rc.d/init.d/functions.network

   1 #
   2 # $Id: functions.network,v 1.11 1999/07/15 13:29:44 misiek Exp $
   3 #
   4 # This is not a shell script; it provides functions to network scripts
   5 # that source it.
   6
   7 source_config ()
   8 {
   9     DEVNAME=`basename $CONFIG | sed 's/^ifcfg-//g'`
  10
  11     if basename $CONFIG | grep -q '[^g]-' ; then
  12         PARENTCONFIG=`echo $CONFIG | sed 's/-[^-]*$//g'`
  13         PARENTDEVNAME=`echo $PARENTCONFIG | sed 's/^ifcfg-//g'`
  14         [ -f $PARENTCONFIG ] || {
  15             echo "Missing config file $PARENTCONFIG." >&2
  16             exit 1
  17         }
  18         . ./$PARENTCONFIG
  19     fi
  20     . /etc/sysconfig/interfaces/$CONFIG
  21 }
  22
  23 do_netreport ()
  24 {
  25   # Notify programs that have requested notification
  26   ( cd /var/run/netreport || exit
  27     for i in * ; do
  28       [ -f $i ] && \
  29         kill -SIGIO $i >/dev/null 2>&1 || \
  30           rm -f $i >/dev/null 2>&1
  31     done
  32   )
  33 }
  34
  35 need_hostname()
  36 {
  37     if [ "`hostname`" = "(none)" -o "`hostname`" = "localhost" -o \
  38          "`hostname`" = "localhost.localdomain" ]; then
  39         NEEDHOSTNAME=yes
  40     else
  41         unset NEEDHOSTNAME
  42     fi
  43 }
  44
  45 set_hostname()
  46 {
  47     echo "$1" > /etc/HOSTNAME
  48     hostname $1
  49     if ! grep search /etc/resolv.conf; then
  50         domain=`echo $1 | sed 's/^[^\.]*\.//'`
  51         echo "search $domain" >> /etc/resolv.conf
  52     fi
  53 }
  54
  55 # PLD network functions
  56 # (C) 1999 Arkadiusz Mi¶kiewicz <misiek@pld.org.pl>
  57 #
  58 # All functions must be called "name_of_function on" or "name_of_function off"
  59
  60 # proc_net <zmien> <start/stop> <co ustaw> <co default> <nazwa_zmiennej> [komunikat]
  61 # proc_net ipv4/ip_forward start 1         0            IPV4_FORWARDING  "IPv4 forwarding"
  62 #
  63 # wy¶wietli siê komunikat "Setting IPv4 forwarding to 1"
  64 # je¶li nie podano komunikatu nic nie jest wy¶wietlane
  65
  66 proc_net()
  67 {
  68 WHAT="$1"
  69 TODO="$2"
  70 SET="$3"
  71 DEF="$4"
  72 VAR="$5"
  73 MESSAGE="$6"
  74 eval VARD=\$${VAR}
  75
  76 if [ -n "$VARD" ] && [ -e /proc/sys/net/$WHAT ]; then
  77         if [ "$TODO" == "start" ]; then
  78                 [ "$VARD" == "no" -a "$SET" == "1" ] && SET="(($SET - 1))"
  79                 [ "$VARD" == "yes" -a "$SET" == "0" ] && SET="(($SET + 1))"
  80                 if [ -n "$MESSAGE" ]; then
  81                         show "Setting $MESSAGE to $SET"; busy
  82                         if (echo "$SET" > /proc/sys/net/$WHAT) 2> /dev/null; then
  83                                 deltext; ok
  84                         else
  85                                 deltext; fail
  86                         fi
  87                 else
  88                         echo "$SET" > /proc/sys/net/$WHAT
  89                 fi
  90         elif [ "$TODO" == "stop" ]; then
  91                 if [ -n "$MESSAGE" ]; then
  92                         show "Setting $MESSAGE to $DEF"; busy
  93                         if (echo "$DEF" > /proc/sys/net/$WHAT) 2> /dev/null; then
  94                                 deltext; ok
  95                         else
  96                                 deltext; fail
  97                         fi
  98                 fi
  99         fi
 100 fi
 101 }
 102
 103 ipv4_dynamic_ip_patch()
 104 {
 105 if [ "$IPV4_DYNAMIC_IP_PATCH" != "default" -a -n "$IPV4_DYNAMIC_IP_PATCH" ] || [ ! -e /proc/sys/net/ipv4/ip_dynaddr ]; then
 106
