IF YOU WOULD LIKE TO GET AN ACCOUNT, please write an
email to Administrator. User accounts are meant only to access repo
and report issues and/or generate pull requests.
This is a purpose-specific Git hosting for
BaseALT
projects. Thank you for your understanding!
Только зарегистрированные пользователи имеют доступ к сервису!
Для получения аккаунта, обратитесь к администратору.
handle the inverted memory hierarchy that a normal session
establishment gave. The inverted hierarchy came from that fact that
you first establish a socket, then a transport, then a session and
finally a tree. That leads to the socket being at the top of the
memory hierarchy and the tree at the bottom, which makes no sense from
the users point of view, as they want to be able to free the tree and
have everything disappear.
The core problem was that the libcli interface didn't distinguish
between establishing a primary context and a secondary context. If you
establish a 2nd session on a transport then you want the transport to
be referenced by the session, whereas if you establish a primary
session then you want the transport to be a child of the session.
To fix this I have added "parent_ctx" and "primary" arguments to the
libcli intialisation functions. This makes using the library much
easier, and gives us a memory hierarchy that makes much more sense.
I was prompted to do this by a bug in the cifs backend, which was
caused by the socket not being properly torn down on a disconnect due
to the inverted memory hierarchy.
complexity was that events didn't automatically cleanup
themselves. This was because the events code was written before we had
talloc destructors, so you needed to call event_remove_XX() to clean
the event out of the event lists from every piece of code that used
events. I have now added automatic event destructors, which in turn
allowed me to simplify a lot of the calling code.
The 2nd source of complexity was caused by the ref_count, which was
needed to cope with event handlers destroying events while handling
them, which meant the linked lists became invalid, so the ref_count ws
used to mark events for later destruction.
The new system is much simpler. I now have a ev->destruction_count,
which is incremented in all event destructors. The event dispatch code
checks for changes to this and handles it.
it is freed. The problem is that the handler might complete the
request, and called the c->async.fn() async handler. That handler
might free the request handle.
- expanded the generic async name resolver to try multiple methods
- added wins resolutions to the list of methods tried
- fixed up the random trn id generation to use the good random generator
which will eventually try all resolution methods setup in smb.conf
- only resolution backend at the moment is bcast, which does a
parallel broadcast to all configured network interfaces, and takes
the first reply that comes in (this nicely demonstrates how to do
parallel requests using the async APIs)
- converted all the existing code to use the new resolve_name() api
- removed all the old nmb code (yay!)
- structures defined using IDL in nbt.idl
- build around our events structure, and talloc
- fully async
- supports all NBT packet fields as per rfc1002
- easy interfaces for name query and status
For the moment there are just a couple of test functions in
namequery.c, test_name_query() and test_name_status(). These will be
removed when we hook the new library into libcli/ fully
The new library will also be a fairly good basis for a nbt
server. Although it can't be a server as-is, I wrote it with the needs
of a server in mind (for example, extremely scalable idtree based
packet handling)
encapsulates all the different session setup methods, including the
multi-pass spnego code.
I have hooked this into all the places that previously used the
RAW_SESSSETUP_GENERIC method, and have removed the old
RAW_SESSSETUP_GENERIC code from clisession.c and clitree.c. A nice
side effect is that these two modules are now very simple again, back
to being "raw" session setup handling, which was what was originally
intended.
I have also used this to replace the session setup code in the
smb_composite_connect() code, and used that to build a very simple
replacement for smbcli_tree_full_connection().
As a result, smbclient, smbtorture and all our other SMB connection
code now goes via these composite async functions. That should give
them a good workout!
interface to a complete SMB connection setup. Internally it does:
- socket connection
- session request (if needed)
- negprot
- session setup
- tcon
This is the first example of a composite function that builds on other
composite components (the socket connection is a composite function,
which is used as a building block for this function). I think this
will be quite common in composite functions in the future, building up
ever more complex composite functions from smaller building blocks,
while hiding the details from the caller.
There are two things missing from this now. The first is async name
resolution routines (wins, bcast, DNS etc), and the second is that
this code currently only does a NT1 style session setup. I'll work on
adding spnego and old style session setup support next.
- added async support to the negprot client code
- removed two unused parameters from smbcli_full_connection() code
- converted smbclient to use smbcli_full_connection() rather than
reinventing everything itself
socket connections. This was complicated by a few factors:
- it meant moving the event context from clitransport to clisocket,
so lots of structures changed
- we need to asynchronously handle connection to lists of port
numbers, not just one port number. The code internally tries each
port in the list in turn, without ever blocking
- the man page on how connect() is supposed to work asynchronously
doesn't work in practice (now why doesn't this surprise me?). The
getsockopt() for SOL_ERROR is supposed to retrieve the error, but
in fact the next (unrelated) connect() call on the same socket also
gets an error, though not the right error. To work around this I
need to tear down the whole socket between each attempted port. I
hate posix.
Note that clisocket.c still does a blocking name resolution call in
smbcli_sock_connect_byname(). That will be fixed when we add the async
NBT resolution code.
Also note that I arranged things so that every SMB connection is now
async internally, so using plain smbclient or smbtorture tests all the
async features of this new code.
This uses LDB (a local secrets.ldb and the global samdb) to fill out
the secrets from an LSA perspective.
Some small changes to come, but the bulk of the work is now done.
A re-provision is required after this change.
Andrew Bartlett
credentials struct it maintains.
Clearly much of this will be replaced with some system to pass and
store the session_info, as that is the 'right way' to handle this.
Andrew Bartlett
