jbe@203: #!/usr/bin/env moonbridge
jbe/bsw@0: 
jbe@203: WEBMCP_VERSION = "2.0.0_devel"
jbe@64: 
jbe@203: -- check if interactive mode
jbe@203: if listen then  -- defined by moonbridge
jbe@203:   WEBMCP_MODE = "listen"
jbe@203: else
jbe@203:   WEBMCP_MODE = "interactive"
jbe@64: end
jbe@203: 
jbe@206: -- configuration names are provided as 4th, 5th, etc. argument
jbe@206: WEBMCP_CONFIG_NAMES = {select(4, ...)}
jbe@203: 
jbe@203: -- determine framework and bath path from command line arguments
jbe@203: -- or print usage synopsis (if applicable)
jbe@68: do
jbe@206:   local arg1, arg2, arg3 = ...
jbe@203:   local helpout
jbe@203:   if
jbe@203:     arg1 == "-h" or arg1 == "--help" or
jbe@206:     arg2 == "-h" or arg2 == "--help"  -- if first arg is provided by wrapper
jbe@203:   then
jbe@203:     helpout = io.stdout
jbe@203:   elseif
jbe@206:     #config_args < 1 or
jbe@206:     (WEBMCP_MODE == "interactive") ~= (arg3 == "INTERACTIVE")
jbe@203:   then
jbe@203:     helpout = io.stderr
jbe@203:   end
jbe@206:   helpout:write("Usage: moonbridge -- <framework path>/bin/mcp.lua <framework path> <app base path> <app name> <config name> [<config name> ...]\n")
jbe@206:   helpout:write("   or: lua -i <framework path>/bin/mcp.lua <framework path> <app base path> INTERACTIVE <config name> [<config name> ...]\n")
jbe@203:   if helpout then
jbe@203:     if helpout == io.stderr then
jbe@203:       return 1
jbe@68:     else
jbe@203:       return 0
jbe@68:     end
jbe@68:   end
jbe@203:   local function append_trailing_slash(str)
jbe@203:     return string.sub(str, "([^/])$", function(last) return last .. "/" end)
jbe@203:   end
jbe@203:   WEBMCP_FRAMEWORK_PATH = append_trailing_slash(arg1)
jbe@203:   WEBMCP_BASE_PATH      = append_trailing_slash(arg2)
jbe@206:   if WEBMCP_MODE == "listen" then
jbe@206:     WEBMCP_APP_NAME = arg3
jbe@206:   end
jbe@68: end
jbe@1: 
jbe@203: -- setup search paths for libraries
jbe/bsw@0: do
jbe@203:   package.path = WEBMCP_FRAMEWORK_PATH .. "lib/?.lua;" .. package.path
jbe/bsw@0:   -- find out which file name extension shared libraries have
jbe/bsw@0:   local slib_exts = {}
jbe/bsw@0:   for ext in string.gmatch(package.cpath, "%?%.([A-Za-z0-9_-]+)") do
jbe/bsw@0:     slib_exts[ext] = true
jbe/bsw@0:   end
jbe/bsw@0:   local paths = {}
jbe/bsw@0:   for ext in pairs(slib_exts) do
jbe@203:     paths[#paths+1] = WEBMCP_FRAMEWORK_PATH .. "accelerator/?." .. ext
jbe/bsw@0:   end
jbe/bsw@0:   for ext in pairs(slib_exts) do
jbe@203:     paths[#paths+1] = WEBMCP_FRAMEWORK_PATH .. "lib/?." .. ext
jbe/bsw@0:   end
jbe/bsw@0:   paths[#paths+1] = package.cpath
jbe/bsw@0:   package.cpath = table.concat(paths, ";")
jbe/bsw@0: end
jbe/bsw@0: 
jbe@203: -- autoloader system for WebMCP environment "$WEBMCP_FRAMEWORK_PATH/env/",
jbe@203: -- application environment extensions "$WEBMCP_BASE_PATH/env/"
jbe@203: -- and models "$WEBMCP_BASE_PATH/model/"
jbe/bsw@0: do
