/*
* 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>
*
*/
/**
* \file
* Functions needed by the Windows application for uip6-bridge.
* Thanks to Oliver Schmidt for the original code.
* \author
* Salvatore Pitrulli <salvopitru@users.sourceforge.net>
*/
#define WIN32_LEAN_AND_MEAN
#define _WIN32_WINNT 0x0501
#include <windows.h>
#include <winsock2.h>
#include <iphlpapi.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#ifdef __CYGWIN__
#include <alloca.h>
#else /* __CYGWIN__ */
#include <malloc.h>
#endif /* __CYGWIN__ */
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <time.h>
#include <sys/types.h>
#include <unistd.h>
#include <errno.h>
#include <fcntl.h>
#include <signal.h>
#include <termios.h>
#include <sys/ioctl.h>
#include <err.h>
/* Avoid 'conflicting types' errors. */
#define htonl
#define htons
#define PROGRESS(x)
struct pcap;
struct pcap_addr {
struct pcap_addr *next;
struct sockaddr *addr;
struct sockaddr *netmask;
struct sockaddr *broadaddr;
struct sockaddr *dstaddr;
};
struct pcap_if {
struct pcap_if *next;
char *name;
char *description;
struct pcap_addr *addresses;
DWORD flags;
};
struct pcap_pkthdr {
struct timeval ts;
DWORD caplen;
DWORD len;
};
void wpcap_send(void *buf, int len);
HMODULE wpcap;
static struct pcap *pcap;
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 BUFSIZE 1514
#include "net/uip.h"
#include "net/uip_arp.h"
struct uip_eth_addr uip_ethaddr = {{0,0,0,0,0,0}};
static char interface_name[256] = "";
static int logging;
static void
log_message(char *msg1, char *msg2)
{
if(logging) {
printf("Log: %s %s\n", msg1, msg2);
}
}
/*---------------------------------------------------------------------------*/
static void
error_exit(char *msg1)
{
printf("error_exit: %s", msg1);
exit(EXIT_FAILURE);
}
/*---------------------------------------------------------------------------*/
static void
setethaddr(struct uip_eth_addr *a)
{
memcpy(&uip_ethaddr, a, sizeof(struct uip_eth_addr));
}
/*---------------------------------------------------------------------------*/
static void
init_pcap(struct uip_eth_addr *addr)
{
PIP_ADAPTER_ADDRESSES adapters;
ULONG size = 0;
if(GetAdaptersAddresses(AF_INET6, 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_INET6, 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->PhysicalAddressLength == 6) {
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("Physical address: ", buffer);
if(memcmp(addr,adapters->PhysicalAddress,sizeof(struct uip_eth_addr))==0){
char error[256] = "";
WideCharToMultiByte(CP_ACP, 0, adapters->FriendlyName, -1,
interface_name, sizeof(interface_name), NULL, NULL);
printf("Using local network interface: %s\n",interface_name);
strcpy(buffer,"\\Device\\NPF_");
strncat(buffer,adapters->AdapterName,200);
pcap = pcap_open_live(buffer, sizeof(buffer), 0, -1, error);
if(pcap == NULL) {
error_exit(error);
}
break;
}
}
adapters = adapters->Next;
}
if(adapters == NULL) {
error_exit("no adapter found with Ethernet address specified on cmdline\n");
}
}
/*---------------------------------------------------------------------------*/
static void
print_packet(unsigned char *buf, int len)
{
int i;
for(i = 0; i < len; ++i) {
printf("0x%02x, ", buf[i]);
if(i % 8 == 7) {
printf("\n");
}
}
printf("\n\n");
}
/*---------------------------------------------------------------------------*/
char * wpcap_start(struct uip_eth_addr *addr, int log)
{
logging = log;
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);
setethaddr(addr);
return interface_name;
}
/*---------------------------------------------------------------------------*/
uint16_t
wpcap_poll(char * buf)
{
struct pcap_pkthdr *packet_header;
unsigned char *packet;
struct uip_eth_hdr * eth_hdr;
switch(pcap_next_ex(pcap, &packet_header, &packet)) {
case -1:
error_exit("error on poll\n");
case 0:
return 0;
}
if(packet_header->caplen > BUFSIZE) {
return 0;
}
eth_hdr = (struct uip_eth_hdr *)packet;
if(memcmp(&uip_ethaddr,ð_hdr->src,sizeof(struct uip_eth_addr))!=0){
// It's not a packet originated from the interface itself.
return 0;
}
CopyMemory(buf, packet, packet_header->caplen);
return packet_header->caplen;
}
/*---------------------------------------------------------------------------*/
void
wpcap_send(void *buf, int len)
{
if(pcap_sendpacket(pcap, buf, len) == -1) {
print_packet(buf, len);
error_exit("error on send\n");
}
}
/*---------------------------------------------------------------------------*/
void
wpcap_exit(void)
{
FreeLibrary(wpcap);
}
/*---------------------------------------------------------------------------*/