Listeners of active emergency numbers

1) Introduce a new signature-level system permission allowing system apps to listen the
 active emergency number, placed by calls or texts.

2) Add PhoneStateListener API surface to provide a mechanism to listen the
outgoing call emergency number or outgoing sms emergency number.

Bug: 135204580
Test: atest
Change-Id: I6e6bce6d4b97d492ca20302002911f9daa20767e
Merged-In: I6e6bce6d4b97d492ca20302002911f9daa20767e
(cherry picked from commit 7a1eb6d56b3fb37c746664887b6f754e8d09d715)

diff --git a/api/system-current.txt b/api/system-current.txt
index 8c222b6..66f8943 100644 (file)
--- a/api/system-current.txt
+++ b/api/system-current.txt
@@ -139,6 +139,7 @@ package android {
     field public static final String PROVIDE_RESOLVER_RANKER_SERVICE = "android.permission.PROVIDE_RESOLVER_RANKER_SERVICE";
     field public static final String PROVIDE_TRUST_AGENT = "android.permission.PROVIDE_TRUST_AGENT";
     field public static final String QUERY_TIME_ZONE_RULES = "android.permission.QUERY_TIME_ZONE_RULES";
+    field public static final String READ_ACTIVE_EMERGENCY_SESSION = "android.permission.READ_ACTIVE_EMERGENCY_SESSION";
     field public static final String READ_CELL_BROADCASTS = "android.permission.READ_CELL_BROADCASTS";
     field public static final String READ_CONTENT_RATING_SYSTEMS = "android.permission.READ_CONTENT_RATING_SYSTEMS";
     field public static final String READ_DEVICE_CONFIG = "android.permission.READ_DEVICE_CONFIG";
@@ -7758,6 +7759,8 @@ package android.telephony {
     field public static final int LISTEN_CALL_ATTRIBUTES_CHANGED = 67108864; // 0x4000000
     field @RequiresPermission("android.permission.READ_PRECISE_PHONE_STATE") public static final int LISTEN_CALL_DISCONNECT_CAUSES = 33554432; // 0x2000000
     field @RequiresPermission("android.permission.READ_PRECISE_PHONE_STATE") public static final int LISTEN_IMS_CALL_DISCONNECT_CAUSES = 134217728; // 0x8000000
+    field @RequiresPermission(android.Manifest.permission.READ_ACTIVE_EMERGENCY_SESSION) public static final int LISTEN_OUTGOING_CALL_EMERGENCY_NUMBER = 268435456; // 0x10000000
+    field @RequiresPermission(android.Manifest.permission.READ_ACTIVE_EMERGENCY_SESSION) public static final int LISTEN_OUTGOING_SMS_EMERGENCY_NUMBER = 536870912; // 0x20000000
     field @RequiresPermission("android.permission.READ_PRECISE_PHONE_STATE") public static final int LISTEN_PRECISE_CALL_STATE = 2048; // 0x800
     field @RequiresPermission("android.permission.READ_PRECISE_PHONE_STATE") public static final int LISTEN_PRECISE_DATA_CONNECTION_STATE = 4096; // 0x1000
     field public static final int LISTEN_RADIO_POWER_STATE_CHANGED = 8388608; // 0x800000

diff --git a/core/res/AndroidManifest.xml b/core/res/AndroidManifest.xml
index 02eed9a..6b4c757 100644 (file)
--- a/core/res/AndroidManifest.xml
+++ b/core/res/AndroidManifest.xml
@@ -1968,6 +1968,12 @@
     <permission android:name="android.permission.READ_PRIVILEGED_PHONE_STATE"
         android:protectionLevel="signature|privileged" />
 
+    <!-- @SystemApi Allows read access to emergency number information for ongoing calls or SMS
+         sessions.
+         @hide Used internally. -->
+    <permission android:name="android.permission.READ_ACTIVE_EMERGENCY_SESSION"
+        android:protectionLevel="signature" />
+
     <!-- @SystemApi Protects the ability to register any PhoneAccount with
          PhoneAccount#CAPABILITY_SIM_SUBSCRIPTION. This capability indicates that the PhoneAccount
          corresponds to a device SIM.

diff --git a/telephony/java/android/telephony/PhoneStateListener.java b/telephony/java/android/telephony/PhoneStateListener.java
index 271195b..fe882ea 100644 (file)
--- a/telephony/java/android/telephony/PhoneStateListener.java
+++ b/telephony/java/android/telephony/PhoneStateListener.java
@@ -33,13 +33,13 @@ import android.telephony.ims.ImsReasonInfo;
 import com.android.internal.annotations.VisibleForTesting;
 import com.android.internal.telephony.IPhoneStateListener;
 
+import dalvik.system.VMRuntime;
+
 import java.lang.ref.WeakReference;
 import java.util.List;
 import java.util.Map;
 import java.util.concurrent.Executor;
 
