aboutsummaryrefslogtreecommitdiffstats
path: root/libavformat/network.h
blob: 881384c943dbdf8128e6cf632149a66feca5dfaa (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
/*
 * Copyright (c) 2007 The Libav Project
 *
 * This file is part of Libav.
 *
 * Libav 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.
 *
 * Libav 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 Libav; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#ifndef AVFORMAT_NETWORK_H
#define AVFORMAT_NETWORK_H

#include "config.h"
#include "os_support.h"

#if HAVE_WINSOCK2_H
#include <winsock2.h>
#include <ws2tcpip.h>

#define EPROTONOSUPPORT WSAEPROTONOSUPPORT
#define ETIMEDOUT       WSAETIMEDOUT
#define ECONNREFUSED    WSAECONNREFUSED
#define EINPROGRESS     WSAEINPROGRESS

static inline int ff_neterrno() {
    int err = WSAGetLastError();
    switch (err) {
    case WSAEWOULDBLOCK:
        return AVERROR(EAGAIN);
    case WSAEINTR:
        return AVERROR(EINTR);
    }
    return -err;
}
#else
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netdb.h>

#define ff_neterrno() AVERROR(errno)
#endif

#if HAVE_ARPA_INET_H
#include <arpa/inet.h>
#endif

#if HAVE_POLL_H
#include <poll.h>
#endif

int ff_socket_nonblock(int socket, int enable);

static inline int ff_network_init(void)
{
#if HAVE_WINSOCK2_H
    WSADATA wsaData;
    if (WSAStartup(MAKEWORD(1,1), &wsaData))
        return 0;
#endif
    return 1;
}

static inline int ff_network_wait_fd(int fd, int write)
{
    int ev = write ? POLLOUT : POLLIN;
    struct pollfd p = { .fd = fd, .events = ev, .revents = 0 };
    int ret;
    ret = poll(&p, 1, 100);
    return ret < 0 ? ff_neterrno() : p.revents & (ev | POLLERR | POLLHUP) ? 0 : AVERROR(EAGAIN);
}

static inline void ff_network_close(void)
{
#if HAVE_WINSOCK2_H
    WSACleanup();
#endif
}

int ff_inet_aton (const char * str, struct in_addr * add);

#if !HAVE_STRUCT_SOCKADDR_STORAGE
struct sockaddr_storage {
#if HAVE_STRUCT_SOCKADDR_SA_LEN
    uint8_t ss_len;
    uint8_t ss_family;
#else
    uint16_t ss_family;
#endif
    char ss_pad1[6];
    int64_t ss_align;
    char ss_pad2[112];
};
#endif

#if !HAVE_STRUCT_ADDRINFO
struct addrinfo {
    int ai_flags;
    int ai_family;
    int ai_socktype;
    int ai_protocol;
    int ai_addrlen;
    struct sockaddr *ai_addr;
    char *ai_canonname;
    struct addrinfo *ai_next;
};
#endif

/* getaddrinfo constants */
#ifndef EAI_FAIL
#define EAI_FAIL 4
#endif

#ifndef EAI_FAMILY
#define EAI_FAMILY 5
#endif

#ifndef EAI_NONAME
#define EAI_NONAME 8
#endif

#ifndef AI_PASSIVE
#define AI_PASSIVE 1
#endif

#ifndef AI_CANONNAME
#define AI_CANONNAME 2
#endif

#ifndef AI_NUMERICHOST
#define AI_NUMERICHOST 4
#endif

#ifndef NI_NOFQDN
#define NI_NOFQDN 1
#endif

#ifndef NI_NUMERICHOST
#define NI_NUMERICHOST 2
#endif

#ifndef NI_NAMERQD
#define NI_NAMERQD 4
#endif

#ifndef NI_NUMERICSERV
#define NI_NUMERICSERV 8
#endif

#ifndef NI_DGRAM
#define NI_DGRAM 16
#endif

#if !HAVE_GETADDRINFO
int ff_getaddrinfo(const char *node, const char *service,
                   const struct addrinfo *hints, struct addrinfo **res);
void ff_freeaddrinfo(struct addrinfo *res);
int ff_getnameinfo(const struct sockaddr *sa, int salen,
                   char *host, int hostlen,
                   char *serv, int servlen, int flags);
const char *ff_gai_strerror(int ecode);
#define getaddrinfo ff_getaddrinfo
#define freeaddrinfo ff_freeaddrinfo
#define getnameinfo ff_getnameinfo
#define gai_strerror ff_gai_strerror
#endif

#ifndef INET6_ADDRSTRLEN
#define INET6_ADDRSTRLEN INET_ADDRSTRLEN
#endif

#ifndef IN_MULTICAST
#define IN_MULTICAST(a) ((((uint32_t)(a)) & 0xf0000000) == 0xe0000000)
#endif
#ifndef IN6_IS_ADDR_MULTICAST
#define IN6_IS_ADDR_MULTICAST(a) (((uint8_t *) (a))[0] == 0xff)
#endif

static inline int ff_is_multicast_address(struct sockaddr *addr)
{
    if (addr->sa_family == AF_INET) {
        return IN_MULTICAST(ntohl(((struct sockaddr_in *)addr)->sin_addr.s_addr));
    }
#if HAVE_STRUCT_SOCKADDR_IN6
    if (addr->sa_family == AF_INET6) {
        return IN6_IS_ADDR_MULTICAST(&((struct sockaddr_in6 *)addr)->sin6_addr);
    }
#endif

    return 0;
}

#endif /* AVFORMAT_NETWORK_H */