diff options
| -rw-r--r-- | ctrl/libhicnctrl/examples/Makefile | 20 | ||||
| -rw-r--r-- | ctrl/libhicnctrl/examples/create_face.c | 134 |
2 files changed, 154 insertions, 0 deletions
diff --git a/ctrl/libhicnctrl/examples/Makefile b/ctrl/libhicnctrl/examples/Makefile new file mode 100644 index 000000000..a6c6f0570 --- /dev/null +++ b/ctrl/libhicnctrl/examples/Makefile @@ -0,0 +1,20 @@ +EXEC = $(shell basename $$(pwd)) +CC = gcc + +CFLAGS = -std=gnu11 -O3 -Wall -Wextra -Wpedantic -Wstrict-aliasing -DWITH_POLICY=1 +LDFLAGS = -lhicn -lhicnctrl + +SRC = $(wildcard *.c) +EXEC = $(SRC:.c=) + +all: $(EXEC) + +${EXEC}: $(SRC) + $(CC) -o $@ $< $(CFLAGS) $(LDFLAGS) + +.PHONY: clean mrproper + +clean: + @rm -rf $(EXEC) + +mrproper: clean diff --git a/ctrl/libhicnctrl/examples/create_face.c b/ctrl/libhicnctrl/examples/create_face.c new file mode 100644 index 000000000..270ceeab9 --- /dev/null +++ b/ctrl/libhicnctrl/examples/create_face.c @@ -0,0 +1,134 @@ +/* + * 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; +} |