ifaces, NetworkState state) {
final String baseIface = state.linkProperties.getInterfaceName();
if (baseIface != null) {
ifaces.add(baseIface);
}
for (LinkProperties stackedLink : state.linkProperties.getStackedLinks()) {
final String stackedIface = stackedLink.getInterfaceName();
if (stackedIface != null) {
ifaces.add(stackedIface);
}
}
}
/**
* Examine all currently active subscriptions from
* {@link SubscriptionManager#getActiveSubscriptionIdList()} and update
* internal data structures.
*
* Callers must not hold any locks when this method called.
*/
void updateSubscriptions() {
if (LOGV) Slog.v(TAG, "updateSubscriptions()");
Trace.traceBegin(TRACE_TAG_NETWORK, "updateSubscriptions");
final TelephonyManager tm = mContext.getSystemService(TelephonyManager.class);
final SubscriptionManager sm = mContext.getSystemService(SubscriptionManager.class);
final int[] subIds = ArrayUtils.defeatNullable(sm.getActiveSubscriptionIdList());
final String[] mergedSubscriberIds = ArrayUtils.defeatNullable(tm.getMergedSubscriberIds());
final SparseArray subIdToSubscriberId = new SparseArray<>(subIds.length);
for (int subId : subIds) {
final String subscriberId = tm.getSubscriberId(subId);
if (!TextUtils.isEmpty(subscriberId)) {
subIdToSubscriberId.put(subId, subscriberId);
} else {
Slog.wtf(TAG, "Missing subscriberId for subId " + subId);
}
}
synchronized (mNetworkPoliciesSecondLock) {
mSubIdToSubscriberId.clear();
for (int i = 0; i < subIdToSubscriberId.size(); i++) {
mSubIdToSubscriberId.put(subIdToSubscriberId.keyAt(i),
subIdToSubscriberId.valueAt(i));
}
mMergedSubscriberIds = mergedSubscriberIds;
}
Trace.traceEnd(TRACE_TAG_NETWORK);
}
/**
* Examine all connected {@link NetworkState}, looking for
* {@link NetworkPolicy} that need to be enforced. When matches found, set
* remaining quota based on usage cycle and historical stats.
*/
void updateNetworkRulesNL() {
if (LOGV) Slog.v(TAG, "updateNetworkRulesNL()");
Trace.traceBegin(TRACE_TAG_NETWORK, "updateNetworkRulesNL");
final NetworkState[] states;
try {
states = defeatNullable(mConnManager.getAllNetworkState());
} catch (RemoteException e) {
// ignored; service lives in system_server
return;
}
// First, generate identities of all connected networks so we can
// quickly compare them against all defined policies below.
mNetIdToSubId.clear();
final ArrayMap identified = new ArrayMap<>();
for (NetworkState state : states) {
if (state.network != null) {
mNetIdToSubId.put(state.network.netId, parseSubId(state));
}
if (state.networkInfo != null && state.networkInfo.isConnected()) {
final NetworkIdentity ident = NetworkIdentity.buildNetworkIdentity(mContext, state,
true);
identified.put(state, ident);
}
}
final ArraySet newMeteredIfaces = new ArraySet<>();
long lowestRule = Long.MAX_VALUE;
// For every well-defined policy, compute remaining data based on
// current cycle and historical stats, and push to kernel.
final ArraySet matchingIfaces = new ArraySet<>();
for (int i = mNetworkPolicy.size() - 1; i >= 0; i--) {
final NetworkPolicy policy = mNetworkPolicy.valueAt(i);
// Collect all ifaces that match this policy
matchingIfaces.clear();
for (int j = identified.size() - 1; j >= 0; j--) {
if (policy.template.matches(identified.valueAt(j))) {
collectIfaces(matchingIfaces, identified.keyAt(j));
}
}
if (LOGD) {
Slog.d(TAG, "Applying " + policy + " to ifaces " + matchingIfaces);
}
final boolean hasWarning = policy.warningBytes != LIMIT_DISABLED;
final boolean hasLimit = policy.limitBytes != LIMIT_DISABLED;
if (hasLimit || policy.metered) {
final long quotaBytes;
if (hasLimit && policy.hasCycle()) {
final Pair cycle = NetworkPolicyManager
.cycleIterator(policy).next();
final long start = cycle.first.toInstant().toEpochMilli();
final long end = cycle.second.toInstant().toEpochMilli();
final long totalBytes = getTotalBytes(policy.template, start, end);
if (policy.lastLimitSnooze >= start) {
// snoozing past quota, but we still need to restrict apps,
// so push really high quota.
quotaBytes = Long.MAX_VALUE;
} else {
// remaining "quota" bytes are based on total usage in
// current cycle. kernel doesn't like 0-byte rules, so we
// set 1-byte quota and disable the radio later.
quotaBytes = Math.max(1, policy.limitBytes - totalBytes);
}
} else {
// metered network, but no policy limit; we still need to
// restrict apps, so push really high quota.
quotaBytes = Long.MAX_VALUE;
}
if (matchingIfaces.size() > 1) {
// TODO: switch to shared quota once NMS supports
Slog.w(TAG, "shared quota unsupported; generating rule for each iface");
}
for (int j = matchingIfaces.size() - 1; j >= 0; j--) {
final String iface = matchingIfaces.valueAt(j);
setInterfaceQuotaAsync(iface, quotaBytes);
newMeteredIfaces.add(iface);
}
}
// keep track of lowest warning or limit of active policies
if (hasWarning && policy.warningBytes < lowestRule) {
lowestRule = policy.warningBytes;
}
if (hasLimit && policy.limitBytes < lowestRule) {
lowestRule = policy.limitBytes;
}
}
// One final pass to catch any metered ifaces that don't have explicitly
// defined policies; typically Wi-Fi networks.
for (NetworkState state : states) {
if (state.networkInfo != null && state.networkInfo.isConnected()
&& !state.networkCapabilities.hasCapability(NET_CAPABILITY_NOT_METERED)) {
matchingIfaces.clear();
collectIfaces(matchingIfaces, state);
for (int j = matchingIfaces.size() - 1; j >= 0; j--) {
final String iface = matchingIfaces.valueAt(j);
if (!newMeteredIfaces.contains(iface)) {
setInterfaceQuotaAsync(iface, Long.MAX_VALUE);
newMeteredIfaces.add(iface);
}
}
}
}
// Remove quota from any interfaces that are no longer metered.
for (int i = mMeteredIfaces.size() - 1; i >= 0; i--) {
final String iface = mMeteredIfaces.valueAt(i);
if (!newMeteredIfaces.contains(iface)) {
removeInterfaceQuotaAsync(iface);
}
}
mMeteredIfaces = newMeteredIfaces;
final ContentResolver cr = mContext.getContentResolver();
final boolean quotaEnabled = Settings.Global.getInt(cr,
NETPOLICY_QUOTA_ENABLED, 1) != 0;
final long quotaUnlimited = Settings.Global.getLong(cr,
NETPOLICY_QUOTA_UNLIMITED, QUOTA_UNLIMITED_DEFAULT);
final float quotaLimited = Settings.Global.getFloat(cr,
NETPOLICY_QUOTA_LIMITED, QUOTA_LIMITED_DEFAULT);
// Finally, calculate our opportunistic quotas
mSubscriptionOpportunisticQuota.clear();
for (NetworkState state : states) {
if (!quotaEnabled) continue;
if (state.network == null) continue;
final int subId = getSubIdLocked(state.network);
final SubscriptionPlan plan = getPrimarySubscriptionPlanLocked(subId);
if (plan == null) continue;
final long quotaBytes;
final long limitBytes = plan.getDataLimitBytes();
if (!state.networkCapabilities.hasCapability(NET_CAPABILITY_NOT_ROAMING)) {
// Clamp to 0 when roaming
quotaBytes = 0;
} else if (limitBytes == SubscriptionPlan.BYTES_UNKNOWN) {
quotaBytes = OPPORTUNISTIC_QUOTA_UNKNOWN;
} else if (limitBytes == SubscriptionPlan.BYTES_UNLIMITED) {
// Unlimited data; let's use 20MiB/day (600MiB/month)
quotaBytes = quotaUnlimited;
} else {
// Limited data; let's only use 10% of remaining budget
final Range cycle = plan.cycleIterator().next();
final long start = cycle.getLower().toInstant().toEpochMilli();
final long end = cycle.getUpper().toInstant().toEpochMilli();
final Instant now = mClock.instant();
final long startOfDay = ZonedDateTime.ofInstant(now, cycle.getLower().getZone())
.truncatedTo(ChronoUnit.DAYS)
.toInstant().toEpochMilli();
final long totalBytes = getTotalBytes(
NetworkTemplate.buildTemplateMobileAll(state.subscriberId),
start, startOfDay);
final long remainingBytes = limitBytes - totalBytes;
// Number of remaining days including current day
final long remainingDays =
1 + ((end - now.toEpochMilli() - 1) / TimeUnit.DAYS.toMillis(1));
quotaBytes = Math.max(0, (long) ((remainingBytes / remainingDays) * quotaLimited));
}
mSubscriptionOpportunisticQuota.put(subId, quotaBytes);
}
final String[] meteredIfaces = mMeteredIfaces.toArray(new String[mMeteredIfaces.size()]);
mHandler.obtainMessage(MSG_METERED_IFACES_CHANGED, meteredIfaces).sendToTarget();
mHandler.obtainMessage(MSG_ADVISE_PERSIST_THRESHOLD, lowestRule).sendToTarget();
Trace.traceEnd(TRACE_TAG_NETWORK);
}
/**
* Once any {@link #mNetworkPolicy} are loaded from disk, ensure that we
* have at least a default mobile policy defined.
*/
private void ensureActiveMobilePolicyAL() {
if (LOGV) Slog.v(TAG, "ensureActiveMobilePolicyAL()");
if (mSuppressDefaultPolicy) return;
for (int i = 0; i < mSubIdToSubscriberId.size(); i++) {
final int subId = mSubIdToSubscriberId.keyAt(i);
final String subscriberId = mSubIdToSubscriberId.valueAt(i);
ensureActiveMobilePolicyAL(subId, subscriberId);
}
}
/**
* Once any {@link #mNetworkPolicy} are loaded from disk, ensure that we
* have at least a default mobile policy defined.
*
* @param subId to build a default policy for
* @param subscriberId that we check for an existing policy
* @return true if a mobile network policy was added, or false one already existed.
*/
private boolean ensureActiveMobilePolicyAL(int subId, String subscriberId) {
// Poke around to see if we already have a policy
final NetworkIdentity probeIdent = new NetworkIdentity(TYPE_MOBILE,
TelephonyManager.NETWORK_TYPE_UNKNOWN, subscriberId, null, false, true, true);
for (int i = mNetworkPolicy.size() - 1; i >= 0; i--) {
final NetworkTemplate template = mNetworkPolicy.keyAt(i);
if (template.matches(probeIdent)) {
if (LOGD) {
Slog.d(TAG, "Found template " + template + " which matches subscriber "
+ NetworkIdentity.scrubSubscriberId(subscriberId));
}
return false;
}
}
Slog.i(TAG, "No policy for subscriber " + NetworkIdentity.scrubSubscriberId(subscriberId)
+ "; generating default policy");
final NetworkPolicy policy = buildDefaultMobilePolicy(subId, subscriberId);
addNetworkPolicyAL(policy);
return true;
}
private long getPlatformDefaultWarningBytes() {
final int dataWarningConfig = mContext.getResources().getInteger(
com.android.internal.R.integer.config_networkPolicyDefaultWarning);
if (dataWarningConfig == WARNING_DISABLED) {
return WARNING_DISABLED;
} else {
return dataWarningConfig * MB_IN_BYTES;
}
}
private long getPlatformDefaultLimitBytes() {
return LIMIT_DISABLED;
}
@VisibleForTesting
public NetworkPolicy buildDefaultMobilePolicy(int subId, String subscriberId) {
final NetworkTemplate template = buildTemplateMobileAll(subscriberId);
final RecurrenceRule cycleRule = NetworkPolicy
.buildRule(ZonedDateTime.now().getDayOfMonth(), ZoneId.systemDefault());
final NetworkPolicy policy = new NetworkPolicy(template, cycleRule,
getPlatformDefaultWarningBytes(), getPlatformDefaultLimitBytes(),
SNOOZE_NEVER, SNOOZE_NEVER, true, true);
synchronized (mUidRulesFirstLock) {
synchronized (mNetworkPoliciesSecondLock) {
updateDefaultMobilePolicyAL(subId, policy);
}
}
return policy;
}
/**
* Update the given {@link NetworkPolicy} based on any carrier-provided
* defaults via {@link SubscriptionPlan} or {@link CarrierConfigManager}.
* Leaves policy untouched if the user has modified it.
*
* @return if the policy was modified
*/
private boolean updateDefaultMobilePolicyAL(int subId, NetworkPolicy policy) {
if (!policy.inferred) {
if (LOGD) Slog.d(TAG, "Ignoring user-defined policy " + policy);
return false;
}
final NetworkPolicy original = new NetworkPolicy(policy.template, policy.cycleRule,
policy.warningBytes, policy.limitBytes, policy.lastWarningSnooze,
policy.lastLimitSnooze, policy.metered, policy.inferred);
final SubscriptionPlan[] plans = mSubscriptionPlans.get(subId);
if (!ArrayUtils.isEmpty(plans)) {
final SubscriptionPlan plan = plans[0];
policy.cycleRule = plan.getCycleRule();
final long planLimitBytes = plan.getDataLimitBytes();
if (planLimitBytes == SubscriptionPlan.BYTES_UNKNOWN) {
policy.warningBytes = getPlatformDefaultWarningBytes();
policy.limitBytes = getPlatformDefaultLimitBytes();
} else if (planLimitBytes == SubscriptionPlan.BYTES_UNLIMITED) {
policy.warningBytes = NetworkPolicy.WARNING_DISABLED;
policy.limitBytes = NetworkPolicy.LIMIT_DISABLED;
} else {
policy.warningBytes = (planLimitBytes * 9) / 10;
switch (plan.getDataLimitBehavior()) {
case SubscriptionPlan.LIMIT_BEHAVIOR_BILLED:
case SubscriptionPlan.LIMIT_BEHAVIOR_DISABLED:
policy.limitBytes = planLimitBytes;
break;
default:
policy.limitBytes = NetworkPolicy.LIMIT_DISABLED;
break;
}
}
} else {
final PersistableBundle config = mCarrierConfigManager.getConfigForSubId(subId);
final int currentCycleDay;
if (policy.cycleRule.isMonthly()) {
currentCycleDay = policy.cycleRule.start.getDayOfMonth();
} else {
currentCycleDay = NetworkPolicy.CYCLE_NONE;
}
final int cycleDay = getCycleDayFromCarrierConfig(config, currentCycleDay);
policy.cycleRule = NetworkPolicy.buildRule(cycleDay, ZoneId.systemDefault());
policy.warningBytes = getWarningBytesFromCarrierConfig(config, policy.warningBytes);
policy.limitBytes = getLimitBytesFromCarrierConfig(config, policy.limitBytes);
}
if (policy.equals(original)) {
return false;
} else {
Slog.d(TAG, "Updated " + original + " to " + policy);
return true;
}
}
private void readPolicyAL() {
if (LOGV) Slog.v(TAG, "readPolicyAL()");
// clear any existing policy and read from disk
mNetworkPolicy.clear();
mSubscriptionPlans.clear();
mSubscriptionPlansOwner.clear();
mUidPolicy.clear();
FileInputStream fis = null;
try {
fis = mPolicyFile.openRead();
final XmlPullParser in = Xml.newPullParser();
in.setInput(fis, StandardCharsets.UTF_8.name());
// Must save the tags and convert them to later,
// to skip UIDs that were explicitly blacklisted.
