mirror of https://github.com/mpv-player/mpv
257 lines
6.4 KiB
C
257 lines
6.4 KiB
C
/*
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* Network layer for MPlayer
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* by Bertrand BAUDET <bertrand_baudet@yahoo.com>
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* (C) 2001, MPlayer team.
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*/
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <errno.h>
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#include <ctype.h>
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#include <fcntl.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include "config.h"
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#include "mp_msg.h"
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#include "help_mp.h"
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#ifndef HAVE_WINSOCK2
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#include <netdb.h>
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#include <netinet/in.h>
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#include <sys/socket.h>
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#include <arpa/inet.h>
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#define closesocket close
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#else
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#include <winsock2.h>
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#include <ws2tcpip.h>
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#endif
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#include "tcp.h"
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/* IPv6 options */
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int network_prefer_ipv4 = 0;
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// Converts an address family constant to a string
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static const char *af2String(int af) {
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switch (af) {
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case AF_INET: return "AF_INET";
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#ifdef HAVE_AF_INET6
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case AF_INET6: return "AF_INET6";
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#endif
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default: return "Unknown address family!";
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}
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}
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// Connect to a server using a TCP connection, with specified address family
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// return -2 for fatal error, like unable to resolve name, connection timeout...
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// return -1 is unable to connect to a particular port
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static int
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connect2Server_with_af(char *host, int port, int af,int verb) {
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int socket_server_fd;
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int err;
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socklen_t err_len;
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int ret,count = 0;
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fd_set set;
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struct timeval tv;
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union {
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struct sockaddr_in four;
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#ifdef HAVE_AF_INET6
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struct sockaddr_in6 six;
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#endif
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} server_address;
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size_t server_address_size;
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void *our_s_addr; // Pointer to sin_addr or sin6_addr
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struct hostent *hp=NULL;
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char buf[255];
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#ifdef HAVE_WINSOCK2
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u_long val;
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int to;
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#else
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struct timeval to;
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#endif
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socket_server_fd = socket(af, SOCK_STREAM, 0);
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if( socket_server_fd==-1 ) {
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// mp_msg(MSGT_NETWORK,MSGL_ERR,"Failed to create %s socket:\n", af2String(af));
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return TCP_ERROR_FATAL;
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}
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#if defined(SO_RCVTIMEO) && defined(SO_SNDTIMEO)
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#ifdef HAVE_WINSOCK2
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/* timeout in milliseconds */
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to = 10 * 1000;
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#else
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to.tv_sec = 10;
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to.tv_usec = 0;
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#endif
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setsockopt(socket_server_fd, SOL_SOCKET, SO_RCVTIMEO, &to, sizeof(to));
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setsockopt(socket_server_fd, SOL_SOCKET, SO_SNDTIMEO, &to, sizeof(to));
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#endif
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switch (af) {
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case AF_INET: our_s_addr = (void *) &server_address.four.sin_addr; break;
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#ifdef HAVE_AF_INET6
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case AF_INET6: our_s_addr = (void *) &server_address.six.sin6_addr; break;
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#endif
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default:
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mp_msg(MSGT_NETWORK,MSGL_ERR, MSGTR_MPDEMUX_NW_UnknownAF, af);
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return TCP_ERROR_FATAL;
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}
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memset(&server_address, 0, sizeof(server_address));
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#ifndef HAVE_WINSOCK2
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#ifdef USE_ATON
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if (inet_aton(host, our_s_addr)!=1)
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#else
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if (inet_pton(af, host, our_s_addr)!=1)
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#endif
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#else
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if ( inet_addr(host)==INADDR_NONE )
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#endif
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{
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if(verb) mp_msg(MSGT_NETWORK,MSGL_STATUS,MSGTR_MPDEMUX_NW_ResolvingHostForAF, host, af2String(af));
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#ifdef HAVE_GETHOSTBYNAME2
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hp=(struct hostent*)gethostbyname2( host, af );
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#else
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hp=(struct hostent*)gethostbyname( host );
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#endif
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if( hp==NULL ) {
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if(verb) mp_msg(MSGT_NETWORK,MSGL_ERR,MSGTR_MPDEMUX_NW_CantResolv, af2String(af), host);
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return TCP_ERROR_FATAL;
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}
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memcpy( our_s_addr, (void*)hp->h_addr_list[0], hp->h_length );
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}
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#ifdef HAVE_WINSOCK2
