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 alias mount='busybox mount'
   7
   8 # newline
   9 N="
  10 "
  11
  12 _C=0
  13 NO_EXPORT=1
  14 LOAD_STATE=1
  15 LIST_SEP=" "
  16
  17 hotplug_dev() {
  18         env -i ACTION=$1 INTERFACE=$2 /sbin/hotplug-call net
  19 }
  20
  21 append() {
  22         local var="$1"
  23         local value="$2"
  24         local sep="${3:- }"
  25
  26         eval "export ${NO_EXPORT:+-n} -- \"$var=\${$var:+\${$var}\${value:+\$sep}}\$value\""
  27 }
  28
  29 list_contains() {
  30         local var="$1"
  31         local str="$2"
  32         local val
  33
  34         eval "val=\" \${$var} \""
  35         [ "${val%% $str *}" != "$val" ]
  36 }
  37
  38 list_remove() {
  39         local var="$1"
  40         local remove="$2"
  41         local val
  42
  43         eval "val=\" \${$var} \""
  44         val1="${val%% $remove *}"
  45         [ "$val1" = "$val" ] && return
  46         val2="${val##* $remove }"
  47         [ "$val2" = "$val" ] && return
  48         val="${val1## } ${val2%% }"
  49         val="${val%% }"
  50         eval "export ${NO_EXPORT:+-n} -- \"$var=\$val\""
  51 }
  52
  53 config_load() {
  54         [ -n "$IPKG_INSTROOT" ] && return 0
  55         uci_load "$@"
  56 }
  57
  58 reset_cb() {
  59         config_cb() { return 0; }
  60         option_cb() { return 0; }
  61         list_cb() { return 0; }
  62 }
  63 reset_cb
  64
  65 package() {
  66         return 0
  67 }
  68
  69 config () {
  70         local cfgtype="$1"
  71         local name="$2"
  72
  73         export ${NO_EXPORT:+-n} CONFIG_NUM_SECTIONS=$(($CONFIG_NUM_SECTIONS + 1))
  74         name="${name:-cfg$CONFIG_NUM_SECTIONS}"
  75         append CONFIG_SECTIONS "$name"
  76         [ -n "$NO_CALLBACK" ] || config_cb "$cfgtype" "$name"
  77         export ${NO_EXPORT:+-n} CONFIG_SECTION="$name"
  78         export ${NO_EXPORT:+-n} "CONFIG_${CONFIG_SECTION}_TYPE=$cfgtype"
  79 }
  80
  81 option () {
  82         local varname="$1"; shift
  83         local value="$*"
  84
  85         export ${NO_EXPORT:+-n} "CONFIG_${CONFIG_SECTION}_${varname}=$value"
  86         [ -n "$NO_CALLBACK" ] || option_cb "$varname" "$*"
  87 }
  88
  89 list() {
  90         local varname="$1"; shift
  91         local value="$*"
  92         local len
  93
  94         config_get len "$CONFIG_SECTION" "${varname}_LENGTH" 0
  95         len=$(($len + 1))
  96         config_set "$CONFIG_SECTION" "${varname}_ITEM$len" "$value"
  97         config_set "$CONFIG_SECTION" "${varname}_LENGTH" "$len"
  98         append "CONFIG_${CONFIG_SECTION}_${varname}" "$value" "$LIST_SEP"
  99         list_cb "$varname" "$*"
 100 }
 101
 102 config_rename() {
 103         local OLD="$1"
 104         local NEW="$2"
 105         local oldvar
 106         local newvar
 107
 108         [ -n "$OLD" -a -n "$NEW" ] || return
 109         for oldvar in `set | grep ^CONFIG_${OLD}_ | \
 110                 sed -e 's/\(.*\)=.*$/\1/'` ; do
 111                 newvar="CONFIG_${NEW}_${oldvar##CONFIG_${OLD}_}"
 112                 eval "export ${NO_EXPORT:+-n} \"$newvar=\${$oldvar}\""
 113                 unset "$oldvar"
 114         done
 115         export ${NO_EXPORT:+-n} CONFIG_SECTIONS="$(echo " $CONFIG_SECTIONS " | sed -e "s, $OLD , $NEW ,")"
 116
 117         [ "$CONFIG_SECTION" = "$OLD" ] && export ${NO_EXPORT:+-n} CONFIG_SECTION="$NEW"
 118 }
 119
 120 config_unset() {
 121         config_set "$1" "$2" ""
 122 }
 123
 124 config_clear() {
 125         local SECTION="$1"
 126         local oldvar
 127
 128         list_remove CONFIG_SECTIONS "$SECTION"
 129         export ${NO_EXPORT:+-n} CONFIG_SECTIONS="${SECTION:+$CONFIG_SECTIONS}"
 130
 131         for oldvar in `set | grep ^CONFIG_${SECTION:+${SECTION}_} | \
 132                 sed -e 's/\(.*\)=.*$/\1/'` ; do
 133                 unset $oldvar
 134         done
 135 }
 136
 137 # config_get <variable> <section> <option> [<default>]
 138 # config_get <section> <option>
 139 config_get() {