final SparseBooleanArray whitelistedRestrictBackground = new SparseBooleanArray();
int type;
int version = VERSION_INIT;
boolean insideWhitelist = false;
while ((type = in.next()) != END_DOCUMENT) {
final String tag = in.getName();
if (type == START_TAG) {
if (TAG_POLICY_LIST.equals(tag)) {
final boolean oldValue = mRestrictBackground;
version = readIntAttribute(in, ATTR_VERSION);
mLoadedRestrictBackground = (version >= VERSION_ADDED_RESTRICT_BACKGROUND)
&& readBooleanAttribute(in, ATTR_RESTRICT_BACKGROUND);
} else if (TAG_NETWORK_POLICY.equals(tag)) {
final int networkTemplate = readIntAttribute(in, ATTR_NETWORK_TEMPLATE);
final String subscriberId = in.getAttributeValue(null, ATTR_SUBSCRIBER_ID);
final String networkId;
if (version >= VERSION_ADDED_NETWORK_ID) {
networkId = in.getAttributeValue(null, ATTR_NETWORK_ID);
} else {
networkId = null;
}
final RecurrenceRule cycleRule;
if (version >= VERSION_ADDED_CYCLE) {
final String start = readStringAttribute(in, ATTR_CYCLE_START);
final String end = readStringAttribute(in, ATTR_CYCLE_END);
final String period = readStringAttribute(in, ATTR_CYCLE_PERIOD);
cycleRule = new RecurrenceRule(
RecurrenceRule.convertZonedDateTime(start),
RecurrenceRule.convertZonedDateTime(end),
RecurrenceRule.convertPeriod(period));
} else {
final int cycleDay = readIntAttribute(in, ATTR_CYCLE_DAY);
final String cycleTimezone;
if (version >= VERSION_ADDED_TIMEZONE) {
cycleTimezone = in.getAttributeValue(null, ATTR_CYCLE_TIMEZONE);
} else {
cycleTimezone = "UTC";
}
cycleRule = NetworkPolicy.buildRule(cycleDay, ZoneId.of(cycleTimezone));
}
final long warningBytes = readLongAttribute(in, ATTR_WARNING_BYTES);
final long limitBytes = readLongAttribute(in, ATTR_LIMIT_BYTES);
final long lastLimitSnooze;
if (version >= VERSION_SPLIT_SNOOZE) {
lastLimitSnooze = readLongAttribute(in, ATTR_LAST_LIMIT_SNOOZE);
} else if (version >= VERSION_ADDED_SNOOZE) {
lastLimitSnooze = readLongAttribute(in, ATTR_LAST_SNOOZE);
} else {
lastLimitSnooze = SNOOZE_NEVER;
}
final boolean metered;
if (version >= VERSION_ADDED_METERED) {
metered = readBooleanAttribute(in, ATTR_METERED);
} else {
switch (networkTemplate) {
case MATCH_MOBILE:
metered = true;
break;
default:
metered = false;
}
}
final long lastWarningSnooze;
if (version >= VERSION_SPLIT_SNOOZE) {
lastWarningSnooze = readLongAttribute(in, ATTR_LAST_WARNING_SNOOZE);
} else {
lastWarningSnooze = SNOOZE_NEVER;
}
final boolean inferred;
if (version >= VERSION_ADDED_INFERRED) {
inferred = readBooleanAttribute(in, ATTR_INFERRED);
} else {
inferred = false;
}
final NetworkTemplate template = new NetworkTemplate(networkTemplate,
subscriberId, networkId);
if (template.isPersistable()) {
mNetworkPolicy.put(template, new NetworkPolicy(template, cycleRule,
warningBytes, limitBytes, lastWarningSnooze,
lastLimitSnooze, metered, inferred));
}
} else if (TAG_SUBSCRIPTION_PLAN.equals(tag)) {
final String start = readStringAttribute(in, ATTR_CYCLE_START);
final String end = readStringAttribute(in, ATTR_CYCLE_END);
final String period = readStringAttribute(in, ATTR_CYCLE_PERIOD);
final SubscriptionPlan.Builder builder = new SubscriptionPlan.Builder(
RecurrenceRule.convertZonedDateTime(start),
RecurrenceRule.convertZonedDateTime(end),
RecurrenceRule.convertPeriod(period));
builder.setTitle(readStringAttribute(in, ATTR_TITLE));
builder.setSummary(readStringAttribute(in, ATTR_SUMMARY));
final long limitBytes = readLongAttribute(in, ATTR_LIMIT_BYTES,
SubscriptionPlan.BYTES_UNKNOWN);
final int limitBehavior = readIntAttribute(in, ATTR_LIMIT_BEHAVIOR,
SubscriptionPlan.LIMIT_BEHAVIOR_UNKNOWN);
if (limitBytes != SubscriptionPlan.BYTES_UNKNOWN
&& limitBehavior != SubscriptionPlan.LIMIT_BEHAVIOR_UNKNOWN) {
builder.setDataLimit(limitBytes, limitBehavior);
}
final long usageBytes = readLongAttribute(in, ATTR_USAGE_BYTES,
SubscriptionPlan.BYTES_UNKNOWN);
final long usageTime = readLongAttribute(in, ATTR_USAGE_TIME,
SubscriptionPlan.TIME_UNKNOWN);
if (usageBytes != SubscriptionPlan.BYTES_UNKNOWN
&& usageTime != SubscriptionPlan.TIME_UNKNOWN) {
builder.setDataUsage(usageBytes, usageTime);
}
final int subId = readIntAttribute(in, ATTR_SUB_ID);
final SubscriptionPlan plan = builder.build();
mSubscriptionPlans.put(subId, ArrayUtils.appendElement(
SubscriptionPlan.class, mSubscriptionPlans.get(subId), plan));
final String ownerPackage = readStringAttribute(in, ATTR_OWNER_PACKAGE);
mSubscriptionPlansOwner.put(subId, ownerPackage);
} else if (TAG_UID_POLICY.equals(tag)) {
final int uid = readIntAttribute(in, ATTR_UID);
final int policy = readIntAttribute(in, ATTR_POLICY);
if (UserHandle.isApp(uid)) {
setUidPolicyUncheckedUL(uid, policy, false);
} else {
Slog.w(TAG, "unable to apply policy to UID " + uid + "; ignoring");
}
} else if (TAG_APP_POLICY.equals(tag)) {
final int appId = readIntAttribute(in, ATTR_APP_ID);
final int policy = readIntAttribute(in, ATTR_POLICY);
// TODO: set for other users during upgrade
// app policy is deprecated so this is only used in pre system user split.
final int uid = UserHandle.getUid(UserHandle.USER_SYSTEM, appId);
if (UserHandle.isApp(uid)) {
setUidPolicyUncheckedUL(uid, policy, false);
} else {
Slog.w(TAG, "unable to apply policy to UID " + uid + "; ignoring");
}
} else if (TAG_WHITELIST.equals(tag)) {
insideWhitelist = true;
} else if (TAG_RESTRICT_BACKGROUND.equals(tag) && insideWhitelist) {
final int uid = readIntAttribute(in, ATTR_UID);
whitelistedRestrictBackground.append(uid, true);
} else if (TAG_REVOKED_RESTRICT_BACKGROUND.equals(tag) && insideWhitelist) {
final int uid = readIntAttribute(in, ATTR_UID);
mRestrictBackgroundWhitelistRevokedUids.put(uid, true);
}
} else if (type == END_TAG) {
if (TAG_WHITELIST.equals(tag)) {
insideWhitelist = false;
}
}
}
final int size = whitelistedRestrictBackground.size();
for (int i = 0; i < size; i++) {
final int uid = whitelistedRestrictBackground.keyAt(i);
final int policy = mUidPolicy.get(uid, POLICY_NONE);
if ((policy & POLICY_REJECT_METERED_BACKGROUND) != 0) {
Slog.w(TAG, "ignoring restrict-background-whitelist for " + uid
+ " because its policy is " + uidPoliciesToString(policy));
continue;
}
if (UserHandle.isApp(uid)) {
final int newPolicy = policy | POLICY_ALLOW_METERED_BACKGROUND;
if (LOGV)
Log.v(TAG, "new policy for " + uid + ": " + uidPoliciesToString(newPolicy));
setUidPolicyUncheckedUL(uid, newPolicy, false);
} else {
Slog.w(TAG, "unable to update policy on UID " + uid);
}
}
} catch (FileNotFoundException e) {
// missing policy is okay, probably first boot
upgradeDefaultBackgroundDataUL();
} catch (Exception e) {
Log.wtf(TAG, "problem reading network policy", e);
} finally {
IoUtils.closeQuietly(fis);
}
}
/**
* Upgrade legacy background data flags, notifying listeners of one last
* change to always-true.
*/
private void upgradeDefaultBackgroundDataUL() {
// This method is only called when we're unable to find the network policy flag, which
// usually happens on first boot of a new device and not one that has received an OTA.
// Seed from the default value configured for this device.
mLoadedRestrictBackground = Settings.Global.getInt(
mContext.getContentResolver(), Global.DEFAULT_RESTRICT_BACKGROUND_DATA, 0) == 1;
// NOTE: We used to read the legacy setting here :
//
// final int legacyFlagValue = Settings.Secure.getInt(
// mContext.getContentResolver(), Settings.Secure.BACKGROUND_DATA, ..);
//
// This is no longer necessary because we will never upgrade directly from Gingerbread
// to O+. Devices upgrading from ICS onwards to O will have a netpolicy.xml file that
// contains the correct value that we will continue to use.
}
/**
* Perform upgrade step of moving any user-defined meterness overrides over
* into {@link WifiConfiguration}.
*/
private void upgradeWifiMeteredOverrideAL() {
boolean modified = false;
final WifiManager wm = mContext.getSystemService(WifiManager.class);
final List configs = wm.getConfiguredNetworks();
for (int i = 0; i < mNetworkPolicy.size(); ) {
final NetworkPolicy policy = mNetworkPolicy.valueAt(i);
if (policy.template.getMatchRule() == NetworkTemplate.MATCH_WIFI
&& !policy.inferred) {
mNetworkPolicy.removeAt(i);
modified = true;
final String networkId = resolveNetworkId(policy.template.getNetworkId());
for (WifiConfiguration config : configs) {
if (Objects.equals(resolveNetworkId(config), networkId)) {
Slog.d(TAG, "Found network " + networkId + "; upgrading metered hint");
config.meteredOverride = policy.metered
? WifiConfiguration.METERED_OVERRIDE_METERED
: WifiConfiguration.METERED_OVERRIDE_NOT_METERED;
wm.updateNetwork(config);
}
}
} else {
i++;
}
}
if (modified) {
writePolicyAL();
}
}
void writePolicyAL() {
if (LOGV) Slog.v(TAG, "writePolicyAL()");
FileOutputStream fos = null;
try {
fos = mPolicyFile.startWrite();
XmlSerializer out = new FastXmlSerializer();
out.setOutput(fos, StandardCharsets.UTF_8.name());
out.startDocument(null, true);
out.startTag(null, TAG_POLICY_LIST);
writeIntAttribute(out, ATTR_VERSION, VERSION_LATEST);
writeBooleanAttribute(out, ATTR_RESTRICT_BACKGROUND, mRestrictBackground);
// write all known network policies
for (int i = 0; i < mNetworkPolicy.size(); i++) {
final NetworkPolicy policy = mNetworkPolicy.valueAt(i);
final NetworkTemplate template = policy.template;
if (!template.isPersistable()) continue;
out.startTag(null, TAG_NETWORK_POLICY);
writeIntAttribute(out, ATTR_NETWORK_TEMPLATE, template.getMatchRule());
final String subscriberId = template.getSubscriberId();
if (subscriberId != null) {
out.attribute(null, ATTR_SUBSCRIBER_ID, subscriberId);
}
final String networkId = template.getNetworkId();
if (networkId != null) {
out.attribute(null, ATTR_NETWORK_ID, networkId);
}
writeStringAttribute(out, ATTR_CYCLE_START,
RecurrenceRule.convertZonedDateTime(policy.cycleRule.start));
writeStringAttribute(out, ATTR_CYCLE_END,
RecurrenceRule.convertZonedDateTime(policy.cycleRule.end));
writeStringAttribute(out, ATTR_CYCLE_PERIOD,
RecurrenceRule.convertPeriod(policy.cycleRule.period));
writeLongAttribute(out, ATTR_WARNING_BYTES, policy.warningBytes);
writeLongAttribute(out, ATTR_LIMIT_BYTES, policy.limitBytes);
writeLongAttribute(out, ATTR_LAST_WARNING_SNOOZE, policy.lastWarningSnooze);
writeLongAttribute(out, ATTR_LAST_LIMIT_SNOOZE, policy.lastLimitSnooze);
writeBooleanAttribute(out, ATTR_METERED, policy.metered);
writeBooleanAttribute(out, ATTR_INFERRED, policy.inferred);
out.endTag(null, TAG_NETWORK_POLICY);
}
// write all known subscription plans
for (int i = 0; i < mSubscriptionPlans.size(); i++) {
final int subId = mSubscriptionPlans.keyAt(i);
final String ownerPackage = mSubscriptionPlansOwner.get(subId);
final SubscriptionPlan[] plans = mSubscriptionPlans.valueAt(i);
if (ArrayUtils.isEmpty(plans)) continue;
for (SubscriptionPlan plan : plans) {
out.startTag(null, TAG_SUBSCRIPTION_PLAN);
writeIntAttribute(out, ATTR_SUB_ID, subId);
writeStringAttribute(out, ATTR_OWNER_PACKAGE, ownerPackage);
final RecurrenceRule cycleRule = plan.getCycleRule();
writeStringAttribute(out, ATTR_CYCLE_START,
RecurrenceRule.convertZonedDateTime(cycleRule.start));
writeStringAttribute(out, ATTR_CYCLE_END,
RecurrenceRule.convertZonedDateTime(cycleRule.end));
writeStringAttribute(out, ATTR_CYCLE_PERIOD,
RecurrenceRule.convertPeriod(cycleRule.period));
writeStringAttribute(out, ATTR_TITLE, plan.getTitle());
writeStringAttribute(out, ATTR_SUMMARY, plan.getSummary());
writeLongAttribute(out, ATTR_LIMIT_BYTES, plan.getDataLimitBytes());
writeIntAttribute(out, ATTR_LIMIT_BEHAVIOR, plan.getDataLimitBehavior());
writeLongAttribute(out, ATTR_USAGE_BYTES, plan.getDataUsageBytes());
writeLongAttribute(out, ATTR_USAGE_TIME, plan.getDataUsageTime());
out.endTag(null, TAG_SUBSCRIPTION_PLAN);
}
}
// write all known uid policies
for (int i = 0; i < mUidPolicy.size(); i++) {
final int uid = mUidPolicy.keyAt(i);
final int policy = mUidPolicy.valueAt(i);
// skip writing empty policies
if (policy == POLICY_NONE) continue;
out.startTag(null, TAG_UID_POLICY);
writeIntAttribute(out, ATTR_UID, uid);
writeIntAttribute(out, ATTR_POLICY, policy);
out.endTag(null, TAG_UID_POLICY);
}
out.endTag(null, TAG_POLICY_LIST);
// write all whitelists
out.startTag(null, TAG_WHITELIST);
// revoked restrict background whitelist
int size = mRestrictBackgroundWhitelistRevokedUids.size();
for (int i = 0; i < size; i++) {
final int uid = mRestrictBackgroundWhitelistRevokedUids.keyAt(i);
out.startTag(null, TAG_REVOKED_RESTRICT_BACKGROUND);
writeIntAttribute(out, ATTR_UID, uid);
out.endTag(null, TAG_REVOKED_RESTRICT_BACKGROUND);
}
out.endTag(null, TAG_WHITELIST);
out.endDocument();
mPolicyFile.finishWrite(fos);
} catch (IOException e) {
if (fos != null) {
mPolicyFile.failWrite(fos);
}
}
}
@Override
public void setUidPolicy(int uid, int policy) {
mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG);
if (!UserHandle.isApp(uid)) {
throw new IllegalArgumentException("cannot apply policy to UID " + uid);
}
synchronized (mUidRulesFirstLock) {
final long token = Binder.clearCallingIdentity();
try {
final int oldPolicy = mUidPolicy.get(uid, POLICY_NONE);
if (oldPolicy != policy) {
setUidPolicyUncheckedUL(uid, oldPolicy, policy, true);
mLogger.uidPolicyChanged(uid, oldPolicy, policy);
}
} finally {
Binder.restoreCallingIdentity(token);
}
}
}
@Override
public void addUidPolicy(int uid, int policy) {
mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG);
if (!UserHandle.isApp(uid)) {
throw new IllegalArgumentException("cannot apply policy to UID " + uid);
}
synchronized (mUidRulesFirstLock) {
final int oldPolicy = mUidPolicy.get(uid, POLICY_NONE);
policy |= oldPolicy;
if (oldPolicy != policy) {
setUidPolicyUncheckedUL(uid, oldPolicy, policy, true);
mLogger.uidPolicyChanged(uid, oldPolicy, policy);
}
}
}
@Override
public void removeUidPolicy(int uid, int policy) {
mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG);
if (!UserHandle.isApp(uid)) {
throw new IllegalArgumentException("cannot apply policy to UID " + uid);
}
synchronized (mUidRulesFirstLock) {
final int oldPolicy = mUidPolicy.get(uid, POLICY_NONE);
policy = oldPolicy & ~policy;
if (oldPolicy != policy) {
setUidPolicyUncheckedUL(uid, oldPolicy, policy, true);
mLogger.uidPolicyChanged(uid, oldPolicy, policy);
}
}
}
private void setUidPolicyUncheckedUL(int uid, int oldPolicy, int policy, boolean persist) {
setUidPolicyUncheckedUL(uid, policy, false);
final boolean notifyApp;
if (!isUidValidForWhitelistRules(uid)) {
notifyApp = false;
} else {
final boolean wasBlacklisted = oldPolicy == POLICY_REJECT_METERED_BACKGROUND;
final boolean isBlacklisted = policy == POLICY_REJECT_METERED_BACKGROUND;
final boolean wasWhitelisted = oldPolicy == POLICY_ALLOW_METERED_BACKGROUND;
final boolean isWhitelisted = policy == POLICY_ALLOW_METERED_BACKGROUND;
final boolean wasBlocked = wasBlacklisted || (mRestrictBackground && !wasWhitelisted);
final boolean isBlocked = isBlacklisted || (mRestrictBackground && !isWhitelisted);
if ((wasWhitelisted && (!isWhitelisted || isBlacklisted))
&& mDefaultRestrictBackgroundWhitelistUids.get(uid)
&& !mRestrictBackgroundWhitelistRevokedUids.get(uid)) {
if (LOGD)
Slog.d(TAG, "Adding uid " + uid + " to revoked restrict background whitelist");
mRestrictBackgroundWhitelistRevokedUids.append(uid, true);
}
notifyApp = wasBlocked != isBlocked;
}
mHandler.obtainMessage(MSG_POLICIES_CHANGED, uid, policy, Boolean.valueOf(notifyApp))
.sendToTarget();
if (persist) {
synchronized (mNetworkPoliciesSecondLock) {
writePolicyAL();
}
}
}
private void setUidPolicyUncheckedUL(int uid, int policy, boolean persist) {
if (policy == POLICY_NONE) {
mUidPolicy.delete(uid);
} else {
mUidPolicy.put(uid, policy);
}
// uid policy changed, recompute rules and persist policy.
