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The intention is to remove the muliple passdb backends, but we need the
'guest' account to always be there. If the admin adds the guest account to
(say) LDAP, there will only be one backend required for operation.
This helps remove some nasty behaviours with adding accounts to the system
for both the RPC 'create user' and the SAMSYNC code. Users 'added' with
an 'add user/machine' script won't magicly appear, and machine accounts
'pre-added' to unix, but not the smbpasswd file will not cause mayhem.
This commit also implements somthing tridge discussed with me, the concept
of 'default' passdb operation pointers - so that each backend does not
need it's own stub funcitons wrapping the default tdb privilages/group
mapping code.
This also removes an implicit 'sid->name' and 'name->sid' mapping from our
own local SID space, to winbind usernames. When adding mapping for NIS/LDAP
non-sam users in future, we need to be careful.
Andrew Bartlett
(This used to be commit 6f32fa234961a525760a05418a08ec48d22d7617)
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This patch makes Samba compile cleanly with -Wwrite-strings.
- That is, all string literals are marked as 'const'. These strings are
always read only, this just marks them as such for passing to other functions.
What is most supprising is that I didn't need to change more than a few lines of code (all
in 'net', which got a small cleanup of net.h and extern variables). The rest
is just adding a lot of 'const'.
As far as I can tell, I have not added any new warnings - apart from making all
of tdbutil.c's function const (so they warn for adding that const string to
struct).
Andrew Bartlett
(This used to be commit 92a777d0eaa4fb3a1c7835816f93c6bdd456816d)
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Currently this calls back to mapping.c, but we have the framework
to get the information into LDAP and the passdb.tdb (should we? I
think so..).
This has received moderate testing with net rpc vampire and
usrmgr. I found the add_groupmem segfault in add_aliasmem as
well, but that will be another checkin.
Volker
(This used to be commit f30095852fea19421ac8e25dfe9c5cd4b2206f84)
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The actual design change is relitivly small however:
It all goes back to jerry's 'BOOL store', added to many of the elements in a
SAM_ACCOUNT. This ensured that smb.conf defaults did not get 'fixed' into
ldap. This was a great win for admins, and this patch follows in the same way.
This patch extends the concept - we don't store values back into LDAP unless
they have been changed. So if we read a value, but don't update it, or we
read a value, find it's not there and use a default, we will not update
ldap with that value. This reduced clutter in our LDAP DB, and makes it
easier to change defaults later on.
Metze's particular problem was that when we 'write back' an unchanged value,
we would clear any muliple values in that feild. Now he can still have his
mulitivalued 'uid' feild, without Samba changing it for *every* other
operation.
This also applies to many other attributes, and helps to eliminate a nasty
race condition. (Time between get and set)
This patch is big, and needs more testing, but metze has tested usrmgr, and
I've fixed some pdbedit bugs, and tested domain joins, so it isn't compleatly
flawed ;-).
The same system will be introduced into the SAM code shortly, but this fixes
bugs that people were coming across in production uses of Samba 3.0/HEAD, hence
it's inclusion here.
Andrew Bartlett
(This used to be commit 7f237bde212eb188df84a5d8adb598a93fba8155)
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only the interface has been fully moved to NTSTATUS
not all the plugins make full use of it, but have been all converted.
My testings passed completely, however a bit of more testing is welcome
Simo.
(This used to be commit 102a26e06591928a03b49cd312a65811ed46314f)
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Andrew Bartlett
(This used to be commit fd0ebf976eb6e5fc25bc75ff471c69c3f3761e32)
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patches:
Andrew Bartlett
From his e-mail:
Below I attach the following patches as a result of my work
on trusted domains support:
1) srv_samr_nt.c.diff
This fixes a bug which caused to return null string as
the first entry of enumerated accounts list (no matter what
entry, it was always null string and rid) and possibly
spoiled further names, depeding on their length.
I found that while testing my 'net rpc trustdom list'
against nt servers and samba server.
2) libsmb.diff
Now, fallback to anonymous connection works correctly.
