| Marton Balint | 45fa756 | 2018-09-12 22:46:09 | [diff] [blame] | 1 | /* |
| 2 | * IP common code |
| 3 | * |
| 4 | * This file is part of FFmpeg. |
| 5 | * |
| 6 | * FFmpeg is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU Lesser General Public License |
| 8 | * as published by the Free Software Foundation; either |
| 9 | * version 2.1 of the License, or (at your option) any later version. |
| 10 | * |
| 11 | * FFmpeg is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU Lesser General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU Lesser General Public License |
| 17 | * along with FFmpeg; if not, write to the Free Software * Foundation, Inc., |
| 18 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 19 | */ |
| 20 | |
| 21 | #ifndef AVFORMAT_IP_H |
| 22 | #define AVFORMAT_IP_H |
| 23 | |
| 24 | #include "network.h" |
| 25 | |
| 26 | /** |
| 27 | * Structure for storing IP (UDP) source filters or block lists. |
| 28 | */ |
| 29 | typedef struct IPSourceFilters { |
| 30 | int nb_include_addrs; |
| 31 | int nb_exclude_addrs; |
| 32 | struct sockaddr_storage *include_addrs; |
| 33 | struct sockaddr_storage *exclude_addrs; |
| 34 | } IPSourceFilters; |
| 35 | |
| 36 | /** |
| 37 | * Checks the source address against a given IP source filter. |
| 38 | * @return 0 if packet should be processed based on the filter, 1 if the packet |
| 39 | * can be dropped. |
| 40 | */ |
| 41 | int ff_ip_check_source_lists(struct sockaddr_storage *source_addr_ptr, IPSourceFilters *s); |
| 42 | |
| 43 | /** |
| 44 | * Resolves hostname into an addrinfo structure. |
| 45 | * @return addrinfo structure which should be freed by the user, NULL in case |
| 46 | * of error. |
| 47 | */ |
| 48 | struct addrinfo *ff_ip_resolve_host(void *log_ctx, |
| 49 | const char *hostname, int port, |
| 50 | int type, int family, int flags); |
| 51 | |
| 52 | /** |
| 53 | * Parses the address[,address] source list in buf and adds it to the filters |
| 54 | * in the IPSourceFilters structure. |
| 55 | * @return 0 on success, < 0 AVERROR code on error. |
| 56 | */ |
| 57 | int ff_ip_parse_sources(void *log_ctx, const char *buf, IPSourceFilters *filters); |
| 58 | |
| 59 | /** |
| 60 | * Parses the address[,address] source block list in buf and adds it to the |
| 61 | * filters in the IPSourceFilters structure. |
| 62 | * @return 0 on success, < 0 AVERROR code on error. |
| 63 | */ |
| 64 | int ff_ip_parse_blocks(void *log_ctx, const char *buf, IPSourceFilters *filters); |
| 65 | |
| 66 | /** |
| 67 | * Resets the IP filter list and frees the internal fields of an |
| 68 | * IPSourceFilters structure. |
| 69 | */ |
| 70 | void ff_ip_reset_filters(IPSourceFilters *filters); |
| 71 | |
| 72 | #endif /* AVFORMAT_IP_H */ |
