Generate new registrationId on re-register

In order for others to know they should start a new session with us, we
need to change our registration id.

To achieve this, I consolidated all the Account related attributes on
TSAccountManager - luckily they were already in the proper collection, I
just moved the API to hang on the AccountManager instead of a TSStorage
category extension.

Also:

@synchronize access to `registrationId`

// FREEBIE

SignalServiceKit/src/Account/TSAccountManager.h

@@ -42,6 +42,22 @@ extern NSString *const kNSNotificationName_LocalNumberDidChange;
 + (nullable NSString *)localNumber;
 - (nullable NSString *)localNumber;
 
+/**
+ *  Symmetric key that's used to encrypt message payloads from the server,
+ *
+ *  @return signaling key
+ */
++ (nullable NSString *)signalingKey;
+- (nullable NSString *)signalingKey;
+
+/**
+ *  The server auth token allows the Signal client to connect to the Signal server
+ *
+ *  @return server authentication token
+ */
++ (nullable NSString *)serverAuthToken;
+- (nullable NSString *)serverAuthToken;
+
 /**
  *  The registration ID is unique to an installation of TextSecure, it allows to know if the app was reinstalled
  *

SignalServiceKit/src/Account/TSAccountManager.m

@@ -13,7 +13,7 @@
 #import "TSPreKeyManager.h"
 #import "TSSocketManager.h"
 #import "TSStorageManager+SessionStore.h"
-#import "TSStorageManager+keyingMaterial.h"
+#import "YapDatabaseConnection+OWS.h"
 
 NS_ASSUME_NONNULL_BEGIN
 
@@ -25,6 +25,10 @@ NSString *const kNSNotificationName_LocalNumberDidChange = @"kNSNotificationName
 NSString *const TSAccountManager_RegisteredNumberKey = @"TSStorageRegisteredNumberKey";
 NSString *const TSAccountManager_LocalRegistrationIdKey = @"TSStorageLocalRegistrationId";
 
+NSString *const TSAccountManager_UserAccountCollection = @"TSStorageUserAccountCollection";
+NSString *const TSAccountManager_ServerAuthToken = @"TSStorageServerAuthToken";
+NSString *const TSAccountManager_ServerSignalingKey = @"TSStorageServerSignalingKey";
+
 @interface TSAccountManager ()
 
 @property (nonatomic, readonly) BOOL isRegistered;
@@ -84,7 +88,9 @@ NSString *const TSAccountManager_LocalRegistrationIdKey = @"TSStorageLocalRegist
         _isRegistered = NO;
         _cachedLocalNumber = nil;
         _phoneNumberAwaitingVerification = nil;
-        [self removeStoredLocalNumber];
+        [self.dbConnection readWriteWithBlock:^(YapDatabaseReadWriteTransaction *_Nonnull transaction) {
+            [transaction removeAllObjectsInCollection:TSAccountManager_UserAccountCollection];
+        }];
     }
     [[TSStorageManager sharedManager] resetSessionStore];
 }
@@ -150,20 +156,11 @@ NSString *const TSAccountManager_LocalRegistrationIdKey = @"TSStorageLocalRegist
     return self.cachedLocalNumber;
 }
 
-- (void)removeStoredLocalNumber
-{
-    @synchronized(self)
-    {
-        [self.dbConnection removeObjectForKey:TSAccountManager_RegisteredNumberKey
-                                 inCollection:TSStorageUserAccountCollection];
-    }
-}
-
 - (nullable NSString *)storedLocalNumber
 {
     @synchronized (self) {
         return [self.dbConnection stringForKey:TSAccountManager_RegisteredNumberKey
-                                  inCollection:TSStorageUserAccountCollection];
+                                  inCollection:TSAccountManager_UserAccountCollection];
     }
 }
 
@@ -172,7 +169,7 @@ NSString *const TSAccountManager_LocalRegistrationIdKey = @"TSStorageLocalRegist
     @synchronized (self) {
         [self.dbConnection setObject:localNumber
                               forKey:TSAccountManager_RegisteredNumberKey
-                        inCollection:TSStorageUserAccountCollection];
+                        inCollection:TSAccountManager_UserAccountCollection];
     }
 }
 
@@ -183,19 +180,22 @@ NSString *const TSAccountManager_LocalRegistrationIdKey = @"TSStorageLocalRegist
 
 - (uint32_t)getOrGenerateRegistrationId
 {
-    uint32_t registrationID = [[self.dbConnection objectForKey:TSAccountManager_LocalRegistrationIdKey
-                                                  inCollection:TSStorageUserAccountCollection] unsignedIntValue];
+    @synchronized(self)
+    {
+        uint32_t registrationID =
+            [[self.dbConnection objectForKey:TSAccountManager_LocalRegistrationIdKey
+                                inCollection:TSAccountManager_UserAccountCollection] unsignedIntValue];
 
