ifc_utils.c revision b6b48ae47a44cb231d0a16ca618ac28b0024c11c
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 54b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt#define DBG 0 55b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt 5609dd819d2794caf1a17cd03592c100755fb25577Robert Greenwaltin_addr_t prefixLengthToIpv4Netmask(int prefix_length) 5709dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt{ 5809dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt in_addr_t mask = 0; 5909dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt 6009dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt // C99 (6.5.7): shifts of 32 bits have undefined results 6109dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt if (prefix_length <= 0 || prefix_length > 32) { 6209dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt return 0; 6309dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt } 6409dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt 6509dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt mask = ~mask << (32 - prefix_length); 6609dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt mask = htonl(mask); 6709dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt 6809dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt return mask; 6909dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt} 7009dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt 7109dd819d2794caf1a17cd03592c100755fb25577Robert Greenwaltint ipv4NetmaskToPrefixLength(in_addr_t mask) 7209dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt{ 7309dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt mask = ntohl(mask); 7409dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt int prefixLength = 0; 7509dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt uint32_t m = (uint32_t)mask; 7609dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt while (m & 0x80000000) { 7709dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt prefixLength++; 7809dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt m = m << 1; 7909dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt } 8009dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt return prefixLength; 8109dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt} 8209dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt 83c88e09cb98fb3690c3cf49f5a825532e0d9bf300Szymon Jakubczakstatic const char *ipaddr_to_string(in_addr_t addr) 84dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 85dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct in_addr in_addr; 86dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 87dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project in_addr.s_addr = addr; 88dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return inet_ntoa(in_addr); 89dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 90dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 91dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint ifc_init(void) 92dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 93b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt int ret; 94dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (ifc_ctl_sock == -1) { 95b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt ifc_ctl_sock = socket(AF_INET, SOCK_DGRAM, 0); 96dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (ifc_ctl_sock < 0) { 97dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project printerr("socket() failed: %s\n", strerror(errno)); 98dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 99dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 100b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt 101b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt ret = ifc_ctl_sock < 0 ? -1 : 0; 102b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt if (DBG) printerr("ifc_init_returning %d", ret); 103b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt return ret; 104dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 105dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 1068984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naikint ifc_init6(void) 1078984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik{ 1088984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (ifc_ctl_sock6 == -1) { 1098984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik ifc_ctl_sock6 = socket(AF_INET6, SOCK_DGRAM, 0); 1108984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (ifc_ctl_sock6 < 0) { 1118984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik printerr("socket() failed: %s\n", strerror(errno)); 1128984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 1138984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 1148984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik return ifc_ctl_sock6 < 0 ? -1 : 0; 1158984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik} 1168984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 117dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectvoid ifc_close(void) 118dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 119b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt if (DBG) printerr("ifc_close"); 120dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (ifc_ctl_sock != -1) { 121dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project (void)close(ifc_ctl_sock); 122dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_ctl_sock = -1; 123dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 124dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 125dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 1268984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naikvoid ifc_close6(void) 1278984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik{ 1288984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (ifc_ctl_sock6 != -1) { 1298984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik (void)close(ifc_ctl_sock6); 1308984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik ifc_ctl_sock6 = -1; 1318984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 1328984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik} 1338984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 134dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic void ifc_init_ifr(const char *name, struct ifreq *ifr) 135dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 136dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project memset(ifr, 0, sizeof(struct ifreq)); 137dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project strncpy(ifr->ifr_name, name, IFNAMSIZ); 138dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifr->ifr_name[IFNAMSIZ - 1] = 0; 139dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 140dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 141dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint ifc_get_hwaddr(const char *name, void *ptr) 142dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 143dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int r; 144dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct ifreq ifr; 145dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_init_ifr(name, &ifr); 146dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 147dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project r = ioctl(ifc_ctl_sock, SIOCGIFHWADDR, &ifr); 148dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(r < 0) return -1; 149dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 150c88e09cb98fb3690c3cf49f5a825532e0d9bf300Szymon Jakubczak memcpy(ptr, &ifr.ifr_hwaddr.sa_data, ETH_ALEN); 151b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt return 0; 152dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 153dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 154dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint ifc_get_ifindex(const char *name, int *if_indexp) 155dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 156dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int r; 157dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct ifreq ifr; 158dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_init_ifr(name, &ifr); 159dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 160dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project r = ioctl(ifc_ctl_sock, SIOCGIFINDEX, &ifr); 161dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(r < 0) return -1; 162dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 163dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project *if_indexp = ifr.ifr_ifindex; 1647d05a80da8c210d11df657bcec8b19a6bf1e8a16Dmitry Shmidt return 0; 165dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 166dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 167dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic int ifc_set_flags(const char *name, unsigned set, unsigned clr) 168dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 169dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct ifreq ifr; 170dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_init_ifr(name, &ifr); 171dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 172dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(ioctl(ifc_ctl_sock, SIOCGIFFLAGS, &ifr) < 0) return -1; 173dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifr.ifr_flags = (ifr.ifr_flags & (~clr)) | set; 174dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return ioctl(ifc_ctl_sock, SIOCSIFFLAGS, &ifr); 175dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 176dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 177dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint ifc_up(const char *name) 178dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 179b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt int ret = ifc_set_flags(name, IFF_UP, 0); 180b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt if (DBG) printerr("ifc_up(%s) = %d", name, ret); 181b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt return ret; 182dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 183dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 184dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint ifc_down(const char *name) 185dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 186b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt int ret = ifc_set_flags(name, 0, IFF_UP); 187b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt if (DBG) printerr("ifc_down(%s) = %d", name, ret); 188b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt return ret; 189dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 190dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 191dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic void init_sockaddr_in(struct sockaddr *sa, in_addr_t addr) 192dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 193dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct sockaddr_in *sin = (struct sockaddr_in *) sa; 194dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sin->sin_family = AF_INET; 195dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sin->sin_port = 0; 196dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project sin->sin_addr.s_addr = addr; 197dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 198dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 199dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint ifc_set_addr(const char *name, in_addr_t addr) 200dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 201dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct ifreq ifr; 202b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt int ret; 203dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 204dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_init_ifr(name, &ifr); 205dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project init_sockaddr_in(&ifr.ifr_addr, addr); 2067d05a80da8c210d11df657bcec8b19a6bf1e8a16Dmitry Shmidt 207b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt ret = ioctl(ifc_ctl_sock, SIOCSIFADDR, &ifr); 208b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt if (DBG) printerr("ifc_set_addr(%s, xx) = %d", name, ret); 209b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt return ret; 210dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 211dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 212c88e09cb98fb3690c3cf49f5a825532e0d9bf300Szymon Jakubczakint ifc_set_hwaddr(const char *name, const void *ptr) 213c88e09cb98fb3690c3cf49f5a825532e0d9bf300Szymon Jakubczak{ 214c88e09cb98fb3690c3cf49f5a825532e0d9bf300Szymon Jakubczak int r; 215c88e09cb98fb3690c3cf49f5a825532e0d9bf300Szymon Jakubczak struct ifreq ifr; 216c88e09cb98fb3690c3cf49f5a825532e0d9bf300Szymon Jakubczak ifc_init_ifr(name, &ifr); 217c88e09cb98fb3690c3cf49f5a825532e0d9bf300Szymon Jakubczak 218c88e09cb98fb3690c3cf49f5a825532e0d9bf300Szymon Jakubczak ifr.ifr_hwaddr.sa_family = ARPHRD_ETHER; 219c88e09cb98fb3690c3cf49f5a825532e0d9bf300Szymon Jakubczak memcpy(&ifr.ifr_hwaddr.sa_data, ptr, ETH_ALEN); 220c88e09cb98fb3690c3cf49f5a825532e0d9bf300Szymon Jakubczak return ioctl(ifc_ctl_sock, SIOCSIFHWADDR, &ifr); 221c88e09cb98fb3690c3cf49f5a825532e0d9bf300Szymon Jakubczak} 222c88e09cb98fb3690c3cf49f5a825532e0d9bf300Szymon Jakubczak 2236f49d5f266dffee103a3af07a7f6266f405d2924Jake Hambyint ifc_set_mask(const char *name, in_addr_t mask) 2246f49d5f266dffee103a3af07a7f6266f405d2924Jake Hamby{ 2256f49d5f266dffee103a3af07a7f6266f405d2924Jake Hamby struct ifreq ifr; 226b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt int ret; 2276f49d5f266dffee103a3af07a7f6266f405d2924Jake Hamby 2286f49d5f266dffee103a3af07a7f6266f405d2924Jake Hamby ifc_init_ifr(name, &ifr); 2296f49d5f266dffee103a3af07a7f6266f405d2924Jake Hamby init_sockaddr_in(&ifr.ifr_addr, mask); 2306f49d5f266dffee103a3af07a7f6266f405d2924Jake Hamby 231b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt ret = ioctl(ifc_ctl_sock, SIOCSIFNETMASK, &ifr); 232b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt if (DBG) printerr("ifc_set_mask(%s, xx) = %d", name, ret); 233b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt return ret; 2346f49d5f266dffee103a3af07a7f6266f405d2924Jake Hamby} 2356f49d5f266dffee103a3af07a7f6266f405d2924Jake