moonbridge

annotate moonbridge_http.lua @ 179:77d8fdd124e6

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Throw error if key is not a string when accessing headers table
author jbe
date Thu Jun 18 22:38:53 2015 +0200 (2015-06-18)
parents f6eea95879d4
children 31820816f554
rev   line source
jbe@0 1 #!/usr/bin/env lua
jbe@0 2
jbe@0 3 -- module preamble
jbe@0 4 local _G, _M = _ENV, {}
jbe@0 5 _ENV = setmetatable({}, {
jbe@0 6 __index = function(self, key)
jbe@0 7 local value = _M[key]; if value ~= nil then return value end
jbe@0 8 return _G[key]
jbe@0 9 end,
jbe@63 10 __newindex = _M
jbe@0 11 })
jbe@0 12
jbe@0 13 -- function that encodes certain HTML entities:
jbe@0 14 -- (not used by the library itself)
jbe@0 15 function encode_html(text)
jbe@0 16 return (
jbe@0 17 string.gsub(
jbe@0 18 text, '[<>&"]',
jbe@0 19 function(char)
jbe@0 20 if char == '<' then
jbe@0 21 return "&lt;"
jbe@0 22 elseif char == '>' then
jbe@0 23 return "&gt;"
jbe@0 24 elseif char == '&' then
jbe@0 25 return "&amp;"
jbe@0 26 elseif char == '"' then
jbe@0 27 return "&quot;"
jbe@0 28 end
jbe@0 29 end
jbe@0 30 )
jbe@0 31 )
jbe@0 32
jbe@0 33 end
jbe@0 34
jbe@0 35 -- function that encodes special characters for URIs:
jbe@0 36 -- (not used by the library itself)
jbe@0 37 function encode_uri(text)
jbe@0 38 return (
jbe@0 39 string.gsub(text, "[^0-9A-Za-z_%.~-]",
jbe@0 40 function (char)
jbe@0 41 return string.format("%%%02x", string.byte(char))
jbe@0 42 end
jbe@0 43 )
jbe@0 44 )
jbe@0 45 end
jbe@0 46
jbe@0 47 -- function undoing URL encoding:
jbe@0 48 do
jbe@0 49 local b0 = string.byte("0")
jbe@0 50 local b9 = string.byte("9")
jbe@0 51 local bA = string.byte("A")
jbe@0 52 local bF = string.byte("F")
jbe@0 53 local ba = string.byte("a")
jbe@0 54 local bf = string.byte("f")
jbe@0 55 function decode_uri(str)
jbe@0 56 return (
jbe@0 57 string.gsub(
jbe@0 58 string.gsub(str, "%+", " "),
jbe@0 59 "%%([0-9A-Fa-f][0-9A-Fa-f])",
jbe@0 60 function(hex)
jbe@0 61 local n1, n2 = string.byte(hex, 1, 2)
jbe@0 62 if n1 >= b0 and n1 <= b9 then n1 = n1 - b0
jbe@0 63 elseif n1 >= bA and n1 <= bF then n1 = n1 - bA + 10
jbe@0 64 elseif n1 >= ba and n1 <= bf then n1 = n1 - ba + 10
jbe@0 65 else error("Assertion failed") end
jbe@0 66 if n2 >= b0 and n2 <= b9 then n2 = n2 - b0
jbe@0 67 elseif n2 >= bA and n2 <= bF then n2 = n2 - bA + 10
jbe@0 68 elseif n2 >= ba and n2 <= bf then n2 = n2 - ba + 10
jbe@0 69 else error("Assertion failed") end
jbe@0 70 return string.char(n1 * 16 + n2)
jbe@0 71 end
jbe@0 72 )
jbe@0 73 )
jbe@0 74 end
jbe@0 75 end
jbe@0 76
jbe@0 77 -- status codes that carry no response body (in addition to 1xx):
jbe@0 78 -- (set to "zero_content_length" if Content-Length header is required)
jbe@0 79 status_without_response_body = {
jbe@5 80 ["101"] = true, -- list 101 to allow protocol switch
jbe@0 81 ["204"] = true,
jbe@0 82 ["205"] = "zero_content_length",
jbe@0 83 ["304"] = true
jbe@0 84 }
jbe@0 85
jbe@167 86 -- handling of GET/POST param tables:
jbe@167 87 local new_params_list -- defined later
jbe@167 88 do
jbe@167 89 local params_list_mapping = setmetatable({}, {__mode="k"})
jbe@167 90 local function nextnonempty(tbl, key)
jbe@167 91 while true do
jbe@167 92 key = next(tbl, key)
jbe@167 93 if key == nil then
jbe@167 94 return nil
jbe@167 95 end
jbe@167 96 local value = tbl[key]
jbe@167 97 if #value > 0 then
jbe@167 98 return key, value
jbe@167 99 end
jbe@35 100 end
jbe@35 101 end
jbe@167 102 local function nextvalue(tbl, key)
jbe@174 103 while true do
jbe@174 104 key = next(tbl, key)
jbe@174 105 if key == nil then
jbe@174 106 return nil
jbe@174 107 end
jbe@174 108 local value = tbl[key][1]
jbe@174 109 if value ~= nil then
jbe@174 110 return key, value
jbe@174 111 end
jbe@167 112 end
jbe@167 113 end
jbe@167 114 local params_list_metatable = {
jbe@167 115 __index = function(self, key)
jbe@167 116 local tbl = {}
jbe@167 117 self[key] = tbl
jbe@167 118 return tbl
jbe@167 119 end,
jbe@167 120 __pairs = function(self)
jbe@167 121 return nextnonempty, self, nil
jbe@167 122 end
jbe@167 123 }
jbe@167 124 local params_metatable = {
jbe@167 125 __index = function(self, key)
jbe@167 126 return params_list_mapping[self][key][1]
jbe@167 127 end,
jbe@167 128 __newindex = function(self, key, value)
jbe@167 129 params_list_mapping[self][key] = {value}
jbe@167 130 end,
jbe@167 131 __pairs = function(self)
jbe@167 132 return nextvalue, params_list_mapping[self], nil
jbe@167 133 end
jbe@167 134 }
jbe@175 135 -- function that returns a table to store key value-list pairs,
jbe@167 136 -- and a second table automatically mapping keys to the first value
jbe@167 137 -- using the key value-list pairs in the first table:
jbe@167 138 new_params_list = function()
jbe@167 139 local params_list = setmetatable({}, params_list_metatable)
jbe@167 140 local params = setmetatable({}, params_metatable)
jbe@167 141 params_list_mapping[params] = params_list
jbe@167 142 return params_list, params
jbe@167 143 end
jbe@167 144 end
jbe@167 145
jbe@175 146 -- function parsing URL encoded form data and storing it in
jbe@167 147 -- a key value-list pairs structure that has to be
jbe@167 148 -- previously obtained by calling by new_params_list():
jbe@167 149 local function read_urlencoded_form(tbl, data)
