2N/A/*
2N/A * CDDL HEADER START
2N/A *
2N/A * The contents of this file are subject to the terms of the
2N/A * Common Development and Distribution License (the "License").
2N/A * You may not use this file except in compliance with the License.
2N/A *
2N/A * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
2N/A * or http://www.opensolaris.org/os/licensing.
2N/A * See the License for the specific language governing permissions
2N/A * and limitations under the License.
2N/A *
2N/A * When distributing Covered Code, include this CDDL HEADER in each
2N/A * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
2N/A * If applicable, add the following below this CDDL HEADER, with the
2N/A * fields enclosed by brackets "[]" replaced with your own identifying
2N/A * information: Portions Copyright [yyyy] [name of copyright owner]
2N/A *
2N/A * CDDL HEADER END
2N/A */
2N/A/*
2N/A * files/ether_addr.c -- "files" backend for nsswitch "ethers" database
2N/A *
2N/A * Copyright (c) 1991, 2011, Oracle and/or its affiliates. All rights reserved.
2N/A */
2N/A
2N/A/*
2N/A * All routines necessary to deal with the file /etc/ethers. The file
2N/A * contains mappings from 48 bit ethernet addresses to their corresponding
2N/A * hosts names. The addresses have an ascii representation of the form
2N/A * "x:x:x:x:x:x" where x is a hex number between 0x00 and 0xff; the
2N/A * bytes are always in network order.
2N/A */
2N/A
2N/A#include <sys/types.h>
2N/A#include <sys/socket.h>
2N/A#include <net/if.h>
2N/A#include <netinet/in.h>
2N/A#include <netinet/if_ether.h>
2N/A#include <nss_dbdefs.h>
2N/A#include "files_common.h"
2N/A#include <strings.h>
2N/A#include <ctype.h>
2N/A
2N/A#define _PATH_ETHERS "/etc/ethers"
2N/A#define DIGIT(x) \
2N/A (isdigit(x) ? (x) - '0' : islower(x) ? (x) + 10 - 'a' : (x) + 10 - 'A')
2N/A
2N/Astatic int
2N/Acheck_host(nss_XbyY_args_t *argp, const char *line, int linelen)
2N/A{
2N/A const char *limit, *linep, *keyp;
2N/A linep = line;
2N/A limit = line + linelen;
2N/A
2N/A /* skip leading spaces */
2N/A while (linep < limit && isspace(*linep))
2N/A linep++;
2N/A /* skip mac address */
2N/A while (linep < limit && !isspace(*linep))
2N/A linep++;
2N/A /* skip the delimiting spaces */
2N/A while (linep < limit && isspace(*linep))
2N/A linep++;
2N/A if (linep == limit)
2N/A return (0);
2N/A
2N/A /* compare the host name */
2N/A keyp = argp->key.name;
2N/A while (*keyp != '\0' && linep < limit && *keyp == *linep) {
2N/A keyp++;
2N/A linep++;
2N/A }
2N/A return (*keyp == '\0' && linep == limit);
2N/A}
2N/A
2N/Astatic nss_status_t
2N/Agetbyhost(be, a)
2N/A files_backend_ptr_t be;
2N/A void *a;
2N/A{
2N/A nss_XbyY_args_t *argp = (nss_XbyY_args_t *)a;
2N/A char hostname[MAXHOSTNAMELEN];
2N/A nss_status_t res;
2N/A
2N/A /*
2N/A * use the buffer passed in if result is to be returned
2N/A * in /etc file format
2N/A */
2N/A if (argp->buf.result != NULL) {
2N/A argp->buf.buffer = hostname;
2N/A argp->buf.buflen = MAXHOSTNAMELEN;
2N/A }
2N/A
2N/A res = _nss_files_XY_all(be, argp, 1, argp->key.name, check_host);
2N/A
2N/A if (argp->buf.result != NULL) {
2N/A argp->buf.buffer = NULL;
2N/A argp->buf.buflen = 0;
2N/A }
2N/A
2N/A return (res);
2N/A}
2N/A
2N/Astatic int
2N/Acheck_ether(nss_XbyY_args_t *argp, const char *line, int linelen)
2N/A{
2N/A
2N/A const char *limit, *linep;
2N/A uchar_t ether[6];
2N/A ptrdiff_t i;
2N/A int n;
2N/A
2N/A linep = line;
2N/A limit = line + linelen;
2N/A
2N/A /* skip leading spaces */
2N/A while (linep < limit && isspace(*linep))
2N/A linep++;
2N/A
2N/A for (i = 0; i < 6; i++) {
2N/A n = 0;
2N/A while (linep < limit && isxdigit(*linep)) {
2N/A n = 16 * n + DIGIT(*linep);
2N/A linep++;
2N/A }
2N/A if (*linep != ':' && i < 5) {
2N/A return (0);
2N/A } else if (*linep == ':' && i == 5) {
2N/A return (0);
2N/A } else {
2N/A linep++;
2N/A ether[i] = (uchar_t)n;
2N/A }
2N/A }
2N/A return (ether_cmp((void *)ether, (void *)argp->key.ether) == 0);
2N/A}
2N/A
2N/Astatic nss_status_t
2N/Agetbyether(be, a)
2N/A files_backend_ptr_t be;
2N/A void *a;
2N/A{
2N/A nss_XbyY_args_t *argp = (nss_XbyY_args_t *)a;
2N/A struct ether_addr etheraddr;
2N/A nss_status_t res;
2N/A
2N/A argp->buf.result = &etheraddr;
2N/A
2N/A res = _nss_files_XY_all(be, argp, 0, NULL, check_ether);
2N/A
2N/A argp->buf.result = NULL;
2N/A return (res);
2N/A}
2N/A
2N/Astatic files_backend_op_t ethers_ops[] = {
2N/A _nss_files_destr,
2N/A getbyhost,
2N/A getbyether
2N/A};
2N/A
2N/A/*ARGSUSED*/
2N/Anss_backend_t *
2N/A_nss_files_ethers_constr(dummy1, dummy2, dummy3)
2N/A const char *dummy1, *dummy2, *dummy3;
2N/A{
2N/A return (_nss_files_constr(ethers_ops,
2N/A sizeof (ethers_ops) / sizeof (ethers_ops[0]),
2N/A _PATH_ETHERS,
2N/A NSS_LINELEN_ETHERS,
2N/A NULL, 0));
2N/A}