ifc_utils.c revision 021d0a2e7cd7c65036d425b7bef775bbc1733864
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 5409dd819d2794caf1a17cd03592c100755fb25577Robert Greenwaltin_addr_t prefixLengthToIpv4Netmask(int prefix_length) 5509dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt{ 5609dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt in_addr_t mask = 0; 5709dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt 5809dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt // C99 (6.5.7): shifts of 32 bits have undefined results 5909dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt if (prefix_length <= 0 || prefix_length > 32) { 6009dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt return 0; 6109dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt } 6209dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt 6309dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt mask = ~mask << (32 - prefix_length); 6409dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt mask = htonl(mask); 6509dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt 6609dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt return mask; 6709dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt} 6809dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt 6909dd819d2794caf1a17cd03592c100755fb25577Robert Greenwaltint ipv4NetmaskToPrefixLength(in_addr_t mask) 7009dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt{ 7109dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt mask = ntohl(mask); 7209dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt int prefixLength = 0; 7309dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt uint32_t m = (uint32_t)mask; 7409dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt while (m & 0x80000000) { 7509dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt prefixLength++; 7609dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt m = m << 1; 7709dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt } 7809dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt return prefixLength; 7909dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt} 8009dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt 81c88e09cb98fb3690c3cf49f5a825532e0d9bf300Szymon Jakubczakstatic const char *ipaddr_to_string(in_addr_t addr) 82dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 83dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct in_addr in_addr; 84dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 85dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project in_addr.s_addr = addr; 86dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return inet_ntoa(in_addr); 87dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 88dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 89dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint ifc_init(void) 90dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 91dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (ifc_ctl_sock == -1) { 92dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_ctl_sock = socket(AF_INET, SOCK_DGRAM, 0); 93dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (ifc_ctl_sock < 0) { 94dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project printerr("socket() failed: %s\n", strerror(errno)); 95dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 96dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 97dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return ifc_ctl_sock < 0 ? -1 : 0; 98dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 99dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 1008984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naikint ifc_init6(void) 1018984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik{ 1028984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (ifc_ctl_sock6 == -1) { 1038984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik ifc_ctl_sock6 = socket(AF_INET6, SOCK_DGRAM, 0); 1048984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (ifc_ctl_sock6 < 0) { 1058984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik printerr("socket() failed: %s\n", strerror(errno)); 1068984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 1078984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 1088984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik return ifc_ctl_sock6 < 0 ? -1 : 0; 1098984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik} 1108984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 111dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid ifc_close(void) 112dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 113dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (ifc_ctl_sock != -1) { 114dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project (void)close(ifc_ctl_sock); 115dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_ctl_sock = -1; 116dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 117dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 118dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 1198984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naikvoid ifc_close6(void) 1208984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik{ 1218984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (ifc_ctl_sock6 != -1) { 1228984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik (void)close(ifc_ctl_sock6); 1238984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik ifc_ctl_sock6 = -1; 1248984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 1258984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik} 1268984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 127dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic void ifc_init_ifr(const char *name, struct ifreq *ifr) 128dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 129dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project memset(ifr, 0, sizeof(struct ifreq)); 130dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project strncpy(ifr->ifr_name, name, IFNAMSIZ); 131dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifr->ifr_name[IFNAMSIZ - 1] = 0; 132dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 133dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 134dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint ifc_get_hwaddr(const char *name, void *ptr) 135dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 136dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int r; 137dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct ifreq ifr; 138dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_init_ifr(name, &ifr); 139dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 140dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project r = ioctl(ifc_ctl_sock, SIOCGIFHWADDR, &ifr); 141dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(r < 0) return -1; 142dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 143c88e09cb98fb3690c3cf49f5a825532e0d9bf300Szymon Jakubczak memcpy(ptr, &ifr.ifr_hwaddr.sa_data, ETH_ALEN); 144dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 145dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 146dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 147dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint ifc_get_ifindex(const char *name, int *if_indexp) 148dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 149dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int r; 150dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct ifreq ifr; 151dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_init_ifr(name, &ifr); 152dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 153dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project r = ioctl(ifc_ctl_sock, SIOCGIFINDEX, &ifr); 154dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(r < 0) return -1; 155dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 156dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project *if_indexp = ifr.ifr_ifindex; 1577d05a80da8c210d11df657bcec8b19a6bf1e8a16Dmitry Shmidt return 0; 158dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 159dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 160dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic int ifc_set_flags(const char *name, unsigned set, unsigned clr) 161dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 162dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct ifreq ifr; 163dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_init_ifr(name, &ifr); 164dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 165dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(ioctl(ifc_ctl_sock, SIOCGIFFLAGS, &ifr) < 0) return -1; 166dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifr.ifr_flags = (ifr.ifr_flags & (~clr)) | set; 167dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return ioctl(ifc_ctl_sock, SIOCSIFFLAGS, &ifr); 168dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 169dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 170dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint ifc_up(const char *name) 171dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 172dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return ifc_set_flags(name, IFF_UP, 0); 173dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 174dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 175dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint ifc_down(const char *name) 176dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 177dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return ifc_set_flags(name, 0, IFF_UP); 178dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 179dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 180dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic void init_sockaddr_in(struct sockaddr *sa, in_addr_t addr) 181dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 182dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct sockaddr_in *sin = (struct sockaddr_in *) sa; 183dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sin->sin_family = AF_INET; 184dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sin->sin_port = 0; 185dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sin->sin_addr.s_addr = addr; 186dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 187dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 188dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint ifc_set_addr(const char *name, in_addr_t addr) 189dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 190dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct ifreq ifr; 191dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 192dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_init_ifr(name, &ifr); 193dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project init_sockaddr_in(&ifr.ifr_addr, addr); 1947d05a80da8c210d11df657bcec8b19a6bf1e8a16Dmitry Shmidt 195dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return ioctl(ifc_ctl_sock, SIOCSIFADDR, &ifr); 196dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 197dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 198c88e09cb98fb3690c3cf49f5a825532e0d9bf300Szymon Jakubczakint ifc_set_hwaddr(const char *name, const void *ptr) 199c88e09cb98fb3690c3cf49f5a825532e0d9bf300Szymon Jakubczak{ 200c88e09cb98fb3690c3cf49f5a825532e0d9bf300Szymon Jakubczak int r; 201c88e09cb98fb3690c3cf49f5a825532e0d9bf300Szymon Jakubczak struct ifreq ifr; 202c88e09cb98fb3690c3cf49f5a825532e0d9bf300Szymon Jakubczak ifc_init_ifr(name, &ifr); 203c88e09cb98fb3690c3cf49f5a825532e0d9bf300Szymon Jakubczak 204c88e09cb98fb3690c3cf49f5a825532e0d9bf300Szymon Jakubczak ifr.ifr_hwaddr.sa_family = ARPHRD_ETHER; 205c88e09cb98fb3690c3cf49f5a825532e0d9bf300Szymon Jakubczak memcpy(&ifr.ifr_hwaddr.sa_data, ptr, ETH_ALEN); 206c88e09cb98fb3690c3cf49f5a825532e0d9bf300Szymon Jakubczak return ioctl(ifc_ctl_sock, SIOCSIFHWADDR, &ifr); 207c88e09cb98fb3690c3cf49f5a825532e0d9bf300Szymon Jakubczak} 208c88e09cb98fb3690c3cf49f5a825532e0d9bf300Szymon Jakubczak 20909dd819d2794caf1a17cd03592c100755fb25577Robert Greenwaltint ifc_set_prefixLength(const char *name, int prefixLength) 210dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 211dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct ifreq ifr; 21209dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt // TODO - support ipv6 21309dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt if (prefixLength > 32 || prefixLength < 0) return -1; 214dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 21509dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt in_addr_t mask = prefixLengthToIpv4Netmask(prefixLength); 216dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_init_ifr(name, &ifr); 217dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project init_sockaddr_in(&ifr.ifr_addr, mask); 2187d05a80da8c210d11df657bcec8b19a6bf1e8a16Dmitry Shmidt 219dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return ioctl(ifc_ctl_sock, SIOCSIFNETMASK, &ifr); 220dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 221dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 2229092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidtint