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This commit is contained in:
Connor O'Connor
2025-10-05 19:50:29 -04:00
parent f447c039c7
commit 01f216f31e
16 changed files with 2824 additions and 2596 deletions
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2
.gitignore vendored
View File

@@ -1,3 +1 @@
.*
!.gitignore
build/

369
lualib/ltn12.lua
View File

@@ -27,43 +27,50 @@ _VERSION = "LTN12 1.0.1"
-----------------------------------------------------------------------------
-- returns a high level filter that cycles a low-level filter
function filter.cycle(low, ctx, extra)
base.assert(low)
return function(chunk)
local ret
ret, ctx = low(ctx, chunk, extra)
return ret
end
base.assert(low)
return function(chunk)
local ret
ret, ctx = low(ctx, chunk, extra)
return ret
end
end
-- chains a bunch of filters together
-- (thanks to Wim Couwenberg)
function filter.chain(...)
local n = #arg
local top, index = 1, 1
local retry = ""
return function(chunk)
retry = chunk and retry
while true do
if index == top then
chunk = arg[index](chunk)
if chunk == "" or top == n then return chunk
elseif chunk then index = index + 1
else
top = top+1
index = top
end
else
chunk = arg[index](chunk or "")
if chunk == "" then
index = index - 1
chunk = retry
elseif chunk then
if index == n then return chunk
else index = index + 1 end
else base.error("filter returned inappropriate nil") end
end
local n = #arg
local top, index = 1, 1
local retry = ""
return function(chunk)
retry = chunk and retry
while true do
if index == top then
chunk = arg[index](chunk)
if chunk == "" or top == n then
return chunk
elseif chunk then
index = index + 1
else
top = top + 1
index = top
end
else
chunk = arg[index](chunk or "")
if chunk == "" then
index = index - 1
chunk = retry
elseif chunk then
if index == n then
return chunk
else
index = index + 1
end
else
base.error("filter returned inappropriate nil")
end
end
end
end
end
-----------------------------------------------------------------------------
@@ -71,130 +78,143 @@ end
-----------------------------------------------------------------------------
-- create an empty source
local function empty()
return nil
return nil
end
function source.empty()
return empty
return empty
end
-- returns a source that just outputs an error
function source.error(err)
return function()
return nil, err
end
return function()
return nil, err
end
end
-- creates a file source
function source.file(handle, io_err)
if handle then
return function()
local chunk = handle:read(BLOCKSIZE)
if not chunk then handle:close() end
return chunk
end
else return source.error(io_err or "unable to open file") end
if handle then
return function()
local chunk = handle:read(BLOCKSIZE)
if not chunk then handle:close() end
return chunk
end
else
return source.error(io_err or "unable to open file")
end
end
-- turns a fancy source into a simple source
function source.simplify(src)
base.assert(src)
return function()
local chunk, err_or_new = src()
src = err_or_new or src
if not chunk then return nil, err_or_new
else return chunk end
base.assert(src)
return function()
local chunk, err_or_new = src()
src = err_or_new or src
if not chunk then
return nil, err_or_new
else
return chunk
end
end
end
-- creates string source
function source.string(s)
if s then
local i = 1
return function()
local chunk = string.sub(s, i, i+BLOCKSIZE-1)
i = i + BLOCKSIZE
if chunk ~= "" then return chunk
else return nil end
end
else return source.empty() end
if s then
local i = 1
return function()
local chunk = string.sub(s, i, i + BLOCKSIZE - 1)
i = i + BLOCKSIZE
if chunk ~= "" then
return chunk
else
return nil
end
end
else
return source.empty()
end
end
-- creates rewindable source
function source.rewind(src)
base.assert(src)
local t = {}
return function(chunk)
if not chunk then
chunk = table.remove(t)
if not chunk then return src()
else return chunk end
else
table.insert(t, chunk)
end
base.assert(src)
local t = {}
return function(chunk)
if not chunk then
chunk = table.remove(t)
if not chunk then
return src()
else
return chunk
end
else
table.insert(t, chunk)
end
end
end
function source.chain(src, f)
base.assert(src and f)
local last_in, last_out = "", ""
local state = "feeding"
local err
return function()
if not last_out then
base.error('source is empty!', 2)
end
while true do
if state == "feeding" then
last_in, err = src()
if err then return nil, err end
last_out = f(last_in)
if not last_out then
if last_in then
base.error('filter returned inappropriate nil')
else
return nil
end
elseif last_out ~= "" then
state = "eating"
if last_in then last_in = "" end
return last_out
end
else
last_out = f(last_in)
if last_out == "" then
if last_in == "" then
state = "feeding"
else
base.error('filter returned ""')
end
elseif not last_out then
if last_in then
base.error('filter returned inappropriate nil')
else
return nil
end
else
return last_out
end
end
end
base.assert(src and f)
local last_in, last_out = "", ""
local state = "feeding"
local err
return function()
if not last_out then
base.error('source is empty!', 2)
end
while true do
if state == "feeding" then
last_in, err = src()
if err then return nil, err end
last_out = f(last_in)
if not last_out then
if last_in then
base.error('filter returned inappropriate nil')
else
return nil
end
elseif last_out ~= "" then
state = "eating"
if last_in then last_in = "" end
return last_out
end
else
last_out = f(last_in)
if last_out == "" then
if last_in == "" then
state = "feeding"
else
base.error('filter returned ""')
end
elseif not last_out then
if last_in then
base.error('filter returned inappropriate nil')
else
return nil
end
else
return last_out
end
end
end
end
end
-- creates a source that produces contents of several sources, one after the
-- other, as if they were concatenated
-- (thanks to Wim Couwenberg)
function source.cat(...)
local src = table.remove(arg, 1)
return function()
while src do
local chunk, err = src()
if chunk then return chunk end
if err then return nil, err end
src = table.remove(arg, 1)
end
local src = table.remove(arg, 1)
return function()
while src do
local chunk, err = src()
if chunk then return chunk end
if err then return nil, err end
src = table.remove(arg, 1)
end
end
end
-----------------------------------------------------------------------------
@@ -202,68 +222,74 @@ end
-----------------------------------------------------------------------------
-- creates a sink that stores into a table
function sink.table(t)
t = t or {}
local f = function(chunk, err)
if chunk then table.insert(t, chunk) end
return 1
end
return f, t
t = t or {}
local f = function(chunk, err)
if chunk then table.insert(t, chunk) end
return 1
end
return f, t
end
-- turns a fancy sink into a simple sink
function sink.simplify(snk)
base.assert(snk)
return function(chunk, err)
local ret, err_or_new = snk(chunk, err)
if not ret then return nil, err_or_new end
snk = err_or_new or snk
return 1
end
base.assert(snk)
return function(chunk, err)
local ret, err_or_new = snk(chunk, err)
if not ret then return nil, err_or_new end
snk = err_or_new or snk
return 1
end
end
-- creates a file sink
function sink.file(handle, io_err)
if handle then
return function(chunk, err)
if not chunk then
handle:close()
return 1
else return handle:write(chunk) end
end
else return sink.error(io_err or "unable to open file") end
if handle then
return function(chunk, err)
if not chunk then
handle:close()
return 1
else
return handle:write(chunk)
end
end
else
return sink.error(io_err or "unable to open file")
end
end
-- creates a sink that discards data
local function null()
return 1
return 1
end
function sink.null()
return null
return null
end
-- creates a sink that just returns an error
function sink.error(err)
return function()
return nil, err
end
return function()
return nil, err
end
end
-- chains a sink with a filter
function sink.chain(f, snk)
base.assert(f and snk)
return function(chunk, err)
if chunk ~= "" then
local filtered = f(chunk)
local done = chunk and ""
while true do
local ret, snkerr = snk(filtered, err)
if not ret then return nil, snkerr end
if filtered == done then return 1 end
filtered = f(done)
end
else return 1 end
base.assert(f and snk)
return function(chunk, err)
if chunk ~= "" then
local filtered = f(chunk)
local done = chunk and ""
while true do
local ret, snkerr = snk(filtered, err)
if not ret then return nil, snkerr end
if filtered == done then return 1 end
filtered = f(done)
end
else
return 1
end
end
end
-----------------------------------------------------------------------------
@@ -271,22 +297,27 @@ end
-----------------------------------------------------------------------------
-- pumps one chunk from the source to the sink
function pump.step(src, snk)
local chunk, src_err = src()
local ret, snk_err = snk(chunk, src_err)
if chunk and ret then return 1
else return nil, src_err or snk_err end
local chunk, src_err = src()
local ret, snk_err = snk(chunk, src_err)
if chunk and ret then
return 1
else
return nil, src_err or snk_err
end
end
-- pumps all data from a source to a sink, using a step function
function pump.all(src, snk, step)
base.assert(src and snk)
step = step or pump.step
while true do
local ret, err = step(src, snk)
if not ret then
if err then return nil, err
else return 1 end
end
base.assert(src and snk)
step = step or pump.step
while true do
local ret, err = step(src, snk)
if not ret then
if err then
return nil, err
else
return 1
end
end
end
end

51
lualib/mime.lua
View File

@@ -22,53 +22,60 @@ wrapt = {}
-- creates a function that chooses a filter by name from a given table
local function choose(table)
return function(name, opt1, opt2)
if base.type(name) ~= "string" then
name, opt1, opt2 = "default", name, opt1
end
local f = table[name or "nil"]
if not f then
base.error("unknown key (" .. base.tostring(name) .. ")", 3)
else return f(opt1, opt2) end
return function(name, opt1, opt2)
if base.type(name) ~= "string" then
name, opt1, opt2 = "default", name, opt1
end
local f = table[name or "nil"]
if not f then
base.error("unknown key (" .. base.tostring(name) .. ")", 3)
else
return f(opt1, opt2)
end
end
end
-- define the encoding filters
encodet['base64'] = function()
return ltn12.filter.cycle(b64, "")
return ltn12.filter.cycle(b64, "")
end
encodet['quoted-printable'] = function(mode)
return ltn12.filter.cycle(qp, "",
(mode == "binary") and "=0D=0A" or "\r\n")
return ltn12.filter.cycle(qp, "",
(mode == "binary") and "=0D=0A" or "\r\n")
end
-- define the decoding filters
decodet['base64'] = function()
return ltn12.filter.cycle(unb64, "")
return ltn12.filter.cycle(unb64, "")
end
decodet['quoted-printable'] = function()
return ltn12.filter.cycle(unqp, "")
return ltn12.filter.cycle(unqp, "")
end
local function format(chunk)
if chunk then
if chunk == "" then return "''"
else return string.len(chunk) end
else return "nil" end
if chunk then
if chunk == "" then
return "''"
else
return string.len(chunk)
end
else
return "nil"
end
end
-- define the line-wrap filters
wrapt['text'] = function(length)
length = length or 76
return ltn12.filter.cycle(wrp, length, length)
length = length or 76
return ltn12.filter.cycle(wrp, length, length)
end
wrapt['base64'] = wrapt['text']
wrapt['default'] = wrapt['text']
wrapt['quoted-printable'] = function()
return ltn12.filter.cycle(qpwrp, 76, 76)
return ltn12.filter.cycle(qpwrp, 76, 76)
end
-- function that choose the encoding, decoding or wrap algorithm
@@ -78,10 +85,10 @@ wrap = choose(wrapt)
-- define the end-of-line normalization filter
function normalize(marker)
return ltn12.filter.cycle(eol, 0, marker)
return ltn12.filter.cycle(eol, 0, marker)
end
-- high level stuffing filter
function stuff()
return ltn12.filter.cycle(dot, 2)
return ltn12.filter.cycle(dot, 2)
end

156
lualib/socket.lua
View File

@@ -17,39 +17,42 @@ module("socket")
-- Exported auxiliar functions
-----------------------------------------------------------------------------
function connect(address, port, laddress, lport)
local sock, err = socket.tcp()
if not sock then return nil, err end
if laddress then
local res, err = sock:bind(laddress, lport, -1)
if not res then return nil, err end
end
local res, err = sock:connect(address, port)
local sock, err = socket.tcp()
if not sock then return nil, err end
if laddress then
local res, err = sock:bind(laddress, lport, -1)
if not res then return nil, err end
return sock
end
local res, err = sock:connect(address, port)
if not res then return nil, err end
return sock
end
function bind(host, port, backlog)
local sock, err = socket.tcp()
if not sock then return nil, err end
sock:setoption("reuseaddr", true)
local res, err = sock:bind(host, port)
if not res then return nil, err end
res, err = sock:listen(backlog)
if not res then return nil, err end
return sock
local sock, err = socket.tcp()
if not sock then return nil, err end
sock:setoption("reuseaddr", true)
local res, err = sock:bind(host, port)
if not res then return nil, err end
res, err = sock:listen(backlog)
if not res then return nil, err end
return sock
end
try = newtry()
function choose(table)
return function(name, opt1, opt2)
if base.type(name) ~= "string" then
name, opt1, opt2 = "default", name, opt1
end
local f = table[name or "nil"]
if not f then base.error("unknown key (".. base.tostring(name) ..")", 3)
else return f(opt1, opt2) end
return function(name, opt1, opt2)
if base.type(name) ~= "string" then
name, opt1, opt2 = "default", name, opt1
end
local f = table[name or "nil"]
if not f then
base.error("unknown key (" .. base.tostring(name) .. ")", 3)
else
return f(opt1, opt2)
end
end
end
-----------------------------------------------------------------------------
@@ -62,29 +65,34 @@ sinkt = {}
BLOCKSIZE = 2048
sinkt["close-when-done"] = function(sock)
return base.setmetatable({
getfd = function() return sock:getfd() end,
dirty = function() return sock:dirty() end
}, {
__call = function(self, chunk, err)
if not chunk then
sock:close()
return 1
else return sock:send(chunk) end
end
})
return base.setmetatable({
getfd = function() return sock:getfd() end,
dirty = function() return sock:dirty() end
}, {
__call = function(self, chunk, err)
if not chunk then
sock:close()
return 1
else
return sock:send(chunk)
end
end
})
end
sinkt["keep-open"] = function(sock)
return base.setmetatable({
getfd = function() return sock:getfd() end,
dirty = function() return sock:dirty() end
}, {
__call = function(self, chunk, err)
if chunk then return sock:send(chunk)
else return 1 end
end
})
return base.setmetatable({
getfd = function() return sock:getfd() end,
dirty = function() return sock:dirty() end
}, {
__call = function(self, chunk, err)
if chunk then
return sock:send(chunk)
else
return 1
end
end
})
end
sinkt["default"] = sinkt["keep-open"]
@@ -92,42 +100,44 @@ sinkt["default"] = sinkt["keep-open"]
sink = choose(sinkt)
sourcet["by-length"] = function(sock, length)
return base.setmetatable({
getfd = function() return sock:getfd() end,
dirty = function() return sock:dirty() end
}, {
__call = function()
if length <= 0 then return nil end
local size = math.min(socket.BLOCKSIZE, length)
local chunk, err = sock:receive(size)
if err then return nil, err end
length = length - string.len(chunk)
return chunk
end
})
return base.setmetatable({
getfd = function() return sock:getfd() end,
dirty = function() return sock:dirty() end
}, {
__call = function()
if length <= 0 then return nil end
local size = math.min(socket.BLOCKSIZE, length)
local chunk, err = sock:receive(size)
if err then return nil, err end
length = length - string.len(chunk)
return chunk
end
})
end
sourcet["until-closed"] = function(sock)
local done
return base.setmetatable({
getfd = function() return sock:getfd() end,
dirty = function() return sock:dirty() end
}, {
__call = function()
if done then return nil end
local chunk, err, partial = sock:receive(socket.BLOCKSIZE)
if not err then return chunk
elseif err == "closed" then
sock:close()
done = 1
return partial
else return nil, err end
end
})
local done
return base.setmetatable({
getfd = function() return sock:getfd() end,
dirty = function() return sock:dirty() end
}, {
__call = function()
if done then return nil end
local chunk, err, partial = sock:receive(socket.BLOCKSIZE)
if not err then
return chunk
elseif err == "closed" then
sock:close()
done = 1
return partial
else
return nil, err
end
end
})
end
sourcet["default"] = sourcet["until-closed"]
source = choose(sourcet)