jbe@167 150 for rawkey, rawvalue in string.gmatch(data, "([^?=&]*)=([^?=&]*)") do
jbe@167 151 local subtbl = tbl[decode_uri(rawkey)]
jbe@167 152 subtbl[#subtbl+1] = decode_uri(rawvalue)
jbe@167 153 end
jbe@0 154 end
jbe@0 155
jbe@175 156 -- function to convert a HTTP request handler to a socket handler:
jbe@0 157 function generate_handler(handler, options)
jbe@0 158 -- swap arguments if necessary (for convenience):
jbe@0 159 if type(handler) ~= "function" and type(options) == "function" then
jbe@0 160 handler, options = options, handler
jbe@0 161 end
jbe@160 162 -- helper function to process options:
jbe@160 163 local function default(name, default_value)
jbe@160 164 local value = options[name]
jbe@160 165 if value == nil then
jbe@160 166 return default_value
jbe@160 167 else
jbe@160 168 return value or nil
jbe@159 169 end
jbe@160 170 end
jbe@0 171 -- process options:
jbe@0 172 options = options or {}
jbe@0 173 local preamble = "" -- preamble sent with every(!) HTTP response
jbe@0 174 do
jbe@0 175 -- named arg "static_headers" is used to create the preamble:
jbe@0 176 local s = options.static_headers
jbe@0 177 local t = {}
jbe@0 178 if s then
jbe@0 179 if type(s) == "string" then
jbe@0 180 for line in string.gmatch(s, "[^\r\n]+") do
jbe@0 181 t[#t+1] = line
jbe@0 182 end
jbe@0 183 else
jbe@175 184 for i, kv in ipairs(s) do
jbe@0 185 if type(kv) == "string" then
jbe@0 186 t[#t+1] = kv
jbe@0 187 else
jbe@0 188 t[#t+1] = kv[1] .. ": " .. kv[2]
jbe@0 189 end
jbe@0 190 end
jbe@0 191 end
jbe@0 192 end
jbe@0 193 t[#t+1] = ""
jbe@0 194 preamble = table.concat(t, "\r\n")
jbe@0 195 end
jbe@160 196 local input_chunk_size = options.maximum_input_chunk_size or options.chunk_size or 16384
jbe@44 197 local output_chunk_size = options.minimum_output_chunk_size or options.chunk_size or 1024
jbe@160 198 local header_size_limit = options.header_size_limit or 1024*1024
jbe@160 199 local body_size_limit = options.body_size_limit or 64*1024*1024
jbe@175 200 local request_idle_timeout = default("request_idle_timeout", 65)
jbe@173 201 local request_header_timeout = default("request_header_timeout", 30)
jbe@175 202 local request_body_timeout = default("request_body_timeout", 300)
jbe@173 203 local response_timeout = default("response_timeout", 1800)
jbe@160 204 local poll = options.poll_function or moonbridge_io.poll
jbe@160 205 -- return socket handler:
jbe@0 206 return function(socket)
jbe@160 207 local socket_set = {[socket] = true} -- used for poll function
jbe@0 208 local survive = true -- set to false if process shall be terminated later
jbe@176 209 local consume -- can be set to function that reads some input if possible
jbe@176 210 -- function that may be used as "consume" function
jbe@176 211 -- and which drains some input if possible:
jbe@160 212 local function drain()
jbe@163 213 local bytes, status = socket:drain_nb(input_chunk_size)
jbe@163 214 if not bytes or status == "eof" then
jbe@160 215 consume = nil
jbe@50 216 end
jbe@159 217 end
jbe@163 218 -- function trying to unblock socket by reading:
jbe@160 219 local function unblock()
jbe@160 220 if consume then
jbe@160 221 poll(socket_set, socket_set)
jbe@160 222 consume()
jbe@160 223 else
jbe@160 224 poll(nil, socket_set)
jbe@0 225 end
jbe@154 226 end
jbe@163 227 -- function that enforces consumption of all input:
jbe@162 228 local function consume_all()
jbe@162 229 while consume do
jbe@163 230 poll(socket_set, nil)
jbe@162 231 consume()
jbe@162 232 end
jbe@162 233 end
jbe@163 234 -- handle requests in a loop:
jbe@160 235 repeat
jbe@166 236 -- table for caching nil values:
jbe@166 237 local headers_value_nil = {}
jbe@177 238 -- create a new request object (methods are added later):
jbe@166 239 local request -- allow references to local variable
jbe@166 240 request = {
jbe@165 241 -- allow access to underlying socket:
jbe@0 242 socket = socket,
jbe@165 243 -- cookies are simply stored in a table:
jbe@165 244 cookies = {},
jbe@165 245 -- table mapping header field names to value-lists
jbe@165 246 -- (raw access, but case-insensitive):
jbe@165 247 headers = setmetatable({}, {
jbe@165 248 __index = function(self, key)
jbe@179 249 if type(key) ~= "string" then
jbe@179 250 error("Attempted to index headers table with a non-string key")
jbe@165 251 end
jbe@179 252 local lowerkey = string.lower(key)
jbe@179 253 local result = rawget(self, lowerkey)
jbe@179 254 if result == nil then
jbe@179 255 result = {}
jbe@179 256 rawset(self, lowerkey, result)
jbe@179 257 end
jbe@179 258 rawset(self, key, result)
jbe@179 259 return result
jbe@165 260 end
jbe@165 261 }),
jbe@165 262 -- table mapping header field names to value-lists
jbe@165 263 -- (for headers with comma separated values):
jbe@165 264 headers_csv_table = setmetatable({}, {
jbe@165 265 __index = function(self, key)
jbe@165 266 local result = {}
jbe@165 267 for i, line in ipairs(request.headers[key]) do
jbe@165 268 for entry in string.gmatch(line, "[^,]+") do
jbe@165 269 local value = string.match(entry, "^[ \t]*(..-)[ \t]*$")
jbe@165 270 if value then
jbe@165 271 result[#result+1] = value
jbe@165 272 end
jbe@165 273 end
jbe@165 274 end
jbe@165 275 self[key] = result
jbe@165 276 return result
jbe@165 277 end
jbe@165 278 }),
