package/base-files/files/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 # newline
   8 N="
   9 "
  10
  11 _C=0
  12 NO_EXPORT=1
  13
  14 hotplug_dev() {
  15         env -i ACTION=$1 INTERFACE=$2 /sbin/hotplug-call net
  16 }
  17
  18 append() {
  19         local var="$1"
  20         local value="$2"
  21         local sep="${3:- }"
  22
  23         eval "export ${NO_EXPORT:+-n} -- \"$var=\${$var:+\${$var}\${value:+\$sep}}\$value\""
  24 }
  25
  26 reset_cb() {
  27         config_cb() { return 0; }
  28         option_cb() { return 0; }
  29 }
  30 reset_cb
  31
  32 config () {
  33         local cfgtype="$1"
  34         local name="$2"
  35
  36         export ${NO_EXPORT:+-n} CONFIG_NUM_SECTIONS=$(($CONFIG_NUM_SECTIONS + 1))
  37         name="${name:-cfg$CONFIG_NUM_SECTIONS}"
  38         append CONFIG_SECTIONS "$name"
  39         [ -n "$NO_CALLBACK" ] || config_cb "$cfgtype" "$name"
  40         export ${NO_EXPORT:+-n} CONFIG_SECTION="$name"
  41         export ${NO_EXPORT:+-n} "CONFIG_${CONFIG_SECTION}_TYPE=$cfgtype"
  42 }
  43
  44 option () {
  45         local varname="$1"; shift
  46         local value="$*"
  47
  48         export ${NO_EXPORT:+-n} "CONFIG_${CONFIG_SECTION}_${varname}=$value"
  49         [ -n "$NO_CALLBACK" ] || option_cb "$varname" "$*"
  50 }
  51
  52 config_rename() {
  53         local OLD="$1"
  54         local NEW="$2"
  55         local oldvar
  56         local newvar
  57
  58         [ -n "$OLD" -a -n "$NEW" ] || return
  59         for oldvar in `set | grep ^CONFIG_${OLD}_ | \
  60                 sed -e 's/\(.*\)=.*$/\1/'` ; do
  61                 newvar="CONFIG_${NEW}_${oldvar##CONFIG_${OLD}_}"
  62                 eval "export ${NO_EXPORT:+-n} \"$newvar=\${$oldvar}\""
  63                 unset "$oldvar"
  64         done
  65         export ${NO_EXPORT:+-n} CONFIG_SECTIONS="$(echo " $CONFIG_SECTIONS " | sed -e "s, $OLD , $NEW ,")"
  66
  67         [ "$CONFIG_SECTION" = "$OLD" ] && export ${NO_EXPORT:+-n} CONFIG_SECTION="$NEW"
  68 }
  69
  70 config_unset() {
  71         config_set "$1" "$2" ""
  72 }
  73
  74 config_clear() {
  75         local SECTION="$1"
  76         local oldvar
  77
  78         export ${NO_EXPORT:+-n} CONFIG_SECTIONS="$(echo " $CONFIG_SECTIONS " | sed -e "s, $OLD , ,")"
  79         export ${NO_EXPORT:+-n} CONFIG_SECTIONS="${SECTION:+$CONFIG_SECTIONS}"
  80
  81         for oldvar in `set | grep ^CONFIG_${SECTION:+${SECTION}_} | \
  82                 sed -e 's/\(.*\)=.*$/\1/'` ; do
  83                 unset $oldvar
  84         done
  85 }
  86
  87 config_load() {
  88         local cfg
  89         local uci
  90         local PACKAGE="$1"
  91
  92         case "$PACKAGE" in
  93                 /*)     cfg="$PACKAGE"
  94                         uci=""
  95                 ;;
  96                 *)      cfg="$UCI_ROOT/etc/config/$PACKAGE"
  97                         uci="/tmp/.uci/${PACKAGE}"
  98                 ;;
  99         esac
 100
 101         [ -e "$cfg" ] || cfg=""
 102         [ -e "$uci" ] || uci=""
 103
 104         # no config
 105         [ -z "$cfg" -a -z "$uci" ] && return 1
 106
 107         _C=0
 108         export ${NO_EXPORT:+-n} CONFIG_SECTIONS=
 109         export ${NO_EXPORT:+-n} CONFIG_NUM_SECTIONS=0
 110         export ${NO_EXPORT:+-n} CONFIG_SECTION=
