413 lines
12 KiB
C++
413 lines
12 KiB
C++
/*
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* Copyright (C) 2008 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#define LOG_TAG "WifiController"
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#include <cutils/log.h>
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#include "Supplicant.h"
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#include "WifiController.h"
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#include "WifiScanner.h"
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#include "NetworkManager.h"
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#include "ErrorCode.h"
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#include "WifiNetwork.h"
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#include "ISupplicantEventHandler.h"
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#include "SupplicantState.h"
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#include "SupplicantStatus.h"
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#include "SupplicantAssociatingEvent.h"
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#include "SupplicantAssociatedEvent.h"
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#include "SupplicantConnectedEvent.h"
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#include "SupplicantScanResultsEvent.h"
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#include "SupplicantStateChangeEvent.h"
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#include "SupplicantConnectionTimeoutEvent.h"
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#include "SupplicantDisconnectedEvent.h"
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WifiController::WifiController(PropertyManager *mPropMngr,
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IControllerHandler *handlers,
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char *modpath, char *modname, char *modargs) :
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Controller("WIFI", mPropMngr, handlers) {
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strncpy(mModulePath, modpath, sizeof(mModulePath));
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strncpy(mModuleName, modname, sizeof(mModuleName));
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strncpy(mModuleArgs, modargs, sizeof(mModuleArgs));
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mLatestScanResults = new ScanResultCollection();
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pthread_mutex_init(&mLatestScanResultsLock, NULL);
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mSupplicant = new Supplicant(this, this);
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mScanner = new WifiScanner(mSupplicant, 10);
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mCurrentScanMode = 0;
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mEnabled = false;
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mSupplicantState = SupplicantState::UNKNOWN;
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}
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int WifiController::start() {
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mPropMngr->registerProperty("wifi.enabled", this);
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return 0;
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}
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int WifiController::stop() {
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mPropMngr->unregisterProperty("wifi.enabled");
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return 0;
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}
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int WifiController::enable() {
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if (!isPoweredUp()) {
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LOGI("Powering up");
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sendStatusBroadcast("Powering up WiFi hardware");
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if (powerUp()) {
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LOGE("Powerup failed (%s)", strerror(errno));
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return -1;
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}
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}
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if (mModuleName[0] != '\0' && !isKernelModuleLoaded(mModuleName)) {
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LOGI("Loading driver");
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sendStatusBroadcast("Loading WiFi driver");
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if (loadKernelModule(mModulePath, mModuleArgs)) {
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LOGE("Kernel module load failed (%s)", strerror(errno));
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goto out_powerdown;
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}
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}
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if (!isFirmwareLoaded()) {
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LOGI("Loading firmware");
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sendStatusBroadcast("Loading WiFI firmware");
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if (loadFirmware()) {
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LOGE("Firmware load failed (%s)", strerror(errno));
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goto out_powerdown;
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}
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}
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if (!mSupplicant->isStarted()) {
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LOGI("Starting WPA Supplicant");
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sendStatusBroadcast("Starting WPA Supplicant");
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if (mSupplicant->start()) {
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LOGE("Supplicant start failed (%s)", strerror(errno));
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goto out_unloadmodule;
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}
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}
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if (Controller::bindInterface(mSupplicant->getInterfaceName())) {
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LOGE("Error binding interface (%s)", strerror(errno));
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goto out_unloadmodule;
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}
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if (mSupplicant->refreshNetworkList())
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LOGW("Error getting list of networks (%s)", strerror(errno));
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mPropMngr->registerProperty("wifi.supplicant.state", this);
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mPropMngr->registerProperty("wifi.scanmode", this);
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mPropMngr->registerProperty("wifi.interface", this);
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LOGI("Enabled successfully");
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return 0;
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out_unloadmodule:
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if (mModuleName[0] != '\0' && !isKernelModuleLoaded(mModuleName)) {
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if (unloadKernelModule(mModuleName)) {
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LOGE("Unable to unload module after failure!");
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}
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}
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out_powerdown:
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if (powerDown()) {
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LOGE("Unable to powerdown after failure!");
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}
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return -1;
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}
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void WifiController::sendStatusBroadcast(const char *msg) {
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NetworkManager::Instance()->
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getBroadcaster()->
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sendBroadcast(ErrorCode::UnsolicitedInformational, msg, false);
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}
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int WifiController::disable() {
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mPropMngr->unregisterProperty("wifi.scanmode");
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mPropMngr->unregisterProperty("wifi.supplicant.state");
