/**
 * @file oval_message.c
 * \brief Open Vulnerability and Assessment Language
 *
 * See more details at http://oval.mitre.org/
 */

/*
 * Copyright 2009--2014 Red Hat Inc., Durham, North Carolina.
 * All Rights Reserved.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Authors:
 *      "David Niemoller" <David.Niemoller@g2-inc.com>
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include <stdlib.h>
#include <stdio.h>
#include <string.h>

#include "oval_definitions_impl.h"
#include "oval_agent_api_impl.h"
#include "oval_system_characteristics_impl.h"
#include "adt/oval_collection_impl.h"
#include "common/debug_priv.h"
#include "common/elements.h"

typedef struct oval_message {
	void *model;
	char *text;
	oval_message_level_t level;
} oval_message_t;

struct oval_message *oval_message_new()
{
	oval_message_t *message = (oval_message_t *) oscap_alloc(sizeof(oval_message_t));
	if (message == NULL)
		return NULL;

	message->text = NULL;
	message->level = OVAL_MESSAGE_LEVEL_NONE;
	return message;
}

struct oval_message *oval_message_clone(struct oval_message *old_message)
{
	struct oval_message *new_message = oval_message_new();
	oval_message_level_t level = oval_message_get_level(old_message);
	oval_message_set_level(new_message, level);
	char *text = oval_message_get_text(old_message);
	oval_message_set_text(new_message, oscap_strdup(text));
	return new_message;
}

void oval_message_free(struct oval_message *message)
{
	__attribute__nonnull__(message);

	if (message->text != NULL)
		oscap_free(message->text);

	message->text = NULL;
	oscap_free(message);
}

bool oval_message_iterator_has_more(struct oval_message_iterator *oc_message)
{
	return oval_collection_iterator_has_more((struct oval_iterator *)
						 oc_message);
}

struct oval_message *oval_message_iterator_next(struct oval_message_iterator
						*oc_message)
{
	return (struct oval_message *)
	    oval_collection_iterator_next((struct oval_iterator *)oc_message);
}

void oval_message_iterator_free(struct oval_message_iterator
				*oc_message)
{
	oval_collection_iterator_free((struct oval_iterator *)oc_message);
}

char *oval_message_get_text(struct oval_message *message)
{

	__attribute__nonnull__(message);

	return message->text;
}

oval_message_level_t oval_message_get_level(struct oval_message * message)
{

	__attribute__nonnull__(message);

	return message->level;
}

void oval_message_set_text(struct oval_message *message, char *text)
{
	__attribute__nonnull__(message);
	if (message->text != NULL)
		oscap_free(message->text);
	message->text = (text == NULL) ? NULL : oscap_strdup(text);
}

void oval_message_set_level(struct oval_message *message, oval_message_level_t level)
{
	__attribute__nonnull__(message);
	message->level = level;
}

static void oval_message_parse_tag_consumer(char *text, void *message)
{
	oval_message_set_text(message, text);
}

int oval_message_parse_tag(xmlTextReaderPtr reader, struct oval_parser_context *context, oscap_consumer_func consumer, void *client)
{
	int return_code = 0;
	struct oval_message *message = oval_message_new();
	/* message->level */
	oval_message_set_level(message, oval_message_level_parse(reader, "level", OVAL_MESSAGE_LEVEL_INFO));
	/* message->text */
	return_code = oscap_parser_text_value(reader, &oval_message_parse_tag_consumer, message);

        if (return_code == 0)
		(*consumer) (message, client);

	return return_code;
}

void oval_message_to_dom(struct oval_message *message, xmlDoc * doc, xmlNode * tag_parent)
{

	if (message) {
		xmlNs *ns_syschar = xmlSearchNsByHref(doc, tag_parent, OVAL_SYSCHAR_NAMESPACE);
		xmlNode *tag_message = xmlNewTextChild
		    (tag_parent, ns_syschar, BAD_CAST "message", BAD_CAST oval_message_get_text(message));
		xmlNewProp(tag_message, BAD_CAST "level",
			   BAD_CAST oval_message_level_text(oval_message_get_level(message)));
	}
}
