mirror of
https://github.com/LDDestroier/CC/
synced 2024-12-04 23:39:58 +00:00
332 lines
8.9 KiB
Lua
332 lines
8.9 KiB
Lua
--[[
|
|
DISKNET - by LDDestroier
|
|
Refer to https://github.com/LDDestroier/CC/blob/master/disknet.md for documentation
|
|
--]]
|
|
|
|
local disknet = disknet or {}
|
|
|
|
local tArg = {...}
|
|
|
|
disknet.mainPath = "disk/DISKNET" -- path of shared file
|
|
local limitChannelsToModem = false -- if true, can only use number channels from 1 to 65535
|
|
local maximumBufferSize = 64 -- largest amount of messages per channel buffered
|
|
disknet.checkDelay = 0.2 -- amount of time (seconds) between checking the file -- if 0, checks super fast so don't do that
|
|
|
|
local isUsingTweaked = false
|
|
if _HOST then
|
|
if _HOST:find("CCEmuX") or _HOST:find("CC:Tweaked") or _HOST:find("[(]Minecraft") then
|
|
isUsingTweaked = true
|
|
end
|
|
end
|
|
|
|
local openChannels = {}
|
|
local yourID = os.getComputerID()
|
|
local uniqueID = math.random(1, 2^31 - 1) -- prevents receiving your own messages
|
|
disknet.msgCheckList = {} -- makes sure duplicate messages aren't received
|
|
local ageToToss = 0.005 -- amount of time before a message is removed
|
|
|
|
-- used for synching times between different emulators
|
|
disknet._timeMod = 0
|
|
|
|
-- do not think for one second that os.epoch("utc") would be a proper substitute
|
|
local getTime = function()
|
|
if os.day then
|
|
return (os.time() + (-1 + os.day()) * 24) + disknet._timeMod
|
|
else
|
|
return os.time() + disknet._timeMod
|
|
end
|
|
end
|
|
|
|
local function serialize(tbl)
|
|
local output = "{"
|
|
local noKlist = {}
|
|
local cc = table.concat
|
|
for i = 1, #tbl do
|
|
if type(tbl[i]) == "table" then
|
|
output = output .. serialize(tbl[i])
|
|
elseif type(tbl[i]) == "string" then
|
|
output = cc({output, "\"", tbl[i], "\""})
|
|
else
|
|
output = output .. tbl[i]
|
|
end
|
|
noKlist[i] = true
|
|
output = output .. ","
|
|
end
|
|
for k,v in pairs(tbl) do
|
|
if not noKlist[k] then
|
|
if type(k) == "number" or type(k) == "table" then
|
|
output = cc({output, "[", k, "]="})
|
|
else
|
|
output = cc({output, k, "="})
|
|
end
|
|
if type(v) == "table" then
|
|
output = output .. serialize(v)
|
|
elseif type(v) == "string" then
|
|
output = cc({output, "\"", v, "\""})
|
|
else
|
|
output = output .. v
|
|
end
|
|
output = output .. ","
|
|
end
|
|
end
|
|
return output:sub(1, -2):gsub("\n", "\\n") .. "}"
|
|
end
|
|
|
|
local readFile = function(path)
|
|
local file = fs.open(path, "r")
|
|
local contents = file.readAll()
|
|
file.close()
|
|
return contents
|
|
end
|
|
|
|
local writeFile = function(path, contents)
|
|
local file = fs.open(path, "w")
|
|
file.write(contents)
|
|
file.close()
|
|
end
|
|
|
|
-- if 'limitChannelsToModem', then will make sure that channel is a number between 0 and 65535
|
|
local checkValidChannel = function(channel)
|
|
if limitChannelsToModem then
|
|
if type(channel) == "number" then
|
|
if channel < 0 or channel > 65535 then
|
|
return false, "channel must be between 0 and 65535"
|
|
else
|
|
return true
|
|
end
|
|
else
|
|
return false, "channel must be number"
|
|
end
|
|
else
