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This crypto is incredibly poor, and can technically be enabled on an otherwise more
secure connection that uses NTLM for the actual authentication leg. Therefore
disable it by default.
Andrew Bartlett
Signed-off-by: Stefan Metzmacher <metze@samba.org>
This is possible because we now supply the auth4_context abstraction that this
code is looking for.
Andrew Bartlett
Signed-off-by: Stefan Metzmacher <metze@samba.org>
This avoids creating a second auth_context, as it is a private pointer
in the auth4_context that has already been passed in, and makes the
gensec_ntlmssp code agnostic to the type of authentication backend
behind it. This will in turn allow the ntlmssp server code to be
further merged.
Andrew Bartlett
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Replaced the undescriptive SMB_PORT1 and SMB_PORT2 defined constants
with the slightly more descriptive names NBT_SMB_PORT and TCP_SMB_PORT.
Also replaced several hard-coded references to the well-known port
numbers (139 and 445, respectively) as appropriate.
Small changes to clarify some comments regarding the two transport
types.
Signed-off-by: Simo Sorce <idra@samba.org>
Autobuild-User: Simo Sorce <idra@samba.org>
Autobuild-Date: Thu Feb 16 08:29:41 CET 2012 on sn-devel-104
Originally, only the rid array was filled and foreign domain sids were omitted.
Pair-Programmed-With: Michael Adam <obnox@samba.org>
metze
Autobuild-User: Stefan Metzmacher <metze@samba.org>
Autobuild-Date: Thu Feb 2 12:59:32 CET 2012 on sn-devel-104
gensec_ntlmssp does not need to know the internal form of the
struct user_info_dc or auth_serversupplied_info. This will allow the
calling logic to be put in common.
Andrew Bartlett
This is causing circular depdnendcies that bring libpdb in all code and this is
BAD.
This change 'protects' the sid and guid of the domain by adding a special key
that makes them effectively read only.
Limit this temporarily to the samba 4 build, once it gets some good testing the
samba4 ifdefs can be dropped.
fix pdb dependencies
Signed-off-by: Andreas Schneider <asn@samba.org>
This matches the auth_ntlmssp case and the smbd/sesssetup.c code.
metze
Autobuild-User: Stefan Metzmacher <metze@samba.org>
Autobuild-Date: Thu Jan 26 17:58:17 CET 2012 on sn-devel-104
This simplifies a lot of code, as we know we are always dealing with a
struct gensec_security, and allows the gensec module being used to
implement GSSAPI to be swapped when required for AD-server operation.
Andrew Bartlett
Signed-off-by: Stefan Metzmacher <metze@samba.org>
This will allow non-krb5 services to get the full user groups
without need to do an online s4u2self.
Andrew Bartlett
Signed-off-by: Stefan Metzmacher <metze@samba.org>
This will allow gensec_gse to parse the PAC.
This is a copy from source3/rpc_server/dcesrv_generic.c to preserve
behaviour. A future commit will enable the samlogon cache.
Andrew Bartlett
Signed-off-by: Stefan Metzmacher <metze@samba.org>
This is possible because the s3 gensec modules are started as
normal gensec modules, so we do not need a wrapper any more.
Andrew Bartlett
Signed-off-by: Stefan Metzmacher <metze@samba.org>
This makes the long term owner of this memory more clear. So far only the
clear cases have been moved from NULL however.
Andrew Bartlett
Signed-off-by: Stefan Metzmacher <metze@samba.org>
This will allow the supply of multiple modules in future
without duplicating the module selection logic.
Andrew Bartlett
Signed-off-by: Stefan Metzmacher <metze@samba.org>
This function handles more than NTLMSSP now, at least when we are an AD DC
and so changing the name may avoid some confusion in the future.
Andrew Bartlett
Signed-off-by: Stefan Metzmacher <metze@samba.org>
This structure handles more than NTLMSSP now, at least when we are an AD DC
and so changing the name may avoid some confusion in the future.
Andrew Bartlett
Signed-off-by: Stefan Metzmacher <metze@samba.org>
This was lost when the server_info and session_info structures were split.
This helps avoid doing lookups for the guest account to determine the
uid/gid and SID values.
Andrew Bartlett
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Autobuild-User: Stefan Metzmacher <metze@samba.org>
Autobuild-Date: Thu Dec 22 15:51:09 CET 2011 on sn-devel-104
Change some misleading variable names to reflect the actual function.
