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Commit Graph

222 Commits

Author SHA1 Message Date
Andreas Schneider
06940155f3 s3:smbd: Fix size types in reply_negprot()
This fixes compilation with -Wstrict-overflow=2.

Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2018-04-03 20:20:10 +02:00
Andreas Schneider
a89a714656 s3:smbd: Do not crash if we fail to init the session table
This should the following segfault with SMB1:

  #6  sig_fault (sig=<optimized out>) at ../lib/util/fault.c:94
  #7  <signal handler called>
  #8  smbXsrv_session_create (conn=conn@entry=0x5654d3512af0, now=now@entry=131594481900356690, _session=_session@entry=0x7ffc93a778e8)
      at ../source3/smbd/smbXsrv_session.c:1212
  #9  0x00007f7618aa21ef in reply_sesssetup_and_X (req=req@entry=0x5654d35174b0) at ../source3/smbd/sesssetup.c:961
  #10 0x00007f7618ae17b0 in switch_message (type=<optimized out>, req=req@entry=0x5654d35174b0) at ../source3/smbd/process.c:1726
  #11 0x00007f7618ae3550 in construct_reply (deferred_pcd=0x0, encrypted=false, seqnum=0, unread_bytes=0, size=140, inbuf=0x0, xconn=0x5654d35146d0)
      at ../source3/smbd/process.c:1762
  #12 process_smb (xconn=xconn@entry=0x5654d3512af0, inbuf=<optimized out>, nread=140, unread_bytes=0, seqnum=0, encrypted=<optimized out>,
      deferred_pcd=deferred_pcd@entry=0x0) at ../source3/smbd/process.c:2008
  #13 0x00007f7618ae4c41 in smbd_server_connection_read_handler (xconn=0x5654d3512af0, fd=40) at ../source3/smbd/process.c:2608
  #14 0x00007f761587eedb in epoll_event_loop_once () from /lib64/libtevent.so.0

Inspection the core shows that:
  conn->client-session_table is NULL
  conn->protocol is PROTOCOL_NONE

BUG: https://bugzilla.samba.org/show_bug.cgi?id=13315

Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2018-03-02 00:39:59 +01:00
Stefan Metzmacher
502aa78704 s3:smbd: remove deprecated 'use spnego = no" handling
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
2018-01-10 01:01:24 +01:00
Volker Lendecke
41cfc737df lib: Remove unused serverid.tdb
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>

Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Tue Dec  5 04:58:26 CET 2017 on sn-devel-144
2017-12-05 04:58:26 +01:00
Andrew Bartlett
85536c1ff3 auth: Always supply both the remote and local address to the auth subsystem
This ensures that gensec, and then the NTLM auth subsystem under it, always gets the
remote and local address pointers for potential logging.

The local address allows us to know which interface an authentication is on

Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Pair-Programmed-by: Gary Lockyer <gary@catalyst.net.nz>
Signed-off-by: Gary Lockyer <gary@catalyst.net.nz>
2017-03-29 02:37:26 +02:00
Andrew Bartlett
d82ac32eb7 s3-auth: Pass service_description into gensec via auth_generic_prepare()
This allows the GENSEC service description to be set from the various callers
that go via this function.

The RPC service description is the name of the interface from the IDL.

Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Pair-Programmed-by: Gary Lockyer <gary@catalyst.net.nz>
Signed-off-by: Gary Lockyer <gary@catalyst.net.nz>
2017-03-29 02:37:25 +02:00
Volker Lendecke
cf9acf9a3d smbd: Do an early exit on negprot failure
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12610

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Böhme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2017-03-03 02:24:09 +01:00
Stefan Metzmacher
c207f2a989 s3:smbd: allow "server min protocol = SMB3_00" to go via "SMB 2.???" negprot
BUG: https://bugzilla.samba.org/show_bug.cgi?id=12540

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
2017-01-27 08:09:15 +01:00
Christof Schmitt
ced3bcfb63 smbd: Adjust debug level of "No protocol supported" message
SMB clients only supporting SMB1 connecting to a Samba server that only
accepts SMB protocol versions 2 and 3 can spam the logs with the "No
protocol supported" message. This is useful information for debugging
failed connection attempts, but it should not be in the default log.
Adjust it to NOTICE/3.

