possible bug in ATL (impersonation)

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  - 1
    - Problem with CHttpFile::SendRequest() within CWinApp::InitInstance() with IE7 DLLs I have a DLL that was working fine until I switched to IE7. Debugging through it, the code would hang at a call to CHttpFile::SendRequest() within CWinApp::InitInstance() . Removing the code and putting it in another function outside the initialization sequence solved the issue, but any insight into the problem would be greatly appreciated. thanks, Chuck Tag: Visual C++ General possible bug in ATL (impersonation) Visual C++
  - 2
    - VS: Uninstall express/install pro probs hey, I'm a student, i've been using the express versions of c++ and c# for sometime now, i've just started uni and was happy to find out that i could get the visual studio professional as though msdn academic alliance. However, i can't seem to install it, i think it's because i have the express versions, but when i uninstall them, the pro version still won't install, and the errors it gives aren't very helpful. at the moment, i've got a opengl/c++ project to do, most of the examples and tutorials i'm looking at require the platform sdk and MFC. i'm using vista, so i've got the windows sdk, with the all inportant windows.h, but i believe the MFC is only available for non-express c++, is that right tbh, i would prefer to use directx/c#, but such is life my email is lukey_poos@hotmail.co.uk if anyone can help with the VS thing or the opengl thing too (doing my head in), that would be dandy. Luke Tag: Visual C++ General possible bug in ATL (impersonation) Visual C++
  - 3
    - Any memory leak tool is there to find Unmanaged Heap Memory I have multi-threaded application(it is a service) and it is using two more dlls. There is a memory leak which can be seen in task manager. When I observed in Performance Monitor, only Private Bytes is increasing gradually. With other two performance objects, .Net CLR Memory/# bytes in All heaps and the .Net CLR LocksAndThreads/# of the current logical thread are not getting increased. They are stable. Can anyone refer some good memory leak detection tool to identify unmanged heap memory in this scenario. Tag: Visual C++ General possible bug in ATL (impersonation) Visual C++
  - 4
    - Visual C++ engine is not properly installed Hello Re: Visual C++ engine is not properly installed I am going to mark this thread as answered since you have not followed up with any further information on your problem as requested - I assume you solved the problem yourself or one of the suggestions in this thread helped you solved the problem. If you have a solution you could post it so others can find it. If you do not have a solution then please submit further details and then mark the thread as unanswered. Thanks Damien Tag: Visual C++ General possible bug in ATL (impersonation) Visual C++
  - 5
    - Help on dynamic control and wiring click event for buttons Im not sure why I brought up DOS operating system. I guess I was just mad at windows programming in general. Just ignore that. The On_command() event sounds maybe like what I need to get messages sent to my buttons. Tag: Visual C++ General possible bug in ATL (impersonation) Visual C++
  - 6
    - DLL questions with Visual Studio using C++ There really is a lot of useful information in the documentation; see DLLs and the many sub-topics. Most of what Mike Danes said is in the documentation. One problem with exporting member functions for use by programs that are not written using C++ is " this ". Every instance of a C++ class has a " this " pointer. Non-C++ programs, including C programs, don't know what the this pointer is and they don't know what a this pointer value is. When a C++ member (of a class) function is called, there is always a this pointer as the first parameter. You don't see it; C++ hides that parameter from us, but it is there. Unless the member function is a static member function. So if you were to be able to determine the mangled name, the calling program needs to know the this pointer and there are various peculiarities of C++ classes that other compilers would not know about. I am nearly certain that if a program calls a C++ class member function then the class member function must be static, and you will probably need to have a way for the static member function to find the instance of the class that it belongs to. Therefore there is little practical purpose for exported functions to be used by a non-C++ program compared to exporting a non-C++ member function using extern "C". You can do it and it is more object-oriented to have the exported functions in their corresponding class but just understand that the most significant reason for doing that has very little advantage during execution. Tag: Visual C++ General possible bug in ATL (impersonation) Visual C++
  - 7
    - WinSock2 + SSL That tutorial is actually using openssl for ssl sockets, so basically a third party dll/lib. I would really like to know if I can use SSL without having to use any non-standard dll/libraries in my application. Whats frustrating is that I can't get a definitive yes or no from anywhere Thanks, Jim. Tag: Visual C++ General possible bug in ATL (impersonation) Visual C++
  - 8
