Fix minor code style issues

Signal/src/Jobs/SessionResetJob.swift

@@ -108,9 +108,9 @@ public class SessionResetOperation: OWSOperation, DurableOperation {
     override public func run() {
         assert(self.durableOperationDelegate != nil)
 
-        /* Loki Original Code
+        /* Loki: Original code
          * We don't want to delete session. Ref: SignalServiceKit/Loki/Docs/SessionReset.md
-         * ==================
+         * ================
         if firstAttempt {
             self.dbConnection.readWrite { transaction in
                 Logger.info("deleting sessions for recipient: \(self.recipientId)")
@@ -118,7 +118,8 @@ public class SessionResetOperation: OWSOperation, DurableOperation {
             }
             firstAttempt = false
         }
-        */
+         * ================
+         */
 
         let endSessionMessage = EndSessionMessage(timestamp: NSDate.ows_millisecondTimeStamp(), in: self.contactThread)
 
@@ -132,22 +133,21 @@ public class SessionResetOperation: OWSOperation, DurableOperation {
                 // Otherwise if we send another message before them, they wont have the session to decrypt it.
                 self.primaryStorage.archiveAllSessions(forContact: self.recipientId, protocolContext: transaction)
 
-                /* Loki original code
-                 * ==================
+                /* Loki: Original code
+                 * ================
                 let message = TSInfoMessage(timestamp: NSDate.ows_millisecondTimeStamp(),
                                             in: self.contactThread,
                                             messageType: TSInfoMessageType.typeSessionDidEnd)
                 message.save(with: transaction)
-                */
+                 * ================
+                 */
                 
                 if (self.contactThread.sessionResetState != .requestReceived) {
-                    let message = TSInfoMessage(timestamp: NSDate.ows_millisecondTimeStamp(),
-                                                in: self.contactThread,
-                                                messageType: .typeLokiSessionResetProgress)
+                    let message = TSInfoMessage(timestamp: NSDate.ows_millisecondTimeStamp(), in: self.contactThread, messageType: .typeLokiSessionResetProgress)
                     message.save(with: transaction)
                     
-                    /// Loki: We have initiated a session reset
-                    Logger.debug("[Loki Session Reset] Session reset has been initiated")
+                    // Loki: We have initiated a session reset
+                    Logger.debug("[Loki] Session reset has been initiated.")
                     self.contactThread.sessionResetState = .initiated
                     self.contactThread.save(with: transaction)
                 }

Signal/src/ViewControllers/ConversationView/Cells/OWSSystemMessageCell.m

@@ -273,7 +273,7 @@ typedef void (^SystemMessageActionBlock)(void);
             case TSInfoMessageAddGroupToProfileWhitelistOffer:
             case TSInfoMessageTypeGroupUpdate:
             case TSInfoMessageTypeGroupQuit:
-            case TSInfoMessageTypeLokiSessionResetProgress:
+            case TSInfoMessageTypeLokiSessionResetInProgress:
             case TSInfoMessageTypeLokiSessionResetDone:
                 return nil;
             case TSInfoMessageTypeDisappearingMessagesUpdate: {
@@ -461,7 +461,7 @@ typedef void (^SystemMessageActionBlock)(void);
     switch (message.messageType) {
         case TSInfoMessageUserNotRegistered:
         case TSInfoMessageTypeSessionDidEnd:
-        case TSInfoMessageTypeLokiSessionResetProgress:
+        case TSInfoMessageTypeLokiSessionResetInProgress:
         case TSInfoMessageTypeLokiSessionResetDone:
             return nil;
         case TSInfoMessageTypeUnsupportedMessage:

SignalServiceKit/src/Contacts/Threads/TSContactThread.h

@@ -10,9 +10,9 @@ NS_ASSUME_NONNULL_BEGIN
 typedef NS_ENUM(NSInteger, TSContactThreadSessionResetState) {
     // No ongoing session reset
     TSContactThreadSessionResetStateNone,
-    // We initiated session reset
+    // We initiated a session reset
     TSContactThreadSessionResetStateInitiated,
-    // We received the session reset
+    // We received a session reset
     TSContactThreadSessionResetStateRequestReceived,
 };
 
@@ -20,7 +20,7 @@ extern NSString *const TSContactThreadPrefix;
 
