c022cb400e
Since we have support for the strlcpy function in DPDK, replace all instances where a string is copied using snprintf. Signed-off-by: Bruce Richardson <bruce.richardson@intel.com> Reviewed-by: Stephen Hemminger <stephen@networkplumber.org>
126 lines
2.7 KiB
C
126 lines
2.7 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 2010-2014 Intel Corporation.
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* Copyright (c) 2009, Olivier MATZ <zer0@droids-corp.org>
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* All rights reserved.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdarg.h>
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#include <errno.h>
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#include <inttypes.h>
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#include <ctype.h>
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#include <string.h>
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#include <sys/types.h>
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#include <net/ethernet.h>
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#include <rte_string_fns.h>
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#include "cmdline_parse.h"
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#include "cmdline_parse_etheraddr.h"
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struct cmdline_token_ops cmdline_token_etheraddr_ops = {
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.parse = cmdline_parse_etheraddr,
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.complete_get_nb = NULL,
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.complete_get_elt = NULL,
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.get_help = cmdline_get_help_etheraddr,
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};
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/* the format can be either XX:XX:XX:XX:XX:XX or XXXX:XXXX:XXXX */
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#define ETHER_ADDRSTRLENLONG 18
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#define ETHER_ADDRSTRLENSHORT 15
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#ifdef __linux__
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#define ea_oct ether_addr_octet
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#else
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#define ea_oct octet
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#endif
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static struct ether_addr *
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my_ether_aton(const char *a)
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{
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int i;
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char *end;
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unsigned long o[ETHER_ADDR_LEN];
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static struct ether_addr ether_addr;
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i = 0;
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do {
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errno = 0;
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o[i] = strtoul(a, &end, 16);
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if (errno != 0 || end == a || (end[0] != ':' && end[0] != 0))
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return NULL;
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a = end + 1;
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} while (++i != sizeof (o) / sizeof (o[0]) && end[0] != 0);
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/* Junk at the end of line */
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if (end[0] != 0)
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return NULL;
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/* Support the format XX:XX:XX:XX:XX:XX */
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if (i == ETHER_ADDR_LEN) {
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while (i-- != 0) {
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if (o[i] > UINT8_MAX)
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return NULL;
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ether_addr.ea_oct[i] = (uint8_t)o[i];
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}
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/* Support the format XXXX:XXXX:XXXX */
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} else if (i == ETHER_ADDR_LEN / 2) {
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while (i-- != 0) {
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if (o[i] > UINT16_MAX)
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return NULL;
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ether_addr.ea_oct[i * 2] = (uint8_t)(o[i] >> 8);
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ether_addr.ea_oct[i * 2 + 1] = (uint8_t)(o[i] & 0xff);
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}
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/* unknown format */
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} else
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return NULL;
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return (struct ether_addr *)ðer_addr;
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}
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int
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cmdline_parse_etheraddr(__attribute__((unused)) cmdline_parse_token_hdr_t *tk,
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const char *buf, void *res, unsigned ressize)
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{
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unsigned int token_len = 0;
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char ether_str[ETHER_ADDRSTRLENLONG+1];
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struct ether_addr *tmp;
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if (res && ressize < sizeof(struct ether_addr))
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return -1;
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if (!buf || ! *buf)
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return -1;
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while (!cmdline_isendoftoken(buf[token_len]))
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token_len++;
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/* if token doesn't match possible string lengths... */
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if ((token_len != ETHER_ADDRSTRLENLONG - 1) &&
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(token_len != ETHER_ADDRSTRLENSHORT - 1))
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return -1;
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strlcpy(ether_str, buf, token_len + 1);
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tmp = my_ether_aton(ether_str);
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if (tmp == NULL)
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return -1;
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if (res)
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memcpy(res, tmp, sizeof(struct ether_addr));
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return token_len;
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}
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int
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cmdline_get_help_etheraddr(__attribute__((unused)) cmdline_parse_token_hdr_t *tk,
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char *dstbuf, unsigned int size)
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{
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int ret;
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ret = snprintf(dstbuf, size, "Ethernet address");
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if (ret < 0)
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return -1;
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return 0;
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}
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