Add osp_get_performance()

CHANGELOG.md

@@ -14,6 +14,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - Change the default path to the redis socket to /run/redis/redis.sock [#256](https://github.com/greenbone/gvm-libs/pull/256)
 - Handle EAI_AGAIN in gvm_host_reverse_lookup() IPv6 case and function refactor. [#229](https://github.com/greenbone/gvm-libs/pull/229)
 - Prevent g_strsplit to be called with NULL. [#238](https://github.com/greenbone/gvm-libs/pull/238)
+- Add osp_get_performance() function. [#262](https://github.com/greenbone/gvm-libs/pull/262)
 
 ### Fixed
 - Prevent g_strsplit to be called with NULL. [#238](https://github.com/greenbone/gvm-libs/pull/238)

osp/osp.c

@@ -444,6 +444,53 @@ osp_delete_scan (osp_connection_t *connection, const char *scan_id)
   return ret;
 }
 
+/**
+ * @brief Get performance graphics from an OSP server.
+ *
+ * @param[in]   connection  Connection to an OSP server.
+ * @param[in]   opts        Struct containing the options to apply.
+ * @param[out]  graph       Graphic base64 encoded.
+ * @param[out]  error       Pointer to error, if any.
+ *
+ * @return 0 if success, 1 if error.
+ */
+int
+osp_get_performance_ext (osp_connection_t *connection,
+                         osp_get_performance_opts_t opts,
+                         char **graph, char **error)
+{
+  entity_t entity;
+  int rc;
+
+  assert (connection);
+  rc = osp_send_command (connection, &entity,
+                         "<get_performance start='%d' "
+                         "end='%d' titles='%s'/>",
+                         opts.start, opts.end, opts.titles);
+
+  if (rc)
+    {
+      if (error)
+        *error = g_strdup ("Couldn't send get_performance command to scanner");
+      return 1;
+    }
+
+  if (graph && entity_text (entity) && strcmp (entity_text (entity), "\0"))
+      *graph = g_strdup (entity_text (entity));
+  else
+    {
+      const char *text = entity_attribute (entity, "status_text");
+
+      assert (text);
+      if (error)
+        *error = g_strdup (text);
+      free_entity (entity);
+      return 1;
+    }
+
+  free_entity (entity);
+  return 0;
+}
 
 /**
  * @brief Get a scan status from an OSP server

osp/osp.h

@@ -67,6 +67,17 @@ typedef enum
   OSP_SCAN_STATUS_FINISHED,   /**< Finished status. */
 } osp_scan_status_t;
 
+
+typedef struct {
+  const char *scan_id; ///< UUID of the scan which get the status from.
+} osp_get_scan_status_opts_t;
+
+typedef struct {
+  int start;    /**< Start interval. */
+  int end;      /**< End interval. */
+  char *titles; /**< Graph title. */
+} osp_get_performance_opts_t;
+
 typedef struct osp_param osp_param_t;
 
 /* OSP Connection handling */
@@ -123,10 +134,6 @@ osp_get_scan_pop (osp_connection_t *,
                   int,
                   char **);
 
-typedef struct {
-  const char *scan_id; ///< UUID of the scan which get the status from.
-} osp_get_scan_status_opts_t;
-
 osp_scan_status_t
 osp_get_scan_status_ext (osp_connection_t *,
                          osp_get_scan_status_opts_t,
@@ -141,6 +148,13 @@ osp_stop_scan (osp_connection_t *, const char *, char **);
 int
 osp_get_scanner_details (osp_connection_t *, char **, GSList **);
 
+
+int
+osp_get_performance_ext (osp_connection_t *,
+                         osp_get_performance_opts_t,
+                         char **,
+                         char **);
+
 /* OSP scanner parameters handling */
 
 osp_param_t *