Better notification to user when DNS-over-TLS is broken
Provide a specifc notification to let users know that device
has no internet is because it really doesn't have internet access
or it's caused by private DNS resolution failed.
Bug: 113242081
Test: atest FrameworksNetTests
Change-Id: I710c88a4742f5fd56c39fc797d7fa3ad36dba553
diff --git a/core/java/android/net/NetworkCapabilities.java b/core/java/android/net/NetworkCapabilities.java
index 3e325b7..e3259ff 100644
--- a/core/java/android/net/NetworkCapabilities.java
+++ b/core/java/android/net/NetworkCapabilities.java
@@ -57,6 +57,9 @@
private static final String TAG = "NetworkCapabilities";
private static final int INVALID_UID = -1;
+ // Set to true when private DNS is broken.
+ private boolean mPrivateDnsBroken;
+
/**
* @hide
*/
@@ -86,6 +89,7 @@
mUids = null;
mEstablishingVpnAppUid = INVALID_UID;
mSSID = null;
+ mPrivateDnsBroken = false;
}
/**
@@ -104,6 +108,7 @@
mEstablishingVpnAppUid = nc.mEstablishingVpnAppUid;
mUnwantedNetworkCapabilities = nc.mUnwantedNetworkCapabilities;
mSSID = nc.mSSID;
+ mPrivateDnsBroken = nc.mPrivateDnsBroken;
}
/**
@@ -557,6 +562,9 @@
}
if (mLinkUpBandwidthKbps != 0 || mLinkDownBandwidthKbps != 0) return "link bandwidth";
if (hasSignalStrength()) return "signalStrength";
+ if (isPrivateDnsBroken()) {
+ return "privateDnsBroken";
+ }
return null;
}
@@ -1443,7 +1451,8 @@
&& equalsSpecifier(that)
&& equalsTransportInfo(that)
&& equalsUids(that)
- && equalsSSID(that));
+ && equalsSSID(that)
+ && equalsPrivateDnsBroken(that));
}
@Override
@@ -1460,7 +1469,8 @@
+ (mSignalStrength * 29)
+ Objects.hashCode(mUids) * 31
+ Objects.hashCode(mSSID) * 37
- + Objects.hashCode(mTransportInfo) * 41;
+ + Objects.hashCode(mTransportInfo) * 41
+ + Objects.hashCode(mPrivateDnsBroken) * 43;
}
@Override
@@ -1479,6 +1489,7 @@
dest.writeInt(mSignalStrength);
dest.writeArraySet(mUids);
dest.writeString(mSSID);
+ dest.writeBoolean(mPrivateDnsBroken);
}
public static final @android.annotation.NonNull Creator<NetworkCapabilities> CREATOR =
@@ -1498,6 +1509,7 @@
netCap.mUids = (ArraySet<UidRange>) in.readArraySet(
null /* ClassLoader, null for default */);
netCap.mSSID = in.readString();
+ netCap.mPrivateDnsBroken = in.readBoolean();
return netCap;
}
@Override
@@ -1555,6 +1567,10 @@
sb.append(" SSID: ").append(mSSID);
}
+ if (mPrivateDnsBroken) {
+ sb.append(" Private DNS is broken");
+ }
+
sb.append("]");
return sb.toString();
}
@@ -1706,4 +1722,28 @@
public boolean isMetered() {
return !hasCapability(NET_CAPABILITY_NOT_METERED);
}
+
+ /**
+ * Check if private dns is broken.
+ *
+ * @return {@code true} if {@code mPrivateDnsBroken} is set when private DNS is broken.
+ * @hide
+ */
+ public boolean isPrivateDnsBroken() {
+ return mPrivateDnsBroken;
+ }
+
+ /**
+ * Set mPrivateDnsBroken to true when private dns is broken.
+ *
+ * @param broken the status of private DNS to be set.
+ * @hide
+ */
+ public void setPrivateDnsBroken(boolean broken) {
+ mPrivateDnsBroken = broken;
+ }
+
+ private boolean equalsPrivateDnsBroken(NetworkCapabilities nc) {
+ return mPrivateDnsBroken == nc.mPrivateDnsBroken;
+ }
}
diff --git a/core/java/android/net/NetworkMisc.java b/core/java/android/net/NetworkMisc.java
index 9ba3bd9..4ad52d5 100644
--- a/core/java/android/net/NetworkMisc.java
+++ b/core/java/android/net/NetworkMisc.java
@@ -77,6 +77,12 @@
*/
public boolean skip464xlat;
+ /**
+ * Set to true if the PRIVATE_DNS_BROKEN notification has shown for this network.
+ * Reset this bit when private DNS mode is changed from strict mode to opportunistic/off mode.
+ */
+ public boolean hasShownBroken;
+
public NetworkMisc() {
}
diff --git a/core/res/res/values/strings.xml b/core/res/res/values/strings.xml
index 152b131..f423c5f 100644
--- a/core/res/res/values/strings.xml
+++ b/core/res/res/values/strings.xml
@@ -3421,6 +3421,15 @@
<!-- A notification is shown when the user connects to a Wi-Fi network and the system detects that that network has no Internet access. This is the notification's message. -->
<string name="wifi_no_internet_detailed">Tap for options</string>
+ <!-- A notification is shown when the user connects to a mobile network without internet access. This is the notification's title. -->
+ <string name="mobile_no_internet">Mobile network has no internet access</string>
+
+ <!-- A notification is shown when the user connects to a non-mobile and non-wifi network without internet access. This is the notification's title. -->
+ <string name="other_networks_no_internet">Network has no internet access</string>
+
+ <!-- A notification is shown when connected network without internet due to private dns validation failed. This is the notification's message. [CHAR LIMIT=NONE] -->
+ <string name="private_dns_broken_detailed">Private DNS server cannot be accessed</string>
+
<!-- A notification is shown after the user logs in to a captive portal network, to indicate that the network should now have internet connectivity. This is the message of notification. [CHAR LIMIT=50] -->
<string name="captive_portal_logged_in_detailed">Connected</string>
<!-- A notification is shown when the user connects to a network that doesn't have access to some services (e.g. Push notifications may not work). This is the notification's title. [CHAR LIMIT=50] -->
diff --git a/core/res/res/values/symbols.xml b/core/res/res/values/symbols.xml
index 0bd5e43..0e647fe 100644
--- a/core/res/res/values/symbols.xml
+++ b/core/res/res/values/symbols.xml
@@ -590,9 +590,12 @@
<java-symbol type="string" name="menu_space_shortcut_label" />
<java-symbol type="string" name="menu_shift_shortcut_label" />
<java-symbol type="string" name="menu_sym_shortcut_label" />
+ <java-symbol type="string" name="mobile_no_internet" />
<java-symbol type="string" name="notification_title" />
+ <java-symbol type="string" name="other_networks_no_internet" />
<java-symbol type="string" name="permission_request_notification_with_subtitle" />
<java-symbol type="string" name="prepend_shortcut_label" />
+ <java-symbol type="string" name="private_dns_broken_detailed" />
<java-symbol type="string" name="paste_as_plain_text" />
<java-symbol type="string" name="replace" />
<java-symbol type="string" name="undo" />