webmcp

annotate framework/cgi-bin/webmcp.lua @ 65:a54cc7dcabf1

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"extos" library calls via "extos." instead of "os."
author jbe
date Tue Apr 17 15:20:42 2012 +0200 (2012-04-17)
parents 3d43a5cf17c1
children ebdc20b7048b
rev   line source
jbe/bsw@0 1 #!/usr/bin/env lua
jbe/bsw@0 2
jbe@64 3 _WEBMCP_VERSION = "1.1.4"
jbe@64 4
jbe@64 5 -- Lua 5.1 compatibility
jbe@64 6 if not table.unpack then
jbe@64 7 table.unpack = unpack
jbe@64 8 end
jbe@1 9
jbe/bsw@0 10 -- include "../lib/" in search path for libraries
poelzi@28 11 if not WEBMCP_PATH then
poelzi@28 12 WEBMCP_PATH = "../"
poelzi@28 13 end
poelzi@28 14
jbe/bsw@0 15 do
jbe@43 16 package.path = WEBMCP_PATH .. 'lib/?.lua;' .. package.path
jbe/bsw@0 17 -- find out which file name extension shared libraries have
jbe/bsw@0 18 local slib_exts = {}
jbe/bsw@0 19 for ext in string.gmatch(package.cpath, "%?%.([A-Za-z0-9_-]+)") do
jbe/bsw@0 20 slib_exts[ext] = true
jbe/bsw@0 21 end
jbe/bsw@0 22 local paths = {}
jbe/bsw@0 23 for ext in pairs(slib_exts) do
jbe@43 24 paths[#paths+1] = WEBMCP_PATH .. "accelerator/?." .. ext
jbe/bsw@0 25 end
jbe/bsw@0 26 for ext in pairs(slib_exts) do
jbe@43 27 paths[#paths+1] = WEBMCP_PATH .. "lib/?." .. ext
jbe/bsw@0 28 end
jbe/bsw@0 29 paths[#paths+1] = package.cpath
jbe/bsw@0 30 package.cpath = table.concat(paths, ";")
jbe/bsw@0 31 end
jbe/bsw@0 32
jbe/bsw@0 33 -- load os extensions for lua
jbe/bsw@0 34 -- (should happen as soon as possible due to run time measurement)
jbe@64 35 extos = require 'extos'
jbe/bsw@0 36
jbe/bsw@0 37 -- load nihil library
jbe@64 38 nihil = require 'nihil'
jbe/bsw@0 39
jbe/bsw@0 40 -- load random generator library
jbe@64 41 multirand = require 'multirand'
jbe/bsw@0 42
jbe/bsw@0 43 -- load rocketcgi library and map it to cgi
jbe/bsw@0 44 do
jbe/bsw@0 45 local option = os.getenv("WEBMCP_INTERACTIVE")
jbe/bsw@0 46 if option and option ~= "" and option ~= "0" then
jbe/bsw@0 47 cgi = nil
jbe/bsw@0 48 else
jbe@64 49 rocketcgi = require 'rocketcgi'
jbe/bsw@0 50 cgi = rocketcgi
jbe/bsw@0 51 end
jbe/bsw@0 52 end
jbe/bsw@0 53
jbe/bsw@0 54 -- load database access library with object relational mapper
jbe@64 55 mondelefant = require 'mondelefant'
jbe/bsw@0 56 mondelefant.connection_prototype.error_objects = true
jbe/bsw@0 57
jbe/bsw@0 58 -- load type system "atom"
jbe@64 59 atom = require 'atom'
jbe/bsw@0 60
jbe/bsw@0 61 -- load mondelefant atom connector
jbe/bsw@0 62 require 'mondelefant_atom_connector'
jbe/bsw@0 63
jbe/bsw@0 64 --[[--
jbe/bsw@0 65 cloned_table = -- newly generated table
jbe/bsw@0 66 table.new(
jbe/bsw@0 67 table_or_nil -- keys of a given table will be copied to the new table
jbe/bsw@0 68 )
jbe/bsw@0 69
jbe/bsw@0 70 If a table is given, then a cloned table is returned.
jbe/bsw@0 71 If nil is given, then a new empty table is returned.
