etc/rc.d/nsswitch

   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: src/etc/rc.d/nsswitch,v 1.10 2006/05/01 11:02:48 des Exp $
  27 #
  28
  29 # PROVIDE: nsswitch
  30 # REQUIRE: root
  31 # BEFORE:  NETWORK
  32
  33 . /etc/rc.subr
  34
  35 name="nsswitch"
  36 start_cmd="nsswitch_start"
  37 stop_cmd=":"
  38
  39 convert_host_conf()
  40 {
  41     host_conf=$1; shift;
  42     nsswitch_conf=$1; shift;
  43
  44     while read line; do
  45         line=${line##[  ]}
  46         case $line in
  47         hosts|local|file)
  48                 _nsswitch="${_nsswitch}${_nsswitch+ }files"
  49                 ;;
  50         dns|bind)
  51                 _nsswitch="${_nsswitch}${_nsswitch+ }dns"
  52                 ;;
  53         nis)
  54                 _nsswitch="${_nsswitch}${_nsswitch+ }nis"
  55                 ;;
  56         '#'*)
  57                 ;;
  58         *)
  59                 printf "Warning: unrecognized line [%s]", $line > "/dev/stderr"
  60                 ;;
  61
  62         esac
  63     done < $host_conf
  64
  65     echo "hosts: $_nsswitch" > $nsswitch_conf
  66 }
  67
  68 generate_nsswitch_conf()
  69 {
  70     nsswitch_conf=$1; shift;
  71
  72     cat >$nsswitch_conf <<EOF
  73 group: compat
  74 group_compat: nis
  75 hosts: files dns
  76 networks: files
  77 passwd: compat
  78 passwd_compat: nis
  79 shells: files
  80 services: compat
  81 services_compat: nis
  82 protocols: files
  83 rpc: files
  84 EOF
  85 }
  86
  87 generate_host_conf()
  88 {
  89     nsswitch_conf=$1; shift;
  90     host_conf=$1; shift;
  91
  92     _cont=0
  93     _sources=""
  94     while read line; do
  95         line=${line##[  ]}
  96         case $line in
  97         hosts:*)
  98                 ;;
  99         *)
 100                 if [ $_cont -ne 1 ]; then
 101                         continue
 102                 fi
 103                 ;;
 104         esac
 105         if [ "${line%\\}" = "${line}\\" ]; then
 106                 _cont=1
 107         fi
 108         line=${line#hosts:}
 109         line=${line%\\}
 110         line=${line%%#*}
 111         _sources="${_sources}${_sources:+ }$line"
 112     done < $nsswitch_conf
 113
 114     echo "# Auto-generated from nsswitch.conf" > $host_conf
 115     for _s in ${_sources}; do
 116         case $_s in
 117         files)
 118                 echo "hosts" >> $host_conf
 119                 ;;
 120         dns)
 121                 echo "dns" >> $host_conf
 122                 ;;
 123         nis)
 124                 echo "nis" >> $host_conf
 125                 ;;
 126         *=*)
 127                 ;;
 128         *)
 129                 printf "Warning: unrecognized source [%s]", $_s > "/dev/stderr"
 130                 ;;
 131         esac
 132     done
 133 }
 134
 135 nsswitch_start()
 136 {
 137         # Convert host.conf to nsswitch.conf if necessary
 138         #
 139         if [ -f "/etc/host.conf" -a ! -f "/etc/nsswitch.conf" ]; then
 140                 echo ''
 141                 echo 'Warning: /etc/host.conf is no longer used'
 142                 echo '  /etc/nsswitch.conf will be created for you'
 143                 convert_host_conf /etc/host.conf /etc/nsswitch.conf
 144         fi
 145
 146         # Generate default nsswitch.conf if none exists
 147         #
 148         if [ ! -f "/etc/nsswitch.conf" ]; then
 149                 echo 'Generating nsswitch.conf.'
 150                 generate_nsswitch_conf /etc/nsswitch.conf
 151         fi
 152
 153         # Generate host.conf for compatibility
 154         #
 155         if [ ! -f "/etc/host.conf" -o \
 156                 "/etc/host.conf" -ot "/etc/nsswitch.conf" ]
 157         then
 158                 echo 'Generating host.conf.'
 159                 generate_host_conf /etc/nsswitch.conf /etc/host.conf
 160         fi
 161
 162 }
 163
 164 load_rc_config $name
 165 run_rc_command "$1"