corsaro_file.h

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/* 
 * corsaro
 *
 * Alistair King, CAIDA, UC San Diego
 * corsaro-info@caida.org
 * 
 * Copyright (C) 2012 The Regents of the University of California.
 * 
 * This file is part of corsaro.
 *
 * corsaro 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 3 of the License, or
 * (at your option) any later version.
 *
 * corsaro 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 corsaro.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

#ifndef __CORSARO_FILE_H
#define __CORSARO_FILE_H

#include "config.h"
#include "corsaro_int.h"

#include <fcntl.h>
#include <stdarg.h>

#include "libtrace.h"
#include "wandio.h"

#define CORSARO_FILE_COMPRESS_LEVEL_DEFAULT 6

#define CORSARO_FILE_ZLIB_SUFFIX   ".gz"

#define CORSARO_FILE_BZ2_SUFFIX   ".bz2"

typedef struct corsaro_file
{
  corsaro_file_mode_t mode;

  union
  {
    struct
    {
      iow_t *io;
    } ms_wandio;

    struct
    {
      libtrace_out_t *trace;
    } ms_trace;
  } mode_state;

} corsaro_file_t;

typedef struct corsaro_file_in
{
  corsaro_file_mode_t mode;

  union
  {
    struct
    {
      io_t *io;
    } ms_wandio;

    struct
    {
      libtrace_t *trace;
    } ms_trace;
  } mode_state;

} corsaro_file_in_t;

/* this is what the 'public' should use to retrieve the mode */
#define CORSARO_FILE_MODE(file) (file->mode) 

#define state_wandio   mode_state.ms_wandio

#define wand_io       mode_state.ms_wandio.io

#define state_trace   mode_state.ms_trace

#define trace_io      mode_state.ms_trace.trace

corsaro_file_compress_t corsaro_file_detect_compression(char *filename);

corsaro_file_t *corsaro_file_open(struct corsaro *corsaro,
                              const char *filename, 
                              corsaro_file_mode_t mode,
                              corsaro_file_compress_t compress_type,
                              int compress_level,
                              int flags);

off_t corsaro_file_write(struct corsaro *corsaro,
                       corsaro_file_t *file, const void *buffer, off_t len);


off_t corsaro_file_write_packet(struct corsaro *corsaro,
                              corsaro_file_t *file, libtrace_packet_t *packet);

off_t corsaro_file_vprintf(struct corsaro *corsaro, corsaro_file_t *file, 
                         const char *format, va_list args);

off_t corsaro_file_printf(struct corsaro *corsaro, corsaro_file_t *file, 
                        const char *format, ...);

void corsaro_file_flush(struct corsaro *corsaro, corsaro_file_t *file);

void corsaro_file_close(struct corsaro *corsaro, corsaro_file_t *file);

corsaro_file_in_t *corsaro_file_ropen(const char *filename);

off_t corsaro_file_rread(corsaro_file_in_t *file, void *buffer, off_t len);

off_t corsaro_file_rgets(corsaro_file_in_t *file, void *buffer, off_t len);

off_t corsaro_file_rread_packet(corsaro_file_in_t *file, 
                                libtrace_packet_t *packet,
                                uint16_t len);

off_t corsaro_file_rpeek(corsaro_file_in_t *file, void *buffer, off_t len);

off_t corsaro_file_rseek(corsaro_file_in_t *file, off_t offset, int whence);

off_t corsaro_file_rtell(corsaro_file_in_t *file);

void corsaro_file_rclose(corsaro_file_in_t *file);

#endif /* __CORSARO_FILE_H */