webmcp

annotate framework/cgi-bin/webmcp.lua @ 37:fb7b7ac6d560

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author Daniel Poelzleithner <poelzi@poelzi.org>
date Sat Oct 09 01:35:40 2010 +0200 (2010-10-09)
parents ea2e8f3a2776
children 3198806c7904
rev   line source
jbe/bsw@0 1 #!/usr/bin/env lua
jbe/bsw@0 2
jbe@23 3 _WEBMCP_VERSION = "1.1.1"
jbe@1 4
jbe/bsw@0 5 -- include "../lib/" in search path for libraries
poelzi@28 6 if not WEBMCP_PATH then
poelzi@28 7 WEBMCP_PATH = "../"
poelzi@28 8 end
poelzi@28 9
jbe/bsw@0 10 do
poelzi@28 11 package.path = WEBMCP_PATH..'lib/?.lua;' .. package.path
jbe/bsw@0 12 -- find out which file name extension shared libraries have
jbe/bsw@0 13 local slib_exts = {}
jbe/bsw@0 14 for ext in string.gmatch(package.cpath, "%?%.([A-Za-z0-9_-]+)") do
jbe/bsw@0 15 slib_exts[ext] = true
jbe/bsw@0 16 end
jbe/bsw@0 17 local paths = {}
jbe/bsw@0 18 for ext in pairs(slib_exts) do
poelzi@28 19 paths[#paths+1] = WEBMCP_PATH.."accelerator/?." .. ext
jbe/bsw@0 20 end
jbe/bsw@0 21 for ext in pairs(slib_exts) do
poelzi@28 22 paths[#paths+1] = WEBMCP_PATH.."lib/?." .. ext
jbe/bsw@0 23 end
jbe/bsw@0 24 paths[#paths+1] = package.cpath
jbe/bsw@0 25 package.cpath = table.concat(paths, ";")
jbe/bsw@0 26 end
jbe/bsw@0 27
jbe/bsw@0 28 -- load os extensions for lua
jbe/bsw@0 29 -- (should happen as soon as possible due to run time measurement)
jbe/bsw@0 30 require 'extos'
jbe/bsw@0 31
jbe/bsw@0 32 -- load nihil library
jbe/bsw@0 33 require 'nihil'
jbe/bsw@0 34
jbe/bsw@0 35 -- load random generator library
jbe/bsw@0 36 require 'multirand'
jbe/bsw@0 37
jbe/bsw@0 38 -- load rocketcgi library and map it to cgi
jbe/bsw@0 39 do
jbe/bsw@0 40 local option = os.getenv("WEBMCP_INTERACTIVE")
jbe/bsw@0 41 if option and option ~= "" and option ~= "0" then
jbe/bsw@0 42 cgi = nil
jbe/bsw@0 43 else
jbe/bsw@0 44 require 'rocketcgi'
jbe/bsw@0 45 cgi = rocketcgi
jbe/bsw@0 46 end
jbe/bsw@0 47 end
jbe/bsw@0 48
jbe/bsw@0 49 -- load database access library with object relational mapper
jbe/bsw@0 50 require 'mondelefant'
jbe/bsw@0 51 mondelefant.connection_prototype.error_objects = true
jbe/bsw@0 52
jbe/bsw@0 53 -- load type system "atom"
jbe/bsw@0 54 require 'atom'
jbe/bsw@0 55
jbe/bsw@0 56 -- load mondelefant atom connector
jbe/bsw@0 57 require 'mondelefant_atom_connector'
jbe/bsw@0 58
jbe/bsw@0 59 --[[--
jbe/bsw@0 60 cloned_table = -- newly generated table
jbe/bsw@0 61 table.new(
jbe/bsw@0 62 table_or_nil -- keys of a given table will be copied to the new table
jbe/bsw@0 63 )
jbe/bsw@0 64
jbe/bsw@0 65 If a table is given, then a cloned table is returned.
jbe/bsw@0 66 If nil is given, then a new empty table is returned.