    - how to run a function for 60 seconds What you need to use is _kbhit, to detect if a key is pressed and then call cin to get the key. if (_kbhit()) readkey; The doc on this function is at http://msdn2.microsoft.com/en-us/library/58w7c94c(VS.80).aspx I have used in a c program in conjuction with getchar() but have not used in a c++ app with cin and do not know if they can be mixed. If not the alternative is (in C) char mychar; if (_kbhit()) mychar=getch(); else //no key pressed Tag: Visual C++ General possible bug in ATL (impersonation) Visual C++
  - 9
    - File Upload/Download using HTTP Hi All, I want to upload and download file using HTTP. plz help me how to do this one. in my code when i trying to connect with a device in wired network it will work without any problem. at the same time when i try to connect with a device in a wireless network it wont work i dont know whats the problem(with error no 12152). any one plz help me out. 1 more thing, when i upload to a wired device in the http header i saw 1 authentication tag but this tag missed in uploading a file to wireless device. Thanks and Regards -Amjath Tag: Visual C++ General possible bug in ATL (impersonation) Visual C++
  - 10
    - Project with Multiple Targets Hi Sam, Just to make sure I understand. I download a C++ library that comes with 30 programs that demonstrate the library's features. All the programs come in the same directory called "example_programs". The Unix programmer types "make" and he's done. The VS user creates 30 different projects "from existing code", sets any #defines, sets dependencies, etc. The thing is, we're talking about the difference between 2 seconds and 2 hours. Are there add-on tools that automate building a project from a directory full of cpp files Thanks! Pete Tag: Visual C++ General possible bug in ATL (impersonation) Visual C++
  - 11
    - Edit control won't get focus See in your Code you used WS_DISABLED . this means you can't interact with your edit control as it is in disable form Thanx Tag: Visual C++ General possible bug in ATL (impersonation) Visual C++
  - 12
    - Libraries linkage errors make me CRAYZEEE spree wrote: it is already set to multi-threaded mod, and these projects are in the same solution. Is there a way to "hide" the inclusion of <iostream> so only the log project can see it Make sure that only the source files which need the iostream header, includes the iostream header. You should also be very careful letting the .exe project include files from the static library, and under no circumstances should you go the other way (static library including headers from the .exe proj). By multi-threaded I assume you mean that neither of your projects use the "* dll" option for the runtime library Tag: Visual C++ General possible bug in ATL (impersonation) Visual C++
  - 13
    - Bug in VC8 SP1's security cookie system VC8's security cookie system (/GS) is designed to not fail in the event of __security_init_cookie being called. However, there is a 1 in 4294967295 chance that it will fail if called twice on an x86-32 program. This code from gs_support.c tries to prevent a second __security_init_cookie call from changing the cookie. On x86-32, it needs to remake the cookie if the module loader in XP put zero in the high word, so that the cookie is more secure. if (__security_cookie != DEFAULT_SECURITY_COOKIE #if defined (_X86_) && (__security_cookie & 0xFFFF0000) != 0 #endif /* defined (_X86_) */ ) { __security_cookie_complement = ~__security_cookie; return ; } If that high word is zero, it will reinitialize the cookie on its own. Later in the code, it tries to prevent a randomly-generated cookie from being DEFAULT_SECURITY_COOKIE or having a high word of zero, because if __security_init_cookie were called again, the above code would cause the cookie to be reinitialized. The code looks like this: if (cookie == DEFAULT_SECURITY_COOKIE) { cookie = DEFAULT_SECURITY_COOKIE + 1; } #if defined (_X86_) else if ((cookie & 0xFFFF0000) == 0) { cookie |= cookie << 16; } #endif /* defined (_X86_) */ There is a flaw in the x86-32 logic here. It tries to prevent the cookie having a high word of zero by ORing the high word with the low word. However, if the generated cookie is entirely zero, the cookie will remain zero, and a subsequent call to __security_init_cookie will set it to something else. In a program that calls __security_init_cookie twice, which would occur in a program that needs to override the entry point, /GS will falsely detect a buffer overflow under certain conditions. Tag: Visual C++ General possible bug in ATL (impersonation) Visual C++
  - 14
    - hangman project "Or, if you wanted to impress your teacher, and you know about loops, you could implement your own strlen() type function." It may impress the teacher, but it won't impress the boss. Use strlen(). Tag: Visual C++ General possible bug in ATL (impersonation) Visual C++
  - 15
    - Info about Releasing COM1,2,3,4 ports explicitely using Windows API or C++ code. [HOW TO]? Hey, As much info i know, i have given out. The WIN API has been made to get the COM port access. Once i get a change to aquire it through our project and in the second time, i cant. This happens randomly. But at only one time i can get an access to COM port. Yes as soon as my job is over with COM access, i am releasing it. And no, my project just tries to acquire COM port for 3 times, if WIN doesnt release it, then my project just drops out of loop. So hence i need the COM port to be manually handled by my code. And no exceptions i am getting. The project is using Standard WIN API umm... like User32.dll and Kernel32.dll and many more. So i exactly dont know, why COM port is not made free by WIN. So hence, i want to manage it manually. Thanks. Tag: Visual C++ General possible bug in ATL (impersonation) Visual C++