353
lualib/socket/ftp.lua
View File

@@ -36,246 +36,253 @@ PASSWORD = "anonymous@anonymous.org"
local metat = { __index = {} }
function open(server, port, create)
local tp = socket.try(tp.connect(server, port or PORT, TIMEOUT, create))
local f = base.setmetatable({ tp = tp }, metat)
-- make sure everything gets closed in an exception
f.try = socket.newtry(function() f:close() end)
return f
local tp = socket.try(tp.connect(server, port or PORT, TIMEOUT, create))
local f = base.setmetatable({ tp = tp }, metat)
-- make sure everything gets closed in an exception
f.try = socket.newtry(function() f:close() end)
return f
end
function metat.__index:portconnect()
self.try(self.server:settimeout(TIMEOUT))
self.data = self.try(self.server:accept())
self.try(self.data:settimeout(TIMEOUT))
self.try(self.server:settimeout(TIMEOUT))
self.data = self.try(self.server:accept())
self.try(self.data:settimeout(TIMEOUT))
end
function metat.__index:pasvconnect()
self.data = self.try(socket.tcp())
self.try(self.data:settimeout(TIMEOUT))
self.try(self.data:connect(self.pasvt.ip, self.pasvt.port))
self.data = self.try(socket.tcp())
self.try(self.data:settimeout(TIMEOUT))
self.try(self.data:connect(self.pasvt.ip, self.pasvt.port))
end
function metat.__index:login(user, password)
self.try(self.tp:command("user", user or USER))
local code, reply = self.try(self.tp:check{"2..", 331})
if code == 331 then
self.try(self.tp:command("pass", password or PASSWORD))
self.try(self.tp:check("2.."))
end
return 1
self.try(self.tp:command("user", user or USER))
local code, reply = self.try(self.tp:check { "2..", 331 })
if code == 331 then
self.try(self.tp:command("pass", password or PASSWORD))
self.try(self.tp:check("2.."))
end
return 1
end
function metat.__index:pasv()
self.try(self.tp:command("pasv"))
local code, reply = self.try(self.tp:check("2.."))
local pattern = "(%d+)%D(%d+)%D(%d+)%D(%d+)%D(%d+)%D(%d+)"
local a, b, c, d, p1, p2 = socket.skip(2, string.find(reply, pattern))
self.try(a and b and c and d and p1 and p2, reply)
self.pasvt = {
ip = string.format("%d.%d.%d.%d", a, b, c, d),
port = p1*256 + p2
}
if self.server then
self.server:close()
self.server = nil
end
return self.pasvt.ip, self.pasvt.port
self.try(self.tp:command("pasv"))
local code, reply = self.try(self.tp:check("2.."))
local pattern = "(%d+)%D(%d+)%D(%d+)%D(%d+)%D(%d+)%D(%d+)"
local a, b, c, d, p1, p2 = socket.skip(2, string.find(reply, pattern))
self.try(a and b and c and d and p1 and p2, reply)
self.pasvt = {
ip = string.format("%d.%d.%d.%d", a, b, c, d),
port = p1 * 256 + p2
}
if self.server then
self.server:close()
self.server = nil
end
return self.pasvt.ip, self.pasvt.port
end
function metat.__index:port(ip, port)
self.pasvt = nil
if not ip then
ip, port = self.try(self.tp:getcontrol():getsockname())
self.server = self.try(socket.bind(ip, 0))
ip, port = self.try(self.server:getsockname())
self.try(self.server:settimeout(TIMEOUT))
end
local pl = math.mod(port, 256)
local ph = (port - pl)/256
local arg = string.gsub(string.format("%s,%d,%d", ip, ph, pl), "%.", ",")
self.try(self.tp:command("port", arg))
self.try(self.tp:check("2.."))
return 1
self.pasvt = nil
if not ip then
ip, port = self.try(self.tp:getcontrol():getsockname())
self.server = self.try(socket.bind(ip, 0))
ip, port = self.try(self.server:getsockname())
self.try(self.server:settimeout(TIMEOUT))
end
local pl = math.mod(port, 256)
local ph = (port - pl) / 256
local arg = string.gsub(string.format("%s,%d,%d", ip, ph, pl), "%.", ",")
self.try(self.tp:command("port", arg))
self.try(self.tp:check("2.."))
return 1
end
function metat.__index:send(sendt)
self.try(self.pasvt or self.server, "need port or pasv first")
-- if there is a pasvt table, we already sent a PASV command
-- we just get the data connection into self.data
if self.pasvt then self:pasvconnect() end
-- get the transfer argument and command
local argument = sendt.argument or
url.unescape(string.gsub(sendt.path or "", "^[/\\]", ""))
if argument == "" then argument = nil end
local command = sendt.command or "stor"
-- send the transfer command and check the reply
self.try(self.tp:command(command, argument))
local code, reply = self.try(self.tp:check{"2..", "1.."})
-- if there is not a a pasvt table, then there is a server
-- and we already sent a PORT command
if not self.pasvt then self:portconnect() end
-- get the sink, source and step for the transfer
local step = sendt.step or ltn12.pump.step
local readt = {self.tp.c}
local checkstep = function(src, snk)
-- check status in control connection while downloading
local readyt = socket.select(readt, nil, 0)
if readyt[tp] then code = self.try(self.tp:check("2..")) end
return step(src, snk)
end
local sink = socket.sink("close-when-done", self.data)
-- transfer all data and check error
self.try(ltn12.pump.all(sendt.source, sink, checkstep))
if string.find(code, "1..") then self.try(self.tp:check("2..")) end
-- done with data connection
self.data:close()
-- find out how many bytes were sent
local sent = socket.skip(1, self.data:getstats())
self.data = nil
return sent
self.try(self.pasvt or self.server, "need port or pasv first")
-- if there is a pasvt table, we already sent a PASV command
-- we just get the data connection into self.data
if self.pasvt then self:pasvconnect() end
-- get the transfer argument and command
local argument = sendt.argument or
url.unescape(string.gsub(sendt.path or "", "^[/\\]", ""))
if argument == "" then argument = nil end
local command = sendt.command or "stor"
-- send the transfer command and check the reply
self.try(self.tp:command(command, argument))
local code, reply = self.try(self.tp:check { "2..", "1.." })
-- if there is not a a pasvt table, then there is a server
-- and we already sent a PORT command
if not self.pasvt then self:portconnect() end
-- get the sink, source and step for the transfer
local step = sendt.step or ltn12.pump.step
local readt = { self.tp.c }
local checkstep = function(src, snk)
-- check status in control connection while downloading
local readyt = socket.select(readt, nil, 0)
if readyt[tp] then code = self.try(self.tp:check("2..")) end
return step(src, snk)
end
local sink = socket.sink("close-when-done", self.data)
-- transfer all data and check error
self.try(ltn12.pump.all(sendt.source, sink, checkstep))
if string.find(code, "1..") then self.try(self.tp:check("2..")) end
-- done with data connection
self.data:close()
-- find out how many bytes were sent
local sent = socket.skip(1, self.data:getstats())
self.data = nil
return sent
end
function metat.__index:receive(recvt)
self.try(self.pasvt or self.server, "need port or pasv first")
if self.pasvt then self:pasvconnect() end
local argument = recvt.argument or
url.unescape(string.gsub(recvt.path or "", "^[/\\]", ""))
if argument == "" then argument = nil end
local command = recvt.command or "retr"
self.try(self.tp:command(command, argument))
local code = self.try(self.tp:check{"1..", "2.."})
if not self.pasvt then self:portconnect() end
local source = socket.source("until-closed", self.data)
local step = recvt.step or ltn12.pump.step
self.try(ltn12.pump.all(source, recvt.sink, step))
if string.find(code, "1..") then self.try(self.tp:check("2..")) end
self.data:close()
self.data = nil
return 1
self.try(self.pasvt or self.server, "need port or pasv first")
if self.pasvt then self:pasvconnect() end
local argument = recvt.argument or
url.unescape(string.gsub(recvt.path or "", "^[/\\]", ""))
if argument == "" then argument = nil end
local command = recvt.command or "retr"
self.try(self.tp:command(command, argument))
local code = self.try(self.tp:check { "1..", "2.." })
if not self.pasvt then self:portconnect() end
local source = socket.source("until-closed", self.data)
local step = recvt.step or ltn12.pump.step
self.try(ltn12.pump.all(source, recvt.sink, step))
if string.find(code, "1..") then self.try(self.tp:check("2..")) end
self.data:close()
self.data = nil
return 1
end
function metat.__index:cwd(dir)
self.try(self.tp:command("cwd", dir))
self.try(self.tp:check(250))
return 1
self.try(self.tp:command("cwd", dir))
self.try(self.tp:check(250))
return 1
end
function metat.__index:type(type)
self.try(self.tp:command("type", type))
self.try(self.tp:check(200))
return 1
self.try(self.tp:command("type", type))
self.try(self.tp:check(200))
return 1
end
function metat.__index:greet()
local code = self.try(self.tp:check{"1..", "2.."})
if string.find(code, "1..") then self.try(self.tp:check("2..")) end
return 1
local code = self.try(self.tp:check { "1..", "2.." })
if string.find(code, "1..") then self.try(self.tp:check("2..")) end
return 1
end
function metat.__index:quit()
self.try(self.tp:command("quit"))
self.try(self.tp:check("2.."))
return 1
self.try(self.tp:command("quit"))
self.try(self.tp:check("2.."))
return 1
end
function metat.__index:close()
if self.data then self.data:close() end
if self.server then self.server:close() end
return self.tp:close()
if self.data then self.data:close() end
if self.server then self.server:close() end
return self.tp:close()
end
-----------------------------------------------------------------------------
-- High level FTP API
-----------------------------------------------------------------------------
local function override(t)
if t.url then
local u = url.parse(t.url)
for i,v in base.pairs(t) do
u[i] = v
end
return u
else return t end
if t.url then
local u = url.parse(t.url)
for i, v in base.pairs(t) do
u[i] = v
end
return u
else
return t
end
end
local function tput(putt)
putt = override(putt)
socket.try(putt.host, "missing hostname")
local f = open(putt.host, putt.port, putt.create)
f:greet()
f:login(putt.user, putt.password)
if putt.type then f:type(putt.type) end
f:pasv()
local sent = f:send(putt)
f:quit()
f:close()
return sent
putt = override(putt)
socket.try(putt.host, "missing hostname")
local f = open(putt.host, putt.port, putt.create)
f:greet()
f:login(putt.user, putt.password)
if putt.type then f:type(putt.type) end
f:pasv()
local sent = f:send(putt)
f:quit()
f:close()
return sent
end
local default = {
path = "/",
scheme = "ftp"
path = "/",
scheme = "ftp"
}
local function parse(u)
local t = socket.try(url.parse(u, default))
socket.try(t.scheme == "ftp", "wrong scheme '" .. t.scheme .. "'")
socket.try(t.host, "missing hostname")
local pat = "^type=(.)$"
if t.params then
t.type = socket.skip(2, string.find(t.params, pat))
socket.try(t.type == "a" or t.type == "i",
"invalid type '" .. t.type .. "'")
end
return t
local t = socket.try(url.parse(u, default))
socket.try(t.scheme == "ftp", "wrong scheme '" .. t.scheme .. "'")
socket.try(t.host, "missing hostname")
local pat = "^type=(.)$"
if t.params then
t.type = socket.skip(2, string.find(t.params, pat))
socket.try(t.type == "a" or t.type == "i",
"invalid type '" .. t.type .. "'")
end
return t
end
local function sput(u, body)
local putt = parse(u)
putt.source = ltn12.source.string(body)
return tput(putt)
local putt = parse(u)
putt.source = ltn12.source.string(body)
return tput(putt)
end
put = socket.protect(function(putt, body)
if base.type(putt) == "string" then return sput(putt, body)
else return tput(putt) end
if base.type(putt) == "string" then
return sput(putt, body)
else
return tput(putt)
end
end)
local function tget(gett)
gett = override(gett)
socket.try(gett.host, "missing hostname")
local f = open(gett.host, gett.port, gett.create)
f:greet()
f:login(gett.user, gett.password)
if gett.type then f:type(gett.type) end
f:pasv()
f:receive(gett)
f:quit()
return f:close()
gett = override(gett)
socket.try(gett.host, "missing hostname")
local f = open(gett.host, gett.port, gett.create)
f:greet()
f:login(gett.user, gett.password)
if gett.type then f:type(gett.type) end
f:pasv()
f:receive(gett)
f:quit()
return f:close()
end
local function sget(u)
local gett = parse(u)
local t = {}
gett.sink = ltn12.sink.table(t)
tget(gett)
return table.concat(t)
local gett = parse(u)
local t = {}
gett.sink = ltn12.sink.table(t)
tget(gett)
return table.concat(t)
end
command = socket.protect(function(cmdt)
cmdt = override(cmdt)
socket.try(cmdt.host, "missing hostname")
socket.try(cmdt.command, "missing command")
local f = open(cmdt.host, cmdt.port, cmdt.create)
f:greet()
f:login(cmdt.user, cmdt.password)
f.try(f.tp:command(cmdt.command, cmdt.argument))
if cmdt.check then f.try(f.tp:check(cmdt.check)) end
f:quit()
return f:close()
cmdt = override(cmdt)
socket.try(cmdt.host, "missing hostname")
socket.try(cmdt.command, "missing command")
local f = open(cmdt.host, cmdt.port, cmdt.create)
f:greet()
f:login(cmdt.user, cmdt.password)
f.try(f.tp:command(cmdt.command, cmdt.argument))
if cmdt.check then f.try(f.tp:check(cmdt.check)) end
f:quit()
return f:close()
end)
get = socket.protect(function(gett)
if base.type(gett) == "string" then return sget(gett)
else return tget(gett) end
if base.type(gett) == "string" then
return sget(gett)
else
return tget(gett)
end
end)