updateRulesForDataUsageRestrictionsUL(uid);
if (persist) {
synchronized (mNetworkPoliciesSecondLock) {
writePolicyAL();
}
}
}
@Override
public int getUidPolicy(int uid) {
mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG);
synchronized (mUidRulesFirstLock) {
return mUidPolicy.get(uid, POLICY_NONE);
}
}
@Override
public int[] getUidsWithPolicy(int policy) {
mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG);
int[] uids = new int[0];
synchronized (mUidRulesFirstLock) {
for (int i = 0; i < mUidPolicy.size(); i++) {
final int uid = mUidPolicy.keyAt(i);
final int uidPolicy = mUidPolicy.valueAt(i);
if ((policy == POLICY_NONE && uidPolicy == POLICY_NONE) ||
(uidPolicy & policy) != 0) {
uids = appendInt(uids, uid);
}
}
}
return uids;
}
/**
* Removes any persistable state associated with given {@link UserHandle}, persisting
* if any changes that are made.
*/
boolean removeUserStateUL(int userId, boolean writePolicy) {
mLogger.removingUserState(userId);
boolean changed = false;
// Remove entries from revoked default restricted background UID whitelist
for (int i = mRestrictBackgroundWhitelistRevokedUids.size() - 1; i >= 0; i--) {
final int uid = mRestrictBackgroundWhitelistRevokedUids.keyAt(i);
if (UserHandle.getUserId(uid) == userId) {
mRestrictBackgroundWhitelistRevokedUids.removeAt(i);
changed = true;
}
}
// Remove associated UID policies
int[] uids = new int[0];
for (int i = 0; i < mUidPolicy.size(); i++) {
final int uid = mUidPolicy.keyAt(i);
if (UserHandle.getUserId(uid) == userId) {
uids = appendInt(uids, uid);
}
}
if (uids.length > 0) {
for (int uid : uids) {
mUidPolicy.delete(uid);
}
changed = true;
}
synchronized (mNetworkPoliciesSecondLock) {
updateRulesForGlobalChangeAL(true);
if (writePolicy && changed) {
writePolicyAL();
}
}
return changed;
}
@Override
public void registerListener(INetworkPolicyListener listener) {
// TODO: create permission for observing network policy
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
mListeners.register(listener);
}
@Override
public void unregisterListener(INetworkPolicyListener listener) {
// TODO: create permission for observing network policy
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
mListeners.unregister(listener);
}
@Override
public void setNetworkPolicies(NetworkPolicy[] policies) {
mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG);
final long token = Binder.clearCallingIdentity();
try {
synchronized (mUidRulesFirstLock) {
synchronized (mNetworkPoliciesSecondLock) {
normalizePoliciesNL(policies);
handleNetworkPoliciesUpdateAL(false);
}
}
} finally {
Binder.restoreCallingIdentity(token);
}
}
void addNetworkPolicyAL(NetworkPolicy policy) {
NetworkPolicy[] policies = getNetworkPolicies(mContext.getOpPackageName());
policies = ArrayUtils.appendElement(NetworkPolicy.class, policies, policy);
setNetworkPolicies(policies);
}
@Override
public NetworkPolicy[] getNetworkPolicies(String callingPackage) {
mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG);
try {
mContext.enforceCallingOrSelfPermission(READ_PRIVILEGED_PHONE_STATE, TAG);
// SKIP checking run-time OP_READ_PHONE_STATE since caller or self has PRIVILEGED
// permission
} catch (SecurityException e) {
mContext.enforceCallingOrSelfPermission(READ_PHONE_STATE, TAG);
if (mAppOps.noteOp(AppOpsManager.OP_READ_PHONE_STATE, Binder.getCallingUid(),
callingPackage) != AppOpsManager.MODE_ALLOWED) {
return new NetworkPolicy[0];
}
}
synchronized (mNetworkPoliciesSecondLock) {
final int size = mNetworkPolicy.size();
final NetworkPolicy[] policies = new NetworkPolicy[size];
for (int i = 0; i < size; i++) {
policies[i] = mNetworkPolicy.valueAt(i);
}
return policies;
}
}
private void normalizePoliciesNL() {
normalizePoliciesNL(getNetworkPolicies(mContext.getOpPackageName()));
}
private void normalizePoliciesNL(NetworkPolicy[] policies) {
mNetworkPolicy.clear();
for (NetworkPolicy policy : policies) {
if (policy == null) {
continue;
}
// When two normalized templates conflict, prefer the most
// restrictive policy
policy.template = NetworkTemplate.normalize(policy.template, mMergedSubscriberIds);
final NetworkPolicy existing = mNetworkPolicy.get(policy.template);
if (existing == null || existing.compareTo(policy) > 0) {
if (existing != null) {
Slog.d(TAG, "Normalization replaced " + existing + " with " + policy);
}
mNetworkPolicy.put(policy.template, policy);
}
}
}
@Override
public void snoozeLimit(NetworkTemplate template) {
mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG);
final long token = Binder.clearCallingIdentity();
try {
performSnooze(template, TYPE_LIMIT);
} finally {
Binder.restoreCallingIdentity(token);
}
}
void performSnooze(NetworkTemplate template, int type) {
final long currentTime = mClock.millis();
synchronized (mUidRulesFirstLock) {
synchronized (mNetworkPoliciesSecondLock) {
// find and snooze local policy that matches
final NetworkPolicy policy = mNetworkPolicy.get(template);
if (policy == null) {
throw new IllegalArgumentException("unable to find policy for " + template);
}
switch (type) {
case TYPE_WARNING:
policy.lastWarningSnooze = currentTime;
break;
case TYPE_LIMIT:
policy.lastLimitSnooze = currentTime;
break;
case TYPE_RAPID:
policy.lastRapidSnooze = currentTime;
break;
default:
throw new IllegalArgumentException("unexpected type");
}
handleNetworkPoliciesUpdateAL(true);
}
}
}
@Override
public void onTetheringChanged(String iface, boolean tethering) {
// No need to enforce permission because setRestrictBackground() will do it.
synchronized (mUidRulesFirstLock) {
if (mRestrictBackground && tethering) {
Log.d(TAG, "Tethering on (" + iface +"); disable Data Saver");
setRestrictBackground(false);
}
}
}
@Override
public void setRestrictBackground(boolean restrictBackground) {
Trace.traceBegin(Trace.TRACE_TAG_NETWORK, "setRestrictBackground");
try {
mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG);
final long token = Binder.clearCallingIdentity();
try {
synchronized (mUidRulesFirstLock) {
setRestrictBackgroundUL(restrictBackground);
}
} finally {
Binder.restoreCallingIdentity(token);
}
} finally {
Trace.traceEnd(Trace.TRACE_TAG_NETWORK);
}
}
private void setRestrictBackgroundUL(boolean restrictBackground) {
Trace.traceBegin(Trace.TRACE_TAG_NETWORK, "setRestrictBackgroundUL");
try {
if (restrictBackground == mRestrictBackground) {
// Ideally, UI should never allow this scenario...
Slog.w(TAG, "setRestrictBackgroundUL: already " + restrictBackground);
return;
}
Slog.d(TAG, "setRestrictBackgroundUL(): " + restrictBackground);
final boolean oldRestrictBackground = mRestrictBackground;
mRestrictBackground = restrictBackground;
// Must whitelist foreground apps before turning data saver mode on.
// TODO: there is no need to iterate through all apps here, just those in the foreground,
// so it could call AM to get the UIDs of such apps, and iterate through them instead.
updateRulesForRestrictBackgroundUL();
try {
if (!mNetworkManager.setDataSaverModeEnabled(mRestrictBackground)) {
Slog.e(TAG,
"Could not change Data Saver Mode on NMS to " + mRestrictBackground);
mRestrictBackground = oldRestrictBackground;
// TODO: if it knew the foreground apps (see TODO above), it could call
// updateRulesForRestrictBackgroundUL() again to restore state.
return;
}
} catch (RemoteException e) {
// ignored; service lives in system_server
}
sendRestrictBackgroundChangedMsg();
mLogger.restrictBackgroundChanged(oldRestrictBackground, mRestrictBackground);
if (mRestrictBackgroundPowerState.globalBatterySaverEnabled) {
mRestrictBackgroundChangedInBsm = true;
}
synchronized (mNetworkPoliciesSecondLock) {
updateNotificationsNL();
writePolicyAL();
}
} finally {
Trace.traceEnd(Trace.TRACE_TAG_NETWORK);
}
}
private void sendRestrictBackgroundChangedMsg() {
mHandler.removeMessages(MSG_RESTRICT_BACKGROUND_CHANGED);
mHandler.obtainMessage(MSG_RESTRICT_BACKGROUND_CHANGED, mRestrictBackground ? 1 : 0, 0)
.sendToTarget();
}
@Override
public int getRestrictBackgroundByCaller() {
mContext.enforceCallingOrSelfPermission(ACCESS_NETWORK_STATE, TAG);
final int uid = Binder.getCallingUid();
synchronized (mUidRulesFirstLock) {
// Must clear identity because getUidPolicy() is restricted to system.
final long token = Binder.clearCallingIdentity();
final int policy;
try {
policy = getUidPolicy(uid);
} finally {
Binder.restoreCallingIdentity(token);
}
if (policy == POLICY_REJECT_METERED_BACKGROUND) {
// App is blacklisted.
return RESTRICT_BACKGROUND_STATUS_ENABLED;
}
if (!mRestrictBackground) {
return RESTRICT_BACKGROUND_STATUS_DISABLED;
}
return (mUidPolicy.get(uid) & POLICY_ALLOW_METERED_BACKGROUND) != 0
? RESTRICT_BACKGROUND_STATUS_WHITELISTED
: RESTRICT_BACKGROUND_STATUS_ENABLED;
}
}
@Override
public boolean getRestrictBackground() {
mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG);
synchronized (mUidRulesFirstLock) {
return mRestrictBackground;
}
}
@Override
public void setDeviceIdleMode(boolean enabled) {
mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG);
Trace.traceBegin(Trace.TRACE_TAG_NETWORK, "setDeviceIdleMode");
try {
synchronized (mUidRulesFirstLock) {
if (mDeviceIdleMode == enabled) {
return;
}
mDeviceIdleMode = enabled;
mLogger.deviceIdleModeEnabled(enabled);
if (mSystemReady) {
// Device idle change means we need to rebuild rules for all
// known apps, so do a global refresh.
updateRulesForRestrictPowerUL();
}
}
if (enabled) {
EventLogTags.writeDeviceIdleOnPhase("net");
} else {
EventLogTags.writeDeviceIdleOffPhase("net");
}
} finally {
Trace.traceEnd(Trace.TRACE_TAG_NETWORK);
}
}
@Override
public void setWifiMeteredOverride(String networkId, int meteredOverride) {
mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG);
final long token = Binder.clearCallingIdentity();
try {
final WifiManager wm = mContext.getSystemService(WifiManager.class);
final List configs = wm.getConfiguredNetworks();
for (WifiConfiguration config : configs) {
if (Objects.equals(resolveNetworkId(config), networkId)) {
config.meteredOverride = meteredOverride;
wm.updateNetwork(config);
}
}
} finally {
Binder.restoreCallingIdentity(token);
}
}
@Override
@Deprecated
public NetworkQuotaInfo getNetworkQuotaInfo(NetworkState state) {
Log.w(TAG, "Shame on UID " + Binder.getCallingUid()
+ " for calling the hidden API getNetworkQuotaInfo(). Shame!");
return new NetworkQuotaInfo();
}
private void enforceSubscriptionPlanAccess(int subId, int callingUid, String callingPackage) {
// Verify they're not lying about package name
mAppOps.checkPackage(callingUid, callingPackage);
final SubscriptionInfo si;
final PersistableBundle config;
final long token = Binder.clearCallingIdentity();
try {
si = mContext.getSystemService(SubscriptionManager.class)
.getActiveSubscriptionInfo(subId);
config = mCarrierConfigManager.getConfigForSubId(subId);
} finally {
Binder.restoreCallingIdentity(token);
}
// First check: is caller the CarrierService?
if (si != null) {
if (si.isEmbedded() && si.canManageSubscription(mContext, callingPackage)) {
return;
}
}
// Second check: has the CarrierService delegated access?
if (config != null) {
final String overridePackage = config
.getString(CarrierConfigManager.KEY_CONFIG_PLANS_PACKAGE_OVERRIDE_STRING, null);
if (!TextUtils.isEmpty(overridePackage)
&& Objects.equals(overridePackage, callingPackage)) {
return;
}
}
// Third check: is caller the fallback/default CarrierService?
final String defaultPackage = mCarrierConfigManager.getDefaultCarrierServicePackageName();
if (!TextUtils.isEmpty(defaultPackage)
&& Objects.equals(defaultPackage, callingPackage)) {
return;
}
// Fourth check: is caller a testing app?
final String testPackage = SystemProperties.get(PROP_SUB_PLAN_OWNER + "." + subId, null);
if (!TextUtils.isEmpty(testPackage)
&& Objects.equals(testPackage, callingPackage)) {
return;
}
// Fifth check: is caller a legacy testing app?
final String legacyTestPackage = SystemProperties.get("fw.sub_plan_owner." + subId, null);
if (!TextUtils.isEmpty(legacyTestPackage)
&& Objects.equals(legacyTestPackage, callingPackage)) {
return;
}
// Final check: does the caller hold a permission?
