1 files changed, 0 insertions, 351 deletions

diff --git a/src/engine/e_network.c b/src/engine/e_network.c
deleted file mode 100644
index 3c32de1d..00000000
--- a/src/engine/e_network.c
+++ /dev/null
@@ -1,351 +0,0 @@
-/* copyright (c) 2007 magnus auvinen, see licence.txt for more info */
-#include <base/system.h>
-
-#include <string.h> /* strlen */
-
-#include "e_config.h"
-#include "e_engine.h"
-#include "e_network.h"
-#include "e_network_internal.h"
-#include "e_huffman.h"
-
-void recvinfo_clear(NETRECVINFO *info)
-{
-	info->valid = 0;
-}
-
-void recvinfo_start(NETRECVINFO *info, NETADDR *addr, NETCONNECTION *conn, int cid)
-{
-	info->addr = *addr;
-	info->conn = conn;
-	info->client_id = cid;
-	info->current_chunk = 0;
-	info->valid = 1;
-}
-
-
-int seq_in_backroom(int seq, int ack)
-{
-	int bottom = (ack-NET_MAX_SEQUENCE/2);
-	if(bottom < 0)
-	{
-		if(seq <= ack)
-			return 1;
-		if(seq >= (bottom + NET_MAX_SEQUENCE))
-			return 1;
-	}
-	else
-	{
-		if(seq <= ack && seq >= bottom)
-			return 1;
-	}
-	
-	return 0;
-}
-
-/* TODO: rename this function */
-int recvinfo_fetch_chunk(NETRECVINFO *info, NETCHUNK *chunk)
-{
-	NETCHUNKHEADER header;
-	unsigned char *end = info->data.chunk_data + info->data.data_size;
-	int i;
-	
-	while(1)
-	{
-		unsigned char *data = info->data.chunk_data;
-		
-		/* check for old data to unpack */
-		if(!info->valid || info->current_chunk >= info->data.num_chunks)
-		{
-			recvinfo_clear(info);
-			return 0;
-		}
-		
-		/* TODO: add checking here so we don't read too far */
-		for(i = 0; i < info->current_chunk; i++)
-		{
-			data = unpack_chunk_header(data, &header);
-			data += header.size;
-		}
-		
-		/* unpack the header */	
-		data = unpack_chunk_header(data, &header);
-		info->current_chunk++;
-		
-		if(data+header.size > end)
-		{
-			recvinfo_clear(info);
-			return 0;
-		}
-		
-		/* handle sequence stuff */
-		if(info->conn && (header.flags&NET_CHUNKFLAG_VITAL))
-		{
-			if(header.sequence == (info->conn->ack+1)%NET_MAX_SEQUENCE)
-			{
-				/* in sequence */
-				info->conn->ack = (info->conn->ack+1)%NET_MAX_SEQUENCE;
-			}
-			else
-			{
-				/* old packet that we already got */
-				if(seq_in_backroom(header.sequence, info->conn->ack))
-					continue;
-
-				/* out of sequence, request resend */
-				if(config.debug)
-					dbg_msg("conn", "asking for resend %d %d", header.sequence, (info->conn->ack+1)%NET_MAX_SEQUENCE);
-				conn_want_resend(info->conn);
-				continue; /* take the next chunk in the packet */
-			}
-		}
-		
-		/* fill in the info */
-		chunk->client_id = info->client_id;
-		chunk->address = info->addr;
-		chunk->flags = 0;
-		chunk->data_size = header.size;
-		chunk->data = data;
-		return 1;
-	}
-}
-
-
-static IOHANDLE datalog_sent = 0;
-static IOHANDLE datalog_recv = 0;
-static HUFFMAN_STATE huffmanstate;
-
-#define COMPRESSION 1
-
-/* packs the data tight and sends it */
-void send_packet_connless(NETSOCKET socket, NETADDR *addr, const void *data, int data_size)
-{
-	unsigned char buffer[NET_MAX_PACKETSIZE];
-	buffer[0] = 0xff;
-	buffer[1] = 0xff;
-	buffer[2] = 0xff;
-	buffer[3] = 0xff;
-	buffer[4] = 0xff;
-	buffer[5] = 0xff;
-	mem_copy(&buffer[6], data, data_size);
-	net_udp_send(socket, addr, buffer, 6+data_size);
-}
-