3) smbpasswd.c.diff
Just a little fix which actually allows one to create
a trusting domain account using smbpasswd
4) typos.diff
As the name suggests, it's just a few typos fix :)
(This used to be commit 888d595fab4f6b28318b743f47378cb7ca35d479)
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(This used to be commit 290a304d2c1b70d20129236e20a0ff664179023e)
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they will get a const string and return a (t)alloced epanded one.
also modified passdb/* stuff to use this one.
(This used to be commit d378ac1e2efb0efc9a0f983d69cf678ca6255fd5)
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to using SIDs instead of RIDs.
The new funciton sid_peek_check_rid() takes an 'expected domain sid' argument.
The idea here is to prevent mistakes where the SID is implict, but isn't
the same one that we have in the struct.
Andrew Bartlett
(This used to be commit 04f9a8ff4c7982f6597c0f6748f85d66d4784901)
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passdb interface change, now the passdb modules will be asked for SID not for rid, the modules have been updated with a passthrough function that calls the old getsampwrid() functions.
srv_samr_nt.c functions that made use of the pdb_getsampwrid funcion has been updated to use the SID one.
(This used to be commit f5c6496c33fa7f5c2826540ffb4a49d8a5790fb3)
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structs.
Andrew Bartlett
(This used to be commit 57097bf1ba10566389266a4863899a7f25cdbb43)
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this is a first step only passdb stuff has beein "classized".
- so what can you do?
set debug level to: 1 poasdb:10
that will make all the code run at debug level 1 except the code in
passdb/* files that will run at level 10
TODO: fix the man page
- also smbcontrol has this nice feature so smbcontrol smbd debug 3 passdb:5
will set every smbd to have a default log level of 3 while passdb stuff
will be at level 5
and so no..
minor cosmetic fix to pdbedit is there too
(This used to be commit be5c3b3f5781ddc002ffcc98df04ab024dcef4ca)
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cleanup some of the code in net_rpc_join re const warnings and
fstrings.
Passdb:
Make the %u and %U substituions in passdb work.
This is done by declaring these paramters to be 'const' and doing
the substitution manually. I'm told this is us going full circle,
but I can't really see a better way.
Finally these things actually seem to work properly...
Make the lanman code use the pdb's recorded values for homedir etc
rather than the values from lp_*()
Add code to set the plaintext password in the passdb, where it can
decide how to store/set it. For use with a future 'ldap password
change' option, or somthing like that...
Add pdb_unix, so as to remove the 'not in passdb' special cases from the
local_lookup_*() code. Quite small, as it uses the new 'struct passwd ->
SAM_ACCOUNT' code that is now in just one place. (also used by pdb_smbpasswd)
Other:
Fix up the adding of [homes] at session setup time to actually pass
the right string, that is the unix homedir, not the UNC path.
Fix up [homes] so that for winbind users is picks the correct name.
(bad interactions with the default domain code previously)
Change the rpc_server/srv_lsa_nt.c code to match NT when for the
SATUS_NONE_MAPPED reply: This was only being triggered on
no queries, now it is on the 'no mappings' (ie all mappings failed).
Checked against Win2k.
Policy Question: Should SID -> unix_user.234/unix_group.364 be
considered a mapping or not? Currently it isn't.
Andrew Bartlett
(This used to be commit c28668068b5a3b3cf3c4317e5fb32ec9957f3e34)
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All uids and gids must create valid RIDs, becouse other code expects this, and
can't handle the failure case. (ACL code in particular)
Allow admins to adjust the base of the RID algorithm, so avoid clashes with
users brought in from NT (for example).
Put all the algorithm code back in one place, so that this change is global.
Better coping with NULL sid pointers - but it still breaks a lot of stuff.
BONUS: manpage entry for new paramater :-)
counter based rids for normal users in tdbsam is disabled for the timebeing,
idra and I will work out some things here soon I hope.
Andrew Bartlett
(This used to be commit 5275c94cdf0c64f347d4282f47088d084b1a7ea5)
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<jelmer@nl.linux.org>.
