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
   6 debug () {
   7         ${DEBUG:-:} "$@"
   8 }
   9 mount() {
  10         busybox mount "$@"
  11 }
  12
  13 # newline
  14 N="
  15 "
  16
  17 _C=0
  18 NO_EXPORT=1
  19 LOAD_STATE=1
  20 LIST_SEP=" "
  21
  22 hotplug_dev() {
  23         env -i ACTION=$1 INTERFACE=$2 /sbin/hotplug-call net
  24 }
  25
  26 append() {
  27         local var="$1"
  28         local value="$2"
  29         local sep="${3:- }"
  30
  31         eval "export ${NO_EXPORT:+-n} -- \"$var=\${$var:+\${$var}\${value:+\$sep}}\$value\""
  32 }
  33
  34 list_contains() {
  35         local var="$1"
  36         local str="$2"
  37         local val
  38
  39         eval "val=\" \${$var} \""
  40         [ "${val%% $str *}" != "$val" ]
  41 }
  42
  43 list_remove() {
  44         local var="$1"
  45         local remove="$2"
  46         local val
  47
  48         eval "val=\" \${$var} \""
  49         val1="${val%% $remove *}"
  50         [ "$val1" = "$val" ] && return
  51         val2="${val##* $remove }"
  52         [ "$val2" = "$val" ] && return
  53         val="${val1## } ${val2%% }"
  54         val="${val%% }"
  55         eval "export ${NO_EXPORT:+-n} -- \"$var=\$val\""
  56 }
  57
  58 config_load() {
  59         [ -n "$IPKG_INSTROOT" ] && return 0
  60         uci_load "$@"
  61 }
  62
  63 reset_cb() {
  64         config_cb() { return 0; }
  65         option_cb() { return 0; }
  66         list_cb() { return 0; }
  67 }
  68 reset_cb
  69
  70 package() {
  71         return 0
  72 }
  73
  74 config () {
  75         local cfgtype="$1"
  76         local name="$2"
  77
  78         export ${NO_EXPORT:+-n} CONFIG_NUM_SECTIONS=$(($CONFIG_NUM_SECTIONS + 1))
  79         name="${name:-cfg$CONFIG_NUM_SECTIONS}"
  80         append CONFIG_SECTIONS "$name"
  81         [ -n "$NO_CALLBACK" ] || config_cb "$cfgtype" "$name"
  82         export ${NO_EXPORT:+-n} CONFIG_SECTION="$name"
  83         export ${NO_EXPORT:+-n} "CONFIG_${CONFIG_SECTION}_TYPE=$cfgtype"
  84 }
  85
  86 option () {
  87         local varname="$1"; shift
  88         local value="$*"
  89
  90         export ${NO_EXPORT:+-n} "CONFIG_${CONFIG_SECTION}_${varname}=$value"
  91         [ -n "$NO_CALLBACK" ] || option_cb "$varname" "$*"
  92 }
  93
  94 list() {
  95         local varname="$1"; shift
  96         local value="$*"
  97         local len
  98
  99         config_get len "$CONFIG_SECTION" "${varname}_LENGTH" 0
 100         len=$(($len + 1))
 101         config_set "$CONFIG_SECTION" "${varname}_ITEM$len" "$value"
 102         config_set "$CONFIG_SECTION" "${varname}_LENGTH" "$len"
 103         append "CONFIG_${CONFIG_SECTION}_${varname}" "$value" "$LIST_SEP"
 104         list_cb "$varname" "$*"
 105 }
 106
 107 config_rename() {
 108         local OLD="$1"
 109         local NEW="$2"
 110         local oldvar
 111         local newvar
 112
 113         [ -n "$OLD" -a -n "$NEW" ] || return
 114         for oldvar in `set | grep ^CONFIG_${OLD}_ | \
 115                 sed -e 's/\(.*\)=.*$/\1/'` ; do
 116                 newvar="CONFIG_${NEW}_${oldvar##CONFIG_${OLD}_}"
 117                 eval "export ${NO_EXPORT:+-n} \"$newvar=\${$oldvar}\""
 118                 unset "$oldvar"
 119         done
 120         export ${NO_EXPORT:+-n} CONFIG_SECTIONS="$(echo " $CONFIG_SECTIONS " | sed -e "s, $OLD , $NEW ,")"
 121
 122         [ "$CONFIG_SECTION" = "$OLD" ] && export ${NO_EXPORT:+-n} CONFIG_SECTION="$NEW"
 123 }
 124
 125 config_unset() {
 126         config_set "$1" "$2" ""
 127 }
 128
 129 config_clear() {
 130         local SECTION="$1"
 131         local oldvar
 132
 133         list_remove CONFIG_SECTIONS "$SECTION"
 134         export ${NO_EXPORT:+-n} CONFIG_SECTIONS="${SECTION:+$CONFIG_SECTIONS}"
 135
 136         for oldvar in `set | grep ^CONFIG_${SECTION:+${SECTION}_} | \
