rev |
line source |
jbe@215
|
1 --[[--
|
jbe@215
|
2 request.handler(
|
jbe@270
|
3 http_request, -- HTTP request object
|
jbe@264
|
4 close -- boolean indicating whether the server should announce to close the connection
|
jbe@215
|
5 )
|
jbe@215
|
6
|
jbe@255
|
7 Called by mcp.lua to process an HTTP request. Performs some initializations, calls request.router(), and handles the request.
|
jbe@215
|
8
|
jbe@215
|
9 --]]--
|
jbe@210
|
10
|
jbe@255
|
11 local function file_exists(filename)
|
jbe@255
|
12 local file = io.open(filename, "r")
|
jbe@255
|
13 if file then
|
jbe@255
|
14 io.close(file)
|
jbe@255
|
15 return true
|
jbe@255
|
16 else
|
jbe@255
|
17 return false
|
jbe@255
|
18 end
|
jbe@255
|
19 end
|
jbe@255
|
20
|
jbe@264
|
21 function request.handler(http_request, close)
|
jbe@258
|
22 _G.app = {} -- may be overwritten or modified by request initializers
|
jbe@255
|
23 do
|
jbe@255
|
24 request._in_progress = true -- NOTE: must be set to true before initializer functions are called
|
jbe@255
|
25 for i, func in ipairs(request._initializers) do
|
jbe@262
|
26 func()
|
jbe@255
|
27 end
|
jbe@255
|
28 end
|
jbe@255
|
29
|
jbe@212
|
30 request._http_request = http_request
|
jbe@215
|
31 local path = http_request.path
|
jbe@215
|
32 if path then
|
jbe@221
|
33 local relative_baseurl_elements = {}
|
jbe@215
|
34 for match in string.gmatch(path, "/") do
|
jbe@221
|
35 relative_baseurl_elements[#relative_baseurl_elements+1] = "../"
|
jbe@215
|
36 end
|
jbe@221
|
37 request._relative_baseurl = table.concat(relative_baseurl_elements)
|
jbe@215
|
38 else
|
jbe@215
|
39 request._relative_baseurl = nil
|
jbe@215
|
40 end
|
jbe@241
|
41 request._route = request.router() or {}
|
jbe@255
|
42
|
jbe@264
|
43 if close then
|
jbe@264
|
44 request.add_header("Connection", "close")
|
jbe@264
|
45 end
|
jbe@264
|
46
|
jbe@255
|
47 local success, error_info = xpcall(
|
jbe@255
|
48 function()
|
jbe@255
|
49
|
jbe@255
|
50 if request._route.static then
|
jbe@270
|
51 local f, errmsg = io.open(WEBMCP_BASE_PATH .. "static/" .. request._route.static, "r")
|
jbe@270
|
52 if not f then
|
jbe@270
|
53 if request.get_404_route() then
|
jbe@270
|
54 request.set_status("404 Not Found")
|
jbe@270
|
55 request.forward(request.get_404_route())
|
jbe@270
|
56 return
|
jbe@270
|
57 else
|
jbe@270
|
58 error('Could not open static file "' .. request._route.static .. '": ' .. errmsg)
|
jbe@270
|
59 end
|
jbe@270
|
60 end
|
jbe@270
|
61 local d = assert(f:read("*a"))
|
jbe@255
|
62 f:close()
|
jbe@255
|
63 slot.put_into("data", d)
|
jbe@270
|
64 local filename_extension = string.match(request._route.static, "%.([^.]+)$")
|
jbe@270
|
65 slot.set_layout(nil, request._mime_types[filename_extension] or "application/octet-stream")
|
jbe@255
|
66 return
|
jbe@255
|
67 end
|
jbe@255
|
68
|
jbe@255
|
69 -- restore slots if coming from http redirect
|
jbe@255
|
70 local tempstore_value = http_request.get_params["_tempstore"]
|
jbe@255
|
71 if tempstore_value then
|
jbe@255
|
72 trace.restore_slots{}
|
jbe@255
|
73 local blob = tempstore.pop(tempstore_value)
|
jbe@255
|
74 if blob then slot.restore_all(blob) end
|
jbe@255
|
75 end
|
jbe@255
|
76
|
jbe@255
|
77 if request.get_action() then
|
jbe@255
|
78 trace.request{
|
jbe@255
|
79 module = request.get_module(),
|
jbe@255
|
80 action = request.get_action()
|
jbe@255
|
81 }
|
jbe@255
|
82 if
|
jbe@255
|
83 request.get_404_route() and
|
jbe@255
|
84 not file_exists(
|
jbe@255
|
85 encode.action_file_path{
|
jbe@255
|
86 module = request.get_module(),
|
jbe@255
|
87 action = request.get_action()
|
jbe@255
|
88 }
|
jbe@255
|
89 )
|
jbe@255
|
90 then
|
jbe@255
|
91 request.set_status("404 Not Found")
|
jbe@255
|
92 request.forward(request.get_404_route())
|
jbe@255
|
93 else
|
jbe@255
|
94 if http_request.method ~= "POST" then
|
jbe@255
|
95 request.set_status("405 Method Not Allowed")
|
jbe@255
|
96 request.add_header("Allow", "POST")
|
jbe@255
|
97 error("Tried to invoke an action with a GET request.")
