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realloc can return NULL in one of two cases - (1) the realloc failed,
(2) realloc succeeded but the new size requested was zero, in which
case this is identical to a free() call.
The error paths dealing with these two cases should be different,
but mostly weren't. Secondly the standard idiom for dealing with
realloc when you know the new size is non-zero is the following :
tmp = realloc(p, size);
if (!tmp) {
SAFE_FREE(p);
return error;
} else {
p = tmp;
}
However, there were *many* *many* places in Samba where we were
using the old (broken) idiom of :
p = realloc(p, size)
if (!p) {
return error;
}
which will leak the memory pointed to by p on realloc fail.
This commit (hopefully) fixes all these cases by moving to
a standard idiom of :
p = SMB_REALLOC(p, size)
if (!p) {
return error;
}
Where if the realloc returns null due to the realloc failing
or size == 0 we *guarentee* that the storage pointed to by p
has been freed. This allows me to remove a lot of code that
was dealing with the standard (more verbose) method that required
a tmp pointer. This is almost always what you want. When a
realloc fails you never usually want the old memory, you
want to free it and get into your error processing asap.
For the 11 remaining cases where we really do need to keep the
old pointer I have invented the new macro SMB_REALLOC_KEEP_OLD_ON_ERROR,
which can be used as follows :
tmp = SMB_REALLOC_KEEP_OLD_ON_ERROR(p, size);
if (!tmp) {
SAFE_FREE(p);
return error;
} else {
p = tmp;
}
SMB_REALLOC_KEEP_OLD_ON_ERROR guarentees never to free the
pointer p, even on size == 0 or realloc fail. All this is
done by a hidden extra argument to Realloc(), BOOL free_old_on_error
which is set appropriately by the SMB_REALLOC and SMB_REALLOC_KEEP_OLD_ON_ERROR
macros (and their array counterparts).
It remains to be seen what this will do to our Coverity bug count :-).
Jeremy.
(This used to be commit 1d710d06a214f3f1740e80e0bffd6aab44aac2b0)
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overrun. Spoke to Jerry about the correct fix. Will add
this after.
Jeremy.
(This used to be commit 33e13aabd3825c59d15dc897536e2ccf8c8f6d5e)
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PAC_LOGON_NAME structure. This was broken on big-endian machines
(Solaris SPARC and ppc). Fixes Bug #3330.
Jerry, this should be in 3.0.21c.
Guenther
(This used to be commit 9732490811f8f02ee547ddc6e2694e1122a3a518)
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Sync with trunk as off r13315
(This used to be commit 17e63ac4ed8325c0d44fe62b2442449f3298559f)
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box with gcc4 and -O6...
Fix a bunch of C99 dereferencing type-punned pointer will break
strict-aliasing rules errors. Also added prs_int32 (not uint32...)
as it's needed in one place. Find places where prs_uint32 was being
used to marshall/unmarshall a time_t (a big no no on 64-bits).
More warning fixes to come.
Thanks to Volker for nudging me to compile like this.
Jeremy.
(This used to be commit c65b752604f8f58abc4e7ae8514dc2c7f086271c)
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Jeremy.
(This used to be commit d202aae3c821f3d78ff063d867bac1f84dca3548)
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x86_64 box.
Jeremy.
(This used to be commit d720867a788c735e56d53d63265255830ec21208)
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bytes.
(This used to be commit 4576e6843b67c5919823307a196b1582b78fdeaf)
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* \PIPE\unixinfo
* winbindd's {group,alias}membership new functions
* winbindd's lookupsids() functionality
* swat (trunk changes to be reverted as per discussion with Deryck)
(This used to be commit 939c3cb5d78e3a2236209b296aa8aba8bdce32d3)
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Jeremy.
(This used to be commit e68872d1473ea0557fac1072055a6ed21e5b3d82)
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(This used to be commit a0ac9a8ffd4af31a0ebc423b4acbb2f043d865b8)
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Volker to commit. Woo Hoo !
