security project password cracker - C / C++ / MFC Discussion Boards

Nicholas Cardi31-Aug-04 7:22

31-Aug-04 7:22

Can someone please tell me why the following code is causing an access violation. I am using WTL 7.1

int DrawImage()
{

using namespace Gdiplus;

GdiplusStartupInput gdiplusStartupInput;
ULONG_PTR gdiplusToken;

WCHAR ImgFile[] = L"C:\\test\\test.bmp";

GdiplusStartup(&gdiplusToken, &gdiplusStartupInput, NULL);
Image* img = new Image(ImgFile, 0);

Font myFont(L"Arial", 16);
PointF origin(0.0f, 0.0f);
SolidBrush blackBrush(Color(255, 0, 0, 0));

WCHAR string[] = L"This is a test";

Graphics g(img);
g.DrawString(string, -1 , &myFont, origin, &blackBrush);

// Get the class identifier for the BMP encoder.
CLSID bmpClsid;

ZeroMemory(&bmpClsid, sizeof(bmpClsid));

GetEncoderClsid(L"image/bmp", &bmpClsid);

img->Save(L"C:\\test\\test1.bmp", &bmpClsid);
GdiplusShutdown(gdiplusToken);
return 0;
}

int CWTLTestView::GetEncoderClsid(const WCHAR* format, CLSID* pClsid)
{
unsigned int num = 0; // number of image encoders
unsigned int size = 0; // size of the image encoder array in bytes

Gdiplus::GetImageEncodersSize(&num, &size);
if(size == 0)return -1;

Gdiplus::ImageCodecInfo* imageCodecInfo = new Gdiplus::ImageCodecInfo[size];
Gdiplus::GetImageEncoders(num, size, imageCodecInfo);

for(unsigned int i = 0; i < num; ++i)
{
if( wcscmp(imageCodecInfo[i].MimeType, format) == 0 )
{
*pClsid = imageCodecInfo[i].Clsid;
delete [] imageCodecInfo ;
return i;
}
}

delete [] imageCodecInfo;
return -1;
}

Forever Developing

Re: GDI+ VC++ Access Violation

Anonymous31-Aug-04 7:29

Anonymous

31-Aug-04 7:29

What line is causing the AV?

Re: GDI+ VC++ Access Violation

Nicholas Cardi31-Aug-04 7:33

Nicholas Cardi

31-Aug-04 7:33

After it leaves the the function. It happens after the function exits. The debugger breaks in

gdiplusgraphics.h

~Graphics()
{
DllExports::GdipDeleteGraphics(nativeGraphics);
}

Thanks Nick

Forever Developing

Re: GDI+ VC++ Access Violation

Nicholas Cardi31-Aug-04 11:02

Nicholas Cardi

31-Aug-04 11:02

Fixed my own problem need to free the Graphics, Font, Brush object before calling shutdown.

Forever Developing

Folder path for any Win OS?

nigma_x31-Aug-04 7:01

nigma_x

31-Aug-04 7:01

I'm using Visual C++.net 2002. How do I setup up the file path so that the program knows to go to the system32 folder for any Windows OS. Right now I'm tell it where to look for my OS "Win 2000 pro". But if I install it on another machine with XP. Folder paths are different. Thanks for any help.
("C:\\WINNT\\system32\\ARMSettings.ini");

Re: Folder path for any Win OS?

Nicholas Cardi31-Aug-04 7:30

Nicholas Cardi

31-Aug-04 7:30

Try
System.Environment.GetFolderPath(SpecialFolder.System)

Forever Developing

Re: Folder path for any Win OS?

Ravi Bhavnani31-Aug-04 7:31

Ravi Bhavnani

31-Aug-04 7:31

SHGetSpecialFolderPath()

/ravi

My new year's resolution: 2048 x 1536
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security project password cracker

gtre691431-Aug-04 6:53

gtre6914

31-Aug-04 6:53

Hello guys/girls

I have one project that will appritiate coments and tips from you how to make it.This project is for gaining extra points for my Security course.
The project is made of 2 parts.
First part to make a script in perl (cgi) and upload to the website ,where the scripts only has one field asking for password (only 3 digits), if the correct password is entered then it gives you success and failed if you don't enter the correct password.

I have made that script and uploaded but the hardest part is comming ...

The second part of the project is to make a VC++ application that will connect to that site and will run all 1000 combination (000-999) and gives me back the correct password(where the site will return success).I know that this is not so hard to do it but i am newbie in windows programming.
I have been studing only C++ (not VC++) and i will appritiate some guideness and tips/tutorials to get the extra points on my course !

Thanks in advance

Two beer or not two beer

Re: security project password cracker

Ravi Bhavnani31-Aug-04 7:29

Ravi Bhavnani

31-Aug-04 7:29

You can use this[^] article to create a little C++ class that will connect to the site and try to login with a user-specified password. It's a simple matter of exercising the object in a loop to cover all 1000 combinations.

/ravi

My new year's resolution: 2048 x 1536
Home | Articles | Freeware | Music
ravib@ravib.com

Disabling Keyboard in Win2000 / XP

Ivan Cachicatari31-Aug-04 6:16

Ivan Cachicatari

31-Aug-04 6:16

Hi everyone,

Howto disble Ctrl+Alt+Supr in Win2000 / XP? or block the desktop window and Start Button... Confused | :confused:

Thanks in advance.

Ivan Cachicatari
www.latindevelopers.com

Re: Disabling Keyboard in Win2000 / XP

Nicholas Cardi31-Aug-04 7:47

Nicholas Cardi

31-Aug-04 7:47

You can install a system wide keyboard hook?

Forever Developing

Re: Disabling Keyboard in Win2000 / XP

Ivan Cachicatari31-Aug-04 11:45

Ivan Cachicatari

31-Aug-04 11:45

Hi,

Any example will be well received!

