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ulogd_OPRINT.c

/* ulogd_MAC.c, Version $Revision: 1.9 $
 *
 * ulogd output target for logging to a file 
 *
 * (C) 2000-2001 by Harald Welte <laforge@gnumonks.org>
 *
 *  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * $Id: ulogd_OPRINT.c,v 1.9 2002/12/09 14:42:43 laforge Exp $
 *
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ulogd/ulogd.h>
#include <ulogd/conffile.h>

#ifndef ULOGD_OPRINT_DEFAULT
#define ULOGD_OPRINT_DEFAULT  "/var/log/ulogd.pktlog"
#endif

#define NIPQUAD(addr) \
      ((unsigned char *)&addr)[0], \
      ((unsigned char *)&addr)[1], \
        ((unsigned char *)&addr)[2], \
        ((unsigned char *)&addr)[3]

#define HIPQUAD(addr) \
        ((unsigned char *)&addr)[3], \
        ((unsigned char *)&addr)[2], \
        ((unsigned char *)&addr)[1], \
        ((unsigned char *)&addr)[0]

static FILE *of = NULL;

int _output_print(ulog_iret_t *res)
{
      ulog_iret_t *ret;
      
      fprintf(of, "===>PACKET BOUNDARY\n");
      for (ret = res; ret; ret = ret->cur_next) {
            fprintf(of,"%s=", ret->key);
            switch (ret->type) {
                  case ULOGD_RET_STRING:
                        fprintf(of, "%s\n", (char *) ret->value.ptr);
                        break;
                  case ULOGD_RET_BOOL:
                  case ULOGD_RET_INT8:
                  case ULOGD_RET_INT16:
                  case ULOGD_RET_INT32:
                        fprintf(of, "%d\n", ret->value.i32);
                        break;
                  case ULOGD_RET_UINT8:
                  case ULOGD_RET_UINT16:
                  case ULOGD_RET_UINT32:
                        fprintf(of, "%u\n", ret->value.ui32);
                        break;
                  case ULOGD_RET_IPADDR:
                        fprintf(of, "%u.%u.%u.%u\n", 
                              HIPQUAD(ret->value.ui32));
                        break;
                  case ULOGD_RET_NONE:
                        fprintf(of, "<none>");
                        break;
            }
      }
      return 0;
}

static config_entry_t outf_ce = { NULL, "dumpfile", CONFIG_TYPE_STRING, 
                          CONFIG_OPT_NONE, 0,
                          { string: ULOGD_OPRINT_DEFAULT } };

void sighup_handler_print(int signal)
{

      switch (signal) {
      case SIGHUP:
            ulogd_log(ULOGD_NOTICE, "PKTLOG: reopening logfile\n");
            fclose(of);
            of = fopen(outf_ce.u.string, "a");
            if (!of) {
                  ulogd_log(ULOGD_FATAL, "can't open PKTLOG: %s\n",
                        strerror(errno));
                  exit(2);
            }
            break;
      default:
            break;
      }
}

static ulog_output_t base_op[] = {
      { NULL, "oprint", &_output_print, &sighup_handler_print },
      { NULL, "", NULL, NULL },
};


static void _base_reg_op(void)
{
      ulog_output_t *op = base_op;
      ulog_output_t *p;

      for (p = op; p->output; p++)
            register_output(p);
}

void _init(void)
{
#ifdef DEBUG
      of = stdout;
#else
      config_register_key(&outf_ce);
      config_parse_file(0);

      of = fopen(outf_ce.u.string, "a");
      if (!of) {
            ulogd_log(ULOGD_FATAL, "can't open PKTLOG: %s\n", 
                  strerror(errno));
            exit(2);
      }           
#endif
            
      _base_reg_op();
}

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