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It removed all ocurrences of the following functions :
sprintf
strcpy
strcat
The replacements are slprintf, safe_strcpy and safe_strcat.
It should not be possible to use code in Samba that uses
sprintf, strcpy or strcat, only the safe_equivalents.
Once Andrew has fixed the slprintf implementation then
this code will be moved back to the 1.9.18 code stream.
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.
smbpasswd or ldap passwd, at compile-time (-DUSE_LDAP).
_none_ of the functions in ldap.c or smbpass.c should be called directly:
only those in passdb.c should be used.
-DUSE_LDAP is unlikely to compile at the moment.
Essentially, multiple session_setup_and_X's may be done
to an smbd. As there is only one global variable containing
the requested connection name (sessionsetup_user), then any
subsequent sessionsetups overwrite this name (causing %U
and %G to get the wrong name). This is particularly common
when an NT client does a null session setup to get a
browse list after the user has connected, but before
a share has been mounted.
These changes store the requested_name in the vuid structure
(so this only really works for user level and above security)
and copies this name back into the global variable before
the standard_sub call.
Jeremy.
WARNING - so far this has only been tested against a Samba PDC
(still waiting for IS to add me the machine accounts :-).
Still missing is the code in smbpasswd that will add a machine
account password and change it on the domain controller, but
this is not hard, and I will check it in soon.
Jeremy.
It is changing the global variables "myname" and "myworkgroup"
to "global_myname" and "global_myworkgroup" respectively.
This is to make it very explicit when we are messing
with a global (don't ask - it makes the domain client
code much clearer :-).
Jeremy.
password.c: Started the initial code for domain_client_validate(). All
bracketed with #ifdef DOMAIN_CLIENT for now.
reply.c: Call to domain_client_validate(). All
bracketed with #ifdef DOMAIN_CLIENT for now.
smbpass.c: New code to get/set machine passwords. Tidied up nesting
of lock calls.
Jeremy.
loadparm.c: Started add of 'security=domain' code.
password.c: Fix for security=server NT bugs.
reply.c: Started add of 'security=domain' code.
server.c: Started add of 'security=domain' code.
smb.h: Started add of 'security=domain' code.
Jeremy.
internals after Andrews' code had memset it to zero (this was causing core
dumps).
charcnv.c: Fixes for ISO8859-2 from Petr Hubeny <psh@capitol.cz>.
Jeremy.
get_smbpwd_entry (now an internal function to smbpass.c)
to a more UNIX-like :
getsmbpwnam() - get entry by name.
getsmbpwuid() - get entry by uid.
Changed the type returned by the smbpasswd enumeration
functions to be a void * so that people don't come to
depend on it being a FILE *.
These abstractions should make it much easier to
replace the smbpasswd file with a better backend
in future.
Other files changed are to match the above changes.
Jeremy.
proto.h: The unusual. ;)
reply.c: I changes some function names, and updated reply.c to match.
See mangle.c below for more.
server.c: Changed function names and parameters in file mangle.c, so
changed server.c calls to match. See mangle.c below for more.
mangle.c:
I replaced the caching mechanism used for caching reverse mangled name
maps. The old method was a large array of 256-byte strings. Movement
in the stack (including push and pop) was done by memcpy()ing whole
chunks of memory around.
The new system uses the ubi_Cache module which, in turn, uses a splay
tree. Entries are dynamically allocated using a minimum amount of
memory. Searches are non-linear, which should speed things up a bit,
too. Overall, this should save memory and be faster.
Other changes: I streamlined the is_mangled() test and made other
speed enhancements including replacing some static functions with
macros. Added comments, etc.
Note: Per an E'mail conversation with Andrew, the 'mangled stack'
parameter in smb.conf doesn't do anything anymore. The cache is
now set for 16K bytes maximum memory usage. The mangle stack
parameter is silently ignored. This can easily be changed, but
I'd rather introduce a 'mangled cache memory' parameter and
remove 'mangled stack'.
Remaining problems:
While testing the module, I noticed that something is calling
name_map_mangle() twice. The result is that names which contain
illegal characters are getting mangled twice.
Also, the entire module works by overwriting the input string.
This has a variety of nasty side effects.
Summary:
There's a lot still to be done, but the changes I have in place *should*
work in exactly the same way (except for the mangle stack parameter).
The rest of the bugs and other issues are separate.
Chris -)-----
I needed the client_name() and client_addr() functions in swat so I
could tell who was connecting from where. The problem was that these
functions didn't take a file descriptor parameter they just used
the global "Client".
So I needed to change all calls to pass a parameter ... lots of files.