Hamby 23609dd819d2794caf1a17cd03592c100755fb25577Robert Greenwaltint ifc_set_prefixLength(const char *name, int prefixLength) 237dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 238dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct ifreq ifr; 23909dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt // TODO - support ipv6 24009dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt if (prefixLength > 32 || prefixLength < 0) return -1; 241dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 24209dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt in_addr_t mask = prefixLengthToIpv4Netmask(prefixLength); 243dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_init_ifr(name, &ifr); 244dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project init_sockaddr_in(&ifr.ifr_addr, mask); 2457d05a80da8c210d11df657bcec8b19a6bf1e8a16Dmitry Shmidt 246dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return ioctl(ifc_ctl_sock, SIOCSIFNETMASK, &ifr); 247dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 248dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 2499092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidtint ifc_get_addr(const char *name, in_addr_t *addr) 2509092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt{ 2519092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt struct ifreq ifr; 2529092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt int ret = 0; 2539092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt 2549092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt ifc_init_ifr(name, &ifr); 2559092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt if (addr != NULL) { 2569092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt ret = ioctl(ifc_ctl_sock, SIOCGIFADDR, &ifr); 2579092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt if (ret < 0) { 2589092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt *addr = 0; 2599092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt } else { 2609092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt *addr = ((struct sockaddr_in*) &ifr.ifr_addr)->sin_addr.s_addr; 2619092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt } 2629092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt } 2639092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt return ret; 2649092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt} 2659092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt 26609dd819d2794caf1a17cd03592c100755fb25577Robert Greenwaltint ifc_get_info(const char *name, in_addr_t *addr, int *prefixLength, unsigned *flags) 267dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 268dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct ifreq ifr; 269dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_init_ifr(name, &ifr); 270dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 271dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (addr != NULL) { 272dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(ioctl(ifc_ctl_sock, SIOCGIFADDR, &ifr) < 0) { 273dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project *addr = 0; 274dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 275dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project *addr = ((struct sockaddr_in*) &ifr.ifr_addr)->sin_addr.s_addr; 276dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 277dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 2787d05a80da8c210d11df657bcec8b19a6bf1e8a16Dmitry Shmidt 27909dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt if (prefixLength != NULL) { 280dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(ioctl(ifc_ctl_sock, SIOCGIFNETMASK, &ifr) < 0) { 28109dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt *prefixLength = 0; 282dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 28309dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt *prefixLength = ipv4NetmaskToPrefixLength((int) 28409dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt ((struct sockaddr_in*) &ifr.ifr_addr)->sin_addr.s_addr); 285dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 286dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 287dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 288dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (flags != NULL) { 289dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if(ioctl(ifc_ctl_sock, SIOCGIFFLAGS, &ifr) < 0) { 290dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project *flags = 0; 291dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 292dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project *flags = ifr.ifr_flags; 293dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 294dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 295dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 296dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 297dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 298dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 299021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwaltint ifc_act_on_ipv4_route(int action, const char *ifname, struct in_addr dst, int prefix_length, 3008984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik struct in_addr gw) 301dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 302dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct rtentry rt; 303dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int result; 3048984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik in_addr_t netmask; 305dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 306dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project memset(&rt, 0, sizeof(rt)); 3078984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 308dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project rt.rt_dst.sa_family = AF_INET; 3098984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik rt.rt_dev = (void*) ifname; 3108984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 31109dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt netmask = prefixLengthToIpv4Netmask(prefix_length); 3128984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik init_sockaddr_in(&rt.rt_genmask, netmask); 3138984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik init_sockaddr_in(&rt.rt_dst, dst.s_addr); 3148984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik rt.rt_flags = RTF_UP; 3158984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 3168984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (prefix_length == 32) { 3178984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik rt.rt_flags |= RTF_HOST; 3188984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 3198984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 3208984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (gw.s_addr != 0) { 3218984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik rt.rt_flags |= RTF_GATEWAY; 3228984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik init_sockaddr_in(&rt.rt_gateway, gw.s_addr); 3238984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 