mirror of
https://github.com/oliverschmidt/contiki.git
synced 2024-12-23 01:29:33 +00:00
346 lines
11 KiB
C
346 lines
11 KiB
C
/*
|
|
* Copyright (c) 2007, 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.
|
|
*
|
|
* This file is part of the Contiki operating system.
|
|
*
|
|
* Author: Oliver Schmidt <ol.sc@web.de>
|
|
*
|
|
* $Id: wpcap.c,v 1.20 2010/10/19 20:30:47 oliverschmidt Exp $
|
|
*/
|
|
|
|
#define WIN32_LEAN_AND_MEAN
|
|
#define _WIN32_WINNT 0x0501
|
|
#include <windows.h>
|
|
#include <winsock2.h>
|
|
#include <iphlpapi.h>
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#ifdef __CYGWIN__
|
|
#include <alloca.h>
|
|
#else /* __CYGWIN__ */
|
|
#include <malloc.h>
|
|
#endif /* __CYGWIN__ */
|
|
|
|
#define DEBUG 0
|
|
#if DEBUG
|
|
#define PRINTF(...) printf(__VA_ARGS__)
|
|
#else
|
|
#define PRINTF(...)
|
|
#endif
|
|
|
|
#include "contiki-net.h"
|
|
#include "sys/log.h"
|
|
|
|
#include "net/wpcap.h"
|
|
|
|
#ifdef __CYGWIN__
|
|
__attribute__((dllimport)) extern char **__argv[];
|
|
#endif /* __CYGWIN__ */
|
|
|
|
struct pcap;
|
|
|
|
struct pcap_if {
|
|
struct pcap_if *next;
|
|
char *name;
|
|
char *description;
|
|
struct pcap_addr {
|
|
struct pcap_addr *next;
|
|
struct sockaddr *addr;
|
|
struct sockaddr *netmask;
|
|
struct sockaddr *broadaddr;
|
|
struct sockaddr *dstaddr;
|
|
} *addresses;
|
|
DWORD flags;
|
|
};
|
|
|
|
struct pcap_pkthdr {
|
|
struct timeval ts;
|
|
DWORD caplen;
|
|
DWORD len;
|
|
};
|
|
|
|
HMODULE wpcap;
|
|
|
|
static struct pcap *pcap;
|
|
|
|
/* uip_ethaddr is defined in uip.c. It is not used in uip6.c.
|
|
* If needed for some purpose it can be defined here
|
|
*/
|
|
#if UIP_CONF_IPV6
|
|
//struct uip_eth_addr uip_ethaddr;
|
|
#endif
|
|
|
|
static int (* pcap_findalldevs)(struct pcap_if **, char *);
|
|
static struct pcap *(* pcap_open_live)(char *, int, int, int, char *);
|
|
static int (* pcap_next_ex)(struct pcap *, struct pcap_pkthdr **, unsigned char **);
|
|
static int (* pcap_sendpacket)(struct pcap *, unsigned char *, int);
|
|
|
|
#define BUF ((struct uip_eth_hdr *)&uip_buf[0])
|
|
#define IPBUF ((struct uip_tcpip_hdr *)&uip_buf[UIP_LLH_LEN])
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
static void
|
|
error_exit(char *message)
|
|
{
|
|
printf("error_exit: %s", message);
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static void
|
|
init_pcap(struct in_addr addr)
|
|
{
|
|
struct pcap_if *interfaces;
|
|
struct pcap_addr *paddr;
|
|
char error[256];
|
|
|
|
if(pcap_findalldevs(&interfaces, error) == -1) {
|
|
error_exit(error);
|
|
}
|
|
|
|
while(interfaces != NULL) {
|
|
log_message("init_pcap: found interface: ", interfaces->description);
|
|
|
|
if(interfaces->addresses != NULL) {
|
|
for(paddr = interfaces->addresses;
|
|
paddr != NULL;
|
|
paddr = paddr->next) {
|
|
if(paddr->addr != NULL && paddr->addr->sa_family == AF_INET) {
|
|
|
|
struct in_addr interface_addr;
|
|
interface_addr = ((struct sockaddr_in *)paddr->addr)->sin_addr;
|
|
log_message("init_pcap: with address: ", inet_ntoa(interface_addr));
|
|
|
|
if(interface_addr.s_addr == addr.s_addr) {
|
|
pcap = pcap_open_live(interfaces->name, UIP_BUFSIZE, 0, -1, error);
|
|
if(pcap == NULL) {
|
|
error_exit(error);
|
|
}
|
|
// pcap_setdirection(PCAP_D_IN); //Not implemented in windows yet?
