/*
* IP common code
*
* This file is part of FFmpeg.
*
* FFmpeg 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.
*
* FFmpeg 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 FFmpeg; if not, write to the Free Software * Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVFORMAT_IP_H
#define AVFORMAT_IP_H
#include "network.h"
/**
* Structure for storing IP (UDP) source filters or block lists.
*/
typedef struct IPSourceFilters {
int nb_include_addrs;
int nb_exclude_addrs;
struct sockaddr_storage *include_addrs;
struct sockaddr_storage *exclude_addrs;
} IPSourceFilters;
/**
* Checks the source address against a given IP source filter.
* @return 0 if packet should be processed based on the filter, 1 if the packet
* can be dropped.
*/
int ff_ip_check_source_lists(struct sockaddr_storage *source_addr_ptr, IPSourceFilters *s);
/**
* Resolves hostname into an addrinfo structure.
* @return addrinfo structure which should be freed by the user, NULL in case
* of error.
*/
struct addrinfo *ff_ip_resolve_host(void *log_ctx,
const char *hostname, int port,
int type, int family, int flags);
/**
* Parses the address[,address] source list in buf and adds it to the filters
* in the IPSourceFilters structure.
* @return 0 on success, < 0 AVERROR code on error.
*/
int ff_ip_parse_sources(void *log_ctx, const char *buf, IPSourceFilters *filters);
/**
* Parses the address[,address] source block list in buf and adds it to the
* filters in the IPSourceFilters structure.
* @return 0 on success, < 0 AVERROR code on error.
*/
int ff_ip_parse_blocks(void *log_ctx, const char *buf, IPSourceFilters *filters);
/**
* Resets the IP filter list and frees the internal fields of an
* IPSourceFilters structure.
*/
void ff_ip_reset_filters(IPSourceFilters *filters);
#endif /* AVFORMAT_IP_H */