C2440 Error with SSPI

C2440 Error with SSPI

• xRuntime

  Hi Kevin,
  
  Thanks a lot. After using - (SEC_WCHAR*)pwszServerPrincipalName I got below error:
  
  Error 3 error LNK2001: unresolved external symbol " .cctor@@$$FYMXXZ" ( .cctor@@$$FYMXXZ) SSPI.obj
  
  But adding "msvcmrt.lib" in linkers list solved the problem.
  To add it in the list I used the following option Project properties->Configuration Properties->Linkers->Input->Additional Dependencies.
  
  Thanks again. I was stuck up with the issue from last one week.
  
  HV
  
  
  

• RPalmer

  I fixed the previews erros, but i have these error when i try to compile in Visual Studio 2005.
  any suggestion
  
  ------ Build started: Project: Microsoft.Samples.Security.SSPI, Configuration: Debug Win32 ------
  Compiling...
  SSPI.cpp
  c:\sspi\microsoft\samples\security\sspi\sspi\SSPI.h(326) : error C2838: 'Client' : illegal qualified name in member declaration
  c:\sspi\microsoft\samples\security\sspi\sspi\SSPI.h(347) : error C2838: 'Server' : illegal qualified name in member declaration
  Build log was saved at "file://c:\SSPI\Microsoft\Samples\Security\SSPI\SSPI\Debug\BuildLog.htm"
  Microsoft.Samples.Security.SSPI - 2 error(s), 0 warning(s)
  ========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========
  
  

• Wyatt Earp

  Try (SEC_WCHAR*)pwszServerPrincipalName instead - the trouble isn't the __pin, it's the const.
  
  Hope that helps
  
  Kevin Frei
  Visual C++
  

• GILLT

  You're missing a const:
  
      __wchar_t __pin * str1 = NULL;
      if (argc)
          str1 = PtrToStringChars(str);
  
  gives me the same error.  But:
  
      const __wchar_t __pin * str1 = NULL;
      if (argc)
          str1 = PtrToStringChars(str);
  
  works fine.
  
  Hope that helps!
  
  Kevin Frei
  Visual C++
  

• JamesPMiller

  Thanks,

  This post saved my day.

  -Sada

  
  

• Lorry Craig

  Lagear, Look for

  Code Snippet

  Package::Client

  and

  Code Snippet

  Package::Server

  and change them to

  Code Snippet

  CredentialType::Client

  and

  Code Snippet

  CredentialType::Server

  .

  Cheers,

  Todd.

  
  

• abhishek thakur

  .NET 2.0 actually has a class called NegotiateStream which does all the authentication for you.
  However, I'm trying to use a .NET 2.0 server authenticate a non .NET client and NegotiateStream didn't seem to work. Now I'm trying to get this .NET 1.0 solution to work in 2.0 and this post was a great help.
  
  

• exulted

  Hi Kevin,
  
  Thank you for the solution.
  After giving a const, C2440 error is resolved but it gives me another set of error.
  It is as below:
  
  error C2664: 'InitializeSecurityContextW' : cannot convert parameter 3 from 'const wchar_t __pin *' to 'SEC_WCHAR *'
  
  Code changes I made in SSPI.h is as below:
  
  const wchar_t __pin*  pwszServerPrincipalName = NULL;
              if ((credential->SecurityPackage == Credential::Package::Kerberos) || (credential->SecurityPackage == Credential::Package::Negotiate))
              pwszServerPrincipalName = PtrToStringChars(serverPrincipalName); 
                        
       SECURITY_STATUS sResult = InitializeSecurityContext(
      phCredential,         
      this->contextHandle,       
      pwszServerPrincipalName,       // [in] name of the target of the context. 
      reqContextAttributes,           SECURITY_NATIVE_DREP,        // 
      &inBuffDesc,             
      this->contextHandle,       
      &outBuffDesc,    
      pulContextAttributes,
       &tsLifeSpan );
  
  InitializeSecurityContext Declaration:
  
  SECURITY_STATUS SEC_ENTRY
  InitializeSecurityContextW(
      PCredHandle phCredential,             
      PCtxtHandle phContext,                 
  #if ISSP_MODE == 0
      PSECURITY_STRING pTargetName,
  #else
      SEC_WCHAR SEC_FAR * pszTargetName,      // Name of target
  #endif
      unsigned long fContextReq,             
      unsigned long Reserved1,              
      unsigned long TargetDataRep,          
      PSecBufferDesc pInput,                 
      unsigned long Reserved2,              
      PCtxtHandle phNewContext,              
      PSecBufferDesc pOutput,                
      unsigned long SEC_FAR * pfContextAttr, 
      PTimeStamp ptsExpiry                   
      );
  
  Here what happens is  "pwszServerPrincipalName" is a const wchar_t __pin*, it is further used in  "InitializeSecurityContext" and the structure of "InitializeSecurityContext" has 3rd parameter of type "SEC_WCHAR SEC_FAR * pszTargetName". Thus it gives C2664 error,"cannot convert const wchar_t__pin* to SEC_WCHAR *". I have highlighted the code which gives error. I tried giving (wchar_t __pin*)pwszServerPrincipalName. But it's not working fine.
  Please suggest me what can be done to resolve the C2664 error.
  
  HV

  
  
• C2440 Error with SSPI