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Diff for /embedaddon/iftop/addrs_ioctl.c between versions 1.1 and 1.1.1.2

version 1.1, 2012/02/21 16:57:34 version 1.1.1.2, 2016/10/18 14:04:50
Line 18 Line 18
 #include <net/if.h>  #include <net/if.h>
 #include <netinet/in.h>  #include <netinet/in.h>
   
#if defined __FreeBSD__ || defined __OpenBSD__ || defined __APPLE__#if defined __FreeBSD__ || defined __OpenBSD__ || defined __APPLE__ \
       || ( defined __GLIBC__ && ! defined __linux__ )
 #include <sys/param.h>  #include <sys/param.h>
 #include <sys/sysctl.h>  #include <sys/sysctl.h>
 #include <net/if_dl.h>  #include <net/if_dl.h>
 #endif  #endif
   
   #ifdef USE_GETIFADDRS
   #include <ifaddrs.h>
   #endif
   
 #include "iftop.h"  #include "iftop.h"
   
 /*  /*
Line 40 Line 45
  */   */
   
 int  int
get_addrs_ioctl(char *interface, char if_hw_addr[], struct in_addr *if_ip_addr)get_addrs_ioctl(char *interface, char if_hw_addr[], struct in_addr *if_ip_addr, struct in6_addr *if_ip6_addr)
 {  {
   int s;    int s;
   struct ifreq ifr = {};    struct ifreq ifr = {};
   int got_hw_addr = 0;    int got_hw_addr = 0;
   int got_ip_addr = 0;    int got_ip_addr = 0;
     int got_ip6_addr = 0;
   #ifdef USE_GETIFADDRS
     struct ifaddrs *ifa, *ifas;
   #endif
   
   /* -- */    /* -- */
   
  s = socket(PF_INET, SOCK_DGRAM, 0); /* any sort of IP socket will do */  s = socket(AF_INET, SOCK_DGRAM, 0); /* any sort of IP socket will do */
   
   if (s == -1) {    if (s == -1) {
     perror("socket");      perror("socket");
Line 71  get_addrs_ioctl(char *interface, char if_hw_addr[], st Line 80  get_addrs_ioctl(char *interface, char if_hw_addr[], st
     got_hw_addr = 1;      got_hw_addr = 1;
   }    }
 #else  #else
#if defined __FreeBSD__ || defined __OpenBSD__ || defined __APPLE__#if defined __FreeBSD__ || defined __OpenBSD__ || defined __APPLE__ \
       || ( defined __GLIBC__ && ! defined __linux__ )
   {    {
     int sysctlparam[6] = {CTL_NET, PF_ROUTE, 0, 0, NET_RT_IFLIST, 0};      int sysctlparam[6] = {CTL_NET, PF_ROUTE, 0, 0, NET_RT_IFLIST, 0};
     size_t needed = 0;      size_t needed = 0;
Line 80  get_addrs_ioctl(char *interface, char if_hw_addr[], st Line 90  get_addrs_ioctl(char *interface, char if_hw_addr[], st
     sysctlparam[5] = if_nametoindex(interface);      sysctlparam[5] = if_nametoindex(interface);
     if (sysctlparam[5] == 0) {      if (sysctlparam[5] == 0) {
       fprintf(stderr, "Error getting hardware address for interface: %s\n", interface);        fprintf(stderr, "Error getting hardware address for interface: %s\n", interface);
       goto ENDHWADDR;  
     }      }
    if (sysctl(sysctlparam, 6, NULL, &needed, NULL, 0) < 0) {    else if (sysctl(sysctlparam, 6, NULL, &needed, NULL, 0) < 0) {
       fprintf(stderr, "Error getting hardware address for interface: %s\n", interface);        fprintf(stderr, "Error getting hardware address for interface: %s\n", interface);
       goto ENDHWADDR;  
     }      }
    if ((buf = malloc(needed)) == NULL) {    else if ((buf = malloc(needed)) == NULL) {
       fprintf(stderr, "Error getting hardware address for interface: %s\n", interface);        fprintf(stderr, "Error getting hardware address for interface: %s\n", interface);
       goto ENDHWADDR;  
     }      }
    if (sysctl(sysctlparam, 6, buf, &needed, NULL, 0) < 0) {    else if (sysctl(sysctlparam, 6, buf, &needed, NULL, 0) < 0) {
       fprintf(stderr, "Error getting hardware address for interface: %s\n", interface);        fprintf(stderr, "Error getting hardware address for interface: %s\n", interface);
       free(buf);        free(buf);
       goto ENDHWADDR;  
     }      }
    msghdr = (struct if_msghdr *) buf;    else {
    memcpy(if_hw_addr, LLADDR((struct sockaddr_dl *)(buf + sizeof(struct if_msghdr) - sizeof(struct if_data) + sizeof(struct if_data))), 6);      msghdr = (struct if_msghdr *) buf;
    free(buf);      memcpy(if_hw_addr, LLADDR((struct sockaddr_dl *)(buf + sizeof(struct if_msghdr) - sizeof(struct if_data) + sizeof(struct if_data))), 6);
    got_hw_addr = 1;      free(buf);
      got_hw_addr = 1;
  ENDHWADDR:    }
    1; /* compiler whines if there is a label at the end of a block...*/ 
   }    }
 #else  #else
   fprintf(stderr, "Cannot obtain hardware address on this platform\n");    fprintf(stderr, "Cannot obtain hardware address on this platform\n");
Line 109  get_addrs_ioctl(char *interface, char if_hw_addr[], st Line 114  get_addrs_ioctl(char *interface, char if_hw_addr[], st
 #endif  #endif
       