|
jbe@255
|
98 end
|
jbe@255
|
99 local action_status = execute.filtered_action{
|
jbe@255
|
100 module = request.get_module(),
|
jbe@255
|
101 action = request.get_action(),
|
jbe@255
|
102 }
|
jbe@255
|
103 if not request.is_rerouted() then
|
jbe@255
|
104 local routing_mode, routing_module, routing_view, routing_anchor
|
jbe@255
|
105 routing_mode = http_request.post_params["_webmcp_routing." .. action_status .. ".mode"]
|
jbe@255
|
106 routing_module = http_request.post_params["_webmcp_routing." .. action_status .. ".module"]
|
jbe@255
|
107 routing_view = http_request.post_params["_webmcp_routing." .. action_status .. ".view"]
|
jbe@255
|
108 routing_anchor = http_request.post_params["_webmcp_routing." .. action_status .. ".anchor"]
|
jbe@255
|
109 if not (routing_mode or routing_module or routing_view) then
|
jbe@255
|
110 action_status = "default"
|
jbe@255
|
111 routing_mode = http_request.post_params["_webmcp_routing.default.mode"]
|
jbe@255
|
112 routing_module = http_request.post_params["_webmcp_routing.default.module"]
|
jbe@255
|
113 routing_view = http_request.post_params["_webmcp_routing.default.view"]
|
jbe@255
|
114 routing_anchor = http_request.post_params["_webmcp_routing.default.anchor"]
|
jbe@255
|
115 end
|
jbe@255
|
116 assert(routing_module, "Routing information has no module.")
|
jbe@255
|
117 assert(routing_view, "Routing information has no view.")
|
jbe@255
|
118 if routing_mode == "redirect" then
|
jbe@255
|
119 local routing_params = {}
|
jbe@255
|
120 for key, value in pairs(request.get_param_strings{ method="POST", include_internal=true }) do
|
jbe@255
|
121 local status, stripped_key = string.match(
|
jbe@255
|
122 key, "^_webmcp_routing%.([^%.]*)%.params%.(.*)$"
|
jbe@255
|
123 )
|
jbe@255
|
124 if status == action_status then
|
jbe@255
|
125 routing_params[stripped_key] = value
|
jbe@255
|
126 end
|
jbe@255
|
127 end
|
jbe@255
|
128 request.redirect{
|
jbe@255
|
129 module = routing_module,
|
jbe@255
|
130 view = routing_view,
|
jbe@255
|
131 id = http_request.post_params["_webmcp_routing." .. action_status .. ".id"],
|
jbe@255
|
132 params = routing_params,
|
jbe@255
|
133 anchor = routing_anchor
|
jbe@255
|
134 }
|
jbe@255
|
135 elseif routing_mode == "forward" then
|
jbe@255
|
136 request.forward{ module = routing_module, view = routing_view }
|
jbe@255
|
137 else
|
jbe@255
|
138 error("Missing or unknown routing mode in request parameters.")
|
jbe@255
|
139 end
|
jbe@255
|
140 end
|
jbe@255
|
141 end
|
jbe@255
|
142 else
|
jbe@255
|
143 -- no action
|
jbe@255
|
144 trace.request{
|
jbe@255
|
145 module = request.get_module(),
|
jbe@255
|
146 view = request.get_view()
|
jbe@255
|
147 }
|
jbe@255
|
148 if
|
jbe@255
|
149 request.get_404_route() and
|
jbe@255
|
150 not file_exists(
|
jbe@255
|
151 encode.view_file_path{
|
jbe@255
|
152 module = request.get_module(),
|
jbe@255
|
153 view = request.get_view()
|
jbe@255
|
154 }
|
jbe@255
|
155 )
|
jbe@255
|
156 then
|
jbe@255
|
157 request.set_status("404 Not Found")
|
jbe@255
|
158 request.forward(request.get_404_route())
|
jbe@255
|
159 end
|
jbe@255
|
160 end
|
jbe@255
|
161
|
jbe@255
|
162 if not request.get_redirect_data() then
|
jbe@255
|
163 request.process_forward()
|
jbe@255
|
164 local view = request.get_view()
|
jbe@255
|
165 if string.find(view, "^_") then
|
jbe@255
|
166 error("Tried to call a private view (prefixed with underscore).")
