data.c

			break;
		}

		tmp_provider_child = data_provider_find(provider_child->children,
				node_name, NULL);

		/* release the reference from this child */
		ao2_ref(provider_child, -1);

		provider_child = tmp_provider_child;
	}

	if (!provider_child) {
		ast_log(LOG_ERROR, "Invalid path '%s', '%s' not found.\n",
				tmp_path, node_name);
		return NULL;
	}

	/* generate the search tree. */
	if (query->search) {
		search = data_search_generate(query->search);
		if (search) {
			search_child = data_search_find(search->children,
				provider_child->name);
		}
	}

	/* generate the filter tree. */
	if (query->filter) {
		filter = data_filter_generate(query->filter);
		if (filter) {
			filter_child = data_filter_find(filter->children,
				provider_child->name);
		}
	}

	result = data_result_generate_node(query, provider_child, provider_child->name,
			search_child, filter_child);

	/* release the requested provider. */
	ao2_ref(provider_child, -1);

	/* release the generated search tree. */
	if (search_child) {
		ao2_ref(search_child, -1);
	}

	if (filter_child) {
		ao2_ref(filter_child, -1);
	}

	if (search) {
		data_search_release(search);
	}

	result_filtered = result;

	/* release the generated filter tree. */
	if (filter) {
		data_filter_release(filter);
	}

	return result_filtered;
}

struct ast_data *ast_data_get(const struct ast_data_query *query)
{
	struct ast_data *res;

	/* check compatibility */
	if (!data_structure_compatible(query->version, latest_query_compatible_version,
		current_query_version)) {
		return NULL;
	}

	data_read_lock();
	res = data_result_generate(query, query->path);
	data_unlock();

	if (!res) {
		ast_log(LOG_ERROR, "Unable to get data from %s\n", query->path);
		return NULL;
	}

	return res;
}

#ifdef HAVE_LIBXML2
/*!
 * \internal
 * \brief Helper function to move an ast_data tree to xml.
 * \param[in] parent_data The initial ast_data node to be passed to xml.
 * \param[out] parent_xml The root node to insert the xml.
 */
static void data_get_xml_add_child(struct ast_data *parent_data,
	struct ast_xml_node *parent_xml)
{
	struct ao2_iterator i;
	struct ast_data *node;
	struct ast_xml_node *child_xml;
	char node_content[256];

	i = ao2_iterator_init(parent_data->children, 0);
	while ((node = ao2_iterator_next(&i))) {
		child_xml = ast_xml_new_node(node->name);
		if (!child_xml) {
			ao2_ref(node, -1);
			continue;
		}

		switch (node->type) {
		case AST_DATA_CONTAINER:
			data_get_xml_add_child(node, child_xml);
			break;
		case AST_DATA_PASSWORD:
			ast_xml_set_text(child_xml, node->payload.str);
			break;
		case AST_DATA_TIMESTAMP:
			snprintf(node_content, sizeof(node_content), "%u",
				node->payload.uint);
			ast_xml_set_text(child_xml, node_content);
			break;
		case AST_DATA_SECONDS:
			snprintf(node_content, sizeof(node_content), "%u",
				node->payload.uint);
			ast_xml_set_text(child_xml, node_content);
			break;
		case AST_DATA_MILLISECONDS:
			snprintf(node_content, sizeof(node_content), "%u",
				node->payload.uint);
			ast_xml_set_text(child_xml, node_content);
			break;
		case AST_DATA_STRING:
			ast_xml_set_text(child_xml, node->payload.str);
			break;
		case AST_DATA_CHARACTER:
			snprintf(node_content, sizeof(node_content), "%c",
				node->payload.character);
			ast_xml_set_text(child_xml, node_content);
			break;
		case AST_DATA_INTEGER:
			snprintf(node_content, sizeof(node_content), "%d",
				node->payload.sint);
			ast_xml_set_text(child_xml, node_content);
			break;
		case AST_DATA_UNSIGNED_INTEGER:
			snprintf(node_content, sizeof(node_content), "%u",
				node->payload.uint);
			ast_xml_set_text(child_xml, node_content);
			break;
		case AST_DATA_DOUBLE:
			snprintf(node_content, sizeof(node_content), "%f",
				node->payload.dbl);
			ast_xml_set_text(child_xml, node_content);
			break;
		case AST_DATA_BOOLEAN:
			if (node->payload.boolean) {
				ast_xml_set_text(child_xml, "true");
			} else {
				ast_xml_set_text(child_xml, "false");
			}
			break;
		case AST_DATA_POINTER:
			snprintf(node_content, sizeof(node_content), "%p",
				node->payload.ptr);
			ast_xml_set_text(child_xml, node_content);
			break;
		case AST_DATA_IPADDR:
			snprintf(node_content, sizeof(node_content), "%s",
				ast_inet_ntoa(node->payload.ipaddr));
			ast_xml_set_text(child_xml, node_content);
			break;
		}
		ast_xml_add_child(parent_xml, child_xml);

