LineageOS/android_packages_modules_Connectivity
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[VCN07] Bypass VCN for non-internet app accessible cellular services

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Deduce the NET_CAPABILITY_NOT_VCN_MANAGED capability from other
capabilities and user intention, which includes:
   1. For the requests that don't have anything besides
      VCN_SUPPORTED_CAPABILITIES, add the NOT_VCN_MANAGED to
      allow the callers automatically utilize VCN networks
      if available.
   2. For the requests that explicitly add or remove
      NOT_VCN_MANAGED,  do not alter them to allow user fire
      request that suits their need.

Test: atest NetworkRequestTest#testBypassingVcnForNonInternetRequest
Bug: 175662146
Change-Id: I2876264cee14b624c89ba3b380027a8b521ad8ea
  (cherry-picked from aosp/1549817)
This commit is contained in:
junyulai
2021-01-13 18:13:11 +08:00
parent b30d38f3ef
commit 719814c97a
4 changed files with 84 additions and 9 deletions
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69
framework/src/android/net/NetworkRequest.java
View File

@@ -16,6 +16,22 @@
package android.net;
import static android.net.NetworkCapabilities.NET_CAPABILITY_CAPTIVE_PORTAL;
import static android.net.NetworkCapabilities.NET_CAPABILITY_DUN;
import static android.net.NetworkCapabilities.NET_CAPABILITY_FOREGROUND;
import static android.net.NetworkCapabilities.NET_CAPABILITY_INTERNET;
import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_CONGESTED;
import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_METERED;
import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED;
import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_ROAMING;
import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_SUSPENDED;
import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_VCN_MANAGED;
import static android.net.NetworkCapabilities.NET_CAPABILITY_NOT_VPN;
import static android.net.NetworkCapabilities.NET_CAPABILITY_PARTIAL_CONNECTIVITY;
import static android.net.NetworkCapabilities.NET_CAPABILITY_TEMPORARILY_NOT_METERED;
import static android.net.NetworkCapabilities.NET_CAPABILITY_TRUSTED;
import static android.net.NetworkCapabilities.NET_CAPABILITY_VALIDATED;
import android.annotation.NonNull;
import android.annotation.Nullable;
import android.annotation.RequiresPermission;
@@ -30,6 +46,8 @@ import android.os.Process;
import android.text.TextUtils;
import android.util.proto.ProtoOutputStream;
import java.util.Arrays;
import java.util.List;
import java.util.Objects;
import java.util.Set;
@@ -154,8 +172,30 @@ public class NetworkRequest implements Parcelable {
* needed in terms of {@link NetworkCapabilities} features
*/
public static class Builder {
/**
* Capabilities that are currently compatible with VCN networks.
*/
private static final List<Integer> VCN_SUPPORTED_CAPABILITIES = Arrays.asList(
NET_CAPABILITY_CAPTIVE_PORTAL,
NET_CAPABILITY_DUN,
NET_CAPABILITY_FOREGROUND,
NET_CAPABILITY_INTERNET,
NET_CAPABILITY_NOT_CONGESTED,
NET_CAPABILITY_NOT_METERED,
NET_CAPABILITY_NOT_RESTRICTED,
NET_CAPABILITY_NOT_ROAMING,
NET_CAPABILITY_NOT_SUSPENDED,
NET_CAPABILITY_NOT_VPN,
NET_CAPABILITY_PARTIAL_CONNECTIVITY,
NET_CAPABILITY_TEMPORARILY_NOT_METERED,
NET_CAPABILITY_TRUSTED,
NET_CAPABILITY_VALIDATED);
private final NetworkCapabilities mNetworkCapabilities;
// A boolean that represents the user modified NOT_VCN_MANAGED capability.
private boolean mModifiedNotVcnManaged = false;
/**
* Default constructor for Builder.
*/
@@ -177,6 +217,7 @@ public class NetworkRequest implements Parcelable {
// maybeMarkCapabilitiesRestricted() doesn't add back.
final NetworkCapabilities nc = new NetworkCapabilities(mNetworkCapabilities);
nc.maybeMarkCapabilitiesRestricted();
deduceNotVcnManagedCapability(nc);
return new NetworkRequest(nc, ConnectivityManager.TYPE_NONE,
ConnectivityManager.REQUEST_ID_UNSET, Type.NONE);
}
@@ -193,6 +234,9 @@ public class NetworkRequest implements Parcelable {
*/
public Builder addCapability(@NetworkCapabilities.NetCapability int capability) {
mNetworkCapabilities.addCapability(capability);
if (capability == NetworkCapabilities.NET_CAPABILITY_NOT_VCN_MANAGED) {
mModifiedNotVcnManaged = true;
}
return this;
}
@@ -204,6 +248,9 @@ public class NetworkRequest implements Parcelable {
*/
public Builder removeCapability(@NetworkCapabilities.NetCapability int capability) {
mNetworkCapabilities.removeCapability(capability);
if (capability == NetworkCapabilities.NET_CAPABILITY_NOT_VCN_MANAGED) {
mModifiedNotVcnManaged = true;
}
return this;
}
@@ -261,6 +308,9 @@ public class NetworkRequest implements Parcelable {
@NonNull
public Builder clearCapabilities() {
mNetworkCapabilities.clearAll();
// If the caller explicitly clear all capabilities, the NOT_VCN_MANAGED capabilities
// should not be add back later.
mModifiedNotVcnManaged = true;
return this;
}
@@ -380,6 +430,25 @@ public class NetworkRequest implements Parcelable {
mNetworkCapabilities.setSignalStrength(signalStrength);
return this;
}
/**
* Deduce the NET_CAPABILITY_NOT_VCN_MANAGED capability from other capabilities
* and user intention, which includes:
* 1. For the requests that don't have anything besides
* {@link #VCN_SUPPORTED_CAPABILITIES}, add the NET_CAPABILITY_NOT_VCN_MANAGED to
* allow the callers automatically utilize VCN networks if available.
* 2. For the requests that explicitly add or remove NET_CAPABILITY_NOT_VCN_MANAGED,
* do not alter them to allow user fire request that suits their need.
*
* @hide
*/
private void deduceNotVcnManagedCapability(final NetworkCapabilities nc) {
if (mModifiedNotVcnManaged) return;
for (final int cap : nc.getCapabilities()) {
if (!VCN_SUPPORTED_CAPABILITIES.contains(cap)) return;
}
nc.addCapability(NET_CAPABILITY_NOT_VCN_MANAGED);
}
}
// implement the Parcelable interface