void
configure_interface(const char* name, char* const* args, int32 argCount)
{
// try to parse address family
int32 i = 0;
int family = get_address_family(args[i]);
if (family != AF_UNSPEC)
i++;
// try to parse address
BNetworkAddress address;
BNetworkAddress mask;
if (parse_address(family, args[i], address)) {
i++;
if (parse_address(family, args[i], mask))
i++;
}
BNetworkInterface interface(name);
if (!interface.Exists()) {
// the interface does not exist yet, we have to add it first
BNetworkRoster& roster = BNetworkRoster::Default();
status_t status = roster.AddInterface(interface);
if (status != B_OK) {
fprintf(stderr, "%s: Could not add interface: %s\n", kProgramName,
strerror(status));
exit(1);
}
}
BNetworkAddress broadcast;
BNetworkAddress peer;
int mtu = -1, metric = -1, media = -1;
int addFlags = 0, currentFlags = 0, removeFlags = 0;
bool doAutoConfig = false;
// parse parameters and flags
while (i < argCount) {
if (!strcmp(args[i], "peer")) {
if (!parse_address(family, args[i + 1], peer)) {
fprintf(stderr, "%s: Option 'peer' needs valid address "
"parameter\n", kProgramName);
exit(1);
}
i++;
} else if (!strcmp(args[i], "nm") || !strcmp(args[i], "netmask")) {
if (!mask.IsEmpty()) {
fprintf(stderr, "%s: Netmask or prefix length is specified "
"twice\n", kProgramName);
exit(1);
}
if (!parse_address(family, args[i + 1], mask)) {
fprintf(stderr, "%s: Option 'netmask' needs valid address "
"parameter\n", kProgramName);
exit(1);
}
i++;
} else if (!strcmp(args[i], "prefixlen") || !strcmp(args[i], "plen")
|| !strcmp(args[i], "prefix-length")) {
if (!mask.IsEmpty()) {
fprintf(stderr, "%s: Netmask or prefix length is specified "
"twice\n", kProgramName);
exit(1);
}
// default to AF_INET if no address family has been specified yet
if (family == AF_UNSPEC)
family = AF_INET;
if (!prefix_length_to_mask(family, args[i + 1], mask)) {
fprintf(stderr, "%s: Option 'prefix-length %s' is invalid for "
"this address family\n", kProgramName, args[i + 1]);
exit(1);
}
i++;
} else if (!strcmp(args[i], "bc") || !strcmp(args[i], "broadcast")) {
if (!broadcast.IsEmpty()) {
fprintf(stderr, "%s: broadcast address is specified twice\n",
kProgramName);
exit(1);
}
if (!parse_address(family, args[i + 1], broadcast)) {
fprintf(stderr, "%s: Option 'broadcast' needs valid address "
"parameter\n", kProgramName);
exit(1);
}
addFlags |= IFF_BROADCAST;
i++;
} else if (!strcmp(args[i], "mtu")) {
mtu = args[i + 1] ? strtol(args[i + 1], NULL, 0) : 0;
if (mtu <= 500) {
fprintf(stderr, "%s: Option 'mtu' expected valid max transfer "
"unit size\n", kProgramName);
exit(1);
}
i++;
} else if (!strcmp(args[i], "metric")) {
if (i + 1 >= argCount) {
fprintf(stderr, "%s: Option 'metric' expected parameter\n",
kProgramName);
exit(1);
}
metric = strtol(args[i + 1], NULL, 0);
i++;
} else if (!strcmp(args[i], "media")) {
media = interface.Media();
if (media < 0) {
fprintf(stderr, "%s: Unable to detect media type\n",
kProgramName);
exit(1);
}
if (i + 1 >= argCount) {
fprintf(stderr, "%s: Option 'media' expected parameter\n",
kProgramName);
exit(1);
}
if (!media_parse_subtype(args[i + 1], IFM_TYPE(media), &media)) {
fprintf(stderr, "%s: Invalid parameter for option 'media': "
"'%s'\n", kProgramName, args[i + 1]);
exit(1);
}
i++;
} else if (!strcmp(args[i], "up") || !strcmp(args[i], "-down")) {
addFlags |= IFF_UP;
} else if (!strcmp(args[i], "down") || !strcmp(args[i], "-up")) {
removeFlags |= IFF_UP;