 140         case "$3" in
 141                 "") eval echo "\${CONFIG_${1}_${2}:-\${4}}";;
 142                 *)  eval export ${NO_EXPORT:+-n} -- "${1}=\${CONFIG_${2}_${3}:-\${4}}";;
 143         esac
 144 }
 145
 146 # config_get_bool <variable> <section> <option> [<default>]
 147 config_get_bool() {
 148         local _tmp
 149         config_get _tmp "$2" "$3" "$4"
 150         case "$_tmp" in
 151                 1|on|true|enabled) _tmp=1;;
 152                 0|off|false|disabled) _tmp=0;;
 153                 *) _tmp="$4";;
 154         esac
 155         export ${NO_EXPORT:+-n} "$1=$_tmp"
 156 }
 157
 158 config_set() {
 159         local section="$1"
 160         local option="$2"
 161         local value="$3"
 162         local old_section="$CONFIG_SECTION"
 163
 164         CONFIG_SECTION="$section"
 165         option "$option" "$value"
 166         CONFIG_SECTION="$old_section"
 167 }
 168
 169 config_foreach() {
 170         local function="$1"
 171         [ "$#" -ge 1 ] && shift
 172         local type="$1"
 173         [ "$#" -ge 1 ] && shift
 174         local section cfgtype
 175
 176         [ -z "$CONFIG_SECTIONS" ] && return 0
 177         for section in ${CONFIG_SECTIONS}; do
 178                 config_get cfgtype "$section" TYPE
 179                 [ -n "$type" -a "x$cfgtype" != "x$type" ] && continue
 180                 eval "$function \"\$section\" \"\$@\""
 181         done
 182 }
 183
 184 config_list_foreach() {
 185         [ "$#" -ge 3 ] || return 0
 186         local section="$1"; shift
 187         local option="$1"; shift
 188         local function="$1"; shift
 189         local val
 190         local len
 191         local c=1
 192
 193         config_get len "${section}" "${option}_LENGTH"
 194         [ -z "$len" ] && return 0
 195         while [ $c -le "$len" ]; do
 196                 config_get val "${section}" "${option}_ITEM$c"
 197                 eval "$function \"\$val\" \"$@\""
 198                 c="$(($c + 1))"
 199         done
 200 }
 201
 202 load_modules() {
 203         [ -d /etc/modules.d ] && {
 204                 cd /etc/modules.d
 205                 sed 's/^[^#]/insmod &/' $* | ash 2>&- || :
 206         }
 207 }
 208
 209 include() {
 210         local file
 211
 212         for file in $(ls $1/*.sh 2>/dev/null); do
 213                 . $file
 214         done
 215 }
 216
 217 find_mtd_part() {
 218         local PART="$(grep "\"$1\"" /proc/mtd | awk -F: '{print $1}')"
 219         local PREFIX=/dev/mtdblock
 220
 221         PART="${PART##mtd}"
 222         [ -d /dev/mtdblock ] && PREFIX=/dev/mtdblock/
 223         echo "${PART:+$PREFIX$PART}"
 224 }
 225
 226 strtok() { # <string> { <variable> [<separator>] ... }
 227         local tmp
 228         local val="$1"
 229         local count=0
 230
 231         shift
 232
 233         while [ $# -gt 1 ]; do
 234                 tmp="${val%%$2*}"
 235
 236                 [ "$tmp" = "$val" ] && break
 237
 238                 val="${val#$tmp$2}"
 239
 240                 export ${NO_EXPORT:+-n} "$1=$tmp"; count=$((count+1))
 241                 shift 2
 242         done
 243
 244         if [ $# -gt 0 -a -n "$val" ]; then
 245                 export ${NO_EXPORT:+-n} "$1=$val"; count=$((count+1))
 246         fi
 247
 248         return $count
 249 }
 250
 251
 252 jffs2_mark_erase() {
 253         local part="$(find_mtd_part "$1")"
 254         [ -z "$part" ] && {
 255                 echo Partition not found.
 256                 return 1
 257         }
 258         echo -e "\xde\xad\xc0\xde" | mtd -qq write - "$1"
 259 }
 260
 261 uci_apply_defaults() {(
 262         cd /etc/uci-defaults || return 0
 263         files="$(ls)"
 264         [ -z "$files" ] && return 0
 265         mkdir -p /tmp/.uci
 266         for file in $files; do
 267                 ( . "./$(basename $file)" ) && rm -f "$file"
 268         done
 269         uci commit
 270 )}
 271
 272 [ -z "$IPKG_INSTROOT" -a -f /lib/config/uci.sh ] && . /lib/config/uci.sh