w32pthreads: move from lavc to compat/
[libav.git] / libavformat / network.c
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1/*
2 * Copyright (c) 2007 The Libav Project
3 *
4 * This file is part of Libav.
5 *
6 * Libav is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * Libav 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 GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with Libav; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21#include "network.h"
48e59ad8 22#include "libavcodec/internal.h"
70766c21 23#include "libavutil/mem.h"
48e59ad8 24
9efbfe57 25#if HAVE_THREADS
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26#if HAVE_PTHREADS
27#include <pthread.h>
28#else
90f9a583 29#include "compat/w32pthreads.h"
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30#endif
31#endif
32
33#if CONFIG_OPENSSL
34#include <openssl/ssl.h>
35static int openssl_init;
9efbfe57 36#if HAVE_THREADS
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37#include <openssl/crypto.h>
38#include "libavutil/avutil.h"
39pthread_mutex_t *openssl_mutexes;
40static void openssl_lock(int mode, int type, const char *file, int line)
41{
42 if (mode & CRYPTO_LOCK)
43 pthread_mutex_lock(&openssl_mutexes[type]);
44 else
45 pthread_mutex_unlock(&openssl_mutexes[type]);
46}
24612846 47#if !defined(WIN32) && OPENSSL_VERSION_NUMBER < 0x10000000
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48static unsigned long openssl_thread_id(void)
49{
50 return (intptr_t) pthread_self();
51}
52#endif
53#endif
54#endif
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55#if CONFIG_GNUTLS
56#include <gnutls/gnutls.h>
9efbfe57 57#if HAVE_THREADS && GNUTLS_VERSION_NUMBER <= 0x020b00
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58#include <gcrypt.h>
59#include <errno.h>
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60GCRY_THREAD_OPTION_PTHREAD_IMPL;
61#endif
62#endif
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63
64void ff_tls_init(void)
65{
66 avpriv_lock_avformat();
67#if CONFIG_OPENSSL
68 if (!openssl_init) {
69 SSL_library_init();
70 SSL_load_error_strings();
9efbfe57 71#if HAVE_THREADS
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72 if (!CRYPTO_get_locking_callback()) {
73 int i;
74 openssl_mutexes = av_malloc(sizeof(pthread_mutex_t) * CRYPTO_num_locks());
75 for (i = 0; i < CRYPTO_num_locks(); i++)
76 pthread_mutex_init(&openssl_mutexes[i], NULL);
77 CRYPTO_set_locking_callback(openssl_lock);
24612846 78#if !defined(WIN32) && OPENSSL_VERSION_NUMBER < 0x10000000
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79 CRYPTO_set_id_callback(openssl_thread_id);
80#endif
81 }
82#endif
83 }
84 openssl_init++;
85#endif
1606e551 86#if CONFIG_GNUTLS
9efbfe57 87#if HAVE_THREADS && GNUTLS_VERSION_NUMBER < 0x020b00
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88 if (gcry_control(GCRYCTL_ANY_INITIALIZATION_P) == 0)
89 gcry_control(GCRYCTL_SET_THREAD_CBS, &gcry_threads_pthread);
90#endif
91 gnutls_global_init();
92#endif
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93 avpriv_unlock_avformat();
94}
95
96void ff_tls_deinit(void)
97{
98 avpriv_lock_avformat();
99#if CONFIG_OPENSSL
100 openssl_init--;
101 if (!openssl_init) {
9efbfe57 102#if HAVE_THREADS
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103 if (CRYPTO_get_locking_callback() == openssl_lock) {
104 int i;
105 CRYPTO_set_locking_callback(NULL);
106 for (i = 0; i < CRYPTO_num_locks(); i++)
107 pthread_mutex_destroy(&openssl_mutexes[i]);
108 av_free(openssl_mutexes);
109 }
110#endif
111 }
112#endif
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113#if CONFIG_GNUTLS
114 gnutls_global_deinit();
115#endif
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116 avpriv_unlock_avformat();
117}
f6d37100 118
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119int ff_network_inited_globally;
120
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121int ff_network_init(void)
122{
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123#if HAVE_WINSOCK2_H
124 WSADATA wsaData;
125#endif
126
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127 if (!ff_network_inited_globally)
128 av_log(NULL, AV_LOG_WARNING, "Using network protocols without global "
129 "network initialization. Please use "
130 "avformat_network_init(), this will "
131 "become mandatory later.\n");
f6d37100 132#if HAVE_WINSOCK2_H
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133 if (WSAStartup(MAKEWORD(1,1), &wsaData))
134 return 0;
135#endif
136 return 1;
137}
138
139int ff_network_wait_fd(int fd, int write)
140{
141 int ev = write ? POLLOUT : POLLIN;
142 struct pollfd p = { .fd = fd, .events = ev, .revents = 0 };
143 int ret;
144 ret = poll(&p, 1, 100);
145 return ret < 0 ? ff_neterrno() : p.revents & (ev | POLLERR | POLLHUP) ? 0 : AVERROR(EAGAIN);
146}
147
148void ff_network_close(void)
149{
150#if HAVE_WINSOCK2_H
151 WSACleanup();
152#endif
153}
154
155#if HAVE_WINSOCK2_H
156int ff_neterrno(void)
157{
158 int err = WSAGetLastError();
159 switch (err) {
160 case WSAEWOULDBLOCK:
161 return AVERROR(EAGAIN);
162 case WSAEINTR:
163 return AVERROR(EINTR);
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164 case WSAEPROTONOSUPPORT:
165 return AVERROR(EPROTONOSUPPORT);
166 case WSAETIMEDOUT:
167 return AVERROR(ETIMEDOUT);
168 case WSAECONNREFUSED:
169 return AVERROR(ECONNREFUSED);
170 case WSAEINPROGRESS:
171 return AVERROR(EINPROGRESS);
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172 }
173 return -err;
174}
175#endif
176
177int ff_is_multicast_address(struct sockaddr *addr)
178{
179 if (addr->sa_family == AF_INET) {
180 return IN_MULTICAST(ntohl(((struct sockaddr_in *)addr)->sin_addr.s_addr));
181 }
182#if HAVE_STRUCT_SOCKADDR_IN6
183 if (addr->sa_family == AF_INET6) {
184 return IN6_IS_ADDR_MULTICAST(&((struct sockaddr_in6 *)addr)->sin6_addr);
185 }
186#endif
187
188 return 0;
189}