Jeremy.
(This used to be commit 316df944a456f150944761dab34add5e8c4ab699)
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pulling back all recent rpc changes from trunk into
3.0. I've tested a compile and so don't think I've missed
any files. But if so, just mail me and I'll clean backup
in a couple of hours.
Changes include \winreg, \eventlog, \svcctl, and
general parse_misc.c updates.
I am planning on bracketing the event code with an
#ifdef ENABLE_EVENTLOG until I finish merging Marcin's
changes (very soon).
(This used to be commit 4e0ac63c36527cd8c52ef720cae17e84f67e7221)
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segvs
(This used to be commit 25121547caaaed0d60f4db7458570c14e7d21b2a)
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change than I'd hoped for due to formating changes to tidy up code.
Jeremy.
(This used to be commit a348f9221a9fe719dc6f0db6eb295575c2f95e1e)
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allocation
functions so we can funnel through some well known functions. Should help greatly with
malloc checking.
HEAD patch to follow.
Jeremy.
(This used to be commit 620f2e608f70ba92f032720c031283d295c5c06a)
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On systems with /dev/urandom, this avoids a change to secrets.tdb for every fork().
For other systems, we now only re-seed after a fork, and on startup.
No need to do it per-operation. This removes the 'need_reseed'
parameter from generate_random_buffer().
Andrew Bartlett
(This used to be commit 36741d3cf53a7bd17d361251f2bb50851cdb035f)
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test case
was 'rpcclient -c "enumprinters 2"' with 4000 printers. At some point this
completely exploded in memory usage. For every string we talloc'ed memory up
to the end of the buffer. -> O(n^2).
This survives valgrind with this number of printers. It might also have
influence on winbind with a large number of users.
All those who dare to look at samba3 rpc code, could you please take a look? I
know this is a burden, but I would like comments ;-)))
Volker
(This used to be commit af251f4ea63c584604972e1c8add83e65046de80)
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in prs_init now
testsuite/printing/psec.c cannot do a prs_mem_free() when tdb_prs_fetch fails
as the prs structure has not been initialized
(This used to be commit a363e5d8c549861329506bd87c11d82ace5520e5)
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(This used to be commit ebabf72a78f0165521268b73e0fcabe1ea7834fd)
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(This used to be commit 68945027b5dc6b5e1aee13e4df4d11a34e42a3a9)
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clientspreviously joined to the Samba domain
(This used to be commit 3802f5895ee18507c6f467bd11db0b1147a6fdfd)
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(This used to be commit 398bd14fc6e2f8ab2f34211270e179b8928a6669)
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(This used to be commit 024d32f79390210bee6da8e75c228a4aaa7fe6b0)
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time. )-:
(This used to be commit 59dae1da66a5eb7e128263bd578f167d8746e9f0)
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(This used to be commit ba4d334b822248d8ab929c9568533431603d967e)
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the schannel code, but I've included that anyway. :-)
This patch revives the client-side NTLMSSP support for RPC named pipes
in Samba, and cleans up the client and server schannel code. The use of the
new code is enabled by the 'sign', 'seal' and 'schannel' commands in
rpcclient.
The aim was to prove that our separate NTLMSSP client library actually
implements NTLMSSP signing and sealing as per Microsoft's NTLMv1 implementation,
in the hope that knowing this will assist us in correctly implementing
NTLMSSP signing for SMB packets. (Still not yet functional)
This patch replaces the NTLMSSP implementation in rpc_client/cli_pipe.c with
calls to libsmb/ntlmssp.c. In the process, we have gained the ability to
use the more secure NT password, and the ability to sign-only, instead of
having to seal the pipe connection. (Previously we were limited to sealing,
and could only use the LM-password derived key).
Our new client-side NTLMSSP code also needed alteration to cope with our
comparatively simple server-side implementation. A future step is to replace
it with calls to the same NTLMSSP library.
