OpenComputerScripts/fss.lua

106 lines
2.5 KiB
Lua

print("File Share Server")
print("Author: Github/Kiritow")
local component=require("component")
local shell=require("shell")
require("libevent")
local args,opts=shell.parse(...)
local argc=#args
local function cmd(cmdstr,infostr)
local old=component.gpu.setForeground(0xFFFF00)
print(cmdstr)
component.gpu.setForeground(0x0000FF)
print(infostr)
component.gpu.setForeground(old)
end
local function err(info)
local old=component.gpu.setForeground(0xFF0000)
print(infostr)
component.gpu.setForeground(old)
end
if(argc<1) then
print("Usage:")
cmd("fss <Directory> [<Port>] [-d]",
"Share a directory on specific port. Default port is 21. If with -d option, fss will run background.")
cmd("fss -s [<Port>]",
"Stop background fss on specific port.")
return
end
local op_stop=false
local op_daemon=false
for k in pairs(opts) do
if(k=="s") then
op_stop=true
elseif(k=="d") then
op_daemon=true
end
end
if(op_stop) then
local port=21
if(argc>0) then
port=tonumber(args[1])
end
if(not component.modem.isOpen(port)) then
err("Service is not running on port " .. port)
return
end
local bus=CreateEventBus()
local done=false
bus:listen("fss_stopped")
PushEvent("fss_stop")
local e=bus:next()
bus:close()
print("Service stopped.")
return
end
-- Server Program
local dir=args[1]
local port=21
if(argc>1) then
port=tonumber(args[2])
end
local bus=CreateEventBus()
bus:listen("modem_message")
bus:listen("fss_stop")
bus:listen("interrupted")
local modem=component.modem
if(not modem.open(port)) then
err("Failed to start service at port " .. port)
return
end
print("File Share Server started successfully.")
local xprint=io.write
while true do
local e=bus:next()
if(e.event=="modem_message" and e.port==port and e.data[1]=="fs_req") then
local filename=e.data[2]
local realfile=dir .. "/" .. filename
xprint("Requesting file: ",realfile," ")
local f=io.open(realfile,"rb")
if(f==nil) then
print("[Not Found]")
modem.send(e.senderAddress,22,"fs_ans_err")
else
local content=f:read("*a")
f:close()
modem.send(e.senderAddress,22,"fs_ans_ok",content)
print("[Sent]")
end
elseif(e.event=="fss_stop" or e.event=="interrupted") then
break
end
end
modem.close(port)
bus:close()
PushEvent("fss_stopped")
print("File Share Server stopped.")