   /* Get the IP address of the interface */    /* Get the IP address of the interface */
#ifdef SIOCGIFADDR#ifdef USE_GETIFADDRS
   if (getifaddrs(&ifas) == -1) {
     fprintf(stderr, "Unable to get IP address for interface: %s\n", interface); 
     perror("getifaddrs()");
   }
   else {
      for (ifa = ifas; ifa != NULL; ifa = ifa->ifa_next) {
         if (got_ip_addr && got_ip6_addr)
            break; /* Search is already complete. */
 
         if (strcmp(ifa->ifa_name, interface))
            continue; /* Not our interface. */
 
         if (ifa->ifa_addr == NULL)
            continue; /* Skip NULL interface address. */
 
         if ( (ifa->ifa_addr->sa_family != AF_INET)
               && (ifa->ifa_addr->sa_family != AF_INET6) )
            continue; /* AF_PACKET is beyond our scope. */
 
         if ( (ifa->ifa_addr->sa_family == AF_INET)
               && !got_ip_addr ) {
            got_ip_addr = 2;
            memcpy(if_ip_addr,
                  &(((struct sockaddr_in *) ifa->ifa_addr)->sin_addr),
                  sizeof(*if_ip_addr));
            continue;
         }
         /* Must be a IPv6 address at this point. */
         struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *) ifa->ifa_addr;
 
         if ( IN6_IS_ADDR_LINKLOCAL(&(sa6->sin6_addr))
               || IN6_IS_ADDR_SITELOCAL(&(sa6->sin6_addr)) )
            continue;
 
         /* A useful IPv6 address. */
         memcpy(if_ip6_addr, &(sa6->sin6_addr), sizeof(*if_ip6_addr));
         got_ip6_addr = 4;
      }
      freeifaddrs(ifas);
   } /* getifaddrs() */
 #elif defined(SIOCGIFADDR)
   (*(struct sockaddr_in *) &ifr.ifr_addr).sin_family = AF_INET;    (*(struct sockaddr_in *) &ifr.ifr_addr).sin_family = AF_INET;
   if (ioctl(s, SIOCGIFADDR, &ifr) < 0) {    if (ioctl(s, SIOCGIFADDR, &ifr) < 0) {
     fprintf(stderr, "Unable to get IP address for interface: %s\n", interface);       fprintf(stderr, "Unable to get IP address for interface: %s\n", interface); 
Line 125  get_addrs_ioctl(char *interface, char if_hw_addr[], st Line 171  get_addrs_ioctl(char *interface, char if_hw_addr[], st
       
   close(s);    close(s);
   
  return got_hw_addr + got_ip_addr;  return got_hw_addr + got_ip_addr + got_ip6_addr;
 }  }
Removed from v.1.1  
changed lines
  Added in v.1.1.1.2

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