Refactor the way subdomain accounts are saved

The original sysdb code had a strong assumption that only users from one
domain are saved in the databse, with the subdomain feature, we have
changed reality, but have not adjusted all the code arund the sysdb calls
to not rely on the original assumption.

One of the side effects of this incongrunece is that currently group
memberships do not return fully qualified names for subdomain users as they
should.

In oreder to fix this and other potential issues surrounding the violation
of the original assumption, we need to fully qualify subdomain user names.
By savin them fully qualified we do not risk aliasing local users and have
group memberhips or other name based matching code mistake a domain user
with subdomain usr or vice versa.

1 files changed, 11 insertions, 0 deletions

diff --git a/src/providers/data_provider_be.c b/src/providers/data_provider_be.c
index 685c666a8..f4ad85365 100644
--- a/src/providers/data_provider_be.c
+++ b/src/providers/data_provider_be.c
@@ -2188,6 +2188,17 @@ int be_process_init(TALLOC_CTX *mem_ctx,
         goto fail;
     }
 
+    /* We need this for subdomains support, as they have to store fully
+     * qualified user and group names for now */
+    ret = sss_names_init(ctx->domain, cdb,
+                         ctx->domain->name, &ctx->domain->names);
+    if (ret != EOK) {
+        DEBUG(SSSDBG_FATAL_FAILURE,
+              ("fatal error setting fully qualified name format for %s\n",
+              ctx->domain->name));
+        goto fail;
+    }
+
     ret = be_srv_init(ctx);
     if (ret != EOK) {
         DEBUG(SSSDBG_FATAL_FAILURE, ("fatal error setting up server bus\n"));