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This is a fix for a few small inefficiencies/bugs in the get_dcs() path.
* because the third add_one_dc_unique() loop was outside the ADS check all DCs
returned from the non-sitename lookup were being tacked onto the dc_name_ip
list twice.
* add_one_dc_unique() now checks if the given IP address already exists before
adding it to the list, making the returned list actually unique
* added more thorough doxygen comment headers
(This used to be commit cb2d488e1d)
Fix segv when talking to parent DC (joined to child domain).
The root cause was
(a) storing the parent domain in the cli_state struct caused
the NTLMSSP pipe bind to fail which made us fallover to
the schannel code path
(b) the dcinfo pointer in cm_get_schannel_dcinfo() was returning
NULL even though the function indicated success.
(This used to be commit 5ce4a2ae66)
reconnect code to cope with rebooting a DC. This
replaces the code I asked Volker to revert.
The logic is pretty simple. It adds a new parameter,
"winbind reconnect delay", set to 30 seconds by
default, which determines how long to wait between
connection attempts.
To avoid overwhelming the box with DC-probe
forked children, the code now keeps track of
the DC probe child per winbindd_domain struct
and only starts a new one if the existing one
has died.
I also added a little logic to make sure the
dc probe child always sends a message whatever
the reason for exit so we will always reschedule
another connect attempt.
Also added documentation.
Jeremy.
(This used to be commit 8027197635)
This is a band-aid for the rather convoluted offline/online mess in winbind
right now. Winbind re-uses the offline functionality that is targeted at domain
client installations on laptops to not overload disfunctional DCs. It uses the
winbind cache timeout as the retry timeout after a DC reboot.
I am using a parametric options because when this mess is cleaned up, that
parameter needs to go away again.
I'd recommend to use something like
winbind:online check timeout = 30
in typical LAN environments. This means a reconnect is attempted every 30
seconds.
Volker
(This used to be commit 9920473cc1)
in winbind
When a w2k3 DC is rebooted the 139/445 ports come up before the
udp/389 cldap port. During this brief period, winbind manages to
connect to 139/445 but not to udp 389. It then enters a tight loop
where it leaks one fd each time. In a couple of seconds it runs out of
file descriptors, and leaves winbind crippled after the DC does
finally come up
(This used to be commit 57187cafbc)
Extends ads_connect() to a new call ads_connect_gc() which connects on port
3268 rather than port 389. Also makes ads_try_connect() static and
only used internally to ldap.c
(This used to be commit f4c37dbe2c)
goto target we were not reinitializing the array counts.
From Herb:
This is in the file nsswitch/winbindd_cm.c (samba-3.0.30) line 1236
We have a label again: where we keep trying to find the name of the DC
from the list of IPs returned by get_dcs. If we fail to figure out the
name we do a goto again at the end of the function. The problem is we
don't reset the num_dcs, num_addrs, etc and free the memory in the
various arrays. This seems wrong to me. I have a winbindd core where
I have 9 IPs returned for the DCs but at the time of the crash num_dcs
is 87 and if I look through the array dcs it keeps repeating entries
from the same group of 9
Jerry, Volker and Guenther please check.
Jeremy.
(This used to be commit 15f464321a)
when checking for a trusted domain situation.
This is how it was meant to be:
Otherwise, with a dc-trusted-domain situation but trusted domains disabled,
we would attempt to do a session setup and fail (wouldn't even get a trust
password).
Michael
(This used to be commit a5a51ca8e5)
Win2008 domain (merged from v3-0-test).
commit 8dc4e97977
Author: Steven Danneman <sdanneman@isilon.com>
Date: Wed May 7 13:34:26 2008 -0700
spnego SPN fix when contacting trusted domains
cli_session_setup_spnego() was not taking into consideration the situation
where we're connecting to a trusted domain, specifically one (like W2K8)
which doesn't return a SPN in the NegTokenInit.
This caused two problems:
1) When guessing the SPN using kerberos_get_default_realm_from_ccache() we
were always using our default realm, not the realm of the domain we're
connecting to.
2) When falling back on NTLMSSP for authentication we were passing the name
of the domain we're connecting to for use in our credentials when we should be
passing our own workgroup name.
The fix for both was to split the single "domain" parameter into
"user_domain" and "dest_realm" parameters. We use the "user_domain"
parameter to pass into the NTLM call, and we used "dest_realm" to create an SPN
if none was returned in the NegTokenInit2 packet. If no "dest_realm" is
provided we assume we're connecting to our own domain and use the credentials
cache to build the SPN.
Since we have a reasonable guess at the SPN, I removed the check that defaults
us directly to NTLM when negHint is empty.
(This used to be commit b78b14c88e)
looking up trust credentials in our tdb.
commit fd0ae47046
Author: Steven Danneman <sdanneman@isilon.com>
Date: Thu May 8 13:34:49 2008 -0700
Use machine account and machine password from our domain when
contacting trusted domains.
(This used to be commit 69b37ae607)
We now open messages.tdb even before we do the become_daemon. become_daemon()
involves a fork and an immediate exit of the parent, thus the
parent_is_longlived argument must be set to false in this case. The parent is
not really long lived :-)
(This used to be commit 4f4781c6d1)
My NT4SP6 which my DC here trusts sends 0x15 instead of 0x13, from looking at
the sniff at least the DC name is at the same place.
(This used to be commit 79bc6796b8)
In order to avoid receiving NT_STATUS_DOWNGRADE_DETECTED from a w2k8
netr_ServerAuthenticate2 reply, we need to start with the AD netlogon negotiate
flags everywhere (not only when running in security=ads). Only for NT4 we need
to do a downgrade to the returned negotiate flags.
Tested with w2k8, w2ksp4, w2k3r2 and nt4sp6.
Guenther
(This used to be commit 0970369ca0)
Another preparation to convert secrets.c to dbwrap: The dbwrap API does not
provide a sane tdb_lock_with_timeout abstraction. In the clustered case the DC
mutex is needed per-node anyway, so it is perfectly fine to use a local mutex
only.
(This used to be commit f94a63cd8f)
On a DC, we always use the domain name given. On a domain member,
we use lp_workgroup(). This fixes a bug supporting trusted domains.
(This used to be commit 8b063a4141)