ifc_get_addr(const char *name, in_addr_t *addr) 2239092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt{ 2249092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt struct ifreq ifr; 2259092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt int ret = 0; 2269092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt 2279092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt ifc_init_ifr(name, &ifr); 2289092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt if (addr != NULL) { 2299092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt ret = ioctl(ifc_ctl_sock, SIOCGIFADDR, &ifr); 2309092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt if (ret < 0) { 2319092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt *addr = 0; 2329092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt } else { 2339092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt *addr = ((struct sockaddr_in*) &ifr.ifr_addr)->sin_addr.s_addr; 2349092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt } 2359092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt } 2369092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt return ret; 2379092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt} 2389092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt 23909dd819d2794caf1a17cd03592c100755fb25577Robert Greenwaltint ifc_get_info(const char *name, in_addr_t *addr, int *prefixLength, unsigned *flags) 240dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 241dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct ifreq ifr; 242dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_init_ifr(name, &ifr); 243dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 244dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (addr != NULL) { 245dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(ioctl(ifc_ctl_sock, SIOCGIFADDR, &ifr) < 0) { 246dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project *addr = 0; 247dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 248dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project *addr = ((struct sockaddr_in*) &ifr.ifr_addr)->sin_addr.s_addr; 249dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 250dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 2517d05a80da8c210d11df657bcec8b19a6bf1e8a16Dmitry Shmidt 25209dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt if (prefixLength != NULL) { 253dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(ioctl(ifc_ctl_sock, SIOCGIFNETMASK, &ifr) < 0) { 25409dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt *prefixLength = 0; 255dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 25609dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt *prefixLength = ipv4NetmaskToPrefixLength((int) 25709dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt ((struct sockaddr_in*) &ifr.ifr_addr)->sin_addr.s_addr); 258dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 259dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 260dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 261dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (flags != NULL) { 262dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(ioctl(ifc_ctl_sock, SIOCGIFFLAGS, &ifr) < 0) { 263dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project *flags = 0; 264dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 265dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project *flags = ifr.ifr_flags; 266dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 267dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 268dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 269dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 270dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 271dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 272021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwaltint ifc_act_on_ipv4_route(int action, const char *ifname, struct in_addr dst, int prefix_length, 2738984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik struct in_addr gw) 274dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 275dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct rtentry rt; 276dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int result; 2778984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik in_addr_t netmask; 278dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 279dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project memset(&rt, 0, sizeof(rt)); 2808984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 281dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project rt.rt_dst.sa_family = AF_INET; 2828984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik rt.rt_dev = (void*) ifname; 2838984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 28409dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt netmask = prefixLengthToIpv4Netmask(prefix_length); 2858984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik init_sockaddr_in(&rt.rt_genmask, netmask); 2868984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik init_sockaddr_in(&rt.rt_dst, dst.s_addr); 2878984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik rt.rt_flags = RTF_UP; 2888984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 2898984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (prefix_length == 32) { 2908984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik rt.rt_flags |= RTF_HOST; 2918984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 2928984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 2938984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (gw.s_addr != 0) { 2948984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik rt.rt_flags |= RTF_GATEWAY; 2958984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik init_sockaddr_in(&rt.rt_gateway, gw.s_addr); 2968984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 2978984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 298dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_init(); 2998984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 3008984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (ifc_ctl_sock < 0) { 3018984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik return -errno; 3028984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 3038984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 304021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwalt result = ioctl(ifc_ctl_sock, action, &rt); 3058984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (result < 0) { 3068984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (errno == EEXIST) { 3078984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik result = 0; 3088984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } else { 3098984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik result = -errno; 3108984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 311dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 312dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_close(); 313dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return result; 314dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 315dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 3168984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naikint ifc_create_default_route(const char *name, in_addr_t gw) 3178984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik{ 3188984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik struct in_addr in_dst, in_gw; 3198984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 3208984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik in_dst.s_addr = 0; 3218984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik in_gw.s_addr = gw; 3228984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 323021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwalt return ifc_act_on_route(SIOCADDRT, name, in_dst, 0, in_gw); 3248984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik} 3258984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 326feb63e9e6f2d7aed5f0f21347992218ed8acb9f4Mike Lockwoodint ifc_enable(const char *ifname) 327feb63e9e6f2d7aed5f0f21347992218ed8acb9f4Mike Lockwood{ 328feb63e9e6f2d7aed5f0f21347992218ed8acb9f4Mike Lockwood int result; 329feb63e9e6f2d7aed5f0f21347992218ed8acb9f4Mike Lockwood 330feb63e9e6f2d7aed5f0f21347992218ed8acb9f4Mike Lockwood ifc_init(); 331feb63e9e6f2d7aed5f0f21347992218ed8acb9f4Mike Lockwood result = ifc_up(ifname); 332feb63e9e6f2d7aed5f0f21347992218ed8acb9f4Mike Lockwood ifc_close(); 333feb63e9e6f2d7aed5f0f21347992218ed8acb9f4Mike Lockwood return result; 334feb63e9e6f2d7aed5f0f21347992218ed8acb9f4Mike Lockwood} 335feb63e9e6f2d7aed5f0f21347992218ed8acb9f4Mike Lockwood 336dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint ifc_disable(const char *ifname) 337dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 3389092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt unsigned addr, count; 339dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int result; 340dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 341dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_init(); 342dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project result = ifc_down(ifname); 3439092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt 344dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_set_addr(ifname, 0); 3459092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt for (count=0, addr=1;((addr != 0) && (count < 255)); count++) { 3469092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt if (ifc_get_addr(ifname, &addr) < 0) 3479092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt break; 3489092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt if (addr) 3499092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt ifc_set_addr(ifname, 0); 3509092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt } 3519092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt 352dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_close(); 353dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return result; 354dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 355dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 356dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint ifc_reset_connections(const char *ifname) 357dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 358dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#ifdef HAVE_ANDROID_OS 3596cf73eadc752b619bc7c38d0d1277891eccbf81dLorenzo Colitti int result, success; 360dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project in_addr_t myaddr; 361dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct ifreq ifr; 3626cf73eadc752b619bc7c38d0d1277891eccbf81dLorenzo Colitti struct in6_ifreq ifr6; 363dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 3646cf73eadc752b619bc7c38d0d1277891eccbf81dLorenzo Colitti /* IPv4. Clear connections on the IP address. */ 365dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_init(); 366dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_get_info(ifname, &myaddr, NULL, NULL); 367dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_init_ifr(ifname, &ifr); 368dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project init_sockaddr_in(&ifr.ifr_addr, myaddr); 369dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project result = ioctl(ifc_ctl_sock, SIOCKILLADDR, &ifr); 370dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_close(); 3717d05a80da8c210d11df657bcec8b19a6bf1e8a16Dmitry Shmidt 3726cf73eadc752b619bc7c38d0d1277891eccbf81dLorenzo Colitti /* 3736cf73eadc752b619bc7c38d0d1277891eccbf81dLorenzo Colitti * IPv6. On Linux, when an interface goes down it loses all its IPv6 3746cf73eadc752b619bc7c38d0d1277891eccbf81dLorenzo Colitti * addresses, so we don't know which connections belonged to that interface 3756cf73eadc752b619bc7c38d0d1277891eccbf81dLorenzo Colitti * So we clear all unused IPv6 connections on the device by specifying an 3766cf73eadc752b619bc7c38d0d1277891eccbf81dLorenzo Colitti * empty IPv6 address. 3776cf73eadc752b619bc7c38d0d1277891eccbf81dLorenzo Colitti */ 3786cf73eadc752b619bc7c38d0d1277891eccbf81dLorenzo Colitti ifc_init6(); 3796cf73eadc752b619bc7c38d0d1277891eccbf81dLorenzo Colitti // This implicitly specifies an address of ::, i.e., kill all IPv6 sockets. 3806cf73eadc752b619bc7c38d0d1277891eccbf81dLorenzo Colitti memset(&ifr6, 0, sizeof(ifr6)); 3816cf73eadc752b619bc7c38d0d1277891eccbf81dLorenzo Colitti success = ioctl(ifc_ctl_sock6, SIOCKILLADDR, &ifr6); 3826cf73eadc752b619bc7c38d0d1277891eccbf81dLorenzo Colitti if (result == 0) { 3836cf73eadc752b619bc7c38d0d1277891eccbf81dLorenzo Colitti result = success; 3846cf73eadc752b619bc7c38d0d1277891eccbf81dLorenzo Colitti } 3856cf73eadc752b619bc7c38d0d1277891eccbf81dLorenzo Colitti ifc_close6(); 3866cf73eadc752b619bc7c38d0d1277891eccbf81dLorenzo Colitti 387dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return result; 388dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#else 389dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 390dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#endif 391dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 392dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 393dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 394dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Remove the routes associated with the named interface. 395dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 396dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint ifc_remove_host_routes(const char *name) 397dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 398dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char ifname[64]; 399dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project in_addr_t dest, gway, mask; 400dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int flags, refcnt, use, metric, mtu, win, irtt; 401dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct rtentry rt; 402dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project FILE *fp; 403dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct in_addr addr; 404dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 405dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fp = fopen("/proc/net/route", "r"); 406dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (fp == NULL) 407dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 408dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Skip the header line */ 409dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (fscanf(fp, "%*[^\n]\n") < 0) { 410dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fclose(fp); 411dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 412dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 413dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_init(); 414dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project for (;;) { 415dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int nread = fscanf(fp, "%63s%X%X%X%d%d%d%X%d%d%d\n", 416dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifname, &dest, &gway, &flags, &refcnt, &use, &metric, &mask, 417dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project &mtu, &win, &irtt); 418dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (nread != 11) { 419dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project break; 420dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 421dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if ((flags & (RTF_UP|RTF_HOST)) != (RTF_UP|RTF_HOST) 422dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project || strcmp(ifname, name) != 0) { 423dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project continue; 424dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 425dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project memset(&rt, 0, sizeof(rt)); 426dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project rt.rt_dev = (void *)name; 427dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project init_sockaddr_in(&rt.rt_dst, dest); 428dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project init_sockaddr_in(&rt.rt_gateway, gway); 429dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project init_sockaddr_in(&rt.rt_genmask, mask); 430dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project addr.s_addr = dest; 431dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (ioctl(ifc_ctl_sock, SIOCDELRT, &rt) < 0) { 432dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LOGD("failed to remove route for %s to %s: %s", 433dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifname, inet_ntoa(addr), strerror(errno)); 434dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 435dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 436dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fclose(fp); 437dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_close(); 438dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 439dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 440dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 441dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 442dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Removes the default route for the named interface. 443dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 444dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint ifc_remove_default_route(const char *ifname) 445dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 446dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct rtentry rt; 447dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int result; 448dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 449dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_init(); 450dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project memset(&rt, 0, sizeof(rt)); 451dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project rt.rt_dev = (void *)ifname; 452dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project rt.rt_flags = RTF_UP|RTF_GATEWAY; 453dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project init_sockaddr_in(&rt.rt_dst, 0); 454dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if ((result = ioctl(ifc_ctl_sock, SIOCDELRT, &rt)) < 0) { 455dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LOGD("failed to remove default route for %s: %s", ifname, strerror(errno)); 456dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 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 Projectint 462dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectifc_configure(const char *ifname, 463dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project in_addr_t address, 46409dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt uint32_t prefixLength, 465dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project in_addr_t gateway, 466dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project in_addr_t dns1, 467dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project in_addr_t dns2) { 468dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 469dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char dns_prop_name[PROPERTY_KEY_MAX]; 470dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 471dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_init(); 472dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 473dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (ifc_up(ifname)) { 474dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project printerr("failed to turn on interface %s: %s\n", ifname, strerror(errno)); 475dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_close(); 476dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 477dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 478dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (ifc_set_addr(ifname, address)) { 479dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project printerr("failed to set ipaddr %s: %s\n", ipaddr_to_string(address), strerror(errno)); 480dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_close(); 481dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 482dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 48309dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt if (ifc_set_prefixLength(ifname, prefixLength)) { 48409dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt printerr("failed to set prefixLength %d: %s\n", prefixLength, strerror(errno)); 485dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_close(); 486dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 487dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 488dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (ifc_create_default_route(ifname, gateway)) { 489dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project printerr("failed to set default route %s: %s\n", ipaddr_to_string(gateway), strerror(errno)); 490dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_close(); 491dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 492dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 493dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 494dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_close(); 495dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 496c88e09cb98fb3690c3cf49f5a825532e0d9bf300Szymon Jakubczak snprintf(dns_prop_name, sizeof(dns_prop_name), "net.%s.dns1", ifname); 497dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project property_set(dns_prop_name, dns1 ? ipaddr_to_string(dns1) : ""); 498c88e09cb98fb3690c3cf49f5a825532e0d9bf300Szymon Jakubczak snprintf(dns_prop_name, sizeof(dns_prop_name), "net.%s.dns2", ifname); 499dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project property_set(dns_prop_name, dns2 ? ipaddr_to_string(dns2) : ""); 500dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 501dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 502dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 5038984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 504021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwaltint ifc_act_on_ipv6_route(int action, const char *ifname, struct in6_addr dst, int prefix_length, 5058984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik struct in6_addr gw) 5068984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik{ 5078984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik struct in6_rtmsg rtmsg; 5088984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik int result; 5098984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik int ifindex; 5108984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 5118984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik memset(&rtmsg, 0, sizeof(rtmsg)); 5128984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 5138984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik ifindex = if_nametoindex(ifname); 5148984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (ifindex == 0) { 5158984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik printerr("if_nametoindex() failed: interface %s\n", ifname); 5168984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik return -ENXIO; 5178984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 5188984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 5198984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik rtmsg.rtmsg_ifindex = ifindex; 5208984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik rtmsg.rtmsg_dst = dst; 5218984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik rtmsg.rtmsg_dst_len = prefix_length; 5228984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik rtmsg.rtmsg_flags = RTF_UP; 5238984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 5248984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (prefix_length == 128) { 5258984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik rtmsg.rtmsg_flags |= RTF_HOST; 5268984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 5278984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 5288984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (memcmp(&gw, &in6addr_any, sizeof(in6addr_any))) { 5298984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik rtmsg.rtmsg_flags |= RTF_GATEWAY; 5308984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik rtmsg.rtmsg_gateway = gw; 5318984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 5328984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 5338984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik ifc_init6(); 5348984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 5358984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (ifc_ctl_sock6 < 0) { 5368984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik return -errno; 5378984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 5388984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 539021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwalt result = ioctl(ifc_ctl_sock6, action, &rtmsg); 5408984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (result < 0) { 5418984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (errno == EEXIST) { 5428984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik result = 0; 5438984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } else { 5448984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik result = -errno; 5458984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 5468984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 5478984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik ifc_close6(); 5488984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik return result; 5498984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik} 5508984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 551021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwaltint ifc_act_on_route(int action, const char *ifname, const char *dst, int prefix_length, 552021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwalt const char *gw) 5538984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik{ 5548984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik int ret = 0; 5558984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik struct sockaddr_in ipv4_dst, ipv4_gw; 5568984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik struct sockaddr_in6 ipv6_dst, ipv6_gw; 