dhcp_utils.c revision 8c85a00db6da092ec3766facd49132fa4fc319a1
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/* Utilities for managing the dhcpcd DHCP client daemon */ 18dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 19dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <stdio.h> 20dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <stdlib.h> 21dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <unistd.h> 22dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <arpa/inet.h> 23dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <netinet/in.h> 24dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 25dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <cutils/properties.h> 26dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 279363b7d5da7e17842432251384f8dc46902ac323Dmitry Shmidtstatic const char DAEMON_NAME[] = "dhcpcd"; 289363b7d5da7e17842432251384f8dc46902ac323Dmitry Shmidtstatic const char DAEMON_PROP_NAME[] = "init.svc.dhcpcd"; 299363b7d5da7e17842432251384f8dc46902ac323Dmitry Shmidtstatic const char HOSTNAME_PROP_NAME[] = "net.hostname"; 30dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic const char DHCP_PROP_NAME_PREFIX[] = "dhcp"; 31dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic const int NAP_TIME = 1; /* wait for 1 second at a time */ 32dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* when polling for property values */ 33dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic char errmsg[100]; 34dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 35dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 36dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Wait for a system property to be assigned a specified value. 37dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * If desired_value is NULL, then just wait for the property to 38dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * be created with any value. maxwait is the maximum amount of 39dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * time in seconds to wait before giving up. 40dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 41dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic int wait_for_property(const char *name, const char *desired_value, int maxwait) 42dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 43dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char value[PROPERTY_VALUE_MAX] = {'\0'}; 44dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project int maxnaps = maxwait / NAP_TIME; 45dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 46dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (maxnaps < 1) { 47dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project maxnaps = 1; 48dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 49dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 50dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project while (maxnaps-- > 0) { 51dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project usleep(1000000); 52dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (property_get(name, value, NULL)) { 53dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (desired_value == NULL || 54dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project strcmp(value, desired_value) == 0) { 55dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 56dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 57dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 58dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 59dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; /* failure */ 60dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 61dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 62dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic void fill_ip_info(const char *interface, 63dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project in_addr_t *ipaddr, 64dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project in_addr_t *gateway, 65dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project in_addr_t *mask, 66dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project in_addr_t *dns1, 67dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project in_addr_t *dns2, 68dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project in_addr_t *server, 69dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project uint32_t *lease) 70dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 71dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char prop_name[PROPERTY_KEY_MAX]; 72dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char prop_value[PROPERTY_VALUE_MAX]; 73dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project struct in_addr addr; 74dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project in_addr_t iaddr; 75dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 76dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(prop_name, sizeof(prop_name), "%s.%s.ipaddress", DHCP_PROP_NAME_PREFIX, interface); 77dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (property_get(prop_name, prop_value, NULL) && inet_aton(prop_value, &addr)) { 78dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project *ipaddr = addr.s_addr; 79dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 80dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project *ipaddr = 0; 81dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 82dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(prop_name, sizeof(prop_name), "%s.%s.gateway", DHCP_PROP_NAME_PREFIX, interface); 83dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (property_get(prop_name, prop_value, NULL) && inet_aton(prop_value, &addr)) { 84dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project *gateway = addr.s_addr; 85dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 86dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project *gateway = 0; 87dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 88dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(prop_name, sizeof(prop_name), "%s.