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
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
|
/*
* Mini logger implementation for busybox
*
* Copyright (C) 1999 by Lineo, inc.
* Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include "internal.h"
#include <stdio.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <unistd.h>
#include <time.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <signal.h>
#include <ctype.h>
#include <netdb.h>
#if !defined BB_SYSLOGD
#define SYSLOG_NAMES
#include <sys/syslog.h>
#else
/* We have to do this since the header file defines static
* structues. Argh.... bad libc, bad, bad...
*/
#include <sys/syslog.h>
typedef struct _code {
char *c_name;
int c_val;
} CODE;
extern CODE prioritynames[];
extern CODE facilitynames[];
#endif
static const char logger_usage[] =
"logger [OPTION]... [MESSAGE]\n\n"
"Write MESSAGE to the system log. If MESSAGE is '-', log stdin.\n\n"
"Options:\n"
"\t-s\tLog to stderr as well as the system log.\n"
"\t-p\tEnter the message with the specified priority.\n"
"\t\tThis may be numerical or a ``facility.level'' pair.\n";
/* Decode a symbolic name to a numeric value
* this function is based on code
* Copyright (c) 1983, 1993
* The Regents of the University of California. All rights reserved.
*/
static int
decode(char* name, CODE* codetab)
{
CODE *c;
if (isdigit(*name))
return (atoi(name));
for (c = codetab; c->c_name; c++) {
if (!strcasecmp(name, c->c_name)) {
return (c->c_val);
}
}
return (-1);
}
/* Decode a symbolic name to a numeric value
* this function is based on code
* Copyright (c) 1983, 1993
* The Regents of the University of California. All rights reserved.
*/
static int
pencode(char* s)
{
char *save;
int lev, fac=LOG_USER;
for (save = s; *s && *s != '.'; ++s);
if (*s) {
*s = '\0';
fac = decode(save, facilitynames);
if (fac < 0) {
fprintf(stderr, "unknown facility name: %s\n", save);
exit( FALSE);
}
*s++ = '.';
}
else {
s = save;
}
lev = decode(s, prioritynames);
if (lev < 0) {
fprintf(stderr, "unknown priority name: %s\n", save);
exit( FALSE);
}
return ((lev & LOG_PRIMASK) | (fac & LOG_FACMASK));
}
extern int logger_main(int argc, char **argv)
{
struct sockaddr_un sunx;
int fd, pri = LOG_USER|LOG_NOTICE;
int fromStdinFlag=FALSE;
int toStdErrFlag=FALSE;
int stopLookingAtMeLikeThat=FALSE;
char *message, buf[1024], buf1[1024];
time_t now;
size_t addrLength;
/* Parse any options */
while (--argc > 0 && **(++argv) == '-') {
if (*((*argv)+1) == '\0') {
fromStdinFlag=TRUE;
}
stopLookingAtMeLikeThat=FALSE;
while (*(++(*argv)) && stopLookingAtMeLikeThat==FALSE) {
switch (**argv) {
case 's':
toStdErrFlag = TRUE;
break;
case 'p':
if (--argc == 0) {
usage(logger_usage);
}
pri = pencode(*(++argv));
stopLookingAtMeLikeThat=TRUE;
break;
default:
usage(logger_usage);
}
}
}
if (fromStdinFlag==TRUE) {
/* read from stdin */
int c, i=0;
while ((c = getc(stdin)) != EOF && i<sizeof(buf1)) {
buf1[i++]=c;
}
message=buf1;
} else {
if (argc>=1) {
message=*argv;
} else {
fprintf(stderr, "No message\n");
exit( FALSE);
}
}
memset(&sunx, 0, sizeof(sunx));
sunx.sun_family = AF_UNIX; /* Unix domain socket */
strncpy(sunx.sun_path, _PATH_LOG, sizeof(sunx.sun_path));
if ((fd = socket(PF_UNIX, SOCK_STREAM, 0)) < 0 ) {
perror("Couldn't obtain descriptor for socket " _PATH_LOG);
exit( FALSE);
}
addrLength = sizeof(sunx.sun_family) + strlen(sunx.sun_path);
if (connect(fd, (struct sockaddr *) &sunx, addrLength)) {
perror("Could not connect to socket " _PATH_LOG);
exit( FALSE);
}
time(&now);
snprintf (buf, sizeof(buf), "<%d>%.15s %s", pri, ctime(&now)+4, message);
if (toStdErrFlag==TRUE)
fprintf(stderr, "%s\n", buf);
write( fd, buf, sizeof(buf));
close(fd);
exit( TRUE);
}
|
