1/* 2 * Copyright (C) 2008 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#include <stdio.h> 18#include <stdlib.h> 19#include <errno.h> 20 21#define LOG_TAG "Netd" 22 23#include <cutils/log.h> 24 25#include <sysutils/NetlinkEvent.h> 26#include "NetlinkHandler.h" 27#include "NetlinkManager.h" 28#include "ResponseCode.h" 29 30NetlinkHandler::NetlinkHandler(NetlinkManager *nm, int listenerSocket) : 31 NetlinkListener(listenerSocket) { 32 mNm = nm; 33} 34 35NetlinkHandler::~NetlinkHandler() { 36} 37 38int NetlinkHandler::start() { 39 return this->startListener(); 40} 41 42int NetlinkHandler::stop() { 43 return this->stopListener(); 44} 45 46void NetlinkHandler::onEvent(NetlinkEvent *evt) { 47 const char *subsys = evt->getSubsystem(); 48 if (!subsys) { 49 LOGW("No subsystem found in netlink event"); 50 return; 51 } 52 if (!strcmp(subsys, "net")) { 53 int action = evt->getAction(); 54 if (action == evt->NlActionAdd) { 55 const char *iface = evt->findParam("INTERFACE"); 56 notifyInterfaceAdded(iface); 57 } else if (action == evt->NlActionRemove) { 58 const char *iface = evt->findParam("INTERFACE"); 59 notifyInterfaceRemoved(iface); 60 } else if (action == evt->NlActionChange) { 61 evt->dump(); 62 const char *iface = evt->findParam("INTERFACE"); 63 notifyInterfaceChanged("nana", true); 64 } 65 } 66} 67 68void NetlinkHandler::notifyInterfaceAdded(const char *name) { 69 char msg[255]; 70 snprintf(msg, sizeof(msg), "Iface added %s", name); 71 72 mNm->getBroadcaster()->sendBroadcast(ResponseCode::InterfaceChange, 73 msg, false); 74} 75 76void NetlinkHandler::notifyInterfaceRemoved(const char *name) { 77 char msg[255]; 78 snprintf(msg, sizeof(msg), "Iface removed %s", name); 79 80 mNm->getBroadcaster()->sendBroadcast(ResponseCode::InterfaceChange, 81 msg, false); 82} 83 84void NetlinkHandler::notifyInterfaceChanged(const char *name, bool isUp) { 85 char msg[255]; 86 snprintf(msg, sizeof(msg), "Iface is %s %s", (isUp ? "up" : "down"), name); 87 88 mNm->getBroadcaster()->sendBroadcast(ResponseCode::InterfaceChange, 89 msg, false); 90} 91