| /* |
| * Various utilities for ffmpeg system |
| * Copyright (c) 2000, 2001, 2002 Fabrice Bellard |
| * copyright (c) 2002 Francois Revol |
| * |
| * 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 |
| */ |
| |
| /* needed by inet_aton() */ |
| #define _SVID_SOURCE |
| |
| #include "config.h" |
| #include "avformat.h" |
| #include "os_support.h" |
| |
| #if defined(_WIN32) && !defined(__MINGW32CE__) |
| #include <windows.h> |
| |
| #undef open |
| int ff_win32_open(const char *filename_utf8, int oflag, int pmode) |
| { |
| int fd; |
| int num_chars; |
| wchar_t *filename_w; |
| |
| /* convert UTF-8 to wide chars */ |
| num_chars = MultiByteToWideChar(CP_UTF8, 0, filename_utf8, -1, NULL, 0); |
| if (num_chars <= 0) |
| return -1; |
| filename_w = av_mallocz(sizeof(wchar_t) * num_chars); |
| MultiByteToWideChar(CP_UTF8, 0, filename_utf8, -1, filename_w, num_chars); |
| |
| fd = _wopen(filename_w, oflag, pmode); |
| av_freep(&filename_w); |
| |
| /* filename maybe be in CP_ACP */ |
| if (fd == -1 && !(oflag & O_CREAT)) |
| return open(filename_utf8, oflag, pmode); |
| |
| return fd; |
| } |
| #endif |
| |
| #if CONFIG_NETWORK |
| #include <fcntl.h> |
| #include <unistd.h> |
| #if !HAVE_POLL_H |
| #include <sys/time.h> |
| #if HAVE_WINSOCK2_H |
| #include <winsock2.h> |
| #elif HAVE_SYS_SELECT_H |
| #include <sys/select.h> |
| #endif |
| #endif |
| |
| #include "network.h" |
| |
| #if !HAVE_INET_ATON |
| #include <stdlib.h> |
| #include <strings.h> |
| |
| int ff_inet_aton (const char * str, struct in_addr * add) |
| { |
| unsigned int add1 = 0, add2 = 0, add3 = 0, add4 = 0; |
| |
| if (sscanf(str, "%d.%d.%d.%d", &add1, &add2, &add3, &add4) != 4) |
| return 0; |
| |
| if (!add1 || (add1|add2|add3|add4) > 255) return 0; |
| |
| add->s_addr = htonl((add1 << 24) + (add2 << 16) + (add3 << 8) + add4); |
| |
| return 1; |
| } |
| #else |
| int ff_inet_aton (const char * str, struct in_addr * add) |
| { |
| return inet_aton(str, add); |
| } |
| #endif /* !HAVE_INET_ATON */ |
| |
| #if !HAVE_GETADDRINFO |
| int ff_getaddrinfo(const char *node, const char *service, |
| const struct addrinfo *hints, struct addrinfo **res) |
| { |
| struct hostent *h = NULL; |
| struct addrinfo *ai; |
| struct sockaddr_in *sin; |
| |
| #if HAVE_WINSOCK2_H |
| int (WSAAPI *win_getaddrinfo)(const char *node, const char *service, |
| const struct addrinfo *hints, |
| struct addrinfo **res); |
| HMODULE ws2mod = GetModuleHandle("ws2_32.dll"); |
| win_getaddrinfo = GetProcAddress(ws2mod, "getaddrinfo"); |
| if (win_getaddrinfo) |
| return win_getaddrinfo(node, service, hints, res); |
| #endif |
| |
| *res = NULL; |
| sin = av_mallocz(sizeof(struct sockaddr_in)); |
| if (!sin) |
| return EAI_FAIL; |
| sin->sin_family = AF_INET; |
| |
| if (node) { |
| if (!ff_inet_aton(node, &sin->sin_addr)) { |