-int netcommon_compress(const void *data, int data_size, void *output, int output_size)
-{
-	return huffman_compress(&huffmanstate, data, data_size, output, output_size);
-}
-
-int netcommon_decompress(const void *data, int data_size, void *output, int output_size)
-{
-	return huffman_decompress(&huffmanstate, data, data_size, output, output_size);
-}
-
-void send_packet(NETSOCKET socket, NETADDR *addr, NETPACKETCONSTRUCT *packet)
-{
-	unsigned char buffer[NET_MAX_PACKETSIZE];
-	int compressed_size = -1;
-	int final_size = -1;
-
-	/* log the data */
-	if(datalog_sent)
-	{
-		int type = 1;
-		io_write(datalog_sent, &type, sizeof(type));
-		io_write(datalog_sent, &packet->data_size, sizeof(packet->data_size));
-		io_write(datalog_sent, &packet->chunk_data, packet->data_size);
-		io_flush(datalog_sent);
-	}
-	
-	/* compress if its enabled */
-	if(COMPRESSION)
-		compressed_size = huffman_compress(&huffmanstate, packet->chunk_data, packet->data_size, &buffer[3], NET_MAX_PACKETSIZE-4);
-
-	/* check if the compression was enabled, successful and good enough	*/
-	if(compressed_size > 0 && compressed_size < packet->data_size)
-	{
-		final_size = compressed_size;
-		packet->flags |= NET_PACKETFLAG_COMPRESSION;
-	}
-	else
-	{
-		/* use uncompressed data */
-		final_size = packet->data_size;
-		mem_copy(&buffer[3], packet->chunk_data, packet->data_size);
-		packet->flags &= ~NET_PACKETFLAG_COMPRESSION;
-	}
-
-	/* set header and send the packet if all things are good */
-	if(final_size >= 0)
-	{
-		final_size += NET_PACKETHEADERSIZE;
-		buffer[0] = ((packet->flags<<4)&0xf0)|((packet->ack>>8)&0xf);
-		buffer[1] = packet->ack&0xff;
-		buffer[2] = packet->num_chunks;
-		net_udp_send(socket, addr, buffer, final_size);
-
-		/* log raw socket data */
-		if(datalog_sent)
-		{
-			int type = 0;
-			io_write(datalog_sent, &type, sizeof(type));
-			io_write(datalog_sent, &final_size, sizeof(final_size));
-			io_write(datalog_sent, buffer, final_size);
-			io_flush(datalog_sent);
-		}
-	}
-}
-
-/* TODO: rename this function */
-int unpack_packet(unsigned char *buffer, int size, NETPACKETCONSTRUCT *packet)
-{
-	/* check the size */
-	if(size < NET_PACKETHEADERSIZE || size > NET_MAX_PACKETSIZE)
-	{
-		dbg_msg("", "packet too small, %d", size);
-		return -1;
-	}
-
-	/* log the data */
-	if(datalog_recv)
-	{
-		int type = 0;
-		io_write(datalog_recv, &type, sizeof(type));
-		io_write(datalog_recv, &size, sizeof(size));
-		io_write(datalog_recv, buffer, size);
-		io_flush(datalog_recv);
-	}
-	
-	/* read the packet */
-	packet->flags = buffer[0]>>4;
-	packet->ack = ((buffer[0]&0xf)<<8) | buffer[1];
-	packet->num_chunks = buffer[2];
-	packet->data_size = size - NET_PACKETHEADERSIZE;
-
-	if(packet->flags&NET_PACKETFLAG_CONNLESS)
-	{
-		if(size < 6)
-		{
-			dbg_msg("", "connection less packet too small, %d", size);
-			return -1;
-		}
-			
-		packet->flags = NET_PACKETFLAG_CONNLESS;
-		packet->ack = 0;
-		packet->num_chunks = 0;
-		packet->data_size = size - 6;
-		mem_copy(packet->chunk_data, &buffer[6], packet->data_size);
-	}
-	else
-	{
-		if(packet->flags&NET_PACKETFLAG_COMPRESSION)
-			packet->data_size = huffman_decompress(&huffmanstate, &buffer[3], packet->data_size, packet->chunk_data, sizeof(packet->chunk_data));
-		else
-			mem_copy(packet->chunk_data, &buffer[3], packet->data_size);
