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The current_user_info is updated at the SMB level, but currently not at the RPC
level in the RPC impersonation function smbd_become_authenticated_pipe_user().
For RPC services running embedded this is not an issue as the SMB level
impersonation has already taken care of current_user_info, but for RPC services
running as external daemons, eg spoolssd, the omission of updating
current_user_info results in variable expansion of eg %U (username) to be
broken.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14668
MR: https://gitlab.com/samba-team/samba/-/merge_requests/1834
RN: %U variable expansion not working in spoolsd
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Björn Baumbach <bb@sernet.de>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Fri Mar 12 00:54:01 UTC 2021 on sn-devel-184
The last user was removed by 3d09993725.
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): Wed Jul 29 13:44:47 UTC 2020 on sn-devel-184
This is already handled by set_sec_ctx() below, we just have to pass in the
values instead of setting it here in this function before calling set_sec_ctx().
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Andreas Schneider <asn@samba.org>
All become_*()/unbecome_*() functions don't alter the working
directory. Only change_to_user_and_service*() does.
Pair-Programmed-With: Ralph Boehme <slow@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Wed Sep 11 21:16:57 UTC 2019 on sn-devel-184
There was only one caller left.
Pair-Programmed-With: Ralph Boehme <slow@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
We should make the behavior change (that gives up some protection)
more obvious, by changing the function names.
At least some OEMs have patches relying on the 4.9/4.10 behaviour
and we want them to detect that they have to do more work when they
need to change directories.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
This was the behavior in versions before 4.9 and
it is hopefully not required by current callers of
become_user*().
Pair-Programmed-With: Ralph Boehme <slow@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
In the next commit we'll drop the _and_service() part.
Pair-Programmed-With: Ralph Boehme <slow@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Prepares for removing changing cwd from become_user*() in a subsequent commit.
Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Ralph Boehme <slow@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Ralph Boehme <slow@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
This helps admins to figure out which user has a problem
Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Volker Lendecke <vl@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
This makes sure we always call chdir_current_service() even
when we still impersonated the user. Which is important
in order to run the SMB* request within the correct working directory
and only if the user has permissions to enter that directory.
It makes sure we always update conn->lastused_count
in chdir_current_service() for each request.
Note that vfs_ChDir() (called from chdir_current_service())
maintains its own cache and avoids calling SMB_VFS_CHDIR()
if possible.
It means we still avoid syscalls if we get a multiple requests
for the same session/tcon tuple.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14035
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
Autobuild-User(master): Karolin Seeger <kseeger@samba.org>
Autobuild-Date(master): Tue Sep 3 09:27:22 UTC 2019 on sn-devel-184
We should not leave current_user.done_chdir as true if we didn't call
chdir_current_service() with success.
This caused problems in when calling vfs_ChDir() in pop_conn_ctx() when
chdir_current_service() worked once on one share but later failed on another
share.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14035
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
Will be called on elsewhere on successful impersonation.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=14035
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
smbd could crash if "force group" is added to a
share definition whilst an existing connection
to that share exists. In that case, don't change
the existing credentials for force group, only
do so for new connections.
Remove knownfail from regression test.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=13690
Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
Autobuild-User(master): Ralph Böhme <slow@samba.org>
Autobuild-Date(master): Fri Jan 25 16:31:27 CET 2019 on sn-devel-144
This will be used to in order to pass down the
impersonation magic from the SMB layer through
the SMB_VFS layer.
This includes the following options:
smbd:force sync user path safe threadpool
smbd:force sync user chdir safe threadpool
smbd:force sync root path safe threadpool
smbd:force sync root chdir safe threadpool
They can be used in order to test the non linux code
path on linux, once we get code that makes full use
of the new infrastructure.
Pair-Programmed-With: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Ralph Boehme <slow@samba.org>
This makes sure we're doing the correct impersonation for async
requests, which is a requirement to start adding path based
async SMB_VFS calls.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
For now they just add debugging, but that will change shortly.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
As a start these are just wrappers arround
smbd_impersonate_debug_create(), without any real impersonation.
But this will change shortly.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
This will be used to implement no-op impersonation
for the create_conn_struct_as_root() case were we
don't really have other unrelated events in the loop
and only need a valid tevent wrapper context to avoid
double free on the raw event context on teardown.
This also adds useful debugging instead of being
a full no-op wrapper.
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
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
