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If we get a unique name via a broadcast query, there's no point in waiting the
full timeout. A unique name is just what its name says: unique. No point in
waiting longer.
Autobuild-User: Volker Lendecke <vlendec@samba.org>
Autobuild-Date: Tue May 3 00:57:24 CEST 2011 on sn-devel-104
This is done in name_query_send these days
Autobuild-User: Volker Lendecke <vlendec@samba.org>
Autobuild-Date: Mon Apr 25 19:24:58 CEST 2011 on sn-devel-104
This does an async port 137 transaction: It connects to /tmp/.nmbd/unexpected,
sends out the query and then waits for a reply on both the socket as well as
data from /tmp/.nmbd/unexpected. Every packet is passed through a validator. If
that returns true, the packet received is finally accepted.
transaction id of packets it was requested to send via a client, and
only store replies that match these ids. On the client side change
clients to always attempt to ask nmbd first for name_query and
node_status calls, and then fall back to doing socket calls if
we can't talk to nmbd (either nmbd is not running, or we're not
root and cannot open the messaging tdb's). Fix readers of unexpected.tdb
to delete packets they've successfully read.
This should fix a long standing problem of unexpected.tdb
growing out of control in noisy NetBIOS envioronments with
lots of bradcasts, yet still allow unprivileged client apps
to work mostly as well as they already did (nmblookup for
example) in an environment when nmbd isn't running.
Jeremy.
Autobuild-User: Jeremy Allison <jra@samba.org>
Autobuild-Date: Sun Nov 14 05:22:45 UTC 2010 on sn-devel-104
And send replies always via the unicast address of the subnet.
This behavior is off by default (as before)
and can be enabled with "nmbd:bind explicit broadcast = yes".
metze
W2K3 DC's can have IPv6 addresses but won't serve
krb5/ldap or cldap on those addresses. Make sure when
we're asking for DC's we prefer IPv4.
If you have an IPv6-only network this prioritizing code
will be a no-op. And if you have a mixed network then you
need to prioritize IPv4 due to W2K3 DC's.
Jeremy.
gencache_get/set/del/iterate call gencache_init() internally anyway. And we've
been very lazy calling gencache_shutdown, so this seems not really required.
Jeremy: please review to ensure this doesn't appear to break anything
The function name_status_find() is documented as used for finding a server's
name given its IP address. It was, however, looking for the first matching
name which could be a group name at times. This fix ensures that group names
are skipped when scanning for a matching name.
Derrell
saf_join_store() should be called after a successful
domain join, the affinity to the dc used at join time
has a larger ttl, to avoid problems with delayed replication.
metze
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Günther Deschner <gd@samba.org>
(cherry picked from commit 80e74a27c5)
It could happen that all dcs in a site are unavailable
(some sites have only one dc) and then we need to fallback
to get all dcs.
metze
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Günther Deschner <gd@samba.org>
(cherry picked from commit c127367b1d)
for a server. We should have been doing this for a while,
but it's more critical with IPv6.
Original patch fixed up by James.
Jeremy.
(This used to be commit 5c7f7629a9)
zero_addr(&ss). All current uses were always of the
AF_INET form, so simplify the call. If in the future
we need to zero an addr to AF_INET6 this can be
done separately.
Jeremy.
(This used to be commit 2e92418a13)
and into util_sock.c. is_ipaddress() now copes with link:local:v6%ifname
addresses, as does interpret_string_addr().
Jeremy
(This used to be commit a3f7db3d30)
to struct sockaddr_storage in most places that matter (ie.
not the nmbd and NetBIOS lookups). This passes make test
on an IPv4 box, but I'll have to do more work/testing on
IPv6 enabled boxes. This should now give us a framework
for testing and finishing the IPv6 migration. It's at
the state where someone with a working IPv6 setup should
(theorecically) be able to type :
smbclient //ipv6-address/share
and have it work.
Jeremy.
(This used to be commit 98e154c312)
bugs in various places whilst doing this (places that assumed
BOOL == int). I also need to fix the Samba4 pidl generation
(next checkin).
Jeremy.
(This used to be commit f35a266b3c)
We don't use gethostbyname any more except in one case where
we're looking for host aliases (I don't know how to do that
with getaddrinfo yet). New function should be getaddrinfo().
