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Commit Graph

28 Commits

Author SHA1 Message Date
Jeremy Allison
7bd7fa0a0b s3: smbd: Add helper function check_path_syntax_smb2().
Not yet used, but uses check_path_syntax_smb2_msdfs()
so remove the #ifdef's around that.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15144

Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
2022-08-12 18:19:30 +00:00
Jeremy Allison
bcba550228 s3: smbd: Add new function check_path_syntax_smb2_msdfs() for SMB2 MSDFS paths.
#ifdef'ed out as static and not yet used.

We can't just call check_path_syntax() on these as
they are of the form hostname\share[\extrapath]
(where [\extrapath] is optional).

hostname here can be an IPv6 ':' separated address,
which check_path_syntax() fails on due to the streamname
processing.

NB. This also has to cope with out existing (broken)
libsmbclient libraries that sometimes set the DFS
flag and then send a local pathname. Cope by just
calling the normal check_path_syntax() on the
whole pathname in that case.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15144

Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
2022-08-12 18:19:30 +00:00
Jeremy Allison
2818fd6910 s3: smbd: Fix cosmetic bug logging pathnames from Linux kernel clients using SMB1 DFS calls.
The Linux kernel SMB1 client has a bug - it sends
DFS pathnames as:

\\server\share\path

instead of:

\server\share\path

Causing us to mis-parse server,share,remaining_path here
and jump into 'goto local_path' at 'share\path' instead
of 'path'.

This doesn't cause an error as the limits on share names
are similar to those on pathnames.

parse_dfs_path() which we call before filename parsing
copes with this by calling trim_char on the leading '\'
characters before processing.

Do the same here so logging of pathnames looks better.

How did I find this ? Lots and lots of manual
testing with the Linux kernel client to make
sure all the recent changes haven't broken Linux
SMB1/2/3 DFS :-).

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15144

Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
2022-08-12 18:19:30 +00:00
Jeremy Allison
f24ef117cf s3: smbd: Change srvstr_get_path_internal() to always call check_path_syntaxXXX(), even on DFS pathnames.
The original design decision to just copy a DFS path and let
parse_dfs_path() take care of it was a horrible mistake.

Fix srvstr_get_path_internal() to always return a
/server/share/path (i.e. a path separated with '/', not '\').

This is a more complex change than I like to allow
DFS path procesing in srvstr_get_path_internal() but
needed as clients (including Samba smbclient) have a
rather "fuzzy" idea of what constitutes a valid DFS path.
If we detect the DFS path isn't valid here we have to
fall back to treating it as a local path.

I also need to modify the DFS parsing in
filename_convert_smb1_search_path() to cope with only '/'
separators.

This also means parse_dfs_path() needs changing to
cope.

The changes here are best reviewed by just applying
the fix and looking at the modified functions:

srvstr_get_path_internal()
parse_dfs_path()

For parse_dfs_path() it's mostly removing bad code
and makes parse_dfs_path() much easier to read.

These changes will enable me to remove some ugly mistakes made
adding ucf_flags to extract_snapshot_token(), as
we can now always assume canonicalized paths.

This is a little messy, but has to be done in
one chunk as the change to srvstr_get_path_internal()
depends on the change to parse_dfs_path().

Thanks to Volker for the insight that made this
cleanup possible.

Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
2022-08-05 09:24:30 +00:00
Jeremy Allison
1d658bbe65 s3: smbd: Add dst_dirfsp parameter to rename_internals_fsp().
Not yet used, but when this is fully plumbed though we can
look at optimizing and removing the code inside rename_internals_fsp()
that currently gets it's own dst_dirfsp.

Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
2022-08-02 19:49:32 +00:00
Jeremy Allison
0b33ec49e3 s3: smbd: Add dirfsp parameter to unlink_internals().
Not yet used but passed to SMB_VFS_CREATE().

Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
2022-08-02 19:49:32 +00:00
Jeremy Allison
d9f144acb6 s3: smbd: Add src_dirfsp and dst_dirfsp parameters to rename_internals().
Not yet used (but passed to SMB_VFS_CREATE_FILE()).

Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Volker Lendecke <vl@samba.org>
2022-08-02 19:49:32 +00:00
Jeremy Allison
3ddc9344c2 CVE-2022-32742: s3: smbd: Harden the smbreq_bufrem() macro.
Fixes the raw.write.bad-write test.

NB. We need the two (==0) changes in source3/smbd/smb2_reply.c
as the gcc optimizer now knows that the return from
smbreq_bufrem() can never be less than zero.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15085

Remove knownfail.

Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: David Disseldorp <ddiss@samba.org>

Autobuild-User(master): Jule Anger <janger@samba.org>
Autobuild-Date(master): Wed Jul 27 11:46:46 UTC 2022 on sn-devel-184
2022-07-27 11:46:46 +00:00
Volker Lendecke
a771f1d314 smbd: Simplify copy_file()
Pass in new_create_disposition directly. We can also remove the
if-case (ofun & OPENX_FILE_EXISTS_OPEN) in copy_file, the two callers
don't use it.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2022-05-20 19:02:37 +00:00
Volker Lendecke
e7a60eb7c9 smbd: Simplify copy_file()
The only two callers did not use "count" and "target_is_directory".