 137                 sed -e 's/\(.*\)=.*$/\1/'` ; do
 138                 unset $oldvar
 139         done
 140 }
 141
 142 # config_get <variable> <section> <option> [<default>]
 143 # config_get <section> <option>
 144 config_get() {
 145         case "$3" in
 146                 "") eval echo "\${CONFIG_${1}_${2}:-\${4}}";;
 147                 *)  eval export ${NO_EXPORT:+-n} -- "${1}=\${CONFIG_${2}_${3}:-\${4}}";;
 148         esac
 149 }
 150
 151 # config_get_bool <variable> <section> <option> [<default>]
 152 config_get_bool() {
 153         local _tmp
 154         config_get _tmp "$2" "$3" "$4"
 155         case "$_tmp" in
 156                 1|on|true|enabled) _tmp=1;;
 157                 0|off|false|disabled) _tmp=0;;
 158                 *) _tmp="$4";;
 159         esac
 160         export ${NO_EXPORT:+-n} "$1=$_tmp"
 161 }
 162
 163 config_set() {
 164         local section="$1"
 165         local option="$2"
 166         local value="$3"
 167         local old_section="$CONFIG_SECTION"
 168
 169         CONFIG_SECTION="$section"
 170         option "$option" "$value"
 171         CONFIG_SECTION="$old_section"
 172 }
 173
 174 config_foreach() {
 175         local function="$1"
 176         [ "$#" -ge 1 ] && shift
 177         local type="$1"
 178         [ "$#" -ge 1 ] && shift
 179         local section cfgtype
 180
 181         [ -z "$CONFIG_SECTIONS" ] && return 0
 182         for section in ${CONFIG_SECTIONS}; do
 183                 config_get cfgtype "$section" TYPE
 184                 [ -n "$type" -a "x$cfgtype" != "x$type" ] && continue
 185                 eval "$function \"\$section\" \"\$@\""
 186         done
 187 }
 188
 189 config_list_foreach() {
 190         [ "$#" -ge 3 ] || return 0
 191         local section="$1"; shift
 192         local option="$1"; shift
 193         local function="$1"; shift
 194         local val
 195         local len
 196         local c=1
 197
 198         config_get len "${section}" "${option}_LENGTH"
 199         [ -z "$len" ] && return 0
 200         while [ $c -le "$len" ]; do
 201                 config_get val "${section}" "${option}_ITEM$c"
 202                 eval "$function \"\$val\" \"$@\""
 203                 c="$(($c + 1))"
 204         done
 205 }
 206
 207 load_modules() {
 208         [ -d /etc/modules.d ] && {
 209                 cd /etc/modules.d
 210                 sed 's/^[^#]/insmod &/' $* | ash 2>&- || :
 211         }
 212 }
 213
 214 include() {
 215         local file
 216
 217         for file in $(ls $1/*.sh 2>/dev/null); do
 218                 . $file
 219         done
 220 }
 221
 222 find_mtd_part() {
 223         local PART="$(grep "\"$1\"" /proc/mtd | awk -F: '{print $1}')"
 224         local PREFIX=/dev/mtdblock
 225
 226         PART="${PART##mtd}"
 227         [ -d /dev/mtdblock ] && PREFIX=/dev/mtdblock/
 228         echo "${PART:+$PREFIX$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 ${NO_EXPORT:+-n} "$1=$tmp"; count=$((count+1))
 246                 shift 2
 247         done
 248
 249         if [ $# -gt 0 -a -n "$val" ]; then
 250                 export ${NO_EXPORT:+-n} "$1=$val"; count=$((count+1))
 251         fi
 252
 253         return $count
 254 }
 255
 256
 257 jffs2_mark_erase() {
 258         local part="$(find_mtd_part "$1")"
 259         [ -z "$part" ] && {
 260                 echo Partition not found.
 261                 return 1
 262         }
 263         echo -e "\xde\xad\xc0\xde" | mtd -qq write - "$1"
 264 }
 265
 266 uci_apply_defaults() {
 267         cd /etc/uci-defaults || return 0
 268         files="$(ls)"
 269         [ -z "$files" ] && return 0
 270         mkdir -p /tmp/.uci
 271         for file in $files; do
 272                 ( . "./$(basename $file)" ) && rm -f "$file"
 273         done
 274         uci commit
 275 }
 276
 277 [ -z "$IPKG_INSTROOT" -a -f /lib/config/uci.sh ] && . /lib/config/uci.sh