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
|
/*
* lib/tr.c This file contains an implementation of the "Tokenring"
* support functions.
*
* Version: $Id: tr.c,v 1.9 2005/05/16 03:15:12 ecki Exp $
*
* Author: Fred N. van Kempen, <waltje@uwalt.nl.mugnet.org>
* Copyright 1993 MicroWalt Corporation
*
* 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.
*/
#include "config.h"
#if HAVE_HWTR
#include <asm/types.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <net/if_arp.h>
#include <linux/if_tr.h>
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
#include <ctype.h>
#include <string.h>
#include <unistd.h>
#include "net-support.h"
#include "pathnames.h"
#include "intl.h"
#include "util.h"
/* actual definition at the end of file */
extern struct hwtype tr_hwtype;
#ifdef ARPHRD_IEEE802_TR
extern struct hwtype tr_hwtype1;
#endif
static const char *pr_tr(const char *ptr)
{
static char buff[64];
snprintf(buff, sizeof(buff), "%02X:%02X:%02X:%02X:%02X:%02X",
(ptr[0] & 0377), (ptr[1] & 0377), (ptr[2] & 0377),
(ptr[3] & 0377), (ptr[4] & 0377), (ptr[5] & 0377)
);
return (buff);
}
#ifdef DEBUG
#define _DEBUG 1
#else
#define _DEBUG 0
#endif
static int in_tr(char *bufp, struct sockaddr_storage *sasp)
{
struct sockaddr *sap = (struct sockaddr *)sasp;
char *ptr;
char c, *orig;
int i, val;
#ifdef ARPHRD_IEEE802_TR
if (kernel_version() < KRELEASE(2,3,30)) {
sap->sa_family = tr_hwtype.type;
} else {
sap->sa_family = tr_hwtype1.type;
}
#else
sap->sa_family = tr_hwtype.type;
#warning "Limited functionality, no support for ARPHRD_IEEE802_TR (old kernel headers?)"
#endif
ptr = sap->sa_data;
i = 0;
orig = bufp;
while ((*bufp != '\0') && (i < TR_ALEN)) {
val = 0;
c = *bufp++;
if (isdigit(c))
val = c - '0';
else if (c >= 'a' && c <= 'f')
val = c - 'a' + 10;
else if (c >= 'A' && c <= 'F')
val = c - 'A' + 10;
else {
if (_DEBUG)
fprintf(stderr, _("in_tr(%s): invalid token ring address!\n"), orig);
errno = EINVAL;
return (-1);
}
val <<= 4;
c = *bufp++;
if (isdigit(c))
val |= c - '0';
else if (c >= 'a' && c <= 'f')
val |= c - 'a' + 10;
else if (c >= 'A' && c <= 'F')
val |= c - 'A' + 10;
else {
if (_DEBUG)
fprintf(stderr, _("in_tr(%s): invalid token ring address!\n"), orig);
errno = EINVAL;
return (-1);
}
*ptr++ = (unsigned char) (val & 0377);
i++;
/* We might get a semicolon here - not required. */
if (*bufp == ':') {
if (_DEBUG && i == TR_ALEN)
fprintf(stderr, _("in_tr(%s): trailing : ignored!\n"),
orig);
bufp++;
}
}
/* That's it. Any trailing junk? */
if (_DEBUG && (i == TR_ALEN) && (*bufp != '\0')) {
fprintf(stderr, _("in_tr(%s): trailing junk!\n"), orig);
errno = EINVAL;
return (-1);
}
if (_DEBUG)
fprintf(stderr, "in_tr(%s): %s\n", orig, pr_tr(sap->sa_data));
return (0);
}
struct hwtype tr_hwtype =
{
"tr", NULL /* "16/4 Mbps Token Ring" */, ARPHRD_IEEE802, TR_ALEN,
pr_tr, in_tr, NULL
};
#ifdef ARPHRD_IEEE802_TR
struct hwtype tr_hwtype1 =
{
"tr", NULL /* "16/4 Mbps Token Ring" */, ARPHRD_IEEE802_TR, TR_ALEN,
pr_tr, in_tr, NULL
};
#endif
#endif /* HAVE_HWTR */
|
