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server.cpp
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server.cpp
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/*
* server.cpp
*
* Copyright (C) 1999, Ben Swartzlander
* This file is part of Q2BotCore.
* For conditions of distribution and use,
* see the accompanying README file.
*/
#include "util.h"
#include "network.h"
#include <fcntl.h>
#include <stdio.h>
#if WIN32
# include <io.h>
# include <windows.h>
#else
# include <unistd.h>
# include <pthread.h>
# define O_BINARY 0
#endif
#ifdef __linux__
# define VERSION_STRING "q2bot.so for Linux - v0.97 (2004/06/14)\n"
#elif __APPLE__
# define VERSION_STRING "q2bot.dylib for MacOSX - v0.97 (2006/06/20\n"
#elif WIN32
# define VERSION_STRING "q2bot.dll for Windows - v0.97 (2004/06/14)\n"
#endif
typedef char configstring_t[64];
typedef struct {
vec3_t angles;
vec3_t origin;
vec3_t velocity;
int gunindex;
int stats[32];
} iplayer_t;
typedef struct {
int timestamp;
iplayer_t player;
entity_t entities[1024];
} igamestate_t;
typedef struct {
int timestamp;
vec3_t origin;
} time_point_t;
#if WIN32
HANDLE server_thread;
DWORD server_thread_id;
bool lock=false;
#else
pthread_t server_thread;
pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;
#endif
bool kill_server_thread=false;
bool online=false;
unsigned int current_frame=0;
unsigned int last_frame=0xffffffff;
unsigned int delta_frame=0xffffffff;
extern unsigned int packet_loss;
extern int runningPing;
extern ucmd_t updates[];
extern int current_update;
int lastUpdateTime=0;
time_point_t data_points[1024];
igamestate_t states[17];
igamestate_t *cs=&(states[0]);
igamestate_t *ds=&(states[16]);
igamestate_t *spawn=&(states[16]);
int current_state=0;
configstring_t cstrings[1568];
int max_players;
int player_num;
int login_key;
int inventory[256];
int lastInvenTime=0;
bool recording=false;
int demo_handle;
int processServerPacket(unsigned char *b,int len) {
int i=0;
unsigned char type;
char s[256];
unsigned char dbuf[2048];
int dlen=0;
int i_start=0;
int timestamp;
timestamp=_GetTickCount();
while(i<len) {
type=b[i++];
/*
* 0x01 - Muzzleflash
*/
if(type==0x01) {
i+=3;
/*
* 0x02 - Monster Muzzleflash
*/
} else if(type==0x02) {
i+=3;
/*
* 0x03 - Temporary Entity
*/
} else if(type==0x03) {
int entity_type=b[i++];
switch(entity_type) {
case 5:
case 6:
case 7:
case 8:
case 17:
case 18:
case 20:
case 21:
case 22:
case 28:
i+=6;
break;
case 0:
case 1:
case 2:
case 4:
case 9:
case 12:
case 13:
case 14:
case 27:
i+=7;
break;
case 3:
case 11:
case 23:
case 26:
i+=12;
break;
case 10:
i+=9;
break;
case 15:
case 25:
case 29:
i+=9;
break;
case 16:
case 19:
i+=14;
break;
case 24:
i+=20;
break;
default:
qbLog("*** Unrecognized temp_entity type: %02Xh ***",entity_type);
hexdump(b,len);
return 0;
}
/*
* 0x04 - Layout
*/
} else if(type==0x04) {
while(b[i++]);
/*
* 0x05 - Inventory
*/
} else if(type==0x05) {
int j;
for(j=0;j<256;j++) {
inventory[j]=*((short *)(b+i));
i+=2;
}
lastInvenTime=_GetTickCount();
/*
* 0x06 - NOOP
*/
} else if(type==0x06) {
;
/*
* 0x07 - Disconnect
