home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
The World of Computer Software
/
World_Of_Computer_Software-02-385-Vol-1of3.iso
/
x
/
xntp3.zip
/
gizmo
/
gizmo_syslog.c
< prev
next >
Wrap
C/C++ Source or Header
|
1989-09-18
|
4KB
|
196 lines
/*
* Copyright (c) 1983 Regents of the University of California.
* All rights reserved. The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*/
/*
* SYSLOG -- print message on log file
*
* This routine looks a lot like printf, except that it
* outputs to the log file instead of the standard output.
* Also:
* adds a timestamp,
* prints the module name in front of the message,
* has some other formatting types (or will sometime),
* adds a newline on the end of the message.
*
* The output of this routine is intended to be read by /etc/syslogd.
*
* Author: Eric Allman
* Modified to use UNIX domain IPC by Ralph Campbell
*/
#include <stdio.h>
#include <strings.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/file.h>
#include <sys/time.h>
#include <netinet/in.h>
#include "gizmo_syslog.h"
/*
* Port number for syslogd. For use by the gizmo's internal syslog
* routines.
*/
#define IPPORT_SYSLOG 514
#define MAXLINE 1024 /* max message size */
#define PRIMASK(p) (1 << ((p) & LOG_PRIMASK))
#define PRIFAC(p) (((p) & LOG_FACMASK) >> 3)
#define IMPORTANT LOG_ERR
static int LogFile = -1; /* fd for log */
static int LogStat = 0; /* status bits, set by openlog() */
static char *LogTag = "syslog"; /* string to tag the entry with */
static int LogMask = 0xff; /* mask of priorities to be logged */
static int LogFacility = LOG_USER; /* default facility code */
static int LogOpenCalled = 0; /* set to 1 when we should be open */
static struct sockaddr_in SyslogAddr; /* AF_INET address of local logger */
extern int errno, sys_nerr;
extern char *sys_errlist[];
syslog(pri, fmt, p0, p1, p2, p3, p4)
int pri;
char *fmt;
{
char buf[MAXLINE + 1], outline[MAXLINE + 1];
register char *b, *f, *o;
register int c;
char *termline;
struct timeval tv;
int olderrno = errno;
/* see if we should just throw out this message */
if (pri <= 0 || PRIFAC(pri) >= LOG_NFACILITIES
|| (PRIMASK(pri) & LogMask) == 0)
return;
if (LogFile < 0)
openlog(LogTag, LogStat | LOG_NDELAY, 0);
/* set default facility if none specified */
if ((pri & LOG_FACMASK) == 0)
pri |= LogFacility;
/* build the message */
o = outline;
sprintf(o, "<%d>", pri);
o += strlen(o);
termline = o;
gettimeofday(&tv, (struct timezone *)0);
sprintf(o, "%.15s ", ctime(&tv.tv_sec) + 4);
o += strlen(o);
if (LogTag) {
strcpy(o, LogTag);
o += strlen(o);
}
#ifdef notdef
if (LogStat & LOG_PID) {
sprintf(o, "[%d]", getpid());
o += strlen(o);
}
#endif
if (LogTag) {
strcpy(o, ": ");
o += 2;
}
b = buf;
f = fmt;
while ((c = *f++) != '\0' && c != '\n' && b < &buf[MAXLINE]) {
if (c != '%') {
*b++ = c;
continue;
}
if ((c = *f++) != 'm') {
*b++ = '%';
*b++ = c;
continue;
}
if ((unsigned)olderrno > sys_nerr)
sprintf(b, "error %d", olderrno);
else
strcpy(b, sys_errlist[olderrno]);
b += strlen(b);
}
*b++ = '\n';
*b = '\0';
sprintf(o, buf, p0, p1, p2, p3, p4);
c = strlen(outline);
if (c > MAXLINE)
c = MAXLINE;
/* output the message to the local logger */
if (SyslogAddr.sin_addr.s_addr != INADDR_ANY &&
sendto(LogFile, outline, c, 0, &SyslogAddr, sizeof SyslogAddr) >= 0)
return;
#ifdef notdef
if (!(LogStat & LOG_CONS))
return;
#endif
(void) write(2, termline, strlen(termline));
}
/*
* OPENLOG -- open system log
*/
openlog(ident, logstat, logfac)
char *ident;
int logstat, logfac;
{
if (ident != NULL)
LogTag = ident;
LogStat = logstat;
if (logfac != 0)
LogFacility = logfac & LOG_FACMASK;
if (LogFile >= 0)
return;
if (LogStat & LOG_NDELAY) {
LogFile = socket(AF_UNIX, SOCK_DGRAM, 0);
fcntl(LogFile, F_SETFD, 1);
}
}
/*
* CLOSELOG -- close the system log
*/
closelog()
{
(void) close(LogFile);
LogFile = -1;
}
/*
* SETLOGMASK -- set the log mask level
*/
setlogmask(pmask)
int pmask;
{
int omask;
omask = LogMask;
if (pmask != 0)
LogMask = pmask;
return (omask);
}
/*
* setloghost - set the address of the host to log to
*/
setloghost(addr)
struct sockaddr_in *addr;
{
bzero(&SyslogAddr, sizeof SyslogAddr);
SyslogAddr.sin_family = AF_INET;
SyslogAddr.sin_port = htons(IPPORT_SYSLOG);
SyslogAddr.sin_addr = addr->sin_addr;
}