2005-11-26 11:16:50 +00:00
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require 'msf/core'
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module Msf
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###
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#
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# This module exposes methods for querying a remote MSSQL service
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#
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###
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module Exploit::Remote::MSSQL
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include Exploit::Remote::Udp
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include Exploit::Remote::Tcp
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#
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# Creates an instance of a MSSQL exploit module.
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#
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def initialize(info = {})
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super
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2006-02-01 22:33:49 +00:00
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# Register the options that all MSSQL exploits may make use of.
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2005-11-26 11:16:50 +00:00
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register_options(
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[
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Opt::RHOST,
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Opt::RPORT(1433),
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2009-10-13 22:24:47 +00:00
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OptString.new('MSSQL_USER', [ false, 'The username to authenticate as', 'sa']),
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OptString.new('MSSQL_PASS', [ false, 'The password for the specified username', ''])
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2005-11-26 11:16:50 +00:00
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], Msf::Exploit::Remote::MSSQL)
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end
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#
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# This method sends a UDP query packet to the server and
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# parses out the reply packet into a hash
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#
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2006-08-13 18:03:28 +00:00
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def mssql_ping(timeout=5)
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2005-11-26 11:16:50 +00:00
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data = { }
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ping_sock = Rex::Socket::Udp.create(
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2006-08-13 18:03:28 +00:00
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'PeerHost' => rhost,
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2005-11-26 11:16:50 +00:00
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'PeerPort' => 1434,
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'Context' =>
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{
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'Msf' => framework,
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'MsfExploit' => self,
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})
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ping_sock.put("\x02")
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2006-08-13 18:03:28 +00:00
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resp, saddr, sport = ping_sock.recvfrom(65535, timeout)
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2005-11-26 11:16:50 +00:00
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ping_sock.close
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return data if not resp
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return data if resp.length == 0
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var = nil
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2006-08-13 18:03:28 +00:00
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return mssql_ping_parse(resp)
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end
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#
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# Parse a 'ping' response and format as a hash
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#
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def mssql_ping_parse(data)
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res = {}
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var = nil
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idx = data.index('ServerName')
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return res if not idx
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data[idx, data.length-idx].split(';').each do |d|
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2005-11-26 11:16:50 +00:00
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if (not var)
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var = d
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else
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2006-08-13 18:03:28 +00:00
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if (var.length > 0)
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res[var] = d
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var = nil
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end
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2005-11-26 11:16:50 +00:00
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end
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2006-08-13 18:03:28 +00:00
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end
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return res
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2005-11-26 11:16:50 +00:00
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end
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#
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# This method connects to the server over TCP and attempts
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# to authenticate with the supplied username and password
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# The global socket is used and left connected after auth
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#
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def mssql_login(user='sa', pass='')
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2009-10-13 22:24:47 +00:00
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disconnect if self.sock
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connect
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2006-08-13 18:03:28 +00:00
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p_hdr =
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"\x02\x00\x02\x00\x00\x00\x02\x00\x00\x00"+
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2005-11-26 11:16:50 +00:00
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"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"+
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"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"+
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"\x00\x00\x00\x00\x00\x00\x00\x00\x00"
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2006-08-13 18:03:28 +00:00
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p_pk2 =
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"\x30\x30\x30\x30\x30\x30\x61\x30\x00\x00"+
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2005-11-26 11:16:50 +00:00
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"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"+
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"\x00\x00\x00\x00\x20\x18\x81\xb8\x2c\x08\x03"+
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"\x01\x06\x0a\x09\x01\x01\x00\x00\x00\x00\x00"+
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"\x00\x00\x00\x00\x73\x71\x75\x65\x6c\x64\x61"+
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"\x20\x31\x2e\x30\x00\x00\x00\x00\x00\x00\x00"+
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"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"+
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"\x00\x0b\x00\x00\x00\x00\x00\x00\x00\x00\x00"+
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"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"+
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"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"+
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"\x00"
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2006-08-13 18:03:28 +00:00
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p_pk3 =