jbe/bsw@0 67
jbe/bsw@0 68 --]]--
jbe/bsw@0 69 function table.new(tbl)
jbe/bsw@0 70 new_tbl = {}
jbe/bsw@0 71 if tbl then
jbe/bsw@0 72 for key, value in pairs(tbl) do
jbe/bsw@0 73 new_tbl[key] = value
jbe/bsw@0 74 end
jbe/bsw@0 75 end
jbe/bsw@0 76 return new_tbl
jbe/bsw@0 77 end
jbe/bsw@0 78 --//--
jbe/bsw@0 79
jbe/bsw@0 80 --[[--
jbe/bsw@0 81 at_exit(
jbe/bsw@0 82 func -- function to be called before the process is ending
jbe/bsw@0 83 )
jbe/bsw@0 84
jbe/bsw@0 85 Registers a function to be called before the CGI process is exiting.
jbe/bsw@0 86 --]]--
jbe/bsw@0 87 do
jbe/bsw@0 88 local exit_handlers = {}
jbe/bsw@0 89 function at_exit(func)
jbe/bsw@0 90 table.insert(exit_handlers, func)
jbe/bsw@0 91 end
jbe/bsw@0 92 function exit(code)
jbe/bsw@0 93 for i = #exit_handlers, 1, -1 do
jbe/bsw@0 94 exit_handlers[i]()
jbe/bsw@0 95 end
jbe/bsw@0 96 os.exit(code)
jbe/bsw@0 97 end
jbe/bsw@0 98 end
jbe/bsw@0 99 --//--
jbe/bsw@0 100
jbe/bsw@0 101 --[[--
jbe/bsw@0 102 app -- table to store an application state
jbe/bsw@0 103
jbe/bsw@0 104 'app' is a global table for storing any application state data
jbe/bsw@0 105 --]]--
jbe/bsw@0 106 app = {}
jbe/bsw@0 107 --//--
jbe/bsw@0 108
jbe/bsw@0 109 --[[--
jbe/bsw@0 110 config -- table to store application configuration
jbe/bsw@0 111
jbe/bsw@0 112 'config' is a global table, which can be modified by a config file of an application to modify the behaviour of that application.
jbe/bsw@0 113 --]]--
jbe/bsw@0 114 config = {}
jbe/bsw@0 115 --//--
jbe/bsw@0 116
jbe/bsw@0 117 -- autoloader system for WebMCP environment "../env/",
jbe/bsw@0 118 -- application environment extensions "$WEBMCP_APP_BASE/env/"
jbe/bsw@0 119 -- and models "$WEBMCP_APP_BASE/model/"
jbe/bsw@0 120 do
jbe/bsw@0 121 local app_base = os.getenv("WEBMCP_APP_BASEPATH")
jbe/bsw@0 122 if not app_base then
jbe/bsw@0 123 error(
jbe/bsw@0 124 "Failed to initialize autoloader " ..
jbe/bsw@0 125 "due to unset WEBMCP_APP_BASEPATH environment variable."
jbe/bsw@0 126 )
jbe/bsw@0 127 end
jbe/bsw@0 128 local weakkey_mt = { __mode = "k" }
jbe/bsw@0 129 local autoloader_category = setmetatable({}, weakkey_mt)
jbe/bsw@0 130 local autoloader_path = setmetatable({}, weakkey_mt)
jbe/bsw@0 131 local autoloader_mt = {}
jbe/bsw@0 132 local function install_autoloader(self, category, path)
jbe/bsw@0 133 autoloader_category[self] = category
jbe/bsw@0 134 autoloader_path[self] = path
jbe/bsw@0 135 setmetatable(self, autoloader_mt)
jbe/bsw@0 136 end
jbe/bsw@0 137 local function try_exec(filename)
jbe/bsw@0 138 local file = io.open(filename, "r")
jbe/bsw@0 139 if file then
jbe/bsw@0 140 local filedata = file:read("*a")
jbe/bsw@0 141 io.close(file)
jbe/bsw@0 142 local func, errmsg = loadstring(filedata, "=" .. filename)
jbe/bsw@0 143 if func then
jbe/bsw@0 144 func()
jbe/bsw@0 145 return true
jbe/bsw@0 146 else
jbe/bsw@0 147 error(errmsg, 0)
jbe/bsw@0 148 end
jbe/bsw@0 149 else
jbe/bsw@0 150 return false
jbe/bsw@0 151 end
jbe/bsw@0 152 end
jbe/bsw@0 153 local function compose_path_string(base, path, key)
