openwrt/package/base-files/default/etc/functions.sh

   1 #!/bin/sh
   2 # Copyright (C) 2006 OpenWrt.org
   3 # Copyright (C) 2006 Fokus Fraunhofer <carsten.tittel@fokus.fraunhofer.de>
   4
   5 # newline
   6 N="
   7 "
   8
   9 _C=0
  10
  11 alias debug=${DEBUG:-:}
  12
  13 # valid interface?
  14 if_valid () (
  15   ifconfig "$1" >&- 2>&- ||
  16   [ "${1%%[0-9]}" = "br" ] ||
  17   {
  18     [ "${1%%[0-9]*}" = "vlan" ] && (
  19       i=${1#vlan}
  20       hwname=$(nvram get vlan${i}hwname)
  21       hwaddr=$(nvram get ${hwname}macaddr)
  22       [ -z "$hwaddr" ] && return 1
  23
  24       vif=$(ifconfig -a | awk '/^eth.*'$hwaddr'/ {print $1; exit}' IGNORECASE=1)
  25       debug "# vlan$i => $vif"
  26
  27       $DEBUG ifconfig $vif up
  28       $DEBUG vconfig add $vif $i 2>&-
  29     )
  30   } ||
  31   { debug "# missing interface '$1' ignored"; false; }
  32 )
  33
  34 do_ifup() {
  35         if_proto=$(nvram get ${2}_proto)
  36         if=$(nvram get ${2}_ifname)
  37         [ "${if%%[0-9]}" = "ppp" ] && if=$(nvram get ${2}_device)
  38
  39         pidfile=/var/run/${if}.pid
  40         [ -f $pidfile ] && $DEBUG kill $(cat $pidfile)
  41
  42         case "$1" in
  43         static)
  44                 ip=$(nvram get ${2}_ipaddr)
  45                 netmask=$(nvram get ${2}_netmask)
  46                 gateway=$(nvram get ${2}_gateway)
  47                 mtu=$(nvram get ${2}_mtu)
  48                 static_route=$(nvram get ${2}_static_route)
  49
  50                 $DEBUG ifconfig $if $ip ${netmask:+netmask $netmask} ${mtu:+mtu $(($mtu))} broadcast + up
  51                 ${gateway:+$DEBUG route add default gw $gateway}
  52
  53                 [ -n "$static_route" ] && {
  54                         for route in $static_route; do {
  55                         eval "set $(echo $route | sed 's/:/ /g')"
  56                                 if [ "$2" = "255.255.255.255" ]; then
  57                                         opt="-host"
  58                                 fi
  59                                 $DEBUG route add ${opt:-"-net"} $1 netmask $2 gw $3 metric $4
  60                         } done
  61                 }
  62
  63                 [ -f /tmp/resolv.conf.auto ] || {
  64                         debug "# --- creating /tmp/resolv.conf.auto ---"
  65                         for dns in $(nvram get ${2}_dns); do
  66                                 echo "nameserver $dns" >> /tmp/resolv.conf.auto
  67                         done
  68                 }
  69
  70                 env -i ACTION="ifup" INTERFACE="${2}" PROTO=static /sbin/hotplug "iface" &
  71         ;;
  72         dhcp*)
  73                 DHCP_IP=$(nvram get ${2}_ipaddr)
  74                 DHCP_NETMASK=$(nvram get ${2}_netmask)
  75                 mtu=$(nvram get ${2}_mtu)
  76                 $DEBUG ifconfig $if $DHCP_IP ${DHCP_NETMASK:+netmask $DHCP_NETMASK} ${mtu:+mtu $(($mtu))} broadcast + up
  77
  78                 DHCP_ARGS="-i $if ${DHCP_IP:+-r $DHCP_IP} -b -p $pidfile"
  79                 DHCP_HOSTNAME=$(nvram get ${2}_hostname)
  80                 DHCP_HOSTNAME=${DHCP_HOSTNAME%%.*}
  81                 [ -z $DHCP_HOSTNAME ] || DHCP_ARGS="$DHCP_ARGS -H $DHCP_HOSTNAME"
  82                 [ "$if_proto" = "pptp" ] && DHCP_ARGS="$DHCP_ARGS -n -q" || DHCP_ARGS="$DHCP_ARGS -R &"
  83                 [ -r $pidfile ] && oldpid=$(cat $pidfile 2>&-)
