297 lines
7.2 KiB
C
297 lines
7.2 KiB
C
/*
|
|
* Copyright (c) 1983, 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.
|
|
* 4. 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 lint
|
|
static const char copyright[] =
|
|
"@(#) Copyright (c) 1983, 1993\n\
|
|
The Regents of the University of California. All rights reserved.\n";
|
|
#endif /* not lint */
|
|
|
|
#if 0
|
|
#ifndef lint
|
|
static char sccsid[] = "@(#)logger.c 8.1 (Berkeley) 6/6/93";
|
|
#endif /* not lint */
|
|
#endif
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/socket.h>
|
|
#include <netinet/in.h>
|
|
|
|
#include <ctype.h>
|
|
#include <err.h>
|
|
#include <netdb.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
#define SYSLOG_NAMES
|
|
#include <syslog.h>
|
|
|
|
static int decode(char *, const CODE *);
|
|
static int pencode(char *);
|
|
static void logmessage(int, const char *, const char *, const char *,
|
|
const char *);
|
|
static void usage(void);
|
|
|
|
struct socks {
|
|
int sock;
|
|
int addrlen;
|
|
struct sockaddr_storage addr;
|
|
};
|
|
|
|
#ifdef INET6
|
|
static int family = PF_UNSPEC; /* protocol family (IPv4, IPv6 or both) */
|
|
#else
|
|
static int family = PF_INET; /* protocol family (IPv4 only) */
|
|
#endif
|
|
static int send_to_all = 0; /* send message to all IPv4/IPv6 addresses */
|
|
|
|
/*
|
|
* logger -- read and log utility
|
|
*
|
|
* Reads from an input and arranges to write the result on the system
|
|
* log.
|
|
*/
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
int ch, logflags, pri;
|
|
char *tag, *host, buf[1024];
|
|
const char *svcname;
|
|
|
|
tag = NULL;
|
|
host = NULL;
|
|
svcname = "syslog";
|
|
pri = LOG_USER | LOG_NOTICE;
|
|
logflags = 0;
|
|
unsetenv("TZ");
|
|
while ((ch = getopt(argc, argv, "46Af:h:iP:p:st:")) != -1)
|
|
switch((char)ch) {
|
|
case '4':
|
|
family = PF_INET;
|
|
break;
|
|
#ifdef INET6
|
|
case '6':
|
|
family = PF_INET6;
|
|
break;
|
|
#endif
|
|
case 'A':
|
|
send_to_all++;
|
|
break;
|
|
case 'f': /* file to log */
|
|
if (freopen(optarg, "r", stdin) == NULL)
|
|
err(1, "%s", optarg);
|
|
setvbuf(stdin, 0, _IONBF, 0);
|
|
break;
|
|
case 'h': /* hostname to deliver to */
|
|
host = optarg;
|
|
break;
|
|
case 'i': /* log process id also */
|
|
logflags |= LOG_PID;
|
|
break;
|
|
case 'P': /* service name or port number */
|
|
svcname = optarg;
|
|
break;
|
|
case 'p': /* priority */
|
|
pri = pencode(optarg);
|
|
break;
|
|
case 's': /* log to standard error */
|
|
logflags |= LOG_PERROR;
|
|
break;
|
|
case 't': /* tag */
|
|
tag = optarg;
|
|
break;
|
|
case '?':
|
|
default:
|
|
usage();
|
|
}
|
|
argc -= optind;
|
|
argv += optind;
|
|
|
|
if (tag == NULL)
|
|
tag = getlogin();
|
|
/* setup for logging */
|
|
if (host == NULL)
|
|
openlog(tag, logflags, 0);
|
|
(void) fclose(stdout);
|
|
|
|
/* log input line if appropriate */
|
|
if (argc > 0) {
|
|
char *p, *endp;
|
|
size_t len;
|
|
|
|
for (p = buf, endp = buf + sizeof(buf) - 2; *argv;) {
|
|
len = strlen(*argv);
|
|
if (p + len > endp && p > buf) {
|
|
logmessage(pri, tag, host, svcname, buf);
|
|
p = buf;
|
|
}
|
|
if (len > sizeof(buf) - 1)
|
|
logmessage(pri, tag, host, svcname, *argv++);
|
|
else {
|
|
if (p != buf)
|
|
*p++ = ' ';
|
