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This is a central piece of the "merged build" thing: Forward named pipes from
samba3 to samba4. This patch is not finished yet, as we will have to forward
the smb-level authentication information to samba4, but I'm pushing this patch
already to demonstrate the implementation without clutter.
It adds an intermediate parameter
np:proxy = srvsvc samr winreg wkssvc ... and so on
that states which of the pipes should be forwarded to the s4 unix domain socket
DEFAULT. The parameter is intermediate because once we have a proper endpoint
mapper implementation, this information will be retrieved out of a database.
If anybody wants to try this, do the merged build and configure s4 with
server services = samba3_smb, rpc, nbt, wrepl, ldap, cldap, kdc, drepl
samba3:smbd = /data/inst/sbin/smbd
and s3 with
auth methods = guest netlogond
np:proxy = srvsvc samr winreg wkssvc netlogon ntlsa ntsvcs lsass lsarpc netdfs \
rpcecho initshutdown epmapper svcctl eventlog drsuapi
Then run rpcclient against samba4. It will fork s3, which authenticates against
s4, and then forwards the rpc requests to s4.
Volker
I looked at a checkout from 2002 and even there it did not what it was supposed
to do. Sadly this also removes one of the nicest comments in the whole Samba
code :-)
bugs in various places whilst doing this (places that assumed
BOOL == int). I also need to fix the Samba4 pidl generation
(next checkin).
Jeremy.
(This used to be commit f35a266b3c)
by saving the UNIX token used to set a delete on close flag,
and using it when doing the delete. libsmbsharemodes.so still
needs updating to cope with this change.
Samba4 torture tests to follow.
Jeremy.
(This used to be commit 23f16cbc2e)
Fix that, and also add in comments for all possible CL and CO PDU
types. Make sure we process them correctly.
Jeremy.
(This used to be commit 672113a627)
Don't count open pipes in the num_files_open on a connection.
conn_idle_all() handles this by looking for open rpc handles
If there are no open handles, we can close the IPC$ share.
(This used to be commit 747fba4dbf)
* \PIPE\unixinfo
* winbindd's {group,alias}membership new functions
* winbindd's lookupsids() functionality
* swat (trunk changes to be reverted as per discussion with Deryck)
(This used to be commit 939c3cb5d7)
functions so we can funnel through some well known functions. Should help greatly with
malloc checking.
HEAD patch to follow.
Jeremy.
(This used to be commit 620f2e608f)
netlogon session key and try to reconnect using that key. This fails with a
restarted smbd, we expect another serverauth2. XP falls back immediately.
Make the corresponding messages a debug level 3, not 0 to not flood log.smbd.
Volker
(This used to be commit 4fda68a62f)
- NTLM2 support in the server
- KEY_EXCH support in the server
- variable length session keys.
In detail:
- NTLM2 is an extension of NTLMv1, that is compatible with existing
domain controllers (unlike NTLMv2, which requires a DC upgrade).
* This is known as 'NTLMv2 session security' *
(This is not yet implemented on the RPC pipes however, so there may
well still be issues for PDC setups, particuarly around password
changes. We do not fully understand the sign/seal implications of
NTLM2 on RPC pipes.)
This requires modifications to our authentication subsystem, as we
must handle the 'challege' input into the challenge-response algorithm
being changed. This also needs to be turned off for
'security=server', which does not support this.
- KEY_EXCH is another 'security' mechanism, whereby the session key
actually used by the server is sent by the client, rather than being
the shared-secret directly or indirectly.
- As both these methods change the session key, the auth subsystem
needed to be changed, to 'override' session keys provided by the
backend.
- There has also been a major overhaul of the NTLMSSP subsystem, to merge the 'client' and 'server' functions, so they both operate on a single structure. This should help the SPNEGO implementation.
- The 'names blob' in NTLMSSP is always in unicode - never in ascii.
Don't make an ascii version ever.
- The other big change is to allow variable length session keys. We
have always assumed that session keys are 16 bytes long - and padded
to this length if shorter. However, Kerberos session keys are 8 bytes
long, when the krb5 login uses DES.
* This fix allows SMB signging on machines not yet running MIT KRB5 1.3.1. *
- Add better DEBUG() messages to ntlm_auth, warning administrators of
misconfigurations that prevent access to the privileged pipe. This
should help reduce some of the 'it just doesn't work' issues.
- Fix data_blob_talloc() to behave the same way data_blob() does when
passed a NULL data pointer. (just allocate)
REMEMBER to make clean after this commit - I have changed plenty of data structures...
