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2k/xp clients to fail to join the domain (see comments in srv_netlog_nt.c for details)
(This used to be commit 981bd70a56094740daf6d144f7b802370c0d9056)
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Changes all over the shop, but all towards:
- NTLM2 support in the server
- KEY_EXCH support in the server
- variable length session keys.
In detail:
- NTLM2 is an extension of NTLMv1, that is compatible with existing
domain controllers (unlike NTLMv2, which requires a DC upgrade).
* This is known as 'NTLMv2 session security' *
(This is not yet implemented on the RPC pipes however, so there may
well still be issues for PDC setups, particuarly around password
changes. We do not fully understand the sign/seal implications of
NTLM2 on RPC pipes.)
This requires modifications to our authentication subsystem, as we
must handle the 'challege' input into the challenge-response algorithm
being changed. This also needs to be turned off for
'security=server', which does not support this.
- KEY_EXCH is another 'security' mechanism, whereby the session key
actually used by the server is sent by the client, rather than being
the shared-secret directly or indirectly.
- As both these methods change the session key, the auth subsystem
needed to be changed, to 'override' session keys provided by the
backend.
- There has also been a major overhaul of the NTLMSSP subsystem, to
merge the 'client' and 'server' functions, so they both operate on a
single structure. This should help the SPNEGO implementation.
- The 'names blob' in NTLMSSP is always in unicode - never in ascii.
Don't make an ascii version ever.
- The other big change is to allow variable length session keys. We
have always assumed that session keys are 16 bytes long - and padded
to this length if shorter. However, Kerberos session keys are 8 bytes
long, when the krb5 login uses DES.
* This fix allows SMB signging on machines not yet running MIT KRB5 1.3.1. *
- Add better DEBUG() messages to ntlm_auth, warning administrators of
misconfigurations that prevent access to the privileged pipe. This
should help reduce some of the 'it just doesn't work' issues.
- Fix data_blob_talloc() to behave the same way data_blob() does when
passed a NULL data pointer. (just allocate)
REMEMBER to make clean after this commit - I have changed plenty of
data structures...
Andrew Bartlett
(This used to be commit 57a895aaabacc0c9147344d097d333793b77c947)
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source/passdb/pdb_get_set.c:
I agree with vl's #if 0 here, and am not quite sure what I was
thinking with regard to the original code.
Let's keep samba simple, and just remove it.
source/rpc_server/srv_netlog_nt.c:
Remove compleatly wrong comments. (There were correct, 2 years ago...)
source/intl/lang_tdb.c:
Add newline to debug message
Andrew Bartlett
(This used to be commit 2a8dbe03690b60f3d9c83de3cf6ce873aa0657bc)
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* add server support for DsEnumerateDomainTrusts()
(This used to be commit 06bacf6e3434db5bd09b48f84206441712e69a63)
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(This used to be commit 3101c236b8241dc0183995ffceed551876427de4)
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prior to this merge, checkout HEAD_PRE_3_0_0_BETA_3_MERGE
(This used to be commit adb98e7b7cd0f025b52c570e4034eebf4047b1ad)
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samlogon call certainly breaks the credential chain. Do it once during
the bind response.
Volker
(This used to be commit 616b6dd60fe621a968fef34e66550f86b7b735bc)
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TNG. Actually, it exists in the main Samba cvs tree in APPLIANCE_TNG
as I found out later :-)
It adds a new parameter: server schannel = yes/auto/no defaulting to
auto.
What does this mean to the user: No requireSignOrSeal registry patch
for XP anymore.
Many thanks for this code to Luke Leighton, Elrond and anybody else I
forgot to mention.
My next thing will be to see if this applies cleanly to 3_0.
Please test and comment!
Volker
(This used to be commit e1f953241eb020f19fe657f29afdae28dcf5a03b)
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use smb signing.
Andrew Bartlett
(This used to be commit 574e8a8ab7c94ecd9113df42e395e83632980675)
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This patch makes Samba compile cleanly with -Wwrite-strings.
