89 lines
2.7 KiB
C
89 lines
2.7 KiB
C
/*
|
|
* Copyright (C) 2010 The Android Open Source Project
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* * Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* * Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
|
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
|
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
|
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
|
|
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <sys/types.h>
|
|
#include <net/if_ether.h>
|
|
#include <ctype.h>
|
|
|
|
static inline int
|
|
xdigit (char c) {
|
|
unsigned d;
|
|
d = (unsigned)(c-'0');
|
|
if (d < 10) return (int)d;
|
|
d = (unsigned)(c-'a');
|
|
if (d < 6) return (int)(10+d);
|
|
d = (unsigned)(c-'A');
|
|
if (d < 6) return (int)(10+d);
|
|
return -1;
|
|
}
|
|
|
|
/*
|
|
* Convert Ethernet address in the standard hex-digits-and-colons to binary
|
|
* representation.
|
|
* Re-entrant version (GNU extensions)
|
|
*/
|
|
struct ether_addr *
|
|
ether_aton_r (const char *asc, struct ether_addr * addr)
|
|
{
|
|
int i, val0, val1;
|
|
for (i = 0; i < ETHER_ADDR_LEN; ++i) {
|
|
val0 = xdigit(*asc);
|
|
asc++;
|
|
if (val0 < 0)
|
|
return NULL;
|
|
|
|
val1 = xdigit(*asc);
|
|
asc++;
|
|
if (val1 < 0)
|
|
return NULL;
|
|
|
|
addr->ether_addr_octet[i] = (u_int8_t)((val0 << 4) + val1);
|
|
|
|
if (i < ETHER_ADDR_LEN - 1) {
|
|
if (*asc != ':')
|
|
return NULL;
|
|
asc++;
|
|
}
|
|
}
|
|
if (*asc != '\0')
|
|
return NULL;
|
|
return addr;
|
|
}
|
|
|
|
/*
|
|
* Convert Ethernet address in the standard hex-digits-and-colons to binary
|
|
* representation.
|
|
*/
|
|
struct ether_addr *
|
|
ether_aton (const char *asc)
|
|
{
|
|
static struct ether_addr addr;
|
|
return ether_aton_r(asc, &addr);
|
|
}
|