Resolves: #437525

Summary: GER: allow GER for non-existing entries
Description:
[slapd/charray.c]
new: charray_merge_nodup -- merge 2 string arrays skipping the duplicates
modified: charray_remove -- introduced "freeit" flag.  If true, the removed
string is freed.  (The API is used only in chainingdb.	The change is applied
to the plugin.)

[slapd/opshared.c]
modified: check OP_FLAG_GET_EFFECTIVE_RIGHTS in the iterate to support
"@<objectclass>".  It's needed to do at the location since we have to call acl
plugin even
when no entries are returned from the search.  If no entries are returned and
"@<objectclass>" is found in the attribute list, acl effective rights code
generates the corresponding template entry.

[slapd/pblock.c]
place to store gerattrs is added (SLAPI_SEARCH_GERATTRS), where gerattrs is an
array of strings which store "...@<objectclass>".

[slapd/result.c]
moved OP_FLAG_GET_EFFECTIVE_RIGHTS checking to iterate (opshared.c)

[slapd/schema.c]
new: slapi_schema_list_objectclass_attributes -- return the required and/or
allowed attributes belonging to the given objectclass.	This is used to support
"*" and "+" in the get effective rights.
new: slapi_schema_get_superior_name -- return the superior objectclass name of
the given objectclass.

[slapd/search.c]
if "<attr>@<objectclass>" is found in the attribute list, cut the <attr> part
out and added to the attrs array (pblock SLAPI_SEARCH_ATTRS) and store the
original
string to the gerattrs (pblock SLAPI_SEARCH_GERATTRS).

[plugin/acl/acleffectiverights.c]
modified: _ger_g_permission_granted -- if the requester and the subject user
are
identical, give "g" permission
modified: _ger_parse_control -- replaced strcpy with memmove since strcpy does
not guarantee the result of the overlap copy.
modified: _ger_get_attrs_rights -- support "*" (all attributes belonging to the
object) and "+" (operational attributes).  If repeated attributes are found in
the given attribute list, they are reduced to one.
new: _ger_generate_template_entry -- generate a template entry if
"@<objectclass>" is passed.

[pluginc/cb/*]
adjusted to the updated charray_remove.

Please see also this wiki page for the overview and test cases.
http://directory.fedoraproject.org/wiki/Get_Effective_Rights_for_non-present_attributes

1 files changed, 12 insertions, 0 deletions

diff --git a/ldap/servers/slapd/pblock.c b/ldap/servers/slapd/pblock.c
index ae98dc23..987b2476 100644
--- a/ldap/servers/slapd/pblock.c
+++ b/ldap/servers/slapd/pblock.c
@@ -1231,6 +1231,12 @@ slapi_pblock_get( Slapi_PBlock *pblock, int arg, void *value )
 			(*(char ***)value) = pblock->pb_op->o_params.p.p_search.search_attrs;
 		}
 		break;
+	case SLAPI_SEARCH_GERATTRS:
+		if(pblock->pb_op!=NULL)
+		{
+			(*(char ***)value) = pblock->pb_op->o_params.p.p_search.search_gerattrs;
+		}
+		break;
 	case SLAPI_SEARCH_ATTRSONLY:
 		if(pblock->pb_op!=NULL)
 		{
@@ -2509,6 +2515,12 @@ slapi_pblock_set( Slapi_PBlock *pblock, int arg, void *value )
 			pblock->pb_op->o_params.p.p_search.search_attrs = (char **) value;
 		}
 		break;
+	case SLAPI_SEARCH_GERATTRS:
+		if(pblock->pb_op!=NULL)
+		{
+			pblock->pb_op->o_params.p.p_search.search_gerattrs = (char **) value;
+		}
+		break;
 	case SLAPI_SEARCH_ATTRSONLY:
 		if(pblock->pb_op!=NULL)
 		{