[Fedora-directory-devel] Please review: [Bug 199923] subtree search fails to find items under a db containing special characters

[Noriko Hosoi]

Sorry, I forgot to add the keyword "Please review" to the subject... :p
> Summary: subtree search fails to find items under a db containing 
> special characters
>
> https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=199923
>
> Bug Description:
> When add or import an entry which dn contains '\\', subtree search 
> does not return the entry even though the entry satisfies the search 
> criteria.
>
> ------- Additional Comments From nhosoi at redhat.com  2006-10-30 16:47 
> EST -------
> Created an attachment (id=139778)
> --> 
> (https://bugzilla.redhat.com/bugzilla/attachment.cgi?id=139778&action=view) 
>
> sample ldif
>
> step to reproduce:
> 1) stop slapd
> 2) import the sample ldif file
> 3) run subtree search with the filter "(ou=*)" and the attribute list 
> "dn"
>
> expected result:
> search result
> dn: ou=Accounting, dc=example,dc=com
>
> actual result:
> search result
> dn: ou=Accounting, dc=example,dc=com
> dn: ou=\#\,\+\"\\\>:\=\<\<\>\;/, dc=example,dc=com
> dn: uid=TVradmin0, ou=\#\,\+\"\\\>:\=\<\<\>\;/, dc=entry,dc=com
>
> ------- Additional Comments From nhosoi at redhat.com  2006-10-30 19:24 
> EST -------
> Created an attachment (id=139786)
> --> 
> (https://bugzilla.redhat.com/bugzilla/attachment.cgi?id=139786&action=view) 
>
> cvs diffs (ldapserver)
>
> Files:
> ldap/servers/slapd/back-ldbm/backentry.c
> ldap/servers/slapd/back-ldbm/import-threads.c \
> ldap/servers/slapd/back-ldbm/ldbm_add.c \
> ldap/servers/slapd/back-ldbm/proto-back-ldbm.h
>
> Bug description:
> The directory server internally normalizes the dn and uses the 
> normalized dn to
> compare.  In some cases, the server was normalizing the dn more than 
> once. Normally, the normalized string is identical to the renormalized 
> dn. { i.e.,
> normalized_dn == normalize(normalize_dn) }  The problem is, if the dn 
> contains
> '\\' (not just the escape character, but it contains some real backslash
> characters: dn: ou=\#\,\+\"\\\>:\=\<\<\>\;/, dc=example,dc=com), the 
> string is
> transformed to the one which is not considered to be the same as the 
> original. (the normalization is done in the function 
> substr_dn_normalize in slapd/dn.c;
> if you are interested in, the function has a detailed comment).
>
> Changes:
> Avoid re-normalizing an already normalized dn.    It should be better 
> from the
> performance point of view, as well.
>
> Note:
> When running ldapsearch having such attribute values containing '"' in 
> it, we
> should use single quote to quote the string.  Otherwise, the command line
> interface consumes the backslash before '"' and mismatched string is 
> passed to
> the server and returns "no such object".
> $ dapsearch -p <port> -D "cn=Directory Manager" -w <pw> -b
> 'ou=\#\,\+\"\\\>:\=\<\<\>\;/, dc=example,dc=com'
> '(ou=\#\,\+\"\\\>:\=\<\<\>\;/)'
> version: 1
> dn: ou=\#\,\+\"\\\>:\=\<\<\>\;/, dc=example,dc=com
> objectClass: organizationalUnit
> objectClass: top
> ou: \#\,\+\"\\\>:\=\<\<\>\;/
> ou: #,+"\>:=<<>;/
>
> $ ldapsearch -p <port> -D "cn=Directory Manager" -w <pw> -b
> "ou=\#\,\+\"\\\>:\=\<\<\>\;/, dc=example,dc=com"
> "(ou=\#\,\+\"\\\>:\=\<\<\>\;/)"
> ldap_search: No such object
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