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to pstr_sprintf() and fstr_sprintf() to try to standardize.
lots of snprintf() calls were using len-1; some were using
len. At least this helps to be consistent.
(This used to be commit 9f835b85dd)
Ensure a server can't do a downgrade attack if client signing is mandatory.
Add a lp_server_signing() function and a 'server signing' parameter that
will act as the client one does.
Jeremy
(This used to be commit 203e4bf0bf)
It's so simple now I know how it works - and it has nothing to do with
NTLMSSP (it's just a slightly different use of the old algorithm). :-).
Note: This is actually less secure then the non-NTLMSSP code, as there is
no per-session random data included for NTLM logins. (NTLMv2 is better,
fortunetly).
Andrew Bartlett
(This used to be commit 95ec8317d4)
the schannel code, but I've included that anyway. :-)
This patch revives the client-side NTLMSSP support for RPC named pipes
in Samba, and cleans up the client and server schannel code. The use of the
new code is enabled by the 'sign', 'seal' and 'schannel' commands in
rpcclient.
The aim was to prove that our separate NTLMSSP client library actually
implements NTLMSSP signing and sealing as per Microsoft's NTLMv1 implementation,
in the hope that knowing this will assist us in correctly implementing
NTLMSSP signing for SMB packets. (Still not yet functional)
This patch replaces the NTLMSSP implementation in rpc_client/cli_pipe.c with
calls to libsmb/ntlmssp.c. In the process, we have gained the ability to
use the more secure NT password, and the ability to sign-only, instead of
having to seal the pipe connection. (Previously we were limited to sealing,
and could only use the LM-password derived key).
Our new client-side NTLMSSP code also needed alteration to cope with our
comparatively simple server-side implementation. A future step is to replace
it with calls to the same NTLMSSP library.
Also included in this patch is the schannel 'sign only' patch I submitted to
the team earlier. While not enabled (and not functional, at this stage) the
work in this patch makes the code paths *much* easier to follow. I have also
included similar hooks in rpccleint to allow the use of schannel on *any* pipe.
rpcclient now defaults to not using schannel (or any other extra per-pipe
authenticiation) for any connection. The 'schannel' command enables schannel
for all pipes until disabled.
This code is also much more secure than the previous code, as changes to our
cli_pipe routines ensure that the authentication footer cannot be removed
by an attacker, and more error states are correctly handled.
(The same needs to be done to our server)
Andrew Bartlett
(This used to be commit 5472ddc9ea)
*) consolidates the dc location routines again (dns
and netbios) get_dc_list() or get_sorted_dc_list()
is the authoritative means of locating DC's again.
(also inludes a flag to get_dc_list() to define
if this should be a DNS only lookup or not)
(however, if you set "name resolve order = hosts wins"
you could still get DNS queries for domain name IFF
ldap_domain2hostlist() fails. The answer? Fix your DNS
setup)
*) enabled DOMAIN<0x1c> lookups to be funneled through
resolve_hosts resulting in a call to ldap_domain2hostlist()
if lp_security() == SEC_ADS
*) enables name cache for winbind ADS backend
*) enable the negative connection cache for winbind
ADS backend
*) removes some old dead code
*) consolidates some duplicate code
*) moves the internal_name_resolve() to use an IP/port pair
to deal with SRV RR dns replies. The namecache code
also supports the IP:port syntax now as well.
*) removes 'ads server' and moves the functionality back
into 'password server' (which can support "hostname:port"
syntax now but works fine with defaults depending on
the value of lp_security())
(This used to be commit d7f7fcda42)
(this now causes things like the LANMAN protocol and contacting servers with 'encrypt passwords = no' set to fail, if configured)
'client ntlmv2 auth' (a BOOL) forces both plaintext and lanman off, and is the
most secure setting for compatible hosts.
Perhaps we should change this to 'client minimum auth'?
Andrew Bartlett
(This used to be commit e1fb681e4c)
With big thanks to tpot for the ethereal disector, and for the base code
behind this, we now fully support NTLMv2 as a client.