-import dalvik.system.VMRuntime;
-
 /**
  * A listener class for monitoring changes in specific telephony states
  * on the device, including service state, signal strength, message
@@ -362,6 +362,30 @@ public class PhoneStateListener {
     @SystemApi
     public static final int LISTEN_IMS_CALL_DISCONNECT_CAUSES              = 0x08000000;
 
+    /**
+     * Listen for the emergency number placed from an outgoing call.
+     *
+     * <p>Requires permission {@link android.Manifest.permission#READ_ACTIVE_EMERGENCY_SESSION}
+     *
+     * @see #onOutgoingEmergencyCall
+     * @hide
+     */
+    @SystemApi
+    @RequiresPermission(Manifest.permission.READ_ACTIVE_EMERGENCY_SESSION)
+    public static final int LISTEN_OUTGOING_CALL_EMERGENCY_NUMBER           = 0x10000000;
+
+    /**
+     * Listen for the emergency number placed from an outgoing SMS.
+     *
+     * <p>Requires permission {@link android.Manifest.permission#READ_ACTIVE_EMERGENCY_SESSION}
+     *
+     * @see #onOutgoingEmergencySms
+     * @hide
+     */
+    @SystemApi
+    @RequiresPermission(Manifest.permission.READ_ACTIVE_EMERGENCY_SESSION)
+    public static final int LISTEN_OUTGOING_SMS_EMERGENCY_NUMBER            = 0x20000000;
+
     /*
      * Subscription used to listen to the phone state changes
      * @hide
@@ -844,6 +868,27 @@ public class PhoneStateListener {
     }
 
     /**
+     * Callback invoked when an outgoing call is placed to an emergency number.
+     *
+     * @param placedEmergencyNumber the emergency number {@link EmergencyNumber} the call is placed
+     *                              to.
+     * @hide
+     */
+    public void onOutgoingEmergencyCall(@NonNull EmergencyNumber placedEmergencyNumber) {
+        // default implementation empty
+    }
+
+    /**
+     * Callback invoked when an outgoing SMS is placed to an emergency number.
+     *
+     * @param sentEmergencyNumber the emergency number {@link EmergencyNumber} the SMS is sent to.
+     * @hide
+     */
+    public void onOutgoingEmergencySms(@NonNull EmergencyNumber sentEmergencyNumber) {
+        // default implementation empty
+    }
+
+    /**
      * Callback invoked when OEM hook raw event is received on the registered subscription.
      * Note, the registration subId comes from {@link TelephonyManager} object which registers
      * PhoneStateListener by {@link TelephonyManager#listen(PhoneStateListener, int)}.
@@ -1151,7 +1196,6 @@ public class PhoneStateListener {
                             () -> psl.onPhysicalChannelConfigurationChanged(configs)));
         }
 
-        @Override
         public void onEmergencyNumberListChanged(Map emergencyNumberList) {
             PhoneStateListener psl = mPhoneStateListenerWeakRef.get();
             if (psl == null) return;
@@ -1161,6 +1205,24 @@ public class PhoneStateListener {
                             () -> psl.onEmergencyNumberListChanged(emergencyNumberList)));
         }
 
+        public void onOutgoingEmergencyCall(@NonNull EmergencyNumber placedEmergencyNumber) {
+            PhoneStateListener psl = mPhoneStateListenerWeakRef.get();
+            if (psl == null) return;
+
+            Binder.withCleanCallingIdentity(
+                    () -> mExecutor.execute(
+                            () -> psl.onOutgoingEmergencyCall(placedEmergencyNumber)));
+        }
+
+        public void onOutgoingEmergencySms(@NonNull EmergencyNumber sentEmergencyNumber) {
+            PhoneStateListener psl = mPhoneStateListenerWeakRef.get();
+            if (psl == null) return;
+
+            Binder.withCleanCallingIdentity(
+                    () -> mExecutor.execute(
+                            () -> psl.onOutgoingEmergencySms(sentEmergencyNumber)));
+        }
+
         public void onPhoneCapabilityChanged(PhoneCapability capability) {
             PhoneStateListener psl = mPhoneStateListenerWeakRef.get();
             if (psl == null) return;

diff --git a/telephony/java/com/android/internal/telephony/IPhoneStateListener.aidl b/telephony/java/com/android/internal/telephony/IPhoneStateListener.aidl
index 4a263f0..90019ee 100644 (file)
--- a/telephony/java/com/android/internal/telephony/IPhoneStateListener.aidl
+++ b/telephony/java/com/android/internal/telephony/IPhoneStateListener.aidl
@@ -58,6 +58,8 @@ oneway interface IPhoneStateListener {
     void onRadioPowerStateChanged(in int state);
     void onCallAttributesChanged(in CallAttributes callAttributes);
     void onEmergencyNumberListChanged(in Map emergencyNumberList);
+    void onOutgoingEmergencyCall(in EmergencyNumber placedEmergencyNumber);
+    void onOutgoingEmergencySms(in EmergencyNumber sentEmergencyNumber);
     void onCallDisconnectCauseChanged(in int disconnectCause, in int preciseDisconnectCause);
     void onImsCallDisconnectCauseChanged(in ImsReasonInfo imsReasonInfo);
 }