crt_io.c

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/* Linux Prism II Stumbler - Utility Scan for 802_11 networks under Linux
 * 
 * File : crt_io.c
 * Project : WifiScanner (c) 2002 Hervé Schauer Consultants
 * Usage : This utility is written for use with IEEE 802.11 adapters based
 * on Intersil's PRISM II chipset (PCMCIA).
 * 
 * Base code was from prismstumbler Jan Fernquist <Jan.B.Fernquist@telia.com>
 * and wlanctl from www.linux-wlan.com
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 * $Id: crt_io.c 178 2007-08-11 16:57:24Z poggij $
 */

#include <include.h>
#include <src/crt_io.h>
#include <src/interface.h>
#include <src/errmsg.h>
#ifdef WITH_SYSLOG
#include <syslog.h>
#endif

extern UINT8 CursesIsInUse;
extern ConfigStruct config;

#ifdef HAVE_LIBNCURSES
extern WINDOW *RealTime_WND;
#endif
#ifdef WITH_THREAD
extern pthread_mutex_t screen_mutex;
#endif


/*
 * Some internal forward refs
 */

/*----------------------------------------------------------------
   Function to write a message and exit (fatal error)
   Write with and without curses
   exit curses environment before all thinks but after 3 secondes
     so we can read screen before death condition
----------------------------------------------------------------*/
void fatal(int error_code, char *fmt, ...)
{
  va_list ap;

#ifdef HAVE_LIBNCURSES
  if (CursesIsInUse == TRUE)
    RefreshAllWND();            // Refresh All Windows
  if (config.DebugLevel >= 1)
    sleep(3);                   // Sleep for 3 seconds
#else
  fflush(stdout);               // Refresh stdout buffer
#endif
  va_start(ap, fmt);
#ifdef HAVE_LIBNCURSES
  if (CursesIsInUse == TRUE)
    EndCurses();
#endif
  vfprintf(stderr, fmt, ap);
  vfprintf(stderr, ">> %s\n", ErrorsMsg[error_code]);
  va_end(ap);
  exit(error_code);
}

/*----------------------------------------------------------------
   Function to write DEBUG informations
   Write with and without curses
   If DebugLevel is greater than 0 we refresh screen else not
----------------------------------------------------------------*/
void debug(UINT8 DL, char *fmt, ...)
{
  va_list ap;

  if (config.DebugLevel < DL)
    return;                     // Return if debug level is not enougth
  if (CursesIsInUse == FALSE)
    fflush(stdout);             // Refresh stdout buffer
  va_start(ap, fmt);
#ifdef HAVE_LIBNCURSES
  if (CursesIsInUse == TRUE) {
#ifdef WITH_THREAD
    pthread_mutex_lock(&screen_mutex);
#endif
    vwprintw(RealTime_WND, fmt, ap);
    if (config.DebugLevel > 0)
      wrefresh(RealTime_WND);
#ifdef WITH_THREAD
    pthread_mutex_unlock(&screen_mutex);
#endif
  } else {
#endif
    vfprintf(stderr, fmt, ap);
    fflush(stderr);
#ifdef HAVE_LIBNCURSES
  }
#endif
  va_end(ap);
}

/*----------------------------------------------------------------
   Function to write DEBUG informations with the time stamps in ms
   Write with and without curses
   If DebugLevel is greater than 0 we refresh screen else not
----------------------------------------------------------------*/
void debugTS(UINT8 DL, char *fmt, ...)
{
  va_list ap;
  struct timeb binary_now;

  //struct tm *ascii_now = NULL;

  ftime(&binary_now);
  //ascii_now = localtime (&binary_now.time);

  if (config.DebugLevel < DL)
    return;                     // Return if debug level is not enougth
  if (CursesIsInUse == FALSE)
    fflush(stdout);             // Refresh stdout buffer
  va_start(ap, fmt);
#ifdef HAVE_LIBNCURSES
  if (CursesIsInUse == TRUE) {
#ifdef WITH_THREAD
    pthread_mutex_lock(&screen_mutex);
#endif
    wprintw(RealTime_WND, "%d.%03d:", (int) binary_now.time,
            binary_now.millitm);
    vwprintw(RealTime_WND, fmt, ap);
    if (config.DebugLevel > 0)
      wrefresh(RealTime_WND);
#ifdef WITH_THREAD
    pthread_mutex_unlock(&screen_mutex);
#endif
  } else {
#endif
    vfprintf(stderr, fmt, ap);
    fflush(stderr);
#ifdef HAVE_LIBNCURSES
  }
#endif
  va_end(ap);
}

