Changed the COM signatures....using ildasm.....

Changed the COM signatures....using ildasm.....

• autodoc

  for each(char s in Password)

  {

  inparr[index++] = (unsigned char)s;

  }

  inparr[index] = 0;

  
  
  

• Sourabh

  I'm at a loss. Isn't this your COM code

  Either way, I don't see any code to put a null at the end of the char array. You should also use the memory window in debug mode to make sure your password is being passed into the array OK.

  
  
  

• Anonymous_2075

  No, the function does work but that function is suppose to return S_OK....

  I'm checking the password in that function.....until I return S_OK or return true; I dont know it thinks the password is wrong.....I have no clue why thats happening....

  I'm 100% i'm wrong somewhere.....but cant figure out where......

  
  

• sdfsedfdsfsdf

  Where is inparr defined Perhaps it's not long enough.

  
  
  

• BaruchAshkenazi

  Hello Christian,

  Sorry for my annoying questions...This thing just bugged me too much...

  Can you please tell me, how to put null at the end of the char array....

  Thanks,

  Harsimrat

  
  

• XDJ

  A long is 32 bit. A byte and unsigned char are both 8 bit, and I thought byte was unsigned. I see no reason why this would not work.

  
  
  

• Moojjoo

  First of all, don't change the signatures unless you also change the code. You need to recompile your com object to support the return types you're hoping to get out of it.

  
  
  

• Turkalp Kucur

  Hello Christian,

  I was wondering if you can provide a solution or someone could...I have no idea what is going now.....

  Thanks,

  Harsimrat

  
  

• Melvin S. Bernstein

  I just have the .exe COM from a 3rd Party and no control over the source code of that .exe.....

  The original signature was

  HRESULT challenge ( long attemepts, unsigned char password[20]);

  // Raw methods

  virtual HRESULT __stdcall challenge( long attempts, unsigned char password[20]) = 0;

  But .NET changed them to

  System.Void Challenge(System.Int32 attemptsRemaining, System.Byte[] password)

  Now Unfortunately I cannot return anything from this function.......What is the best solution......

  
  

• viobass

  Hi,

  If I do inparr[index] = 0;

  It gets COM Error saying....

  {"Linked object's source class has changed (Exception from HRESULT: 0x80040008 (OLE_E_CLASSDIFF))"} System.Exception {System.Runtime.InteropServices.COMException}

  I dont see any reason why this is throwing this error....

  
  

  
  

• MartinOosthuizen

  The string you were passing in was a char *. A char * is an ASCII encoded string. It uses one byte per character. .NET uses UNICODE by default, which is two bytes per character. So, before you pass the string in to you dll, you probably want to use a method from that URL I gave you to convert the string to an ASCII string, because otherwise, you won't be passing in the string you think you are.

  
  
  

• Inna Tzipris

  I dont know if I m following you.....

  This is what I'm doing, when I call my dll.....this function gets called which .NET changed the signatures...to void

  virtual void OnChallenge( int attemptsRemaining, cli::array<unsigned char> ^passwordHash)

  {

  String ^pAttempts = String::Empty;

  // Get DevicePin

  String ^BBPIN = String::Empty;

  BBPIN = RIM_USBClient::USBClient::GetDevicePin();

  // Figure out how many attemps are remaining

  if (attemptsRemaining.ToString() == "10")

  {

  pAttempts = "(" + "1" + "/" + "10" + ")" + ".";

  }

  else

  {

  int attempts = 10 - attemptsRemaining;

  // Add 1

  attempts = attempts + 1;

  // Put final number in a string

  pAttempts = "(" + attempts.ToString() + "/" + "10" + ")" + ".";

  }

  // Message to the User in case user doesn't enter correct 8 times

  if (attemptsRemaining.ToString() == "2")

  {

  }

  // Get the Form Instance

  RIM_USBClient::UserPassvalidation uValid;

  // Update some form stuff

  uValid.label4->Text = BBPIN->ToString();

  uValid.label5->Text = pAttempts->ToString();

  // Show Dialog

  uValid.ShowDialog();

  // Get the Password from label6

  String ^Password = String::Empty;

  Password = uValid.label6->Text;

  /*

  pin_ptr<unsigned char> pass = &passwordHash[20];

  pin_ptr<const wchar_t> pstr = PtrToStringChars(Password);

  sha_hash(pstr, Password->Length, pass);

  */

  array<unsigned char>^ inparr = gcnew array<unsigned char>(Password->Length);

  int index = 0;

  for each(char s in Password)

  {

  inparr[index++] = (unsigned char)s;

  }

  SHA1^ sha = gcnew SHA1CryptoServiceProvider();

  //array<unsigned char>^ outarr = sha->ComputeHash(inparr);

  passwordHash = sha->ComputeHash(inparr);

  }

  This function is supposed to (return S_OK) when the password is correct to get out of this function...How should I do it....

  
  

• jretelny

  Sorry can you please explain me, I dont understand where.....
  

• csdcomp

  Perhaps the issue is that you are passing a unicode string in, and it wants an ASCII string

  http://msdn.microsoft.com/library/default.asp url=/library/en-us/cpref/html/frlrfsystemtextencodingclasstopic.asp

  That's a link to an MSDN page that talks about how to convert text between encodings.

  
  
  
• Changed the COM signatures....using ildasm.....