RE: [squid-users] winbind directories permissions issue

>
>>> ...
>>> Amos
>>>
>>> I made some cut from our previous posts to avoid any confusion.
>>>
>>>>
>>>> Sorry I haven't had much to do with winbind than we have already
tried.
>>>> you are the first I've seen where these fixes have not worked.
>>>>
>>>> Can you get a full "ls -la" trace of the directory content and
>>> permissions
>>>> at a time where it's working, and one where its not? Also a list of
the
>>>> squid user name and the groups names it belongs to.
>>>>
>>>
>>> $ egrep 'squid|winbin' /etc/passwd /etc/group
>>> /etc/passwd:squid:x:1560:1560:SQUID user:/home/SQUID:/bin/ksh
>>> /etc/group:squidg::1560:
>>> /etc/group:winbind::2222:squid
>>>
>>> Below what happended on one of my machine .. sbepskdd.
>>>
>>> some minutes before the bug occured ..
>>>
>>> $ ls -nai /var/lib/samba
>>> total 121612
>>> 162445 drwxr-x--- 5 0 2222 512 Dec 15 04:14 .
>>> 330886 drwxr-xr-x 5 0 0 512 Nov 17 19:39 ..
>>> 162448 -rw-r----- 1 0 2222 8192 Dec 15 04:14
>>> gencache.tdb
>>> 162450 -rw-r----- 1 0 2222 696 Nov 17 19:39
>>> idmap_cache.tdb
>>> 168469 drwxr-x--- 4 0 2222 512 Nov 17 19:39
locks
>>> 162451 -rw-r----- 1 0 2222 8192 Dec 14 22:06
>>> messages.tdb
>>> 162454 -rw-r----- 1 0 2222 62144512 Dec 15 08:41
>>> netsamlogon_cache.tdb
>>> 54155 drwxr-x--- 2 0 2222 512 Dec 15 04:14
>>> smb_krb5
>>> 162453 -rw------- 1 0 0 57344 Nov 25 06:49
>>> winbindd_cache.tdb
>>> 451222 drwxr-x--- 2 0 2222 512 Nov 25 06:47
>>> winbindd_privileged
>>>
>>> $ ls -nai /var/lib/samba/winbindd_privileged
>>> total 4
>>> 451222 drwxr-x--- 2 0 2222 512 Nov 25 06:47 .
>>> 162445 drwxr-x--- 5 0 2222 512 Dec 15 04:14 ..
>>> 451223 srwxrwxrwx 1 0 0 0 Nov 25 06:47
pipe
>>>
>>> when SQUID is still running but the bug is happening ..
>>>
>>> $ ls -nai /var/lib/samba
>>> total 122140
>>> 162445 drwxr-x--- 5 0 2222 512 Dec 15 04:14 .
>>> 330886 drwxr-xr-x 5 0 0 512 Nov 17 19:39 ..
>>> 162448 -rw-r----- 1 0 2222 8192 Dec 15 04:14
>>> gencache.tdb
>>> 162450 -rw-r----- 1 0 2222 696 Nov 17 19:39
>>> idmap_cache.tdb
>>> 168469 drwxr-x--- 4 0 2222 512 Nov 17 19:39
locks
>>> 162451 -rw-r----- 1 0 2222 8192 Dec 14 22:06
>>> messages.tdb
>>> 162454 -rw-r----- 1 0 2222 62414848 Dec 15 10:04
>>> netsamlogon_cache.tdb
>>> 54155 drwxr-x--- 2 0 2222 512 Dec 15 04:14
>>> smb_krb5
>>> 162453 -rw------- 1 0 0 57344 Nov 25 06:49
>>> winbindd_cache.tdb
>>> 451222 drwxr-x--- 2 0 2222 512 Nov 25 06:47
>>> winbindd_privileged
>>>
>>> $ ls -nai /var/lib/samba/winbindd_privileged
>>> total 4
>>> 451222 drwxr-x--- 2 0 2222 512 Nov 25 06:47 .
>>> 162445 drwxr-x--- 5 0 2222 512 Dec 15 04:14 ..
>>> 451223 srwxrwxrwx 1 0 0 0 Nov 25 06:47
pipe
>>>
>>> just after restart of SQUID process ..
>>>
>>> $ ls -nai /var/lib/samba
>>> total 122140
>>> 162445 drwxr-x--- 5 0 2222 512 Dec 15 04:14 .
>>> 330886 drwxr-xr-x 5 0 0 512 Nov 17 19:39 ..
>>> 162448 -rw-r----- 1 0 2222 8192 Dec 15 04:14