jbe@165 279 -- table mapping header field names to a comma separated string
jbe@165 280 -- (for headers with comma separated values):
jbe@165 281 headers_csv_string = setmetatable({}, {
jbe@165 282 __index = function(self, key)
jbe@165 283 local result = {}
jbe@165 284 for i, line in ipairs(request.headers[key]) do
jbe@165 285 result[#result+1] = line
jbe@165 286 end
jbe@172 287 result = table.concat(result, ", ")
jbe@165 288 self[key] = result
jbe@165 289 return result
jbe@165 290 end
jbe@165 291 }),
jbe@165 292 -- table mapping header field names to a single string value
jbe@165 293 -- (or false if header has been sent multiple times):
jbe@165 294 headers_value = setmetatable({}, {
jbe@165 295 __index = function(self, key)
jbe@165 296 if headers_value_nil[key] then
jbe@165 297 return nil
jbe@165 298 end
jbe@165 299 local result = nil
jbe@165 300 local values = request.headers_csv_table[key]
jbe@165 301 if #values == 0 then
jbe@165 302 headers_value_nil[key] = true
jbe@165 303 elseif #values == 1 then
jbe@165 304 result = values[1]
jbe@165 305 else
jbe@165 306 result = false
jbe@165 307 end
jbe@165 308 self[key] = result
jbe@165 309 return result
jbe@165 310 end
jbe@165 311 }),
jbe@165 312 -- table mapping header field names to a flag table,
jbe@165 313 -- indicating if the comma separated value contains certain entries:
jbe@165 314 headers_flags = setmetatable({}, {
jbe@165 315 __index = function(self, key)
jbe@165 316 local result = setmetatable({}, {
jbe@165 317 __index = function(self, key)
jbe@165 318 local lowerkey = string.lower(key)
jbe@165 319 local result = rawget(self, lowerkey) or false
jbe@165 320 self[lowerkey] = result
jbe@165 321 self[key] = result
jbe@165 322 return result
jbe@165 323 end
jbe@165 324 })
jbe@165 325 for i, value in ipairs(request.headers_csv_table[key]) do
jbe@165 326 result[string.lower(value)] = true
jbe@165 327 end
jbe@165 328 self[key] = result
jbe@165 329 return result
jbe@165 330 end
jbe@165 331 })
jbe@0 332 }
jbe@172 333 -- create metatable for request object:
jbe@172 334 local request_mt = {}
jbe@172 335 setmetatable(request, request_mt)
jbe@172 336 -- callback for request body streaming:
jbe@172 337 local process_body_chunk
jbe@162 338 -- local variables to track the state:
jbe@162 339 local state = "init" -- one of:
jbe@162 340 -- "init" (initial state)
jbe@162 341 -- "no_status_sent" (configuration complete)
jbe@162 342 -- "info_status_sent" (1xx status code has been sent)
jbe@162 343 -- "bodyless_status_sent" (204/304 status code has been sent)
jbe@162 344 -- "status_sent" (regular status code has been sent)
jbe@162 345 -- "headers_sent" (headers have been terminated)
jbe@162 346 -- "finished" (request has been answered completely)
jbe@163 347 -- "faulty" (I/O or protocaol error)
jbe@162 348 local close_requested = false -- "Connection: close" requested
jbe@162 349 local close_responded = false -- "Connection: close" sent
jbe@162 350 local content_length = nil -- value of Content-Length header sent
jbe@164 351 local chunk_parts = {} -- list of chunks to send
jbe@164 352 local chunk_bytes = 0 -- sum of lengths of chunks to send
jbe@172 353 local streamed_post_params = {} -- mapping from POST field name to stream function
jbe@172 354 local streamed_post_param_patterns = {} -- list of POST field pattern and stream function pairs
jbe@163 355 -- functions to assert proper output/closing:
jbe@163 356 local function assert_output(...)
jbe@163 357 local retval, errmsg = ...
jbe@163 358 if retval then return ... end
jbe@163 359 state = "faulty"
jbe@163 360 socket:reset()
jbe@163 361 error("Could not send data to client: " .. errmsg)
jbe@163 362 end
jbe@163 363 local function assert_close(...)
jbe@163 364 local retval, errmsg = ...
jbe@163 365 if retval then return ... end
jbe@163 366 state = "faulty"
jbe@163 367 error("Could not finish sending data to client: " .. errmsg)
jbe@163 368 end
jbe@164 369 -- function to assert non-faulty handle:
jbe@164 370 local function assert_not_faulty()
jbe@164 371 assert(state ~= "faulty", "Tried to use faulty request handle")
jbe@164 372 end
jbe@162 373 -- functions to send data to the browser:
jbe@160 374 local function send(...)
jbe@163 375 assert_output(socket:write_call(unblock, ...))
jbe@38 376 end
jbe@162 377 local function send_flush(...)
jbe@163 378 assert_output(socket:flush_call(unblock, ...))
jbe@162 379 end
jbe@163 380 -- function to finish request:
jbe@163 381 local function finish()
jbe@163 382 if close_responded then
jbe@163 383 -- discard any input:
jbe@163 384 consume = drain
jbe@163 385 -- close output stream:
jbe@163 386 send_flush()
jbe@163 387 assert_close(socket:finish())
jbe@163 388 -- wait for EOF of peer to avoid immediate TCP RST condition:
jbe@163 389 consume_all()
jbe@163 390 -- fully close socket:
jbe@163 391 assert_close(socket:close())
jbe@163 392 else
jbe@163 393 send_flush()
jbe@172 394 process_body_chunk = nil
jbe@163 395 consume_all()
jbe@163 396 end
jbe@163 397 end
jbe@164 398 -- function that writes out buffered chunks (without flushing the socket):
jbe@164 399 function send_chunk()
jbe@164 400 if chunk_bytes > 0 then
jbe@164 401 assert_output(socket:write(string.format("%x\r\n", chunk_bytes)))
jbe@164 402 for i = 1, #chunk_parts do -- TODO: evaluated only once?