3248984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 325dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_init(); 3268984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 3278984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (ifc_ctl_sock < 0) { 3288984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik return -errno; 3298984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 3308984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 331021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwalt result = ioctl(ifc_ctl_sock, action, &rt); 3328984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (result < 0) { 3338984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (errno == EEXIST) { 3348984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik result = 0; 3358984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } else { 3368984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik result = -errno; 3378984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 338dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 339dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_close(); 340dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return result; 341dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 342dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 343b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt/* deprecated - v4 only */ 3448984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naikint ifc_create_default_route(const char *name, in_addr_t gw) 3458984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik{ 3468984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik struct in_addr in_dst, in_gw; 3478984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 3488984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik in_dst.s_addr = 0; 3498984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik in_gw.s_addr = gw; 3508984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 351b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt int ret = ifc_act_on_ipv4_route(SIOCADDRT, name, in_dst, 0, in_gw); 352b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt if (DBG) printerr("ifc_create_default_route(%s, %d) = %d", name, gw, ret); 353b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt return ret; 354b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt} 355b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt 356b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt/* deprecated v4-only */ 357b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwaltint ifc_add_host_route(const char *name, in_addr_t dst) 358b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt{ 359b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt struct in_addr in_dst, in_gw; 360b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt 361b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt in_dst.s_addr = dst; 362b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt in_gw.s_addr = 0; 363b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt 364b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt return ifc_act_on_ipv4_route(SIOCADDRT, name, in_dst, 32, in_gw); 3658984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik} 3668984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 367feb63e9e6f2d7aed5f0f21347992218ed8acb9f4Mike Lockwoodint ifc_enable(const char *ifname) 368feb63e9e6f2d7aed5f0f21347992218ed8acb9f4Mike Lockwood{ 369feb63e9e6f2d7aed5f0f21347992218ed8acb9f4Mike Lockwood int result; 370feb63e9e6f2d7aed5f0f21347992218ed8acb9f4Mike Lockwood 371feb63e9e6f2d7aed5f0f21347992218ed8acb9f4Mike Lockwood ifc_init(); 372feb63e9e6f2d7aed5f0f21347992218ed8acb9f4Mike Lockwood result = ifc_up(ifname); 373feb63e9e6f2d7aed5f0f21347992218ed8acb9f4Mike Lockwood ifc_close(); 374feb63e9e6f2d7aed5f0f21347992218ed8acb9f4Mike Lockwood return result; 375feb63e9e6f2d7aed5f0f21347992218ed8acb9f4Mike Lockwood} 376feb63e9e6f2d7aed5f0f21347992218ed8acb9f4Mike Lockwood 377dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint ifc_disable(const char *ifname) 378dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 3799092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt unsigned addr, count; 380dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int result; 381dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 382dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_init(); 383dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project result = ifc_down(ifname); 3849092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt 385dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_set_addr(ifname, 0); 3869092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt for (count=0, addr=1;((addr != 0) && (count < 255)); count++) { 3879092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt if (ifc_get_addr(ifname, &addr) < 0) 3889092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt break; 3899092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt if (addr) 3909092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt ifc_set_addr(ifname, 0); 3919092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt } 3929092b91ccaa4c6069036f72163e6473a5ca408c4Dmitry Shmidt 393dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_close(); 394dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return result; 395dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 396dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 397dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint ifc_reset_connections(const char *ifname) 398dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 399dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#ifdef HAVE_ANDROID_OS 4006cf73eadc752b619bc7c38d0d1277891eccbf81dLorenzo Colitti int result, success; 401dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project in_addr_t myaddr; 402dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct ifreq ifr; 4036cf73eadc752b619bc7c38d0d1277891eccbf81dLorenzo Colitti struct in6_ifreq ifr6; 404dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 4056cf73eadc752b619bc7c38d0d1277891eccbf81dLorenzo Colitti /* IPv4. Clear connections on the IP address. */ 406dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_init(); 407dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_get_info(ifname, &myaddr, NULL, NULL); 408dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_init_ifr(ifname, &ifr); 409dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project init_sockaddr_in(&ifr.ifr_addr, myaddr); 410dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project result = ioctl(ifc_ctl_sock, SIOCKILLADDR, &ifr); 411dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_close(); 4127d05a80da8c210d11df657bcec8b19a6bf1e8a16Dmitry Shmidt 4136cf73eadc752b619bc7c38d0d1277891eccbf81dLorenzo Colitti /* 4146cf73eadc752b619bc7c38d0d1277891eccbf81dLorenzo Colitti * IPv6. On Linux, when an interface goes down it loses all its IPv6 4156cf73eadc752b619bc7c38d0d1277891eccbf81dLorenzo Colitti * addresses, so we don't know which connections belonged to that interface 4166cf73eadc752b619bc7c38d0d1277891eccbf81dLorenzo Colitti * So we clear all unused IPv6 connections on the device by specifying an 4176cf73eadc752b619bc7c38d0d1277891eccbf81dLorenzo Colitti * empty IPv6 address. 