jbe/bsw@0 154 return string.gsub(
jbe/bsw@0 155 base .. table.concat(path, "/") .. "/" .. key, "/+", "/"
jbe/bsw@0 156 )
jbe/bsw@0 157 end
jbe/bsw@0 158 function autoloader_mt.__index(self, key)
jbe/bsw@0 159 local category, base_path, merge_base_path, file_key
jbe/bsw@0 160 local merge = false
jbe/bsw@0 161 if
jbe/bsw@0 162 string.find(key, "^[a-z_][A-Za-z0-9_]*$") and
jbe/bsw@0 163 not string.find(key, "^__")
jbe/bsw@0 164 then
jbe/bsw@0 165 category = "env"
poelzi@28 166 base_path = WEBMCP_PATH.."/env/"
jbe/bsw@0 167 merge = true
jbe/bsw@0 168 merge_base_path = app_base .. "/env/"
jbe/bsw@0 169 file_key = key
jbe/bsw@0 170 elseif string.find(key, "^[A-Z][A-Za-z0-9]*$") then
jbe/bsw@0 171 category = "model"
jbe/bsw@0 172 base_path = app_base .. "/model/"
jbe/bsw@0 173 local first = true
jbe/bsw@0 174 file_key = string.gsub(key, "[A-Z]",
jbe/bsw@0 175 function(c)
jbe/bsw@0 176 if first then
jbe/bsw@0 177 first = false
jbe/bsw@0 178 return string.lower(c)
jbe/bsw@0 179 else
jbe/bsw@0 180 return "_" .. string.lower(c)
jbe/bsw@0 181 end
jbe/bsw@0 182 end
jbe/bsw@0 183 )
jbe/bsw@0 184 else
jbe/bsw@0 185 return
jbe/bsw@0 186 end
jbe/bsw@0 187 local required_category = autoloader_category[self]
jbe/bsw@0 188 if required_category and required_category ~= category then return end
jbe/bsw@0 189 local path = autoloader_path[self]
jbe/bsw@0 190 local path_string = compose_path_string(base_path, path, file_key)
jbe/bsw@0 191 local merge_path_string
jbe/bsw@0 192 if merge then
jbe/bsw@0 193 merge_path_string = compose_path_string(
jbe/bsw@0 194 merge_base_path, path, file_key
jbe/bsw@0 195 )
jbe/bsw@0 196 end
jbe/bsw@0 197 local function try_dir(dirname)
jbe/bsw@0 198 local dir = io.open(dirname)
jbe/bsw@0 199 if dir then
jbe/bsw@0 200 io.close(dir)
jbe/bsw@0 201 local obj = {}
jbe/bsw@0 202 local sub_path = {}
jbe/bsw@0 203 for i, v in ipairs(path) do sub_path[i] = v end
jbe/bsw@0 204 table.insert(sub_path, file_key)
jbe/bsw@0 205 install_autoloader(obj, category, sub_path)
jbe/bsw@0 206 rawset(self, key, obj)
jbe/bsw@0 207 try_exec(path_string .. "/__init.lua")
jbe/bsw@0 208 if merge then try_exec(merge_path_string .. "/__init.lua") end
jbe/bsw@0 209 return true
jbe/bsw@0 210 else
jbe/bsw@0 211 return false
jbe/bsw@0 212 end
jbe/bsw@0 213 end
jbe/bsw@0 214 if merge and try_exec(merge_path_string .. ".lua") then
jbe/bsw@0 215 elseif merge and try_dir(merge_path_string .. "/") then
jbe/bsw@0 216 elseif try_exec(path_string .. ".lua") then
jbe/bsw@0 217 elseif try_dir(path_string .. "/") then
jbe/bsw@0 218 else end
jbe/bsw@0 219 return rawget(self, key)
jbe/bsw@0 220 end
jbe/bsw@0 221 install_autoloader(_G, nil, {})
poelzi@28 222 try_exec(WEBMCP_PATH.."env/__init.lua")
jbe/bsw@0 223 end
jbe/bsw@0 224
jbe/bsw@0 225 -- interactive console mode
jbe/bsw@0 226 if not cgi then
jbe/bsw@0 227 local config_name = request.get_config_name()
jbe/bsw@0 228 if config_name then
jbe/bsw@0 229 execute.config(config_name)
jbe/bsw@0 230 end
jbe/bsw@0 231 return
jbe/bsw@0 232 end
