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This should be the correct fix for the valgrind erorr Volker found in
744ed53a62. This fix avoids putting
SPNEGO into the list twice when we are in the CRED_DONT_USE_KERBEROS
case.
Andrew Bartlett
This reverts commit 744ed53a62.
The real bug here is that the second half of the outer loop should not
have been run once we found spnego.
Andrew Bartlett
Without this I get the following valgrind error:
==27740== Invalid write of size 8
==27740== at 0x62C53E: gensec_use_kerberos_mechs (gensec_start.c:112)
==27740== by 0x62C623: gensec_security_mechs (gensec_start.c:141)
==27740== by 0x62C777: gensec_security_by_oid (gensec_start.c:181)
==27740== by 0x62DD6E: gensec_start_mech_by_oid (gensec_start.c:735)
==27740== by 0x50D6FD: negprot_spnego (negprot.c:210)
==27740== by 0x5B0DEA: smbd_smb2_request_process_negprot (smb2_negprot.c:209)
==27740== by 0x5AD036: smbd_smb2_request_dispatch (smb2_server.c:1417)
==27740== by 0x5AFB77: smbd_smb2_first_negprot (smb2_server.c:2643)
==27740== by 0x585C00: process_smb (process.c:1641)
==27740== by 0x587F78: smbd_server_connection_read_handler (process.c:2314)
==27740== by 0x587FD6: smbd_server_connection_handler (process.c:2331)
==27740== by 0x99E05B: run_events_poll (events.c:286)
==27740== by 0x584AFF: smbd_server_connection_loop_once (process.c:984)
==27740== by 0x58B2D9: smbd_process (process.c:3389)
==27740== by 0xDE4CA8: smbd_accept_connection (server.c:469)
==27740== by 0x99E05B: run_events_poll (events.c:286)
==27740== by 0x99E2D5: s3_event_loop_once (events.c:349)
==27740== by 0x99F990: _tevent_loop_once (tevent.c:504)
==27740== by 0xDE5A9B: smbd_parent_loop (server.c:869)
==27740== by 0xDE6DD8: main (server.c:1413)
==27740== Address 0x9ff3538 is 4,232 bytes inside a block of size 8,288 alloc'd
==27740== at 0x4C261D7: malloc (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==27740== by 0x6926965: __talloc (talloc.c:560)
==27740== by 0x6926771: talloc_pool (talloc.c:598)
==27740== by 0x93B927: talloc_stackframe_internal (talloc_stack.c:145)
==27740== by 0x93B9D6: talloc_stackframe_pool (talloc_stack.c:171)
==27740== by 0x58B2B7: smbd_process (process.c:3385)
==27740== by 0xDE4CA8: smbd_accept_connection (server.c:469)
==27740== by 0x99E05B: run_events_poll (events.c:286)
==27740== by 0x99E2D5: s3_event_loop_once (events.c:349)
==27740== by 0x99F990: _tevent_loop_once (tevent.c:504)
==27740== by 0xDE5A9B: smbd_parent_loop (server.c:869)
==27740== by 0xDE6DD8: main (server.c:1413)
In the for-loop we can increment j twice, so we need twice as many output array
elements as input array elements.
Autobuild-User: Volker Lendecke <vl@samba.org>
Autobuild-Date: Thu Feb 9 19:44:47 CET 2012 on sn-devel-104
This avoids casting to and from the struct auth_user_info_dc *user_info_dc
to to this, the
if (user_info_dc->info->authenticated)
is moved into auth_generate_session_info_wrapper(), which is the
function that gensec_security->auth_context->generate_session_info
points to.
Andrew Bartlett
Both use gss_krb5_lucid_context_v1_t now.
metze
Autobuild-User: Stefan Metzmacher <metze@samba.org>
Autobuild-Date: Wed Jan 25 10:22:31 CET 2012 on sn-devel-104
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Autobuild-User: Stefan Metzmacher <metze@samba.org>
Autobuild-Date: Wed Jan 18 19:29:40 CET 2012 on sn-devel-104
These are optional to supply - some callers only provide an auth_context for the
other plugin functions, and so we need to deal with this cleanly.
Andrew Bartlett
Signed-off-by: Stefan Metzmacher <metze@samba.org>
This will make it easier to share elements of the GSSAPI gensec mechs,
in much the same way elements of the NTLMSSP mech are shared.
Andrew Bartlett
Signed-off-by: Stefan Metzmacher <metze@samba.org>
This uses a single callback to handle the PAC from the DATA_BLOB
format until it becomes a struct auth_session_info.
This allows a seperation between the GSS acceptor code and the PAC
interpretation code based on the supplied auth context.
Andrew Bartlett
Autobuild-User: Andrew Bartlett <abartlet@samba.org>
Autobuild-Date: Thu Dec 29 01:10:59 CET 2011 on sn-devel-104
This will allow s3 to specify modules to use as a list, rather than
needing to start the individual module with gensec_start_mech_by_ops()
Andrew Bartlett
This library was tiny - containing just two public functions than were
themselves trivial. The amount of overhead this causes isn't really worth the
benefits of sharing the code with other projects like OpenChange. In addition, this code
isn't really generically useful anyway, as it can only load from the module path
set for Samba at configure time.
Adding a new library was breaking the API/ABI anyway, so OpenChange had to be
updated to cope with the new situation one way or another. I've added a simpler
(compatible) routine for loading modules to OpenChange, which is less than 100 lines of code.
Autobuild-User: Jelmer Vernooij <jelmer@samba.org>
Autobuild-Date: Sat Dec 3 08:36:33 CET 2011 on sn-devel-104
We don't talloc_reference for tsocket_addresses.
metze
Autobuild-User: Stefan Metzmacher <metze@samba.org>
Autobuild-Date: Mon Oct 24 15:29:47 CEST 2011 on sn-devel-104
This avoids keeping the event context around on a the gensec_security
context structure long term.
In the Samba3 server, the event context we either supply is a NULL
pointer as no server-side modules currently use the event context.
Andrew Bartlett
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Because of the calling convention, this is the best place to assert
that we have not been subject to a downgrade attack on the negotiated
features. (In DCE/RPC, this isn't a negotiation, the client simply
specifies the level of protection that is required).
Andrew Bartlett
(some formatting fixes)
Signed-off-by: Stefan Metzmacher <metze@samba.org>
If you do not specify one however, you better know that the modules
you are using do not need one!
Andrew Bartlett
Signed-off-by: Stefan Metzmacher <metze@samba.org>
This is slightly less efficient, because we no longer keep a cache on
the gensec structures, but much clearer in terms of memory ownership.
Both gensec_session_info() and gensec_session_key() now take a mem_ctx
and put the result only on that context.
Some duplication of memory in the callers (who were rightly uncertain
about who was the rightful owner of the returned memory) has been
removed to compensate for the internal copy.
Andrew Bartlett
The startup and runtime functions that have no dependencies are moved
into the top level.
Andrew Bartlett
Signed-off-by: Andrew Tridgell <tridge@samba.org>
