108 lines
2.6 KiB
Lua
108 lines
2.6 KiB
Lua
local minitel = require "minitel"
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local serial = require "serialization"
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local cfg = {["path"]="/boot/srv/frequest",["port"]=70}
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local function loadConfig(cfgpath)
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local f=io.open(cfgpath or "/boot/cfg/fserv.cfg","rb")
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if f then
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local ncfg = serial.unserialize(f:read("*a"))
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f:close()
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for k,v in pairs(ncfg) do
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cfg[k] = v
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end
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end
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end
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local function fileHandler(socket,rtype,path)
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syslog(string.format("[%s:%d] %s %s",socket.addr,socket.port,rtype,path),syslog.info,"fserv")
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if rtype == "t" then
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if fs.exists(path) and fs.isDirectory(path) then
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socket:write("d")
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for _,file in ipairs(fs.list(path)) do
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socket:write(file.."\n")
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end
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elseif fs.exists(path) and not fs.isDirectory(path) then
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local f,err = io.open(path,"rb")
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if f then
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socket:write("y")
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while true do
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local c = f:read(4096)
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if not c or c == "" then break end
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socket:write(c)
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end
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else
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socket:write("fFailed to open file: "..err)
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end
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else
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socket:write("nFile not found")
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end
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elseif rtype == "s" then
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if fs.exists(path) then
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local ftype = "f"
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if fs.isDirectory(path) then
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ftype = "d"
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end
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socket:write(string.format("y%s\n%d",ftype,fs.size(path)))
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else
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socket:write("nFile not found.")
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end
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else
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socket:write("fUnknown request type")
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end
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end
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local function httpHandler(socket,rtype,path)
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local tPath = fs.segments(path)
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local proto = table.remove(tPath,1)
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local url = string.format("%s://%s",proto,table.concat(tPath,"/"))
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local request = component.invoke(component.list("internet")(),"request",url)
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repeat
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coroutine.yield()
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until request.finishConnect()
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local code, message, headers = request.response()
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if code < 200 or code > 299 then
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socket:write(string.format("f%d\n%s",code,message))
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else
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socket:write("y")
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local data = ""
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repeat
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coroutine.yield()
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data = request.read()
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if data then
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socket:write(data)
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end
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until not data
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end
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end
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local function socketHandler(socket)
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return function()
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local line = nil
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repeat
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coroutine.yield()
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line = socket:read()
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until line
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local rtype, path = line:match("(.)(.+)")
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if fs.segments(path)[1] == "http" or fs.segments(path)[1] == "https" then
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httpHandler(socket,rtype,path)
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else
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path = (cfg.path .. "/" .. path:gsub("../","")):gsub("/+","/")
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fileHandler(socket,rtype,path)
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end
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socket:close()
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end
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end
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local function fileServer()
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while true do
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os.spawn(socketHandler(minitel.listen(70)),"fserv worker process")
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end
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end
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function start(cfgpath)
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loadConfig(cfgpath)
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return os.spawn(fileServer,"fserv")
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end
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return {start=start}
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