libyang-issue2.c

#include <stdlib.h>
#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <err.h>
#include <assert.h>
#include <arpa/inet.h>
#include <stdbool.h>

#include <libyang/libyang.h>

static struct ly_ctx *ctx;
static struct lyd_node *running;

static void print(struct lyd_node *config)
{
	struct ly_set *set;

	printf("===========================================\n");
	printf("CONFIG:\n");
	printf("===========================================\n");
	lyd_print_fd(2, config, LYD_JSON, LYP_FORMAT | LYP_WD_ALL);

	set = lyd_find_path(running, "//*");
	if (set == NULL)
		errx(1, "lyd_find_path");

	printf("Nodes: total(%u)\n", set->number);
	for (size_t i = 0; i < set->number; i++) {
		struct lyd_node *node = set->set.d[0];
		printf(" %s\n", lyd_path(node)); /* memleak */
	}
}

static void validate(struct lyd_node *config)
{
	printf("===========================================\n");
	printf("VALIDATING\n");
	printf("===========================================\n");

	if (lyd_validate(&config, LYD_OPT_CONFIG, ctx) != 0)
		errx(1, "lyd_validate");
}

int main(int argc, char **argv)
{
	const struct lys_module *module;
	struct lyd_node *node;
	struct ly_set *set;
	const char *xpath = "/frr-ripd:ripd/instance";

	/* initialization */
	ctx = ly_ctx_new(NULL, 0);
	if (!ctx)
		errx(1, "ly_ctx_new");

	ly_ctx_set_searchdir(ctx, "/usr/local/share/yang/");
	module = lys_parse_path(ctx, "/usr/local/share/yang/frr-ripd.yang",
				LYS_IN_YANG);
	if (!module)
		errx(1, "lys_parse_path");

	running = lyd_new(NULL, module, "ripd");

	printf("===========================================\n");
	printf("ADDING CONTAINER:\n");
	printf("===========================================\n");

	ly_errno = 0;
	node = lyd_new_path(running, ctx, xpath, NULL, 0, LYD_PATH_OPT_UPDATE);
	if (node == NULL && ly_errno)
		errx(1, "lyd_new_path");

	print(running);
	validate(running);
	print(running);

	printf("===========================================\n");
	printf("DELETING CONTAINER:\n");
	printf("===========================================\n");

	set = lyd_find_path(running, xpath);
	if (set == NULL || set->number != 1)
		errx(1, "lyd_find_path");
	node = set->set.d[0];
	ly_set_free(set);
	lyd_free(node);
	//lyd_free_withsiblings(node);
	//lyd_unlink(node);

	print(running);
	validate(running);
	print(running);

	/* cleanup */
	lyd_free_withsiblings(running);
	ly_ctx_remove_module(module, NULL);
	ly_ctx_destroy(ctx, NULL);

	return 0;
}