mContext.enforceCallingOrSelfPermission(MANAGE_SUBSCRIPTION_PLANS, TAG);
}
@Override
public SubscriptionPlan[] getSubscriptionPlans(int subId, String callingPackage) {
enforceSubscriptionPlanAccess(subId, Binder.getCallingUid(), callingPackage);
final String fake = SystemProperties.get("fw.fake_plan");
if (!TextUtils.isEmpty(fake)) {
final List plans = new ArrayList<>();
if ("month_hard".equals(fake)) {
plans.add(SubscriptionPlan.Builder
.createRecurringMonthly(ZonedDateTime.parse("2007-03-14T00:00:00.000Z"))
.setTitle("G-Mobile")
.setDataLimit(5 * TrafficStats.GB_IN_BYTES,
SubscriptionPlan.LIMIT_BEHAVIOR_BILLED)
.setDataUsage(1 * TrafficStats.GB_IN_BYTES,
ZonedDateTime.now().minusHours(36).toInstant().toEpochMilli())
.build());
plans.add(SubscriptionPlan.Builder
.createRecurringMonthly(ZonedDateTime.parse("2017-03-14T00:00:00.000Z"))
.setTitle("G-Mobile Happy")
.setDataLimit(SubscriptionPlan.BYTES_UNLIMITED,
SubscriptionPlan.LIMIT_BEHAVIOR_BILLED)
.setDataUsage(5 * TrafficStats.GB_IN_BYTES,
ZonedDateTime.now().minusHours(36).toInstant().toEpochMilli())
.build());
plans.add(SubscriptionPlan.Builder
.createRecurringMonthly(ZonedDateTime.parse("2017-03-14T00:00:00.000Z"))
.setTitle("G-Mobile, Charged after limit")
.setDataLimit(5 * TrafficStats.GB_IN_BYTES,
SubscriptionPlan.LIMIT_BEHAVIOR_BILLED)
.setDataUsage(5 * TrafficStats.GB_IN_BYTES,
ZonedDateTime.now().minusHours(36).toInstant().toEpochMilli())
.build());
} else if ("month_soft".equals(fake)) {
plans.add(SubscriptionPlan.Builder
.createRecurringMonthly(ZonedDateTime.parse("2007-03-14T00:00:00.000Z"))
.setTitle("G-Mobile is the carriers name who this plan belongs to")
.setSummary("Crazy unlimited bandwidth plan with incredibly long title "
+ "that should be cut off to prevent UI from looking terrible")
.setDataLimit(5 * TrafficStats.GB_IN_BYTES,
SubscriptionPlan.LIMIT_BEHAVIOR_THROTTLED)
.setDataUsage(1 * TrafficStats.GB_IN_BYTES,
ZonedDateTime.now().minusHours(1).toInstant().toEpochMilli())
.build());
plans.add(SubscriptionPlan.Builder
.createRecurringMonthly(ZonedDateTime.parse("2017-03-14T00:00:00.000Z"))
.setTitle("G-Mobile, Throttled after limit")
.setDataLimit(5 * TrafficStats.GB_IN_BYTES,
SubscriptionPlan.LIMIT_BEHAVIOR_THROTTLED)
.setDataUsage(5 * TrafficStats.GB_IN_BYTES,
ZonedDateTime.now().minusHours(1).toInstant().toEpochMilli())
.build());
plans.add(SubscriptionPlan.Builder
.createRecurringMonthly(ZonedDateTime.parse("2017-03-14T00:00:00.000Z"))
.setTitle("G-Mobile, No data connection after limit")
.setDataLimit(5 * TrafficStats.GB_IN_BYTES,
SubscriptionPlan.LIMIT_BEHAVIOR_DISABLED)
.setDataUsage(5 * TrafficStats.GB_IN_BYTES,
ZonedDateTime.now().minusHours(1).toInstant().toEpochMilli())
.build());
} else if ("month_over".equals(fake)) {
plans.add(SubscriptionPlan.Builder
.createRecurringMonthly(ZonedDateTime.parse("2007-03-14T00:00:00.000Z"))
.setTitle("G-Mobile is the carriers name who this plan belongs to")
.setDataLimit(5 * TrafficStats.GB_IN_BYTES,
SubscriptionPlan.LIMIT_BEHAVIOR_THROTTLED)
.setDataUsage(6 * TrafficStats.GB_IN_BYTES,
ZonedDateTime.now().minusHours(1).toInstant().toEpochMilli())
.build());
plans.add(SubscriptionPlan.Builder
.createRecurringMonthly(ZonedDateTime.parse("2017-03-14T00:00:00.000Z"))
.setTitle("G-Mobile, Throttled after limit")
.setDataLimit(5 * TrafficStats.GB_IN_BYTES,
SubscriptionPlan.LIMIT_BEHAVIOR_THROTTLED)
.setDataUsage(5 * TrafficStats.GB_IN_BYTES,
ZonedDateTime.now().minusHours(1).toInstant().toEpochMilli())
.build());
plans.add(SubscriptionPlan.Builder
.createRecurringMonthly(ZonedDateTime.parse("2017-03-14T00:00:00.000Z"))
.setTitle("G-Mobile, No data connection after limit")
.setDataLimit(5 * TrafficStats.GB_IN_BYTES,
SubscriptionPlan.LIMIT_BEHAVIOR_DISABLED)
.setDataUsage(5 * TrafficStats.GB_IN_BYTES,
ZonedDateTime.now().minusHours(1).toInstant().toEpochMilli())
.build());
} else if ("month_none".equals(fake)) {
plans.add(SubscriptionPlan.Builder
.createRecurringMonthly(ZonedDateTime.parse("2007-03-14T00:00:00.000Z"))
.setTitle("G-Mobile")
.build());
} else if ("prepaid".equals(fake)) {
plans.add(SubscriptionPlan.Builder
.createNonrecurring(ZonedDateTime.now().minusDays(20),
ZonedDateTime.now().plusDays(10))
.setTitle("G-Mobile")
.setDataLimit(512 * TrafficStats.MB_IN_BYTES,
SubscriptionPlan.LIMIT_BEHAVIOR_DISABLED)
.setDataUsage(100 * TrafficStats.MB_IN_BYTES,
ZonedDateTime.now().minusHours(3).toInstant().toEpochMilli())
.build());
} else if ("prepaid_crazy".equals(fake)) {
plans.add(SubscriptionPlan.Builder
.createNonrecurring(ZonedDateTime.now().minusDays(20),
ZonedDateTime.now().plusDays(10))
.setTitle("G-Mobile Anytime")
.setDataLimit(512 * TrafficStats.MB_IN_BYTES,
SubscriptionPlan.LIMIT_BEHAVIOR_DISABLED)
.setDataUsage(100 * TrafficStats.MB_IN_BYTES,
ZonedDateTime.now().minusHours(3).toInstant().toEpochMilli())
.build());
plans.add(SubscriptionPlan.Builder
.createNonrecurring(ZonedDateTime.now().minusDays(10),
ZonedDateTime.now().plusDays(20))
.setTitle("G-Mobile Nickel Nights")
.setSummary("5¢/GB between 1-5AM")
.setDataLimit(5 * TrafficStats.GB_IN_BYTES,
SubscriptionPlan.LIMIT_BEHAVIOR_THROTTLED)
.setDataUsage(15 * TrafficStats.MB_IN_BYTES,
ZonedDateTime.now().minusHours(30).toInstant().toEpochMilli())
.build());
plans.add(SubscriptionPlan.Builder
.createNonrecurring(ZonedDateTime.now().minusDays(10),
ZonedDateTime.now().plusDays(20))
.setTitle("G-Mobile Bonus 3G")
.setSummary("Unlimited 3G data")
.setDataLimit(1 * TrafficStats.GB_IN_BYTES,
SubscriptionPlan.LIMIT_BEHAVIOR_THROTTLED)
.setDataUsage(300 * TrafficStats.MB_IN_BYTES,
ZonedDateTime.now().minusHours(1).toInstant().toEpochMilli())
.build());
} else if ("unlimited".equals(fake)) {
plans.add(SubscriptionPlan.Builder
.createNonrecurring(ZonedDateTime.now().minusDays(20),
ZonedDateTime.now().plusDays(10))
.setTitle("G-Mobile Awesome")
.setDataLimit(SubscriptionPlan.BYTES_UNLIMITED,
SubscriptionPlan.LIMIT_BEHAVIOR_THROTTLED)
.setDataUsage(50 * TrafficStats.MB_IN_BYTES,
ZonedDateTime.now().minusHours(3).toInstant().toEpochMilli())
.build());
}
return plans.toArray(new SubscriptionPlan[plans.size()]);
}
synchronized (mNetworkPoliciesSecondLock) {
// Only give out plan details to the package that defined them,
// so that we don't risk leaking plans between apps. We always
// let in core system components (like the Settings app).
final String ownerPackage = mSubscriptionPlansOwner.get(subId);
if (Objects.equals(ownerPackage, callingPackage)
|| (UserHandle.getCallingAppId() == android.os.Process.SYSTEM_UID)) {
return mSubscriptionPlans.get(subId);
} else {
Log.w(TAG, "Not returning plans because caller " + callingPackage
+ " doesn't match owner " + ownerPackage);
return null;
}
}
}
@Override
public void setSubscriptionPlans(int subId, SubscriptionPlan[] plans, String callingPackage) {
enforceSubscriptionPlanAccess(subId, Binder.getCallingUid(), callingPackage);
for (SubscriptionPlan plan : plans) {
Preconditions.checkNotNull(plan);
}
final long token = Binder.clearCallingIdentity();
try {
synchronized (mUidRulesFirstLock) {
synchronized (mNetworkPoliciesSecondLock) {
mSubscriptionPlans.put(subId, plans);
mSubscriptionPlansOwner.put(subId, callingPackage);
final String subscriberId = mSubIdToSubscriberId.get(subId, null);
if (subscriberId != null) {
ensureActiveMobilePolicyAL(subId, subscriberId);
maybeUpdateMobilePolicyCycleAL(subId, subscriberId);
} else {
Slog.wtf(TAG, "Missing subscriberId for subId " + subId);
}
handleNetworkPoliciesUpdateAL(true);
}
}
final Intent intent = new Intent(SubscriptionManager.ACTION_SUBSCRIPTION_PLANS_CHANGED);
intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY);
intent.putExtra(SubscriptionManager.EXTRA_SUBSCRIPTION_INDEX, subId);
mContext.sendBroadcast(intent, android.Manifest.permission.MANAGE_SUBSCRIPTION_PLANS);
} finally {
Binder.restoreCallingIdentity(token);
}
}
/**
* Only visible for testing purposes. This doesn't give any access to
* existing plans; it simply lets the debug package define new plans.
*/
void setSubscriptionPlansOwner(int subId, String packageName) {
SystemProperties.set(PROP_SUB_PLAN_OWNER + "." + subId, packageName);
}
@Override
public String getSubscriptionPlansOwner(int subId) {
if (UserHandle.getCallingAppId() != android.os.Process.SYSTEM_UID) {
throw new SecurityException();
}
synchronized (mNetworkPoliciesSecondLock) {
return mSubscriptionPlansOwner.get(subId);
}
}
@Override
public void setSubscriptionOverride(int subId, int overrideMask, int overrideValue,
long timeoutMillis, String callingPackage) {
enforceSubscriptionPlanAccess(subId, Binder.getCallingUid(), callingPackage);
// We can only override when carrier told us about plans
synchronized (mNetworkPoliciesSecondLock) {
final SubscriptionPlan plan = getPrimarySubscriptionPlanLocked(subId);
if (plan == null
|| plan.getDataLimitBehavior() == SubscriptionPlan.LIMIT_BEHAVIOR_UNKNOWN) {
throw new IllegalStateException(
"Must provide valid SubscriptionPlan to enable overriding");
}
}
// Only allow overrides when feature is enabled. However, we always
// allow disabling of overrides for safety reasons.
