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: FILESYSTEMS
  31 # BEFORE:  NETWORKING
  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 \
  60                                 > /dev/stderr
  61                         ;;
  62
  63                 esac
  64         done < $host_conf
  65
  66         echo "hosts: $_nsswitch" > $nsswitch_conf
  67 }
  68
  69 generate_nsswitch_conf()
  70 {
  71         nsswitch_conf=$1; shift;
  72
  73         cat >$nsswitch_conf <<EOF
  74 group: compat
  75 group_compat: nis
  76 hosts: files dns
  77 networks: files
  78 passwd: compat
  79 passwd_compat: nis
  80 shells: files
  81 services: compat
  82 services_compat: nis
  83 protocols: files
  84 rpc: files
  85 EOF
  86 }
  87
  88 generate_host_conf()
  89 {
  90         nsswitch_conf=$1; shift;
  91         host_conf=$1; shift;
  92
  93         _cont=0
  94         _sources=""
  95         while read line; do
  96                 line=${line##[  ]}
  97                 case $line in
  98                 hosts:*)
  99                         ;;
 100                 *)
 101                         if [ $_cont -ne 1 ]; then
 102                                 continue
 103                         fi
 104                         ;;
 105                 esac
 106                 if [ "${line%\\}" = "${line}\\" ]; then
 107                         _cont=1
 108                 fi
 109                 line=${line#hosts:}
 110                 line=${line%\\}
 111                 line=${line%%#*}
 112                 _sources="${_sources}${_sources:+ }$line"
 113         done < $nsswitch_conf
 114
 115         echo "# Auto-generated from nsswitch.conf" > $host_conf
 116         for _s in ${_sources}; do
 117                 case $_s in
 118                 files)
 119                         echo "hosts" >> $host_conf
 120                         ;;
 121                 dns)
 122                         echo "dns" >> $host_conf
 123                         ;;
 124                 nis)
 125                         echo "nis" >> $host_conf
 126                         ;;
 127                 *=*)
 128                         ;;
 129                 *)
 130                         printf "Warning: unrecognized source [%s]", $_s \
 131                                 > /dev/stderr
 132                         ;;
 133                 esac
 134         done
 135 }
 136
 137 nsswitch_start()
 138 {
 139         # Convert host.conf to nsswitch.conf if necessary
 140         #
 141         if [ -f "/etc/host.conf" -a ! -f "/etc/nsswitch.conf" ]; then
 142                 echo ''
 143                 echo 'Warning: /etc/host.conf is no longer used'
 144                 echo '  /etc/nsswitch.conf will be created for you'
 145                 convert_host_conf /etc/host.conf /etc/nsswitch.conf
 146         fi
 147
 148         # Generate default nsswitch.conf if none exists
 149         #
 150         if [ ! -f "/etc/nsswitch.conf" ]; then
 151                 echo 'Generating nsswitch.conf.'
 152                 generate_nsswitch_conf /etc/nsswitch.conf
 153         fi
 154
 155         # Generate host.conf for compatibility
 156         #
 157         if [ ! -f "/etc/host.conf" -o \
 158                 "/etc/host.conf" -ot "/etc/nsswitch.conf" ]
 159         then
 160                 echo 'Generating host.conf.'
 161                 generate_host_conf /etc/nsswitch.conf /etc/host.conf
 162         fi
 163
 164 }
 165
 166 load_rc_config $name
 167 run_rc_command "$1"