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cleanup RPC library, make it possible to detect the client hostname when running RPC requests

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This commit is contained in:
Izaya 2023-11-12 23:31:09 +10:00
parent 0aa574ea7a
commit 5f56c74e6f
1 changed files with 16 additions and 8 deletions
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24
lib/rpc.lua
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@ -9,6 +9,8 @@ local function setacl(self, fname, host)
self[fname] = self[fname] or {}
self[fname][host] = true
end
-- function rpc.allow(fn, host) -- string string -- -- Enable the allow list for function *fname* and add *host* to it.
-- function rpc.deny(fn, host) -- string string -- -- Enable the deny list for function *fname* and add *host* to it.
rpc.allow = setmetatable({},{__call=setacl})
rpc.deny = setmetatable({},{__call=setacl})
@ -23,15 +25,15 @@ local function isPermitted(host,fn)
end
local function rpcexec(_, from, port, data)
if port ~= rpc.port then return false end
os.spawn(function()
if port == rpc.port then
local rpcrq = serial.unserialize(data) or {}
if rpcf[rpcrq[1]] and isPermitted(from,rpcrq[1]) then
minitel.send(from,port,serial.serialize({rpcrq[2],pcall(rpcf[rpcrq[1]],table.unpack(rpcrq,3))}))
elseif type(rpcrq[2]) == "string" then
minitel.send(from,port,serial.serialize({rpcrq[2],false,"function unavailable"}))
end
end
local rpcrq = serial.unserialize(data) or {}
if rpcf[rpcrq[1]] and isPermitted(from,rpcrq[1]) then
os.setenv("RPC_CLIENT",from)
minitel.send(from,port,serial.serialize({rpcrq[2],pcall(rpcf[rpcrq[1]],table.unpack(rpcrq,3))}))
elseif type(rpcrq[2]) == "string" then
minitel.send(from,port,serial.serialize({rpcrq[2],false,"function unavailable"}))
end
end,"rpc worker for "..tostring(from))
end
function rpcf.list()
@ -94,4 +96,10 @@ function rpc.register(name,fn) -- string function -- -- Registers a function to
rpcf[name] = fn
end
function rpc.unregister(name) -- string -- -- Removes a function from the RPC function registry, clearing any ACL rules.
rpcf[name] = nil
rpc.allow[name] = nil
rpc.deny[name] = nil
end
return rpc