		ao2_ref(node, -1);
	}
	ao2_iterator_destroy(&i);

}

struct ast_xml_doc *ast_data_get_xml(const struct ast_data_query *query)
{
	struct ast_xml_doc *doc;
	struct ast_xml_node *root;
	struct ast_data *res;

	res = ast_data_get(query);
	if (!res) {
		return NULL;
	}

	doc = ast_xml_new();
	if (!doc) {
		ast_data_free(res);
		return NULL;
	}

	root = ast_xml_new_node(res->name);
	if (!root) {
		ast_xml_close(doc);
	}

	ast_xml_set_root(doc, root);

	data_get_xml_add_child(res, root);

	ast_data_free(res);

	return doc;
}
#endif

enum ast_data_type ast_data_retrieve_type(struct ast_data *node, const char *path)
{
	struct ast_data *internal;

	internal = data_result_get_node(node, path);
	if (!internal) {
		return -1;
	}

	return internal->type;
}

char *ast_data_retrieve_name(struct ast_data *node)
{
	return node->name;
}

/*!
 * \internal
 * \brief Insert a child node inside a passed parent node.
 * \param root Where we are going to insert the child node.
 * \param name The name of the child node to add.
 * \param type The type of content inside the child node.
 * \param ptr The actual content of the child node.
 * \retval NULL on error.
 * \retval non-NULL The added child node pointer.
 */
static struct ast_data *__ast_data_add(struct ast_data *root, const char *name,
	enum ast_data_type type, void *ptr)
{
	struct ast_data *node;
	struct data_filter *filter, *filter_child = NULL;

	if (!root || !root->children) {
		/* invalid data result node. */
		return NULL;
	}

	/* check if we need to add this node, based on the filter. */
	if (root->filter) {
		filter = data_filter_find(root->filter->children, name);
		if (!filter) {
			return NULL;
		}
		ao2_ref(filter, -1);
	}

	node = data_result_create(name);
	if (!node) {
		return NULL;
	}

	node->type = type;

	switch (type) {
	case AST_DATA_BOOLEAN:
		node->payload.boolean = *(unsigned int *) ptr;
		break;
	case AST_DATA_INTEGER:
		node->payload.sint = *(int *) ptr;
		break;
	case AST_DATA_TIMESTAMP:
	case AST_DATA_SECONDS:
	case AST_DATA_MILLISECONDS:
	case AST_DATA_UNSIGNED_INTEGER:
		node->payload.uint = *(unsigned int *) ptr;
		break;
	case AST_DATA_DOUBLE:
		node->payload.dbl = *(double *) ptr;
		break;
	case AST_DATA_PASSWORD:
	case AST_DATA_STRING:
		node->payload.str = (char *) ptr;
		break;
	case AST_DATA_CHARACTER:
		node->payload.character = *(char *) ptr;
		break;
	case AST_DATA_POINTER:
		node->payload.ptr = ptr;
		break;
	case AST_DATA_IPADDR:
		node->payload.ipaddr = *(struct in_addr *) ptr;
		break;
	case AST_DATA_CONTAINER:
		if (root->filter) {
			filter_child = data_filter_find(root->filter->children, name);
			if (filter_child) {
				/* do not increment the refcount because it is not neccesary. */
				ao2_ref(filter_child, -1);
			}
		}
		node->filter = filter_child;
		break;
	default:
		break;
	}

	data_result_add_child(root, node);

	ao2_ref(node, -1);