This patch also includes major rework of pdbedit to use popt, and the addition
of -i paramter (allowing the user to specify which PDBs is being
operated on) and -e to export a pdb - useful for backup and testing etc.
Use of -i and -e gets us pdb2pdb functionality for transition between backends,
much like the sam2sam in TNG.
Andrew Bartlett
(This used to be commit c10def37f506d3f2bab442418ac08fdb62659b02)
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we still need to free gid<->rid mapping and few other stuff
(This used to be commit aa4b6f8181f34196a28951264dd8b631a5deef7f)
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fixed tdbsam memory corruption (and segfault)
reducing calls to pdb_uid_to_user_rid and countrary to 0 to move to a non alghoritmic rid allocation with some passdb modules.
(This used to be commit 9836af7cd623357feaec07bc49cfb78f0aa01fc3)
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(This used to be commit 724390a8daabbecd236960562e0a50f62c6904f1)
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The main change here is to move ldap into the new pluggable passdb subsystem
and to take the LDAP location as a 'location' paramter on the 'passdb backend'
line in the smb.conf. This is an LDAP URL, parsed by OpenLDAP where supported,
and by hand where it isn't.
It also adds the ldap user suffix and ldap machine suffix smb.conf options,
so that machines added to the LDAP dir don't get mixed in with people.
Non-unix account support is also added. This means that machines don't need to
be in /etc/passwd or in nss_ldap's scope.
This code has stood up well under my production environment, so it relitivly
well tested.
I'm commiting this now becouse others have shown interest in using it, and
there is no point 'hording' the code :-).
Andrew Bartlett
(This used to be commit cd5234d7dd7309d88944b83d807c1f1c2ca0460a)
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(This used to be commit 8bb2a7446ed69020086aaedf2889795dd38ef9d4)
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Changed "SMB/Netbios" to "SMB/CIFS" in file header.
(This used to be commit 6a58c9bd06d0d7502a24bf5ce5a2faf0a146edfa)
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(This used to be commit 3db417c2ebfda0d5872dee39e36edc4fb6299b9a)
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Modules now name themselves, which should allow for sane behaviour when we get
an 'extern' passdb module (which in turn loads a .so).
Fix up tdbsam for non-unix-accounts. Not sure if this fixes idra's bug, but
its a start...
Andrew Bartlett
(This used to be commit 7d576d89d7b4a7b95e87a844568d7d7cd89f0542)
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idra has promised not to revert these this time :-)
(This used to be commit f556ad67e82518f5a024ffe9184ff9430ab5c541)
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(This used to be commit 57a145bff6b382e6dc9a9af96451175d81462c8d)
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(This used to be commit 7f7a15e09a53a03dd423d40201f037f8da049cd7)
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We are not going to reuse any getpw* call, so the extra alloc,copy and free
only uses extra memory and extra cpu time for nothing.
(This used to be commit 5c0bb0487bec00df494b72b64ddf274f42bfefea)
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(This used to be commit 59905d44e51d83f2d4a7b6844e0ae764e0b35c0c)
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Andrew Bartlett
(This used to be commit a96503475d9c1d91c2dfcdebb4f60183432d9aff)
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(This used to be commit e8a891354d307b2352eac375b9be02d7616cdb61)
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Samba now features a pluggable passdb interface, along the same lines as the
one in use in the auth subsystem. In this case, only one backend may be active
at a time by the 'normal' interface, and only one backend per passdb_context is
permitted outside that.
This pluggable interface is designed to allow any number of passdb backends to
be compiled in, with the selection at runtime. The 'passdb backend' paramater
has been created (and documented!) to support this.
As such, configure has been modfied to allow (for example) --with-ldap and the
old smbpasswd to be selected at the same time.
This patch also introduces two new backends: smbpasswd_nua and tdbsam_nua.
These two backends accept 'non unix accounts', where the user does *not* exist
in /etc/passwd. These accounts' don't have UIDs in the unix sense, but to
avoid conflicts in the algroitmic mapping of RIDs, they use the values
specified in the 'non unix account range' paramter - in the same way as the
winbind ranges are specifed.
