1 /* logger.c - Log messages.
2 *
3 * Copyright 2013 Ilya Kuzmich <ilya.kuzmich@gmail.com>
4 *
5 * See http://pubs.opengroup.org/onlinepubs/9699919799/utilities/logger.html
6
7 USE_LOGGER(NEWTOY(logger, "st:p:", TOYFLAG_USR|TOYFLAG_BIN))
8
9 config LOGGER
10 bool "logger"
11 depends on SYSLOGD
12 default n
13 help
14 usage: logger [-s] [-t tag] [-p [facility.]priority] [message]
15
16 Log message (or stdin) to syslog.
17 */
18
19 #define FOR_logger
20 #include "toys.h"
21
22 GLOBALS(
23 char *priority_arg;
24 char *ident;
25 )
26
27 extern int logger_lookup(int where, char *key);
28
logger_main(void)29 void logger_main(void)
30 {
31 int facility = LOG_USER, priority = LOG_NOTICE;
32 char *message = NULL;
33
34 if (toys.optflags & FLAG_p) {
35 char *sep = strchr(TT.priority_arg, '.');
36
37 if (sep) {
38 *sep = '\0';
39 if ((facility = logger_lookup(0, TT.priority_arg)) == -1)
40 error_exit("bad facility: %s", TT.priority_arg);
41 TT.priority_arg = sep+1;
42 }
43
44 if ((priority = logger_lookup(1, TT.priority_arg)) == -1)
45 error_exit("bad priority: %s", TT.priority_arg);
46 }
47
48 if (!(toys.optflags & FLAG_t)) {
49 struct passwd *pw = getpwuid(geteuid());
50
51 if (!pw) perror_exit("getpwuid");
52 TT.ident = xstrdup(pw->pw_name);
53 }
54
55 if (toys.optc) {
56 int length = 0, pos = 0;
57
58 for (;*toys.optargs; toys.optargs++) {
59 length += strlen(*(toys.optargs)) + 1; // plus one for the args spacing
60 message = xrealloc(message, length + 1); // another one for the null byte
61
62 sprintf(message + pos, "%s ", *toys.optargs);
63 pos = length;
64 }
65 } else {
66 toybuf[readall(0, toybuf, 4096-1)] = '\0';
67 message = toybuf;
68 }
69
70 openlog(TT.ident, (toys.optflags & FLAG_s ? LOG_PERROR : 0) , facility);
71 syslog(priority, "%s", message);
72 closelog();
73 }
74