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This reverts commit c53646bccd.
As mentioned by Andrew, we shouldn't break environments where
"force group" has been configured to use substituted variables.
Signed-off-by: David Disseldorp <ddiss@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Tue Jul 10 00:12:19 CEST 2018 on sn-devel-144
set_conn_force_user_group() and change_to_user_internal() leak onto
the callers' talloc stackframe. Drop the unnecessary heap allocations.
Signed-off-by: David Disseldorp <ddiss@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
The majority of these lp_servicename(talloc_tos(), ...) callers leak
onto the talloc stackframe. Drop the unnecessary heap allocations.
Signed-off-by: David Disseldorp <ddiss@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
This will be filled with an impersonation wrapper in the next commits.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
This can be used if a request operates on two fsp's,
e.g. the offload_write_send/recv code.
This is important if (at least) one of
the shares uses "force user".
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
change_to_user() should be the one and only function for the whole
impersonation processing. So we also need to stack the
chdir_current_service() behaviour for become_user/unbecome_user,
so we may need to call vfs_ChDir(ctx_p->conn, ctx_p->conn->cwd_fname);
in pop_conn_ctx().
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
change_to_user() should be the one and only function for the whole
impersonation processing. So we also need to stack the
set_current_user_info() information for become_user/unbecome_user.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
Note that (current_user.vuid == vuid) also works with
UID_FIELD_INVALID.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
We should finish manipulating ent->session_info before filling
conn->session_info. And conn->session_info should be not be changed.
Use git show -U15.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
A SMB session reauth will have invalidated conn->vuid via
conn_clear_vuid_caches().
Ensure conn->vuid always has the vuid of the current user in
check_user_ok().
Bug: https://bugzilla.samba.org/show_bug.cgi?id=13351
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Autobuild-User(master): Ralph Böhme <slow@samba.org>
Autobuild-Date(master): Thu Mar 22 18:26:04 CET 2018 on sn-devel-144
A user without access in the share acl can easily trigger those
warnings. Change the logging level, so that they do not appear with the
default logging level.
Signed-off-by: Christof Schmitt <cs@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Thu Jul 31 01:17:30 CEST 2014 on sn-devel-104
Use inside source3/printing/nt_printing.c:get_correct_cversion().
Allow check_user_ok() to be called with vuid==UID_FIELD_INVALID.
All this should do is throw away one entry in the vuid cache.
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Make it static. Only called from uid.c now.
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Allows this to be called from both make_connection_snum() as well as check_user_ok().
Gives a consistent share security check function.
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Also use this to set conn->read_only. Cache the share_access in the
struct vuid_cache_entry struct so we only evaluate this once per new
user access on this share.
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Change VFS ABI to 31 for 4.1.0.
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
Now we have removed "security=share" we cannot be
called with vuid == UID_FIELD_INVALID.
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>
When we do a become_root()/unbecome_root() pair to temporarily
raise privilege, this NULLs out the NT token. If we're within
a become_root()/unbecome_root() pair then return the previous
token on the stack as our NT token. This is what we should be
using to check against NT ACLs in the file server. This copes
with security context changing when removing a file on close
under the context of another user (when 2 users have a file
open, one sets delete on close and then the other user has
to actually do the delete).
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Michael Adam <obnox@samba.org>
Autobuild-User(master): Michael Adam <obnox@samba.org>
Autobuild-Date(master): Mon Oct 29 16:26:20 CET 2012 on sn-devel-104
They use talloc_tos() internally: hoist that up to the callers, some
of whom don't want to us talloc_tos().
A simple patch, but hits a lot of files.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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 |
*| * * * | *
_________)/\\_//(\/(/\)/\//\/\///|_)_______
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 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>
The become_root() and similar 'smbd' functions that are used widely in
Samba libraries had 'dummy' copies in dummysmbd.c and dummyroot.c.
These have been replaced by a runtime plugin mechanim, which ensures
that standlone binaries still do nothing, while in smbd the correct
function is used.
This avoids having these as duplicate symbols in the smbd binary,
which can cause unpredictable behaviour.
Andrew Bartlett
Signed-off-by: Andrew Tridgell <tridge@samba.org>
The idea with this split is to make it easier to handle dependencies,
avoiding having the loadparm code depend on the global server
variables, without resorting to dummy functions and linker tricks.
conn_clear_vuid_cache() is brought in from uid.c to make it static
Andrew Bartlett
This uses the provided session_info instead of searching the user via
the vuid. This is useful to work with fake connnection you need to
create if someone connects directly to a rpc service.
Signed-off-by: Jeremy Allison <jra@samba.org>