4186cf73eadc752b619bc7c38d0d1277891eccbf81dLorenzo Colitti */ 4196cf73eadc752b619bc7c38d0d1277891eccbf81dLorenzo Colitti ifc_init6(); 4206cf73eadc752b619bc7c38d0d1277891eccbf81dLorenzo Colitti // This implicitly specifies an address of ::, i.e., kill all IPv6 sockets. 4216cf73eadc752b619bc7c38d0d1277891eccbf81dLorenzo Colitti memset(&ifr6, 0, sizeof(ifr6)); 4226cf73eadc752b619bc7c38d0d1277891eccbf81dLorenzo Colitti success = ioctl(ifc_ctl_sock6, SIOCKILLADDR, &ifr6); 4236cf73eadc752b619bc7c38d0d1277891eccbf81dLorenzo Colitti if (result == 0) { 4246cf73eadc752b619bc7c38d0d1277891eccbf81dLorenzo Colitti result = success; 4256cf73eadc752b619bc7c38d0d1277891eccbf81dLorenzo Colitti } 4266cf73eadc752b619bc7c38d0d1277891eccbf81dLorenzo Colitti ifc_close6(); 4276cf73eadc752b619bc7c38d0d1277891eccbf81dLorenzo Colitti 428dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return result; 429dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#else 430dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 431dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#endif 432dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 433dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 434dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 435dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Remove the routes associated with the named interface. 436dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 437dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint ifc_remove_host_routes(const char *name) 438dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 439dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char ifname[64]; 440dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project in_addr_t dest, gway, mask; 441dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int flags, refcnt, use, metric, mtu, win, irtt; 442dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct rtentry rt; 443dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project FILE *fp; 444dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct in_addr addr; 445dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 446dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fp = fopen("/proc/net/route", "r"); 447dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (fp == NULL) 448dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 449dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Skip the header line */ 450dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (fscanf(fp, "%*[^\n]\n") < 0) { 451dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fclose(fp); 452dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 453dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 454dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_init(); 455dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project for (;;) { 456dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int nread = fscanf(fp, "%63s%X%X%X%d%d%d%X%d%d%d\n", 457dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifname, &dest, &gway, &flags, &refcnt, &use, &metric, &mask, 458dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project &mtu, &win, &irtt); 459dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (nread != 11) { 460dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project break; 461dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 462dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if ((flags & (RTF_UP|RTF_HOST)) != (RTF_UP|RTF_HOST) 463dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project || strcmp(ifname, name) != 0) { 464dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project continue; 465dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 466dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project memset(&rt, 0, sizeof(rt)); 467dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project rt.rt_dev = (void *)name; 468dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project init_sockaddr_in(&rt.rt_dst, dest); 469dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project init_sockaddr_in(&rt.rt_gateway, gway); 470dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project init_sockaddr_in(&rt.rt_genmask, mask); 471dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project addr.s_addr = dest; 472dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (ioctl(ifc_ctl_sock, SIOCDELRT, &rt) < 0) { 473dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LOGD("failed to remove route for %s to %s: %s", 474dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifname, inet_ntoa(addr), strerror(errno)); 475dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 476dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 477dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fclose(fp); 478dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_close(); 479dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 480dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 481dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 482dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 483b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt * Return the address of the default gateway 484b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt * 485b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt * TODO: factor out common code from this and remove_host_routes() 486b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt * so that we only scan /proc/net/route in one place. 487b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt * 488b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt * DEPRECATED 489b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt */ 490b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwaltint ifc_get_default_route(const char *ifname) 491b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt{ 492b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt char name[64]; 493b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt in_addr_t dest, gway, mask; 494b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt int flags, refcnt, use, metric, mtu, win, irtt; 495b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt int result; 496b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt FILE *fp; 497b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt 498b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt fp = fopen("/proc/net/route", "r"); 499b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt if (fp == NULL) 500b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt return 0; 501b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt /* Skip the header line */ 502b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt if (fscanf(fp, "%*[^\n]\n") < 0) { 503b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt fclose(fp); 