*/
} else if(type==0x07) {
return 1;
/*
* 0x08 - Reconnect
*/
} else if(type==0x08) {
return 1;
/*
* 0x09 - Sound
*/
} else if(type==0x09) {
unsigned int mask;
mask=b[i++];
i++;
if(mask&0x01) i++;
if(mask&0x02) i++;
if(mask&0x10) i++;
if(mask&0x08) i+=2;
if(mask&0x04) i+=6;
/*
* 0x0a - Print
*/
} else if(type==0x0a) {
int j=0;
i++;
while(b[i++]) {
s[j++]=b[i-1]&0x7f;
}
s[j++]=0;
printu("%s",s);
/*
* 0x0b - StuffText
*/
} else if(type==0x0b) {
char *cmd;
int j=0;
memcpy(dbuf+dlen,b+i_start,i-i_start-1);
dlen+=(i-i_start-1);
while(b[i++]) {
s[j++]=b[i-1];
}
s[j++]=0;
// print("StuffText: %s",s);
cmd=strstr(s,"precache");
if(cmd) {
online=true;
qbLog("Precache completed");
dbuf[dlen++]=0x0b;
memcpy(dbuf+dlen,"precache\n",9);
dlen+=9;
dbuf[dlen++]=0x00;
} else {
cmd=strstr(s,"cmd");
if(cmd) {
int x=strlen((char *)(cmd+4));
*((char *)(cmd+x+3))='\0';
qbAsynchConsole((char *)(cmd+4));
// print("%s\n",cmd+4);
} else {
dbuf[dlen++]=0x0b;
memcpy(dbuf+dlen,s,j);
dlen+=j;
}
}
i_start=i;
/*
* 0x0c - Serverinfo
*/
} else if(type==0x0c) {
int version;
version=*((int *)(b+i));
i+=4;
qbLog("Protocol version: %d",version);
login_key=*((int *)(b+i));
i+=4;
qbLog("Login key: %d",login_key);
b[i++]=1;
while(b[i++]);
player_num=*((short *)(b+i))+1;
i+=2;
qbLog("Player Number: %d",player_num);
while(b[i++]);
/*
* 0x0d - ConfigStrings
*/
} else if(type==0x0d) {
int num;
int j=0;
num=*((short *)(b+i));
i+=2;
while(b[i]) {
cstrings[num][j++]=b[i++];
}
cstrings[num][j++]=b[i++];
cstrings[num][63]=0;
// print("Configstring %d: %s\n",num,cstrings[num]);
if(num==30) {
max_players=atoi(cstrings[num]);
}
/*
* 0x0e - Spawn Entity
*/
} else if(type==0x0e) {
unsigned int mask;
int entity;
mask=b[i++];
if(mask&0x00000080) mask|=(b[i++]<<8);
if(mask&0x00008000) mask|=(b[i++]<<16);
if(mask&0x00800000) mask|=(b[i++]<<24);
if(mask&0x00000100) {
entity=*((short *)(b+i));
i+=2;
} else {
entity=b[i++];
}
if(entity>=1024) {
qbLog("Entity > 1024");
return 1;
}
spawn->entities[entity].modelindex=(mask&0x00000800) ? b[i++] : 0;
spawn->entities[entity].modelindex2=(mask&0x00100000) ? b[i++] : 0;
spawn->entities[entity].modelindex3=(mask&0x00200000) ? b[i++] : 0;
spawn->entities[entity].modelindex4=(mask&0x00400000) ? b[i++] : 0;
spawn->entities[entity].framenum=0;
if(mask&0x00000010) spawn->entities[entity].framenum=b[i++];
if(mask&0x00020000) {
spawn->entities[entity].framenum=*((short *)(b+i));
i+=2;
}
if(mask&0x00010000) {
if(mask&0x02000000) {
i+=4;
} else {
i++;
}
} else {
if(mask&0x02000000) {
i+=2;
}
}
if(mask&0x00004000) {
if(mask&0x00080000) {
i+=4;
} else {
i++;
}
} else {
if(mask&0x00080000) i+=2;
}
if(mask&0x00001000) {
if(mask&0x00040000) {
spawn->entities[entity].renderfx=*((int *)(b+i));
i+=4;
} else {
spawn->entities[entity].renderfx=b[i++];
}
} else {
if(mask&0x00040000) {
spawn->entities[entity].renderfx=*((short *)(b+i));
i+=2;
} else {
spawn->entities[entity].renderfx=0;
}
}
if(mask&0x00000001) {
spawn->entities[entity].origin[0]=0.125*((float)*((short *)(b+i)));
i+=2;
} else {
spawn->entities[entity].origin[0]=0;
}