Signed-off-by: Christof Schmitt <cs@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
2016-09-10 14:57:11 +02:00
Stefan Metzmacher
5cb4ee27f8 CVE-2016-2114: s3:smbd: use the correct default values for "smb signing"
This means an ad_dc will now require signing by default.
This matches the default behavior of Windows dc and avoids
man in the middle attacks.

The main logic for this hides in lpcfg_server_signing_allowed().

BUG: https://bugzilla.samba.org/show_bug.cgi?id=11687

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
2016-04-12 19:25:25 +02:00
Justin Maggard
d7ca174744 s3:smbd: add negprot remote arch detection for OSX
Remote arch detection for OSX clients has been broken for some time, since
both Samba and OSX started supporting SMB2.  Fix it by adding modern OSX
client detection support to the negprot remote arch detection routine.

Signed-off-by: Justin Maggard <jmaggard10@gmail.com>
Reviewed-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Ralph Boehme <rb@sernet.de>

Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Thu Mar  3 09:03:53 CET 2016 on sn-devel-144
2016-03-03 09:03:53 +01:00
Justin Maggard
b69b96fc14 s3:smbd: rework negprot remote arch detection
Negprot remote arch detection is very cryptic.  Rework it so it's easier
to understand, and therefore more extensible, following the protocol table
in inline comments.  This also allows us to remove some hacks.

Signed-off-by: Justin Maggard <jmaggard10@gmail.com>
Reviewed-by: Ralph Boehme <rb@sernet.de>
Reviewed-by: Jeremy Allison <jra@samba.org>
2016-03-03 05:50:17 +01:00
Stefan Metzmacher
fbcc30931c s3:smbd: remove unused spnego related includes
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Günther Deschner <gd@samba.org>
2015-12-17 14:45:13 +01:00
Richard Sharpe
6abd986704 Convert all uses of uint8/16/32 to _t in source3/smbd.
Signed-off-by: Richard Sharpe <rsharpe@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2015-05-06 04:14:14 +02:00
Stefan Metzmacher
0b99a8ac45 s3:smbd: only pass smbXsrv_connection to fork_echo_handler()
We don't need smbd_server_connection there.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
2014-09-19 09:15:11 +02:00
Stefan Metzmacher
f25331499e s3:smbd: use req->sconn in reply_negprot()
xconn->sconn will go away soon.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
2014-09-19 09:15:11 +02:00
Stefan Metzmacher
05779e318a s3:smbd: pass smbXsrv_connection to get_challenge()
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
2014-08-06 09:51:13 +02:00
Stefan Metzmacher
e9fb54c1ec s3:smbd: pass smbXsrv_connection to negprot_spnego()
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
2014-08-06 09:51:13 +02:00
Stefan Metzmacher
314ef691ba s3:smbd: move sconn->smb1.signing_state to xconn->smb1.signing_state
This prepares the structures for multi-channel support.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
2014-08-06 09:51:11 +02:00
Stefan Metzmacher
cd8105484c s3:smbd: move sconn->smb1.negprot.* to xconn->smb1.negprot.*
This prepares the structures for multi-channel support.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
2014-08-06 09:51:11 +02:00
Shirish Pargaonkar
a0583976da samba: Retain case sensitivity of cifs client
When a client supports extended security but server does not,
and that client, in Flags2 field of smb header indicates that

- it supports extended security negotiation
- it does not support security signatures
- it does not require security signatures

Samba server treats a client as a Vista client.

That turns off case sensitivity and that is a problem for cifs vfs client.

So include remote cifs client along with remote samba client
to not do so otherwise.

Bug: https://bugzilla.samba.org/show_bug.cgi?id=10755

Signed-off-by: Shirish Pargaonkar <spargaonkar@suse.com>
Reviewed-by: Jeremy Allison <jra@samba.org>
Reviewed-by: David Disseldorp <ddiss@samba.org>

Autobuild-User(master): David Disseldorp <ddiss@samba.org>
Autobuild-Date(master): Fri Aug  1 16:11:43 CEST 2014 on sn-devel-104
2014-08-01 16:11:43 +02:00
Stefan Metzmacher
a56c35a4de s3:smbd: always allow SMB1 signing, but only announce it if configured.
Always allow the client to turn on SMB1 signing using
FLAGS2_SMB_SECURITY_SIGNATURES_REQUIRED.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>

