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|
#!/bin/sh
# Shell script defining macros for manipulating config files
#
# Copyright (C) 2006 Fokus Fraunhofer <carsten.tittel@fokus.fraunhofer.de>
# Copyright (C) 2006,2007 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 "$1"
}
uci_apply_defaults() {(
cd /etc/uci-defaults || return 0
files="$(ls)"
[ -z "$files" ] && return 0
mkdir -p /tmp/.uci
for file in $files; do
( . "./$(basename $file)" ) && rm -f "$file"
done
uci commit
)}
uci_call_awk() {
local CMD="$*"
awk -f $UCI_ROOT/lib/config/uci.awk -f - <<EOF
BEGIN {
$CMD
}
EOF
}
uci_do_update() {
local FILENAME="$1"
local UPDATE="$2"
uci_call_awk "
config = read_file(\"$FILENAME\")
$UPDATE
print config
"
}
uci_add_update() {
local PACKAGE="$1"
local UPDATE="$2"
local PACKAGE_BASE="$(basename "$PACKAGE")"
local UCIFILE
case "$PACKAGE" in
/*) UCIFILE="$PACKAGE";;
*)
UCIFILE="/tmp/.uci/$PACKAGE_BASE"
mkdir -p "/tmp/.uci"
;;
esac
# FIXME: add locking?
echo "$UPDATE" >> "$UCIFILE"
}
uci_set() {
local PACKAGE="$1"
local CONFIG="$2"
local OPTION="$3"
local VALUE="$4"
case "$PACKAGE" in
/*)
uci_add_update "$PACKAGE" "config_set '$CONFIG' '$OPTION' '$VALUE'"
;;
*)
( # spawn a subshell so you don't mess up the current environment
uci_load "$PACKAGE"
config_get OLDVAL "$CONFIG" "$OPTION"
if [ "x$OLDVAL" != "x$VALUE" ]; then
config_get type "$CONFIG" TYPE
[ -z "$type" ]
fi
) || uci_add_update "$PACKAGE" "config_set '$CONFIG' '$OPTION' '$VALUE'"
;;
esac
}
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 "$PACKAGE")"
case "$PACKAGE" in
/*) return 0;;
esac
mkdir -p /tmp/.uci
LOCK=`which lock` || LOCK=:
$LOCK "/tmp/.uci/$PACKAGE_BASE.lock"
[ -f "/tmp/.uci/$PACKAGE_BASE" ] && (
updatestr=""
# replace handlers
config() {
append updatestr "config = uci_update_config(config, \"@$2=$1\")" "$N"
}
option() {
append updatestr "config = uci_update_config(config, \"$CONFIG_SECTION.$1=$2\")" "$N"
}
config_rename() {
append updatestr "config = uci_update_config(config, \"&$1=$2\")" "$N"
}
config_unset() {
append updatestr "config = uci_update_config(config, \"-$1.$2\")" "$N"
}
config_clear() {
append updatestr "config = uci_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="${CONFIG_FILENAME:-$UCI_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"
}
|
