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client: add -D to discover KMS server #51

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edgd1er 2022-04-14 01:30:34 +02:00
parent a43f16ab94
commit 805c234e33
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1 changed files with 19 additions and 1 deletions
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py-kms/pykms_Client.py
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@ -13,7 +13,13 @@ import logging
import os
import threading
import pykms_RpcBind, pykms_RpcRequest
import dns.message
import dns.rdataclass
import dns.rdatatype
import dns.query
import dns.resolver
import pykms_RpcBind, pykms_RpcRequest
from pykms_Filetimes import dt_to_filetime
from pykms_Dcerpc import MSRPCHeader, MSRPCBindNak, MSRPCRequestHeader, MSRPCRespHeader
from pykms_Base import kmsBase, UUID
@ -72,6 +78,7 @@ Type \"STDOUT\" to view log info on stdout. Type \"FILESTDOUT\" to combine previ
Use \"STDOUTOFF\" to disable stdout messages. Use \"FILEOFF\" if you not want to create logfile.',
'def' : os.path.join('.', 'pykms_logclient.log'), 'des' : "logfile"},
'lsize' : {'help' : 'Use this flag to set a maximum size (in MB) to the output log file. Deactivated by default.', 'def' : 0, 'des': "logsize"},
'discovery' : {'help': 'ask the client to perform a _vlmcs._tcp.domain.tld DNS request to set KMS server.', 'def': None , 'des': 'discovery' },
}
def client_options():
@ -99,6 +106,8 @@ def client_options():
default = clt_options['lfile']['def'], help = clt_options['lfile']['help'], type = str)
client_parser.add_argument("-S", "--logsize", dest = clt_options['lsize']['des'], action = "store",
default = clt_options['lsize']['def'], help = clt_options['lsize']['help'], type = float)
client_parser.add_argument("-D", "--discovery", dest = clt_options['discovery']['des'], action = "store",
default = clt_options['discovery']['def'], help = clt_options['discovery']['help'], type = str)
client_parser.add_argument("-h", "--help", action = "help", help = "show this help message and exit")
@ -186,6 +195,15 @@ def client_update():
raise RuntimeError(f'Client failed to find machine configuration in kms database - make sure it contains an entry for "{clt_config["mode"]}"')
def client_connect():
if clt_config['discovery'] is not None:
loggerclt.info(f'Using Domain: {clt_config["discovery"]}')
r = dns.resolver.query('_vlmcs._tcp.' + clt_config['discovery'], dns.rdatatype.SRV)
for a in r:
loggerclt.debug(f'answer KMS server: {a.target} , port: {a.port}')
clt_config['ip'] = socket.gethostbyname(r[0].target.to_text())
clt_config['port'] = r[0].port
loggerclt.info("Connecting to %s on port %d" % (clt_config['ip'], clt_config['port']))
try:
clt_sock = socket.create_connection((clt_config['ip'], clt_config['port']), timeout = clt_config['timeoutidle'])