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 LOAD_STATE=1
  14 LIST_SEP=" "
  15
  16 hotplug_dev() {
  17         env -i ACTION=$1 INTERFACE=$2 /sbin/hotplug-call net
  18 }
  19
  20 append() {
  21         local var="$1"
  22         local value="$2"
  23         local sep="${3:- }"
  24
  25         eval "export ${NO_EXPORT:+-n} -- \"$var=\${$var:+\${$var}\${value:+\$sep}}\$value\""
  26 }
  27
  28 list_contains() {
  29         local var="$1"
  30         local str="$2"
  31         local val
  32
  33         eval "val=\" \${$var} \""
  34         [ "${val%% $str *}" != "$val" ]
  35 }
  36
  37 list_remove() {
  38         local var="$1"
  39         local remove="$2"
  40         local val
  41
  42         eval "val=\" \${$var} \""
  43         val1="${val%% $remove *}"
  44         [ "$val1" = "$val" ] && return
  45         val2="${val##* $remove }"
  46         [ "$val2" = "$val" ] && return
  47         val="${val1## } ${val2%% }"
  48         val="${val%% }"
  49         eval "export ${NO_EXPORT:+-n} -- \"$var=\$val\""
  50 }
  51
  52 config_load() {
  53         [ -n "$IPKG_INSTROOT" ] && return 0
  54         uci_load "$@"
  55 }
  56
  57 reset_cb() {
  58         config_cb() { return 0; }
  59         option_cb() { return 0; }
  60         list_cb() { return 0; }
  61 }
  62 reset_cb
  63
  64 package() {
  65         return 0
  66 }
  67
  68 config () {
  69         local cfgtype="$1"
  70         local name="$2"
  71
  72         export ${NO_EXPORT:+-n} CONFIG_NUM_SECTIONS=$(($CONFIG_NUM_SECTIONS + 1))
  73         name="${name:-cfg$CONFIG_NUM_SECTIONS}"
  74         append CONFIG_SECTIONS "$name"
  75         [ -n "$NO_CALLBACK" ] || config_cb "$cfgtype" "$name"
  76         export ${NO_EXPORT:+-n} CONFIG_SECTION="$name"
  77         export ${NO_EXPORT:+-n} "CONFIG_${CONFIG_SECTION}_TYPE=$cfgtype"
  78 }
  79
  80 option () {
  81         local varname="$1"; shift
  82         local value="$*"
  83
  84         export ${NO_EXPORT:+-n} "CONFIG_${CONFIG_SECTION}_${varname}=$value"
  85         [ -n "$NO_CALLBACK" ] || option_cb "$varname" "$*"
  86 }
  87
  88 list() {
  89         local varname="$1"; shift
  90         local value="$*"
  91         local len
  92
  93         config_get len "$CONFIG_SECTION" "${varname}_LENGTH"
  94         len="$((${len:-0} + 1))"
  95         config_set "$CONFIG_SECTION" "${varname}_ITEM$len" "$value"
  96         config_set "$CONFIG_SECTION" "${varname}_LENGTH" "$len"
  97         append "CONFIG_${CONFIG_SECTION}_${varname}" "$value" "$LIST_SEP"
  98         list_cb "$varname" "$*"
  99 }
 100
 101 config_rename() {
 102         local OLD="$1"
 103         local NEW="$2"
 104         local oldvar
 105         local newvar
 106
 107         [ -n "$OLD" -a -n "$NEW" ] || return
 108         for oldvar in `set | grep ^CONFIG_${OLD}_ | \
 109                 sed -e 's/\(.*\)=.*$/\1/'` ; do
 110                 newvar="CONFIG_${NEW}_${oldvar##CONFIG_${OLD}_}"
 111                 eval "export ${NO_EXPORT:+-n} \"$newvar=\${$oldvar}\""
 112                 unset "$oldvar"
 113         done
 114         export ${NO_EXPORT:+-n} CONFIG_SECTIONS="$(echo " $CONFIG_SECTIONS " | sed -e "s, $OLD , $NEW ,")"
 115
 116         [ "$CONFIG_SECTION" = "$OLD" ] && export ${NO_EXPORT:+-n} CONFIG_SECTION="$NEW"
 117 }
 118
 119 config_unset() {
 120         config_set "$1" "$2" ""
 121 }
 122
 123 config_clear() {
 124         local SECTION="$1"
 125         local oldvar
 126
 127         list_remove CONFIG_SECTIONS "$SECTION"
 128         export ${NO_EXPORT:+-n} CONFIG_SECTIONS="${SECTION:+$CONFIG_SECTIONS}"
 129
 130         for oldvar in `set | grep ^CONFIG_${SECTION:+${SECTION}_} | \
 131                 sed -e 's/\(.*\)=.*$/\1/'` ; do
 132                 unset $oldvar
 133         done
 134 }
 135
 136 config_get() {
 137         case "$3" in
 138                 "") eval "echo \"\${CONFIG_${1}_${2}}\"";;