jbe/bsw@0 72
jbe/bsw@0 73 --]]--
jbe/bsw@0 74 function table.new(tbl)
jbe/bsw@0 75 new_tbl = {}
jbe/bsw@0 76 if tbl then
jbe/bsw@0 77 for key, value in pairs(tbl) do
jbe/bsw@0 78 new_tbl[key] = value
jbe/bsw@0 79 end
jbe/bsw@0 80 end
jbe/bsw@0 81 return new_tbl
jbe/bsw@0 82 end
jbe/bsw@0 83 --//--
jbe/bsw@0 84
jbe/bsw@0 85 --[[--
jbe/bsw@0 86 at_exit(
jbe/bsw@0 87 func -- function to be called before the process is ending
jbe/bsw@0 88 )
jbe/bsw@0 89
jbe/bsw@0 90 Registers a function to be called before the CGI process is exiting.
jbe/bsw@0 91 --]]--
jbe/bsw@0 92 do
jbe/bsw@0 93 local exit_handlers = {}
jbe/bsw@0 94 function at_exit(func)
jbe/bsw@0 95 table.insert(exit_handlers, func)
jbe/bsw@0 96 end
jbe/bsw@0 97 function exit(code)
jbe/bsw@0 98 for i = #exit_handlers, 1, -1 do
jbe/bsw@0 99 exit_handlers[i]()
jbe/bsw@0 100 end
jbe/bsw@0 101 os.exit(code)
jbe/bsw@0 102 end
jbe/bsw@0 103 end
jbe/bsw@0 104 --//--
jbe/bsw@0 105
jbe/bsw@0 106 --[[--
jbe/bsw@0 107 app -- table to store an application state
jbe/bsw@0 108
jbe/bsw@0 109 'app' is a global table for storing any application state data
jbe/bsw@0 110 --]]--
jbe/bsw@0 111 app = {}
jbe/bsw@0 112 --//--
jbe/bsw@0 113
jbe/bsw@0 114 --[[--
jbe/bsw@0 115 config -- table to store application configuration
jbe/bsw@0 116
jbe/bsw@0 117 '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@0 118 --]]--
jbe/bsw@0 119 config = {}
jbe/bsw@0 120 --//--
jbe/bsw@0 121
jbe/bsw@0 122 -- autoloader system for WebMCP environment "../env/",
jbe/bsw@0 123 -- application environment extensions "$WEBMCP_APP_BASE/env/"
jbe/bsw@0 124 -- and models "$WEBMCP_APP_BASE/model/"
jbe/bsw@0 125 do
jbe/bsw@0 126 local app_base = os.getenv("WEBMCP_APP_BASEPATH")
jbe/bsw@0 127 if not app_base then
jbe/bsw@0 128 error(
jbe/bsw@0 129 "Failed to initialize autoloader " ..
jbe/bsw@0 130 "due to unset WEBMCP_APP_BASEPATH environment variable."
jbe/bsw@0 131 )
jbe/bsw@0 132 end
jbe/bsw@0 133 local weakkey_mt = { __mode = "k" }
jbe/bsw@0 134 local autoloader_category = setmetatable({}, weakkey_mt)
jbe/bsw@0 135 local autoloader_path = setmetatable({}, weakkey_mt)
jbe/bsw@0 136 local autoloader_mt = {}
jbe/bsw@0 137 local function install_autoloader(self, category, path)
jbe/bsw@0 138 autoloader_category[self] = category
jbe/bsw@0 139 autoloader_path[self] = path
jbe/bsw@0 140 setmetatable(self, autoloader_mt)
jbe/bsw@0 141 end
jbe/bsw@0 142 local function try_exec(filename)
jbe/bsw@0 143 local file = io.open(filename, "r")
jbe/bsw@0 144 if file then
jbe/bsw@0 145 local filedata = file:read("*a")
jbe/bsw@0 146 io.close(file)
jbe/bsw@0 147 local func, errmsg = loadstring(filedata, "=" .. filename)
jbe/bsw@0 148 if func then
jbe/bsw@0 149 func()
jbe/bsw@0 150 return true
jbe/bsw@0 151 else
jbe/bsw@0 152 error(errmsg, 0)
jbe/bsw@0 153 end
jbe/bsw@0 154 else
jbe/bsw@0 155 return false
jbe/bsw@0 156 end
jbe/bsw@0 157 end
jbe/bsw@0 158 local function compose_path_string(base, path, key)
jbe/bsw@0 159 return string.gsub(
