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NTLM Authentication:
- Add a 'privileged' mode to Winbindd. This is achieved by means of a directory
under lockdir, that the admin can change the group access for.
- This mode is now required to access with 'CRAP' authentication feature.
- This *will* break the current SQUID helper, so I've fixed up our ntlm_auth
replacement:
- Update our NTLMSSP code to cope with 'datagram' mode, where we don't get a
challenge.
- Use this to make our ntlm_auth utility suitable for use in current Squid 2.5
servers.
- Tested - works for Win2k clients, but not Win9X at present. NTLMSSP updates
are needed.
- Now uses fgets(), not x_fgets() to cope with Squid environment (I think
somthing to do with non-blocking stdin).
- Add much more robust connection code to wb_common.c - it will not connect to
a server of a different protocol version, and it will automatically try and
reconnect to the 'privileged' pipe if possible.
- This could help with 'privileged' idmap operations etc in future.
- Add a generic HEX encode routine to util_str.c,
- fix a small line of dodgy C in StrnCpy_fn()
- Correctly pull our 'session key' out of the info3 from th the DC. This is
used in both the auth code, and in for export over the winbind pipe to
ntlm_auth.
- Given the user's challenge/response and access to the privileged pipe,
allow external access to the 'session key'. To be used for MSCHAPv2
integration.
Andrew Bartlett
- Add a 'privileged' mode to Winbindd. This is achieved by means of a directory
under lockdir, that the admin can change the group access for.
- This mode is now required to access with 'CRAP' authentication feature.
- This *will* break the current SQUID helper, so I've fixed up our ntlm_auth
replacement:
- Update our NTLMSSP code to cope with 'datagram' mode, where we don't get a
challenge.
- Use this to make our ntlm_auth utility suitable for use in current Squid 2.5
servers.
- Tested - works for Win2k clients, but not Win9X at present. NTLMSSP updates
are needed.
- Now uses fgets(), not x_fgets() to cope with Squid environment (I think
somthing to do with non-blocking stdin).
- Add much more robust connection code to wb_common.c - it will not connect to
a server of a different protocol version, and it will automatically try and
reconnect to the 'privileged' pipe if possible.
- This could help with 'privileged' idmap operations etc in future.
- Add a generic HEX encode routine to util_str.c,
- fix a small line of dodgy C in StrnCpy_fn()
- Correctly pull our 'session key' out of the info3 from th the DC. This is
used in both the auth code, and in for export over the winbind pipe to
ntlm_auth.
- Given the user's challenge/response and access to the privileged pipe,
allow external access to the 'session key'. To be used for MSCHAPv2
integration.
Andrew Bartlett
Small clenaup patches:
- safe_string.h - don't assume that __FUNCTION__ is available
- process.c - use new workaround from safe_string.h for the same
- util.c - Show how many bytes we smb_panic()ed trying to smb_xmalloc()
- gencache.c - Keep valgrind quiet by always null terminating.
- clistr.c - Add copyright
- srvstr.h - move srvstr_push into a .c file again, as a real function.
- srvstr.c - revive, with 'safe' checked srvstr_push
- loadparm.c - set a default for the display charset.
- connection.c - use safe_strcpy()
Andrew Bartlett
- safe_string.h - don't assume that __FUNCTION__ is available
- process.c - use new workaround from safe_string.h for the same
- util.c - Show how many bytes we smb_panic()ed trying to smb_xmalloc()
- gencache.c - Keep valgrind quiet by always null terminating.
- clistr.c - Add copyright
- srvstr.h - move srvstr_push into a .c file again, as a real function.
- srvstr.c - revive, with 'safe' checked srvstr_push
- loadparm.c - set a default for the display charset.
Andrew Bartlett
A much better SMB signing module, that allows for mulitple signing algorithms
and correctly backs down from signing when the server cannot sign the reply.
This also attempts to enable SMB signing on NTLMSSP connections, but I don't
know what NTLMSSP flags to set yet.
This would allow 'client use signing' to be set by default, for server
compatability. (A seperate option value should be provided for mandetory
signing, which would not back down).