"name resolve order" parameter.
source/Makefile: Re-ordered link for name resolve order code.
source/clientgen.c:
source/clientutil.c: Added calls to resolve_name().
source/includes.h: Added HPUX zombie fix.
source/loadparm.c: Added new name resolve order parameter.
source/namequery.c: Re-wrote to include parsing of lmhosts file, new resolve_name()
function requested by John.
source/nmbd.c: Tell resolve_name not to do WINS lookups if we are the WINS server.
source/nmbd_lmhosts.c: Call lmhosts parsing functions in namequery.c
source/password.c: Call resolve_name() to lookup security=server name.
source/reply.c:
source/time.c:
source/trans2.c: "fake directory create times" fix from Jim Hague - hague@research.canon.com.au.
source/util.c: Removed isalnum() test in Get_Hostname() that seems to cause
problems on many systems.
Jeremy.
all I saw" - the book of Jeremy, chapter 1 :-).
So here is the mega-merge of the NTDOM branch server code.
It doesn't include the new client side pieces, we'll look
at that later.
This should give the same functionality, server wise, as
the NTDOM branch does, only merged into the main branch.
Any fixes to domain controler functionality should be
added to the main branch, not the NTDOM branch.
This code compiles without warnings on gcc2.8, but will
need further testing before we are sure all the working
functionality of the NTDOM server branch has been
correctly carried over.
I hereby declare the server side of the NTDOM branch
dead (and all who sail in her :-).
Jeremy.
This is the checkin that fixes the infamous Visual C++ 'file
has changed' bug.
I feel *SO* good about that :-).
charset.c: Added (void) to fix Herb's fussy compiler.
loadparm.c: Removed "win95 bug compatibility" (didn't
like it much anyway :-). Added "dos filetime resolution"
instead.
reply.c: Added the 2 second timestamp resolution fix that the song above is about.
time.c: Removed unneeded get_access_time() function.
trans2.c : Removed unneeded "win95 bug compatibility" code.
Jeremy.
loadparm.c: Added "win95 bug compatibility" parameter.
local.h: Replaced MAX_OPEN_FILES back to 100 from 10 (oops).
reply.c: Fixed ulogoff check against uid - changed to vuid.
server.c: Changed file struct save of uid - changed to vuid.
smb.h: Changed id in struct current_user to vuid.
Changed file struct uid to vuid.
time.c: Added "win95 bug compatibility" atime -> mtime return.
trans2.c: Added "win95 bug compatibility" fixes.
uid.c: Changed id in struct current_user to vuid - added checks
to set/reset it.
util.c: Added code to expand environment variables.
version.h : still at 1.9.18 (head branch doesn't matter too much at present).
Jeremy.
chgpasswd.c: Fixed typo in debug message.
includes.h: Fix include for aix.
kanji.c: Added cap_to_sj as inverse of sj_to_cap.
loadparm.c:
local.h:
password.c: Added code for "networkstation user login" parameter.
- patch from Rob Nielsen <ran@adc.com>.
printing.c: Added further aix printing fixes.
reply.c: Changed access time fetch to a function.
trans2.c: Changed access time fetch to a function.
time.c: Changed access time fetch to a function.
server.c: Made NT redirector workaround final.
util.c: Added debug for write_socket failing.
Jeremy.
This gets the minimum timestamp associated with a file.
reply.c and trans2.c then return this as the create
time. Designed to fix problems with VC++ and others.
Jeremy.
reply.c: Changed reply_open_and_X to split out the oplock
request bits from core and extended and if an oplock was granted only set
the corresponding bit on reply.
server.c: Added code to dynamically allocate i/o buffers in oplock_break
(prevents recursion problems) , also made reset of sent_oplock_break
explicit.
Jeremy.
can't sent a oplock break twice on the same file.
changed some debug levels in the oplock code to level 0 so we can
track down a bug
zero the returned Files[] entry in find_free_file()
don't try to overcome client bugs in the handling of non-encrypted
passwords if in server level security mode
added paranoid null termination of password buffers
slight change to my ajt_panic() routine
with local message processing.
reply.c: Added check to reply_lockingX for chain after oplock break.
server.c: Added receive_next_smb().
trans2.c: Changed reply_trans2 to use receive_next_smb() to cope
with local message processing.
separated out smb server-mode password validation into a separate file.
added called and calling netbios names to client gen state: referenced
section in rfc1002.txt.
created workstation trust account checking code in ntclient.c
there might be a bug in reply_session_setup_andX. i indented and added { }
around single-line if statements: the lm password checking code now doesn't
look right (around the GUEST_SESSSETUP bits). *no code semantics have been
changed by the indentation process*.
added a #define around the alignment thing: it's a way to stop
NetMonitor from decoding your packets!!!!
proto.h :
usual.
reply.c :
added what i believe to be the correct error messages for getting
correct domain joining.
smb.h :
some guesses at good names of the SAMR_XXXX functions. sorting
out the SAMR_LOOKUP_RIDS function. this is *not* the same as
the LSA_LOOKUP_RIDS function, unless paul accidentally put it
on the ntlsa pipe by mistake, instead of the samr pipe :-)
rpc_pipes/lsa_hnd.c rpc_pipes/pipe_hnd.c :
moved creation and allocation of unique policy handles into this module.
rpc_pipes/pipesamr.c rpc_pipes/samrparse.c rpc_pipes/smbparse.c :
SAMR_LOOKUP_RIDS is beginning to look _suspiciously_ like the
LSA_LOOKUP_RIDS function. but i know that there are subtle
discrepancies.