467
lualib/socket/http.lua
View File

@@ -31,73 +31,76 @@ USERAGENT = socket._VERSION
-- Reads MIME headers from a connection, unfolding where needed
-----------------------------------------------------------------------------
local function receiveheaders(sock, headers)
local line, name, value, err
headers = headers or {}
-- get first line
local line, name, value, err
headers = headers or {}
-- get first line
line, err = sock:receive()
if err then return nil, err end
-- headers go until a blank line is found
while line ~= "" do
-- get field-name and value
name, value = socket.skip(2, string.find(line, "^(.-):%s*(.*)"))
if not (name and value) then return nil, "malformed reponse headers" end
name = string.lower(name)
-- get next line (value might be folded)
line, err = sock:receive()
if err then return nil, err end
-- headers go until a blank line is found
while line ~= "" do
-- get field-name and value
name, value = socket.skip(2, string.find(line, "^(.-):%s*(.*)"))
if not (name and value) then return nil, "malformed reponse headers" end
name = string.lower(name)
-- get next line (value might be folded)
line, err = sock:receive()
if err then return nil, err end
-- unfold any folded values
while string.find(line, "^%s") do
value = value .. line
line = sock:receive()
if err then return nil, err end
end
-- save pair in table
if headers[name] then headers[name] = headers[name] .. ", " .. value
else headers[name] = value end
-- unfold any folded values
while string.find(line, "^%s") do
value = value .. line
line = sock:receive()
if err then return nil, err end
end
return headers
-- save pair in table
if headers[name] then
headers[name] = headers[name] .. ", " .. value
else
headers[name] = value
end
end
return headers
end
-----------------------------------------------------------------------------
-- Extra sources and sinks
-----------------------------------------------------------------------------
socket.sourcet["http-chunked"] = function(sock, headers)
return base.setmetatable({
getfd = function() return sock:getfd() end,
dirty = function() return sock:dirty() end
}, {
__call = function()
-- get chunk size, skip extention
local line, err = sock:receive()
if err then return nil, err end
local size = base.tonumber(string.gsub(line, ";.*", ""), 16)
if not size then return nil, "invalid chunk size" end
-- was it the last chunk?
if size > 0 then
-- if not, get chunk and skip terminating CRLF
local chunk, err, part = sock:receive(size)
if chunk then sock:receive() end
return chunk, err
else
-- if it was, read trailers into headers table
headers, err = receiveheaders(sock, headers)
if not headers then return nil, err end
end
end
})
return base.setmetatable({
getfd = function() return sock:getfd() end,
dirty = function() return sock:dirty() end
}, {
__call = function()
-- get chunk size, skip extention
local line, err = sock:receive()
if err then return nil, err end
local size = base.tonumber(string.gsub(line, ";.*", ""), 16)
if not size then return nil, "invalid chunk size" end
-- was it the last chunk?
if size > 0 then
-- if not, get chunk and skip terminating CRLF
local chunk, err, part = sock:receive(size)
if chunk then sock:receive() end
return chunk, err
else
-- if it was, read trailers into headers table
headers, err = receiveheaders(sock, headers)
if not headers then return nil, err end
end
end
})
end
socket.sinkt["http-chunked"] = function(sock)
return base.setmetatable({
getfd = function() return sock:getfd() end,
dirty = function() return sock:dirty() end
}, {
__call = function(self, chunk, err)
if not chunk then return sock:send("0\r\n\r\n") end
local size = string.format("%X\r\n", string.len(chunk))
return sock:send(size .. chunk .. "\r\n")
end
})
return base.setmetatable({
getfd = function() return sock:getfd() end,
dirty = function() return sock:dirty() end
}, {
__call = function(self, chunk, err)
if not chunk then return sock:send("0\r\n\r\n") end
local size = string.format("%X\r\n", string.len(chunk))
return sock:send(size .. chunk .. "\r\n")
end
})
end
-----------------------------------------------------------------------------
@@ -106,245 +109,251 @@ end
local metat = { __index = {} }
function open(host, port, create)
-- create socket with user connect function, or with default
local c = socket.try((create or socket.tcp)())
local h = base.setmetatable({ c = c }, metat)
-- create finalized try
h.try = socket.newtry(function() h:close() end)
-- set timeout before connecting
h.try(c:settimeout(TIMEOUT))
h.try(c:connect(host, port or PORT))
-- here everything worked
return h
-- create socket with user connect function, or with default
local c = socket.try((create or socket.tcp)())
local h = base.setmetatable({ c = c }, metat)
-- create finalized try
h.try = socket.newtry(function() h:close() end)
-- set timeout before connecting
h.try(c:settimeout(TIMEOUT))
h.try(c:connect(host, port or PORT))
-- here everything worked
return h
end
function metat.__index:sendrequestline(method, uri)
local reqline = string.format("%s %s HTTP/1.1\r\n", method or "GET", uri)
return self.try(self.c:send(reqline))
local reqline = string.format("%s %s HTTP/1.1\r\n", method or "GET", uri)
return self.try(self.c:send(reqline))
end
function metat.__index:sendheaders(headers)
local h = "\r\n"
for i, v in base.pairs(headers) do
h = i .. ": " .. v .. "\r\n" .. h
end
self.try(self.c:send(h))
return 1
local h = "\r\n"
for i, v in base.pairs(headers) do
h = i .. ": " .. v .. "\r\n" .. h
end
self.try(self.c:send(h))
return 1
end
function metat.__index:sendbody(headers, source, step)
source = source or ltn12.source.empty()
step = step or ltn12.pump.step
-- if we don't know the size in advance, send chunked and hope for the best
local mode = "http-chunked"
if headers["content-length"] then mode = "keep-open" end
return self.try(ltn12.pump.all(source, socket.sink(mode, self.c), step))
source = source or ltn12.source.empty()
step = step or ltn12.pump.step
-- if we don't know the size in advance, send chunked and hope for the best
local mode = "http-chunked"
if headers["content-length"] then mode = "keep-open" end
return self.try(ltn12.pump.all(source, socket.sink(mode, self.c), step))
end
function metat.__index:receivestatusline()
local status = self.try(self.c:receive(5))
-- identify HTTP/0.9 responses, which do not contain a status line
-- this is just a heuristic, but is what the RFC recommends
if status ~= "HTTP/" then return nil, status end
-- otherwise proceed reading a status line
status = self.try(self.c:receive("*l", status))
local code = socket.skip(2, string.find(status, "HTTP/%d*%.%d* (%d%d%d)"))
return self.try(base.tonumber(code), status)
local status = self.try(self.c:receive(5))
-- identify HTTP/0.9 responses, which do not contain a status line
-- this is just a heuristic, but is what the RFC recommends
if status ~= "HTTP/" then return nil, status end
-- otherwise proceed reading a status line
status = self.try(self.c:receive("*l", status))
local code = socket.skip(2, string.find(status, "HTTP/%d*%.%d* (%d%d%d)"))
return self.try(base.tonumber(code), status)
end
function metat.__index:receiveheaders()
return self.try(receiveheaders(self.c))
return self.try(receiveheaders(self.c))
end
function metat.__index:receivebody(headers, sink, step)
sink = sink or ltn12.sink.null()
step = step or ltn12.pump.step
local length = base.tonumber(headers["content-length"])
local t = headers["transfer-encoding"] -- shortcut
local mode = "default" -- connection close
if t and t ~= "identity" then mode = "http-chunked"
elseif base.tonumber(headers["content-length"]) then mode = "by-length" end
return self.try(ltn12.pump.all(socket.source(mode, self.c, length),
sink, step))
sink = sink or ltn12.sink.null()
step = step or ltn12.pump.step
local length = base.tonumber(headers["content-length"])
local t = headers["transfer-encoding"] -- shortcut
local mode = "default" -- connection close
if t and t ~= "identity" then
mode = "http-chunked"
elseif base.tonumber(headers["content-length"]) then
mode = "by-length"
end
return self.try(ltn12.pump.all(socket.source(mode, self.c, length),
sink, step))
end
function metat.__index:receive09body(status, sink, step)
local source = ltn12.source.rewind(socket.source("until-closed", self.c))
source(status)
return self.try(ltn12.pump.all(source, sink, step))
local source = ltn12.source.rewind(socket.source("until-closed", self.c))
source(status)
return self.try(ltn12.pump.all(source, sink, step))
end
function metat.__index:close()
return self.c:close()
return self.c:close()
end
-----------------------------------------------------------------------------
-- High level HTTP API
-----------------------------------------------------------------------------
local function adjusturi(reqt)
local u = reqt
-- if there is a proxy, we need the full url. otherwise, just a part.
if not reqt.proxy and not PROXY then
u = {
path = socket.try(reqt.path, "invalid path 'nil'"),
params = reqt.params,
query = reqt.query,
fragment = reqt.fragment
}
end
return url.build(u)
local u = reqt
-- if there is a proxy, we need the full url. otherwise, just a part.
if not reqt.proxy and not PROXY then
u = {
path = socket.try(reqt.path, "invalid path 'nil'"),
params = reqt.params,
query = reqt.query,
fragment = reqt.fragment
}
end
return url.build(u)
end
local function adjustproxy(reqt)
local proxy = reqt.proxy or PROXY
if proxy then
proxy = url.parse(proxy)
return proxy.host, proxy.port or 3128
else
return reqt.host, reqt.port
end
local proxy = reqt.proxy or PROXY
if proxy then
proxy = url.parse(proxy)
return proxy.host, proxy.port or 3128
else
return reqt.host, reqt.port
end
end
local function adjustheaders(reqt)
-- default headers
local lower = {
["user-agent"] = USERAGENT,
["host"] = reqt.host,
["connection"] = "close, TE",
["te"] = "trailers"
}
-- if we have authentication information, pass it along
if reqt.user and reqt.password then
lower["authorization"] =
"Basic " .. (mime.b64(reqt.user .. ":" .. reqt.password))
end
-- override with user headers
for i,v in base.pairs(reqt.headers or lower) do
lower[string.lower(i)] = v
end
return lower
-- default headers
local lower = {
["user-agent"] = USERAGENT,
["host"] = reqt.host,
["connection"] = "close, TE",
["te"] = "trailers"
}
-- if we have authentication information, pass it along
if reqt.user and reqt.password then
lower["authorization"] =
"Basic " .. (mime.b64(reqt.user .. ":" .. reqt.password))
end
-- override with user headers
for i, v in base.pairs(reqt.headers or lower) do
lower[string.lower(i)] = v
end
return lower
end
-- default url parts
local default = {
host = "",
port = PORT,
path ="/",
scheme = "http"
host = "",
port = PORT,
path = "/",
scheme = "http"
}
local function adjustrequest(reqt)
-- parse url if provided
local nreqt = reqt.url and url.parse(reqt.url, default) or {}
-- explicit components override url
for i,v in base.pairs(reqt) do nreqt[i] = v end
if nreqt.port == "" then nreqt.port = 80 end
socket.try(nreqt.host and nreqt.host ~= "",
"invalid host '" .. base.tostring(nreqt.host) .. "'")
-- compute uri if user hasn't overriden
nreqt.uri = reqt.uri or adjusturi(nreqt)
-- ajust host and port if there is a proxy
nreqt.host, nreqt.port = adjustproxy(nreqt)
-- adjust headers in request
nreqt.headers = adjustheaders(nreqt)
return nreqt
-- parse url if provided
local nreqt = reqt.url and url.parse(reqt.url, default) or {}
-- explicit components override url
for i, v in base.pairs(reqt) do nreqt[i] = v end
if nreqt.port == "" then nreqt.port = 80 end
socket.try(nreqt.host and nreqt.host ~= "",
"invalid host '" .. base.tostring(nreqt.host) .. "'")
-- compute uri if user hasn't overriden
nreqt.uri = reqt.uri or adjusturi(nreqt)
-- ajust host and port if there is a proxy
nreqt.host, nreqt.port = adjustproxy(nreqt)
-- adjust headers in request
nreqt.headers = adjustheaders(nreqt)
return nreqt
end
local function shouldredirect(reqt, code, headers)
return headers.location and
string.gsub(headers.location, "%s", "") ~= "" and
(reqt.redirect ~= false) and
(code == 301 or code == 302) and
(not reqt.method or reqt.method == "GET" or reqt.method == "HEAD")
and (not reqt.nredirects or reqt.nredirects < 5)
return headers.location and
string.gsub(headers.location, "%s", "") ~= "" and
(reqt.redirect ~= false) and
(code == 301 or code == 302) and
(not reqt.method or reqt.method == "GET" or reqt.method == "HEAD")
and (not reqt.nredirects or reqt.nredirects < 5)
end
local function shouldreceivebody(reqt, code)
if reqt.method == "HEAD" then return nil end
if code == 204 or code == 304 then return nil end
if code >= 100 and code < 200 then return nil end
return 1
if reqt.method == "HEAD" then return nil end
if code == 204 or code == 304 then return nil end
if code >= 100 and code < 200 then return nil end
return 1
end
-- forward declarations
local trequest, tredirect
function tredirect(reqt, location)
local result, code, headers, status = trequest {
-- the RFC says the redirect URL has to be absolute, but some
-- servers do not respect that
url = url.absolute(reqt.url, location),
source = reqt.source,
sink = reqt.sink,
headers = reqt.headers,
proxy = reqt.proxy,
nredirects = (reqt.nredirects or 0) + 1,
create = reqt.create
}
-- pass location header back as a hint we redirected
headers = headers or {}
headers.location = headers.location or location
return result, code, headers, status
local result, code, headers, status = trequest {
-- the RFC says the redirect URL has to be absolute, but some
-- servers do not respect that
url = url.absolute(reqt.url, location),
source = reqt.source,
sink = reqt.sink,
headers = reqt.headers,
proxy = reqt.proxy,
nredirects = (reqt.nredirects or 0) + 1,
create = reqt.create
}
-- pass location header back as a hint we redirected
headers = headers or {}
headers.location = headers.location or location
return result, code, headers, status
end
function trequest(reqt)
-- we loop until we get what we want, or
-- until we are sure there is no way to get it
local nreqt = adjustrequest(reqt)
local h = open(nreqt.host, nreqt.port, nreqt.create)
-- send request line and headers
h:sendrequestline(nreqt.method, nreqt.uri)
h:sendheaders(nreqt.headers)
-- if there is a body, send it
if nreqt.source then
h:sendbody(nreqt.headers, nreqt.source, nreqt.step)
end
local code, status = h:receivestatusline()
-- if it is an HTTP/0.9 server, simply get the body and we are done
if not code then
h:receive09body(status, nreqt.sink, nreqt.step)
return 1, 200
end
local headers
-- ignore any 100-continue messages
while code == 100 do
headers = h:receiveheaders()
code, status = h:receivestatusline()
end
-- we loop until we get what we want, or
-- until we are sure there is no way to get it
local nreqt = adjustrequest(reqt)
local h = open(nreqt.host, nreqt.port, nreqt.create)
-- send request line and headers
h:sendrequestline(nreqt.method, nreqt.uri)
h:sendheaders(nreqt.headers)
-- if there is a body, send it
if nreqt.source then
h:sendbody(nreqt.headers, nreqt.source, nreqt.step)
end
local code, status = h:receivestatusline()
-- if it is an HTTP/0.9 server, simply get the body and we are done
if not code then
h:receive09body(status, nreqt.sink, nreqt.step)
return 1, 200
end
local headers
-- ignore any 100-continue messages
while code == 100 do
headers = h:receiveheaders()
-- at this point we should have a honest reply from the server
-- we can't redirect if we already used the source, so we report the error
if shouldredirect(nreqt, code, headers) and not nreqt.source then
h:close()
return tredirect(reqt, headers.location)
end
-- here we are finally done
if shouldreceivebody(nreqt, code) then
h:receivebody(headers, nreqt.sink, nreqt.step)
end
code, status = h:receivestatusline()
end
headers = h:receiveheaders()
-- at this point we should have a honest reply from the server
-- we can't redirect if we already used the source, so we report the error
if shouldredirect(nreqt, code, headers) and not nreqt.source then
h:close()
return 1, code, headers, status
return tredirect(reqt, headers.location)
end
-- here we are finally done
if shouldreceivebody(nreqt, code) then
h:receivebody(headers, nreqt.sink, nreqt.step)
end
h:close()
return 1, code, headers, status
end
local function srequest(u, b)
local t = {}
local reqt = {
url = u,
sink = ltn12.sink.table(t)
local t = {}
local reqt = {
url = u,
sink = ltn12.sink.table(t)
}
if b then
reqt.source = ltn12.source.string(b)
reqt.headers = {
["content-length"] = string.len(b),
["content-type"] = "application/x-www-form-urlencoded"
}
if b then
reqt.source = ltn12.source.string(b)
reqt.headers = {
["content-length"] = string.len(b),
["content-type"] = "application/x-www-form-urlencoded"
}
reqt.method = "POST"
end
local code, headers, status = socket.skip(1, trequest(reqt))
return table.concat(t), code, headers, status
reqt.method = "POST"
end
local code, headers, status = socket.skip(1, trequest(reqt))
return table.concat(t), code, headers, status
end
request = socket.protect(function(reqt, body)
if base.type(reqt) == "string" then return srequest(reqt, body)
else return trequest(reqt) end
if base.type(reqt) == "string" then
return srequest(reqt, body)
else
return trequest(reqt)
end
end)

263
lualib/socket/smtp.lua
View File

@@ -40,95 +40,95 @@ ZONE = "-0000"
local metat = { __index = {} }
function metat.__index:greet(domain)
self.try(self.tp:check("2.."))
self.try(self.tp:command("EHLO", domain or DOMAIN))
return socket.skip(1, self.try(self.tp:check("2..")))
self.try(self.tp:check("2.."))
self.try(self.tp:command("EHLO", domain or DOMAIN))
return socket.skip(1, self.try(self.tp:check("2..")))
end
function metat.__index:mail(from)
self.try(self.tp:command("MAIL", "FROM:" .. from))
return self.try(self.tp:check("2.."))
self.try(self.tp:command("MAIL", "FROM:" .. from))
return self.try(self.tp:check("2.."))
end
function metat.__index:rcpt(to)
self.try(self.tp:command("RCPT", "TO:" .. to))
return self.try(self.tp:check("2.."))
self.try(self.tp:command("RCPT", "TO:" .. to))
return self.try(self.tp:check("2.."))
end
function metat.__index:data(src, step)
self.try(self.tp:command("DATA"))
self.try(self.tp:check("3.."))
self.try(self.tp:source(src, step))
self.try(self.tp:send("\r\n.\r\n"))
return self.try(self.tp:check("2.."))
self.try(self.tp:command("DATA"))
self.try(self.tp:check("3.."))
self.try(self.tp:source(src, step))
self.try(self.tp:send("\r\n.\r\n"))
return self.try(self.tp:check("2.."))
end
function metat.__index:quit()
self.try(self.tp:command("QUIT"))
return self.try(self.tp:check("2.."))
self.try(self.tp:command("QUIT"))
return self.try(self.tp:check("2.."))
end
function metat.__index:close()
return self.tp:close()
return self.tp:close()
end
function metat.__index:login(user, password)
self.try(self.tp:command("AUTH", "LOGIN"))
self.try(self.tp:check("3.."))
self.try(self.tp:command(mime.b64(user)))
self.try(self.tp:check("3.."))
self.try(self.tp:command(mime.b64(password)))
return self.try(self.tp:check("2.."))
self.try(self.tp:command("AUTH", "LOGIN"))
self.try(self.tp:check("3.."))
self.try(self.tp:command(mime.b64(user)))
self.try(self.tp:check("3.."))
self.try(self.tp:command(mime.b64(password)))
return self.try(self.tp:check("2.."))
end
function metat.__index:plain(user, password)
local auth = "PLAIN " .. mime.b64("\0" .. user .. "\0" .. password)
self.try(self.tp:command("AUTH", auth))
return self.try(self.tp:check("2.."))
local auth = "PLAIN " .. mime.b64("\0" .. user .. "\0" .. password)
self.try(self.tp:command("AUTH", auth))
return self.try(self.tp:check("2.."))
end
function metat.__index:auth(user, password, ext)
if not user or not password then return 1 end
if string.find(ext, "AUTH[^\n]+LOGIN") then
return self:login(user, password)
elseif string.find(ext, "AUTH[^\n]+PLAIN") then
return self:plain(user, password)
else
self.try(nil, "authentication not supported")
end
if not user or not password then return 1 end
if string.find(ext, "AUTH[^\n]+LOGIN") then
return self:login(user, password)
elseif string.find(ext, "AUTH[^\n]+PLAIN") then
return self:plain(user, password)
else
self.try(nil, "authentication not supported")
end
end
-- send message or throw an exception
function metat.__index:send(mailt)
self:mail(mailt.from)
if base.type(mailt.rcpt) == "table" then
for i,v in base.ipairs(mailt.rcpt) do
self:rcpt(v)
end
else
self:rcpt(mailt.rcpt)
self:mail(mailt.from)
if base.type(mailt.rcpt) == "table" then
for i, v in base.ipairs(mailt.rcpt) do
self:rcpt(v)
end
self:data(ltn12.source.chain(mailt.source, mime.stuff()), mailt.step)
else
self:rcpt(mailt.rcpt)
end
self:data(ltn12.source.chain(mailt.source, mime.stuff()), mailt.step)
end
function open(server, port, create)
local tp = socket.try(tp.connect(server or SERVER, port or PORT,
TIMEOUT, create))
local s = base.setmetatable({tp = tp}, metat)
-- make sure tp is closed if we get an exception
s.try = socket.newtry(function()
s:close()
end)
return s
local tp = socket.try(tp.connect(server or SERVER, port or PORT,
TIMEOUT, create))
local s = base.setmetatable({ tp = tp }, metat)
-- make sure tp is closed if we get an exception
s.try = socket.newtry(function()
s:close()
end)
return s
end
-- convert headers to lowercase
local function lower_headers(headers)
local lower = {}
for i,v in base.pairs(headers or lower) do
lower[string.lower(i)] = v
end
return lower
local lower = {}
for i, v in base.pairs(headers or lower) do
lower[string.lower(i)] = v
end
return lower
end
---------------------------------------------------------------------------
@@ -137,9 +137,9 @@ end
-- returns a hopefully unique mime boundary
local seqno = 0
local function newboundary()
seqno = seqno + 1
return string.format('%s%05d==%05u', os.date('%d%m%Y%H%M%S'),
math.random(0, 99999), seqno)
seqno = seqno + 1
return string.format('%s%05d==%05u', os.date('%d%m%Y%H%M%S'),
math.random(0, 99999), seqno)
end
-- send_message forward declaration
@@ -147,105 +147,116 @@ local send_message
-- yield the headers all at once, it's faster
local function send_headers(headers)
local h = "\r\n"
for i,v in base.pairs(headers) do
h = i .. ': ' .. v .. "\r\n" .. h
end
coroutine.yield(h)
local h = "\r\n"
for i, v in base.pairs(headers) do
h = i .. ': ' .. v .. "\r\n" .. h
end
coroutine.yield(h)
end
-- yield multipart message body from a multipart message table
local function send_multipart(mesgt)
-- make sure we have our boundary and send headers
local bd = newboundary()
local headers = lower_headers(mesgt.headers or {})
headers['content-type'] = headers['content-type'] or 'multipart/mixed'
headers['content-type'] = headers['content-type'] ..
'; boundary="' .. bd .. '"'
send_headers(headers)
-- send preamble
if mesgt.body.preamble then
coroutine.yield(mesgt.body.preamble)
coroutine.yield("\r\n")
end
-- send each part separated by a boundary
for i, m in base.ipairs(mesgt.body) do
coroutine.yield("\r\n--" .. bd .. "\r\n")
send_message(m)
end
-- send last boundary
coroutine.yield("\r\n--" .. bd .. "--\r\n\r\n")
-- send epilogue
if mesgt.body.epilogue then
coroutine.yield(mesgt.body.epilogue)
coroutine.yield("\r\n")
end
-- make sure we have our boundary and send headers
local bd = newboundary()
local headers = lower_headers(mesgt.headers or {})
headers['content-type'] = headers['content-type'] or 'multipart/mixed'
headers['content-type'] = headers['content-type'] ..
'; boundary="' .. bd .. '"'
send_headers(headers)
-- send preamble
if mesgt.body.preamble then
coroutine.yield(mesgt.body.preamble)
coroutine.yield("\r\n")
end
-- send each part separated by a boundary
for i, m in base.ipairs(mesgt.body) do
coroutine.yield("\r\n--" .. bd .. "\r\n")
send_message(m)
end
-- send last boundary
coroutine.yield("\r\n--" .. bd .. "--\r\n\r\n")
-- send epilogue
if mesgt.body.epilogue then
coroutine.yield(mesgt.body.epilogue)
coroutine.yield("\r\n")
end
end
-- yield message body from a source
local function send_source(mesgt)
-- make sure we have a content-type
local headers = lower_headers(mesgt.headers or {})
headers['content-type'] = headers['content-type'] or
'text/plain; charset="iso-8859-1"'
send_headers(headers)
-- send body from source
while true do
local chunk, err = mesgt.body()
if err then coroutine.yield(nil, err)
elseif chunk then coroutine.yield(chunk)
else break end
-- make sure we have a content-type
local headers = lower_headers(mesgt.headers or {})
headers['content-type'] = headers['content-type'] or
'text/plain; charset="iso-8859-1"'
send_headers(headers)
-- send body from source
while true do
local chunk, err = mesgt.body()
if err then
coroutine.yield(nil, err)
elseif chunk then
coroutine.yield(chunk)
else
break
end
end
end
-- yield message body from a string
local function send_string(mesgt)
-- make sure we have a content-type
local headers = lower_headers(mesgt.headers or {})
headers['content-type'] = headers['content-type'] or
'text/plain; charset="iso-8859-1"'
send_headers(headers)
-- send body from string
coroutine.yield(mesgt.body)
-- make sure we have a content-type
local headers = lower_headers(mesgt.headers or {})
headers['content-type'] = headers['content-type'] or
'text/plain; charset="iso-8859-1"'
send_headers(headers)
-- send body from string
coroutine.yield(mesgt.body)
end
-- message source
function send_message(mesgt)
if base.type(mesgt.body) == "table" then send_multipart(mesgt)
elseif base.type(mesgt.body) == "function" then send_source(mesgt)
else send_string(mesgt) end
if base.type(mesgt.body) == "table" then
send_multipart(mesgt)
elseif base.type(mesgt.body) == "function" then
send_source(mesgt)
else
send_string(mesgt)
end
end
-- set defaul headers
local function adjust_headers(mesgt)
local lower = lower_headers(mesgt.headers)
lower["date"] = lower["date"] or
os.date("!%a, %d %b %Y %H:%M:%S ") .. (mesgt.zone or ZONE)
lower["x-mailer"] = lower["x-mailer"] or socket._VERSION
-- this can't be overriden
lower["mime-version"] = "1.0"
return lower
local lower = lower_headers(mesgt.headers)
lower["date"] = lower["date"] or
os.date("!%a, %d %b %Y %H:%M:%S ") .. (mesgt.zone or ZONE)
lower["x-mailer"] = lower["x-mailer"] or socket._VERSION
-- this can't be overriden
lower["mime-version"] = "1.0"
return lower
end
function message(mesgt)
mesgt.headers = adjust_headers(mesgt)
-- create and return message source
local co = coroutine.create(function() send_message(mesgt) end)
return function()
local ret, a, b = coroutine.resume(co)
if ret then return a, b
else return nil, a end
mesgt.headers = adjust_headers(mesgt)
-- create and return message source
local co = coroutine.create(function() send_message(mesgt) end)
return function()
local ret, a, b = coroutine.resume(co)
if ret then
return a, b
else
return nil, a
end
end
end
---------------------------------------------------------------------------
-- High level SMTP API
-----------------------------------------------------------------------------
send = socket.protect(function(mailt)
local s = open(mailt.server, mailt.port, mailt.create)
local ext = s:greet(mailt.domain)
s:auth(mailt.user, mailt.password, ext)
s:send(mailt)
s:quit()
return s:close()
local s = open(mailt.server, mailt.port, mailt.create)
local ext = s:greet(mailt.domain)
s:auth(mailt.user, mailt.password, ext)
s:send(mailt)
s:quit()
return s:close()
end)

