/* FCE Ultra - NES/Famicom Emulator * * Copyright notice for this file: * Copyright (C) 2002 Xodnizel * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include #include #include #include #include //#include //mbg merge 7/17/06 removed #include #include "types.h" #include "netplay.h" #include "fceu.h" #include "general.h" #include "state.h" #include "cheat.h" #include "input.h" #include "endian.h" int FCEUnetplay=0; static uint8 netjoy[4]; /* Controller cache. */ static int numlocal; static int netdivisor; static int netdcount; /* NetError should only be called after a FCEUD_*Data function returned 0, in the function that called FCEUD_*Data, to prevent it from being called twice. */ static void NetError(void) { FCEU_DispMessage("Network error/connection lost!"); FCEUD_NetworkClose(); } void FCEUI_NetplayStop(void) { if(FCEUnetplay) { FCEUnetplay = 0; FCEU_FlushGameCheats(0,1); /* Don't save netplay cheats. */ FCEU_LoadGameCheats(0); /* Reload our original cheats. */ } else puts("Check your code!"); } int FCEUI_NetplayStart(int nlocal, int divisor) { FCEU_FlushGameCheats(0, 0); /* Save our pre-netplay cheats. */ FCEU_LoadGameCheats(0); /* Load them again, for pre-multiplayer action. */ FCEUnetplay = 1; memset(netjoy,0,sizeof(netjoy)); numlocal = nlocal; netdivisor = divisor; netdcount = 0; return(1); } int FCEUNET_SendCommand(uint8 cmd, uint32 len) { //mbg merge 7/17/06 changed to alloca //uint8 buf[numlocal + 1 + 4]; uint8 *buf = (uint8*)alloca(numlocal+1+4); buf[0] = 0xFF; FCEU_en32lsb(&buf[numlocal], len); buf[numlocal + 4] = cmd; if(!FCEUD_SendData(buf,numlocal + 1 + 4)) { NetError(); return(0); } return(1); } void FCEUI_NetplayText(uint8 *text) { uint32 len; len = strlen((char*)text); //mbg merge 7/17/06 added cast if(!FCEUNET_SendCommand(FCEUNPCMD_TEXT,len)) return; if(!FCEUD_SendData(text,len)) NetError(); } int FCEUNET_SendFile(uint8 cmd, char *fn) { uint32 len; uLongf clen; char *buf, *cbuf; FILE *fp; struct stat sb; if(!(fp=FCEUD_UTF8fopen(fn,"rb"))) return(0); fstat(fileno(fp),&sb); len = sb.st_size; buf = (char*)malloc(len); //mbg merge 7/17/06 added cast fread(buf, 1, len, fp); fclose(fp); cbuf = (char*)malloc(4 + len + len / 1000 + 12); //mbg merge 7/17/06 added cast FCEU_en32lsb((uint8*)cbuf, len); //mbg merge 7/17/06 added cast compress2((uint8*)cbuf + 4, &clen, (uint8*)buf, len, 7); //mbg merge 7/17/06 added casts free(buf); //printf("Sending file: %s, %d, %d\n",fn,len,clen); len = clen + 4; if(!FCEUNET_SendCommand(cmd,len)) { free(cbuf); return(0); } if(!FCEUD_SendData(cbuf, len)) { NetError(); free(cbuf); return(0); } free(cbuf); return(1); } static FILE *FetchFile(uint32 remlen) { uint32 clen = remlen; char *cbuf; uLongf len; char *buf; FILE *fp; char *fn; if(clen > 500000) // Sanity check { NetError(); return(0); } //printf("Receiving file: %d...\n",clen); fn = FCEU_MakeFName(FCEUMKF_NPTEMP,0,0); if((fp = fopen(fn,"w+b"))) { cbuf = (char *)malloc(clen); //mbg merge 7/17/06 added cast if(!FCEUD_RecvData(cbuf, clen)) { NetError(); unlink(fn); fclose(fp); free(cbuf); free(fn); return(0); } len = FCEU_de32lsb((uint8*)cbuf); //mbg merge 7/17/06 added cast if(len > 500000) // Another sanity check { NetError(); unlink(fn); fclose(fp); free(cbuf); free(fn); return(0); } buf = (char *)malloc(len); //mbg merge 7/17/06 added cast uncompress((uint8*)buf, &len, (uint8*)cbuf + 4, clen - 4); //mbg merge 7/17/06 added casts fwrite(buf, 1, len, fp); free(buf); fseek(fp, 0, SEEK_SET); unlink(fn); free(fn); return(fp); } free(fn); return(0); } void NetplayUpdate(uint8 *joyp) { static uint8 buf[5]; /* 4 play states, + command/extra byte */ static uint8 joypb[4]; memcpy(joypb,joyp,4); /* This shouldn't happen, but just in case. 0xFF is used as a command escape elsewhere. */ if(joypb[0] == 0xFF) joypb[0] = 0xF; if(!netdcount) if(!FCEUD_SendData(joypb,numlocal)) { NetError(); return; } if(!netdcount) do { if(!FCEUD_RecvData(buf,5)) { NetError(); return; } switch(buf[4]) { default: FCEU_DoSimpleCommand(buf[4]);break; case FCEUNPCMD_TEXT: { uint8 *tbuf; uint32 len = FCEU_de32lsb(buf); if(len > 100000) // Insanity check! { NetError(); return; } tbuf = (uint8*)malloc(len + 1); //mbg merge 7/17/06 added cast tbuf[len] = 0; if(!FCEUD_RecvData(tbuf, len)) { NetError(); free(tbuf); return; } FCEUD_NetplayText(tbuf); free(tbuf); } break; case FCEUNPCMD_SAVESTATE: { char *fn; FILE *fp; /* Send the cheats first, then the save state, since there might be a frame or two in between the two sendfile commands on the server side. */ fn = FCEU_MakeFName(FCEUMKF_CHEAT,0,0); //if(! FCEUNET_SendFile(FCEUNPCMD_LOADCHEATS,fn); // { // free(fn); // return; // } free(fn); if(!FCEUnetplay) return; fn = FCEU_MakeFName(FCEUMKF_NPTEMP,0,0); fp = fopen(fn, "wb"); if(FCEUSS_SaveFP(fp)) { fclose(fp); if(!FCEUNET_SendFile(FCEUNPCMD_LOADSTATE, fn)) { unlink(fn); free(fn); return; } unlink(fn); free(fn); } else { fclose(fp); FCEUD_PrintError("File error. (K)ill, (M)aim, (D)estroy? Now!"); unlink(fn); free(fn); return; } } break; case FCEUNPCMD_LOADCHEATS: { FILE *fp = FetchFile(FCEU_de32lsb(buf)); if(!fp) return; FCEU_FlushGameCheats(0,1); FCEU_LoadGameCheats(fp); } break; case FCEUNPCMD_LOADSTATE: { FILE *fp = FetchFile(FCEU_de32lsb(buf)); if(!fp) return; if(FCEUSS_LoadFP(fp,1)) { fclose(fp); FCEU_DispMessage("Remote state loaded."); } else FCEUD_PrintError("File error. (K)ill, (M)aim, (D)estroy?"); } break; } } while(buf[4]); netdcount=(netdcount+1)%netdivisor; memcpy(netjoy,buf,4); *(uint32 *)joyp=*(uint32 *)netjoy; }