jbe/bsw@0:   local weakkey_mt = { __mode = "k" }
jbe/bsw@0:   local autoloader_category = setmetatable({}, weakkey_mt)
jbe/bsw@0:   local autoloader_path     = setmetatable({}, weakkey_mt)
jbe/bsw@0:   local autoloader_mt       = {}
jbe/bsw@0:   local function install_autoloader(self, category, path)
jbe/bsw@0:     autoloader_category[self] = category
jbe/bsw@0:     autoloader_path[self]     = path
jbe/bsw@0:     setmetatable(self, autoloader_mt)
jbe/bsw@0:   end
jbe/bsw@0:   local function try_exec(filename)
jbe/bsw@0:     local file = io.open(filename, "r")
jbe/bsw@0:     if file then
jbe/bsw@0:       local filedata = file:read("*a")
jbe/bsw@0:       io.close(file)
jbe@68:       local func, errmsg = load(filedata, "=" .. filename)
jbe/bsw@0:       if func then
jbe/bsw@0:         func()
jbe/bsw@0:         return true
jbe/bsw@0:       else
jbe/bsw@0:         error(errmsg, 0)
jbe/bsw@0:       end
jbe/bsw@0:     else
jbe/bsw@0:       return false
jbe/bsw@0:     end
jbe/bsw@0:   end
jbe/bsw@0:   local function compose_path_string(base, path, key)
jbe@203:     if #path == 0 then
jbe@203:       return base .. "/" .. key
jbe@203:     else
jbe@203:       return base .. table.concat(path, "/") .. "/" .. key
jbe@203:     end
jbe/bsw@0:   end
jbe/bsw@0:   function autoloader_mt.__index(self, key)
jbe/bsw@0:     local category, base_path, merge_base_path, file_key
jbe/bsw@0:     local merge = false
jbe/bsw@0:     if
jbe/bsw@0:       string.find(key, "^[a-z_][A-Za-z0-9_]*$") and
jbe/bsw@0:       not string.find(key, "^__")
jbe/bsw@0:     then
jbe/bsw@0:       category        = "env"
jbe@203:       base_path       = WEBMCP_FRAMEWORK_PATH .. "env/"
jbe/bsw@0:       merge           = true
jbe@203:       merge_base_path = WEBMCP_BASE_PATH .. "env/"
jbe/bsw@0:       file_key        = key
jbe/bsw@0:     elseif string.find(key, "^[A-Z][A-Za-z0-9]*$") then
jbe/bsw@0:       category        = "model"
jbe@203:       base_path       = WEBMCP_BASE_PATH .. "model/"
jbe/bsw@0:       local first = true
jbe/bsw@0:       file_key = string.gsub(key, "[A-Z]",
jbe/bsw@0:         function(c)
jbe/bsw@0:           if first then
jbe/bsw@0:             first = false
jbe/bsw@0:             return string.lower(c)
jbe/bsw@0:           else
jbe/bsw@0:             return "_" .. string.lower(c)
jbe/bsw@0:           end
jbe/bsw@0:         end
jbe/bsw@0:       )
jbe/bsw@0:     else
jbe/bsw@0:       return
jbe/bsw@0:     end
jbe/bsw@0:     local required_category = autoloader_category[self]
jbe/bsw@0:     if required_category and required_category ~= category then return end
jbe/bsw@0:     local path = autoloader_path[self]
jbe/bsw@0:     local path_string = compose_path_string(base_path, path, file_key)
jbe/bsw@0:     local merge_path_string
jbe/bsw@0:     if merge then
jbe/bsw@0:       merge_path_string = compose_path_string(
jbe/bsw@0:         merge_base_path, path, file_key
jbe/bsw@0:       )
jbe/bsw@0:     end