 @interface TSContactThread : TSThread
 
-// Loki: The current session reset state with this thread
+// Loki: The current session reset state for this thread
 @property (atomic) TSContactThreadSessionResetState sessionResetState;
 
 @property (nonatomic) BOOL hasDismissedOffers;

SignalServiceKit/src/Loki/Extensions/OWSPrimaryStorage+Loki.h

@@ -22,7 +22,7 @@ NS_ASSUME_NONNULL_BEGIN
  
  @param pubKey The hex encoded public key of the contact.
  @param transaction A `YapDatabaseReadTransaction`.
- @return The record associated with the contact or nil if it didn't exist.
+ @return The record associated with the contact or `nil` if it doesn't exist.
  */
 - (PreKeyRecord *_Nullable)getPreKeyForContact:(NSString *)pubKey transaction:(YapDatabaseReadTransaction *)transaction;
 

SignalServiceKit/src/Loki/Extensions/OWSPrimaryStorage+Loki.m

@@ -38,13 +38,10 @@
     int preKeyId = [transaction intForKey:pubKey inCollection:LokiPreKeyContactCollection];
     
     // If we don't have an id then return nil
-    if (preKeyId <= 0) {
-        return nil;
-    }
+    if (preKeyId <= 0) { return nil; }
     
-    /// thows_loadPreKey doesn't allow us to pass transaction ;(
-    return [transaction preKeyRecordForKey:[self keyFromInt:preKeyId]
-                              inCollection:OWSPrimaryStoragePreKeyStoreCollection];
+    /// throws_loadPreKey doesn't allow us to pass transaction ;(
+    return [transaction preKeyRecordForKey:[self keyFromInt:preKeyId] inCollection:OWSPrimaryStoragePreKeyStoreCollection];
 }
 
 - (PreKeyRecord *)getOrCreatePreKeyForContact:(NSString *)pubKey {

SignalServiceKit/src/Loki/Extensions/SessionCipher+Loki.h

@@ -1,4 +1,4 @@
-/// Loki: Refer to Docs/SessionReset.md for explanations
+// Loki: Refer to Docs/SessionReset.md for explanations
 
 #import "SessionCipher.h"
 
@@ -11,14 +11,14 @@ extern NSString *const kNSNotificationKey_ContactPubKey;
 
 /**
  Decrypt the given `CipherMessage`.
- This function is a wrapper around `throws_decrypt:protocolContext:` and adds on the custom loki session handling ontop.
- Refer to SignalServiceKit/Loki/Docs/SessionReset.md for overview on how it works.
+ This function is a wrapper around `throws_decrypt:protocolContext:` and adds on the custom Loki session handling.
+ Refer to SignalServiceKit/Loki/Docs/SessionReset.md for an overview of how it works.
 
  @param whisperMessage The cipher message.
- @param protocolContext The protocol context (YapDatabaseReadWriteTransaction)
+ @param protocolContext The protocol context (a `YapDatabaseReadWriteTransaction`).
  @return The decrypted data.
  */
-- (NSData *)throws_lokiDecrypt:(id<CipherMessage>)whisperMessage protocolContext:(nullable id)protocolContext NS_SWIFT_UNAVAILABLE("throws objc exceptions");
+- (NSData *)throws_lokiDecrypt:(id<CipherMessage>)whisperMessage protocolContext:(nullable id)protocolContext NS_SWIFT_UNAVAILABLE("throws Obj-C exceptions");
 
 @end
 

SignalServiceKit/src/Loki/Extensions/SessionCipher+Loki.m

@@ -1,4 +1,4 @@
-/// Loki: Refer to Docs/SessionReset.md for explanations
+// Loki: Refer to Docs/SessionReset.md for explanations
 
 #import "SessionCipher+Loki.h"
 #import "NSNotificationCenter+OWS.h"
@@ -47,36 +47,26 @@ NSString *const kNSNotificationKey_ContactPubKey = @"kNSNotificationKey_ContactP
     SessionState *state = record.sessionState;
     
     // Check if session is initialized
-    if (!state.hasSenderChain) {
-        return nil;
-    }
+    if (!state.hasSenderChain) { return nil; }
     
     return state;
 }
 
-/// Handle any loki session reset stuff
-- (void)handleSessionReset:(id<CipherMessage>)whisperMessage
-             previousState:(SessionState *_Nullable)previousState
-           protocolContext:(nullable id)protocolContext
+/// Handle any Loki session reset stuff
+- (void)handleSessionReset:(id<CipherMessage>)whisperMessage previousState:(SessionState *_Nullable)previousState protocolContext:(nullable id)protocolContext
 {
     // Don't bother doing anything if we didn't have a session before
-    if (!previousState) {
-        return;
-    }
+    if (!previousState) { return; }
     
