dhcp_utils.c revision bdaaec1ba0a7cf832ad7fe475a7c541ed9973e52
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]; 36dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 37dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 38dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Wait for a system property to be assigned a specified value. 39dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * If desired_value is NULL, then just wait for the property to 40dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * be created with any value. maxwait is the maximum amount of 41dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * time in seconds to wait before giving up. 42dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 43dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectstatic int wait_for_property(const char *name, const char *desired_value, int maxwait) 44dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 45dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char value[PROPERTY_VALUE_MAX] = {'\0'}; 46b1723b68921512f26562384898b9600f8f11d25eIrfan Sheriff int maxnaps = (maxwait * 1000) / NAP_TIME; 47dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 48dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (maxnaps < 1) { 49dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project maxnaps = 1; 50dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 51dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 52dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project while (maxnaps-- > 0) { 53b1723b68921512f26562384898b9600f8f11d25eIrfan Sheriff usleep(NAP_TIME * 1000); 54dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (property_get(name, value, NULL)) { 55dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (desired_value == NULL || 56dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project strcmp(value, desired_value) == 0) { 57dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 58dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 59dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 60dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 61dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; /* failure */ 62dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 63dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 64faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwaltstatic int fill_ip_info(const char *interface, 65faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt char *ipaddr, 66faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt char *gateway, 67faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt uint32_t *prefixLength, 68faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt char *dns1, 69faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt char *dns2, 70faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt char *server, 71dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project uint32_t *lease) 72dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 73dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char prop_name[PROPERTY_KEY_MAX]; 74dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char prop_value[PROPERTY_VALUE_MAX]; 75dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 76dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(prop_name, sizeof(prop_name), "%s.%s.ipaddress", DHCP_PROP_NAME_PREFIX, interface); 77faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt property_get(prop_name, ipaddr, NULL); 78faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt 79dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(prop_name, sizeof(prop_name), "%s.%s.gateway", DHCP_PROP_NAME_PREFIX, interface); 80faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt property_get(prop_name, gateway, NULL); 81faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt 82bdaaec1ba0a7cf832ad7fe475a7c541ed9973e52Irfan Sheriff snprintf(prop_name, sizeof(prop_name), "%s.%s.server", DHCP_PROP_NAME_PREFIX, interface); 83bdaaec1ba0a7cf832ad7fe475a7c541ed9973e52Irfan Sheriff property_get(prop_name, server, NULL); 84bdaaec1ba0a7cf832ad7fe475a7c541ed9973e52Irfan Sheriff 85bdaaec1ba0a7cf832ad7fe475a7c541ed9973e52Irfan Sheriff //TODO: Handle IPv6 when we change system property usage 86bdaaec1ba0a7cf832ad7fe475a7c541ed9973e52Irfan Sheriff if (strcmp(gateway, "0.0.0.0") == 0) { 87bdaaec1ba0a7cf832ad7fe475a7c541ed9973e52Irfan Sheriff //DHCP server is our best bet as gateway 88bdaaec1ba0a7cf832ad7fe475a7c541ed9973e52Irfan Sheriff strncpy(gateway, server, PROPERTY_VALUE_MAX); 89bdaaec1ba0a7cf832ad7fe475a7c541ed9973e52Irfan Sheriff } 90bdaaec1ba0a7cf832ad7fe475a7c541ed9973e52Irfan Sheriff 91dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(prop_name, sizeof(prop_name), "%s.%s.mask", DHCP_PROP_NAME_PREFIX, interface); 92faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt if (property_get(prop_name, prop_value, NULL)) { 93faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt int p; 94faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt // this conversion is v4 only, but this dhcp client is v4 only anyway 95faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt in_addr_t mask = ntohl(inet_addr(prop_value)); 96faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt // Check netmask is a valid IP address. ntohl gives NONE response (all 1's) for 97faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt // non 255.255.255.255 inputs. if we get that value check if it is legit.. 98faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt if (mask == INADDR_NONE && strcmp(prop_value, "255.255.255.255") != 0) { 99faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt snprintf(errmsg, sizeof(errmsg), "DHCP gave invalid net mask %s", prop_value); 100faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt return -1; 101faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt } 102faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt for (p = 0; p < 32; p++) { 103faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt if (mask == 0) break; 104faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt // check for non-contiguous netmask, e.g., 255.254.255.0 105faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt if ((mask & 0x80000000) == 0) { 106faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt snprintf(errmsg, sizeof(errmsg), "DHCP gave invalid net mask %s", prop_value); 107faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt return -1; 108faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt } 109faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt mask = mask << 1; 110faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt } 111faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt *prefixLength = p; 112dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 113dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(prop_name, sizeof(prop_name), "%s.%s.dns1", DHCP_PROP_NAME_PREFIX, interface); 114faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt property_get(prop_name, dns1, NULL); 115faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt 116dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(prop_name, sizeof(prop_name), "%s.%s.dns2", DHCP_PROP_NAME_PREFIX, interface); 117faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt property_get(prop_name, dns2, NULL); 118faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt 119dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(prop_name, sizeof(prop_name), "%s.%s.leasetime", DHCP_PROP_NAME_PREFIX, interface); 120dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (property_get(prop_name, prop_value, NULL)) { 121dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project *lease = atol(prop_value); 122dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 123faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt return 0; 124dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 125dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 1268c85a00db6da092ec3766facd49132fa4fc319a1Szymon Jakubczakstatic const char *ipaddr_to_string(in_addr_t addr) 1278c85a00db6da092ec3766facd49132fa4fc319a1Szymon Jakubczak{ 1288c85a00db6da092ec3766facd49132fa4fc319a1Szymon Jakubczak struct in_addr in_addr; 1298c85a00db6da092ec3766facd49132fa4fc319a1Szymon Jakubczak 1308c85a00db6da092ec3766facd49132fa4fc319a1Szymon Jakubczak in_addr.s_addr = addr; 1318c85a00db6da092ec3766facd49132fa4fc319a1Szymon Jakubczak return inet_ntoa(in_addr); 1328c85a00db6da092ec3766facd49132fa4fc319a1Szymon Jakubczak} 1338c85a00db6da092ec3766facd49132fa4fc319a1Szymon Jakubczak 134dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/* 135dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Start the dhcp client daemon, and wait for it to finish 136dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * configuring the interface. 137dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 138dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint dhcp_do_request(const char *interface, 139faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt char *ipaddr, 140faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt char *gateway, 141faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt uint32_t *prefixLength, 142faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt char *dns1, 143faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt char *dns2, 144faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt char *server, 145dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project uint32_t *lease) 146dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 147dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char result_prop_name[PROPERTY_KEY_MAX]; 1489d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN char daemon_prop_name[PROPERTY_KEY_MAX]; 149dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char prop_value[PROPERTY_VALUE_MAX] = {'\0'}; 1509363b7d5da7e17842432251384f8dc46902ac323Dmitry Shmidt char daemon_cmd[PROPERTY_VALUE_MAX * 2]; 151dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project const char *ctrl_prop = "ctl.start"; 152dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project const char *desired_status = "running"; 153dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 154dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(result_prop_name, sizeof(result_prop_name), "%s.%s.result", 155dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project DHCP_PROP_NAME_PREFIX, 156dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project interface); 1579d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN 1589d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN snprintf(daemon_prop_name, sizeof(daemon_prop_name), "%s_%s", 1599d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN DAEMON_PROP_NAME, 1609d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN interface); 1619d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN 162dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Erase any previous setting of the dhcp result property */ 163dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project property_set(result_prop_name, ""); 164dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 165dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Start the daemon and wait until it's ready */ 1669363b7d5da7e17842432251384f8dc46902ac323Dmitry Shmidt if (property_get(HOSTNAME_PROP_NAME, prop_value, NULL) && (prop_value[0] != '\0')) 1679d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN snprintf(daemon_cmd, sizeof(daemon_cmd), "%s_%s:-h %s %s", DAEMON_NAME, interface, 1689363b7d5da7e17842432251384f8dc46902ac323Dmitry Shmidt prop_value, interface); 1699363b7d5da7e17842432251384f8dc46902ac323Dmitry Shmidt else 1709d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN snprintf(daemon_cmd, sizeof(daemon_cmd), "%s_%s:%s", DAEMON_NAME, interface, interface); 1719363b7d5da7e17842432251384f8dc46902ac323Dmitry Shmidt memset(prop_value, '\0', PROPERTY_VALUE_MAX); 1729363b7d5da7e17842432251384f8dc46902ac323Dmitry Shmidt property_set(ctrl_prop, daemon_cmd); 1739d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN if (wait_for_property(daemon_prop_name, desired_status, 10) < 0) { 174dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(errmsg, sizeof(errmsg), "%s", "Timed out waiting for dhcpcd to start"); 175dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 176dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 177dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 178dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Wait for the daemon to return a result */ 179dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (wait_for_property(result_prop_name, NULL, 30) < 0) { 180dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(errmsg, sizeof(errmsg), "%s", "Timed out waiting for DHCP to finish"); 181dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 182dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 183dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 184dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (!property_get(result_prop_name, prop_value, NULL)) { 185dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* shouldn't ever happen, given the success of wait_for_property() */ 186dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(errmsg, sizeof(errmsg), "%s", "DHCP result property was not set"); 187dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 188dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 189dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project if (strcmp(prop_value, "ok") == 0) { 1908c85a00db6da092ec3766facd49132fa4fc319a1Szymon Jakubczak char dns_prop_name[PROPERTY_KEY_MAX]; 191faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt if (fill_ip_info(interface, ipaddr, gateway, prefixLength, dns1, dns2, server, lease) 192faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt == -1) { 193faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt return -1; 194faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt } 195faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt 196faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt /* copy dns data to system properties - TODO - remove this after we have async 197faab26d542740f03cbe12e44f6af1f97e8e7c12eRobert Greenwalt * notification of renewal's */ 1988c85a00db6da092ec3766facd49132fa4fc319a1Szymon Jakubczak snprintf(dns_prop_name, sizeof(dns_prop_name), "net.%s.dns1", interface); 1998c85a00db6da092ec3766facd49132fa4fc319a1Szymon Jakubczak property_set(dns_prop_name, *dns1 ? ipaddr_to_string(*dns1) : ""); 2008c85a00db6da092ec3766facd49132fa4fc319a1Szymon Jakubczak snprintf(dns_prop_name, sizeof(dns_prop_name), "net.%s.dns2", interface); 2018c85a00db6da092ec3766facd49132fa4fc319a1Szymon Jakubczak property_set(dns_prop_name, *dns2 ? ipaddr_to_string(*dns2) : ""); 202dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 203dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } else { 204dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(errmsg, sizeof(errmsg), "DHCP result was %s", prop_value); 205dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 206dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 207dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 208dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 209dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/** 210dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Stop the DHCP client daemon. 211dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 212dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint dhcp_stop(const char *interface) 213dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 214dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project char result_prop_name[PROPERTY_KEY_MAX]; 2159d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN char daemon_prop_name[PROPERTY_KEY_MAX]; 2169d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN char daemon_cmd[PROPERTY_VALUE_MAX * 2]; 217dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project const char *ctrl_prop = "ctl.stop"; 218dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project const char *desired_status = "stopped"; 219dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 220dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project snprintf(result_prop_name, sizeof(result_prop_name), "%s.%s.result", 221dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project DHCP_PROP_NAME_PREFIX, 222dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project interface); 2239d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN 2249d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN snprintf(daemon_prop_name, sizeof(daemon_prop_name), "%s_%s", 2259d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN DAEMON_PROP_NAME, 2269d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN interface); 2279d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN 2289d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN snprintf(daemon_cmd, sizeof(daemon_cmd), "%s_%s", DAEMON_NAME, interface); 2299d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN 230dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Stop the daemon and wait until it's reported to be stopped */ 2319d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN property_set(ctrl_prop, daemon_cmd); 2329d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN if (wait_for_property(daemon_prop_name, desired_status, 5) < 0) { 233dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 234dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 235dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project property_set(result_prop_name, "failed"); 236dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 237dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 238dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 239dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project/** 240dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project * Release the current DHCP client lease. 241dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project */ 242dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectint dhcp_release_lease(const char *interface) 243dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project{ 2449d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN char daemon_prop_name[PROPERTY_KEY_MAX]; 2459d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN char daemon_cmd[PROPERTY_VALUE_MAX * 2]; 246dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project const char *ctrl_prop = "ctl.stop"; 247dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project const char *desired_status = "stopped"; 248dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 2499d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN snprintf(daemon_prop_name, sizeof(daemon_prop_name), "%s_%s", 2509d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN DAEMON_PROP_NAME, 2519d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN interface); 2529d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN 2539d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN snprintf(daemon_cmd, sizeof(daemon_cmd), "%s_%s", DAEMON_NAME, interface); 2549d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN 255dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project /* Stop the daemon and wait until it's reported to be stopped */ 2569d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN property_set(ctrl_prop, daemon_cmd); 2579d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN if (wait_for_property(daemon_prop_name, desired_status, 5) < 0) { 258dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return -1; 259dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project } 260dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return 0; 261dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 262dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project 263dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Projectchar *dhcp_get_errmsg() { 264dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project return errmsg; 265dd7bc3319deb2b77c5d07a51b7d6cd7e11b5beb0The Android Open Source Project} 2669d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN 2679d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN/** 2689d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN * Run WiMAX dhcp renew service. 2699d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN * "wimax_renew" service shoud be included in init.rc. 2709d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN */ 2719d157870345fa18ee7e639a85f6bcc4afb50c648TK MUNint dhcp_do_request_renew(const char *interface, 2729d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN in_addr_t *ipaddr, 2739d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN in_addr_t *gateway, 2749d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN in_addr_t *mask, 2759d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN in_addr_t *dns1, 2769d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN in_addr_t *dns2, 2779d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN in_addr_t *server, 2789d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN uint32_t *lease) 2799d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN{ 2809d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN char result_prop_name[PROPERTY_KEY_MAX]; 2819d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN char prop_value[PROPERTY_VALUE_MAX] = {'\0'}; 2829d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN char daemon_cmd[PROPERTY_VALUE_MAX * 2]; 2839d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN const char *ctrl_prop = "ctl.start"; 2849d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN 2859d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN snprintf(result_prop_name, sizeof(result_prop_name), "%s.%s.result", 2869d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN DHCP_PROP_NAME_PREFIX, 2879d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN interface); 2889d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN 2899d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN /* Erase any previous setting of the dhcp result property */ 2909d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN property_set(result_prop_name, ""); 2919d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN 2929d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN /* Start the renew daemon and wait until it's ready */ 2939d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN snprintf(daemon_cmd, sizeof(daemon_cmd), "%s_%s:%s", DAEMON_NAME_RENEW, interface, interface); 2949d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN memset(prop_value, '\0', PROPERTY_VALUE_MAX); 2959d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN property_set(ctrl_prop, daemon_cmd); 2969d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN 2979d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN /* Wait for the daemon to return a result */ 2989d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN if (wait_for_property(result_prop_name, NULL, 30) < 0) { 2999d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN snprintf(errmsg, sizeof(errmsg), "%s", "Timed out waiting for DHCP Renew to finish"); 3009d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN return -1; 3019d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN } 3029d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN 3039d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN if (!property_get(result_prop_name, prop_value, NULL)) { 3049d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN /* shouldn't ever happen, given the success of wait_for_property() */ 3059d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN snprintf(errmsg, sizeof(errmsg), "%s", "DHCP Renew result property was not set"); 3069d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN return -1; 3079d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN } 3089d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN if (strcmp(prop_value, "ok") == 0) { 3099d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN fill_ip_info(interface, ipaddr, gateway, mask, dns1, dns2, server, lease); 3109d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN return 0; 3119d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN } else { 3129d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN snprintf(errmsg, sizeof(errmsg), "DHCP Renew result was %s", prop_value); 3139d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN return -1; 3149d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN } 3159d157870345fa18ee7e639a85f6bcc4afb50c648TK MUN} 316