description = [[
Retrieves IMAP email server capabilities.
IMAP4rev1 capabilities are defined in RFC 3501. The CAPABILITY command
allows a client to ask a server what commands it supports and possibly
any site-specific policy.
]]
---
-- @output
-- 143/tcp open imap
-- |_ imap-capabilities: LOGINDISABLED IDLE IMAP4 LITERAL+ STARTTLS NAMESPACE IMAP4rev1
author = "Brandon Enright"
license = "Same as Nmap--See http://nmap.org/book/man-legal.html"
categories = {"default", "safe"}
require 'imap'
require 'shortport'
require 'stdnse'
portrule = shortport.port_or_service({143}, "imap")
action = function(host, port)
local capa, err = imap.capabilities(host, port)
if type(capa) == "table" then
-- Convert the capabilities table into an array of strings.
local capstrings = {}
local cap, args
for cap, args in pairs(capa) do
table.insert(capstrings, cap)
end
return stdnse.strjoin(" ", capstrings)
elseif type(err) == "string" then
stdnse.print_debug(1, "%s: '%s' for %s", SCRIPT_NAME, err, host.ip)
return
else
return "server doesn't support CAPABILITIES"
end
end
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