diff options
Diffstat (limited to 'hicn-light/src/platforms/darwin')
-rwxr-xr-x | hicn-light/src/platforms/darwin/system.c | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/hicn-light/src/platforms/darwin/system.c b/hicn-light/src/platforms/darwin/system.c new file mode 100755 index 000000000..b8ef80c63 --- /dev/null +++ b/hicn-light/src/platforms/darwin/system.c @@ -0,0 +1,146 @@ +/* + * Copyright (c) 2017-2019 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include <errno.h> +#include <ifaddrs.h> +#include <src/config.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <sys/types.h> + +#include <net/if.h> +#include <net/if_dl.h> +#include <net/if_types.h> +#include <sys/socket.h> + +#include <parc/assert/parc_Assert.h> + +#include <src/utils/interfaceSet.h> + +#include <src/core/forwarder.h> +#include <src/core/system.h> + +InterfaceSet *system_Interfaces(Forwarder *forwarder) { + InterfaceSet *set = interfaceSetCreate(); + + // this is the dynamically allocated head of the list + struct ifaddrs *ifaddr; + int failure = getifaddrs(&ifaddr); + parcAssertFalse(failure, "Error getifaddrs: (%d) %s", errno, strerror(errno)); + + struct ifaddrs *next; + for (next = ifaddr; next != NULL; next = next->ifa_next) { + if ((next->ifa_addr == NULL) || ((next->ifa_flags & IFF_UP) == 0)) { + continue; + } + + // This assumes the LINK address comes first so we can get the MTU + // when the interface is created. + + Interface *iface = interfaceSetGetByName(set, next->ifa_name); + if (iface == NULL) { + unsigned mtu = 0; + + if (next->ifa_data != NULL) { + struct if_data *ifdata = (struct if_data *)next->ifa_data; + mtu = ifdata->ifi_mtu; + } + + iface = interfaceCreate( + next->ifa_name, forwarder_GetNextConnectionId(forwarder), + next->ifa_flags & IFF_LOOPBACK, next->ifa_flags & IFF_MULTICAST, mtu); + + interfaceSetAdd(set, iface); + } + + int family = next->ifa_addr->sa_family; + switch (family) { + case AF_INET: { + Address *address = + addressCreateFromInet((struct sockaddr_in *)next->ifa_addr); + interfaceAddAddress(iface, address); + break; + } + + case AF_INET6: { + Address *address = + addressCreateFromInet6((struct sockaddr_in6 *)next->ifa_addr); + interfaceAddAddress(iface, address); + break; + } + + case AF_LINK: { + struct sockaddr_dl *addr_dl = (struct sockaddr_dl *)next->ifa_addr; + + // skip links with 0-length address + if (addr_dl->sdl_alen > 0) { + // addr_dl->sdl_data[12] contains the interface name followed by the + // MAC address, so need to offset in to the array past the interface + // name. + Address *address = addressCreateFromLink( + (uint8_t *)&addr_dl->sdl_data[addr_dl->sdl_nlen], + addr_dl->sdl_alen); + interfaceAddAddress(iface, address); + } + break; + } + } + } + + freeifaddrs(ifaddr); + + return set; +} + +Address *system_GetMacAddressByName(Forwarder *forwarder, + const char *interfaceName) { + Address *linkAddress = NULL; + + InterfaceSet *interfaceSet = system_Interfaces(forwarder); + Interface *interface = interfaceSetGetByName(interfaceSet, interfaceName); + + if (interface) { + const AddressList *addressList = interfaceGetAddresses(interface); + + size_t length = addressListLength(addressList); + for (size_t i = 0; i < length && !linkAddress; i++) { + const Address *a = addressListGetItem(addressList, i); + if (addressGetType(a) == ADDR_LINK) { + linkAddress = addressCopy(a); + } + } + } + + interfaceSetDestroy(&interfaceSet); + + return linkAddress; +} + +unsigned system_InterfaceMtu(Forwarder *forwarder, const char *interfaceName) { + unsigned mtu = 0; + + if (interfaceName) { + InterfaceSet *interfaceSet = system_Interfaces(forwarder); + Interface *interface = interfaceSetGetByName(interfaceSet, interfaceName); + + if (interface) { + mtu = interfaceGetMTU(interface); + } + + interfaceSetDestroy(&interfaceSet); + } + return mtu; +} |