[Bug nscd/16758] nscd incorrectly returns failure for innetgr for netgroup entries with wildcards in them

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https://sourceware.org/bugzilla/show_bug.cgi?id=16758

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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=fbd6b5a4052316f7eb03c4617eebfaafc59dcc06

commit fbd6b5a4052316f7eb03c4617eebfaafc59dcc06
Author: Siddhesh Poyarekar <siddhesh@redhat.com>
Date:   Thu Mar 27 07:15:22 2014 +0530

    Fix nscd lookup for innetgr when netgroup has wildcards (BZ #16758)

    nscd works correctly when the request in innetgr is a wildcard,
    i.e. when one or more of host, user or domain parameters is NULL.
    However, it does not work when the the triplet in the netgroup
    definition has a wildcard.  This is easy to reproduce for a triplet
    defined as follows:

        foonet (,foo,)

    Here, an innetgr call that looks like this:

        innetgr ("foonet", "foohost", "foo", NULL);

    should succeed and so should:

        innetgr ("foonet", NULL, "foo", "foodomain");

    It does succeed with nscd disabled, but not with nscd enabled.  This
    fix adds this additional check for all three parts of the triplet so
    that it gives the correct result.

        [BZ #16758]
        * nscd/netgroupcache.c (addinnetgrX): Succeed if triplet has
        blank values.

-----------------------------------------------------------------------

Summary of changes:
 ChangeLog            |    6 ++++++
 NEWS                 |    2 +-
 nscd/netgroupcache.c |   10 +++++++---
 3 files changed, 14 insertions(+), 4 deletions(-)

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