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                                 ;;
  79                         esac
  80                 done
  81                 ;;
  82         esac
  83 }
  84
  85 network_start()
  86 {
  87         # set hostname, turn on network
  88         #
  89         echo -n "Doing initial network setup:"
  90
  91         # Generate host.conf for compatibility
  92         #
  93         if [ -f "/etc/nsswitch.conf" ]; then
  94                 echo -n ' host.conf'
  95                 generate_host_conf /etc/nsswitch.conf /etc/host.conf
  96         fi
  97
  98         # Convert host.conf to nsswitch.conf if necessary
  99         #
 100         if [ -f "/etc/host.conf" -a ! -f "/etc/nsswitch.conf" ]; then
 101                 echo ''
 102                 echo 'Warning: /etc/host.conf is no longer used'
 103                 echo '  /etc/nsswitch.conf will be created for you'
 104                 convert_host_conf /etc/host.conf /etc/nsswitch.conf
 105         fi
 106
 107         # Set the host name if it is not already set
 108         #
 109         if [ -z "`hostname -s`" ]; then
 110                 hostname ${hostname}
 111                 echo -n ' hostname'
 112         fi
 113
 114         # Set the domainname if we're using NIS
 115         #
 116         case ${nisdomainname} in
 117         [Nn][Oo]|'')
 118                 ;;
 119         *)
 120                 domainname ${nisdomainname}
 121                 echo -n ' domain'
 122                 ;;
 123         esac
 124
 125         echo '.'
 126
 127         # Attempt to create cloned interfaces.
 128         for ifn in ${cloned_interfaces}; do
 129                 ifconfig ${ifn} create
 130         done
 131
 132         # gifconfig
 133         network_gif_setup
 134
 135         # Set up all the network interfaces, calling startup scripts if needed
 136         #
 137         case ${network_interfaces} in
 138         [Aa][Uu][Tt][Oo])
 139                 network_interfaces="`ifconfig -l`"
 140                 ;;
 141         *)
 142                 network_interfaces="${network_interfaces} ${cloned_interfaces}"
 143                 ;;
 144         esac
 145
 146         dhcp_interfaces=""
 147         for ifn in ${network_interfaces}; do
 148                 if [ -r /etc/start_if.${ifn} ]; then
 149                         . /etc/start_if.${ifn}
 150                         eval showstat_$ifn=1
 151                 fi
 152
 153                 # Do the primary ifconfig if specified
 154                 #
 155                 eval ifconfig_args=\$ifconfig_${ifn}
 156
 157                 case ${ifconfig_args} in
 158                 '')
 159                         ;;
 160                 [Dd][Hh][Cc][Pp])
 161                         # DHCP inits are done all in one go below
 162                         dhcp_interfaces="$dhcp_interfaces $ifn"
 163                         eval showstat_$ifn=1
 164                         ;;
 165                 *)
 166                         ifconfig ${ifn} ${ifconfig_args}
 167                         eval showstat_$ifn=1
 168                         ;;
 169                 esac
 170         done
 171
 172         if [ ! -z "${dhcp_interfaces}" ]; then
 173                 ${dhcp_program:-/sbin/dhclient} ${dhcp_flags} ${dhcp_interfaces}
 174         fi
 175
 176         for ifn in ${network_interfaces}; do
 177                 # Check to see if aliases need to be added
 178                 #
 179                 alias=0
 180                 while : ; do
 181                         eval ifconfig_args=\$ifconfig_${ifn}_alias${alias}
 182                         if [ -n "${ifconfig_args}" ]; then
 183                                 ifconfig ${ifn} ${ifconfig_args} alias
 184                                 eval showstat_$ifn=1
 185                                 alias=$((${alias} + 1))
 186                         else
 187                                 break;
 188                         fi
 189                 done
 190
 191                 # Do ipx address if specified
 192                 #
 193                 eval ifconfig_args=\$ifconfig_${ifn}_ipx
 194                 if [ -n "${ifconfig_args}" ]; then
 195                         ifconfig ${ifn} ${ifconfig_args}
 196                         eval showstat_$ifn=1
 197                 fi
 198         done
 199
 200         # catch-all for interfaces that haven't been 'ifconfig'ed so far
 201         for ifn in ${network_interfaces}; do
 202                 eval showstat=\$showstat_${ifn}
 203                 if [ ! -z ${showstat} ]; then
 204                         ifconfig ${ifn}
 205                 fi
 206         done
 207
 208         # Resync ipfilter
 209         /etc/rc.d/ipfilter resync
 210 }
 211
 212 network_stop()
 213 {
 214         echo -n "Stopping network:"
 215
 216         # flush routes
 217         #
 218         echo -n " flush routes"
 219         route -n flush
 220
 221         echo '.'
 222 }
 223
 224 load_rc_config $name
 225 run_rc_command "$1"