- That is, all string literals are marked as 'const'. These strings are
always read only, this just marks them as such for passing to other functions.
What is most supprising is that I didn't need to change more than a few lines of code (all
in 'net', which got a small cleanup of net.h and extern variables). The rest
is just adding a lot of 'const'.
As far as I can tell, I have not added any new warnings - apart from making all
of tdbutil.c's function const (so they warn for adding that const string to
struct).
Andrew Bartlett
(This used to be commit 92a777d0eaa4fb3a1c7835816f93c6bdd456816d)
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group, testing for membership etc, use the already calculated NT_USER_TOKEN.
(which is initgroups() based)
So far we only fill out the 'domain' groups - we need to fill out the
'other sids' as well, and we possibly need to filter the list for 'domain
groups' only (the old code did that), but Win2k doesn't seem to mind
this for now.
I also need to find out what the magic '7' is about. Fortunetly JF is in town,
so I'll grill him tomorrow :-).
Andrew Bartlett
(This used to be commit 7e846e7387247f8bc2b07a1a1006014c6978143b)
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(This used to be commit ea3787d819df14f8b451780a55d2bf76dc4030ef)
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dashes of const. This is a rather large check-in, some things may break.
It does compile though :-).
Jeremy.
(This used to be commit 82b8f749a36b42e22186297482aad2abb04fab8a)
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The actual design change is relitivly small however:
It all goes back to jerry's 'BOOL store', added to many of the elements in a
SAM_ACCOUNT. This ensured that smb.conf defaults did not get 'fixed' into
ldap. This was a great win for admins, and this patch follows in the same way.
This patch extends the concept - we don't store values back into LDAP unless
they have been changed. So if we read a value, but don't update it, or we
read a value, find it's not there and use a default, we will not update
ldap with that value. This reduced clutter in our LDAP DB, and makes it
easier to change defaults later on.
Metze's particular problem was that when we 'write back' an unchanged value,
we would clear any muliple values in that feild. Now he can still have his
mulitivalued 'uid' feild, without Samba changing it for *every* other
operation.
This also applies to many other attributes, and helps to eliminate a nasty
race condition. (Time between get and set)
This patch is big, and needs more testing, but metze has tested usrmgr, and
I've fixed some pdbedit bugs, and tested domain joins, so it isn't compleatly
flawed ;-).
The same system will be introduced into the SAM code shortly, but this fixes
bugs that people were coming across in production uses of Samba 3.0/HEAD, hence
it's inclusion here.
Andrew Bartlett
(This used to be commit 7f237bde212eb188df84a5d8adb598a93fba8155)
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to a native NT member server. If the logoff time in the samlogon reply
is set to something else but infinity, the tree connect to the member
server comes back with 'bad uid'. In my traces, NT PDC sends
0x7fff.. always. Weird, but true.
I would really like others to double-check this. If you have questions
regarding the setup, feel free to ask!
Thanks!
Volker
(This used to be commit 066b163bde9419d32fe8ffe00c1841107357c138)
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(This used to be commit 290a304d2c1b70d20129236e20a0ff664179023e)
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distinction between uchar and char).
Lots of const etc.
Andrew Bartlett
(This used to be commit 8196ee908e10db2119e480fe1b0a71b31a16febc)
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(This used to be commit 897e64d2e0c1d04ab93441ccaffe369bf43be46e)
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like the domain name and SID come from the remote domain, not the local
one. These are filled out by the code from the previous commit (auth_util.c,
the make_server_info_info3() fn) and read back here.
Andrew Bartlett
(This used to be commit 6872de2e5b27fd2de61ed14c85475a0eacd637ca)
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initialising function. This patch thanks to the work of
"Stefan (metze) Metzmacher" <metze@metzemix.de>
This is partly to enable the transition to SIDs in the the passdb.