|
jbe@255
|
167 end
|
jbe@255
|
168 execute.filtered_view{
|
jbe@255
|
169 module = request.get_module(),
|
jbe@255
|
170 view = view,
|
jbe@255
|
171 }
|
jbe@255
|
172 end
|
jbe@255
|
173
|
jbe@255
|
174 -- force error due to missing absolute base URL until its too late to display error message
|
jbe@255
|
175 --if request.get_redirect_data() then
|
jbe@255
|
176 -- request.get_absolute_baseurl()
|
jbe@255
|
177 --end
|
jbe@255
|
178
|
jbe@255
|
179 end,
|
jbe@255
|
180
|
jbe@255
|
181 function(errobj)
|
jbe@255
|
182 return {
|
jbe@255
|
183 errobj = errobj,
|
jbe@255
|
184 stacktrace = string.gsub(
|
jbe@255
|
185 debug.traceback('', 2),
|
jbe@255
|
186 "^\r?\n?stack traceback:\r?\n?", ""
|
jbe@255
|
187 )
|
jbe@255
|
188 }
|
jbe@255
|
189 end
|
jbe@255
|
190 )
|
jbe@255
|
191
|
jbe@255
|
192 if not success then trace.error{} end
|
jbe@255
|
193
|
jbe@255
|
194 -- TODO: extend trace system to generally monitor execution time
|
jbe@255
|
195 -- trace.exectime{ real = extos.monotonic_hires_time(), cpu = os.clock() }
|
jbe@255
|
196
|
jbe@255
|
197 slot.select('trace', trace.render) -- render trace information
|
jbe@255
|
198
|
jbe@255
|
199 local redirect_data = request.get_redirect_data()
|
jbe@255
|
200
|
jbe@255
|
201 -- log error and switch to error layout, unless success
|
jbe@255
|
202 if not success then
|
jbe@255
|
203 local errobj = error_info.errobj
|
jbe@255
|
204 local stacktrace = error_info.stacktrace
|
jbe@255
|
205 if not request._status then
|
jbe@255
|
206 request._status = "500 Internal Server Error"
|
jbe@255
|
207 end
|
jbe@255
|
208 slot.set_layout('system_error')
|
jbe@255
|
209 slot.select('system_error', function()
|
jbe@255
|
210 if getmetatable(errobj) == mondelefant.errorobject_metatable then
|
jbe@255
|
211 slot.put(
|
jbe@255
|
212 "<p>Database error of class <b>",
|
jbe@255
|
213 encode.html(errobj.code),
|
jbe@255
|
214 "</b> occured:<br/><b>",
|
jbe@255
|
215 encode.html(errobj.message),
|
jbe@255
|
216 "</b></p>"
|
jbe@255
|
217 )
|
jbe@255
|
218 else
|
jbe@255
|
219 slot.put("<p><b>", encode.html(tostring(errobj)), "</b></p>")
|
jbe@255
|
220 end
|
jbe@255
|
221 slot.put("<p>Stack trace follows:<br/>")
|
jbe@255
|
222 slot.put(encode.html_newlines(encode.html(stacktrace)))
|
jbe@255
|
223 slot.put("</p>")
|
jbe@255
|
224 end)
|
jbe@255
|
225 elseif redirect_data then
|
jbe@267
|
226 redirect_data = table.new(redirect_data)
|
jbe@267
|
227 if redirect_data.base == nil then
|
jbe@267
|
228 redirect_data.base = request.get_absolute_baseurl()
|
jbe@255
|
229 end
|
jbe@267
|
230 redirect_data.params = table.new(redirect_data.params)
|
jbe@255
|
231 local slot_dump = slot.dump_all()
|
jbe@255
|
232 if slot_dump ~= "" then
|
jbe@267
|
233 redirect_data.params.tempstore = tempstore.save(slot_dump)
|
jbe@255
|
234 end
|
jbe@255
|
235 http_request:send_status("303 See Other")
|
jbe@264
|
236 for i, header in ipairs(request._response_headers) do
|
jbe@264
|
237 http_request:send_header(header[1], header[2])
|
jbe@264
|
238 end
|
jbe@267
|
239 http_request:send_header("Location", encode.url(redirect_data))
|
jbe@255
|
240 http_request:finish()
|
jbe@255
|
241 end
|
jbe@255
|
242
|
jbe@255
|
243 if not success or not redirect_data then
|
jbe@255
|
244
|
jbe@255
|
245 http_request:send_status(request._status or "200 OK")
|
jbe@255
|
246 for i, header in ipairs(request._response_headers) do
|
jbe@255
|
247 http_request:send_header(header[1], header[2])
|
jbe@255
|
248 end
|
jbe@255
|
249 http_request:send_header("Content-Type", slot.get_content_type())
|
jbe@255
|
250 http_request:send_data(slot.render_layout())
|
jbe@255
|
251 http_request:finish()
|
jbe@255
|
252 end
|
jbe@255
|
253
|
jbe@215
|
254 end
|
jbe@258
|
255
|
jbe@258
|
256 --//--
|
jbe@258
|
257
|
jbe@258
|
258 --[[--
|
jbe@258
|
259 app -- table to store an application state
|
jbe@258
|
260
|
jbe@258
|
261 'app' is a global table for storing any application state data. It will be reset for every request.
|
jbe@258
|
262 --]]--
|
jbe@258
|
263
|
jbe@258
|
264 -- Initialized in request.handler(...).
|
jbe@258
|
265
|
jbe@258
|
266 --//--
|