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
interfaces = interfaces->next;
|
|
}
|
|
|
|
if(interfaces == NULL) {
|
|
error_exit("no interface found with specified ip address\n");
|
|
}
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
static void
|
|
set_ethaddr(struct in_addr addr)
|
|
{
|
|
PIP_ADAPTER_ADDRESSES adapters;
|
|
ULONG size = 0;
|
|
|
|
if(GetAdaptersAddresses(AF_INET, GAA_FLAG_SKIP_ANYCAST |
|
|
GAA_FLAG_SKIP_MULTICAST |
|
|
GAA_FLAG_SKIP_DNS_SERVER,
|
|
NULL, NULL, &size) != ERROR_BUFFER_OVERFLOW) {
|
|
error_exit("error on access to adapter list size\n");
|
|
}
|
|
adapters = alloca(size);
|
|
if(GetAdaptersAddresses(AF_INET, GAA_FLAG_SKIP_ANYCAST |
|
|
GAA_FLAG_SKIP_MULTICAST |
|
|
GAA_FLAG_SKIP_DNS_SERVER,
|
|
NULL, adapters, &size) != ERROR_SUCCESS) {
|
|
error_exit("error on access to adapter list\n");
|
|
}
|
|
|
|
while(adapters != NULL) {
|
|
|
|
char buffer[256];
|
|
WideCharToMultiByte(CP_ACP, 0, adapters->Description, -1,
|
|
buffer, sizeof(buffer), NULL, NULL);
|
|
log_message("set_ethaddr: found adapter: ", buffer);
|
|
|
|
if(adapters->FirstUnicastAddress != NULL &&
|
|
adapters->FirstUnicastAddress->Address.lpSockaddr != NULL &&
|
|
adapters->FirstUnicastAddress->Address.lpSockaddr->sa_family == AF_INET) {
|
|
|
|
struct in_addr adapter_addr;
|
|
adapter_addr = ((struct sockaddr_in *)adapters->FirstUnicastAddress->Address.lpSockaddr)->sin_addr;
|
|
log_message("set_ethaddr: with address: ", inet_ntoa(adapter_addr));
|
|
|
|
if(adapter_addr.s_addr == addr.s_addr) {
|
|
if(adapters->PhysicalAddressLength != 6) {
|
|
error_exit("ip addr specified on cmdline does not belong to an ethernet card\n");
|
|
}
|
|
wsprintf(buffer, "%02X-%02X-%02X-%02X-%02X-%02X",
|
|
adapters->PhysicalAddress[0], adapters->PhysicalAddress[1],
|
|
adapters->PhysicalAddress[2], adapters->PhysicalAddress[3],
|
|
adapters->PhysicalAddress[4], adapters->PhysicalAddress[5]);
|
|
log_message("set_ethaddr: ethernetaddr: ", buffer);
|
|
#if UIP_CONF_IPV6
|
|
// int i;for (i=0;i<6;i++) uip_ethaddr.addr[i] = adapters->PhysicalAddress[i];
|
|
#else
|
|
uip_setethaddr((*(struct uip_eth_addr *)adapters->PhysicalAddress));
|
|
#endif
|
|
break;
|
|
}
|
|
}
|
|
adapters = adapters->Next;
|
|
}
|
|
|
|
if(adapters == NULL) {
|
|
error_exit("no adapter found with ip addr specified on cmdline\n");
|
|
}
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|
|
void
|
|
wpcap_init(void)
|
|
{
|
|
struct in_addr addr;
|
|
|
|
#ifdef __CYGWIN__
|
|
addr.s_addr = inet_addr((*__argv)[1]);
|
|
#else /* __CYGWIN__ */
|
|
addr.s_addr = inet_addr(__argv[1]);
|
|
#endif /* __CYGWIN__ */
|
|
if(addr.s_addr == INADDR_NONE) {
|
|
// error_exit("usage: <program> <ip addr of ethernet card to share>\n");
|
|
addr.s_addr = inet_addr("10.10.10.10");
|
|
log_message("usage: <program> <ip addr of ethernet card to share>\n-->I'll try guessing ", inet_ntoa(addr));
|
|
} else {
|
|
log_message("wpcap_init:cmdline address: ", inet_ntoa(addr));
|
|
}
|
|
|
|
wpcap = LoadLibrary("wpcap.dll");
|
|
pcap_findalldevs = (int (*)(struct pcap_if **, char *))
|
|
GetProcAddress(wpcap, "pcap_findalldevs");
|
|
pcap_open_live = (struct pcap *(*)(char *, int, int, int, char *))
|
|
GetProcAddress(wpcap, "pcap_open_live");
|
|
pcap_next_ex = (int (*)(struct pcap *, struct pcap_pkthdr **, unsigned char **))
|
|
GetProcAddress(wpcap, "pcap_next_ex");
|
|
pcap_sendpacket = (int (*)(struct pcap *, unsigned char *, int))
|
|
GetProcAddress(wpcap, "pcap_sendpacket");
|
|
|
|
if(pcap_findalldevs == NULL || pcap_open_live == NULL ||
|
|
pcap_next_ex == NULL || pcap_sendpacket == NULL) {
|
|
error_exit("error on access to winpcap library\n");
|
|
}
|
|
|
|
init_pcap(addr);
|
|
set_ethaddr(addr);
|
|
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
u16_t
|
|
wpcap_poll(void)
|
|
{
|
|
struct pcap_pkthdr *packet_header;
|
|
unsigned char *packet;
|
|
|
|
switch(pcap_next_ex(pcap, &packet_header, &packet)) {
|
|
case -1:
|
|
error_exit("error on poll\n");
|
|
case 0:
|
|
return 0;
|
|
}
|
|
|
|
#if UIP_CONF_IPV6
|
|
/* Since pcap_setdirection(PCAP_D_IN) is not implemented in winpcap all outgoing packets
|
|
* will be echoed back. The stack will ignore any packets not addressed to it, but initial
|
|
* ipv6 neighbor solicitations are addressed to everyone and the echoed NS sent on startup
|
|
* would be processed as a conflicting NS race which would cause a stack shutdown.