jbe@164 403 send(chunk_parts[i])
jbe@164 404 chunk_parts[i] = nil
jbe@164 405 end
jbe@164 406 chunk_bytes = 0
jbe@164 407 send("\r\n")
jbe@164 408 end
jbe@164 409 end
jbe@168 410 -- function to report an error:
jbe@168 411 local function request_error(throw_error, status, text)
jbe@168 412 local errmsg = "Error while reading request from client. Error response: " .. status
jbe@168 413 if text then
jbe@168 414 errmsg = errmsg .. " (" .. text .. ")"
jbe@168 415 end
jbe@168 416 if
jbe@168 417 state == "init" or
jbe@168 418 state == "no_status_sent" or
jbe@168 419 state == "info_status_sent"
jbe@168 420 then
jbe@168 421 local error_response_status, errmsg2 = pcall(function()
jbe@168 422 request:monologue()
jbe@168 423 request:send_status(status)
jbe@168 424 request:send_header("Content-Type", "text/plain")
jbe@168 425 request:send_data(status, "\n")
jbe@168 426 if text then
jbe@168 427 request:send_data("\n", text, "\n")
jbe@168 428 end
jbe@168 429 request:finish()
jbe@168 430 end)
jbe@168 431 if not error_response_status then
jbe@168 432 error("Unexpected error while sending error response: " .. errmsg2)
jbe@168 433 end
jbe@168 434 elseif state ~= "faulty" then
jbe@169 435 state = "faulty"
jbe@168 436 assert_close(socket:reset())
jbe@168 437 end
jbe@168 438 if throw_error then
jbe@168 439 error(errmsg)
jbe@168 440 else
jbe@168 441 return survive
jbe@168 442 end
jbe@168 443 end
jbe@173 444 -- read functions
jbe@170 445 local function read(...)
jbe@170 446 local data, status = socket:read_yield(...)
jbe@170 447 if data == nil then
jbe@170 448 request_error(true, "400 Bad Request", "Read error")
jbe@170 449 end
jbe@170 450 if status == "eof" then
jbe@170 451 request_error(true, "400 Bad Request", "Unexpected EOF")
jbe@170 452 end
jbe@170 453 return data
jbe@170 454 end
jbe@173 455 local function read_eof(...)
jbe@173 456 local data, status = socket:read_yield(...)
jbe@173 457 if data == nil then
jbe@173 458 request_error(true, "400 Bad Request", "Read error")
jbe@173 459 end
jbe@173 460 if status == "eof" then
jbe@173 461 if data == "" then
jbe@173 462 return nil
jbe@173 463 else
jbe@173 464 request_error(true, "400 Bad Request", "Unexpected EOF")
jbe@173 465 end
jbe@173 466 end
jbe@173 467 return data
jbe@173 468 end
jbe@168 469 -- reads a number of bytes from the socket,
jbe@168 470 -- optionally feeding these bytes chunk-wise
jbe@168 471 -- into a callback function:
jbe@168 472 local function read_body_bytes(remaining)
jbe@168 473 while remaining > 0 do
jbe@168 474 local limit
jbe@168 475 if remaining > input_chunk_size then
jbe@168 476 limit = input_chunk_size
jbe@168 477 else
jbe@168 478 limit = remaining
jbe@168 479 end
jbe@170 480 local chunk = read(limit)
jbe@168 481 remaining = remaining - limit
jbe@168 482 if process_body_chunk then
jbe@168 483 process_body_chunk(chunk)
jbe@168 484 end
jbe@168 485 end
jbe@168 486 end
jbe@168 487 -- coroutine for request body processing:
jbe@168 488 local function read_body()
jbe@168 489 if request.headers_flags["Transfer-Encoding"]["chunked"] then
jbe@176 490 local limit = body_size_limit
jbe@168 491 while true do
jbe@176 492 local line = read(32 + limit, "\n")
jbe@168 493 local zeros, lenstr = string.match(line, "^(0*)([1-9A-Fa-f]+[0-9A-Fa-f]*)\r?\n$")
jbe@168 494 local chunkext
jbe@168 495 if lenstr then
jbe@168 496 chunkext = ""
jbe@168 497 else
jbe@168 498 zeros, lenstr, chunkext = string.match(line, "^(0*)([1-9A-Fa-f]+[0-9A-Fa-f]*)([ \t;].-)\r?\n$")
jbe@168 499 end
jbe@168 500 if not lenstr or #lenstr > 13 then
jbe@168 501 request_error(true, "400 Bad Request", "Encoding error while reading chunk of request body")
jbe@168 502 end
jbe@168 503 local len = tonumber("0x" .. lenstr)
jbe@176 504 limit = limit - (#zeros + #chunkext + len)
jbe@176 505 if limit < 0 then
jbe@168 506 request_error(true, "413 Request Entity Too Large", "Request body size limit exceeded")
jbe@168 507 end
jbe@168 508 if len == 0 then break end
jbe@168 509 read_body_bytes(len)
jbe@170 510 local term = read(2, "\n")
jbe@168 511 if term ~= "\r\n" and term ~= "\n" then
jbe@168 512 request_error(true, "400 Bad Request", "Encoding error while reading chunk of request body")
jbe@168 513 end
jbe@168 514 end
jbe@168 515 while true do
jbe@176 516 local line = read(2 + limit, "\n")
jbe@168 517 if line == "\r\n" or line == "\n" then break end
jbe@176 518 limit = limit - #line
jbe@176 519 if limit < 0 then
jbe@168 520 request_error(true, "413 Request Entity Too Large", "Request body size limit exceeded while reading trailer section of chunked request body")
jbe@168 521 end
jbe@168 522 end
jbe@168 523 elseif request_body_content_length then
jbe@168 524 read_body_bytes(request_body_content_length)
jbe@168 525 end
jbe@168 526 end
jbe@172 527 -- function to setup default request body handling:
jbe@172 528 local function default_request_body_handling()
jbe@172 529 local post_params_list, post_params = new_params_list()
jbe@172 530 local content_type = request.headers_value["Content-Type"]
jbe@172 531 if content_type then
jbe@172 532 if
jbe@172 533 content_type == "application/x-www-form-urlencoded" or
jbe@172 534 string.match(content_type, "^application/x%-www%-form%-urlencoded *;")
jbe@172 535 then
jbe@172 536 read_urlencoded_form(post_params_list, request.body)
jbe@172 537 request.post_params_list, request.post_params = post_params_list, post_params
jbe@172 538 else
jbe@172 539 local boundary = string.match(
jbe@172 540 content_type,
jbe@172 541 '^multipart/form%-data[ \t]*[;,][ \t]*boundary="([^"]+)"$'
jbe@172 542 ) or string.match(
jbe@172 543 content_type,
jbe@172 544 '^multipart/form%-data[ \t]*[;,][ \t]*boundary=([^"; \t]+)$'
jbe@172 545 )
jbe@172 546 if boundary then
jbe@172 547 local post_metadata_list, post_metadata = new_params_list()
jbe@172 548 boundary = "--" .. boundary
