Comments by Tomazas77 (Top 36 by date)

Thanks, uncommenting =0 part solved the issue!
Great

just declaration virtual in class.

yes, still have linker problem

I've just added this file so is not linked anywhere yet, but insede file is linked in cString cPlainKey::ToString(bool hide)
I can copy rest of code ("type,IdSize(),id,&PrintKeyNr()") but this should not be a problems as all of them return int.

just added to question

I used #defined cString because this code copy and paste. More simple to define than to do replacement.

Setting warning to level 4 does not add more errors, just one.

Any tries to compile project with initialisation of structure fails over with error:
"Could not load type 'WindowsApplication1.NewCamD.DES_ks' from assembly 'NewCamDLibrary_test.NET, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' because it contains an object field at offset 0 that is incorrectly aligned or overlapped by a non-object field."

Your structure missing another array of 16 values. Structure should be something like
<structlayout(layoutkind.explicit)> _
Structure DES_key_schedule
<fieldoffset(0),MarshalAs(UnmanagedType.ByValArray, SizeConst:=16)> Dim ks() As DES_ks
Sub New(ByVal val As Boolean)
ReDim ks(16)
For j As Integer = 0 To 15
ks(j) = New DES_ks(True)
Next
End Sub
End Structure

<structlayout(layoutkind.explicit)> _
Structure DES_ks
<fieldoffset(0),MarshalAs(UnmanagedType.ByValArray, SizeConst:=8)> Dim cblock() As Byte
<fieldoffset(0)> Dim dlong As UInt32
Sub New(ByVal val As Boolean)
ReDim cblock(8)
End Sub
End Structure

I've tried to replicate the structure but I couldn't. It's just too complex and event quit good explanation link did not helped me. All structures was in C++ with invalid pointers.

Then I've tried just to copy all structure to binary array (the size I know - its 128) and this did not returned errors. That just worked! Its just bytes.
I may think that your proposed structure may work. I'll try this out later.

Thanks

I found some article regarding the struct union in C++ where it says that struct with unions can be only pointers. Now I've tried to pass just this structure to C++ and I can see invalid pointers in this structure, so I guess that my structure is not right for vb.net.

Stefan, could you check if I transfered C++ structure corectly to .NET (see edited question)? Or this relates to KB327106?

Looks like it copies the data but this returns an error in .NET interface:
"An unhandled exception of type 'System.ExecutionEngineException' occurred in Application1.exe"

Yes (static=Shared), you can write in C# I will translate it to VB.NET. I declared in my VB as: internal class win32API { public const Path = "..\\"; [DllImport(Path + "NewCamdLibrary.dll", EntryPoint = "TestBytes", SetLastError = true, CharSet = CharSet.Auto, ExactSpelling = false, CallingConvention = CallingConvention.StdCall)] public static extern int TestBytes( [MarshalAs(UnmanagedType.AsAny)] ref char[] a, short index, [MarshalAs(UnmanagedType.AsAny)] ref char @out); }

Any attempts to change code makes no difference. I am still getting same error:
"Attempting managed execution inside OS Loader lock. Do not attempt to run managed code inside a DllMain or image initialization function since doing so can cause the application to hang."

I've moved code to Class and tried to use shared. No luck.

Found working C++ to VB6 example ant that works except my line with bytes (crashes all VB6). Migrated code to VB.NET does not work at all (same error, moved to class).

Not sure what do you mean with this, but I don't use CLR in C++ code and this is not for Win CE.

I've modified then CNewCamdLib::QueryInterface code and I may thing there is an error in there, but I am not familiar with COM objects especially in C++.

As I said, it compiles then code, but using COM interface class is not returned.
VB6 for example return error:
Run-time error 424: Object required on line
Set obj = CreateObject("TomSoft.NewCamDLibrary")

VB.NET return on same line:
Cannot create ActiveX component.

Thanks for advice, I've been searching on web for a function to convert string hex values separated by space to unsigned chars. I came across only with this solution.

And, I've solved the issue. You pointed out in option 7: the length to copy was much bigger (117 bytes instead 14). This was the fault.
Thanks

This is what I get in stack:

32800042()
> msvcr90d.dll!_CrtIsValidHeapPointer(const void * pUserData=0x651bd496) Line 2103 C++
0042fd58()
NewCamD_test.exe!pre_cpp_init() Line 327 + 0x21 bytes C
0042fe2c()
kernel32.dll!7556339a()
[Frames below may be incorrect and/or missing, no symbols loaded for kernel32.dll]
ntdll.dll!76f49ed2()
ntdll.dll!76f49ea5()

Please see my updated question as I've narrowed down to the line after which return in Login() fails over.
My guess is something not right in function str2char() as function RecvMsg() is completely empty and just calls str2char() function.

