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-rw-r--r--ctrl/libhicnctrl/examples/create_face.c134
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diff --git a/ctrl/libhicnctrl/examples/create_face.c b/ctrl/libhicnctrl/examples/create_face.c
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+/*
+ * 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.
+ */
+
+/**
+ * \file examples/create_face.c
+ * \brief libhicnctrl sample code : IPV4/UDP face creation
+ *
+ * NOTES:
+ * - This sample code is IPv4 only
+ */
+
+#include <stdlib.h>
+#include <sys/types.h> // getifaddrs
+#include <ifaddrs.h> // getifaddrs
+#include <stdio.h>
+#include <string.h> /* for strncpy */
+#include <sys/socket.h> // socket
+#include <sys/ioctl.h> // ioctl
+#include <unistd.h>
+
+#include <hicn/ctrl.h>
+#include <hicn/util/log.h>
+
+int get_local_info(char * if_name, ip_address_t * local_ip) {
+ struct ifaddrs *addrs;
+ struct ifreq ifr = {
+ .ifr_addr.sa_family = AF_INET,
+ };
+ int ret = -1;
+
+ int fd = socket(AF_INET, SOCK_DGRAM, 0);
+
+ getifaddrs(&addrs);
+
+ for (struct ifaddrs * tmp = addrs; tmp; tmp = tmp->ifa_next) {
+ if (!tmp->ifa_addr || tmp->ifa_addr->sa_family != AF_PACKET)
+ continue;
+ if (strcmp(tmp->ifa_name, "lo") == 0)
+ continue;
+ snprintf(if_name, IFNAMSIZ, "%s", tmp->ifa_name);
+
+ snprintf(ifr.ifr_name, IFNAMSIZ, "%s", tmp->ifa_name);
+ if (ioctl(fd, SIOCGIFADDR, &ifr) == 1) {
+ perror("ioctl");
+ continue;
+ }
+
+ local_ip->v4.as_inaddr = ((struct sockaddr_in *)&ifr.ifr_addr)->sin_addr;
+
+ ret = 0;
+ break;
+ }
+
+ freeifaddrs(addrs);
+ close(fd);
+ return ret;
+}
+
+int main() {
+ char remote_ip_str[INET_ADDRSTRLEN] = "1.1.1.1";
+
+ ip_address_t local_ip;
+ ip_address_t remote_ip;
+ char if_name[IFNAMSIZ];
+
+ /* Retrieving local info */
+
+ if (get_local_info(if_name, &local_ip) < 0) {
+ DEBUG("Error getting local information");
+ return -1;
+ }
+
+ char local_ip_str[MAXSZ_IP_ADDRESS];
+ ip_address_snprintf(local_ip_str, MAXSZ_IP_ADDRESS, &local_ip, AF_INET);
+ DEBUG("Local information :");
+ DEBUG(" - Interface name : %s", if_name);
+ DEBUG(" - IP address : %s", local_ip_str);
+
+ if (ip_address_pton (remote_ip_str, &remote_ip) < 0){
+ DEBUG("Error parsing remote IP address");
+ return -1;
+ }
+
+ /* Filling face information */
+ hc_face_t face = {
+ .face = {
+ .type = FACE_TYPE_UDP,
+ .local_addr = local_ip,
+ .remote_addr = remote_ip,
+ .local_port = 6000,
+ .remote_port = 6000,
+ },
+ };
+ if (netdevice_set_name(&face.face.netdevice, if_name) < 0) {
+ DEBUG("Error setting face netdevice name");
+ return -1;
+ }
+
+ /* Connecting to socket and creating face */
+
+ hc_sock_t * socket = hc_sock_create();
+ if (!socket){
+ DEBUG("Error creating libhicnctrl socket");
+ return -1;
+ }
+
+ if (hc_sock_connect(socket) < 0){
+ DEBUG("Error connecting to forwarder");
+ return -1;
+ }
+
+ if (hc_face_create(socket, &face) < 0){
+ DEBUG("Error creating face");
+ return -1;
+ }
+
+ DEBUG("Face created successfully");
+
+ hc_sock_free(socket);
+
+ return 0;
+}