nsswitch revision 136224
1#!/bin/sh 2# 3# Copyright (c) 1993 - 2004 The FreeBSD Project. All rights reserved. 4# 5# Redistribution and use in source and binary forms, with or without 6# modification, are permitted provided that the following conditions 7# are met: 8# 1. Redistributions of source code must retain the above copyright 9# notice, this list of conditions and the following disclaimer. 10# 2. Redistributions in binary form must reproduce the above copyright 11# notice, this list of conditions and the following disclaimer in the 12# documentation and/or other materials provided with the distribution. 13# 14# THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 15# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17# ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 18# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24# SUCH DAMAGE. 25# 26# $FreeBSD: head/etc/rc.d/nsswitch 136224 2004-10-07 13:55:26Z mtm $ 27# 28 29# PROVIDE: nsswitch 30# REQUIRE: root 31# BEFORE: NETWORK 32 33. /etc/rc.subr 34 35name="nsswitch" 36start_cmd="nsswitch_start" 37stop_cmd=":" 38 39convert_host_conf() 40{ 41 host_conf=$1; shift; 42 nsswitch_conf=$1; shift; 43 awk ' \ 44 /^[:blank:]*#/ { next } \ 45 /(hosts|local|file)/ { nsswitch[c] = "files"; c++; next } \ 46 /(dns|bind)/ { nsswitch[c] = "dns"; c++; next } \ 47 /nis/ { nsswitch[c] = "nis"; c++; next } \ 48 { printf "Warning: unrecognized line [%s]", $0 > "/dev/stderr" } \ 49 END { \ 50 printf "hosts: "; \ 51 for (i in nsswitch) printf "%s ", nsswitch[i]; \ 52 printf "\n"; \ 53 }' < $host_conf > $nsswitch_conf 54} 55 56generate_nsswitch_conf() 57{ 58 nsswitch_conf=$1; shift; 59 60 cat >$nsswitch_conf <<EOF 61group: compat 62group_compat: nis 63hosts: files dns 64networks: files 65passwd: compat 66passwd_compat: nis 67shells: files 68EOF 69} 70 71generate_host_conf() 72{ 73 nsswitch_conf=$1; shift; 74 host_conf=$1; shift; 75 76 awk ' 77BEGIN { 78 xlat["files"] = "hosts"; 79 xlat["dns"] = "bind"; 80 xlat["nis"] = "nis"; 81 cont = 0; 82} 83sub(/^[\t ]*hosts:/, "") || cont { 84 if (!cont) 85 srcs = "" 86 sub(/#.*/, "") 87 gsub(/[][]/, " & ") 88 cont = sub(/\\$/, "") 89 srcs = srcs " " $0 90} 91END { 92 print "# Auto-generated from nsswitch.conf, do not edit" 93 ns = split(srcs, s) 94 for (n = 1; n <= ns; ++n) { 95 if (s[n] in xlat) 96 print xlat[s[n]] 97 } 98} 99' <$nsswitch_conf >$host_conf 100} 101 102nsswitch_start() 103{ 104 # Convert host.conf to nsswitch.conf if necessary 105 # 106 if [ -f "/etc/host.conf" -a ! -f "/etc/nsswitch.conf" ]; then 107 echo '' 108 echo 'Warning: /etc/host.conf is no longer used' 109 echo ' /etc/nsswitch.conf will be created for you' 110 convert_host_conf /etc/host.conf /etc/nsswitch.conf 111 fi 112 113 # Generate default nsswitch.conf if none exists 114 # 115 if [ ! -f "/etc/nsswitch.conf" ]; then 116 echo 'Generating nsswitch.conf.' 117 generate_nsswitch_conf /etc/nsswitch.conf 118 fi 119 120 # Generate host.conf for compatibility 121 # 122 if [ ! -f "/etc/host.conf" ]; then 123 echo 'Generating host.conf.' 124 generate_host_conf /etc/nsswitch.conf /etc/host.conf 125 fi 126 127} 128 129load_rc_config $name 130run_rc_command "$1" 131