} else if (!strcmp(args[i], "bcast")) {
addFlags |= IFF_BROADCAST;
} else if (!strcmp(args[i], "-bcast")) {
removeFlags |= IFF_BROADCAST;
} else if (!strcmp(args[i], "promisc")) {
addFlags |= IFF_PROMISC;
} else if (!strcmp(args[i], "-promisc")) {
removeFlags |= IFF_PROMISC;
} else if (!strcmp(args[i], "allmulti")) {
addFlags |= IFF_ALLMULTI;
} else if (!strcmp(args[i], "-allmulti")) {
removeFlags |= IFF_ALLMULTI;
} else if (!strcmp(args[i], "loopback")) {
addFlags |= IFF_LOOPBACK;
} else if (!strcmp(args[i], "auto-config")) {
doAutoConfig = true;
} else
usage(1);
i++;
}
if ((addFlags & removeFlags) != 0) {
fprintf(stderr, "%s: Contradicting flags specified\n", kProgramName);
exit(1);
}
if (doAutoConfig && (!address.IsEmpty() || !mask.IsEmpty()
|| !broadcast.IsEmpty() || !peer.IsEmpty())) {
fprintf(stderr, "%s: Contradicting changes specified\n", kProgramName);
exit(1);
}
// set address/mask/broadcast/peer
if (!address.IsEmpty() || !mask.IsEmpty() || !broadcast.IsEmpty()) {
BNetworkInterfaceAddress interfaceAddress;
interfaceAddress.SetAddress(address);
interfaceAddress.SetMask(mask);
if (!broadcast.IsEmpty())
interfaceAddress.SetBroadcast(broadcast);
else if (!peer.IsEmpty())
interfaceAddress.SetDestination(peer);
status_t status = interface.SetAddress(interfaceAddress);
if (status != B_OK) {
fprintf(stderr, "%s: Setting address failed: %s\n", kProgramName,
strerror(status));
exit(1);
}
}
currentFlags = interface.Flags();
// set flags
if (!address.IsEmpty() || !mask.IsEmpty() || !broadcast.IsEmpty()
|| !peer.IsEmpty())
removeFlags = IFF_AUTO_CONFIGURED | IFF_CONFIGURING;
if (addFlags || removeFlags) {
status_t status
= interface.SetFlags((currentFlags & ~removeFlags) | addFlags);
if (status != B_OK) {
fprintf(stderr, "%s: Setting flags failed: %s\n", kProgramName,
strerror(status));
}
}
// set options
if (mtu != -1) {
status_t status = interface.SetMTU(mtu);
if (status != B_OK) {
fprintf(stderr, "%s: Setting MTU failed: %s\n", kProgramName,
strerror(status));
}
}
if (metric != -1) {
status_t status = interface.SetMetric(metric);
if (status != B_OK) {
fprintf(stderr, "%s: Setting metric failed: %s\n", kProgramName,
strerror(status));
}
}
if (media != -1) {
status_t status = interface.SetMedia(media);
if (status != B_OK) {
fprintf(stderr, "%s: Setting media failed: %s\n", kProgramName,
strerror(status));
}
}
// start auto configuration, if asked for
if (doAutoConfig) {
status_t status = interface.AutoConfigure(family);
if (status == B_BAD_PORT_ID) {
fprintf(stderr, "%s: The net_server needs to run for the auto "
"configuration!\n", kProgramName);
} else if (status != B_OK) {
fprintf(stderr, "%s: Auto-configuring failed: %s\n", kProgramName,
strerror(status));
}
}
}
int
main(int argc, char** argv)
{
if (argc > 1 && (!strcmp(argv[1], "--help") || !strcmp(argv[1], "-h")))
usage(0);
int32 mode = RTM_LIST;
if (argc > 1) {
if (!strcmp(argv[1], "delete")
|| !strcmp(argv[1], "del")
|| !strcmp(argv[1], "-d")) {
// delete route
if (argc < 3)
usage(1);
mode = RTM_DELETE;
} else if (!strcmp(argv[1], "add")
|| !strcmp(argv[1], "-a")) {
// add route
if (argc < 3)
usage(1);
mode = RTM_ADD;
} else if (!strcmp(argv[1], "get")) {
// get route for destination
if (argc < 3)
usage(1);
mode = RTM_GET;
}
}
int32 i = 2;
int32 interfaceIndex = i;
bool familySpecified = false;
int32 familyIndex = 0;
const char *interface = NULL;
BNetworkAddress destination;
BNetworkAddress mask;
BNetworkAddress gateway;