final boolean overrideEnabled = Settings.Global.getInt(mContext.getContentResolver(),
NETPOLICY_OVERRIDE_ENABLED, 1) != 0;
if (overrideEnabled || overrideValue == 0) {
mHandler.sendMessage(mHandler.obtainMessage(MSG_SUBSCRIPTION_OVERRIDE,
overrideMask, overrideValue, subId));
if (timeoutMillis > 0) {
mHandler.sendMessageDelayed(mHandler.obtainMessage(MSG_SUBSCRIPTION_OVERRIDE,
overrideMask, 0, subId), timeoutMillis);
}
}
}
@Override
protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) {
if (!DumpUtils.checkDumpPermission(mContext, TAG, writer)) return;
final IndentingPrintWriter fout = new IndentingPrintWriter(writer, " ");
final ArraySet argSet = new ArraySet(args.length);
for (String arg : args) {
argSet.add(arg);
}
synchronized (mUidRulesFirstLock) {
synchronized (mNetworkPoliciesSecondLock) {
if (argSet.contains("--unsnooze")) {
for (int i = mNetworkPolicy.size()-1; i >= 0; i--) {
mNetworkPolicy.valueAt(i).clearSnooze();
}
handleNetworkPoliciesUpdateAL(true);
fout.println("Cleared snooze timestamps");
return;
}
fout.print("System ready: "); fout.println(mSystemReady);
fout.print("Restrict background: "); fout.println(mRestrictBackground);
fout.print("Restrict power: "); fout.println(mRestrictPower);
fout.print("Device idle: "); fout.println(mDeviceIdleMode);
fout.print("Metered ifaces: "); fout.println(String.valueOf(mMeteredIfaces));
fout.println();
fout.println("Network policies:");
fout.increaseIndent();
for (int i = 0; i < mNetworkPolicy.size(); i++) {
fout.println(mNetworkPolicy.valueAt(i).toString());
}
fout.decreaseIndent();
fout.println();
fout.println("Subscription plans:");
fout.increaseIndent();
for (int i = 0; i < mSubscriptionPlans.size(); i++) {
final int subId = mSubscriptionPlans.keyAt(i);
fout.println("Subscriber ID " + subId + ":");
fout.increaseIndent();
final SubscriptionPlan[] plans = mSubscriptionPlans.valueAt(i);
if (!ArrayUtils.isEmpty(plans)) {
for (SubscriptionPlan plan : plans) {
fout.println(plan);
}
}
fout.decreaseIndent();
}
fout.decreaseIndent();
fout.println();
fout.println("Active subscriptions:");
fout.increaseIndent();
for (int i = 0; i < mSubIdToSubscriberId.size(); i++) {
final int subId = mSubIdToSubscriberId.keyAt(i);
final String subscriberId = mSubIdToSubscriberId.valueAt(i);
fout.println(subId + "=" + NetworkIdentity.scrubSubscriberId(subscriberId));
}
fout.decreaseIndent();
fout.println();
fout.println("Merged subscriptions: "
+ Arrays.toString(NetworkIdentity.scrubSubscriberId(mMergedSubscriberIds)));
fout.println();
fout.println("Policy for UIDs:");
fout.increaseIndent();
int size = mUidPolicy.size();
for (int i = 0; i < size; i++) {
final int uid = mUidPolicy.keyAt(i);
final int policy = mUidPolicy.valueAt(i);
fout.print("UID=");
fout.print(uid);
fout.print(" policy=");
fout.print(uidPoliciesToString(policy));
fout.println();
}
fout.decreaseIndent();
size = mPowerSaveWhitelistExceptIdleAppIds.size();
if (size > 0) {
fout.println("Power save whitelist (except idle) app ids:");
fout.increaseIndent();
for (int i = 0; i < size; i++) {
fout.print("UID=");
fout.print(mPowerSaveWhitelistExceptIdleAppIds.keyAt(i));
fout.print(": ");
fout.print(mPowerSaveWhitelistExceptIdleAppIds.valueAt(i));
fout.println();
}
fout.decreaseIndent();
}
size = mPowerSaveWhitelistAppIds.size();
if (size > 0) {
fout.println("Power save whitelist app ids:");
fout.increaseIndent();
for (int i = 0; i < size; i++) {
fout.print("UID=");
fout.print(mPowerSaveWhitelistAppIds.keyAt(i));
fout.print(": ");
fout.print(mPowerSaveWhitelistAppIds.valueAt(i));
fout.println();
}
fout.decreaseIndent();
}
size = mDefaultRestrictBackgroundWhitelistUids.size();
if (size > 0) {
fout.println("Default restrict background whitelist uids:");
fout.increaseIndent();
for (int i = 0; i < size; i++) {
fout.print("UID=");
fout.print(mDefaultRestrictBackgroundWhitelistUids.keyAt(i));
fout.println();
}
fout.decreaseIndent();
}
size = mRestrictBackgroundWhitelistRevokedUids.size();
if (size > 0) {
fout.println("Default restrict background whitelist uids revoked by users:");
fout.increaseIndent();
for (int i = 0; i < size; i++) {
fout.print("UID=");
fout.print(mRestrictBackgroundWhitelistRevokedUids.keyAt(i));
fout.println();
}
fout.decreaseIndent();
}
final SparseBooleanArray knownUids = new SparseBooleanArray();
collectKeys(mUidState, knownUids);
collectKeys(mUidRules, knownUids);
fout.println("Status for all known UIDs:");
fout.increaseIndent();
size = knownUids.size();
for (int i = 0; i < size; i++) {
final int uid = knownUids.keyAt(i);
fout.print("UID=");
fout.print(uid);
final int state = mUidState.get(uid, ActivityManager.PROCESS_STATE_CACHED_EMPTY);
fout.print(" state=");
fout.print(state);
if (state <= ActivityManager.PROCESS_STATE_TOP) {
fout.print(" (fg)");
} else {
fout.print(state <= ActivityManager.PROCESS_STATE_BOUND_FOREGROUND_SERVICE
? " (fg svc)" : " (bg)");
}
final int uidRules = mUidRules.get(uid, RULE_NONE);
fout.print(" rules=");
fout.print(uidRulesToString(uidRules));
fout.println();
}
fout.decreaseIndent();
fout.println("Status for just UIDs with rules:");
fout.increaseIndent();
size = mUidRules.size();
for (int i = 0; i < size; i++) {
final int uid = mUidRules.keyAt(i);
fout.print("UID=");
fout.print(uid);
final int uidRules = mUidRules.get(uid, RULE_NONE);
fout.print(" rules=");
fout.print(uidRulesToString(uidRules));
fout.println();
}
fout.decreaseIndent();
fout.println("Admin restricted uids for metered data:");
fout.increaseIndent();
size = mMeteredRestrictedUids.size();
for (int i = 0; i < size; ++i) {
fout.print("u" + mMeteredRestrictedUids.keyAt(i) + ": ");
fout.println(mMeteredRestrictedUids.valueAt(i));
}
fout.decreaseIndent();
fout.println();
mStatLogger.dump(fout);
mLogger.dumpLogs(fout);
}
}
}
@Override
public void onShellCommand(FileDescriptor in, FileDescriptor out, FileDescriptor err,
String[] args, ShellCallback callback, ResultReceiver resultReceiver) {
(new NetworkPolicyManagerShellCommand(mContext, this)).exec(
this, in, out, err, args, callback, resultReceiver);
}
@VisibleForTesting
public boolean isUidForeground(int uid) {
synchronized (mUidRulesFirstLock) {
return isUidStateForeground(
mUidState.get(uid, ActivityManager.PROCESS_STATE_CACHED_EMPTY));
}
}
private boolean isUidForegroundOnRestrictBackgroundUL(int uid) {
final int procState = mUidState.get(uid, ActivityManager.PROCESS_STATE_CACHED_EMPTY);
return isProcStateAllowedWhileOnRestrictBackground(procState);
}
private boolean isUidForegroundOnRestrictPowerUL(int uid) {
final int procState = mUidState.get(uid, ActivityManager.PROCESS_STATE_CACHED_EMPTY);
return isProcStateAllowedWhileIdleOrPowerSaveMode(procState);
}
private boolean isUidStateForeground(int state) {
// only really in foreground when screen is also on
return state <= NetworkPolicyManager.FOREGROUND_THRESHOLD_STATE;
}
/**
* Process state of UID changed; if needed, will trigger
* {@link #updateRulesForDataUsageRestrictionsUL(int)} and
* {@link #updateRulesForPowerRestrictionsUL(int)}
*/
private void updateUidStateUL(int uid, int uidState) {
Trace.traceBegin(Trace.TRACE_TAG_NETWORK, "updateUidStateUL");
try {
final int oldUidState = mUidState.get(uid, ActivityManager.PROCESS_STATE_CACHED_EMPTY);
if (oldUidState != uidState) {
// state changed, push updated rules
mUidState.put(uid, uidState);
updateRestrictBackgroundRulesOnUidStatusChangedUL(uid, oldUidState, uidState);
if (isProcStateAllowedWhileIdleOrPowerSaveMode(oldUidState)
!= isProcStateAllowedWhileIdleOrPowerSaveMode(uidState) ) {
updateRuleForAppIdleUL(uid);
if (mDeviceIdleMode) {
updateRuleForDeviceIdleUL(uid);
}
if (mRestrictPower) {
updateRuleForRestrictPowerUL(uid);
}
updateRulesForPowerRestrictionsUL(uid);
}
updateNetworkStats(uid, isUidStateForeground(uidState));
}
} finally {
Trace.traceEnd(Trace.TRACE_TAG_NETWORK);
}
}
private void removeUidStateUL(int uid) {
final int index = mUidState.indexOfKey(uid);
if (index >= 0) {
final int oldUidState = mUidState.valueAt(index);
mUidState.removeAt(index);
if (oldUidState != ActivityManager.PROCESS_STATE_CACHED_EMPTY) {
updateRestrictBackgroundRulesOnUidStatusChangedUL(uid, oldUidState,
ActivityManager.PROCESS_STATE_CACHED_EMPTY);
if (mDeviceIdleMode) {
updateRuleForDeviceIdleUL(uid);
}
if (mRestrictPower) {
updateRuleForRestrictPowerUL(uid);
}
updateRulesForPowerRestrictionsUL(uid);
updateNetworkStats(uid, false);
}
}
}
// adjust stats accounting based on foreground status
private void updateNetworkStats(int uid, boolean uidForeground) {
if (Trace.isTagEnabled(Trace.TRACE_TAG_NETWORK)) {
Trace.traceBegin(Trace.TRACE_TAG_NETWORK,
"updateNetworkStats: " + uid + "/" + (uidForeground ? "F" : "B"));
}
try {
mNetworkStats.setUidForeground(uid, uidForeground);
} finally {
Trace.traceEnd(Trace.TRACE_TAG_NETWORK);
}
}
private void updateRestrictBackgroundRulesOnUidStatusChangedUL(int uid, int oldUidState,
int newUidState) {
final boolean oldForeground =
isProcStateAllowedWhileOnRestrictBackground(oldUidState);
final boolean newForeground =
isProcStateAllowedWhileOnRestrictBackground(newUidState);
if (oldForeground != newForeground) {
updateRulesForDataUsageRestrictionsUL(uid);
}
}
void updateRulesForPowerSaveUL() {
Trace.traceBegin(Trace.TRACE_TAG_NETWORK, "updateRulesForPowerSaveUL");
try {
updateRulesForWhitelistedPowerSaveUL(mRestrictPower, FIREWALL_CHAIN_POWERSAVE,
mUidFirewallPowerSaveRules);
} finally {
Trace.traceEnd(Trace.TRACE_TAG_NETWORK);
}
}
void updateRuleForRestrictPowerUL(int uid) {
updateRulesForWhitelistedPowerSaveUL(uid, mRestrictPower, FIREWALL_CHAIN_POWERSAVE);
}
void updateRulesForDeviceIdleUL() {
Trace.traceBegin(Trace.TRACE_TAG_NETWORK, "updateRulesForDeviceIdleUL");
try {
updateRulesForWhitelistedPowerSaveUL(mDeviceIdleMode, FIREWALL_CHAIN_DOZABLE,
mUidFirewallDozableRules);
} finally {
Trace.traceEnd(Trace.TRACE_TAG_NETWORK);
}
}
void updateRuleForDeviceIdleUL(int uid) {
updateRulesForWhitelistedPowerSaveUL(uid, mDeviceIdleMode, FIREWALL_CHAIN_DOZABLE);
}
// NOTE: since both fw_dozable and fw_powersave uses the same map
// (mPowerSaveTempWhitelistAppIds) for whitelisting, we can reuse their logic in this method.
private void updateRulesForWhitelistedPowerSaveUL(boolean enabled, int chain,
SparseIntArray rules) {
if (enabled) {
// Sync the whitelists before enabling the chain. We don't care about the rules if
// we are disabling the chain.
final SparseIntArray uidRules = rules;
uidRules.clear();
final List users = mUserManager.getUsers();
for (int ui = users.size() - 1; ui >= 0; ui--) {
UserInfo user = users.get(ui);
updateRulesForWhitelistedAppIds(uidRules, mPowerSaveTempWhitelistAppIds, user.id);
updateRulesForWhitelistedAppIds(uidRules, mPowerSaveWhitelistAppIds, user.id);
if (chain == FIREWALL_CHAIN_POWERSAVE) {
updateRulesForWhitelistedAppIds(uidRules,
mPowerSaveWhitelistExceptIdleAppIds, user.id);
}
}
for (int i = mUidState.size() - 1; i >= 0; i--) {
if (isProcStateAllowedWhileIdleOrPowerSaveMode(mUidState.valueAt(i))) {
uidRules.put(mUidState.keyAt(i), FIREWALL_RULE_ALLOW);
}
}
setUidFirewallRulesUL(chain, uidRules, CHAIN_TOGGLE_ENABLE);
} else {
setUidFirewallRulesUL(chain, null, CHAIN_TOGGLE_DISABLE);
}
}
private void updateRulesForWhitelistedAppIds(final SparseIntArray uidRules,
final SparseBooleanArray whitelistedAppIds, int userId) {
for (int i = whitelistedAppIds.size() - 1; i >= 0; --i) {
if (whitelistedAppIds.valueAt(i)) {
final int appId = whitelistedAppIds.keyAt(i);
final int uid = UserHandle.getUid(userId, appId);
uidRules.put(uid, FIREWALL_RULE_ALLOW);
}
}
}
/**
* @param deviceIdleMode if true then we don't consider
* {@link #mPowerSaveWhitelistExceptIdleAppIds} for checking if the {@param uid} is
* whitelisted.
*/
private boolean isWhitelistedBatterySaverUL(int uid, boolean deviceIdleMode) {
final int appId = UserHandle.getAppId(uid);
boolean isWhitelisted = mPowerSaveTempWhitelistAppIds.get(appId)
|| mPowerSaveWhitelistAppIds.get(appId);
if (!deviceIdleMode) {
isWhitelisted = isWhitelisted || mPowerSaveWhitelistExceptIdleAppIds.get(appId);
}
return isWhitelisted;
}
// NOTE: since both fw_dozable and fw_powersave uses the same map
// (mPowerSaveTempWhitelistAppIds) for whitelisting, we can reuse their logic in this method.
private void updateRulesForWhitelistedPowerSaveUL(int uid, boolean enabled, int chain) {
if (enabled) {
final boolean isWhitelisted = isWhitelistedBatterySaverUL(uid,
chain == FIREWALL_CHAIN_DOZABLE);
if (isWhitelisted || isUidForegroundOnRestrictPowerUL(uid)) {
setUidFirewallRule(chain, uid, FIREWALL_RULE_ALLOW);
} else {
setUidFirewallRule(chain, uid, FIREWALL_RULE_DEFAULT);
}
}
}
void updateRulesForAppIdleUL() {
Trace.traceBegin(Trace.TRACE_TAG_NETWORK, "updateRulesForAppIdleUL");
try {
final SparseIntArray uidRules = mUidFirewallStandbyRules;
uidRules.clear();
// Fully update the app idle firewall chain.
final List users = mUserManager.getUsers();
for (int ui = users.size() - 1; ui >= 0; ui--) {
UserInfo user = users.get(ui);
int[] idleUids = mUsageStats.getIdleUidsForUser(user.id);
for (int uid : idleUids) {
if (!mPowerSaveTempWhitelistAppIds.get(UserHandle.getAppId(uid), false)) {
// quick check: if this uid doesn't have INTERNET permission, it
// doesn't have network access anyway, so it is a waste to mess
// with it here.
if (hasInternetPermissions(uid)) {
uidRules.put(uid, FIREWALL_RULE_DENY);
}
}
}
}
setUidFirewallRulesUL(FIREWALL_CHAIN_STANDBY, uidRules, CHAIN_TOGGLE_NONE);
} finally {
Trace.traceEnd(Trace.TRACE_TAG_NETWORK);
}
}
void updateRuleForAppIdleUL(int uid) {
if (!isUidValidForBlacklistRules(uid)) return;
if (Trace.isTagEnabled(Trace.TRACE_TAG_NETWORK)) {
Trace.traceBegin(Trace.TRACE_TAG_NETWORK, "updateRuleForAppIdleUL: " + uid );
}
try {
int appId = UserHandle.getAppId(uid);
if (!mPowerSaveTempWhitelistAppIds.get(appId) && isUidIdle(uid)
&& !isUidForegroundOnRestrictPowerUL(uid)) {
setUidFirewallRule(FIREWALL_CHAIN_STANDBY, uid, FIREWALL_RULE_DENY);
} else {
setUidFirewallRule(FIREWALL_CHAIN_STANDBY, uid, FIREWALL_RULE_DEFAULT);
}
} finally {
Trace.traceEnd(Trace.TRACE_TAG_NETWORK);
}
}
/**
* Toggle the firewall standby chain and inform listeners if the uid rules have effectively
* changed.
*/
void updateRulesForAppIdleParoleUL() {
boolean paroled = mUsageStats.isAppIdleParoleOn();
boolean enableChain = !paroled;
enableFirewallChainUL(FIREWALL_CHAIN_STANDBY, enableChain);
int ruleCount = mUidFirewallStandbyRules.size();
for (int i = 0; i < ruleCount; i++) {
int uid = mUidFirewallStandbyRules.keyAt(i);
int oldRules = mUidRules.get(uid);
if (enableChain) {
// Chain wasn't enabled before and the other power-related
// chains are whitelists, so we can clear the
// MASK_ALL_NETWORKS part of the rules and re-inform listeners if
// the effective rules result in blocking network access.
oldRules &= MASK_METERED_NETWORKS;
} else {
// Skip if it had no restrictions to begin with
if ((oldRules & MASK_ALL_NETWORKS) == 0) continue;
}
final int newUidRules = updateRulesForPowerRestrictionsUL(uid, oldRules, paroled);
if (newUidRules == RULE_NONE) {
mUidRules.delete(uid);
} else {
mUidRules.put(uid, newUidRules);
}
}
}
/**
* Update rules that might be changed by {@link #mRestrictBackground},
* {@link #mRestrictPower}, or {@link #mDeviceIdleMode} value.