  - 16
    - Problem running temporary macro. Is this something that has worked for you previously but not now or is this something you have never done before and is not working as you expect it to I have used temporary macros but not the way you are. Tag: Visual C++ General possible bug in ATL (impersonation) Visual C++
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  - 1
    - Can't download Platform SDK Everytime i wanna download the platform SDK for Windows XP it doesnt work I've tried to dowload the ISO download, the full download and the web install, but none of them seems to work I use Firefox, but i also tried it with IE, which doesn't work either This is what happens: When i click download, it doesn't start downloading, so i click the link, then i get the message: In IE: "The page can not be loaded", And in Firefox: "The server is taking too long too respond" I've tried to download this thing for 3 days now I hope any of you can help me, because this annoys me! Greets, PS: I dont know if this is the best forum to put this, but i dont know where to put it else Tag: Visual C++ General possible bug in ATL (impersonation) Visual C++
  - 2
    - atlhost.h and NO_STRICT gives C2440 Why do you say there is a bug What is the compiler doing that it should not do or what is it not doing that it should do With NO_STRICT defined, it complains that: INT_PTR (__stdcall *)(HWND,UINT,WPARAM,LPARAM) cannot be converted to: DLGPROC Right How is DLGPROC defined The compiler is helping you to look at the relevant code, so it is easier for you to look at it than for I to look at it. Is it a valid for the compiler to complain Tag: Visual C++ General possible bug in ATL (impersonation) Visual C++
  - 3
    - Question about programming in C for windows... There is a C#, a C++, a visual basic...ugh. Ok. So...those of you familiar with C, what's wrong with this: LPCTSTR CurDir = "C:\Documents and Settings\test folder\*" ; The * is there because I want the function FindFirstFile to find the first file in that folder. Futhermore, is it possible for me to use the * to find any first file if...say...I was passed "C:\Docum..." from a funciton such that CurDir = "C:\Documents and Settings\test folder" (assuming the user input that path). Tag: Visual C++ General possible bug in ATL (impersonation) Visual C++
  - 4
    - Circle reference issue 1) Don't forward declare System::Windows::Forms::Form - there is no need as the class is fully defined. 2) Have your added a reference to <System.Windows.Forms.dll> Tag: Visual C++ General possible bug in ATL (impersonation) Visual C++
  - 5
    - creating C files moreover how do i debug and run the program Tag: Visual C++ General possible bug in ATL (impersonation) Visual C++
  - 6
    - WMI Win32_ModuleLoadTrace In Win32_ModuleLoadTrace FileName has full path If no how can I find it. What is better use PSAPI or WMI Tag: Visual C++ General possible bug in ATL (impersonation) Visual C++
  - 7
    - Setting up the debugger? Do you have a project (I hope many) that you have generated that you know works for both release and debug builds You can compare the properties for that project or those projects to get most or all of the differences. I list the differences that I see; all these are in the project properties page. In the C/C++ node, select Optimization. At the top of the other pane is Optimization; disable it. The other stuff there should also be set to "No" or whatever. Then select Code Generation. For Runtime Libray use the debug version of the libraries. That is an important change but the only one I see there. Then select Preprocessor and at the top change "NDEBUG" to "_DEBUG". In the Linker node select Debugging. There is one option that needs to be changed but I don't understand it. I hope you can find it. I probably missed some of the options but I hope I have caught the important ones. Tag: Visual C++ General possible bug in ATL (impersonation) Visual C++
  - 8
    - Every time while relocate : Add Files to Project Hi, In our project there are many files I have to add from different directories. And that is working fine. But if I relocate that project folder then path of all the added files is changed. And I have to delete those files and add the same files again every time. Is there any way to give relative path to this files so if I change the location then I need not add all the files again. Thanks Tag: Visual C++ General possible bug in ATL (impersonation) Visual C++
  - 9
    - CDialog What you are doing is not correct. Normally DoModal() function will return only after the Dialog exits and the return value of the DoModal function will be the value passing to the EndDialog function. The basic implementation of CDialog return IDOK, IDCANCEL, -1 (error creating dialog) or IDABORT You can override IDOK, IDCANCEL functions in you dialog class and you can have your own implementation or Exiting procedures in that. One more thing you need to do is that add a message handler on clicking IDCANCEL2 function. Inside that handler call you required exit function (probably OnCancel) function. e.g CMyDialog::OnOK() { // ... custom code for IDOK } CMyDialog::OnCancel() { // ... custom code for IDCANCEL } CMyDialog::OnCancel2 { // Add button message handler inside the message map // ... Write your own implementation or call the other functions for exiting. } Check MSDN and learn through samples Tag: Visual C++ General possible bug in ATL (impersonation) Visual C++