504b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt return 0; 505b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt } 506b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt ifc_init(); 507b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt result = 0; 508b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt for (;;) { 509b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt int nread = fscanf(fp, "%63s%X%X%X%d%d%d%X%d%d%d\n", 510b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt name, &dest, &gway, &flags, &refcnt, &use, &metric, &mask, 511b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt &mtu, &win, &irtt); 512b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt if (nread != 11) { 513b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt break; 514b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt } 515b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt if ((flags & (RTF_UP|RTF_GATEWAY)) == (RTF_UP|RTF_GATEWAY) 516b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt && dest == 0 517b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt && strcmp(ifname, name) == 0) { 518b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt result = gway; 519b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt break; 520b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt } 521b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt } 522b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt fclose(fp); 523b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt ifc_close(); 524b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt return result; 525b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt} 526b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt 527b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt/* 528b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt * Sets the specified gateway as the default route for the named interface. 529b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt * DEPRECATED 530b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt */ 531b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwaltint ifc_set_default_route(const char *ifname, in_addr_t gateway) 532b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt{ 533b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt struct in_addr addr; 534b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt int result; 535b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt 536b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt ifc_init(); 537b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt addr.s_addr = gateway; 538b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt if ((result = ifc_create_default_route(ifname, gateway)) < 0) { 539b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt LOGD("failed to add %s as default route for %s: %s", 540b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt inet_ntoa(addr), ifname, strerror(errno)); 541b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt } 542b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt ifc_close(); 543b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt return result; 544b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt} 545b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt 546b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt/* 547dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Removes the default route for the named interface. 548dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 549dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint ifc_remove_default_route(const char *ifname) 550dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 551dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct rtentry rt; 552dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int result; 553dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 554dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_init(); 555dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project memset(&rt, 0, sizeof(rt)); 556dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project rt.rt_dev = (void *)ifname; 557dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project rt.rt_flags = RTF_UP|RTF_GATEWAY; 558dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project init_sockaddr_in(&rt.rt_dst, 0); 559dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if ((result = ioctl(ifc_ctl_sock, SIOCDELRT, &rt)) < 0) { 560dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project LOGD("failed to remove default route for %s: %s", ifname, strerror(errno)); 561dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 562dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_close(); 563dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return result; 564dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 565dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 566dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint 567dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectifc_configure(const char *ifname, 568dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project in_addr_t address, 56909dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt uint32_t prefixLength, 570dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project in_addr_t gateway, 571dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project in_addr_t dns1, 572dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project in_addr_t dns2) { 573dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 574dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char dns_prop_name[PROPERTY_KEY_MAX]; 575dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 576dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_init(); 577dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 578dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (ifc_up(ifname)) { 579dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project printerr("failed to turn on interface %s: %s\n", ifname, strerror(errno)); 580dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_close(); 581dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 582dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 583dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (ifc_set_addr(ifname, address)) { 584dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project printerr("failed to set ipaddr %s: %s\n", ipaddr_to_string(address), strerror(errno)); 585dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_close(); 586dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 587dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 58809dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt if (ifc_set_prefixLength(ifname, prefixLength)) { 58909dd819d2794caf1a17cd03592c100755fb25577Robert Greenwalt printerr("failed to set prefixLength %d: %s\n", prefixLength, strerror(errno)); 590dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_close(); 591dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 592dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 593dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (ifc_create_default_route(ifname, gateway)) { 594dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project printerr("failed to set default route %s: %s\n", ipaddr_to_string(gateway), strerror(errno)); 595dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_close(); 596dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 597dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 598dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 599dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project ifc_close(); 600dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 601c88e09cb98fb3690c3cf49f5a825532e0d9bf300Szymon Jakubczak snprintf(dns_prop_name, sizeof(dns_prop_name), "net.