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else {
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unsigned long addr = inet_addr(host);
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memcpy( our_s_addr, (void*)&addr, sizeof(addr) );
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}
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#endif
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switch (af) {
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case AF_INET:
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server_address.four.sin_family=af;
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server_address.four.sin_port=htons(port);
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server_address_size = sizeof(server_address.four);
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break;
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#ifdef HAVE_AF_INET6
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case AF_INET6:
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server_address.six.sin6_family=af;
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server_address.six.sin6_port=htons(port);
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server_address_size = sizeof(server_address.six);
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break;
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#endif
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default:
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mp_msg(MSGT_NETWORK,MSGL_ERR, MSGTR_MPDEMUX_NW_UnknownAF, af);
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return TCP_ERROR_FATAL;
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}
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#if defined(USE_ATON) || defined(HAVE_WINSOCK2)
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strncpy( buf, inet_ntoa( *((struct in_addr*)our_s_addr) ), 255);
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#else
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inet_ntop(af, our_s_addr, buf, 255);
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#endif
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if(verb) mp_msg(MSGT_NETWORK,MSGL_STATUS,MSGTR_MPDEMUX_NW_ConnectingToServer, host, buf , port );
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// Turn the socket as non blocking so we can timeout on the connection
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#ifndef HAVE_WINSOCK2
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fcntl( socket_server_fd, F_SETFL, fcntl(socket_server_fd, F_GETFL) | O_NONBLOCK );
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#else
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val = 1;
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ioctlsocket( socket_server_fd, FIONBIO, &val );
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#endif
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if( connect( socket_server_fd, (struct sockaddr*)&server_address, server_address_size )==-1 ) {
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#ifndef HAVE_WINSOCK2
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if( errno!=EINPROGRESS ) {
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#else
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if( (WSAGetLastError() != WSAEINPROGRESS) && (WSAGetLastError() != WSAEWOULDBLOCK) ) {
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#endif
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if(verb) mp_msg(MSGT_NETWORK,MSGL_ERR,MSGTR_MPDEMUX_NW_CantConnect2Server, af2String(af));
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closesocket(socket_server_fd);
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return TCP_ERROR_PORT;
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}
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}
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tv.tv_sec = 0;
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tv.tv_usec = 500000;
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FD_ZERO( &set );
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FD_SET( socket_server_fd, &set );
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// When the connection will be made, we will have a writeable fd
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while((ret = select(socket_server_fd+1, NULL, &set, NULL, &tv)) == 0) {
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if(count > 30 || stream_check_interrupt(500)) {
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if(count > 30)
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mp_msg(MSGT_NETWORK,MSGL_ERR,MSGTR_MPDEMUX_NW_ConnTimeout);
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else
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mp_msg(MSGT_NETWORK,MSGL_V,"Connection interrupted by user\n");
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return TCP_ERROR_TIMEOUT;
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}
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count++;
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FD_ZERO( &set );
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FD_SET( socket_server_fd, &set );
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tv.tv_sec = 0;
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tv.tv_usec = 500000;
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}
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if (ret < 0) mp_msg(MSGT_NETWORK,MSGL_ERR,MSGTR_MPDEMUX_NW_SelectFailed);
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// Turn back the socket as blocking
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#ifndef HAVE_WINSOCK2
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fcntl( socket_server_fd, F_SETFL, fcntl(socket_server_fd, F_GETFL) & ~O_NONBLOCK );
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#else
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val = 0;
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ioctlsocket( socket_server_fd, FIONBIO, &val );
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#endif
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// Check if there were any errors
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err_len = sizeof(int);
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ret = getsockopt(socket_server_fd,SOL_SOCKET,SO_ERROR,&err,&err_len);
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if(ret < 0) {
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mp_msg(MSGT_NETWORK,MSGL_ERR,MSGTR_MPDEMUX_NW_GetSockOptFailed,strerror(errno));
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return TCP_ERROR_FATAL;
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}
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if(err > 0) {
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mp_msg(MSGT_NETWORK,MSGL_ERR,MSGTR_MPDEMUX_NW_ConnectError,strerror(err));
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return TCP_ERROR_PORT;
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}
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return socket_server_fd;
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}
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// Connect to a server using a TCP connection
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// return -2 for fatal error, like unable to resolve name, connection timeout...
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// return -1 is unable to connect to a particular port
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int
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connect2Server(char *host, int port, int verb) {
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#ifdef HAVE_AF_INET6
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int r;
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int s = TCP_ERROR_FATAL;
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r = connect2Server_with_af(host, port, network_prefer_ipv4 ? AF_INET:AF_INET6,verb);
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if (r >= 0) return r;
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s = connect2Server_with_af(host, port, network_prefer_ipv4 ? AF_INET6:AF_INET,verb);
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if (s == TCP_ERROR_FATAL) return r;
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return s;
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#else
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return connect2Server_with_af(host, port, AF_INET,verb);
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#endif
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}
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