ifc_utils.c revision 9092b91ccaa4c6069036f72163e6473a5ca408c4
1dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 2dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Copyright 2008, The Android Open Source Project 3dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * 4dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); 5dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * you may not use this file except in compliance with the License. 6dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * You may obtain a copy of the License at 7dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * 8dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 9dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * 10dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 11dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 12dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * See the License for the specific language governing permissions and 14dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * limitations under the License. 15dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 16dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 17dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <stdio.h> 18dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <stdlib.h> 19dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <unistd.h> 20dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <string.h> 21dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <errno.h> 22dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 23dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <sys/socket.h> 24dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <sys/select.h> 25dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <sys/types.h> 26dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <netinet/in.h> 27dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <arpa/inet.h> 287d05a80da8c210d11df657bcec8b19a6bf1e8a16Dmitry Shmidt#include <net/if.h> 29dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 30dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <linux/if.h> 31c88e09cb98fb3690c3cf49f5a825532e0d9bf300Szymon Jakubczak#include <linux/if_ether.h> 32c88e09cb98fb3690c3cf49f5a825532e0d9bf300Szymon Jakubczak#include <linux/if_arp.h> 33dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <linux/sockios.h> 34dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <linux/route.h> 358984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik#include <linux/ipv6_route.h> 368984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik#include <netdb.h> 37dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <linux/wireless.h> 38dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 39dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#ifdef ANDROID 40dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define LOG_TAG "NetUtils" 41dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <cutils/log.h> 42dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <cutils/properties.h> 43dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#else 44dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <stdio.h> 45dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <string.h> 46dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define LOGD printf 47dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#define LOGW printf 48dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#endif 49dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 50dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic int ifc_ctl_sock = -1; 518984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naikstatic int ifc_ctl_sock6 = -1; 52dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid printerr(char *fmt, ...); 53dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 54c88e09cb98fb3690c3cf49f5a825532e0d9bf300Szymon Jakubczakstatic const char *ipaddr_to_string(in_addr_t addr) 55dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 56dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct in_addr in_addr; 57dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 58dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project in_addr.s_addr = addr; 59dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return inet_ntoa(in_addr); 60dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 61dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 62dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint ifc_init(void) 63dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 64dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (ifc_ctl_sock == -1) { 65dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_ctl_sock = socket(AF_INET, SOCK_DGRAM, 0); 66dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (ifc_ctl_sock < 0) { 67dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project printerr("socket() failed: %s\n", strerror(errno)); 68dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 69dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 70dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return ifc_ctl_sock < 0 ? -1 : 0; 71dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 72dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 738984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naikint ifc_init6(void) 748984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik{ 758984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (ifc_ctl_sock6 == -1) { 768984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik ifc_ctl_sock6 = socket(AF_INET6, SOCK_DGRAM, 0); 778984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (ifc_ctl_sock6 < 0) { 788984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik printerr("socket() failed: %s\n", strerror(errno)); 798984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 808984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 818984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik return ifc_ctl_sock6 < 0 ? -1 : 0; 828984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik} 838984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 84dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid ifc_close(void) 85dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 86dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (ifc_ctl_sock != -1) { 87dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project (void)close(ifc_ctl_sock); 88dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_ctl_sock = -1; 89dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 90dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 91dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 928984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naikvoid ifc_close6(void) 938984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik{ 948984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (ifc_ctl_sock6 != -1) { 958984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik (void)close(ifc_ctl_sock6); 968984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik ifc_ctl_sock6 = -1; 978984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 988984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik} 998984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 100dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic void ifc_init_ifr(const char *name, struct ifreq *ifr) 101dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 102dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project memset(ifr, 0, sizeof(struct ifreq)); 103dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project strncpy(ifr->ifr_name, name, IFNAMSIZ); 104dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifr->ifr_name[IFNAMSIZ - 1] = 0; 105dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 106dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 107dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint ifc_get_hwaddr(const char *name, void *ptr) 108dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 109dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int r; 110dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct ifreq ifr; 111dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_init_ifr(name, &ifr); 112dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 113dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project r = ioctl(ifc_ctl_sock, SIOCGIFHWADDR, &ifr); 114dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(r < 0) return -1; 115dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 116c88e09cb98fb3690c3cf49f5a825532e0d9bf300Szymon Jakubczak memcpy(ptr, &ifr.ifr_hwaddr.sa_data, ETH_ALEN); 117dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 118dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 119dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 120dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint ifc_get_ifindex(const char *name, int *if_indexp) 121dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 122dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int r; 123dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct ifreq ifr; 124dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_init_ifr(name, &ifr); 125dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 126dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project r = ioctl(ifc_ctl_sock, SIOCGIFINDEX, &ifr); 127dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(r < 0) return -1; 128dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 129dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project *if_indexp = ifr.ifr_ifindex; 1307d05a80da8c210d11df657bcec8b19a6bf1e8a16Dmitry Shmidt return 0; 131dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 132dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 133dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic int ifc_set_flags(const char *name, unsigned set, unsigned clr) 134dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 135dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct ifreq ifr; 136dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_init_ifr(name, &ifr); 137dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 138dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(ioctl(ifc_ctl_sock, SIOCGIFFLAGS, &ifr) < 0) return -1; 139dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifr.ifr_flags = (ifr.ifr_flags & (~clr)) | set; 140dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return ioctl(ifc_ctl_sock, SIOCSIFFLAGS, &ifr); 141dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 142dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 143dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint ifc_up(const char *name) 144dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 145dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return ifc_set_flags(name, IFF_UP, 0); 146dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 147dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 148dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint ifc_down(const char *name) 149dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 150dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return ifc_set_flags(name, 0, IFF_UP); 151dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 152dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 153dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic void init_sockaddr_in(struct sockaddr *sa, in_addr_t addr) 154dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 155dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct sockaddr_in *sin = (struct sockaddr_in *) sa; 156dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sin->sin_family = AF_INET; 157dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sin->sin_port = 0; 158dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sin->sin_addr.s_addr = addr; 159dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 160dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 161dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint ifc_set_addr(const char *name, in_addr_t addr) 162dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 163dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct ifreq ifr; 164dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 165dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_init_ifr(name, &ifr); 166dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project init_sockaddr_in(&ifr.ifr_addr, addr); 1677d05a80da8c210d11df657bcec8b19a6bf1e8a16Dmitry Shmidt 168dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return ioctl(ifc_ctl_sock, SIOCSIFADDR, &ifr); 169dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 170dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 171c88e09cb98fb3690c3cf49f5a825532e0d9bf300Szymon Jakubczakint ifc_set_hwaddr(const char *name, const void *ptr) 172c88e09cb98fb3690c3cf49f5a825532e0d9bf300Szymon Jakubczak{ 173c88e09cb98fb3690c3cf49f5a825532e0d9bf300Szymon Jakubczak int r; 174c88e09cb98fb3690c3cf49f5a825532e0d9bf300Szymon Jakubczak struct ifreq ifr; 175c88e09cb98fb3690c3cf49f5a825532e0d9bf300Szymon Jakubczak ifc_init_ifr(name, &ifr); 176c88e09cb98fb3690c3cf49f5a825532e0d9bf300Szymon Jakubczak 177c88e09cb98fb3690c3cf49f5a825532e0d9bf300Szymon Jakubczak ifr.ifr_hwaddr.sa_family = ARPHRD_ETHER; 178c88e09cb98fb3690c3cf49f5a825532e0d9bf300Szymon Jakubczak memcpy(&ifr.ifr_hwaddr.sa_data, ptr, ETH_ALEN); 179c88e09cb98fb3690c3cf49f5a825532e0d9bf300Szymon Jakubczak return ioctl(ifc_ctl_sock, SIOCSIFHWADDR, &ifr); 180c88e09cb98fb3690c3cf49f5a825532e0d9bf300Szymon Jakubczak} 181c88e09cb98fb3690c3cf49f5a825532e0d9bf300Szymon Jakubczak 182dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint ifc_set_mask(const char *name, in_addr_t mask) 183dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 184dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct ifreq ifr; 185dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 186dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_init_ifr(name, &ifr); 187dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project init_sockaddr_in(&ifr.ifr_addr, mask); 1887d05a80da8c210d11df657bcec8b19a6bf1e8a16Dmitry Shmidt 189dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return ioctl(ifc_ctl_sock, SIOCSIFNETMASK, &ifr); 190dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 191dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 1929092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidtint ifc_get_addr(const char *name, in_addr_t *addr) 1939092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt{ 