Problem with SAMR pipe (ChangePassword() Python binding)

[Nadezhda Ivanova]

Hi all,
I played a bit with libnet_ChangePassword and here is what I get:
The error message that happens to Zahari below does not appear if you sue a sudoer, so it's a basic permissions issue. However, I get a crash, bith when using Zahari's python binding and when I use "net password set" or "net password change"

[root at dev bin]# ./net password change Administrator
Password for [RUMBA\root]:
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
INTERNAL ERROR: Signal 6 in pid 28516 (4.0.0alpha9-GIT-6f69f16)
Please read the file BUGS.txt in the distribution
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
PANIC: internal error
BACKTRACE: 49 stack frames:
 #0 ./net(call_backtrace+0x2b) [0x865a3ff]
 #1 ./net(smb_panic+0x296) [0x865a781]
 #2 ./net [0x865a94c]
 #3 ./net(fault_setup+0) [0x865a981]
 #4 [0x52f400]
 #5 /lib/libc.so.6(abort+0x188) [0x828028]
 #6 ./net [0x86716be]
 #7 ./net [0x8671718]
 #8 ./net [0x8671817]
 #9 ./net(talloc_get_name+0x1d) [0x867292b]
 #10 ./net(talloc_check_name+0x34) [0x86729af]
 #11 ./net [0x8115297]
 #12 ./net(composite_error+0xc1) [0x82149d6]
 #13 ./net(composite_is_ok+0x37) [0x8214a57]
 #14 ./net [0x814e237]
 #15 ./net [0x814e279]
 #16 ./net(smbcli_transport_dead+0x15c) [0x815705a]
 #17 ./net [0x8156bb4]
 #18 ./net [0x86724d1]
 #19 ./net [0x8672652]
 #20 ./net [0x8672652]
 #21 ./net [0x8672652]
 #22 ./net [0x8672652]
 #23 ./net [0x8672652]
 #24 ./net(_talloc_free+0xbe) [0x8672de9]
 #25 ./net(dcerpc_pipe_connect_b_recv+0x89) [0x8116b6a]
 #26 ./net [0x80c08c6]
 #27 ./net(composite_error+0xc1) [0x82149d6]
 #28 ./net [0x8116800]
 #29 ./net(tevent_common_loop_timer_delay+0x195) [0x86478ad]
 #30 ./net [0x8649d97]
 #31 ./net [0x864a549]
 #32 ./net(_tevent_loop_once+0xdf) [0x86469ff]
 #33 ./net(composite_wait+0x44) [0x821484e]
 #34 ./net [0x80c0f87]
 #35 ./net(libnet_RpcConnect_recv+0x88) [0x80c22fa]
 #36 ./net(libnet_RpcConnect+0x5e) [0x80c23ba]
 #37 ./net [0x80be820]
 #38 ./net(libnet_ChangePassword+0x76) [0x80bf007]
 #39 ./net [0x80bef75]
 #40 ./net(libnet_ChangePassword+0x51) [0x80befe2]
 #41 ./net [0x80bc8d8]
 #42 ./net(net_run_function+0xc5) [0x80bbfb9]
 #43 ./net(net_password+0x3f) [0x80bcc8e]
 #44 ./net(net_run_function+0xc5) [0x80bbfb9]
 #45 ./net [0x80bc4a4]
 #46 ./net(main+0x22) [0x80bc55a]
 #47 /lib/libc.so.6(__libc_start_main+0xe6) [0x8125d6]
 #48 ./net [0x80bbe61]
Aborted

Any ideas what might be the cause of this? 

Regards,
Nadezhda Ivanova 

> -----Original Message-----
> From: samba-technical-bounces at lists.samba.org [mailto:samba-technical-
> bounces at lists.samba.org] On Behalf Of Zahari Zahariev
> Sent: Wednesday, August 12, 2009 5:16 PM
> To: samba-technical at lists.samba.org
> Cc: Andrew Bartlett
> Subject: Problem with SAMR pipe (ChangePassword() Python binding)
> 
> Hello Samba4,
> 
> I am preparing a Python binding for the samr_ChangePassword() function.
> It took quite a while (usual reasons no know-how), but finally Andrew
> helped me out by taking a 'magic look' and refactoring py_net_join() in
> samba4/libbet/py_net.c.
> 
> I copied the same approach to passing credentials along but then I
> bumped across another error:
> 
> python lib/ldb/tests/python/samr-test.py <Windows_2003_AD_IP>
> -UAdministrator%old123@
> test: test_samr (__main__.SamrTests)
> baseDN: DC=zahari,DC=tk
> ['ChangePassword', 'Join', '__doc__', '__file__', '__name__']
> Unable to setup messaging listener for
> '/usr/local/samba/private/smbd.tmp/messaging/msg.0.193676647.0':NT_STATUS_
> OBJECT_NAME_NOT_FOUND
> error: test_samr (__main__.SamrTests) [
> Traceback (most recent call last):
>   File "lib/ldb/tests/python/samr-test.py", line 79, in test_samr
>     newpassword="samba123@", level=1, credentials=creds)
> RuntimeError: Connection to SAMR pipe of PDC of domain 'ZAHARI' failed:
> NT_STATUS_INVALID_PARAMETER
> ]
> 
> I am providing the patch that contains my current progress.
> 
> Regards,
> 
>     --Zahari
>