confdb: add confdb_list_all_domain_names()

Reviewed-by: Jakub Hrozek <jhrozek@redhat.com>

2 files changed, 80 insertions, 0 deletions

diff --git a/src/confdb/confdb.c b/src/confdb/confdb.c
index 9a13f723d..6f36535fd 100644
--- a/src/confdb/confdb.c
+++ b/src/confdb/confdb.c
@@ -1271,3 +1271,67 @@ int confdb_get_domain(struct confdb_ctx *cdb,
 
     return ENOENT;
 }
+
+int confdb_list_all_domain_names(TALLOC_CTX *mem_ctx,
+                                 struct confdb_ctx *cdb,
+                                 char ***_names)
+{
+    TALLOC_CTX *tmp_ctx = NULL;
+    struct ldb_dn *dn = NULL;
+    struct ldb_result *res = NULL;
+    static const char *attrs[] = {CONFDB_DOMAIN_ATTR, NULL};
+    const char *name = NULL;
+    char **names = NULL;
+    int i;
+    int ret;
+
+    tmp_ctx = talloc_new(NULL);
+    if (tmp_ctx == NULL) {
+        return ENOMEM;
+    }
+
+    dn = ldb_dn_new(tmp_ctx, cdb->ldb, CONFDB_DOMAIN_BASEDN);
+    if (dn == NULL) {
+        ret = ENOMEM;
+        goto done;
+    }
+
+    ret = ldb_search(cdb->ldb, tmp_ctx, &res, dn, LDB_SCOPE_ONELEVEL,
+                     attrs, NULL);
+    if (ret != LDB_SUCCESS) {
+        ret = EIO;
+        goto done;
+    }
+
+    names = talloc_zero_array(tmp_ctx, char*, res->count + 1);
+    if (names == NULL) {
+        ret = ENOMEM;
+        goto done;
+    }
+
+    for (i = 0; i < res->count; i++) {
+        name = ldb_msg_find_attr_as_string(res->msgs[i], CONFDB_DOMAIN_ATTR,
+                                           NULL);
+        if (name == NULL) {
+            DEBUG(SSSDBG_MINOR_FAILURE,
+                  "The object [%s] doesn't have a name\n",
+                   ldb_dn_get_linearized(res->msgs[i]->dn));
+            ret = EINVAL;
+            goto done;
+        }
+
+        names[i] = talloc_strdup(names, name);
+        if (names[i] == NULL) {
+            ret = ENOMEM;
+            goto done;
+        }
+    }
+
+    *_names = talloc_steal(mem_ctx, names);
+
+    ret = EOK;
+
+done:
+    talloc_free(tmp_ctx);
+    return ret;
+}
diff --git a/src/confdb/confdb.h b/src/confdb/confdb.h
index 7994a6757..2cebf2426 100644
--- a/src/confdb/confdb.h
+++ b/src/confdb/confdb.h
@@ -297,6 +297,22 @@ int confdb_get_domain(struct confdb_ctx *cdb,
 int confdb_get_domains(struct confdb_ctx *cdb,
                        struct sss_domain_info **domains);
 
+/**
+ * Get a null-terminated linked-list of all domain names
+ * @param[in] mem_ctx The parent memory context for the value list
+ * @param[in] cdb The connection object to the confdb
+ * @param[out] _names Output list
+ *
+ * @return 0 - Lookup succeeded and all domain names are in the list
+ * @return ENOMEM - There was insufficient memory to complete the operation
+ * @return ENOENT - No active domains are configured
+ * @return EIO - There was an I/O error communicating with the ConfDB file
+ * @return EINVAL - Corrupted confdb object
+ */
+int confdb_list_all_domain_names(TALLOC_CTX *mem_ctx,
+                                 struct confdb_ctx *cdb,
+                                 char ***_names);
+
 
 /**
  * @brief Add an arbitrary parameter to the confdb.