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"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"+
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2005-11-26 11:16:50 +00:00
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"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"+
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"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"+
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"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"+
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"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"+
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"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"+
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"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"+
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"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"+
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"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"+
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"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"+
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"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"+
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"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"+
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"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"+
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"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"+
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"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"+
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"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"+
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"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"+
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"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"+
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"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"+
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"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"+
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"\x00\x00\x00\x00\x04\x02\x00\x00\x4d\x53\x44"+
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"\x42\x4c\x49\x42\x00\x00\x00\x07\x06\x00\x00"+
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"\x00\x00\x0d\x11\x00\x00\x00\x00\x00\x00\x00"+
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"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"+
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"\x00\x00\x00\x00\x00\x00"
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2006-08-13 18:03:28 +00:00
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p_lang =
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"\x02\x01\x00\x47\x00\x00\x02\x00\x00\x00\x00"+
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2005-11-26 11:16:50 +00:00
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"\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00"+
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"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"+
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"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"+
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"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"+
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"\x00\x00\x00\x00\x00\x00\x30\x30\x30\x00\x00"+
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"\x00\x03\x00\x00\x00"
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2009-01-12 00:26:05 +00:00
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2005-11-26 11:16:50 +00:00
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user = user.slice(0, 29)
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pass = pass.slice(0, 29)
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ulen = user.length.chr
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plen = pass.length.chr
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user << ("\x00" * (30-user.length))
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pass << ("\x00" * (30-pass.length))
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p_login = p_hdr + user + ulen + pass + plen
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p_login << p_pk2 + plen + pass + p_pk3
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2009-10-13 22:24:47 +00:00
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2005-11-26 11:16:50 +00:00
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sock.put(p_login)
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sock.put(p_lang)
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resp = sock.get_once
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2009-10-13 22:24:47 +00:00
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if (resp and resp.length > 10 and resp[8,1].unpack('C')[0] == 0xe3)
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2005-11-26 11:16:50 +00:00
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return true
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end
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return false
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end
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2009-10-13 22:24:47 +00:00
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def mssql_login_datastore
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mssql_login(datastore['MSSQL_USER'], datastore['MSSQL_PASS'])
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end
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2009-10-14 20:56:36 +00:00
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def mssql_query(sql, doprint=false, opts={})
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2009-10-14 17:41:12 +00:00
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info = { :sql => sql }
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2009-10-14 20:56:36 +00:00
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opts[:timeout] ||= 15
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pkt = "\x01\x01" + [sql.length + 8].pack('n') + [rand(0x100)].pack('n') + [rand(0x100)].pack('C') + "\x00" + sql
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2009-01-12 00:26:05 +00:00
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sock.put(pkt)
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2009-10-14 20:56:36 +00:00
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resp = sock.get(opts[:timeout])
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2009-01-12 00:26:05 +00:00
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2009-10-14 17:41:12 +00:00
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mssql_parse_reply(resp, info)
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2009-10-13 22:24:47 +00:00
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mssql_print_reply(info) if doprint
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info
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end
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2009-10-14 20:56:36 +00:00
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def mssql_xpcmdshell(cmd, doprint=false, opts={})
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mssql_query("xp_cmdshell '#{cmd}'", doprint, opts)
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2009-10-13 22:24:47 +00:00
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end
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def mssql_parse_header(header)
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type, status, size, chan, pkt, window = header.unpack('CCnnCC')
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return [status, size, pkt]
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2009-01-12 00:26:05 +00:00
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end
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2009-10-13 22:24:47 +00:00
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def mssql_print_reply(info)
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2009-10-14 17:41:12 +00:00
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print_status("SQL Query: #{info[:sql]}")
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2009-10-13 22:24:47 +00:00
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if(info[:done] and info[:done][:rows].to_i > 0)
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print_status("Row Count: #{info[:done][:rows]} (Status: #{info[:done][:status]} Command: #{info[:done][:cmd]})")
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end
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if(info[:errors] and not info[:errors].empty?)
