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devilutionX-lwip/proj/msvc6/pktif.c

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/*
* Copyright (c) 2001,2002 Florian Schulze.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the authors nor the names of the contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* pktif.c - This file is part of lwIPtest
*
****************************************************************************
*
* This file is derived from an example in lwIP with the following license:
*
* Copyright (c) 2001, Swedish Institute of Computer Science.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#define WIN32_LEAN_AND_MEAN
#include <stdlib.h>
#include <stdio.h>
#include <windows.h>
#include <packet32.h>
#include <ntddndis.h>
#include "lwip/debug.h"
#include "lwip/opt.h"
#include "lwip/def.h"
#include "lwip/mem.h"
#include "lwip/pbuf.h"
#include "lwip/stats.h"
#include "lwip/sys.h"
#include "lwip/ip.h"
#include "netif/etharp.h"
#include "netif/tcpdump.h"
#undef NETIF_DEBUG
/* Define those to better describe your network interface. */
#define IFNAME0 'p'
#define IFNAME1 'k'
struct ethernetif {
struct eth_addr *ethaddr;
/* Add whatever per-interface state that is needed here. */
};
static const struct eth_addr ethbroadcast = {{0xff,0xff,0xff,0xff,0xff,0xff}};
/* Forward declarations. */
static void ethernetif_input(struct netif *netif);
static err_t ethernetif_output(struct netif *netif, struct pbuf *p,
struct ip_addr *ipaddr);
static struct netif *pktif_netif;
LPADAPTER lpAdapter;
LPPACKET lpPacket;
char buffer[256000]; // buffer to hold the data coming from the driver
unsigned char *cur_packet;
int cur_length;
struct eth_addr ethaddr;
/*-----------------------------------------------------------------------------------*/
int init_adapter(void)
{
#define Max_Num_Adapter 10
char AdapterList[Max_Num_Adapter][1024];
int i;
DWORD dwVersion;
DWORD dwWindowsMajorVersion;
//unicode strings (winnt)
WCHAR AdapterName[8192]; // string that contains a list of the network adapters
WCHAR *temp,*temp1;
//ascii strings (win95)
char AdapterNamea[8192]; // string that contains a list of the network adapters
char *tempa,*temp1a;
int AdapterNum=0;
ULONG AdapterLength;
PPACKET_OID_DATA ppacket_oid_data;
BOOLEAN result;
// obtain the name of the adapters installed on this machine
AdapterLength=4096;
memset(AdapterList,0,sizeof(AdapterList));
i=0;
// the data returned by PacketGetAdapterNames is different in Win95 and in WinNT.
// We have to check the os on which we are running
dwVersion=GetVersion();
dwWindowsMajorVersion = (DWORD)(LOBYTE(LOWORD(dwVersion)));
if (!(dwVersion >= 0x80000000 && dwWindowsMajorVersion >= 4))
{ // Windows NT
if(PacketGetAdapterNames(AdapterName,&AdapterLength)==FALSE){
printf("Unable to retrieve the list of the adapters!\n");
return -1;
}
temp=AdapterName;
temp1=AdapterName;
while ((*temp!='\0')||(*(temp-1)!='\0'))
{
if (*temp=='\0')
{
memcpy(AdapterList[i],temp1,(temp-temp1)*2);
temp1=temp+1;
i++;
}
temp++;
}
AdapterNum=i;
}
else //windows 95
{
if(PacketGetAdapterNames(AdapterNamea,&AdapterLength)==FALSE){
printf("Unable to retrieve the list of the adapters!\n");
return -1;
}
tempa=AdapterNamea;
temp1a=AdapterNamea;
while ((*tempa!='\0')||(*(tempa-1)!='\0'))
{
if (*tempa=='\0')
{
memcpy(AdapterList[i],temp1a,tempa-temp1a);
temp1a=tempa+1;
i++;
}
tempa++;
}
AdapterNum=i;
}
if (AdapterNum<=0)
return -1;
ppacket_oid_data=malloc(sizeof(PACKET_OID_DATA)+6);
lpAdapter=PacketOpenAdapter(AdapterList[0]);
if (!lpAdapter || (lpAdapter->hFile == INVALID_HANDLE_VALUE))
return -1;
ppacket_oid_data->Oid=OID_802_3_PERMANENT_ADDRESS;
ppacket_oid_data->Length=6;
if (!PacketRequest(lpAdapter,FALSE,ppacket_oid_data))
return -1;
memcpy(ppacket_oid_data->Data,&ethaddr,6);
free(ppacket_oid_data);
PacketSetBuff(lpAdapter,512000);
PacketSetReadTimeout(lpAdapter,1);
PacketSetHwFilter(lpAdapter,NDIS_PACKET_TYPE_ALL_LOCAL);
if((lpPacket = PacketAllocatePacket())==NULL){
return (-1);
}
PacketInitPacket(lpPacket,(char*)buffer,256000);
return 0;
}
