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cache code.
This uses gencache, mimir's new caching code that stores at text-based cache
of various data.
Mimir has done a *lot* of work on this patch, and it is finally time to
get it in CVS.
Andrew Bartlett
- move winbindd client handling into accessor functions in
winbindd_util.c
- move some winbindd socket routines into accessor functions in
winbindd_utils.c
(The deadlock situation mentioned in the appliance branch is probably
not applicable since we don't clear the connection cache on SIGHUP.
Perhaps we should?)
setups.
- split up the ads structure into logical pieces. This makes it much
easier to keep things like the authentication realm and the server
realm separate (they can be different).
- allow ads callers to specify that no sasl bind should be performed
(used by "net ads info" for example)
- fix an error with handing ADS_ERROR_SYSTEM() when errno is 0
- completely rewrote the code for finding the LDAP server. Now try DNS
methods first, and try all DNS servers returned from the SRV DNS
query, sorted by closeness to our interfaces (using the same sort code
as we use in replies from WINS servers). This allows us to cope with
ADS DCs that are down, and ensures we don't pick one that is on the
other side of the country unless absolutely necessary.
- recognise dnsRecords as binary when displaying them
- cope with the realm not being configured in smb.conf (work it out
from the LDAP server)
- look at the trustDirection when looking up trusted domains and don't
include trusts that trust our domains but we don't trust
theirs.
- use LDAP to query the alternate (netbios) name for a realm, and make
sure that both and long and short forms of the name are accepted by
winbindd. Use the short form by default for listing users/groups.
- rescan the list of trusted domains every 5 minutes in case new trust
relationships are added while winbindd is running
- include transient trust relationships (ie. C trusts B, B trusts A,
so C trusts A) in winbindd.
- don't do a gratuituous node status lookup when finding an ADS DC (we
don't need it and it could fail)
- remove unused sid_to_distinguished_name function
- make sure we find the allternate name of our primary domain when
operating with a netbiosless ADS DC (using LDAP to do the lookup)
- fixed the rpc trusted domain enumeration to support up to approx
2000 trusted domains (the old limit was 3)
- use the IP for the remote_machine (%m) macro when the client doesn't
supply us with a name via a netbios session request (eg. port 445)
- if the client uses SPNEGO then use the machine name from the SPNEGO
auth packet for remote_machine (%m) macro
- add new 'net ads workgroup' command to find the netbios workgroup
name for a realm
the (now static) global_sam_sid.
The only place it was being used was to return global_sid_NULL to some
uid->sid functions - and I'm not convinced this is correct in any case.
Andrew Bartlett
this means "xcopy /o" has a chance of working with ACLs that contain
ACEs that use SIDs that the Samba server has no knowledge of.
It's a bit hackish, Tim, can you look at my uid.c changes?
the sid->uid and uid->sid conversions.
Remove some duplicate arguments from these funcitons, and update the
request/response structures for this and the 'winbind domain name' feature.
As such 'winbindd_lookup_name' now takes both a domain and username.
smbd, and also makes it much cleaner inside winbindd.
It is mostly my code, with a few changes and testing performed by Alexander
Bokovoy <a.bokovoy@sam-solutions.net>. ab has tested it in security=domain and
security=ads, but more testing is always appricatiated.
The idea is that we no longer cart around a 'domain\user' string, we keep them
seperate until the last moment - when we push that string into a pwent on onto
the socket.
This removes the need to be constantly parsing that string - the domain prefix
is almost always already provided, (only a couple of functions actually changed
arguments in all this).
Some consequential changes to the RPC client code, to stop it concatonating the
two strings (it now passes them both back as params).
I havn't changed the cache code, however the usernames will no longer have a
double domain prefix in the key string. The actual structures are unchanged
- but the meaning of 'username' in the 'rid' will have changed. (The cache is
invalidated at startup, so on-disk formats are not an issue here).
Andrew Bartlett
<a.bokovoy@sam-solutions.net>.
The idea is the domain\username is rather harsh for unix systems - people don't
expect to have to FTP, SSH and (in particular) e-mail with a username like
that.
This 'corrects' that - but is not without its own problems.
As you can see from the changes to files like username.c and wb_client.c (smbd's
winbind client code) a lot of assumptions are made in a lot of places about
lp_winbind_seperator determining a users's status as a domain or local user.
The main change I will shortly be making is to investigate and kill off
winbind_initgroups() - as far as I know it was a workaround for an old bug in
winbind itself (and a bug in RH 5.2) and should no longer be relevent.
I am also going to move to using the 'winbind uid' and 'winbind gid' paramaters
to determine a user/groups's 'local' status, rather than the presence of the
seperator.
As such, this functionality is recommended for servers providing unix services,
but is currently less than optimal for windows clients.
(TODO: remove all references to lp_winbind_seperator() and
lp_winbind_use_default_domain() from smbd)
Andrew Bartlett
the list received at startup or we get an out of date list. I thought
there might be some sequence number that is incremented when a trusted
domain is added or removed - perhaps there is but I just haven't found it
yet.
- Renamed get_domain_info() to init_domain_list()
- Made an accessor function to return the list of trusted domains rather
than using a global so we don't have to remember to put a magic init
function
- The getent state can not keep a pointer to a winbind_domain structure as
it may be freed if init_domain_list() is called again so we keep the
domain name instead
when they are added or removed on the PDC.
- renamed GETPWNAM_FROM_{UID,USER} constants and functions to GETPW{NAM,UID}
- renamed GETGRNAM_FROM_{GID,GROUP} constants and functions to GETGR{NAM,GID}
- use SIGUSR2 in winbindd for debugging/logging instead of SIGUSR1 in
preparation for moving to smbcontrol type messages (not sure whether to
ditch this altogether or not)
- tidy debugging messages in top level winbind user and group routines
- convert talloc_init() to talloc_init_named()
- make enumerations of the domain list use the same local variable names
the method used for checking if a domain is a trusted domain is very
crude, we should really call a backend fn of some sort. For now I'm
using winbindd to do the dirty work.
the backends
at startup, loop until we get the domain sid for our primary domain,
trying every 10 seconds. This makes winbindd handle a room-wide power
failure better
this one looks like just another winbind backend, and has the
following properties:
- does -ve and +ve cacheing of all queries
- can be disabled with -n switch to winbindd
- stores all records packed, so even huge domains are not a problem
for a complete cache
- handles the server being down
- uses sequence numbers for all entries
This fixes a lot of problems with winbindd. Serving from cache is now
*very* fast.
I spent quite a while trying to work out how to make this call
via ldap and failed. I then found that MS servers seem use rpc
for sid_to_name, and it works even when in native mode, I ended
up just implementing it via rpc
also created winbindd_rpc.c which contains the functions that
have been converted to the new structure. There will soon be
a winbindd_ads.c for the ldap backend
This just splits off the dispinfo call behind a methods structure.
I'll split off a few more functions soon, then we will be ready for
LDAP replacement methods
winbindd_lookup_sid_by_name. Also if the lookup fails then clobber
the output parameters rather than leaving them looking potentially
valid.
Add doxygen.
There was a bug in cli_lsa_lookup_name/lookup_sid where NT_STATUS_NONE_MAPPED was
being mapped to NT_STATUS_OK, and also the *wrong* number of entries mapped
was being returned. The correct field is mapped_count, *NOT* num_entries.
Jeremy.
