
Thanks!!!!
If you're manipulating the buffer, you probably don't want manipulate the char * directly. First make a copy:
_export myFunction(BSTR *VBtextin, BSTR *VBpassword, BSTR *VBtextout, FPINT encrypt) {
UINT length = SysStringLen(*VBpassword) + 1;
char* my_char = new char[length];
HRESULT hr = StringCchCopy(my_char, length, *VBpassword);
If that all succeeds, perform your transformation. Make sure to handle failure as well, as appropriate for you.
if (SUCCEEDED(hr)) {
// Perform transformations...
}
Then make a copy back:
*VBtextout = SysAllocString(my_char);
delete [] my_char;
}
Also, have a read of Eric's Complete Guide to BSTR Semantics.
Why does the following code throw an exception when getting to the second scanf_s after entering an number to put into the struct.
This by no means represents a complete linked list implementation.
Not sure how to get onto the next scanf_s when having entered the value? Any ideas?
EDIT: Updated code with suggested solution, but still get an AccessViolationException after first scanf_s
Code:
struct node
{
char name[20];
int age;
float height;
node *nxt;
};
int FillInLinkedList(node* temp)
{
int result;
temp = new node;
printf("Please enter name of the person");
result = scanf_s("%s", temp->name);
printf("Please enter persons age");
result = scanf_s("%d", &temp->age); // Exception here...
printf("Please enter persons height");
result = scanf_s("%f", &temp->height);
temp->nxt = NULL;
if (result >0)
return 1;
else return 0;
}
// calling code
int main(array<System::String ^> ^args)
{
node temp;
FillInLinkedList(&temp);
...
You are using scanf_s with incorrect parameters. Take a look at the examples in the MSDN documentation for the function. It requires that you pass in the size of the buffer after the buffer for all string or character parameters. So
result = scanf_s("%s", temp->name);
should be:
result = scanf_s("%s", temp->name, 20);
The first call to scanf_s is reading garbage off the stack because it is looking for another parameter and possibly corrupting memory.
There is no compiler error because scanf_s uses a variable argument list - the function doesn't have a fixed number of parameters so the compiler has no idea what scanf_s is expecting.
You need
result = scanf_s("%d", &temp->age);
and
result = scanf_s("%f", &temp->height);
Reason is that sscanf (and friends) requires a pointer to the output variable so it can store the result there.
BTW, you have a similar problem with the parameter temp of your function. Since you're changing the pointer (and not just the contents of what it points to), you need to pass a double pointer so that the changes will be visible outside your function:
int FillInLinkedList(node** temp)
And then of course you'll have to make the necessary changes inside the function.
scanf() stores data into variables, so you need to pass the address of the variable (or its pointer)Example:
char string[10];
int n;
scanf("%s", string); //string actually points to address of
//first element of string array
scanf("%d", &n); // &n is the address of the variable 'n'
%19c should be %s
temp->age should be &temp-age
temp->height should be &temp->height
Your compiler should be warning you
about these errors
I believe you need to pass parameters to scanf() functions by address. i.e. &temp->age
otherwise temp-age will be interpreted as a pointer, which will most likely crash your program.