jbe/bsw@0 233
jbe/bsw@0 234 local success, error_info = xpcall(
jbe/bsw@0 235 function()
jbe/bsw@0 236
jbe/bsw@0 237 -- execute configuration file
jbe/bsw@0 238 do
jbe/bsw@0 239 local config_name = request.get_config_name()
jbe/bsw@0 240 if config_name then
jbe/bsw@0 241 execute.config(config_name)
jbe/bsw@0 242 end
jbe/bsw@0 243 end
jbe/bsw@0 244
jbe/bsw@0 245 -- restore slots if coming from http redirect
jbe/bsw@0 246 if cgi.params.tempstore then
jbe/bsw@0 247 trace.restore_slots{}
jbe/bsw@0 248 local blob = tempstore.pop(cgi.params.tempstore)
jbe/bsw@0 249 if blob then slot.restore_all(blob) end
jbe/bsw@0 250 end
jbe/bsw@0 251
jbe/bsw@0 252 local function file_exists(filename)
jbe/bsw@0 253 local file = io.open(filename, "r")
jbe/bsw@0 254 if file then
jbe/bsw@0 255 io.close(file)
jbe/bsw@0 256 return true
jbe/bsw@0 257 else
jbe/bsw@0 258 return false
jbe/bsw@0 259 end
jbe/bsw@0 260 end
jbe/bsw@0 261
jbe/bsw@0 262 if cgi.params["_webmcp_404"] then
jbe/bsw@0 263 request.force_absolute_baseurl()
jbe/bsw@0 264 request.set_status("404 Not Found")
jbe/bsw@0 265 if request.get_404_route() then
jbe/bsw@0 266 request.forward(request.get_404_route())
jbe/bsw@0 267 else
jbe/bsw@0 268 error("No 404 page set.")
jbe/bsw@0 269 end
jbe/bsw@0 270 elseif request.get_action() then
jbe/bsw@0 271 trace.request{
jbe/bsw@0 272 module = request.get_module(),
jbe/bsw@0 273 action = request.get_action()
jbe/bsw@0 274 }
jbe/bsw@0 275 if
jbe/bsw@0 276 request.get_404_route() and
jbe/bsw@0 277 not file_exists(
jbe/bsw@0 278 encode.action_file_path{
jbe/bsw@0 279 module = request.get_module(),
jbe/bsw@0 280 action = request.get_action()
jbe/bsw@0 281 }
jbe/bsw@0 282 )
jbe/bsw@0 283 then
jbe/bsw@0 284 request.set_status("404 Not Found")
jbe/bsw@0 285 request.forward(request.get_404_route())
jbe/bsw@0 286 else
jbe/bsw@0 287 if cgi.method ~= "POST" then
jbe/bsw@0 288 request.set_status("405 Method Not Allowed")
jbe/bsw@0 289 cgi.add_header("Allow: POST")
jbe/bsw@0 290 error("Tried to invoke an action with a GET request.")
jbe/bsw@0 291 end
jbe/bsw@0 292 local action_status = execute.filtered_action{
jbe/bsw@0 293 module = request.get_module(),
jbe/bsw@0 294 action = request.get_action(),
jbe/bsw@0 295 }
jbe/bsw@0 296 if not request.is_rerouted() then
jbe/bsw@0 297 local routing_mode, routing_module, routing_view
jbe/bsw@0 298 routing_mode = cgi.params["_webmcp_routing." .. action_status .. ".mode"]
jbe/bsw@0 299 routing_module = cgi.params["_webmcp_routing." .. action_status .. ".module"]
jbe/bsw@0 300 routing_view = cgi.params["_webmcp_routing." .. action_status .. ".view"]
jbe/bsw@0 301 if not (routing_mode or routing_module or routing_view) then
jbe/bsw@0 302 action_status = "default"
jbe/bsw@0 303 routing_mode = cgi.params["_webmcp_routing.default.mode"]
jbe/bsw@0 304 routing_module = cgi.params["_webmcp_routing.default.module"]
jbe/bsw@0 305 routing_view = cgi.params["_webmcp_routing.default.view"]
jbe/bsw@0 306 end
jbe/bsw@0 307 assert(routing_module, "Routing information has no module.")
