added an FRequest client and server

This commit is contained in:
Izaya 2019-07-23 14:11:40 +10:00
parent 8ca414e312
commit dc03ad94bc
2 changed files with 118 additions and 0 deletions

40
exec/fget.lua Normal file
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local minitel = require "minitel"
local tA = {...}
local function parseURL(url)
local proto,addr = url:match("(.-)://(.+)")
addr = addr or url
local hp, path = addr:match("(.-)(/.*)")
hp, path = hp or addr, path or "/"
local host, port = hp:match("(.+):(.+)")
host = host or hp
return proto, host, port, path
end
local proto, host, port, path = parseURL(tA[1])
proto,port = proto or "fget", port or 70
local fname, rtype = tA[2] or "-", tA[3] or "t"
local sock = minitel.open(host,port)
local f = nil
if fname ~= "-" then
f = io.open(fname,"w")
if not f then error("couldn't open file for writing") end
else
f = io.open(os.getenv("t"))
f.close = function() end
end
if not sock then error("couldn't open connection to host") end
sock:write(string.format("%s%s\n",rtype,path))
local rtype, buf = "", ""
repeat
coroutine.yield()
rtype = sock:read(1)
until rtype ~= ""
repeat
coroutine.yield()
buf = sock:read("*a")
f:write(buf)
until sock.state == "closed" and buf == ""
f:close()

78
service/fserv.lua Normal file
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local minitel = require "minitel"
local serial = require "serialization"
local cfg = {["path"]="/boot/srv/frequest",["port"]=70}
f=io.open("/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
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
socket:close()
end
local function httpHandler(socket,rtype,path)
socket:write("fHTTP requests are not yet implemented.")
socket:close()
end
local function socketHandler(socket)
return function()
local line = nil
repeat
coroutine.yield()
line = socket:read()
until line
local rtype, path = line:match("(.)(.+)")
if path:sub(1,6) == "/http/" or path:sub(1,5) == "http/" then
httpHandler(socket,rtype,path)
else
path = (cfg.path .. "/" .. path:gsub("../","")):gsub("/+","/")
fileHandler(socket,rtype,path)
end
socket:close()
end
end
while true do
os.spawn(socketHandler(minitel.listen(70)))
end