blob: 6621a9aa52425ae2131a5fb02d0fc6b9f1fa6dc7 [file] [log] [blame]
/*
* Copyright (C) 2008 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#define LOG_TAG "Netd"
#include <cutils/log.h>
#include <sysutils/NetlinkEvent.h>
#include "NetlinkHandler.h"
#include "NetlinkManager.h"
#include "ResponseCode.h"
NetlinkHandler::NetlinkHandler(NetlinkManager *nm, int listenerSocket,
int format) :
NetlinkListener(listenerSocket, format) {
mNm = nm;
}
NetlinkHandler::~NetlinkHandler() {
}
int NetlinkHandler::start() {
return this->startListener();
}
int NetlinkHandler::stop() {
return this->stopListener();
}
void NetlinkHandler::onEvent(NetlinkEvent *evt) {
const char *subsys = evt->getSubsystem();
if (!subsys) {
ALOGW("No subsystem found in netlink event");
return;
}
if (!strcmp(subsys, "net")) {
int action = evt->getAction();
const char *iface = evt->findParam("INTERFACE");
if (action == evt->NlActionAdd) {
notifyInterfaceAdded(iface);
} else if (action == evt->NlActionRemove) {
notifyInterfaceRemoved(iface);
} else if (action == evt->NlActionChange) {
evt->dump();
notifyInterfaceChanged("nana", true);
} else if (action == evt->NlActionLinkUp) {
notifyInterfaceLinkChanged(iface, true);
} else if (action == evt->NlActionLinkDown) {
notifyInterfaceLinkChanged(iface, false);
}
} else if (!strcmp(subsys, "qlog")) {
const char *alertName = evt->findParam("ALERT_NAME");
const char *iface = evt->findParam("INTERFACE");
notifyQuotaLimitReached(alertName, iface);
} else if (!strcmp(subsys, "xt_idletimer")) {
int action = evt->getAction();
const char *label = evt->findParam("LABEL");
const char *state = evt->findParam("STATE");
// if no LABEL, use INTERFACE instead
if (label == NULL) {
label = evt->findParam("INTERFACE");
}
if (state)
notifyInterfaceClassActivity(label, !strcmp("active", state));
#if !LOG_NDEBUG
} else if (strcmp(subsys, "platform") && strcmp(subsys, "backlight")) {
/* It is not a VSYNC or a backlight event */
ALOGV("unexpected event from subsystem %s", subsys);
#endif
}
}
void NetlinkHandler::notifyInterfaceAdded(const char *name) {
char msg[255];
snprintf(msg, sizeof(msg), "Iface added %s", name);
mNm->getBroadcaster()->sendBroadcast(ResponseCode::InterfaceChange,
msg, false);
}
void NetlinkHandler::notifyInterfaceRemoved(const char *name) {
char msg[255];
snprintf(msg, sizeof(msg), "Iface removed %s", name);
mNm->getBroadcaster()->sendBroadcast(ResponseCode::InterfaceChange,
msg, false);
}
void NetlinkHandler::notifyInterfaceChanged(const char *name, bool isUp) {
char msg[255];
snprintf(msg, sizeof(msg), "Iface changed %s %s", name,
(isUp ? "up" : "down"));
mNm->getBroadcaster()->sendBroadcast(ResponseCode::InterfaceChange,
msg, false);
}
void NetlinkHandler::notifyInterfaceLinkChanged(const char *name, bool isUp) {
char msg[255];
snprintf(msg, sizeof(msg), "Iface linkstate %s %s", name,
(isUp ? "up" : "down"));
mNm->getBroadcaster()->sendBroadcast(ResponseCode::InterfaceChange,
msg, false);
}
void NetlinkHandler::notifyQuotaLimitReached(const char *name, const char *iface) {
char msg[255];
snprintf(msg, sizeof(msg), "limit alert %s %s", name, iface);
mNm->getBroadcaster()->sendBroadcast(ResponseCode::BandwidthControl,
msg, false);
}
void NetlinkHandler::notifyInterfaceClassActivity(const char *name,
bool isActive) {
char msg[255];
snprintf(msg, sizeof(msg), "IfaceClass %s %s",
isActive ? "active" : "idle", name);
ALOGV("Broadcasting interface activity msg: %s", msg);
mNm->getBroadcaster()->sendBroadcast(
ResponseCode::InterfaceClassActivity, msg, false);
}