jbe/bsw@0 160 base .. table.concat(path, "/") .. "/" .. key, "/+", "/"
jbe/bsw@0 161 )
jbe/bsw@0 162 end
jbe/bsw@0 163 function autoloader_mt.__index(self, key)
jbe/bsw@0 164 local category, base_path, merge_base_path, file_key
jbe/bsw@0 165 local merge = false
jbe/bsw@0 166 if
jbe/bsw@0 167 string.find(key, "^[a-z_][A-Za-z0-9_]*$") and
jbe/bsw@0 168 not string.find(key, "^__")
jbe/bsw@0 169 then
jbe/bsw@0 170 category = "env"
jbe@43 171 base_path = WEBMCP_PATH .. "/env/"
jbe/bsw@0 172 merge = true
jbe/bsw@0 173 merge_base_path = app_base .. "/env/"
jbe/bsw@0 174 file_key = key
jbe/bsw@0 175 elseif string.find(key, "^[A-Z][A-Za-z0-9]*$") then
jbe/bsw@0 176 category = "model"
jbe/bsw@0 177 base_path = app_base .. "/model/"
jbe/bsw@0 178 local first = true
jbe/bsw@0 179 file_key = string.gsub(key, "[A-Z]",
jbe/bsw@0 180 function(c)
jbe/bsw@0 181 if first then
jbe/bsw@0 182 first = false
jbe/bsw@0 183 return string.lower(c)
jbe/bsw@0 184 else
jbe/bsw@0 185 return "_" .. string.lower(c)
jbe/bsw@0 186 end
jbe/bsw@0 187 end
jbe/bsw@0 188 )
jbe/bsw@0 189 else
jbe/bsw@0 190 return
jbe/bsw@0 191 end
jbe/bsw@0 192 local required_category = autoloader_category[self]
jbe/bsw@0 193 if required_category and required_category ~= category then return end
jbe/bsw@0 194 local path = autoloader_path[self]
jbe/bsw@0 195 local path_string = compose_path_string(base_path, path, file_key)
jbe/bsw@0 196 local merge_path_string
jbe/bsw@0 197 if merge then
jbe/bsw@0 198 merge_path_string = compose_path_string(
jbe/bsw@0 199 merge_base_path, path, file_key
jbe/bsw@0 200 )
jbe/bsw@0 201 end
jbe/bsw@0 202 local function try_dir(dirname)
jbe/bsw@0 203 local dir = io.open(dirname)
jbe/bsw@0 204 if dir then
jbe/bsw@0 205 io.close(dir)
jbe/bsw@0 206 local obj = {}
jbe/bsw@0 207 local sub_path = {}
jbe/bsw@0 208 for i, v in ipairs(path) do sub_path[i] = v end
jbe/bsw@0 209 table.insert(sub_path, file_key)
jbe/bsw@0 210 install_autoloader(obj, category, sub_path)
jbe/bsw@0 211 rawset(self, key, obj)
jbe/bsw@0 212 try_exec(path_string .. "/__init.lua")
jbe/bsw@0 213 if merge then try_exec(merge_path_string .. "/__init.lua") end
jbe/bsw@0 214 return true
jbe/bsw@0 215 else
jbe/bsw@0 216 return false
jbe/bsw@0 217 end
jbe/bsw@0 218 end
jbe/bsw@0 219 if merge and try_exec(merge_path_string .. ".lua") then
jbe/bsw@0 220 elseif merge and try_dir(merge_path_string .. "/") then
jbe/bsw@0 221 elseif try_exec(path_string .. ".lua") then
jbe/bsw@0 222 elseif try_dir(path_string .. "/") then
jbe/bsw@0 223 else end
jbe/bsw@0 224 return rawget(self, key)
jbe/bsw@0 225 end
jbe/bsw@0 226 install_autoloader(_G, nil, {})
jbe@43 227 try_exec(WEBMCP_PATH .. "env/__init.lua")
jbe/bsw@0 228 end
jbe/bsw@0 229
jbe/bsw@0 230 -- interactive console mode
jbe/bsw@0 231 if not cgi then
jbe/bsw@0 232 local config_name = request.get_config_name()
jbe/bsw@0 233 if config_name then
jbe/bsw@0 234 execute.config(config_name)
jbe/bsw@0 235 end
jbe/bsw@0 236 return
jbe/bsw@0 237 end
jbe/bsw@0 238
