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
|
/* ulogd_LOGEMU.c, Version $Revision$
*
* ulogd output target for syslog logging emulation
*
* This target produces a file which looks the same like the syslog-entries
* of the LOG target.
*
* (C) 2000-2005 by Harald Welte <laforge@gnumonks.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation
*
* 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
*
* $Id$
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <ulogd/ulogd.h>
#include <ulogd/conffile.h>
#include <ulogd/printpkt.h>
#ifndef ULOGD_LOGEMU_DEFAULT
#define ULOGD_LOGEMU_DEFAULT "/var/log/ulogd.syslogemu"
#endif
#ifndef ULOGD_LOGEMU_SYNC_DEFAULT
#define ULOGD_LOGEMU_SYNC_DEFAULT 0
#endif
static struct config_keyset logemu_kset = {
.num_ces = 2,
.ces = {
{
.key = "file",
.type = CONFIG_TYPE_STRING,
.options = CONFIG_OPT_NONE,
.u = { .string = ULOGD_LOGEMU_DEFAULT },
},
{
.key = "sync",
.type = CONFIG_TYPE_INT,
.options = CONFIG_OPT_NONE,
.u = { .value = ULOGD_LOGEMU_SYNC_DEFAULT },
},
},
};
struct logemu_instance {
FILE *of;
};
static int _output_logemu(struct ulogd_pluginstance *upi)
{
struct logemu_instance *li = (struct logemu_instance *) &upi->private;
struct ulogd_key *res = upi->input.keys;
static char buf[4096];
printpkt_print(res, buf, 1);
fprintf(li->of, "%s", buf);
if (upi->config_kset->ces[1].u.value)
fflush(li->of);
return 0;
}
static void signal_handler_logemu(struct ulogd_pluginstance *pi, int signal)
{
struct logemu_instance *li = (struct logemu_instance *) &pi->private;
switch (signal) {
case SIGHUP:
ulogd_log(ULOGD_NOTICE, "syslogemu: reopening logfile\n");
fclose(li->of);
li->of = fopen(pi->config_kset->ces[0].u.string, "a");
if (!li->of) {
ulogd_log(ULOGD_ERROR, "can't reopen syslogemu: %s\n",
strerror(errno));
}
break;
default:
break;
}
}
static int start_logemu(struct ulogd_pluginstance *pi)
{
struct logemu_instance *li = (struct logemu_instance *) &pi->private;
ulogd_log(ULOGD_DEBUG, "starting logemu\n");
#ifdef DEBUG_LOGEMU
li->of = stdout;
#else
ulogd_log(ULOGD_DEBUG, "opening file: %s\n",
pi->config_kset->ces[0].u.string);
li->of = fopen(pi->config_kset->ces[0].u.string, "a");
if (!li->of) {
ulogd_log(ULOGD_FATAL, "can't open syslogemu: %s\n",
strerror(errno));
return errno;
}
#endif
if (printpkt_init()) {
ulogd_log(ULOGD_ERROR, "can't resolve all keyhash id's\n");
return -EINVAL;
}
return 0;
}
static int fini_logemu(struct ulogd_pluginstance *pi) {
struct logemu_instance *li = (struct logemu_instance *) &pi->private;
if (li->of != stdout)
fclose(li->of);
return 0;
}
static int configure_logemu(struct ulogd_pluginstance *pi,
struct ulogd_pluginstance_stack *stack)
{
/* FIXME: error handling */
ulogd_log(ULOGD_DEBUG, "parsing config file section %s\n", pi->id);
config_parse_file(pi->id, pi->config_kset);
return 0;
}
static struct ulogd_plugin logemu_plugin = {
.name = "LOGEMU",
.input = {
.keys = printpkt_keys,
.num_keys = ARRAY_SIZE(printpkt_keys),
.type = ULOGD_DTYPE_PACKET,
},
.output = {
.type = ULOGD_DTYPE_SINK,
},
.config_kset = &logemu_kset,
.priv_size = sizeof(struct logemu_instance),
.configure = &configure_logemu,
.start = &start_logemu,
.stop = &fini_logemu,
.interp = &_output_logemu,
.signal = &signal_handler_logemu,
.version = ULOGD_VERSION,
};
void __attribute__ ((constructor)) init(void);
void init(void)
{
ulogd_register_plugin(&logemu_plugin);
}
|