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info[:errors].each do |err|
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print_error(err)
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end
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end
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2009-10-14 17:41:12 +00:00
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2009-10-13 22:24:47 +00:00
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if(info[:rows] and not info[:rows].empty?)
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2009-10-14 17:41:12 +00:00
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tbl = Rex::Ui::Text::Table.new(
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'Indent' => 1,
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'Header' => "",
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'Columns' => info[:colnames]
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)
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info[:rows].each do |row|
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tbl << row
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2009-10-13 22:24:47 +00:00
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end
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2009-10-14 17:41:12 +00:00
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print_line(tbl.to_s)
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2009-10-13 22:24:47 +00:00
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end
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2009-01-12 05:18:05 +00:00
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end
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2009-10-14 17:41:12 +00:00
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def mssql_parse_reply(resp, info)
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info[:errors] = []
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2009-10-13 22:24:47 +00:00
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data = ""
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2009-01-12 05:18:05 +00:00
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status = 0
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while status == 0
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2009-10-14 14:25:26 +00:00
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break if not resp
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2009-10-13 22:24:47 +00:00
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status, size, pkt = mssql_parse_header(resp.slice!(0,8))
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break if not (status and size and pkt)
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data << resp.slice!(0,(size-8))
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2009-01-12 05:18:05 +00:00
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end
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2009-10-13 22:24:47 +00:00
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until data.empty?
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token = data.slice!(0,1).unpack('C')[0]
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2009-01-12 05:18:05 +00:00
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case token
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2009-10-14 14:25:26 +00:00
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when 0xa0
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mssql_parse_column_name(data, info)
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when 0xa1
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mssql_parse_column_info(data, info)
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2009-01-12 05:18:05 +00:00
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when 0xd1
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2009-10-13 22:24:47 +00:00
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mssql_parse_row(data, info)
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2009-01-12 05:18:05 +00:00
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when 0x79
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2009-10-13 22:24:47 +00:00
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mssql_parse_ret(data, info)
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2009-01-12 05:18:05 +00:00
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when 0xfd, 0xfe, 0xff
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2009-10-13 22:24:47 +00:00
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mssql_parse_done(data, info)
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when 0xaa
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mssql_parse_error(data, info)
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2009-01-12 05:18:05 +00:00
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when nil
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break
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else
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2009-10-14 17:41:12 +00:00
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# info[:errors] << "unsupported token: #{token}"
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2009-01-12 05:18:05 +00:00
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end
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2009-01-12 00:26:05 +00:00
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end
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2009-10-13 22:24:47 +00:00
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info
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2009-01-12 00:26:05 +00:00
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end
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2009-10-14 14:25:26 +00:00
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def mssql_parse_column_name(data, info)
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2009-10-13 22:24:47 +00:00
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len = data.slice!(0,2).unpack('v')[0]
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2009-10-14 14:25:26 +00:00
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str = data.slice!(0,len)
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info[:colnames] ||= []
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while(not str.empty?)
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len = str.slice!(0,1).unpack('C')[0]
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col = len == 0 ? 'NULL' : str.slice!(0,len)
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info[:colnames] << col
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end
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2009-10-13 22:24:47 +00:00
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info
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2009-01-12 05:18:05 +00:00
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end
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2009-10-14 14:25:26 +00:00
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def mssql_parse_column_info(data, info)
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len = data.slice!(0,2).unpack('v')[0]
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str = data.slice!(0,len)
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info[:colinfos] ||= []
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2009-10-14 17:41:12 +00:00
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|
|
|
|
idx = -1
|
|
|
|
|
|
|
|
while(not str.empty?)
