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 <[email protected]> 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 } 181