>>> gencache.tdb
>>> 162450 -rw-r----- 1 0 2222 696 Nov 17 19:39
>>> idmap_cache.tdb
>>> 168469 drwxr-x--- 4 0 2222 512 Nov 17 19:39
locks
>>> 162451 -rw-r----- 1 0 2222 8192 Dec 14 22:06
>>> messages.tdb
>>> 162454 -rw-r----- 1 0 2222 62414848 Dec 15 10:04
>>> netsamlogon_cache.tdb
>>> 54155 drwxr-x--- 2 0 2222 512 Dec 15 04:14
>>> smb_krb5
>>> 162453 -rw------- 1 0 0 57344 Nov 25 06:49
>>> winbindd_cache.tdb
>>> 451222 drwxr-x--- 2 0 2222 512 Nov 25 06:47
>>> winbindd_privileged
>>>
>>> $ ls -nai /var/lib/samba/winbindd_privileged
>>> total 4
>>> 451222 drwxr-x--- 2 0 2222 512 Nov 25 06:47 .
>>> 162445 drwxr-x--- 5 0 2222 512 Dec 15 04:14 ..
>>> 451223 srwxrwxrwx 1 0 0 0 Nov 25 06:47
pipe
>>>
>>> Now another notice, I made a change last tuesday on another SQUID
server
>>> and this seems working almost one week ..
>>>
>>> $ ls -nai /var/lib/samba
>>> total 78156
>>> 342924 drwxr-xr-x 5 0 2222 512 Dec 15 04:22 .
>>> 66177 drwxr-xr-x 5 0 0 512 Nov 18 01:34 ..
>>> 342930 -rw-r--r-- 1 0 2222 8192 Dec 15 04:22
>>> gencache.tdb
>>> 342932 -rw-r--r-- 1 0 2222 696 Nov 18 01:34
>>> idmap_cache.tdb
>>> 354946 drwxr-xr-x 4 0 2222 512 Nov 18 01:34
locks
>>> 342933 -rw-r--r-- 1 0 2222 8192 Dec 13 22:06
>>> messages.tdb
>>> 342936 -rw-r--r-- 1 0 2222 39903232 Dec 15 10:20
>>> netsamlogon_cache.tdb
>>> 222599 drwxr-xr-x 2 0 2222 512 Dec 15 04:22
>>> smb_krb5
>>> 342934 -rw------- 1 0 0 57344 Dec 9 10:44
>>> winbindd_cache.tdb
>>> 138380 drwxr-x--- 2 0 2222 512 Dec 9 10:39
>>> winbindd_privileged
>>>
>>> $ ls -nai /var/lib/samba/winbindd_privileged
>>> total 4
>>> 138380 drwxr-x--- 2 0 2222 512 Dec 9 10:39 .
>>> 342924 drwxr-xr-x 5 0 2222 512 Dec 15 04:22 ..
>>> 138381 srwxrwxrwx 1 0 0 0 Dec 9 10:39
pipe
>>>
>>> I do not understand anything, maybe situation is more clear for you
..
>>>
>>> Hope some good news from you ..
>>>
>>
>>
>>Sigh, oh dear. sorry no good news. Nothing visible in that trace. I
was
>>hoping it would be clear like squid or winbind setting one of the
>>privileges to root when it shouldn't.
>>
>>You said earlier "process squid is running as user squid and group
>>squidg so afaik permissions below are correct .."
>>
>>You did mean squid starts as root and then sets itself to
>>"cache_effective_user squid" and user squid is a member of group
squidg,
>>right?
>>
>
>I just found another tip on the net by using setgid on ntlm_auth binary
and winbind directory. I will try this tomorow morning .. see below ??
>
>chown -R root:winbind /var/lib/samba
>find /var/lib/samba -type d -exec chmod 750 {} \;
>find /var/lib/samba -type f -exec chmod 640 {} \;
>chown root:winbind /usr/local/bin/ntlm_auth
>chmod 2555 /usr/local/bin/ntlm_auth
>chmod g+s /var/lib/samba/winbindd_privileged
>
>I just tried it on my dev machine and seems to work ..
>
>root_at_sbedskcq:/root# ls -la /usr/local/bin/ntlm_auth
>-r-xr-sr-x 1 root winbind 1205548 Oct 15 20:05
/usr/local/bin/ntlm_auth
