secur32: Adding AcceptSecurityContext to the NTLM security provider.

dlls/secur32/ntlm.c

@@ -741,7 +741,232 @@ static SECURITY_STATUS SEC_ENTRY ntlm_AcceptSecurityContext(
      ptsExpiry);
     if (phCredential)
     {
-        ret = SEC_E_UNSUPPORTED_FUNCTION;
+        PNegoHelper helper = (PNegoHelper)phCredential->dwLower;
+        /* Max size of input data is 2010 byte, as that's the maximum size 
+         * ntlm_auth will handle*/
+        char *buffer = HeapAlloc(GetProcessHeap(), 0, 
+                sizeof(char) * NTLM_MAX_BUF);
+        PBYTE bin = HeapAlloc(GetProcessHeap(),0, sizeof(BYTE) * NTLM_MAX_BUF);
+        int buffer_len, bin_len, max_len = NTLM_MAX_BUF;
+        ULONG ctxt_attr = 0;
+
+        if(helper->mode != NTLM_SERVER)
+        {
+            HeapFree(GetProcessHeap(), 0, buffer);
+            HeapFree(GetProcessHeap(), 0, bin);
+            return SEC_E_INVALID_HANDLE;
+        }
+
+        /* Handle all the flags */
+        if(fContextReq & ISC_REQ_ALLOCATE_MEMORY)
+        {
+            FIXME("AcceptSecurityContext(): ISC_REQ_ALLOCATE_MEMORY stub\n");
+        }
+        if(fContextReq & ISC_REQ_CONFIDENTIALITY)
+        {
+            FIXME("AcceptSecurityContext(): ISC_REQ_CONFIDENTIALITY stub\n");
+        }
+        if(fContextReq & ISC_REQ_CONNECTION)
+        {
+            /* This is default, so we'll enable it */
+            ctxt_attr |= ISC_RET_CONNECTION;
+        }
+        if(fContextReq & ISC_REQ_EXTENDED_ERROR)
+        {
+            FIXME("AcceptSecurityContext(): ISC_REQ_EXTENDED_ERROR stub\n");
+        }
+        if(fContextReq & ISC_REQ_INTEGRITY)
+        {
+            FIXME("AcceptSecurityContext(): ISC_REQ_INTEGRITY stub\n");
+        }
+        if(fContextReq & ISC_REQ_MUTUAL_AUTH)
+        {
+            FIXME("AcceptSecurityContext(): ISC_REQ_MUTUAL_AUTH stub\n");
+        }
+        if(fContextReq & ISC_REQ_REPLAY_DETECT)
+        {
+            FIXME("AcceptSecurityContext(): ISC_REQ_REPLAY_DETECT stub\n");
+        }
+        if(fContextReq & ISC_REQ_SEQUENCE_DETECT)
+        {
+            FIXME("AcceptSecurityContext(): ISC_REQ_SEQUENCE_DETECT stub\n");
+        }
+        if(fContextReq & ISC_REQ_STREAM)
+        {
+            FIXME("AcceptSecurityContext(): ISC_REQ_STREAM stub\n");
+        }
+        /* Done with the flags */
+        if(TargetDataRep == SECURITY_NETWORK_DREP){
+            FIXME("Don't know how to do SECURITY_NETWORK_DREP\n");
+            HeapFree(GetProcessHeap(), 0, buffer);
+            HeapFree(GetProcessHeap(), 0, bin);
+            return SEC_E_UNSUPPORTED_FUNCTION;
+        }
+
+        
+        if(phContext == NULL)
+        {
+            /* This is the first call to AcceptSecurityHandle */
+            if(pInput == NULL)
+            {
+                HeapFree(GetProcessHeap(), 0, buffer);
+                HeapFree(GetProcessHeap(), 0, bin);
+                return SEC_E_INCOMPLETE_MESSAGE;
+            }
+            
+            if(pInput->cBuffers < 1)
+            {
+                HeapFree(GetProcessHeap(), 0, buffer);
+                HeapFree(GetProcessHeap(), 0, bin);
+                return SEC_E_INCOMPLETE_MESSAGE;
+            }
+
+            if(pInput->pBuffers[0].cbBuffer > max_len)
+            {
+                HeapFree(GetProcessHeap(), 0, buffer);
+                HeapFree(GetProcessHeap(), 0, bin);
+                return SEC_E_INVALID_TOKEN;
+            }
+            else
+                bin_len = pInput->pBuffers[0].cbBuffer;
+
+            /* This is the YR request from the client, encode to base64 */
+            
+            memcpy(bin, pInput->pBuffers[0].pvBuffer, bin_len);
+
+            lstrcpynA(buffer, "YR ", max_len-1);
+
+            if((ret = encodeBase64(bin, bin_len, buffer+3, max_len-3,
+                        &buffer_len)) != SEC_E_OK)
+            {
+                HeapFree(GetProcessHeap(), 0, buffer);
+                HeapFree(GetProcessHeap(), 0, bin);
+                return ret;
+            }
+            
+            TRACE("Client sent: %s\n", debugstr_a(buffer));
+            
+            if((ret = run_helper(helper, buffer, max_len, &buffer_len)) !=