void shutdown_adapter(void)
{
struct ethernetif *ethernetif;
ethernetif = pktif_netif->state;
PacketFreePacket(lpPacket);
PacketCloseAdapter(lpAdapter);
}
static void open_adapter(struct ethernetif *ethernetif)
{
memcpy(&ethaddr,ethernetif->ethaddr,6);
}
/*-----------------------------------------------------------------------------------*/
static void
low_level_init(struct netif *netif)
{
struct ethernetif *ethernetif;
ethernetif = netif->state;
open_adapter(ethernetif);
#ifdef NETIF_DEBUG
DEBUGF(NETIF_DEBUG, ("pktif: eth_addr %02X%02X%02X%02X%02X%02X\n",ethernetif->ethaddr->addr[0],ethernetif->ethaddr->addr[1],ethernetif->ethaddr->addr[2],ethernetif->ethaddr->addr[3],ethernetif->ethaddr->addr[4],ethernetif->ethaddr->addr[5]));
#endif /* NETIF_DEBUG */
/* Do whatever else is needed to initialize interface. */
pktif_netif=netif;
}
/*-----------------------------------------------------------------------------------*/
/*
* low_level_output():
*
* Should do the actual transmission of the packet. The packet is
* contained in the pbuf that is passed to the function. This pbuf
* might be chained.
*
*/
/*-----------------------------------------------------------------------------------*/
static err_t
low_level_output(struct netif *ethernetif, struct pbuf *p)
{
struct pbuf *q;
unsigned char buffer[1600];
unsigned char *ptr;
LPPACKET lpPacket;
/* initiate transfer(); */
if (p->tot_len>=1600)
return ERR_BUF;
if((lpPacket = PacketAllocatePacket())==NULL)
return ERR_BUF;
PacketInitPacket(lpPacket,buffer,p->tot_len);
ptr=buffer;
for(q = p; q != NULL; q = q->next) {
/* Send the data from the pbuf to the interface, one pbuf at a
time. The size of the data in each pbuf is kept in the ->len
variable. */
/* send data from(q->payload, q->len); */
#ifdef NETIF_DEBUG
DEBUGF(NETIF_DEBUG, ("netif: send ptr %p q->payload %p q->len %i q->next %p\n", ptr, q->payload, (int)q->len, q->next));
#endif
bcopy(q->payload,ptr,q->len);
ptr+=q->len;
}
/* signal that packet should be sent(); */
if (!PacketSendPacket(lpAdapter,lpPacket,TRUE))
return ERR_BUF;
PacketFreePacket(lpPacket);
#ifdef LINK_STATS
stats.link.xmit++;
#endif /* LINK_STATS */
return ERR_OK;
}
/*-----------------------------------------------------------------------------------*/
/*
* low_level_input():
*
* Should allocate a pbuf and transfer the bytes of the incoming
* packet from the interface into the pbuf.
*
*/
/*-----------------------------------------------------------------------------------*/
static struct pbuf *
low_level_input(struct netif *ethernetif)
{
struct pbuf *p, *q;
int start, length;
/* Obtain the size of the packet and put it into the "len"
variable. */
length = cur_length;
if (length<=0)
return NULL;
/* We allocate a pbuf chain of pbufs from the pool. */
p = pbuf_alloc(PBUF_LINK, (u16_t)length, PBUF_POOL);
#ifdef NETIF_DEBUG
DEBUGF(NETIF_DEBUG, ("netif: recv length %i p->tot_len %i\n", length, (int)p->tot_len));
#endif
if(p != NULL) {
/* We iterate over the pbuf chain until we have read the entire
packet into the pbuf. */
start=0;
for(q = p; q != NULL; q = q->next) {
/* Read enough bytes to fill this pbuf in the chain. The
avaliable data in the pbuf is given by the q->len
variable. */
/* read data into(q->payload, q->len); */
#ifdef NETIF_DEBUG
DEBUGF(NETIF_DEBUG, ("netif: recv start %i length %i q->payload %p q->len %i q->next %p\n", start, length, q->payload, (int)q->len, q->next));
#endif
bcopy(&cur_packet[start],q->payload,q->len);
start+=q->len;
length-=q->len;
if (length<=0)
break;
}
/* acknowledge that packet has been read(); */
cur_length=0;
#ifdef LINK_STATS
stats.link.recv++;
#endif /* LINK_STATS */
} else {
/* drop packet(); */
cur_length=0;
#ifdef LINK_STATS
stats.link.memerr++;
stats.link.drop++;
#endif /* LINK_STATS */
}
return p;
}
/*-----------------------------------------------------------------------------------*/
/*
* ethernetif_output():
*
* This function is called by the TCP/IP stack when an IP packet
* should be sent. It calls the function called low_level_output() to
* do the actuall transmission of the packet.