Next step will be fixing lib/access.c, and then changing
libsmb/namequery.c to cope with IPv6 address returns.
Jeremy.
(This used to be commit 4a56b697b6)
IPv6 in winbindd, but moves most of the socket functions that were
wrongly in lib/util.c into lib/util_sock.c and provides generic
IPv4/6 independent versions of most things. Still lots of work
to do, but now I can see how I'll fix the access check code.
Nasty part that remains is the name resolution code which is
used to returning arrays of in_addr structs.
Jeremy.
(This used to be commit 3f6bd0e1ec)
The translate_name() used by cli_session_setup_spnego() cann rely
Winbindd since it is needed by the join process (and hence before
Winbind can be run).
(This used to be commit 00a93ed336)
site support in a network where many DC's are down.
I heard via Volker there is still a bug w.r.t the
wrong site being chosen with trusted domains but
we'll have to layer that fix on top of this.
Gd - complain if this doesn't work for you.
Jeremy.
(This used to be commit 97e248f89a)
string the clis_state struct. So call saf_store() after we
have the short domain name in the lsa_query_inof_policy code.
* Remove unused server string in saf_delete()
(This used to be commit 3eddae2f20)
the get_dc_list code to get the _kerberos. names
for site support. This way we don't depend on one
KDC to do ticket refresh. Even though we know it's
up when we add it, it may go down when we're trying
to refresh.
Jeremy.
(This used to be commit 77fe2a3d74)
support when looking up DC's. On every CLDAP
call store the returned client sitename (if
present, delete store if not) in gencache with
infinate timeout. On AD DNS DC lookup, try looking
for sitename DC's first, only try generic if
sitename DNS lookup failed.
I still haven't figured out yet how to ensure
we fetch the sitename with a CLDAP query before
doing the generic DC list lookup. This code is
difficult to understand. I'll do some experiments
and backtraces tomorrow to try and work out where
to force a CLDAP site query first.
Jeremy.
(This used to be commit ab3f0c5b1e)
return NTSTATUS.
If we want to differentiate different name resolution problems we might want
to introduce yet another error class for Samba-internal errors. Things like no
route to host to the WINS server, a DNS server explicitly said host not found
etc might be worth passing up.
Because we can not stash everything into the existing NT_STATUS codes, what
about a Samba-specific error class like NT_STATUS_DOS and NT_STATUS_LDAP?
Volker
(This used to be commit 60a166f034)
error. Fix our DNS SRV lookup code to deal with multi-homed hosts.
We were noly remembering one IP address per host from the Additional
records section in the SRV response which could have been an unreachable
address.
(This used to be commit 899179d2b9)
DCs isn't resolvable in DNS. The fix is to leave that DC out of the
returned list of DCs. I think the original code intended that anyway,
just didn't quite get it right ('i' wasn't incremented in that code
path, so the loop didn't terminate)
(This used to be commit d7ec9f3cc0)
The motivating factor is to not require more privileges for
the user account than Windows does when joining a domain.
The points of interest are
* net_ads_join() uses same rpc mechanisms as net_rpc_join()
* Enable CLDAP queries for filling in the majority of the
ADS_STRUCT->config information
* Remove ldap_initialized() from sam/idmap_ad.c and
libads/ldap.c
* Remove some unnecessary fields from ADS_STRUCT
* Manually set the dNSHostName and servicePrincipalName attribute
using the machine account after the join
Thanks to Guenther and Simo for the review.
Still to do:
* Fix the userAccountControl for DES only systems
* Set the userPrincipalName in order to support things like
'kinit -k' (although we might be able to just use the sAMAccountName
instead)
* Re-add support for pre-creating the machine account in
a specific OU
(This used to be commit 4c4ea7b20f)
realloc can return NULL in one of two cases - (1) the realloc failed,
(2) realloc succeeded but the new size requested was zero, in which
case this is identical to a free() call.
The error paths dealing with these two cases should be different,
but mostly weren't. Secondly the standard idiom for dealing with
realloc when you know the new size is non-zero is the following :
tmp = realloc(p, size);
if (!tmp) {
SAFE_FREE(p);
return error;
} else {
p = tmp;
}
However, there were *many* *many* places in Samba where we were
using the old (broken) idiom of :
p = realloc(p, size)
if (!p) {
return error;
}
which will leak the memory pointed to by p on realloc fail.
