Move tcpdump-3.9/ to tcpdump/. No need for a versioned dir.
[dragonfly.git] / contrib / tcpdump / print-syslog.c
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1/*
2 * Copyright (c) 1998-2004 Hannes Gredler <hannes@tcpdump.org>
3 * The TCPDUMP project
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that: (1) source code
7 * distributions retain the above copyright notice and this paragraph
8 * in its entirety, and (2) distributions including binary code include
9 * the above copyright notice and this paragraph in its entirety in
10 * the documentation or other materials provided with the distribution.
11 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND
12 * WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT
13 * LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
14 * FOR A PARTICULAR PURPOSE.
15 */
16
17#ifndef lint
18static const char rcsid[] _U_ =
19 "@(#) $Header: /tcpdump/master/tcpdump/print-syslog.c,v 1.1 2004/10/29 11:42:53 hannes Exp $";
20#endif
21
22#ifdef HAVE_CONFIG_H
23#include "config.h"
24#endif
25
26#include <tcpdump-stdinc.h>
27
28#include <stdio.h>
29#include <stdlib.h>
30
31#include "interface.h"
32#include "extract.h"
33#include "addrtoname.h"
34
35/*
36 * tokenlists and #defines taken from Ethereal - Network traffic analyzer
37 * by Gerald Combs <gerald@ethereal.com>
38 */
39
40#define SYSLOG_SEVERITY_MASK 0x0007 /* 0000 0000 0000 0111 */
41#define SYSLOG_FACILITY_MASK 0x03f8 /* 0000 0011 1111 1000 */
42#define SYSLOG_MAX_DIGITS 3 /* The maximum number if priority digits to read in. */
43
44static const struct tok syslog_severity_values[] = {
45 { 0, "emergency" },
46 { 1, "alert" },
47 { 2, "critical" },
48 { 3, "error" },
49 { 4, "warning" },
50 { 5, "notice" },
51 { 6, "info" },
52 { 7, "debug" },
53 { 0, NULL },
54};
55
56static const struct tok syslog_facility_values[] = {
57 { 0, "kernel" },
58 { 1, "user" },
59 { 2, "mail" },
60 { 3, "daemon" },
61 { 4, "auth" },
62 { 5, "syslog" },
63 { 6, "lpr" },
64 { 7, "news" },
65 { 8, "uucp" },
66 { 9, "cron" },
67 { 10, "authpriv" },
68 { 11, "ftp" },
69 { 12, "ntp" },
70 { 13, "security" },
71 { 14, "console" },
72 { 15, "cron" },
73 { 16, "local0" },
74 { 17, "local1" },
75 { 18, "local2" },
76 { 19, "local3" },
77 { 20, "local4" },
78 { 21, "local5" },
79 { 22, "local6" },
80 { 23, "local7" },
81 { 0, NULL },
82};
83
84void
85syslog_print(register const u_char *pptr, register u_int len)
86{
87 u_int16_t msg_off = 0;
88 u_int16_t pri = 0;
89 u_int16_t facility,severity;
90
91 /* extract decimal figures that are
92 * encapsulated within < > tags
93 * based on this decimal figure extract the
94 * severity and facility values
95 */
96
97 if (!TTEST2(*pptr, 1))
98 goto trunc;
99
100 if (*(pptr+msg_off) == '<') {
101 msg_off++;
102
103 if (!TTEST2(*(pptr+msg_off), 1))
104 goto trunc;
105
106 while ( *(pptr+msg_off) >= '0' &&
107 *(pptr+msg_off) <= '9' &&
108 msg_off <= SYSLOG_MAX_DIGITS) {
109
110 if (!TTEST2(*(pptr+msg_off), 1))
111 goto trunc;
112
113 pri = pri * 10 + (*(pptr+msg_off) - '0');
114 msg_off++;
115
116 if (!TTEST2(*(pptr+msg_off), 1))
117 goto trunc;
118
119 if (*(pptr+msg_off) == '>')
120 msg_off++;
121 }
122 } else {
123 printf("[|syslog]");
124 return;
125 }
126
127 facility = (pri & SYSLOG_FACILITY_MASK) >> 3;
128 severity = pri & SYSLOG_SEVERITY_MASK;
129
130
131 if (vflag < 1 )
132 {
133 printf("SYSLOG %s.%s, length: %u",
134 tok2str(syslog_facility_values, "unknown (%u)", facility),
135 tok2str(syslog_severity_values, "unknown (%u)", severity),
136 len);
137 return;
138 }
139
140 printf("SYSLOG, length: %u\n\tFacility %s (%u), Severity %s (%u)\n\tMsg: ",
141 len,
142 tok2str(syslog_facility_values, "unknown (%u)", facility),
143 facility,
144 tok2str(syslog_severity_values, "unknown (%u)", severity),
145 severity);
146
147 /* print the syslog text in verbose mode */
148 for (; msg_off < len; msg_off++) {
149 if (!TTEST2(*(pptr+msg_off), 1))
150 goto trunc;
151 safeputchar(*(pptr+msg_off));
152 }
153
154 if (vflag > 1) {
155 if(!print_unknown_data(pptr,"\n\t",len))
156 return;
157 }
158
159 return;
160
161trunc:
162 printf("[|syslog]");
163}