| 1 | /* FCE Ultra - NES/Famicom Emulator |
| 2 | * |
| 3 | * Copyright notice for this file: |
| 4 | * Copyright (C) 2001 LULU |
| 5 | * Copyright (C) 2002 Ben Parnell |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; either version 2 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License |
| 18 | * along with this program; if not, write to the Free Software |
| 19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 20 | */ |
| 21 | |
| 22 | #include "sdl.h" |
| 23 | #include <SDL/SDL_net.h> |
| 24 | #include "sdl-netplay.h" |
| 25 | |
| 26 | char *netplayhost=0; |
| 27 | |
| 28 | static int tonowait; |
| 29 | |
| 30 | int Port=0xFCE; |
| 31 | int FDnetplay=0; |
| 32 | |
| 33 | |
| 34 | static SDLNet_SocketSet socketset = NULL; |
| 35 | static TCPsocket tcpsock = NULL, servsock = NULL; |
| 36 | |
| 37 | void cleanup(void) |
| 38 | { |
| 39 | if (tcpsock != NULL) { |
| 40 | SDLNet_TCP_DelSocket(socketset, tcpsock); |
| 41 | SDLNet_TCP_Close(tcpsock); |
| 42 | tcpsock = NULL; |
| 43 | } |
| 44 | if (servsock != NULL) { |
| 45 | SDLNet_TCP_DelSocket(socketset, servsock); |
| 46 | SDLNet_TCP_Close(servsock); |
| 47 | servsock = NULL; |
| 48 | } |
| 49 | if (socketset != NULL) { |
| 50 | SDLNet_FreeSocketSet(socketset); |
| 51 | socketset = NULL; |
| 52 | } |
| 53 | } |
| 54 | |
| 55 | int FCEUD_NetworkConnect(void) |
| 56 | { |
| 57 | IPaddress serverIP; |
| 58 | |
| 59 | tonowait=0; |
| 60 | |
| 61 | if (netplay == 2) { |
| 62 | /* client */ |
| 63 | printf("connecting to %s\n", netplayhost); |
| 64 | |
| 65 | SDLNet_ResolveHost(&serverIP, netplayhost, Port); |
| 66 | if (serverIP.host == INADDR_NONE) { |
| 67 | fprintf(stderr, "Couldn't connected to %s\n", netplayhost); |
| 68 | return -1; |
| 69 | } else { |
| 70 | tcpsock = SDLNet_TCP_Open(&serverIP); |
| 71 | if (tcpsock == NULL) { |
| 72 | fprintf(stderr, "Couldn't connected to %s\n", netplayhost); |
| 73 | return -1; |
| 74 | } |
| 75 | } |
| 76 | printf("connected to %s\n", netplayhost); |
| 77 | |
| 78 | socketset = SDLNet_AllocSocketSet(1); |
| 79 | if (socketset == NULL) { |
| 80 | fprintf(stderr, "Couldn't create socket set: %s\n", |
| 81 | SDLNet_GetError()); |
| 82 | return -1; |
| 83 | } |
| 84 | SDLNet_TCP_AddSocket(socketset, tcpsock); |
| 85 | |
| 86 | return 1; |
| 87 | } else { |
| 88 | /* server */ |
| 89 | |
| 90 | SDLNet_ResolveHost(&serverIP, NULL, Port); |
| 91 | printf("Server IP: %x, %d\n", serverIP.host, serverIP.port); |
| 92 | servsock = SDLNet_TCP_Open(&serverIP); |
| 93 | if (servsock == NULL) { |
| 94 | cleanup(); |
| 95 | fprintf(stderr, "Couldn't create server socket: %s\n", |
| 96 | SDLNet_GetError()); |
| 97 | return -1; |
| 98 | } |
| 99 | |
| 100 | socketset = SDLNet_AllocSocketSet(2); |
| 101 | if (socketset == NULL) { |
| 102 | fprintf(stderr, "Couldn't create socket set: %s\n", |
| 103 | SDLNet_GetError()); |
| 104 | return -1; |
| 105 | } |
| 106 | SDLNet_TCP_AddSocket(socketset, servsock); |
| 107 | |
| 108 | if (SDLNet_CheckSockets(socketset, ~0)) { |
| 109 | tcpsock = SDLNet_TCP_Accept(servsock); |
| 110 | if (tcpsock == NULL) { |
| 111 | return -1; |
| 112 | } |
| 113 | SDLNet_TCP_AddSocket(socketset, tcpsock); |
| 114 | |
| 115 | printf("OK, connected\n"); |
| 116 | return 1; |
| 117 | } |
| 118 | } |
| 119 | |
| 120 | return -1; |
| 121 | } |
| 122 | |
| 123 | void FCEUD_NetworkClose(void) |
| 124 | { |
| 125 | cleanup(); |
| 126 | } |
| 127 | |
| 128 | int FCEUD_NetworkRecvData(uint8 *data, uint32 len, int block) |
| 129 | { |
| 130 | if(block) |
| 131 | { |
| 132 | if(SDLNet_TCP_Recv(tcpsock, (void *) data, len)!=len) |
| 133 | { |
| 134 | cleanup(); |
| 135 | return(0); |
| 136 | } |
| 137 | switch(SDLNet_CheckSockets(socketset,0)) |
| 138 | { |
| 139 | case -1:return(0); |
| 140 | case 0:NoWaiting&=~2;tonowait=0;break; |
| 141 | default:if(tonowait>=3) |
| 142 | NoWaiting|=2; |
| 143 | else tonowait++; |
| 144 | break; |
| 145 | } |
| 146 | return(1); |
| 147 | } |
| 148 | else |
| 149 | { |
| 150 | int t=SDLNet_CheckSockets(socketset,0); |
| 151 | if(t<0) return(0); |
| 152 | if(!t) return(-1); |
| 153 | return(SDLNet_TCP_Recv(tcpsock, (void *) data, len)==len); |
| 154 | } |
| 155 | } |
| 156 | |
| 157 | /* 0 on failure, 1 on success. This function should always block. */ |
| 158 | int FCEUD_NetworkSendData(uint8 *Value, uint32 len) |
| 159 | { |
| 160 | if (tcpsock) |
| 161 | return(SDLNet_TCP_Send(tcpsock, (void *) Value, len)==len); |
| 162 | return 0; |
| 163 | } |