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This is a small start on (ie, the only trivial part of) the work shown in:
http://k5wiki.kerberos.org/wiki/Projects/Samba4_Port#Samba.27s_use_of_Heimdal_symbols.2C_with_MIT_differences
(a table of all Kerberos symbols used in Samba4, and notes on where
they differ from those provided with MIT Kerberos)
Andrew Bartlett
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This library intercepts seteuid and related calls, and simulates them
in a manner similar to the nss_wrapper and socket_wrapper
libraries. This allows us to enable the vfs_unixuid NTVFS module in
the build farm, which means we are more likely to catch errors in the
token manipulation.
The simulation is not complete, but it is enough for Samba4 for
now. The major areas of incompleteness are:
- no emulation of setreuid, setresuid or saved uids. These would be
needed for use in Samba3
- no emulation of ruid changing. That would also be needed for Samba3
- no attempt to emulate file ownership changing, so code that (for
example) tests whether st.st_uid matches geteuid() needs special
handling
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"groupSID"s structure
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authsam_expand_nested_groups()
metze
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This patch adds a function "authsam_expand_nested_groups" (calculation of rights
through expanding groups of a certain SID) which basically collects all
memberships through "memberOf" attributes. It works with either user or group SIDs.
For avoiding loops it tests on each call if the SID hasn't been added yet (through
the helper function "sids_contains_sid").
The function itself is called by "authsam_make_server_info".
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This fixes the ntvfs.cifs tests.
metze
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This extends the PKINIT code in Heimdal to ask the HDB layer if the
User Principal Name name in the certificate is an alias (perhaps just
by case change) of the name given in the AS-REQ. (This was a TODO in
the Heimdal KDC)
The testsuite is extended to test this behaviour, and the other PKINIT
certficate (using the standard method to specify a principal name in a
certificate) is updated to use a Administrator (not administrator).
(This fixes the kinit test).
Andrew Bartlett
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It is much easier to do decryption with wireshark when the keytab is
available for every host in the domain. Running 'net export keytab
<keytab name>' will export the current (as pointed to by the supplied
smb.conf) local Samba4 doamin.
(This uses Heimdal's 'hdb' keytab and then the existing hdb-samba4,
and so has a good chance of keeping working in the long term).
Andrew Bartlett
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This reverts commit a40ce5d0d9d06f592a8885162bbaf644006b9f0f.
This breaks the build...
Andrew, please repush it, when it's fixed:-)
metze
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It is much easier to do decryption with wireshark when the keytab is
available for every host in the domain. Running 'net export keytab
<keytab name>' will export the current (as pointed to by the supplied
smb.conf) local Samba4 doamin.
(This uses Heimdal's 'hdb' keytab and then the existing hdb-samba4,
and so has a good chance of keeping working in the long term).
Andrew Bartlett
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metze
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to the peer
We should even do this if the submech has no more data to send.
metze
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Each attribute we request from LDB comes with a small cost, so don't
lookup any more than we must for the (very) frequent krbtgt lookup
case. Similarly, we don't need to build a PAC for a server (as a
target), so don't ask for the PAC attributes here either.
Andrew Bartlett
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When emulating Samba3 (which we do to ensure we don't break
compatability), don't do mutual authentication by default, as it
breaks the session key with AES and isn't what Samba3 does anyway.
Andrew Bartlett
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This allows the older 'like Samba3' GENSEC krb5 implementation to work
against Windows 2008. I'm using this to track down interop issues in
this area.
Andrew Bartlett
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s4:auth/ntlmssp: let _unwrap fallback to seal if sign only doesn't work
Windows always uses SEAL with NTLMSSP on LDAP connection even if not negotiated.
metze
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The session keys as supplied already have a reference on them, so
stealing them creates challenges. For 16 bytes, it is just easier to
be consistant and copy them.
Andrew Bartlett
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The previous use of talloc_steal could cause a steal of a pointer that
had references. This ensures that doesn't happen
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This reworks the notes file to be less stream-of-consciousness and more
task for porting, with a very particular focus on a potential port of
Samba4 to use MIT Kerberos.
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
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Thanks to gd for the catch.
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I tried hard to not change the program logic. Should fix bug #6439.
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This requires a rework on Heimdal's windc plugin layer, as we want
full control over what tickets Heimdal will issue. (In particular, in
case our requirements become more complex in future).
The original problem was that Heimdal's check would permit the ticket,
but Samba would then deny it, not knowing it was for kadmin/changepw
Also (in hdb-samba4) be a bit more careful on what entries we will
make the 'change_pw' service mark that this depends on.
Andrew Bartlett
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904d0124b46eed7a8ad6e5b73e892ff34b6865ba)
Also including the supporting changes required to pass make test
A number of heimdal functions and constants have changed since we last
imported a tree (for the better, but inconvenient for us).
Andrew Bartlett
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Compiled with Andrew over a series of phone calls and gobby sessions,
with the aim of documenting Kerberos requirements for Samba to us an
alternate (ie, MIT) Kerberos library.
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
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Compiled with Andrew over a series of phone calls and gobby sessions
with Andrew, with the aim of documenting Kerberos requirements for
Samba to us an alternate (ie, MIT) Kerberos library.
Signed-off-by: Andrew Bartlett <abartlet@samba.org>
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Logs showed that every SAM authentication was causing a non-indexed
ldb search for member=XXX. This was previously indexed in Samba4, but
since we switched to using the indexes from the full AD schema it now
isn't.
The fix is to use the extended DN operations to allow us to ask the
server for the memberOf attribute instead, with with the SIDs attached
to the result. This also means one less search on every
authentication.
The patch is made more complex by the fact that some common routines
use the result of these user searches, so we had to update all
searches that uses user_attrs and those common routines to make sure
they all returned a ldb_message with a memberOf filled in and the SIDs
attached.
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than linking against the python module.
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fixed up from previous patch that removed the use of crossref records
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A single AD server can only host a single domain, so don't stuff about
with looking up our crossRef record in the cn=Partitions container.
We instead trust that lp_realm() and lp_workgroup() works correctly.
Andrew Bartlett
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This bit actually means that we should ignore the minimum password
length field for this user. It doesn't mean that the password should
be seen as empty
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In particular, this is the rename from creds_ to netlogon_creds_, as
well as other links to use the new common crypto.
Andrew Bartlett
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This is the server side state for netlogon credential chaining
Andrew Bartlett
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For example, some of the new shared functionality was previously in the wkssvc
torture test.
Andrew Bartlett
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