opus/sys/apps/network/samba.lua

93 lines
1.9 KiB
Lua

local Event = require('opus.event')
local Socket = require('opus.socket')
local fs = _G.fs
local fileUid = 0
local fileHandles = { }
local function remoteOpen(fn, fl)
local fh = fs.open(fn, fl)
if fh then
local methods = { 'close', 'write', 'writeLine', 'flush', 'read', 'readLine', 'readAll', }
fileUid = fileUid + 1
fileHandles[fileUid] = fh
local vfh = {
methods = { },
fileUid = fileUid,
}
for _,m in ipairs(methods) do
if fh[m] then
table.insert(vfh.methods, m)
end
end
return vfh
end
end
local function remoteFileOperation(fileId, op, ...)
local fh = fileHandles[fileId]
if fh then
return fh[op](...)
end
end
local function sambaConnection(socket)
while true do
local msg = socket:read()
if not msg then
break
end
local fn = fs[msg.fn]
if msg.fn == 'open' then
fn = remoteOpen
elseif msg.fn == 'fileOp' then
fn = remoteFileOperation
end
local ret
local s, m = pcall(function()
ret = fn(table.unpack(msg.args))
end)
if not s and m then
_G.printError('samba: ' .. m)
end
socket:write({ response = ret })
end
print('samba: Connection closed')
end
local function sanitizeLabel(computer)
return (computer.id.."_"..computer.label:gsub("[%c%.\"'/%*]", "")):sub(1, 40)
end
Event.addRoutine(function()
print('samba: listening on port 139')
while true do
local socket = Socket.server(139)
Event.addRoutine(function()
print('samba: connection from ' .. socket.dhost)
local s, m = pcall(sambaConnection, socket)
print('samba: closing connection to ' .. socket.dhost)
socket:close()
if not s and m then
print('Samba error')
_G.printError(m)
end
end)
end
end)
Event.on('network_attach', function(_, computer)
fs.mount(fs.combine('network', sanitizeLabel(computer)), 'netfs', computer.id)
end)
Event.on('network_detach', function(_, computer)
print('samba: detaching ' .. sanitizeLabel(computer))
fs.unmount(fs.combine('network', sanitizeLabel(computer)))
end)