nmap/nmap_error.cc

/***************************************************************************
 * nmap_error.cc -- Some simple error handling routines.                   *
 *                                                                         *
 ***********************IMPORTANT NMAP LICENSE TERMS************************
 *                                                                         *
 * The Nmap Security Scanner is (C) 1996-2008 Insecure.Com LLC. Nmap is    *
 * also a registered trademark of Insecure.Com LLC.  This program is free  *
 * software; you may redistribute and/or modify it under the terms of the  *
 * GNU General Public License as published by the Free Software            *
 * Foundation; Version 2 with the clarifications and exceptions described  *
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 * this software under certain conditions.  If you wish to embed Nmap      *
 * technology into proprietary software, we sell alternative licenses      *
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 * included with Nmap.                                                     *
 *                                                                         *
 ***************************************************************************/

/* $Id$ */

#include "nmap_error.h"
#include "output.h"
#include "NmapOps.h"

extern NmapOps o;

#ifdef WIN32
#include <windows.h>
#endif /* WIN32 */

void fatal(const char *fmt, ...) {
  va_list  ap;
  va_start(ap, fmt);
  log_vwrite(LOG_STDERR, fmt, ap);
  va_end(ap);
  if (o.log_errors) {
    va_start(ap, fmt);
    log_vwrite(LOG_NORMAL, fmt, ap);
    va_end(ap);
  }
  log_write(o.log_errors? LOG_NORMAL|LOG_STDERR : LOG_STDERR, "\nQUITTING!\n");
  exit(1);
}

void error(const char *fmt, ...) {
  va_list  ap;

  va_start(ap, fmt);
  log_vwrite(LOG_STDERR, fmt, ap);
  va_end(ap);
  
  if (o.log_errors) {
    va_start(ap, fmt);
    log_vwrite(LOG_NORMAL, fmt, ap);
    va_end(ap);
  }
  log_write(o.log_errors? LOG_NORMAL|LOG_STDERR : LOG_STDERR, "\n");
  return;
}

void pfatal(const char *err, ...) {
#ifdef WIN32
  int lasterror =0;
  char *errstr = NULL;
#endif
  va_list ap;
  
  va_start(ap, err);
  log_vwrite(LOG_STDERR, err, ap);
  va_end(ap);

  if (o.log_errors) {
    va_start(ap, err);
    log_vwrite(LOG_NORMAL, err, ap);
    va_end(ap);
  }

#ifdef WIN32
  lasterror = GetLastError();
  FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER|FORMAT_MESSAGE_FROM_SYSTEM, 
		NULL, lasterror, MAKELANGID (LANG_NEUTRAL, SUBLANG_DEFAULT),
		(LPTSTR) &errstr,  0, NULL);
  log_write(o.log_errors? LOG_NORMAL|LOG_STDERR : LOG_STDERR, ": %s (%d)\n", 
	    errstr, lasterror);
  HeapFree(GetProcessHeap(), 0, errstr);
#else
  log_write(o.log_errors? LOG_NORMAL|LOG_STDERR : LOG_STDERR, ": %s (%d)\n", 
	    strerror(errno), errno);
#endif /* WIN32 perror() compatability switch */
  if (o.log_errors) log_flush(LOG_NORMAL);
  fflush(stderr);
  exit(1);
}

/* This function is the Nmap version of perror.  It is just copy and
   pasted from pfatal(), except the exit has been replaced with a
   return. */
void gh_perror(const char *err, ...) {
#ifdef WIN32
  int lasterror =0;
  char *errstr = NULL;
#endif
  va_list ap;
  
  va_start(ap, err);
  log_vwrite(LOG_STDERR, err, ap);
  va_end(ap);

  if (o.log_errors) {
    va_start(ap, err);
    log_vwrite(LOG_NORMAL, err, ap);
    va_end(ap);
  }

#ifdef WIN32
  lasterror = GetLastError();
  FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER|FORMAT_MESSAGE_FROM_SYSTEM, 
		NULL, lasterror, MAKELANGID (LANG_NEUTRAL, SUBLANG_DEFAULT),
		(LPTSTR) &errstr,  0, NULL);
  log_write(o.log_errors? LOG_NORMAL|LOG_STDERR : LOG_STDERR, ": %s (%d)\n", 
	    errstr, lasterror);
  HeapFree(GetProcessHeap(), 0, errstr);
#else
  log_write(o.log_errors? LOG_NORMAL|LOG_STDERR : LOG_STDERR, ": %s (%d)\n", 
	    strerror(errno), errno);
#endif /* WIN32 perror() compatability switch */
  if (o.log_errors) log_flush(LOG_NORMAL);
  fflush(stderr);
  return;
}