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73 lines
2.4 KiB
73 lines
2.4 KiB
6 years ago
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/*
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* IP common code
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public License
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* as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with FFmpeg; if not, write to the Free Software * Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVFORMAT_IP_H
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#define AVFORMAT_IP_H
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#include "network.h"
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/**
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* Structure for storing IP (UDP) source filters or block lists.
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*/
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typedef struct IPSourceFilters {
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int nb_include_addrs;
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int nb_exclude_addrs;
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struct sockaddr_storage *include_addrs;
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struct sockaddr_storage *exclude_addrs;
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} IPSourceFilters;
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/**
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* Checks the source address against a given IP source filter.
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* @return 0 if packet should be processed based on the filter, 1 if the packet
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* can be dropped.
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*/
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int ff_ip_check_source_lists(struct sockaddr_storage *source_addr_ptr, IPSourceFilters *s);
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/**
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* Resolves hostname into an addrinfo structure.
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* @return addrinfo structure which should be freed by the user, NULL in case
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* of error.
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*/
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struct addrinfo *ff_ip_resolve_host(void *log_ctx,
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const char *hostname, int port,
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int type, int family, int flags);
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/**
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* Parses the address[,address] source list in buf and adds it to the filters
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* in the IPSourceFilters structure.
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* @return 0 on success, < 0 AVERROR code on error.
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*/
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int ff_ip_parse_sources(void *log_ctx, const char *buf, IPSourceFilters *filters);
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/**
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* Parses the address[,address] source block list in buf and adds it to the
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* filters in the IPSourceFilters structure.
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* @return 0 on success, < 0 AVERROR code on error.
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*/
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int ff_ip_parse_blocks(void *log_ctx, const char *buf, IPSourceFilters *filters);
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/**
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* Resets the IP filter list and frees the internal fields of an
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* IPSourceFilters structure.
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*/
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void ff_ip_reset_filters(IPSourceFilters *filters);
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#endif /* AVFORMAT_IP_H */
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