300 lines
8 KiB
C
300 lines
8 KiB
C
/*
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* Copyright (c) 2007, Swedish Institute of Computer Science.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* This file is part of the Contiki operating system.
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*
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* Author: Oliver Schmidt <ol.sc@web.de>
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*
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*/
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/**
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* \file
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* Functions needed by the Windows application for uip6-bridge.
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* Thanks to Oliver Schmidt for the original code.
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* \author
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* Salvatore Pitrulli <salvopitru@users.sourceforge.net>
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*/
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#define WIN32_LEAN_AND_MEAN
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#define _WIN32_WINNT 0x0501
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#include <windows.h>
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#include <winsock2.h>
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#include <iphlpapi.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#ifdef __CYGWIN__
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#include <alloca.h>
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#else /* __CYGWIN__ */
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#include <malloc.h>
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#endif /* __CYGWIN__ */
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdarg.h>
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#include <string.h>
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#include <time.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <signal.h>
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#include <termios.h>
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#include <sys/ioctl.h>
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#include <err.h>
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/* Avoid 'conflicting types' errors. */
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#define htonl
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#define htons
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#define PROGRESS(x)
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struct pcap;
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struct pcap_addr {
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struct pcap_addr *next;
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struct sockaddr *addr;
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struct sockaddr *netmask;
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struct sockaddr *broadaddr;
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struct sockaddr *dstaddr;
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};
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struct pcap_if {
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struct pcap_if *next;
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char *name;
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char *description;
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struct pcap_addr *addresses;
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DWORD flags;
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};
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struct pcap_pkthdr {
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struct timeval ts;
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DWORD caplen;
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DWORD len;
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};
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void wpcap_send(void *buf, int len);
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HMODULE wpcap;
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static struct pcap *pcap;
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static int (* pcap_findalldevs)(struct pcap_if **, char *);
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static struct pcap *(* pcap_open_live)(char *, int, int, int, char *);
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static int (* pcap_next_ex)(struct pcap *, struct pcap_pkthdr **, unsigned char **);
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static int (* pcap_sendpacket)(struct pcap *, unsigned char *, int);
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#define BUFSIZE 1514
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#include "net/uip.h"
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#include "net/uip_arp.h"
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static struct uip_eth_addr uip_ethaddr = {{0,0,0,0,0,0}};
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static char interface_name[256] = "";
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static int logging;
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static void
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log_message(char *msg1, char *msg2)
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{
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if(logging) {
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printf("Log: %s %s\n", msg1, msg2);
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}
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}
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/*---------------------------------------------------------------------------*/
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static void
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error_exit(char *msg1)
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{
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printf("error_exit: %s", msg1);
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exit(EXIT_FAILURE);
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}
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/*---------------------------------------------------------------------------*/
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static void
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setethaddr(struct uip_eth_addr *a)
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{
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memcpy(&uip_ethaddr, a, sizeof(struct uip_eth_addr));
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}
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/*---------------------------------------------------------------------------*/
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static void
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init_pcap(struct uip_eth_addr *addr)
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{
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PIP_ADAPTER_ADDRESSES adapters;
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ULONG size = 0;
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if(GetAdaptersAddresses(AF_INET6, GAA_FLAG_SKIP_ANYCAST |
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GAA_FLAG_SKIP_MULTICAST |
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GAA_FLAG_SKIP_DNS_SERVER,
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NULL, NULL, &size) != ERROR_BUFFER_OVERFLOW) {
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error_exit("error on access to adapter list size\n");
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}
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adapters = alloca(size);
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if(GetAdaptersAddresses(AF_INET6, GAA_FLAG_SKIP_ANYCAST |
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GAA_FLAG_SKIP_MULTICAST |
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GAA_FLAG_SKIP_DNS_SERVER,
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NULL, adapters, &size) != ERROR_SUCCESS) {
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error_exit("error on access to adapter list\n");
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}
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while(adapters != NULL) {
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char buffer[256];
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WideCharToMultiByte(CP_ACP, 0, adapters->Description, -1,