118
lualib/socket/tp.lua
View File

@@ -24,100 +24,104 @@ TIMEOUT = 60
-----------------------------------------------------------------------------
-- gets server reply (works for SMTP and FTP)
local function get_reply(c)
local code, current, sep
local line, err = c:receive()
local reply = line
if err then return nil, err end
code, sep = socket.skip(2, string.find(line, "^(%d%d%d)(.?)"))
if not code then return nil, "invalid server reply" end
if sep == "-" then -- reply is multiline
repeat
line, err = c:receive()
if err then return nil, err end
current, sep = socket.skip(2, string.find(line, "^(%d%d%d)(.?)"))
reply = reply .. "\n" .. line
-- reply ends with same code
until code == current and sep == " "
end
return code, reply
local code, current, sep
local line, err = c:receive()
local reply = line
if err then return nil, err end
code, sep = socket.skip(2, string.find(line, "^(%d%d%d)(.?)"))
if not code then return nil, "invalid server reply" end
if sep == "-" then -- reply is multiline
repeat
line, err = c:receive()
if err then return nil, err end
current, sep = socket.skip(2, string.find(line, "^(%d%d%d)(.?)"))
reply = reply .. "\n" .. line
-- reply ends with same code
until code == current and sep == " "
end
return code, reply
end
-- metatable for sock object
local metat = { __index = {} }
function metat.__index:check(ok)
local code, reply = get_reply(self.c)
if not code then return nil, reply end
if base.type(ok) ~= "function" then
if base.type(ok) == "table" then
for i, v in base.ipairs(ok) do
if string.find(code, v) then
return base.tonumber(code), reply
end
end
return nil, reply
else
if string.find(code, ok) then return base.tonumber(code), reply
else return nil, reply end
local code, reply = get_reply(self.c)
if not code then return nil, reply end
if base.type(ok) ~= "function" then
if base.type(ok) == "table" then
for i, v in base.ipairs(ok) do
if string.find(code, v) then
return base.tonumber(code), reply
end
else return ok(base.tonumber(code), reply) end
end
return nil, reply
else
if string.find(code, ok) then
return base.tonumber(code), reply
else
return nil, reply
end
end
else
return ok(base.tonumber(code), reply)
end
end
function metat.__index:command(cmd, arg)
if arg then
return self.c:send(cmd .. " " .. arg.. "\r\n")
else
return self.c:send(cmd .. "\r\n")
end
if arg then
return self.c:send(cmd .. " " .. arg .. "\r\n")
else
return self.c:send(cmd .. "\r\n")
end
end
function metat.__index:sink(snk, pat)
local chunk, err = c:receive(pat)
return snk(chunk, err)
local chunk, err = c:receive(pat)
return snk(chunk, err)
end
function metat.__index:send(data)
return self.c:send(data)
return self.c:send(data)
end
function metat.__index:receive(pat)
return self.c:receive(pat)
return self.c:receive(pat)
end
function metat.__index:getfd()
return self.c:getfd()
return self.c:getfd()
end
function metat.__index:dirty()
return self.c:dirty()
return self.c:dirty()
end
function metat.__index:getcontrol()
return self.c
return self.c
end
function metat.__index:source(source, step)
local sink = socket.sink("keep-open", self.c)
local ret, err = ltn12.pump.all(source, sink, step or ltn12.pump.step)
return ret, err
local sink = socket.sink("keep-open", self.c)
local ret, err = ltn12.pump.all(source, sink, step or ltn12.pump.step)
return ret, err
end
-- closes the underlying c
function metat.__index:close()
self.c:close()
return 1
self.c:close()
return 1
end
-- connect with server and return c object
function connect(host, port, timeout, create)
local c, e = (create or socket.tcp)()
if not c then return nil, e end
c:settimeout(timeout or TIMEOUT)
local r, e = c:connect(host, port)
if not r then
c:close()
return nil, e
end
return base.setmetatable({c = c}, metat)
local c, e = (create or socket.tcp)()
if not c then return nil, e end
c:settimeout(timeout or TIMEOUT)
local r, e = c:connect(host, port)
if not r then
c:close()
return nil, e
end
return base.setmetatable({ c = c }, metat)
end

328
lualib/socket/url.lua
View File

@@ -26,9 +26,9 @@ _VERSION = "URL 1.0.1"
-- escaped representation of string binary
-----------------------------------------------------------------------------
function escape(s)
return string.gsub(s, "([^A-Za-z0-9_])", function(c)
return string.format("%%%02x", string.byte(c))
end)
return string.gsub(s, "([^A-Za-z0-9_])", function(c)
return string.format("%%%02x", string.byte(c))
end)
end
-----------------------------------------------------------------------------
@@ -40,25 +40,28 @@ end
-- escaped representation of string binary
-----------------------------------------------------------------------------
local function make_set(t)
local s = {}
for i,v in base.ipairs(t) do
s[t[i]] = 1
end
return s
local s = {}
for i, v in base.ipairs(t) do
s[t[i]] = 1
end
return s
end
-- these are allowed withing a path segment, along with alphanum
-- other characters must be escaped
local segment_set = make_set {
"-", "_", ".", "!", "~", "*", "'", "(",
")", ":", "@", "&", "=", "+", "$", ",",
"-", "_", ".", "!", "~", "*", "'", "(",
")", ":", "@", "&", "=", "+", "$", ",",
}
local function protect_segment(s)
return string.gsub(s, "([^A-Za-z0-9_])", function (c)
if segment_set[c] then return c
else return string.format("%%%02x", string.byte(c)) end
end)
return string.gsub(s, "([^A-Za-z0-9_])", function(c)
if segment_set[c] then
return c
else
return string.format("%%%02x", string.byte(c))
end
end)
end
-----------------------------------------------------------------------------
@@ -69,9 +72,9 @@ end
-- escaped representation of string binary
-----------------------------------------------------------------------------
function unescape(s)
return string.gsub(s, "%%(%x%x)", function(hex)
return string.char(base.tonumber(hex, 16))
end)
return string.gsub(s, "%%(%x%x)", function(hex)
return string.char(base.tonumber(hex, 16))
end)
end
-----------------------------------------------------------------------------
@@ -83,24 +86,24 @@ end
-- corresponding absolute path
-----------------------------------------------------------------------------
local function absolute_path(base_path, relative_path)
if string.sub(relative_path, 1, 1) == "/" then return relative_path end
local path = string.gsub(base_path, "[^/]*$", "")
path = path .. relative_path
path = string.gsub(path, "([^/]*%./)", function (s)
if s ~= "./" then return s else return "" end
if string.sub(relative_path, 1, 1) == "/" then return relative_path end
local path = string.gsub(base_path, "[^/]*$", "")
path = path .. relative_path
path = string.gsub(path, "([^/]*%./)", function(s)
if s ~= "./" then return s else return "" end
end)
path = string.gsub(path, "/%.$", "/")
local reduced
while reduced ~= path do
reduced = path
path = string.gsub(reduced, "([^/]*/%.%./)", function(s)
if s ~= "../../" then return "" else return s end
end)
path = string.gsub(path, "/%.$", "/")
local reduced
while reduced ~= path do
reduced = path
path = string.gsub(reduced, "([^/]*/%.%./)", function (s)
if s ~= "../../" then return "" else return s end
end)
end
path = string.gsub(reduced, "([^/]*/%.%.)$", function (s)
if s ~= "../.." then return "" else return s end
end)
return path
end
path = string.gsub(reduced, "([^/]*/%.%.)$", function(s)
if s ~= "../.." then return "" else return s end
end)
return path
end
-----------------------------------------------------------------------------
@@ -122,51 +125,59 @@ end
-- the leading '/' in {/<path>} is considered part of <path>
-----------------------------------------------------------------------------
function parse(url, default)
-- initialize default parameters
local parsed = {}
for i,v in base.pairs(default or parsed) do parsed[i] = v end
-- empty url is parsed to nil
if not url or url == "" then return nil, "invalid url" end
-- remove whitespace
-- url = string.gsub(url, "%s", "")
-- get fragment
url = string.gsub(url, "#(.*)$", function(f)
parsed.fragment = f
return ""
-- initialize default parameters
local parsed = {}
for i, v in base.pairs(default or parsed) do parsed[i] = v end
-- empty url is parsed to nil
if not url or url == "" then return nil, "invalid url" end
-- remove whitespace
-- url = string.gsub(url, "%s", "")
-- get fragment
url = string.gsub(url, "#(.*)$", function(f)
parsed.fragment = f
return ""
end)
-- get scheme
url = string.gsub(url, "^([%w][%w%+%-%.]*)%:",
function(s)
parsed.scheme = s; return ""
end)
-- get scheme
url = string.gsub(url, "^([%w][%w%+%-%.]*)%:",
function(s) parsed.scheme = s; return "" end)
-- get authority
url = string.gsub(url, "^//([^/]*)", function(n)
parsed.authority = n
return ""
-- get authority
url = string.gsub(url, "^//([^/]*)", function(n)
parsed.authority = n
return ""
end)
-- get query stringing
url = string.gsub(url, "%?(.*)", function(q)
parsed.query = q
return ""
end)
-- get params
url = string.gsub(url, "%;(.*)", function(p)
parsed.params = p
return ""
end)
-- path is whatever was left
if url ~= "" then parsed.path = url end
local authority = parsed.authority
if not authority then return parsed end
authority = string.gsub(authority, "^([^@]*)@",
function(u)
parsed.userinfo = u; return ""
end)
-- get query stringing
url = string.gsub(url, "%?(.*)", function(q)
parsed.query = q
return ""
authority = string.gsub(authority, ":([^:]*)$",
function(p)
parsed.port = p; return ""
end)
-- get params
url = string.gsub(url, "%;(.*)", function(p)
parsed.params = p
return ""
if authority ~= "" then parsed.host = authority end
local userinfo = parsed.userinfo
if not userinfo then return parsed end
userinfo = string.gsub(userinfo, ":([^:]*)$",
function(p)
parsed.password = p; return ""
end)
-- path is whatever was left
if url ~= "" then parsed.path = url end
local authority = parsed.authority
if not authority then return parsed end
authority = string.gsub(authority,"^([^@]*)@",
function(u) parsed.userinfo = u; return "" end)
authority = string.gsub(authority, ":([^:]*)$",
function(p) parsed.port = p; return "" end)
if authority ~= "" then parsed.host = authority end
local userinfo = parsed.userinfo
if not userinfo then return parsed end
userinfo = string.gsub(userinfo, ":([^:]*)$",
function(p) parsed.password = p; return "" end)
parsed.user = userinfo
return parsed
parsed.user = userinfo
return parsed
end
-----------------------------------------------------------------------------
@@ -178,28 +189,28 @@ end
-- a stringing with the corresponding URL
-----------------------------------------------------------------------------
function build(parsed)
local ppath = parse_path(parsed.path or "")
local url = build_path(ppath)
if parsed.params then url = url .. ";" .. parsed.params end
if parsed.query then url = url .. "?" .. parsed.query end
local authority = parsed.authority
if parsed.host then
authority = parsed.host
if parsed.port then authority = authority .. ":" .. parsed.port end
local userinfo = parsed.userinfo
if parsed.user then
userinfo = parsed.user
if parsed.password then
userinfo = userinfo .. ":" .. parsed.password
end
end
if userinfo then authority = userinfo .. "@" .. authority end
end
if authority then url = "//" .. authority .. url end
if parsed.scheme then url = parsed.scheme .. ":" .. url end
if parsed.fragment then url = url .. "#" .. parsed.fragment end
-- url = string.gsub(url, "%s", "")
return url
local ppath = parse_path(parsed.path or "")
local url = build_path(ppath)
if parsed.params then url = url .. ";" .. parsed.params end
if parsed.query then url = url .. "?" .. parsed.query end
local authority = parsed.authority
if parsed.host then
authority = parsed.host
if parsed.port then authority = authority .. ":" .. parsed.port end
local userinfo = parsed.userinfo
if parsed.user then
userinfo = parsed.user
if parsed.password then
userinfo = userinfo .. ":" .. parsed.password
end
end
if userinfo then authority = userinfo .. "@" .. authority end
end
if authority then url = "//" .. authority .. url end
if parsed.scheme then url = parsed.scheme .. ":" .. url end
if parsed.fragment then url = url .. "#" .. parsed.fragment end
-- url = string.gsub(url, "%s", "")
return url
end
-----------------------------------------------------------------------------
@@ -211,35 +222,38 @@ end
-- corresponding absolute url
-----------------------------------------------------------------------------
function absolute(base_url, relative_url)
if base.type(base_url) == "table" then
base_parsed = base_url
base_url = build(base_parsed)
else
base_parsed = parse(base_url)
end
local relative_parsed = parse(relative_url)
if not base_parsed then return relative_url
elseif not relative_parsed then return base_url
elseif relative_parsed.scheme then return relative_url
else
relative_parsed.scheme = base_parsed.scheme
if not relative_parsed.authority then
relative_parsed.authority = base_parsed.authority
if not relative_parsed.path then
relative_parsed.path = base_parsed.path
if not relative_parsed.params then
relative_parsed.params = base_parsed.params
if not relative_parsed.query then
relative_parsed.query = base_parsed.query
end
end
else
relative_parsed.path = absolute_path(base_parsed.path or "",
relative_parsed.path)
end
if base.type(base_url) == "table" then
base_parsed = base_url
base_url = build(base_parsed)
else
base_parsed = parse(base_url)
end
local relative_parsed = parse(relative_url)
if not base_parsed then
return relative_url
elseif not relative_parsed then
return base_url
elseif relative_parsed.scheme then
return relative_url
else
relative_parsed.scheme = base_parsed.scheme
if not relative_parsed.authority then
relative_parsed.authority = base_parsed.authority
if not relative_parsed.path then
relative_parsed.path = base_parsed.path
if not relative_parsed.params then
relative_parsed.params = base_parsed.params
if not relative_parsed.query then
relative_parsed.query = base_parsed.query
end
end
return build(relative_parsed)
else
relative_parsed.path = absolute_path(base_parsed.path or "",
relative_parsed.path)
end
end
return build(relative_parsed)
end
end
-----------------------------------------------------------------------------
@@ -250,16 +264,16 @@ end
-- segment: a table with one entry per segment
-----------------------------------------------------------------------------
function parse_path(path)
local parsed = {}
path = path or ""
--path = string.gsub(path, "%s", "")
string.gsub(path, "([^/]+)", function (s) table.insert(parsed, s) end)
for i = 1, #parsed do
parsed[i] = unescape(parsed[i])
end
if string.sub(path, 1, 1) == "/" then parsed.is_absolute = 1 end
if string.sub(path, -1, -1) == "/" then parsed.is_directory = 1 end
return parsed
local parsed = {}
path = path or ""
--path = string.gsub(path, "%s", "")
string.gsub(path, "([^/]+)", function(s) table.insert(parsed, s) end)
for i = 1, #parsed do
parsed[i] = unescape(parsed[i])
end
if string.sub(path, 1, 1) == "/" then parsed.is_absolute = 1 end
if string.sub(path, -1, -1) == "/" then parsed.is_directory = 1 end
return parsed
end
-----------------------------------------------------------------------------
@@ -271,27 +285,27 @@ end
-- path: corresponding path stringing
-----------------------------------------------------------------------------
function build_path(parsed, unsafe)
local path = ""
local n = #parsed
if unsafe then
for i = 1, n-1 do
path = path .. parsed[i]
path = path .. "/"
end
if n > 0 then
path = path .. parsed[n]
if parsed.is_directory then path = path .. "/" end
end
else
for i = 1, n-1 do
path = path .. protect_segment(parsed[i])
path = path .. "/"
end
if n > 0 then
path = path .. protect_segment(parsed[n])
if parsed.is_directory then path = path .. "/" end
end
end
if parsed.is_absolute then path = "/" .. path end
return path
local path = ""
local n = #parsed
if unsafe then
for i = 1, n - 1 do
path = path .. parsed[i]
path = path .. "/"
end
if n > 0 then
path = path .. parsed[n]
if parsed.is_directory then path = path .. "/" end
end
else
for i = 1, n - 1 do
path = path .. protect_segment(parsed[i])
path = path .. "/"
end
if n > 0 then
path = path .. protect_segment(parsed[n])
if parsed.is_directory then path = path .. "/" end
end
end
if parsed.is_absolute then path = "/" .. path end
return path
end