if(mask&0x00000002) {
spawn->entities[entity].origin[1]=0.125*((float)*((short *)(b+i)));
i+=2;
} else {
spawn->entities[entity].origin[1]=0;
}
if(mask&0x00000200) {
spawn->entities[entity].origin[2]=0.125*((float)*((short *)(b+i)));
i+=2;
} else {
spawn->entities[entity].origin[2]=0;
}
spawn->entities[entity].angles[0]=(mask&0x00000400) ? (PI/128.0*(float)b[i++]) : 0;
spawn->entities[entity].angles[1]=(mask&0x00000004) ? (PI/128.0*(float)b[i++]) : 0;
spawn->entities[entity].angles[2]=(mask&0x00000008) ? (PI/128.0*(float)b[i++]) : 0;
if(mask&0x01000000) i+=6;
if(mask&0x04000000) i++;
if(mask&0x00000020) i++;
if(mask&0x08000000) i+=2;
spawn->entities[entity].updated=false;
data_points[entity].timestamp=timestamp;
data_points[entity].origin[0]=spawn->entities[entity].origin[0];
data_points[entity].origin[1]=spawn->entities[entity].origin[1];
data_points[entity].origin[2]=spawn->entities[entity].origin[2];
/*
* 0x0f - CenterPrint
*/
} else if(type==0x0f) {
while(b[i++]);
/*
* 0x10 - Download
*/
} else if(type==0x0f) {
int size;
int percent;
size=*((unsigned short *)(b+i));
i+=2;
percent=b[i++];
if(size>-1) {
i+=size;
}
/*
* 0x11 - Playerinfo
*/
} else if(type==0x11) {
unsigned int mask;
int j;
mask=*((unsigned short *)(b+i));
i+=2;
if(mask&0x0001) i++;
if(mask&0x0002) {
cs->player.origin[0]=0.125*((float)*((short *)(b+i)));
i+=2;
cs->player.origin[1]=0.125*((float)*((short *)(b+i)));
i+=2;
cs->player.origin[2]=0.125*((float)*((short *)(b+i)));
i+=2;
}
if(mask&0x0004) {
cs->player.velocity[0]=0.0125*((float)*((short *)(b+i)));
i+=2;
cs->player.velocity[1]=0.0125*((float)*((short *)(b+i)));
i+=2;
cs->player.velocity[2]=0.0125*((float)*((short *)(b+i)));
i+=2;
}
if(mask&0x0008) i++;
if(mask&0x0010) i++;
if(mask&0x0020) i+=2;
if(mask&0x0040) {
cs->player.angles[0]=PI/32768.0*((float)*((short *)(b+i)));
i+=2;
cs->player.angles[1]=PI/32768.0*((float)*((short *)(b+i)));
i+=2;
cs->player.angles[2]=PI/32768.0*((float)*((short *)(b+i)));
i+=2;
}
if(mask&0x0080) i+=3;
if(mask&0x0100) i+=6;
if(mask&0x0200) i+=3;
if(mask&0x1000) cs->player.gunindex=b[i++];
if(mask&0x2000) i+=7;
if(mask&0x0400) i+=4;
if(mask&0x0800) i++;
if(mask&0x4000) i++;
mask=*((unsigned long *)(b+i));
i+=4;
for(j=0;j<32;j++) {
if(mask & (0x00000001 << j)) {
if(j==13) {
*((short *)(b+i))=0;
}
cs->player.stats[j]=*((short *)(b+i));
i+=2;
}
}
/*
* 0x12 - Entity Update
*/
} else if(type==0x12) {
unsigned int mask;
int entity;
vec3_t oldorigin;
float f;
while(1) {
mask=b[i++];
if(mask&0x00000080) mask|=(b[i++]<<8);
if(mask&0x00008000) mask|=(b[i++]<<16);
if(mask&0x00800000) mask|=(b[i++]<<24);
if(mask&0x00000100) {
entity=*((unsigned short *)(b+i));
i+=2;
} else {
entity=b[i++];
}
if(!entity) break;
if(entity>=1024) {
qbLog("Entity > 1024");
return 1;
}
cs->entities[entity].updated=true;
if(mask&0x00000800) cs->entities[entity].modelindex=b[i++];
if(mask&0x00100000) cs->entities[entity].modelindex2=b[i++];
if(mask&0x00200000) cs->entities[entity].modelindex3=b[i++];
if(mask&0x00400000) cs->entities[entity].modelindex4=b[i++];
if(mask&0x00000010) cs->entities[entity].framenum=b[i++];
