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- -- httpserver-request
- -- Part of nodemcu-httpserver, parses incoming client requests.
- -- Author: Marcos Kirsch
- local function validateMethod(method)
- local httpMethods = {GET=true, HEAD=true, POST=true, PUT=true, DELETE=true, TRACE=true, OPTIONS=true, CONNECT=true, PATCH=true}
- if httpMethods[method] then return true else return false end
- end
- local function uriToFilename(uri)
- return "http/" .. string.sub(uri, 2, -1)
- end
- local function parseArgs(args)
- local r = {}; i=1
- if args == nil or args == "" then return r end
- for arg in string.gmatch(args, "([^&]+)") do
- local name, value = string.match(arg, "(.*)=(.*)")
- if name ~= nil then r[name] = value end
- i = i + 1
- end
- return r
- end
- local function parseUri(uri)
- local r = {}
- local filename
- local ext
- local fullExt = {}
- if uri == nil then return r end
- if uri == "/" then uri = "/index.html" end
- questionMarkPos, b, c, d, e, f = uri:find("?")
- if questionMarkPos == nil then
- r.file = uri:sub(1, questionMarkPos)
- r.args = {}
- else
- r.file = uri:sub(1, questionMarkPos - 1)
- r.args = parseArgs(uri:sub(questionMarkPos+1, #uri))
- end
- filename = r.file
- while filename:match("%.") do
- filename,ext = filename:match("(.+)%.(.+)")
- table.insert(fullExt,1,ext)
- end
- r.ext = table.concat(fullExt,".")
- r.isScript = r.ext == "lua" or r.ext == "lc"
- r.file = uriToFilename(r.file)
- return r
- end
- -- Parses the client's request. Returns a dictionary containing pretty much everything
- -- the server needs to know about the uri.
- return function (request)
- local e = request:find("\r\n", 1, true)
- if not e then return nil end
- local line = request:sub(1, e - 1)
- local r = {}
- _, i, r.method, r.request = line:find("^([A-Z]+) (.-) HTTP/[1-9]+.[0-9]+$")
- r.methodIsValid = validateMethod(r.method)
- r.uri = parseUri(r.request)
- return r
- end
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