jbe/bsw@0:     local function try_dir(dirname)
jbe/bsw@0:       local dir = io.open(dirname)
jbe/bsw@0:       if dir then
jbe/bsw@0:         io.close(dir)
jbe/bsw@0:         local obj = {}
jbe/bsw@0:         local sub_path = {}
jbe@203:         for i = 1, #path do sub_path[i] = path[i] end
jbe@203:         sub_path[#path+1] = file_key
jbe/bsw@0:         install_autoloader(obj, category, sub_path)
jbe/bsw@0:         rawset(self, key, obj)
jbe/bsw@0:         try_exec(path_string .. "/__init.lua")
jbe/bsw@0:         if merge then try_exec(merge_path_string .. "/__init.lua") end
jbe/bsw@0:         return true
jbe/bsw@0:       else
jbe/bsw@0:         return false
jbe/bsw@0:       end
jbe/bsw@0:     end
jbe/bsw@0:     if merge and try_exec(merge_path_string .. ".lua") then
jbe/bsw@0:     elseif merge and try_dir(merge_path_string .. "/") then
jbe/bsw@0:     elseif try_exec(path_string .. ".lua") then
jbe/bsw@0:     elseif try_dir(path_string .. "/") then
jbe/bsw@0:     else end
jbe/bsw@0:     return rawget(self, key)
jbe/bsw@0:   end
jbe/bsw@0:   install_autoloader(_G, nil, {})
jbe@203:   try_exec(WEBMCP_FRAMEWORK_PATH .. "env/__init.lua")
jbe@203:   try_exec(WEBMCP_BASE_PATH .. "env/__init.lua")
jbe/bsw@0: end
jbe/bsw@0: 
jbe@203: -- prohibit (unintended) definition of new global variables
jbe@203: _ENV = setmetatable({}, {
jbe@203:   __index = _G,
jbe@203:   __newindex = function()
jbe@203:     error("Setting of global variable prohibited")
jbe@203:   end
jbe@203: })
jbe@203: 
jbe@206: -- execute configurations
jbe@206: for i, config_name in ipairs(WEBMCP_CONFIG_NAMES) do
jbe@206:   execute.config(config_name)
jbe@206: end
jbe@206: 
jbe/bsw@0: -- interactive console mode
jbe@203: if WEBMCP_MODE == "interactive" then
jbe@203:   trace.disable()  -- avoids memory leakage (TODO: needs general solution for moonbridge?)
jbe/bsw@0: end
jbe/bsw@0: 
jbe@204: -- invoke moonbridge
jbe@206: if WEBMCP_MODE == "listen" then
jbe@207:   local http = require("moonbridge_http")
jbe@206:   local moonbridge_listen = listen
jbe@206:   local listeners
jbe@206:   function _G.listen(args)
jbe@206:     listeners[#listeners+1] = args
jbe@204:   end
jbe@206:   for i = 1, #extraargs/2 do
jbe@206:     local config = {}
jbe@206:     listeners = {}
jbe@206:     execute.config(config_name)
jbe@206:     for i, listener in ipairs(listeners) do
jbe@206:       listener.prepare = execute.prefork_initializers
jbe@206:       listener.connect = http.generate_handler(
jbe@206:         request.get_http_options(),
jbe@206:         function(req)
jbe@206:           execute.postfork_initializers()
jbe@206:           request.handler(req)
jbe@206:         end
jbe@206:       )
jbe@206:       --listener.finish = ???  -- TODO: requires coroutines and execute.inner() for initializers?
jbe@206:       moonbridge_listen(listener)
jbe@204:     end
jbe@204:   end
jbe@204: end
jbe@204: 
jbe@206: --[[ TODO: following lines to be moved to execute.server(...)