|
|
if type(channel) == "string" or type(channel) == "number" then
|
|
return true
|
|
else
|
|
return false, "channel must be castable to string"
|
|
end
|
|
end
|
|
end
|
|
|
|
disknet.isOpen = function(channel)
|
|
local valid, grr = checkValidChannel(channel)
|
|
if valid then
|
|
for i = 1, #openChannels do
|
|
if openChannels[i] == channel then
|
|
return true
|
|
end
|
|
end
|
|
return false
|
|
else
|
|
error(grr)
|
|
end
|
|
end
|
|
isOpen = disknet.isOpen
|
|
|
|
disknet.open = function(channel)
|
|
local valid, grr = checkValidChannel(channel)
|
|
if valid then
|
|
openChannels[#openChannels + 1] = channel
|
|
return true
|
|
else
|
|
error(grr)
|
|
end
|
|
end
|
|
open = disknet.open
|
|
|
|
disknet.close = function(channel)
|
|
local valid, grr = checkValidChannel(channel)
|
|
if valid then
|
|
for i = 1, #openChannels do
|
|
if openChannels[i] == channel then
|
|
table.remove(openChannels, i)
|
|
return true
|
|
end
|
|
end
|
|
return false
|
|
else
|
|
error(grr)
|
|
end
|
|
end
|
|
close = disknet.close
|
|
|
|
disknet.closeAll = function()
|
|
openChannels = {}
|
|
end
|
|
closeAll = disknet.closeAll
|
|
|
|
disknet.send = function(channel, message, recipient)
|
|
local valid, grr = checkValidChannel(channel)
|
|
if valid then
|
|
if not fs.exists(fs.combine(disknet.mainPath, tostring(channel))) then
|
|
fs.makeDir(disknet.mainPath)
|
|
fs.open(fs.combine(disknet.mainPath, tostring(channel)), "w").close()
|
|
end
|
|
local contents = textutils.unserialize(readFile(fs.combine(disknet.mainPath, tostring(channel))))
|
|
local cTime = getTime()
|
|
if disknet.isOpen(channel) then
|
|
local file = fs.open(fs.combine(disknet.mainPath, tostring(channel)), "w")
|
|
if contents then
|
|
contents[#contents + 1] = {
|
|
time = cTime,
|
|
id = yourID,
|
|
uniqueID = uniqueID,
|
|
messageID = math.random(1, 2^31 - 1),
|
|
channel = channel,
|
|
recipient = recipient,
|
|
message = message,
|
|
}
|
|
for i = #contents, 1, -1 do
|
|
if cTime - (contents[i].time or 0) > ageToToss then
|
|
table.remove(contents, i)
|
|
end
|
|
end
|
|
if #contents > maximumBufferSize then
|
|
table.remove(contents, 1)
|
|
end
|
|
file.write(serialize(contents))
|
|
else
|
|
file.write(serialize({{
|
|
time = cTime,
|
|
id = yourID,
|
|
uniqueID = uniqueID,
|
|
messageID = math.random(1, 2^31 - 1),
|
|
channel = channel,
|
|
message = message,
|
|
}}):gsub("\n[ ]*", ""))
|
|
end
|
|
file.close()
|
|
return true
|
|
else
|
|
return false
|
|
end
|
|
else
|
|
error(grr)
|
|
end
|
|
end
|
|
send = disknet.send
|
|
|
|
local fList, pList, sList = {}, {}, {}
|
|
|
|
local loadFList = function()
|
|
fList, pList = {}, {}
|
|
if channel then
|
|
fList = {fs.open(fs.combine(disknet.mainPath, tostring(channel)), "r")}
|
|
pList = {fs.combine(disknet.mainPath, tostring(channel))}
|
|
else
|
|
for i = 1, #openChannels do
|
|
fList[i] = fs.open(fs.combine(disknet.mainPath, tostring(openChannels[i])), "r")
|
|
pList[i] = fs.combine(disknet.mainPath, tostring(openChannels[i]))
|
|
end
|
|
end
|
|
end
|
|
|
|
-- returns: string message, string/number channel, number senderID, number timeThatMessageWasSentAt
|
|
