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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 | ||
77 | struct 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 | ||
95 | static struct ether_addr * | |
96 | my_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 *)ðer_addr; | |
136 | } | |
137 | ||
138 | int | |
139 | cmdline_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 | ||
170 | int | |
171 | cmdline_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 | } |