OC-PsychOS2/service/fserv.lua

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