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// misc useful functions used by the server
#include "cube.h"
// all network traffic is in 32bit ints, which are then compressed using the
// following simple scheme (assumes that most values are small).
void
putint(uchar **p, int n)
{
if (n < 128 && n > -127) {
*(*p)++ = n;
} else if (n < 0x8000 && n >= -0x8000) {
*(*p)++ = 0x80;
*(*p)++ = n;
*(*p)++ = n >> 8;
} else {
*(*p)++ = 0x81;
*(*p)++ = n;
*(*p)++ = n >> 8;
*(*p)++ = n >> 16;
*(*p)++ = n >> 24;
}
}
int
getint(uchar **p)
{
int c = *((char *)*p);
(*p)++;
if (c == -128) {
int n = *(*p)++;
n |= *((char *)*p) << 8;
(*p)++;
return n;
} else if (c == -127) {
int n = *(*p)++;
n |= *(*p)++ << 8;
n |= *(*p)++ << 16;
return n | (*(*p)++ << 24);
} else
return c;
}
void
sendstring(OFString *t_, uchar **p)
{
const char *t = t_.UTF8String;
for (size_t i = 0; i < _MAXDEFSTR && *t != '\0'; i++)
putint(p, *t++);
putint(p, 0);
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// misc useful functions used by the server
#include "cube.h"
// all network traffic is in 32bit ints, which are then compressed using the
// following simple scheme (assumes that most values are small).
void
putint(unsigned char **p, int n)
{
if (n < 128 && n > -127) {
*(*p)++ = n;
} else if (n < 0x8000 && n >= -0x8000) {
*(*p)++ = 0x80;
*(*p)++ = n;
*(*p)++ = n >> 8;
} else {
*(*p)++ = 0x81;
*(*p)++ = n;
*(*p)++ = n >> 8;
*(*p)++ = n >> 16;
*(*p)++ = n >> 24;
}
}
int
getint(unsigned char **p)
{
int c = *((char *)*p);
(*p)++;
if (c == -128) {
int n = *(*p)++;
n |= *((char *)*p) << 8;
(*p)++;
return n;
} else if (c == -127) {
int n = *(*p)++;
n |= *(*p)++ << 8;
n |= *(*p)++ << 16;
return n | (*(*p)++ << 24);
} else
return c;
}
void
sendstring(OFString *t_, unsigned char **p)
{
const char *t = t_.UTF8String;
for (size_t i = 0; i < _MAXDEFSTR && *t != '\0'; i++)
putint(p, *t++);
putint(p, 0);
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return -1;
}
// sending of maps between clients
static OFString *copyname;
int copysize;
uchar *copydata = NULL;
void
sendmaps(int n, OFString *mapname, int mapsize, uchar *mapdata)
{
if (mapsize <= 0 || mapsize > 256 * 256)
return;
copyname = mapname;
copysize = mapsize;
if (copydata)
OFFreeMemory(copydata);
copydata = (uchar *)OFAllocMemory(1, mapsize);
memcpy(copydata, mapdata, mapsize);
}
ENetPacket *
recvmap(int n)
{
if (!copydata)
return NULL;
ENetPacket *packet = enet_packet_create(
NULL, MAXTRANS + copysize, ENET_PACKET_FLAG_RELIABLE);
uchar *start = packet->data;
uchar *p = start + 2;
putint(&p, SV_RECVMAP);
sendstring(copyname, &p);
putint(&p, copysize);
memcpy(p, copydata, copysize);
p += copysize;
*(ushort *)start = ENET_HOST_TO_NET_16(p - start);
enet_packet_resize(packet, p - start);
return packet;
}
#ifdef STANDALONE
void
localservertoclient(uchar *buf, int len)
{
}
void
fatal(OFConstantString *s, ...)
{
cleanupserver();
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return -1;
}
// sending of maps between clients
static OFString *copyname;
int copysize;
unsigned char *copydata = NULL;
void
sendmaps(int n, OFString *mapname, int mapsize, unsigned char *mapdata)
{
if (mapsize <= 0 || mapsize > 256 * 256)
return;
copyname = mapname;
copysize = mapsize;
if (copydata)
OFFreeMemory(copydata);
copydata = (unsigned char *)OFAllocMemory(1, mapsize);
memcpy(copydata, mapdata, mapsize);
}
ENetPacket *
recvmap(int n)
{
if (!copydata)
return NULL;
ENetPacket *packet = enet_packet_create(
NULL, MAXTRANS + copysize, ENET_PACKET_FLAG_RELIABLE);
unsigned char *start = packet->data;
unsigned char *p = start + 2;
putint(&p, SV_RECVMAP);
sendstring(copyname, &p);
putint(&p, copysize);
memcpy(p, copydata, copysize);
p += copysize;
*(unsigned short *)start = ENET_HOST_TO_NET_16(p - start);
enet_packet_resize(packet, p - start);
return packet;
}
#ifdef STANDALONE
void
localservertoclient(unsigned char *buf, int len)
{
}
void
fatal(OFConstantString *s, ...)
{
cleanupserver();
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