1/*-
2 *   BSD LICENSE
3 *
4 *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
5 *   All rights reserved.
6 *
7 *   Redistribution and use in source and binary forms, with or without
8 *   modification, are permitted provided that the following conditions
9 *   are met:
10 *
11 *     * Redistributions of source code must retain the above copyright
12 *       notice, this list of conditions and the following disclaimer.
13 *     * Redistributions in binary form must reproduce the above copyright
14 *       notice, this list of conditions and the following disclaimer in
15 *       the documentation and/or other materials provided with the
16 *       distribution.
17 *     * Neither the name of Intel Corporation nor the names of its
18 *       contributors may be used to endorse or promote products derived
19 *       from this software without specific prior written permission.
20 *
21 *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
24 *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
25 *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26 *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
27 *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
31 *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 */
33
34/*
35 * Copyright (c) 2009, Olivier MATZ <zer0@droids-corp.org>
36 * All rights reserved.
37 * Redistribution and use in source and binary forms, with or without
38 * modification, are permitted provided that the following conditions are met:
39 *
40 *     * Redistributions of source code must retain the above copyright
41 *       notice, this list of conditions and the following disclaimer.
42 *     * Redistributions in binary form must reproduce the above copyright
43 *       notice, this list of conditions and the following disclaimer in the
44 *       documentation and/or other materials provided with the distribution.
45 *     * Neither the name of the University of California, Berkeley nor the
46 *       names of its contributors may be used to endorse or promote products
47 *       derived from this software without specific prior written permission.
48 *
49 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ANY
50 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
51 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
52 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS AND CONTRIBUTORS BE LIABLE FOR ANY
53 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
54 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
55 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
56 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
57 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
58 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
59 */
60
61#include <stdio.h>
62#include <stdlib.h>
63#include <stdarg.h>
64#include <errno.h>
65#include <inttypes.h>
66#include <ctype.h>
67#include <string.h>
68#include <errno.h>
69#include <sys/types.h>
70#include <net/ethernet.h>
71
72#include <rte_string_fns.h>
73
74#include "cmdline_parse.h"
75#include "cmdline_parse_etheraddr.h"
76
77struct cmdline_token_ops cmdline_token_etheraddr_ops = {
78	.parse = cmdline_parse_etheraddr,
79	.complete_get_nb = NULL,
80	.complete_get_elt = NULL,
81	.get_help = cmdline_get_help_etheraddr,
82};
83
84/* the format can be either XX:XX:XX:XX:XX:XX or XXXX:XXXX:XXXX */
85#define ETHER_ADDRSTRLENLONG 18
86#define ETHER_ADDRSTRLENSHORT 15
87
88#ifdef __linux__
89#define ea_oct ether_addr_octet
90#else
91#define ea_oct octet
92#endif
93
94
95static struct ether_addr *
96my_ether_aton(const char *a)
97{
98	int i;
99	char *end;
100	unsigned long o[ETHER_ADDR_LEN];
101	static struct ether_addr ether_addr;
102
103	i = 0;
104	do {
105		errno = 0;
106		o[i] = strtoul(a, &end, 16);
107		if (errno != 0 || end == a || (end[0] != ':' && end[0] != 0))
108			return NULL;
109		a = end + 1;
110	} while (++i != sizeof (o) / sizeof (o[0]) && end[0] != 0);
111
112	/* Junk at the end of line */
113	if (end[0] != 0)
114		return NULL;
115
116	/* Support the format XX:XX:XX:XX:XX:XX */
117	if (i == ETHER_ADDR_LEN) {
118		while (i-- != 0) {
119			if (o[i] > UINT8_MAX)
120				return NULL;
121			ether_addr.ea_oct[i] = (uint8_t)o[i];
122		}
123	/* Support the format XXXX:XXXX:XXXX */
124	} else if (i == ETHER_ADDR_LEN / 2) {
125		while (i-- != 0) {
126			if (o[i] > UINT16_MAX)
127				return NULL;
128			ether_addr.ea_oct[i * 2] = (uint8_t)(o[i] >> 8);
129			ether_addr.ea_oct[i * 2 + 1] = (uint8_t)(o[i] & 0xff);
130		}
131	/* unknown format */
132	} else
133		return NULL;
134
135	return (struct ether_addr *)&ether_addr;
136}
137
138int
139cmdline_parse_etheraddr(__attribute__((unused)) cmdline_parse_token_hdr_t *tk,
140	const char *buf, void *res, unsigned ressize)
141{
142	unsigned int token_len = 0;
143	char ether_str[ETHER_ADDRSTRLENLONG+1];
144	struct ether_addr *tmp;
145
146	if (res && ressize < sizeof(struct ether_addr))
147		return -1;
148
149	if (!buf || ! *buf)
150		return -1;
151
152	while (!cmdline_isendoftoken(buf[token_len]))
153		token_len++;
154
155	/* if token doesn't match possible string lengths... */
156	if ((token_len != ETHER_ADDRSTRLENLONG - 1) &&
157			(token_len != ETHER_ADDRSTRLENSHORT - 1))
158		return -1;
159
160	snprintf(ether_str, token_len+1, "%s", buf);
161
162	tmp = my_ether_aton(ether_str);
163	if (tmp == NULL)
164		return -1;
165	if (res)
166		memcpy(res, tmp, sizeof(struct ether_addr));
167	return token_len;
168}
169
170int
171cmdline_get_help_etheraddr(__attribute__((unused)) cmdline_parse_token_hdr_t *tk,
172			       char *dstbuf, unsigned int size)
173{
174	int ret;
175
176	ret = snprintf(dstbuf, size, "Ethernet address");
177	if (ret < 0)
178		return -1;
179	return 0;
180}
181