-    if (registrationID == 0) {
-        registrationID = (uint32_t)arc4random_uniform(16380) + 1;
-        DDLogWarn(@"%@ Generated a new registrationID: %u", self.tag, registrationID);
+        if (registrationID == 0) {
+            registrationID = (uint32_t)arc4random_uniform(16380) + 1;
+            DDLogWarn(@"%@ Generated a new registrationID: %u", self.tag, registrationID);
 
-        [self.dbConnection setObject:[NSNumber numberWithUnsignedInteger:registrationID]
-                              forKey:TSAccountManager_LocalRegistrationIdKey
-                        inCollection:TSStorageUserAccountCollection];
+            [self.dbConnection setObject:[NSNumber numberWithUnsignedInteger:registrationID]
+                                  forKey:TSAccountManager_LocalRegistrationIdKey
+                            inCollection:TSAccountManager_UserAccountCollection];
+        }
+        return registrationID;
     }
-
-    return registrationID;
 }
 
 - (void)registerForPushNotificationsWithPushToken:(NSString *)pushToken
@@ -336,7 +336,7 @@ NSString *const TSAccountManager_LocalRegistrationIdKey = @"TSStorageLocalRegist
                 case 200:
                 case 204: {
                     DDLogInfo(@"%@ Verification code accepted.", self.tag);
-                    [TSStorageManager storeServerToken:authToken signalingKey:signalingKey];
+                    [self storeServerToken:authToken signalingKey:signalingKey];
                     [TSPreKeyManager registerPreKeysWithMode:RefreshPreKeysMode_SignedAndOneTime
                                                      success:successBlock
                                                      failure:failureBlock];
@@ -389,6 +389,41 @@ NSString *const TSAccountManager_LocalRegistrationIdKey = @"TSStorageLocalRegist
     return signalingKeyTokenPrint;
 }
 
++ (nullable NSString *)signalingKey
+{
+    return [[self sharedInstance] signalingKey];
+}
+
+- (nullable NSString *)signalingKey
+{
+    return [self.dbConnection stringForKey:TSAccountManager_ServerSignalingKey
+                              inCollection:TSAccountManager_UserAccountCollection];
+}
+
++ (nullable NSString *)serverAuthToken
+{
+    return [[self sharedInstance] serverAuthToken];
+}
+
+- (nullable NSString *)serverAuthToken
+{
+    return [self.dbConnection stringForKey:TSAccountManager_ServerAuthToken
+                              inCollection:TSAccountManager_UserAccountCollection];
+}
+
+- (void)storeServerToken:(NSString *)authToken signalingKey:(NSString *)signalingKey
+{
+    [self.dbConnection readWriteWithBlock:^(YapDatabaseReadWriteTransaction *transaction) {
+        [transaction setObject:authToken
+                        forKey:TSAccountManager_ServerAuthToken
+                  inCollection:TSAccountManager_UserAccountCollection];
+        [transaction setObject:signalingKey
+                        forKey:TSAccountManager_ServerSignalingKey
+                  inCollection:TSAccountManager_UserAccountCollection];
+
+    }];
+}
+
 + (void)unregisterTextSecureWithSuccess:(void (^)())success failure:(void (^)(NSError *error))failureBlock
 {
     [[TSNetworkManager sharedManager] makeRequest:[[TSUnregisterAccountRequest alloc] init]

SignalServiceKit/src/Account/TSAttributes.m

@@ -4,7 +4,6 @@
 
 #import "TSAttributes.h"
 #import "TSAccountManager.h"
-#import "TSStorageManager+keyingMaterial.h"
 
 NS_ASSUME_NONNULL_BEGIN
 

SignalServiceKit/src/Network/API/Requests/TSRequest.m

@@ -3,9 +3,8 @@
 //
 
 #import "TSRequest.h"
-
+#import "TSAccountManager.h"
 #import "TSConstants.h"
-#import "TSStorageManager+keyingMaterial.h"
 
 @implementation TSRequest
 
@@ -37,7 +36,8 @@
 #pragma clang diagnostic pop
 
 - (void)makeAuthenticatedRequest {
-    [self.parameters addEntriesFromDictionary:@{ @"Authorization" : [TSStorageManager serverAuthToken] }];
+    OWSAssert([TSAccountManager serverAuthToken]);
+    [self.parameters addEntriesFromDictionary:@{ @"Authorization" : [TSAccountManager serverAuthToken] }];
 }
 
 @end

SignalServiceKit/src/Network/API/TSNetworkManager.m

@@ -6,7 +6,6 @@
 #import "NSURLSessionDataTask+StatusCode.h"
 #import "OWSSignalService.h"
 #import "TSAccountManager.h"
-#import "TSStorageManager+keyingMaterial.h"
 #import "TSVerifyCodeRequest.h"
 #import <AFNetworking/AFNetworking.h>
 
