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/* logger.c - Log messages.
*
* Copyright 2013 Ilya Kuzmich <ilya.kuzmich@gmail.com>
*
* See http://pubs.opengroup.org/onlinepubs/9699919799/utilities/logger.html
USE_LOGGER(NEWTOY(logger, "st:p:", TOYFLAG_USR|TOYFLAG_BIN))
config LOGGER
bool "logger"
default n
help
usage: hello [-s] [-t tag] [-p [facility.]priority] [message]
Log message (or stdin) to syslog.
*/
#define FOR_logger
#include "toys.h"
#include <syslog.h>
GLOBALS(
char *priority_arg;
char *ident;
)
struct mapping {
char *key;
int value;
};
static struct mapping facilities[] = {
{"user", LOG_USER}, {"main", LOG_MAIL}, {"news", LOG_NEWS},
{"uucp", LOG_UUCP}, {"daemon", LOG_DAEMON}, {"auth", LOG_AUTH},
{"cron", LOG_CRON}, {"lpr", LOG_LPR}, {"local0", LOG_LOCAL0},
{"local1", LOG_LOCAL1}, {"local2", LOG_LOCAL2}, {"local3", LOG_LOCAL3},
{"local4", LOG_LOCAL4}, {"local5", LOG_LOCAL5}, {"local6", LOG_LOCAL6},
{"local7", LOG_LOCAL7},
{NULL, 0}
};
static struct mapping priorities[] = {
{"emerg", LOG_EMERG}, {"alert", LOG_ALERT}, {"crit", LOG_CRIT},
{"err", LOG_ERR}, {"warning", LOG_WARNING}, {"notice", LOG_NOTICE},
{"info", LOG_INFO}, {"debug", LOG_DEBUG},
{NULL, 0}
};
static int lookup(struct mapping *where, char *key)
{
for (; where->key; where++)
if (!strcasecmp(key, where->key)) return where->value;
return -1;
}
void logger_main(void)
{
int facility = LOG_USER, priority = LOG_NOTICE;
char *message = NULL;
if (toys.optflags & FLAG_p) {
char *sep = strchr(TT.priority_arg, '.');
if (sep) {
*sep = '\0';
if ((facility = lookup(facilities, TT.priority_arg)) == -1)
error_exit("bad facility: %s", TT.priority_arg);
TT.priority_arg = sep+1;
}
if ((priority = lookup(priorities, TT.priority_arg)) == -1)
error_exit("bad priority: %s", TT.priority_arg);
}
if (!(toys.optflags & FLAG_t)) {
struct passwd *pw = getpwuid(geteuid());
if (!pw) perror_exit("getpwuid");
TT.ident = xstrdup(pw->pw_name);
}
if (toys.optc) {
int length = 0, pos = 0;
for (;*toys.optargs; toys.optargs++) {
length += strlen(*(toys.optargs)) + 1; // plus one for the args spacing
message = xrealloc(message, length + 1); // another one for the null byte
sprintf(message + pos, "%s ", *toys.optargs);
pos = length;
}
} else {
toybuf[readall(0, toybuf, 4096-1)] = '\0';
message = toybuf;
}
openlog(TT.ident, (toys.optflags & FLAG_s ? LOG_PERROR : 0) , facility);
syslog(priority, "%s", message);
closelog();
}
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