| /* |
| * Copyright (c) 2007 The FFmpeg Project |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg 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. |
| * |
| * FFmpeg 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 FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include <fcntl.h> |
| #include "network.h" |
| #include "tls.h" |
| #include "url.h" |
| #include "libavcodec/internal.h" |
| #include "libavutil/avutil.h" |
| #include "libavutil/mem.h" |
| #include "libavutil/time.h" |
| |
| int ff_tls_init(void) |
| { |
| #if CONFIG_TLS_OPENSSL_PROTOCOL |
| int ret; |
| if ((ret = ff_openssl_init()) < 0) |
| return ret; |
| #endif |
| #if CONFIG_TLS_GNUTLS_PROTOCOL |
| ff_gnutls_init(); |
| #endif |
| return 0; |
| } |
| |
| void ff_tls_deinit(void) |
| { |
| #if CONFIG_TLS_OPENSSL_PROTOCOL |
| ff_openssl_deinit(); |
| #endif |
| #if CONFIG_TLS_GNUTLS_PROTOCOL |
| ff_gnutls_deinit(); |
| #endif |
| } |
| |
| int ff_network_inited_globally; |
| |
| int ff_network_init(void) |
| { |
| #if HAVE_WINSOCK2_H |
| WSADATA wsaData; |
| #endif |
| |
| 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 |
| 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, POLLING_TIME); |
| return ret < 0 ? ff_neterrno() : p.revents & (ev | POLLERR | POLLHUP) ? 0 : AVERROR(EAGAIN); |
| } |
| |
| int ff_network_wait_fd_timeout(int fd, int write, int64_t timeout, AVIOInterruptCB *int_cb) |
| { |
| int ret; |
| int64_t wait_start = 0; |
| |
| while (1) { |
| if (ff_check_interrupt(int_cb)) |
| return AVERROR_EXIT; |
| ret = ff_network_wait_fd(fd, write); |
| if (ret != AVERROR(EAGAIN)) |
| return ret; |
| if (timeout > 0) { |
| if (!wait_start) |
| wait_start = av_gettime_relative(); |
| else if (av_gettime_relative() - wait_start > timeout) |
| return AVERROR(ETIMEDOUT); |
| } |
| } |
| } |
| |
| 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); |
| case WSAEPROTONOSUPPORT: |
| return AVERROR(EPROTONOSUPPORT); |
| case WSAETIMEDOUT: |
| return AVERROR(ETIMEDOUT); |
| case WSAECONNREFUSED: |
| return AVERROR(ECONNREFUSED); |
| case WSAEINPROGRESS: |
| return AVERROR(EINPROGRESS); |
| } |
| 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; |
| } |
| |
| static int ff_poll_interrupt(struct pollfd *p, nfds_t nfds, int timeout, |
| AVIOInterruptCB *cb) |
| { |
| int runs = timeout / POLLING_TIME; |
| int ret = 0; |
| |
| do { |
| if (ff_check_interrupt(cb)) |
| return AVERROR_EXIT; |
| ret = poll(p, nfds, POLLING_TIME); |
| if (ret != 0) |
| break; |
| } while (timeout <= 0 || runs-- > 0); |
| |
| if (!ret) |
| return AVERROR(ETIMEDOUT); |
| if (ret < 0) |
| return AVERROR(errno); |
| return ret; |
| } |
| |
| int ff_socket(int af, int type, int proto) |
| { |
| int fd; |
| |
| #ifdef SOCK_CLOEXEC |
| fd = socket(af, type | SOCK_CLOEXEC, proto); |
| if (fd == -1 && errno == EINVAL) |
| #endif |
| { |
| fd = socket(af, type, proto); |
| #if HAVE_FCNTL |
| if (fd != -1) { |
| if (fcntl(fd, F_SETFD, FD_CLOEXEC) == -1) |
| av_log(NULL, AV_LOG_DEBUG, "Failed to set close on exec\n"); |
| } |
| #endif |
| } |
| #ifdef SO_NOSIGPIPE |
| if (fd != -1) |
| setsockopt(fd, SOL_SOCKET, SO_NOSIGPIPE, &(int){1}, sizeof(int)); |
| #endif |
| return fd; |
| } |
| |
| int ff_listen(int fd, const struct sockaddr *addr, |
| socklen_t addrlen) |
| { |
| int ret; |
| int reuse = 1; |
| if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &reuse, sizeof(reuse))) { |
| av_log(NULL, AV_LOG_WARNING, "setsockopt(SO_REUSEADDR) failed\n"); |