if(mask&0x00020000) {
cs->entities[entity].framenum=*((short *)(b+i));
i+=2;
}
if(mask&0x00010000) {
if(mask&0x02000000) {
i+=4;
} else {
i++;
}
} else {
if(mask&0x02000000) {
i+=2;
}
}
if(mask&0x00004000) {
if(mask&0x00080000) {
i+=4;
} else {
i++;
}
} else {
if(mask&0x00080000) i+=2;
}
if(mask&0x00001000) {
if(mask&0x00040000) {
cs->entities[entity].renderfx=*((int *)(b+i));
i+=4;
} else {
cs->entities[entity].renderfx=b[i++];
}
} else {
if(mask&0x00040000) {
cs->entities[entity].renderfx=*((short *)(b+i));
i+=2;
}
}
if(mask&0x00000001) {
cs->entities[entity].origin[0]=0.125*((float)*((short *)(b+i)));
i+=2;
}
if(mask&0x00000002) {
cs->entities[entity].origin[1]=0.125*((float)*((short *)(b+i)));
i+=2;
}
if(mask&0x00000200) {
cs->entities[entity].origin[2]=0.125*((float)*((short *)(b+i)));
i+=2;
}
f=0.01*(float)(timestamp-data_points[entity].timestamp);
if(f>0.0 && f<=10.0) {
cs->entities[entity].velocity[0]=(cs->entities[entity].origin[0]-data_points[entity].origin[0])/f;
cs->entities[entity].velocity[1]=(cs->entities[entity].origin[1]-data_points[entity].origin[1])/f;
cs->entities[entity].velocity[2]=(cs->entities[entity].origin[2]-data_points[entity].origin[2])/f;
} else {
cs->entities[entity].velocity[0]=0;
cs->entities[entity].velocity[1]=0;
cs->entities[entity].velocity[2]=0;
}
data_points[entity].timestamp=timestamp;
data_points[entity].origin[0]=cs->entities[entity].origin[0];
data_points[entity].origin[1]=cs->entities[entity].origin[1];
data_points[entity].origin[2]=cs->entities[entity].origin[2];
if(mask&0x00000004) cs->entities[entity].angles[0]=(PI/128.0*(float)b[i++]);
if(mask&0x00000400) cs->entities[entity].angles[1]=(PI/128.0*(float)b[i++]);
if(mask&0x00000008) cs->entities[entity].angles[2]=(PI/128.0*(float)b[i++]);
if(mask&0x01000000) i+=6;
if(mask&0x04000000) i++;
if(mask&0x00000020) i++;
if(mask&0x08000000) i+=2;
if(mask&0x00000040) {
cs->entities[entity].updated=false;
}
}
/*
* 0x14 - Frame Update
*/
} else if(type==0x14) {
int count;
last_frame=current_frame;
current_frame=*((unsigned long *)(b+i));
i+=4;
delta_frame=*((unsigned long *)(b+i));
i+=4;
i+=1;
count=b[i++];
i+=count;
if((current_frame-last_frame)>12) {
current_state=0;
} else {
current_state=(current_state+current_frame-last_frame)%16;
}
if(delta_frame==0xffffffff) {
ds=&(states[16]);
packet_loss=0;
} else if((current_frame-delta_frame)>12) {
qbLog("*** Too much packet loss ***");
packet_loss=0x80000000;
return 0;
} else {
ds=&(states[(current_state+delta_frame-current_frame+16)%16]);
packet_loss=0;
}
cs=&(states[current_state]);
memcpy(cs,ds,sizeof(igamestate_t));
/*
* 0x?? - Undefined
*/
} else {
qbLog("*** BAD server packet type: %02Xh ***",type);
hexdump(b,len);
return 0;
}
}
if(i>len) {
qbLog("*** Server Packet Misalignment Error ***");
hexdump(b,len);
return 0;
}
memcpy(dbuf+dlen,b+i_start,i-i_start);
dlen+=(i-i_start);
i_start=i;
if(recording) {
write(demo_handle,&dlen,4);
write(demo_handle,dbuf,dlen);
}
return 0;
}
void qbMovementOrder(vec3_t angles, vec3_t velocity, bool attack) {