jbe/bsw@0 239 local success, error_info = xpcall(
jbe/bsw@0 240 function()
jbe/bsw@0 241
jbe/bsw@0 242 -- execute configuration file
jbe/bsw@0 243 do
jbe/bsw@0 244 local config_name = request.get_config_name()
jbe/bsw@0 245 if config_name then
jbe/bsw@0 246 execute.config(config_name)
jbe/bsw@0 247 end
jbe/bsw@0 248 end
jbe/bsw@0 249
jbe/bsw@0 250 -- restore slots if coming from http redirect
jbe/bsw@0 251 if cgi.params.tempstore then
jbe/bsw@0 252 trace.restore_slots{}
jbe/bsw@0 253 local blob = tempstore.pop(cgi.params.tempstore)
jbe/bsw@0 254 if blob then slot.restore_all(blob) end
jbe/bsw@0 255 end
jbe/bsw@0 256
jbe/bsw@0 257 local function file_exists(filename)
jbe/bsw@0 258 local file = io.open(filename, "r")
jbe/bsw@0 259 if file then
jbe/bsw@0 260 io.close(file)
jbe/bsw@0 261 return true
jbe/bsw@0 262 else
jbe/bsw@0 263 return false
jbe/bsw@0 264 end
jbe/bsw@0 265 end
jbe/bsw@0 266
jbe/bsw@0 267 if cgi.params["_webmcp_404"] then
jbe/bsw@0 268 request.force_absolute_baseurl()
jbe/bsw@0 269 request.set_status("404 Not Found")
jbe/bsw@0 270 if request.get_404_route() then
jbe/bsw@0 271 request.forward(request.get_404_route())
jbe/bsw@0 272 else
jbe/bsw@0 273 error("No 404 page set.")
jbe/bsw@0 274 end
jbe/bsw@0 275 elseif request.get_action() then
jbe/bsw@0 276 trace.request{
jbe/bsw@0 277 module = request.get_module(),
jbe/bsw@0 278 action = request.get_action()
jbe/bsw@0 279 }
jbe/bsw@0 280 if
jbe/bsw@0 281 request.get_404_route() and
jbe/bsw@0 282 not file_exists(
jbe/bsw@0 283 encode.action_file_path{
jbe/bsw@0 284 module = request.get_module(),
jbe/bsw@0 285 action = request.get_action()
jbe/bsw@0 286 }
jbe/bsw@0 287 )
jbe/bsw@0 288 then
jbe/bsw@0 289 request.set_status("404 Not Found")
jbe/bsw@0 290 request.forward(request.get_404_route())
jbe/bsw@0 291 else
jbe/bsw@0 292 if cgi.method ~= "POST" then
jbe/bsw@0 293 request.set_status("405 Method Not Allowed")
jbe/bsw@0 294 cgi.add_header("Allow: POST")
jbe/bsw@0 295 error("Tried to invoke an action with a GET request.")
jbe/bsw@0 296 end
jbe/bsw@0 297 local action_status = execute.filtered_action{
jbe/bsw@0 298 module = request.get_module(),
jbe/bsw@0 299 action = request.get_action(),
jbe/bsw@0 300 }
jbe/bsw@0 301 if not request.is_rerouted() then
jbe/bsw@0 302 local routing_mode, routing_module, routing_view
jbe/bsw@0 303 routing_mode = cgi.params["_webmcp_routing." .. action_status .. ".mode"]
jbe/bsw@0 304 routing_module = cgi.params["_webmcp_routing." .. action_status .. ".module"]
jbe/bsw@0 305 routing_view = cgi.params["_webmcp_routing." .. action_status .. ".view"]
jbe/bsw@0 306 if not (routing_mode or routing_module or routing_view) then
jbe/bsw@0 307 action_status = "default"
jbe/bsw@0 308 routing_mode = cgi.params["_webmcp_routing.default.mode"]
jbe/bsw@0 309 routing_module = cgi.params["_webmcp_routing.default.module"]
jbe/bsw@0 310 routing_view = cgi.params["_webmcp_routing.default.view"]
jbe/bsw@0 311 end
jbe/bsw@0 312 assert(routing_module, "Routing information has no module.")