1949092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt struct ifreq ifr; 1959092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt int ret = 0; 1969092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt 1979092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt ifc_init_ifr(name, &ifr); 1989092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt if (addr != NULL) { 1999092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt ret = ioctl(ifc_ctl_sock, SIOCGIFADDR, &ifr); 2009092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt if (ret < 0) { 2019092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt *addr = 0; 2029092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt } else { 2039092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt *addr = ((struct sockaddr_in*) &ifr.ifr_addr)->sin_addr.s_addr; 2049092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt } 2059092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt } 2069092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt return ret; 2079092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt} 2089092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt 209dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint ifc_get_info(const char *name, in_addr_t *addr, in_addr_t *mask, unsigned *flags) 210dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 211dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct ifreq ifr; 212dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_init_ifr(name, &ifr); 213dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 214dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (addr != NULL) { 215dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(ioctl(ifc_ctl_sock, SIOCGIFADDR, &ifr) < 0) { 216dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project *addr = 0; 217dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 218dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project *addr = ((struct sockaddr_in*) &ifr.ifr_addr)->sin_addr.s_addr; 219dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 220dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 2217d05a80da8c210d11df657bcec8b19a6bf1e8a16Dmitry Shmidt 222dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (mask != NULL) { 223dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(ioctl(ifc_ctl_sock, SIOCGIFNETMASK, &ifr) < 0) { 224dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project *mask = 0; 225dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 226dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project *mask = ((struct sockaddr_in*) &ifr.ifr_addr)->sin_addr.s_addr; 227dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 228dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 229dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 230dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (flags != NULL) { 231dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(ioctl(ifc_ctl_sock, SIOCGIFFLAGS, &ifr) < 0) { 232dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project *flags = 0; 233dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 234dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project *flags = ifr.ifr_flags; 235dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 236dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 237dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 238dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 239dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 240dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 2418984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naikin_addr_t get_ipv4_netmask(int prefix_length) 242dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 2438984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik in_addr_t mask = 0; 244dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 24536f93f01201bbff4a411c73adfbaf08bd93b1ad2Stan Chesnutt // C99 (6.5.7): shifts of 32 bits have undefined results 24636f93f01201bbff4a411c73adfbaf08bd93b1ad2Stan Chesnutt if (prefix_length == 0) { 24736f93f01201bbff4a411c73adfbaf08bd93b1ad2Stan Chesnutt return 0; 24836f93f01201bbff4a411c73adfbaf08bd93b1ad2Stan Chesnutt } 24936f93f01201bbff4a411c73adfbaf08bd93b1ad2Stan Chesnutt 2508984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik mask = ~mask << (32 - prefix_length); 2518984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik mask = htonl(mask); 2528984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 2538984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik return mask; 254dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 255dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 2568984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naikint ifc_add_ipv4_route(const char *ifname, struct in_addr dst, int prefix_length, 2578984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik struct in_addr gw) 258dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 259dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct rtentry rt; 260dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int result; 2618984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik in_addr_t netmask; 262dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 263dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project memset(&rt, 0, sizeof(rt)); 2648984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 265dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project rt.rt_dst.sa_family = AF_INET; 2668984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik rt.rt_dev = (void*) ifname; 2678984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 2688984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik netmask = get_ipv4_netmask(prefix_length); 2698984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik init_sockaddr_in(&rt.rt_genmask, netmask); 2708984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik init_sockaddr_in(&rt.rt_dst, dst.s_addr); 2718984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik rt.rt_flags = RTF_UP; 2728984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 2738984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (prefix_length == 32) { 2748984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik rt.rt_flags |= RTF_HOST; 2758984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 2768984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 2778984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (gw.s_addr != 0) { 2788984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik rt.rt_flags |= RTF_GATEWAY; 2798984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik init_sockaddr_in(&rt.rt_gateway, gw.s_addr); 2808984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 2818984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 282dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_init(); 2838984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 2848984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (ifc_ctl_sock < 0) { 2858984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik return -errno; 2868984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 2878984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 288dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project result = ioctl(ifc_ctl_sock, SIOCADDRT, &rt); 2898984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (result < 0) { 2908984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (errno == EEXIST) { 2918984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik result = 0; 2928984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } else { 2938984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik result = -errno; 2948984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 295dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 296dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_close(); 297dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return result; 298dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 299dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 3008984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naikint ifc_create_default_route(const char *name, in_addr_t gw) 3018984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik{ 3028984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik struct in_addr in_dst, in_gw; 3038984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 3048984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik in_dst.s_addr = 0; 3058984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik in_gw.s_addr = gw; 3068984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 3078984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik return ifc_add_ipv4_route(name, in_dst, 0, in_gw); 3088984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik} 3098984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 3108984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naikint ifc_add_host_route(const char *name, in_addr_t dst) 3118984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik{ 3128984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik struct in_addr in_dst, in_gw; 3138984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 3148984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik in_dst.s_addr = dst; 3158984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik in_gw.s_addr = 0; 3168984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 3178984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik return ifc_add_ipv4_route(name, in_dst, 32, in_gw); 3188984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik} 3198984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 320feb63e9e6f2d7aed5f0f21347992218ed8acb9f4Mike Lockwoodint ifc_enable(const char *ifname) 321feb63e9e6f2d7aed5f0f21347992218ed8acb9f4Mike Lockwood{ 322feb63e9e6f2d7aed5f0f21347992218ed8acb9f4Mike Lockwood int result; 323feb63e9e6f2d7aed5f0f21347992218ed8acb9f4Mike Lockwood 324feb63e9e6f2d7aed5f0f21347992218ed8acb9f4Mike Lockwood ifc_init(); 325feb63e9e6f2d7aed5f0f21347992218ed8acb9f4Mike Lockwood result = ifc_up(ifname); 326feb63e9e6f2d7aed5f0f21347992218ed8acb9f4Mike Lockwood ifc_close(); 327feb63e9e6f2d7aed5f0f21347992218ed8acb9f4Mike Lockwood return result; 328feb63e9e6f2d7aed5f0f21347992218ed8acb9f4Mike Lockwood} 329feb63e9e6f2d7aed5f0f21347992218ed8acb9f4Mike Lockwood 330dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint ifc_disable(const char *ifname) 331dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 3329092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt unsigned addr, count; 333dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int result; 334dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 335dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_init(); 336dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project result = ifc_down(ifname); 3379092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt 338dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_set_addr(ifname, 0); 3399092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt for (count=0, addr=1;((addr != 0) && (count < 255)); count++) { 3409092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt if (ifc_get_addr(ifname, &addr) < 0) 3419092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt break; 3429092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt if (addr) 3439092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt ifc_set_addr(ifname, 0); 3449092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt } 3459092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt 346dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_close(); 347dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return result; 348dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 349dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 350dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint ifc_reset_connections(const char *ifname) 351dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 352dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#ifdef HAVE_ANDROID_OS 353dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int result; 354dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project in_addr_t myaddr; 355dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct ifreq ifr; 356dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 357dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_init(); 358dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_get_info(ifname, &myaddr, NULL, NULL); 359dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_init_ifr(ifname, &ifr); 360dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project init_sockaddr_in(&ifr.ifr_addr, myaddr); 361dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project result = ioctl(ifc_ctl_sock, SIOCKILLADDR, &ifr); 362dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_close(); 3637d05a80da8c210d11df657bcec8b19a6bf1e8a16Dmitry Shmidt 364dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return result; 365dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#else 366dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 367dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#endif 368dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 369dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 370dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 371dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Remove the routes associated with the named interface. 372dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 373dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint ifc_remove_host_routes(const char *name) 374dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 375dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char ifname[64]; 376dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project in_addr_t dest, gway, mask; 377dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int flags, refcnt, use, metric, mtu, win, irtt; 378dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct rtentry rt; 379dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project FILE *fp; 380dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct in_addr addr; 381dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 382dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fp = fopen("/proc/net/route", "r"); 383dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (fp == NULL) 384dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 385dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Skip the header line */ 386dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (fscanf(fp, "%*[^\n]\n") < 0) { 387dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fclose(fp); 388dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 389dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 390dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_init(); 391dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project for (;;) { 392dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int nread = fscanf(fp, "%63s%X%X%X%d%d%d%X%d%d%d\n", 393dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifname, &dest, &gway, &flags, &refcnt, &use, &metric, &mask, 394dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project &mtu, &win, &irtt); 395dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (nread != 11) { 396dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project break; 397dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 398dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if ((flags & (RTF_UP|RTF_HOST)) != (RTF_UP|RTF_HOST) 399dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project || strcmp(ifname, name) != 0) { 400dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project continue; 401dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 402dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project memset(&rt, 0, sizeof(rt)); 403dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project rt.rt_dev = (void *)name; 404dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project init_sockaddr_in(&rt.rt_dst, dest); 405dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project init_sockaddr_in(&rt.rt_gateway, gway); 406dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project init_sockaddr_in(&rt.rt_genmask, mask); 407dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project addr.s_addr = dest; 408dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (ioctl(ifc_ctl_sock, SIOCDELRT, &rt) < 0) { 409dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LOGD("failed to remove route for %s to %s: %s", 410dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifname, inet_ntoa(addr), strerror(errno)); 411dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 412dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 413dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fclose(fp); 414dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_close(); 415dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 416dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 417dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 418dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 419dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Return the address of the default gateway 420dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * 421dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * TODO: factor out common code from this and remove_host_routes() 422dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * so that we only scan /proc/net/route in one place. 423dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 424dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint ifc_get_default_route(const char *ifname) 425dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 426dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char name[64]; 427dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project in_addr_t dest, gway, mask; 428dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int flags, refcnt, use, metric, mtu, win, irtt; 429dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int result; 430dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project FILE *fp; 431dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 432dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fp = fopen("/proc/net/route", "r"); 433dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (fp == NULL) 434dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 435dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Skip the header line */ 436dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (fscanf(fp, "%*[^\n]\n") < 0) { 437dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fclose(fp); 438dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 439dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 440dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_init(); 441dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project result = 0; 442dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project for (;;) { 443dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int nread = fscanf(fp, "%63s%X%X%X%d%d%d%X%d%d%d\n", 444dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project name, &dest, &gway, &flags, &refcnt, &use, &metric, &mask, 445dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project &mtu, &win, &irtt); 446dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (nread != 11) { 447dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project break; 448dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 449dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if ((flags & (RTF_UP|RTF_GATEWAY)) == (RTF_UP|RTF_GATEWAY) 450dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project && dest == 0 451dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project && strcmp(ifname, name) == 0) { 452dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project result = gway; 453dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project break; 454dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 455dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 456dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fclose(fp); 457dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_close(); 458dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return result; 459dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 460dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 461dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 462dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Sets the specified gateway as the default route for the named interface. 463dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 464dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint ifc_set_default_route(const char *ifname, in_addr_t gateway) 465dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 466dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct in_addr addr; 467dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int result; 468dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 469dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_init(); 470dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project addr.s_addr = gateway; 471dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if ((result = ifc_create_default_route(ifname, gateway)) < 0) { 472dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LOGD("failed to add %s as default route for %s: %s", 473dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project inet_ntoa(addr), ifname, strerror(errno)); 474dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 475dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_close(); 476dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return result; 477dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 478dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 479dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 480dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Removes the default route for the named interface. 481dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 482dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint ifc_remove_default_route(const char *ifname) 483dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 484dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct rtentry rt; 485dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int result; 486dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 487dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_init(); 488dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project memset(&rt, 0, sizeof(rt)); 489dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project rt.rt_dev = (void *)ifname; 490dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project rt.rt_flags = RTF_UP|RTF_GATEWAY; 491dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project init_sockaddr_in(&rt.rt_dst, 0); 492dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if ((result = ioctl(ifc_ctl_sock, SIOCDELRT, &rt)) < 0) { 493dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LOGD("failed to remove default route for %s: %s", ifname, strerror(errno)); 494dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 495dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_close(); 496dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return result; 497dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 498dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 499dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint 500dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectifc_configure(const char *ifname, 501dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project in_addr_t address, 502dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project in_addr_t netmask, 503dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project in_addr_t gateway, 504dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project in_addr_t dns1, 505dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project in_addr_t dns2) { 506dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 507dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char dns_prop_name[PROPERTY_KEY_MAX]; 508dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 509dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_init(); 510dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 511dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (ifc_up(ifname)) { 512dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project printerr("failed to turn on interface %s: %s\n", ifname, strerror(errno)); 513dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_close(); 514dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 515dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 516dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (ifc_set_addr(ifname, address)) { 517dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project printerr("failed to set ipaddr %s: %s\n", ipaddr_to_string(address), strerror(errno)); 518dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_close(); 519dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 520dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 521dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (ifc_set_mask(ifname, netmask)) { 522dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project printerr("failed to set netmask %s: %s\n", ipaddr_to_string(netmask), strerror(errno)); 523dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_close(); 524dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 525dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 526dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (ifc_create_default_route(ifname, gateway)) { 527dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project printerr("failed to set default route %s: %s\n", ipaddr_to_string(gateway), strerror(errno)); 528dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_close(); 529dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 530dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 531dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 532dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_close(); 533dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 534c88e09cb98fb3690c3cf49f5a825532e0d9bf300Szymon Jakubczak snprintf(dns_prop_name, sizeof(dns_prop_name), "net.%s.dns1", ifname); 535dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project property_set(dns_prop_name, dns1 ? ipaddr_to_string(dns1) : ""); 536c88e09cb98fb3690c3cf49f5a825532e0d9bf300Szymon Jakubczak snprintf(dns_prop_name, sizeof(dns_prop_name), "net.%s.dns2", ifname); 537dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project property_set(dns_prop_name, dns2 ? ipaddr_to_string(dns2) : ""); 538dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 539dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 540dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 5418984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 5428984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naikint ifc_add_ipv6_route(const char *ifname, struct in6_addr dst, int prefix_length, 5438984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik struct in6_addr gw) 5448984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik{ 5458984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik struct in6_rtmsg rtmsg; 5468984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik int result; 5478984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik int ifindex; 5488984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 5498984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik memset(&rtmsg, 0, sizeof(rtmsg)); 5508984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 5518984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik ifindex = if_nametoindex(ifname); 5528984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (ifindex == 0) { 5538984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik printerr("if_nametoindex() failed: interface %s\n", ifname); 5548984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik return -ENXIO; 5558984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 5568984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 5578984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik rtmsg.rtmsg_ifindex = ifindex; 5588984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik rtmsg.rtmsg_dst = dst; 5598984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik rtmsg.rtmsg_dst_len = prefix_length; 5608984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik rtmsg.rtmsg_flags = RTF_UP; 5618984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 5628984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (prefix_length == 128) { 5638984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik rtmsg.rtmsg_flags |= RTF_HOST; 