Andrew Bartlett
(This used to be commit 96afea638e15d4cbadc57023a511094a770c6adc)
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Kill off the silly code that attempts to do NT -> Unix username mapping.
This is done well before here, no need to repeat it.
Add some small fixes and extra debugs, trying to track down current build
farm failures.
pdb_unix:
When 'updating' a pdb_unix account, instead add it to the default passdb.
This means that you don't need to specify '-a' to smbpasswd any more when
messing with an existing unix user, the account is simply 'upgraded'.
The idea here is that these accounts are just as 'real' as any other, they
just don't have the extra attributes an smbpasswd file does.
I'm open for debate on the pdb_unix issue, and will remove it if given
good reason. (without this, an attempt to add an account already in
pdb_unix to smbpasswd would fail, as it would fail to update pdb_unix).
rpc_server/srv_netlog_nt.c
Change a couple of things around, so as to show the client workstation etc.
WRONG_PASSWORD is certainly not the right default error. Try ACCESS_DENIED
for now.
Andrew Bartlett
(This used to be commit d78b74b338df9accd9ad84c56a49fa4f787425e2)
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(This used to be commit fe099006bbd1103edb5804d70743b211bbc584fb)
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(This used to be commit 1f007d3ed41c1b71a89fa6be7d173e67e927c302)
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(This used to be commit a7fa0733badad66ae610eac5e01569cf264976f3)
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change, just in different packets.
(This used to be commit ffa6c61f0bb0c413d4bcc46da3bc879c40a40569)
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Simply add an account (smbpasswd -a -i REMOTEDOM) and join with 'user manager'
on the remote domain.
The only issue (at the auth level at least) that prevented NT4 domains from
trusting Samba was that our netlogon code was based on what appear to be
invalid assumptions.
The netlogon code appears to assume that the 'client name' specified
corrosponds to an account of the same form. This doesn't apply in trusted
domains, becouse the account is in the form domain$
Now that we use the supplied account name, and no longer make our access
control checks at the challange stage (where this info is unavailable) we
match the Win2k behaviour for invalid machine logins, and don't need to know
the names of PDCs/BDCs in trusting domains.
We also kill off the 'you logged on with a machine account, use your user
account' error message, becouse the previous NT_STATUS return was compleatly
bogus. (The ACCESS_DENIED we now return matches Win2k, and gives snane error
messages on the client).
TNG doesn't use this and has to do magic password syncs between the various
accounts for domain/pdc/bdc. This patch feels like the much more natural way
of doing things, and has been mildly tested.
Andrew Bartlett
(This used to be commit 542673fcd6654a1d0966dddadde177a4c4ce135d)
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Remove a stray 'unbecome_root()' in the ntdomain an auth failure case.
Only allow trust accounts to request a challange in srv_netlogon_nt.c.
Currently any user can be the 'machine' for the domain logon. MERGE for 2.2.
Andrew Bartlett
(This used to be commit 0242d0e17827b05d8cd270f675d2595fa67fd5b9)
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Changed "SMB/Netbios" to "SMB/CIFS" in file header.
(This used to be commit 6a58c9bd06d0d7502a24bf5ce5a2faf0a146edfa)
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calls from rpc_parse/parse_net.c - instead these values are passed as a
paramater.
Unfortunetly some there is still some samr work to be done before this is
actually useful.
Andrew Bartlett
(This used to be commit 4fc9e16ad7a77cf2e37b27640c0dec2052e9cda0)
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I *love* automated testing - this one got picked up by the build farm.
Andew Bartlett
(This used to be commit b19296172a75449a27eb9f674c74c462b146e717)
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Samba now features a pluggable passdb interface, along the same lines as the
one in use in the auth subsystem. In this case, only one backend may be active
at a time by the 'normal' interface, and only one backend per passdb_context is
permitted outside that.
This pluggable interface is designed to allow any number of passdb backends to
be compiled in, with the selection at runtime. The 'passdb backend' paramater
has been created (and documented!) to support this.