Add missing field name/types previously marked as unkown.
Signed-off-by: Günther Deschner <gd@samba.org>
Autobuild-User: Günther Deschner <gd@samba.org>
Autobuild-Date: Mon Oct 24 19:19:28 CEST 2011 on sn-devel-104
We do not need it on the auth_ntlmssp_state any longer.
Andrew Bartlett
Autobuild-User: Andrew Bartlett <abartlet@samba.org>
Autobuild-Date: Tue Oct 18 13:54:36 CEST 2011 on sn-devel-104
This avoids keeping the event context around on a the gensec_security
context structure long term.
In the Samba3 server, the event context we either supply is a NULL
pointer as no server-side modules currently use the event context.
Andrew Bartlett
Signed-off-by: Stefan Metzmacher <metze@samba.org>
This uses the top level gensec_ntlmssp helper functions which are identical
to the parts of ntlmssp_wrap.c that are now not called.
(Includes formatting and correctness fixes from Metze)
Andrew Bartlett
Signed-off-by: Stefan Metzmacher <metze@samba.org>
This will allow gensec_start.c to move to the top level. This does not change
what code uses the cli_credentials code, but allows the gensec code to be
more broadly.
Andrew Bartlett
this allows the s3 code to understand and cache responses from the s4
winbindd which may include a single SID mapped to both a uid and a gid
Pair-Programmed-With: Andrew Bartlett <abartlet@samba.org>
Signed-off-by: Michael Adam <obnox@samba.org>
Autobuild-User: Michael Adam <obnox@samba.org>
Autobuild-Date: Fri Sep 23 01:47:54 CEST 2011 on sn-devel-104
group_sids_to_info3 does a sid_peek_check_rid on the domain sid before adding
the rids to the array. If the domain sid is 0x0, then the check will always
fail.
Autobuild-User: Volker Lendecke <vlendec@samba.org>
Autobuild-Date: Sat Sep 17 00:51:27 CEST 2011 on sn-devel-104
Makes the code match what is currently in 3.6.x.
Autobuild-User: Jeremy Allison <jra@samba.org>
Autobuild-Date: Mon Sep 12 22:21:24 CEST 2011 on sn-devel-104
There is no longer any theft of memory as the underlying routines now
produce a new auth_session_info for this caller, allocating it
on the supplied memory context.
Andrew Bartlett
This structure element was only written to, not read.
It is filled into the companion structure, auth_session_info()
by create_local_token().
Andrew Bartlett
Signed-off-by: Andrew Tridgell <tridge@samba.org>
Rather than passing this value around the callers, and eventually
setting it in register_existing_vuid(), we simply pass it to
create_local_token(). This also removes the need for
auth_ntlmssp_get_username().
Andrew Bartlett
Signed-off-by: Andrew Tridgell <tridge@samba.org>
This helps map on to the GENSEC semantics better, and ensures that the
full set of desired features are set before the mechanism starts.
Andrew Bartlett
Signed-off-by: Andrew Tridgell <tridge@samba.org>
GENSEC has the concept of starting the GENSEC subsystem before starting the
actual mechansim. Between these two stages is when most context methods
are called, to specify credentials and features.
Andrew Bartlett
Signed-off-by: Andrew Tridgell <tridge@samba.org>
This allows the current behaviour of the NTLMSSP code to be unchanged
while adding a way to hook in an alternate implementation via an auth
module.
Andrew Bartlett
Signed-off-by: Andrew Tridgell <tridge@samba.org>
This will allow auth plugins such as auth_samba4 to provide an initialised
GENSEC context to auth subsystem callers.
Andrew Bartlett
Signed-off-by: Andrew Tridgell <tridge@samba.org>
This means we no longer need two different map to guest functions
and have consistent logic with fewer layering violations.
Andrew Bartlett
Signed-off-by: Andrew Tridgell <tridge@samba.org>
All other auth modules code with being called with
auth_method->private_data being NULL, make the auth_server
module cope with this too.
Autobuild-User: Jeremy Allison <jra@samba.org>
Autobuild-Date: Sat Jul 23 02:55:01 CEST 2011 on sn-devel-104
All the callers allocate ->info3 as a talloc child already.