Modified Files:
---------------
Makefile:
adding extra files
ipc.c :
send_trans_reply() - alignment issue. this makes the alignment
the same as that in NT. this should be looked at by people who
understand the SMB stuff better than i.
api_fd_commands[] - added samr and wkssvc pipes.
loadparm.c :
lp_domain_controller() changed to mean "samba is a domain controller".
it's a "yes/no" parameter, now. no, it isn't used _anywhere_.
namedbwork.c nameelect.c :
if "domain controller = yes" then add SV_TYPE_DOMAIN_CTRL to the
host _and_ workgroup announcements. yes, you must do both: nt does.
namelogon.c :
important NETLOGON bug in SAMLOGON request parsing, which may be
the source of some people's problems with logging on to the Samba PDC.
password.c :
get_smbpwnam() renamed to get_smbpwd_entry().
pipes.c :
added samr and wkssvc pipes.
proto.h :
usual. can we actually _remove_ proto.h from the cvs tree, and
have it as one of the Makefile dependencies, or something?
reply.c :
get_smbpwnam() renamed to get_smbpwd_entry() - also changed response
error code when logging in from a WORKSTATION$ account. yes, paul
is right: we need to know when to return the right error code, and why.
server.c :
added call to reset_chain_pnum().
#ifdef NTDOMAIN added call to init_lsa_policy_hnd() #endif. jeremy,
you'd be proud: i did a compile without NTDOMAIN, and caught a link
error for this function.
smb.h :
defines and structures for samr and wkssvc pipes.
smbpass.c :
modified get_smbpwnam() to get_smbpwd_entry() and it now takes
two arguments. one for the name; if this is null, it looks up
by smb_userid instead.
oh, by the way, smb_userids are actually domain relative ids
(RIDs). concatenate a RID with the domain SID, and you have
an internet globally unique way of identifying a user.
we're using RIDs in the wrong way....
added mod_smbpwnam() function. this was based on code in smbpasswd.c
rpc_pipes/lsaparse.c :
added enum trusted domain parsing. this is incomplete: i need
a packet trace to write it properly.
rpc_pipes/pipe_hnd.c :
added reset_chain_pnum() function.
rpc_pipes/pipenetlog.c :
get_smbpwnam() function renamed to get_smbpwd_entry().
arcfour() issues.
removed capability of get_md4pw() function to automatically add
workstation accounts. this should either be done using
smbpasswd -add MACHINE$, or by using \PIPE\samr.
rpc_pipes/pipe_util.c :
create_pol_hnd() - creates a unique LSA Policy Handle. overkill
function: uses a 64 bit sequence number; current unix time and
the smbd pid.
rpc_pipes/smbparse.c :
arcfour() issues.
smb_io_unistr2() should advance by uni_str_len not uni_max_len.
smb_io_smb_hdr_rb() - request bind uses uint16 for the context
id, and uint8 for the num_syntaxes. oops, i put these both as
uint32s.
Added Files:
------------
rpc_pipes/lsa_hnd.c :
on the samr pipe, allocate and associate an LSA Policy Handle
with a SID. you receive queries with the LSA Policy Handle,
and have to turn this back into a SID in order to answer the
query...
rpc_pipes/pipesamr.c rpc_pipes/samrparse.c
\PIPE\samr processing. samr i presume is the SAM Replication pipe.
rpc_pipes/pipewkssvc.c rpc_pipes/wksparse.c
\PIPE\wkssvc processing. the Workstation Service pipe?
holy cow.
loadparm.c : to equivalent to version 1.67
reply.c : to equivalent to version 1.69
server.c : to equivalent to version 1.122
util.c : to equivalent to version 1.98
to remove the incorrect changes.
proto.h: The usual.
rpc_pipes/smbparse.c : Backeting stuff that SHOULD NOT BE IN THE
none-NTDOMAIN build !
Jeremy.
'<' and '|' characters indicate read file and execute command respectively,
and feed the output into the parameter (!!!).
