dhcp_utils.c revision ed21633a5e81f7bb9688da98bc9ea9b08b6bce20
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> 21b93e5812faffd3b6c5fb349072413aace31918d8Olivier Bailly#include <string.h> 22dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <unistd.h> 23dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <arpa/inet.h> 24dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <netinet/in.h> 25dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 26dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project#include <cutils/properties.h> 27dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 289363b7d5da7e17842432251384f8dc46902ac323Dmitry Shmidtstatic const char DAEMON_NAME[] = "dhcpcd"; 299363b7d5da7e17842432251384f8dc46902ac323Dmitry Shmidtstatic const char DAEMON_PROP_NAME[] = "init.svc.dhcpcd"; 309363b7d5da7e17842432251384f8dc46902ac323Dmitry Shmidtstatic const char HOSTNAME_PROP_NAME[] = "net.hostname"; 31dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic const char DHCP_PROP_NAME_PREFIX[] = "dhcp"; 32b1723b68921512f26562384898b9600f8f11d25eIrfan Sheriffstatic const int NAP_TIME = 200; /* wait for 200ms at a time */ 33dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* when polling for property values */ 349d157870345fa18ee7e639a85f6bcc4afb50c648TK MUNstatic const char DAEMON_NAME_RENEW[] = "iprenew"; 35dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic char errmsg[100]; 36a329b4296cab06ea0b6e95065d8eabb82d3fd76drepo sync/* interface suffix on dhcpcd */ 37a329b4296cab06ea0b6e95065d8eabb82d3fd76drepo sync#define MAX_DAEMON_SUFFIX 25 38dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 39dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 40dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Wait for a system property to be assigned a specified value. 41dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * If desired_value is NULL, then just wait for the property to 42dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * be created with any value. maxwait is the maximum amount of 43dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * time in seconds to wait before giving up. 44dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 45dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic int wait_for_property(const char *name, const char *desired_value, int maxwait) 46dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 47dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char value[PROPERTY_VALUE_MAX] = {'\0'}; 48b1723b68921512f26562384898b9600f8f11d25eIrfan Sheriff int maxnaps = (maxwait * 1000) / NAP_TIME; 49dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 50dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (maxnaps < 1) { 51dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project maxnaps = 1; 52dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 53dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 54dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project while (maxnaps-- > 0) { 55b1723b68921512f26562384898b9600f8f11d25eIrfan Sheriff usleep(NAP_TIME * 1000); 56dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (property_get(name, value, NULL)) { 57dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (desired_value == NULL || 58dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project strcmp(value, desired_value) == 0) { 59dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 60dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 61dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 62dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 63dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; /* failure */ 64dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 65dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 66faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwaltstatic int fill_ip_info(const char *interface, 67faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt char *ipaddr, 68faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt char *gateway, 69faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt uint32_t *prefixLength, 70faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt char *dns1, 71faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt char *dns2, 72faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt char *server, 73dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project uint32_t *lease) 74dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 75dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char prop_name[PROPERTY_KEY_MAX]; 76dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char prop_value[PROPERTY_VALUE_MAX]; 77dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 78dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(prop_name, sizeof(prop_name), "%s.%s.ipaddress", DHCP_PROP_NAME_PREFIX, interface); 79faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt property_get(prop_name, ipaddr, NULL); 80faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt 81dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(prop_name, sizeof(prop_name), "%s.%s.gateway", DHCP_PROP_NAME_PREFIX, interface); 82faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt property_get(prop_name, gateway, NULL); 83faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt 84bdaaec1ba0a7cf832ad7fe475a7c541ed9973e52Irfan Sheriff snprintf(prop_name, sizeof(prop_name), "%s.