As regardes the TALLOC_ZERO(), I added this originally out of parinoia
many years ago. We do not consistantly zero session keys in memory,
and for NTLMv2 and Kerberos they are random for each sesssion, so
breaking into smbd far enough to read an old session key isn't a
particularly interesting attack, compared with (say) reading the
keytab or the password database. (NTLM and LM session keys are fixed
derivitives of the passwords however).
Andrew Bartlett
Instead, we base our guest calculations on the presence or absense of the
authenticated users group in the token, ensuring that we have only
one canonical source of this important piece of authorization data
Andrew Bartlett
Signed-off-by: Andrew Tridgell <tridge@samba.org>
These additional measures should help ensure we do not accidentily upgrade
a guest to an authenticated user in the future.
Andrew Bartlett
Signed-off-by: Andrew Tridgell <tridge@samba.org>
This will allow the source3 auth code to call this without needing to
double-parse the SIDs
Andrew Bartlett
Signed-off-by: Andrew Tridgell <tridge@samba.org>
This patch finally has the same structure being used to describe the
authorization data of a user across the whole codebase.
This will allow of our session handling to be accomplished with common code.
Andrew Bartlett
Signed-off-by: Andrew Tridgell <tridge@samba.org>
This makes auth3_session_info identical to auth_session_info
The logic to convert the info3 to a struct auth_user_info is
essentially moved up the stack from the named pipe proxy in
source3/rpc_server to create_local_token().
Andrew Bartlett
Signed-off-by: Andrew Tridgell <tridge@samba.org>
This allows us not the put all of these elements into the auth3_session_info
if they are only used as inputs to these functions.
Andrew Bartlett
Signed-off-by: Andrew Tridgell <tridge@samba.org>
The long term authorization state needs only the final, negotiated
session key, and not the original LM key that may possibly have been
an input.
The special case of the guest account simply needs both values filled
back in with the zeros to avoid changing behaviour in the cached
server_info.
Signed-off-by: Andrew Tridgell <tridge@samba.org>
This brings this structure one step closer to the struct auth_session_info.
A few SMB_ASSERT calls are added in some key places to ensure that
this pointer is initialised, to make tracing any bugs here easier in
future.
NOTE: Many of the users of this structure should be reviewed, as unix
and NT access checks are mixed in a way that should just be done using
the NT ACL. This patch has not changed this behaviour however.
Andrew Bartlett
Signed-off-by: Andrew Tridgell <tridge@samba.org>
This seperation between the structure used inside the auth modules and
in the wider codebase allows for a gradual migration from struct
auth_serversupplied_info -> struct auth_session_info (from auth.idl)
The idea here is that we keep a clear seperation between the structure
before and after the local groups, local user lookup and the session
key modifications have been processed, as the lack of this seperation
has caused issues in the past.
Andrew Bartlett
Signed-off-by: Andrew Tridgell <tridge@samba.org>
This will allow a gradual conversion of the required elements from the
current struct auth_serversupplied_info.
This commit adds the structure definition and some helper functions to
copy between the two structures.
At this stage these structures and functions are IDENTICAL to the
existing code, and so show the past history of that code. The plan is
to slowly modify them over the course of the patch series, so that the
changes being made a clear.
By using a seperate structure to auth_serversupplied_info we can
remove elements that are not needed after the authentication, and we
can choose a layout that best reflects the needs of runtime users,
rather than the internals of the authentication subsystem.
By eventually using the auth_session_info from auth.idl, we will gain
a single session authorization structure across the whole codebase,
allowing more code to be shared, and a much more transparent process
for forwarding authorization credentials over the named pipe proxy.
Andrew Bartlett
Signed-off-by: Andrew Tridgell <tridge@samba.org>
The implementation of copy_serverinfo(), used to copy server_info into
session_info never copied the nss_token variable, and so
17d8f0ad30 introduced this regression.
Andrew Bartlett
Signed-off-by: Andrew Tridgell <tridge@samba.org>
Remove
int toupper_ascii(int c);
int tolower_ascii(int c);
int isupper_ascii(int c);
int islower_ascii(int c);
and replace with their _m equivalents, as they are identical.
This specifies some more deps for our modules, and ensures that the
subsystem that it links against is in fact a library, which will avoid
issues with introducing duplicate symbols.
