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preparation for the full share modes and ntcreatex code that I am
working on.
highlights include:
- changed the way a backend determines if it is allowed to process a
request asynchronously. The previous method of looking at the
send_fn caused problems when an intermediate ntvfs module disabled
it, and the caller then wanted to finished processing using this
function. The new method is a REQ_CONTROL_MAY_ASYNC flag in
req->control_flags, which is also a bit easier to read
- fixed 2 bugs in the readbraw server code. One related to trying to
answer a readbraw with smb signing (which can't work, and crashed
our signing code), the second related to error handling, which
attempted to send a normal SMB error packet, when readbraw must
send a 0 read reply (as it has no header)
- added several more ntvfs_generic.c generic mapping functions. This
means that backends no longer need to implement such esoteric
functions as SMBwriteunlock() if they don't want to. The backend
can just request the mapping layer turn it into a write followed by
an unlock. This makes the backends considerably simpler as they
only need to implement one style of each function for lock, read,
write, open etc, rather than the full host of functions that SMB
provides. A backend can still choose to implement them
individually, of course, and the CIFS backend does that.
- simplified the generic structures to make them identical to the
principal call for several common SMB calls (such as
RAW_WRITE_GENERIC now being an alias for RAW_WRITE_WRITEX).
- started rewriting the pvfs_open() code in preparation for the full
ntcreatex semantics.
- in pvfs_open and ipc_open, initially allocate the open file
structure as a child of the request, so on error we don't need to
clean up. Then when we are going to succeed the open steal the
pointer into the long term backend context. This makes for much
simpler error handling (and fixes some bugs)
- use a destructor in the ipc backend to make sure that everthing is
cleaned up on receive error conditions.
- switched the ipc backend to using idtree for fnum allocation
- in the ntvfs_generic mapping routines, use a allocated secondary
structure not a stack structure to ensure the request pointer
remains valid even if the backend replies async.
specifying a endpoint is now also 'endpoint' instead of 'endpoints'. The
default endpoint (if none is specified) is still "ncacn_np:[\\pipe\\ifacename]",
where ifacename is the name of the interface.
Examples:
[
uuid(60a15ec5-4de8-11d7-a637-005056a20182),
endpoint("ncacn_np:[\\pipe\\rpcecho]", "ncacn_ip_tcp:")
]
interface rpcecho
{
void dummy();
}
dcerpc_binding is now converted to ep_description in the server, but I hope to
completely eliminate ep_description later on.
The eventual goal of all these changes is to make it easier to add
transports as I'm going to add support for
ncalrpc (local RPC over named pipes) and ncacn_unix_stream (Unix sockets).
in the right state when called. For example, when we use the unixuid
handler in the chain of handlers, and a backend decides to continue a
call asynchronously then we need to ensure that the continuation
happens with the right security context.
The solution is to add a new ntvfs operation ntvfs_async_setup(),
which calls all the way down through the layers, setting up anything
that is required, and takes a private pointer. The backend wanting to
make a async calls can use ntvfs_async_setup() to ensure that the
modules above it are called when doing async processing.
- the stacking of modules
- finding the modules private data
- hide the ntvfs details from the calling layer
- I set NTVFS_INTERFACE_VERSION 0 till we are closer to release
(because we need to solve some async problems with the module stacking)
metze
rather than manual reference counts
- properly support SMBexit in the cifs and posix backends
- added a logoff method to all backends
With these changes the RAW-CONTEXT test now passes against the posix backend
server code. This fixes a number of memory leaks I found when testing
with valgrind and smbtorture, as the cascading effect of a
talloc_free() ensures that anything derived from the top level object
is destroyed on disconnect.
ntvfs handler = nbench posix
and the nbench pass-thru module will be called before the posix
module. The chaining logic is now much saner, and less racy, with each
level in the chain getting its own private pointer rather than relying
on save/restore logic in the pass-thru module.
The only pass-thru module we have at the moment is the nbench one
(which records all traffic in a nbench compatibe format), but I plan
on soon writing a "unixuid" pass-thru module that will implement the
setegid()/setgroups()/seteuid() logic for standard posix uid
handling. This separation of the posix backend from the uid handling
should simplify the code, and make development easier.
I also modified the nbench module so it can do multiple chaining, so
if you want to you can do:
ntvfs module = nbench nbench posix
and it will save 2 copies of the log file in /tmp. This is really only
useful for testing at the moment until we have more than one pass-thru
module.
to a struct smbsrv_session that the same as cli_session for the client
we need a gensec_security pointer there
(spnego support will follow)
prefix some related functions with smbsrv_
metze
Initial attempt at RAP server infrastructure. Look at rap_server.c for the
dummy functions that are supposed to implement the core functionality.
ipc_rap.c contains all the data shuffling. _rap_shareenum and _rap_serverenum2
in ipc_rap.c are (I think) regular enough to be auto-generated.
I did not test all the corner cases yet, but nevertheless I would like some
comments on the general style.
Volker
P.S: samba-3 smbclient now doesn't freak out anymore, although the results are
not entirely correct :-)
This implements gensec for Samba's server side, and brings gensec up
to the standards of a full subsystem.
This means that use of the subsystem is by gensec_* functions, not
function pointers in structures (this is internal). This causes
changes in all the existing gensec users.
Our RPC server no longer contains it's own generalised security
scheme, and now calls gensec directly.
Gensec has also taken over the role of auth/auth_ntlmssp.c
An important part of gensec, is the output of the 'session_info'
struct. This is now reference counted, so that we can correctly free
it when a pipe is closed, no matter if it was inherited, or created by
per-pipe authentication.