Ivan Cachicatari
www.latindevelopers.com

Re: Disabling Keyboard in Win2000 / XP

ThatsAlok31-Aug-04 22:28

ThatsAlok

31-Aug-04 22:28

#1YOu can go for MSGina replacement

serach for Xgina on Codeproject

#2for keyboard hooks
search for the hooks on codeprojects

you can find tons on information on this

-----------------------------
"I Think It will Work"
Formerly Known As "Alok The Programmer" at CP
-----------------------------
Alok Gupta
visit me at http://www.thisisalok.tk

Re: Disabling Keyboard in Win2000 / XP

Ivan Cachicatari1-Sep-04 5:28

Ivan Cachicatari

1-Sep-04 5:28

Thanks very much!

Ivan Cachicatari
www.latindevelopers.com

Unicode characters on Win9x

Jim Crafton31-Aug-04 5:26

Jim Crafton

31-Aug-04 5:26

A question came up on the VCF forums that I am at a loss to answer. Someone wants to display greek letters, specifically unicode char \x03b5. On at least a number of NT (win2k and winxp) systems this displays OK. We store the data as UTF16 data on both Win9x and NT. On Win9x systems we convert down to ascii. Is there a correct way to do this to get it to display correctly on Win9x? Or is it just not possible?

Should anyone care the full forum posting is here[^] if you want to get a better context of the question.

¡El diablo está en mis pantalones! ¡Mire, mire!

Real Mentats use only 100% pure, unfooled around with Sapho Juice(tm)!

SELECT * FROM User WHERE Clue > 0
0 rows returned

Re: Unicode characters on Win9x

Navin31-Aug-04 7:27

Navin

31-Aug-04 7:27

Not sure if this helps. But in Win9X, there are two issues - you have to convert it down to ASCII (using WideToMultiByte or whatever the function is), *and* make sure you are displaying it in a font that supports that character. So you'll have to scour the fonts for one that supports the Greek charset and go from there.

This I know will work if you are running on a Greek system. If you are running on an English system and want to display Greek characters, I'm not sure this works (althoguh I think it will.)

An expert is somebody who learns more and more about less and less, until he knows absolutely everything about nothing.

Re: Unicode characters on Win9x

Jim Crafton31-Aug-04 10:42

Jim Crafton

31-Aug-04 10:42

OK well I am definitely doing both of your suggestions. The question is whether I am doing the *right* thing.
For WideToMultiByte I am using the CP_ACP code page. For the font char set I base that on the current thread locale. So if that's english then I use the default char set. If it's a greek locale then I use the GREEK_CHARSET for the font.

Maybe I need to have the guy try on both english and Greek locales and see what happens.

¡El diablo está en mis pantalones! ¡Mire, mire!

Real Mentats use only 100% pure, unfooled around with Sapho Juice(tm)!

SELECT * FROM User WHERE Clue > 0
0 rows returned

Re: Unicode characters on Win9x

Tim Smith31-Aug-04 19:21

Tim Smith

31-Aug-04 19:21

Jim,

Check out the documentation for MSLU (It is a library and DLL to add Unicode support to 9x). I don't remember the specifics, but I think that even with MSLU you can not display a mixture of code pages. Thus if they don't have the Greek code page loaded, they are SOL.

http://seba.studentenweb.org/thesis/papers/mslu.pdf

Tim Smith

I'm going to patent thought. I have yet to see any prior art.

How to create programmatically SQL server database ?

vgrigor131-Aug-04 5:10

vgrigor1

31-Aug-04 5:10

Please show code.

Especially interesting:
is it possible to do it by ADOX?

I tried but did not found how...

Thanks.

Re: How to create programmatically SQL server database ?

Jeff Bogan31-Aug-04 8:10

Jeff Bogan

31-Aug-04 8:10

You link your db, install it in odbc and then use a SQL command called through a string

Tree Control

ivax31-Aug-04 5:05

ivax

31-Aug-04 5:05

I need a tree control that let me identify a node by index. This index must bea CString Type and not visible.

CTreeCtrl let me identify with a Int Type

Any suggestion?

Thanks in advance

Re: Tree Control

valikac31-Aug-04 5:54

valikac

31-Aug-04 5:54

One solution is a map.

Kuphryn

Re: Tree Control

ivax31-Aug-04 5:57

ivax

31-Aug-04 5:57

Can you expain me more please?

Thanks

Re: Tree Control

Maximilien31-Aug-04 6:55

Maximilien

31-Aug-04 6:55

(assume your talking about an MFC tree )

when you insert a new node in the tree, you will have an HTREEITEM, and with it, the CString that is the key.

( not tested )
so you use a map like this std::map < CString, HTREEITEM > and insert the info in the map.

and lookup the map with the CString key to find the associated HTREEITEM.

Maximilien Lincourt
Your Head A Splode - Strong Bad

Struct question

Tom Wright31-Aug-04 4:57

Tom Wright

31-Aug-04 4:57

Is is possible to have a variable length char in the sturcture based on the value of another struct object.
For instance here is my struct:

struct myMsg{<br />
    BYTE msgNulls[53];<br />
    BYTE STAP[4];<br />
    BYTE BlockLen[4];<br />
    BYTE HDRLen[2];<br />
    BYTE FunctionCode[2];<br />
    BYTE ValField[4];<br />
    BYTE DataLen[4];<br />
    BYTE StatusCode[2];<br />
    BYTE Dest[2];<br />
    char DataField[DataLen];<br />
    BYTE STOP[4];<br />
};<br />

I wnat Datafield to be the length of whatever datalen is. I know that I cannot do it like as shown but is there a way to do it?

Thanks

Tom Wright
tawright915@yahoo.com

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