void
configure_interface(int socket, const char* name, char* const* args,
int32 argCount)
{
ifreq request;
if (!prepare_request(request, name))
return;
uint32 index = 0;
if (ioctl(socket, SIOCGIFINDEX, &request, sizeof(request)) >= 0)
index = request.ifr_index;
bool hasAddress = false, hasMask = false, hasPeer = false;
bool hasBroadcast = false, doAutoConfig = false;
struct sockaddr address, mask, peer, broadcast;
int mtu = -1, metric = -1, media = -1;
int addFlags = 0, currentFlags = 0, removeFlags = 0;
// try to parse address family
int32 familyIndex;
int32 i = 0;
if (get_address_family(args[i], familyIndex))
i++;
if (kFamilies[familyIndex].family != AF_INET) {
close(socket);
// replace socket with one of the correct address family
socket = ::socket(kFamilies[familyIndex].family, SOCK_DGRAM, 0);
if (socket < 0) {
fprintf(stderr, "%s: Address family \"%s\" is not available.\n",
kProgramName, kFamilies[familyIndex].name);
exit(1);
}
}
if (index == 0) {
// the interface does not exist yet, we have to add it first
request.ifr_parameter.base_name[0] = '\0';
request.ifr_parameter.device[0] = '\0';
request.ifr_parameter.sub_type = 0;
// the default device is okay for us
if (ioctl(socket, SIOCAIFADDR, &request, sizeof(request)) < 0) {
fprintf(stderr, "%s: Could not add interface: %s\n", kProgramName,
strerror(errno));
exit(1);
}
}
// try to parse address
if (parse_address(familyIndex, args[i], address)) {
hasAddress = true;
i++;
if (parse_address(familyIndex, args[i], mask)) {
hasMask = true;
i++;
}
}
// parse parameters and flags
while (i < argCount) {
if (!strcmp(args[i], "peer")) {
if (!parse_address(familyIndex, args[i + 1], peer)) {
fprintf(stderr, "%s: Option 'peer' needs valid address "
"parameter\n", kProgramName);
exit(1);
}
hasPeer = true;
i++;
} else if (!strcmp(args[i], "nm") || !strcmp(args[i], "netmask")) {
if (hasMask) {
fprintf(stderr, "%s: Netmask is specified twice\n",
kProgramName);
exit(1);
}
if (!parse_address(familyIndex, args[i + 1], mask)) {
fprintf(stderr, "%s: Option 'netmask' needs valid address "
"parameter\n", kProgramName);
exit(1);
}
hasMask = true;
i++;
} else if (!strcmp(args[i], "bc") || !strcmp(args[i], "broadcast")) {
if (hasBroadcast) {
fprintf(stderr, "%s: broadcast address is specified twice\n",
kProgramName);
exit(1);
}
if (!parse_address(familyIndex, args[i + 1], broadcast)) {
fprintf(stderr, "%s: Option 'broadcast' needs valid address "
"parameter\n", kProgramName);
exit(1);
}
hasBroadcast = true;
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' exptected parameter\n",
kProgramName);
exit(1);
}
metric = strtol(args[i + 1], NULL, 0);
i++;
} else if (!strcmp(args[i], "media")) {
if (ioctl(socket, SIOCGIFMEDIA, &request,
sizeof(struct ifreq)) < 0) {
fprintf(stderr, "%s: Unable to detect media type\n",
kProgramName);
exit(1);
}
if (i + 1 >= argCount) {
fprintf(stderr, "%s: Option 'media' exptected parameter\n",
kProgramName);
exit(1);
}
if (!media_parse_subtype(args[i + 1], IFM_TYPE(request.ifr_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 && (hasAddress || hasMask || hasBroadcast || hasPeer)) {
fprintf(stderr, "%s: Contradicting changes specified\n", kProgramName);