jbe/bsw@0 313 assert(routing_view, "Routing information has no view.")
jbe/bsw@0 314 if routing_mode == "redirect" then
jbe/bsw@0 315 local routing_params = {}
jbe/bsw@0 316 for key, value in pairs(cgi.params) do
jbe/bsw@0 317 local status, stripped_key = string.match(
jbe/bsw@0 318 key, "^_webmcp_routing%.([^%.]*)%.params%.(.*)$"
jbe/bsw@0 319 )
jbe/bsw@0 320 if status == action_status then
jbe/bsw@0 321 routing_params[stripped_key] = value
jbe/bsw@0 322 end
jbe/bsw@0 323 end
jbe/bsw@0 324 request.redirect{
jbe/bsw@0 325 module = routing_module,
jbe/bsw@0 326 view = routing_view,
jbe/bsw@0 327 id = cgi.params["_webmcp_routing." .. action_status .. ".id"],
jbe/bsw@0 328 params = routing_params
jbe/bsw@0 329 }
jbe/bsw@0 330 elseif routing_mode == "forward" then
jbe/bsw@0 331 request.forward{ module = routing_module, view = routing_view }
jbe/bsw@0 332 else
jbe/bsw@0 333 error("Missing or unknown routing mode in request parameters.")
jbe/bsw@0 334 end
jbe/bsw@0 335 end
jbe/bsw@0 336 end
jbe/bsw@0 337 else
jbe/bsw@0 338 -- no action
jbe/bsw@0 339 trace.request{
jbe/bsw@0 340 module = request.get_module(),
jbe/bsw@0 341 view = request.get_view()
jbe/bsw@0 342 }
jbe/bsw@0 343 if
jbe/bsw@0 344 request.get_404_route() and
jbe/bsw@0 345 not file_exists(
jbe/bsw@0 346 encode.view_file_path{
jbe/bsw@0 347 module = request.get_module(),
jbe/bsw@0 348 view = request.get_view()
jbe/bsw@0 349 }
jbe/bsw@0 350 )
jbe/bsw@0 351 then
jbe/bsw@0 352 request.set_status("404 Not Found")
jbe/bsw@0 353 request.forward(request.get_404_route())
jbe/bsw@0 354 end
jbe/bsw@0 355 end
jbe/bsw@0 356
jbe/bsw@0 357 if not request.get_redirect_data() then
jbe@3 358 request.process_forward()
jbe/bsw@2 359 local view = request.get_view()
jbe/bsw@2 360 if string.find(view, "^_") then
jbe/bsw@2 361 error("Tried to call a private view (prefixed with underscore).")
jbe/bsw@2 362 end
jbe/bsw@0 363 execute.filtered_view{
jbe/bsw@0 364 module = request.get_module(),
jbe/bsw@2 365 view = view,
jbe/bsw@0 366 }
jbe/bsw@0 367 end
jbe/bsw@0 368
jbe/bsw@0 369 -- force error due to missing absolute base URL until its too late to display error message
jbe/bsw@0 370 --if request.get_redirect_data() then
jbe/bsw@0 371 -- request.get_absolute_baseurl()
jbe/bsw@0 372 --end
jbe/bsw@0 373
jbe/bsw@0 374 end,
jbe/bsw@0 375
jbe/bsw@0 376 function(errobj)
jbe/bsw@0 377 return {
jbe/bsw@0 378 errobj = errobj,
jbe/bsw@0 379 stacktrace = string.gsub(
jbe/bsw@0 380 debug.traceback('', 2),
jbe/bsw@0 381 "^\r?\n?stack traceback:\r?\n?", ""
jbe/bsw@0 382 )
jbe/bsw@0 383 }
jbe/bsw@0 384 end
jbe/bsw@0 385 )
jbe/bsw@0 386
jbe/bsw@0 387 if not success then trace.error{} end
jbe/bsw@0 388
jbe/bsw@0 389 -- laufzeitermittlung
jbe@65 390 trace.exectime{ real = extos.monotonic_hires_time(), cpu = os.clock() }
jbe/bsw@0 391
jbe/bsw@0 392 slot.select('trace', trace.render) -- render trace information
jbe/bsw@0 393
jbe/bsw@0 394 local redirect_data = request.get_redirect_data()
