/* * PARSEC - Utility Functions - shared * * $Author: uberlinuxguy $ - $Date: 2004/09/15 12:25:42 $ * * Orginally written by: * Copyright (c) Clemens Beer 2002 * Copyright (c) Markus Hadwiger 1996-2000 * * 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 */ // C library #include #include #include #include // compilation flags/debug support #include "config.h" #include "debug.h" // general definitions #include "general.h" #include "objstruc.h" // global externals #include "globals.h" // subsystem headers #include "net_defs.h" //#include "vid_defs.h" // drawing subsystem //#include "d_bmap.h" //#include "d_font.h" // network code config #include "net_conf.h" // local module header #include "net_util.h" // proprietary module headers //#include "e_color.h" //#include "net_swap.h" //#include "sys_bind.h" // lookup table for fast CRC32 calculation ------------------------------------ // static const dword crc32lookup[ 256 ] = { 0x00000000ul, 0x77073096ul, 0xEE0E612Cul, 0x990951BAul, 0x076DC419ul, 0x706AF48Ful, 0xE963A535ul, 0x9E6495A3ul, 0x0EDB8832ul, 0x79DCB8A4ul, 0xE0D5E91Eul, 0x97D2D988ul, 0x09B64C2Bul, 0x7EB17CBDul, 0xE7B82D07ul, 0x90BF1D91ul, 0x1DB71064ul, 0x6AB020F2ul, 0xF3B97148ul, 0x84BE41DEul, 0x1ADAD47Dul, 0x6DDDE4EBul, 0xF4D4B551ul, 0x83D385C7ul, 0x136C9856ul, 0x646BA8C0ul, 0xFD62F97Aul, 0x8A65C9ECul, 0x14015C4Ful, 0x63066CD9ul, 0xFA0F3D63ul, 0x8D080DF5ul, 0x3B6E20C8ul, 0x4C69105Eul, 0xD56041E4ul, 0xA2677172ul, 0x3C03E4D1ul, 0x4B04D447ul, 0xD20D85FDul, 0xA50AB56Bul, 0x35B5A8FAul, 0x42B2986Cul, 0xDBBBC9D6ul, 0xACBCF940ul, 0x32D86CE3ul, 0x45DF5C75ul, 0xDCD60DCFul, 0xABD13D59ul, 0x26D930ACul, 0x51DE003Aul, 0xC8D75180ul, 0xBFD06116ul, 0x21B4F4B5ul, 0x56B3C423ul, 0xCFBA9599ul, 0xB8BDA50Ful, 0x2802B89Eul, 0x5F058808ul, 0xC60CD9B2ul, 0xB10BE924ul, 0x2F6F7C87ul, 0x58684C11ul, 0xC1611DABul, 0xB6662D3Dul, 0x76DC4190ul, 0x01DB7106ul, 0x98D220BCul, 0xEFD5102Aul, 0x71B18589ul, 0x06B6B51Ful, 0x9FBFE4A5ul, 0xE8B8D433ul, 0x7807C9A2ul, 0x0F00F934ul, 0x9609A88Eul, 0xE10E9818ul, 0x7F6A0DBBul, 0x086D3D2Dul, 0x91646C97ul, 0xE6635C01ul, 0x6B6B51F4ul, 0x1C6C6162ul, 0x856530D8ul, 0xF262004Eul, 0x6C0695EDul, 0x1B01A57Bul, 0x8208F4C1ul, 0xF50FC457ul, 0x65B0D9C6ul, 0x12B7E950ul, 0x8BBEB8EAul, 0xFCB9887Cul, 0x62DD1DDFul, 0x15DA2D49ul, 0x8CD37CF3ul, 0xFBD44C65ul, 0x4DB26158ul, 0x3AB551CEul, 0xA3BC0074ul, 0xD4BB30E2ul, 0x4ADFA541ul, 0x3DD895D7ul, 0xA4D1C46Dul, 0xD3D6F4FBul, 0x4369E96Aul, 0x346ED9FCul, 0xAD678846ul, 0xDA60B8D0ul, 0x44042D73ul, 0x33031DE5ul, 0xAA0A4C5Ful, 0xDD0D7CC9ul, 0x5005713Cul, 0x270241AAul, 0xBE0B1010ul, 0xC90C2086ul, 0x5768B525ul, 0x206F85B3ul, 0xB966D409ul, 0xCE61E49Ful, 0x5EDEF90Eul, 0x29D9C998ul, 0xB0D09822ul, 0xC7D7A8B4ul, 0x59B33D17ul, 0x2EB40D81ul, 0xB7BD5C3Bul, 0xC0BA6CADul, 0xEDB88320ul, 0x9ABFB3B6ul, 0x03B6E20Cul, 0x74B1D29Aul, 0xEAD54739ul, 0x9DD277AFul, 0x04DB2615ul, 0x73DC1683ul, 0xE3630B12ul, 0x94643B84ul, 0x0D6D6A3Eul, 0x7A6A5AA8ul, 