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/* Zebra logging funcions.
 * Copyright (C) 1997, 1998, 1999 Kunihiro Ishiguro
 *
 * This file is part of GNU Zebra.
 *
 * GNU Zebra 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, or (at your option) any
 * later version.
 *
 * GNU Zebra 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 GNU Zebra; see the file COPYING.  If not, write to the Free
 * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
 * 02111-1307, USA.  
 */

#ifndef _ZEBRA_LOG_H
#define _ZEBRA_LOG_H

#include <syslog.h>

#define ZLOG_NOLOG              0x00
#define ZLOG_FILE		0x01
#define ZLOG_SYSLOG		0x02
#define ZLOG_STDOUT             0x04
#define ZLOG_STDERR             0x08

#define ZLOG_NOLOG_INDEX        0
#define ZLOG_FILE_INDEX         1
#define ZLOG_SYSLOG_INDEX       2
#define ZLOG_STDOUT_INDEX       3
#define ZLOG_STDERR_INDEX       4
#define ZLOG_MAX_INDEX          5

typedef enum 
{
  ZLOG_NONE,
  ZLOG_DEFAULT,
  ZLOG_ZEBRA,
  ZLOG_RIP,
  ZLOG_BGP,
  ZLOG_OSPF,
  ZLOG_RIPNG,  
  ZLOG_OSPF6,
  ZLOG_ISIS,
  ZLOG_MASC
} zlog_proto_t;

struct zlog 
{
  const char *ident;
  zlog_proto_t protocol;
  int flags;
  FILE *fp;
  char *filename;
  int syslog;
  int stat;
  int connected;
  int maskpri;		/* as per syslog setlogmask */
  int priority;		/* as per syslog priority */
  int facility;		/* as per syslog facility */
  int record_priority;
};

/* Message structure. */
struct message
{
  int key;
  const char *str;
};

/* Default logging strucutre. */
extern struct zlog *zlog_default;

/* Open zlog function */
struct zlog *openzlog (const char *, int, zlog_proto_t, int, int);

/* Close zlog function. */
void closezlog (struct zlog *zl);

/* GCC have printf type attribute check.  */
#ifdef __GNUC__
#define PRINTF_ATTRIBUTE(a,b) __attribute__ ((__format__ (__printf__, a, b)))
#else
#define PRINTF_ATTRIBUTE(a,b)
#endif /* __GNUC__ */

/* Generic function for zlog. */
void zlog (struct zlog *zl, int priority, const char *format, ...) PRINTF_ATTRIBUTE(3, 4);

/* Handy zlog functions. */
void zlog_err (const char *format, ...) PRINTF_ATTRIBUTE(1, 2);
void zlog_warn (const char *format, ...) PRINTF_ATTRIBUTE(1, 2);
void zlog_info (const char *format, ...) PRINTF_ATTRIBUTE(1, 2);
void zlog_notice (const char *format, ...) PRINTF_ATTRIBUTE(1, 2);
void zlog_debug (const char *format, ...) PRINTF_ATTRIBUTE(1, 2);

/* For bgpd's peer oriented log. */
void plog_err (struct zlog *, const char *format, ...);
void plog_warn (struct zlog *, const char *format, ...);
void plog_info (struct zlog *, const char *format, ...);
void plog_notice (struct zlog *, const char *format, ...);
void plog_debug (struct zlog *, const char *format, ...);

/* Set zlog flags. */
void zlog_set_flag (struct zlog *zl, int flags);
void zlog_reset_flag (struct zlog *zl, int flags);

/* Set zlog filename. */
int zlog_set_file (struct zlog *zl, int flags, char *filename);
int zlog_reset_file (struct zlog *zl);

/* Rotate log. */
int zlog_rotate ();

/* For hackey massage lookup and check */
#define LOOKUP(x, y) mes_lookup(x, x ## _max, y)

char *lookup (struct message *, int);
char *mes_lookup (struct message *meslist, int max, int index);

extern const char *zlog_priority[];

#endif /* _ZEBRA_LOG_H */