src: remove placeholder image in failed image/create

Delete image data after a failed image creation.

src/client.c

@@ -1274,8 +1274,49 @@ static int og_agent_http_response_code(const char *buf)
 	return -1;
 }
 
+static int og_clear_image_placeholder()
+{
+	uint32_t image_id = 0;
+	struct og_dbi *dbi;
+	dbi_result result;
+
+	dbi = og_dbi_open(&ogconfig.db);
+	if (!dbi) {
+		syslog(LOG_ERR, "cannot open connection database (%s:%d)\n",
+		       __func__, __LINE__);
+		return -1;
+	}
+
+	result = dbi_conn_queryf(dbi->conn,
+				"SELECT idimagen FROM imagenes WHERE fechacreacion IS NULL");
+	if (!result) {
+		syslog(LOG_ERR, "failed to query database\n");
+		return -1;
+	}
+
+	if (!dbi_result_next_row(result)) {
+		dbi_result_free(result);
+		og_dbi_close(dbi);
+		return 0;
+	}
+
+	image_id = dbi_result_get_uint(result, "idimagen");
+	dbi_result_free(result);
+
+	syslog(LOG_INFO, "Trying to delete uninitialized image with id %d\n", image_id);
+
+	if (og_dbi_delete_image(dbi, image_id) < 0) {
+		og_dbi_close(dbi);
+		return -1;
+	}
+
+	og_dbi_close(dbi);
+	return 0;
+}
+
 int og_agent_state_process_response(struct og_client *cli)
 {
+	enum og_cmd_type cmd_type = cli->last_cmd;
 	int ret, err = -1, code;
 	json_error_t json_err;
 	bool success;
@@ -1326,6 +1367,9 @@ int og_agent_state_process_response(struct og_client *cli)
 	else
 		cli->last_cmd_result = OG_FAILURE;
 
+	if (!success && cmd_type == OG_CMD_IMAGE_CREATE)
+		og_clear_image_placeholder();
+
 	if (code != 200 && code != 103) {
 		cli->last_cmd_id = 0;
 		return ret;