0xE40ECF0Bul, 0x9309FF9Dul, 0x0A00AE27ul, 0x7D079EB1ul, 0xF00F9344ul, 0x8708A3D2ul, 0x1E01F268ul, 0x6906C2FEul, 0xF762575Dul, 0x806567CBul, 0x196C3671ul, 0x6E6B06E7ul, 0xFED41B76ul, 0x89D32BE0ul, 0x10DA7A5Aul, 0x67DD4ACCul, 0xF9B9DF6Ful, 0x8EBEEFF9ul, 0x17B7BE43ul, 0x60B08ED5ul, 0xD6D6A3E8ul, 0xA1D1937Eul, 0x38D8C2C4ul, 0x4FDFF252ul, 0xD1BB67F1ul, 0xA6BC5767ul, 0x3FB506DDul, 0x48B2364Bul, 0xD80D2BDAul, 0xAF0A1B4Cul, 0x36034AF6ul, 0x41047A60ul, 0xDF60EFC3ul, 0xA867DF55ul, 0x316E8EEFul, 0x4669BE79ul, 0xCB61B38Cul, 0xBC66831Aul, 0x256FD2A0ul, 0x5268E236ul, 0xCC0C7795ul, 0xBB0B4703ul, 0x220216B9ul, 0x5505262Ful, 0xC5BA3BBEul, 0xB2BD0B28ul, 0x2BB45A92ul, 0x5CB36A04ul, 0xC2D7FFA7ul, 0xB5D0CF31ul, 0x2CD99E8Bul, 0x5BDEAE1Dul, 0x9B64C2B0ul, 0xEC63F226ul, 0x756AA39Cul, 0x026D930Aul, 0x9C0906A9ul, 0xEB0E363Ful, 0x72076785ul, 0x05005713ul, 0x95BF4A82ul, 0xE2B87A14ul, 0x7BB12BAEul, 0x0CB61B38ul, 0x92D28E9Bul, 0xE5D5BE0Dul, 0x7CDCEFB7ul, 0x0BDBDF21ul, 0x86D3D2D4ul, 0xF1D4E242ul, 0x68DDB3F8ul, 0x1FDA836Eul, 0x81BE16CDul, 0xF6B9265Bul, 0x6FB077E1ul, 0x18B74777ul, 0x88085AE6ul, 0xFF0F6A70ul, 0x66063BCAul, 0x11010B5Cul, 0x8F659EFFul, 0xF862AE69ul, 0x616BFFD3ul, 0x166CCF45ul, 0xA00AE278ul, 0xD70DD2EEul, 0x4E048354ul, 0x3903B3C2ul, 0xA7672661ul, 0xD06016F7ul, 0x4969474Dul, 0x3E6E77DBul, 0xAED16A4Aul, 0xD9D65ADCul, 0x40DF0B66ul, 0x37D83BF0ul, 0xA9BCAE53ul, 0xDEBB9EC5ul, 0x47B2CF7Ful, 0x30B5FFE9ul, 0xBDBDF21Cul, 0xCABAC28Aul, 0x53B39330ul, 0x24B4A3A6ul, 0xBAD03605ul, 0xCDD70693ul, 0x54DE5729ul, 0x23D967BFul, 0xB3667A2Eul, 0xC4614AB8ul, 0x5D681B02ul, 0x2A6F2B94ul, 0xB40BBE37ul, 0xC30C8EA1ul, 0x5A05DF1Bul, 0x2D02EF8Dul, }; // fast CRC calculation ------------------------------------------------------- // dword NET_CalcCRC( void* buf, size_t len ) { dword crc32 = ~0; for( size_t i = 0; i < len; i++ ) { byte lookup = (byte)( (crc32 ^ (((byte *)buf)[ i ])) & 0xff ); crc32 = ( (crc32 >> 8) & 0x00fffffful ) ^ crc32lookup[ lookup ]; } crc32 = ~crc32; return crc32; } // encrypt payload section of packet ------------------------------------------ // void NET_EncryptData( void* packet, size_t psize ) { //NOTE: // this function is used by NETs_HandleOutPacket{_DEMO} after packing, // swapping and CRC calculation //FIXME: evt. we change the Protocol field, to indicate, that we have an // encrypted packet //strcpy( packet->Signature, net_cryp_signature ); extern float fsin_tab[]; // leave signature unencoded byte *block = (byte *) packet; //FIXME: exclude MessageId from encryption and use it as a basepointer // into the fsin_tab for ( size_t epos = 0; epos < psize; epos++ ) { // lsbs of mantissa have highest frequency byte xorkey = (byte)DW32( fsin_tab[ epos ] ) & 0xff; block[ epos ] ^= xorkey; } } // decrypt payload section of packet ------------------------------------------ // void NET_DecryptData( void* packet, size_t psize ) { //NOTE: // this function is used by NETs_HandleInPacket{_DEMO} before