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Re: Bad matching with wide-byte characters (ITS#1771)

It appears that the string library you are using is not
8-bit clean.  If an update is not available, I suggest
you use an alternative string library.


At 09:21 PM 2002-04-23, hirofumi@momose.com wrote:
>Full_Name: Hirofumi Momose
>Version: 2.0.23
>OS: Solaris 2.6
>Submission from: (NULL) (
>I found a problem of search operation with 2-byte characters.
>a) The directory has following entry.
> dn: cn=hoashi,o=foo.com
> cn: hoashi
> sn:: 44G744GC44GX
> objectClass: top
> objectClass: person
>b) Search by ldap client with filter byte sequence of
> 0x73,0x6e,0x3d,0xe3,0x81,0xbb,0xe3,0x81,0x92,0x2a
> which describe "sn=WIDE_BYTE_CHARACTERS*".
> Above sn does not match of entry.
>c) Server respond the entry matched.
> I found the problem caused by strncasecmp() in
> caseIgnoreSubstringsFilter(). 8-bit width data flows into
> strncasecmp() of this place. This result generates a problem.
>Best regards.