Andrew Bartlett
I've got a backtrace where this must have failed, but it is not clear why. If
this fails, we should really complain because we can't start up.
Autobuild-User: Volker Lendecke <vlendec@samba.org>
Autobuild-Date: Wed Jun 15 15:20:49 CEST 2011 on sn-devel-104
There is no reason this can't be a normal constant string in the
loadparm system, now that we have lp_set_cmdline() to handle overrides
correctly.
Andrew Bartlett
With the recent consolidation of code between s3 and s4, a number of new
dependencies have been implicitly introduced. For example, previous s3
code gained an implicit dependency on talloc after the charset related
consolidation (lib/util/charset/charset.h now includes talloc.h). When
building against the embedded version of talloc this isn't a problem
since the paths are automatically added to the search path, but when
building against the external libraries build failures will occur for
all components that don't directly or indirectly include talloc as
a dependency.
Since charset.h is included from util.h, which in turn is included from
includes.h, this means most of the codebase (s3 and s4) has such an
undeclared dependency.
Therefore, samba-util-common and samba-util have been added as
dependencies to the s3 and s4 code respectively, for all cases where
the source would otherwise fail to build. Additionally, a few other
dependencies are added in specific wscript_build files to address
similar dependency-related problems.
https://bugzilla.samba.org/show_bug.cgi?id=8128
Signed-off-by: Sean Finney <seanius@seanius.net>
Signed-off-by: Matthias Dieter Wallnöfer <mdw@samba.org>
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Autobuild-User: Matthias Dieter Wallnöfer <mdw@samba.org>
Autobuild-Date: Wed May 25 19:22:13 CEST 2011 on sn-devel-104
This module makes a direct call into the Samba4 auth stack to
authenticate Samba4 uses in a Samba3 file server. The direct call
avoids the need to obtain schannel credentials.
Andrew Bartlett
Pair-Programmed-With: Andrew Tridgell <tridge@samba.org>
Andreas Schneider <asn@samba.org> correctly points out that this input
parameter should now be const, and that found a bug where I used then
used it incorrectly as a talloc context.
Andrew Bartlett
Autobuild-User: Andrew Bartlett <abartlet@samba.org>
Autobuild-Date: Wed Apr 6 00:33:31 CEST 2011 on sn-devel-104
Before a auth_serversupplied_info struct can be used for
authorization, the local groups and privileges must be calculated.
create_local_token() now copies the server_info, and then sets the
calulated token and unix groups.
Soon, it will also transform the result into an expanded struct
auth_session_info. Until then, the variable name (server_info vs
session_info provides a clue to the developer about what information
has been entered in the structure).
By moving the calls to create_local_token within the codebase, we
remove duplication, and ensure that the session key (where modified)
is consistently copied into the new structure.
Andrew Bartlett
Abartlet, this commit makes check_sam_security_info3 use talloc_tos() and also
cleans up the temporary talloc stackframe.
The old code created a temporary talloc context off "mem_ctx" but failed to
clean up the tmp_ctx in all but one return paths.
talloc_stackframe()/talloc_tos() is designed as a defense against exactly this
error: Even if we failed to free the frame when returning from the routine, it
would be cleaned up very soon, in our main event loop.
Please check this patch!
Thanks,
Volker
Autobuild-User: Volker Lendecke <vlendec@samba.org>
Autobuild-Date: Sat Mar 5 14:08:37 CET 2011 on sn-devel-104
These variables, of type struct auth_serversupplied_info were poorly
named when added into 2001, and in good consistant practice, this has
extended all over the codebase in the years since.
The structure is also not ideal for it's current purpose. Originally
intended to convey the results of the authentication modules, it
really describes all the essential attributes of a session. This
rename will reduce the volume of a future patch to replaced these with
a struct auth_session_info, with auth_serversupplied_info confined to
the lower levels of the auth subsystem, and then eliminated.
(The new structure will be the output of create_local_token(), and the
change in struct definition will ensure that this is always run, populating
local groups and privileges).
Andrew Bartlett
Signed-off-by: Stefan Metzmacher <metze@samba.org>
this brings the s3 waf build much closer to the proposed s3build top
level build, using the same bld.SAMBA3_*() rules
There are a few renames of subsystems in here, with a 3 suffix where
it would create a conflict.
