Add new carrier config option for enabling SIP PUBLISH of RCS caps

Adds a new carrier config option that will bring up/down the service
connection to the vendor IMS stack. When down, we should not
see the vendor IMS stack generate SIP PUBLISH requests to the network.

This is so that we do not generate SIP PUBLISH requests on networks
that do not support this functionality.

Bug: 173115560
Test: atest CarrierConfigTests
Merged-In: If9ab9836261afc2d6cebb959690d8b44b06a3dfe
Change-Id: If9ab9836261afc2d6cebb959690d8b44b06a3dfe
diff --git a/telephony/java/android/telephony/CarrierConfigManager.java b/telephony/java/android/telephony/CarrierConfigManager.java
old mode 100755
new mode 100644
index 93cd991..757939d
--- a/telephony/java/android/telephony/CarrierConfigManager.java
+++ b/telephony/java/android/telephony/CarrierConfigManager.java
@@ -1959,8 +1959,16 @@
             "allow_hold_call_during_emergency_bool";
 
     /**
-     * Flag indicating whether the carrier supports RCS presence indication for
-     * User Capability Exchange (UCE).  When presence is supported, the device should use the
+     * Flag indicating whether or not the carrier supports the periodic exchange of phone numbers
+     * in the user's address book with the carrier's presence server in order to retrieve the RCS
+     * capabilities for each contact used in the RCS User Capability Exchange (UCE) procedure. See
+     * RCC.71, section 3 for more information.
+     * <p>
+     * The flag {@code Ims#KEY_ENABLE_PRESENCE_PUBLISH_BOOL} must also be enabled if this flag is
+     * enabled, as sending a periodic SIP PUBLISH with this device's RCS capabilities is a
+     * requirement for capability exchange to begin.
+     * <p>
+     * When presence is supported, the device should use the
      * {@link android.provider.ContactsContract.Data#CARRIER_PRESENCE} bit mask and set the
      * {@link android.provider.ContactsContract.Data#CARRIER_PRESENCE_VT_CAPABLE} bit to indicate
      * whether each contact supports video calling.  The UI is made aware that presence is enabled
@@ -3767,11 +3775,26 @@
         public static final String KEY_WIFI_OFF_DEFERRING_TIME_MILLIS_INT =
                 KEY_PREFIX + "wifi_off_deferring_time_millis_int";
 
+        /**
+         * A boolean flag specifying whether or not this carrier supports the device notifying the
+         * network of its RCS capabilities using the SIP PUBLISH procedure defined for User
+         * Capability Exchange (UCE). See RCC.71, section 3 for more information.
+         * <p>
+         * If this key's value is set to false, the procedure for RCS contact capability exchange
+         * via SIP SUBSCRIBE/NOTIFY will also be disabled internally, and
+         * {@link #KEY_USE_RCS_PRESENCE_BOOL} must also be set to false to ensure apps do not
+         * improperly think that capability exchange via SIP PUBLISH is enabled.
+         * <p> The default value for this key is {@code false}.
+         * @hide
+         */
+        public static final String KEY_ENABLE_PRESENCE_PUBLISH_BOOL =
+                KEY_PREFIX + "enable_presence_publish_bool";
         private Ims() {}
 
         private static PersistableBundle getDefaults() {
             PersistableBundle defaults = new PersistableBundle();
             defaults.putInt(KEY_WIFI_OFF_DEFERRING_TIME_MILLIS_INT, 4000);
+            defaults.putBoolean(KEY_ENABLE_PRESENCE_PUBLISH_BOOL, false);
             return defaults;
         }
     }