jbe@203: 
jbe/bsw@0: local success, error_info = xpcall(
jbe/bsw@0:   function()
jbe/bsw@0: 
jbe/bsw@0:     -- execute configuration file
jbe/bsw@0:     do
jbe/bsw@0:       local config_name = request.get_config_name()
jbe/bsw@0:       if config_name then
jbe/bsw@0:         execute.config(config_name)
jbe/bsw@0:       end
jbe/bsw@0:     end
jbe/bsw@0: 
jbe/bsw@0:     -- restore slots if coming from http redirect
jbe/bsw@0:     if cgi.params.tempstore then
jbe/bsw@0:       trace.restore_slots{}
jbe/bsw@0:       local blob = tempstore.pop(cgi.params.tempstore)
jbe/bsw@0:       if blob then slot.restore_all(blob) end
jbe/bsw@0:     end
jbe/bsw@0: 
jbe/bsw@0:     local function file_exists(filename)
jbe/bsw@0:       local file = io.open(filename, "r")
jbe/bsw@0:       if file then
jbe/bsw@0:         io.close(file)
jbe/bsw@0:         return true
jbe/bsw@0:       else
jbe/bsw@0:         return false
jbe/bsw@0:       end
jbe/bsw@0:     end
jbe/bsw@0: 
jbe@97:     if request.is_404() then
jbe/bsw@0:       request.set_status("404 Not Found")
jbe/bsw@0:       if request.get_404_route() then
jbe/bsw@0:         request.forward(request.get_404_route())
jbe/bsw@0:       else
jbe/bsw@0:         error("No 404 page set.")
jbe/bsw@0:       end
jbe/bsw@0:     elseif request.get_action() then
jbe/bsw@0:       trace.request{
jbe/bsw@0:         module = request.get_module(),
jbe/bsw@0:         action = request.get_action()
jbe/bsw@0:       }
jbe/bsw@0:       if
jbe/bsw@0:         request.get_404_route() and
jbe/bsw@0:         not file_exists(
jbe/bsw@0:           encode.action_file_path{
jbe/bsw@0:             module = request.get_module(),
jbe/bsw@0:             action = request.get_action()
jbe/bsw@0:           }
jbe/bsw@0:         )
jbe/bsw@0:       then
jbe/bsw@0:         request.set_status("404 Not Found")
jbe/bsw@0:         request.forward(request.get_404_route())
jbe/bsw@0:       else
jbe/bsw@0:         if cgi.method ~= "POST" then
jbe/bsw@0:           request.set_status("405 Method Not Allowed")
jbe/bsw@0:           cgi.add_header("Allow: POST")
jbe/bsw@0:           error("Tried to invoke an action with a GET request.")
jbe/bsw@0:         end
jbe/bsw@0:         local action_status = execute.filtered_action{
jbe/bsw@0:           module = request.get_module(),
jbe/bsw@0:           action = request.get_action(),
jbe/bsw@0:         }
jbe/bsw@0:         if not request.is_rerouted() then
jbe/bsw@0:           local routing_mode, routing_module, routing_view
jbe/bsw@0:           routing_mode   = cgi.params["_webmcp_routing." .. action_status .. ".mode"]
jbe/bsw@0:           routing_module = cgi.params["_webmcp_routing." .. action_status .. ".module"]
jbe/bsw@0:           routing_view   = cgi.params["_webmcp_routing." .. action_status .. ".view"]
jbe@113:           routing_anchor = cgi.params["_webmcp_routing." .. action_status .. ".anchor"]
jbe/bsw@0:           if not (routing_mode or routing_module or routing_view) then
jbe/bsw@0:             action_status = "default"
jbe/bsw@0:             routing_mode   = cgi.params["_webmcp_routing.default.mode"]
jbe/bsw@0:             routing_module = cgi.params["_webmcp_routing.default.module"]
jbe/bsw@0:             routing_view   = cgi.params["_webmcp_routing.default.view"]
jbe@113:             routing_anchor = cgi.params["_webmcp_routing.default.anchor"]
jbe/bsw@0:           end
jbe/bsw@0:           assert(routing_module, "Routing information has no module.")
jbe/bsw@0:           assert(routing_view,   "Routing information has no view.")