Also included in this patch is the schannel 'sign only' patch I submitted to
the team earlier. While not enabled (and not functional, at this stage) the
work in this patch makes the code paths *much* easier to follow. I have also
included similar hooks in rpccleint to allow the use of schannel on *any* pipe.
rpcclient now defaults to not using schannel (or any other extra per-pipe
authenticiation) for any connection. The 'schannel' command enables schannel
for all pipes until disabled.
This code is also much more secure than the previous code, as changes to our
cli_pipe routines ensure that the authentication footer cannot be removed
by an attacker, and more error states are correctly handled.
(The same needs to be done to our server)
Andrew Bartlett
(This used to be commit 5472ddc9eaf4e79c5b2e1c8ee8c7f190dc285f19)
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back a different sized blob of encrypted password data then we were
expecting. There's an extra 32 bytes of unknown stuff.
(This used to be commit 285952fd626b02362fb6732f90c5a3ce0d2d5ae0)
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It can itself determine the length of the string it has to
transfer. Andrew B., could you take a look at the length calculation?
Is that safe?
Thanks,
Volker
(This used to be commit 0ef69b586a8f1fa11a41a3900180ea2090b60bfd)
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multi-PDU encode/decode with SCHANNEL. Also need to test against WNT DC.
Jeremy.
(This used to be commit ff66d4097088409205b6bad5124a78ef9946010d)
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schannel clients.
Volker
(This used to be commit 0f348a35d09ff020837119157ef7f4b9e6f07643)
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signed/unsigned (mostly i counters)
a little bit of const.
Andrew Bartlett
(This used to be commit 50f0ca752e5058c4051f42a9337361373ba1f727)
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Needed to move to disk based i/o later.
Jeremy.
(This used to be commit a823fee5b41a5b6cd4ef05aa1f85f7725bd272a5)
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(This used to be commit 7a4c87484237308cb3ad0d671687da7e0f6e733b)
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warnings. (Adds a lot of const).
Andrew Bartlett
(This used to be commit 3a7458f9472432ef12c43008414925fd1ce8ea0c)
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Found via a post from Arcady Chernyak <Arcady.Chernyak@efi.com>.
Jeremy.
(This used to be commit 5d5762d1787db4392d2dff16024097c638b2d494)
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(This used to be commit 65e7b5273bb58802bf0c389b77f7fcae0a1f6139)
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(This used to be commit 3928578b52cfc949be5e0ef444fce1558d75f290)
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(This used to be commit 03ac082dcb375b6f3ca3d810a6a6367542bc23ce)
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(This used to be commit ddb5753e36b8c5efb48ce5c82c16d970fb8e76b6)
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(This used to be commit 1f007d3ed41c1b71a89fa6be7d173e67e927c302)
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Changed "SMB/Netbios" to "SMB/CIFS" in file header.
(This used to be commit 6a58c9bd06d0d7502a24bf5ce5a2faf0a146edfa)
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we're not returning what the client gave us.
Jeremy.
(This used to be commit 9a969069f132019cdd8a11be2b00356a3f09b64d)
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Jeremy.
(This used to be commit 6deb4caca5b45f87be84032fe0588db8d73b901a)
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buffer up to the current position, and use this to dump pipe buffers
just before parsing.
(This used to be commit 92a3ab274e6cf09a8ba39b91f8bbacba6de40b37)
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discovered that our reply is short by 4 bytes since day 1 of this code.
Added a decode function to rpcclient too.
splitted the STRING2 fields filling while trying to understand the win9x
userlist bug. (didn't fix the bug, but the reply looks closer to NT).
J.F.
(This used to be commit bfbe7f377e5fcb09e87bfc866196dfc51a8fe64d)
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(This used to be commit 5c892badbcad43b8a2e002d1a42483c402f2d3e9)
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(This used to be commit 2d0922b0eabfdc0aaf1d0797482fef47ed7fde8e)
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(This used to be commit 94b0fde8a8a4e888cee93ebde79390c7942a2785)
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(This used to be commit 3245714243d15160b9e0e27c413fef65ea91f455)
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