304 lines
9.3 KiB
C
304 lines
9.3 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-3-Clause
|
|
*
|
|
* Copyright (c) 1983, 1988, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef SYSKLOGD_SYSLOGD_H_
|
|
#define SYSKLOGD_SYSLOGD_H_
|
|
|
|
#include "config.h"
|
|
|
|
#include <fcntl.h>
|
|
#include <netdb.h> /* struct addrinfo */
|
|
#ifdef __linux__
|
|
#include <sys/klog.h>
|
|
#endif
|
|
#include <sys/param.h> /* MAXHOSTNAMELEN */
|
|
#include <sys/socket.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/types.h>
|
|
#include <sys/un.h> /* struct sockaddr_un */
|
|
#include "queue.h"
|
|
#include "syslog.h"
|
|
|
|
#define MAXLINE 2048 /* maximum line length */
|
|
#define MAXSVLINE MAXLINE /* maximum saved line length */
|
|
#define DEFUPRI (LOG_USER | LOG_NOTICE)
|
|
#define DEFSPRI (LOG_KERN | LOG_CRIT)
|
|
#define TIMERINTVL 30 /* interval for checking flush/nslookip */
|
|
#define RCVBUF_MINSIZE (80 * MAXLINE) /* minimum size of dgram rcv buffer */
|
|
|
|
/*
|
|
* Linux uses EIO instead of EBADFD (mrn 12 May 96)
|
|
*/
|
|
#ifdef __linux__
|
|
#define EHANGUP EIO
|
|
#else
|
|
#define EHANGUP EBADFD
|
|
#endif
|
|
|
|
#ifndef UTMP_FILE
|
|
#ifdef UTMP_FILENAME
|
|
#define UTMP_FILE UTMP_FILENAME
|
|
#else
|
|
#ifdef _PATH_UTMP
|
|
#define UTMP_FILE _PATH_UTMP
|
|
#else
|
|
#define UTMP_FILE "/etc/utmp"
|
|
#endif
|
|
#endif
|
|
#endif
|
|
|
|
#ifndef _PATH_LOGCONF
|
|
#define _PATH_LOGCONF SYSCONFDIR "/syslog.conf"
|
|
#endif
|
|
|
|
#ifndef _PATH_LOGPID
|
|
#define _PATH_LOGPID RUNSTATEDIR "/syslogd.pid"
|
|
#endif
|
|
|
|
#ifndef _PATH_DEV
|
|
#define _PATH_DEV "/dev/"
|
|
#endif
|
|
|
|
#ifndef _PATH_CONSOLE
|
|
#define _PATH_CONSOLE "/dev/console"
|
|
#endif
|
|
|
|
#ifndef _PATH_TTY
|
|
#define _PATH_TTY "/dev/tty"
|
|
#endif
|
|
|
|
#ifndef _PATH_LOG
|
|
#define _PATH_LOG "/dev/log"
|
|
#endif
|
|
|
|
#ifndef _PATH_KLOG
|
|
#define _PATH_KLOG "/proc/kmsg"
|
|
#endif
|
|
|
|
#ifdef UT_NAMESIZE
|
|
#define UNAMESZ UT_NAMESIZE /* length of a login name */
|
|
#else
|
|
#define UNAMESZ 8 /* length of a login name */
|
|
#endif
|
|
#define MAXUNAMES 20 /* maximum number of user names */
|
|
#define MAXFNAME 200 /* max file pathname length */
|
|
|
|
#ifndef INET_SUSPEND_TIME
|
|
#define INET_SUSPEND_TIME 180 /* equal to 3 minutes */
|
|
#endif
|
|
|
|
#define LIST_DELIMITER ':' /* delimiter between two hosts */
|
|
|
|
#define AI_SECURE 0x8000 /* Tell socket_create() to not bind() */
|
|
|
|
#define O_CREATE O_WRONLY | O_APPEND | O_CREAT
|
|
|
|
/* From The Practice of Programming, by Kernighan and Pike */
|
|
#ifndef NELEMS
|
|
#define NELEMS(array) (sizeof(array) / sizeof(array[0]))
|
|
#endif
|
|
|
|
/* Stringification macros, see signal_init() for an example */
|
|
#define xstr(s) str(s)
|
|
#define str(s) #s
|
|
|
|
/* Helper internal log macros */
|
|
#define ERR(fmt, args...) flog(LOG_SYSLOG | LOG_ERR, fmt ": %m", ##args)
|
|
#define ERRX(fmt, args...) flog(LOG_SYSLOG | LOG_ERR, fmt, ##args)
|
|
#define WARN(fmt, args...) flog(LOG_SYSLOG | LOG_WARN, fmt, ##args)
|
|
#define NOTE(fmt, args...) flog(LOG_SYSLOG | LOG_NOTICE, fmt, ##args)
|
|