*
*/
/*-----------------------------------------------------------------------------------*/
static err_t
ethernetif_output(struct netif *netif, struct pbuf *p,
struct ip_addr *ipaddr)
{
p = etharp_output(netif, ipaddr, p);
if(p != NULL) {
return low_level_output(netif, p);
}
return ERR_OK;
}
/*-----------------------------------------------------------------------------------*/
/*
* ethernetif_input():
*
* This function should be called when a packet is ready to be read
* from the interface. It uses the function low_level_input() that
* should handle the actual reception of bytes from the network
* interface.
*
*/
/*-----------------------------------------------------------------------------------*/
static void
ethernetif_input(struct netif *netif)
{
struct ethernetif *ethernetif;
struct eth_hdr *ethhdr;
struct pbuf *p;
ethernetif = netif->state;
p = low_level_input(netif);
if(p != NULL) {
#ifdef LINK_STATS
stats.link.recv++;
#endif /* LINK_STATS */
ethhdr = p->payload;
switch(htons(ethhdr->type)) {
case ETHTYPE_IP:
etharp_ip_input(netif, p);
pbuf_header(p, -14);
//if(ip_lookup(p->payload, netif)) {
netif->input(p, netif);
//}
break;
case ETHTYPE_ARP:
p = etharp_arp_input(netif, ethernetif->ethaddr, p);
if(p != NULL) {
low_level_output(netif, p);
pbuf_free(p);
}
break;
default:
pbuf_free(p);
break;
}
}
}
/*-----------------------------------------------------------------------------------*/
static void
arp_timer(void *arg)
{
etharp_tmr();
sys_timeout(ARP_TMR_INTERVAL, (sys_timeout_handler)arp_timer, NULL);
}
/*-----------------------------------------------------------------------------------*/
/*
* ethernetif_init():
*
* Should be called at the beginning of the program to set up the
* network interface. It calls the function low_level_init() to do the
* actual setup of the hardware.
*
*/
/*-----------------------------------------------------------------------------------*/
void
ethernetif_init(struct netif *netif)
{
struct ethernetif *ethernetif;
ethernetif = mem_malloc(sizeof(struct ethernetif));
netif->state = ethernetif;
netif->name[0] = IFNAME0;
netif->name[1] = IFNAME1;
netif->output = ethernetif_output;
ethernetif->ethaddr = (struct eth_addr *)&(netif->hwaddr[0]);
low_level_init(netif);
etharp_init();
sys_timeout(ARP_TMR_INTERVAL, (sys_timeout_handler)arp_timer, NULL);
}
/*-----------------------------------------------------------------------------------*/
/*
* pktif_update():
*
* Needs to be called periodically to get new packets. This could
* be done inside a thread.
*/
/*-----------------------------------------------------------------------------------*/
static void ProcessPackets(LPPACKET lpPacket)
{
ULONG ulLines, ulBytesReceived;
char *base;
char *buf;
u_int off=0;
u_int tlen,tlen1;
struct bpf_hdr *hdr;
struct ethernetif *ethernetif;
ethernetif = pktif_netif->state;
ulBytesReceived = lpPacket->ulBytesReceived;
buf = lpPacket->Buffer;
off=0;
while(off<ulBytesReceived)
{
//if(kbhit())return;
hdr=(struct bpf_hdr *)(buf+off);
tlen1=hdr->bh_datalen;
cur_length=tlen1;
tlen=hdr->bh_caplen;
off+=hdr->bh_hdrlen;
ulLines = (tlen + 15) / 16;
if (ulLines > 5) ulLines=5;
base =(char*)(buf+off);
cur_packet=base;
off=Packet_WORDALIGN(off+tlen);
ethernetif_input(pktif_netif);
}
}
void update_adapter(void)
{
struct ethernetif *ethernetif;
ethernetif = pktif_netif->state;
if(PacketReceivePacket(lpAdapter,lpPacket,TRUE)==TRUE)
ProcessPackets(lpPacket);
cur_length=0;
cur_packet=NULL;
}