jbe/bsw@0:           if routing_mode == "redirect" then
jbe/bsw@0:             local routing_params = {}
jbe/bsw@0:             for key, value in pairs(cgi.params) do
jbe/bsw@0:               local status, stripped_key = string.match(
jbe/bsw@0:                 key, "^_webmcp_routing%.([^%.]*)%.params%.(.*)$"
jbe/bsw@0:               )
jbe/bsw@0:               if status == action_status then
jbe/bsw@0:                 routing_params[stripped_key] = value
jbe/bsw@0:               end
jbe/bsw@0:             end
jbe/bsw@0:             request.redirect{
jbe/bsw@0:               module = routing_module,
jbe/bsw@0:               view   = routing_view,
jbe/bsw@0:               id     = cgi.params["_webmcp_routing." .. action_status .. ".id"],
jbe@113:               params = routing_params,
jbe@113:               anchor = routing_anchor
jbe/bsw@0:             }
jbe/bsw@0:           elseif routing_mode == "forward" then
jbe/bsw@0:             request.forward{ module = routing_module, view = routing_view }
jbe/bsw@0:           else
jbe/bsw@0:             error("Missing or unknown routing mode in request parameters.")
jbe/bsw@0:           end
jbe/bsw@0:         end
jbe/bsw@0:       end
jbe/bsw@0:     else
jbe/bsw@0:       -- no action
jbe/bsw@0:       trace.request{
jbe/bsw@0:         module = request.get_module(),
jbe/bsw@0:         view   = request.get_view()
jbe/bsw@0:       }
jbe/bsw@0:       if
jbe/bsw@0:         request.get_404_route() and
jbe/bsw@0:         not file_exists(
jbe/bsw@0:           encode.view_file_path{
jbe/bsw@0:             module = request.get_module(),
jbe/bsw@0:             view   = request.get_view()
jbe/bsw@0:           }
jbe/bsw@0:         )
jbe/bsw@0:       then
jbe/bsw@0:         request.set_status("404 Not Found")
jbe/bsw@0:         request.forward(request.get_404_route())
jbe/bsw@0:       end
jbe/bsw@0:     end
jbe/bsw@0: 
jbe/bsw@0:     if not request.get_redirect_data() then
jbe@3:       request.process_forward()
jbe/bsw@2:       local view = request.get_view()
jbe/bsw@2:       if string.find(view, "^_") then
jbe/bsw@2:         error("Tried to call a private view (prefixed with underscore).")
jbe/bsw@2:       end
jbe/bsw@0:       execute.filtered_view{
jbe/bsw@0:         module = request.get_module(),
jbe/bsw@2:         view   = view,
jbe/bsw@0:       }
jbe/bsw@0:     end
jbe/bsw@0: 
jbe/bsw@0:     -- force error due to missing absolute base URL until its too late to display error message
jbe/bsw@0:     --if request.get_redirect_data() then
jbe/bsw@0:     --  request.get_absolute_baseurl()
jbe/bsw@0:     --end
jbe/bsw@0: 
jbe/bsw@0:   end,
jbe/bsw@0: 
jbe/bsw@0:   function(errobj)
jbe/bsw@0:     return {
jbe/bsw@0:       errobj = errobj,
jbe/bsw@0:       stacktrace = string.gsub(
jbe/bsw@0:         debug.traceback('', 2),
jbe/bsw@0:         "^\r?\n?stack traceback:\r?\n?", ""
jbe/bsw@0:       )
jbe/bsw@0:     }
jbe/bsw@0:   end
jbe/bsw@0: )
jbe/bsw@0: 
jbe/bsw@0: if not success then trace.error{} end
jbe/bsw@0: 
jbe/bsw@0: -- laufzeitermittlung
jbe@65: trace.exectime{ real = extos.monotonic_hires_time(), cpu = os.clock() }
