Socket::Ifaddr

Socket::Ifaddr represents a result of getifaddrs() function.

Public Instance Methods

addr => addrinfo

Returns the address of ifaddr. nil is returned if address is not available in ifaddr.

 
               static VALUE
ifaddr_addr(VALUE self)
{
    rb_ifaddr_t *rifaddr = get_ifaddr(self);
    struct ifaddrs *ifa = rifaddr->ifaddr;
    if (ifa->ifa_addr)
        return rsock_sockaddr_obj(ifa->ifa_addr, rsock_sockaddr_len(ifa->ifa_addr));
    return Qnil;
}

broadaddr => addrinfo

Returns the broadcast address of ifaddr. nil is returned if the flags doesn’t have IFF_BROADCAST.

 
               static VALUE
ifaddr_broadaddr(VALUE self)
{
    rb_ifaddr_t *rifaddr = get_ifaddr(self);
    struct ifaddrs *ifa = rifaddr->ifaddr;
    if ((ifa->ifa_flags & IFF_BROADCAST) && ifa->ifa_broadaddr)
        return rsock_sockaddr_obj(ifa->ifa_broadaddr, rsock_sockaddr_len(ifa->ifa_broadaddr));
    return Qnil;
}

dstaddr => addrinfo

Returns the destination address of ifaddr. nil is returned if the flags doesn’t have IFF_POINTOPOINT.

 
               static VALUE
ifaddr_dstaddr(VALUE self)
{
    rb_ifaddr_t *rifaddr = get_ifaddr(self);
    struct ifaddrs *ifa = rifaddr->ifaddr;
    if ((ifa->ifa_flags & IFF_POINTOPOINT) && ifa->ifa_dstaddr)
        return rsock_sockaddr_obj(ifa->ifa_dstaddr, rsock_sockaddr_len(ifa->ifa_dstaddr));
    return Qnil;
}

flags => integer

Returns the flags of ifaddr.

 
               static VALUE
ifaddr_flags(VALUE self)
{
    rb_ifaddr_t *rifaddr = get_ifaddr(self);
    struct ifaddrs *ifa = rifaddr->ifaddr;
    return IFAFLAGS2NUM(ifa->ifa_flags);
}

ifindex => integer

Returns the interface index of ifaddr.

 
               static VALUE
ifaddr_ifindex(VALUE self)
{
    rb_ifaddr_t *rifaddr = get_ifaddr(self);
    struct ifaddrs *ifa = rifaddr->ifaddr;
    unsigned int ifindex = if_nametoindex(ifa->ifa_name);
    if (ifindex == 0) {
        rb_raise(rb_eArgError, "invalid interface name: %s", ifa->ifa_name);
    }
    return UINT2NUM(ifindex);
}

inspect => string

Returns a string to show contents of ifaddr.

 
               static VALUE
ifaddr_inspect(VALUE self)
{
    rb_ifaddr_t *rifaddr = get_ifaddr(self);
    struct ifaddrs *ifa;
    VALUE result;

    ifa = rifaddr->ifaddr;

    result = rb_str_new_cstr("#<");

    rb_str_append(result, rb_class_name(CLASS_OF(self)));
    rb_str_cat2(result, " ");
    rb_str_cat2(result, ifa->ifa_name);

    if (ifa->ifa_flags)
        ifaddr_inspect_flags(ifa->ifa_flags, result);

    if (ifa->ifa_addr) {
      rb_str_cat2(result, " ");
      rsock_inspect_sockaddr(ifa->ifa_addr,
          rsock_sockaddr_len(ifa->ifa_addr),
          result);
    }
    if (ifa->ifa_netmask) {
      rb_str_cat2(result, " netmask=");
      rsock_inspect_sockaddr(ifa->ifa_netmask,
          rsock_sockaddr_len(ifa->ifa_netmask),
          result);
    }

    if ((ifa->ifa_flags & IFF_BROADCAST) && ifa->ifa_broadaddr) {
      rb_str_cat2(result, " broadcast=");
      rsock_inspect_sockaddr(ifa->ifa_broadaddr,
          rsock_sockaddr_len(ifa->ifa_broadaddr),
          result);
    }

    if ((ifa->ifa_flags & IFF_POINTOPOINT) && ifa->ifa_dstaddr) {
      rb_str_cat2(result, " dstaddr=");
      rsock_inspect_sockaddr(ifa->ifa_dstaddr,
          rsock_sockaddr_len(ifa->ifa_dstaddr),
          result);
    }

    rb_str_cat2(result, ">");
    return result;
}

name => string

Returns the interface name of ifaddr.

 
               static VALUE
ifaddr_name(VALUE self)
{
    rb_ifaddr_t *rifaddr = get_ifaddr(self);
    struct ifaddrs *ifa = rifaddr->ifaddr;
    return rb_str_new_cstr(ifa->ifa_name);
}

netmask => addrinfo

Returns the netmask address of ifaddr. nil is returned if netmask is not available in ifaddr.

 
               static VALUE
ifaddr_netmask(VALUE self)
{
    rb_ifaddr_t *rifaddr = get_ifaddr(self);
    struct ifaddrs *ifa = rifaddr->ifaddr;
    if (ifa->ifa_netmask)
        return rsock_sockaddr_obj(ifa->ifa_netmask, rsock_sockaddr_len(ifa->ifa_netmask));
    return Qnil;
}