%s.dns1", ifname); 602dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project property_set(dns_prop_name, dns1 ? ipaddr_to_string(dns1) : ""); 603c88e09cb98fb3690c3cf49f5a825532e0d9bf300Szymon Jakubczak snprintf(dns_prop_name, sizeof(dns_prop_name), "net.%s.dns2", ifname); 604dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project property_set(dns_prop_name, dns2 ? ipaddr_to_string(dns2) : ""); 605dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 606dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 607dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 6088984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 609021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwaltint ifc_act_on_ipv6_route(int action, const char *ifname, struct in6_addr dst, int prefix_length, 6108984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik struct in6_addr gw) 6118984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik{ 6128984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik struct in6_rtmsg rtmsg; 6138984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik int result; 6148984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik int ifindex; 6158984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 6168984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik memset(&rtmsg, 0, sizeof(rtmsg)); 6178984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 6188984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik ifindex = if_nametoindex(ifname); 6198984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (ifindex == 0) { 6208984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik printerr("if_nametoindex() failed: interface %s\n", ifname); 6218984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik return -ENXIO; 6228984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 6238984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 6248984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik rtmsg.rtmsg_ifindex = ifindex; 6258984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik rtmsg.rtmsg_dst = dst; 6268984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik rtmsg.rtmsg_dst_len = prefix_length; 6278984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik rtmsg.rtmsg_flags = RTF_UP; 6288984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 6298984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (prefix_length == 128) { 6308984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik rtmsg.rtmsg_flags |= RTF_HOST; 6318984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 6328984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 6338984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (memcmp(&gw, &in6addr_any, sizeof(in6addr_any))) { 6348984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik rtmsg.rtmsg_flags |= RTF_GATEWAY; 6358984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik rtmsg.rtmsg_gateway = gw; 6368984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 6378984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 6388984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik ifc_init6(); 6398984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 6408984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (ifc_ctl_sock6 < 0) { 6418984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik return -errno; 6428984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 6438984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 644021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwalt result = ioctl(ifc_ctl_sock6, action, &rtmsg); 6458984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (result < 0) { 6468984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (errno == EEXIST) { 6478984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik result = 0; 6488984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } else { 6498984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik result = -errno; 6508984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 6518984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 6528984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik ifc_close6(); 6538984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik return result; 6548984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik} 6558984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 656021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwaltint ifc_act_on_route(int action, const char *ifname, const char *dst, int prefix_length, 657021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwalt const char *gw) 6588984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik{ 6598984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik int ret = 0; 6608984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik struct sockaddr_in ipv4_dst, ipv4_gw; 6618984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik struct sockaddr_in6 ipv6_dst, ipv6_gw; 6628984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik struct addrinfo hints, *addr_ai, *gw_ai; 6638984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 6648984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik memset(&hints, 0, sizeof(hints)); 6658984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik hints.ai_family = AF_UNSPEC; /* Allow IPv4 or IPv6 */ 6668984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik hints.ai_flags = AI_NUMERICHOST; 6678984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 6688984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik ret = getaddrinfo(dst, NULL, &hints, &addr_ai); 6698984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 6708984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (ret != 0) { 6718984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik printerr("getaddrinfo failed: invalid address %s\n", dst); 6728984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik return -EINVAL; 6738984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 6748984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 675021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwalt if (gw == NULL || (strlen(gw) == 0)) { 6768984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (addr_ai->ai_family == AF_INET6) { 6778984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik gw = "::"; 6788984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } else if (addr_ai->ai_family == AF_INET) { 6798984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik gw = "0.0.0.0"; 6808984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 6818984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 6828984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 683021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwalt if (((addr_ai->ai_family == AF_INET6) && (prefix_length < 0 || prefix_length > 128)) || 684021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwalt ((addr_ai->ai_family == AF_INET) && (prefix_length < 0 || prefix_length > 32))) { 685021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwalt printerr("ifc_add_route: invalid prefix length"); 686021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwalt freeaddrinfo(addr_ai); 687021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwalt return -EINVAL; 688021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwalt } 689021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwalt 6908984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik ret = getaddrinfo(gw, NULL, &hints, &gw_ai); 6918984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (ret != 0) { 6928984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik printerr("getaddrinfo failed: invalid gateway %s\n", gw); 6938984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik freeaddrinfo(addr_ai); 6948984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik return -EINVAL; 6958984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 6968984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 6978984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (addr_ai->ai_family != gw_ai->ai_family) { 6988984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik printerr("ifc_add_route: different address families: %s and %s\n", dst, gw); 6998984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik freeaddrinfo(addr_ai); 7008984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik freeaddrinfo(gw_ai); 7018984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik return -EINVAL; 7028984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 7038984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 7048984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik if (addr_ai->ai_family == AF_INET6) { 7058984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik memcpy(&ipv6_dst, addr_ai->ai_addr, sizeof(struct sockaddr_in6)); 7068984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik memcpy(&ipv6_gw, gw_ai->ai_addr, sizeof(struct sockaddr_in6)); 707021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwalt ret = ifc_act_on_ipv6_route(action, ifname, ipv6_dst.sin6_addr, 708021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwalt prefix_length, ipv6_gw.sin6_addr); 7098984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } else if (addr_ai->ai_family == AF_INET) { 7108984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik memcpy(&ipv4_dst, addr_ai->ai_addr, sizeof(struct sockaddr_in)); 7118984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik memcpy(&ipv4_gw, gw_ai->ai_addr, sizeof(struct sockaddr_in)); 712021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwalt ret = ifc_act_on_ipv4_route(action, ifname, ipv4_dst.sin_addr, 713021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwalt prefix_length, ipv4_gw.sin_addr); 7148984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } else { 7158984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik printerr("ifc_add_route: getaddrinfo returned un supported address family %d\n", 7168984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik addr_ai->ai_family); 7178984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik ret = -EAFNOSUPPORT; 7188984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik } 7198984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik 7208984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik freeaddrinfo(addr_ai); 7218984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik freeaddrinfo(gw_ai); 7228984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik return ret; 7238984bb9691f8d3e2665f7aae0896b9bd2ade0c19Banavathu, Srinivas Naik} 724021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwalt 725b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt/* 726b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt * DEPRECATED 727b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt */ 728b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwaltint ifc_add_ipv4_route(const char *ifname, struct in_addr dst, int prefix_length, 729b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt struct in_addr gw) 730b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt{ 731b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt int i =ifc_act_on_ipv4_route(SIOCADDRT, ifname, dst, prefix_length, gw); 732b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt printerr("ifc_add_ipv4_route(%s, xx, %d, xx) = %d", ifname, prefix_length, i); 733b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt return i; 734b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt} 735b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt 736b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt/* 737b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt * DEPRECATED 738b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt */ 739b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwaltint ifc_add_ipv6_route(const char *ifname, struct in6_addr dst, int prefix_length, 740b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt struct in6_addr gw) 741b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt{ 742b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt return ifc_act_on_ipv6_route(SIOCADDRT, ifname, dst, prefix_length, gw); 743b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt} 744b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt 745021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwaltint ifc_add_route(const char *ifname, const char *dst, int prefix_length, const char *gw) 746021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwalt{ 747b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt int i = ifc_act_on_route(SIOCADDRT, ifname, dst, prefix_length, gw); 748b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt printerr("ifc_add_route(%s, %s, %d, %s) = %d", ifname, dst, prefix_length, gw, i); 749b6b48ae47a44cb231d0a16ca618ac28b0024c11cRobert Greenwalt return i; 750021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwalt} 751021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwalt 752021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwaltint ifc_remove_route(const char *ifname, const char*dst, int prefix_length, const char *gw) 753021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwalt{ 754021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwalt return ifc_act_on_route(SIOCDELRT, ifname, dst, prefix_length, gw); 755021d0a2e7cd7c65036d425b7bef775bbc1733864Robert Greenwalt} 756