jbe/bsw@0: 
jbe/bsw@0: slot.select('trace', trace.render)  -- render trace information
jbe/bsw@0: 
jbe/bsw@0: local redirect_data = request.get_redirect_data()
jbe/bsw@0: 
jbe/bsw@0: -- log error and switch to error layout, unless success
jbe/bsw@0: if not success then
jbe/bsw@0:   local errobj     = error_info.errobj
jbe/bsw@0:   local stacktrace = error_info.stacktrace
jbe/bsw@11:   if not request.get_status() and not request.get_json_request_slots() then
jbe/bsw@0:     request.set_status("500 Internal Server Error")
jbe/bsw@0:   end
jbe/bsw@0:   slot.set_layout('system_error')
jbe/bsw@0:   slot.select('system_error', function()
jbe/bsw@0:     if getmetatable(errobj) == mondelefant.errorobject_metatable then
jbe/bsw@0:       slot.put(
jbe/bsw@0:         "<p>Database error of class <b>",
jbe/bsw@0:         encode.html(errobj.code),
jbe/bsw@0:         "</b> occured:<br/><b>",
jbe/bsw@0:         encode.html(errobj.message),
jbe/bsw@0:         "</b></p>"
jbe/bsw@0:       )
jbe/bsw@0:     else
jbe/bsw@0:       slot.put("<p><b>", encode.html(tostring(errobj)), "</b></p>")
jbe/bsw@0:     end
jbe/bsw@0:     slot.put("<p>Stack trace follows:<br/>")
jbe/bsw@0:     slot.put(encode.html_newlines(encode.html(stacktrace)))
jbe/bsw@0:     slot.put("</p>")
jbe/bsw@0:   end)
jbe/bsw@0: elseif redirect_data then
jbe/bsw@0:   local redirect_params = {}
jbe/bsw@0:   for key, value in pairs(redirect_data.params) do
jbe/bsw@0:     redirect_params[key] = value
jbe/bsw@0:   end
jbe/bsw@0:   local slot_dump = slot.dump_all()
jbe/bsw@0:   if slot_dump ~= "" then
jbe/bsw@0:     redirect_params.tempstore = tempstore.save(slot_dump)
jbe/bsw@0:   end
jbe/bsw@11:   local json_request_slots = request.get_json_request_slots()
jbe/bsw@11:   if json_request_slots then
jbe/bsw@11:     redirect_params["_webmcp_json_slots[]"] = json_request_slots  
jbe/bsw@11:   end
jbe/bsw@0:   cgi.redirect(
jbe/bsw@0:     encode.url{
jbe/bsw@0:       base   = request.get_absolute_baseurl(),
jbe/bsw@0:       module = redirect_data.module,
jbe/bsw@0:       view   = redirect_data.view,
jbe/bsw@0:       id     = redirect_data.id,
jbe@113:       params = redirect_params,
jbe@113:       anchor = redirect_data.anchor
jbe/bsw@0:     }
jbe/bsw@0:   )
jbe/bsw@0:   cgi.send_data()
jbe/bsw@0: end
jbe/bsw@0: 
jbe/bsw@0: if not success or not redirect_data then
jbe/bsw@0: 
jbe/bsw@0:   local http_status = request.get_status()
jbe/bsw@0:   if http_status then
jbe/bsw@0:     cgi.set_status(http_status)
jbe/bsw@0:   end
jbe/bsw@0: 
jbe@1:   local json_request_slots = request.get_json_request_slots()
jbe@1:   if json_request_slots then
jbe@1:     cgi.set_content_type('application/json')
jbe@1:     local data = {}
jbe@1:     for idx, slot_ident in ipairs(json_request_slots) do
jbe@1:       data[slot_ident] = slot.get_content(slot_ident)
jbe/bsw@0:     end
jbe@1:     cgi.send_data(encode.json(data))
jbe/bsw@0:   else
jbe/bsw@0:     cgi.set_content_type(slot.get_content_type())
jbe/bsw@0:     cgi.send_data(slot.render_layout())
jbe/bsw@0:   end
jbe/bsw@0: end
jbe/bsw@0: 
jbe@204: --]]
jbe@204: