revert to tracking longform build

We use this to determine which legacy migrations to run.

Also, soften the "your device is too old" behavior to just exit, rather
than blow away the users installation. Ouch!

* bump version

// FREEBIE

Signal/Signal-Info.plist

@@ -38,7 +38,7 @@
 		</dict>
 	</array>
 	<key>CFBundleVersion</key>
-	<string>3</string>
+	<string>2.6.5.4</string>
 	<key>ITSAppUsesNonExemptEncryption</key>
 	<false/>
 	<key>LOGS_EMAIL</key>

Signal/src/environment/VersionMigrations.m

@@ -36,6 +36,12 @@
 + (void)performUpdateCheck
 {
     NSString *previousVersion = Environment.preferences.lastRanVersion;
+    NSString *currentVersion =
+        [NSString stringWithFormat:@"%@", NSBundle.mainBundle.infoDictionary[@"CFBundleVersion"]];
+
+    DDLogInfo(
+        @"%@ Checking migrations. currentVersion: %@, lastRanVersion: %@", self.tag, currentVersion, previousVersion);
+
     if (!previousVersion) {
         DDLogInfo(@"No previous version found. Probably first launch since install - nothing to migrate.");
         OWSDatabaseMigrationRunner *runner =
@@ -45,19 +51,25 @@
         return;
     }
 
-    if (([self isVersion:previousVersion atLeast:@"1.0.2" andLessThan:@"2.0"])) {
-        // We don't migrate from RedPhone anymore, too painful to maintain.
-        DDLogError(@"Migrating from RedPhone no longer supported. Resetting app data and quitting.");
-        [Environment resetAppData];
-        exit(0);
-    }
+    if ([self isVersion:previousVersion atLeast:@"1.0.2" andLessThan:@"2.0"]) {
+        DDLogError(@"Migrating from RedPhone no longer supported. Quitting.");
+        // Not translating these as so few are affected.
+        UIAlertController *alertController = [UIAlertController
+            alertControllerWithTitle:@"You must reinstall Signal"
+                             message:
+                                 @"Sorry, your installation is too old for us to update. You'll have to start fresh."
+                      preferredStyle:UIAlertControllerStyleAlert];
 
-    BOOL VOIPRegistration =
-        [[PushManager sharedManager] supportsVOIPPush] && ![Environment.preferences hasRegisteredVOIPPush];
+        UIAlertAction *quitAction = [UIAlertAction actionWithTitle:@"Quit"
+                                                             style:UIAlertActionStyleDefault
+                                                           handler:^(UIAlertAction *_Nonnull action) {
+                                                               exit(0);
+                                                           }];
+        [alertController addAction:quitAction];
 
-    // VOIP Push might need to be enabled because 1) user ran old version 2) Update to compatible iOS version
-    if (VOIPRegistration && [TSAccountManager isRegistered]) {
-        [self nonBlockingPushRegistration];
+        [[UIApplication sharedApplication].keyWindow.rootViewController presentViewController:alertController
+                                                                                     animated:YES
+                                                                                   completion:nil];
     }
 
     if ([self isVersion:previousVersion atLeast:@"2.0.0" andLessThan:@"2.1.70"] && [TSAccountManager isRegistered]) {
@@ -197,4 +209,16 @@
     }
 }
 
+#pragma mark - Logging
+
++ (NSString *)tag
+{
+    return [NSString stringWithFormat:@"[%@]", self.class];
+}
+
+- (NSString *)tag
+{
+    return self.class.tag;
+}
+
 @end