As such, configure has been modfied to allow (for example) --with-ldap and the
old smbpasswd to be selected at the same time.
This patch also introduces two new backends: smbpasswd_nua and tdbsam_nua.
These two backends accept 'non unix accounts', where the user does *not* exist
in /etc/passwd. These accounts' don't have UIDs in the unix sense, but to
avoid conflicts in the algroitmic mapping of RIDs, they use the values
specified in the 'non unix account range' paramter - in the same way as the
winbind ranges are specifed.
While I was at it, I cleaned up some of the code in pdb_tdb (code copied
directly from smbpasswd and not really considered properly). Most of this was
to do with % macro expansion on stored data. It isn't easy to get the macros
into the tdb, and the first password change will 'expand' them. tdbsam needs
to use a similar system to pdb_ldap in this regard.
This patch only makes minor adjustments to pdb_nisplus and pdb_ldap, becouse I
don't have the test facilities for these. I plan to incoroprate at least
pdb_ldap into this scheme after consultation with Jerry.
Each (converted) passdb module now no longer has any 'static' variables, and
only exports 1 init function outside its .c file.
The non-unix-account support in this patch has been proven! It is now possible
to join a win2k machine to a Samba PDC without an account in /etc/passwd!
Other changes:
Minor interface adjustments:
pdb_delete_sam_account() now takes a SAM_ACCOUNT, not a char*.
pdb_update_sam_account() no longer takes the 'override' argument that was being
ignored so often (every other passdb backend). Extra checks have been added in
some places.
Minor code changes:
smbpasswd no longer attempts to initialise the passdb at startup, this is
now done on first use.
pdbedit has lost some of its 'machine account' logic, as this behaviour is now
controlled by the passdb subsystem directly.
The samr subsystem no longer calls 'local password change', but does the pdb
interactions directly. This allow the ACB_ flags specifed to be transferred
direct to the backend, without interference.
Doco:
I've updated the doco to reflect some of the changes, and removed some paramters
no longer applicable to HEAD.
(This used to be commit ff354c99c585068af6dc1ff35a1f109a806b326b)
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These strings are allocated using talloc(), either using its own memory context
stored on the SAM_ACCOUNT or one supplied by the caller.
The pdb_init_sam() and pdb_free_sam() function have been modifed so that a call
to pdb_free_sam() will either clean up (remove hashes from memory) and destroy
the TALLOC_CTX or just clean up depending on who supplied it.
The pdb_init_sam and pdb_free_sam functions now also return an NTSTATUS, and I
have modified the 3 places that actually checked these returns.
The only nasty thing about this patch is the small measure needed to maintin
interface compatability - strings set to NULL are actually set to "".
This is becouse there are too many places in Samba that do strlen() on these
strings without checking if they are NULL pointers.
A supp patch will follow to set all strings to "" in pdb_default_sam().
Andrew Bartlett
(This used to be commit 144345b41d39a6f68d01f62b7aee64ca0d328085)
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Also more insertion of parenthesis to handle struct members called
'free'.
You can now get useful dmalloc output, as long as it is compatible
with your C library. On RH7.1 it looks like you have to rebuild
dmalloc to allow free(0) by default, because something in libcrypt
does that. (sigh)
(This used to be commit 391cbb690196537c8b6292b42c2e27408cc7e249)
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The auth_authsupplied_info typedef is now just a plain struct - auth_context,
but it has been modified to contain the function pointers to the rest
of the auth subsystem's components.
(Who needs non-static functions anyway?)
In working all this mess out, I fixed a number of memory leaks and moved the
entire auth subsystem over to talloc().
Note that the TALLOC_CTX attached to the auth_context can be rather long-lived,
it is provided for things that are intended to live as long. (The
global_negprot_auth_context lasts the whole life of the smbd).
I've also adjusted a few things in auth_domain.c, mainly passing the domain as
a paramater to a few functions instead of looking up lp_workgroup(). I'm
hopign to make this entire thing a bit more trusted domains (as PDC) freindly
in the near future.
