                 pam_succeed_if — test account characteristics

   ══════════════════════════════════════════════════════════════════════════

DESCRIPTION

   pam_succeed_if.so is designed to succeed or fail authentication based on
   characteristics of the account belonging to the user being authenticated
   or values of other PAM items. One use is to select whether to load other
   modules based on this test.

   The module should be given one or more conditions as module arguments, and
   authentication will succeed only if all of the conditions are met.

OPTIONS

   The following flags are supported:

   debug

   Turns on debugging messages sent to syslog.

   use_uid

   Evaluate conditions using the account of the user whose UID the
   application is running under instead of the user being authenticated.

   quiet

   Don't log failure or success to the system log.

   quiet_fail

   Don't log failure to the system log.

   quiet_success

   Don't log success to the system log.

   audit

   Log unknown users to the system log.

   Conditions are three words: a field, a test, and a value to test for.

   Available fields are user, uid, gid, shell, home, ruser, rhost, tty and
   service:

   field < number

   Field has a value numerically less than number.

   field <= number

   Field has a value numerically less than or equal to number.

   field eq number

   Field has a value numerically equal to number.

   field >= number

   Field has a value numerically greater than or equal to number.

   field > number

   Field has a value numerically greater than number.

   field ne number

   Field has a value numerically different from number.

   field = string

   Field exactly matches the given string.

   field != string

   Field does not match the given string.

   field =~ glob

   Field matches the given glob.

   field !~ glob

   Field does not match the given glob.

   field in item:item:...

   Field is contained in the list of items separated by colons.

   field notin item:item:...

   Field is not contained in the list of items separated by colons.

   user ingroup group[:group:....]

   User is in given group(s).

   user notingroup group[:group:....]

   User is not in given group(s).

   user innetgr netgroup

   (user,host) is in given netgroup.

   user notinnetgr group

   (user,host) is not in given netgroup.

EXAMPLES

   To emulate the behaviour of pam_wheel, except there is no fallback to
   group 0 being only approximated by checking also the root group
   membership:

 auth required pam_succeed_if.so quiet user ingroup wheel:root


   Given that the type matches, only loads the othermodule rule if the UID is
   over 500. Adjust the number after default to skip several rules.

 type [default=1 success=ignore] pam_succeed_if.so quiet uid > 500
 type required othermodule.so arguments...


AUTHOR

   Nalin Dahyabhai <nalin@redhat.com>
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