*/
private void updateRulesForGlobalChangeAL(boolean restrictedNetworksChanged) {
if (Trace.isTagEnabled(Trace.TRACE_TAG_NETWORK)) {
Trace.traceBegin(Trace.TRACE_TAG_NETWORK,
"updateRulesForGlobalChangeAL: " + (restrictedNetworksChanged ? "R" : "-"));
}
try {
updateRulesForAppIdleUL();
updateRulesForRestrictPowerUL();
updateRulesForRestrictBackgroundUL();
// If the set of restricted networks may have changed, re-evaluate those.
if (restrictedNetworksChanged) {
normalizePoliciesNL();
updateNetworkRulesNL();
}
} finally {
Trace.traceEnd(Trace.TRACE_TAG_NETWORK);
}
}
// TODO: rename / document to make it clear these are global (not app-specific) rules
private void updateRulesForRestrictPowerUL() {
Trace.traceBegin(Trace.TRACE_TAG_NETWORK, "updateRulesForRestrictPowerUL");
try {
updateRulesForDeviceIdleUL();
updateRulesForPowerSaveUL();
updateRulesForAllAppsUL(TYPE_RESTRICT_POWER);
} finally {
Trace.traceEnd(Trace.TRACE_TAG_NETWORK);
}
}
private void updateRulesForRestrictBackgroundUL() {
Trace.traceBegin(Trace.TRACE_TAG_NETWORK, "updateRulesForRestrictBackgroundUL");
try {
updateRulesForAllAppsUL(TYPE_RESTRICT_BACKGROUND);
} finally {
Trace.traceEnd(Trace.TRACE_TAG_NETWORK);
}
}
private static final int TYPE_RESTRICT_BACKGROUND = 1;
private static final int TYPE_RESTRICT_POWER = 2;
@Retention(RetentionPolicy.SOURCE)
@IntDef(flag = false, value = {
TYPE_RESTRICT_BACKGROUND,
TYPE_RESTRICT_POWER,
})
public @interface RestrictType {
}
// TODO: refactor / consolidate all those updateXyz methods, there are way too many of them...
private void updateRulesForAllAppsUL(@RestrictType int type) {
if (Trace.isTagEnabled(Trace.TRACE_TAG_NETWORK)) {
Trace.traceBegin(Trace.TRACE_TAG_NETWORK, "updateRulesForRestrictPowerUL-" + type);
}
try {
// update rules for all installed applications
final PackageManager pm = mContext.getPackageManager();
final List users;
final List apps;
Trace.traceBegin(Trace.TRACE_TAG_NETWORK, "list-users");
try {
users = mUserManager.getUsers();
} finally {
Trace.traceEnd(Trace.TRACE_TAG_NETWORK);
}
Trace.traceBegin(Trace.TRACE_TAG_NETWORK, "list-uids");
try {
apps = pm.getInstalledApplications(
PackageManager.MATCH_ANY_USER | PackageManager.MATCH_DISABLED_COMPONENTS
| PackageManager.MATCH_DIRECT_BOOT_AWARE
| PackageManager.MATCH_DIRECT_BOOT_UNAWARE);
} finally {
Trace.traceEnd(Trace.TRACE_TAG_NETWORK);
}
final int usersSize = users.size();
final int appsSize = apps.size();
for (int i = 0; i < usersSize; i++) {
final UserInfo user = users.get(i);
for (int j = 0; j < appsSize; j++) {
final ApplicationInfo app = apps.get(j);
final int uid = UserHandle.getUid(user.id, app.uid);
switch (type) {
case TYPE_RESTRICT_BACKGROUND:
updateRulesForDataUsageRestrictionsUL(uid);
break;
case TYPE_RESTRICT_POWER:
updateRulesForPowerRestrictionsUL(uid);
break;
default:
Slog.w(TAG, "Invalid type for updateRulesForAllApps: " + type);
}
}
}
} finally {
Trace.traceEnd(Trace.TRACE_TAG_NETWORK);
}
}
private void updateRulesForTempWhitelistChangeUL(int appId) {
final List users = mUserManager.getUsers();
final int numUsers = users.size();
for (int i = 0; i < numUsers; i++) {
final UserInfo user = users.get(i);
int uid = UserHandle.getUid(user.id, appId);
// Update external firewall rules.
updateRuleForAppIdleUL(uid);
updateRuleForDeviceIdleUL(uid);
updateRuleForRestrictPowerUL(uid);
// Update internal rules.
updateRulesForPowerRestrictionsUL(uid);
}
}
// TODO: the MEDIA / DRM restriction might not be needed anymore, in which case both
// methods below could be merged into a isUidValidForRules() method.
private boolean isUidValidForBlacklistRules(int uid) {
// allow rules on specific system services, and any apps
if (uid == android.os.Process.MEDIA_UID || uid == android.os.Process.DRM_UID
|| (UserHandle.isApp(uid) && hasInternetPermissions(uid))) {
return true;
}
return false;
}
private boolean isUidValidForWhitelistRules(int uid) {
return UserHandle.isApp(uid) && hasInternetPermissions(uid);
}
private boolean isUidIdle(int uid) {
final String[] packages = mContext.getPackageManager().getPackagesForUid(uid);
final int userId = UserHandle.getUserId(uid);
if (packages != null) {
for (String packageName : packages) {
if (!mUsageStats.isAppIdle(packageName, uid, userId)) {
return false;
}
}
}
return true;
}
/**
* Checks if an uid has INTERNET permissions.
*
* Useful for the cases where the lack of network access can simplify the rules.
*/
private boolean hasInternetPermissions(int uid) {
try {
if (mIPm.checkUidPermission(Manifest.permission.INTERNET, uid)
!= PackageManager.PERMISSION_GRANTED) {
return false;
}
} catch (RemoteException e) {
}
return true;
}
/**
* Clears all state - internal and external - associated with an UID.
*/
private void onUidDeletedUL(int uid) {
// First cleanup in-memory state synchronously...
mUidRules.delete(uid);
mUidPolicy.delete(uid);
mUidFirewallStandbyRules.delete(uid);
mUidFirewallDozableRules.delete(uid);
mUidFirewallPowerSaveRules.delete(uid);
mPowerSaveWhitelistExceptIdleAppIds.delete(uid);
mPowerSaveWhitelistAppIds.delete(uid);
mPowerSaveTempWhitelistAppIds.delete(uid);
// ...then update iptables asynchronously.
mHandler.obtainMessage(MSG_RESET_FIREWALL_RULES_BY_UID, uid, 0).sendToTarget();
}
/**
* Applies network rules to bandwidth and firewall controllers based on uid policy.
*
*
There are currently 4 types of restriction rules:
*
* - Doze mode
*
- App idle mode
*
- Battery Saver Mode (also referred as power save).
*
- Data Saver Mode (The Feature Formerly Known As 'Restrict Background Data').
*
*
* This method changes both the external firewall rules and the internal state.
*/
private void updateRestrictionRulesForUidUL(int uid) {
// Methods below only changes the firewall rules for the power-related modes.
updateRuleForDeviceIdleUL(uid);
updateRuleForAppIdleUL(uid);
updateRuleForRestrictPowerUL(uid);
// Update internal state for power-related modes.
updateRulesForPowerRestrictionsUL(uid);
// Update firewall and internal rules for Data Saver Mode.
updateRulesForDataUsageRestrictionsUL(uid);
}
/**
* Applies network rules to bandwidth controllers based on process state and user-defined
* restrictions (blacklist / whitelist).
*
*
* {@code netd} defines 3 firewall chains that govern whether an app has access to metered
* networks:
*
* - @{code bw_penalty_box}: UIDs added to this chain do not have access (blacklist).
*
- @{code bw_happy_box}: UIDs added to this chain have access (whitelist), unless they're
* also blacklisted.
*
- @{code bw_data_saver}: when enabled (through {@link #setRestrictBackground(boolean)}),
* no UIDs other those whitelisted will have access.
*
*
* The @{code bw_penalty_box} and @{code bw_happy_box} are primarily managed through the
* {@link #setUidPolicy(int, int)} and {@link #addRestrictBackgroundWhitelistedUid(int)} /
* {@link #removeRestrictBackgroundWhitelistedUid(int)} methods (for blacklist and whitelist
* respectively): these methods set the proper internal state (blacklist / whitelist), then call
* this ({@link #updateRulesForDataUsageRestrictionsUL(int)}) to propagate the rules to
* {@link INetworkManagementService}, but this method should also be called in events (like
* Data Saver Mode flips or UID state changes) that might affect the foreground app, since the
* following rules should also be applied:
*
*
* - When Data Saver mode is on, the foreground app should be temporarily added to
* {@code bw_happy_box} before the @{code bw_data_saver} chain is enabled.
*
- If the foreground app is blacklisted by the user, it should be temporarily removed from
* {@code bw_penalty_box}.
*
- When the app leaves foreground state, the temporary changes above should be reverted.
*
*
* For optimization, the rules are only applied on user apps that have internet access
* permission, since there is no need to change the {@code iptables} rule if the app does not
* have permission to use the internet.
*
*
The {@link #mUidRules} map is used to define the transtion of states of an UID.
*
*/
private void updateRulesForDataUsageRestrictionsUL(int uid) {
if (Trace.isTagEnabled(Trace.TRACE_TAG_NETWORK)) {
Trace.traceBegin(Trace.TRACE_TAG_NETWORK,
"updateRulesForDataUsageRestrictionsUL: " + uid);
}
try {
updateRulesForDataUsageRestrictionsULInner(uid);
} finally {
Trace.traceEnd(Trace.TRACE_TAG_NETWORK);
}
}
private void updateRulesForDataUsageRestrictionsULInner(int uid) {
if (!isUidValidForWhitelistRules(uid)) {
if (LOGD) Slog.d(TAG, "no need to update restrict data rules for uid " + uid);
return;
}
final int uidPolicy = mUidPolicy.get(uid, POLICY_NONE);
final int oldUidRules = mUidRules.get(uid, RULE_NONE);
final boolean isForeground = isUidForegroundOnRestrictBackgroundUL(uid);
final boolean isRestrictedByAdmin = isRestrictedByAdminUL(uid);
final boolean isBlacklisted = (uidPolicy & POLICY_REJECT_METERED_BACKGROUND) != 0;
final boolean isWhitelisted = (uidPolicy & POLICY_ALLOW_METERED_BACKGROUND) != 0;
final int oldRule = oldUidRules & MASK_METERED_NETWORKS;
int newRule = RULE_NONE;
// First step: define the new rule based on user restrictions and foreground state.
if (isRestrictedByAdmin) {
newRule = RULE_REJECT_METERED;
} else if (isForeground) {
if (isBlacklisted || (mRestrictBackground && !isWhitelisted)) {
newRule = RULE_TEMPORARY_ALLOW_METERED;
} else if (isWhitelisted) {
newRule = RULE_ALLOW_METERED;
}
} else {
if (isBlacklisted) {
newRule = RULE_REJECT_METERED;
} else if (mRestrictBackground && isWhitelisted) {
newRule = RULE_ALLOW_METERED;
}
}
final int newUidRules = newRule | (oldUidRules & MASK_ALL_NETWORKS);
if (LOGV) {
Log.v(TAG, "updateRuleForRestrictBackgroundUL(" + uid + ")"
+ ": isForeground=" +isForeground
+ ", isBlacklisted=" + isBlacklisted
+ ", isWhitelisted=" + isWhitelisted
+ ", isRestrictedByAdmin=" + isRestrictedByAdmin
+ ", oldRule=" + uidRulesToString(oldRule)
+ ", newRule=" + uidRulesToString(newRule)
+ ", newUidRules=" + uidRulesToString(newUidRules)
+ ", oldUidRules=" + uidRulesToString(oldUidRules));
}
if (newUidRules == RULE_NONE) {
mUidRules.delete(uid);
} else {
mUidRules.put(uid, newUidRules);
}
// Second step: apply bw changes based on change of state.
if (newRule != oldRule) {
if (hasRule(newRule, RULE_TEMPORARY_ALLOW_METERED)) {
// Temporarily whitelist foreground app, removing from blacklist if necessary
// (since bw_penalty_box prevails over bw_happy_box).
setMeteredNetworkWhitelist(uid, true);
// TODO: if statement below is used to avoid an unnecessary call to netd / iptables,
// but ideally it should be just:
// setMeteredNetworkBlacklist(uid, isBlacklisted);
if (isBlacklisted) {
setMeteredNetworkBlacklist(uid, false);
}
} else if (hasRule(oldRule, RULE_TEMPORARY_ALLOW_METERED)) {
// Remove temporary whitelist from app that is not on foreground anymore.
// TODO: if statements below are used to avoid unnecessary calls to netd / iptables,
// but ideally they should be just:
// setMeteredNetworkWhitelist(uid, isWhitelisted);
// setMeteredNetworkBlacklist(uid, isBlacklisted);
if (!isWhitelisted) {
setMeteredNetworkWhitelist(uid, false);
}
if (isBlacklisted || isRestrictedByAdmin) {
setMeteredNetworkBlacklist(uid, true);
}
} else if (hasRule(newRule, RULE_REJECT_METERED)
|| hasRule(oldRule, RULE_REJECT_METERED)) {
// Flip state because app was explicitly added or removed to blacklist.
setMeteredNetworkBlacklist(uid, (isBlacklisted || isRestrictedByAdmin));
if (hasRule(oldRule, RULE_REJECT_METERED) && isWhitelisted) {
// Since blacklist prevails over whitelist, we need to handle the special case
// where app is whitelisted and blacklisted at the same time (although such
// scenario should be blocked by the UI), then blacklist is removed.
setMeteredNetworkWhitelist(uid, isWhitelisted);
}
} else if (hasRule(newRule, RULE_ALLOW_METERED)
|| hasRule(oldRule, RULE_ALLOW_METERED)) {
// Flip state because app was explicitly added or removed to whitelist.
setMeteredNetworkWhitelist(uid, isWhitelisted);
} else {
// All scenarios should have been covered above.
Log.wtf(TAG, "Unexpected change of metered UID state for " + uid
+ ": foreground=" + isForeground
+ ", whitelisted=" + isWhitelisted
+ ", blacklisted=" + isBlacklisted
+ ", isRestrictedByAdmin=" + isRestrictedByAdmin
+ ", newRule=" + uidRulesToString(newUidRules)
+ ", oldRule=" + uidRulesToString(oldUidRules));
}
// Dispatch changed rule to existing listeners.
mHandler.obtainMessage(MSG_RULES_CHANGED, uid, newUidRules).sendToTarget();
}
}
/**
* Updates the power-related part of the {@link #mUidRules} for a given map, and notify external
* listeners in case of change.
*
* There are 3 power-related rules that affects whether an app has background access on
* non-metered networks, and when the condition applies and the UID is not whitelisted for power
* restriction, it's added to the equivalent firewall chain:
*
* - App is idle: {@code fw_standby} firewall chain.
*
- Device is idle: {@code fw_dozable} firewall chain.
*
- Battery Saver Mode is on: {@code fw_powersave} firewall chain.
*
*
* This method updates the power-related part of the {@link #mUidRules} for a given uid based on
* these modes, the UID process state (foreground or not), and the UIDwhitelist state.
*
* NOTE: This method does not update the firewall rules on {@code netd}.
*/
private void updateRulesForPowerRestrictionsUL(int uid) {
final int oldUidRules = mUidRules.get(uid, RULE_NONE);
final int newUidRules = updateRulesForPowerRestrictionsUL(uid, oldUidRules, false);
if (newUidRules == RULE_NONE) {
mUidRules.delete(uid);
} else {
mUidRules.put(uid, newUidRules);
}
}
/**
* Similar to above but ignores idle state if app standby is currently disabled by parole.
*
* @param uid the uid of the app to update rules for
* @param oldUidRules the current rules for the uid, in order to determine if there's a change
* @param paroled whether to ignore idle state of apps and only look at other restrictions.
*
* @return the new computed rules for the uid
*/
private int updateRulesForPowerRestrictionsUL(int uid, int oldUidRules, boolean paroled) {
if (Trace.isTagEnabled(Trace.TRACE_TAG_NETWORK)) {
Trace.traceBegin(Trace.TRACE_TAG_NETWORK,
"updateRulesForPowerRestrictionsUL: " + uid + "/" + oldUidRules + "/"
+ (paroled ? "P" : "-"));
}
try {
return updateRulesForPowerRestrictionsULInner(uid, oldUidRules, paroled);
} finally {
Trace.traceEnd(Trace.TRACE_TAG_NETWORK);
}
}
private int updateRulesForPowerRestrictionsULInner(int uid, int oldUidRules, boolean paroled) {
if (!isUidValidForBlacklistRules(uid)) {
if (LOGD) Slog.d(TAG, "no need to update restrict power rules for uid " + uid);
return RULE_NONE;
}
final boolean isIdle = !paroled && isUidIdle(uid);
final boolean restrictMode = isIdle || mRestrictPower || mDeviceIdleMode;
final boolean isForeground = isUidForegroundOnRestrictPowerUL(uid);
final boolean isWhitelisted = isWhitelistedBatterySaverUL(uid, mDeviceIdleMode);
final int oldRule = oldUidRules & MASK_ALL_NETWORKS;
int newRule = RULE_NONE;
// First step: define the new rule based on user restrictions and foreground state.
