LineageOS/android_packages_modules_Connectivity
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Fix missing NetworkCallbacks for NET_CAPABILITY_VALIDATED changes

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Without this fix if a listening NetworkRequest with NET_CAPABILITY_VALIDATED
is submitted after a network has been validated but failed the most recent
validation attempt, the NetworkRequest will never receive callbacks.

Bug: 21343774
Change-Id: I6fa6d563c9a6f278b20e645776b707559033b249
This commit is contained in:
Paul Jensen
2015-06-16 14:27:36 -04:00
parent 53f089581a
commit c88b39b1d4
2 changed files with 45 additions and 36 deletions
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80
services/core/java/com/android/server/ConnectivityService.java
View File

@@ -1870,7 +1870,14 @@ public class ConnectivityService extends IConnectivityManager.Stub
if (nai == null) {
loge("EVENT_NETWORK_CAPABILITIES_CHANGED from unknown NetworkAgent");
} else {
updateCapabilities(nai, (NetworkCapabilities)msg.obj);
final NetworkCapabilities networkCapabilities =
(NetworkCapabilities)msg.obj;
if (networkCapabilities.hasCapability(NET_CAPABILITY_CAPTIVE_PORTAL) ||
networkCapabilities.hasCapability(NET_CAPABILITY_VALIDATED)) {
Slog.wtf(TAG, "BUG: " + nai + " has stateful capability.");
}
updateCapabilities(nai, networkCapabilities,
NascentState.NOT_JUST_VALIDATED);
}
break;
}
@@ -1957,20 +1964,16 @@ public class ConnectivityService extends IConnectivityManager.Stub
if (isLiveNetworkAgent(nai, "EVENT_NETWORK_TESTED")) {
final boolean valid =
(msg.arg1 == NetworkMonitor.NETWORK_TEST_RESULT_VALID);
final boolean validationChanged = (valid != nai.lastValidated);
nai.lastValidated = valid;
if (valid) {
if (DBG) log("Validated " + nai.name());
nai.networkCapabilities.addCapability(NET_CAPABILITY_VALIDATED);
if (!nai.everValidated) {
nai.everValidated = true;
rematchNetworkAndRequests(nai, NascentState.JUST_VALIDATED,
ReapUnvalidatedNetworks.REAP);
// If score has changed, rebroadcast to NetworkFactories. b/17726566
sendUpdatedScoreToFactories(nai);
}
} else {
nai.networkCapabilities.removeCapability(NET_CAPABILITY_VALIDATED);
if (DBG) log(nai.name() + " validation " + (valid ? " passed" : "failed"));
if (valid != nai.lastValidated) {
final int oldScore = nai.getCurrentScore();
final NascentState nascent = (valid && !nai.everValidated) ?
NascentState.JUST_VALIDATED : NascentState.NOT_JUST_VALIDATED;
nai.lastValidated = valid;
nai.everValidated |= valid;
updateCapabilities(nai, nai.networkCapabilities, nascent);
// If score has changed, rebroadcast to NetworkFactories. b/17726566
if (oldScore != nai.getCurrentScore()) sendUpdatedScoreToFactories(nai);
}
updateInetCondition(nai);
// Let the NetworkAgent know the state of its network
@@ -1978,10 +1981,6 @@ public class ConnectivityService extends IConnectivityManager.Stub
android.net.NetworkAgent.CMD_REPORT_NETWORK_STATUS,
(valid ? NetworkAgent.VALID_NETWORK : NetworkAgent.INVALID_NETWORK),
0, null);
if (validationChanged) {
notifyNetworkCallbacks(nai, ConnectivityManager.CALLBACK_CAP_CHANGED);
}
}
break;
}
@@ -2003,7 +2002,8 @@ public class ConnectivityService extends IConnectivityManager.Stub
if (nai != null && (visible != nai.lastCaptivePortalDetected)) {
nai.lastCaptivePortalDetected = visible;
nai.everCaptivePortalDetected |= visible;
updateCapabilities(nai, nai.networkCapabilities);
updateCapabilities(nai, nai.networkCapabilities,
NascentState.NOT_JUST_VALIDATED);
}
if (!visible) {
setProvNotificationVisibleIntent(false, netId, null, 0, null, null);
@@ -2397,7 +2397,7 @@ public class ConnectivityService extends IConnectivityManager.Stub
if (accept != nai.networkMisc.acceptUnvalidated) {
int oldScore = nai.getCurrentScore();
nai.networkMisc.acceptUnvalidated = accept;
rematchAllNetworksAndRequests(nai, oldScore);
rematchAllNetworksAndRequests(nai, oldScore, NascentState.NOT_JUST_VALIDATED);
sendUpdatedScoreToFactories(nai);
}
@@ -4060,9 +4060,11 @@ public class ConnectivityService extends IConnectivityManager.Stub
*
* @param networkAgent the network having its capabilities updated.
* @param networkCapabilities the new network capabilities.
* @param nascent indicates whether {@code networkAgent} was validated