160
src/lua-env-safe.lua
View File

@@ -1,10 +1,12 @@
-- Sanitize the Lua environment to:
-- Prevent scripts from accessing files outside the game directory
-- Prevent usage of libraries other than
-- Prevent usage of libraries other than
-- Utility: Convert a list of strings into a map of string->true
local function tmap(t) local u = {}; for _, n in ipairs(t) do u[n] = true end; return u; end
local function tmap(t)
local u = {}; for _, n in ipairs(t) do u[n] = true end; return u;
end
-- Save banned global variables for wrapping with safe functions
local old_io = io
@@ -15,98 +17,99 @@ local old_package = package
-- Remove all global variables except a whitelist
local ok_names = tmap {
'_G', '_bllua_ts', '_bllua_on_unload', '_bllua_on_error',
'string', 'table', 'math', 'coroutine', 'bit',
'pairs', 'ipairs', 'next', 'unpack', 'select',
'error', 'assert', 'pcall', 'xpcall',
'type', 'tostring', 'tonumber',
'loadstring',
'getmetatable', 'setmetatable',
'rawget', 'rawset', 'rawequal', 'rawlen',
'module', '_VERSION',
'_G', '_bllua_ts', '_bllua_on_unload', '_bllua_on_error',
'string', 'table', 'math', 'coroutine', 'bit',
'pairs', 'ipairs', 'next', 'unpack', 'select',
'error', 'assert', 'pcall', 'xpcall',
'type', 'tostring', 'tonumber',
'loadstring',
'getmetatable', 'setmetatable',
'rawget', 'rawset', 'rawequal', 'rawlen',
'module', '_VERSION',
}
local not_ok_names = {}
for n, _ in pairs(_G) do
if not ok_names[n] then
table.insert(not_ok_names, n)
end
if not ok_names[n] then
table.insert(not_ok_names, n)
end
end
for _, n in ipairs(not_ok_names) do
_G[n] = nil
_G[n] = nil
end
-- Sanitize file paths to point only to allowed files within the game directory
-- List of allowed directories for reading/writing
local allowed_dirs = tmap {
'add-ons', 'base', 'config', 'saves', 'screenshots', 'shaders'
'add-ons', 'base', 'config', 'saves', 'screenshots', 'shaders'
}
-- List of allowed directories for reading only
local allowed_dirs_readonly = tmap {
'lualib'
'lualib'
}
-- List of disallowed file extensions - basically executable file extensions
-- Note that even without this protection, exploiting would still require somehow
-- getting a file within the allowed directories to autorun,
-- so this is just a precaution.
local disallowed_exts = tmap {
-- windows
'bat','bin','cab','cmd','com','cpl','ex_','exe','gadget','inf','ins','inx','isu',
'job','jse','lnk','msc','msi','msp','mst','paf','pif','ps1','reg','rgs','scr',
'sct','shb','shs','u3p','vb','vbe','vbs','vbscript','ws','wsf','wsh',
-- linux
'csh','ksh','out','run','sh',
-- mac/other
'action','apk','app','command','ipa','osx','prg','workflow',
-- windows
'bat', 'bin', 'cab', 'cmd', 'com', 'cpl', 'ex_', 'exe', 'gadget', 'inf', 'ins', 'inx', 'isu',
'job', 'jse', 'lnk', 'msc', 'msi', 'msp', 'mst', 'paf', 'pif', 'ps1', 'reg', 'rgs', 'scr',
'sct', 'shb', 'shs', 'u3p', 'vb', 'vbe', 'vbs', 'vbscript', 'ws', 'wsf', 'wsh',
-- linux
'csh', 'ksh', 'out', 'run', 'sh',
-- mac/other
'action', 'apk', 'app', 'command', 'ipa', 'osx', 'prg', 'workflow',
}
-- Arguments: file name (relative to game directory), boolean true if only reading
-- Return: clean file path if allowed (or nil if disallowed),
-- error string (or nil if allowed)
local function safe_path(fn, readonly)
fn = fn:gsub('\\', '/')
fn = fn:gsub('^ +', '')
fn = fn:gsub(' +$', '')
-- whitelist characters
local ic = fn:find('[^a-zA-Z0-9_%-/ %.]')
if ic then
return nil, 'Filename \''..fn..'\' contains invalid character \''..
fn:sub(ic, ic)..'\' at position '..ic
end
-- disallow up-dirs, absolute paths, and relative paths
-- './' and '../' are possible in scripts, because they're processed into
-- absolute paths in util.lua before reaching here
if fn:find('^%.') or fn:find('%.%.') or fn:find(':') or fn:find('^/') then
return nil, 'Filename \''..fn..'\' contains invalid sequence'
end
-- allow only whitelisted dirs
local dir = fn:match('^([^/]+)/')
if (not dir) or (
(not allowed_dirs[dir:lower()]) and
((not readonly) or (not allowed_dirs_readonly[dir:lower()])) ) then
return nil, 'filename is in disallowed directory '..(dir or 'nil')
end
-- disallow blacklisted extensions or no extension
local ext = fn:match('%.([^/%.]+)$')
if (not ext) or (disallowed_exts[ext:lower()]) then
return nil, 'Filename \''..fn..'\' has disallowed extension \''..
(ext or '')..'\''
end
return fn, nil
fn = fn:gsub('\\', '/')
fn = fn:gsub('^ +', '')
fn = fn:gsub(' +$', '')
-- whitelist characters
local ic = fn:find('[^a-zA-Z0-9_%-/ %.]')
if ic then
return nil, 'Filename \'' .. fn .. '\' contains invalid character \'' ..
fn:sub(ic, ic) .. '\' at position ' .. ic
end
-- disallow up-dirs, absolute paths, and relative paths
-- './' and '../' are possible in scripts, because they're processed into
-- absolute paths in util.lua before reaching here
if fn:find('^%.') or fn:find('%.%.') or fn:find(':') or fn:find('^/') then
return nil, 'Filename \'' .. fn .. '\' contains invalid sequence'
end
-- allow only whitelisted dirs
local dir = fn:match('^([^/]+)/')
if (not dir) or (
(not allowed_dirs[dir:lower()]) and
((not readonly) or (not allowed_dirs_readonly[dir:lower()]))) then
return nil, 'filename is in disallowed directory ' .. (dir or 'nil')
end
-- disallow blacklisted extensions or no extension
local ext = fn:match('%.([^/%.]+)$')
if (not ext) or (disallowed_exts[ext:lower()]) then
return nil, 'Filename \'' .. fn .. '\' has disallowed extension \'' ..
(ext or '') .. '\''
end
return fn, nil
end
-- Wrap io.open with path sanitization
function _bllua_io_open(fn, md)
md = md or 'r'
local readonly = md=='r' or md=='rb'
local fns, err = safe_path(fn, readonly)
if fns then
return old_io.open(fns, md)
else
return nil, err
end
md = md or 'r'
local readonly = md == 'r' or md == 'rb'
local fns, err = safe_path(fn, readonly)
if fns then
return old_io.open(fns, md)
else
return nil, err
end
end
-- Allow io.type (works on file handles returned by io.open)
function _bllua_io_type(f)
return old_io.type(f)
return old_io.type(f)
end
-- Wrap require with a blacklist for unsafe built-in modules
@@ -114,29 +117,30 @@ end
-- Note that util.lua wraps this and provides 'require',
-- only falling back here if the package is not found in user files
local disallowed_packages = tmap {
'ffi', 'debug', 'package', 'io', 'os',
'_bllua_ts',
'ffi', 'debug', 'package', 'io', 'os',
'_bllua_ts',
}
function _bllua_requiresecure(name)
if name:find('[^a-zA-Z0-9_%-%.]') or name:find('%.%.') or
name:find('^%.') or name:find('%.$') then
error('require: package name contains invalid character', 3)
elseif disallowed_packages[name] then
error('require: attempt to require disallowed module \''..name..'\'', 3)
else
-- todo: reimplement require to not use package.* stuff?
return old_require(name)
end
if name:find('[^a-zA-Z0-9_%-%.]') or name:find('%.%.') or
name:find('^%.') or name:find('%.$') then
error('require: package name contains invalid character', 3)
elseif disallowed_packages[name] then
error('require: attempt to require disallowed module \'' .. name .. '\'', 3)
else
-- todo: reimplement require to not use package.* stuff?
return old_require(name)
end
end
package = {
seeall = old_package.seeall,
seeall = old_package.seeall,
}
-- Provide limited debug
debug = {
traceback = old_debug.traceback,
getinfo = old_debug.getinfo,
getfilename = old_debug.getfilename, -- defined in lua.env.lua
traceback = old_debug.traceback,
getinfo = old_debug.getinfo,
getfilename = old_debug.getfilename, -- defined in lua.env.lua
}
_bllua_ts.echo(' Executed bllua-env-safe.lua')

44
src/lua-env.lua
View File

@@ -9,32 +9,32 @@ _bllua_on_unload = {}
-- Utility for getting the current filename
function debug.getfilename(level)
if type(level) == 'number' then level = level+1 end
local info = debug.getinfo(level)
if not info then return nil end
local filename = info.source:match('^%-%-%[%[([^%]]+)%]%]')
return filename
if type(level) == 'number' then level = level + 1 end
local info = debug.getinfo(level)
if not info then return nil end
local filename = info.source:match('^%-%-%[%[([^%]]+)%]%]')
return filename
end
-- Called when pcall fails on a ts->lua call, used to print detailed error info
function _bllua_on_error(err)
err = err:match(': (.+)$') or err
local tracelines = {err}
local level = 2
while true do
local info = debug.getinfo(level)
if not info then break end
local filename = debug.getfilename(level) or info.short_src
local funcname = info.name
if funcname=='dofile' then break end
table.insert(tracelines, string.format('%s:%s in function \'%s\'',
filename,
info.currentline==-1 and '' or info.currentline..':',
funcname
))
level = level+1
end
return table.concat(tracelines, '\n')
err = err:match(': (.+)$') or err
local tracelines = { err }
local level = 2
while true do
local info = debug.getinfo(level)
if not info then break end
local filename = debug.getfilename(level) or info.short_src
local funcname = info.name
if funcname == 'dofile' then break end
table.insert(tracelines, string.format('%s:%s in function \'%s\'',
filename,
info.currentline == -1 and '' or info.currentline .. ':',
funcname
))
level = level + 1
end
return table.concat(tracelines, '\n')
end
_bllua_ts.echo(' Executed bllua-env.lua')

