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50 lines
1.4 KiB
Lua
50 lines
1.4 KiB
Lua
description = [[
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Retrieves POP3 email server capabilities.
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POP3 capabilities are defined in RFC 2449. The CAPA command allows a client to
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ask a server what commands it supports and possibly any site-specific policy.
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Besides the list of supported commands, the IMPLEMENTATION string giving the
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server version may be available.
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]]
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---
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-- @output
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-- 110/tcp open pop3
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-- |_ pop3-capabilities: USER CAPA RESP-CODES UIDL PIPELINING STLS TOP SASL(PLAIN)
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author = "Philip Pickering <pgpickering@gmail.com>"
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license = "Same as Nmap--See http://nmap.org/book/man-legal.html"
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categories = {"default"}
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require 'pop3'
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require 'shortport'
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require 'stdnse'
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portrule = shortport.port_or_service({110}, "pop3")
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action = function(host, port)
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local capa = pop3.capabilities(host, port)
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if capa then
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-- Convert the capabilities table into an array of strings.
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local capstrings = {}
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local cap, args
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for cap, args in pairs(capa) do
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local capstr = cap
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if type(args) == "string" then capstr = capstr .. "(" .. args .. ")" end
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if type(args) == "table" then
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local arg
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capstr = capstr .. "("
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for i, arg in ipairs(args) do
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capstr = capstr .. arg .. " "
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end
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capstr = string.sub(capstr, 1, #capstr - 1) .. ")"
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end
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table.insert(capstrings, capstr)
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end
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return stdnse.strjoin(" ", capstrings)
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else
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return "server doesn't support CAPA"
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end
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end
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