sbase/logger.c

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1.9 KiB
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
decodefac(char *fac)
{
CODE *c;
int facility = -1;
for (c = facilitynames; c->c_name; c++)
if (!strcasecmp(fac, c->c_name))
facility = c->c_val;
if (facility == -1)
eprintf("invalid facility name: %s\n", fac);
return facility & LOG_FACMASK;
}
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static int
decodelev(char *lev)
{
CODE *c;
int level = -1;
for (c = prioritynames; c->c_name; c++)
if (!strcasecmp(lev, c->c_name))
level = c->c_val;
if (level == -1)
eprintf("invalid level name: %s\n", lev);
return level & LOG_PRIMASK;
}
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static int
decodepri(char *pri)
{
char *p;
if (!(p = strchr(pri, '.')))
eprintf("invalid priority name: %s\n", pri);
*p++ = '\0';
if (!*p)
eprintf("invalid priority name: %s\n", pri);
return decodefac(pri) | decodelev(p);
}
static void
usage(void)
{
eprintf("usage: %s [-is] [-p priority] [-t tag] [message ...]\n", argv0);
}
int
main(int argc, char *argv[])
{
char *buf = NULL, *tag = NULL;
size_t sz = 0;
int logflags = 0, priority = LOG_NOTICE;
int i;
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 == 0) {
while(getline(&buf, &sz, stdin) != -1)
syslog(priority, "%s", buf);
if (ferror(stdin))
eprintf("%s: read error:", "<stdin>");
} else {
for (i = 0; i < argc; i++)
sz += strlen(argv[i]);
sz += argc;
buf = ecalloc(1, sz);
for (i = 0; i < argc; i++) {
strlcat(buf, argv[i], sz);
if (i + 1 < argc)
strlcat(buf, " ", sz);
}
syslog(priority, "%s", buf);
}
free(buf);
closelog();
return 0;
}