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per-share. I beleive that almost all the things that this could have done on
a per-share basis can be done with other tools, like 'force user'.
Almost all the user's of this paramater used it as a global anyway...
While this is one step at a time, I hope it will allow me to considerably
simplfy the make_connection() code, particularly for the user-level security
case.
This already removes an absolute truckload of extra attempted password lookups
on the guest account.
Andrew Bartlett
In particular this commit focuses on:
Changing the Get_Pwnam code so that it can work in a const-enforced
environment.
While these changes have been mildly tested, and are pretty small, any
assistance in this is appreciated.
----
These changes allow for 'const' in 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
smbd/reply.c:
Added fix needed for appliances. When using winbindd - a new user may
exist (from winbind) but have no home directory. Extend add user script
so it is called with a %H substitution when a user exists but their home
directory does not. Thanks to Alex Win at VA Linux for finding this one
and testing the fix.
libsmb/clidgram.c: Fixed missing return statements.
smbd/uid.c: Fixed typo in debug.
Jeremy.
Currently the only backend which works is smbpasswd (tdb, LDAP, and NIS+)
are broken, but they were somewhat broken before. :)
The following functions implement the storage manipulation interface
/*The following definitions come from passdb/pdb_smbpasswd.c */
BOOL pdb_setsampwent (BOOL update);
void pdb_endsampwent (void);
SAM_ACCOUNT* pdb_getsampwent (void);
SAM_ACCOUNT* pdb_getsampwnam (char *username);
SAM_ACCOUNT* pdb_getsampwuid (uid_t uid);
SAM_ACCOUNT* pdb_getsampwrid (uint32 rid);
BOOL pdb_add_sam_account (SAM_ACCOUNT *sampass);
BOOL pdb_update_sam_account (SAM_ACCOUNT *sampass, BOOL override);
BOOL pdb_delete_sam_account (char* username);
There is also a host of pdb_set..() and pdb_get..() functions for
manipulating SAM_ACCOUNT struct members. Note that the struct
passdb_ops {} has gone away. Also notice that struct smb_passwd
(formally in smb.h) has been moved to passdb/pdb_smbpasswd.c
and is not accessed outisde of static internal functions in this
file. All local password searches should make use of the the SAM_ACCOUNT
struct and the previously mentioned functions.
I'll write some documentation for this later. The next step is to fix
the TDB passdb backend, then work on spliting the backends out into
share libraries, and finally get the LDAP backend going.
What works and may not:
o domain logons from Win9x works
o domain logons from WinNT 4 works
o user and group enumeration
as implemented by Tim works
o file and print access works
o changing password from
Win9x & NT ummm...i'll fix this tonight :)
If I broke anything else, just yell and I'll fix it. I think it
should be fairly quite.
-- jerry
falling back to the UNIX calls on error. This should fix all problems with
smbd enumerating all users in all groups in all trusted domains via winbindd.
Also changed GETDC to query 1C name rather than 1b name as only the PDC
registers 1b.
Jeremy.
Added a become_root()/unbecome_root() (push/pop security context)
around the initgroups() call to ensure it would succeed. Hmmm - I
wonder if this call being done as non-root might explain any "group access"
bugs we've had in the past....
Jeremy.
with the current user. This will allow se_access_check() to quickly do
a SD check without having to translate uid/gid's to SIDs.
Still needs work on pipe calls.
Jeremy.
get ready and fix se_access_check().
Added cannonical lookup_name(), lookup_sid(), uid_to_sid(), gid_to_sid()
functions that look via winbind first the fall back on local lookup.
All Samba should use these rather than trying to call winbindd code
directly.
Added NT_USER_TOKEN struct in user_struct, contains list of NT sids
associated with this user.
se_access_check() should use this (cached) value rather than attempting
to do the same thing itself when given a uid/gid pair.
More work needs to be done to preserve these things accross security
context changes (especially with the tricky pipe problem) but I'm
beginning to see how this will be done..... probably by registering
a new vuid for an authenticated RPC pipe and not treating the
pipe calls specially.
More thoughts needed - but we're almost there...
Jeremy.
userdom_struct. As the name implies this also contains a domain
(unused at the moment).
This will be important shortly, as operation in appliance mode needs
the domain to be always carried with the username.
pdus, and then feeds them over either a "local" function call or a "remote"
function call to an msrpc service. the "remote" msrpc daemon, on the
other side of a unix socket, then calls the same "local" function that
smbd would, if the msrpc service were being run from inside smbd.
this allows a transition from local msrpc services (inside the same smbd
process) to remote (over a unix socket).
removed reference to pipes_struct in msrpc services. all msrpc processing
functions take rpcsrv_struct which is a structure containing state info
for the msrpc functions to decode and create pdus.
created become_vuser() which does everything not related to connection_struct
that become_user() does.
removed, as best i could, connection_struct dependencies from the nt spoolss
printing code.
todo: remove dcinfo from rpcsrv_struct because this stores NETLOGON-specific
info on a per-connection basis, and if the connection dies then so does
the info, and that's a fairly serious problem.
had to put pretty much everything that is in user_struct into parse_creds.c
to feed unix user info over to the msrpc daemons. why? because it's
expensive to do unix password/group database lookups, and it's definitely
expensive to do nt user profile lookups, not to mention pretty difficult
and if you did either of these it would introduce a complication /
unnecessary interdependency. so, send uid/gid/num_groups/gid_t* +
SID+num_rids+domain_group_rids* + unix username + nt username + nt domain
+ user session key etc. this is the MINIMUM info identified so far that's
actually implemented. missing bits include the called and calling
netbios names etc. (basically, anything that can be loaded into
standard_sub() and standard_sub_basic()...)
weird unixware stuff) into _Get_Pwnam() to fix a memory allocation bug.
Note that the Get_Pwnam() function now returns a const struct passwd *
as a hint to other developers not to change entries in the struct
passwd.
capabilities to Samba so that Samba could talk to the SGI PCP
(Performance Co-Pilot) apps.
This change adds a profiling shared memory area and uses it to count
two fairly trivial things, the number of uid switches and the number
of SMB packets processes. To add more just edit include/profile.h and
then increment it at the right place.
I've also added a -P switch to smbstatus to dump the profile area.
uid_t, gid_t and vuid. Added sys_getgroups() to get
around the int * return problem. Set correct datatypes
for all uid, gid and vuid variables.
Jeremy.
Connections[] is now a local array in server.c
I might have broken something with this change. In particular the
oplock code is suspect and some .dll files aren't being oplocked when
I expected them to be. I'll look at it after I've got some sleep.
the correct directory before doing the stat. Doh !
uid.c: Fix for performance in security=share mode. Invalid vuid meant
that in security=share mode Samba was always doing the become_user/
undebome_user pairs for *every* smb. This code fixes it, but tridge
should review for security implications.
Jeremy.
timestamps from several DEBUG messages. The timestamps are redundant now
that DEBUG() provides them automatically.
There are still a few more files to do, but I've got to get home for dinner.
Chris -)-----
local.h: Kept FSTYPE_STRING as Samba for now.
nmbd_browsesync.c: Added bugfix from Matt Chapman mattyc@cyberdude.com
- lmb_browserlist is now a struct ubi_dlList not a
struct browse_cache_record *.
server.c:
smb.h:
uid.c:
password.c: Removed attrs code - it is not used anywhere.
Jeremy
everywhere. I've implemented slprintf() as a bounds checked sprintf()
using mprotect() and a non-writeable page.
This should prevent any sprintf based security holes.