(This used to be commit f3bbc87b0d)
There is a workaround documented in the bug report.
This patch does:
* add server support for the LSA_DS UUID on the lsarpc pipe
* store a list of context_ids/api_structs in the pipe_struct
so that we don't have to lookup the function table for a pipe.
We just match the context_id. Note that a dce/rpc alter_context
does not destroy the previous context so it is possible to
have multiple bindings active on the same pipe. Observed from
standalone win2k sp4 client.
* added server code for DsROleGetPrimaryDOmainInfo() but disabled it
since it causes problems enumerating users and groups from a 2ksp4
domain member in a Samba domain.
(This used to be commit 96bc2abfcb)
This time its the pdb_getsampwuid() function - which was only being used by the
SAMR rpc subsystem to gain a 'user session key'. This 'user session key' is
actually generated at login time, and the other changes here simply move that
data around.
This also means that (when I check some details) we will be able to use the
user session key, even when we are not actually the DC, becouse its one of the
components of the info3 struct returned on logon.
Andrew Bartlett
(This used to be commit 799ac01fe0)
degree of seperation betwen reading/writing the raw NamedPipe SMB packets
and the matching operations inside smbd's RPC components.
This patch is designed for no change in behaviour, and my tests hold that to be
true. This patch does however allow for the future loadable modules interface
to specify function pointers in replacement of the fixed state.
The pipes_struct has been split into two peices, with smb_np_struct taking the
information that should be generic to where the data ends up.
Some other minor changes are made: we get another small helper function in
util_sock.c and some of the original code has better failure debugs and
variable use. (As per on-list comments).
Andrew Bartlett
(This used to be commit 8ef13cabdd)
(ie. BIND, BINDRESP and ALTERCONTEXT) - if we don't do this then we don't set
the endianness flag correctly for these PDU's.
Herb - this should fix the bug you reported to me today.
Jeremy.
(This used to be commit dde795154c)
We were reading the endainness in the RPC header and then never propagating
it to the internal parse_structs used to parse the data.
Also removed the "align" argument to prs_init as it was *always* set to
4, and if needed can be set differently on a case by case basis.
Now ready for AS/U testing when Herb gets it set up :-).
Jeremy.
(This used to be commit 0cd37c831d)
I'm having problems with talloc_realloc in the 2.2 branch and I
want a stable reference.
The only problem is this breaks the clean auto-generated code
in *one* call in srv_spoolss.c (the rfnpcnex call).
Jeremy.
(This used to be commit 57a9340cba)
pool is getting bloated. Also added a talloc_zero function to return zeroed memory.
Added debug in rpc_server/srv_pipe_hnd.c so we know when a talloc pool is being
freed. Syncup with srv_pipe_hnd.c from 2.2 so we are freeing memory at the same time.
Jeremy.
(This used to be commit d3a56c6042)
Added a become_root()/unbecome_root() (push/pop security context)
around the initgroups() call to ensure it would succeed. Hmmm - I
wonder if this call being done as non-root might explain any "group access"
bugs we've had in the past....
Jeremy.
(This used to be commit 06a65972e8)
in the RPC code. This change was prompted by trying to save a long (>256)
character comment in the printer properties page.
The new system associates a TALLOC_CTX with the pipe struct, and frees
the pool on return of a complete PDU.
A global TALLOC_CTX is used for the odd buffer allocated in the BUFFERxx
code, and is freed in the main loop.
This code works with insure, and seems to be free of memory leaks and
crashes (so far) but there are probably the occasional problem with
code that uses UNISTRxx structs on the stack and expects them to contain
storage without doing a init_unistrXX().
This means that rpcclient will probably be horribly broken.
A TALLOC_CTX also needed associating with the struct cli_state also,
to make the prs_xx code there work.
The main interface change is the addition of a TALLOC_CTX to the
prs_init calls - used for dynamic allocation in the prs_XXX calls.
Now this is in place it should make dynamic allocation of all RPC
memory on unmarshall *much* easier to fix.
Jeremy.
(This used to be commit 0ff2ce543e)
structure so authenticated pipe users can have their unix groups set when
become_authenticated_pipe_user() is called.
(This used to be commit 55c9bf124d)
Problem in prs_set_buffer_size() was Realloc returns a NULL when newsize is zero (equivalent to a free()). We were returning a failure here without resetting the buffer_size or the data_p pointer in the prs_struct. And we weren't checking for a failure from prs_set_buffer_size(). So realloc's to zero size were not reflected in the prs_struct: memory leak.