Other than that, I moved a bit of the code around, hence the rather messy diff.
Andrew Bartlett
(This used to be commit 12f5515f556cf39fea98134fe3e2ac4540501048)
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messages were sent, so you know how many replies to expect.
Const and doc religion.
(This used to be commit 22e510ea0d69356be4fd2fa5ad9e9f4e84f62337)
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And it's in sync with the docs, %U is really replaced by the name the user
asked. Whereas in 2.2 that's false, %U is replaced by the name the user
was mapped to.
J.F.
(This used to be commit 39f2b23347011acabe9dd3ab15025022da352b74)
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- removed the ugly as hell sam_logon_in_ssb variable, I changed a bit the
definition of standard_sub_basic() to cope with that.
- removed the smb.conf: 'domain admin group' and 'domain guest group'
parameters ! We're not playing anymore with the user's group RIDs !
- in get_domain_user_groups(), if the user's gid is a group, put it first
in the group RID list.
I just have to write an HOWTO now ;-)
J.F.
(This used to be commit fef52c4b96c987115fb1818c00c2352c67790e50)
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(This used to be commit d6318add27f6bca5be00cbedf2226b642341297a)
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we need to bail here.
(This used to be commit ea0331354e5968aa0a25c0b12379a56c72d7946b)
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subystem.
The particular aim is to modularized the interface - so that we
can have arbitrary password back-ends.
This code adds one such back-end, a 'winbind' module to authenticate
against the winbind_auth_crap functionality. While fully-functional
this code is mainly useful as a demonstration, because we don't get
back the info3 as we would for direct ntdomain authentication.
This commit introduced the new 'auth methods' parameter, in the
spirit of the 'auth order' discussed on the lists. It is renamed
because not all the methods may be consulted, even if previous
methods fail - they may not have a suitable challenge for example.
Also, we have a 'local' authentication method, for old-style
'unix if plaintext, sam if encrypted' authentication and a
'guest' module to handle guest logins in a single place.
While this current design is not ideal, I feel that it does
provide a better infrastructure than the current design, and can
be built upon.
The following parameters have changed:
- use rhosts =
This has been replaced by the 'rhosts' authentication method,
and can be specified like 'auth methods = guest rhosts'
- hosts equiv =
This needs both this parameter and an 'auth methods' entry
to be effective. (auth methods = guest hostsequiv ....)
- plaintext to smbpasswd =
This is replaced by specifying 'sam' rather than 'local'
in the auth methods.
The security = parameter is unchanged, and now provides defaults
for the 'auth methods' parameter.
The available auth methods are:
guest
rhosts
hostsequiv
sam (passdb direct hash access)
unix (PAM, crypt() etc)
local (the combination of the above, based on encryption)
smbserver (old security=server)
ntdomain (old security=domain)
winbind (use winbind to cache DC connections)
Assistance in testing, or the production of new and interesting
authentication modules is always appreciated.
Andrew Bartlett
(This used to be commit 8d31eae52a9757739711dbb82035a4dfe6b40c99)
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This changes the way we process guest logons - we now treat them as normal
logons, but set the 'guest' flag. In particular this is needed becouse Win2k
will do an NTLMSSP login with username "", therefore missing our previous guest
connection code - this is getting a pain to do as a special case all over the
shop.
Tridge: We don't seem to be setting a guest bit for NTLMSSP, in either the
anonymous or authenticated case, can you take a look at this?
Also some cleanups in the check_password() code that should make some of the
debugs clearer.
Various other minor cleanups:
- change the session code to just take a vuser, rather than having to do a
vuid lookup on vuser.vuid
- Change some of the global_client_caps linking
- Better debug in authorise_login(): show the vuid.
Andrew Bartlett
(This used to be commit 62f4e4bd0aef9ade653b3f8d575d2864c166ab4d)
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(This used to be commit 8004cfea19e10ad942c59f2f6a6bd992791017ba)
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Zero out some of the plaintext passwords for paranoia
Fix up some of the other passdb backends with the change to *uid_t rather than
uid_t.