|
|
|
|
|
|
|
|
idx += 1
|
|
|
|
|
|
|
|
### int
|
|
|
|
if(
|
|
|
|
str[0,5] == "\x07\x00\x20\x00\x38" or
|
|
|
|
str[0,5] == "\x07\x00\x08\x00\x38" or # int
|
|
|
|
false
|
|
|
|
)
|
|
|
|
str.slice!(0,5)
|
|
|
|
info[:colinfos] << [:int, 4]
|
|
|
|
next
|
|
|
|
end
|
|
|
|
|
|
|
|
### smallint
|
|
|
|
if(
|
|
|
|
str[0,5] == "\x0d\x00\x09\x00\x26" or
|
|
|
|
str[0,5] == "\x0d\x00\x21\x00\x26" or
|
|
|
|
false
|
|
|
|
)
|
|
|
|
str.slice!(0,5)
|
|
|
|
info[:colinfos] << [:smallint, str.slice!(0,1).unpack('C')[0]]
|
|
|
|
next
|
|
|
|
end
|
|
|
|
|
|
|
|
### smallint2
|
|
|
|
if(
|
|
|
|
str[0,5] == "\x06\x00\x08\x00\x34" or
|
|
|
|
false
|
|
|
|
)
|
|
|
|
str.slice!(0,5)
|
|
|
|
info[:colinfos] << [:smallint2, 2]
|
|
|
|
next
|
|
|
|
end
|
|
|
|
|
|
|
|
### image
|
|
|
|
if(
|
|
|
|
str[0,9] == "\x14\x00\x21\x00\x22\x00\x10\x00\x00" or
|
|
|
|
false
|
|
|
|
)
|
|
|
|
str.slice!(0,9)
|
|
|
|
len = str.slice!(0,2).unpack('v')[0]
|
|
|
|
nam = str.slice!(0,len)
|
|
|
|
info[:colinfos] << [:image, 0, nam]
|
|
|
|
next
|
|
|
|
end
|
|
|
|
|
|
|
|
### tinyint
|
|
|
|
if(
|
|
|
|
str[0,5] == "\x05\x00\x08\x00\x30" or
|
|
|
|
false
|
|
|
|
)
|
|
|
|
str.slice!(0,5)
|
|
|
|
info[:colinfos] << [:tinyint, 1]
|
|
|
|
next
|
|
|
|
end
|
|
|
|
|
|
|
|
|
|
|
|
### longint
|
|
|
|
if(
|
|
|
|
str[0,6] == "\x19\x00\x20\x00\x6c\x11" or
|
|
|
|
str[0,6] == "\x19\x00\x21\x00\x6c\x11" or
|
|
|
|
false
|
|
|
|
)
|
|
|
|
str.slice!(0,6)
|
|
|
|
info[:colinfos] << [:long, str.slice!(0,2).unpack("v")[0]]
|
|
|
|
next
|
|
|
|
end
|
|
|
|
|
|
|
|
### hex
|
|
|
|
if(str[0,5] == "\x04\x00\x20\x00\x25")
|
|
|
|
str.slice!(0,5)
|
|
|
|
info[:colinfos] << [:hex, str.slice!(0,1).unpack('C')[0]]
|
|
|
|
next
|
|
|
|
end
|
|
|
|
|
|
|
|
### string
|
|
|
|
if(
|
|
|
|
str[0,5] == "\x02\x00\x21\x00\x27" or # varchar
|
|
|
|
str[0,5] == "\x02\x00\x08\x00\x27" or
|
2009-10-14 17:51:44 +00:00
|
|
|
str[0,5] == "\x02\x00\x01\x00\x27" or
|
2009-10-14 17:41:12 +00:00
|
|
|
str[0,5] == "\x12\x00\x08\x00\x27" or
|
|
|
|
str[0,5] == "\x12\x00\x09\x00\x27" or
