Openwrt/openwrt/package/base-files/default/lib/config/uci.sh
2006-10-09 05:59:26 +00:00

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#!/bin/sh
# Shell script defining macros for manipulating config files
#
# Copyright (C) 2006 by Fokus Fraunhofer <carsten.tittel@fokus.fraumhofer.de>
# Copyright (C) 2006 by Felix Fietkau <nbd@openwrt.org>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
uci_load() {
config_load "$PACKAGE"
local PACKAGE_BASE="$(basename "$PACKAGE")"
[ -f "/tmp/.uci/${PACKAGE_BASE}" ] && {
. "/tmp/.uci/${PACKAGE_BASE}"
config_cb
}
}
uci_do_update() {
local FILENAME="$1"
local UPDATE="$2"
awk -f /lib/config/uci-update.awk -f - <<EOF
BEGIN {
config = read_file("$FILENAME")
$UPDATE
print config
}
EOF
}
uci_add_update() {
local PACKAGE="$1"
local UPDATE="$2"
local PACKAGE_BASE="$(basename "$PACKAGE")"
# FIXME: add locking?
mkdir -p "/tmp/.uci"
echo "$UPDATE" >> "/tmp/.uci/${PACKAGE_BASE}"
}
uci_set() {
local PACKAGE="$1"
local CONFIG="$2"
local OPTION="$3"
local VALUE="$4"
( # spawn a subshell so you don't mess up the current environment
uci_load "$PACKAGE"
config_get type "$CONFIG" TYPE
[ -z "$type" ]
) || uci_add_update "$PACKAGE" "CONFIG_SECTION='$CONFIG'${N}option '$OPTION' '$VALUE'"
}
uci_add() {
local PACKAGE="$1"
local TYPE="$2"
local CONFIG="$3"
uci_add_update "$PACKAGE" "config '$TYPE' '$CONFIG'"
}
uci_rename() {
local PACKAGE="$1"
local CONFIG="$2"
local VALUE="$3"
uci_add_update "$PACKAGE" "config_rename '$CONFIG' '$VALUE'"
}
uci_remove() {
local PACKAGE="$1"
local CONFIG="$2"
local OPTION="$3"
if [ -z "$OPTION" ]; then
uci_add_update "$PACKAGE" "config_clear '$CONFIG'"
else
uci_add_update "$PACKAGE" "config_unset '$CONFIG' '$OPTION'"
fi
}
uci_commit() {
local PACKAGE="$1"
local PACKAGE_BASE="$(basename "$PACKAGE")"
mkdir -p /tmp/.uci
lock "/tmp/.uci/$PACKAGE_BASE.lock"
[ -f "/tmp/.uci/$PACKAGE_BASE" ] && (
updatestr=""
# replace handlers
config() {
append updatestr "config = update_config(config, \"@$2=$1\")" "$N"
}
option() {
append updatestr "config = update_config(config, \"$CONFIG_SECTION.$1=$2\")" "$N"
}
config_rename() {
append updatestr "config = update_config(config, \"&$1=$2\")" "$N"
}
config_unset() {
append updatestr "config = update_config(config, \"-$1.$2\")" "$N"
}
config_clear() {
append updatestr "config = update_config(config, \"-$1\")" "$N"
}
. "/tmp/.uci/$PACKAGE_BASE"
# completely disable handlers so that they don't get in the way
config() {
return 0
}
option() {
return 0
}
config_load "$PACKAGE" || CONFIG_FILENAME="$ROOT/etc/config/$PACKAGE_BASE"
uci_do_update "$CONFIG_FILENAME" "$updatestr" > "/tmp/.uci/$PACKAGE_BASE.new" && {
mv -f "/tmp/.uci/$PACKAGE_BASE.new" "$CONFIG_FILENAME" && \
rm -f "/tmp/.uci/$PACKAGE_BASE"
}
)
lock -u "/tmp/.uci/$PACKAGE_BASE.lock"
}