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samba_kcc: add an option to set assumed current time

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The KCC algorithm contains a timeouts in a couple of places, and we
need to be able to set the time for testing these.

This also means samba_kcc uses the same time in all places.

Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
This commit is contained in:
Douglas Bagnall 2015-03-05 11:40:55 +13:00 committed by Andrew Bartlett
parent a59c8ed7bc
commit 9e78375d2c
2 changed files with 30 additions and 9 deletions
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6
python/samba/kcc_utils.py
View File

@ -1423,13 +1423,14 @@ class Site(object):
"""An individual site object discovered thru the configuration
naming context. Contains all DSAs that exist within the site
"""
def __init__(self, site_dnstr):
def __init__(self, site_dnstr, unix_now):
self.site_dnstr = site_dnstr
self.site_guid = None
self.site_options = 0
self.site_topo_generator = None
self.site_topo_failover = 0 # appears to be in minutes
self.dsa_table = {}
self.unix_now = unix_now
def load_site(self, samdb):
"""Loads the NTDS Site Settions options attribute for the site
@ -1555,8 +1556,7 @@ class Site(object):
D_sort = []
d_dsa = None
unixnow = int(time.time()) # seconds since 1970
ntnow = unix2nttime(unixnow) # double word number of 100 nanosecond
ntnow = unix2nttime(self.unix_now) # double word number of 100 nanosecond
# intervals since 1600s
for dsa in self.dsa_table.values():

31
source4/scripting/bin/samba_kcc
View File

@ -38,6 +38,7 @@ import optparse
import logging
import itertools
import heapq
import time
from samba import (
getopt as options,
@ -154,7 +155,7 @@ class KCC(object):
self.my_site_dnstr = "CN=%s,CN=Sites,%s" % (
self.samdb.server_site_name(),
self.samdb.get_config_basedn())
site = Site(self.my_site_dnstr)
site = Site(self.my_site_dnstr, unix_now)
site.load_site(self.samdb)
self.site_table[str(site.site_guid)] = site
@ -178,7 +179,7 @@ class KCC(object):
for msg in res:
sitestr = str(msg.dn)
site = Site(sitestr)
site = Site(sitestr, unix_now)
site.load_site(self.samdb)
# already loaded
@ -301,13 +302,12 @@ class KCC(object):
if failed_link.failure_count > 0:
unix_first_time_failure = nttime2unix(failed_link.time_first_failure)
# TODO guard against future
current_time = int(time.time())
if unix_first_time_failure > current_time:
if unix_first_time_failure > unix_now:
logger.error("The last success time attribute for \
repsFrom is in the future!")
# Perform calculation in seconds
if (current_time - unix_first_time_failure) > 60 * 60 * 2:
if (unix_now - unix_first_time_failure) > 60 * 60 * 2:
return True
# TODO connections
@ -2929,6 +2929,10 @@ parser.add_option("--tmpdb",
help="schemaless database file to create for ldif import",
type=str, metavar="<file>")
parser.add_option("--now",
help="assume current time is this ('YYYYmmddHHMMSS[tz]', default: system time)",
type=str, metavar="<date>")
logger = logging.getLogger("samba_kcc")
logger.addHandler(logging.StreamHandler(sys.stdout))
@ -2956,6 +2960,23 @@ else:
if opts.dburl is None:
opts.dburl = lp.samdb_url()
if opts.now:
for timeformat in ("%Y%m%d%H%M%S%Z", "%Y%m%d%H%M%S"):
try:
now_tuple = time.strptime(opts.now, timeformat)
break
except ValueError:
pass
else:
# else happens if break doesn't --> no match
print >> sys.stderr, "could not parse time '%s'" % opts.now
sys.exit(1)
unix_now = int(time.mktime(now_tuple))
else:
unix_now = int(time.time())
# Instantiate Knowledge Consistency Checker and perform run
kcc = KCC()