DNS sites support - use SRV DNS lookup plugin in all providers

https://fedorahosted.org/sssd/ticket/1032

We set a plugin during an initialization of ID provider, which
is an authoritative provider for a plugin choice. The plugin is
set only once. When other provider is initalized (e.g. id = IPA,
sudo = LDAP), we do not overwrite the plugin.

Since sssm_*_id_init() is called from all module constructors,
this patch relies on the fact, that ID provider is initialized
before all other providers.

1 files changed, 9 insertions, 0 deletions

diff --git a/src/providers/ldap/ldap_init.c b/src/providers/ldap/ldap_init.c
index fa888ba7..2e30c37e 100644
--- a/src/providers/ldap/ldap_init.c
+++ b/src/providers/ldap/ldap_init.c
@@ -29,6 +29,7 @@
 #include "providers/ldap/sdap_sudo.h"
 #include "providers/ldap/sdap_autofs.h"
 #include "providers/ldap/sdap_idmap.h"
+#include "providers/fail_over_srv.h"
 
 static void sdap_shutdown(struct be_req *req);
 
@@ -172,6 +173,14 @@ int sssm_ldap_id_init(struct be_ctx *bectx,
         goto done;
     }
 
+    /* setup SRV lookup plugin */
+    ret = be_fo_set_dns_srv_lookup_plugin(bectx, NULL);
+    if (ret != EOK) {
+        DEBUG(SSSDBG_CRIT_FAILURE, ("Unable to set SRV lookup plugin "
+                                    "[%d]: %s\n", ret, strerror(ret)));
+        goto done;
+    }
+
     *ops = &sdap_id_ops;
     *pvt_data = ctx;
     ret = EOK;