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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.
fix for the Win9x printer drivers.
Changed command names to add "command" string on the end for some consistancy
with the other scripting commands.
Added '%P' option to tdbpack/unpack to store long comment string.
Made port name be "Samba Printer Port" if no enum port script given.
Fixed prs_uint32_pre code to cope with null args.
Jeremy.
in the RPC code. This change was prompted by trying to save a long (>256)
character comment in the printer properties page.
The new system associates a TALLOC_CTX with the pipe struct, and frees
the pool on return of a complete PDU.
A global TALLOC_CTX is used for the odd buffer allocated in the BUFFERxx
code, and is freed in the main loop.
This code works with insure, and seems to be free of memory leaks and
crashes (so far) but there are probably the occasional problem with
code that uses UNISTRxx structs on the stack and expects them to contain
storage without doing a init_unistrXX().
This means that rpcclient will probably be horribly broken.
A TALLOC_CTX also needed associating with the struct cli_state also,
to make the prs_xx code there work.
The main interface change is the addition of a TALLOC_CTX to the
prs_init calls - used for dynamic allocation in the prs_XXX calls.
Now this is in place it should make dynamic allocation of all RPC
memory on unmarshall *much* easier to fix.
Jeremy.
- changed the default forms flag to 2
- all short architecture name are uppercased
- get_short_archi() is now case unsensitive
- the drivers TDB is indexed by archi/version/name
- implemented code to move drivers from the upload area to the download
area. Someone else need to look at that code.
- don't return anymore a default driver if it doesn't exist in the TDB.
Instead return an error.
- cleaned prs_unistr.
- #ifdef out jeremy's new SD parsing in printer_info_2
- removed the unused MANGLE_CODE
- #ifdef out the security checking in update_printer() as it doesn't work
for me.
Zap your ntdrivers.tdb, it won't work anymore.
J.F.
specifically wrong with this, but Samba is fooled by the client into
thinking the printer is a file share. Files copied to the share gather
dust in the spool directory and aren't printed.
This patch has the effect of not allowing printers to be mounted as file
shares. Not sure whether this is the correct solution or not.
{Jeremy,JF,Tridge} please check!
A user can now pause, resume or delete their own job even if they don't
have the Manage Documents privilege.
Added call to se_access_check() for changing printer properties. The Full
Access privilege is required for the user to perform this.
Several uninitialised variables and memory leaks plugged.
Modified default ACL created on new printers to be Everyone / Print instead
of Everyone / Full Access. This required some random stuffing around with
the value of the revision field to correspond with the ACL that NT produces
when setting the same permission on the printer.
Fixed dodgy function call in printing/printfsp.c
code. This code is now implemented as a stack of security contexts, where
a security context is defined as a set of effective user, group and
supplementary group ids.
The following functions are implemented:
BOOL push_sec_ctx(void);
Create a new security context on the stack which is the same as the
current security context.
void set_sec_ctx(uid_t uid, gid_t gid, int ngroups, gid_t *groups);
Set the current security context to a given set of user and group
ids.
void set_root_sec_ctx(void);
Set to uid = gid = 0. No supplementary groups are set.
BOOL pop_sec_ctx(void);
Pop a security context from the stack and restore the user and group
permissions of the previous context.
void init_sec_ctx(void);
Initialise the security context stack. This must be called before any
of the other operations are used or weird things may happen.
The idea is that there is a base security context which is either root or
some authenticated unix user. Other security contexts can be pushed and
popped as needed for things like changing passwords, or rpc pipe operations
where the rpc pipe user is different from the smb user.
handling in Samba. This was needed due to several limitations and
races in the previous code - as a side effect the new code is much
cleaner :)
in summary:
- changed sys_select() to avoid a signal/select race condition. It is a
rare race but once we have signals doing notification and oplocks it
is important.
- changed our main processing loop to take advantage of the new
sys_select semantics
- split the notify code into implementaion dependent and general
parts. Added the following structure that defines an implementation:
struct cnotify_fns {
void * (*register_notify)(connection_struct *conn, char *path, uint32 flags);
BOOL (*check_notify)(connection_struct *conn, uint16 vuid, char *path, uint32 flags, void *data, time_t t);
void (*remove_notify)(void *data);
};
then I wrote two implementations, one using hash/poll (like our old
code) and the other using the new Linux kernel change notify. It
should be easy to add other change notify implementations by creating
a sructure of the above type.
- fixed a bug in change notify where we were returning the wrong error
code.
- rewrote the core change notify code to be much simpler
- moved to real-time signals for leases and change notify
Amazingly, it all seems to work. I was very surprised!
smbd/notify.c. All the data structures are now private to that
module.
this is in preparation for Linux kernel support for change notify
(coming soon to a CVS tree near you)
I used a trick where CAP_LEASE isn't claimed until it is needed. This
means we avoid a system call per setreuid(), and never call capset()
unless a user tries to get a oplock on a file that they don't own
place to do this, not in smbd/passwd.c
Please don't change this without asking first, I have run this past
Andrew so talk to him (I'm on vacation next week).
I also removed the g_newXXX macros. There are essentially a private C extension,
not used anywhere else in the code, and add no functionality over malloc(XX)
and make the code harder to understand (everyone knows what malloc does).
Jeremy.