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mPropMngr->unregisterProperty("wifi.scanmode");
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if (mSupplicant->isStarted()) {
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sendStatusBroadcast("Stopping WPA Supplicant");
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if (mSupplicant->stop()) {
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LOGE("Supplicant stop failed (%s)", strerror(errno));
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return -1;
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}
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} else
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LOGW("disable(): Supplicant not running?");
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if (mModuleName[0] != '\0' && isKernelModuleLoaded(mModuleName)) {
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sendStatusBroadcast("Unloading WiFi driver");
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if (unloadKernelModule(mModuleName)) {
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LOGE("Unable to unload module (%s)", strerror(errno));
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return -1;
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}
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}
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if (isPoweredUp()) {
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sendStatusBroadcast("Powering down WiFi hardware");
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if (powerDown()) {
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LOGE("Powerdown failed (%s)", strerror(errno));
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return -1;
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}
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}
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return 0;
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}
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int WifiController::loadFirmware() {
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return 0;
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}
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int WifiController::setScanMode(uint32_t mode) {
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int rc = 0;
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if (mCurrentScanMode == mode)
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return 0;
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if (!(mode & SCAN_ENABLE_MASK)) {
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if (mCurrentScanMode & SCAN_REPEAT_MASK)
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mScanner->stop();
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} else if (mode & SCAN_REPEAT_MASK)
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rc = mScanner->start(mode & SCAN_ACTIVE_MASK);
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else
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rc = mSupplicant->triggerScan(mode & SCAN_ACTIVE_MASK);
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mCurrentScanMode = mode;
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return rc;
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}
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WifiNetwork *WifiController::createNetwork() {
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WifiNetwork *wn = mSupplicant->createNetwork();
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return wn;
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}
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int WifiController::removeNetwork(int networkId) {
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WifiNetwork *wn = mSupplicant->lookupNetwork(networkId);
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if (!wn)
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return -1;
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return mSupplicant->removeNetwork(wn);
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}
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ScanResultCollection *WifiController::createScanResults() {
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ScanResultCollection *d = new ScanResultCollection();
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ScanResultCollection::iterator i;
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pthread_mutex_lock(&mLatestScanResultsLock);
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for (i = mLatestScanResults->begin(); i != mLatestScanResults->end(); ++i)
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d->push_back((*i)->clone());
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pthread_mutex_unlock(&mLatestScanResultsLock);
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return d;
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}
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WifiNetworkCollection *WifiController::createNetworkList() {
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return mSupplicant->createNetworkList();
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}
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int WifiController::set(const char *name, const char *value) {
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int rc;
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if (!strcmp(name, "wifi.enabled")) {
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int en = atoi(value);
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if (en == mEnabled)
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return 0;
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rc = (en ? enable() : disable());
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if (!rc)
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mEnabled = en;
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} else if (!strcmp(name, "wifi.interface")) {
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errno = EROFS;
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return -1;
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} else if (!strcmp(name, "wifi.scanmode"))
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return setScanMode((uint32_t) strtoul(value, NULL, 0));
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else if (!strcmp(name, "wifi.supplicant.state")) {
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errno = EROFS;
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return -1;
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} else
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return Controller::set(name, value);
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return rc;
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}
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const char *WifiController::get(const char *name, char *buffer, size_t maxsize) {
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if (!strcmp(name, "wifi.enabled"))
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snprintf(buffer, maxsize, "%d", mEnabled);
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else if (!strcmp(name, "wifi.interface")) {
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snprintf(buffer, maxsize, "%s",
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(getBoundInterface() ? getBoundInterface() : "none"));
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} else if (!strcmp(name, "wifi.scanmode"))
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snprintf(buffer, maxsize, "0x%.8x", mCurrentScanMode);
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else if (!strcmp(name, "wifi.supplicant.state"))
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return SupplicantState::toString(mSupplicantState, buffer, maxsize);
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else
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return Controller::get(name, buffer, maxsize);
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return buffer;
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}
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void WifiController::onAssociatingEvent(SupplicantAssociatingEvent *evt) {
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LOGD("onAssociatingEvent(%s, %s, %d)",
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(evt->getBssid() ? evt->getBssid() : "n/a"),
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(evt->getSsid() ? evt->getSsid() : "n/a"),
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evt->getFreq());
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}
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void WifiController::onAssociatedEvent(SupplicantAssociatedEvent *evt) {
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LOGD("onAssociatedEvent(%s)", evt->getBssid());
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}
