hooks/ipv4-static

   1 #!/bin/sh
   2 ########################################################################
   3 # Begin $NETWORK_DEVICES/services/ipv4-static
   4 #
   5 # Description : IPV4 Static Boot Script
   6 #
   7 # Authors     : Nathan Coulson - nathan@linuxfromscratch.org
   8 #               Kevin P. Fleming - kpfleming@linuxfromscratch.org
   9 #
  10 # Version     : 00.00
  11 #
  12 # Notes       :
  13 #
  14 ########################################################################
  15
  16 . /lib/network/hook-header
  17
  18 HOOK_NAME="ipv4-static"
  19 HOOK_TYPE="zone"
  20
  21 function check_config() {
  22         args=
  23         if [ -z "${IP}" ]; then
  24                 log_failure_msg "IP variable missing, cannot continue."
  25                 exit ${EXIT_CONF_ERROR}
  26         fi
  27
  28         if [ -z "${PREFIX}" -a -z "${PEER}" ]; then
  29                 log_warning_msg "PREFIX variable missing, assuming 24."
  30                 PREFIX=24
  31                 args="${args} ${IP}/${PREFIX}"
  32         elif [ -n "${PREFIX}" -a -n "${PEER}" ]; then
  33                 log_failure_msg "PREFIX and PEER both specified, cannot continue."
  34                 exit ${EXIT_CONF_ERROR}
  35         elif [ -n "${PREFIX}" ]; then
  36                 args="${args} ${IP}/${PREFIX}"
  37         elif [ -n "${PEER}" ]; then
  38                 args="${args} ${IP} peer ${PEER}"
  39         fi
  40
  41         if [ -n "${BROADCAST}" ]; then
  42                 args="${args} broadcast ${BROADCAST}"
  43         fi
  44
  45         if [ -n "${SOURCE}" ]; then
  46                 args="${args} src ${SOURCE}"
  47         fi
  48 }
  49
  50 case "${action}" in
  51         help)
  52                 ;;
  53
  54     info)
  55         echo "HOOK_NAME=$HOOK_NAME"
  56         echo "HOOK_TYPE=$HOOK_TYPE"
  57         ;;
  58
  59         status)
  60                 check_config
  61                 echo -e "#  ${CLR_BOLD_CYN}IPv4 static: ${IP}/${PREFIX}${NORMAL}"
  62                 if [ -n "${GATEWAY}" ]; then
  63                         echo    "#    Gateway: ${GATEWAY}"
  64                         echo -n "#      Reachable: "
  65                         if ping -c1 -w1 -I ${zone} ${GATEWAY} &>/dev/null; then
  66                                 echo -e "${CLR_BOLD_GRN}yes${NORMAL}"
  67                         else
  68                                 echo -e "${CLR_BOLD_RED}no${NORMAL}"
  69                         fi
  70                 fi
  71                 ip addr show ${zone} | grep "inet " | fgrep -q "${IP}/${PREFIX}"
  72                 exit ${?}
  73                 ;;
  74
  75         pre-up)
  76                 ;;
  77
  78         post-up)
  79                 check_config
  80                 if ! device_has_ipv4 ${zone} ${IP}; then
  81                         MESSAGE="Adding IPv4 address ${IP} to zone ${zone} interface..."
  82                         ip addr add ${args} dev ${zone}
  83                         evaluate_retval
  84                 fi
  85
  86                 if [ -n "${GATEWAY}" ]; then
  87                         if ip route | grep -q default; then
  88                                 log_warning_msg "Gateway already setup; skipping." ${WARNING}
  89                         else
  90                                 MESSAGE="Setting up default gateway..."
  91                                 ip route add default via ${GATEWAY} dev ${zone}
  92                                 evaluate_retval
  93                          fi
  94                 fi
  95         ;;
  96
  97         pre-down)
  98                 check_config
  99                 if [ -n "${GATEWAY}" ]; then
 100                         MESSAGE="Removing default gateway..."
 101                         ip route del default
 102                         evaluate_retval
 103                 fi
 104
 105                 if device_has_ipv4 ${zone} ${IP}; then
 106                         MESSAGE="Removing IPv4 address ${IP} from zone ${zone}..."
 107                         ip addr del ${args} dev ${zone}
 108                         evaluate_retval
 109                 fi
 110                 ;;
 111
 112         post-down)
 113                 ;;
 114
 115         add)
 116                 while [ $# -gt 0 ]; do
 117                         case "$1" in
 118                                 --ip=*)
 119                                         IP=${1#--ip=}
 120                                         ;;
 121                                 --prefix=*)
 122                                         PREFIX=${1#--prefix=}
 123                                         ;;
 124                                 --peer=*)
 125                                         PEER=${1#--peer=}
 126                                         ;;
 127                                 --broadcast=*)
 128                                         BROADCAST=${1#--broadcast=}
 129                                         ;;
 130                                 --source=*)
 131                                         SOURCE=${1#--source=}
 132                                         ;;
 133                                 --gateway=*)
 134                                         GATEWAY=${1#--gateway=}
 135                                         ;;
 136                                 *)
 137                                         echo "Unknown option: $1" >&2
 138                                         exit 1
 139                                         ;;
 140                         esac
 141                         shift
 142                 done
 143                 #check_config
 144                 cat <<EOF >${CONFIG_ZONES}/${zone}/ipv4-static_$IP
 145 HOOK="${HOOK_NAME}"
 146 IP="${IP}"
 147 PREFIX="${PREFIX}"
 148 PEER="${PEER}"
 149 BROADCAST="${BROADCAST}"
 150 SOURCE="${SOURCE}"
 151 GATEWAY="${GATEWAY}"
 152 EOF
 153                 [ "$?" = "0" ] && exit ${EXIT_OK} || exit ${EXIT_ERROR}
 154                 ;;
 155
 156         rem)
 157                 ;;
 158
 159         discover)
 160                 exit ${EXIT_ERROR}
 161                 ;;
 162
 163         *)
 164                 echo "Usage: ${0} {config|pre-up|post-up|pre-down|post-down|status} [interface]"
 165                 exit ${EXIT_ERROR}
 166         ;;
 167 esac
 168
 169 # End $NETWORK_DEVICES/services/ipv4-static