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"
  95         len="$((${len:-0} + 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() {
 138         case "$3" in
 139                 "") eval "echo \"\${CONFIG_${1}_${2}}\"";;
 140                 *)  eval "export ${NO_EXPORT:+-n} -- \"$1=\${CONFIG_${2}_${3}}\"";;
 141         esac
 142 }
 143
 144 # config_get_bool <variable> <section> <option> [<default>]
 145 config_get_bool() {
 146         local _tmp
 147         config_get "_tmp" "$2" "$3"
 148         case "$_tmp" in
 149                 1|on|true|enabled) export ${NO_EXPORT:+-n} "$1=1";;
 150                 0|off|false|disabled) export ${NO_EXPORT:+-n} "$1=0";;
 151                 *) eval "$1=$4";;
 152         esac
 153 }
 154
 155 config_set() {
 156         local section="$1"
 157         local option="$2"
 158         local value="$3"
 159         local old_section="$CONFIG_SECTION"
 160
 161         CONFIG_SECTION="$section"
 162         option "$option" "$value"
 163         CONFIG_SECTION="$old_section"
 164 }
 165
 166 config_foreach() {
 167         local function="$1"
 168         [ "$#" -ge 1 ] && shift
 169         local type="$1"
 170         [ "$#" -ge 1 ] && shift
 171         local section cfgtype
 172
 173         [ -z "$CONFIG_SECTIONS" ] && return 0
 174         for section in ${CONFIG_SECTIONS}; do
 175                 config_get cfgtype "$section" TYPE
 176                 [ -n "$type" -a "x$cfgtype" != "x$type" ] && continue
 177                 eval "$function \"\$section\" \"\$@\""
 178         done
 179 }
 180
 181 config_list_foreach() {
 182         [ "$#" -ge 3 ] || return 0
 183         local section="$1"; shift
 184         local option="$1"; shift
 185         local function="$1"; shift
 186         local val
 187         local len
 188         local c=1
 189
 190         config_get len "${section}" "${option}_LENGTH"
 191         [ -z "$len" ] && return 0
 192         while [ $c -le "$len" ]; do
 193                 config_get val "${section}" "${option}_ITEM$c"
 194                 eval "$function \"\$val\" \"$@\""
 195                 c="$(($c + 1))"
 196         done
 197 }
 198
 199 load_modules() {
 200         [ -d /etc/modules.d ] && {
 201                 cd /etc/modules.d
 202                 sed 's/^[^#]/insmod &/' $* | ash 2>&- || :
 203         }
 204 }
 205
 206 include() {
 207         local file
 208
 209         for file in $(ls $1/*.sh 2>/dev/null); do
 210                 . $file
 211         done
 212 }
 213
 214 find_mtd_part() {
 215         local PART="$(grep "\"$1\"" /proc/mtd | awk -F: '{print $1}')"
 216         local PREFIX=/dev/mtdblock
 217
 218         PART="${PART##mtd}"
 219         [ -d /dev/mtdblock ] && PREFIX=/dev/mtdblock/
 220         echo "${PART:+$PREFIX$PART}"
 221 }
 222
 223 strtok() { # <string> { <variable> [<separator>] ... }
 224         local tmp
 225         local val="$1"
 226         local count=0
 227
 228         shift
 229
 230         while [ $# -gt 1 ]; do
 231                 tmp="${val%%$2*}"
 232
 233                 [ "$tmp" = "$val" ] && break
 234
 235                 val="${val#$tmp$2}"
 236
 237                 export ${NO_EXPORT:+-n} "$1=$tmp"; count=$((count+1))
 238                 shift 2
 239         done
 240
 241         if [ $# -gt 0 -a -n "$val" ]; then
 242                 export ${NO_EXPORT:+-n} "$1=$val"; count=$((count+1))
 243         fi
 244
 245         return $count
 246 }
 247
 248
 249 jffs2_mark_erase() {
 250         local part="$(find_mtd_part "$1")"
 251         [ -z "$part" ] && {
 252                 echo Partition not found.
 253                 return 1
 254         }
 255         echo -e "\xde\xad\xc0\xde" | mtd -qq write - "$1"
 256 }
 257
 258 uci_apply_defaults() {(
 259         cd /etc/uci-defaults || return 0
 260         files="$(ls)"
 261         [ -z "$files" ] && return 0
 262         mkdir -p /tmp/.uci
 263         for file in $files; do
 264                 ( . "./$(basename $file)" ) && rm -f "$file"
 265         done
 266         uci commit
 267 )}
 268
 269 [ -z "$IPKG_INSTROOT" -a -f /lib/config/uci.sh ] && . /lib/config/uci.sh