disknet.receive = function(channel, senderFilter)
|
|
local valid, grr = checkValidChannel(channel)
|
|
if valid or not channel then
|
|
|
|
local output, contents
|
|
local doRewrite = false
|
|
|
|
local good, goddamnit = pcall(function()
|
|
local cTime = getTime()
|
|
local goWithIt = false
|
|
while true do
|
|
loadFList()
|
|
for i = 1, #fList do
|
|
contents = fList[i].readAll()
|
|
if contents ~= "" then
|
|
contents = textutils.unserialize(contents)
|
|
if type(contents) == "table" then
|
|
if contents[1] then
|
|
if not output then
|
|
for look = 1, #contents do
|
|
if (contents[look].uniqueID ~= uniqueID) and (not disknet.msgCheckList[contents[look].messageID]) then -- make sure you're not receiving messages that you sent
|
|
if (not contents[look].recipient) or contents[look].recipient == yourID then -- make sure that messages intended for others aren't picked up
|
|
if (not channel) or channel == contents[look].channel then -- make sure that messages are the same channel as the filter, if any
|
|
if (not senderFilter) or senderFilter == contents[look].id then -- make sure that the sender is the same as the id filter, if any
|
|
if (not isUsingTweaked) and math.abs(contents[look].time - getTime()) >= ageToToss then -- if using something besides CC:Tweaked/CCEmuX, adjust your time.
|
|
disknet._timeMod = contents[look].time - getTime()
|
|
cTime = getTime()
|
|
goWithIt = true
|
|
end
|
|
if cTime - (contents[look].time or 0) <= ageToToss or goWithIt then -- make sure the message isn't too old
|
|
disknet.msgCheckList[contents[look].messageID] = true
|
|
output = {}
|
|
for k,v in pairs(contents[look]) do
|
|
output[k] = v
|
|
end
|
|
break
|
|
end
|
|
end
|
|
end
|
|
end
|
|
end
|
|
end
|
|
end
|
|
|
|
-- delete old msesages
|
|
doRewrite = false
|
|
for t = #contents, 1, -1 do
|
|
if cTime - (contents[t].time or 0) > ageToToss or cTime - (contents[t].time or 0) < -1 then
|
|
disknet.msgCheckList[contents[t].messageID] = nil
|
|
table.remove(contents, t)
|
|
doRewrite = true
|
|
end
|
|
end
|
|
if doRewrite then
|
|
writeFile(pList[i], serialize(contents))
|
|
end
|
|
if output then
|
|
break
|
|
end
|
|
end
|
|
end
|
|
end
|
|
end
|
|
if output then
|
|
break
|
|
else
|
|
if disknet.checkDelay > 0 then
|
|
sleep(disknet.checkDelay)
|
|
else
|
|
os.queueEvent("")
|
|
os.pullEvent("")
|
|
end
|
|
end
|
|
for i = 1, #fList do
|
|
fList[i].close()
|
|
end
|
|
fList, pList = {}, {}
|
|
end
|
|
end)
|
|
|
|
if good then
|
|
if contents then
|
|
return output.message, output.channel, output.id, output.time + disknet._timeMod
|
|
else
|
|
return nil
|
|
end
|
|
else
|
|
for i = 1, #fList do
|
|
fList[i].close()
|
|
end
|
|
error(goddamnit, 0)
|
|
end
|
|
else
|
|
error(grr)
|
|
end
|
|
end
|
|
receive = disknet.receive
|
|
|
|
-- not really needed if going between CCEmuX and another emulator, but may be needed between two separate CCEmuX daemons
|
|
disknet.receive_TS = function(...)
|
|
local message, channel, id, time = disknet.receive(...)
|
|
if time then
|
|
disknet._timeMod = time - getTime()
|
|
end
|
|
return message, channel, id, time
|
|
end
|
|
receive_TS = disknet.receive_TS
|
|
|
|
return disknet
|