  - 10
    - How to create form with 2 textboxes in c++ win32 application When you have everything with you .like a form application then wat's the problem. Simply use CEdit class and call it's Create Method .Nothing else you have to do. See if you want to Create a Pure Win32 Application so will suggest you first just use some good books like charles petzold etc and read the books then gave a try by yourself. Thanx Tag: Visual C++ General possible bug in ATL (impersonation) Visual C++
  - 11
    - CString You can read the entire file with one read function call; see my Edit Control Read . If you must have a single space between each record then you will need to convert the two end of line characters ("\r\n") into one space. You cannot however do this using the CArchive file. There is a way to do something similar using the CArchive file but I forget the details except that the MFC source code for CEditView has an OnOpenFile override. Tag: Visual C++ General possible bug in ATL (impersonation) Visual C++
  - 12
    - cannot find WM_INITDIALOG (OnInitDialog) property in Dilaog Class Hi, I hope someone can help. I'm using Visual Studio 2005, and I want to add OnInitDialog function on my Dialog Class but I cannot find it in the Property window. I can only see WM_INITMENU and others but not WM_INITDIALOG How can OnInitDialog can be added on the Dialog class Thanks, Mhelinx Tag: Visual C++ General possible bug in ATL (impersonation) Visual C++
  - 13
    - The warning of the type casting from "HANDLE" to "long" I have the following for something similalr. There is likely a better way and I would pefer the better way but this is what I do now. Code Snippet #pragma warning(push) #pragma warning(disable:4311) DWORD HTASKtoDWORD(HTASK ht) {return reinterpret_cast<DWORD>(ht);} #pragma warning(pop) Tag: Visual C++ General possible bug in ATL (impersonation) Visual C++
  - 14
    - Memory allocation problem Thanks, that fixed my problem Dave Tag: Visual C++ General possible bug in ATL (impersonation) Visual C++
  - 15
    - Native C++ Graphical User Interface Layout Just because it is proper or not doesn't mean you should not use them. Dialog based applications have been around as long as I can remember in windows, they had their uses right from the start. Another area where dialogs were always useful are property pages and help about windows. Dialogs are not dependent on the MFC at all, using them is easy too, so why should you bother about proper. The dialog shouldn't have any problems initialising when you create it using the dialog editor. What controls does it fail on and what does the GetLastError message return after the CreateDialog call. Tag: Visual C++ General possible bug in ATL (impersonation) Visual C++
  - 16
    - C++ Exception Handling There are many opinions about C++ exception handling - what you should do with it and what not. Personally, I think C++ exceptions are not a good way to magically recover from programming errors - such as an unexpected access violation. There are quite a few libraries and frameworks which simply trap such errors effectively hiding programming errors and leaving the program in an unknown state. Hence, translating async exceptions to C++ exceptions is poor design, as is the standardization of std::logic_error. Generally speaking, you should use C++ exception handling to centralize recovery from unusual conditions. That requires programming discipline in that you need to make sure the class invariants hold in case of an exception - at least to guarantee cleanup. While catch-all handlers (note that VC8 /EHs no longer catch OS exceptions with ...) provide no directly accessible context information the exception is still live in the scope of the handler and can be examined by rethrowing it. In fact, that is something that I took advantage of in a generic exception handling framework I designed for my last client. Since exception cannot travel across certain barriers that typically exists at boundaries between your C++ code and other code (Window Procedures, COM entry points, C interfaces etc.) it is often required that you translate C++ exception to some other form (Thread error code, COM HResult/IErrorInfo, etc.). This type of handling is required at every barrier and it is therefore desirable to centralize handling into a common function. That is easily possible if you simply define your call contract to require a live C++ exception (regardless of its dynamic type). This technique is convenient if you have several C++ exception hierarchies (e.g. MFC, ATL, Compiler COM Support, Standard C++ library). As far as dump generation is of a concern you can rely on C++ exceptions being builtin on top of SEH in VC. Since this kind of thing is inherently OS and compiler specific there is nothing you lose in terms of portability. You can use __try/__except to implement a filter which generates a dump.Eg.: Code Snippet void throw_xcpt() { throw my_exception(); } void throw_with_dump() { __try { throw_xcpt(); } __except ( gen_dump( exception_info() ), EXCEPTION_CONTINUE_SEARCH ) {} } -hg Tag: Visual C++ General possible bug in ATL (impersonation) Visual C++