	return node;
}

struct ast_data *ast_data_add_node(struct ast_data *root, const char *name)
{
	return __ast_data_add(root, name, AST_DATA_CONTAINER, NULL);
}

struct ast_data *ast_data_add_int(struct ast_data *root, const char *name, int value)
{
	return __ast_data_add(root, name, AST_DATA_INTEGER, &value);
}

struct ast_data *ast_data_add_char(struct ast_data *root, const char *name, char value)
{
	return __ast_data_add(root, name, AST_DATA_CHARACTER, &value);
}

struct ast_data *ast_data_add_uint(struct ast_data *root, const char *name,
	unsigned int value)
{
	return __ast_data_add(root, name, AST_DATA_UNSIGNED_INTEGER, &value);
}

struct ast_data *ast_data_add_dbl(struct ast_data *root, const char *childname,
	double dbl)
{
	return __ast_data_add(root, childname, AST_DATA_DOUBLE, &dbl);
}

struct ast_data *ast_data_add_bool(struct ast_data *root, const char *childname,
	unsigned int boolean)
{
	return __ast_data_add(root, childname, AST_DATA_BOOLEAN, &boolean);
}

struct ast_data *ast_data_add_ipaddr(struct ast_data *root, const char *childname,
	struct in_addr addr)
{
	return __ast_data_add(root, childname, AST_DATA_IPADDR, &addr);
}

struct ast_data *ast_data_add_ptr(struct ast_data *root, const char *childname,
	void *ptr)
{
	return __ast_data_add(root, childname, AST_DATA_POINTER, ptr);
}

struct ast_data *ast_data_add_timestamp(struct ast_data *root, const char *childname,
	unsigned int timestamp)
{
	return __ast_data_add(root, childname, AST_DATA_TIMESTAMP, &timestamp);
}

struct ast_data *ast_data_add_seconds(struct ast_data *root, const char *childname,
	unsigned int seconds)
{
	return __ast_data_add(root, childname, AST_DATA_SECONDS, &seconds);
}

struct ast_data *ast_data_add_milliseconds(struct ast_data *root, const char *childname,
	unsigned int milliseconds)
{
	return __ast_data_add(root, childname, AST_DATA_MILLISECONDS, &milliseconds);
}

struct ast_data *ast_data_add_password(struct ast_data *root, const char *childname,
	const char *value)
{
	char *name;
	size_t namelen = 1 + (ast_strlen_zero(value) ? 0 : strlen(value));
	struct ast_data *res;

	if (!(name = ast_malloc(namelen))) {
		return NULL;
	}

	strcpy(name, (ast_strlen_zero(value) ? "" : value));

	res = __ast_data_add(root, childname, AST_DATA_PASSWORD, name);
	if (!res) {
		ast_free(name);
	}

	return res;
}

struct ast_data *ast_data_add_str(struct ast_data *root, const char *childname,
	const char *value)
{
	char *name;
	size_t namelen = 1 + (ast_strlen_zero(value) ? 0 : strlen(value));
	struct ast_data *res;

	if (!(name = ast_malloc(namelen))) {
		return NULL;
	}

	strcpy(name, (ast_strlen_zero(value) ? "" : value));

	res = __ast_data_add(root, childname, AST_DATA_STRING, name);
	if (!res) {
		ast_free(name);
	}

	return res;
}

int __ast_data_add_structure(struct ast_data *root,
	const struct ast_data_mapping_structure *mapping, size_t mapping_len,
	void *structure)
{
	int i;

