-- Copyright 2008 Steven Barth <steven@midlink.org> -- Copyright 2008 Jo-Philipp Wich <jow@openwrt.org> -- Licensed to the public under the Apache License 2.0. module("luci.jsonrpc", package.seeall) require "luci.json" function resolve(mod, method) local path = luci.util.split(method, ".") for j=1, #path-1 do if not type(mod) == "table" then break end mod = rawget(mod, path[j]) if not mod then break end end mod = type(mod) == "table" and rawget(mod, path[#path]) or nil if type(mod) == "function" then return mod end end function handle(tbl, rawsource, ...) local decoder = luci.json.Decoder() local stat = luci.ltn12.pump.all(rawsource, decoder:sink()) local json = decoder:get() local response local success = false if stat then if type(json.method) == "string" and (not json.params or type(json.params) == "table") then local method = resolve(tbl, json.method) if method then response = reply(json.jsonrpc, json.id, proxy(method, unpack(json.params or {}))) else response = reply(json.jsonrpc, json.id, nil, {code=-32601, message="Method not found."}) end else response = reply(json.jsonrpc, json.id, nil, {code=-32600, message="Invalid request."}) end else response = reply("2.0", nil, nil, {code=-32700, message="Parse error."}) end return luci.json.Encoder(response, ...):source() end function reply(jsonrpc, id, res, err) require "luci.json" id = id or luci.json.null -- 1.0 compatibility if jsonrpc ~= "2.0" then jsonrpc = nil res = res or luci.json.null err = err or luci.json.null end return {id=id, result=res, error=err, jsonrpc=jsonrpc} end function proxy(method, ...) local res = {luci.util.copcall(method, ...)} local stat = table.remove(res, 1) if not stat then return nil, {code=-32602, message="Invalid params.", data=table.remove(res, 1)} else if #res <= 1 then return res[1] or luci.json.null else return res end end end