jbe/bsw@0 395
jbe/bsw@0 396 -- log error and switch to error layout, unless success
jbe/bsw@0 397 if not success then
jbe/bsw@0 398 local errobj = error_info.errobj
jbe/bsw@0 399 local stacktrace = error_info.stacktrace
jbe/bsw@11 400 if not request.get_status() and not request.get_json_request_slots() then
jbe/bsw@0 401 request.set_status("500 Internal Server Error")
jbe/bsw@0 402 end
jbe/bsw@0 403 slot.set_layout('system_error')
jbe/bsw@0 404 slot.select('system_error', function()
jbe/bsw@0 405 if getmetatable(errobj) == mondelefant.errorobject_metatable then
jbe/bsw@0 406 slot.put(
jbe/bsw@0 407 "<p>Database error of class <b>",
jbe/bsw@0 408 encode.html(errobj.code),
jbe/bsw@0 409 "</b> occured:<br/><b>",
jbe/bsw@0 410 encode.html(errobj.message),
jbe/bsw@0 411 "</b></p>"
jbe/bsw@0 412 )
jbe/bsw@0 413 else
jbe/bsw@0 414 slot.put("<p><b>", encode.html(tostring(errobj)), "</b></p>")
jbe/bsw@0 415 end
jbe/bsw@0 416 slot.put("<p>Stack trace follows:<br/>")
jbe/bsw@0 417 slot.put(encode.html_newlines(encode.html(stacktrace)))
jbe/bsw@0 418 slot.put("</p>")
jbe/bsw@0 419 end)
jbe/bsw@0 420 elseif redirect_data then
jbe/bsw@0 421 local redirect_params = {}
jbe/bsw@0 422 for key, value in pairs(redirect_data.params) do
jbe/bsw@0 423 redirect_params[key] = value
jbe/bsw@0 424 end
jbe/bsw@0 425 local slot_dump = slot.dump_all()
jbe/bsw@0 426 if slot_dump ~= "" then
jbe/bsw@0 427 redirect_params.tempstore = tempstore.save(slot_dump)
jbe/bsw@0 428 end
jbe/bsw@11 429 local json_request_slots = request.get_json_request_slots()
jbe/bsw@11 430 if json_request_slots then
jbe/bsw@11 431 redirect_params["_webmcp_json_slots[]"] = json_request_slots
jbe/bsw@11 432 end
jbe/bsw@0 433 cgi.redirect(
jbe/bsw@0 434 encode.url{
jbe/bsw@0 435 base = request.get_absolute_baseurl(),
jbe/bsw@0 436 module = redirect_data.module,
jbe/bsw@0 437 view = redirect_data.view,
jbe/bsw@0 438 id = redirect_data.id,
jbe/bsw@0 439 params = redirect_params
jbe/bsw@0 440 }
jbe/bsw@0 441 )
jbe/bsw@0 442 cgi.send_data()
jbe/bsw@0 443 end
jbe/bsw@0 444
jbe/bsw@0 445 if not success or not redirect_data then
jbe/bsw@0 446
jbe/bsw@0 447 local http_status = request.get_status()
jbe/bsw@0 448 if http_status then
jbe/bsw@0 449 cgi.set_status(http_status)
jbe/bsw@0 450 end
jbe/bsw@0 451
jbe@1 452 local json_request_slots = request.get_json_request_slots()
jbe@1 453 if json_request_slots then
jbe@1 454 cgi.set_content_type('application/json')
jbe@1 455 local data = {}
jbe@1 456 for idx, slot_ident in ipairs(json_request_slots) do
jbe@1 457 data[slot_ident] = slot.get_content(slot_ident)
jbe/bsw@0 458 end
jbe@1 459 cgi.send_data(encode.json(data))
jbe/bsw@0 460 else
jbe/bsw@0 461 cgi.set_content_type(slot.get_content_type())
jbe/bsw@0 462 cgi.send_data(slot.render_layout())
jbe/bsw@0 463 end
jbe/bsw@0 464 end
jbe/bsw@0 465
jbe/bsw@0 466 exit()

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