	for (i = 0; i < mapping_len; i++) {
		switch (mapping[i].type) {
		case AST_DATA_INTEGER:
			ast_data_add_int(root, mapping[i].name,
				mapping[i].get.AST_DATA_INTEGER(structure));
			break;
		case AST_DATA_UNSIGNED_INTEGER:
			ast_data_add_uint(root, mapping[i].name,
				mapping[i].get.AST_DATA_UNSIGNED_INTEGER(structure));
			break;
		case AST_DATA_DOUBLE:
			ast_data_add_dbl(root, mapping[i].name,
				mapping[i].get.AST_DATA_DOUBLE(structure));
			break;
		case AST_DATA_BOOLEAN:
			ast_data_add_bool(root, mapping[i].name,
				mapping[i].get.AST_DATA_BOOLEAN(structure));
			break;
		case AST_DATA_PASSWORD:
			ast_data_add_password(root, mapping[i].name,
				mapping[i].get.AST_DATA_PASSWORD(structure));
			break;
		case AST_DATA_TIMESTAMP:
			ast_data_add_timestamp(root, mapping[i].name,
				mapping[i].get.AST_DATA_TIMESTAMP(structure));
			break;
		case AST_DATA_SECONDS:
			ast_data_add_seconds(root, mapping[i].name,
				mapping[i].get.AST_DATA_SECONDS(structure));
			break;
		case AST_DATA_MILLISECONDS:
			ast_data_add_milliseconds(root, mapping[i].name,
				mapping[i].get.AST_DATA_MILLISECONDS(structure));
			break;
		case AST_DATA_STRING:
			ast_data_add_str(root, mapping[i].name,
				mapping[i].get.AST_DATA_STRING(structure));
			break;
		case AST_DATA_CHARACTER:
			ast_data_add_char(root, mapping[i].name,
				mapping[i].get.AST_DATA_CHARACTER(structure));
			break;
		case AST_DATA_CONTAINER:
			break;
		case AST_DATA_IPADDR:
			ast_data_add_ipaddr(root, mapping[i].name,
				mapping[i].get.AST_DATA_IPADDR(structure));
			break;
		case AST_DATA_POINTER:
			ast_data_add_ptr(root, mapping[i].name,
				mapping[i].get.AST_DATA_POINTER(structure));
			break;
		}
	}

	return 0;
}

void ast_data_remove_node(struct ast_data *root, struct ast_data *child)
{
	ao2_unlink(root->children, child);
}

void ast_data_free(struct ast_data *root)
{
	/* destroy it, this will destroy all the internal nodes. */
	ao2_ref(root, -1);
}

struct ast_data_iterator *ast_data_iterator_init(struct ast_data *tree,
	const char *elements)
{
	struct ast_data_iterator *iterator;
	struct ao2_iterator i;
	struct ast_data *internal = tree;
	char *path, *ptr = NULL;

	if (!elements) {
		return NULL;
	}

	/* tree is the node we want to use to iterate? or we are going
	 * to iterate thow an internal node? */
	path = ast_strdupa(elements);

	ptr = strrchr(path, '/');
	if (ptr) {
		*ptr = '\0';
		internal = data_result_get_node(tree, path);
		if (!internal) {
			return NULL;
		}
	}

	iterator = ast_calloc(1, sizeof(*iterator));
	if (!iterator) {
		return NULL;
	}

	i = ao2_iterator_init(internal->children, 0);

	iterator->pattern = (ptr ? strrchr(elements, '/') + 1 : elements);

	/* is the last node a regular expression?, compile it! */
	if (!regcomp(&(iterator->regex_pattern), iterator->pattern,
			REG_EXTENDED | REG_NOSUB | REG_ICASE)) {
		iterator->is_pattern = 1;
	}

	iterator->internal_iterator = i;

	return iterator;
}

void ast_data_iterator_end(struct ast_data_iterator *iterator)
{
	/* decrement the reference counter. */
	if (iterator->last) {
		ao2_ref(iterator->last, -1);
	}

	/* release the generated pattern. */
	if (iterator->is_pattern) {
		regfree(&(iterator->regex_pattern));
	}

	ao2_iterator_destroy(&(iterator->internal_iterator));

	ast_free(iterator);
	iterator = NULL;
}

struct ast_data *ast_data_iterator_next(struct ast_data_iterator *iterator)
{
	struct ast_data *res;

	if (iterator->last) {
		/* release the last retrieved node reference. */
		ao2_ref(iterator->last, -1);
	}

	while ((res = ao2_iterator_next(&iterator->internal_iterator))) {
		/* if there is no node name pattern specified, return
		 * the next node. */
		if (!iterator->pattern) {
			break;
		}

		/* if the pattern is a regular expression, check if this node
		 * matches. */
		if (iterator->is_pattern && !regexec(&(iterator->regex_pattern),
			res->name, 0, NULL, 0)) {
			break;
		}