bool defaultRoute = false;
route_entry route;
memset(&route, 0, sizeof(route_entry));
while (i < argc && i < 5) {
// try to parse address family
if (i <= 3 && familySpecified == false
&& get_address_family(argv[i], familyIndex)) {
familySpecified = true;
if (i == 2)
interfaceIndex = -1;
}
if (!strcmp(argv[i], "default")) {
defaultRoute = true;
route.flags = RTF_DEFAULT;
i++;
break;
} else if (parse_address(familyIndex, argv[i], destination)) {
i++;
break;
}
i++;
}
if (!defaultRoute && destination.IsEmpty() && mode != RTM_LIST)
usage(1);
if (i == 3)
interfaceIndex = -1;
if (interfaceIndex != -1 && interfaceIndex < argc)
interface = argv[interfaceIndex];
if (i < argc && parse_address(familyIndex, argv[i], mask))
i++;
// parse options and flags
while (i < argc) {
if (!strcmp(argv[i], "gw") || !strcmp(argv[i], "gateway")) {
if (!parse_address(familyIndex, argv[i + 1], gateway)) {
fprintf(stderr, "%s: Option 'gw' needs valid address "
"parameter\n", kProgramName);
exit(1);
}
i++;
} else if (!strcmp(argv[i], "nm") || !strcmp(argv[i], "netmask")) {
if (!mask.IsEmpty()) {
fprintf(stderr, "%s: Netmask or prefix length is specified "
"twice\n", kProgramName);
exit(1);
}
if (!parse_address(familyIndex, argv[i + 1], mask)) {
fprintf(stderr, "%s: Option 'netmask' needs valid address "
"parameter\n", kProgramName);
exit(1);
}
i++;
} else if (!strcmp(argv[i], "plen") || !strcmp(argv[i], "prefixlen")
|| !strcmp(argv[i], "prefix-length")) {
if (!mask.IsEmpty()) {
fprintf(stderr, "%s: Netmask or prefix length is specified "
"twice\n", kProgramName);
exit(1);
}
if (!prefix_length_to_mask(familyIndex, argv[i + 1], mask)) {
fprintf(stderr, "%s: Option 'prefixlen' is invalid for this "
"address family\n", kProgramName);
exit(1);
}
i++;
} else if (!strcmp(argv[i], "mtu")) {
route.mtu = argv[i + 1] ? strtol(argv[i + 1], NULL, 0) : 0;
if (route.mtu <= 500) {
fprintf(stderr, "%s: Option 'mtu' exptected valid max transfer "
"unit size\n", kProgramName);
exit(1);
}
i++;
} else if (!strcmp(argv[i], "host")) {
route.flags |= RTF_HOST;
} else if (!strcmp(argv[i], "local")) {
route.flags |= RTF_LOCAL;
} else if (!strcmp(argv[i], "reject")) {
route.flags |= RTF_REJECT;
} else
usage(1);
i++;
}
if (!destination.IsEmpty())
route.destination = (sockaddr*)destination;
if (!mask.IsEmpty())
route.mask = (sockaddr*)mask;
if (!gateway.IsEmpty()) {
route.gateway = (sockaddr*)gateway;
route.flags |= RTF_GATEWAY;
}
// we need a socket to talk to the networking stack
int socket = ::socket(kFamilies[familyIndex].family, SOCK_DGRAM, 0);
if (socket < 0) {
fprintf(stderr, "%s: The requested address family is not available.\n",
kProgramName);
return 1;
}
switch (mode) {
case RTM_ADD:
if (interface == NULL) {
fprintf(stderr, "%s: You need to specify an interface when "
"adding a route.\n", kProgramName);
usage(1);
}
add_route(socket, interface, route);
break;
case RTM_DELETE:
if (interface == NULL) {
fprintf(stderr, "%s: You need to specify an interface when "
"removing a route.\n", kProgramName);
usage(1);
}
delete_route(socket, interface, route);
break;
case RTM_LIST:
if (familySpecified)
list_routes(socket, interface, route);
else {
for (int32 i = 0; kFamilies[i].family >= 0; i++) {
int socket = ::socket(kFamilies[i].family, SOCK_DGRAM, 0);
if (socket < 0)
continue;
list_routes(socket, interface, route);
close(socket);
}
}
break;
case RTM_GET:
get_route(socket, route);
break;
}
close(socket);
return 0;
}