jbe/bsw@0 308 assert(routing_view, "Routing information has no view.")
jbe/bsw@0 309 if routing_mode == "redirect" then
jbe/bsw@0 310 local routing_params = {}
jbe/bsw@0 311 for key, value in pairs(cgi.params) do
jbe/bsw@0 312 local status, stripped_key = string.match(
jbe/bsw@0 313 key, "^_webmcp_routing%.([^%.]*)%.params%.(.*)$"
jbe/bsw@0 314 )
jbe/bsw@0 315 if status == action_status then
jbe/bsw@0 316 routing_params[stripped_key] = value
jbe/bsw@0 317 end
jbe/bsw@0 318 end
jbe/bsw@0 319 request.redirect{
jbe/bsw@0 320 module = routing_module,
jbe/bsw@0 321 view = routing_view,
jbe/bsw@0 322 id = cgi.params["_webmcp_routing." .. action_status .. ".id"],
jbe/bsw@0 323 params = routing_params
jbe/bsw@0 324 }
jbe/bsw@0 325 elseif routing_mode == "forward" then
jbe/bsw@0 326 request.forward{ module = routing_module, view = routing_view }
jbe/bsw@0 327 else
jbe/bsw@0 328 error("Missing or unknown routing mode in request parameters.")
jbe/bsw@0 329 end
jbe/bsw@0 330 end
jbe/bsw@0 331 end
jbe/bsw@0 332 else
jbe/bsw@0 333 -- no action
jbe/bsw@0 334 trace.request{
jbe/bsw@0 335 module = request.get_module(),
jbe/bsw@0 336 view = request.get_view()
jbe/bsw@0 337 }
jbe/bsw@0 338 if
jbe/bsw@0 339 request.get_404_route() and
jbe/bsw@0 340 not file_exists(
jbe/bsw@0 341 encode.view_file_path{
jbe/bsw@0 342 module = request.get_module(),
jbe/bsw@0 343 view = request.get_view()
jbe/bsw@0 344 }
jbe/bsw@0 345 )
jbe/bsw@0 346 then
jbe/bsw@0 347 request.set_status("404 Not Found")
jbe/bsw@0 348 request.forward(request.get_404_route())
jbe/bsw@0 349 end
jbe/bsw@0 350 end
jbe/bsw@0 351
jbe/bsw@0 352 if not request.get_redirect_data() then
jbe@3 353 request.process_forward()
jbe/bsw@2 354 local view = request.get_view()
jbe/bsw@2 355 if string.find(view, "^_") then
jbe/bsw@2 356 error("Tried to call a private view (prefixed with underscore).")
jbe/bsw@2 357 end
jbe/bsw@0 358 execute.filtered_view{
jbe/bsw@0 359 module = request.get_module(),
jbe/bsw@2 360 view = view,
jbe/bsw@0 361 }
jbe/bsw@0 362 end
jbe/bsw@0 363
jbe/bsw@0 364 -- force error due to missing absolute base URL until its too late to display error message
jbe/bsw@0 365 --if request.get_redirect_data() then
jbe/bsw@0 366 -- request.get_absolute_baseurl()
jbe/bsw@0 367 --end
jbe/bsw@0 368
jbe/bsw@0 369 end,
jbe/bsw@0 370
jbe/bsw@0 371 function(errobj)
jbe/bsw@0 372 return {
jbe/bsw@0 373 errobj = errobj,
jbe/bsw@0 374 stacktrace = string.gsub(
jbe/bsw@0 375 debug.traceback('', 2),
jbe/bsw@0 376 "^\r?\n?stack traceback:\r?\n?", ""
jbe/bsw@0 377 )
jbe/bsw@0 378 }
jbe/bsw@0 379 end
jbe/bsw@0 380 )
jbe/bsw@0 381
jbe/bsw@0 382 if not success then trace.error{} end
jbe/bsw@0 383
jbe/bsw@0 384 -- laufzeitermittlung
jbe/bsw@0 385 trace.exectime{ real = os.monotonic_hires_time(), cpu = os.clock() }
jbe/bsw@0 386
jbe/bsw@0 387 slot.select('trace', trace.render) -- render trace information
jbe/bsw@0 388
jbe/bsw@0 389 local redirect_data = request.get_redirect_data()