exit(1);
}
// set address/mask/broadcast/peer
if (hasAddress) {
memcpy(&request.ifr_addr, &address, address.sa_len);
if (ioctl(socket, SIOCSIFADDR, &request, sizeof(struct ifreq)) < 0) {
fprintf(stderr, "%s: Setting address failed: %s\n", kProgramName,
strerror(errno));
exit(1);
}
}
if (ioctl(socket, SIOCGIFFLAGS, &request, sizeof(struct ifreq)) < 0) {
fprintf(stderr, "%s: Getting flags failed: %s\n", kProgramName,
strerror(errno));
exit(1);
}
currentFlags = request.ifr_flags;
if (hasMask) {
memcpy(&request.ifr_mask, &mask, mask.sa_len);
if (ioctl(socket, SIOCSIFNETMASK, &request, sizeof(struct ifreq)) < 0) {
fprintf(stderr, "%s: Setting subnet mask failed: %s\n",
kProgramName, strerror(errno));
exit(1);
}
}
if (hasBroadcast) {
memcpy(&request.ifr_broadaddr, &broadcast, broadcast.sa_len);
if (ioctl(socket, SIOCSIFBRDADDR, &request, sizeof(struct ifreq)) < 0) {
fprintf(stderr, "%s: Setting broadcast address failed: %s\n",
kProgramName, strerror(errno));
exit(1);
}
}
if (hasPeer) {
memcpy(&request.ifr_dstaddr, &peer, peer.sa_len);
if (ioctl(socket, SIOCSIFDSTADDR, &request, sizeof(struct ifreq)) < 0) {
fprintf(stderr, "%s: Setting peer address failed: %s\n",
kProgramName, strerror(errno));
exit(1);
}
}
// set flags
if (hasAddress || hasMask || hasBroadcast || hasPeer)
removeFlags = IFF_AUTO_CONFIGURED | IFF_CONFIGURING;
if (addFlags || removeFlags) {
request.ifr_flags = (currentFlags & ~removeFlags) | addFlags;
if (ioctl(socket, SIOCSIFFLAGS, &request, sizeof(struct ifreq)) < 0) {
fprintf(stderr, "%s: Setting flags failed: %s\n", kProgramName,
strerror(errno));
}
}
// set options
if (mtu != -1) {
request.ifr_mtu = mtu;
if (ioctl(socket, SIOCSIFMTU, &request, sizeof(struct ifreq)) < 0) {
fprintf(stderr, "%s: Setting MTU failed: %s\n", kProgramName,
strerror(errno));
}
}
if (metric != -1) {
request.ifr_metric = metric;
if (ioctl(socket, SIOCSIFMETRIC, &request, sizeof(struct ifreq)) < 0) {
fprintf(stderr, "%s: Setting metric failed: %s\n", kProgramName,
strerror(errno));
}
}
if (media != -1) {
request.ifr_media = media;
if (ioctl(socket, SIOCSIFMEDIA, &request, sizeof(struct ifreq)) < 0) {
fprintf(stderr, "%s: Setting media failed: %s\n", kProgramName,
strerror(errno));
}
}
// start auto configuration, if asked for
if (doAutoConfig) {
BMessage message(kMsgConfigureInterface);
message.AddString("device", name);
BMessage address;
address.AddString("family", "inet");
address.AddBool("auto_config", true);
message.AddMessage("address", &address);
BMessenger networkServer(kNetServerSignature);
if (networkServer.IsValid()) {
BMessage reply;
status_t status = networkServer.SendMessage(&message, &reply);
if (status != B_OK) {
fprintf(stderr, "%s: Sending auto-config message failed: %s\n",
kProgramName, strerror(status));
} else if (reply.FindInt32("status", &status) == B_OK
&& status != B_OK) {
fprintf(stderr, "%s: Auto-configuring failed: %s\n",
kProgramName, strerror(status));
}
} else {
fprintf(stderr, "%s: The net_server needs to run for the auto "
"configuration!\n", kProgramName);
}
}
}
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));
}
}
}