| if (hints && (hints->ai_flags & AI_NUMERICHOST)) { |
| av_free(sin); |
| return EAI_FAIL; |
| } |
| h = gethostbyname(node); |
| if (!h) { |
| av_free(sin); |
| return EAI_FAIL; |
| } |
| memcpy(&sin->sin_addr, h->h_addr_list[0], sizeof(struct in_addr)); |
| } |
| } else { |
| if (hints && (hints->ai_flags & AI_PASSIVE)) { |
| sin->sin_addr.s_addr = INADDR_ANY; |
| } else |
| sin->sin_addr.s_addr = INADDR_LOOPBACK; |
| } |
| |
| /* Note: getaddrinfo allows service to be a string, which |
| * should be looked up using getservbyname. */ |
| if (service) |
| sin->sin_port = htons(atoi(service)); |
| |
| ai = av_mallocz(sizeof(struct addrinfo)); |
| if (!ai) { |
| av_free(sin); |
| return EAI_FAIL; |
| } |
| |
| *res = ai; |
| ai->ai_family = AF_INET; |
| ai->ai_socktype = hints ? hints->ai_socktype : 0; |
| switch (ai->ai_socktype) { |
| case SOCK_STREAM: ai->ai_protocol = IPPROTO_TCP; break; |
| case SOCK_DGRAM: ai->ai_protocol = IPPROTO_UDP; break; |
| default: ai->ai_protocol = 0; break; |
| } |
| |
| ai->ai_addr = (struct sockaddr *)sin; |
| ai->ai_addrlen = sizeof(struct sockaddr_in); |
| if (hints && (hints->ai_flags & AI_CANONNAME)) |
| ai->ai_canonname = h ? av_strdup(h->h_name) : NULL; |
| |
| ai->ai_next = NULL; |
| return 0; |
| } |
| |
| void ff_freeaddrinfo(struct addrinfo *res) |
| { |
| #if HAVE_WINSOCK2_H |
| void (WSAAPI *win_freeaddrinfo)(struct addrinfo *res); |
| HMODULE ws2mod = GetModuleHandle("ws2_32.dll"); |
| win_freeaddrinfo = (void (WSAAPI *)(struct addrinfo *res)) |
| GetProcAddress(ws2mod, "freeaddrinfo"); |
| if (win_freeaddrinfo) { |
| win_freeaddrinfo(res); |
| return; |
| } |
| #endif |
| |
| av_free(res->ai_canonname); |
| av_free(res->ai_addr); |
| av_free(res); |
| } |
| |
| int ff_getnameinfo(const struct sockaddr *sa, int salen, |
| char *host, int hostlen, |
| char *serv, int servlen, int flags) |
| { |
| const struct sockaddr_in *sin = (const struct sockaddr_in *)sa; |
| |
| #if HAVE_WINSOCK2_H |
| int (WSAAPI *win_getnameinfo)(const struct sockaddr *sa, socklen_t salen, |
| char *host, DWORD hostlen, |
| char *serv, DWORD servlen, int flags); |
| HMODULE ws2mod = GetModuleHandle("ws2_32.dll"); |
| win_getnameinfo = GetProcAddress(ws2mod, "getnameinfo"); |
| if (win_getnameinfo) |
| return win_getnameinfo(sa, salen, host, hostlen, serv, servlen, flags); |
| #endif |
| |
| if (sa->sa_family != AF_INET) |
| return EAI_FAMILY; |
| if (!host && !serv) |
| return EAI_NONAME; |
| |
| if (host && hostlen > 0) { |
| struct hostent *ent = NULL; |
| uint32_t a; |
| if (!(flags & NI_NUMERICHOST)) |
| ent = gethostbyaddr((const char *)&sin->sin_addr, |
| sizeof(sin->sin_addr), AF_INET); |
| |
| if (ent) { |
| snprintf(host, hostlen, "%s", ent->h_name); |
| } else if (flags & NI_NAMERQD) { |
| return EAI_NONAME; |
| } else { |
| a = ntohl(sin->sin_addr.s_addr); |
