/* Nessus Attack Scripting Language 
 *
 * Copyright (C) 2002 - 2004 Tenable Network Security
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2,
 * as published by the Free Software Foundation
 *
 * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 */

#include <stdarg.h>
#include <unistd.h>

#include "arglists.h"

#include "nasl_tree.h"
#include "nasl_global_ctxt.h"
#include "nasl_func.h"
#include "nasl_var.h"
#include "nasl_lex_ctxt.h"
#include "exec.h"


extern FILE * nasl_trace_fp;



void nasl_perror(lex_ctxt * lexic, char * msg, ...)
{
 va_list param;
 char debug_message[4096];
 char *script_name = "", *p;
 
 va_start(param, msg);

 if( lexic != NULL )
 {
  script_name = arg_get_value(lexic->script_infos, "script_name");
  if(script_name == NULL)
   script_name = "";
 }
 
 vsnprintf(debug_message, sizeof(debug_message), msg, param);
 for (p = debug_message; *p != '\0'; p ++)
   ;
 if (p == debug_message || p[-1] != '\n')
   fprintf(stderr, "[%d](%s) %s\n",getpid(), script_name, debug_message); 
 else
   fprintf(stderr, "[%d](%s) %s",getpid(), script_name, debug_message); 
 va_end(param);
}

/**
 * @brief Checks if the nasl_trace_fp is set.
 *
 * @return 0 if nasl_trace_fp == NULL, 1 otherwise.
 */
int
nasl_trace_enabled ()
{
 if (nasl_trace_fp == NULL)
   return 0;
 else
   return 1;
}

/**
 * @brief Prints debug message in printf fashion to nasl_trace_fp if it exists.
 *
 * Like @ref nasl_perror, but to the nasl_trace_fp.
 */
void
nasl_trace (lex_ctxt * lexic, char * msg, ...)
{
 va_list param;
 char debug_message[4096];
 char *script_name = "", *p;

 if (nasl_trace_fp == NULL)
  return;
 va_start (param, msg);

 if (lexic != NULL)
  {
    script_name = arg_get_value (lexic->script_infos, "script_name");
    if (script_name == NULL)
    script_name = "";
  }

 vsnprintf (debug_message, sizeof(debug_message), msg, param);
 for (p = debug_message; *p != '\0'; p ++)
   ;
 if (p == debug_message || p[-1] != '\n')
   fprintf (nasl_trace_fp, "[%d](%s) %s\n", getpid(), script_name, debug_message);
 else
   fprintf (nasl_trace_fp, "[%d](%s) %s", getpid(), script_name, debug_message);

 va_end (param);
}
