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
|
/*
* 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
*/
#include "libavutil/avutil.h"
#include "network.h"
#include "libavcodec/internal.h"
#define THREADS (HAVE_PTHREADS || (defined(WIN32) && !defined(__MINGW32CE__)))
#if THREADS
#if HAVE_PTHREADS
#include <pthread.h>
#else
#include "libavcodec/w32pthreads.h"
#endif
#endif
#if CONFIG_OPENSSL
#include <openssl/ssl.h>
static int openssl_init;
#if THREADS
#include <openssl/crypto.h>
#include "libavutil/avutil.h"
pthread_mutex_t *openssl_mutexes;
static void openssl_lock(int mode, int type, const char *file, int line)
{
if (mode & CRYPTO_LOCK)
pthread_mutex_lock(&openssl_mutexes[type]);
else
pthread_mutex_unlock(&openssl_mutexes[type]);
}
#if !defined(WIN32) && OPENSSL_VERSION_NUMBER < 0x10000000
static unsigned long openssl_thread_id(void)
{
return (intptr_t) pthread_self();
}
#endif
#endif
#endif
#if CONFIG_GNUTLS
#include <gnutls/gnutls.h>
#if THREADS && GNUTLS_VERSION_NUMBER <= 0x020b00
#include <gcrypt.h>
#include <errno.h>
#undef malloc
#undef free
GCRY_THREAD_OPTION_PTHREAD_IMPL;
#endif
#endif
void ff_tls_init(void)
{
avpriv_lock_avformat();
#if CONFIG_OPENSSL
if (!openssl_init) {
SSL_library_init();
SSL_load_error_strings();
#if THREADS
if (!CRYPTO_get_locking_callback()) {
int i;
openssl_mutexes = av_malloc(sizeof(pthread_mutex_t) * CRYPTO_num_locks());
for (i = 0; i < CRYPTO_num_locks(); i++)
pthread_mutex_init(&openssl_mutexes[i], NULL);
CRYPTO_set_locking_callback(openssl_lock);
#if !defined(WIN32) && OPENSSL_VERSION_NUMBER < 0x10000000
CRYPTO_set_id_callback(openssl_thread_id);
#endif
}
#endif
}
openssl_init++;
#endif
#if CONFIG_GNUTLS
#if THREADS && GNUTLS_VERSION_NUMBER < 0x020b00
if (gcry_control(GCRYCTL_ANY_INITIALIZATION_P) == 0)
gcry_control(GCRYCTL_SET_THREAD_CBS, &gcry_threads_pthread);
#endif
gnutls_global_init();
#endif
avpriv_unlock_avformat();
}
void ff_tls_deinit(void)
{
avpriv_lock_avformat();
#if CONFIG_OPENSSL
openssl_init--;
if (!openssl_init) {
#if THREADS
if (CRYPTO_get_locking_callback() == openssl_lock) {
int i;
CRYPTO_set_locking_callback(NULL);
for (i = 0; i < CRYPTO_num_locks(); i++)
pthread_mutex_destroy(&openssl_mutexes[i]);
av_free(openssl_mutexes);
}
#endif
}
#endif
#if CONFIG_GNUTLS
gnutls_global_deinit();
#endif
avpriv_unlock_avformat();
}
int ff_network_inited_globally;
int ff_network_init(void)
{
if (!ff_network_inited_globally)
av_log(NULL, AV_LOG_WARNING, "Using network protocols without global "
"network initialization. Please use "
"avformat_network_init(), this will "
"become mandatory later.\n");
#if HAVE_WINSOCK2_H
WSADATA wsaData;
if (WSAStartup(MAKEWORD(1,1), &wsaData))
return 0;
#endif
return 1;
}
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);
}
void ff_network_close(void)
{
#if HAVE_WINSOCK2_H
WSACleanup();
#endif
}
#if HAVE_WINSOCK2_H
int ff_neterrno(void)
{
int err = WSAGetLastError();
switch (err) {
case WSAEWOULDBLOCK:
return AVERROR(EAGAIN);
case WSAEINTR:
return AVERROR(EINTR);
}
return -err;
}
#endif
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;
}
|