%s.server", DHCP_PROP_NAME_PREFIX, interface); 85bdaaec1ba0a7cf832ad7fe475a7c541ed9973e52Irfan Sheriff property_get(prop_name, server, NULL); 86bdaaec1ba0a7cf832ad7fe475a7c541ed9973e52Irfan Sheriff 87bdaaec1ba0a7cf832ad7fe475a7c541ed9973e52Irfan Sheriff //TODO: Handle IPv6 when we change system property usage 88bdaaec1ba0a7cf832ad7fe475a7c541ed9973e52Irfan Sheriff if (strcmp(gateway, "0.0.0.0") == 0) { 89bdaaec1ba0a7cf832ad7fe475a7c541ed9973e52Irfan Sheriff //DHCP server is our best bet as gateway 90bdaaec1ba0a7cf832ad7fe475a7c541ed9973e52Irfan Sheriff strncpy(gateway, server, PROPERTY_VALUE_MAX); 91bdaaec1ba0a7cf832ad7fe475a7c541ed9973e52Irfan Sheriff } 92bdaaec1ba0a7cf832ad7fe475a7c541ed9973e52Irfan Sheriff 93dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(prop_name, sizeof(prop_name), "%s.%s.mask", DHCP_PROP_NAME_PREFIX, interface); 94faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt if (property_get(prop_name, prop_value, NULL)) { 95faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt int p; 96faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt // this conversion is v4 only, but this dhcp client is v4 only anyway 97faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt in_addr_t mask = ntohl(inet_addr(prop_value)); 98faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt // Check netmask is a valid IP address. ntohl gives NONE response (all 1's) for 99faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt // non 255.255.255.255 inputs. if we get that value check if it is legit.. 100faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt if (mask == INADDR_NONE && strcmp(prop_value, "255.255.255.255") != 0) { 101faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt snprintf(errmsg, sizeof(errmsg), "DHCP gave invalid net mask %s", prop_value); 102faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt return -1; 103faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt } 104faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt for (p = 0; p < 32; p++) { 105faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt if (mask == 0) break; 106faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt // check for non-contiguous netmask, e.g., 255.254.255.0 107faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt if ((mask & 0x80000000) == 0) { 108faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt snprintf(errmsg, sizeof(errmsg), "DHCP gave invalid net mask %s", prop_value); 109faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt return -1; 110faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt } 111faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt mask = mask << 1; 112faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt } 113faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt *prefixLength = p; 114dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 115dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(prop_name, sizeof(prop_name), "%s.%s.dns1", DHCP_PROP_NAME_PREFIX, interface); 116faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt property_get(prop_name, dns1, NULL); 117faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt 118dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(prop_name, sizeof(prop_name), "%s.%s.dns2", DHCP_PROP_NAME_PREFIX, interface); 119faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt property_get(prop_name, dns2, NULL); 120faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt 121dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(prop_name, sizeof(prop_name), "%s.%s.leasetime", DHCP_PROP_NAME_PREFIX, interface); 122dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (property_get(prop_name, prop_value, NULL)) { 123dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project *lease = atol(prop_value); 124dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 125faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt return 0; 126dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 127dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 1288c85a00db6da092ec3766facd49132fa4fc319a1Szymon Jakubczakstatic const char *ipaddr_to_string(in_addr_t addr) 1298c85a00db6da092ec3766facd49132fa4fc319a1Szymon Jakubczak{ 1308c85a00db6da092ec3766facd49132fa4fc319a1Szymon Jakubczak struct in_addr in_addr; 1318c85a00db6da092ec3766facd49132fa4fc319a1Szymon Jakubczak 1328c85a00db6da092ec3766facd49132fa4fc319a1Szymon Jakubczak in_addr.s_addr = addr; 1338c85a00db6da092ec3766facd49132fa4fc319a1Szymon Jakubczak return inet_ntoa(in_addr); 1348c85a00db6da092ec3766facd49132fa4fc319a1Szymon Jakubczak} 1358c85a00db6da092ec3766facd49132fa4fc319a1Szymon Jakubczak 136a329b4296cab06ea0b6e95065d8eabb82d3fd76drepo syncvoid get_daemon_suffix(const char *interface, char *daemon_suffix) { 137a329b4296cab06ea0b6e95065d8eabb82d3fd76drepo sync /* Use p2p suffix for any p2p interface. */ 138a329b4296cab06ea0b6e95065d8eabb82d3fd76drepo sync if (strncmp(interface, "p2p",3) == 0) { 139a329b4296cab06ea0b6e95065d8eabb82d3fd76drepo sync sprintf(daemon_suffix, "p2p"); 140a329b4296cab06ea0b6e95065d8eabb82d3fd76drepo sync } else { 141a329b4296cab06ea0b6e95065d8eabb82d3fd76drepo sync snprintf(daemon_suffix, MAX_DAEMON_SUFFIX, "%s", interface); 142a329b4296cab06ea0b6e95065d8eabb82d3fd76drepo sync } 143a329b4296cab06ea0b6e95065d8eabb82d3fd76drepo sync} 144a329b4296cab06ea0b6e95065d8eabb82d3fd76drepo sync 145dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 146dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Start the dhcp client daemon, and wait for it to finish 147dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * configuring the interface. 148dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 149dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint dhcp_do_request(const char *interface, 150faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt char *ipaddr, 151faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt char *gateway, 152faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt uint32_t *prefixLength, 153faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt char *dns1, 154faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt char *dns2, 155faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt char *server, 156dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project uint32_t *lease) 157dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 158dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char result_prop_name[PROPERTY_KEY_MAX]; 1599d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN char daemon_prop_name[PROPERTY_KEY_MAX]; 160dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char prop_value[PROPERTY_VALUE_MAX] = {'\0'}; 1619363b7d5da7e17842432251384f8dc46902ac323Dmitry Shmidt char daemon_cmd[PROPERTY_VALUE_MAX * 2]; 162dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project const char *ctrl_prop = "ctl.start"; 163dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project const char *desired_status = "running"; 164a329b4296cab06ea0b6e95065d8eabb82d3fd76drepo sync char daemon_suffix[MAX_DAEMON_SUFFIX]; 165a329b4296cab06ea0b6e95065d8eabb82d3fd76drepo sync 166a329b4296cab06ea0b6e95065d8eabb82d3fd76drepo sync get_daemon_suffix(interface, daemon_suffix); 167dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 168dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(result_prop_name, sizeof(result_prop_name), "%s.%s.result", 169dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project DHCP_PROP_NAME_PREFIX, 170dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project interface); 1719d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN 1729d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN snprintf(daemon_prop_name, sizeof(daemon_prop_name), "%s_%s", 1739d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN DAEMON_PROP_NAME, 174a329b4296cab06ea0b6e95065d8eabb82d3fd76drepo sync daemon_suffix); 1759d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN 176dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Erase any previous setting of the dhcp result property */ 177dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project property_set(result_prop_name, ""); 178dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 179dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Start the daemon and wait until it's ready */ 1809363b7d5da7e17842432251384f8dc46902ac323Dmitry Shmidt if (property_get(HOSTNAME_PROP_NAME, prop_value, NULL) && (prop_value[0] != '\0')) 181a329b4296cab06ea0b6e95065d8eabb82d3fd76drepo sync snprintf(daemon_cmd, sizeof(daemon_cmd), "%s_%s:-h %s %s", DAEMON_NAME, daemon_suffix, 1829363b7d5da7e17842432251384f8dc46902ac323Dmitry Shmidt prop_value, interface); 1839363b7d5da7e17842432251384f8dc46902ac323Dmitry Shmidt else 184a329b4296cab06ea0b6e95065d8eabb82d3fd76drepo sync snprintf(daemon_cmd, sizeof(daemon_cmd), "%s_%s:%s", DAEMON_NAME, daemon_suffix, interface); 1859363b7d5da7e17842432251384f8dc46902ac323Dmitry Shmidt memset(prop_value, '\0', PROPERTY_VALUE_MAX); 1869363b7d5da7e17842432251384f8dc46902ac323Dmitry Shmidt property_set(ctrl_prop, daemon_cmd); 1879d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN if (wait_for_property(daemon_prop_name, desired_status, 10) < 0) { 188dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(errmsg, sizeof(errmsg), "%s", "Timed out waiting for dhcpcd to start"); 189dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 190dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 191dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 192dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Wait for the daemon to return a result */ 193dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (wait_for_property(result_prop_name, NULL, 30) < 0) { 194dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(errmsg, sizeof(errmsg), "%s", "Timed out waiting for DHCP to finish"); 195dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 196dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 197dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 198dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (!property_get(result_prop_name, prop_value, NULL)) { 199dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* shouldn't ever happen, given the success of wait_for_property() */ 200dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(errmsg, sizeof(errmsg), "%s", "DHCP result property was not set"); 201dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 202dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 203dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (strcmp(prop_value, "ok") == 0) { 2048c85a00db6da092ec3766facd49132fa4fc319a1Szymon Jakubczak char dns_prop_name[PROPERTY_KEY_MAX]; 205faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt if (fill_ip_info(interface, ipaddr, gateway, prefixLength, dns1, dns2, server, lease) 206faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt == -1) { 207faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt return -1; 208faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt } 209faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt 210faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt /* copy dns data to system properties - TODO - remove this after we have async 211faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt * notification of renewal's */ 2128c85a00db6da092ec3766facd49132fa4fc319a1Szymon Jakubczak snprintf(dns_prop_name, sizeof(dns_prop_name), "net.