115 lines
3.3 KiB
C++
115 lines
3.3 KiB
C++
/*
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* Copyright (C) 2017 by Lieven De Samblanx ON7LDS
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "Network.h"
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#include "Log.h"
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#include <cstdio>
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#include <cassert>
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#include <cstring>
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#include <ctime>
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#include <clocale>
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#include <sys/types.h>
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#include <ifaddrs.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <netdb.h>
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void CNetworkInfo::getNetworkInterface(unsigned char* info)
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{
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#define IFLISTSIZ 25
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LogInfo("Interfaces Info");
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struct ifaddrs *ifaddr, *ifa;
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int family, s, n, ifnr;
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char host[NI_MAXHOST];
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char interfacelist[IFLISTSIZ][50+INET6_ADDRSTRLEN];
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char *dflt, *p;
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FILE *f;
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char line[100];
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dflt=NULL;
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f = fopen("/proc/net/route" , "r");
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while(fgets(line , 100 , f))
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{
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dflt = strtok(line , " \t");
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p = strtok(NULL , " \t");
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if(dflt!=NULL && p!=NULL)
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{
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if(strcmp(p , "00000000") == 0)
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{
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break;
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}
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}
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}
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for(n=0;n<IFLISTSIZ;n++) {
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interfacelist[n][0]=0;
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}
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ifnr=0;
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if (getifaddrs(&ifaddr) == -1) {
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strcpy((char*)info,"getifaddrs failure");
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} else {
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for (ifa = ifaddr, n = 0; ifa != NULL; ifa = ifa->ifa_next, n++) {
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if (ifa->ifa_addr == NULL)
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continue;
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family = ifa->ifa_addr->sa_family;
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if (family == AF_INET || family == AF_INET6) {
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s = getnameinfo(ifa->ifa_addr,
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(family == AF_INET) ? sizeof(struct sockaddr_in) :
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sizeof(struct sockaddr_in6),
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host, NI_MAXHOST,
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NULL, 0, NI_NUMERICHOST);
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if (s != 0) {
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LogInfo("getnameinfo() failed: %s\n", gai_strerror(s));
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continue;
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}
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if (family == AF_INET) {
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sprintf(interfacelist[ifnr], "%s: %s", ifa->ifa_name,host);
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LogInfo(" IPv4: %s", interfacelist[ifnr] );
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} else {
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sprintf(interfacelist[ifnr], "%s: %s", ifa->ifa_name,host);
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LogInfo(" IPv6: %s", interfacelist[ifnr] );
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}
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ifnr++;
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}
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}
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freeifaddrs(ifaddr);
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LogInfo(" Default interface is : %s" , dflt);
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for(n=0;n<(ifnr);n++) {
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p=strchr(interfacelist[n],'%');
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if (p!=NULL) *p=0;
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if(strstr(interfacelist[n], dflt) != 0)
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{
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strcpy((char*)info,interfacelist[n]);
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break;
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}
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}
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LogInfo(" IP to show: %s", info );
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}
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}
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