		/* if there is a pattern specified, check if this node matches
		 * the wanted node names. */
		if (!iterator->is_pattern && (iterator->pattern &&
				!strcasecmp(res->name, iterator->pattern))) {
			break;
		}

		ao2_ref(res, -1);
	}

	iterator->last = res;

	return res;
}

int ast_data_retrieve(struct ast_data *tree, const char *path,
	struct ast_data_retrieve *content)
{
	struct ast_data *node;

	if (!content) {
		return -1;
	}

	node = data_result_get_node(tree, path);
	if (!node) {
		ast_log(LOG_ERROR, "Invalid internal node %s\n", path);
		return -1;
	}

	content->type = node->type;
	switch (node->type) {
	case AST_DATA_STRING:
		content->value.AST_DATA_STRING = node->payload.str;
		break;
	case AST_DATA_PASSWORD:
		content->value.AST_DATA_PASSWORD = node->payload.str;
		break;
	case AST_DATA_TIMESTAMP:
		content->value.AST_DATA_TIMESTAMP = node->payload.uint;
		break;
	case AST_DATA_SECONDS:
		content->value.AST_DATA_SECONDS = node->payload.uint;
		break;
	case AST_DATA_MILLISECONDS:
		content->value.AST_DATA_MILLISECONDS = node->payload.uint;
		break;
	case AST_DATA_CHARACTER:
		content->value.AST_DATA_CHARACTER = node->payload.character;
		break;
	case AST_DATA_INTEGER:
		content->value.AST_DATA_INTEGER = node->payload.sint;
		break;
	case AST_DATA_UNSIGNED_INTEGER:
		content->value.AST_DATA_UNSIGNED_INTEGER = node->payload.uint;
		break;
	case AST_DATA_BOOLEAN:
		content->value.AST_DATA_BOOLEAN = node->payload.boolean;
		break;
	case AST_DATA_IPADDR:
		content->value.AST_DATA_IPADDR = node->payload.ipaddr;
		break;
	case AST_DATA_DOUBLE:
		content->value.AST_DATA_DOUBLE = node->payload.dbl;
		break;
	case AST_DATA_CONTAINER:
		break;
	case AST_DATA_POINTER:
		content->value.AST_DATA_POINTER = node->payload.ptr;
		break;
	}

	return 0;
}

/*!
 * \internal
 * \brief One color for each node type.
 */
static const struct {
	enum ast_data_type type;
	int color;
} data_result_color[] = {
	{ AST_DATA_STRING, COLOR_BLUE },
	{ AST_DATA_PASSWORD, COLOR_BRBLUE },
	{ AST_DATA_TIMESTAMP, COLOR_CYAN },
	{ AST_DATA_SECONDS, COLOR_MAGENTA },
	{ AST_DATA_MILLISECONDS, COLOR_BRMAGENTA },
	{ AST_DATA_CHARACTER, COLOR_GRAY },
	{ AST_DATA_INTEGER, COLOR_RED },
	{ AST_DATA_UNSIGNED_INTEGER, COLOR_RED },
	{ AST_DATA_DOUBLE, COLOR_RED },
	{ AST_DATA_BOOLEAN, COLOR_BRRED },
	{ AST_DATA_CONTAINER, COLOR_GREEN },
	{ AST_DATA_IPADDR, COLOR_BROWN },
	{ AST_DATA_POINTER, COLOR_YELLOW },
};

/*!
 * \internal
 * \brief Get the color configured for a specific node type.
 * \param[in] type The node type.
 * \returns The color specified for the passed type.
 */
static int data_result_get_color(enum ast_data_type type)
{
	int i;
	for (i = 0; i < ARRAY_LEN(data_result_color); i++) {
		if (data_result_color[i].type == type) {
			return data_result_color[i].color;
		}
	}

	return COLOR_BLUE;
}

/*!
 * \internal
 * \brief Print a node to the CLI.
 * \param[in] fd The CLI file descriptor.
 * \param[in] node The node to print.
 * \param[in] depth The actual node depth in the tree.
 */
static void data_result_print_cli_node(int fd, const struct ast_data *node, uint32_t depth)
{
	int i;
	struct ast_str *tabs, *output;