%s.dns1", interface); 2138c85a00db6da092ec3766facd49132fa4fc319a1Szymon Jakubczak property_set(dns_prop_name, *dns1 ? ipaddr_to_string(*dns1) : ""); 2148c85a00db6da092ec3766facd49132fa4fc319a1Szymon Jakubczak snprintf(dns_prop_name, sizeof(dns_prop_name), "net.%s.dns2", interface); 2158c85a00db6da092ec3766facd49132fa4fc319a1Szymon Jakubczak property_set(dns_prop_name, *dns2 ? ipaddr_to_string(*dns2) : ""); 216dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 217dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 218dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(errmsg, sizeof(errmsg), "DHCP result was %s", prop_value); 219dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 220dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 221dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 222dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 223dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/** 224dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Stop the DHCP client daemon. 225dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 226dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint dhcp_stop(const char *interface) 227dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 228dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char result_prop_name[PROPERTY_KEY_MAX]; 2299d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN char daemon_prop_name[PROPERTY_KEY_MAX]; 2309d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN char daemon_cmd[PROPERTY_VALUE_MAX * 2]; 231dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project const char *ctrl_prop = "ctl.stop"; 232dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project const char *desired_status = "stopped"; 233dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 234a329b4296cab06ea0b6e95065d8eabb82d3fd76drepo sync char daemon_suffix[MAX_DAEMON_SUFFIX]; 235a329b4296cab06ea0b6e95065d8eabb82d3fd76drepo sync 236a329b4296cab06ea0b6e95065d8eabb82d3fd76drepo sync get_daemon_suffix(interface, daemon_suffix); 237a329b4296cab06ea0b6e95065d8eabb82d3fd76drepo sync 238dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(result_prop_name, sizeof(result_prop_name), "%s.%s.result", 239dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project DHCP_PROP_NAME_PREFIX, 240dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project interface); 2419d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN 2429d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN snprintf(daemon_prop_name, sizeof(daemon_prop_name), "%s_%s", 2439d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN DAEMON_PROP_NAME, 244a329b4296cab06ea0b6e95065d8eabb82d3fd76drepo sync daemon_suffix); 2459d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN 246a329b4296cab06ea0b6e95065d8eabb82d3fd76drepo sync snprintf(daemon_cmd, sizeof(daemon_cmd), "%s_%s", DAEMON_NAME, daemon_suffix); 2479d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN 248dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Stop the daemon and wait until it's reported to be stopped */ 2499d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN property_set(ctrl_prop, daemon_cmd); 2509d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN if (wait_for_property(daemon_prop_name, desired_status, 5) < 0) { 251dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 252dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 253dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project property_set(result_prop_name, "failed"); 254dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 255dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 256dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 257dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/** 258dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Release the current DHCP client lease. 259dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 260dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint dhcp_release_lease(const char *interface) 261dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 2629d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN char daemon_prop_name[PROPERTY_KEY_MAX]; 2639d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN char daemon_cmd[PROPERTY_VALUE_MAX * 2]; 264dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project const char *ctrl_prop = "ctl.stop"; 265dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project const char *desired_status = "stopped"; 266dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 267a329b4296cab06ea0b6e95065d8eabb82d3fd76drepo sync char daemon_suffix[MAX_DAEMON_SUFFIX]; 268a329b4296cab06ea0b6e95065d8eabb82d3fd76drepo sync 269a329b4296cab06ea0b6e95065d8eabb82d3fd76drepo sync get_daemon_suffix(interface, daemon_suffix); 270a329b4296cab06ea0b6e95065d8eabb82d3fd76drepo sync 2719d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN snprintf(daemon_prop_name, sizeof(daemon_prop_name), "%s_%s", 2729d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN DAEMON_PROP_NAME, 273a329b4296cab06ea0b6e95065d8eabb82d3fd76drepo sync daemon_suffix); 2749d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN 275a329b4296cab06ea0b6e95065d8eabb82d3fd76drepo sync snprintf(daemon_cmd, sizeof(daemon_cmd), "%s_%s", DAEMON_NAME, daemon_suffix); 2769d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN 277dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Stop the daemon and wait until it's reported to