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Diffstat (limited to 'src/libparsec/net_util.cpp')
| -rw-r--r-- | src/libparsec/net_util.cpp | 573 |
1 files changed, 573 insertions, 0 deletions
diff --git a/src/libparsec/net_util.cpp b/src/libparsec/net_util.cpp new file mode 100644 index 0000000..7d2db88 --- /dev/null +++ b/src/libparsec/net_util.cpp @@ -0,0 +1,573 @@ +/* + * PARSEC - Utility Functions - shared + * + * $Author: uberlinuxguy $ - $Date: 2004/09/15 12:25:42 $ + * + * Orginally written by: + * Copyright (c) Clemens Beer <cbx@parsec.org> 2002 + * Copyright (c) Markus Hadwiger <msh@parsec.org> 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 <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <stdarg.h> + +// 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 + + + |