jbe/bsw@0 390
jbe/bsw@0 391 -- log error and switch to error layout, unless success
jbe/bsw@0 392 if not success then
jbe/bsw@0 393 local errobj = error_info.errobj
jbe/bsw@0 394 local stacktrace = error_info.stacktrace
jbe/bsw@11 395 if not request.get_status() and not request.get_json_request_slots() then
jbe/bsw@0 396 request.set_status("500 Internal Server Error")
jbe/bsw@0 397 end
jbe/bsw@0 398 slot.set_layout('system_error')
jbe/bsw@0 399 slot.select('system_error', function()
jbe/bsw@0 400 if getmetatable(errobj) == mondelefant.errorobject_metatable then
jbe/bsw@0 401 slot.put(
jbe/bsw@0 402 "<p>Database error of class <b>",
jbe/bsw@0 403 encode.html(errobj.code),
jbe/bsw@0 404 "</b> occured:<br/><b>",
jbe/bsw@0 405 encode.html(errobj.message),
jbe/bsw@0 406 "</b></p>"
jbe/bsw@0 407 )
jbe/bsw@0 408 else
jbe/bsw@0 409 slot.put("<p><b>", encode.html(tostring(errobj)), "</b></p>")
jbe/bsw@0 410 end
jbe/bsw@0 411 slot.put("<p>Stack trace follows:<br/>")
jbe/bsw@0 412 slot.put(encode.html_newlines(encode.html(stacktrace)))
jbe/bsw@0 413 slot.put("</p>")
jbe/bsw@0 414 end)
jbe/bsw@0 415 elseif redirect_data then
jbe/bsw@0 416 local redirect_params = {}
jbe/bsw@0 417 for key, value in pairs(redirect_data.params) do
jbe/bsw@0 418 redirect_params[key] = value
jbe/bsw@0 419 end
jbe/bsw@0 420 local slot_dump = slot.dump_all()
jbe/bsw@0 421 if slot_dump ~= "" then
jbe/bsw@0 422 redirect_params.tempstore = tempstore.save(slot_dump)
jbe/bsw@0 423 end
jbe/bsw@11 424 local json_request_slots = request.get_json_request_slots()
jbe/bsw@11 425 if json_request_slots then
jbe/bsw@11 426 redirect_params["_webmcp_json_slots[]"] = json_request_slots
jbe/bsw@11 427 end
jbe/bsw@0 428 cgi.redirect(
jbe/bsw@0 429 encode.url{
jbe/bsw@0 430 base = request.get_absolute_baseurl(),
jbe/bsw@0 431 module = redirect_data.module,
jbe/bsw@0 432 view = redirect_data.view,
jbe/bsw@0 433 id = redirect_data.id,
jbe/bsw@0 434 params = redirect_params
jbe/bsw@0 435 }
jbe/bsw@0 436 )
jbe/bsw@0 437 cgi.send_data()
jbe/bsw@0 438 end
jbe/bsw@0 439
jbe/bsw@0 440 if not success or not redirect_data then
jbe/bsw@0 441
jbe/bsw@0 442 local http_status = request.get_status()
jbe/bsw@0 443 if http_status then
jbe/bsw@0 444 cgi.set_status(http_status)
jbe/bsw@0 445 end
jbe/bsw@0 446
jbe@1 447 local json_request_slots = request.get_json_request_slots()
jbe@1 448 if json_request_slots then
jbe@1 449 cgi.set_content_type('application/json')
jbe@1 450 local data = {}
jbe@1 451 for idx, slot_ident in ipairs(json_request_slots) do
jbe@1 452 data[slot_ident] = slot.get_content(slot_ident)
jbe/bsw@0 453 end
jbe@1 454 cgi.send_data(encode.json(data))
jbe/bsw@0 455 else
jbe/bsw@0 456 cgi.set_content_type(slot.get_content_type())
jbe/bsw@0 457 cgi.send_data(slot.render_layout())
jbe/bsw@0 458 end
jbe/bsw@0 459 end
jbe/bsw@0 460
jbe/bsw@0 461 exit()

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