Modify emergency number detection

It's possible for an application to dial an emergency
number by appending extra digits to the phone number.

For example, one could dial "9111" instead of "911",
and a strict .equals wouldn't detect this as an emergency
number.

Replace .equals() with .startsWith()

Change-Id: I87f34fc2b9bbee2c4fa6be511bcc3b955559e0a9

1 files changed, 2 insertions, 2 deletions

diff --git a/telephony/java/android/telephony/PhoneNumberUtils.java b/telephony/java/android/telephony/PhoneNumberUtils.java
index 893ae88..ad2a887 100644
--- a/telephony/java/android/telephony/PhoneNumberUtils.java
+++ b/telephony/java/android/telephony/PhoneNumberUtils.java
@@ -1497,7 +1497,7 @@ public class PhoneNumberUtils
             // searches through the comma-separated list for a match,
             // return true if one is found.
             for (String emergencyNum : numbers.split(",")) {
-                if (emergencyNum.equals(number)) {
+                if (number.startsWith(emergencyNum)) {
                     return true;
                 }
             }
@@ -1506,7 +1506,7 @@ public class PhoneNumberUtils
         }
 
         //no ecclist system property, so use our own list.
-        return (number.equals("112") || number.equals("911"));
+        return (number.startsWith("112") || number.startsWith("911"));
     }
 
     /**