|
|
* So discard all packets with our source address (packet starts destaddr, srcaddr, ...)
|
|
*
|
|
*/
|
|
int i;
|
|
for (i=0;i<UIP_LLADDR_LEN;i++) if (*(packet+UIP_LLADDR_LEN+i)!=uip_lladdr.addr[i]) break;
|
|
if (i==UIP_LLADDR_LEN) {
|
|
PRINTF("Discarding echoed packet\n");
|
|
return 0;
|
|
}
|
|
#endif /* UIP_CONF_IPV6 */
|
|
|
|
if(packet_header->caplen > UIP_BUFSIZE) {
|
|
return 0;
|
|
}
|
|
|
|
CopyMemory(uip_buf, packet, packet_header->caplen);
|
|
return (u16_t)packet_header->caplen;
|
|
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*/
|
|
#if UIP_CONF_IPV6
|
|
u8_t
|
|
wpcap_send(uip_lladdr_t *lladdr)
|
|
{
|
|
if(lladdr == NULL) {
|
|
/* the dest must be multicast*/
|
|
(&BUF->dest)->addr[0] = 0x33;
|
|
(&BUF->dest)->addr[1] = 0x33;
|
|
(&BUF->dest)->addr[2] = IPBUF->destipaddr.u8[12];
|
|
(&BUF->dest)->addr[3] = IPBUF->destipaddr.u8[13];
|
|
(&BUF->dest)->addr[4] = IPBUF->destipaddr.u8[14];
|
|
(&BUF->dest)->addr[5] = IPBUF->destipaddr.u8[15];
|
|
} else {
|
|
memcpy(&BUF->dest, lladdr, UIP_LLADDR_LEN);
|
|
}
|
|
memcpy(&BUF->src, &uip_lladdr, UIP_LLADDR_LEN);
|
|
|
|
PRINTF("Src= %02x %02x %02x %02x %02x %02x",(&BUF->src)->addr[0],(&BUF->src)->addr[1],(&BUF->src)->addr[2],(&BUF->src)->addr[3],(&BUF->src)->addr[4],(&BUF->src)->addr[5]);
|
|
PRINTF(" Dst= %02x %02x %02x %02x %02x %02x",(&BUF->dest)->addr[0],(&BUF->dest)->addr[1],(&BUF->dest)->addr[2],(&BUF->dest)->addr[3],(&BUF->dest)->addr[4],(&BUF->dest)->addr[5]);
|
|
PRINTF(" Type=%04x\n",BUF->type);
|
|
BUF->type = UIP_HTONS(UIP_ETHTYPE_IPV6);
|
|
uip_len += sizeof(struct uip_eth_hdr);
|
|
if(pcap_sendpacket(pcap, uip_buf, uip_len) == -1) {
|
|
error_exit("error on send\n");
|
|
}
|
|
return 0;
|
|
}
|
|
#else /* UIP_CONF_IPV6 */
|
|
void
|
|
wpcap_send(void)
|
|
{
|
|
/* if(rand() % 1000 > 900) {
|
|
printf("Drop\n");
|
|
return;
|
|
} else {
|
|
printf("Send\n");
|
|
}*/
|
|
|
|
if(pcap_sendpacket(pcap, uip_buf, uip_len) == -1) {
|
|
error_exit("error on send\n");
|
|
}
|
|
}
|
|
#endif /* UIP_CONF_IPV6 */
|
|
/*---------------------------------------------------------------------------*/
|
|
void
|
|
wpcap_exit(void)
|
|
{
|
|
FreeLibrary(wpcap);
|
|
}
|
|
/*---------------------------------------------------------------------------*/
|