@@ -74,7 +73,7 @@ typedef void (^failureBlock)(NSURLSessionDataTask *task, NSError *error);
         if (![request isKindOfClass:[TSRequestVerificationCodeRequest class]]) {
             [sessionManager.requestSerializer
                 setAuthorizationHeaderFieldWithUsername:[TSAccountManager localNumber]
-                                               password:[TSStorageManager serverAuthToken]];
+                                               password:[TSAccountManager serverAuthToken]];
         }
 
         if ([request.HTTPMethod isEqualToString:@"GET"]) {

SignalServiceKit/src/Network/WebSockets/TSSocketManager.m

@@ -14,7 +14,6 @@
 #import "SubProtocol.pb.h"
 #import "TSAccountManager.h"
 #import "TSConstants.h"
-#import "TSStorageManager+keyingMaterial.h"
 #import "Threading.h"
 
 static const CGFloat kSocketHeartbeatPeriodSeconds = 30.f;
@@ -380,11 +379,9 @@ NSString *const kNSNotification_SocketManagerStateDidChange = @"kNSNotification_
     [self requestSocketAliveForAtLeastSeconds:kBackgroundKeepSocketAliveDurationSeconds];
 
     if ([message.path isEqualToString:@"/api/v1/message"] && [message.verb isEqualToString:@"PUT"]) {
-
         dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
-
             NSData *decryptedPayload =
-                [Cryptography decryptAppleMessagePayload:message.body withSignalingKey:TSStorageManager.signalingKey];
+                [Cryptography decryptAppleMessagePayload:message.body withSignalingKey:TSAccountManager.signalingKey];
 
             if (!decryptedPayload) {
                 DDLogWarn(@"%@ Failed to decrypt incoming payload or bad HMAC", self.tag);
@@ -485,7 +482,7 @@ NSString *const kNSNotification_SocketManagerStateDidChange = @"kNSNotification_
 - (NSString *)webSocketAuthenticationString {
     return [NSString stringWithFormat:@"?login=%@&password=%@",
                      [[TSAccountManager localNumber] stringByReplacingOccurrencesOfString:@"+" withString:@"%2B"],
-                     [TSStorageManager serverAuthToken]];
+                     [TSAccountManager serverAuthToken]];
 }
 
 #pragma mark - Socket LifeCycle

SignalServiceKit/src/Storage/TSStorageKeys.h

@@ -5,13 +5,6 @@
 #ifndef TextSecureKit_TSStorageKeys_h
 #define TextSecureKit_TSStorageKeys_h
 
-#pragma mark User Account Keys
-
-#define TSStorageUserAccountCollection @"TSStorageUserAccountCollection"
-
-#define TSStorageServerAuthToken @"TSStorageServerAuthToken"
-#define TSStorageServerSignalingKey @"TSStorageServerSignalingKey"
-
 /**
  *  Preferences exposed to the user
  */

SignalServiceKit/src/Storage/TSStorageManager+keyingMaterial.h

@@ -1,29 +0,0 @@
-//
-//  Copyright (c) 2017 Open Whisper Systems. All rights reserved.
-//
-
-#import "TSStorageManager.h"
-
-@interface TSStorageManager (keyingMaterial)
-
-#pragma mark Server Credentials
-
-/**
- *  The server signaling key that's used to encrypt push payloads
- *
- *  @return signaling key
- */
-
-+ (NSString *)signalingKey;
-
-/**
- *  The server auth token allows the TextSecure client to connect to the server
- *
- *  @return server authentication token
- */
-
-+ (NSString *)serverAuthToken;
-
-+ (void)storeServerToken:(NSString *)authToken signalingKey:(NSString *)signalingKey;
-
-@end

SignalServiceKit/src/Storage/TSStorageManager+keyingMaterial.m

@@ -1,41 +0,0 @@
-//
-//  Copyright (c) 2017 Open Whisper Systems. All rights reserved.
-//
-
-#import "TSStorageManager+keyingMaterial.h"
-
-// TODO merge this category extension's functionality into TSAccountManager
-@implementation TSStorageManager (keyingMaterial)
-
-+ (NSString *)signalingKey {
-    return [[self sharedManager] stringForKey:TSStorageServerSignalingKey inCollection:TSStorageUserAccountCollection];
-}
-
-+ (NSString *)serverAuthToken {
-    return [[self sharedManager] stringForKey:TSStorageServerAuthToken inCollection:TSStorageUserAccountCollection];
-}
-
-+ (void)storeServerToken:(NSString *)authToken signalingKey:(NSString *)signalingKey {
-    TSStorageManager *sharedManager = self.sharedManager;
-    [sharedManager.dbReadWriteConnection readWriteWithBlock:^(YapDatabaseReadWriteTransaction *transaction) {
-        [transaction setObject:authToken forKey:TSStorageServerAuthToken inCollection:TSStorageUserAccountCollection];
-        [transaction setObject:signalingKey
-                        forKey:TSStorageServerSignalingKey
-                  inCollection:TSStorageUserAccountCollection];
-
-    }];
-}
-
-#pragma mark - Logging
-
-+ (NSString *)logTag
-{
-    return [NSString stringWithFormat:@"[%@]", self.class];
-}
-
-- (NSString *)logTag
-{
-    return self.class.logTag;
-}
-
-@end