CRC is checked // and packet is swapped and unpacked //FIXME: evt. we must check, whether this is an encrypted packet at all //if ( strcmp( packet->Signature, net_cryp_signature ) != 0 ) { // return; //} // reset signature //strcpy( packet->Signature, net_game_signature ); extern float fsin_tab[]; // skip signature byte *block = (byte *) packet; for ( size_t epos = 0; epos < psize; epos++ ) { // lsbs of mantissa have highest frequency byte xorkey = (byte)DW32( fsin_tab[ epos ] ) & 0xff; block[ epos ] ^= xorkey; } } #ifdef PACKETINFO_WRITING_AVAILABLE // fp to which PrInf_ functions write ----------------------------------------- // FILE *dest_fp_PacketInfo; // output wrapper function ---------------------------------------------------- // int NET_PacketInfo( const char *bstr, ... ) { va_list ap; va_start( ap, bstr ); // simply write to text-file int rc = vfprintf( dest_fp_PacketInfo, bstr, ap ); va_end( ap ); return rc; } // print remote-event info ---------------------------------------------------- // void PrInf_CREATEOBJECT( RE_Header *relist ) { RE_CreateObject *re_co = (RE_CreateObject *) relist; NET_PacketInfo( ";-- objclass=%d, hostobjid=%d, flags=%0x\n", re_co->ObjectClass, re_co->HostObjId, re_co->Flags ); } // print remote-event info ---------------------------------------------------- // void PrInf_CREATELASER( RE_Header *relist ) { RE_CreateLaser *re_cl = (RE_CreateLaser *) relist; NET_PacketInfo( ";-- objclass=%d, hostobjid=%d\n", re_cl->ObjectClass, re_cl->HostObjId ); } // print remote-event info ---------------------------------------------------- // void PrInf_CREATEMISSILE( RE_Header *relist ) { RE_CreateMissile *re_cm = (RE_CreateMissile *) relist; NET_PacketInfo( ";-- objclass=%d, hostobjid=%d, target=%d\n", re_cm->ObjectClass, re_cm->HostObjId, re_cm->TargetHostObjId ); } // print remote-event info ---------------------------------------------------- // void PrInf_CREATEEXTRA( RE_Header *relist ) { RE_CreateExtra *re_ce = (RE_CreateExtra *) relist; NET_PacketInfo( ";-- extraindex=%d, hostobjid=%d\n", re_ce->ExtraIndex, re_ce->HostObjId ); } // print remote-event info ---------------------------------------------------- // void PrInf_CREATEEXTRA2( RE_Header *relist ) { RE_CreateExtra2 *re_ce = (RE_CreateExtra2 *) relist; NET_PacketInfo( ";-- extraindex=%d, hostobjid=%d\n", re_ce->ExtraIndex, re_ce->HostObjId ); } void PrInf_CREATEMINE( RE_Header *relist ) { RE_CreateMine *re_ce = (RE_CreateMine *) relist; NET_PacketInfo( ";-- extraindex=%d, hostobjid=%d\n", re_ce->ExtraIndex, re_ce->HostObjId ); } // print remote-event info ---------------------------------------------------- // void PrInf_IPV4SERVERINFO( RE_Header *relist ) { RE_IPv4ServerInfo* re_si = (RE_IPv4ServerInfo *) relist; //FIXME: include "net_util_sv.h" //NET_PacketInfo( ";-- node: %s\n", NODE_Print( (node_t*)re_ipsi->node ) ); } // print remote-event info ---------------------------------------------------- // void PrInf_SERVERLINKINFO( RE_Header *relist ) { RE_ServerLinkInfo* re_sli = (RE_ServerLinkInfo *) relist; NET_PacketInfo( ";-- index1=%d, index2=%d\n", re_sli->serverid1, re_sli->serverid2 ); } // print remote-event info ---------------------------------------------------- // void PrInf_MAPOBJECT( RE_Header *relist ) { RE_MapObject* re_mo = (RE_MapObject *) relist; NET_PacketInfo( ";-- map_objectid=%d, name=%s, xpos=%d, ypos=%d, w=%d, h=%d, texname=%s\n", re_mo->map_objectid, re_mo->name, re_mo->xpos, re_mo->ypos, re_mo->w, re_mo->h, re_mo->texname ); } // print remote-event info ---------------------------------------------------- // void PrInf_STARGATE( RE_Header *relist ) { RE_Stargate* re_stg = (RE_Stargate *) relist; //FIXME: more information NET_PacketInfo( ";-- serverid=%d\n", re_stg->serverid ); } // print remote-event info ---------------------------------------------------- // void PrInf_KILLOBJECT( RE_Header *relist ) { RE_KillObject *re_ko = (RE_KillObject *) relist; NET_PacketInfo( ";-- list=%d, flags=%d, hostobjid=%d\n", re_ko->ListId, re_ko->Flags, re_ko->HostObjId ); } // print remote-event info ---------------------------------------------------- // void PrInf_SENDTEXT( RE_Header *relist ) { RE_SendText *re_st = (RE_SendText *) relist; NET_PacketInfo( ";-- text=\"%s\"\n", re_st->TextStart ); } // print remote-event info ---------------------------------------------------- // void PrInf_PLAYERNAME( RE_Header *relist ) { RE_PlayerName *re_pn = (RE_PlayerName *) relist; NET_PacketInfo( ";-- name=\"%s\"\n", re_pn->PlayerName ); } // print remote-event info ---------------------------------------------------- // void PrInf_PARTICLEOBJECT( RE_Header *relist ) { RE_ParticleObject *re_po = (RE_ParticleObject *) relist; NET_PacketInfo( ";-- pobjtype=%d\n", re_po->ObjectType ); } // print remote-event info ---------------------------------------------------- // void PrInf_PLAYERLIST( RE_Header *relist ) { //TODO: } // print remote-event info ---------------------------------------------------- // void PrInf_CONNECTQUEUE( RE_Header *relist ) { //TODO: } // print remote-event info ---------------------------------------------------- // void PrInf_WEAPONSTATE( RE_Header *relist ) { //TODO: } // print remote-event info ---------------------------------------------------- // void PrInf_STATESYNC( RE_Header *relist ) { //TODO: } // print remote-event info ---------------------------------------------------- // void PrInf_CREATESWARM( RE_Header *relist ) { //TODO: } // print remote-event info ---------------------------------------------------- // void PrInf_CREATEEMP( RE_Header *relist ) { //TODO: } // print remote-event info ---------------------------------------------------- // void PrInf_OWNERSECTION( RE_Header *relist ) { //TODO: } // print remote-event info ---------------------------------------------------- // void