0,0 → 1,340 |
/* |
* various OS-feature replacement utilities |
* 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 CONFIG_NETWORK |
#include <fcntl.h> |
#if !HAVE_POLL_H |
#if HAVE_SYS_TIME_H |
#include <sys/time.h> |
#endif |
#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> |
|
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 HAVE_GETSERVBYPORT |
if (!(flags & NI_NUMERICSERV)) |
ent = getservbyport(sin->sin_port, flags & NI_DGRAM ? "udp" : "tcp"); |
#endif |
|
if (ent) |
snprintf(serv, servlen, "%s", ent->s_name); |
else |
snprintf(serv, servlen, "%d", ntohs(sin->sin_port)); |
} |
|
return 0; |
} |
#endif /* !HAVE_GETADDRINFO */ |
|
#if !HAVE_GETADDRINFO || HAVE_WINSOCK2_H |
const char *ff_gai_strerror(int ecode) |
{ |
switch (ecode) { |
case EAI_AGAIN: |
return "Temporary failure in name resolution"; |
case EAI_BADFLAGS: |
return "Invalid flags for ai_flags"; |
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_MEMORY: |
return "Memory allocation failure"; |
#if EAI_NODATA != EAI_NONAME |
case EAI_NODATA: |
return "No address associated with hostname"; |
#endif |
case EAI_NONAME: |
return "The name does not resolve for the supplied parameters"; |
case EAI_SERVICE: |
return "servname not supported for ai_socktype"; |
case EAI_SOCKTYPE: |
return "ai_socktype not supported"; |
} |
|
return "Unknown error"; |
} |
#endif /* !HAVE_GETADDRINFO || HAVE_WINSOCK2_H */ |
|
int ff_socket_nonblock(int socket, int enable) |
{ |
#if HAVE_WINSOCK2_H |
u_long param = enable; |
return ioctlsocket(socket, FIONBIO, ¶m); |
#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 ff_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 = 0; |
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 + 1; |
} |
|
if (n == 0) |
/* Hey!? Nothing to poll, in fact!!! */ |
return 0; |
|
if (timeout < 0) { |
rc = select(n, &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, &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 */ |