vec3_t adj_angles;
int frameTime;
if(!online) {
return;
}
LOCK(lock);
frameTime=_GetTickCount()-lastUpdateTime;
while(frameTime<10) {
Sleep(10);
frameTime=_GetTickCount()-lastUpdateTime;
}
lastUpdateTime+=frameTime;
if(frameTime>255) frameTime=255;
adj_angles[0]=angles[0]+cs->player.angles[0];
adj_angles[1]=angles[1]-cs->player.angles[1];
adj_angles[2]=angles[2];
updates[current_update].angles[0]=adj_angles[0];
updates[current_update].angles[1]=adj_angles[1];
updates[current_update].angles[2]=adj_angles[2];
updates[current_update].velocity[0]=velocity[0];
updates[current_update].velocity[1]=velocity[1];
updates[current_update].velocity[2]=velocity[2];
updates[current_update].msec=frameTime;
updates[current_update].light=0;
updates[current_update].buttons=(attack) ? 0x81 : 0;
updates[current_update].impulse=0;
updates[current_update].timestamp=_GetTickCount();
netMovementOrder();
UNLOCK(lock);
}
void qbGetGameState(gamestate_t *s) {
int i;
float f;
entity_t *d,*e;
if(!online) {
return;
}
LOCK(lock);
f=0.01*(float)(runningPing+_GetTickCount()-cs->timestamp);
s->player.sure_origin[0]=cs->player.origin[0];
s->player.sure_origin[1]=cs->player.origin[1];
s->player.sure_origin[2]=cs->player.origin[2];
s->player.origin[0]=cs->player.origin[0]+f*cs->player.velocity[0];
s->player.origin[1]=cs->player.origin[1]+f*cs->player.velocity[1];
s->player.origin[2]=cs->player.origin[2]+f*cs->player.velocity[2];
s->player.velocity[0]=cs->player.velocity[0];
s->player.velocity[1]=cs->player.velocity[1];
s->player.velocity[2]=cs->player.velocity[2];
s->player.angles[0]=cs->player.angles[0];
s->player.angles[1]=cs->player.angles[1];
s->player.angles[2]=cs->player.angles[2];
s->player.health=cs->player.stats[1];
strcpy(s->player.ammo_icon,cstrings[cs->player.stats[2]+544]);
s->player.ammo=cs->player.stats[3];
strcpy(s->player.armor_icon,cstrings[cs->player.stats[4]+544]);
s->player.armor=cs->player.stats[5];
strcpy(s->player.weapon_model,cstrings[cs->player.gunindex+32]);
s->player.timer=cs->player.stats[10];
s->player.frags=cs->player.stats[14];
for(i=0;i<1024;i++) {
e=&(cs->entities[i]);
d=&(s->entities[i]);
d->origin[0]=e->origin[0]+f*e->velocity[0];
d->origin[1]=e->origin[1]+f*e->velocity[1];
d->origin[2]=e->origin[2]+f*e->velocity[2];
d->velocity[0]=e->velocity[0];
d->velocity[1]=e->velocity[1];
d->velocity[2]=e->velocity[2];
d->angles[0]=e->angles[0];
d->angles[1]=e->angles[1];
d->angles[2]=e->angles[2];
d->modelindex=e->modelindex;
d->framenum=e->framenum;
d->updated=e->updated;
}
s->player_entity=player_num;
s->max_players=max_players;
UNLOCK(lock);
}
int qbGetInventory(inventory_t *x) {
int i;
if(!online) {
return 0;
}
LOCK(lock);
for(i=0;i<256;i++) {
strcpy((*x)[i].name,cstrings[1056+i]);
(*x)[i].number=inventory[i];
}
UNLOCK(lock);
return _GetTickCount()-lastInvenTime;
}
bool qbGetModelString(int i, char *s) {
if(!online) {
return false;
}
LOCK(lock);
if(i>=0 && i<256) {
strcpy(s,cstrings[i+32]);
UNLOCK(lock);
return (s[0]!='\0');
}
UNLOCK(lock);
return false;
}
bool qbGetPlayerName(int i, char *s) {
if(!online) {
return false;
