glibc/inet/ether_line.c
Andreas Jaeger 41bdb6e20c Update to LGPL v2.1.
2001-07-06  Paul Eggert  <eggert@twinsun.com>

	* manual/argp.texi: Remove ignored LGPL copyright notice; it's
	not appropriate for documentation anyway.
	* manual/libc-texinfo.sh: "Library General Public License" ->
	"Lesser General Public License".

2001-07-06  Andreas Jaeger  <aj@suse.de>

	* All files under GPL/LGPL version 2: Place under LGPL version
	2.1.
2001-07-06 04:58:11 +00:00

80 lines
2.1 KiB
C

/* Copyright (C) 1996, 1999 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <ctype.h>
#include <stdlib.h>
#include <string.h>
#include <netinet/ether.h>
#include <netinet/if_ether.h>
int
ether_line (const char *line, struct ether_addr *addr, char *hostname)
{
size_t cnt;
char *cp;
for (cnt = 0; cnt < 6; ++cnt)
{
unsigned int number;
char ch;
ch = _tolower (*line++);
if ((ch < '0' || ch > '9') && (ch < 'a' || ch > 'f'))
return -1;
number = isdigit (ch) ? (ch - '0') : (ch - 'a' + 10);
ch = _tolower (*line);
if ((cnt < 5 && ch != ':') || (cnt == 5 && ch != '\0' && !isspace (ch)))
{
++line;
if ((ch < '0' || ch > '9') && (ch < 'a' || ch > 'f'))
return -1;
number <<= 4;
number = isdigit (ch) ? (ch - '0') : (ch - 'a' + 10);
ch = *line;
if (cnt < 5 && ch != ':')
return -1;
}
/* Store result. */
addr->ether_addr_octet[cnt] = (unsigned char) number;
/* Skip ':'. */
if (ch != '\0')
++line;
}
/* Remove trailing white space. */
cp = __strchrnul (line, '#');
while (cp > line && isspace (cp[-1]))
--cp;
*cp = '\0';
if (*line == '\0')
/* No hostname. */
return -1;
/* XXX This can cause trouble because the hostname might be too long
but we have no possibility to check it here. */
strcpy (hostname, line);
return 0;
}