[Bug 281802] New: KCheckpass doesn't work correctly with samba accounts

[cn001 at gmx.de]

https://bugs.kde.org/show_bug.cgi?id=281802

           Summary: KCheckpass doesn't work correctly with samba accounts
           Product: kde
           Version: 4.6
          Platform: openSUSE RPMs
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: unassigned-bugs at kde.org
        ReportedBy: cn001 at gmx.de


Version:           4.6
OS:                Linux

I can log into a session with a samba user account using kdm, but when I lock
the screen, I can't unlock it anymore.
I tried to execute kcheckpass in a terminal and monitor the syslog files.
When I enter an incorrect password, kcheckpass will tell me

Error: Wrong Password
Authentication failure

The log tells me that the password is wrong, too:

Sep 11 15:15:12 pccn01 kcheckpass[8059]: pam_winbind(xdm:auth): request
wbcLogonUser failed: WBC_ERR_AUTH_ERROR, PAM error: PAM_AUTH_ERR (7), NTSTATUS:
NT_STATUS_WRONG_PASSWORD, Error message was: Wrong Password

So far this works as expected, but now here comes the problem:
When I try to enter the correct password, kcheckpass tells me "Authentication
failure" and returns a value of 1 which means "incorrect password".
But the log now tells me
Sep 11 15:21:50 pccn01 kcheckpass[8269]: pam_winbind(xdm:auth): user
'NITSCHKOWSKI\christian' granted access
Sep 11 15:21:50 pccn01 kcheckpass[8269]: Authentication failure for
christian at NITSCHKOWSKI (invoked by uid 0)

I can log on using kdm and the plain shell login, just kcheckpass doesn't work.

The permissions on kcheckpass are 4755 root shadow.

Reproducible: Always

Steps to Reproduce:
1. Call kcheckpass -U user at domain
2. Enter correct Password of the provided user.

Actual Results:  
The syslog contains a line stating the login was successfull and another line
stating the authentication failed.
The kcheckpass utility returns a value of 1, stating the password was
incorrect.

Expected Results:  
The syslog should contain a line stating the login was successfull and the
kcheckpass utility should return the value 0.

-- 
Configure bugmail: https://bugs.kde.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.