	tabs = ast_str_create(depth * 10 + 1);
	if (!tabs) {
		return;
	}
	ast_str_reset(tabs);
	for (i = 0; i < depth; i++) {
		ast_str_append(&tabs, 0, "  ");
	}

	output = ast_str_create(20);
	if (!output) {
		ast_free(tabs);
		return;
	}

	ast_str_reset(output);
	ast_term_color_code(&output, data_result_get_color(node->type), 0);

	switch (node->type) {
	case AST_DATA_POINTER:
		ast_str_append(&output, 0, "%s%s: %p\n", ast_str_buffer(tabs),
				node->name, node->payload.ptr);
		break;
	case AST_DATA_PASSWORD:
		ast_str_append(&output, 0, "%s%s: \"%s\"\n",
				ast_str_buffer(tabs),
				node->name,
				node->payload.str);
		break;
	case AST_DATA_STRING:
		ast_str_append(&output, 0, "%s%s: \"%s\"\n",
				ast_str_buffer(tabs),
				node->name,
				node->payload.str);
		break;
	case AST_DATA_CHARACTER:
		ast_str_append(&output, 0, "%s%s: \'%c\'\n",
				ast_str_buffer(tabs),
				node->name,
				node->payload.character);
		break;
	case AST_DATA_CONTAINER:
		ast_str_append(&output, 0, "%s%s\n", ast_str_buffer(tabs),
				node->name);
		break;
	case AST_DATA_TIMESTAMP:
		ast_str_append(&output, 0, "%s%s: %u\n", ast_str_buffer(tabs),
				node->name,
				node->payload.uint);
		break;
	case AST_DATA_SECONDS:
		ast_str_append(&output, 0, "%s%s: %u\n", ast_str_buffer(tabs),
				node->name,
				node->payload.uint);
		break;
	case AST_DATA_MILLISECONDS:
		ast_str_append(&output, 0, "%s%s: %u\n", ast_str_buffer(tabs),
				node->name,
				node->payload.uint);
		break;
	case AST_DATA_INTEGER:
		ast_str_append(&output, 0, "%s%s: %d\n", ast_str_buffer(tabs),
				node->name,
				node->payload.sint);
		break;
	case AST_DATA_UNSIGNED_INTEGER:
		ast_str_append(&output, 0, "%s%s: %u\n", ast_str_buffer(tabs),
				node->name,
				node->payload.uint);
		break;
	case AST_DATA_DOUBLE:
		ast_str_append(&output, 0, "%s%s: %lf\n", ast_str_buffer(tabs),
				node->name,
				node->payload.dbl);
		break;
	case AST_DATA_BOOLEAN:
		ast_str_append(&output, 0, "%s%s: %s\n", ast_str_buffer(tabs),
				node->name,
				((node->payload.boolean) ? "True" : "False"));
		break;
	case AST_DATA_IPADDR:
		ast_str_append(&output, 0, "%s%s: %s\n", ast_str_buffer(tabs),
				node->name,
				ast_inet_ntoa(node->payload.ipaddr));
		break;
	}

	ast_free(tabs);

	ast_term_color_code(&output, 0, 0);

	ast_cli(fd, "%s", ast_str_buffer(output));

	ast_free(output);

	if (node->type == AST_DATA_CONTAINER) {
		__data_result_print_cli(fd, node, depth + 1);
	}
}

/*!
 * \internal
 * \brief Print out an ast_data tree to the CLI.
 * \param[in] fd The CLI file descriptor.
 * \param[in] root The root node of the tree.
 * \param[in] depth Actual depth.
 */

static void __data_result_print_cli(int fd, const struct ast_data *root, uint32_t depth)
{
	struct ao2_iterator iter;
	struct ast_data *node;

	if (root->type == AST_DATA_CONTAINER) {
		iter = ao2_iterator_init(root->children, 0);
		while ((node = ao2_iterator_next(&iter))) {
			data_result_print_cli_node(fd, node, depth + 1);
			ao2_ref(node, -1);
		}
		ao2_iterator_destroy(&iter);
	} else {
		data_result_print_cli_node(fd, root, depth);
	}
}

/*!
 * \internal
 * \brief
 * \param[in] fd The CLI file descriptor.
 * \param[in] root The root node of the tree.
 */
static void data_result_print_cli(int fd, const struct ast_data *root)
{
	ast_cli(fd, COLORIZE_FMT "\n", COLORIZE(data_result_get_color(root->type), 0, root->name));