be stopped */ 2789d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN property_set(ctrl_prop, daemon_cmd); 2799d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN if (wait_for_property(daemon_prop_name, desired_status, 5) < 0) { 280dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 281dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 282dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 283dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 284dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 285dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectchar *dhcp_get_errmsg() { 286dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return errmsg; 287dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 2889d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN 2899d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN/** 2909d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN * Run WiMAX dhcp renew service. 2919d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN * "wimax_renew" service shoud be included in init.rc. 2929d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN */ 2939d157870345fa18ee7e639a85f6bcc4afb50c648TK MUNint dhcp_do_request_renew(const char *interface, 2949d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN in_addr_t *ipaddr, 2959d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN in_addr_t *gateway, 296ed21633a5e81f7bb9688da98bc9ea9b08b6bce20tk.mun uint32_t *prefixLength, 2979d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN in_addr_t *dns1, 2989d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN in_addr_t *dns2, 2999d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN in_addr_t *server, 3009d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN uint32_t *lease) 3019d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN{ 3029d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN char result_prop_name[PROPERTY_KEY_MAX]; 3039d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN char prop_value[PROPERTY_VALUE_MAX] = {'\0'}; 3049d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN char daemon_cmd[PROPERTY_VALUE_MAX * 2]; 3059d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN const char *ctrl_prop = "ctl.start"; 3069d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN 307a329b4296cab06ea0b6e95065d8eabb82d3fd76drepo sync char daemon_suffix[MAX_DAEMON_SUFFIX]; 308a329b4296cab06ea0b6e95065d8eabb82d3fd76drepo sync 309a329b4296cab06ea0b6e95065d8eabb82d3fd76drepo sync get_daemon_suffix(interface, daemon_suffix); 310a329b4296cab06ea0b6e95065d8eabb82d3fd76drepo sync 3119d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN snprintf(result_prop_name, sizeof(result_prop_name), "%s.%s.result", 3129d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN DHCP_PROP_NAME_PREFIX, 3139d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN interface); 3149d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN 3159d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN /* Erase any previous setting of the dhcp result property */ 3169d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN property_set(result_prop_name, ""); 3179d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN 3189d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN /* Start the renew daemon and wait until it's ready */ 319a329b4296cab06ea0b6e95065d8eabb82d3fd76drepo sync snprintf(daemon_cmd, sizeof(daemon_cmd), "%s_%s:%s", DAEMON_NAME_RENEW, 320a329b4296cab06ea0b6e95065d8eabb82d3fd76drepo sync daemon_suffix, interface); 3219d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN memset(prop_value, '\0', PROPERTY_VALUE_MAX); 3229d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN property_set(ctrl_prop, daemon_cmd); 3239d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN 3249d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN /* Wait for the daemon to return a result */ 3259d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN if (wait_for_property(result_prop_name, NULL, 30) < 0) { 3269d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN snprintf(errmsg, sizeof(errmsg), "%s", "Timed out waiting for DHCP Renew to finish"); 3279d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN return -1; 3289d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN } 3299d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN 3309d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN if (!property_get(result_prop_name, prop_value, NULL)) { 3319d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN /* shouldn't ever happen, given the success of wait_for_property() */ 3329d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN snprintf(errmsg, sizeof(errmsg), "%s", "DHCP Renew result property was not set"); 3339d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN return -1; 3349d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN } 3359d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN if (strcmp(prop_value, "ok") == 0) { 336ed21633a5e81f7bb9688da98bc9ea9b08b6bce20tk.mun fill_ip_info(interface, ipaddr, gateway, prefixLength, dns1, dns2, server, lease); 3379d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN return 0; 3389d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN } else { 3399d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN snprintf(errmsg, sizeof(errmsg), "DHCP Renew result was %s", prop_value); 3409d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN return -1; 3419d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN } 3429d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN} 343