Method: Capp.devices

Defined in:
ext/capp/capp.c

.devices ⇒ Array

Returns an Array containing the devices and their addresses:

[#<struct Capp::Address
  address="lo0",
  netmask=nil,
  broadcast=
   [#<struct Capp::Address
     address="0:0:0:0:0:0",
     netmask=nil,
     broadcast=nil,
     destination=nil>,
    #<struct Capp::Address
     address="fe80::1%lo0",
     netmask="ffff:ffff:ffff:ffff::",
     broadcast=nil,
     destination=nil>,
    #<struct Capp::Address
     address="127.0.0.1",
     netmask="255.0.0.0",
     broadcast=nil,
     destination=nil>,
    #<struct Capp::Address
     address="::1",
     netmask="ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff",
     broadcast=nil,
     destination=nil>],
  destination=1>,
  # [...]
]

Returns:

  • (Array) 


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# File 'ext/capp/capp.c', line 236

static VALUE
capp_s_devices(VALUE klass)
{
    VALUE device, devices, dev_args[4];
    char errbuf[PCAP_ERRBUF_SIZE];
    pcap_if_t *iface, *ifaces;

    *errbuf = '\0';

    if (pcap_findalldevs(&ifaces, errbuf))
	rb_raise(eCappError, "pcap_create: %s", errbuf);

    if (*errbuf)
	rb_warn("%s", errbuf);

    devices = rb_ary_new();

    for (iface = ifaces; iface; iface = iface->next) {
	dev_args[0] = rb_usascii_str_new_cstr(iface->name);
	if (iface->description) {
	    dev_args[1] = rb_usascii_str_new_cstr(iface->description);
	} else {
	    dev_args[1] = Qnil;
	}
	dev_args[2] = capp_addr_to_addresses(iface->addresses);
	dev_args[3] = UINT2NUM(iface->flags);

	device = rb_class_new_instance(4, dev_args, cCappDevice);

	rb_ary_push(devices, device);
    }

    pcap_freealldevs(ifaces);

    return devices;
}