|
|
|
|
str[0,5] == "\x04\x00\x09\x00\x25" or # varbinary
|
|
|
|
str[0,5] == "\x04\x00\x21\x00\x25" or
|
|
|
|
str[0,5] == "\x04\x00\x09\x00\x25" or
|
|
|
|
false
|
|
|
|
)
|
|
|
|
str.slice!(0,5)
|
|
|
|
info[:colinfos] << [:string, str.slice!(0,1).unpack('C')[0]]
|
|
|
|
next
|
|
|
|
end
|
|
|
|
|
|
|
|
### char(x)
|
|
|
|
if(
|
|
|
|
str[0,5] == "\x01\x00\x08\x00\x2f" or
|
|
|
|
str[0,5] == "\x02\x00\x09\x00\x27" or
|
|
|
|
false
|
|
|
|
)
|
|
|
|
str.slice!(0,5)
|
|
|
|
info[:colinfos] << [:string, str.slice!(0,1).unpack("C")[0]]
|
|
|
|
next
|
|
|
|
end
|
|
|
|
|
|
|
|
### datetime
|
|
|
|
if(
|
|
|
|
str[0,5] == "\x0c\x00\x08\x00\x3d" or
|
|
|
|
false
|
|
|
|
)
|
|
|
|
str.slice!(0,5)
|
|
|
|
info[:colinfos] << [:datetime, 8]
|
|
|
|
next
|
|
|
|
end
|
|
|
|
|
|
|
|
### datetime2
|
|
|
|
if(
|
|
|
|
str[0,6] == "\x0f\x00\x21\x00\x6f\x08" or
|
|
|
|
false
|
|
|
|
)
|
|
|
|
str.slice!(0,6)
|
|
|
|
info[:colinfos] << [:datetime2, 8]
|
|
|
|
next
|
|
|
|
end
|
|
|
|
|
|
|
|
### binary
|
|
|
|
if(
|
|
|
|
str[0,6] == "\x04\x00\x21\x00\x25\x06" or
|
|
|
|
false
|
|
|
|
)
|
|
|
|
str.slice!(0,6)
|
|
|
|
info[:colinfos] << [:binary]
|
|
|
|
next
|
|
|
|
end
|
|
|
|
|
|
|
|
info[:errors] << "unknown column type: #{info[:colnames][idx]} == #{str.unpack("H*")[0]}"
|
|
|
|
info[:colinfos] << [:unknown, 6]
|
|
|
|
break
|
|
|
|
end
|
2009-10-14 14:25:26 +00:00
|
|
|
info
|
|
|
|
end
|
2009-10-13 22:24:47 +00:00
|
|
|
def mssql_parse_row(data, info)
|
2009-10-14 17:41:12 +00:00
|
|
|
|
2009-10-13 22:24:47 +00:00
|
|
|
info[:rows] ||= []
|
2009-10-14 17:41:12 +00:00
|
|
|
row = []
|
|
|
|
|
|
|
|
info[:colinfos].each do |col|
|
|
|
|
case col[0]
|
|
|
|
when :int
|
|
|
|
row << data.slice!(0,4).unpack('V')[0]
|
|
|
|
|
|
|
|
when :smallint
|
|
|
|
len = data.slice!(0,1).unpack('C')[0]
|
|
|
|
raw = data.slice!(0,len)
|
|
|
|
row << raw.unpack('v')[0]
|
|
|
|
|
|
|
|
when :smallint2
|
|
|
|
row << data.slice!(0,2).unpack('v')[0]
|
|
|
|
|
|
|
|
when :tinyint
|
|
|
|
row << data.slice!(0,1).unpack('C')[0]