>
>root_at_sbedskcq:/root# find /var/lib/samba -ls
>78264 1 drwxr-x--- 4 root winbind 512 Dec 15 19:14
/var/lib/samba
>78244 24 -rw-r----- 1 root winbind 24576 Nov 18 15:48
/var/lib/samba/gencache.tdb
>78248 1 -rw-r----- 1 root winbind 696 Oct 29 07:10
/var/lib/samba/idmap_cache.tdb
>78250 1 -rw-r----- 1 root winbind 696 Dec 15 19:14
/var/lib/samba/messages.tdb
>78310 56 -rw------- 1 root other 57344 Dec 15 19:18
/var/lib/samba/winbindd_cache.tdb
>78297 112 -rw-r----- 1 root winbind 106496 Nov 18 19:04
/var/lib/samba/netsamlogon_cache.tdb
>288828 1 drwxr-s--- 2 root winbind 512 Dec 15 19:14
/var/lib/samba/winbindd_privileged
>288831 0 srwxrwxrwx 1 root winbind 0 Dec 15 19:14
/var/lib/samba/winbindd_privileged/pipe
>288830 1 drwxr-x--- 2 root winbind 512 Dec 15 19:14
/var/lib/samba/smb_krb5
>78309 1 -rw-r--r-- 1 root other 268 Dec 15 19:14
/var/lib/samba/smb_krb5/krb5.conf.EUROPE
>
>root_at_sbedskcq:/root# ps -fu squid -o uid,gid,args
> UID GID COMMAND
> 1560 2222 (ntlm_auth) --helper-protocol=squid-2.5-ntlmssp
> 1560 2222 (ntlm_auth) --helper-protocol=squid-2.5-ntlmssp
> 1560 1560 diskd 27083780 27083781 27083782
> 1560 2222 (ntlm_auth) --helper-protocol=squid-2.5-ntlmssp
> 1560 2222 (ntlm_auth) --helper-protocol=squid-2.5-ntlmssp
> 1560 2222 (ntlm_auth) --helper-protocol=squid-2.5-ntlmssp
> 1560 1560 diskd 27083776 27083777 27083778
> 1560 2222 (ntlm_auth) --helper-protocol=squid-2.5-ntlmssp
> 1560 2222 (ntlm_auth) --helper-protocol=squid-2.5-ntlmssp
> 1560 2222 (ntlm_auth) --helper-protocol=squid-2.5-ntlmssp
> 1560 1560 (squid) -f /home/SQUID/etc/squid.conf.2.7.4 -D
> 1560 2222 (ntlm_auth) --helper-protocol=squid-2.5-ntlmssp
> 1560 2222 (ntlm_auth) --helper-protocol=squid-2.5-ntlmssp
> 1560 2222 (ntlm_auth) --helper-protocol=squid-2.5-ntlmssp
> 1560 2222 (ntlm_auth) --helper-protocol=squid-2.5-ntlmssp
> 1560 2222 (ntlm_auth) --helper-protocol=squid-2.5-ntlmssp
> 1560 1560 (unlinkd)
> 1560 2222 (ntlm_auth) --helper-protocol=squid-2.5-ntlmssp
> 1560 2222 (ntlm_auth) --helper-protocol=squid-2.5-ntlmssp
> 1560 1560 /usr/local/sbin/squid -f /home/SQUID/etc/squid.conf.2.7.4
-D
>
>I keep you informed.
>

So what's new ... very bad news! :(-

So as mentionned, I tried the setgid winbind and this also not works BUT
something interesting I also tried setuid root and this also fails so,
as far as I can understand I think the problem is not coming from a lack
of permission of ntlm_auth on /var/lib/samba/winbindd_privileged
directory.

In this context the problem is maybe not coming from SQUID but from
SAMBA (ntlm_auth internal code) ...

What do you think about it ??

>>>
>>>> This will be needed by anyone who may be more able to help.
>>>>
>>>>
>>
>>Amos
>>--
>>Please be using
>> Current Stable Squid 2.7.STABLE5 or 3.0.STABLE10
>> Current Beta Squid 3.1.0.3 or 3.0.STABLE11-RC1
>>
>
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Received on Wed Dec 17 2008 - 17:37:25 MST