 107 case "$IPV4_DYNAMIC_IP_PATCH_VALUE" in
 108         [1-9])  ;;
 109         *)      IPV4_DYNAMIC_IP_PATCH_VALUE=7 ;;
 110 esac
 111
 112 if [ "$IPV4_DYNAMIC_IP_PATCH" == "yes" ] && [ "$1" == "on" ]; then
 113 show Enabling dynamic IP patch; busy
 114 if echo $IPV4_DYNAMIC_IP_PATCH_VALUE > /proc/sys/net/ipv4/ip_dynaddr; then deltext; ok; else deltext; fail; fi
 115 else
 116 show Diabling dynamic IP patch; busy
 117 if echo 0 > /proc/sys/net/ipv4/ip_dynaddr; then deltext; ok; else deltext; fail; fi
 118 fi
 119
 120 fi
 121 }
 122
 123 ipv4_local_port_range()
 124 {
 125 if [ "$IPV4_LOCAL_PORT_RANGE" != "default" -a -n "$IPV4_LOCAL_PORT_RANGE" ] || [ ! -e /proc/sys/net/ipv4/ip_local_port_range ]; then
 126
 127 if [ "$IPV4_LOCAL_PORT_RANGE" == "yes" ] && [ "$1" == "on" ]; then
 128 show Setting local port range; busy
 129 if echo "$IPV4_LOCAL_PORT_RANGE" > /proc/sys/net/ipv4/ip_local_port_range; then deltext; ok; else deltext; fail; fi
 130 else
 131 show Setting default local port range; busy
 132 if echo "1024 4999" > /proc/sys/net/ipv4/ip_local_port_range; then deltext; ok; else deltext; fail; fi
 133 fi
 134
 135 fi
 136 }
 137
 138 ipv4_anti_spoofing()
 139 {
 140 if [ "$IPV4_ANTI_SPOOFING" != "default" -a -n "$IPV4_ANTI_SPOOFING" ] || [ ! -e /proc/sys/net/ipv4/conf/all/rp_filter ]; then
 141
 142 if [ "$IPV4_ANTI_SPOOFING" == "yes" ] && [ "$1" == "on" ]; then
 143 show Setting up IP spoofing protection; busy
 144 if (for f in /proc/sys/net/ipv4/conf/*/rp_filter; do echo 1 > $f; done); then deltext; ok; else deltext; fail; fi
 145 else
 146 show Setting down IP spoofing protection; busy
 147 if (for f in /proc/sys/net/ipv4/conf/*/rp_filter; do echo 0 > $f; done); then deltext; ok; else deltext; fail; fi
 148 fi
 149
 150 fi
 151 }
 152
 153 # Koniecznie trzeba to usprawnic
 154 modprobe_net()
 155 {
 156 [ "$IPV6_NETWORKING" == "yes" ] && modprobe net-pf-10 2> /dev/null
 157 modprobe ipip ip_gre 2> /dev/null
 158 }
 159
 160 #
 161 # folowing function calculates network prefix from given network mask
 162 # (c) 1999 Grzegorz Stanislawski <stangrze@open.net.pl>
 163 #
 164 calcprefix() {
 165 local OISF len olen bad prefix
 166  OISF=$IFS
 167  IFS="."
 168  prefix=0
 169  olen=8
 170  bad=0
 171  for i in $1
 172  do len=0
 173  case $i in
 174   255)   len=8 ;;
 175   254)   len=7 ;;
 176   252)   len=6 ;;
 177   248)   len=5 ;;
 178   240)   len=4 ;;
 179   224)   len=3 ;;
 180   192)   len=2 ;;
 181   128)   len=1 ;;
 182   0)     len=0 ;;
 183   *)     len=300 ;;
 184  esac
 185  if [ "$len" -gt "$olen" ] ; then bad=1; fi
 186  prefix=`expr $prefix + $len`
 187  olen=$len
 188  done
 189  IFS=$OIFS
 190  if [ "$bad" == "0" ]; then
 191  echo "$prefix"
 192  else
 193  echo "32"
 194  fi
 195  return
 196 }
 197 #
 198 # folowing function calculates network mask from given prefix
 199 # (c) 1999 Grzegorz Stanislawski <stangrze@open.net.pl>
 200 #
 201 calcnetmask() {
 202 local prefix a MASK
 203 MASK=""
 204 if [ "`echo "${1}" | grep "^[0-9]"`" == "" ]; then
 205         prefix=32
 206 else
 207         typeset -i prefix=$1
 208 fi
 209 for i in 1 2 3 4
 210  do
 211   case $prefix in
 212    7) a=254 ;;
 213    6) a=252 ;;
 214    5) a=248 ;;
 215    4) a=240 ;;
 216    3) a=224 ;;
 217    2) a=192 ;;
 218    1) a=128 ;;
 219    *)
 220       if [ $prefix -ge 8 ]; then a=255; fi
 221       if [ $prefix -le 0 ]; then a=0; fi
 222       ;;
 223   esac
 224   prefix="`expr $prefix - 8`"
 225   if [ -z "$MASK" ]
 226    then MASK=$a
 227    else MASK=$MASK.$a
 228   fi
 229  done
 230 echo $MASK
 231 return
 232 }
 233