#define INFO(fmt, args...) flog(LOG_SYSLOG | LOG_INFO, fmt, ##args)
|
|
|
|
/*
|
|
* Help macros to convert between sockaddr types
|
|
*/
|
|
#define sstosa(ss) ((struct sockaddr *)(ss))
|
|
#define sstosin(ss) ((struct sockaddr_in *)(void *)(ss))
|
|
#define satosin(sa) ((struct sockaddr_in *)(void *)(sa))
|
|
#define sstosin6(ss) ((struct sockaddr_in6 *)(void *)(ss))
|
|
#define satosin6(sa) ((struct sockaddr_in6 *)(void *)(sa))
|
|
#ifndef s6_addr32
|
|
#define s6_addr32 __u6_addr.__u6_addr32
|
|
#endif
|
|
#define IN6_ARE_MASKED_ADDR_EQUAL(d, a, m) ( \
|
|
(((d)->s6_addr32[0] ^ (a)->s6_addr32[0]) & (m)->s6_addr32[0]) == 0 && \
|
|
(((d)->s6_addr32[1] ^ (a)->s6_addr32[1]) & (m)->s6_addr32[1]) == 0 && \
|
|
(((d)->s6_addr32[2] ^ (a)->s6_addr32[2]) & (m)->s6_addr32[2]) == 0 && \
|
|
(((d)->s6_addr32[3] ^ (a)->s6_addr32[3]) & (m)->s6_addr32[3]) == 0 )
|
|
|
|
/*
|
|
* klogctl(2) commands on Linux to control kernel logging to console.
|
|
*/
|
|
#define SYSLOG_ACTION_CONSOLE_OFF 6
|
|
#define SYSLOG_ACTION_CONSOLE_ON 7
|
|
|
|
#ifdef __linux__
|
|
#define kern_console_off() klogctl(SYSLOG_ACTION_CONSOLE_OFF, NULL, 0)
|
|
#define kern_console_on() klogctl(SYSLOG_ACTION_CONSOLE_ON, NULL, 0)
|
|
#else
|
|
#define kern_console_off() do { } while (0)
|
|
#define kern_console_on() do { } while (0)
|
|
#endif
|
|
|
|
/*
|
|
* Flags to logmsg().
|
|
*/
|
|
#define IGN_CONS 0x001 /* don't print on console */
|
|
#define SYNC_FILE 0x002 /* do fsync on file after printing */
|
|
#define ADDDATE 0x004 /* add a date to the message */
|
|
#define MARK 0x008 /* this message is a mark */
|
|
#define RFC3164 0x010 /* format log message according to RFC 3164 */
|
|
#define RFC5424 0x020 /* format log message according to RFC 5424 */
|
|
|
|
/* Syslog timestamp formats. */
|
|
#define BSDFMT_DATELEN 0
|
|
#define BSDFMT_DATEFMT NULL
|
|
|
|
#define RFC3164_DATELEN 15
|
|
#define RFC3164_DATEFMT "%b %e %H:%M:%S"
|
|
|
|
#define RFC5424_DATELEN 32
|
|
#define RFC5424_DATEFMT "%FT%T.______%z"
|
|
|
|
/*
|
|
* Helper macros for "message repeated" messages
|
|
*/
|
|
#define MAXREPEAT ((sizeof(repeatinterval) / sizeof(repeatinterval[0])) - 1)
|
|
#define REPEATTIME(f) ((f)->f_time + repeatinterval[(f)->f_repeatcount])
|
|
#define BACKOFF(f) \
|
|
if (++(f)->f_repeatcount > MAXREPEAT) \
|
|
(f)->f_repeatcount = MAXREPEAT;
|
|
|
|
/* values for f_type */
|
|
#define F_UNUSED 0 /* unused entry */
|
|
#define F_FILE 1 /* regular file */
|
|
#define F_TTY 2 /* terminal */
|
|
#define F_CONSOLE 3 /* console terminal */
|
|
#define F_FORW 4 /* remote machine */
|
|
#define F_USERS 5 /* list of users */
|
|
#define F_WALL 6 /* everyone logged on */
|
|
#define F_FORW_SUSP 7 /* suspended host forwarding */
|
|
#define F_FORW_UNKN 8 /* unknown host forwarding */
|
|
#define F_PIPE 9 /* named pipe */
|
|
|
|
/*
|
|
* Struct to hold records of peers and sockets
|
|
*/
|
|
struct peer {
|
|
SIMPLEQ_ENTRY(peer) pe_link;
|
|
const char *pe_name;
|
|
const char *pe_serv;
|
|
mode_t pe_mode;
|
|
int pe_sock[16];
|
|
size_t pe_socknum;
|
|
};
|
|
|
|
/*
|
|
* Struct to hold records of network addresses that are allowed to log
|
|
* to us.
