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Properly cache enterprise numbers for snmp-info (was parsing for every target)

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dmiller
2016-06-17 16:11:33 +00:00
parent a57002e760
commit 60a1c85a93
1 changed files with 13 additions and 12 deletions
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25
scripts/snmp-info.nse
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@@ -38,24 +38,25 @@ categories = {"default", "version", "safe"}
portrule = shortport.version_port_or_service(161, "snmp", "udp")
local ENTERPRISE_NUMS
do
local status
status, ENTERPRISE_NUMS = datafiles.parse_file("nselib/data/enterprise_numbers.txt",
{[function(l) return tonumber(l:match("^%d+")) end] = "\t(.*)$"})
if not status then
stdnse.debug1("Couldn't parse enterprise numbers datafile: %s", ENTERPRISE_NUMS)
ENTERPRISE_NUMS = {}
setmetatable(ENTERPRISE_NUMS, {__index = function(i) return "unknown" end})
end
end
-- Lifted from nmap-service-probes:
local SNMPv3GetRequest = "\x30\x3a\x02\x01\x03\x30\x0f\x02\x02\x4a\x69\x02\x03\0\xff\xe3\x04\x01\x04\x02\x01\x03\x04\x10\x30\x0e\x04\0\x02\x01\0\x02\x01\0\x04\0\x04\0\x04\0\x30\x12\x04\0\x04\0\xa0\x0c\x02\x02\x37\xf0\x02\x01\0\x02\x01\0\x30\0"
-- TODO: This should probably check for version 1 and version 2, since those
-- can operate on the same port. Right now it's really just "snmp3-info"
action = function (host, port)
local ENTERPRISE_NUMS = nmap.registry.enterprise_numbers
if not ENTERPRISE_NUMS then
local status
status, ENTERPRISE_NUMS = datafiles.parse_file("nselib/data/enterprise_numbers.txt",
{[function(l) return tonumber(l:match("^%d+")) end] = "\t(.*)$"})
if not status then
stdnse.debug1("Couldn't parse enterprise numbers datafile: %s", ENTERPRISE_NUMS)
ENTERPRISE_NUMS = {}
setmetatable(ENTERPRISE_NUMS, {__index = function(i) return "unknown" end})
end
nmap.registry.enterprise_numbers = ENTERPRISE_NUMS
end
local response
-- Did the service engine already do the hard work?
if port.version and port.version.service_fp then