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347 lines
9.8 KiB
347 lines
9.8 KiB
/* |
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* various OS-feature replacement utilities |
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* Copyright (c) 2000, 2001, 2002 Fabrice Bellard |
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* copyright (c) 2002 Francois Revol |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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/* needed by inet_aton() */ |
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#define _SVID_SOURCE |
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#include "config.h" |
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#include "avformat.h" |
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#include "os_support.h" |
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#if defined(_WIN32) && !defined(__MINGW32CE__) |
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#undef open |
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#include <fcntl.h> |
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#include <io.h> |
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#include <windows.h> |
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#include <share.h> |
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int ff_win32_open(const char *filename_utf8, int oflag, int pmode) |
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{ |
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int fd; |
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int num_chars; |
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wchar_t *filename_w; |
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/* convert UTF-8 to wide chars */ |
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num_chars = MultiByteToWideChar(CP_UTF8, 0, filename_utf8, -1, NULL, 0); |
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if (num_chars <= 0) |
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return -1; |
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filename_w = av_mallocz(sizeof(wchar_t) * num_chars); |
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MultiByteToWideChar(CP_UTF8, 0, filename_utf8, -1, filename_w, num_chars); |
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fd = _wsopen(filename_w, oflag, SH_DENYNO, pmode); |
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av_freep(&filename_w); |
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/* filename maybe be in CP_ACP */ |
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if (fd == -1 && !(oflag & O_CREAT)) |
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return _sopen(filename_utf8, oflag, SH_DENYNO, pmode); |
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return fd; |
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} |
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#endif |
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#if CONFIG_NETWORK |
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#include <fcntl.h> |
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#if !HAVE_POLL_H |
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#if HAVE_SYS_TIME_H |
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#include <sys/time.h> |
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#endif |
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#if HAVE_WINSOCK2_H |
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#include <winsock2.h> |
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#elif HAVE_SYS_SELECT_H |
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#include <sys/select.h> |
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#endif |
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#endif |
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#include "network.h" |
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#if !HAVE_INET_ATON |
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#include <stdlib.h> |
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int ff_inet_aton (const char * str, struct in_addr * add) |
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{ |
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unsigned int add1 = 0, add2 = 0, add3 = 0, add4 = 0; |
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if (sscanf(str, "%d.%d.%d.%d", &add1, &add2, &add3, &add4) != 4) |
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return 0; |
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if (!add1 || (add1|add2|add3|add4) > 255) return 0; |
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add->s_addr = htonl((add1 << 24) + (add2 << 16) + (add3 << 8) + add4); |
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return 1; |
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} |
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#else |
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int ff_inet_aton (const char * str, struct in_addr * add) |
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{ |
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return inet_aton(str, add); |
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} |
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#endif /* !HAVE_INET_ATON */ |
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#if !HAVE_GETADDRINFO |
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int ff_getaddrinfo(const char *node, const char *service, |
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const struct addrinfo *hints, struct addrinfo **res) |
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{ |
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struct hostent *h = NULL; |
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struct addrinfo *ai; |
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struct sockaddr_in *sin; |
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#if HAVE_WINSOCK2_H |
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int (WSAAPI *win_getaddrinfo)(const char *node, const char *service, |
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const struct addrinfo *hints, |
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struct addrinfo **res); |
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HMODULE ws2mod = GetModuleHandle("ws2_32.dll"); |
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win_getaddrinfo = GetProcAddress(ws2mod, "getaddrinfo"); |
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if (win_getaddrinfo) |
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return win_getaddrinfo(node, service, hints, res); |
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#endif |
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*res = NULL; |
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sin = av_mallocz(sizeof(struct sockaddr_in)); |
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if (!sin) |
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return EAI_FAIL; |
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sin->sin_family = AF_INET; |
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if (node) { |
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if (!ff_inet_aton(node, &sin->sin_addr)) { |
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if (hints && (hints->ai_flags & AI_NUMERICHOST)) { |
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av_free(sin); |
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return EAI_FAIL; |
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} |
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h = gethostbyname(node); |
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if (!h) { |