5578984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik struct addrinfo hints, *addr_ai, *gw_ai; 5588984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 5598984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik memset(&hints, 0, sizeof(hints)); 5608984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik hints.ai_family = AF_UNSPEC; /* Allow IPv4 or IPv6 */ 5618984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik hints.ai_flags = AI_NUMERICHOST; 5628984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 5638984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik ret = getaddrinfo(dst, NULL, &hints, &addr_ai); 5648984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 5658984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (ret != 0) { 5668984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik printerr("getaddrinfo failed: invalid address %s\n", dst); 5678984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik return -EINVAL; 5688984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 5698984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 570021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwalt if (gw == NULL || (strlen(gw) == 0)) { 5718984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (addr_ai->ai_family == AF_INET6) { 5728984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik gw = "::"; 5738984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } else if (addr_ai->ai_family == AF_INET) { 5748984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik gw = "0.0.0.0"; 5758984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 5768984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 5778984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 578021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwalt if (((addr_ai->ai_family == AF_INET6) && (prefix_length < 0 || prefix_length > 128)) || 579021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwalt ((addr_ai->ai_family == AF_INET) && (prefix_length < 0 || prefix_length > 32))) { 580021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwalt printerr("ifc_add_route: invalid prefix length"); 581021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwalt freeaddrinfo(addr_ai); 582021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwalt return -EINVAL; 583021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwalt } 584021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwalt 5858984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik ret = getaddrinfo(gw, NULL, &hints, &gw_ai); 5868984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (ret != 0) { 5878984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik printerr("getaddrinfo failed: invalid gateway %s\n", gw); 5888984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik freeaddrinfo(addr_ai); 5898984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik return -EINVAL; 5908984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 5918984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 5928984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (addr_ai->ai_family != gw_ai->ai_family) { 5938984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik printerr("ifc_add_route: different address families: %s and %s\n", dst, gw); 5948984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik freeaddrinfo(addr_ai); 5958984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik freeaddrinfo(gw_ai); 5968984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik return -EINVAL; 5978984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 5988984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 5998984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (addr_ai->ai_family == AF_INET6) { 6008984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik memcpy(&ipv6_dst, addr_ai->ai_addr, sizeof(struct sockaddr_in6)); 6018984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik memcpy(&ipv6_gw, gw_ai->ai_addr, sizeof(struct sockaddr_in6)); 602021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwalt ret = ifc_act_on_ipv6_route(action, ifname, ipv6_dst.sin6_addr, 603021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwalt prefix_length, ipv6_gw.sin6_addr); 6048984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } else if (addr_ai->ai_family == AF_INET) { 6058984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik memcpy(&ipv4_dst, addr_ai->ai_addr, sizeof(struct sockaddr_in)); 6068984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik memcpy(&ipv4_gw, gw_ai->ai_addr, sizeof(struct sockaddr_in)); 607021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwalt ret = ifc_act_on_ipv4_route(action, ifname, ipv4_dst.sin_addr, 608021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwalt prefix_length, ipv4_gw.sin_addr); 6098984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } else { 6108984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik printerr("ifc_add_route: getaddrinfo returned un supported address family %d\n", 6118984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik addr_ai->ai_family); 6128984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik ret = -EAFNOSUPPORT; 6138984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 6148984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 6158984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik freeaddrinfo(addr_ai); 6168984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik freeaddrinfo(gw_ai); 6178984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik return ret; 6188984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik} 619021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwalt 620021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwaltint ifc_add_route(const char *ifname, const char *dst, int prefix_length, const char *gw) 621021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwalt{ 622021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwalt return ifc_act_on_route(SIOCADDRT, ifname, dst, prefix_length, gw); 623021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwalt} 624021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwalt 625021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwaltint ifc_remove_route(const char *ifname, const char*dst, int prefix_length, const char *gw) 626021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwalt{ 627021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwalt return ifc_act_on_route(SIOCDELRT, ifname, dst, prefix_length, gw); 628021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwalt} 629