246
src/util/libbl-types.lua
View File

@@ -4,129 +4,129 @@
-- Class hierarchy, adapted from https://notabug.org/Queuenard/blockland-DLL-tools/src/master/class_hierarchy
bl.class('SimObject')
bl.class('ScriptObject', 'SimObject')
bl.class('SimSet', 'SimObject')
bl.class('SimGroup', 'SimSet')
bl.class('GuiControl', 'SimGroup')
bl.class('GuiTextCtrl' , 'GuiControl')
bl.class('GuiSwatchCtrl' , 'GuiControl')
bl.class('GuiButtonBaseCtrl' , 'GuiControl')
bl.class('GuiArrayCtrl' , 'GuiControl')
bl.class('GuiScrollCtrl' , 'GuiControl')
bl.class('GuiMouseEventCtrl' , 'GuiControl')
bl.class('GuiProgressCtrl' , 'GuiControl')
bl.class('GuiSliderCtrl' , 'GuiControl')
bl.class('GuiConsoleTextCtrl' , 'GuiControl')
bl.class('GuiTSCtrl' , 'GuiControl')
bl.class('GuiObjectView', 'GuiTSCtrl')
bl.class('GameTSCtrl' , 'GuiTSCtrl')
bl.class('EditTSCtrl' , 'GuiTSCtrl')
bl.class('GuiPlayerView', 'GuiTSCtrl')
bl.class('GuiShapeNameHud' , 'GuiControl')
bl.class('GuiHealthBarHud' , 'GuiControl')
bl.class('GuiGraphCtrl' , 'GuiControl')
bl.class('GuiInspector' , 'GuiControl')
bl.class('GuiChunkedBitmapCtrl', 'GuiControl')
bl.class('GuiInputCtrl' , 'GuiControl')
bl.class('GuiNoMouseCtrl' , 'GuiControl')
bl.class('GuiBitmapBorderCtrl' , 'GuiControl')
bl.class('GuiBackgroundCtrl' , 'GuiControl')
bl.class('GuiEditorRuler' , 'GuiControl')
bl.class('GuiClockHud' , 'GuiControl')
bl.class('GuiEditCtrl' , 'GuiControl')
bl.class('GuiFilterCtrl' , 'GuiControl')
bl.class('GuiFrameSetCtrl' , 'GuiControl')
bl.class('GuiMenuBar' , 'GuiControl')
bl.class('GuiMessageVectorCtrl', 'GuiControl')
bl.class('GuiBitmapCtrl' , 'GuiControl')
bl.class('GuiCrossHairHud', 'GuiBitmapCtrl')
bl.class('ScriptGroup', 'SimGroup')
bl.class('NetConnection', 'SimGroup')
bl.class('GameConnection', 'NetConnection')
bl.class('Path', 'SimGroup')
bl.class('TCPObject', 'SimObject')
bl.class('SOCKObject', 'TCPObject')
bl.class('HTTPObject', 'TCPObject')
bl.class('SimDataBlock', 'SimObject')
bl.class('AudioEnvironment' , 'SimDataBlock')
bl.class('AudioSampleEnvironment', 'SimDataBlock')
bl.class('AudioDescription' , 'SimDataBlock')
bl.class('GameBaseData' , 'SimDataBlock')
bl.class('ShapeBaseData' , 'GameBaseData')
bl.class('CameraData' , 'ShapeBaseData')
bl.class('ItemData' , 'ShapeBaseData')
bl.class('MissionMarkerData', 'ShapeBaseData')
bl.class('PathCameraData' , 'ShapeBaseData')
bl.class('PlayerData' , 'ShapeBaseData')
bl.class('StaticShapeData' , 'ShapeBaseData')
bl.class('VehicleData' , 'ShapeBaseData')
bl.class('FlyingVehicleData' , 'VehicleData')
bl.class('WheeledVehicleData', 'VehicleData')
bl.class('DebrisData' , 'GameBaseData')
bl.class('ProjectileData' , 'GameBaseData')
bl.class('ShapeBaseImageData' , 'GameBaseData')
bl.class('TriggerData' , 'GameBaseData')
bl.class('ExplosionData' , 'GameBaseData')
bl.class('fxLightData' , 'GameBaseData')
bl.class('LightningData' , 'GameBaseData')
bl.class('ParticleEmitterNodeData', 'GameBaseData')
bl.class('SplashData' , 'GameBaseData')
bl.class('fxDTSBrickData' , 'GameBaseData')
bl.class('ParticleEmitterData' , 'GameBaseData')
bl.class('WheeledVehicleTire' , 'SimDataBlock')
bl.class('WheeledVehicleSpring' , 'SimDataBlock')
bl.class('TSShapeConstructor' , 'SimDataBlock')
bl.class('AudioProfile' , 'SimDataBlock')
bl.class('ParticleData' , 'SimDataBlock')
bl.class('MaterialPropertyMap', 'SimObject')
bl.class('NetObject', 'SimObject')
bl.class('SceneObject', 'NetObject')
bl.class('GameBase', 'SceneObject')
bl.class('ShapeBase', 'GameBase')
bl.class('MissionMarker', 'ShapeBase')
bl.class('SpawnSphere' , 'MissionMarker')
bl.class('VehicleSpawnMarker', 'MissionMarker')
bl.class('Waypoint' , 'MissionMarker')
bl.class('StaticShape' , 'ShapeBase')
bl.class('ScopeAlwaysShape', 'StaticShape')
bl.class('Player' , 'ShapeBase')
bl.class('AIPlayer', 'Player')
bl.class('Camera' , 'ShapeBase')
bl.class('Item' , 'ShapeBase')
bl.class('PathCamera' , 'ShapeBase')
bl.class('Vehicle' , 'ShapeBase')
bl.class('FlyingVehicle' , 'Vehicle')
bl.class('WheeledVehicle', 'Vehicle')
bl.class('Explosion' , 'GameBase')
bl.class('Splash' , 'GameBase')
bl.class('Debris' , 'GameBase')
bl.class('Projectile' , 'GameBase')
bl.class('Trigger' , 'GameBase')
bl.class('fxLight' , 'GameBase')
bl.class('Lightning' , 'GameBase')
bl.class('ParticleEmitterNode', 'GameBase')
bl.class('ParticleEmitter' , 'GameBase')
bl.class('Precipitation' , 'GameBase')
bl.class('TSStatic' , 'SceneObject')
bl.class('VehicleBlocker', 'SceneObject')
bl.class('Marker' , 'SceneObject')
bl.class('AudioEmitter' , 'SceneObject')
bl.class('PhysicalZone' , 'SceneObject')
bl.class('fxDayCycle' , 'SceneObject')
bl.class('fxDTSBrick' , 'SceneObject')
bl.class('fxPlane' , 'SceneObject')
bl.class('fxSunLight' , 'SceneObject')
bl.class('Sky' , 'SceneObject')
bl.class('SceneRoot' , 'SceneObject')
bl.class('Sun', 'NetObject')
bl.class('GuiCursor', 'SimObject')
bl.class('ConsoleLogger' , 'SimObject')
bl.class('QuotaObject' , 'SimObject')
bl.class('FileObject' , 'SimObject')
bl.class('BanList' , 'SimObject')
bl.class('GuiControlProfile', 'SimObject')
bl.class('MessageVector' , 'SimObject')
bl.class('ActionMap' , 'SimObject')
bl.class('ScriptObject', 'SimObject')
bl.class('SimSet', 'SimObject')
bl.class('SimGroup', 'SimSet')
bl.class('GuiControl', 'SimGroup')
bl.class('GuiTextCtrl', 'GuiControl')
bl.class('GuiSwatchCtrl', 'GuiControl')
bl.class('GuiButtonBaseCtrl', 'GuiControl')
bl.class('GuiArrayCtrl', 'GuiControl')
bl.class('GuiScrollCtrl', 'GuiControl')
bl.class('GuiMouseEventCtrl', 'GuiControl')
bl.class('GuiProgressCtrl', 'GuiControl')
bl.class('GuiSliderCtrl', 'GuiControl')
bl.class('GuiConsoleTextCtrl', 'GuiControl')
bl.class('GuiTSCtrl', 'GuiControl')
bl.class('GuiObjectView', 'GuiTSCtrl')
bl.class('GameTSCtrl', 'GuiTSCtrl')
bl.class('EditTSCtrl', 'GuiTSCtrl')
bl.class('GuiPlayerView', 'GuiTSCtrl')
bl.class('GuiShapeNameHud', 'GuiControl')
bl.class('GuiHealthBarHud', 'GuiControl')
bl.class('GuiGraphCtrl', 'GuiControl')
bl.class('GuiInspector', 'GuiControl')
bl.class('GuiChunkedBitmapCtrl', 'GuiControl')
bl.class('GuiInputCtrl', 'GuiControl')
bl.class('GuiNoMouseCtrl', 'GuiControl')
bl.class('GuiBitmapBorderCtrl', 'GuiControl')
bl.class('GuiBackgroundCtrl', 'GuiControl')
bl.class('GuiEditorRuler', 'GuiControl')
bl.class('GuiClockHud', 'GuiControl')
bl.class('GuiEditCtrl', 'GuiControl')
bl.class('GuiFilterCtrl', 'GuiControl')
bl.class('GuiFrameSetCtrl', 'GuiControl')
bl.class('GuiMenuBar', 'GuiControl')
bl.class('GuiMessageVectorCtrl', 'GuiControl')
bl.class('GuiBitmapCtrl', 'GuiControl')
bl.class('GuiCrossHairHud', 'GuiBitmapCtrl')
bl.class('ScriptGroup', 'SimGroup')
bl.class('NetConnection', 'SimGroup')
bl.class('GameConnection', 'NetConnection')
bl.class('Path', 'SimGroup')
bl.class('TCPObject', 'SimObject')
bl.class('SOCKObject', 'TCPObject')
bl.class('HTTPObject', 'TCPObject')
bl.class('SimDataBlock', 'SimObject')
bl.class('AudioEnvironment', 'SimDataBlock')
bl.class('AudioSampleEnvironment', 'SimDataBlock')
bl.class('AudioDescription', 'SimDataBlock')
bl.class('GameBaseData', 'SimDataBlock')
bl.class('ShapeBaseData', 'GameBaseData')
bl.class('CameraData', 'ShapeBaseData')
bl.class('ItemData', 'ShapeBaseData')
bl.class('MissionMarkerData', 'ShapeBaseData')
bl.class('PathCameraData', 'ShapeBaseData')
bl.class('PlayerData', 'ShapeBaseData')
bl.class('StaticShapeData', 'ShapeBaseData')
bl.class('VehicleData', 'ShapeBaseData')
bl.class('FlyingVehicleData', 'VehicleData')
bl.class('WheeledVehicleData', 'VehicleData')
bl.class('DebrisData', 'GameBaseData')
bl.class('ProjectileData', 'GameBaseData')
bl.class('ShapeBaseImageData', 'GameBaseData')
bl.class('TriggerData', 'GameBaseData')
bl.class('ExplosionData', 'GameBaseData')
bl.class('fxLightData', 'GameBaseData')
bl.class('LightningData', 'GameBaseData')
bl.class('ParticleEmitterNodeData', 'GameBaseData')
bl.class('SplashData', 'GameBaseData')
bl.class('fxDTSBrickData', 'GameBaseData')
bl.class('ParticleEmitterData', 'GameBaseData')
bl.class('WheeledVehicleTire', 'SimDataBlock')
bl.class('WheeledVehicleSpring', 'SimDataBlock')
bl.class('TSShapeConstructor', 'SimDataBlock')
bl.class('AudioProfile', 'SimDataBlock')
bl.class('ParticleData', 'SimDataBlock')
bl.class('MaterialPropertyMap', 'SimObject')
bl.class('NetObject', 'SimObject')
bl.class('SceneObject', 'NetObject')
bl.class('GameBase', 'SceneObject')
bl.class('ShapeBase', 'GameBase')
bl.class('MissionMarker', 'ShapeBase')
bl.class('SpawnSphere', 'MissionMarker')
bl.class('VehicleSpawnMarker', 'MissionMarker')
bl.class('Waypoint', 'MissionMarker')
bl.class('StaticShape', 'ShapeBase')
bl.class('ScopeAlwaysShape', 'StaticShape')
bl.class('Player', 'ShapeBase')
bl.class('AIPlayer', 'Player')
bl.class('Camera', 'ShapeBase')
bl.class('Item', 'ShapeBase')
bl.class('PathCamera', 'ShapeBase')
bl.class('Vehicle', 'ShapeBase')
bl.class('FlyingVehicle', 'Vehicle')
bl.class('WheeledVehicle', 'Vehicle')
bl.class('Explosion', 'GameBase')
bl.class('Splash', 'GameBase')
bl.class('Debris', 'GameBase')
bl.class('Projectile', 'GameBase')
bl.class('Trigger', 'GameBase')
bl.class('fxLight', 'GameBase')
bl.class('Lightning', 'GameBase')
bl.class('ParticleEmitterNode', 'GameBase')
bl.class('ParticleEmitter', 'GameBase')
bl.class('Precipitation', 'GameBase')
bl.class('TSStatic', 'SceneObject')
bl.class('VehicleBlocker', 'SceneObject')
bl.class('Marker', 'SceneObject')
bl.class('AudioEmitter', 'SceneObject')
bl.class('PhysicalZone', 'SceneObject')
bl.class('fxDayCycle', 'SceneObject')
bl.class('fxDTSBrick', 'SceneObject')
bl.class('fxPlane', 'SceneObject')
bl.class('fxSunLight', 'SceneObject')
bl.class('Sky', 'SceneObject')
bl.class('SceneRoot', 'SceneObject')
bl.class('Sun', 'NetObject')
bl.class('GuiCursor', 'SimObject')
bl.class('ConsoleLogger', 'SimObject')
bl.class('QuotaObject', 'SimObject')
bl.class('FileObject', 'SimObject')
bl.class('BanList', 'SimObject')
bl.class('GuiControlProfile', 'SimObject')
bl.class('MessageVector', 'SimObject')
bl.class('ActionMap', 'SimObject')
-- Auto-generated from game scripts
bl.type('ActionMap::blockBind:1', 'object')

1564
src/util/libbl.lua
View File

File diff suppressed because it is too large Load Diff

331
src/util/libts-lua.lua
View File

@@ -1,4 +1,3 @@
-- This Lua code provides some built-in utilities for writing Lua add-ons
-- It is eval'd automatically once BLLua3 has loaded the TS API and environment
-- It only has access to the sandboxed lua environment, just like user code.
@@ -8,9 +7,10 @@ ts = _bllua_ts
-- Provide limited OS functions
os = os or {}
---@diagnostic disable-next-line: duplicate-set-field
function os.time() return math.floor(tonumber(_bllua_ts.call('getSimTime'))/1000) end
function os.time() return math.floor(tonumber(_bllua_ts.call('getSimTime')) / 1000) end
---@diagnostic disable-next-line: duplicate-set-field
function os.clock() return tonumber(_bllua_ts.call('getSimTime'))/1000 end
function os.clock() return tonumber(_bllua_ts.call('getSimTime')) / 1000 end
-- Virtual file class, emulating a file object as returned by io.open
-- Used to wrap io.open to allow reading from zips (using TS)
@@ -18,145 +18,150 @@ function os.clock() return tonumber(_bllua_ts.call('getSimTime'))/1000 end
-- Can't read nulls, can't distinguish between CRLF and LF.
-- Todo someday: actually read the zip in lua?
local file_meta = {
read = function(file, mode)
file:_init()
if not file or type(file)~='table' or not file._is_file then error('File:read: Not a file', 2) end
if file._is_open ~= true then error('File:read: File is closed', 2) end
if mode=='*n' then
local ws, n = file.data:match('^([ \t\r\n]*)([0-9%.%-e]+)', file.pos)
if n then
file.pos = file.pos + #ws + #n
return n
else
return nil
end
elseif mode=='*a' then
local d = file.data:sub(file.pos, #file.data)
file.pos = #file.data + 1
return d
elseif mode=='*l' then
local l, ws = file.data:match('^([^\r\n]*)(\r?\n)', file.pos)
if not l then
l = file.data:match('^([^\r\n]*)$', file.pos); ws = '';
if l=='' then return nil end
end
if l then
file.pos = file.pos + #l + #ws
return l
else
return nil
end
elseif type(mode)=='number' then
local d = file.data:sub(file.pos, file.pos+mode)
file.pos = file.pos + #d
return d
else
error('File:read: Invalid mode \''..mode..'\'', 2)
end
end,
lines = function(file)
file:_init()
return function()
return file:read('*l')
end
end,
close = function(file)
if not file._is_open then error('File:close: File is not open', 2) end
file._is_open = false
end,
__index = function(f, k) return rawget(f, k) or getmetatable(f)[k] end,
_init = function(f)
if not f.data then
f.data = _bllua_ts.call('_bllua_ReadEntireFile', f.filename)
end
end,
read = function(file, mode)
file:_init()
if not file or type(file) ~= 'table' or not file._is_file then error('File:read: Not a file', 2) end
if file._is_open ~= true then error('File:read: File is closed', 2) end
if mode == '*n' then
local ws, n = file.data:match('^([ \t\r\n]*)([0-9%.%-e]+)', file.pos)
if n then
file.pos = file.pos + #ws + #n
return n
else
return nil
end
elseif mode == '*a' then
local d = file.data:sub(file.pos, #file.data)
file.pos = #file.data + 1
return d
elseif mode == '*l' then
local l, ws = file.data:match('^([^\r\n]*)(\r?\n)', file.pos)
if not l then
l = file.data:match('^([^\r\n]*)$', file.pos); ws = '';
if l == '' then return nil end
end
if l then
file.pos = file.pos + #l + #ws
return l
else
return nil
end
elseif type(mode) == 'number' then
local d = file.data:sub(file.pos, file.pos + mode)
file.pos = file.pos + #d
return d
else
error('File:read: Invalid mode \'' .. mode .. '\'', 2)
end
end,
lines = function(file)
file:_init()
return function()
return file:read('*l')
end
end,
close = function(file)
if not file._is_open then error('File:close: File is not open', 2) end
file._is_open = false
end,
__index = function(f, k) return rawget(f, k) or getmetatable(f)[k] end,
_init = function(f)
if not f.data then
f.data = _bllua_ts.call('_bllua_ReadEntireFile', f.filename)
end
end,
}
local function new_file_obj(fn)
local file = {
_is_file = true,
_is_open = true,
pos = 1,
__index = file_meta.__index,
filename = fn,
data = nil,
}
setmetatable(file, file_meta)
return file
local file = {
_is_file = true,
_is_open = true,
pos = 1,
__index = file_meta.__index,
filename = fn,
data = nil,
}
setmetatable(file, file_meta)
return file
end
local function tflip(t) local u = {}; for _, n in ipairs(t) do u[n] = true end; return u; end
local allowed_zip_dirs = tflip{
'add-ons', 'base', 'config', 'saves', 'screenshots', 'shaders'
local function tflip(t)
local u = {}; for _, n in ipairs(t) do u[n] = true end; return u;
end
local allowed_zip_dirs = tflip {
'add-ons', 'base', 'config', 'saves', 'screenshots', 'shaders'
}
local function io_open_absolute(fn, mode)
-- if file exists, use original mode
local res, err = _bllua_io_open(fn, mode)
if res then return res end
-- otherwise, if TS sees file but Lua doesn't, it must be in a zip, so use TS reader
local dir = fn:match('^[^/]+')
if not allowed_zip_dirs[dir:lower()] then return nil, 'File is not in one of the allowed directories' end
local exist = _bllua_ts.call('isFile', fn) == '1'
if not exist then return nil, err end
if mode~=nil and mode~='r' and mode~='rb' then
return nil, 'Files in zips can only be opened in read mode' end
-- return a temp lua file object with the data
local fi = new_file_obj(fn)
return fi
-- if file exists, use original mode
local res, err = _bllua_io_open(fn, mode)
if res then return res end
-- otherwise, if TS sees file but Lua doesn't, it must be in a zip, so use TS reader
local dir = fn:match('^[^/]+')
if not allowed_zip_dirs[dir:lower()] then return nil, 'File is not in one of the allowed directories' end
local exist = _bllua_ts.call('isFile', fn) == '1'
if not exist then return nil, err end
if mode ~= nil and mode ~= 'r' and mode ~= 'rb' then
return nil, 'Files in zips can only be opened in read mode'
end
-- return a temp lua file object with the data
local fi = new_file_obj(fn)
return fi
end
io = io or {}
---@diagnostic disable-next-line: duplicate-set-field
function io.open(fn, mode, errn)
errn = errn or 1
-- try to open the file with relative path, otherwise use absolute path
local curfn = debug.getfilename(errn + 1) or _bllua_ts.getvar('Con::File')
if curfn == '' then curfn = nil end
if fn:find('^%.') then
local relfn = curfn and fn:find('^%./') and
curfn:gsub('[^/]+$', '')..fn:gsub('^%./', '')
if relfn then
local fi, err = io_open_absolute(relfn, mode)
return fi, err, relfn
else
return nil, 'Invalid path', fn
end
else
local fi, err = io_open_absolute(fn, mode)
return fi, err, fn
end
errn = errn or 1
-- try to open the file with relative path, otherwise use absolute path
local curfn = debug.getfilename(errn + 1) or _bllua_ts.getvar('Con::File')
if curfn == '' then curfn = nil end
if fn:find('^%.') then
local relfn = curfn and fn:find('^%./') and
curfn:gsub('[^/]+$', '') .. fn:gsub('^%./', '')
if relfn then
local fi, err = io_open_absolute(relfn, mode)
return fi, err, relfn
else
return nil, 'Invalid path', fn
end
else
local fi, err = io_open_absolute(fn, mode)
return fi, err, fn
end
end
---@diagnostic disable-next-line: duplicate-set-field
function io.lines(fn)
local fi, err, fn2 = io.open(fn, nil, 2)
if not fi then error('Error opening file \''..fn2..'\': '..err, 2) end
return fi:lines()
local fi, err, fn2 = io.open(fn, nil, 2)
if not fi then error('Error opening file \'' .. fn2 .. '\': ' .. err, 2) end
return fi:lines()
end
---@diagnostic disable-next-line: duplicate-set-field
function io.type(f)
---@diagnostic disable-next-line: undefined-field
if type(f)=='table' and f._is_file then
---@diagnostic disable-next-line: undefined-field
return f._is_open and 'file' or 'closed file'
else
return _bllua_io_type(f)
end
---@diagnostic disable-next-line: undefined-field
if type(f) == 'table' and f._is_file then
---@diagnostic disable-next-line: undefined-field
return f._is_open and 'file' or 'closed file'
else
return _bllua_io_type(f)
end
end
-- provide dofile
function dofile(fn, errn)
errn = errn or 1
local fi, err, fn2 = io.open(fn, 'r', errn+1)
if not fi then error('Error executing file \''..fn2..'\': '..err, errn+1) end
print('Executing '..fn2)
local text = fi:read('*a')
fi:close()
return assert(loadstring('--[['..fn2..']]'..text))()
errn = errn or 1
local fi, err, fn2 = io.open(fn, 'r', errn + 1)
if not fi then error('Error executing file \'' .. fn2 .. '\': ' .. err, errn + 1) end
print('Executing ' .. fn2)
local text = fi:read('*a')
fi:close()
return assert(loadstring('--[[' .. fn2 .. ']]' .. text))()
end
-- provide require (just a wrapper for dofile)
@@ -165,63 +170,67 @@ end
-- blockland directory
-- current add-on
local function file_exists(fn, errn)
local fi, err, fn2 = io.open(fn, 'r', errn+1)
if fi then
fi:close()
return fn2
else
return nil
end
local fi, err, fn2 = io.open(fn, 'r', errn + 1)
if fi then
fi:close()
return fn2
else
return nil
end
end
local require_memo = {}
function require(mod)
if require_memo[mod] then return unpack(require_memo[mod]) end
local fp = mod:gsub('%.', '/')
local fns = {
'./'..fp..'.lua', -- local file
'./'..fp..'/init.lua', -- local library
fp..'.lua', -- global file
fp..'/init.lua', -- global library
}
if fp:lower():find('^add-ons/') then
local addonpath = fp:lower():match('^add-ons/[^/]+')..'/'
table.insert(fns, addonpath..fp..'.lua') -- add-on file
table.insert(fns, addonpath..fp..'/init.lua') -- add-on library
end
for _,fn in ipairs(fns) do
local fne = file_exists(fn, 2)
if fne then
local res = {dofile(fne, 2)}
require_memo[mod] = res
return unpack(res)
end
end
return _bllua_requiresecure(mod)
if require_memo[mod] then return unpack(require_memo[mod]) end
local fp = mod:gsub('%.', '/')
local fns = {
'./' .. fp .. '.lua', -- local file
'./' .. fp .. '/init.lua', -- local library
fp .. '.lua', -- global file
fp .. '/init.lua', -- global library
}
if fp:lower():find('^add-ons/') then
local addonpath = fp:lower():match('^add-ons/[^/]+') .. '/'
table.insert(fns, addonpath .. fp .. '.lua') -- add-on file
table.insert(fns, addonpath .. fp .. '/init.lua') -- add-on library
end
for _, fn in ipairs(fns) do
local fne = file_exists(fn, 2)
if fne then
local res = { dofile(fne, 2) }
require_memo[mod] = res
return unpack(res)
end
end
return _bllua_requiresecure(mod)
end
-- Exposure to TS
function _bllua_getvar(name) return _G[name] end
function _bllua_setvar(name, val) _G[name] = val end
function _bllua_eval(code) return loadstring(code)() end
function _bllua_exec(fn) return dofile(fn, 2) end
local function isValidCode(code)
local f,e = loadstring(code)
return f~=nil
local f, e = loadstring(code)
return f ~= nil
end
function _bllua_smarteval(code)
if (not code:find('^print%(')) and isValidCode('print('..code..')') then
code = 'print('..code..')' end
local f,e = loadstring(code)
if f then
return f()
else
print(e)
end
if (not code:find('^print%(')) and isValidCode('print(' .. code .. ')') then
code = 'print(' .. code .. ')'
end
local f, e = loadstring(code)
if f then
return f()
else
print(e)
end
end
function ts.setvar(name, val)
_bllua_ts.call('_bllua_set_var', name, val)
_bllua_ts.call('_bllua_set_var', name, val)
end
_bllua_ts.call('echo', ' Executed libts-lua.lua')