	__data_result_print_cli(fd, root, 0);

	ast_cli(fd, "\n");
}

/*!
 * \internal
 * \brief Handle the CLI command "data get".
 */
static char *handle_cli_data_get(struct ast_cli_entry *e, int cmd,
		struct ast_cli_args *a)
{
	struct ast_data_query query = {
		.version = AST_DATA_QUERY_VERSION
	};
	struct ast_data *tree;

	switch (cmd) {
	case CLI_INIT:
		e->command = "data get";
		e->usage = ""
			"Usage: data get <path> [<search> [<filter>]]\n"
			"       Get the tree based on a path.\n";
		return NULL;
	case CLI_GENERATE:
		return NULL;
	}

	if (a->argc < e->args + 1) {
		return CLI_SHOWUSAGE;
	}

	query.path = (char *) a->argv[e->args];

	if (a->argc > e->args + 1) {
		query.search = (char *) a->argv[e->args + 1];
	}

	if (a->argc > e->args + 2) {
		query.filter = (char *) a->argv[e->args + 2];
	}

	tree = ast_data_get(&query);
	if (!tree) {
		return CLI_FAILURE;
	}

	data_result_print_cli(a->fd, tree);

	ast_data_free(tree);

	return CLI_SUCCESS;
}

/*!
 * \internal
 * \brief Print the list of data providers.
 * \param[in] fd The CLI file descriptor.
 * \param[in] name The last node visited name.
 * \param[in] container The childrens of the last node.
 * \param[in] path The path to the current node.
 */
static void data_provider_print_cli(int fd, const char *name,
	struct ao2_container *container, struct ast_str *path)
{
	struct ao2_iterator i;
	struct ast_str *current_path;
	struct data_provider *provider;

	current_path = ast_str_create(60);
	if (!current_path) {
		return;
	}

	ast_str_reset(current_path);
	if (path) {
		ast_str_set(&current_path, 0, "%s/%s", ast_str_buffer(path), name);
	} else {
		ast_str_set(&current_path, 0, "%s", name);
	}

	i = ao2_iterator_init(container, 0);
	while ((provider = ao2_iterator_next(&i))) {
		if (provider->handler) {
			/* terminal node, print it. */
			ast_cli(fd, "%s/%s (", ast_str_buffer(current_path),
				provider->name);
			if (provider->handler->get) {
				ast_cli(fd, "get");
			}
			ast_cli(fd, ") [%s]\n", provider->registrar);
		}
		data_provider_print_cli(fd, provider->name, provider->children,
			current_path);
		ao2_ref(provider, -1);
	}
	ao2_iterator_destroy(&i);

	ast_free(current_path);
}

/*!
 * \internal
 * \brief Handle CLI command "data show providers"
 */
static char *handle_cli_data_show_providers(struct ast_cli_entry *e, int cmd,
		struct ast_cli_args *a)
{
	switch (cmd) {
	case CLI_INIT:
		e->command = "data show providers";
		e->usage = ""
			"Usage: data show providers\n"
			"       Show the list of registered providers\n";
		return NULL;
	case CLI_GENERATE:
		return NULL;
	}

	data_read_lock();
	data_provider_print_cli(a->fd, "", root_data.container, NULL);
	data_unlock();

	return CLI_SUCCESS;
}

/*!
 * \internal
 * \brief Data API CLI commands.
 */
static struct ast_cli_entry cli_data[] = {
	AST_CLI_DEFINE(handle_cli_data_get, "Data API get"),
	AST_CLI_DEFINE(handle_cli_data_show_providers, "Show data providers")
};

/*!
 * \internal
 * \brief Output a tree to the AMI.
 * \param[in] s AMI session.
 * \param[in] name The root node name.
 * \param[in] container The root container.
 * \param[in] path The current path.
 */
static void data_result_manager_output(struct mansession *s, const char *name,
	struct ao2_container *container, struct ast_str *path, int id)
{
	struct ao2_iterator i;
	struct ast_str *current_path;
	struct ast_data *node;
	int current_id = id;

	current_path = ast_str_create(60);
	if (!current_path) {
		return;