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void WifiController::onConnectedEvent(SupplicantConnectedEvent *evt) {
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LOGD("onConnectedEvent(%s, %d)", evt->getBssid(), evt->getReassociated());
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SupplicantStatus *ss = mSupplicant->getStatus();
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WifiNetwork *wn;
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if (ss->getWpaState() != SupplicantState::COMPLETED) {
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char tmp[32];
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LOGW("onConnected() with SupplicantState = %s!",
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SupplicantState::toString(ss->getWpaState(), tmp,
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sizeof(tmp)));
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return;
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}
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if (ss->getId() == -1) {
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LOGW("onConnected() with id = -1!");
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return;
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}
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if (!(wn = mSupplicant->lookupNetwork(ss->getId()))) {
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LOGW("Error looking up connected network id %d (%s)",
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ss->getId(), strerror(errno));
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return;
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}
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delete ss;
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mHandlers->onInterfaceConnected(this, wn->getIfaceCfg());
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}
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void WifiController::onScanResultsEvent(SupplicantScanResultsEvent *evt) {
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char *reply;
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if (!(reply = (char *) malloc(4096))) {
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LOGE("Out of memory");
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return;
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}
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size_t len = 4096;
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if (mSupplicant->sendCommand("SCAN_RESULTS", reply, &len)) {
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LOGW("onScanResultsEvent: Error getting scan results (%s)",
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strerror(errno));
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free(reply);
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return;
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}
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pthread_mutex_lock(&mLatestScanResultsLock);
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if (!mLatestScanResults->empty()) {
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ScanResultCollection::iterator i;
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for (i = mLatestScanResults->begin();
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i !=mLatestScanResults->end(); ++i) {
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delete *i;
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}
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mLatestScanResults->clear();
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}
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char *linep;
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char *linep_next = NULL;
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if (!strtok_r(reply, "\n", &linep_next)) {
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free(reply);
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pthread_mutex_unlock(&mLatestScanResultsLock);
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return;
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}
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while((linep = strtok_r(NULL, "\n", &linep_next)))
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mLatestScanResults->push_back(new ScanResult(linep));
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char *tmp;
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asprintf(&tmp, "Scan results ready (%d)", mLatestScanResults->size());
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NetworkManager::Instance()->getBroadcaster()->
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sendBroadcast(ErrorCode::UnsolicitedInformational, tmp, false);
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free(tmp);
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pthread_mutex_unlock(&mLatestScanResultsLock);
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free(reply);
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}
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void WifiController::onStateChangeEvent(SupplicantStateChangeEvent *evt) {
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char tmp[32];
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char tmp2[32];
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LOGD("onStateChangeEvent(%s -> %s)",
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SupplicantState::toString(mSupplicantState, tmp, sizeof(tmp)),
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SupplicantState::toString(evt->getState(), tmp2, sizeof(tmp2)));
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mSupplicantState = evt->getState();
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}
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void WifiController::onConnectionTimeoutEvent(SupplicantConnectionTimeoutEvent *evt) {
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LOGD("onConnectionTimeoutEvent(%s)", evt->getBssid());
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}
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void WifiController::onDisconnectedEvent(SupplicantDisconnectedEvent *evt) {
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mHandlers->onInterfaceDisconnected(this, getBoundInterface());
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}
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#if 0
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void WifiController::onTerminatingEvent(SupplicantEvent *evt) {
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LOGD("onTerminatingEvent(%s)", evt->getEvent());
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}
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void WifiController::onPasswordChangedEvent(SupplicantEvent *evt) {
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LOGD("onPasswordChangedEvent(%s)", evt->getEvent());
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}
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void WifiController::onEapNotificationEvent(SupplicantEvent *evt) {
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LOGD("onEapNotificationEvent(%s)", evt->getEvent());
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}
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void WifiController::onEapStartedEvent(SupplicantEvent *evt) {
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LOGD("onEapStartedEvent(%s)", evt->getEvent());
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}
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void WifiController::onEapMethodEvent(SupplicantEvent *evt) {
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LOGD("onEapMethodEvent(%s)", evt->getEvent());
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}
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void WifiController::onEapSuccessEvent(SupplicantEvent *evt) {
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LOGD("onEapSuccessEvent(%s)", evt->getEvent());
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}
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void WifiController::onEapFailureEvent(SupplicantEvent *evt) {
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LOGD("onEapFailureEvent(%s)", evt->getEvent());
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}
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void WifiController::onLinkSpeedEvent(SupplicantEvent *evt) {
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LOGD("onLinkSpeedEvent(%s)", evt->getEvent());
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}
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void WifiController::onDriverStateEvent(SupplicantEvent *evt) {
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LOGD("onDriverStateEvent(%s)", evt->getEvent());
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}
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#endif
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