While I was at it, I cleaned up some of the code in pdb_tdb (code copied
directly from smbpasswd and not really considered properly). Most of this was
to do with % macro expansion on stored data. It isn't easy to get the macros
into the tdb, and the first password change will 'expand' them. tdbsam needs
to use a similar system to pdb_ldap in this regard.
This patch only makes minor adjustments to pdb_nisplus and pdb_ldap, becouse I
don't have the test facilities for these. I plan to incoroprate at least
pdb_ldap into this scheme after consultation with Jerry.
Each (converted) passdb module now no longer has any 'static' variables, and
only exports 1 init function outside its .c file.
The non-unix-account support in this patch has been proven! It is now possible
to join a win2k machine to a Samba PDC without an account in /etc/passwd!
Other changes:
Minor interface adjustments:
pdb_delete_sam_account() now takes a SAM_ACCOUNT, not a char*.
pdb_update_sam_account() no longer takes the 'override' argument that was being
ignored so often (every other passdb backend). Extra checks have been added in
some places.
Minor code changes:
smbpasswd no longer attempts to initialise the passdb at startup, this is
now done on first use.
pdbedit has lost some of its 'machine account' logic, as this behaviour is now
controlled by the passdb subsystem directly.
The samr subsystem no longer calls 'local password change', but does the pdb
interactions directly. This allow the ACB_ flags specifed to be transferred
direct to the backend, without interference.
Doco:
I've updated the doco to reflect some of the changes, and removed some paramters
no longer applicable to HEAD.
(This used to be commit ff354c99c585068af6dc1ff35a1f109a806b326b)
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(This used to be commit 6b123adda901ff05b0271eeda060297448f64eec)
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Samba (ab)uses the returns from getpwnam() a lot - in particular it keeps
them around for a long time - often past the next call...
This adds a getpwnam_alloc and a getpwuid_alloc to the collection.
These function as expected, returning a malloced structure that can be
free()ed with passwd_free(&passwd).
This patch also cuts down on the number of calls to getpwnam - mostly by
taking advantage of the fact that the passdb interface is already
case-insensiteve.
With this patch most of the recursive cases have been removed (that I know
of) and the problems are reduced further by not using the sys_ interface
in the new code. This means that pointers to the cache won't be affected.
(This is a tempoary HACK, I intend to kill the password cache entirly).
The only change I'm a little worried about is the change to
rpc_server/srv_samr_nt.c for private groups. In this case we are getting
groups from the new group mapping DB. Do we still need to check for private
groups? I've toned down the check to a case sensitve match with the new code,
but we might be able to kill it entirly.
I've also added a make_modifyable_passwd() function, that copies a passwd
struct into the form that the old sys_getpw* code provided. As far as I can
tell this is only actually used in the pass_check.c crazies, where I moved
the final 'special case' for shadow passwords (out of _Get_Pwnam()).
The matching case for getpwent() is dealt with already, in lib/util_getent.c
Also included in here is a small change to register the [homes] share at vuid
creation rather than just in one varient of the session setup. (This picks
up the SPNEGO cases). The home directory is now stored on the vuid, and I
am hoping this might provide a saner way to do %H substitions.
TODO: Kill off remaining Get_Pwnam_Modify calls (they are not needed), change
the remaining sys_getpwnam() callers to use getpwnam_alloc() and move
Get_Pwnam to return an allocated struct.
Andrew Bartlett
(This used to be commit 1d86c7f94230bc53daebd4d2cd829da6292e05da)
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These strings are allocated using talloc(), either using its own memory context
stored on the SAM_ACCOUNT or one supplied by the caller.
The pdb_init_sam() and pdb_free_sam() function have been modifed so that a call
to pdb_free_sam() will either clean up (remove hashes from memory) and destroy
the TALLOC_CTX or just clean up depending on who supplied it.
The pdb_init_sam and pdb_free_sam functions now also return an NTSTATUS, and I
have modified the 3 places that actually checked these returns.