 111
 112         ${cfg:+. "$cfg"}
 113         ${uci:+. "$uci"}
 114
 115         ${CONFIG_SECTION:+config_cb}
 116 }
 117
 118 config_get() {
 119         case "$3" in
 120                 "") eval "echo \"\${CONFIG_${1}_${2}}\"";;
 121                 *)  eval "export ${NO_EXPORT:+-n} -- \"$1=\${CONFIG_${2}_${3}}\"";;
 122         esac
 123 }
 124
 125 # config_get_bool <variable> <section> <option> [<default>]
 126 config_get_bool() {
 127         local _tmp
 128         config_get "_tmp" "$2" "$3"
 129         case "$_tmp" in
 130                 1|on|true|enabled) export ${NO_EXPORT:+-n} "$1=1";;
 131                 0|off|false|disabled) export ${NO_EXPORT:+-n} "$1=0";;
 132                 *) eval "$1=$4";;
 133         esac
 134 }
 135
 136 config_set() {
 137         local section="$1"
 138         local option="$2"
 139         local value="$3"
 140         local old_section="$CONFIG_SECTION"
 141
 142         CONFIG_SECTION="$section"
 143         option "$option" "$value"
 144         CONFIG_SECTION="$old_section"
 145 }
 146
 147 config_foreach() {
 148         local function="$1"
 149         [ "$#" -ge 1 ] && shift
 150         local type="$1"
 151         [ "$#" -ge 1 ] && shift
 152         local section cfgtype
 153
 154         [ -z "$CONFIG_SECTIONS" ] && return 0
 155         for section in ${CONFIG_SECTIONS}; do
 156                 config_get cfgtype "$section" TYPE
 157                 [ -n "$type" -a "x$cfgtype" != "x$type" ] && continue
 158                 eval "$function \"\$section\" \"\$@\""
 159         done
 160 }
 161
 162 load_modules() {
 163         [ -d /etc/modules.d ] && {
 164                 cd /etc/modules.d
 165                 sed 's/^[^#]/insmod &/' $* | ash 2>&- || :
 166         }
 167 }
 168
 169 include() {
 170         local file
 171
 172         for file in $(ls $1/*.sh 2>/dev/null); do
 173                 . $file
 174         done
 175 }
 176
 177 find_mtd_part() {
 178         local PART="$(grep "\"$1\"" /proc/mtd | awk -F: '{print $1}')"
 179         local PREFIX=/dev/mtdblock
 180
 181         PART="${PART##mtd}"
 182         [ -d /dev/mtdblock ] && PREFIX=/dev/mtdblock/
 183         echo "${PART:+$PREFIX$PART}"
 184 }
 185
 186 strtok() { # <string> { <variable> [<separator>] ... }
 187         local tmp
 188         local val="$1"
 189         local count=0
 190
 191         shift
 192
 193         while [ $# -gt 1 ]; do
 194                 tmp="${val%%$2*}"
 195
 196                 [ "$tmp" = "$val" ] && break
 197
 198                 val="${val#$tmp$2}"
 199
 200                 export ${NO_EXPORT:+-n} "$1=$tmp"; count=$((count+1))
 201                 shift 2
 202         done
 203
 204         if [ $# -gt 0 -a -n "$val" ]; then
 205                 export ${NO_EXPORT:+-n} "$1=$val"; count=$((count+1))
 206         fi
 207
 208         return $count
 209 }
 210
 211
 212 jffs2_mark_erase() {
 213         local part="$(find_mtd_part "$1")"
 214         [ -z "$part" ] && {
 215                 echo Partition not found.
 216                 return 1
 217         }
 218         echo -e "\xde\xad\xc0\xde" | mtd -qq write - "$1"
 219 }
 220
 221 uci_set_default() {
 222         local PACKAGE="$1"
 223         [ -e "/etc/config/$1" ] && return 0
 224         cat > "/etc/config/$1"
 225 }