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buffer, sizeof(buffer), NULL, NULL);
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log_message("set_ethaddr: found adapter: ", buffer);
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if (adapters->PhysicalAddressLength == 6) {
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wsprintf(buffer, "%02X-%02X-%02X-%02X-%02X-%02X",
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adapters->PhysicalAddress[0], adapters->PhysicalAddress[1],
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adapters->PhysicalAddress[2], adapters->PhysicalAddress[3],
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adapters->PhysicalAddress[4], adapters->PhysicalAddress[5]);
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log_message("Physical address: ", buffer);
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if(memcmp(addr,adapters->PhysicalAddress,sizeof(struct uip_eth_addr))==0){
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char error[256] = "";
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WideCharToMultiByte(CP_ACP, 0, adapters->FriendlyName, -1,
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interface_name, sizeof(interface_name), NULL, NULL);
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printf("Using local network interface: %s\n",interface_name);
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strcpy(buffer,"\\Device\\NPF_");
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strncat(buffer,adapters->AdapterName,200);
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pcap = pcap_open_live(buffer, sizeof(buffer), 0, -1, error);
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if(pcap == NULL) {
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error_exit(error);
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}
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break;
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}
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}
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adapters = adapters->Next;
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}
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if(adapters == NULL) {
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error_exit("no adapter found with Ethernet address specified on cmdline\n");
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}
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}
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/*---------------------------------------------------------------------------*/
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static void
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print_packet(unsigned char *buf, int len)
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{
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int i;
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for(i = 0; i < len; ++i) {
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printf("0x%02x, ", buf[i]);
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if(i % 8 == 7) {
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printf("\n");
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}
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}
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printf("\n\n");
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}
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/*---------------------------------------------------------------------------*/
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char * wpcap_start(struct uip_eth_addr *addr, int log)
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{
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logging = log;
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wpcap = LoadLibrary("wpcap.dll");
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pcap_findalldevs = (int (*)(struct pcap_if **, char *))
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GetProcAddress(wpcap, "pcap_findalldevs");
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pcap_open_live = (struct pcap *(*)(char *, int, int, int, char *))
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GetProcAddress(wpcap, "pcap_open_live");
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pcap_next_ex = (int (*)(struct pcap *, struct pcap_pkthdr **, unsigned char **))
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GetProcAddress(wpcap, "pcap_next_ex");
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pcap_sendpacket = (int (*)(struct pcap *, unsigned char *, int))
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GetProcAddress(wpcap, "pcap_sendpacket");
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if(pcap_findalldevs == NULL || pcap_open_live == NULL ||
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pcap_next_ex == NULL || pcap_sendpacket == NULL) {
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error_exit("error on access to winpcap library\n");
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}
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init_pcap(addr);
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setethaddr(addr);
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return interface_name;
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}
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/*---------------------------------------------------------------------------*/
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uint16_t
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wpcap_poll(char * buf)
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{
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struct pcap_pkthdr *packet_header;
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unsigned char *packet;
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struct uip_eth_hdr * eth_hdr;
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switch(pcap_next_ex(pcap, &packet_header, &packet)) {
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case -1:
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error_exit("error on poll\n");
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case 0:
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return 0;
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}
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if(packet_header->caplen > BUFSIZE) {
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return 0;
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}
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eth_hdr = (struct uip_eth_hdr *)packet;
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if(memcmp(&uip_ethaddr,ð_hdr->src,sizeof(struct uip_eth_addr))!=0){
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// It's not a packet originated from the interface itself.
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return 0;
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}
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CopyMemory(buf, packet, packet_header->caplen);
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return packet_header->caplen;
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}
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/*---------------------------------------------------------------------------*/
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void
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wpcap_send(void *buf, int len)
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{
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if(pcap_sendpacket(pcap, buf, len) == -1) {
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print_packet(buf, len);
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error_exit("error on send\n");
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}
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}
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/*---------------------------------------------------------------------------*/
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void
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wpcap_exit(void)
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{
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FreeLibrary(wpcap);
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}
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/*---------------------------------------------------------------------------*/
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