CarlosPizano

I got tired of trying to find a way to post a bug to the VC team. I saw before you could submit a bug but I cannot find it now. So here it is what I think is a bug:

I have a program that I am making using VC 2005 and ATL. The process starts out impersonating on the main thread. When I run the program in release all is good, but in debug mode it behaves weirdly. I have traced the issue to a call that happens only with the debug version of ATL.

The code is in:

\Microsoft Visual Studio 8\VC\atlmfc\src\atl\atls\Allocate.cpp

BOOL bOpen = OpenThreadToken(GetCurrentThread(), TOKEN_IMPERSONATE|TOKEN_DUPLICATE, TRUE, &hThreadToken);
if( !bOpen || hThreadToken != NULL )
{
if( !RevertToSelf() )
{
CloseHandle(hThreadToken);
hThreadToken = NULL;
__leave;
}
}

Note that the if (!bOpen..) block executes in all cases because OpenThreadToken sets the last parameter (hThreadToken) to NULL when it fails. At this point it all goes bad since the if block assumes that it has a non-NULL hThreadToken.

Basicall ATL calling ReverToSelf even when the OpenThreadToken failed is a bug. I assume the developer meant:

if ( bOpen && (NULL != hThreadToken))

Regards

Carlos

Re: Visual C++ General possible bug in ATL (impersonation)

Bruno van Dooren

Hi,

You can post bugs to connect.microsoft.com.

If you post the link here we can rate it and vote on it.

Re: Visual C++ General possible bug in ATL (impersonation)

CarlosPizano

Thanks. I already did that. Here is the link:

https://connect.microsoft.com/VisualStudio/feedback/ViewFeedback.aspx FeedbackID=283324