From 38ad60f67820076b45ce0e33c96a651f3dd5ca70 Mon Sep 17 00:00:00 2001
From: Sumit Bose <sbose@redhat.com>
Date: Mon, 22 Sep 2014 18:37:44 +0200
Subject: [PATCH 7/9] sysdb: sysdb_apply_default_override

The default view is special in the sense that it is the baseline for
every other view and that it always applies even if there is no view
defined. To avoid useless additional processing the default view
overrides are written directly to the corresponding cached object.
---
 src/db/sysdb.h       |  4 +++
 src/db/sysdb_views.c | 84 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 88 insertions(+)

diff --git a/src/db/sysdb.h b/src/db/sysdb.h
index b77e822..b30d268 100644
--- a/src/db/sysdb.h
+++ b/src/db/sysdb.h
@@ -421,6 +421,10 @@ errno_t sysdb_update_view_name(struct sysdb_ctx *sysdb, const char *view_name);
 errno_t sysdb_get_view_name(TALLOC_CTX *mem_ctx, struct sysdb_ctx *sysdb,
                             char **view_name);
 
+errno_t sysdb_apply_default_override(struct sss_domain_info *domain,
+                                     struct sysdb_attrs *override_attrs,
+                                     struct ldb_dn *obj_dn);
+
 /* Sysdb initialization.
  * call this function *only* once to initialize the database and get
  * the sysdb ctx */
diff --git a/src/db/sysdb_views.c b/src/db/sysdb_views.c
index dd614b8..3f22f3b 100644
--- a/src/db/sysdb_views.c
+++ b/src/db/sysdb_views.c
@@ -461,3 +461,87 @@ done:
     talloc_zfree(tmp_ctx);
     return ret;
 }
+
+errno_t sysdb_apply_default_override(struct sss_domain_info *domain,
+                                     struct sysdb_attrs *override_attrs,
+                                     struct ldb_dn *obj_dn)
+{
+    int ret;
+    TALLOC_CTX *tmp_ctx;
+    struct sysdb_attrs *attrs;
+    size_t c;
+    struct ldb_message_element *el = NULL;
+    const char *allowed_attrs[] = { SYSDB_UIDNUM,
+                                    SYSDB_GIDNUM,
+                                    SYSDB_GECOS,
+                                    SYSDB_HOMEDIR,
+                                    SYSDB_SHELL,
+                                    SYSDB_NAME,
+                                    NULL };
+    bool override_attrs_found = false;
+
+    tmp_ctx = talloc_new(NULL);
+    if (tmp_ctx == NULL) {
+        DEBUG(SSSDBG_OP_FAILURE, "talloc_new failed.\n");
+        return ENOMEM;
+    }
+
+    attrs = sysdb_new_attrs(tmp_ctx);
+    if (attrs == NULL) {
+        DEBUG(SSSDBG_OP_FAILURE, "sysdb_new_attrs failed.\n");
+        ret = ENOMEM;
+        goto done;
+    }
+
+    for (c = 0; allowed_attrs[c] != NULL; c++) {
+        ret = sysdb_attrs_get_el_ext(override_attrs, allowed_attrs[c], false,
+                                     &el);
+        if (ret == EOK) {
+            override_attrs_found = true;
+            ret = sysdb_attrs_add_val(attrs,  allowed_attrs[c], &el->values[0]);
+            if (ret != EOK) {
+                DEBUG(SSSDBG_OP_FAILURE, "sysdb_attrs_add_val failed.\n");
+                goto done;
+            }
+            DEBUG(SSSDBG_TRACE_ALL, "Override [%s] with [%.*s] for [%s].\n",
+                                    allowed_attrs[c],
+                                    (int) el->values[0].length,
+                                    el->values[0].data,
+                                    ldb_dn_get_linearized(obj_dn));
+
+            if (strcmp(allowed_attrs[c], SYSDB_NAME) == 0) {
+                if (el->values[0].data[el->values[0].length] != '\0') {
+                    DEBUG(SSSDBG_CRIT_FAILURE,
+                          "String attribute does not end with \\0.\n");
+                    ret = EINVAL;
+                    goto done;
+                }
+
+                ret = add_aliases_for_name_override(domain, attrs,
+                                                   (char *) el->values[0].data);
+                if (ret != EOK) {
+                    DEBUG(SSSDBG_OP_FAILURE,
+                          "add_aliases_for_name_override failed.\n");
+                    goto done;
+                }
+            }
+        } else if (ret != ENOENT) {
+            DEBUG(SSSDBG_OP_FAILURE, "sysdb_attrs_get_el_ext failed.\n");
+            goto done;
+        }
+    }
+
+    if (override_attrs_found) {
+        ret = sysdb_set_entry_attr(domain->sysdb, obj_dn, attrs, SYSDB_MOD_REP);
+        if (ret != EOK) {
+            DEBUG(SSSDBG_OP_FAILURE, "sysdb_set_entry_attr failed.\n");
+            goto done;
+        }
+    }
+
+    ret = EOK;
+
+done:
+    talloc_free(tmp_ctx);
+    return ret;
+}
-- 
1.8.3.1