/usr/share/lua/5.1/socket.lua is in liblua5.1-socket2 2.0.2-6.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 | -----------------------------------------------------------------------------
-- LuaSocket helper module
-- Author: Diego Nehab
-- RCS ID: $Id: socket.lua,v 1.22 2005/11/22 08:33:29 diego Exp $
-----------------------------------------------------------------------------
-----------------------------------------------------------------------------
-- Declare module and import dependencies
-----------------------------------------------------------------------------
local base = _G
local string = require("string")
local math = require("math")
local socket = require("socket.core")
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)
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
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
end
end
-----------------------------------------------------------------------------
-- Socket sources and sinks, conforming to LTN12
-----------------------------------------------------------------------------
-- create namespaces inside LuaSocket namespace
sourcet = {}
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
})
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
})
end
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
})
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
})
end
sourcet["default"] = sourcet["until-closed"]
source = choose(sourcet)
|