|
|
|
|
|
|
|
|
when :long
|
|
|
|
|
|
|
|
# XXX: completely made up bignum parsing...
|
|
|
|
|
|
|
|
len = data.slice!(0,1).unpack('C')[0]
|
|
|
|
raw = data.slice!(0,len)
|
|
|
|
sum = 0
|
|
|
|
bit = raw.unpack("C*").reverse
|
|
|
|
bit.each_index do |idx|
|
|
|
|
base = (256 ** (bit.length - idx - 1))
|
|
|
|
if (base > 0)
|
|
|
|
sum += base * bit[idx]
|
|
|
|
else
|
|
|
|
sum += bit[idx]
|
|
|
|
end
|
|
|
|
end
|
|
|
|
|
|
|
|
row << "?#{raw.unpack("H*")[0]}"
|
|
|
|
|
|
|
|
when :hex
|
|
|
|
len = data.slice!(0,1).unpack('C')[0]
|
2009-10-14 17:51:44 +00:00
|
|
|
row << ((len > 0) ? data.slice!(0,len) : '')
|
2009-10-14 17:41:12 +00:00
|
|
|
|
|
|
|
when :string
|
|
|
|
len = data.slice!(0,1).unpack('C')[0]
|
2009-10-14 17:51:44 +00:00
|
|
|
row << ((len > 0) ? data.slice!(0,len) : '')
|
2009-10-14 17:41:12 +00:00
|
|
|
|
|
|
|
when :datetime
|
|
|
|
# XXX: convert to unix time
|
|
|
|
row << data.slice!(0,8).unpack("H*")[0]
|
|
|
|
|
|
|
|
when :datetime2
|
|
|
|
# XXX: convert to unix time
|
|
|
|
len = data.slice!(0,1).unpack('C')[0]
|
|
|
|
row << data.slice!(0,len).unpack("H*")[0]
|
|
|
|
|
|
|
|
when :image
|
|
|
|
len = data.slice!(0,1).unpack('C')[0]
|
2009-10-14 17:51:44 +00:00
|
|
|
row << ((len > 0) ? data.slice!(0,len).unpack("H*")[0] : '')
|
2009-10-14 17:41:12 +00:00
|
|
|
|
|
|
|
when :binary
|
|
|
|
len = data.slice!(0,1).unpack('C')[0]
|
2009-10-14 17:51:44 +00:00
|
|
|
row << ((len > 0) ? data.slice!(0,len).unpack("H*")[0] : '')
|
2009-10-14 17:41:12 +00:00
|
|
|
|
|
|
|
when :unknown
|
|
|
|
len = data.slice!(0,1).unpack('C')[0]
|
|
|
|
row << "????-" + data.slice!(0,len) if len
|
|
|
|
end
|
|
|
|
end
|
|
|
|
info[:rows] << row
|
2009-10-13 22:24:47 +00:00
|
|
|
info
|
2009-01-12 05:18:05 +00:00
|
|
|
end
|
2009-01-12 00:26:05 +00:00
|
|
|
|
2009-10-13 22:24:47 +00:00
|
|
|
def mssql_parse_ret(data, info)
|
|
|
|
ret = data.slice!(0,4).unpack('N')[0]
|
|
|
|
info[:ret] = ret
|
|
|
|
info
|
2009-01-12 00:26:05 +00:00
|
|
|
end
|
2009-01-12 05:18:05 +00:00
|
|
|
|
2009-10-13 22:24:47 +00:00
|
|
|
def mssql_parse_done(data, info)
|
|
|
|
status, cmd, rows = data.slice!(0,8).unpack('vvV')
|
|
|
|
info[:done] = { :status => status, :cmd => cmd, :rows => rows }
|
|
|
|
info
|
2009-01-12 05:18:05 +00:00
|
|
|
end
|
|
|
|
|
2009-10-13 22:24:47 +00:00
|
|
|
def mssql_parse_error(data, info)
|
|
|
|
len = data.slice!(0,2).unpack('v')[0]
|
|
|
|
buff = data.slice!(0,len)
|
|
|
|
|
|
|
|
errno,state,sev,elen = buff.slice!(0,8).unpack('VCCv')
|
|
|
|
emsg = buff.slice!(0,elen)
|
|
|
|
info[:errors] << "SQL Server Error ##{errno} (State:#{state} Severity:#{sev}): #{emsg}"
|
|
|
|
info
|
2009-01-12 05:18:05 +00:00
|
|
|
end
|
2009-10-13 22:24:47 +00:00
|
|
|
|
2009-01-12 00:26:05 +00:00
|
|
|
end
|
2005-11-26 11:16:50 +00:00
|
|
|
end
|