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
2022-05-20 19:02:37 +00:00
Volker Lendecke
6086a73f4e Revert "vfs: remove dirfsp arg from SMB_VFS_CREATE_FILE()"
This reverts commit 322574834f.

Not strictly a revert anymore, but for future work we do need "dirfsp"
in create_file_default() passed through the VFS.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>
2022-04-28 13:12:33 +00:00
David Mulder
a48bf2431e smbd: Remove uses of srv_send_smb
Replace them with direct calls to smb1_srv_send
and smb2_srv_send.

Signed-off-by: David Mulder <dmulder@suse.com>
Signed-off-by: Jeremy Allison <jra@samba.org>
2022-04-07 17:37:30 +00:00
David Mulder
34feb41881 smbd: Move smb1_utils.h include to smbd.h
Signed-off-by: David Mulder <dmulder@suse.com>
Reviewed-by: Jeremy Allison <jra@samba.org>
2022-04-07 17:37:30 +00:00
David Mulder
0be7643b06 smbd: Move smbd_do_unlocking to smb2_reply.c
Signed-off-by: David Mulder <dmulder@suse.com>
Reviewed-by: Jeremy Allison <jra@samba.org>
2022-04-07 17:37:29 +00:00
David Mulder
a85436ac48 smbd: Move get_lock_offset to smb2_reply.c
Signed-off-by: David Mulder <dmulder@suse.com>
Reviewed-by: Jeremy Allison <jra@samba.org>
2022-04-07 17:37:29 +00:00
David Mulder
fdf5727c1e smbd: Move copy_file to smb2_reply.c
Signed-off-by: David Mulder <dmulder@suse.com>
Reviewed-by: Jeremy Allison <jra@samba.org>
2022-04-07 17:37:29 +00:00
David Mulder
160849a822 smbd: Move rename_internals to smb2_reply.c
Signed-off-by: David Mulder <dmulder@suse.com>
Reviewed-by: Jeremy Allison <jra@samba.org>
2022-04-07 17:37:29 +00:00
David Mulder
4140d1790a smbd: Move rename_internals_fsp to smb2_reply.c
Signed-off-by: David Mulder <dmulder@suse.com>
Reviewed-by: Jeremy Allison <jra@samba.org>
2022-04-07 17:37:29 +00:00
David Mulder
a8985a8ad8 smbd: Move sendfile_short_send to smb2_reply.c
Signed-off-by: David Mulder <dmulder@suse.com>
Reviewed-by: Jeremy Allison <jra@samba.org>
2022-04-07 17:37:29 +00:00
David Mulder
01ee69a958 smbd: Move fake_sendfile to smb2_reply.c
Signed-off-by: David Mulder <dmulder@suse.com>
Reviewed-by: Jeremy Allison <jra@samba.org>
2022-04-07 17:37:29 +00:00
David Mulder
56ac1efc70 smbd: Move unlink_internals to smb2_reply.c
Signed-off-by: David Mulder <dmulder@suse.com>
Reviewed-by: Jeremy Allison <jra@samba.org>
2022-04-07 17:37:29 +00:00
David Mulder
95d9606827 smbd: Move reply_special to smb2_reply.c
Signed-off-by: David Mulder <dmulder@suse.com>
Reviewed-by: Jeremy Allison <jra@samba.org>
2022-04-07 17:37:29 +00:00
David Mulder
f0396b9af9 smbd: Move check_fsp_ntquota_handle to smb2_reply.c
Signed-off-by: David Mulder <dmulder@suse.com>
Reviewed-by: Jeremy Allison <jra@samba.org>
2022-04-07 17:37:29 +00:00
David Mulder
347c7af9e9 smbd: move check_fsp to smb2_reply.c
Signed-off-by: David Mulder <dmulder@suse.com>
Reviewed-by: Jeremy Allison <jra@samba.org>
2022-04-07 17:37:29 +00:00
David Mulder
0d21c676ae smbd: Move check_fsp_open to smb2_reply.c
Signed-off-by: David Mulder <dmulder@suse.com>
Reviewed-by: Jeremy Allison <jra@samba.org>
2022-04-07 17:37:29 +00:00
David Mulder
a8e1f65cba smbd: Move srvstr_pull_req_talloc to smb2_reply.c
Signed-off-by: David Mulder <dmulder@suse.com>
Reviewed-by: Jeremy Allison <jra@samba.org>
2022-04-07 17:37:29 +00:00
David Mulder
0e3a46fc0b smbd: Move srvstr_get_path* to smb2_reply.c
Signed-off-by: David Mulder <dmulder@suse.com>
Reviewed-by: Jeremy Allison <jra@samba.org>
2022-04-07 17:37:29 +00:00
David Mulder
08fa5527cd smbd: Move check_path_syntax* to smb2_reply.c
Signed-off-by: David Mulder <dmulder@suse.com>
Reviewed-by: Jeremy Allison <jra@samba.org>
2022-04-07 17:37:29 +00:00