* (i.e. had everValidated set for the first time) immediately prior to this call.
*/
private void updateCapabilities(NetworkAgentInfo networkAgent,
NetworkCapabilities networkCapabilities) {
NetworkCapabilities networkCapabilities, NascentState nascent) {
// Don't modify caller's NetworkCapabilities.
networkCapabilities = new NetworkCapabilities(networkCapabilities);
if (networkAgent.lastValidated) {
@@ -4079,7 +4081,7 @@ public class ConnectivityService extends IConnectivityManager.Stub
synchronized (networkAgent) {
networkAgent.networkCapabilities = networkCapabilities;
}
rematchAllNetworksAndRequests(networkAgent, networkAgent.getCurrentScore());
rematchAllNetworksAndRequests(networkAgent, networkAgent.getCurrentScore(), nascent);
notifyNetworkCallbacks(networkAgent, ConnectivityManager.CALLBACK_CAP_CHANGED);
}
}
@@ -4423,15 +4425,21 @@ public class ConnectivityService extends IConnectivityManager.Stub
}
}
// Attempt to rematch all Networks with NetworkRequests. This may result in Networks
// being disconnected.
// If only one Network's score or capabilities have been modified since the last time
// this function was called, pass this Network in via the "changed" arugment, otherwise
// pass null.
// If only one Network has been changed but its NetworkCapabilities have not changed,
// pass in the Network's score (from getCurrentScore()) prior to the change via
// "oldScore", otherwise pass changed.getCurrentScore() or 0 if "changed" is null.
private void rematchAllNetworksAndRequests(NetworkAgentInfo changed, int oldScore) {
/**
* Attempt to rematch all Networks with NetworkRequests. This may result in Networks
* being disconnected.
* @param changed If only one Network's score or capabilities have been modified since the last
* time this function was called, pass this Network in this argument, otherwise pass
* null.
* @param oldScore If only one Network has been changed but its NetworkCapabilities have not
* changed, pass in the Network's score (from getCurrentScore()) prior to the change via
* this argument, otherwise pass {@code changed.getCurrentScore()} or 0 if
* {@code changed} is {@code null}. This is because NetworkCapabilities influence a
* network's score.
* @param nascent indicates if {@code changed} has just been validated.
*/
private void rematchAllNetworksAndRequests(NetworkAgentInfo changed, int oldScore,
NascentState nascent) {
// TODO: This may get slow. The "changed" parameter is provided for future optimization
// to avoid the slowness. It is not simply enough to process just "changed", for
// example in the case where "changed"'s score decreases and another network should begin
@@ -4440,9 +4448,9 @@ public class ConnectivityService extends IConnectivityManager.Stub
// Optimization: Only reprocess "changed" if its score improved. This is safe because it
// can only add more NetworkRequests satisfied by "changed", and this is exactly what
// rematchNetworkAndRequests() handles.
if (changed != null && oldScore < changed.getCurrentScore()) {
rematchNetworkAndRequests(changed, NascentState.NOT_JUST_VALIDATED,
ReapUnvalidatedNetworks.REAP);
if (changed != null &&
(oldScore < changed.getCurrentScore() || nascent == NascentState.JUST_VALIDATED)) {
rematchNetworkAndRequests(changed, nascent, ReapUnvalidatedNetworks.REAP);
} else {
for (Iterator i = mNetworkAgentInfos.values().iterator(); i.hasNext(); ) {
rematchNetworkAndRequests((NetworkAgentInfo)i.next(),
@@ -4569,7 +4577,7 @@ public class ConnectivityService extends IConnectivityManager.Stub
final int oldScore = nai.getCurrentScore();
nai.setCurrentScore(score);
rematchAllNetworksAndRequests(nai, oldScore);
rematchAllNetworksAndRequests(nai, oldScore, NascentState.NOT_JUST_VALIDATED);
sendUpdatedScoreToFactories(nai);
}

1
services/core/java/com/android/server/connectivity/NetworkAgentInfo.java
View File

@@ -45,6 +45,7 @@ public class NetworkAgentInfo {
// This Network object is always valid.
public final Network network;
public LinkProperties linkProperties;
// This should only be modified via ConnectivityService.updateCapabilities().
public NetworkCapabilities networkCapabilities;
public final NetworkMonitor networkMonitor;
public final NetworkMisc networkMisc;