Make some of the code in srv_netlog_nt.c clearer, is passing an array around,
so pass its lenght in is definition, not as a seperate paramater.
Use sizeof() rather than magic numbers, it makes things easier to read.
Cope with a PAM authenticated user who is not in /etc/passwd - currently by
saying NO_SUCH_USER, but this can change in future.
Andrew Bartlett
(This used to be commit 514c91b16baca639bb04638042bf9894d881172a)
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(This used to be commit c8b2718adfe114b74a155116c5e74f014d6df887)
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code.
In particular this assists tpot in some of his work, becouse it provides the
connection between the authenticaion and the vuid generation.
Major Changes:
- Fully malloc'ed structures.
- Massive rework of the code so that all structures are made and destroyed
using malloc and free, rather than hanging around on the stack.
- SAM_ACCOUNT unix uids and gids are now pointers to the same, to allow them
to be declared 'invalid' without the chance that people might get ROOT by
default.
- kill off some of the "DOMAIN\user" lookups. These can be readded at a more
appropriate place (probably domain_client_validate.c) in the future. They
don't belong in session setups.
- Massive introduction of DATA_BLOB structures, particularly for passwords.
- Use NTLMSSP flags to tell the backend what its getting, rather than magic
lenghths.
- Fix winbind back up again, but tpot is redoing this soon anyway.
- Abstract much of the work in srv_netlog_nt back into auth helper functions.
This is a LARGE change, and any assistance is testing it is appriciated.
Domain logons are still broken (as far as I can tell) but other functionality
seems
intact.
Needs testing with a wide variety of MS clients.
Andrew Bartlett
(This used to be commit f70fb819b2f57bd57232b51808345e2319d52f6c)
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To obtain the full group membership of a user (i.e nested groups on a
win2k native mode server) it is necessary to merge this list of groups
with the groups returned by winbindd when creating an nt access token.
This breaks winbindd linking while AB and I sync up our changes to the
authentication subsystem.
(This used to be commit 4eeb7bcd783d7cfb3ac232f1faa035773007401d)
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In particular this commit focuses on:
Actually adding the 'const' to the passdb interface, and the flow-on changes.
Also kill off the 'disp_info' stuff, as its no longer used.
While these changes have been mildly tested, and are pretty small, any
assistance in this is appreciated.
----
These changes introduces a large dose of 'const' to the Samba tree.
There are a number of good reasons to do this:
- I want to allow the SAM_ACCOUNT structure to move from wasteful
pstrings and fstrings to allocated strings. We can't do that if
people are modifying these outputs, as they may well make
assumptions about getting pstrings and fstrings
- I want --with-pam_smbpass to compile with a slightly sane
volume of warnings, currently its pretty bad, even in 2.2
where is compiles at all.
- Tridge assures me that he no longer opposes 'const religion'
based on the ability to #define const the problem away.
- Changed Get_Pwnam(x,y) into two variants (so that the const
parameter can work correctly): - Get_Pwnam(const x) and
Get_Pwnam_Modify(x).
- Reworked smbd/chgpasswd.c to work with these mods, passing
around a 'struct passwd' rather than the modified username
---
This finishes this line of commits off, your tree should now compile again :-)
Andrew Bartlett
(This used to be commit c95f5aeb9327347674589ae313b75bee3bf8e317)
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In particular this commit focusses on:
Adding the new 'pass changed now' helper function.
While these changes have been mildly tested, and are pretty small, any
assistance in this is appreciated.
(This used to be commit a8971a5448cf6d203b379c3ed01e331d5263c9ee)
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Ensure make_conection() can only be called as root.
Jeremy.
(This used to be commit 8d23a7441b4687458ee021bfe8880558506eddba)
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(This used to be commit 2d0922b0eabfdc0aaf1d0797482fef47ed7fde8e)
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