// NOTE: if statements below could be inlined, but it's easier to understand the logic
// by considering the foreground and non-foreground states.
if (isForeground) {
if (restrictMode) {
newRule = RULE_ALLOW_ALL;
}
} else if (restrictMode) {
newRule = isWhitelisted ? RULE_ALLOW_ALL : RULE_REJECT_ALL;
}
final int newUidRules = (oldUidRules & MASK_METERED_NETWORKS) | newRule;
if (LOGV) {
Log.v(TAG, "updateRulesForPowerRestrictionsUL(" + uid + ")"
+ ", isIdle: " + isIdle
+ ", mRestrictPower: " + mRestrictPower
+ ", mDeviceIdleMode: " + mDeviceIdleMode
+ ", isForeground=" + isForeground
+ ", isWhitelisted=" + isWhitelisted
+ ", oldRule=" + uidRulesToString(oldRule)
+ ", newRule=" + uidRulesToString(newRule)
+ ", newUidRules=" + uidRulesToString(newUidRules)
+ ", oldUidRules=" + uidRulesToString(oldUidRules));
}
// Second step: notify listeners if state changed.
if (newRule != oldRule) {
if (newRule == RULE_NONE || hasRule(newRule, RULE_ALLOW_ALL)) {
if (LOGV) Log.v(TAG, "Allowing non-metered access for UID " + uid);
} else if (hasRule(newRule, RULE_REJECT_ALL)) {
if (LOGV) Log.v(TAG, "Rejecting non-metered access for UID " + uid);
} else {
// All scenarios should have been covered above
Log.wtf(TAG, "Unexpected change of non-metered UID state for " + uid
+ ": foreground=" + isForeground
+ ", whitelisted=" + isWhitelisted
+ ", newRule=" + uidRulesToString(newUidRules)
+ ", oldRule=" + uidRulesToString(oldUidRules));
}
mHandler.obtainMessage(MSG_RULES_CHANGED, uid, newUidRules).sendToTarget();
}
return newUidRules;
}
private class AppIdleStateChangeListener
extends UsageStatsManagerInternal.AppIdleStateChangeListener {
@Override
public void onAppIdleStateChanged(String packageName, int userId, boolean idle, int bucket,
int reason) {
try {
final int uid = mContext.getPackageManager().getPackageUidAsUser(packageName,
PackageManager.MATCH_UNINSTALLED_PACKAGES, userId);
synchronized (mUidRulesFirstLock) {
mLogger.appIdleStateChanged(uid, idle);
updateRuleForAppIdleUL(uid);
updateRulesForPowerRestrictionsUL(uid);
}
} catch (NameNotFoundException nnfe) {
}
}
@Override
public void onParoleStateChanged(boolean isParoleOn) {
synchronized (mUidRulesFirstLock) {
mLogger.paroleStateChanged(isParoleOn);
updateRulesForAppIdleParoleUL();
}
}
}
private void dispatchUidRulesChanged(INetworkPolicyListener listener, int uid, int uidRules) {
if (listener != null) {
try {
listener.onUidRulesChanged(uid, uidRules);
} catch (RemoteException ignored) {
}
}
}
private void dispatchMeteredIfacesChanged(INetworkPolicyListener listener,
String[] meteredIfaces) {
if (listener != null) {
try {
listener.onMeteredIfacesChanged(meteredIfaces);
} catch (RemoteException ignored) {
}
}
}
private void dispatchRestrictBackgroundChanged(INetworkPolicyListener listener,
boolean restrictBackground) {
if (listener != null) {
try {
listener.onRestrictBackgroundChanged(restrictBackground);
} catch (RemoteException ignored) {
}
}
}
private void dispatchUidPoliciesChanged(INetworkPolicyListener listener, int uid,
int uidPolicies) {
if (listener != null) {
try {
listener.onUidPoliciesChanged(uid, uidPolicies);
} catch (RemoteException ignored) {
}
}
}
private void dispatchSubscriptionOverride(INetworkPolicyListener listener, int subId,
int overrideMask, int overrideValue) {
if (listener != null) {
try {
listener.onSubscriptionOverride(subId, overrideMask, overrideValue);
} catch (RemoteException ignored) {
}
}
}
private final Handler.Callback mHandlerCallback = new Handler.Callback() {
@Override
public boolean handleMessage(Message msg) {
switch (msg.what) {
case MSG_RULES_CHANGED: {
final int uid = msg.arg1;
final int uidRules = msg.arg2;
final int length = mListeners.beginBroadcast();
for (int i = 0; i < length; i++) {
final INetworkPolicyListener listener = mListeners.getBroadcastItem(i);
dispatchUidRulesChanged(listener, uid, uidRules);
}
mListeners.finishBroadcast();
return true;
}
case MSG_METERED_IFACES_CHANGED: {
final String[] meteredIfaces = (String[]) msg.obj;
final int length = mListeners.beginBroadcast();
for (int i = 0; i < length; i++) {
final INetworkPolicyListener listener = mListeners.getBroadcastItem(i);
dispatchMeteredIfacesChanged(listener, meteredIfaces);
}
mListeners.finishBroadcast();
return true;
}
case MSG_LIMIT_REACHED: {
final String iface = (String) msg.obj;
synchronized (mNetworkPoliciesSecondLock) {
if (mMeteredIfaces.contains(iface)) {
// force stats update to make sure we have
// numbers that caused alert to trigger.
mNetworkStats.forceUpdate();
updateNetworkEnabledNL();
updateNotificationsNL();
}
}
return true;
}
case MSG_RESTRICT_BACKGROUND_CHANGED: {
final boolean restrictBackground = msg.arg1 != 0;
final int length = mListeners.beginBroadcast();
for (int i = 0; i < length; i++) {
final INetworkPolicyListener listener = mListeners.getBroadcastItem(i);
dispatchRestrictBackgroundChanged(listener, restrictBackground);
}
mListeners.finishBroadcast();
final Intent intent =
new Intent(ConnectivityManager.ACTION_RESTRICT_BACKGROUND_CHANGED);
intent.setFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY);
mContext.sendBroadcastAsUser(intent, UserHandle.ALL);
return true;
}
case MSG_POLICIES_CHANGED: {
final int uid = msg.arg1;
final int policy = msg.arg2;
final Boolean notifyApp = (Boolean) msg.obj;
// First notify internal listeners...
final int length = mListeners.beginBroadcast();
for (int i = 0; i < length; i++) {
final INetworkPolicyListener listener = mListeners.getBroadcastItem(i);
dispatchUidPoliciesChanged(listener, uid, policy);
}
mListeners.finishBroadcast();
// ...then apps listening to ACTION_RESTRICT_BACKGROUND_CHANGED
if (notifyApp.booleanValue()) {
broadcastRestrictBackgroundChanged(uid, notifyApp);
}
return true;
}
case MSG_ADVISE_PERSIST_THRESHOLD: {
final long lowestRule = (Long) msg.obj;
// make sure stats are recorded frequently enough; we aim
// for 2MB threshold for 2GB/month rules.
final long persistThreshold = lowestRule / 1000;
mNetworkStats.advisePersistThreshold(persistThreshold);
return true;
}
case MSG_UPDATE_INTERFACE_QUOTA: {
removeInterfaceQuota((String) msg.obj);
// int params need to be stitched back into a long
setInterfaceQuota((String) msg.obj,
((long) msg.arg1 << 32) | (msg.arg2 & 0xFFFFFFFFL));
return true;
}
case MSG_REMOVE_INTERFACE_QUOTA: {
removeInterfaceQuota((String) msg.obj);
return true;
}
case MSG_RESET_FIREWALL_RULES_BY_UID: {
resetUidFirewallRules(msg.arg1);
return true;
}
case MSG_SUBSCRIPTION_OVERRIDE: {
final int overrideMask = msg.arg1;
final int overrideValue = msg.arg2;
final int subId = (int) msg.obj;
final int length = mListeners.beginBroadcast();
for (int i = 0; i < length; i++) {
final INetworkPolicyListener listener = mListeners.getBroadcastItem(i);
dispatchSubscriptionOverride(listener, subId, overrideMask, overrideValue);
}
mListeners.finishBroadcast();
return true;
}
case MSG_METERED_RESTRICTED_PACKAGES_CHANGED: {
final int userId = msg.arg1;
final Set packageNames = (Set) msg.obj;
setMeteredRestrictedPackagesInternal(packageNames, userId);
return true;
}
case MSG_SET_NETWORK_TEMPLATE_ENABLED: {
final NetworkTemplate template = (NetworkTemplate) msg.obj;
final boolean enabled = msg.arg1 != 0;
setNetworkTemplateEnabledInner(template, enabled);
return true;
}
default: {
return false;
}
}
}
};
private final Handler.Callback mUidEventHandlerCallback = new Handler.Callback() {
@Override
public boolean handleMessage(Message msg) {
switch (msg.what) {
case UID_MSG_STATE_CHANGED: {
final int uid = msg.arg1;
final int procState = msg.arg2;
final long procStateSeq = (Long) msg.obj;
handleUidChanged(uid, procState, procStateSeq);
return true;
}
case UID_MSG_GONE: {
final int uid = msg.arg1;
handleUidGone(uid);
return true;
}
default: {
return false;
}
}
}
};
void handleUidChanged(int uid, int procState, long procStateSeq) {
Trace.traceBegin(Trace.TRACE_TAG_NETWORK, "onUidStateChanged");
try {
synchronized (mUidRulesFirstLock) {
// We received a uid state change callback, add it to the history so that it
// will be useful for debugging.
mLogger.uidStateChanged(uid, procState, procStateSeq);
// Now update the network policy rules as per the updated uid state.
updateUidStateUL(uid, procState);
// Updating the network rules is done, so notify AMS about this.
mActivityManagerInternal.notifyNetworkPolicyRulesUpdated(uid, procStateSeq);
}
} finally {
Trace.traceEnd(Trace.TRACE_TAG_NETWORK);
}
}
void handleUidGone(int uid) {
Trace.traceBegin(Trace.TRACE_TAG_NETWORK, "onUidGone");
try {
synchronized (mUidRulesFirstLock) {
removeUidStateUL(uid);
}
} finally {
Trace.traceEnd(Trace.TRACE_TAG_NETWORK);
}
}
private void broadcastRestrictBackgroundChanged(int uid, Boolean changed) {
final PackageManager pm = mContext.getPackageManager();
final String[] packages = pm.getPackagesForUid(uid);
if (packages != null) {
final int userId = UserHandle.getUserId(uid);
for (String packageName : packages) {
final Intent intent =
new Intent(ConnectivityManager.ACTION_RESTRICT_BACKGROUND_CHANGED);
intent.setPackage(packageName);
intent.setFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY);
mContext.sendBroadcastAsUser(intent, UserHandle.of(userId));
}
}
}
private void setInterfaceQuotaAsync(String iface, long quotaBytes) {
// long quotaBytes split up into two ints to fit in message
mHandler.obtainMessage(MSG_UPDATE_INTERFACE_QUOTA, (int) (quotaBytes >> 32),
(int) (quotaBytes & 0xFFFFFFFF), iface).sendToTarget();
}
private void setInterfaceQuota(String iface, long quotaBytes) {
try {
mNetworkManager.setInterfaceQuota(iface, quotaBytes);
} catch (IllegalStateException e) {
Log.wtf(TAG, "problem setting interface quota", e);
} catch (RemoteException e) {
// ignored; service lives in system_server
}
}
private void removeInterfaceQuotaAsync(String iface) {
mHandler.obtainMessage(MSG_REMOVE_INTERFACE_QUOTA, iface).sendToTarget();
}
private void removeInterfaceQuota(String iface) {
try {
mNetworkManager.removeInterfaceQuota(iface);
} catch (IllegalStateException e) {
Log.wtf(TAG, "problem removing interface quota", e);
} catch (RemoteException e) {
// ignored; service lives in system_server
}
}
private void setMeteredNetworkBlacklist(int uid, boolean enable) {
if (LOGV) Slog.v(TAG, "setMeteredNetworkBlacklist " + uid + ": " + enable);
try {
mNetworkManager.setUidMeteredNetworkBlacklist(uid, enable);
} catch (IllegalStateException e) {
Log.wtf(TAG, "problem setting blacklist (" + enable + ") rules for " + uid, e);
} catch (RemoteException e) {
// ignored; service lives in system_server
}
}
private void setMeteredNetworkWhitelist(int uid, boolean enable) {
if (LOGV) Slog.v(TAG, "setMeteredNetworkWhitelist " + uid + ": " + enable);
try {
mNetworkManager.setUidMeteredNetworkWhitelist(uid, enable);
} catch (IllegalStateException e) {
Log.wtf(TAG, "problem setting whitelist (" + enable + ") rules for " + uid, e);
} catch (RemoteException e) {
// ignored; service lives in system_server
}
}
private static final int CHAIN_TOGGLE_NONE = 0;
private static final int CHAIN_TOGGLE_ENABLE = 1;
private static final int CHAIN_TOGGLE_DISABLE = 2;
@Retention(RetentionPolicy.SOURCE)
@IntDef(flag = false, value = {
CHAIN_TOGGLE_NONE,
CHAIN_TOGGLE_ENABLE,
CHAIN_TOGGLE_DISABLE
})
public @interface ChainToggleType {
}
/**
* Calls {@link #setUidFirewallRules(int, SparseIntArray)} and
* {@link #enableFirewallChainUL(int, boolean)} synchronously.
*
* @param chain firewall chain.
* @param uidRules new UID rules; if {@code null}, only toggles chain state.
* @param toggle whether the chain should be enabled, disabled, or not changed.
*/
private void setUidFirewallRulesUL(int chain, @Nullable SparseIntArray uidRules,
@ChainToggleType int toggle) {
if (uidRules != null) {
setUidFirewallRulesUL(chain, uidRules);
}
if (toggle != CHAIN_TOGGLE_NONE) {
enableFirewallChainUL(chain, toggle == CHAIN_TOGGLE_ENABLE);
}
}
/**
* Set uid rules on a particular firewall chain. This is going to synchronize the rules given
* here to netd. It will clean up dead rules and make sure the target chain only contains rules
* specified here.
*/
private void setUidFirewallRulesUL(int chain, SparseIntArray uidRules) {
try {
int size = uidRules.size();
int[] uids = new int[size];
int[] rules = new int[size];
for(int index = size - 1; index >= 0; --index) {
uids[index] = uidRules.keyAt(index);
rules[index] = uidRules.valueAt(index);
}
mNetworkManager.setFirewallUidRules(chain, uids, rules);
mLogger.firewallRulesChanged(chain, uids, rules);
} catch (IllegalStateException e) {
Log.wtf(TAG, "problem setting firewall uid rules", e);
} catch (RemoteException e) {
// ignored; service lives in system_server
}
}
/**
* Add or remove a uid to the firewall blacklist for all network ifaces.
*/
private void setUidFirewallRule(int chain, int uid, int rule) {
if (Trace.isTagEnabled(Trace.TRACE_TAG_NETWORK)) {
Trace.traceBegin(Trace.TRACE_TAG_NETWORK,
"setUidFirewallRule: " + chain + "/" + uid + "/" + rule);
}
try {
if (chain == FIREWALL_CHAIN_DOZABLE) {
mUidFirewallDozableRules.put(uid, rule);
} else if (chain == FIREWALL_CHAIN_STANDBY) {
mUidFirewallStandbyRules.put(uid, rule);
} else if (chain == FIREWALL_CHAIN_POWERSAVE) {
mUidFirewallPowerSaveRules.put(uid, rule);
}
try {
mNetworkManager.setFirewallUidRule(chain, uid, rule);
mLogger.uidFirewallRuleChanged(chain, uid, rule);
} catch (IllegalStateException e) {
Log.wtf(TAG, "problem setting firewall uid rules", e);
} catch (RemoteException e) {
// ignored; service lives in system_server
}
} finally {
Trace.traceEnd(Trace.TRACE_TAG_NETWORK);
}
}
/**
* Add or remove a uid to the firewall blacklist for all network ifaces.
*/
private void enableFirewallChainUL(int chain, boolean enable) {
if (mFirewallChainStates.indexOfKey(chain) >= 0 &&
mFirewallChainStates.get(chain) == enable) {
// All is the same, nothing to do.
return;
}
mFirewallChainStates.put(chain, enable);
try {
mNetworkManager.setFirewallChainEnabled(chain, enable);
mLogger.firewallChainEnabled(chain, enable);
} catch (IllegalStateException e) {
Log.wtf(TAG, "problem enable firewall chain", e);
} catch (RemoteException e) {
// ignored; service lives in system_server
}
}
/**
* Resets all firewall rules associated with an UID.
