Problem: Can dhcp callout dll insert new row into

• • Reply

  15 years ago

  by quesxion

  kexh

  , Malaysia

  Joined 15 years ago

  I current working on this dll, but i found the dll doesn't response to any of the cdatabase execute response? I have try all the cdatabase and sql in c++ console and found that it can be run. The database is open success and the sql statement is correct.
  

  
  After then i put it into the dhcp callout dll, and compile success.
  

  
  When i add it into the registry and try the dhcp server, it doesn't have any response database table. And i using sql server for the dsn.
  

  
  Here is my code
  

  
  

  include "stdafx.h"

  
  

  include "callout.h"

  
  

  
  

  ifdef _DEBUG

  
  

  define new DEBUG_NEW

  
  

  endif

  
  

  
  CDatabase dbCallout;
  

  
  struct tm *newtime;
  char ampm[] = "AM";
  _time64t longtime;
  

  
  CString strCmd, strPrimaryKey, strTime;
  int nRetCode = 0;
  

  
  BOOL APIENTRY DllMain( HANDLE hModule,
  DWORD ulreasonforcall,
  LPVOID lpReserved )
  {
  switch (ulreasonforcall)
  {
  case DLLPROCESSATTACH:
  break;
  case DLLTHREADATTACH:
  break;
  case DLLTHREADDETACH:
  break;
  case DLLPROCESSDETACH:
  break;
  } return TRUE;
  }
  

  
  DWORD CALLBACK DhcpControlHook(DWORD dwControlCode,LPVOID lpReserved)
  {
  switch (dwControlCode)
  {
  case DHCPCONTROLSTART: {
  time64( &longtime ); /* Get time as long integer. /
  newtime = _localtime64(&long_time); / Convert to local time. */
  

  
  if( newtime->tmhour > 12 ) /* Set up extension. */
  strcpy( ampm, "PM" );
  if( newtime->tmhour > 12 ) /* Convert from 24-hour */
  newtime->tmhour -= 12; /* to 12-hour clock. /
  if( newtime->tm_hour == 0 ) /Set hour to 12 if midnight. */
  newtime->tm_hour = 12;
  

  
  strPrimaryKey.Format("C%.2d%.2d%.2d%.2d%.2d%.2d", newtime->tmyear - 100, newtime->tmmon, newtime->tmmday, newtime->tmhour, newtime->tmmin, newtime->tmsec);
  strTime = asctime(newtime);
  

  
  strCmd = "INSERT INTO CalloutControl (controlid, controldesc, controldate) VALUES ('" + strPrimaryKey + "', 'DHCP server have started!', '" + strTime + "')";
  

  
  dbCallout.ExecuteSQL(strCmd);
  dbCallout.Close();
  

  
  break;
  }
  case DHCPCONTROLSTOP:
  {
  

  
  break;
  }
  case DHCPCONTROLPAUSE:
  {
  

  
  break;
  }
  case DHCPCONTROLCONTINUE:
  {
  break;
  }
  }
  return ERROR_SUCCESS;
  }
  

  
  DWORD CALLBACK DhcpServerCalloutEntry(LPWSTR ChainDlls,DWORD CalloutVersion,LPDHCPCALLOUTTABLE CalloutTbl)
  {
  

  
  CalloutTbl->DhcpAddressDelHook=DhcpAddressDelHook;
  CalloutTbl->DhcpControlHook=DhcpControlHook;
  CalloutTbl->DhcpDeleteClientHook=DhcpDeleteClientHook;
  CalloutTbl->DhcpPktDropHook=DhcpPktDropHook;
  CalloutTbl->DhcpAddressDelHook=DhcpAddressDelHook;
  CalloutTbl->DhcpNewPktHook=DhcpNewPktHook;
  CalloutTbl->DhcpPktSendHook=DhcpPktSendHook;
  

  
  dbCallout.Open(_T("CALLOUT"), FALSE, FALSE, _T("ODBC;"));
  

  
  return ERROR_SUCCESS;
  }
  

  
  What wrong in this code? Can dll file insert new row into dsn? Some expert please help me!!!

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