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it can be used for 'net rpc join'.
Also fix a bug in our server-side NTLMSSP code - a client without any domain
trust links to us may calculate the NTLMv2 response with "" as the domain.
Andrew Bartlett
Controller. As we have had a number of attempts at this over the last little
while, I need to get my test rig going, and give this whole area a poke...
Meanwhile, if you want to use this, just adjust your 'auth methods' line to use
samstrict_dc...
Andrew Bartlett
routines). In particular, we now better support the NT# in LM feild, and the
LMv2 password scheme. (LMv2 is basicly NTLMv2 capped at 24 bytes, slightly
more secure, and in the LM feild for compatiblity).
Thanks to the Samba-TNG team and Luke Leighton for various descriptions of this
algorithm, and to MS for a solution that seems to actually make sense for once
:-).
Andrew Bartlett
- add static remove unnneded prototype
- move become_root() to just around pdb calls, so as to make it easier to
remove when we kill off this silly idea
- Change auth_sam to do 'account before password' rather than 'password before
account'. This means that we match Win2k in giving 'account disabled' instead
of 'wrong password' if the wrong password to a disabled account is used.
Andrew Bartlett
- Don't print an uninitialised buffer in service.c
- Change some charcnv.c functions to take smb_ucs2_t ** instead of void **
- Update NTLMv2 code to use dynamic buffers
- Update experimental SMB signing code - still more work to do
- Move sys_getgrouplist() to SAFE_FREE() and do a DEBUG() on initgroups()
failure.
Andrew Bartlett
our authenticaion code - removing some of the duplication from the current
code.
This also gets us *much* closer to supporting a real SAM backend, becouse the
SAM can give us the right info then.
This also changes our service.c code, so that we do a VUID (rather than uid)
cache on the connection struct, and do full NT ACL/NT_TOKEN checks (or cached
equivilant) on every packet, for the same r or rw mode the whole share was open
for.
Andrew Bartlett
authentication - we can have an NT hash in the LM hash feild.
(I need to double-check this fix with tpot, who discovered it).
Also remove silly casts back and forth between uchar and char.
Andrew Bartlett
that the passdb code now uses. Similarly, move the 'pluggable' stuff
over from passdb as well, allowing runtime loading of new authenticaion
modules.
(NOTE: The interfaces here can *and do* change - module writers are
not assured source-level compatibilty, and certainly not binary
compatibility).
Also set the default value of all the allocated strings to "" to avoid changing
the interface (becouse pdb_get...() would point to a null string, rather than a
null pointer and parts of samba rely on that).
Andrew Bartlett
Replace this with some flags that *we* define. We can do a mapping later
if we actually get some more reliable info about what passwords are actually
valid.
Andrew Bartlett
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
- Move rpc_client/cli_trust.c to smbd/change_trust_pw.c
- It hasn't been used by anything else since smbpasswd lost its -j
- Add a TALLOC_CTX to the auth subsytem. These are only valid for the length
of the calls to the individual modules, if you want a longer context hide it
in your private data.
Similarly, all returns (like the server_info) should still be malloced.
- Move the 'ntdomain' module (security=domain in oldspeak) over to use the new
libsmb domain logon code. Also rework much of the code to use some better
helper functions for the connection - getting us much better error returns
(the new code is NTSTATUS).
The only remaining thing to do is to figure out if tpot's 0xdead 0xbeef for
the LUID feilds is sufficient, or if we should do random LUIDs as per the old
code.
Similarly, I'll move winbind over to this when I get a chance.
This leaves the SPOOLSS code and some cli_pipe code as the only stuff still in
rpc_client, at least as far as smbd is concerned.
While I've given this a basic rundown, any testing is as always appriciated.
Andrew Bartlett
We now default encrypt passwords = yes
We now check plaintext passwords (however aquired) with the 'sam' backend
rather than unix, if encrypt passwords = yes.
(this kills off the 'local' backed. The sam backend may be renamed in its
place)
The new 'samstrict' wrapper backend checks that the user's domain is one of
our netbios aliases - this ensures that we don't get fallback crazies with
security = domain.
Similarly, the code in the 'ntdomain' and 'smbserver' backends now checks
that the user was not local before contacting the DC.
The default ordering has changed, we now check the local stuff first - but
becouse of the changes above, we will really only ever contact one
auth source.
Andrew Bartlett
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
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
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
The big one is a global change to allow us to NULLify the free'ed pointer to a
former passdb object. This was done to allow idra's SAFE_FREE() macro to do
its magic, and to satisfy the input test in pdb_init_sam() for a NULL pointer
to start with.
This NULL pointer test was what was breaking the adding of accounts up until
now, and this code has been reworked to avoid duplicating work - I hope this
will avoid a similar mess-up in future.
Finally, I fixed a few nasty bugs where the pdb_ fuctions's return codes were
being ignored. Some of these functions malloc() and are permitted to fail.
Also, this caught a nasty bug where pdb_set_lanman_password(sam, NULL) acheived
precisely didilly-squat, just returning False. Now that we check the returns
this bug was spotted. This could allow different LM and NT passwords.
- the pdbedit code needs to start checking these too, but I havn't had a
chance to fix it.
I have also fixed up where some of the password changing code was using the
pdb_set functions to store *internal* data. I assume this is from a previous
lot of mass conversion work...
Most likally (and going on past experience) I have missed somthing, probably in
the LanMan password change code which I havn't yet been able to test, but this
lot is in much better shape than it was before.
If all this is too much to swallow (particularly for 2.2.2) then just adding a
sam_pass = NULL to the particular line of passdb.c should do the trick for the
ovbious bug.
Andrew Bartlett
they can have general effect.
Fixed up workstaion support in the rest of samba, so that we can do these
checks.
Pass through the workstation for cli_net_logon(), if supplied.
- the usersupplied_info now contains a smb_username (as it comes across on
the wire) and a unix_username (after being passed through mapping
functions)
- when doing security={server,domain} use the smb_username, otherwise use
the unix_username
In particuar, it moves the domain_client_validate stuff out of
auth_domain.c to somwhere where they (I hope) they can be shared
with winbind better. (This may need some work)
The main purpose of this patch was however to improve some of the
internal documentation and to correctly place become_root()/unbecome_root()
calls within the code.
Finally this patch moves some more of auth.c into other files, auth_unix.c
in this case.
Andrew Bartlett