(This used to be commit 590d9ece84)
this adds "#define OLD_NTDOMAIN 1" in lots of places. Don't panic -
this isn't permanent, it should go after another few merge steps have
been done
(This used to be commit 92109d7b3c)
rpc_server/srv_pipe_hnd.c: Bring into sync with 2.0.x.
smbd/blocking.c: Improve blocking debug reporting.
utils/torture.c: Added check for NT locking bug.
Jeremy.
(This used to be commit e8ff6d3fb5)
userdom_struct. As the name implies this also contains a domain
(unused at the moment).
This will be important shortly, as operation in appliance mode needs
the domain to be always carried with the username.
(This used to be commit ee8546342d)
and the printer functions.
Also tidied up some header includes and got the order right so you
can now do a :
make proto
make clean
make
Jeremy.
(This used to be commit 833cd9fba9)
nmbd/nmbd_processlogon.c: Use "True" and "False" instead of 1 and 0.
Others - preparing for multiple pdu write code.
Jeremy.
(This used to be commit 9f879ec396)
is *missing* from samba cvs main, therefore it is set to all zeros.
this will cause, amongst other things, administrator-changing-user-passwords,
and setting up new accounts, to fail, as the user's password can only be
decoded with the session key (in this case, the administrator's usr sess key).
it's never a perfect world, is it?
(This used to be commit 3362fcdfa4)
done a minimal amout of clean-up in the Makefile, removing unnecessary
modules from the link stage. this is not complete, yet, and will
involve some changes, for example to smbd, to remove dependencies on
the password database API that shouldn't be there. for example,
smbd should not ever call getsmbpwXXX() it should call the Samr or Lsa
API.
this first implementation has minor problems with not reinstantiating
the same services as the caller. the "homes" service is a good example.
(This used to be commit caa5052522)
pdus, and then feeds them over either a "local" function call or a "remote"
function call to an msrpc service. the "remote" msrpc daemon, on the
other side of a unix socket, then calls the same "local" function that
smbd would, if the msrpc service were being run from inside smbd.
this allows a transition from local msrpc services (inside the same smbd
process) to remote (over a unix socket).
removed reference to pipes_struct in msrpc services. all msrpc processing
functions take rpcsrv_struct which is a structure containing state info
for the msrpc functions to decode and create pdus.
created become_vuser() which does everything not related to connection_struct
that become_user() does.
removed, as best i could, connection_struct dependencies from the nt spoolss
printing code.
todo: remove dcinfo from rpcsrv_struct because this stores NETLOGON-specific
info on a per-connection basis, and if the connection dies then so does
the info, and that's a fairly serious problem.
had to put pretty much everything that is in user_struct into parse_creds.c
to feed unix user info over to the msrpc daemons. why? because it's
expensive to do unix password/group database lookups, and it's definitely
expensive to do nt user profile lookups, not to mention pretty difficult
and if you did either of these it would introduce a complication /
unnecessary interdependency. so, send uid/gid/num_groups/gid_t* +
SID+num_rids+domain_group_rids* + unix username + nt username + nt domain
+ user session key etc. this is the MINIMUM info identified so far that's
actually implemented. missing bits include the called and calling
netbios names etc. (basically, anything that can be loaded into
standard_sub() and standard_sub_basic()...)
(This used to be commit aa3c659a8d)
one horrible cut / paste job from smbd, plus a code split of shared
components between the two.
the job is not _yet_ complete, as i need to be able to do a become_user()
call for security reasons. i picked lsarpcd first because you don't
_need_ security on it (microsoft botched so badly on this one, it's not
real. at least they fixed this in nt5 with restrictanonymous=0x2).
fixing this involves sending the current smb and unix credentials down
the unix pipe so that the daemon it eventually goes to can pick them
up at the other end.
i can't believe this all worked!!!
(This used to be commit 2245b0c6d1)
----------------------------
- removed DOM_RID4
- removed SAMR_UNKNOWN_32
- added SAMR_SET_USERINFO (opcode 0x32)
- added level 0x1 to SAMR_QUERY_DOM_INFO (needed for create user)
- fixed pwdb_gethexpwd() it was failing on XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
- added mod_sam21pwd_entry()
- preparing to call mod_sam21pwd_entry()
- added "user session key" to user_struct.dc. this is md4(nt#) and is
needed to decode user's clear-text passwords in SAMR_SET_USERINFO.
