1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
|
/* 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>
#include <strings.h>
#include <string.h>
GLOBALS(
char *priority_arg;
char *ident;
int facility;
int priority;
)
struct mapping {
const char *key;
int value;
};
static const 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 const 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(const struct mapping *where, const char *key)
{
int i;
for (i = 0; where[i].key; i++)
if (!strcasecmp(key, where[i].key))
return where[i].value;
return -1;
}
static void parse_priority()
{
char *sep = strchr(TT.priority_arg, '.');
if (sep)
{
*sep = '\0';
if ((TT.facility = lookup(facilities, TT.priority_arg)) == -1)
error_exit("bad facility: %s", TT.priority_arg);
TT.priority_arg = sep+1;
}
if ((TT.priority = lookup(priorities, TT.priority_arg)) == -1)
error_exit("bad priority: %s", TT.priority_arg);
}
void logger_main(void)
{
if (toys.optflags & FLAG_p)
parse_priority();
else
{
TT.facility = LOG_USER;
TT.priority = LOG_NOTICE;
}
if (!(toys.optflags & FLAG_t))
{
struct passwd *pw = getpwuid(geteuid());
if (!pw)
perror_exit("getpwuid");
TT.ident = xstrdup(pw->pw_name);
}
char *message = NULL;
if (toys.optc) {
int length = 0;
int pos = 0;
for (;*toys.optargs; (void) *(toys.optargs)++) // shut up gcc
{
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) , TT.facility);
syslog(TT.priority, "%s", message);
closelog();
}
|
