Last change
on this file since 3650 was 3621, checked in by Bruno Cornec, 8 years ago |
New 3?3 banch for incorporation of latest busybox 1.25. Changing minor version to handle potential incompatibilities.
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Property svn:eol-style
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File size:
1.1 KB
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1 | /* vi: set sw=4 ts=4: */
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2 | /*
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3 | * Utility routines.
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4 | */
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5 |
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6 | //kbuild:lib-$(CONFIG_ARP) += in_ether.o
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7 | //kbuild:lib-$(CONFIG_IFCONFIG) += in_ether.o
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8 | //kbuild:lib-$(CONFIG_IFENSLAVE) += in_ether.o
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9 |
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10 | #include "libbb.h"
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11 | #include <net/if_arp.h>
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12 | #include <net/ethernet.h>
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13 |
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14 | /* Convert Ethernet address from "XX[:]XX[:]XX[:]XX[:]XX[:]XX" to sockaddr.
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15 | * Return nonzero on error.
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16 | */
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17 | int FAST_FUNC in_ether(const char *bufp, struct sockaddr *sap)
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18 | {
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19 | char *ptr;
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20 | int i, j;
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21 | unsigned char val;
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22 | unsigned char c;
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23 |
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24 | sap->sa_family = ARPHRD_ETHER;
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25 | ptr = (char *) sap->sa_data;
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26 |
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27 | i = ETH_ALEN;
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28 | goto first;
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29 | do {
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30 | /* We might get a semicolon here */
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31 | if (*bufp == ':')
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32 | bufp++;
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33 | first:
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34 | j = val = 0;
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35 | do {
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36 | c = *bufp;
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37 | if (((unsigned char)(c - '0')) <= 9) {
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38 | c -= '0';
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39 | } else if ((unsigned char)((c|0x20) - 'a') <= 5) {
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40 | c = (unsigned char)((c|0x20) - 'a') + 10;
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41 | } else {
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42 | if (j && (c == ':' || c == '\0'))
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43 | /* One-digit byte: __:X:__ */
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44 | break;
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45 | return -1;
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46 | }
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47 | ++bufp;
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48 | val <<= 4;
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49 | val += c;
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50 | j ^= 1;
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51 | } while (j);
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52 |
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53 | *ptr++ = val;
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54 | } while (--i);
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55 |
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56 | /* Error if we aren't at end of string */
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57 | return *bufp;
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58 | }
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