FW: Samba intermittently rejecting connection requests (PR#25232 )

[Andrew Bartlett]

"Ladner, Eric (Eric.Ladner)" wrote:
> 
> SAMBA:  3.0 alpha18
> OS:     HP-UX 11.0
> Client: XP Professional
> 
> I have a problem with a user mapping a network drive.  Sometimes
> he can map it, sometimes he can't.
> 
> rsc is a valid account on the machine he's trying to connect to
> (entry in /etc/passwd, decent permissions on home directory and
> all parent directories, etc.)
> 
> The strange thing is sometimes it works, and sometimes it
> doesn't.  If it doesn't connect, if he reboots enough times,
> eventually it will connect.

The difference is 'has the user connected to their home directory on
this TCP/IP session'.  The second attempt to connect on that TCP/IP
connection breaks :-(.

> Here's some more I dug up (snippets from the logs -- I highlited
> the differences with ** at the beginning of the line):
> 
> If he does connect, the log looks like this:
> 
> [2002/08/05 06:08:35, 3] smbd/password.c:register_vuid(300)
>   uid 234 registered to name rsc
> [2002/08/05 06:08:35, 7] smbd/password.c:register_vuid(313)
>   User [rsc],  unix_homedir [/home/www/rsc]
> [2002/08/05 06:08:35, 7] smbd/password.c:register_vuid(314)
>   vuser->guest is false
> [2002/08/05 06:08:35, 7] smbd/password.c:register_vuid(315)
> [2002/08/05 06:08:35, 7] param/loadparm.c:lp_servicenumber(3666)
> **  lp_servicenumber: couldn't find rsc
> **  lp_servicenumber('rsc') is -1
> [2002/08/05 06:08:35, 7] param/loadparm.c:lp_servicenumber(3666)
> **  lp_servicenumber: couldn't find rsc
> [2002/08/05 06:08:35, 3] param/loadparm.c:lp_add_home(1929)
> **  adding home's share [rsc] for user rsc at /home/www/rsc
> . . . Stuff omittied
> [2002/08/05 06:08:35, 5] smbd/uid.c:change_to_root_user(210)
>   change_to_root_user: now uid=(0,0) gid=(0,0)
> [2002/08/05 06:08:35, 4] smbd/reply.c:reply_tcon_and_X(255)
>   Got device type ?????
> [2002/08/05 06:08:35, 5] smbd/service.c:make_connection(773)
> ** I added this debug line below **
> **  Service in: [HOMES], HOMES_NAME: [homes], vuser->homes_snum [5]
> [2002/08/05 06:08:35, 5] smbd/service.c:make_connection(778)
> **  making a connection to [homes] service created at session setup time
> [2002/08/05 06:08:35, 5] lib/username.c:Get_Pwnam_internals(223)
>   Trying _Get_Pwnam(), username as lowercase is rsc
> [2002/08/05 06:08:35, 5] lib/username.c:Get_Pwnam_internals(251)
>   Get_Pwnam_internals did find user [rsc]!
> [2002/08/05 06:08:35, 3] smbd/service.c:make_connection_snum(524)
> **  Connect path is /home/www/rsc
> 
> If he doesn't connect, it looks like this:
> 
> [2002/08/05 06:08:35, 3] smbd/password.c:register_vuid(300)
>   uid 234 registered to name rsc
> [2002/08/05 06:08:35, 7] smbd/password.c:register_vuid(313)
>   User [rsc],  unix_homedir [/home/www/rsc]
> [2002/08/05 06:08:35, 7] smbd/password.c:register_vuid(314)
>   vuser->guest is false
> [2002/08/05 06:08:35, 7] smbd/password.c:register_vuid(315)
> **  lp_servicenumber('rsc') is 5
> . . . Stuff omitted
> [2002/08/05 06:08:35, 5] smbd/uid.c:change_to_root_user(210)
>   change_to_root_user: now uid=(0,0) gid=(0,0)
> [2002/08/05 06:08:35, 4] smbd/reply.c:reply_tcon_and_X(255)
>   Got device type ?????
> [2002/08/05 06:08:35, 5] smbd/service.c:make_connection(773)
> ** I added this debug line below **
> **  Service in: [HOMES], HOMES_NAME: [homes], vuser->homes_snum [-1]
> [2002/08/05 06:08:35, 5] smbd/service.c:make_connection(828)
> **  making a connection to 'normal' service homes
> [2002/08/05 06:08:35, 5] lib/username.c:Get_Pwnam_internals(223)
>   Trying _Get_Pwnam(), username as lowercase is rsc
> [2002/08/05 06:08:35, 5] lib/username.c:Get_Pwnam_internals(251)
>   Get_Pwnam_internals did find user [rsc]!
> [2002/08/05 06:08:35, 3] smbd/service.c:make_connection_snum(524)
> **  Connect path is
> 
> (I monkied with the times to do a diff between the two connects, so ignore
> the timestamps).

Yep, I broke it :-)

Fixed in current HEAD. 

Andrew Bartlett

-- 
Andrew Bartlett                                 abartlet at pcug.org.au
Manager, Authentication Subsystems, Samba Team  abartlet at samba.org
Student Network Administrator, Hawker College   abartlet at hawkerc.net
http://samba.org     http://build.samba.org     http://hawkerc.net