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/*
*
* BlueZ - Bluetooth protocol stack for Linux
*
* Copyright (C) 2004-2006 Marcel Holtmann <marcel@holtmann.org>
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <errno.h>
#include <fcntl.h>
#include <unistd.h>
#include <malloc.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include "oui.h"
/* http://standards.ieee.org/regauth/oui/oui.txt */
#define OUIFILE "/var/lib/misc/oui.txt"
char *ouitocomp(const char *oui)
{
struct stat st;
char *str, *map, *off, *end;
int fd;
fd = open("oui.txt", O_RDONLY);
if (fd < 0) {
fd = open(OUIFILE, O_RDONLY);
if (fd < 0) {
fd = open("/usr/share/misc/oui.txt", O_RDONLY);
if (fd < 0)
return NULL;
}
}
if (fstat(fd, &st) < 0) {
close(fd);
return NULL;
}
str = malloc(128);
if (!str) {
close(fd);
return NULL;
}
memset(str, 0, 128);
map = mmap(0, st.st_size, PROT_READ, MAP_SHARED, fd, 0);
if (!map || map == MAP_FAILED) {
free(str);
close(fd);
return NULL;
}
off = strstr(map, oui);
if (off) {
off += 18;
end = strpbrk(off, "\r\n");
strncpy(str, off, end - off);
} else {
free(str);
str = NULL;
}
munmap(map, st.st_size);
close(fd);
return str;
}
int oui2comp(const char *oui, char *comp, size_t size)
{
char *tmp;
tmp = ouitocomp(oui);
if (!tmp)
return -1;
snprintf(comp, size, "%s", tmp);
free(tmp);
return 0;
}
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