Autobuild-User(master): Stefan Metzmacher <metze@samba.org>
Autobuild-Date(master): Wed Apr 16 10:07:56 CEST 2014 on sn-devel-104
2014-04-16 10:07:56 +02:00
Stefan Metzmacher
2103c373b4 auth/gensec: remove tevent_context argument from gensec_update()
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
2014-03-27 00:36:32 +01:00
Andrew Bartlett
86850860f8 lib/param: Normalise "read raw" and "write raw" parameters
They have been changed to function like normal parameters,
removing a special case in the loadparm system.

Andrew Bartlett

Signed-off-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Garming Sam <garming@catalyst.net.nz>
Reviewed-by: Michael Adam <obnox@samba.org>
2014-02-12 13:17:13 +13:00
Garming Sam
63598ff628 param: rename lp function and variable from "encrypted_passwords" to "encrypt_passwords"
Signed-off-by: Garming Sam <garming@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2014-02-07 16:19:15 -08:00
Garming Sam
fc111c7875 param: rename lp function and variable from "srv_minprotocol" to "server_min_protocol"
Signed-off-by: Garming Sam <garming@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2014-02-07 16:19:15 -08:00
Garming Sam
64dc4b59f8 param: rename lp function and variable from "srv_maxprotocol" to "server_max_protocol"
Signed-off-by: Garming Sam <garming@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2014-02-07 16:19:15 -08:00
Garming Sam
57d407430f param: rename lp function and variable from "maxmux" to "max_mux"
Signed-off-by: Garming Sam <garming@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2014-02-07 16:19:15 -08:00
Volker Lendecke
fbee7c1eab smbd: Fix async echo handler forking (Bug 10086)
If SMB3 is chosen via an SMB1 negprot, we forked the echo handler because
set_Protocol is called later, after the full protocol negotiation is done.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org

Autobuild-User(master): Volker Lendecke <vl@samba.org>
Autobuild-Date(master): Wed Aug 14 15:54:43 CEST 2013 on sn-devel-104
2013-08-14 15:54:43 +02:00
Stefan Metzmacher
be98c1c889 s3:smbd: remove silly (SMB_OFF_T_BITS == 64) checks
configure will abort if sizeof(off_t) is not 8.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2013-03-20 09:32:26 -07:00
Jeremy Allison
b70f23c2b5 Correctly check for errors in strlower_m() returns. 2012-08-09 12:08:18 -07:00
Andrew Bartlett
9521cd0409 param: Make the 'unicode' parameter common
This parameter is most useful for interop testing, rather than production use.

Andrew Bartlett
2012-07-24 10:46:12 +10:00
Andrew Bartlett
6aee8021a1 s3-smbd: Remove unused branches in negprot since security=share was removed 2012-06-11 11:44:07 +02:00
Andrew Bartlett
9db04c481d s3-smbd: Remove support for protocols before LANMAN1
This falls out of the removal of security=share, because we now require that
a session setup has been performed before (essentially) all other operations.

Andrew Bartlett
2012-06-05 04:27:36 +02:00
Stefan Metzmacher
b3235d483d s3:smbd: introduce struct smbXsrv_connection
This will represent a transport connection for SMB 1 or 2
in the server. smbd_server_connection will slowly be moved
to the SMB_VFS layer to satisfy the existing modules,
but it will hopefully be protocol independend in future.

metze
2012-05-12 01:01:34 +02:00
Jelmer Vernooij
c0288e0612 lib/util: Remove obsolete sys_getpid() and sys_fork().
The performance of these is minimal (these days) and they can return
invalid results when used as part of applications that do not use
sys_fork().

Autobuild-User: Jelmer Vernooij <jelmer@samba.org>
Autobuild-Date: Sat Mar 24 21:55:41 CET 2012 on sn-devel-104
2012-03-24 21:55:40 +01:00
Andrew Bartlett
50547a9950 s3-auth: Follow auth_ntlmssp and use auth4_context for Session Setup
This patch ensures consistency in behaviour between NTLMSSP and NTLM
session setup handlers.  By calling the same layer that auth_ntlmssp
calls, we can not only allow redirection of all authentication to the
AD DC, we ensure that map to guest and username map handling is
consistent, even in the file server alone.