555
src/util/std.lua
View File

@@ -1,347 +1,374 @@
-- Basic functionality that should be standard in Lua
-- Table / List
-- Whether a table contains no keys
function table.empty(t)
return next(t)~=nil
return next(t) ~= nil
end
-- Apply a function to each key in a table
function table.map(f, ...)
local ts = {...}
local u = {}
for k,_ in pairs(ts[1]) do
local args = {}
for j=1,#ts do args[j] = ts[j][i] end
u[i] = f(unpack(args))
end
return u
local ts = { ... }
local u = {}
for k, _ in pairs(ts[1]) do
local args = {}
for j = 1, #ts do args[j] = ts[j][i] end
u[i] = f(unpack(args))
end
return u
end
function table.map_list(f, ...)
local ts = {...}
local u = {}
for i=1,#ts[1] do
local args = {}
for j=1,#ts do args[j] = ts[j][i] end
u[i] = f(unpack(args))
end
return u
local ts = { ... }
local u = {}
for i = 1, #ts[1] do
local args = {}
for j = 1, #ts do args[j] = ts[j][i] end
u[i] = f(unpack(args))
end
return u
end
-- Swap keys/values
function table.swap(t)
local u = {}
for k,v in pairs(t) do u[v] = k end
return u
local u = {}
for k, v in pairs(t) do u[v] = k end
return u
end
-- Reverse a list
function table.reverse(l)
local m = {}
for i=1,#l do m[#l-i+1] = l[i] end
return m
local m = {}
for i = 1, #l do m[#l - i + 1] = l[i] end
return m
end
-- Whether a table is a list/array (has only monotonic integer keys)
function table.islist(t)
local n = 0
for i,_ in pairs(t) do
if type(i)~='number' or i%1~=0 then return false end
n = n+1
end
return n==#t
local n = 0
for i, _ in pairs(t) do
if type(i) ~= 'number' or i % 1 ~= 0 then return false end
n = n + 1
end
return n == #t
end
-- Append contents of other tables to first table
function table.append(t, ...)
local a = {...}
for _,u in ipairs(a) do
for _,v in ipairs(u) do table.insert(t,v) end
end
return t
local a = { ... }
for _, u in ipairs(a) do
for _, v in ipairs(u) do table.insert(t, v) end
end
return t
end
-- Create a new table containing all keys from any number of tables
-- latter tables in the arg list override prior ones
-- overlaps, NOT appends, integer keys
function table.join(...)
local ts = {...}
local w = {}
for _,t in ipairs(ts) do
for k,v in pairs(t) do w[k] = v end
end
return w
local ts = { ... }
local w = {}
for _, t in ipairs(ts) do
for k, v in pairs(t) do w[k] = v end
end
return w
end
-- Whether a table contains a certain value in any key
function table.contains(t,s)
for _,v in pairs(t) do
if v==s then return true end
end
return false
function table.contains(t, s)
for _, v in pairs(t) do
if v == s then return true end
end
return false
end
function table.contains_list(t,s)
for _,v in ipairs(t) do
if v==s then return true end
end
return false
function table.contains_list(t, s)
for _, v in ipairs(t) do
if v == s then return true end
end
return false
end
-- Copy a table to another table
function table.copy(t)
local u = {}
for k,v in pairs(t) do u[k] = v end
return u
local u = {}
for k, v in pairs(t) do u[k] = v end
return u
end
function table.copy_list(l)
local m = {}
for i,v in ipairs(l) do m[i] = v end
return m
local m = {}
for i, v in ipairs(l) do m[i] = v end
return m
end
-- Sort a table in a new copy
function table.sortcopy(t, f)
local u = table.copy_list(t)
table.sort(u, f)
return u
local u = table.copy_list(t)
table.sort(u, f)
return u
end
-- Remove a value from a table
function table.removevalue(t, r)
local rem = {}
for k,v in pairs(t) do
if v==r then table.insert(rem, k) end
end
for _,k in ipairs(rem) do t[k] = nil end
local rem = {}
for k, v in pairs(t) do
if v == r then table.insert(rem, k) end
end
for _, k in ipairs(rem) do t[k] = nil end
end
function table.removevalue_list(t, r)
for i = #t, 1, -1 do
if t[i]==r then
table.remove(t, i)
end
end
for i = #t, 1, -1 do
if t[i] == r then
table.remove(t, i)
end
end
end
-- Export tables into formatted executable strings
local function tabs(tabLevel)
return (' '):rep(tabLevel)
return (' '):rep(tabLevel)
end
local valueToString
local function tableToString(t, tabLevel, seen)
if type(t)~='table' or (getmetatable(t) and getmetatable(t).__tostring) then
return tostring(t)
elseif table.islist(t) then
if #t==0 then
return '{}'
else
local strs = {}
local containsTables = false
for _,v in ipairs(t) do
if type(v)=='table' then containsTables = true end
table.insert(strs, valueToString(v, tabLevel+1, seen)..',')
end
if containsTables or #t>3 then
return '{\n'..tabs(tabLevel+1)
..table.concat(strs, '\n'..tabs(tabLevel+1))
..'\n'..tabs(tabLevel)..'}'
else
return '{ '..table.concat(strs, ' ')..' }'
end
end
else
local containsNonStringKeys = false
for k,v in pairs(t) do
if type(k)~='string' or k:find('[^a-zA-Z0-9_]') then
containsNonStringKeys = true
elseif type(k)=='table' then
error('table.tostring: table contains a table as key, cannot serialize')
end
end
local strs = {}
if containsNonStringKeys then
for k,v in pairs(t) do
table.insert(strs, '\n'..tabs(tabLevel+1)
..'['..valueToString(k, tabLevel+1, seen)..'] = '
..valueToString(v, tabLevel+1, seen)..',')
end
else
for k,v in pairs(t) do
table.insert(strs, '\n'..tabs(tabLevel+1)
..k..' = '..valueToString(v, tabLevel+1, seen)..',')
end
end
return '{'..table.concat(strs)..'\n'..tabs(tabLevel)..'}'
end
if type(t) ~= 'table' or (getmetatable(t) and getmetatable(t).__tostring) then
return tostring(t)
elseif table.islist(t) then
if #t == 0 then
return '{}'
else
local strs = {}
local containsTables = false
for _, v in ipairs(t) do
if type(v) == 'table' then containsTables = true end
table.insert(strs, valueToString(v, tabLevel + 1, seen) .. ',')
end
if containsTables or #t > 3 then
return '{\n' .. tabs(tabLevel + 1)
.. table.concat(strs, '\n' .. tabs(tabLevel + 1))
.. '\n' .. tabs(tabLevel) .. '}'
else
return '{ ' .. table.concat(strs, ' ') .. ' }'
end
end
else
local containsNonStringKeys = false
for k, v in pairs(t) do
if type(k) ~= 'string' or k:find('[^a-zA-Z0-9_]') then
containsNonStringKeys = true
elseif type(k) == 'table' then
error('table.tostring: table contains a table as key, cannot serialize')
end
end
local strs = {}
if containsNonStringKeys then
for k, v in pairs(t) do
table.insert(strs, '\n' .. tabs(tabLevel + 1)
.. '[' .. valueToString(k, tabLevel + 1, seen) .. '] = '
.. valueToString(v, tabLevel + 1, seen) .. ',')
end
else
for k, v in pairs(t) do
table.insert(strs, '\n' .. tabs(tabLevel + 1)
.. k .. ' = ' .. valueToString(v, tabLevel + 1, seen) .. ',')
end
end
return '{' .. table.concat(strs) .. '\n' .. tabs(tabLevel) .. '}'
end
end
valueToString = function(v, tabLevel, seen)
local t = type(v)
if t=='table' then
if seen[v] then
return 'nil --[[ already seen: '..tostring(v)..' ]]'
else
seen[v] = true
return tableToString(v, tabLevel, seen)
end
elseif t=='string' then
return '\''..string.escape(v)..'\''
elseif t=='number' or t=='boolean' then
return tostring(v)
else
--error('table.tostring: table contains a '..t..' value, cannot serialize')
return 'nil --[[ cannot serialize '..t..': '..tostring(v)..' ]]'
end
local t = type(v)
if t == 'table' then
if seen[v] then
return 'nil --[[ already seen: ' .. tostring(v) .. ' ]]'
else
seen[v] = true
return tableToString(v, tabLevel, seen)
end
elseif t == 'string' then
return '\'' .. string.escape(v) .. '\''
elseif t == 'number' or t == 'boolean' then
return tostring(v)
else
--error('table.tostring: table contains a '..t..' value, cannot serialize')
return 'nil --[[ cannot serialize ' .. t .. ': ' .. tostring(v) .. ' ]]'
end
end
function table.tostring(t)
return tableToString(t, 0, {})
return tableToString(t, 0, {})
end
-- String
-- Split string into table by separator
-- or by chars if no separator given
-- if regex is not true, sep is treated as a regex pattern
function string.split(str, sep, noregex)
if type(str)~='string' then
error('string.split: argument #1: expected string, got '..type(str), 2) end
if sep==nil or sep=='' then
local t = {}
local ns = #str
for x = 1, ns do
table.insert(t, str:sub(x, x))
end
return t
elseif type(sep)=='string' then
local t = {}
if #str>0 then
local first = 1
while true do
local last, newfirst = str:find(sep, first, noregex)
if not last then break end
table.insert(t, str:sub(first, last-1))
first = newfirst+1
end
table.insert(t, str:sub(first, #str))
end
return t
else
error(
'string.split: argument #2: expected string or nil, got '..type(sep), 2)
end
end
-- Split string to a list of char bytes
function string.bytes(s)
local b = {}
for i=1,#s do
local c = s:sub(i,i)
table.insert(b, c:byte())
end
return b
end
-- Trim leading and trailing whitespace
function string.trim(s, ws)
ws = ws or ' \t\r\n'
return s:gsub('^['..ws..']+', ''):gsub('['..ws..']+$', '')..''
end
-- String slicing and searching using [] operator
local str_meta = getmetatable('')
local str_meta_index_old= str_meta.__index
function str_meta.__index(s,k)
if type(k)=='string' then
return str_meta_index_old[k]
elseif type(k)=='number' then
if k<0 then k = #s+k+1 end
return string.sub(s,k,k)
elseif type(k)=='table' then
local a = k[1]<0 and (#s+k[1]+1) or k[1]
local b = k[2]<0 and (#s+k[2]+1) or k[2]
return string.sub(s,a,b)
end
end
-- String iterator
function string.chars(s)
local i = 0
return function()
i = i+1
if i<=#s then return s:sub(i,i)
else return nil end
end
end
-- Escape sequences
local defaultEscapes = {
['\\'] = '\\\\',
['\''] = '\\\'',
['\"'] = '\\\"',
['\t'] = '\\t',
['\r'] = '\\r',
['\n'] = '\\n',
['\0'] = '\\0',
}
function string.escape(s, escapes)
escapes = escapes or defaultEscapes
local t = {}
for i=1,#s do
local c = s:sub(i,i)
table.insert(t, escapes[c] or c)
end
return table.concat(t)
end
local defaultEscapeChar = '\\'
local defaultUnescapes = {
['\\'] = '\\',
['\''] = '\'',
['\"'] = '\"',
['t'] = '\t',
['r'] = '\r',
['n'] = '\n',
['0'] = '\0',
}
function string.unescape(s, escapeChar, unescapes)
escapeChar = escapeChar or defaultEscapeChar
unescapes = unescapes or defaultUnescapes
local t = {}
local inEscape = false
for i=1,#s do
local c = s:sub(i,i)
if inEscape then
table.insert(t, unescapes[c]
or error('string.unescape: invalid escape sequence: \''
..escapeChar..c..'\''))
elseif c==escapeChar then
inEscape = true
else
table.insert(t, c)
end
end
return table.concat(t)
if type(str) ~= 'string' then
error('string.split: argument #1: expected string, got ' .. type(str), 2)
end
if sep == nil or sep == '' then
local t = {}
local ns = #str
for x = 1, ns do
table.insert(t, str:sub(x, x))
end
return t
elseif type(sep) == 'string' then
local t = {}
if #str > 0 then
local first = 1
while true do
local last, newfirst = str:find(sep, first, noregex)
if not last then break end
table.insert(t, str:sub(first, last - 1))
first = newfirst + 1
end
table.insert(t, str:sub(first, #str))
end
return t
else
error(
'string.split: argument #2: expected string or nil, got ' .. type(sep), 2)
end
end
-- Split string to a list of char bytes
function string.bytes(s)
local b = {}
for i = 1, #s do
local c = s:sub(i, i)
table.insert(b, c:byte())
end
return b
end
-- Trim leading and trailing whitespace
function string.trim(s, ws)
ws = ws or ' \t\r\n'
return s:gsub('^[' .. ws .. ']+', ''):gsub('[' .. ws .. ']+$', '') .. ''
end
-- String slicing and searching using [] operator
local str_meta = getmetatable('')
local str_meta_index_old = str_meta.__index
function str_meta.__index(s, k)
if type(k) == 'string' then
return str_meta_index_old[k]
elseif type(k) == 'number' then
if k < 0 then k = #s + k + 1 end
return string.sub(s, k, k)
elseif type(k) == 'table' then
local a = k[1] < 0 and (#s + k[1] + 1) or k[1]
local b = k[2] < 0 and (#s + k[2] + 1) or k[2]
return string.sub(s, a, b)
end
end
-- String iterator
function string.chars(s)
local i = 0
return function()
i = i + 1
if i <= #s then
return s:sub(i, i)
else
return nil
end
end
end
-- Escape sequences
local defaultEscapes = {
['\\'] = '\\\\',
['\''] = '\\\'',
['\"'] = '\\\"',
['\t'] = '\\t',
['\r'] = '\\r',
['\n'] = '\\n',
['\0'] = '\\0',
}
function string.escape(s, escapes)
escapes = escapes or defaultEscapes
local t = {}
for i = 1, #s do
local c = s:sub(i, i)
table.insert(t, escapes[c] or c)
end
return table.concat(t)
end
local defaultEscapeChar = '\\'
local defaultUnescapes = {
['\\'] = '\\',
['\''] = '\'',
['\"'] = '\"',
['t'] = '\t',
['r'] = '\r',
['n'] = '\n',
['0'] = '\0',
}
function string.unescape(s, escapeChar, unescapes)
escapeChar = escapeChar or defaultEscapeChar
unescapes = unescapes or defaultUnescapes
local t = {}
local inEscape = false
for i = 1, #s do
local c = s:sub(i, i)
if inEscape then
table.insert(t, unescapes[c]
or error('string.unescape: invalid escape sequence: \''
.. escapeChar .. c .. '\''))
elseif c == escapeChar then
inEscape = true
else
table.insert(t, c)
end
end
return table.concat(t)
end
-- IO
io = io or {}
-- Read entire file at once, return nil,err if access failed
function io.readall(filename)
local fi,err = io.open(filename, 'rb')
if not fi then return nil,err end
local s = fi:read("*a")
fi:close()
return s
end
-- Write data to file all at once, return true if success / false,err if failure
function io.writeall(filename, data)
local fi,err = io.open(filename, 'wb')
if not fi then return false,err end
fi:write(data)
fi:close()
return true,nil
local fi, err = io.open(filename, 'rb')
if not fi then return nil, err end
local s = fi:read("*a")
fi:close()
return s
end
-- Write data to file all at once, return true if success / false,err if failure
function io.writeall(filename, data)
local fi, err = io.open(filename, 'wb')
if not fi then return false, err end
fi:write(data)
fi:close()
return true, nil
end
-- Math
-- Round
function math.round(x)
return math.floor(x+0.5)
return math.floor(x + 0.5)
end
-- Mod that accounts for floating point inaccuracy
function math.mod(a,b)
local m = a%b
if m==0 or math.abs(m)<1e-15 or math.abs(m-b)<1e-15 then return 0
else return m end
function math.mod(a, b)
local m = a % b
if m == 0 or math.abs(m) < 1e-15 or math.abs(m - b) < 1e-15 then
return 0
else
return m
end
end
-- Clamp value between min and max
function math.clamp(v, n, x)
return math.min(x, math.max(v, n))
return math.min(x, math.max(v, n))
end

