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 alias debug=${DEBUG:-:}
   6
   7 # valid interface?
   8 if_valid () (
   9   ifconfig "$1" >&- 2>&- ||
  10   [ "${1%%[0-9]}" = "br" ] ||
  11   {
  12     [ "${1%%[0-9]*}" = "vlan" ] && (
  13       i=${1#vlan}
  14       hwname=$(nvram get vlan${i}hwname)
  15       hwaddr=$(nvram get ${hwname}macaddr)
  16       [ -z "$hwaddr" ] && return 1
  17
  18       vif=$(ifconfig -a | awk '/^eth.*'$hwaddr'/ {print $1; exit}' IGNORECASE=1)
  19       debug "# vlan$i => $vif"
  20
  21       $DEBUG ifconfig $vif up
  22       $DEBUG vconfig add $vif $i 2>&-
  23     )
  24   } ||
  25   { debug "# missing interface '$1' ignored"; false; }
  26 )
  27
  28 do_ifup() {
  29         if_proto=$(nvram get ${2}_proto)
  30         if=$(nvram get ${2}_ifname)
  31         [ "${if%%[0-9]}" = "ppp" ] && if=$(nvram get ${2}_device)
  32
  33         pidfile=/var/run/${if}.pid
  34         [ -f $pidfile ] && $DEBUG kill $(cat $pidfile)
  35
  36         case "$1" in
  37         static)
  38                 ip=$(nvram get ${2}_ipaddr)
  39                 netmask=$(nvram get ${2}_netmask)
  40                 gateway=$(nvram get ${2}_gateway)
  41                 mtu=$(nvram get ${2}_mtu)
  42                 static_route=$(nvram get ${2}_static_route)
  43
  44                 $DEBUG ifconfig $if $ip ${netmask:+netmask $netmask} ${mtu:+mtu $(($mtu))} broadcast + up
  45                 ${gateway:+$DEBUG route add default gw $gateway}
  46
  47                 [ -f /tmp/resolv.conf.auto ] || {
  48                         debug "# --- creating /tmp/resolv.conf.auto ---"
  49                         for dns in $(nvram get ${2}_dns); do
  50                                 echo "nameserver $dns" >> /tmp/resolv.conf.auto
  51                         done
  52                 }
  53
  54                 [ -n "$static_route" ] && {
  55                         for route in $static_route; do {
  56                         eval "set $(echo $route | sed 's/:/ /g')"
  57                                 if [ "$2" = "255.255.255.255" ]; then
  58                                         opt="-host"
  59                                 fi
  60                                 $DEBUG route add ${opt:-"-net"} $1 netmask $2 gw $3 metric $4
  61                         } done
  62                 }
  63
  64                 env -i ACTION="ifup" INTERFACE="${2}" PROTO=static /sbin/hotplug "iface" &
  65         ;;
  66         dhcp*)
  67                 DHCP_IP=$(nvram get ${2}_ipaddr)
  68                 DHCP_NETMASK=$(nvram get ${2}_netmask)
  69                 mtu=$(nvram get ${2}_mtu)
  70                 $DEBUG ifconfig $if $DHCP_IP ${DHCP_NETMASK:+netmask $DHCP_NETMASK} ${mtu:+mtu $(($mtu))} broadcast + up
  71
  72                 DHCP_ARGS="-i $if ${DHCP_IP:+-r $DHCP_IP} -b -p $pidfile -t 0"
  73                 DHCP_HOSTNAME=$(nvram get ${2}_hostname)
  74                 DHCP_HOSTNAME=${DHCP_HOSTNAME%%.*}
  75                 [ -z $DHCP_HOSTNAME ] || DHCP_ARGS="$DHCP_ARGS -H $DHCP_HOSTNAME"
  76                 [ "$if_proto" = "pptp" ] && DHCP_ARGS="$DHCP_ARGS -n -q" || DHCP_ARGS="$DHCP_ARGS -R &"
  77                 [ -r $pidfile ] && oldpid=$(cat $pidfile 2>&-)
  78                 ${DEBUG:-eval} "udhcpc $DHCP_ARGS"
  79                 [ -n "$oldpid" ] && pidof udhcpc | grep "$oldpid" >&- 2>&- && {
  80                         sleep 1
  81                         kill -9 $oldpid
  82                 }
  83                 # hotplug events are handled by /usr/share/udhcpc/default.script
  84         ;;
  85         none|"")
  86         ;;
  87         *)
  88                 [ -x "/sbin/ifup.$1" ] && { $DEBUG /sbin/ifup.$1 ${2}; exit; }
  89                 echo "### ifup ${2}: ignored ${2}_proto=\"$1\" (not supported)"
  90         ;;
  91         esac
  92 }
  93
  94 # newline
  95 N="
  96 "
  97
  98 _C=0
  99
 100 hotplug_dev() {
 101         env -i ACTION=$1 INTERFACE=$2 /sbin/hotplug net
 102 }
 103
 104 append() {
 105         local var="$1"
 106         local value="$2"
 107         local sep="${3:- }"
 108
 109         eval "export -n -- \"$var=\${$var:+\${$var}\${value:+\$sep}}\$value\""
 110 }
 111
 112 reset_cb() {
 113         config_cb() { return 0; }
 114         option_cb() { return 0; }
 115 }
 116 reset_cb
 117
 118 config () {
 119         local cfgtype="$1"
 120         local name="$2"
 121
 122         CONFIG_NUM_SECTIONS=$(($CONFIG_NUM_SECTIONS + 1))