%s.mask", DHCP_PROP_NAME_PREFIX, interface); 89dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (property_get(prop_name, prop_value, NULL) && inet_aton(prop_value, &addr)) { 90dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project *mask = addr.s_addr; 91dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 92dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project *mask = 0; 93dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 94dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(prop_name, sizeof(prop_name), "%s.%s.dns1", DHCP_PROP_NAME_PREFIX, interface); 95dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (property_get(prop_name, prop_value, NULL) && inet_aton(prop_value, &addr)) { 96dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project *dns1 = addr.s_addr; 97dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 98dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project *dns1 = 0; 99dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 100dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(prop_name, sizeof(prop_name), "%s.%s.dns2", DHCP_PROP_NAME_PREFIX, interface); 101dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (property_get(prop_name, prop_value, NULL) && inet_aton(prop_value, &addr)) { 102dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project *dns2 = addr.s_addr; 103dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 104dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project *dns2 = 0; 105dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 106dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(prop_name, sizeof(prop_name), "%s.%s.server", DHCP_PROP_NAME_PREFIX, interface); 107dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (property_get(prop_name, prop_value, NULL) && inet_aton(prop_value, &addr)) { 108dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project *server = addr.s_addr; 109dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 110dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project *server = 0; 111dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 112dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(prop_name, sizeof(prop_name), "%s.%s.leasetime", DHCP_PROP_NAME_PREFIX, interface); 113dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (property_get(prop_name, prop_value, NULL)) { 114dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project *lease = atol(prop_value); 115dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 116dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 117dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 1188c85a00db6da092ec3766facd49132fa4fc319a1Szymon Jakubczakstatic const char *ipaddr_to_string(in_addr_t addr) 1198c85a00db6da092ec3766facd49132fa4fc319a1Szymon Jakubczak{ 1208c85a00db6da092ec3766facd49132fa4fc319a1Szymon Jakubczak struct in_addr in_addr; 1218c85a00db6da092ec3766facd49132fa4fc319a1Szymon Jakubczak 1228c85a00db6da092ec3766facd49132fa4fc319a1Szymon Jakubczak in_addr.s_addr = addr; 1238c85a00db6da092ec3766facd49132fa4fc319a1Szymon Jakubczak return inet_ntoa(in_addr); 1248c85a00db6da092ec3766facd49132fa4fc319a1Szymon Jakubczak} 1258c85a00db6da092ec3766facd49132fa4fc319a1Szymon Jakubczak 126dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 127dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Start the dhcp client daemon, and wait for it to finish 128dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * configuring the interface. 129dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 130dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint dhcp_do_request(const char *interface, 131dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project in_addr_t *ipaddr, 132dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project in_addr_t *gateway, 133dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project in_addr_t *mask, 134dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project in_addr_t *dns1, 135dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project in_addr_t *dns2, 136dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project in_addr_t *server, 137dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project uint32_t *lease) 138dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 139dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char result_prop_name[PROPERTY_KEY_MAX]; 140dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char prop_value[PROPERTY_VALUE_MAX] = {'\0'}; 1419363b7d5da7e17842432251384f8dc46902ac323Dmitry Shmidt char daemon_cmd[PROPERTY_VALUE_MAX * 2]; 142dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project const char *ctrl_prop = "ctl.start"; 143dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project const char *desired_status = "running"; 144dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 145dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(result_prop_name, sizeof(result_prop_name), "%s.%s.result", 146dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project DHCP_PROP_NAME_PREFIX, 147dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project interface); 148dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Erase any previous setting of the dhcp result property */ 149dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project property_set(result_prop_name, ""); 150dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 151dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Start the daemon and wait until it's ready */ 1529363b7d5da7e17842432251384f8dc46902ac323Dmitry Shmidt if (property_get(HOSTNAME_PROP_NAME, prop_value, NULL) && (prop_value[0] != '\0')) 1539363b7d5da7e17842432251384f8dc46902ac323Dmitry Shmidt snprintf(daemon_cmd, sizeof(daemon_cmd), "%s:-h %s %s", DAEMON_NAME, 1549363b7d5da7e17842432251384f8dc46902ac323Dmitry Shmidt prop_value, interface); 1559363b7d5da7e17842432251384f8dc46902ac323Dmitry Shmidt else 1569363b7d5da7e17842432251384f8dc46902ac323Dmitry Shmidt snprintf(daemon_cmd, sizeof(daemon_cmd), "%s:%s", DAEMON_NAME, interface); 1579363b7d5da7e17842432251384f8dc46902ac323Dmitry Shmidt memset(prop_value, '\0', PROPERTY_VALUE_MAX); 1589363b7d5da7e17842432251384f8dc46902ac323Dmitry Shmidt