|
bcopy(*argv++, p, len);
|
|
*(p += len) = '\0';
|
|
}
|
|
}
|
|
if (p != buf)
|
|
logmessage(pri, tag, host, svcname, buf);
|
|
} else
|
|
while (fgets(buf, sizeof(buf), stdin) != NULL)
|
|
logmessage(pri, tag, host, svcname, buf);
|
|
exit(0);
|
|
}
|
|
|
|
/*
|
|
* Send the message to syslog, either on the local host, or on a remote host
|
|
*/
|
|
static void
|
|
logmessage(int pri, const char *tag, const char *host, const char *svcname,
|
|
const char *buf)
|
|
{
|
|
static struct socks *socks;
|
|
static int nsock = 0;
|
|
struct addrinfo hints, *res, *r;
|
|
char *line;
|
|
int maxs, len, sock, error, i, lsent;
|
|
|
|
if (host == NULL) {
|
|
syslog(pri, "%s", buf);
|
|
return;
|
|
}
|
|
|
|
if (nsock <= 0) { /* set up socket stuff */
|
|
/* resolve hostname */
|
|
memset(&hints, 0, sizeof(hints));
|
|
hints.ai_family = family;
|
|
hints.ai_socktype = SOCK_DGRAM;
|
|
error = getaddrinfo(host, svcname, &hints, &res);
|
|
if (error == EAI_SERVICE) {
|
|
warnx("%s/udp: unknown service", svcname);
|
|
error = getaddrinfo(host, "514", &hints, &res);
|
|
}
|
|
if (error)
|
|
errx(1, "%s: %s", gai_strerror(error), host);
|
|
/* count max number of sockets we may open */
|
|
for (maxs = 0, r = res; r; r = r->ai_next, maxs++);
|
|
socks = malloc(maxs * sizeof(struct socks));
|
|
if (!socks)
|
|
errx(1, "couldn't allocate memory for sockets");
|
|
for (r = res; r; r = r->ai_next) {
|
|
sock = socket(r->ai_family, r->ai_socktype,
|
|
r->ai_protocol);
|
|
if (sock < 0)
|
|
continue;
|
|
memcpy(&socks[nsock].addr, r->ai_addr, r->ai_addrlen);
|
|
socks[nsock].addrlen = r->ai_addrlen;
|
|
socks[nsock++].sock = sock;
|
|
}
|
|
freeaddrinfo(res);
|
|
if (nsock <= 0)
|
|
errx(1, "socket");
|
|
}
|
|
|
|
if ((len = asprintf(&line, "<%d>%s: %s", pri, tag, buf)) == -1)
|
|
errx(1, "asprintf");
|
|
|
|
lsent = -1;
|
|
for (i = 0; i < nsock; ++i) {
|
|
lsent = sendto(socks[i].sock, line, len, 0,
|
|
(struct sockaddr *)&socks[i].addr,
|
|
socks[i].addrlen);
|
|
if (lsent == len && !send_to_all)
|
|
break;
|
|
}
|
|
if (lsent != len) {
|
|
if (lsent == -1)
|
|
warn ("sendto");
|
|
else
|
|
warnx ("sendto: short send - %d bytes", lsent);
|
|
}
|
|
|
|
free(line);
|
|
}
|
|
|
|
/*
|
|
* Decode a symbolic name to a numeric value
|
|
*/
|
|
static int
|
|
pencode(char *s)
|
|
{
|
|
char *save;
|
|
int fac, lev;
|
|
|
|
for (save = s; *s && *s != '.'; ++s);
|
|
if (*s) {
|
|
*s = '\0';
|
|
fac = decode(save, facilitynames);
|
|
if (fac < 0)
|
|
errx(1, "unknown facility name: %s", save);
|
|
*s++ = '.';
|
|
}
|
|
else {
|
|
fac = 0;
|
|
s = save;
|
|
}
|
|
lev = decode(s, prioritynames);
|
|
if (lev < 0)
|
|
errx(1, "unknown priority name: %s", save);
|
|
return ((lev & LOG_PRIMASK) | (fac & LOG_FACMASK));
|
|
}
|
|
|
|
static int
|
|
decode(char *name, const CODE *codetab)
|
|
{
|
|
const CODE *c;
|
|
|
|
if (isdigit(*name))
|
|
return (atoi(name));
|
|
|
|
for (c = codetab; c->c_name; c++)
|
|
if (!strcasecmp(name, c->c_name))
|
|
return (c->c_val);
|
|
|
|
return (-1);
|
|
}
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
(void)fprintf(stderr, "usage: %s\n",
|
|
"logger [-46Ais] [-f file] [-h host] [-P port] [-p pri] [-t tag]\n"
|
|
" [message ...]"
|
|
);
|
|
exit(1);
|
|
}
|