Andrew Bartlett
This patch catches up on the rest of the work - as much string checking
as is possible is done at compile time, and the rest at runtime.
Lots of code converted to pstrcpy() etc, and other code reworked to correctly
call sizeof().
Andrew Bartlett
- Make ReadDirName return a const char*.
- Consequential changes from that
- mark our fstring/pstring assumptions in function prototypes
Andrew Bartlett
This patch enables the compile-time checking of strings assable by means of
sizeof(). (Original code had the configure check reversed).
This is extended to all safe_strcpy() users, push_string and pull_string,
as well as the cli and srv derivitives. There is an attempt to cap strings
at the end of the cli buffer, and clobber_region() of the speified length
(when not -1 :-).
Becouse of the way they are declared, the 'overmalloc a string' users of
safe_strcpy() have been changed to use overmalloc_safe_strcpy() (which skips
some of the checks).
This whole ball of mud worked fine, until I pulled out my 'fix' for our
statcache. When jeremy fixes that, we should be able to get back to testing
this stuff.
This patch also includes a 'marker' of the last caller to clobber_region (ie,
the function that called pstrcpy() that called clobber_region) to assist in
debugging problems that may have smashed the stack. This is printed at
smb_panic() time. (Original idea and patch by metze).
It also removes some unsused functions, and #if 0's some others that are
unused but probably should be used in the near future.
For now, this patch gives us some confidence on one class of trivial parsing
error in our code.
Andrew Bartlett
- packing/unpacking utility functions for trusted domain
password struct; can be used to prepare buffer to store
in secrets.tdb or (soon) passdb backend
- similiar functions for DOM_SID
- respectively modified secrets_(fetch|store) routines
- new auth mapping code utilising introduced is_trusted_domain
function
- added tdb (un)packing of single bytes
Rafal
get Win2k to send a valid signiture in it's session setup reply - which it will
give to win2k clients.
So, I need to look at becoming 'more like MS', but for now I'll get this code
into the tree. It's actually based on the TNG cli_pipe_ntlmssp.c, as it was
slightly easier to understand than our own (but only the utility functions
remain in any way intact...).
This includes the mysical 'NTLM2' code - I have no idea if it actually works.
(I couldn't get TNG to use it for its pipes either).
Andrew Bartlett
The intention is to allow for NTLMSSP and kerberos signing of packets, but
for now it's just what I call 'simple' signing. (aka SMB signing per the SNIA
spec)
Andrew Bartlett
-------------------------------------------------------------------------
I think there are basically two problem:
1. Windows clients do not always send ACEs for SMB_ACL_USER_OBJ, SMB_ACL_GROUP_OBJ,
and SMB_ACL_OTHER.
The function ensure_canon_entry_valid() is prepared for that, but tries
to "guess" values from group or other permissions, respectively, otherwise
falling back to minimum r-- for the owner. Even if the owner had full
permissions before setting ACL. This is the problem with W2k clients.
2. Function set_nt_acl() always chowns *before* attempting to set POSIX ACLs.
This is ok in a take-ownership situation, but must fail if the file is
to be given away. This is the problem with XP clients, trying to transfer
ownership of the original file to the temp file.
The problem with NT4 clients (no ACEs are transferred to the temp file, thus
are lost after moving the temp file to the original name) is a client problem.
It simply doesn't attempt to.
I have played around with that using posic_acls.c from 3.0 merged into 2.2.
As a result I can now present two patches, one for each branch. They
basically modify:
1. Interpret missing SMB_ACL_USER_OBJ, SMB_ACL_GROUP_OBJ, or SMB_ACL_OTHER
as "preserve current value" instead of attempting to build one ourself.
The original code is still in, but only as fallback in case current values
can't be retrieved.
2. Rearrange set_nt_acl() such that chown is only done before setting
ACLs if there is either no change of owning user, or change of owning
user is towards the current user. Otherwise chown is done after setting
ACLs.
It now seems to produce reasonable results. (Well, as far as it can. If
NT4 doesn't even try to transfer ACEs, only deliberate use of named default
ACEs and/or "force group" or the crystal ball can help :)
-------------------------------------------------------------------------
Jeremy.