| snprintf(host, hostlen, "%d.%d.%d.%d", |
| ((a >> 24) & 0xff), ((a >> 16) & 0xff), |
| ((a >> 8) & 0xff), ( a & 0xff)); |
| } |
| } |
| |
| if (serv && servlen > 0) { |
| struct servent *ent = NULL; |
| if (!(flags & NI_NUMERICSERV)) |
| ent = getservbyport(sin->sin_port, flags & NI_DGRAM ? "udp" : "tcp"); |
| |
| if (ent) { |
| snprintf(serv, servlen, "%s", ent->s_name); |
| } else |
| snprintf(serv, servlen, "%d", ntohs(sin->sin_port)); |
| } |
| |
| return 0; |
| } |
| |
| const char *ff_gai_strerror(int ecode) |
| { |
| switch(ecode) { |
| case EAI_FAIL : return "A non-recoverable error occurred"; |
| case EAI_FAMILY : return "The address family was not recognized or the address length was invalid for the specified family"; |
| case EAI_NONAME : return "The name does not resolve for the supplied parameters"; |
| } |
| |
| return "Unknown error"; |
| } |
| #endif |
| |
| int ff_socket_nonblock(int socket, int enable) |
| { |
| #if HAVE_WINSOCK2_H |
| return ioctlsocket(socket, FIONBIO, &enable); |
| #else |
| if (enable) |
| return fcntl(socket, F_SETFL, fcntl(socket, F_GETFL) | O_NONBLOCK); |
| else |
| return fcntl(socket, F_SETFL, fcntl(socket, F_GETFL) & ~O_NONBLOCK); |
| #endif |
| } |
| |
| #if !HAVE_POLL_H |
| int poll(struct pollfd *fds, nfds_t numfds, int timeout) |
| { |
| fd_set read_set; |
| fd_set write_set; |
| fd_set exception_set; |
| nfds_t i; |
| int n; |
| int rc; |
| |
| #if HAVE_WINSOCK2_H |
| if (numfds >= FD_SETSIZE) { |
| errno = EINVAL; |
| return -1; |
| } |
| #endif |
| |
| FD_ZERO(&read_set); |
| FD_ZERO(&write_set); |
| FD_ZERO(&exception_set); |
| |
| n = -1; |
| for(i = 0; i < numfds; i++) { |
| if (fds[i].fd < 0) |
| continue; |
| #if !HAVE_WINSOCK2_H |
| if (fds[i].fd >= FD_SETSIZE) { |
| errno = EINVAL; |
| return -1; |
| } |
| #endif |
| |
| if (fds[i].events & POLLIN) FD_SET(fds[i].fd, &read_set); |
| if (fds[i].events & POLLOUT) FD_SET(fds[i].fd, &write_set); |
| if (fds[i].events & POLLERR) FD_SET(fds[i].fd, &exception_set); |
| |
| if (fds[i].fd > n) |
| n = fds[i].fd; |
| }; |
| |
| if (n == -1) |
| /* Hey!? Nothing to poll, in fact!!! */ |
| return 0; |
| |
| if (timeout < 0) |
| rc = select(n+1, &read_set, &write_set, &exception_set, NULL); |
| else { |
| struct timeval tv; |
| |
| tv.tv_sec = timeout / 1000; |
| tv.tv_usec = 1000 * (timeout % 1000); |
| rc = select(n+1, &read_set, &write_set, &exception_set, &tv); |
| }; |
| |
| if (rc < 0) |
| return rc; |
| |
| for(i = 0; i < numfds; i++) { |
| fds[i].revents = 0; |
| |
| if (FD_ISSET(fds[i].fd, &read_set)) fds[i].revents |= POLLIN; |
| if (FD_ISSET(fds[i].fd, &write_set)) fds[i].revents |= POLLOUT; |
| if (FD_ISSET(fds[i].fd, &exception_set)) fds[i].revents |= POLLERR; |
| }; |
| |
| return rc; |
| } |
| #endif /* HAVE_POLL_H */ |
| #endif /* CONFIG_NETWORK */ |