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[NSE] Cache the Portmapper list into the NSE registry

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djalal
2010-05-18 01:09:21 +00:00
parent 1cbce9030e
commit 951667ffb4
1 changed files with 24 additions and 15 deletions
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35
nselib/rpc.lua
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@@ -108,7 +108,6 @@ RPC_args = {
["mountd"] = { ver = 'mount.version' },
}
-- Defines the order in which to try to connect to the RPC programs
-- TCP appears to be more stable than UDP in most cases, so try it first
local RPC_PROTOCOLS = (nmap.registry.args and nmap.registry.args[RPC_args['rpcbind'].proto] and
@@ -118,6 +117,9 @@ local RPC_PROTOCOLS = (nmap.registry.args and nmap.registry.args[RPC_args['rpcbi
-- used to cache the contents of the rpc datafile
local RPC_PROGRAMS
-- local mutex to synchronize I/O operations on nmap.registry[host.ip]['portmap']
local mutex = nmap.mutex("rpc")
-- Supported protocol versions
RPC_version = {
["rpcbind"] = { min=2, max=2 },
@@ -1581,7 +1583,9 @@ Helper = {
stdnse.print_debug("rpc.Helper.RpcInfo: %s", result)
return status, result
end
mutex "lock"
status, result = portmap:Dump(comm)
mutex "done"
comm:Disconnect()
if (not(status)) then
stdnse.print_debug("rpc.Helper.RpcInfo: %s", result)
@@ -1800,8 +1804,15 @@ Portmap =
--
Dump = function(self, comm)
local status, data, packet, response, pos, header
if ( self.program_table ) then
return true, self.program_table
local program_table = setmetatable({}, { __mode = 'v' })
if nmap.registry[comm.ip] == nil then
nmap.registry[comm.ip] = {}
end
if nmap.registry[comm.ip]['portmap'] == nil then
nmap.registry[comm.ip]['portmap'] = {}
elseif next(nmap.registry[comm.ip]['portmap']) ~= nil then
return true, nmap.registry[comm.ip]['portmap']
end
packet = comm:EncodePacket( nil, RPC.Procedure[comm.version].DUMP, { type=RPC.AuthType.NULL }, data )
@@ -1842,8 +1853,6 @@ Portmap =
end
end
self.program_table = {}
while true do
local vfollows
local program, version, protocol, port
@@ -1864,18 +1873,18 @@ Portmap =
protocol = "udp"
end
self.program_table[program] = self.program_table[program] or {}
self.program_table[program][protocol] = self.program_table[program][protocol] or {}
self.program_table[program][protocol]["port"] = port
self.program_table[program][protocol]["version"] = self.program_table[program][protocol]["version"] or {}
table.insert( self.program_table[program][protocol]["version"], version )
program_table[program] = program_table[program] or {}
program_table[program][protocol] = program_table[program][protocol] or {}
program_table[program][protocol]["port"] = port
program_table[program][protocol]["version"] = program_table[program][protocol]["version"] or {}
table.insert( program_table[program][protocol]["version"], version )
-- parts of the code rely on versions being in order
-- this way the highest version can be chosen by choosing the last element
table.sort( self.program_table[program][protocol]["version"] )
table.sort( program_table[program][protocol]["version"] )
end
return true, self.program_table
nmap.registry[comm.ip]['portmap'] = program_table
return true, nmap.registry[comm.ip]['portmap']
end,
--- Queries the portmapper for the port of the selected program,