In particular, we support it with direct domain logons (tested with ntlm_auth
--diagnostics), with 'old style' session setups, and with NTLMSSP.
In fact, for NTLMSSP we recycle one of the parts of the server's reply directly...
(we might need to parse for unicode issues later).
In particular, a Win2k domain controller now supplies us with a session key
for this password, which means that doman joins, and non-spnego SMB signing
are now supported with NTLMv2!
Andrew Bartlett
(This used to be commit 9f6a26769d)
key, so we can test it in ntlm_auth.
I suspect the 'lm' version doesn't exist, but it's easy to change back.
Andrew Bartlett
(This used to be commit 5efd95622c)
just the correct error.
This should help us avoid breaking NT4 IPC$ connections, for example.
This has required that we don't overwrite the device type for IPC$ in our
tcon&X code, but only smbwrapper even uses it, and a server that doesn't send
a correct dev type breaks other things pretty badly.
In any case, I'll 'fix' smbwrapper :-).
Andrew Bartlett
(This used to be commit a93057efcb)
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 used to be commit 1c87be7a3d)
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
(This used to be commit c5b604e2ee)
- new kerberos code, allowing the account to change it's own password
without special SD settings required
- NTLMSSP client code, now seperated from cliconnect.c
- NTLMv2 client code
- SMB signing fixes
Andrew Bartlett
(This used to be commit 837680ca51)
- NTLMSSP over SPENGO (sesssion-setup-and-x) cleanup and code refactor.
- also consequential changes to the NTLMSSP and SPNEGO parsing functions
- and the client code that uses the same functions
- Add ntlm_auth, a NTLMSSP authentication interface for use by applications
like Squid and Apache.
- also consquential changes to use common code for base64 encode/decode.
- Winbind changes to support ntlm_auth (I don't want this program to need
to read smb.conf, instead getting all it's details over the pipe).
- nmbd changes for fstrcat() instead of fstrcpy().
Andrew Bartlett
(This used to be commit fbb46da79c)
- change auth_sam to use the initialisation flags to determine if
the password attributes are set
- add const to secrets.c, cliconnect.c
- passdb: fix spelling in pdb_ldap, add group mapping back to smbpasswd
- SAMR: add debugs to show what fails for group enum.
Andrew Bartlett
(This used to be commit 4e74d00b36)
- Fix segfaults in the 'net ads' commands when no password is provided
- Readd --with-ldapsam for 2.2 compatability. This conditionally compiles the
old options, but the actual code is available on all ldap systems.
- Fix shadow passwords (as per work with vl)
- Fix sending plaintext passwords to unicode servers (again vl)
- Add a bit of const to secrets.c functions
- Fix some spelling and grammer by vance.
- Document the -r option in smbgroupedit.
There are more changes in HEAD, I'm only merging the changes I've been involved
with.
Andrew Bartlett
(This used to be commit 83973c3893)
bytes which follow the header, not the full packet size.
[Yes, the length field is either 17-bits, or (per the RFCs) it is a
16-bit length field preceeded by an 8-bit flags field of which only
the low-order bit may be used. If that bit is set, then add 65536 to
the 16-bit length field. (In other words, it's a 17-bit unsigned
length field.)
...unless, of course, the transport is native TCP [port 445] in which
case the length field *might* be 24-bits wide.]
Anyway, the change is a very minor one. We were including the four bytes
of the header in the length count and, as a result, sending four bytes of
garbage at the end of the SESSION REQUEST packet.
Small fix in function cli_session_request().
(This used to be commit d08471688b)
This fixes up a problem where a machine would join (or downgrade by trust
password change) to NT4 membership and not be able to regain full ADS
membership until a 'net ads leave'.
Andrew Bartlett
(This used to be commit ab8ff85f03)
'net' untility.
This should make it easier to port rpcclient code across to net.
It also allows SPNEGO (the NTLMSSP subsystem in particular) to work, becouse
it kills off the early destruction of the clear-text password.
