UTIL: Convert domain->disabled into tri-state with domain states

Required for:
https://fedorahosted.org/sssd/ticket/2637

This is a first step towards making it possible for domain to be around,
but not contacted by Data Provider.

Also explicitly create domains as active, previously we only relied on
talloc_zero marking dom->disabled as false.

Reviewed-by: Pavel Březina <pbrezina@redhat.com>

2 files changed, 20 insertions, 1 deletions

diff --git a/src/confdb/confdb.c b/src/confdb/confdb.c
index 3a8a1c01b..c097aad77 100644
--- a/src/confdb/confdb.c
+++ b/src/confdb/confdb.c
@@ -1342,6 +1342,8 @@ static int confdb_get_domain_internal(struct confdb_ctx *cdb,
     domain->has_views = false;
     domain->view_name = NULL;
 
+    domain->state = DOM_ACTIVE;
+
     *_domain = domain;
     ret = EOK;
 done:
diff --git a/src/confdb/confdb.h b/src/confdb/confdb.h
index 427c309a2..eca3d4475 100644
--- a/src/confdb/confdb.h
+++ b/src/confdb/confdb.h
@@ -216,6 +216,23 @@
 struct confdb_ctx;
 struct config_file_ctx;
 
+/** sssd domain state */
+enum sss_domain_state {
+    /** Domain is usable by both responders and providers. This
+     * is the default state after creating a new domain
+     */
+    DOM_ACTIVE,
+    /** Domain was removed, should not be used be neither responders
+     * not providers.
+     */
+    DOM_DISABLED,
+    /** Domain cannot be contacted. Providers return an offline error code
+     * when receiving request for inactive domain, but responders should
+     * return cached data
+     */
+    DOM_INACTIVE,
+};
+
 /**
  * Data structure storing all of the basic features
  * of a domain.
@@ -278,7 +295,7 @@ struct sss_domain_info {
     struct sss_domain_info *prev;
     struct sss_domain_info *next;
 
-    bool disabled;
+    enum sss_domain_state state;
     char **sd_inherit;
 
     /* Do not use the forest pointer directly in new code, but rather the