Sorry for incomplete code, I've added more. SendMessage is a function in class not a threading SendMessage().

stops inside void __cdecl _unlock() function

Removing Threading did not solved the issue. Given code I am trying to convert from Linux version to Windows. The original code does use multi-threading but I am currently working on console application and don't need any multi-threading. So for this reason I ignored any multi-threading lines. So purely in my code I am not using any threads.
But I am getting to the point where socket has to be used.

Can be this falt due to my PC AMD processor (not Intel)?

If I move include line as you suggested:

#ifdef CRYPT_H
#error CRYPT_H already defined
#endif

#include "crypt.h"

#ifndef CRYPT_H
#error CRYPT_H not defined
#endif

I get only 4 errors (same 4 times):
Error 3 error C3861: 'memset': identifier not found c:\PROJECTS\C++\NewCamD_test\NewCamD_test\crypt.cpp 142 NewCamD_test

under windows system md5.h file not found.

output still not right:
random: Length: 14 (Hex 2109560Ì203078u203078'203078á203078r203078½203078â20307
8r203078‗203078}2030784203078<203078¼2030786)

desKey: Length: 14 (Hex 203078☺203078☻203078♥203078♦203078♣203078♠2030782030720
3078 203078
203078♫)03078♀203078
Press any key to continue . . .

It shoud come like
random: Length: 14 (Hex DE 75 27 A0 72 AB ......)
desKey: Length: 14 (Hex 01 02 03 04 05 06 ......)

You are right, seems to be all of them made for Linux system. But this file should use MD5 algorythm with salt option so conversion is possible to Windows system.

So anyone has this file?

Hi David,
Thanks very much for explanation. I completely forgot that some time ago I've added VC6 library path in VS2008 options which was priority.
Removing this path has solved my problems. And changing Runtime library /MDd to something else cause more problems.

Thanks

David,

would you be able to tell me why I get these string errors after recompiling (added "using namespace std"):

Error 3 error LNK2019: unresolved external symbol "__declspec(dllimport) public: __thiscall std::basic_string<char,struct std::char_traits<char="">,class std::allocator<char> >::basic_string<char,struct std::char_traits<char="">,class std::allocator<char> >(char const *)" (__imp_??0?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@QAE@PBD@Z) referenced in function "public: virtual void __thiscall Test::Start(void)" (?Start@Test@@UAEXXZ) NewCamD_test.obj NewCamD_test
Error 4 error LNK2019: unresolved external symbol ___CxxFrameHandler3 referenced in function __ehhandler$?prn@Test@@UAEXV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@PAE@Z NewCamD_test.obj NewCamD_test
Error 5 error LNK2019: unresolved external symbol "__declspec(dllimport) public: void __thiscall std::basic_ostream<char,struct std::char_traits<char=""> >::_Osfx(void)" (__imp_?_Osfx@?$basic_ostream@DU?$char_traits@D@std@@@std@@QAEXXZ) referenced in function "public: __thiscall std::basic_ostream<char,struct std::char_traits<char=""> >::sentry::~sentry(void)" (??1sentry@?$basic_ostream@DU?$char_traits@D@std@@@std@@QAE@XZ) NewCamD_test.obj NewCamD_test
Error 6 error LNK2019: unresolved external symbol "__declspec(dllimport) public: void __thiscall std::basic_streambuf<char,struct std::char_traits<char=""> >::_Lock(void)" (__imp_?_Lock@?$basic_streambuf@DU?$char_traits@D@std@@@std@@QAEXXZ) referenced in function "public: __thiscall std::basic_ostream<char,struct std::char_traits<char=""> >::_Sentry_base::_Sentry_base(class std::basic_ostream<char,struct std::char_traits<char=""> > &)" (??0_Sentry_base@?$basic_ostream@DU?$char_traits@D@std@@@std@@QAE@AAV12@@Z) NewCamD_test.obj NewCamD_test
Error 7 error LNK2019: unresolved external symbol "__declspec(dllimport) public: void __thiscall std::basic_streambuf<char,struct std::char_traits<char=""> >::_Unlock(void)" (__imp_?_Unlock@?$basic_streambuf@DU?$char_traits@D@std@@@std@@QAEXXZ) referenced in function "public: __thiscall std::basic_ostream<char,struct std::char_traits<char=""> >::_Sentry_base::~_Sentry_base(void)" (??1_Sentry_base@?$basic_ostream@DU?$char_traits@D@std@@@std@@QAE@XZ) NewCamD_test.obj NewCamD_test

Thanks

Thanks David,

This was other way round. Setting /GS- flag solved my issues.