jbe@172 549 local headerdata = ""
jbe@172 550 local streamer
jbe@172 551 local field_name
jbe@172 552 local metadata = {}
jbe@172 553 local value_parts
jbe@172 554 local function default_streamer(chunk)
jbe@172 555 value_parts[#value_parts+1] = chunk
jbe@172 556 end
jbe@172 557 local function stream_part_finish()
jbe@172 558 if streamer == default_streamer then
jbe@172 559 local value = table.concat(value_parts)
jbe@172 560 value_parts = nil
jbe@172 561 if field_name then
jbe@172 562 local values = post_params_list[field_name]
jbe@172 563 values[#values+1] = value
jbe@172 564 local metadata_entries = post_metadata_list[field_name]
jbe@172 565 metadata_entries[#metadata_entries+1] = metadata
jbe@172 566 end
jbe@172 567 else
jbe@172 568 streamer()
jbe@172 569 end
jbe@172 570 headerdata = ""
jbe@172 571 streamer = nil
jbe@172 572 field_name = nil
jbe@172 573 metadata = {}
jbe@172 574 end
jbe@172 575 local function stream_part_chunk(chunk)
jbe@172 576 if streamer then
jbe@172 577 streamer(chunk)
jbe@172 578 else
jbe@172 579 headerdata = headerdata .. chunk
jbe@172 580 while true do
jbe@172 581 local line, remaining = string.match(headerdata, "^(.-)\r?\n(.*)$")
jbe@172 582 if not line then
jbe@172 583 break
jbe@172 584 end
jbe@172 585 if line == "" then
jbe@172 586 streamer = streamed_post_params[field_name]
jbe@172 587 if not streamer then
jbe@172 588 for i, rule in ipairs(streamed_post_param_patterns) do
jbe@172 589 if string.match(field_name, rule[1]) then
jbe@172 590 streamer = rule[2]
jbe@172 591 break
jbe@172 592 end
jbe@172 593 end
jbe@172 594 end
jbe@172 595 if not streamer then
jbe@172 596 value_parts = {}
jbe@172 597 streamer = default_streamer
jbe@172 598 end
jbe@172 599 streamer(remaining, field_name, metadata)
jbe@172 600 return
jbe@172 601 end
jbe@172 602 headerdata = remaining
jbe@172 603 local header_key, header_value = string.match(line, "^([^:]*):[ \t]*(.-)[ \t]*$")
jbe@172 604 if not header_key then
jbe@172 605 request_error(true, "400 Bad Request", "Invalid header in multipart/form-data part")
jbe@172 606 end
jbe@172 607 header_key = string.lower(header_key)
jbe@172 608 if header_key == "content-disposition" then
jbe@172 609 local escaped_header_value = string.gsub(header_value, '"[^"]*"', function(str)
jbe@172 610 return string.gsub(str, "=", "==")
jbe@172 611 end)
jbe@172 612 field_name = string.match(escaped_header_value, ';[ \t]*name="([^"]*)"')
jbe@172 613 if field_name then
jbe@172 614 field_name = string.gsub(field_name, "==", "=")
jbe@172 615 else
jbe@172 616 field_name = string.match(header_value, ';[ \t]*name=([^"; \t]+)')
jbe@172 617 end
jbe@172 618 metadata.file_name = string.match(escaped_header_value, ';[ \t]*filename="([^"]*)"')
jbe@172 619 if metadata.file_name then
jbe@172 620 metadata.file_name = string.gsub(metadata.file_name, "==", "=")
jbe@172 621 else
jbe@172 622 string.match(header_value, ';[ \t]*filename=([^"; \t]+)')
jbe@172 623 end
jbe@172 624 elseif header_key == "content-type" then
jbe@172 625 metadata.content_type = header_value
jbe@172 626 elseif header_key == "content-transfer-encoding" then
jbe@172 627 request_error(true, "400 Bad Request", "Content-transfer-encoding not supported by multipart/form-data parser")
jbe@172 628 end
jbe@172 629 end
jbe@172 630 end
jbe@172 631 end
jbe@172 632 local skippart = true -- ignore data until first boundary
jbe@172 633 local afterbound = false -- interpret 2 bytes after boundary ("\r\n" or "--")
jbe@172 634 local terminated = false -- final boundary read
jbe@172 635 local bigchunk = ""
jbe@172 636 request:set_request_body_streamer(function(chunk)
jbe@172 637 if chunk == nil then
jbe@172 638 if not terminated then
jbe@172 639 request_error(true, "400 Bad Request", "Premature end of multipart/form-data request body")
jbe@172 640 end
jbe@172 641 request.post_metadata_list, request.post_metadata = post_metadata_list, post_metadata
jbe@172 642 end
jbe@172 643 if terminated then
jbe@172 644 return
jbe@172 645 end
jbe@172 646 bigchunk = bigchunk .. chunk
jbe@172 647 while true do
jbe@172 648 if afterbound then
jbe@172 649 if #bigchunk <= 2 then
jbe@172 650 return
jbe@172 651 end
jbe@172 652 local terminator = string.sub(bigchunk, 1, 2)
jbe@172 653 if terminator == "\r\n" then
jbe@172 654 afterbound = false
jbe@172 655 bigchunk = string.sub(bigchunk, 3)
jbe@172 656 elseif terminator == "--" then
jbe@172 657 terminated = true
jbe@172 658 bigchunk = nil
jbe@172 659 return
jbe@172 660 else
jbe@172 661 request_error(true, "400 Bad Request", "Error while parsing multipart body (expected CRLF or double minus)")
jbe@172 662 end
jbe@172 663 end
jbe@172 664 local pos1, pos2 = string.find(bigchunk, boundary, 1, true)
jbe@172 665 if not pos1 then
jbe@172 666 if not skippart then
jbe@172 667 local safe = #bigchunk-#boundary
jbe@172 668 if safe > 0 then
jbe@172 669 stream_part_chunk(string.sub(bigchunk, 1, safe))
jbe@172 670 bigchunk = string.sub(bigchunk, safe+1)
jbe@172 671 end
jbe@172 672 end
jbe@172 673 return
jbe@172 674 end
jbe@172 675 if not skippart then
jbe@172 676 stream_part_chunk(string.sub(bigchunk, 1, pos1 - 1))
jbe@172 677 stream_part_finish()
jbe@172 678 else
jbe@172 679 boundary = "\r\n" .. boundary
jbe@172 680 skippart = false
jbe@172 681 end
jbe@172 682 bigchunk = string.sub(bigchunk, pos2 + 1)
jbe@172 683 afterbound = true
jbe@172 684 end
jbe@172 685 end)
jbe@172 686 else
jbe@172 687 request_error(true, "415 Unsupported Media Type", "Unknown Content-Type of request body")
jbe@172 688 end
jbe@172 689 end
jbe@172 690 end
jbe@172 691 end
jbe@172 692 -- function to prepare body processing:
jbe@162 693 local function prepare()
jbe@164 694 assert_not_faulty()
jbe@172 695 if process_body_chunk == nil then
jbe@172 696 default_request_body_handling()
jbe@172 697 end
jbe@171 698 if state ~= "init" then
