etc/network.subr

   1 #!/bin/sh -x
   2 #
   3 # $FreeBSD$
   4 #
   5
   6 # PROVIDE: network1
   7 # REQUIRE: atm1 ipfilter mountcritlocal pccard serial sppp sysctl tty
   8 # KEYWORD: FreeBSD
   9
  10 . /etc/rc.subr
  11
  12 name="network1"
  13 start_cmd="network_start"
  14 stop_cmd="network_stop"
  15
  16 convert_host_conf()
  17 {
  18         host_conf=$1; shift;
  19         nsswitch_conf=$1; shift;
  20         awk '                                                               \
  21         /^[:blank:]*#/       { next }                                       \
  22         /(hosts|local|file)/ { nsswitch[c] = "files"; c++; next }           \
  23         /(dns|bind)/         { nsswitch[c] = "dns";   c++; next }           \
  24         /nis/                { nsswitch[c] = "nis";   c++; next }           \
  25         { printf "Warning: unrecognized line [%s]", $0 > "/dev/stderr" }    \
  26         END {                                                               \
  27                 printf "hosts: ";                                           \
  28                 for (i in nsswitch) printf "%s ", nsswitch[i];              \
  29                 printf "\n";                                                \
  30         }' < $host_conf > $nsswitch_conf
  31 }
  32
  33 generate_host_conf()
  34 {
  35         nsswitch_conf=$1; shift;
  36         host_conf=$1; shift;
  37
  38         awk '
  39         BEGIN {
  40                 xlat["files"] = "hosts";
  41                 xlat["dns"] = "bind";
  42                 xlat["nis"] = "nis";
  43                 cont = 0;
  44         }
  45         sub(/^[\t ]*hosts:/, "") || cont {
  46                 if (!cont)
  47                         srcs = ""
  48                 sub(/#.*/, "")
  49                 gsub(/[][]/, " & ")
  50                 cont = sub(/\\$/, "")
  51                 srcs = srcs " " $0
  52         }
  53         END {
  54                 print "# Auto-generated from nsswitch.conf, do not edit"
  55                 ns = split(srcs, s)
  56                 for (n = 1; n <= ns; ++n) {
  57                         if (s[n] in xlat)
  58                             print xlat[s[n]]
  59                 }
  60         }
  61         ' <$nsswitch_conf >$host_conf
  62 }
  63
  64 network_gif_setup() {
  65         case ${gif_interfaces} in
  66         [Nn][Oo] | '')
  67                 ;;
  68         *)
  69                 for i in ${gif_interfaces}; do
  70                         eval peers=\$gifconfig_$i
  71                         case ${peers} in
  72                         '')
  73                                 continue
  74                                 ;;
  75                         *)
  76                                 ifconfig $i create >/dev/null 2>&1
  77                                 ifconfig $i tunnel ${peers}
  78                                 ifconfig $i up
  79                                 ;;
  80                         esac
  81                 done
  82                 ;;
  83         esac
  84 }
  85
  86 network_start()
  87 {
  88         # set hostname, turn on network
  89         #
  90         echo -n "Doing initial network setup:"
  91
  92         # Generate host.conf for compatibility
  93         #
  94         if [ -f "/etc/nsswitch.conf" ]; then
  95                 echo -n ' host.conf'
  96                 generate_host_conf /etc/nsswitch.conf /etc/host.conf
  97         fi
  98
  99         # Convert host.conf to nsswitch.conf if necessary
 100         #
 101         if [ -f "/etc/host.conf" -a ! -f "/etc/nsswitch.conf" ]; then
 102                 echo ''
 103                 echo 'Warning: /etc/host.conf is no longer used'
 104                 echo '  /etc/nsswitch.conf will be created for you'
 105                 convert_host_conf /etc/host.conf /etc/nsswitch.conf
 106         fi
 107
 108         # Set the host name if it is not already set
 109         #
 110         if [ -z "`hostname -s`" ]; then
 111                 hostname ${hostname}
 112                 echo -n ' hostname'
 113         fi
 114
 115         # Set the domainname if we're using NIS
 116         #
 117         case ${nisdomainname} in
 118         [Nn][Oo]|'')
 119                 ;;
 120         *)
 121                 domainname ${nisdomainname}
 122                 echo -n ' domain'
 123                 ;;
 124         esac
 125
 126         echo '.'