}
LOCK(lock);
if(i>0 && i<=256) {
strcpy(s,cstrings[i+1311]);
UNLOCK(lock);
return (s[0]!='\0');
}
UNLOCK(lock);
return false;
}
#if WIN32
DWORD serverThread(void* ptr) {
#else
void* serverThread(void *ptr) {
#endif
char buffer[2048];
int length;
int result;
do {
int ms = qbTickCount();
LOCK(lock);
length=recvPacket(buffer);
if(length>0) {
result=processServerPacket((unsigned char *)buffer,length);
cs->timestamp=_GetTickCount();
} else {
result=0;
}
UNLOCK(lock);
int elapsed = qbTickCount() - ms;
throttle( elapsed, QB_MIN_FRAMETIME );
} while(result==0 && ! kill_server_thread);
if(online) {
qbLog("*** Server Disconnected ***");
}
online=false;
return 0;
}
int qbPingTime(void) {
return runningPing;
}
void qbRecordDemo(const char *filename) {
recording=false;
if(!online) {
#ifdef WIN32
HANDLE hFile=CreateFile(filename,GENERIC_WRITE,0,NULL,CREATE_ALWAYS,FILE_ATTRIBUTE_NORMAL,NULL);
if(hFile==INVALID_HANDLE_VALUE) {
printe("Error: Could not create %s\n",filename);
return;
}
CloseHandle(hFile);
#endif
demo_handle=open(filename,O_BINARY|O_WRONLY|O_TRUNC|O_CREAT);
if(demo_handle==-1) {
qbLog("Error: Could not open %s",filename);
return;
}
qbLog("Recording demo: %s",filename);
recording=true;
} else {
qbLog("Can't record demo while connected");
}
}
void qbSetPrintFunc(PRINTFUNC p) {
setPrintFunc3(p);
}
bool qbStartup(PRINTFUNC p1,PRINTFUNC p2) {
setPrintFuncs(p1,p2);
qbLog("--- Starting Server ---");
qbLog(VERSION_STRING);
memset(cstrings,0,1568*sizeof(configstring_t));
memset(data_points,0,1024*sizeof(time_point_t));
memset(&(states[16]),0,sizeof(igamestate_t));
netPreInit();
return true;
}
bool qbConnect(const char *hostname, unsigned short port) {
if(!netInit(hostname,port)) {
return false;
}
#if WIN32
server_thread=CreateThread(NULL,0,(LPTHREAD_START_ROUTINE)serverThread,NULL,0,&server_thread_id);
if(server_thread == NULL) {
#else
int ret = pthread_create(&server_thread, NULL, serverThread, NULL);
if( ret != 0 ) {
#endif
qbLog("Could not create server thread");
netShutdown();
return false;
}
/*TODO use pthread_attribs to set higher priority*/
#ifdef WIN32
SetThreadPriority(server_thread,THREAD_PRIORITY_TIME_CRITICAL);
#endif
if(!netConnect()) {
qbLog("Could not connect to server");
netShutdown();
return false;
}
qbSynchConsole("new");
while(!online) {
qbLog("Precaching...");
Sleep(1000);
}
return true;
}
void qbBegin(void) {
char s[64];
sprintf(s,"begin %d\n",login_key);
qbSynchConsole(s);
}
bool qbIsConnected(void) {
return online;
}
void qbDisconnect(void) {
if(online) {
online=false;
qbSynchConsole("disconnect");
kill_server_thread = true;
/* TerminateThread(server_thread,0);*/
}
qbLog("*** Client Disconnected ***\n");
}
void qbShutdown(void) {
if(recording) {
int length=-1;
write(demo_handle,&length,4);
close(demo_handle);
recording=false;
}
netShutdown();
}
void qbGetBrushLocation(int n, vec3_t *p) {
char modelname[8];
float f;
int modelindex;
int i;
(*p)[0]=0.0;
(*p)[1]=0.0;
(*p)[2]=0.0;
if(!online) {
return;
}
// while(lock) {
// Sleep(10);
// }
// LOCK(lock);
if(n>256) return;
modelname[0]='*';