jbe@162 699 return
jbe@162 700 end
jbe@171 701 consume = coroutine.wrap(read_body)
jbe@162 702 state = "no_status_sent"
jbe@171 703 if request.headers_flags["Expect"]["100-continue"] then
jbe@171 704 request:send_status("100 Continue")
jbe@171 705 request:finish_headers()
jbe@171 706 end
jbe@162 707 end
jbe@163 708 -- method to ignore input and close connection after response:
jbe@163 709 function request:monologue()
jbe@164 710 assert_not_faulty()
jbe@163 711 if
jbe@163 712 state == "headers_sent" or
jbe@163 713 state == "finished"
jbe@163 714 then
jbe@163 715 error("All HTTP headers have already been sent")
jbe@163 716 end
jbe@164 717 local old_state = state
jbe@164 718 state = "faulty"
jbe@163 719 consume = drain
jbe@163 720 close_requested = true
jbe@171 721 if old_state == "init" then
jbe@163 722 state = "no_status_sent"
jbe@164 723 else
jbe@164 724 state = old_state
jbe@162 725 end
jbe@162 726 end
jbe@163 727 --
jbe@162 728 -- method to send a HTTP response status (e.g. "200 OK"):
jbe@162 729 function request:send_status(status)
jbe@162 730 prepare()
jbe@164 731 local old_state = state
jbe@164 732 state = "faulty"
jbe@164 733 if old_state == "info_status_sent" then
jbe@162 734 send_flush("\r\n")
jbe@164 735 elseif old_state ~= "no_status_sent" then
jbe@162 736 error("HTTP status has already been sent")
jbe@162 737 end
jbe@162 738 local status1 = string.sub(status, 1, 1)
jbe@162 739 local status3 = string.sub(status, 1, 3)
jbe@162 740 send("HTTP/1.1 ", status, "\r\n", preamble)
jbe@162 741 local wrb = status_without_response_body[status3]
jbe@162 742 if wrb then
jbe@162 743 state = "bodyless_status_sent"
jbe@162 744 if wrb == "zero_content_length" then
jbe@162 745 request:send_header("Content-Length", 0)
jbe@162 746 end
jbe@162 747 elseif status1 == "1" then
jbe@162 748 state = "info_status_sent"
jbe@162 749 else
jbe@162 750 state = "status_sent"
jbe@162 751 end
jbe@162 752 end
jbe@162 753 -- method to send a HTTP response header:
jbe@162 754 -- (key and value must be provided as separate args)
jbe@162 755 function request:send_header(key, value)
jbe@164 756 assert_not_faulty()
jbe@171 757 if state == "init" or state == "no_status_sent" then
jbe@162 758 error("HTTP status has not been sent yet")
jbe@162 759 elseif
jbe@164 760 state == "headers_sent" or
jbe@164 761 state == "finished"
jbe@162 762 then
jbe@162 763 error("All HTTP headers have already been sent")
jbe@162 764 end
jbe@162 765 local key_lower = string.lower(key)
jbe@162 766 if key_lower == "content-length" then
jbe@162 767 if state == "info_status_sent" then
jbe@162 768 error("Cannot set Content-Length for informational status response")
jbe@162 769 end
jbe@162 770 local cl = assert(tonumber(value), "Invalid content-length")
jbe@162 771 if content_length == nil then
jbe@162 772 content_length = cl
jbe@162 773 elseif content_length == cl then
jbe@162 774 return
jbe@162 775 else
jbe@162 776 error("Content-Length has been set multiple times with different values")
jbe@162 777 end
jbe@162 778 elseif key_lower == "connection" then
jbe@162 779 for entry in string.gmatch(string.lower(value), "[^,]+") do
jbe@162 780 if string.match(entry, "^[ \t]*close[ \t]*$") then
jbe@162 781 if state == "info_status_sent" then
jbe@162 782 error("Cannot set \"Connection: close\" for informational status response")
jbe@162 783 end
jbe@162 784 close_responded = true
jbe@162 785 break
jbe@162 786 end
jbe@162 787 end
jbe@162 788 end
jbe@162 789 assert_output(socket:write(key, ": ", value, "\r\n"))
jbe@162 790 end
jbe@162 791 -- function to terminate header section in response, optionally flushing:
jbe@162 792 -- (may be called multiple times unless response is finished)
jbe@162 793 local function finish_headers(with_flush)
jbe@162 794 if state == "finished" then
jbe@162 795 error("Response has already been finished")
jbe@162 796 elseif state == "info_status_sent" then
jbe@162 797 send_flush("\r\n")
jbe@162 798 state = "no_status_sent"
jbe@162 799 elseif state == "bodyless_status_sent" then
jbe@162 800 if close_requested and not close_responded then
jbe@162 801 request:send_header("Connection", "close")
jbe@162 802 end
jbe@162 803 send("\r\n")
jbe@163 804 finish()
jbe@162 805 state = "finished"
jbe@162 806 elseif state == "status_sent" then
jbe@162 807 if not content_length then
jbe@162 808 request:send_header("Transfer-Encoding", "chunked")
jbe@162 809 end
jbe@162 810 if close_requested and not close_responded then
jbe@162 811 request:send_header("Connection", "close")
jbe@162 812 end
jbe@162 813 send("\r\n")
jbe@162 814 if request.method == "HEAD" then
jbe@163 815 finish()
jbe@162 816 elseif with_flush then
jbe@162 817 send_flush()
jbe@162 818 end
jbe@162 819 state = "headers_sent"
jbe@162 820 elseif state ~= "headers_sent" then
jbe@162 821 error("HTTP status has not been sent yet")
jbe@162 822 end
jbe@162 823 end
jbe@162 824 -- method to finish and flush headers:
jbe@162 825 function request:finish_headers()
jbe@164 826 assert_not_faulty()
jbe@162 827 finish_headers(true)
jbe@162 828 end
jbe@164 829 -- method to send body data:
jbe@164 830 function request:send_data(...)
jbe@164 831 assert_not_faulty()
jbe@164 832 if output_state == "info_status_sent" then
jbe@164 833 error("No (non-informational) HTTP status has been sent yet")
jbe@164 834 elseif output_state == "bodyless_status_sent" then
jbe@164 835 error("Cannot send response data for body-less status message")
jbe@164 836 end
jbe@164 837 finish_headers(false)
jbe@164 838 if output_state ~= "headers_sent" then
jbe@164 839 error("Unexpected internal status in HTTP engine")
jbe@164 840 end
jbe@164 841 if request.method == "HEAD" then
jbe@164 842 return
jbe@164 843 end
jbe@164 844 for i = 1, select("#", ...) do
jbe@164 845 local str = tostring(select(i, ...))