The only nasty thing about this patch is the small measure needed to maintin
interface compatability - strings set to NULL are actually set to "".
This is becouse there are too many places in Samba that do strlen() on these
strings without checking if they are NULL pointers.
A supp patch will follow to set all strings to "" in pdb_default_sam().
Andrew Bartlett
(This used to be commit 144345b41d39a6f68d01f62b7aee64ca0d328085)
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Thou shalt not reference SAM_ACCOUNT members directly - always use
pdb_get/pdb_set.
This is achived by making the whole of SAM_ACCOUNT have a .private member,
where the real members live. This caught a pile of examples, and these have
beeen fixed.
The pdb_get..() functions are 'const' (have been for some time) and this
required a few small changes to constify other functions.
I've also added some debugs to the pdb get and set, they can be removed if
requested.
I've rewritten the copy_id2x_to_sam_pass() functions to use the new passdb
interface, but I need the flags info to do it properly.
The pdb_free_sam() funciton now blanks out the LM and NT hashes, and as such
I have removed many extra 'samr_clear_sam_passwd(smbpass)' calls as a result.
Finally, any and all testing is always appriciated - but the basics seem to
work.
Andrew Bartlett
(This used to be commit d3dd28f6c443187b8d820d5a39c7c5b3be2fa95c)
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jerry, can you look at theis where we use standard_sub_advanced() fns?
I think this structure should be backported to 2.2 because we do not know if the SAM_ACCOUNT strings have enough space to contain the "substituted" string.
(Yes, just now we know they are pstrings, but we may change them into alloced one, I'm a strong suported of alloced strings as 1024 bytes are not always enough and are often too much)
(This used to be commit 29b3b5e9292805aa65e887755567abd50f74e5cb)
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(This used to be commit f796f18a83cd2fc0988612aa38c794f005efbfaf)
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Andrew Bartlett
(This used to be commit 20d7c5d9b9bc0a426897f21b3350933602abdbf1)
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cli_reg.c - indentation
pdb_ldap.c - some checks on init fns parameters
pdb_tdb.c - some checks on init fns parameters + make sure we close the db on failure
(This used to be commit 49f5cb7a3df6d673f86e6769319aa657e30d8380)
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(This used to be commit 54cbfc7ebcdf1bd2094407b689b0050f0abfa46f)
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members (such as uid and gid). This way we will be able to
keep ourselves from writing out default smb.conf settings when
the admin doesn't want to, That part is not done yet.
Tested compiles with ldap/tdb/smbpasswd. Tested connection with smbpasswd
backend.
oh...and smbpasswd doesn'y automatically expire accounts after 21 days
from the last password change either now. Just ifdef'd out that code
in build_sam_account().
Will merge updates into 2.2 as they are necessary.
jerry
(This used to be commit f0d43791157d8f04a13a07d029f203ad4384d317)
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- removed the ugly as hell sam_logon_in_ssb variable, I changed a bit the
definition of standard_sub_basic() to cope with that.
- removed the smb.conf: 'domain admin group' and 'domain guest group'
parameters ! We're not playing anymore with the user's group RIDs !
- in get_domain_user_groups(), if the user's gid is a group, put it first
in the group RID list.
I just have to write an HOWTO now ;-)
J.F.
(This used to be commit fef52c4b96c987115fb1818c00c2352c67790e50)
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(This used to be commit 6dda341bc80dc7c4d044df134fc153f646a6a4e9)
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- Now perfectly valid.
(This used to be commit be04aad90da341fb1b4ef472f2279aefab972258)
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Zero out some of the plaintext passwords for paranoia
Fix up some of the other passdb backends with the change to *uid_t rather than
uid_t.
Make some of the code in srv_netlog_nt.c clearer, is passing an array around,
so pass its lenght in is definition, not as a seperate paramater.
Use sizeof() rather than magic numbers, it makes things easier to read.
Cope with a PAM authenticated user who is not in /etc/passwd - currently by
saying NO_SUCH_USER, but this can change in future.