5648984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 5658984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 5668984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (memcmp(&gw, &in6addr_any, sizeof(in6addr_any))) { 5678984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik rtmsg.rtmsg_flags |= RTF_GATEWAY; 5688984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik rtmsg.rtmsg_gateway = gw; 5698984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 5708984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 5718984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik ifc_init6(); 5728984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 5738984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (ifc_ctl_sock6 < 0) { 5748984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik return -errno; 5758984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 5768984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 5778984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik result = ioctl(ifc_ctl_sock6, SIOCADDRT, &rtmsg); 5788984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (result < 0) { 5798984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (errno == EEXIST) { 5808984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik result = 0; 5818984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } else { 5828984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik result = -errno; 5838984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 5848984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 5858984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik ifc_close6(); 5868984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik return result; 5878984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik} 5888984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 5898984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naikint ifc_add_route(const char *ifname, const char *dst, int prefix_length, 5908984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik const char *gw) 5918984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik{ 5928984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik int ret = 0; 5938984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik struct sockaddr_in ipv4_dst, ipv4_gw; 5948984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik struct sockaddr_in6 ipv6_dst, ipv6_gw; 5958984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik struct addrinfo hints, *addr_ai, *gw_ai; 5968984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 5978984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik memset(&hints, 0, sizeof(hints)); 5988984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik hints.ai_family = AF_UNSPEC; /* Allow IPv4 or IPv6 */ 5998984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik hints.ai_flags = AI_NUMERICHOST; 6008984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 6018984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik ret = getaddrinfo(dst, NULL, &hints, &addr_ai); 6028984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 6038984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (ret != 0) { 6048984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik printerr("getaddrinfo failed: invalid address %s\n", dst); 6058984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik return -EINVAL; 6068984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 6078984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 6088984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (gw == NULL) { 6098984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (addr_ai->ai_family == AF_INET6) { 6108984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik gw = "::"; 6118984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } else if (addr_ai->ai_family == AF_INET) { 6128984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik gw = "0.0.0.0"; 6138984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 6148984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 6158984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 6168984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik ret = getaddrinfo(gw, NULL, &hints, &gw_ai); 6178984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (ret != 0) { 6188984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik printerr("getaddrinfo failed: invalid gateway %s\n", gw); 6198984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik freeaddrinfo(addr_ai); 6208984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik return -EINVAL; 6218984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 6228984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 6238984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (addr_ai->ai_family != gw_ai->ai_family) { 6248984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik printerr("ifc_add_route: different address families: %s and %s\n", dst, gw); 6258984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik freeaddrinfo(addr_ai); 6268984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik freeaddrinfo(gw_ai); 6278984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik return -EINVAL; 6288984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 6298984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 6308984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (addr_ai->ai_family == AF_INET6) { 6318984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik memcpy(&ipv6_dst, addr_ai->ai_addr, sizeof(struct sockaddr_in6)); 6328984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik memcpy(&ipv6_gw, gw_ai->ai_addr, sizeof(struct sockaddr_in6)); 6338984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik ret = ifc_add_ipv6_route(ifname, ipv6_dst.sin6_addr, prefix_length, 6348984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik ipv6_gw.sin6_addr); 6358984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } else if (addr_ai->ai_family == AF_INET) { 6368984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik memcpy(&ipv4_dst, addr_ai->ai_addr, sizeof(struct sockaddr_in)); 6378984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik memcpy(&ipv4_gw, gw_ai->ai_addr, sizeof(struct sockaddr_in)); 6388984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik ret = ifc_add_ipv4_route(ifname, ipv4_dst.sin_addr, prefix_length, 6398984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik ipv4_gw.sin_addr); 6408984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } else { 6418984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik printerr("ifc_add_route: getaddrinfo returned un supported address family %d\n", 6428984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik addr_ai->ai_family); 6438984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik ret = -EAFNOSUPPORT; 6448984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 6458984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 6468984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik freeaddrinfo(addr_ai); 6478984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik freeaddrinfo(gw_ai); 6488984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik return ret; 6498984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik} 650