property_set(ctrl_prop, daemon_cmd); 159dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (wait_for_property(DAEMON_PROP_NAME, desired_status, 10) < 0) { 160dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(errmsg, sizeof(errmsg), "%s", "Timed out waiting for dhcpcd to start"); 161dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 162dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 163dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 164dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Wait for the daemon to return a result */ 165dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (wait_for_property(result_prop_name, NULL, 30) < 0) { 166dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(errmsg, sizeof(errmsg), "%s", "Timed out waiting for DHCP to finish"); 167dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 168dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 169dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 170dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (!property_get(result_prop_name, prop_value, NULL)) { 171dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* shouldn't ever happen, given the success of wait_for_property() */ 172dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(errmsg, sizeof(errmsg), "%s", "DHCP result property was not set"); 173dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 174dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 175dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (strcmp(prop_value, "ok") == 0) { 1768c85a00db6da092ec3766facd49132fa4fc319a1Szymon Jakubczak char dns_prop_name[PROPERTY_KEY_MAX]; 177dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project fill_ip_info(interface, ipaddr, gateway, mask, dns1, dns2, server, lease); 1788c85a00db6da092ec3766facd49132fa4fc319a1Szymon Jakubczak /* copy the dhcp.XXX.dns properties to net.XXX.dns */ 1798c85a00db6da092ec3766facd49132fa4fc319a1Szymon Jakubczak snprintf(dns_prop_name, sizeof(dns_prop_name), "net.%s.dns1", interface); 1808c85a00db6da092ec3766facd49132fa4fc319a1Szymon Jakubczak property_set(dns_prop_name, *dns1 ? ipaddr_to_string(*dns1) : ""); 1818c85a00db6da092ec3766facd49132fa4fc319a1Szymon Jakubczak snprintf(dns_prop_name, sizeof(dns_prop_name), "net.%s.dns2", interface); 1828c85a00db6da092ec3766facd49132fa4fc319a1Szymon Jakubczak property_set(dns_prop_name, *dns2 ? ipaddr_to_string(*dns2) : ""); 183dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 184dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 185dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(errmsg, sizeof(errmsg), "DHCP result was %s", prop_value); 186dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 187dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 188dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 189dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 190dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/** 191dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Stop the DHCP client daemon. 192dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 193dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint dhcp_stop(const char *interface) 194dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 195dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char result_prop_name[PROPERTY_KEY_MAX]; 196dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project const char *ctrl_prop = "ctl.stop"; 197dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project const char *desired_status = "stopped"; 198dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 199dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(result_prop_name, sizeof(result_prop_name), "%s.%s.result", 200dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project DHCP_PROP_NAME_PREFIX, 201dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project interface); 202dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Stop the daemon and wait until it's reported to be stopped */ 203dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project property_set(ctrl_prop, DAEMON_NAME); 204dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (wait_for_property(DAEMON_PROP_NAME, desired_status, 5) < 0) { 205dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 206dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 207dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project property_set(result_prop_name, "failed"); 208dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 209dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 210dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 211dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/** 212dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Release the current DHCP client lease. 213dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 214dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint dhcp_release_lease(const char *interface) 215dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 216dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project const char *ctrl_prop = "ctl.stop"; 217dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project const char *desired_status = "stopped"; 218dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 219dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Stop the daemon and wait until it's reported to be stopped */ 220dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project property_set(ctrl_prop, DAEMON_NAME); 221dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (wait_for_property(DAEMON_PROP_NAME, desired_status, 5) < 0) { 222dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 223dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 224dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 225dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 226dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 227dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectchar *dhcp_get_errmsg() { 228dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return errmsg; 229dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 230