Accept verification SMSes with missing colons

Apparently some Argentinian mobile providers strip the colons from
Signal's verification SMS messages.

Fixes #5363
Fixes #3490
Closes #5371

// FREEBIE

src/org/thoughtcrime/securesms/service/SmsListener.java

@@ -41,7 +41,7 @@ public class SmsListener extends BroadcastReceiver {
   private static final String SMS_RECEIVED_ACTION  = Telephony.Sms.Intents.SMS_RECEIVED_ACTION;
   private static final String SMS_DELIVERED_ACTION = Telephony.Sms.Intents.SMS_DELIVER_ACTION;
 
-  private static final Pattern CHALLENGE_PATTERN = Pattern.compile(".*Your (Signal|TextSecure) verification code: ([0-9]{3,4})-([0-9]{3,4}).*", Pattern.DOTALL);
+  private static final Pattern CHALLENGE_PATTERN = Pattern.compile(".*Your (Signal|TextSecure) verification code:? ([0-9]{3,4})-([0-9]{3,4}).*", Pattern.DOTALL);
 
   private boolean isExemption(SmsMessage message, String messageBody) {
 

test/unitTest/java/org/thoughtcrime/securesms/service/SmsListenerTest.java

@@ -24,6 +24,7 @@ public class SmsListenerTest extends BaseUnitTest {
       put("Your TextSecure verification code: 1337-1337",      "13371337");
       put("XXXYour TextSecure verification code: 1337-1337",   "13371337");
       put("Your TextSecure verification code: 1337-1337XXX",   "13371337");
+      put("Your TextSecure verification code 1337-1337",       "13371337");
 
       put("Your Signal verification code: 337-337",        "337337");
       put("XXX\nYour Signal verification code: 1337-1337", "13371337");
@@ -32,6 +33,7 @@ public class SmsListenerTest extends BaseUnitTest {
       put("Your Signal verification code: 1337-1337",      "13371337");
       put("XXXYour Signal verification code: 1337-1337",   "13371337");
       put("Your Signal verification code: 1337-1337XXX",   "13371337");
+      put("Your Signal verification code 1337-1337",       "13371337");
   }};
 
   private SmsListener listener;