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av_free(sin); |
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return EAI_FAIL; |
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} |
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memcpy(&sin->sin_addr, h->h_addr_list[0], sizeof(struct in_addr)); |
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} |
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} else { |
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if (hints && (hints->ai_flags & AI_PASSIVE)) { |
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sin->sin_addr.s_addr = INADDR_ANY; |
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} else |
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sin->sin_addr.s_addr = INADDR_LOOPBACK; |
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} |
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/* Note: getaddrinfo allows service to be a string, which |
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* should be looked up using getservbyname. */ |
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if (service) |
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sin->sin_port = htons(atoi(service)); |
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ai = av_mallocz(sizeof(struct addrinfo)); |
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if (!ai) { |
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av_free(sin); |
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return EAI_FAIL; |
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} |
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*res = ai; |
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ai->ai_family = AF_INET; |
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ai->ai_socktype = hints ? hints->ai_socktype : 0; |
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switch (ai->ai_socktype) { |
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case SOCK_STREAM: ai->ai_protocol = IPPROTO_TCP; break; |
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case SOCK_DGRAM: ai->ai_protocol = IPPROTO_UDP; break; |
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default: ai->ai_protocol = 0; break; |
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} |
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ai->ai_addr = (struct sockaddr *)sin; |
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ai->ai_addrlen = sizeof(struct sockaddr_in); |
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if (hints && (hints->ai_flags & AI_CANONNAME)) |
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ai->ai_canonname = h ? av_strdup(h->h_name) : NULL; |
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ai->ai_next = NULL; |
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return 0; |
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} |
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void ff_freeaddrinfo(struct addrinfo *res) |
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{ |
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#if HAVE_WINSOCK2_H |
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void (WSAAPI *win_freeaddrinfo)(struct addrinfo *res); |
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HMODULE ws2mod = GetModuleHandle("ws2_32.dll"); |
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win_freeaddrinfo = (void (WSAAPI *)(struct addrinfo *res)) |
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GetProcAddress(ws2mod, "freeaddrinfo"); |
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if (win_freeaddrinfo) { |
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win_freeaddrinfo(res); |
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return; |
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} |
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#endif |
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av_free(res->ai_canonname); |
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av_free(res->ai_addr); |
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av_free(res); |
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} |
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int ff_getnameinfo(const struct sockaddr *sa, int salen, |
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char *host, int hostlen, |
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char *serv, int servlen, int flags) |
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{ |
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const struct sockaddr_in *sin = (const struct sockaddr_in *)sa; |
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#if HAVE_WINSOCK2_H |
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int (WSAAPI *win_getnameinfo)(const struct sockaddr *sa, socklen_t salen, |
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char *host, DWORD hostlen, |
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char *serv, DWORD servlen, int flags); |
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HMODULE ws2mod = GetModuleHandle("ws2_32.dll"); |
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win_getnameinfo = GetProcAddress(ws2mod, "getnameinfo"); |
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if (win_getnameinfo) |
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return win_getnameinfo(sa, salen, host, hostlen, serv, servlen, flags); |
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#endif |
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if (sa->sa_family != AF_INET) |
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return EAI_FAMILY; |
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if (!host && !serv) |
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return EAI_NONAME; |
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if (host && hostlen > 0) { |
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struct hostent *ent = NULL; |
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uint32_t a; |
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if (!(flags & NI_NUMERICHOST)) |
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ent = gethostbyaddr((const char *)&sin->sin_addr, |
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sizeof(sin->sin_addr), AF_INET); |
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if (ent) { |
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snprintf(host, hostlen, "%s", ent->h_name); |
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} else if (flags & NI_NAMERQD) { |
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return EAI_NONAME; |
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} else { |
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a = ntohl(sin->sin_addr.s_addr); |
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snprintf(host, hostlen, "%d.%d.%d.%d", |
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((a >> 24) & 0xff), ((a >> 16) & 0xff), |
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((a >> 8) & 0xff), ( a & 0xff)); |
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} |
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} |
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if (serv && servlen > 0) { |
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struct servent *ent = NULL; |
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if (!(flags & NI_NUMERICSERV)) |
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ent = getservbyport(sin->sin_port, flags & NI_DGRAM ? "udp" : "tcp"); |
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if (ent) { |
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snprintf(serv, servlen, "%s", ent->s_name); |
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} else |
