sbase/logger.c

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C
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/* See LICENSE file for copyright and license details. */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#define SYSLOG_NAMES
#include <syslog.h>
#include <unistd.h>
#include "util.h"
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static int
decodetable(CODE *table, char *name)
{
CODE *c;
for (c = table; c->c_name; c++)
if (!strcasecmp(name, c->c_name))
return c->c_val;
eprintf("invalid priority name: %s\n", name);
return -1; /* not reached */
}
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static int
decodepri(char *pri)
{
char *lev, *fac = pri;
if (!(lev = strchr(pri, '.')))
eprintf("invalid priority name: %s\n", pri);
*lev++ = '\0';
if (!*lev)
eprintf("invalid priority name: %s\n", pri);
return (decodetable(facilitynames, fac) & LOG_FACMASK) |
(decodetable(prioritynames, lev) & LOG_PRIMASK);
}
static void
usage(void)
{
eprintf("usage: %s [-is] [-p priority] [-t tag] [message ...]\n", argv0);
}
int
main(int argc, char *argv[])
{
size_t sz;
int logflags = 0, priority = LOG_NOTICE, i;
char *buf = NULL, *tag = NULL;
ARGBEGIN {
case 'i':
logflags |= LOG_PID;
break;
case 'p':
priority = decodepri(EARGF(usage()));
break;
case 's':
logflags |= LOG_PERROR;
break;
case 't':
tag = EARGF(usage());
break;
default:
usage();
} ARGEND;
openlog(tag ? tag : getlogin(), logflags, 0);
if (!argc) {
while (getline(&buf, &sz, stdin) > 0)
syslog(priority, "%s", buf);
if (ferror(stdin))
eprintf("getline %s:", "<stdin>");
} else {
for (i = 0, sz = 0; i < argc; i++)
sz += strlen(argv[i]);
sz += argc;
buf = ecalloc(1, sz);
for (i = 0; i < argc; i++) {
estrlcat(buf, argv[i], sz);
if (i + 1 < argc)
estrlcat(buf, " ", sz);
}
syslog(priority, "%s", buf);
}
closelog();
return 0;
}