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
|
/*
* Copyright (c) 1998-2004 Hannes Gredler <hannes@tcpdump.org>
* The TCPDUMP project
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that: (1) source code
* distributions retain the above copyright notice and this paragraph
* in its entirety, and (2) distributions including binary code include
* the above copyright notice and this paragraph in its entirety in
* the documentation or other materials provided with the distribution.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND
* WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT
* LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE.
*/
#ifndef lint
static const char rcsid[] _U_ =
"@(#) $Header: /tcpdump/master/tcpdump/print-syslog.c,v 1.1 2004/10/29 11:42:53 hannes Exp $";
#endif
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <tcpdump-stdinc.h>
#include <stdio.h>
#include <stdlib.h>
#include "interface.h"
#include "extract.h"
#include "addrtoname.h"
/*
* tokenlists and #defines taken from Ethereal - Network traffic analyzer
* by Gerald Combs <gerald@ethereal.com>
*/
#define SYSLOG_SEVERITY_MASK 0x0007 /* 0000 0000 0000 0111 */
#define SYSLOG_FACILITY_MASK 0x03f8 /* 0000 0011 1111 1000 */
#define SYSLOG_MAX_DIGITS 3 /* The maximum number if priority digits to read in. */
static const struct tok syslog_severity_values[] = {
{ 0, "emergency" },
{ 1, "alert" },
{ 2, "critical" },
{ 3, "error" },
{ 4, "warning" },
{ 5, "notice" },
{ 6, "info" },
{ 7, "debug" },
{ 0, NULL },
};
static const struct tok syslog_facility_values[] = {
{ 0, "kernel" },
{ 1, "user" },
{ 2, "mail" },
{ 3, "daemon" },
{ 4, "auth" },
{ 5, "syslog" },
{ 6, "lpr" },
{ 7, "news" },
{ 8, "uucp" },
{ 9, "cron" },
{ 10, "authpriv" },
{ 11, "ftp" },
{ 12, "ntp" },
{ 13, "security" },
{ 14, "console" },
{ 15, "cron" },
{ 16, "local0" },
{ 17, "local1" },
{ 18, "local2" },
{ 19, "local3" },
{ 20, "local4" },
{ 21, "local5" },
{ 22, "local6" },
{ 23, "local7" },
{ 0, NULL },
};
void
syslog_print(register const u_char *pptr, register u_int len)
{
u_int16_t msg_off = 0;
u_int16_t pri = 0;
u_int16_t facility,severity;
/* extract decimal figures that are
* encapsulated within < > tags
* based on this decimal figure extract the
* severity and facility values
*/
if (!TTEST2(*pptr, 1))
goto trunc;
if (*(pptr+msg_off) == '<') {
msg_off++;
if (!TTEST2(*(pptr+msg_off), 1))
goto trunc;
while ( *(pptr+msg_off) >= '0' &&
*(pptr+msg_off) <= '9' &&
msg_off <= SYSLOG_MAX_DIGITS) {
if (!TTEST2(*(pptr+msg_off), 1))
goto trunc;
pri = pri * 10 + (*(pptr+msg_off) - '0');
msg_off++;
if (!TTEST2(*(pptr+msg_off), 1))
goto trunc;
if (*(pptr+msg_off) == '>')
msg_off++;
}
} else {
printf("[|syslog]");
return;
}
facility = (pri & SYSLOG_FACILITY_MASK) >> 3;
severity = pri & SYSLOG_SEVERITY_MASK;
if (vflag < 1 )
{
printf("SYSLOG %s.%s, length: %u",
tok2str(syslog_facility_values, "unknown (%u)", facility),
tok2str(syslog_severity_values, "unknown (%u)", severity),
len);
return;
}
printf("SYSLOG, length: %u\n\tFacility %s (%u), Severity %s (%u)\n\tMsg: ",
len,
tok2str(syslog_facility_values, "unknown (%u)", facility),
facility,
tok2str(syslog_severity_values, "unknown (%u)", severity),
severity);
/* print the syslog text in verbose mode */
for (; msg_off < len; msg_off++) {
if (!TTEST2(*(pptr+msg_off), 1))
goto trunc;
safeputchar(*(pptr+msg_off));
}
if (vflag > 1) {
if(!print_unknown_data(pptr,"\n\t",len))
return;
}
return;
trunc:
printf("[|syslog]");
}
|