jbe@164 846 if #str > 0 then
jbe@164 847 if content_length then
jbe@164 848 local bytes_to_send = #str
jbe@164 849 if bytes_sent + bytes_to_send > content_length then
jbe@164 850 error("Content length exceeded")
jbe@164 851 else
jbe@164 852 send(str)
jbe@164 853 bytes_sent = bytes_sent + bytes_to_send
jbe@164 854 end
jbe@164 855 else
jbe@164 856 chunk_bytes = chunk_bytes + #str
jbe@164 857 chunk_parts[#chunk_parts+1] = str
jbe@164 858 end
jbe@164 859 end
jbe@164 860 end
jbe@164 861 if chunk_bytes >= output_chunk_size then
jbe@164 862 send_chunk()
jbe@164 863 end
jbe@164 864 end
jbe@165 865 -- method to flush output buffer:
jbe@165 866 function request:flush()
jbe@165 867 assert_not_faulty()
jbe@165 868 send_chunk()
jbe@165 869 send_flush()
jbe@165 870 end
jbe@165 871 -- method to finish response:
jbe@165 872 function request:finish()
jbe@165 873 assert_not_faulty()
jbe@165 874 if state == "finished" then
jbe@165 875 return
jbe@165 876 elseif state == "info_status_sent" then
jbe@165 877 error("Informational HTTP response can be finished with :finish_headers() method")
jbe@165 878 end
jbe@165 879 finish_headers(false)
jbe@165 880 if state == "headers_sent" then
jbe@165 881 if request.method ~= "HEAD" then
jbe@165 882 state = "faulty"
jbe@165 883 if content_length then
jbe@165 884 if bytes_sent ~= content_length then
jbe@165 885 error("Content length not used")
jbe@165 886 end
jbe@165 887 else
jbe@165 888 send_chunk()
jbe@165 889 send("0\r\n\r\n")
jbe@165 890 end
jbe@165 891 finish()
jbe@165 892 end
jbe@165 893 state = "finished"
jbe@165 894 elseif state ~= "finished" then
jbe@165 895 error("Unexpected internal status in HTTP engine")
jbe@165 896 end
jbe@165 897 end
jbe@172 898 -- method to register POST param stream handler for a single field name:
jbe@172 899 function request:stream_post_param(field_name, callback)
jbe@172 900 if state ~= "init" then
jbe@172 901 error("Cannot setup request body streamer at this stage")
jbe@172 902 end
jbe@172 903 streamed_post_params[field_name] = callback
jbe@172 904 end
jbe@172 905 -- method to register POST param stream handler for a field name pattern:
jbe@172 906 function request:stream_post_params(pattern, callback)
jbe@172 907 if state ~= "init" then
jbe@172 908 error("Cannot setup request body streamer at this stage")
jbe@172 909 end
jbe@172 910 streamed_post_param_patterns[#streamed_post_param_patterns+1] = {pattern, callback}
jbe@172 911 end
jbe@172 912 -- method to register request body stream handler
jbe@172 913 function request:set_request_body_streamer(callback)
jbe@172 914 if state ~= "init" then
jbe@172 915 error("Cannot setup request body streamer at this stage")
jbe@172 916 end
jbe@172 917 local inprogress = false
jbe@172 918 local buffer = {}
jbe@172 919 process_body_chunk = function(chunk)
jbe@172 920 if inprogress then
jbe@172 921 buffer[#buffer+1] = chunk
jbe@172 922 else
jbe@172 923 inprogress = true
jbe@172 924 callback(chunk)
jbe@172 925 while #buffer > 0 do
jbe@172 926 chunk = table.concat(buffer)
jbe@172 927 buffer = {}
jbe@172 928 callback(chunk)
jbe@172 929 end
jbe@172 930 inprogress = false
jbe@172 931 end
jbe@172 932 end
jbe@172 933 end
jbe@172 934 -- method to start reading request body
jbe@172 935 function request:consume_input()
jbe@172 936 prepare()
jbe@172 937 consume_all()
jbe@172 938 end
jbe@172 939 -- method to stream request body
jbe@172 940 function request:stream_request_body(callback)
jbe@172 941 request:set_request_body_streamer(function(chunk)
jbe@172 942 if chunk ~= nil then
jbe@172 943 callback(chunk)
jbe@172 944 end
jbe@172 945 end)
jbe@172 946 request:consume_input()
jbe@172 947 end
jbe@172 948 -- metamethod to read special attibutes of request object:
jbe@172 949 function request_mt:__index(key, value)
jbe@172 950 if key == "body" then
jbe@172 951 local chunks = {}
jbe@172 952 request:stream_request_body(function(chunk)
jbe@172 953 chunks[#chunks+1] = chunk
jbe@172 954 end)
jbe@172 955 self.body = table.concat(chunks)
jbe@172 956 return self.body
jbe@172 957 elseif
jbe@172 958 key == "post_params_list" or key == "post_params" or
jbe@172 959 key == "post_metadata_list" or key == "post_metadata"
jbe@172 960 then
jbe@172 961 prepare()
jbe@172 962 consume_all()
jbe@172 963 return self[key]
jbe@172 964 end
jbe@172 965 end
jbe@173 966 -- coroutine for reading headers:
jbe@173 967 local function read_headers()
jbe@176 968 -- initialize limit:
jbe@176 969 local limit = header_size_limit
jbe@173 970 -- read and parse request line:
jbe@176 971 local line = read_eof(limit, "\n")
jbe@173 972 if not line then
jbe@173 973 return false, survive
jbe@173 974 end
jbe@176 975 limit = limit - #line
jbe@176 976 if limit == 0 then
jbe@173 977 return false, request_error(false, "414 Request-URI Too Long")
jbe@173 978 end
jbe@173 979 local target, proto
jbe@173 980 request.method, target, proto =
jbe@173 981 line:match("^([^ \t\r]+)[ \t]+([^ \t\r]+)[ \t]*([^ \t\r]*)[ \t]*\r?\n$")
jbe@173 982 if not request.method then
jbe@173 983 return false, request_error(false, "400 Bad Request")
jbe@173 984 elseif proto ~= "HTTP/1.1" then
jbe@173 985 return false, request_error(false, "505 HTTP Version Not Supported")
jbe@173 986 end
jbe@173 987 -- read and parse headers:
jbe@173 988 while true do
jbe@176 989 local line = read(limit, "\n");
jbe@176 990 limit = limit - #line
jbe@173 991 if line == "\r\n" or line == "\n" then