PrInf_PLAYERSTATUS( RE_Header *relist ) { //TODO: } // print remote-event info ---------------------------------------------------- // void PrInf_PLAYERANDSHIPSTATUS( RE_Header *relist ) { //TODO: } // print remote-event info ---------------------------------------------------- // void PrInf_KILLSTATS( RE_Header *relist ) { //TODO: } // print remote-event info ---------------------------------------------------- // void PrInf_GAMESTATE( RE_Header *relist ) { //TODO: } // print remote-event info ---------------------------------------------------- // void PrInf_COMMANDINFO( RE_Header* relist ) { //TODO: } // print remote-event info ---------------------------------------------------- // void PrInf_CLIENTINFO( RE_Header* relist ) { //TODO: } // list of remote-event names ------------------------------------------------- // static const char *re_names[] = { "RE_EMPTY", "RE_DELETED", "RE_CREATEOBJECT", "RE_CREATELASER", "RE_CREATEMISSILE", "RE_CREATEEXTRA", "RE_KILLOBJECT", "RE_SENDTEXT", "RE_PLAYERNAME", "RE_PARTICLEOBJECT", "RE_PLAYERLIST", "RE_CONNECTQUEUE", "RE_WEAPONSTATE", "RE_STATESYNC", "RE_CREATESWARM", "RE_CREATEEMP", "RE_OWNERSECTION", "RE_PLAYERSTATUS", "RE_PLAYERANDSHIPSTATUS", "RE_KILLSTATS", "RE_GAMESTATE", "RE_COMMANDINFO", "RE_CLIENTINFO", "RE_CREATEEXTRA2", "RE_IPV4SERVERINFO", "RE_SERVERLINKINFO", "RE_MAPOBJECT", "RE_STARGATE", "RE_CREATEMINE", }; // list of remote-event info printing functions ------------------------------- // static void (*re_funcs[])(RE_Header*) = { NULL, NULL, PrInf_CREATEOBJECT, PrInf_CREATELASER, PrInf_CREATEMISSILE, PrInf_CREATEEXTRA, PrInf_KILLOBJECT, PrInf_SENDTEXT, PrInf_PLAYERNAME, PrInf_PARTICLEOBJECT, PrInf_PLAYERLIST, PrInf_CONNECTQUEUE, PrInf_WEAPONSTATE, PrInf_STATESYNC, PrInf_CREATESWARM, PrInf_CREATEEMP, PrInf_OWNERSECTION, PrInf_PLAYERSTATUS, PrInf_PLAYERANDSHIPSTATUS, PrInf_KILLSTATS, PrInf_GAMESTATE, PrInf_COMMANDINFO, PrInf_CLIENTINFO, PrInf_CREATEEXTRA2, PrInf_IPV4SERVERINFO, PrInf_SERVERLINKINFO, PrInf_MAPOBJECT, PrInf_STARGATE, }; #ifndef PARSEC_MASTER // write verbose RE list info as a comment to recording file ------------------ // void NET_RmEvList_WriteInfo( FILE* fp, RE_Header* relist ) { ASSERT( fp != NULL ); ASSERT( relist != NULL ); // process remote event list while ( relist->RE_Type != RE_EMPTY ) { if ( relist->RE_Type < RE_NUMEVENTS ) { NET_PacketInfo( ";-- rmev=%d (%s)\n", relist->RE_Type, re_names[ relist->RE_Type ] ); if ( re_funcs[ relist->RE_Type ] != NULL ) (*re_funcs[ relist->RE_Type ])( relist ); } else { NET_PacketInfo( ";** unknown remote-event: %d\n", relist->RE_Type ); } // advance to next event ASSERT( ( relist->RE_BlockSize == RE_BLOCKSIZE_INVALID ) || ( relist->RE_BlockSize == NET_RmEvGetSize( relist ) ) ); relist = (RE_Header *) ( (char *) relist + NET_RmEvGetSize( relist ) ); } } #endif // !PARSEC_MASTER #endif // PACKETINFO_WRITING_AVAILABLE