/*----------------------------------------------------------------
   Function to write WARNING informations
   Write with and without curses
----------------------------------------------------------------*/
void warning(char *fmt, ...)
{
  va_list ap;

  if (CursesIsInUse == FALSE)
    fflush(stdout);             // Refresh stdout buffer
  va_start(ap, fmt);
#ifdef HAVE_LIBNCURSES
  if (CursesIsInUse == TRUE) {
#ifdef WITH_THREAD
    pthread_mutex_lock(&screen_mutex);
#endif
    vwprintw(RealTime_WND, fmt, ap);
    if (config.DebugLevel > 0)
      wrefresh(RealTime_WND);
#ifdef WITH_THREAD
    pthread_mutex_unlock(&screen_mutex);
#endif
  } else {
#endif
    vfprintf(stderr, fmt, ap);
    fflush(stderr);
#ifdef HAVE_LIBNCURSES
  }
#endif
  va_end(ap);
}

/*----------------------------------------------------------------
   Function to write WARNING informations only if error code is not
    NO_ERROR
   Write with and without curses
----------------------------------------------------------------*/
void warning_if_error(int errorcode)
{
  if (errorcode != NO_ERROR) {
    if (CursesIsInUse == FALSE)
      fflush(stdout);           // Refresh stdout buffer
#ifdef HAVE_LIBNCURSES
    if (CursesIsInUse == TRUE) {
#ifdef WITH_THREAD
      pthread_mutex_lock(&screen_mutex);
#endif
      wprintw(RealTime_WND, "Warning : %s\n", ErrorsMsg[errorcode]);
      if (config.DebugLevel > 0)
        wrefresh(RealTime_WND);
#ifdef WITH_THREAD
      pthread_mutex_unlock(&screen_mutex);
#endif
    } else {
#endif
      fprintf(stderr, "Warning : %s\n", ErrorsMsg[errorcode]);
      fflush(stderr);
#ifdef HAVE_LIBNCURSES
    }
#endif
  }
}

/********************/
void DumpHexPaquets(WINDOW * RealTime_WND, UINT8 msgbuf[], int recvlen)
{
  unsigned int n, i, end;

#ifdef WITH_THREAD
  pthread_mutex_lock(&screen_mutex);
#endif
  wprintw(RealTime_WND, "MSG=\n");

  for (n = 0; n < recvlen; n += 16) {
    if (n > MAX_BUFFER_SIZE)
      break;                    // Please ... No core dump :-)
    end = MIN_OF((recvlen - n), 16);
    wprintw(RealTime_WND, "0x%04X - ", n);

    // Print Hex part
    for (i = 0; i < 16; i++) {
      /* Write only packet, not garbage ;-) */
      if (i < end)
        wprintw(RealTime_WND, "%02X", (UINT8) msgbuf[n + i]);
      else
        wprintw(RealTime_WND, "  ");
      /* Separator every 2 bytes */
      if (!((i + 1) % 2))
        wprintw(RealTime_WND, " ");
    }

    // Print ASCI part
    for (i = 0; i < end; i++) {
      // Print caractere if it's printable
      if (msgbuf[n + i] >= 0x20 && msgbuf[n + i] <= 0x7E)
        wprintw(RealTime_WND, "%c", (char) msgbuf[n + i]);
      else
        wprintw(RealTime_WND, ".");
    }
    /* End of line each 16 bytes */
    wprintw(RealTime_WND, "\n");
  }
  wrefresh(RealTime_WND);
#ifdef WITH_THREAD
  pthread_mutex_unlock(&screen_mutex);
#endif
}

/*----------------------------------------------------------------
   Function to write IDS informations
   Write to screen and if necessary to Syslog
----------------------------------------------------------------*/
void Send_IDS_Warning(char *message)
{
  warning("%s", message);
#ifdef WITH_SYSLOG
  if (config.SendAlert2Syslog == TRUE)
    syslog(LOG_USER || LOG_WARNING, "%s", message);
#endif
}

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