48 lines
897 B
C
48 lines
897 B
C
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/*
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* Copyright (c) 2017 Linus Lüssing <linus.luessing@c0d3.blue>
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*
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* SPDX-License-Identifier: GPL-2.0+
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* License-Filename: LICENSE
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*/
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#include <linux/if_ether.h>
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#include <stdio.h>
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#include <string.h>
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#include "mac.h"
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#define ETH_STRLEN (sizeof("aa:bb:cc:dd:ee:ff") - 1)
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char mntoa_buf[ETH_STRLEN+1];
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int mac_aton(const char *cp, struct mac_addr *mac)
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{
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struct mac_addr m;
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int ret;
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if (strlen(cp) != ETH_STRLEN)
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return 0;
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memset(&m, 0, sizeof(m));
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ret = sscanf(cp, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx",
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&m.storage[0], &m.storage[1], &m.storage[2],
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&m.storage[3], &m.storage[4], &m.storage[5]);
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if (ret != ETH_ALEN)
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return 0;
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*mac = m;
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return 1;
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}
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char *mac_ntoa(struct mac_addr *mac)
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{
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unsigned char *m = mac->storage;
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snprintf(mntoa_buf, sizeof(mntoa_buf),
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"%02x:%02x:%02x:%02x:%02x:%02x",
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m[0], m[1], m[2], m[3], m[4], m[5]);
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return mntoa_buf;
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}
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