IPA: Add interface to call into IPA provider from LDAP provider

https://fedorahosted.org/sssd/ticket/2522

Adds a pluggable interface that is able to resolve the IPA group's
external members. At the moment, the request calls the full be_
interface to make sure all corner cases like id-views are handled
internally.

Reviewed-by: Sumit Bose <sbose@redhat.com>

1 files changed, 23 insertions, 0 deletions

diff --git a/src/providers/ldap/sdap.h b/src/providers/ldap/sdap.h
index 9dc2e16a0..e0e05da0c 100644
--- a/src/providers/ldap/sdap.h
+++ b/src/providers/ldap/sdap.h
@@ -423,6 +423,26 @@ struct sdap_domain {
     void *pvt;
 };
 
+typedef struct tevent_req *
+(*ext_member_send_fn_t)(TALLOC_CTX *mem_ctx,
+                        struct tevent_context *ev,
+                        const char *ext_member,
+                        void *pvt);
+typedef errno_t
+(*ext_member_recv_fn_t)(TALLOC_CTX *mem_ctx,
+                        struct tevent_req *req,
+                        enum sysdb_member_type *member_type,
+                        struct sss_domain_info **_dom,
+                        struct sysdb_attrs **_member);
+
+struct sdap_ext_member_ctx {
+    /* Typically ID context of the external ID provider */
+    void *pvt;
+
+    ext_member_send_fn_t ext_member_resolve_send;
+    ext_member_recv_fn_t ext_member_resolve_recv;
+};
+
 struct sdap_options {
     struct dp_option *basic;
     struct sdap_attr_map *gen_map;
@@ -435,6 +455,9 @@ struct sdap_options {
     /* ID-mapping support */
     struct sdap_idmap_ctx *idmap_ctx;
 
+    /* Resolving external members */
+    struct sdap_ext_member_ctx *ext_ctx;
+
     /* FIXME - should this go to a special struct to avoid mixing with name-service-switch maps? */
     struct sdap_attr_map *sudorule_map;
     struct sdap_attr_map *autofs_mobject_map;