Andrew Bartlett
(This used to be commit eee925861a)
samba domain.
The PDC must be running a special authenticaion module that spits out NT errors
based on username.
Andrew Bartlett
(This used to be commit adc7a6048c)
subystem.
The particular aim is to modularized the interface - so that we
can have arbitrary password back-ends.
This code adds one such back-end, a 'winbind' module to authenticate
against the winbind_auth_crap functionality. While fully-functional
this code is mainly useful as a demonstration, because we don't get
back the info3 as we would for direct ntdomain authentication.
This commit introduced the new 'auth methods' parameter, in the
spirit of the 'auth order' discussed on the lists. It is renamed
because not all the methods may be consulted, even if previous
methods fail - they may not have a suitable challenge for example.
Also, we have a 'local' authentication method, for old-style
'unix if plaintext, sam if encrypted' authentication and a
'guest' module to handle guest logins in a single place.
While this current design is not ideal, I feel that it does
provide a better infrastructure than the current design, and can
be built upon.
The following parameters have changed:
- use rhosts =
This has been replaced by the 'rhosts' authentication method,
and can be specified like 'auth methods = guest rhosts'
- hosts equiv =
This needs both this parameter and an 'auth methods' entry
to be effective. (auth methods = guest hostsequiv ....)
- plaintext to smbpasswd =
This is replaced by specifying 'sam' rather than 'local'
in the auth methods.
The security = parameter is unchanged, and now provides defaults
for the 'auth methods' parameter.
The available auth methods are:
guest
rhosts
hostsequiv
sam (passdb direct hash access)
unix (PAM, crypt() etc)
local (the combination of the above, based on encryption)
smbserver (old security=server)
ntdomain (old security=domain)
winbind (use winbind to cache DC connections)
Assistance in testing, or the production of new and interesting
authentication modules is always appreciated.
Andrew Bartlett
(This used to be commit 8d31eae52a)
open to w2k
- fix the string handling in the device name to match NT and smbd
- don't pull the domain from negprot if CAP_EXTENDED_SECURITY is set
(This used to be commit 618989b386)
Andrew Bartlett.
From kai@cmail.ru Mon Oct 29 18:50:42 2001
Date: Fri, 19 Oct 2001 17:26:06 +0300
From: Andrew V. Samoilov <kai@cmail.ru>
To: samba-technical@lists.samba.org
Subject: [patch]: makes some arrays const to be shared between processes
Hi!
This patch makes some arrays const. So these arrays go to text/rodata
segment and are shared between all of the processes which use shared
library with these arrays.
Regards,
Andrew V. Samoilov.
P.S. Please cc your answer to kai@cmail.ru,
I don't subscribed to this list.
ChangeLog:
* cliconnect.c (prots): Make const.
* clierror.c (rap_errmap): Likewise.
* nmblib.c (nmb_header_opcode_names): Likewise.
(lookup_opcode_name): Make opcode_namep const. Eliminate i.
* nterr.c (nt_err_code_struct): Typedef const.
* smberr.c (err_code_struct): Make const.
(err_classes): Likewise.
(This used to be commit cb84485a2b)
NTLMSSP in cli_establish_connection()
What we really need to do is kill off the pwd_cache code. It is horrible,
and assumes the challenge comes in the negprot reply.
(This used to be commit 3f919b4360)
loses things like username mapping. I wanted to get this in then
discuss it a bit to see how we want to split up the existing
session setup code
(This used to be commit b74fda69bf)
packet which means I can extract the service and realm, so we should
now work with realms other than the local realm.
it also means we now check the list of OIDs given by the server just
in case it says that it doesn't support kerberos. In that case we
should fall back to NTLMSSP but that isn't written yet.
(This used to be commit 395cfeea94)
activate you need to:
- install krb5 libraries
- run configure
- build smbclient
- run kinit to get a TGT
- run smbclient with the -k option to choose kerberos auth
(This used to be commit d330575856)
out the error handling into a bunch of separate functions rather than all
being handled in one big function.