  84                 ${DEBUG:-eval} "udhcpc $DHCP_ARGS"
  85                 [ -n "$oldpid" ] && pidof udhcpc | grep "$oldpid" >&- 2>&- && {
  86                         sleep 1
  87                         kill -9 $oldpid
  88                 }
  89                 # hotplug events are handled by /usr/share/udhcpc/default.script
  90         ;;
  91         none|"")
  92         ;;
  93         *)
  94                 [ -x "/sbin/ifup.$1" ] && { $DEBUG /sbin/ifup.$1 ${2}; exit; }
  95                 echo "### ifup ${2}: ignored ${2}_proto=\"$1\" (not supported)"
  96         ;;
  97         esac
  98 }
  99
 100 append() {
 101         local var="$1"
 102         local value="$2"
 103         local sep="${3:- }"
 104         eval "export ${var}=\"\${${var}:+\${${var}}${value:+$sep}}\$value\""
 105 }
 106
 107 reset_cb() {
 108         config_cb() {
 109                 return 0
 110         }
 111         option_cb() {
 112                 return 0
 113         }
 114 }
 115 reset_cb
 116
 117 config () {
 118     local cfgtype="$1"
 119     local name="$2"
 120     _C=$(($_C + 1))
 121     name="${name:-cfg${_C}}"
 122     config_cb "$cfgtype" "$name"
 123     export CONFIG_SECTION="$name"
 124     export CONFIG_${CONFIG_SECTION}_TYPE="$cfgtype"
 125 }
 126
 127 option () {
 128         local varname="$1"; shift
 129         export CONFIG_${CONFIG_SECTION}_${varname}="$*"
 130         option_cb "$varname" "$*"
 131 }
 132
 133 config_clear() {
 134         [ -z "$CONFIG_SECTION" ] && return
 135         for oldsetting in `set | grep ^CONFIG_${CONFIG_SECTION}_ | \
 136                 sed -e 's/\(.*\)=.*$/\1/'` ; do
 137                 unset $oldsetting
 138         done
 139         unset CONFIG_SECTION
 140 }
 141
 142 config_load() {
 143         CONFIG_SECTION=
 144         local DIR="./"
 145         _C=0
 146         [ \! -e "$1" -a -e "/etc/config/$1" ] && {
 147                 DIR="/etc/config/"
 148         }
 149         [ -e "$DIR$1" ] && {
 150                 CONFIG_FILENAME="$DIR$1"
 151                 . ${CONFIG_FILENAME}
 152         } || return 1
 153         ${CD:+cd -} >/dev/null
 154         ${CONFIG_SECTION:+config_cb}
 155 }
 156
 157 config_get() {
 158         case "$3" in
 159                 "") eval "echo \${CONFIG_${1}_${2}}";;
 160                 *) eval "$1=\"\${CONFIG_${2}_${3}}\"";;
 161         esac
 162 }
 163
 164 config_set() {
 165         export CONFIG_${1}_${2}="${3}"
 166 }
 167
 168 include() {
 169         for file in $(ls /lib/$1/*.sh 2>/dev/null); do
 170                 . $file
 171         done
 172 }
 173
 174 set_led() {
 175         local led="$1"
 176         local state="$2"
 177         [ -f "/proc/diag/led/$1" ] && echo "$state" > "/proc/diag/led/$1"
 178 }
 179
 180 set_state() {
 181         case "$1" in
 182                 preinit)
 183                         set_led dmz 1
 184                         set_led diag 1
 185                         set_led power 0
 186                 ;;
 187                 failsafe)
 188                         set_led diag f
 189                         set_led power f
 190                         set_led dmz f
 191                 ;;
 192                 done)
 193                         set_led dmz 0
 194                         set_led diag 0
 195                         set_led power 1
 196                 ;;
 197         esac
 198 }