-	}
-
-	/* check for errors */	
-	if(packet->data_size < 0)
-	{
-		if(config.debug)
-			dbg_msg("network", "error during packet decoding");
-		return -1;
-	}
-
-	/* log the data */
-	if(datalog_recv)
-	{
-		int type = 1;
-		io_write(datalog_recv, &type, sizeof(type));
-		io_write(datalog_recv, &packet->data_size, sizeof(packet->data_size));
-		io_write(datalog_recv, packet->chunk_data, packet->data_size);
-		io_flush(datalog_recv);
-	}
-		
-	/* return success */
-	return 0;
-}
-
-
-/* TODO: change the arguments of this function */
-unsigned char *pack_chunk_header(unsigned char *data, int flags, int size, int sequence)
-{
-	data[0] = ((flags&3)<<6)|((size>>4)&0x3f);
-	data[1] = (size&0xf);
-	if(flags&NET_CHUNKFLAG_VITAL)
-	{
-		data[1] |= (sequence>>2)&0xf0;
-		data[2] = sequence&0xff;
-		return data + 3;
-	}
-	return data + 2;
-}
-
-unsigned char *unpack_chunk_header(unsigned char *data, NETCHUNKHEADER *header)
-{
-	header->flags = (data[0]>>6)&3;
-	header->size = ((data[0]&0x3f)<<4) | (data[1]&0xf);
-	header->sequence = -1;
-	if(header->flags&NET_CHUNKFLAG_VITAL)
-	{
-		header->sequence = ((data[1]&0xf0)<<2) | data[2];
-		return data + 3;
-	}
-	return data + 2;
-}
-
-
-void send_controlmsg(NETSOCKET socket, NETADDR *addr, int ack, int controlmsg, const void *extra, int extra_size)
-{
-	NETPACKETCONSTRUCT construct;
-	construct.flags = NET_PACKETFLAG_CONTROL;
-	construct.ack = ack;
-	construct.num_chunks = 0;
-	construct.data_size = 1+extra_size;
-	construct.chunk_data[0] = controlmsg;
-	mem_copy(&construct.chunk_data[1], extra, extra_size);
-	
-	/* send the control message */
-	send_packet(socket, addr, &construct);
-}
-
-void netcommon_openlog(const char *sentlog, const char *recvlog)
-{
-	if(sentlog)
-	{
-		datalog_sent = engine_openfile(sentlog, IOFLAG_WRITE);
-		if(datalog_sent)
-			dbg_msg("network", "logging sent packages to '%s'", sentlog);
-		else
-			dbg_msg("network", "failed to open for logging '%s'", sentlog);
-	}
-	
-	if(recvlog)
-	{
-		datalog_recv = engine_openfile(recvlog, IOFLAG_WRITE);
-		if(recvlog)
-			dbg_msg("network", "logging recv packages to '%s'", recvlog);
-		else
-			dbg_msg("network", "failed to open for logging '%s'", recvlog);
-	}
-}
-
-static const unsigned freq_table[256+1] = {
-	1<<30,4545,2657,431,1950,919,444,482,2244,617,838,542,715,1814,304,240,754,212,647,186,
-	283,131,146,166,543,164,167,136,179,859,363,113,157,154,204,108,137,180,202,176,
-	872,404,168,134,151,111,113,109,120,126,129,100,41,20,16,22,18,18,17,19,
-	16,37,13,21,362,166,99,78,95,88,81,70,83,284,91,187,77,68,52,68,
-	59,66,61,638,71,157,50,46,69,43,11,24,13,19,10,12,12,20,14,9,
-	20,20,10,10,15,15,12,12,7,19,15,14,13,18,35,19,17,14,8,5,
-	15,17,9,15,14,18,8,10,2173,134,157,68,188,60,170,60,194,62,175,71,
-	148,67,167,78,211,67,156,69,1674,90,174,53,147,89,181,51,174,63,163,80,
-	167,94,128,122,223,153,218,77,200,110,190,73,174,69,145,66,277,143,141,60,
-	136,53,180,57,142,57,158,61,166,112,152,92,26,22,21,28,20,26,30,21,
-	32,27,20,17,23,21,30,22,22,21,27,25,17,27,23,18,39,26,15,21,
-	12,18,18,27,20,18,15,19,11,17,33,12,18,15,19,18,16,26,17,18,
-	9,10,25,22,22,17,20,16,6,16,15,20,14,18,24,335,1517};
-
-void netcommon_init()
-{
-	huffman_init(&huffmanstate, freq_table);
-}