+                        SEC_E_OK)
+            {
+                HeapFree(GetProcessHeap(), 0, buffer);
+                HeapFree(GetProcessHeap(), 0, bin);
+                return ret;
+            }
+
+            TRACE("Reply from ntlm_auth: %s\n", debugstr_a(buffer));
+            /* The expected answer is TT <base64 blob> */
+
+            if(strncmp(buffer, "TT ", 3) != 0)
+            {
+                HeapFree(GetProcessHeap(), 0, buffer);
+                HeapFree(GetProcessHeap(), 0, bin);
+                return SEC_E_INVALID_TOKEN;
+            }
+
+            if((ret = decodeBase64(buffer+3, buffer_len-3, bin, max_len,
+                            &bin_len)) != SEC_E_OK)
+            {
+                HeapFree(GetProcessHeap(), 0, buffer);
+                HeapFree(GetProcessHeap(), 0, bin);
+                return ret;
+            }
+            
+            /* send this to the client */
+            if(pOutput == NULL)
+            {
+                HeapFree(GetProcessHeap(), 0, buffer);
+                HeapFree(GetProcessHeap(), 0, bin);
+                return SEC_E_INSUFFICIENT_MEMORY;
+            }
+
+            if(pOutput->cBuffers < 1)
+            {
+                HeapFree(GetProcessHeap(), 0, buffer);
+                HeapFree(GetProcessHeap(), 0, bin);
+                return SEC_E_INSUFFICIENT_MEMORY;
+            }
+
+            pOutput->pBuffers[0].cbBuffer = bin_len;
+            pOutput->pBuffers[0].BufferType = SECBUFFER_DATA;
+            memcpy(pOutput->pBuffers[0].pvBuffer, bin, bin_len);
+            ret = SEC_I_CONTINUE_NEEDED;
+            
+        }
+        else
+        {
+            /* we expect a KK request from client */
+            if(pInput == NULL)
+            {
+                HeapFree(GetProcessHeap(), 0, buffer);
+                HeapFree(GetProcessHeap(), 0, bin);
+                return SEC_E_INCOMPLETE_MESSAGE;
+            }
+            
+            if(pInput->cBuffers < 1)
+            {
+                HeapFree(GetProcessHeap(), 0, buffer);
+                HeapFree(GetProcessHeap(), 0, bin);
+                return SEC_E_INCOMPLETE_MESSAGE;
+            }
+
+            if(pInput->pBuffers[0].cbBuffer > max_len)
+            {
+                HeapFree(GetProcessHeap(), 0, buffer);
+                HeapFree(GetProcessHeap(), 0, bin);
+                return SEC_E_INVALID_TOKEN;
+            }
+            else
+                bin_len = pInput->pBuffers[0].cbBuffer;
+
+            memcpy(bin, pInput->pBuffers[0].pvBuffer, bin_len);
+
+            lstrcpynA(buffer, "KK ", max_len-1);
+
+            if((ret = encodeBase64(bin, bin_len, buffer+3, max_len-3,
+                        &buffer_len)) != SEC_E_OK)
+            {
+                HeapFree(GetProcessHeap(), 0, buffer);
+                HeapFree(GetProcessHeap(), 0, bin);
+                return ret;
+            }
+            
+            TRACE("Client sent: %s\n", debugstr_a(buffer));
+            
+            if((ret = run_helper(helper, buffer, max_len, &buffer_len)) !=
+                        SEC_E_OK)
+            {
+                HeapFree(GetProcessHeap(), 0, buffer);
+                HeapFree(GetProcessHeap(), 0, bin);
+                return ret;
+            }
+
+            TRACE("Reply from ntlm_auth: %s\n", debugstr_a(buffer));
+            
+            if(strncmp(buffer, "AF ", 3) != 0)
+            {
+                if(strncmp(buffer, "NA ", 3) == 0)
+                {
+                    HeapFree(GetProcessHeap(), 0, buffer);
+                    HeapFree(GetProcessHeap(), 0, bin);
+                    return SEC_E_LOGON_DENIED;
+                }
+                else
+                {
+                    HeapFree(GetProcessHeap(), 0, buffer);
+                    HeapFree(GetProcessHeap(), 0, bin);
+                    return SEC_E_INVALID_TOKEN;
+                }
+            }
+            
+            ret = SEC_E_OK;
+        }
+        
+        phNewContext->dwUpper = ctxt_attr;
+        phNewContext->dwLower = ret;
+        HeapFree(GetProcessHeap(), 0, buffer);
+        HeapFree(GetProcessHeap(), 0, bin);
+
     }
     else
     {