jbe@173 992 break
jbe@173 993 end
jbe@176 994 if limit == 0 then
jbe@173 995 return false, request_error(false, "431 Request Header Fields Too Large")
jbe@173 996 end
jbe@173 997 local key, value = string.match(line, "^([^ \t\r]+):[ \t]*(.-)[ \t]*\r?\n$")
jbe@173 998 if not key then
jbe@173 999 return false, request_error(false, "400 Bad Request")
jbe@173 1000 end
jbe@173 1001 local values = request.headers[key]
jbe@173 1002 values[#values+1] = value
jbe@173 1003 end
jbe@173 1004 return true -- success
jbe@173 1005 end
jbe@160 1006 -- wait for input:
jbe@160 1007 if not poll(socket_set, nil, request_idle_timeout) then
jbe@163 1008 return request_error(false, "408 Request Timeout", "Idle connection timed out")
jbe@38 1009 end
jbe@173 1010 -- read headers (with timeout):
jbe@173 1011 do
jbe@173 1012 local coro = coroutine.wrap(read_headers)
jbe@173 1013 local starttime = request_header_timeout and moonbridge_io.timeref()
jbe@173 1014 while true do
jbe@173 1015 local status, retval = coro()
jbe@173 1016 if status == nil then
jbe@173 1017 local remaining
jbe@173 1018 if request_header_timeout then
jbe@173 1019 remaining = request_header_timeout - moonbridge_io.timeref(starttime)
jbe@173 1020 end
jbe@173 1021 if not poll(socket_set, nil, remaining) then
jbe@173 1022 return request_error(false, "408 Request Timeout", "Timeout while receiving headers")
jbe@173 1023 end
jbe@173 1024 elseif status == false then
jbe@173 1025 return retval
jbe@173 1026 elseif status == true then
jbe@173 1027 break
jbe@173 1028 else
jbe@173 1029 error("Unexpected yield value")
jbe@173 1030 end
jbe@173 1031 end
jbe@173 1032 end
jbe@173 1033 -- process "Connection: close" header if existent:
jbe@173 1034 connection_close_requested = request.headers_flags["Connection"]["close"]
jbe@173 1035 -- process "Content-Length" header if existent:
jbe@173 1036 do
jbe@173 1037 local values = request.headers_csv_table["Content-Length"]
jbe@173 1038 if #values > 0 then
jbe@173 1039 request_body_content_length = tonumber(values[1])
jbe@173 1040 local proper_value = tostring(request_body_content_length)
jbe@173 1041 for i, value in ipairs(values) do
jbe@173 1042 value = string.match(value, "^0*(.*)")
jbe@173 1043 if value ~= proper_value then
jbe@173 1044 return request_error(false, "400 Bad Request", "Content-Length header(s) invalid")
jbe@173 1045 end
jbe@173 1046 end
jbe@176 1047 if request_body_content_length > body_size_limit then
jbe@173 1048 return request_error(false, "413 Request Entity Too Large", "Announced request body size is too big")
jbe@173 1049 end
jbe@173 1050 end
jbe@173 1051 end
jbe@173 1052 -- process "Transfer-Encoding" header if existent:
jbe@173 1053 do
jbe@173 1054 local flag = request.headers_flags["Transfer-Encoding"]["chunked"]
jbe@173 1055 local list = request.headers_csv_table["Transfer-Encoding"]
jbe@173 1056 if (flag and #list ~= 1) or (not flag and #list ~= 0) then
jbe@173 1057 return request_error(false, "400 Bad Request", "Unexpected Transfer-Encoding")
jbe@173 1058 end
jbe@173 1059 end
jbe@173 1060 -- process "Expect" header if existent:
jbe@173 1061 for i, value in ipairs(request.headers_csv_table["Expect"]) do
jbe@173 1062 if string.lower(value) ~= "100-continue" then
jbe@173 1063 return request_error(false, "417 Expectation Failed", "Unexpected Expect header")
jbe@173 1064 end
jbe@173 1065 end
jbe@173 1066 -- get mandatory Host header according to RFC 7230:
jbe@173 1067 request.host = request.headers_value["Host"]
jbe@173 1068 if not request.host then
jbe@173 1069 return request_error(false, "400 Bad Request", "No valid host header")
jbe@173 1070 end
jbe@173 1071 -- parse request target:
jbe@173 1072 request.path, request.query = string.match(target, "^/([^?]*)(.*)$")
jbe@173 1073 if not request.path then
jbe@173 1074 local host2
jbe@173 1075 host2, request.path, request.query = string.match(target, "^[Hh][Tt][Tt][Pp]://([^/?]+)/?([^?]*)(.*)$")
jbe@173 1076 if host2 then
jbe@173 1077 if request.host ~= host2 then
jbe@173 1078 return request_error(false, "400 Bad Request", "No valid host header")
jbe@173 1079 end
jbe@173 1080 elseif not (target == "*" and request.method == "OPTIONS") then
jbe@173 1081 return request_error(false, "400 Bad Request", "Invalid request target")
jbe@173 1082 end
jbe@173 1083 end
jbe@173 1084 -- parse GET params:
jbe@173 1085 if request.query then
jbe@173 1086 read_urlencoded_form(request.get_params_list, request.query)
jbe@173 1087 end
jbe@173 1088 -- parse cookies:
jbe@173 1089 for i, line in ipairs(request.headers["Cookie"]) do
jbe@173 1090 for rawkey, rawvalue in
jbe@173 1091 string.gmatch(line, "([^=; ]*)=([^=; ]*)")
jbe@173 1092 do
jbe@173 1093 request.cookies[decode_uri(rawkey)] = decode_uri(rawvalue)
jbe@173 1094 end
jbe@173 1095 end
jbe@173 1096 -- (re)set timeout for handler:
jbe@173 1097 timeout(response_timeout or 0)
jbe@173 1098 -- call underlying handler and remember boolean result:
jbe@173 1099 if handler(request) ~= true then survive = false end
jbe@173 1100 -- finish request (unless already done by underlying handler):
jbe@173 1101 request:finish()
jbe@173 1102 -- stop timeout timer:
jbe@173 1103 timeout(0)
jbe@162 1104 until close_responded
jbe@0 1105 return survive
jbe@0 1106 end
jbe@0 1107 end
jbe@0 1108
jbe@0 1109 return _M
jbe@0 1110

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