 123         name="${name:-cfg$CONFIG_NUM_SECTIONS}"
 124         append CONFIG_SECTIONS "$name"
 125         config_cb "$cfgtype" "$name"
 126         CONFIG_SECTION="$name"
 127         export -n "CONFIG_${CONFIG_SECTION}_TYPE=$cfgtype"
 128 }
 129
 130 option () {
 131         local varname="$1"; shift
 132         local value="$*"
 133
 134         export -n "CONFIG_${CONFIG_SECTION}_${varname}=$value"
 135         option_cb "$varname" "$*"
 136 }
 137
 138 config_rename() {
 139         local OLD="$1"
 140         local NEW="$2"
 141         local oldvar
 142         local newvar
 143
 144         [ "$OLD" -a "$NEW" ] || return
 145         for oldvar in `set | grep ^CONFIG_${OLD}_ | \
 146                 sed -e 's/\(.*\)=.*$/\1/'` ; do
 147                 newvar="CONFIG_${NEW}_${oldvar##CONFIG_${OLD}_}"
 148                 eval "export -n \"$newvar=\${$oldvar}\""
 149                 unset "$oldvar"
 150         done
 151         CONFIG_SECTIONS="$(echo " $CONFIG_SECTIONS " | sed -e "s, $OLD , $NEW ,")"
 152
 153         [ "$CONFIG_SECTION" = "$OLD" ] && CONFIG_SECTION="$NEW"
 154 }
 155
 156 config_unset() {
 157         config_set "$1" "$2" ""
 158 }
 159
 160 config_clear() {
 161         local SECTION="$1"
 162         local oldvar
 163
 164         CONFIG_SECTIONS="$(echo " $CONFIG_SECTIONS " | sed -e "s, $OLD , ,")"
 165         CONFIG_SECTIONS="${SECTION:+$CONFIG_SECTIONS}"
 166
 167         for oldvar in `set | grep ^CONFIG_${SECTION:+$SECTION_} | \
 168                 sed -e 's/\(.*\)=.*$/\1/'` ; do
 169                 unset $oldvar
 170         done
 171 }
 172
 173 config_load() {
 174         local file="/etc/config/$1"
 175         _C=0
 176         CONFIG_SECTIONS=
 177         CONFIG_NUM_SECTIONS=0
 178         CONFIG_SECTION=
 179
 180         [ -e "$file" ] && {
 181                 . $file
 182         } || return 1
 183
 184         ${CONFIG_SECTION:+config_cb}
 185 }
 186
 187 config_get() {
 188         case "$3" in
 189                 "") eval "echo \"\${CONFIG_${1}_${2}}\"";;
 190                 *)  eval "export -n -- \"$1=\${CONFIG_${2}_${3}}\"";;
 191         esac
 192 }
 193
 194 config_set() {
 195         local section="$1"
 196         local option="$2"
 197         local value="$3"
 198         export -n "CONFIG_${section}_${option}=$value"
 199 }
 200
 201 config_foreach() {
 202         local function="$1"
 203         local section
 204
 205         [ -z "$CONFIG_SECTIONS" ] && return 0
 206         for section in ${CONFIG_SECTIONS}; do
 207                 eval "$function \"\$section\""
 208         done
 209 }
 210
 211 load_modules() {
 212         cd /etc/modules.d
 213         sed 's/^[^#]/insmod &/' $* | ash 2>&- || :
 214 }
 215
 216 include() {
 217         local file
 218
 219         for file in $(ls $1/*.sh 2>/dev/null); do
 220                 . $file
 221         done
 222 }
 223
 224 find_mtd_part() {
 225         local PART="$(grep "\"$1\"" /proc/mtd | awk -F: '{print $1}')"
 226
 227         PART="${PART##mtd}"
 228         echo "${PART:+/dev/mtdblock/$PART}"
 229 }
 230
 231 strtok() { # <string> { <variable> [<separator>] ... }
 232         local tmp
 233         local val="$1"
 234         local count=0
 235
 236         shift
 237
 238         while [ $# -gt 1 ]; do
 239                 tmp="${val%%$2*}"
 240
 241                 [ "$tmp" = "$val" ] && break
 242
 243                 val="${val#$tmp$2}"
 244
 245                 export -n "$1=$tmp"; count=$((count+1))
 246                 shift 2
 247         done
 248
 249         if [ $# -gt 0 -a "$val" ]; then
 250                 export -n "$1=$val"; count=$((count+1))
 251         fi
 252
 253         return $count
 254 }
 255
 256 set_led() {
 257         local led="$1"
 258         local state="$2"
 259         [ -f "/proc/diag/led/$1" ] && echo "$state" > "/proc/diag/led/$1"
 260 }
 261
 262 set_state() {
 263         case "$1" in
 264                 preinit)
 265                         set_led dmz 1
 266                         set_led diag 1
 267                         set_led power 0
 268                 ;;
 269                 failsafe)
 270                         set_led diag f
 271                         set_led power f
 272                         set_led dmz f
 273                 ;;
 274                 done)
 275                         set_led dmz 0
 276                         set_led diag 0
 277                         set_led power 1
 278                 ;;
 279         esac
 280 }