Add tools for RUTX platform on 6.1 kernel

6.1/target/linux/ipq40xx/base-files/lib/functions/migrate.sh

@@ -0,0 +1,196 @@
+#!/bin/sh
+
+. /lib/functions.sh
+. /usr/share/libubox/jshn.sh
+
+CFG_PATH="/etc/config/"
+
+get_section_name() {
+	local ___var="$1"
+	[ "$#" -ge 1 ] && shift
+	local ___type="$1"
+	[ "$#" -ge 1 ] && shift
+	local section cfgtype
+
+	[ -z "$CONFIG_SECTIONS" ] && return 0
+	for section in ${CONFIG_SECTIONS}; do
+		config_get cfgtype "$section" TYPE
+		[ -n "$___type" -a "x$cfgtype" != "x$___type" ] && continue
+		eval export "${___var}=\${section}"
+		return 0
+	done
+}
+
+_set_option() {
+	local option="$1"
+	local value="$2"
+
+	uci_set "$_NEW_CONFIG" "$_NEW_SEC_NAME" "$option" "$value"
+}
+
+_set_list_option() {
+	local option="$1"
+	local value="$2"
+
+	for element in $value; do
+		uci_add_list "$_NEW_CONFIG" "$_NEW_SEC_NAME" "$option" "$element"
+	done
+}
+
+_del_uci_element() {
+	local section="$1"
+	local option="$2"
+
+	uci_remove "$_OLD_CONFIG" "$section" "$option"
+}
+_option_cond_cb() {
+	local value=$3
+
+	json_select $2
+	json_get_var old 1
+	json_get_var new 2
+
+	[ "$old" = "$value" ] && _COND_VALUE="$new"
+
+	json_select ..
+}
+
+_parse_condition(){
+	local value="$1"
+
+	_COND_VALUE=
+	json_for_each_item _option_cond_cb "if" "$value"
+}
+
+_option_rule_cb(){
+	local rule="$1"
+	local option="$2"
+	local value
+
+	[ -n "$rule" ] || return 0
+
+	json_select "$option"
+	json_get_vars new_name "if" default cb type
+
+	if [ -n "$cb" ]; then
+		eval "$cb \"\$option\" \"\$_OLD_SEC_NAME\" \"\$_NEW_SEC_NAME\""
+		[ "$?" -eq 0 ] && {
+			json_select ..
+			return 0
+		}
+
+		value="$_OPTION_VALUE"
+	else
+		config_get value $_OLD_SEC_NAME "$option" "$default"
+	fi
+
+	[ -n "$if" ] && {
+		_parse_condition "$value"
+		value="${_COND_VALUE:-${value:-$default}}"
+	}
+
+	if [ -n "$type" -a "$type" = "list" ]; then
+		_set_list_option "${new_name:-$option}" "$value"
+	else
+		_set_option "${new_name:-$option}" "$value"
+	fi
+
+	json_select ..
+}
+
+_init_section() {
+	local sec_t
+
+	json_get_vars old_name new_name new_type old_type
+	[ -n "$old_name" -o -n "$old_type" ] || return 1
+
+	if [ -z "$old_name" ]; then
+		get_section_name _OLD_SEC_NAME "$old_type"
+	else
+		_OLD_SEC_NAME=$old_name
+	fi
+
+	_NEW_SEC_NAME=$new_name
+	_OLD_SEC_TYPE=$old_type
+	_NEW_SEC_TYPE=${new_type:-$old_type}
+	[ -n "$_NEW_SEC_TYPE" ] || \
+		eval "_NEW_SEC_TYPE=\$CONFIG_${_OLD_SEC_NAME}_TYPE"
+
+	if [ -n "$_NEW_SEC_NAME" ]; then
+		uci set "$_NEW_CONFIG"."$_NEW_SEC_NAME"="$_NEW_SEC_TYPE"
+	else
+		_NEW_SEC_NAME="$(uci -q add "$_NEW_CONFIG" "$_NEW_SEC_TYPE")"
+	fi
+
+	[ -n "$_NEW_SEC_NAME" ] || return 1
+}
+
+_section_rule_cb(){
+	local rule="$1"
+	local section="$2"
+	local value
+
+	[ -n "$rule" ] || return 0
+
+	json_select "$section"
+	json_get_vars cb old_name new_name new_type old_type remove
+	[ -n "$cb" ] && {
+		eval "$cb \"\$old_name\" \"\$new_name\" \"\$old_type\" \"\$new_type\""
+		[ "$?" -eq 0 ] && {
+			json_select ..
+			return 0
+		}
+	}
+
+	_init_section
+	[ $? -ne 0 ] && {
+		logger -t "Migration" "Unable to init section"
+		json_select ..
+
+		return 1
+	}
+
+	json_for_each_item _option_rule_cb options
+	json_select ..
+	[ -n "$remove" ] && {
+		_del_uci_element "$old_name"
+		uci_commit "$_OLD_CONFIG"
+	}
+}
+
+_init_config() {
+	json_select config
+	json_get_vars old_name new_name
+
+	[ -n "$old_name" ] || return 1
+	[ -f "$CFG_PATH$old_name" ] || return 1
+	[ -f "$CFG_PATH$new_name" ] || touch $CFG_PATH$new_name
+
+	config_load "$old_name"
+	_NEW_CONFIG="${new_name:-$old_name}"
+	_OLD_CONFIG="$old_name"
+
+	json_select ..
+}
+
+migrate() {
+	local remove
+	local json_file="$1"
+
+	[ -f "$json_file" ] || return 0
+
+	json_init
+	json_load_file "$json_file"
+	json_select
+	_init_config
+	[ $? -ne 0 ] && {
+		logger -t "Migration" "Unable to load config"
+		return 1
+	}
+
+	json_for_each_item _section_rule_cb sections
+	uci_commit "$_NEW_CONFIG"
+
+	json_get_vars remove
+	[ -n "$remove" ] && rm "$CFG_PATH$_OLD_CONFIG"
+}