*/
private void resetUidFirewallRules(int uid) {
try {
mNetworkManager.setFirewallUidRule(FIREWALL_CHAIN_DOZABLE, uid, FIREWALL_RULE_DEFAULT);
mNetworkManager.setFirewallUidRule(FIREWALL_CHAIN_STANDBY, uid, FIREWALL_RULE_DEFAULT);
mNetworkManager
.setFirewallUidRule(FIREWALL_CHAIN_POWERSAVE, uid, FIREWALL_RULE_DEFAULT);
mNetworkManager.setUidMeteredNetworkWhitelist(uid, false);
mNetworkManager.setUidMeteredNetworkBlacklist(uid, false);
} catch (IllegalStateException e) {
Log.wtf(TAG, "problem resetting firewall uid rules for " + uid, e);
} catch (RemoteException e) {
// ignored; service lives in system_server
}
}
@Deprecated
private long getTotalBytes(NetworkTemplate template, long start, long end) {
return getNetworkTotalBytes(template, start, end);
}
private long getNetworkTotalBytes(NetworkTemplate template, long start, long end) {
try {
return mNetworkStats.getNetworkTotalBytes(template, start, end);
} catch (RuntimeException e) {
Slog.w(TAG, "Failed to read network stats: " + e);
return 0;
}
}
private NetworkStats getNetworkUidBytes(NetworkTemplate template, long start, long end) {
try {
return mNetworkStats.getNetworkUidBytes(template, start, end);
} catch (RuntimeException e) {
Slog.w(TAG, "Failed to read network stats: " + e);
return new NetworkStats(SystemClock.elapsedRealtime(), 0);
}
}
private boolean isBandwidthControlEnabled() {
final long token = Binder.clearCallingIdentity();
try {
return mNetworkManager.isBandwidthControlEnabled();
} catch (RemoteException e) {
// ignored; service lives in system_server
return false;
} finally {
Binder.restoreCallingIdentity(token);
}
}
private static Intent buildAllowBackgroundDataIntent() {
return new Intent(ACTION_ALLOW_BACKGROUND);
}
private static Intent buildSnoozeWarningIntent(NetworkTemplate template) {
final Intent intent = new Intent(ACTION_SNOOZE_WARNING);
intent.addFlags(Intent.FLAG_RECEIVER_FOREGROUND);
intent.putExtra(EXTRA_NETWORK_TEMPLATE, template);
return intent;
}
private static Intent buildSnoozeRapidIntent(NetworkTemplate template) {
final Intent intent = new Intent(ACTION_SNOOZE_RAPID);
intent.addFlags(Intent.FLAG_RECEIVER_FOREGROUND);
intent.putExtra(EXTRA_NETWORK_TEMPLATE, template);
return intent;
}
private static Intent buildNetworkOverLimitIntent(Resources res, NetworkTemplate template) {
final Intent intent = new Intent();
intent.setComponent(ComponentName.unflattenFromString(
res.getString(R.string.config_networkOverLimitComponent)));
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.putExtra(EXTRA_NETWORK_TEMPLATE, template);
return intent;
}
private static Intent buildViewDataUsageIntent(Resources res, NetworkTemplate template) {
final Intent intent = new Intent();
intent.setComponent(ComponentName.unflattenFromString(
res.getString(R.string.config_dataUsageSummaryComponent)));
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.putExtra(EXTRA_NETWORK_TEMPLATE, template);
return intent;
}
@VisibleForTesting
public void addIdleHandler(IdleHandler handler) {
mHandler.getLooper().getQueue().addIdleHandler(handler);
}
@VisibleForTesting
public void updateRestrictBackgroundByLowPowerModeUL(final PowerSaveState result) {
mRestrictBackgroundPowerState = result;
boolean restrictBackground = result.batterySaverEnabled;
boolean shouldInvokeRestrictBackground;
// store the temporary mRestrictBackgroundChangedInBsm and update it at last
boolean localRestrictBgChangedInBsm = mRestrictBackgroundChangedInBsm;
if (result.globalBatterySaverEnabled) {
// Try to turn on restrictBackground if (1) it is off and (2) batter saver need to
// turn it on.
shouldInvokeRestrictBackground = !mRestrictBackground && result.batterySaverEnabled;
mRestrictBackgroundBeforeBsm = mRestrictBackground;
localRestrictBgChangedInBsm = false;
} else {
// Try to restore the restrictBackground if it doesn't change in bsm
shouldInvokeRestrictBackground = !mRestrictBackgroundChangedInBsm;
restrictBackground = mRestrictBackgroundBeforeBsm;
}
if (shouldInvokeRestrictBackground) {
setRestrictBackgroundUL(restrictBackground);
}
// Change it at last so setRestrictBackground() won't affect this variable
mRestrictBackgroundChangedInBsm = localRestrictBgChangedInBsm;
}
private static void collectKeys(SparseIntArray source, SparseBooleanArray target) {
final int size = source.size();
for (int i = 0; i < size; i++) {
target.put(source.keyAt(i), true);
}
}
@Override
public void factoryReset(String subscriber) {
mContext.enforceCallingOrSelfPermission(CONNECTIVITY_INTERNAL, TAG);
if (mUserManager.hasUserRestriction(UserManager.DISALLOW_NETWORK_RESET)) {
return;
}
// Turn mobile data limit off
NetworkPolicy[] policies = getNetworkPolicies(mContext.getOpPackageName());
NetworkTemplate template = NetworkTemplate.buildTemplateMobileAll(subscriber);
for (NetworkPolicy policy : policies) {
if (policy.template.equals(template)) {
policy.limitBytes = NetworkPolicy.LIMIT_DISABLED;
policy.inferred = false;
policy.clearSnooze();
}
}
setNetworkPolicies(policies);
// Turn restrict background data off
setRestrictBackground(false);
if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_APPS_CONTROL)) {
// Remove app's "restrict background data" flag
for (int uid : getUidsWithPolicy(POLICY_REJECT_METERED_BACKGROUND)) {
setUidPolicy(uid, POLICY_NONE);
}
}
}
@Override
public boolean isUidNetworkingBlocked(int uid, boolean isNetworkMetered) {
final long startTime = mStatLogger.getTime();
mContext.enforceCallingOrSelfPermission(MANAGE_NETWORK_POLICY, TAG);
final boolean ret = isUidNetworkingBlockedInternal(uid, isNetworkMetered);
mStatLogger.logDurationStat(Stats.IS_UID_NETWORKING_BLOCKED, startTime);
return ret;
}
private boolean isUidNetworkingBlockedInternal(int uid, boolean isNetworkMetered) {
final int uidRules;
final boolean isBackgroundRestricted;
synchronized (mUidRulesFirstLock) {
uidRules = mUidRules.get(uid, RULE_NONE);
isBackgroundRestricted = mRestrictBackground;
}
if (hasRule(uidRules, RULE_REJECT_ALL)) {
mLogger.networkBlocked(uid, NTWK_BLOCKED_POWER);
return true;
}
if (!isNetworkMetered) {
mLogger.networkBlocked(uid, NTWK_ALLOWED_NON_METERED);
return false;
}
if (hasRule(uidRules, RULE_REJECT_METERED)) {
mLogger.networkBlocked(uid, NTWK_BLOCKED_BLACKLIST);
return true;
}
if (hasRule(uidRules, RULE_ALLOW_METERED)) {
mLogger.networkBlocked(uid, NTWK_ALLOWED_WHITELIST);
return false;
}
if (hasRule(uidRules, RULE_TEMPORARY_ALLOW_METERED)) {
mLogger.networkBlocked(uid, NTWK_ALLOWED_TMP_WHITELIST);
return false;
}
if (isBackgroundRestricted) {
mLogger.networkBlocked(uid, NTWK_BLOCKED_BG_RESTRICT);
return true;
}
mLogger.networkBlocked(uid, NTWK_ALLOWED_DEFAULT);
return false;
}
private class NetworkPolicyManagerInternalImpl extends NetworkPolicyManagerInternal {
@Override
public void resetUserState(int userId) {
synchronized (mUidRulesFirstLock) {
boolean changed = removeUserStateUL(userId, false);
changed = addDefaultRestrictBackgroundWhitelistUidsUL(userId) || changed;
if (changed) {
synchronized (mNetworkPoliciesSecondLock) {
writePolicyAL();
}
}
}
}
/**
* @return true if the given uid is restricted from doing networking on metered networks.
*/
@Override
public boolean isUidRestrictedOnMeteredNetworks(int uid) {
final int uidRules;
final boolean isBackgroundRestricted;
synchronized (mUidRulesFirstLock) {
uidRules = mUidRules.get(uid, RULE_ALLOW_ALL);
isBackgroundRestricted = mRestrictBackground;
}
return isBackgroundRestricted
&& !hasRule(uidRules, RULE_ALLOW_METERED)
&& !hasRule(uidRules, RULE_TEMPORARY_ALLOW_METERED);
}
/**
* @return true if networking is blocked on the given interface for the given uid according
* to current networking policies.
*/
@Override
public boolean isUidNetworkingBlocked(int uid, String ifname) {
final long startTime = mStatLogger.getTime();
final boolean isNetworkMetered;
synchronized (mNetworkPoliciesSecondLock) {
isNetworkMetered = mMeteredIfaces.contains(ifname);
}
final boolean ret = isUidNetworkingBlockedInternal(uid, isNetworkMetered);
mStatLogger.logDurationStat(Stats.IS_UID_NETWORKING_BLOCKED, startTime);
return ret;
}
@Override
public void onTempPowerSaveWhitelistChange(int appId, boolean added) {
synchronized (mUidRulesFirstLock) {
mLogger.tempPowerSaveWlChanged(appId, added);
if (added) {
mPowerSaveTempWhitelistAppIds.put(appId, true);
} else {
mPowerSaveTempWhitelistAppIds.delete(appId);
}
updateRulesForTempWhitelistChangeUL(appId);
}
}
@Override
public SubscriptionPlan getSubscriptionPlan(Network network) {
synchronized (mNetworkPoliciesSecondLock) {
final int subId = getSubIdLocked(network);
return getPrimarySubscriptionPlanLocked(subId);
}
}
@Override
public SubscriptionPlan getSubscriptionPlan(NetworkTemplate template) {
synchronized (mNetworkPoliciesSecondLock) {
final int subId = findRelevantSubIdNL(template);
return getPrimarySubscriptionPlanLocked(subId);
}
}
@Override
public long getSubscriptionOpportunisticQuota(Network network, int quotaType) {
final long quotaBytes;
synchronized (mNetworkPoliciesSecondLock) {
quotaBytes = mSubscriptionOpportunisticQuota.get(getSubIdLocked(network),
OPPORTUNISTIC_QUOTA_UNKNOWN);
}
if (quotaBytes == OPPORTUNISTIC_QUOTA_UNKNOWN) {
return OPPORTUNISTIC_QUOTA_UNKNOWN;
}
if (quotaType == QUOTA_TYPE_JOBS) {
return (long) (quotaBytes * Settings.Global.getFloat(mContext.getContentResolver(),
NETPOLICY_QUOTA_FRAC_JOBS, QUOTA_FRAC_JOBS_DEFAULT));
} else if (quotaType == QUOTA_TYPE_MULTIPATH) {
return (long) (quotaBytes * Settings.Global.getFloat(mContext.getContentResolver(),
NETPOLICY_QUOTA_FRAC_MULTIPATH, QUOTA_FRAC_MULTIPATH_DEFAULT));
} else {
return OPPORTUNISTIC_QUOTA_UNKNOWN;
}
}
@Override
public void onAdminDataAvailable() {
mAdminDataAvailableLatch.countDown();
}
@Override
public void setMeteredRestrictedPackages(Set packageNames, int userId) {
setMeteredRestrictedPackagesInternal(packageNames, userId);
}
@Override
public void setMeteredRestrictedPackagesAsync(Set packageNames, int userId) {
mHandler.obtainMessage(MSG_METERED_RESTRICTED_PACKAGES_CHANGED,
userId, 0, packageNames).sendToTarget();
}
}
private void setMeteredRestrictedPackagesInternal(Set packageNames, int userId) {
synchronized (mUidRulesFirstLock) {
final Set newRestrictedUids = new ArraySet<>();
for (String packageName : packageNames) {
final int uid = getUidForPackage(packageName, userId);
if (uid >= 0) {
newRestrictedUids.add(uid);
}
}
final Set oldRestrictedUids = mMeteredRestrictedUids.get(userId);
mMeteredRestrictedUids.put(userId, newRestrictedUids);
handleRestrictedPackagesChangeUL(oldRestrictedUids, newRestrictedUids);
mLogger.meteredRestrictedPkgsChanged(newRestrictedUids);
}
}
private int getUidForPackage(String packageName, int userId) {
try {
return mContext.getPackageManager().getPackageUidAsUser(packageName,
PackageManager.MATCH_KNOWN_PACKAGES, userId);
} catch (NameNotFoundException e) {
return -1;
}
}
private int parseSubId(NetworkState state) {
// TODO: moved to using a legitimate NetworkSpecifier instead of string parsing
int subId = INVALID_SUBSCRIPTION_ID;
if (state != null && state.networkCapabilities != null
&& state.networkCapabilities.hasTransport(TRANSPORT_CELLULAR)) {
NetworkSpecifier spec = state.networkCapabilities.getNetworkSpecifier();
if (spec instanceof StringNetworkSpecifier) {
try {
subId = Integer.parseInt(((StringNetworkSpecifier) spec).specifier);
} catch (NumberFormatException e) {
}
}
}
return subId;
}
@GuardedBy("mNetworkPoliciesSecondLock")
private int getSubIdLocked(Network network) {
return mNetIdToSubId.get(network.netId, INVALID_SUBSCRIPTION_ID);
}
@GuardedBy("mNetworkPoliciesSecondLock")
private SubscriptionPlan getPrimarySubscriptionPlanLocked(int subId) {
final SubscriptionPlan[] plans = mSubscriptionPlans.get(subId);
if (!ArrayUtils.isEmpty(plans)) {
for (SubscriptionPlan plan : plans) {
if (plan.getCycleRule().isRecurring()) {
// Recurring plans will always have an active cycle
return plan;
} else {
// Non-recurring plans need manual test for active cycle
final Range cycle = plan.cycleIterator().next();
if (cycle.contains(ZonedDateTime.now(mClock))) {
return plan;
}
}
}
}
return null;
}
/**
* This will only ever be called once - during device boot.
*/
private void waitForAdminData() {
if (mContext.getPackageManager().hasSystemFeature(PackageManager.FEATURE_DEVICE_ADMIN)) {
ConcurrentUtils.waitForCountDownNoInterrupt(mAdminDataAvailableLatch,
WAIT_FOR_ADMIN_DATA_TIMEOUT_MS, "Wait for admin data");
}
}
private void handleRestrictedPackagesChangeUL(Set oldRestrictedUids,
Set newRestrictedUids) {
if (oldRestrictedUids == null) {
for (int uid : newRestrictedUids) {
updateRulesForDataUsageRestrictionsUL(uid);
}
return;
}
for (int uid : oldRestrictedUids) {
if (!newRestrictedUids.contains(uid)) {
updateRulesForDataUsageRestrictionsUL(uid);
}
}
for (int uid : newRestrictedUids) {
if (!oldRestrictedUids.contains(uid)) {
updateRulesForDataUsageRestrictionsUL(uid);
}
}
}
private boolean isRestrictedByAdminUL(int uid) {
final Set restrictedUids = mMeteredRestrictedUids.get(
UserHandle.getUserId(uid));
return restrictedUids != null && restrictedUids.contains(uid);
}
private static boolean hasRule(int uidRules, int rule) {
return (uidRules & rule) != 0;
}
private static @NonNull NetworkState[] defeatNullable(@Nullable NetworkState[] val) {
return (val != null) ? val : new NetworkState[0];
}
private static boolean getBooleanDefeatingNullable(@Nullable PersistableBundle bundle,
String key, boolean defaultValue) {
return (bundle != null) ? bundle.getBoolean(key, defaultValue) : defaultValue;
}
private class NotificationId {
private final String mTag;
private final int mId;
NotificationId(NetworkPolicy policy, int type) {
mTag = buildNotificationTag(policy, type);
mId = type;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (!(o instanceof NotificationId)) return false;
NotificationId that = (NotificationId) o;
return Objects.equals(mTag, that.mTag);
}
@Override
public int hashCode() {
return Objects.hash(mTag);
}
/**
* Build unique tag that identifies an active {@link NetworkPolicy}
* notification of a specific type, like {@link #TYPE_LIMIT}.
*/
private String buildNotificationTag(NetworkPolicy policy, int type) {
return TAG + ":" + policy.template.hashCode() + ":" + type;
}
public String getTag() {
return mTag;
}
public int getId() {
return mId;
}
}
}