The schannel code is reworked, to be in the same file for client and
server.
ntlm_auth is reworked to use gensec.
The major problem with this code is the way it relies on subsystem
auto-initialisation. The primary reason for this commit now.is to
allow these problems to be looked at, and fixed.
There are problems with the new code:
- I've tested it with smbtorture, but currently don't have VMware and
valgrind working (this I'll fix soon).
- The SPNEGO code is client-only at this point.
- We still do not do kerberos.
Andrew Bartlett
because this is the connection state per transport layer (tcp)
connection
I also moved the substructs directly into smbsrv_connection,
because they don't need a struct name and we should allway pass the complete
smbsrv_connection struct into functions
metze
the dce_conn->auth_state.session_info
( the ntlmssp one works fine, but the schannel one isn't implemented yet)
this is also set by the ntvfs_ipc backend on the endpoint connect.
metze
goodness and light' struct ;-)
Break apart the auth subsystem's return strucutres, into the parts
that a netlogon call cares about, and the parts that are for a local
session. This is the 'struct session_info' and it will almost
completly replace the current information stored on a vuid, but be
generic to all login methods (RPC over TCP, for example).
Andrew Bartlett
1.) We now register endpoint servers add startup via register_backend()
and later use the smb.conf 'dcerpc endpoint servers' parameter to setup the dcesrv_context
2.) each endpoint server can register at context creation time as much interfaces as it wants
(multiple interfaces on one endpoint are supported!)
(NOTE: there's a difference between 'endpoint server' and 'endpoint'!
for details look at rpc_server/dcesrv_server.h)
3.) one endpoint can have a security descriptor registered to it self
this will be checked in the future when a client wants to connect
to an smb pipe endpoint.
4.) we now have a 'remote' endpoint server, which works like the ntvfs_cifs module
it takes this options in the [globals] section:
dcerpc remote:interfaces = srvsvc, winreg, w32time, epmapper
dcerpc remote:binding = ...
dcerpc remote:user = ...
dcerpc remote:password = ...
5.) we currently have tree endpoint servers: epmapper, rpcecho and remote
the default for the 'dcerpc endpiont servers = epmapper, rpcecho'
for testing you can also do
dcerpc endpoint servers = rpcecho, remote, epmapper
dcerpc remote:interfaces = srvsvc, samr, netlogon
6,) please notice the the epmapper now only returns NO_ENTRIES
(but I think we'll find a solution for this too:-)
7.) also there're some other stuff left, but step by step :-)
This patch also includes updates for the
register_subsystem() , ntvfs_init(), and some other funtions
to check for duplicate subsystem registration
metze
(hmmm, my first large commit...I hope it works as supposed :-)
This adds support for bigendian rpc in the client. I have installed
SUN pcnetlink locally and am using it to test the samba4 rpc
code. This allows us to easily find places where we have stuffed up
the types (such as 2 uint16 versus a uint32), as testing both
big-endian and little-endian easily shows which is correct. I have now
used this to fix several bugs like that in the samba4 IDL.
In order to make this work I also had to redefine a GUID as a true
structure, not a blob. From the pcnetlink wire it is clear that it is
indeed defined as a structure (the byte order changes). This required
changing lots of Samba code to use a GUID as a structure.
I also had to fix the if_version code in dcerpc syntax IDs, as it
turns out they are a single uint32 not two uint16s.
The big-endian support is a bit ugly at the moment, and breaks the
layering in some places. More work is needed, especially on the server
side.
don't cause fragmented pdus (I'll add fragments shortly)
* change data_blob_talloc() to not zero memory when the 2nd argument
is NULL. The zeroing just masks bugs, and can't even allow a DOS
attack
* modified pidl to ensure that [ref] arguments to the out side of
functions are allocated when parsing the in side. This allows rpc
backends to assume that [ref] variables are all setup. Doesn't work
correctly for [ref] arrays yet
* changed DLIST_ADD_END() to take the type instead of a tmp
variable. This means you don't need to declare a silly tmp variable in
the caller
CVS: Enter Log. Lines beginning with `CVS:' are removed automatically
CVS:
CVS: Committing in .
CVS:
CVS: Modified Files:
CVS: Makefile.in configure.in include/includes.h include/ntvfs.h
CVS: include/smb.h lib/iconv.c lib/module.c ntvfs/ntvfs_base.c
CVS: ntvfs/cifs/vfs_cifs.c ntvfs/ipc/vfs_ipc.c
CVS: ntvfs/posix/vfs_posix.c ntvfs/print/vfs_print.c
CVS: ntvfs/reference/vfs_ref.c ntvfs/simple/vfs_simple.c
CVS: passdb/pdb_interface.c
CVS: Added Files:
CVS: include/module.h
CVS: ----------------------------------------------------------------------
Update to the modules system. Fixed:
- get rid of smb_probe_module
- merge older updates from 3.0
- introduced register_subsystem() and register_backend() functions
- adapt ntvfs and charset to use new register functions
- made smb_load_modules() work recursively (e.g. 'preload modules = /usr/lib/samba')
- got rid of some old remains
Things that still need work:
- Did I break tankFS? I don't think so, but I can't test it here :-(
- Add 'postload modules = ' (for modules that need to be loaded after fork() in smbd, if applicable)
- Convert RPC, auth, passdb, etc to use new register_{subsystem,backend}() functions
- Accept wildcards in 'preload modules' option, instead of loading recursively
