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#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <syslog.h>
#include <unistd.h>
#include <limits.h>
static char pwd[PATH_MAX];
typedef struct {
const char *const c_name;
int c_val;
} CODE;
CODE prioritynames[] = {
{ "alert", LOG_ALERT },
{ "crit", LOG_CRIT },
{ "debug", LOG_DEBUG },
{ "emerg", LOG_EMERG },
{ "err", LOG_ERR },
{ "error", LOG_ERR },
{ "info", LOG_INFO },
{ "notice", LOG_NOTICE },
{ "panic", LOG_EMERG },
{ "warn", LOG_WARNING },
{ "warning", LOG_WARNING },
{ 0, -1 }
};
CODE facilitynames[] = {
{ "auth", LOG_AUTH },
{ "authpriv", LOG_AUTHPRIV },
{ "cron", LOG_CRON },
{ "daemon", LOG_DAEMON },
{ "ftp", LOG_FTP },
{ "kern", LOG_KERN },
{ "lpr", LOG_LPR },
{ "mail", LOG_MAIL },
{ "news", LOG_NEWS },
{ "security", LOG_AUTH },
{ "syslog", LOG_SYSLOG },
{ "user", LOG_USER },
{ "uucp", LOG_UUCP },
{ "local0", LOG_LOCAL0 },
{ "local1", LOG_LOCAL1 },
{ "local2", LOG_LOCAL2 },
{ "local3", LOG_LOCAL3 },
{ "local4", LOG_LOCAL4 },
{ "local5", LOG_LOCAL5 },
{ "local6", LOG_LOCAL6 },
{ "local7", LOG_LOCAL7 },
{ 0, -1 }
};
static void
strpriority(char *s, int *facility, int *level)
{
char *p;
CODE *cp;
if ((p = strchr(s, '.'))) {
*p++ = 0;
for (cp = prioritynames; cp->c_name; cp++) {
if (strcmp(cp->c_name, p) == 0)
*level = cp->c_val;
}
}
if (*s)
for (cp = facilitynames; cp->c_name; cp++) {
if (strcmp(cp->c_name, s) == 0)
*facility = cp->c_val;
}
}
int
main(int argc, char *argv[])
{
char buf[1024];
char *p, *argv0;
char *tag = "vlogger";
int c;
int Sflag = 0;
int logflags = 0;
int facility = LOG_DAEMON;
int level = LOG_INFO;
argv0 = *argv;
if (strcmp(argv0, "./run") == 0) {
p = getcwd(pwd, sizeof (pwd));
if (p != NULL && *pwd == '/') {
if (*(p = pwd+(strlen(pwd)-1)) == '/')
*p = '\0';
if ((p = strrchr(pwd, '/')) && strncmp(p+1, "log", 3) == 0 &&
(*p = '\0', (p = strrchr(pwd, '/'))) && (*(p+1) != '\0')) {
tag = strdup(p+1);
}
}
}
while ((c = getopt(argc, argv, "f:ip:Sst:")) != -1)
switch (c) {
case 'f':
if (freopen(optarg, "r", stdin) == NULL) {
fprintf(stderr, "vlogger: %s: %s\n", optarg, strerror(errno));
return 1;
}
break;
case 'i': logflags |= LOG_PID; break;
case 'p': strpriority(optarg, &facility, &level); break;
case 'S': Sflag++; break;
case 's': logflags |= LOG_PERROR; break;
case 't': tag = optarg; break;
default:
fprintf(stderr, "usage: vlogger [-isS] [-f file] [-p pri] [-t tag] [message ...]\n");
exit(1);
}
argc -= optind;
argv += optind;
if (!Sflag && access("/etc/vlogger", X_OK) != -1) {
CODE *cp;
const char *sfacility, *slevel;
for (cp = prioritynames; cp->c_name; cp++) {
if (cp->c_val == level)
slevel = cp->c_name;
}
for (cp = facilitynames; cp->c_name; cp++) {
if (cp->c_val == facility)
sfacility = cp->c_name;
}
execl("/etc/vlogger", argv0, tag, slevel, sfacility, (char *)0);
fprintf(stderr, "vlogger: exec: %s\n", strerror(errno));
exit(1);
}
openlog(tag, logflags, facility);
if (argc > 0) {
size_t len;
char *p, *e;
p = buf;
*p = '\0';
e = buf + sizeof buf - 2;
for (; *argv;) {
len = strlen(*argv);
if (p + len > e && p > buf) {
syslog(level|facility, "%s", buf);
p = buf;
*p = '\0';
}
if (len > sizeof buf - 1) {
syslog(level|facility, "%s", *argv++);
} else {
if (p != buf) {
*p++ = ' ';
*p = '\0';
}
strncat(p, *argv++, e-p);
p += len;
}
}
if (p != buf)
syslog(level|facility, "%s", buf);
return 0;
}
while (fgets(buf, sizeof buf, stdin) != NULL)
syslog(level|facility, "%s", buf);
return 0;
}
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