| } |
| ret = bind(fd, addr, addrlen); |
| if (ret) |
| return ff_neterrno(); |
| |
| ret = listen(fd, 1); |
| if (ret) |
| return ff_neterrno(); |
| return ret; |
| } |
| |
| int ff_accept(int fd, int timeout, URLContext *h) |
| { |
| int ret; |
| struct pollfd lp = { fd, POLLIN, 0 }; |
| |
| ret = ff_poll_interrupt(&lp, 1, timeout, &h->interrupt_callback); |
| if (ret < 0) |
| return ret; |
| |
| ret = accept(fd, NULL, NULL); |
| if (ret < 0) |
| return ff_neterrno(); |
| if (ff_socket_nonblock(ret, 1) < 0) |
| av_log(NULL, AV_LOG_DEBUG, "ff_socket_nonblock failed\n"); |
| |
| return ret; |
| } |
| |
| int ff_listen_bind(int fd, const struct sockaddr *addr, |
| socklen_t addrlen, int timeout, URLContext *h) |
| { |
| int ret; |
| if ((ret = ff_listen(fd, addr, addrlen)) < 0) |
| return ret; |
| if ((ret = ff_accept(fd, timeout, h)) < 0) |
| return ret; |
| closesocket(fd); |
| return ret; |
| } |
| |
| int ff_listen_connect(int fd, const struct sockaddr *addr, |
| socklen_t addrlen, int timeout, URLContext *h, |
| int will_try_next) |
| { |
| struct pollfd p = {fd, POLLOUT, 0}; |
| int ret; |
| socklen_t optlen; |
| |
| if (ff_socket_nonblock(fd, 1) < 0) |
| av_log(NULL, AV_LOG_DEBUG, "ff_socket_nonblock failed\n"); |
| |
| while ((ret = connect(fd, addr, addrlen))) { |
| ret = ff_neterrno(); |
| switch (ret) { |
| case AVERROR(EINTR): |
| if (ff_check_interrupt(&h->interrupt_callback)) |
| return AVERROR_EXIT; |
| continue; |
| case AVERROR(EINPROGRESS): |
| case AVERROR(EAGAIN): |
| ret = ff_poll_interrupt(&p, 1, timeout, &h->interrupt_callback); |
| if (ret < 0) |
| return ret; |
| optlen = sizeof(ret); |
| if (getsockopt (fd, SOL_SOCKET, SO_ERROR, &ret, &optlen)) |
| ret = AVUNERROR(ff_neterrno()); |
| if (ret != 0) { |
| char errbuf[100]; |
| ret = AVERROR(ret); |
| av_strerror(ret, errbuf, sizeof(errbuf)); |
| if (will_try_next) |
| av_log(h, AV_LOG_WARNING, |
| "Connection to %s failed (%s), trying next address\n", |
| h->filename, errbuf); |
| else |
| av_log(h, AV_LOG_ERROR, "Connection to %s failed: %s\n", |
| h->filename, errbuf); |
| } |
| default: |
| return ret; |
| } |
| } |
| return ret; |
| } |
| |
| static int match_host_pattern(const char *pattern, const char *hostname) |
| { |
| int len_p, len_h; |
| if (!strcmp(pattern, "*")) |
| return 1; |
| // Skip a possible *. at the start of the pattern |
| if (pattern[0] == '*') |
| pattern++; |
| if (pattern[0] == '.') |
| pattern++; |
| len_p = strlen(pattern); |
| len_h = strlen(hostname); |
| if (len_p > len_h) |
| return 0; |
| // Simply check if the end of hostname is equal to 'pattern' |
| if (!strcmp(pattern, &hostname[len_h - len_p])) { |
| if (len_h == len_p) |
| return 1; // Exact match |
| if (hostname[len_h - len_p - 1] == '.') |
| return 1; // The matched substring is a domain and not just a substring of a domain |
| } |
| return 0; |
| } |
| |
| int ff_http_match_no_proxy(const char *no_proxy, const char *hostname) |
| { |
| char *buf, *start; |
| int ret = 0; |
| if (!no_proxy) |
| return 0; |
| if (!hostname) |
| return 0; |
| buf = av_strdup(no_proxy); |
| if (!buf) |
| return 0; |
| start = buf; |
| while (start) { |
| char *sep, *next = NULL; |
| start += strspn(start, " ,"); |
| sep = start + strcspn(start, " ,"); |
| if (*sep) { |
| next = sep + 1; |
| *sep = '\0'; |
| } |
| if (match_host_pattern(start, hostname)) { |
| ret = 1; |
| break; |
| } |
| start = next; |
| } |
| av_free(buf); |
| return ret; |
| } |