 127
 128         # Attempt to create cloned interfaces.
 129         for ifn in ${cloned_interfaces}; do
 130                 ifconfig ${ifn} create
 131         done
 132
 133         # gifconfig
 134         network_gif_setup
 135
 136         # Set up all the network interfaces, calling startup scripts if needed
 137         #
 138         case ${network_interfaces} in
 139         [Aa][Uu][Tt][Oo])
 140                 network_interfaces="`ifconfig -l`"
 141                 ;;
 142         *)
 143                 network_interfaces="${network_interfaces} ${cloned_interfaces}"
 144                 ;;
 145         esac
 146
 147         dhcp_interfaces=""
 148         for ifn in ${network_interfaces}; do
 149                 _up=`ifconfig ${ifn} | head -1 | grep -v LOOPBACK | grep UP,`
 150                 if [ "$_up" != "" ]; then
 151                         # Interface is already up, so ignore it.
 152                         continue;
 153                 fi
 154
 155                 if [ -r /etc/start_if.${ifn} ]; then
 156                         . /etc/start_if.${ifn}
 157                         eval showstat_$ifn=1
 158                 fi
 159
 160                 # Do the primary ifconfig if specified
 161                 #
 162                 eval ifconfig_args=\$ifconfig_${ifn}
 163
 164                 case ${ifconfig_args} in
 165                 '')
 166                         ;;
 167                 [Dd][Hh][Cc][Pp])
 168                         # DHCP inits are done all in one go below
 169                         dhcp_interfaces="$dhcp_interfaces $ifn"
 170                         eval showstat_$ifn=1
 171                         ;;
 172                 *)
 173                         ifconfig ${ifn} ${ifconfig_args}
 174                         eval showstat_$ifn=1
 175                         ;;
 176                 esac
 177         done
 178
 179         if [ ! -z "${dhcp_interfaces}" ]; then
 180                 ${dhcp_program:-/sbin/dhclient} ${dhcp_flags} ${dhcp_interfaces}
 181         fi
 182
 183         for ifn in ${network_interfaces}; do
 184                 # Check to see if aliases need to be added
 185                 #
 186                 alias=0
 187                 while : ; do
 188                         eval ifconfig_args=\$ifconfig_${ifn}_alias${alias}
 189                         if [ -n "${ifconfig_args}" ]; then
 190                                 ifconfig ${ifn} ${ifconfig_args} alias
 191                                 eval showstat_$ifn=1
 192                                 alias=$((${alias} + 1))
 193                         else
 194                                 break;
 195                         fi
 196                 done
 197
 198                 # Do ipx address if specified
 199                 #
 200                 eval ifconfig_args=\$ifconfig_${ifn}_ipx
 201                 if [ -n "${ifconfig_args}" ]; then
 202                         ifconfig ${ifn} ${ifconfig_args}
 203                         eval showstat_$ifn=1
 204                 fi
 205         done
 206
 207         # Display ifconfiged interfaces
 208         for ifn in ${network_interfaces}; do
 209                 eval showstat=\$showstat_${ifn}
 210                 if [ ! -z ${showstat} ]; then
 211                         ifconfig ${ifn}
 212                 fi
 213         done
 214
 215         # Resync ipfilter
 216         /etc/rc.d/ipfilter resync
 217 }
 218
 219 network_stop()
 220 {
 221         echo -n "Stopping network:"
 222
 223         # flush routes
 224         #
 225         echo -n " flush routes"
 226         route -n flush
 227
 228         echo '.'
 229 }
 230
 231 load_rc_config $name
 232 run_rc_command "$1"