add common functions for the new config file format

[openwrt.git] / package / base-files / default / etc / functions.sh

diff --git a/package/base-files/default/etc/functions.sh b/package/base-files/default/etc/functions.sh
index bc9767f..858dc28 100755 (executable)
--- a/package/base-files/default/etc/functions.sh
+++ b/package/base-files/default/etc/functions.sh
@@ -1,99 +1,63 @@
-#!/bin/ash
-. /etc/nvram.sh
-
+#!/bin/sh
 alias debug=${DEBUG:-:}
 
 # valid interface?
 if_valid () (
   ifconfig "$1" >&- 2>&- ||
   [ "${1%%[0-9]}" = "br" ] ||
-  {
-    [ "${1%%[0-9]}" = "vlan" ] && ( 
-      i=${1#vlan}
-      hwname=$(nvram get vlan${i}hwname)
-      hwaddr=$(nvram get ${hwname}macaddr)
-      [ -z "$hwaddr" ] && return 1
-
-      vif=$(ifconfig -a | awk '/^eth.*'$hwaddr'/ {print $1; exit}' IGNORECASE=1)
-      debug "# vlan$i => $vif"
-
-      $DEBUG ifconfig $vif up
-      $DEBUG vconfig add $vif $i 2>&-
-    )
-  } ||
   { debug "# missing interface '$1' ignored"; false; }
 )
 
-do_ifup() {
-       if_proto=$(nvram get ${2}_proto)
-       if=$(nvram get ${2}_ifname)
-       [ "${if%%[0-9]}" = "ppp" ] && if=$(nvram get ${if_proto}_ifname)
-       
-       pidfile=/var/run/${if}.pid
-       [ -f $pidfile ] && $DEBUG kill $(cat $pidfile)
-
-       case "$1" in
-       static)
-               ip=$(nvram get ${2}_ipaddr)
-               netmask=$(nvram get ${2}_netmask)
-               gateway=$(nvram get ${2}_gateway)
-
-               $DEBUG ifconfig $if $ip ${netmask:+netmask $netmask} broadcast + up
-               ${gateway:+$DEBUG route add default gw $gateway}
+hotplug_dev() {
+       env -i ACTION=$1 INTERFACE=$2 /sbin/hotplug net
+}
 
-               [ -f /etc/resolv.conf ] && return
+config_cb() {
+       return 0
+}
+option_cb() {
+       return 0
+}
 
-               debug "# --- creating /etc/resolv.conf ---"
-               for dns in $(nvram get ${2}_dns); do
-                       echo "nameserver $dns" >> /etc/resolv.conf
-               done
-       ;;
-       dhcp)
-               DHCP_IP=$(nvram get ${2}_ipaddr)
-               DHCP_NETMASK=$(nvram get ${2}_netmask)
-               $DEBUG ifconfig $if $ip ${netmask:+netmask $netmask} broadcast + up
+config () {
+       config_cb "$@"
+       _C=$((${_C:-0} + 1))
+       export CONFIG_SECTION="${2:-cfg${_C}}"
+       export CONFIG_${CONFIG_SECTION}_TYPE="$1"
+}
 
-               DHCP_ARGS="-i $if ${DHCP_IP:+-r $DHCP_IP} -b -p $pidfile"
-               DHCP_HOSTNAME=$(nvram get ${2}_hostname)
-               DHCP_HOSTNAME=${DHCP_HOSTNAME%%.*}
-               [ -z $DHCP_HOSTNAME ] || DHCP_ARGS="$DHCP_ARGS -H $DHCP_HOSTNAME"
-               [ "$if_proto" = "pptp" ] && DHCP_ARGS="$DHCP_ARGS -n -q" || DHCP_ARGS="$DHCP_ARGS -R &"
-               oldpid=$(cat $pidfile)
-               ${DEBUG:-eval} "udhcpc $DHCP_ARGS"
-               pidof udhcpc | grep "$oldpid" >&- 2>&- && {
-                       sleep 1
-                       kill -9 $oldpid
-               }
-       ;;
-       none|"")
-       ;;
-       *)
-               [ -x "/sbin/ifup.$1" ] && { $DEBUG /sbin/ifup.$1 ${2}; exit; }
-               echo "### ifup ${2}: ignored ${2}_proto=\"$1\" (not supported)"
-       ;;
-       esac
+option () {
+       local varname="$1" ; shift
+       export CONFIG_${CONFIG_SECTION}_${varname}="$*"
+       option_cb "$varname" "$*"
 }
 
-bitcount () {
-  local c=$1
-  echo $((
-  c=((c>> 1)&0x55555555)+(c&0x55555555),
-  c=((c>> 2)&0x33333333)+(c&0x33333333),
-  c=((c>> 4)&0x0f0f0f0f)+(c&0x0f0f0f0f),
-  c=((c>> 8)&0x00ff00ff)+(c&0x00ff00ff),
-  c=((c>>16)&0x0000ffff)+(c&0x0000ffff)
-  ))
+config_clear() {
+       [ -z "$CONFIG_SECTION" ] && return
+       for oldsetting in `set | grep ^CONFIG_${CONFIG_SECTION}_ | \
+               sed -e 's/\(.*\)=.*$/\1/'` ; do 
+               unset $oldsetting 
+       done
+       unset CONFIG_SECTION
 }
 
-valid_netmask () {
-  return $((-($1)&~$1))
+config_load() {
+       local CD=""
+       if [ \! -e "$1" -a -e "/etc/config/$1" ]; then
+               cd /etc/config && local CD=1
+       fi
+       [ -e "$1" ] && . $1
+       ${CD:+cd - >/dev/null}
+       ${CONFIG_SECTION:+config_cb}
 }
 
-ip2int () (
-  set $(echo $1 | tr '\.' ' ')
-  echo $(($1<<24|$2<<16|$3<<8|$4))
-)
+config_get() {
+       case "$3" in
+               "") eval "echo \${CONFIG_${1}_${2}}";;
+               *) eval "$1=\"\${CONFIG_${2}_${3}}\"";;
+       esac
+}
 
-int2ip () {
-  echo $(($1>>24&255)).$(($1>>16&255)).$(($1>>8&255)).$(($1&255))
+config_set() {
+       export CONFIG_${1}_${2}="${3}"
 }