Andrew Bartlett
2012-03-08 10:14:05 +01:00
Andrew Bartlett
d7bb961859 s3-auth: Remove security=share (depricated since 3.6).
This patch removes security=share, which Samba implemented by matching
the per-share password provided by the client in the Tree Connect with
a selection of usernames supplied by the client, the smb.conf or
guessed from the environment.

The rationale for the removal is that for the bulk of security=share
users, we just we need a very simple way to run a 'trust the network'
Samba server, where users mark shares as guest ok.  This is still
supported, and the smb.conf options are documented at
https://wiki.samba.org/index.php/Public_Samba_Server

At the same time, this closes the door on one of the most arcane areas
of Samba authentication.

Naturally, full user-name/password authentication remain available in
security=user and above.

This includes documentation updates for username and only user, which
now only do a small amount of what they used to do.

Andrew Bartlett

                       --------------
                      /              \
                     /      REST      \
                    /        IN        \
                   /       PEACE        \
                  /                      \
                  |      SEC_SHARE       |
                  |    security=share    |
                  |                      |
                  |                      |
                  |       5 March        |
                  |                      |
                  |        2012          |
                 *|     *  *  *          | *
        _________)/\\_//(\/(/\)/\//\/\///|_)_______
2012-03-04 23:33:05 +01:00
Andrew Bartlett
c318c94170 s3-param: Align lp_{max,min}protocol with lib/param names
This adds an alisas to ensure that both our loadparm systems know all
the names.

I would like to move to the 'server ..' name as canonical, and this
will be raised on the list.

Andrew Bartlett
2012-02-27 07:36:05 +01:00
Andrew Bartlett
eb3e34e965 s3-smbd Remove unused code now we always have SPNEGO via gensec
This was previously needed because SPNEGO was only available in the AD DC.

Andrew Bartlett

Signed-off-by: Stefan Metzmacher <metze@samba.org>
2012-02-16 15:18:43 +01:00
Andrew Bartlett
16e463e169 s3-auth Remove ntlmssp_wrap.h which is no longer required
Signed-off-by: Stefan Metzmacher <metze@samba.org>
2012-01-05 17:17:28 +01:00
Andrew Bartlett
3042e38d51 s3-auth use gensec directly rather than via auth_generic_state
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>
2012-01-05 17:17:28 +01:00
Andrew Bartlett
1075efabc7 s3-auth Add TALLOC_CTX * to auth_generic_prepare()
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>
2012-01-05 17:17:28 +01:00
Andrew Bartlett
1100f6eca5 s3-auth rename auth_ntlmssp_prepare() -> auth_generic_prepare()
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>
2011-12-22 19:25:10 +01:00
Andrew Bartlett
6391fff9da s3-auth rename auth_ntlmssp_state -> auth_generic_state
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>
2011-12-22 19:25:10 +01:00
Stefan Metzmacher
704cf10645 s3:smbd: avoid using sconn_server_id()
metze
2011-12-16 13:19:32 +01:00
Stefan Metzmacher
03455519e7 s3:smbd: pass smbd_server_connection and a snumused function pointer to reload_services()
metze
2011-12-15 11:11:24 +01:00
Stefan Metzmacher
af1a2eecce s3:smbd: calculate the negprot signing flags from the signing_state
We should map from lp_server_signing() just once in srv_init_signing().

metze

Signed-off-by: Günther Deschner <gd@samba.org>

Autobuild-User: Günther Deschner <gd@samba.org>
Autobuild-Date: Wed Nov 16 18:59:49 CET 2011 on sn-devel-104
2011-11-16 18:59:49 +01:00
Stefan Metzmacher
9b4c300922 s3:smbd: also send the server name in the negprot response
This matches W2K (at least sp4) and higher.

metze

Autobuild-User: Stefan Metzmacher <metze@samba.org>
Autobuild-Date: Fri Nov  4 15:50:06 CET 2011 on sn-devel-104
2011-11-04 15:50:06 +01:00
Stefan Metzmacher
caa134672c s3:smbd: make use of SMB_SIGNING_* constants
metze
2011-11-03 16:55:13 +01:00