1 files changed, 0 insertions, 154 deletions

diff --git a/etc/tftp.lua b/etc/tftp.lua
deleted file mode 100644
index ed99cd1..0000000
--- a/etc/tftp.lua
+++ /dev/null
@@ -1,154 +0,0 @@
------------------------------------------------------------------------------
--- TFTP support for the Lua language
--- LuaSocket toolkit.
--- Author: Diego Nehab
------------------------------------------------------------------------------
-
------------------------------------------------------------------------------
--- Load required files
------------------------------------------------------------------------------
-local base = _G
-local table = require("table")
-local math = require("math")
-local string = require("string")
-local socket = require("socket")
-local ltn12 = require("ltn12")
-local url = require("socket.url")
-module("socket.tftp")
-
------------------------------------------------------------------------------
--- Program constants
------------------------------------------------------------------------------
-local char = string.char
-local byte = string.byte
-
-PORT = 69
-local OP_RRQ = 1
-local OP_WRQ = 2
-local OP_DATA = 3
-local OP_ACK = 4
-local OP_ERROR = 5
-local OP_INV = {"RRQ", "WRQ", "DATA", "ACK", "ERROR"}
-
------------------------------------------------------------------------------
--- Packet creation functions
------------------------------------------------------------------------------
-local function RRQ(source, mode)
-    return char(0, OP_RRQ) .. source .. char(0) .. mode .. char(0)
-end
-
-local function WRQ(source, mode)
-    return char(0, OP_RRQ) .. source .. char(0) .. mode .. char(0)
-end
-
-local function ACK(block)
-    local low, high
-    low = math.mod(block, 256)
-    high = (block - low)/256
-    return char(0, OP_ACK, high, low)
-end
-
-local function get_OP(dgram)
-    local op = byte(dgram, 1)*256 + byte(dgram, 2)
-    return op
-end
-
------------------------------------------------------------------------------
--- Packet analysis functions
------------------------------------------------------------------------------
-local function split_DATA(dgram)
-    local block = byte(dgram, 3)*256 + byte(dgram, 4)
-    local data = string.sub(dgram, 5)
-    return block, data
-end
-
-local function get_ERROR(dgram)
-    local code = byte(dgram, 3)*256 + byte(dgram, 4)
-    local msg
-    _,_, msg = string.find(dgram, "(.*)\000", 5)
-    return string.format("error code %d: %s", code, msg)
-end
-
------------------------------------------------------------------------------
--- The real work
------------------------------------------------------------------------------
-local function tget(gett)
-    local retries, dgram, sent, datahost, dataport, code
-    local last = 0
-    socket.try(gett.host, "missing host")
-    local con = socket.try(socket.udp())
-    local try = socket.newtry(function() con:close() end)
-    -- convert from name to ip if needed
-    gett.host = try(socket.dns.toip(gett.host))
-    con:settimeout(1)
-    -- first packet gives data host/port to be used for data transfers
-    local path = string.gsub(gett.path or "", "^/", "")
-    path = url.unescape(path)
-    retries = 0
-    repeat
-        sent = try(con:sendto(RRQ(path, "octet"), gett.host, gett.port))
-        dgram, datahost, dataport = con:receivefrom()
-        retries = retries + 1
-    until dgram or datahost ~= "timeout" or retries > 5
-    try(dgram, datahost)
-    -- associate socket with data host/port
-    try(con:setpeername(datahost, dataport))
-    -- default sink
-    local sink = gett.sink or ltn12.sink.null()
-    -- process all data packets
-    while 1 do
-        -- decode packet
-        code = get_OP(dgram)
-        try(code ~= OP_ERROR, get_ERROR(dgram))
-        try(code == OP_DATA, "unhandled opcode " .. code)
-        -- get data packet parts
-        local block, data = split_DATA(dgram)
-        -- if not repeated, write
-        if block == last+1 then
-            try(sink(data))
-            last = block
-        end
-        -- last packet brings less than 512 bytes of data
-        if string.len(data) < 512 then
-            try(con:send(ACK(block)))
-            try(con:close())
-            try(sink(nil))
-            return 1
-        end
-        -- get the next packet
-        retries = 0
-        repeat
-            sent = try(con:send(ACK(last)))
-            dgram, err = con:receive()
-            retries = retries + 1
-        until dgram or err ~= "timeout" or retries > 5
-        try(dgram, err)
-    end
-end
-
-local default = {
-    port = PORT,
-    path ="/",
-    scheme = "tftp"
-}
-
-local function parse(u)
-    local t = socket.try(url.parse(u, default))
-    socket.try(t.scheme == "tftp", "invalid scheme '" .. t.scheme .. "'")
-    socket.try(t.host, "invalid host")
-    return t
-end
-
-local function sget(u)
-    local gett = parse(u)
-    local t = {}
-    gett.sink = ltn12.sink.table(t)
-    tget(gett)
-    return table.concat(t)
-end
-
-get = socket.protect(function(gett)
-    if base.type(gett) == "string" then return sget(gett)
-    else return tget(gett) end
-end)
-