mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-02 03:06:28 +02:00
a41aebf153
Our poll implementation does not iterate over the pollfd array properly
while setting the revents.
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
(cherry picked from commit 9ac2085dbf
)
307 lines
8.5 KiB
C
307 lines
8.5 KiB
C
/*
|
|
* 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
|
|
#define _DARWIN_C_SOURCE
|
|
|
|
#include "config.h"
|
|
#include "avformat.h"
|
|
#include "os_support.h"
|
|
|
|
#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 */
|