'<$' and '|$' means run standard_sub_basic() on them.
this is going to be fun to document in smb.conf.5....
also, Christian created a new "online" service parameter. services can
be taken "off-line"....
which are pipes on the IPC$ connection.
created mechanism to record pipe names in a separate pipes_struct. it
is planned to expand this, to return sensible things like interface
structures, and policy handles (RPC_IFACE and LSA_POL_HND). and the like.
1) the oplock macros in smb.h used | where they should have used
&. This means that smbd thought that all clients were always
requesting oplocks. This would have _really_ confused smbclient
and smbfs when they started receiving async oplock break requests when
they don't even know what an oplock is!
2) an oplock break request from a client can be embedded in a normal
lockingX request, and will be if the client has batched any lock
requests internally. The smbd code assumed that all oplock break
requests had num_locks==num_ulocks==0 which is not true. The only
thing special about a oplock break request with
num_locks==num_ulocks==0 is that no reply is sent. Otherwise it is
processed as a normal locking request in addition to the oplock break
processing.
These two fixes get the MS mail system in Win98 working on a Samba
1.9.18 network drive.
Andrew
adding bits for new nt domain code
byteorder.h :
trying to get macros right, and not to crash on SUNOS5...
client.c :
added #ifdef NTDOMAIN, and created do_nt_login() function. don't
want to have to recompile client.c unless absolutely necessary.
credentials.c :
moved deal_with_creds() [possibly inappropriately] into credentials.c
ipc.c reply.c server.c uid.c :
attempting to make (un)become_root() functions calleable from smbclient.
this is a little tricky: smbclient might have to be another setuid
root program, immediately setuid'ing to non-root, so that we can
reset-uid to root to get at the smbpasswd file. or, have a secure
pipe mechanism to smbd to grab smbpasswd entries. or the like.
smbdes.c smbencrypt.c :
created a function to generate lm and nt owf hashes.
lsaparse.c ntclient.c smbparse.c :
added nt client LSA_AUTH2 code. it works, too!
pipenetlog.c pipentlsa.c pipesrvsvc.c :
simplification. code-shuffling. getting that damn offset right
for the opcode in RPC_HDR.
smb.h :
changed dcinfo xxx_creds to DOM_CRED structures instead of DOM_CHAL.
we might need to store the server times as well.
proto.h :
the usual.
interface
The new code uses a source netbios name equal to the Samba servers
name, not the client name. It also uses NetWkstaUserLogon to do a full
network logon. This means it will honour the servers logon
restrictions (such as login times etc).
'dos filetimes' parameter for UTIME fix.
locking_shm.c: Fixed typo (sorry Andrew :-).
namepacket.c: Changed lp_interfaces_only() to lp_bind_interfaces_only().
proto.h: The usual.
reply.c: Made filetime calls use new file_utime call (wrapper for sys_utime).
server.c: Made filetime calls use new file_utime call (wrapper for sys_utime).
system.c: Added Andrew's sanity checks to times in sys_utime().
time.c: Moved set_filetime() to server.c. Made null_mtime()global.
trans2.c: Made filetime calls use new file_utime call (wrapper for sys_utime).
Jeremy (jallison@whistle.com)
The shares modes code is now split into separate files. The shared
memory implementation is in locking_shm.c. The slow implementation is
in locking_slow.c
It is all controlled by a struct share_ops structure that has function
pointers to the implementation of all the functions needed by a share
modes implementation. An initialisation function sets up this
structure. This will make adding new implementations easy and clean.
This also allowed me to get rid of the ugly code in smbstatus. Now
status.c links to the locking code and calls methods in share_ops.
I also renamed some things and generally organised things in a much
cleaner fashion. Defines and structures specific to each
implementation have been moved to the appropriate file and out of
smb.h.
locking.c: Adding Andrews become_root code to the main branch.
pipes.c: Fixing the close_file issue.
proto.h: The usual.
reply.c: Move smb_pass into NTDOMAIN defined code. Fixing the close_file issue.
server.c: Fixing the close_file issue.
trans2.c: Fixing the close_file issue.
uid.c: Adding Andrews become_root code to the main branch.
Jeremy (jallison@whistle.com)
whoops, the SAM Logon structure was wrong. updated this, and
cifsntdomain.txt. more debug info in pipenetlog.c. the crash
is somewhere around deal_with_credentials().
byteorder.h :
put in uint8, uint16 and uint32 typecasts around debug info, because
sign extending was resulting in ffffffe8 being displayed instead of e8.
credentials.c :
some debugging info, because i'm tracking a coredump. without gdb.
nothing like making things difficult.
reply.c :
whoops, missed this (important) bit from paul's code, which tells
the NT workstation that the MACHINE$ entry doesn't already exist,
and we're going to create a default entry with a password "machine"
right now.
proto.h:
the usual.