This commit (hopefully) fixes all these cases by moving to
a standard idiom of :
p = SMB_REALLOC(p, size)
if (!p) {
return error;
}
Where if the realloc returns null due to the realloc failing
or size == 0 we *guarentee* that the storage pointed to by p
has been freed. This allows me to remove a lot of code that
was dealing with the standard (more verbose) method that required
a tmp pointer. This is almost always what you want. When a
realloc fails you never usually want the old memory, you
want to free it and get into your error processing asap.
For the 11 remaining cases where we really do need to keep the
old pointer I have invented the new macro SMB_REALLOC_KEEP_OLD_ON_ERROR,
which can be used as follows :
tmp = SMB_REALLOC_KEEP_OLD_ON_ERROR(p, size);
if (!tmp) {
SAFE_FREE(p);
return error;
} else {
p = tmp;
}
SMB_REALLOC_KEEP_OLD_ON_ERROR guarentees never to free the
pointer p, even on size == 0 or realloc fail. All this is
done by a hidden extra argument to Realloc(), BOOL free_old_on_error
which is set appropriately by the SMB_REALLOC and SMB_REALLOC_KEEP_OLD_ON_ERROR
macros (and their array counterparts).
It remains to be seen what this will do to our Coverity bug count :-).
Jeremy.
(This used to be commit 1d710d06a2)
safe for using our headers and linking with C++ modules. Stops us
from using C++ reserved keywords in our code.
Jeremy
(This used to be commit 9506b8e145)
functions so we can funnel through some well known functions. Should help greatly with
malloc checking.
HEAD patch to follow.
Jeremy.
(This used to be commit 620f2e608f)
Don't use nstrings to hold workgroup and netbios names. The problem with them is that MB netbios
and workgroup names in unix charset (particularly utf8) may be up to 3x bigger than the name
when represented in dos charset (ie. cp932). So go back to using fstrings for these but
translate into nstrings (ie. 16 byte length values) for transport on the wire.
Jeremy.
(This used to be commit b4ea493599)
*) consolidates the dc location routines again (dns
and netbios) get_dc_list() or get_sorted_dc_list()
is the authoritative means of locating DC's again.
(also inludes a flag to get_dc_list() to define
if this should be a DNS only lookup or not)
(however, if you set "name resolve order = hosts wins"
you could still get DNS queries for domain name IFF
ldap_domain2hostlist() fails. The answer? Fix your DNS
setup)
*) enabled DOMAIN<0x1c> lookups to be funneled through
resolve_hosts resulting in a call to ldap_domain2hostlist()
if lp_security() == SEC_ADS
*) enables name cache for winbind ADS backend
*) enable the negative connection cache for winbind
ADS backend
*) removes some old dead code
*) consolidates some duplicate code
*) moves the internal_name_resolve() to use an IP/port pair
to deal with SRV RR dns replies. The namecache code
also supports the IP:port syntax now as well.
*) removes 'ads server' and moves the functionality back
into 'password server' (which can support "hostname:port"
syntax now but works fine with defaults depending on
the value of lp_security())
(This used to be commit d7f7fcda42)
* move back to qsort() for sorting IP address in get_dc_list()
* remove dc_name_cache in cm_get_dc_name() since it slowed
things down more than it helped. I've made a note of where
to add in the negative connection cache in the ads code.
Will come back to that.
* fix rpcclient to use PRINTER_ALL_ACCESS for set printer (instead
of MAX_ALLOWED)
* only enumerate domain local groups in our domain
* simplify ldap search for seqnum in winbindd's rpc backend
(This used to be commit f8cab8635b)
important once we start doing schannel, as there would be a lot more
roundtrips for the second PIPE open and bind. With this patch logging
in to a member server is a matter of two (three if you count the
ack...) packets between us and the DC.
Volker
(This used to be commit 5b3cb7725a)
90% fix for CR 1076. The password server parameter will no take things
like
password server = DC1 *
which means to contact DC1 first and the go to auto lookup if it
fails.
jerry
(This used to be commit 016ef8b36b)