Andrew Bartlett
(This used to be commit 514c91b16baca639bb04638042bf9894d881172a)
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In particular this commit focuses on:
Actually adding the 'const' to the passdb interface, and the flow-on changes.
Also kill off the 'disp_info' stuff, as its no longer used.
While these changes have been mildly tested, and are pretty small, any
assistance in this is appreciated.
----
These changes introduces a large dose of 'const' to the Samba tree.
There are a number of good reasons to do this:
- I want to allow the SAM_ACCOUNT structure to move from wasteful
pstrings and fstrings to allocated strings. We can't do that if
people are modifying these outputs, as they may well make
assumptions about getting pstrings and fstrings
- I want --with-pam_smbpass to compile with a slightly sane
volume of warnings, currently its pretty bad, even in 2.2
where is compiles at all.
- Tridge assures me that he no longer opposes 'const religion'
based on the ability to #define const the problem away.
- Changed Get_Pwnam(x,y) into two variants (so that the const
parameter can work correctly): - Get_Pwnam(const x) and
Get_Pwnam_Modify(x).
- Reworked smbd/chgpasswd.c to work with these mods, passing
around a 'struct passwd' rather than the modified username
---
This finishes this line of commits off, your tree should now compile again :-)
Andrew Bartlett
(This used to be commit c95f5aeb9327347674589ae313b75bee3bf8e317)
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In particular this commit focuses on:
The guts of the moving about inside passdb.
While these changes have been mildly tested, and are pretty small, any
assistance in this is appreciated.
----
These changes allow for the introduction of a large dose of 'const' to
the Samba tree.
There are a number of good reasons to do this:
- I want to allow the SAM_ACCOUNT structure to move from wasteful
pstrings and fstrings to allocated strings. We can't do that if
people are modifying these outputs, as they may well make
assumptions about getting pstrings and fstrings
- I want --with-pam_smbpass to compile with a slightly sane
volume of warnings, currently its pretty bad, even in 2.2
where is compiles at all.
- Tridge assures me that he no longer opposes 'const religion'
based on the ability to #define const the problem away.
- Changed Get_Pwnam(x,y) into two variants (so that the const
parameter can work correctly): - Get_Pwnam(const x) and
Get_Pwnam_Modify(x).
- Reworked smbd/chgpasswd.c to work with these mods, passing
around a 'struct passwd' rather than the modified username
passdb/
- Kill off disp_info stuff, it isn't used any more - Kill off
support for writing to the old smbpasswd format, it isn't relevent
to Samba 3.0
- Move around and modify the pdb_...() helper functions, adding
one that sets the last changed time to 'now' and that sets the
must change time appropriately.
- Remove the ugly forced update of the LCT- value in
pdb_smbpasswd. - Remove the implicit modification of the ACB
flags when both NT and LM passwords are set.
- Removed substation in pdb_getsampwnam output, as a single
password change will render them inoperable in any case (they
will be substituted and stored)
- Added a default RID to the init_sam_from_pw() function, based on
our rid algorithm.
- Added checks that an smbpasswd stored user has a uid-based RID.
- Fail to store tdb based users without a RID
lib/
- Change the substituion code to use global_myname if there is
no connection (and therefore no called name) at the present time.
(This used to be commit 8f607810eb24ed1157bbd2e896c2c167bc34d986)
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- move the arbitrary 21 day timeout to local.h
(This used to be commit 11075f543470c3283accce0246d0b2983420695a)
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Of particular note is the change to pdb_free_sam() to take its sam argument by
reference, allowing it to be NULLified by the SAFE_FREE() macro, and the
changed to local_password_change() both to make it work and to remove the
duplicate code that caused so much breakage over the last few days.
- Small change in behaviour: when LOCAL_ADD_USER is set, the user doesn't
actually exist locally but does exist in the passdb we don't attempt to do a
GetPwnam(). (How the entry got there is another matter, and most passdbs won't
allow this anyway).
Andrew Bartlett
(This used to be commit 6b45e342fd1ed82d7f5bd613048fe862a6a6f2a1)
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