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snprintf(serv, servlen, "%d", ntohs(sin->sin_port)); |
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} |
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return 0; |
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} |
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#endif /* !HAVE_GETADDRINFO */ |
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#if !HAVE_GETADDRINFO || HAVE_WINSOCK2_H |
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const char *ff_gai_strerror(int ecode) |
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{ |
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switch(ecode) { |
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case EAI_AGAIN : return "Temporary failure in name resolution"; |
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case EAI_BADFLAGS: return "Invalid flags for ai_flags"; |
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case EAI_FAIL : return "A non-recoverable error occurred"; |
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case EAI_FAMILY : return "The address family was not recognized or the address length was invalid for the specified family"; |
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case EAI_MEMORY : return "Memory allocation failure"; |
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#if EAI_NODATA != EAI_NONAME |
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case EAI_NODATA : return "No address associated with hostname"; |
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#endif |
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case EAI_NONAME : return "The name does not resolve for the supplied parameters"; |
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case EAI_SERVICE: return "servname not supported for ai_socktype"; |
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case EAI_SOCKTYPE: return "ai_socktype not supported"; |
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} |
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return "Unknown error"; |
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} |
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#endif /* !HAVE_GETADDRINFO || HAVE_WINSOCK2_H */ |
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int ff_socket_nonblock(int socket, int enable) |
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{ |
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#if HAVE_WINSOCK2_H |
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u_long param = enable; |
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return ioctlsocket(socket, FIONBIO, ¶m); |
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#else |
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if (enable) |
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return fcntl(socket, F_SETFL, fcntl(socket, F_GETFL) | O_NONBLOCK); |
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else |
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return fcntl(socket, F_SETFL, fcntl(socket, F_GETFL) & ~O_NONBLOCK); |
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#endif |
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} |
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#if !HAVE_POLL_H |
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int ff_poll(struct pollfd *fds, nfds_t numfds, int timeout) |
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{ |
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fd_set read_set; |
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fd_set write_set; |
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fd_set exception_set; |
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nfds_t i; |
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int n; |
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int rc; |
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#if HAVE_WINSOCK2_H |
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if (numfds >= FD_SETSIZE) { |
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errno = EINVAL; |
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return -1; |
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} |
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#endif |
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FD_ZERO(&read_set); |
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FD_ZERO(&write_set); |
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FD_ZERO(&exception_set); |
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n = 0; |
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for(i = 0; i < numfds; i++) { |
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if (fds[i].fd < 0) |
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continue; |
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#if !HAVE_WINSOCK2_H |
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if (fds[i].fd >= FD_SETSIZE) { |
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errno = EINVAL; |
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return -1; |
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} |
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#endif |
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if (fds[i].events & POLLIN) FD_SET(fds[i].fd, &read_set); |
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if (fds[i].events & POLLOUT) FD_SET(fds[i].fd, &write_set); |
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if (fds[i].events & POLLERR) FD_SET(fds[i].fd, &exception_set); |
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if (fds[i].fd >= n) |
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n = fds[i].fd + 1; |
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}; |
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if (n == 0) |
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/* Hey!? Nothing to poll, in fact!!! */ |
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return 0; |
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if (timeout < 0) |
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rc = select(n, &read_set, &write_set, &exception_set, NULL); |
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else { |
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struct timeval tv; |
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tv.tv_sec = timeout / 1000; |
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tv.tv_usec = 1000 * (timeout % 1000); |
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rc = select(n, &read_set, &write_set, &exception_set, &tv); |
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}; |
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if (rc < 0) |
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return rc; |
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for(i = 0; i < numfds; i++) { |
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fds[i].revents = 0; |
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if (FD_ISSET(fds[i].fd, &read_set)) fds[i].revents |= POLLIN; |
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if (FD_ISSET(fds[i].fd, &write_set)) fds[i].revents |= POLLOUT; |
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if (FD_ISSET(fds[i].fd, &exception_set)) fds[i].revents |= POLLERR; |
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}; |
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return rc; |
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} |
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#endif /* HAVE_POLL_H */ |
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#endif /* CONFIG_NETWORK */
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