|
|
*/
|
|
struct allowedpeer {
|
|
SIMPLEQ_ENTRY(allowedpeer) next;
|
|
int isnumeric;
|
|
u_short port;
|
|
union {
|
|
struct {
|
|
struct sockaddr_storage addr;
|
|
struct sockaddr_storage mask;
|
|
} numeric;
|
|
char *name;
|
|
} u;
|
|
#define a_addr u.numeric.addr
|
|
#define a_mask u.numeric.mask
|
|
#define a_name u.name
|
|
};
|
|
|
|
/* Timestamps of log entries. */
|
|
struct logtime {
|
|
struct tm tm;
|
|
suseconds_t usec;
|
|
};
|
|
|
|
/* message buffer container used for processing, formatting, and queueing */
|
|
struct buf_msg {
|
|
int pri;
|
|
char pribuf[8];
|
|
int flags;
|
|
struct logtime timestamp;
|
|
char timebuf[33];
|
|
char *recvhost;
|
|
char *hostname;
|
|
char *app_name;
|
|
char *proc_id;
|
|
char *msgid;
|
|
char *sd; /* structured data */
|
|
char *msg; /* message content */
|
|
};
|
|
|
|
/*
|
|
* This structure represents the files that will have log
|
|
* copies printed.
|
|
* We require f_file to be valid if f_type is F_FILE, F_CONSOLE, F_TTY
|
|
* or if f_type is F_PIPE and f_pid > 0.
|
|
*/
|
|
struct filed {
|
|
SIMPLEQ_ENTRY(filed) f_link;
|
|
|
|
short f_type; /* entry type, see below */
|
|
short f_file; /* file descriptor */
|
|
time_t f_time; /* time this was last written */
|
|
char *f_host; /* host from which to recd. */
|
|
u_char f_pmask[LOG_NFACILITIES + 1]; /* priority mask */
|
|
union {
|
|
char f_uname[MAXUNAMES][UNAMESZ + 1];
|
|
struct {
|
|
char f_hname[MAXHOSTNAMELEN + 1];
|
|
char f_serv[20];
|
|
struct addrinfo *f_addr;
|
|
} f_forw; /* forwarding address */
|
|
char f_fname[MAXFNAME];
|
|
} f_un;
|
|
char f_prevline[MAXSVLINE]; /* last message logged */
|
|
struct logtime f_lasttime; /* time of last occurrence */
|
|
char f_prevhost[MAXHOSTNAMELEN + 1]; /* host from which recd. */
|
|
int f_prevpri; /* pri of f_prevline */
|
|
size_t f_prevlen; /* length of f_prevline */
|
|
size_t f_prevcount; /* repetition cnt of prevline */
|
|
size_t f_repeatcount; /* number of "repeated" msgs */
|
|
int f_flags; /* store some additional flags */
|
|
int f_rotatecount;
|
|
int f_rotatesz;
|
|
};
|
|
|
|
void flog(int pri, char *fmt, ...);
|
|
|
|
#endif /* SYSKLOGD_SYSLOGD_H_ */
|