Modify osp_get_vts_version()

As get_vts OSP command was extended with a new attribute version_only,
the function use get_vts with this attribute instead of the get_version command,
because now all wrappers have a vts collection and therefore, not always
get_version response has a vts entity.

CHANGELOG.md

@@ -26,6 +26,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ### Changed
 - Improve validation in is_hostname [#353](https://github.com/greenbone/gvm-libs/pull/353)
+- Use get_vts instead of get_version to get the feed version is osp_get_vts_version(). [#357](https://github.com/greenbone/gvm-libs/pull/357)
 
 ### Fixed
 - Fix is_cidr_block(). [#322](https://github.com/greenbone/gvm-libs/pull/322)

osp/osp.c

@@ -335,34 +335,43 @@ osp_get_version (osp_connection_t *connection, char **s_name, char **s_version,
  * @return 0 if success, 1 if error.
  */
 int
-osp_get_vts_version (osp_connection_t *connection, char **vts_version)
+osp_get_vts_version (osp_connection_t *connection, char **vts_version,
+                     char **error)
 {
-  entity_t entity, vts, version;
+  entity_t entity, vts;
+  const char *version;
+  const char *status, *status_text;
 
   if (!connection)
     return 1;
 
-  if (osp_send_command (connection, &entity, "<get_version/>"))
+  if (osp_send_command (connection, &entity, "<get_vts version_only='1'/>"))
     return 1;
 
-  vts = entity_child (entity, "vts");
-  if (!vts)
+  status = entity_attribute (entity, "status");
+
+  if (status != NULL && !strcmp (status, "400"))
     {
-      g_warning ("%s: element VTS missing.", __func__);
+      status_text = entity_attribute (entity, "status_text");
+      g_debug ("%s: %s - %s.", __func__, status, status_text);
+      if (error)
+        *error = g_strdup (status_text);
       free_entity (entity);
       return 1;
     }
 
-  version = entity_child (vts, "version");
-  if (!version)
+  vts = entity_child (entity, "vts");
+  if (!vts)
     {
-      g_warning ("%s: element VERSION missing.", __func__);
+      g_warning ("%s: element VTS missing.", __func__);
       free_entity (entity);
       return 1;
     }
 
+  version = entity_attribute (vts, "vts_version");
+
   if (vts_version)
-    *vts_version = g_strdup (entity_text (version));
+    *vts_version = g_strdup (version);
 
   free_entity (entity);
   return 0;
@@ -410,6 +419,13 @@ osp_get_vts_ext (osp_connection_t *connection, osp_get_vts_opts_t opts,
   if (vts == NULL)
     return 1;
 
+  if (opts.version_only == 1)
+    {
+      if (osp_send_command (connection, vts, "<get_vts version_only='1'/>"))
+        return 1;
+      return 0;
+    }
+
   if (opts.filter)
     {
       if (osp_send_command (connection, vts, "<get_vts filter='%s'/>",

osp/osp.h

@@ -99,14 +99,15 @@ osp_get_version (osp_connection_t *, char **, char **, char **, char **,
                  char **, char **);
 
 int
-osp_get_vts_version (osp_connection_t *, char **);
+osp_get_vts_version (osp_connection_t *, char **, char **error);
 
 int
 osp_get_vts (osp_connection_t *, entity_t *);
 
 typedef struct
 {
-  char *filter; ///< the filter to apply for a vt sub-selection.
+  char *filter;     ///< the filter to apply for a vt sub-selection.
+  int version_only; ///< if get only feed info or the vt collection
 } osp_get_vts_opts_t;
 
 int