/* * Copyright (c) 2007 Apple Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this * file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_LICENSE_HEADER_END@ */ #include <string.h> #include <stdio.h> #include <unistd.h> #include "autofs.h" #include "automount.h" int host_is_us(const char *host, size_t hostlen) { char thishost[MAXHOSTNAMELEN]; static const char localhost[] = "localhost"; size_t thishost_len; char *p; /* * This is, by definition, us. */ if (hostlen == sizeof localhost - 1 && memcmp(host, localhost, sizeof localhost - 1) == 0) return (1); /* * Get our hostname, and compare the counted string we were * handed with the host name. */ gethostname(thishost, MAXHOSTNAMELEN); thishost_len = strlen(thishost); if (hostlen == thishost_len && memcmp(host, thishost, thishost_len) == 0) return (1); /* * Compare the counted string we were handed with the first * component of the host name, if it has more than one component. */ p = strchr(thishost, '.'); if (p != NULL) { thishost_len = p - thishost; if (hostlen == thishost_len && memcmp(host, thishost, thishost_len) == 0) return(1); } /* Not us. */ return (0); }