- split code out in chgpasswd.c to decode 516 byte password buffers.
(This used to be commit 2e58ed7424)
this_pdu_data_pos = data_pos - p->prev_pdu_file_offset;
is correct for first two PDU's only, after that it results in extra
garbage after each fragment and hence "Protocol Error" messages from
NT4 SP4. Changed to:
this_pdu_data_pos = (pdu_data_sent == 0) ? 0 : (pdu_data_sent - 0x18);
(This used to be commit b9e8a3ef3a)
smb.tgz file from my portable.
particularly the call to mem_data followed by a realloc of that data in
cli_pipe.c's rpc_read() function.
smbd responses now use p->rdata_i which is a faked-up pointer into
p->rdata's response data. rdata can be very long; rdata_i is limited
to point to no more than max_tsize - 0x18 in length. this will make
it an almost trivial task to add the encrypted rpc headers after
rdata_i, and mem_buf_copy will cope admirably with rhdr chained to
rdata_i chained to auth_verifier etc etc...
(This used to be commit 05a297e3a9)
AS/U:
it returns dce/rpc "first" and "last" bits _clear_ in a bind/ack
response, when they should be set in a (small) packet. they also,
in the bind/ack do not set a secondary address string at all, so
we can't check against that...
Win95:
client-side dce/rpc code is a bit odd. it does a "WaitNamedPipeState"
and has slightly different pipe-naming (\PIPE\LANMAN is joined by
\PIPE\SRVSVC, \PIPE\WINREG etc whereas nt just has \PIPE\LANMAN
and \PIPE\).
Win95-USRMGR.EXE:
added LsaOpenPolicy (renamed existing to LsaOpenPolicy2).
added SamrConnect (renamed existing to SamrConnect2).
(This used to be commit a7fccd807b)
Sets up the files array correctly - limited by the smb.conf parameter
and by the max fd's per process as found by getrlimit().
Jeremy.
(This used to be commit eca24bd243)
uid_t, gid_t and vuid. Added sys_getgroups() to get
around the int * return problem. Set correct datatypes
for all uid, gid and vuid variables.
Jeremy.
(This used to be commit e570db46fc)
winreg was missing from the list of pipes. advise using the array
already defined in... rpc_parse/parse_rpc.c's pipe_names[], but
writing code to strip "\PIPE\" from the front when making the
check.
one location to update when adding new pipes, not two.
srv_pipe_hnd.c:
moved the ZERO_STRUCT(p) macro to _before_ the DLIST_ADD(Pipes, p) macro.
dlinklist.h:
added { }s around the code inserted by DLIST_ADD and DLIST_REMOVE macros
(This used to be commit 29201d4b9b)
prompted by the interpret_security() dead code that Jean-Francois
pointed out I added a make target "finddead" that finds potentially
dead (ie. unused) code. It spat out 304 function names ...
I went through these are deleted many of them, making others static
(finddead also reports functions that are used only in the local
file).
in doing this I have almost certainly deleted some useful code. I may
have even prevented compilation with some compile options. I
apologise. I decided it was better to get rid of this code now and add
back the one or two functions that are needed than to keep all this
baggage.
So, if I have done a bit too much "destroying" then let me know. Keep
the swearing to a minimum :)
One bit I didn't do is the ubibt code. Chris, can you look at that?
Heaps of unused functions there. Can they be made static?
(This used to be commit 2204475c87)
very large. files.c now promotes a files_struct to the top of the list
if it is used when it is more than 10 elements from the top.
also moved common linked list code for the 5 sets of linked lists that
I've created over the past few days into dlinklist.h (I've explained
to Chris why I didn't use the ubiqx code)
(This used to be commit 1eb9ae2996)
the chain pointer is now stored as a static and is set whenever a
handle is created or extracted. This also makes the code less error
prone.
(This used to be commit 068a862982)
removed most cases where a pnum is used and substituted a pipes_struct*.
in files.c I added a offset of 0x1000 to all file handles on the
wire. This makes it much less likely that bad parsing will give us the
wrong field.
(This used to be commit 8bc2627ff2)
Connections[] is now a local array in server.c
I might have broken something with this change. In particular the
oplock code is suspect and some .dll files aren't being oplocked when
I expected them to be. I'll look at it after I've got some sleep.
(This used to be commit c7ee025ead)
turns out that [it can be deduced that] microsoft ignores the SMBreadX
offset, and goes by the SMBreadX length only. this makes for a lot simpler
code, in both client and server.
(This used to be commit a8b641c027)