Fetch error codes from the last received packet:
void cli_dos_error(struct cli_state *cli, uint8 *eclass, uint32 *num);
uint32 cli_nt_error(struct cli_state *);
Convert errors to UNIX errno values:
int cli_errno_from_dos(uint8 eclass, uint32 num);
int cli_errno_from_nt(uint32 status);
int cli_errno(struct cli_state *cli);
Detect different kinds of errors:
BOOL cli_is_dos_error(struct cli_state *cli);
BOOL cli_is_nt_error(struct cli_state *cli);
BOOL cli_is_error(struct cli_state *cli);
This also means we now support CAP_STATUS32 as we can decode and understand
NT errors instead of just DOS errors. Yay!
Ported a whole bunch of files in libsmb to use this new API instead of the
just the DOS error.
(This used to be commit 6dbdb0d813)
This commit gets rid of all our old codepage handling and replaces it with
iconv. All internal strings in Samba are now in "unix" charset, which may
be multi-byte. See internals.doc and my posting to samba-technical for
a more complete explanation.
(This used to be commit debb471267)
allow us to have test targets without special configure options
- fixed make proto so that it actually does something
(This used to be commit 55109a7525)
that libsmb/ creates a local tcp socket then launches smbd as a subprocess
attached to that socket. smbd thinks it is being launched from inetd.
to use it do the following:
- compile with -DSMB_REGRESSION_TEST
- run like this (also works with smbtorture etc)
export SMBD_TEST=1
export LIBSMB_PROG=bin/smbd
smbclient //server/share -Uuser%pass
obviously you need to setup a smb.conf etc. Using --prefix to configure
is useful.
The aim of all this stuff is to add a decent set of regression tests
to the build farm, so we know if smbd actually runs correctly on all the
platforms, not just builds. We can run smbtorture, masktest, locktest etc,
plus a bunch of smbclient scripts and any new tests we write.
This doesn't help much with nmbd (at least not yet) but its a good start.
(This used to be commit 7e8e6ae9a8)
send unaligned unicode strings sometimes!
Fixed our handling of the workgroup name tacked on the end of the
NT1 negprot response (a unaligned unicode)
fixed a couple of places where we should be using the message_end fns instead
of pre-calculated buffer lengths
(This used to be commit 86613493a9)
back to working order. The main change is that the cli_*() RPC
functions from libsmb/*.c now should accept a struct cli_state*.
The reason for this is that rpcclient should establish the
connection to the server at startup so that it is not necessary
to keep the clear test or password hash in memory for each command.
enumports and enumprinters now works as well. lsa* functions
have been tested. SAMR calls may or may not work (one of the core
dumps I know), but it compiles :-)
jerry
(This used to be commit d98ac8852a)
I've currently got this code disabled by default as it is
incomplete. You enable it by setting a USE_UNICODE environment
variable. Once the support is complete this check will be removed and
the CAP_UNICODE capability bit will be the sole determination of
whether the client library code uses unicode
right now I have converted session_setup and tconx. I will do more fns
over the next few days.
see clistr.c for the new client side string interface. Luckily it
tends to make the code smaller and neater while adding unicode
support.
(This used to be commit e1a04e621f)
with a PDC that has international netbios name and domain name. There's
still quite a bit of i18n stuff to fix though...
(This used to be commit 79045bd72a)
a byte range lock (write lock only, but Win2k breaks on read lock also so I
do the same) - if you think about why, this is obvious. Also fixed our client
code to do level II oplocks, if requested, and fixed the code where we would
assume the client wanted level II if it advertised itself as being level II
capable - it may not want that.
Jeremy.
(This used to be commit 213cd0b519)
* fixes some readline bugs from the merge
* first attempt at commands (spoolenum almost works)
* no changes to existing functions in HEAD; only additions
of new functions. I'll weed out what I can as I go.
--jerry
(This used to be commit 61d2aad5dc)