Pair-Programmed-With: Andrew Bartlett <abartlet@samba.org>
In these cases, the server_info was not stolen onto a long term memory
context, and so remained on the NULL context where it was created.
Andrew Bartlett
Autobuild-User: Andrew Bartlett <abartlet@samba.org>
Autobuild-Date: Wed Feb 16 01:08:19 CET 2011 on sn-devel-104
This will allow the auth_serversupplied_info struct to be migrated
to auth_session_info easier.
Adnrew Bartlett
Signed-off-by: Andrew Tridgell <tridge@samba.org>
The benefit of this that it makes us more robust to secure channel resets
triggered from tools outside the winbind process. Long term we need to have a
shared tdb secure channel store though as well.
Guenther
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Autobuild-User: Stefan Metzmacher <metze@samba.org>
Autobuild-Date: Fri Feb 4 18:11:04 CET 2011 on sn-devel-104
There are cases where we fill in params.password.response.lm_data with non-NULL
where params.password.response.lm_length is 0. wbcAuthenticateUserEx does not
like that.
I haven't been able to reproduce this with smbclient yet, I've seen it with a
proprietary smb client implementation.
Autobuild-User: Volker Lendecke <vlendec@samba.org>
Autobuild-Date: Mon Jan 17 16:30:11 CET 2011 on sn-devel-104
The only condition that cli_full_connection marks as non-retryable is the basic
name lookup and TCP connect. To me this is pretty fishy. For example if the
negprot fails, this is supposed to be more retryable than a NetBIOS name lookup
failure? I'd rather think the opposite is true.
Jeremy, this is code from 2002, 389a16d9d5. If you have any comments from
back then, let me know :-)
Volker
This finally allows mixed case module names like the classic build
(./configure --shared_modules=charset_CP850)
Guenther
Autobuild-User: Günther Deschner <gd@samba.org>
Autobuild-Date: Wed Dec 1 18:39:14 CET 2010 on sn-devel-104
This happens if you set "auth methods = winbind" without a fallback method.
The return NT_STATUS_LOGON_FAILURE; is not strictly require here, because we
fall through to the equivalent statement a few lines down, but it makes the
code a bit clearer IMO.
Autobuild-User: Volker Lendecke <vlendec@samba.org>
Autobuild-Date: Tue Nov 9 20:15:59 UTC 2010 on sn-devel-104
through Get_Pwnam_alloc(), which is the correct wrapper function. We were using
it *some* of the time anyway, so this just makes us properly consistent.
Jeremy.
Autobuild-User: Jeremy Allison <jra@samba.org>
Autobuild-Date: Wed Oct 20 16:02:12 UTC 2010 on sn-devel-104
This prints the security token including the privileges as strings
instead of just a bitmap.
Andrew Bartlett
Signed-off-by: Andrew Tridgell <tridge@samba.org>
The wrapper call is left here to avoid changing semantics for
the NULL parameter case.
Andrew Bartlett
Signed-off-by: Andrew Tridgell <tridge@samba.org>
This will reduce the noise from merges of the rest of the
libcli/security code, without this commit changing what code
is actually used.
This includes (along with other security headers) dom_sid.h and
security_token.h
Andrew Bartlett
Autobuild-User: Andrew Bartlett <abartlet@samba.org>
Autobuild-Date: Tue Oct 12 05:54:10 UTC 2010 on sn-devel-104
Without this, all security descriptor checks for the winreg spoolss backend fail
and make our spoolss system in its current shape basically unusable.
Andreas, please check.
Guenther
The previous API was not clear as to who owned the returned session key.
This fixes a valgrind-found use-after-free in the NTLMSSP key derivation code,
and avoids making allocations - we steal and zero instead.
Andrew Bartlett
Signed-off-by: Andrew Tridgell <tridge@samba.org>
The all UPPER case typedef is no longer the preferred Samba style
and this makes it easier to see that this is the IDL-derivied structure
Andrew Bartlett
Signed-off-by: Andrew Tridgell <tridge@samba.org>
size_t is overkill here, and in struct security_token in the num_sids
is uint32_t.
This includes a change to the prototype of add_sid_to_array()
and add_sid_to_array_unique(), which has had a number of
consequnetial changes as I try to sort out all the callers using
a pointer to the number of sids.
Andrew Bartlett
Signed-off-by: Andrew Tridgell <tridge@samba.org>