413
src/util/vector.lua
View File

@@ -1,218 +1,237 @@
-- Vector math class with operators
local vector_meta
local vector_new
local function vector_check(v, n, name, argn)
if not v.__is_vector then
error('vector '..name..': argument #'..(argn or 1)
..': expected vector, got '..type(v), n+1) end
if not v.__is_vector then
error('vector ' .. name .. ': argument #' .. (argn or 1)
.. ': expected vector, got ' .. type(v), n + 1)
end
end
local function vector_checksamelen(v1, v2, name)
vector_check(v1, 3, name, 1)
vector_check(v2, 3, name, 2)
if #v1~=#v2 then
error('vector '..name..': vector lengths do not match (lengths are '
..#v1..' and '..#v2..')', 3) end
return #v1
vector_check(v1, 3, name, 1)
vector_check(v2, 3, name, 2)
if #v1 ~= #v2 then
error('vector ' .. name .. ': vector lengths do not match (lengths are '
.. #v1 .. ' and ' .. #v2 .. ')', 3)
end
return #v1
end
local function vector_checklen(v1, v2, name, len)
vector_check(v1, 3, name, 1)
vector_check(v2, 3, name, 2)
if #v1~=len or #v2~=len then
error('vector '..name..': vector lengths are not '..len..' (lengths are '
..#v1..' and '..#v2..')', 3) end
vector_check(v1, 3, name, 1)
vector_check(v2, 3, name, 2)
if #v1 ~= len or #v2 ~= len then
error('vector ' .. name .. ': vector lengths are not ' .. len .. ' (lengths are '
.. #v1 .. ' and ' .. #v2 .. ')', 3)
end
end
local function vector_opnnn(name, op)
return function(v1, v2)
local len = vector_checksamelen(v1, v2, name)
local v3 = {}
for i = 1, len do
v3[i] = op(v1[i], v2[i])
end
return vector_new(v3)
end
return function(v1, v2)
local len = vector_checksamelen(v1, v2, name)
local v3 = {}
for i = 1, len do
v3[i] = op(v1[i], v2[i])
end
return vector_new(v3)
end
end
local function vector_opnxn(name, op)
return function(v1, v2)
local v1v = type(v1)=='table' and v1.__is_vector
local v2v = type(v2)=='table' and v2.__is_vector
if v1v and v2v then
local len = vector_checksamelen(v1, v2, name)
local v3 = {}
for i = 1, len do
v3[i] = op(v1[i], v2[i])
end
return vector_new(v3)
else
if v2v then v1,v2 = v2,v1 end
local len = #v1
local v3 = {}
for i = 1, len do
v3[i] = op(v1[i], v2)
end
return vector_new(v3)
end
end
return function(v1, v2)
local v1v = type(v1) == 'table' and v1.__is_vector
local v2v = type(v2) == 'table' and v2.__is_vector
if v1v and v2v then
local len = vector_checksamelen(v1, v2, name)
local v3 = {}
for i = 1, len do
v3[i] = op(v1[i], v2[i])
end
return vector_new(v3)
else
if v2v then v1, v2 = v2, v1 end
local len = #v1
local v3 = {}
for i = 1, len do
v3[i] = op(v1[i], v2)
end
return vector_new(v3)
end
end
end
local function vector_opn0n(name, op)
return function(v1)
--vector_check(v1, 1, name)
local len = #v1
local v2 = {}
for i = 1, len do
v2[i] = op(v1[i])
end
return vector_new(v2)
end
return function(v1)
--vector_check(v1, 1, name)
local len = #v1
local v2 = {}
for i = 1, len do
v2[i] = op(v1[i])
end
return vector_new(v2)
end
end
local vector_indices = {x = 1, y = 2, z = 3, w = 4, r = 1, g = 2, b = 3, a = 4}
local vector_indices = { x = 1, y = 2, z = 3, w = 4, r = 1, g = 2, b = 3, a = 4 }
local vector_meta = {
__is_vector = true,
__index = function(t, k)
if tonumber(k) then return rawget(t, k)
elseif vector_indices[k] then return rawget(t, vector_indices[k])
else return getmetatable(t)[k]
end
end,
__newindex = function(t, k, v)
if tonumber(k) then rawset(t, k, v)
elseif vector_indices[k] then rawset(t, vector_indices[k], v)
else return
end
end,
__add = vector_opnnn('add', function(x1, x2) return x1+x2 end),
__sub = vector_opnnn('sub', function(x1, x2) return x1-x2 end),
__mul = vector_opnxn('mul', function(x1, x2) return x1*x2 end),
__div = vector_opnxn('div', function(x1, x2) return x1/x2 end),
__pow = vector_opnxn('pow', function(x1, x2) return x1^x2 end),
__unm = vector_opn0n('inv', function(x1) return -x1 end),
__concat = nil,
--__len = function(v1) return #v1 end,
__len = nil,
__eq = function(v1, v2)
local len = vector_checksamelen(v1, v2, 'equals')
for i = 1, len do
if v1[i]~=v2[i] then return false end
end
return true
end,
__lt = nil,
__le = nil,
__call = nil,
abs = vector_opn0n('abs', math.abs),
length = function(v1)
--vector_check(v1, 2, 'length')
local len = #v1
local l = 0
for i = 1, len do
l = l + v1[i]^2
end
return math.sqrt(l)
end,
normalize = function(v1)
--vector_check(v1, 2, 'normal')
local length = v1:length()
local len = #v1
local v3 = {}
for i = 1, len do
if length==0 then v3[i] = 0
else v3[i] = v1[i]/length end
end
return vector_new(v3)
end,
__tostring = function(v1)
--vector_check(v1, 2, 'tostring')
local st = {}
local len = #v1
for i = 1, len do
table.insert(st, tostring(v1[i]))
end
return 'vector{ '..table.concat(st, ', ')..' }'
end,
unpack = function(v1) return unpack(v1) end,
floor = vector_opn0n('floor', function(x1) return math.floor(x1) end),
ceil = vector_opn0n('ceil' , function(x1) return math.ceil (x1) end),
round = vector_opn0n('round', function(x1) return math.floor(x1+0.5) end),
dot = function(v1, v2)
local len = vector_checksamelen(v1, v2, 'dot')
local x = 0
for i = 1, len do
x = x + v1[i]*v2[i]
end
return x
end,
cross = function(v1, v2)
vector_checklen(v1, v2, 'cross', 3)
return vector_new{
v1[2]*v2[3] - v1[3]*v2[2],
v1[3]*v2[1] - v1[1]*v2[3],
v1[1]*v2[2] - v1[2]*v2[1],
}
end,
rotateByAngleId = function(v1, r)
--vector_check(v1, 2, 'rotate')
if type(r)~='number' or r%1~=0 then
error('vector rotateByAngleId: invalid rotation '..tostring(r), 2) end
r = r%4
local v2
if r==0 then v2 = vector_new{ v1[1], v1[2], v1[3] }
elseif r==1 then v2 = vector_new{ v1[2], -v1[1], v1[3] }
elseif r==2 then v2 = vector_new{ -v1[1], -v1[2], v1[3] }
elseif r==3 then v2 = vector_new{ -v1[2], v1[1], v1[3] }
else error('vector rotateByAngleId: invalid rotation '..r, 2) end
return v2
end,
rotateZ = function(v, r)
--vector_check(v, 2, 'rotate2d')
if type(r)~='number' then
error('vector rotateZ: invalid rotation '..tostring(r), 2) end
local len = math.sqrt(v[1]^2 + v[2]^2)
local ang = math.atan2(v[2], v[1]) + r
local v2 = vector_new{ math.cos(ang)*len, math.sin(ang)*len }
return v2
end,
tsString = function(v)
--vector_check(v, 2, 'tsString')
return table.concat(v, ' ')
end,
distance = function(v1, v2)
local len = vector_checksamelen(v1, v2, 'distance')
local sum = 0
for i=1,len do
sum = sum + (v1[i] - v2[i])^2
end
return math.sqrt(sum)
end,
copy = function(v)
--vector_check(v, 2, 'copy')
return vector_new(v)
end,
__is_vector = true,
__index = function(t, k)
if tonumber(k) then
return rawget(t, k)
elseif vector_indices[k] then
return rawget(t, vector_indices[k])
else
return getmetatable(t)[k]
end
end,
__newindex = function(t, k, v)
if tonumber(k) then
rawset(t, k, v)
elseif vector_indices[k] then
rawset(t, vector_indices[k], v)
else
return
end
end,
__add = vector_opnnn('add', function(x1, x2) return x1 + x2 end),
__sub = vector_opnnn('sub', function(x1, x2) return x1 - x2 end),
__mul = vector_opnxn('mul', function(x1, x2) return x1 * x2 end),
__div = vector_opnxn('div', function(x1, x2) return x1 / x2 end),
__pow = vector_opnxn('pow', function(x1, x2) return x1 ^ x2 end),
__unm = vector_opn0n('inv', function(x1) return -x1 end),
__concat = nil,
--__len = function(v1) return #v1 end,
__len = nil,
__eq = function(v1, v2)
local len = vector_checksamelen(v1, v2, 'equals')
for i = 1, len do
if v1[i] ~= v2[i] then return false end
end
return true
end,
__lt = nil,
__le = nil,
__call = nil,
abs = vector_opn0n('abs', math.abs),
length = function(v1)
--vector_check(v1, 2, 'length')
local len = #v1
local l = 0
for i = 1, len do
l = l + v1[i] ^ 2
end
return math.sqrt(l)
end,
normalize = function(v1)
--vector_check(v1, 2, 'normal')
local length = v1:length()
local len = #v1
local v3 = {}
for i = 1, len do
if length == 0 then
v3[i] = 0
else
v3[i] = v1[i] / length
end
end
return vector_new(v3)
end,
__tostring = function(v1)
--vector_check(v1, 2, 'tostring')
local st = {}
local len = #v1
for i = 1, len do
table.insert(st, tostring(v1[i]))
end
return 'vector{ ' .. table.concat(st, ', ') .. ' }'
end,
unpack = function(v1) return unpack(v1) end,
floor = vector_opn0n('floor', function(x1) return math.floor(x1) end),
ceil = vector_opn0n('ceil', function(x1) return math.ceil(x1) end),
round = vector_opn0n('round', function(x1) return math.floor(x1 + 0.5) end),
dot = function(v1, v2)
local len = vector_checksamelen(v1, v2, 'dot')
local x = 0
for i = 1, len do
x = x + v1[i] * v2[i]
end
return x
end,
cross = function(v1, v2)
vector_checklen(v1, v2, 'cross', 3)
return vector_new {
v1[2] * v2[3] - v1[3] * v2[2],
v1[3] * v2[1] - v1[1] * v2[3],
v1[1] * v2[2] - v1[2] * v2[1],
}
end,
rotateByAngleId = function(v1, r)
--vector_check(v1, 2, 'rotate')
if type(r) ~= 'number' or r % 1 ~= 0 then
error('vector rotateByAngleId: invalid rotation ' .. tostring(r), 2)
end
r = r % 4
local v2
if r == 0 then
v2 = vector_new { v1[1], v1[2], v1[3] }
elseif r == 1 then
v2 = vector_new { v1[2], -v1[1], v1[3] }
elseif r == 2 then
v2 = vector_new { -v1[1], -v1[2], v1[3] }
elseif r == 3 then
v2 = vector_new { -v1[2], v1[1], v1[3] }
else
error('vector rotateByAngleId: invalid rotation ' .. r, 2)
end
return v2
end,
rotateZ = function(v, r)
--vector_check(v, 2, 'rotate2d')
if type(r) ~= 'number' then
error('vector rotateZ: invalid rotation ' .. tostring(r), 2)
end
local len = math.sqrt(v[1] ^ 2 + v[2] ^ 2)
local ang = math.atan2(v[2], v[1]) + r
local v2 = vector_new { math.cos(ang) * len, math.sin(ang) * len }
return v2
end,
tsString = function(v)
--vector_check(v, 2, 'tsString')
return table.concat(v, ' ')
end,
distance = function(v1, v2)
local len = vector_checksamelen(v1, v2, 'distance')
local sum = 0
for i = 1, len do
sum = sum + (v1[i] - v2[i]) ^ 2
end
return math.sqrt(sum)
end,
copy = function(v)
--vector_check(v, 2, 'copy')
return vector_new(v)
end,
}
vector_new = function(vi)
if vi then
if type(vi)=='string' then
local vi2 = {}
for val in vi:gmatch('[0-9%.%-e]+') do
table.insert(vi2, tonumber(val))
end
vi = vi2
elseif type(vi)~='table' then
error('vector: argument #1: expected input table, got '..type(vi), 2)
end
local v = {}
if #vi>0 then
for i = 1, #vi do v[i] = vi[i] end
else
for n, i in pairs(vector_indices) do v[i] = vi[n] end
if #v==0 then
error('vector: argument #1: table contains no values', 2)
end
end
setmetatable(v, vector_meta)
return v
else
error('vector: argument #1: expected input table, got nil', 2)
end
if vi then
if type(vi) == 'string' then
local vi2 = {}
for val in vi:gmatch('[0-9%.%-e]+') do
table.insert(vi2, tonumber(val))
end
vi = vi2
elseif type(vi) ~= 'table' then
error('vector: argument #1: expected input table, got ' .. type(vi), 2)
end
local v = {}
if #vi > 0 then
for i = 1, #vi do v[i] = vi[i] end
else
for n, i in pairs(vector_indices) do v[i] = vi[n] end
if #v == 0 then
error('vector: argument #1: table contains no values', 2)
end
end
setmetatable(v, vector_meta)
return v
else
error('vector: argument #1: expected input table, got nil', 2)
end
end
vector = vector_new