 139                 *)  eval "export ${NO_EXPORT:+-n} -- \"$1=\${CONFIG_${2}_${3}}\"";;
 140         esac
 141 }
 142
 143 # config_get_bool <variable> <section> <option> [<default>]
 144 config_get_bool() {
 145         local _tmp
 146         config_get "_tmp" "$2" "$3"
 147         case "$_tmp" in
 148                 1|on|true|enabled) export ${NO_EXPORT:+-n} "$1=1";;
 149                 0|off|false|disabled) export ${NO_EXPORT:+-n} "$1=0";;
 150                 *) eval "$1=$4";;
 151         esac
 152 }
 153
 154 config_set() {
 155         local section="$1"
 156         local option="$2"
 157         local value="$3"
 158         local old_section="$CONFIG_SECTION"
 159
 160         CONFIG_SECTION="$section"
 161         option "$option" "$value"
 162         CONFIG_SECTION="$old_section"
 163 }
 164
 165 config_foreach() {
 166         local function="$1"
 167         [ "$#" -ge 1 ] && shift
 168         local type="$1"
 169         [ "$#" -ge 1 ] && shift
 170         local section cfgtype
 171
 172         [ -z "$CONFIG_SECTIONS" ] && return 0
 173         for section in ${CONFIG_SECTIONS}; do
 174                 config_get cfgtype "$section" TYPE
 175                 [ -n "$type" -a "x$cfgtype" != "x$type" ] && continue
 176                 eval "$function \"\$section\" \"\$@\""
 177         done
 178 }
 179
 180 config_list_foreach() {
 181         [ "$#" -ge 3 ] || return 0
 182         local section="$1"; shift
 183         local option="$1"; shift
 184         local function="$1"; shift
 185         local val
 186         local len
 187         local c=1
 188
 189         config_get len "${section}" "${option}_LENGTH"
 190         [ -z "$len" ] && return 0
 191         while [ $c -le "$len" ]; do
 192                 config_get val "${section}" "${option}_ITEM$c"
 193                 eval "$function \"\$val\" \"$@\""
 194                 c="$(($c + 1))"
 195         done
 196 }
 197
 198 load_modules() {
 199         [ -d /etc/modules.d ] && {
 200                 cd /etc/modules.d
 201                 sed 's/^[^#]/insmod &/' $* | ash 2>&- || :
 202         }
 203 }
 204
 205 include() {
 206         local file
 207
 208         for file in $(ls $1/*.sh 2>/dev/null); do
 209                 . $file
 210         done
 211 }
 212
 213 find_mtd_part() {
 214         local PART="$(grep "\"$1\"" /proc/mtd | awk -F: '{print $1}')"
 215         local PREFIX=/dev/mtdblock
 216
 217         PART="${PART##mtd}"
 218         [ -d /dev/mtdblock ] && PREFIX=/dev/mtdblock/
 219         echo "${PART:+$PREFIX$PART}"
 220 }
 221
 222 strtok() { # <string> { <variable> [<separator>] ... }
 223         local tmp
 224         local val="$1"
 225         local count=0
 226
 227         shift
 228
 229         while [ $# -gt 1 ]; do
 230                 tmp="${val%%$2*}"
 231
 232                 [ "$tmp" = "$val" ] && break
 233
 234                 val="${val#$tmp$2}"
 235
 236                 export ${NO_EXPORT:+-n} "$1=$tmp"; count=$((count+1))
 237                 shift 2
 238         done
 239
 240         if [ $# -gt 0 -a -n "$val" ]; then
 241                 export ${NO_EXPORT:+-n} "$1=$val"; count=$((count+1))
 242         fi
 243
 244         return $count
 245 }
 246
 247
 248 jffs2_mark_erase() {
 249         local part="$(find_mtd_part "$1")"
 250         [ -z "$part" ] && {
 251                 echo Partition not found.
 252                 return 1
 253         }
 254         echo -e "\xde\xad\xc0\xde" | mtd -qq write - "$1"
 255 }
 256
 257 uci_apply_defaults() {(
 258         cd /etc/uci-defaults || return 0
 259         files="$(ls)"
 260         [ -z "$files" ] && return 0
 261         mkdir -p /tmp/.uci
 262         for file in $files; do
 263                 ( . "./$(basename $file)" ) && rm -f "$file"
 264         done
 265         uci commit
 266 )}
 267
 268 [ -z "$IPKG_INSTROOT" -a -f /lib/config/uci.sh ] && . /lib/config/uci.sh