     OWSAssertDebug([protocolContext isKindOfClass:[YapDatabaseReadWriteTransaction class]]);
     YapDatabaseReadWriteTransaction *transaction = protocolContext;
     
     // Get the thread
     TSContactThread *thread = [TSContactThread getThreadWithContactId:self.recipientId transaction:transaction];
-    if (!thread) {
-        return;
-    }
+    if (!thread) { return; }
     
     // Bail early if no session reset is in progress
-    if (thread.sessionResetState == TSContactThreadSessionResetStateNone) {
-        return;
-    }
+    if (thread.sessionResetState == TSContactThreadSessionResetStateNone) { return; }
     
     BOOL sessionResetReceived = thread.sessionResetState == TSContactThreadSessionResetStateRequestReceived;
     SessionState *_Nullable currentState = [self getCurrentState:protocolContext];
@@ -106,12 +96,8 @@ NSString *const kNSNotificationKey_ContactPubKey = @"kNSNotificationKey_ContactP
 /// Send a notification about a new session being adopted
 - (void)notifySessionAdopted
 {
-    [[NSNotificationCenter defaultCenter]
-     postNotificationNameAsync:kNSNotificationName_SessionAdopted
-     object:nil
-     userInfo:@{
-                kNSNotificationKey_ContactPubKey : self.recipientId,
-                }];
+    NSDictionary *userInfo = @{ kNSNotificationKey_ContactPubKey : self.recipientId };
+    [NSNotificationCenter.defaultCenter postNotificationNameAsync:kNSNotificationName_SessionAdopted object:nil userInfo:userInfo];
 }
 
 /// Delete all other sessions except the given one
@@ -121,10 +107,7 @@ NSString *const kNSNotificationKey_ContactPubKey = @"kNSNotificationKey_ContactP
     [record removePreviousSessionStates];
     [record setState:state];
     
-    [self.sessionStore storeSession:self.recipientId
-                           deviceId:self.deviceId
-                            session:record
-                    protocolContext:protocolContext];
+    [self.sessionStore storeSession:self.recipientId deviceId:self.deviceId session:record protocolContext:protocolContext];
 }
 
 /// Set the given session as the active one while archiving the old one
@@ -136,17 +119,14 @@ NSString *const kNSNotificationKey_ContactPubKey = @"kNSNotificationKey_ContactP
     [record.previousSessionStates enumerateObjectsWithOptions:NSEnumerationReverse usingBlock:^(SessionState *obj, NSUInteger idx, BOOL *stop) {
         if ([state.aliceBaseKey isEqualToData:obj.aliceBaseKey]) {
             [record.previousSessionStates removeObjectAtIndex:idx];
-            *stop = true;
+            *stop = YES;
         }
     }];
     
     // Promote it so the previous state gets archived
     [record promoteState:state];
     
-    [self.sessionStore storeSession:self.recipientId
-                           deviceId:self.deviceId
-                            session:record
-                    protocolContext:protocolContext];
+    [self.sessionStore storeSession:self.recipientId deviceId:self.deviceId session:record protocolContext:protocolContext];
 }
 
 /// Check that we have matching prekeys in the case of a `PreKeyWhisperMessage`
@@ -155,26 +135,22 @@ NSString *const kNSNotificationKey_ContactPubKey = @"kNSNotificationKey_ContactP
     OWSAssertDebug([protocolContext isKindOfClass:[YapDatabaseReadTransaction class]]);
     YapDatabaseReadTransaction *transaction = protocolContext;
     
-    /// We only want to look at `PreKeyWhisperMessage`
-    if (![whisperMessage isKindOfClass:[PreKeyWhisperMessage class]]) {
-        return;
-    }
+    // We only want to look at `PreKeyWhisperMessage`
+    if (![whisperMessage isKindOfClass:[PreKeyWhisperMessage class]]) { return; }
 
-    /// We need the primary storage to access contact prekeys
-    if (![self.prekeyStore isKindOfClass:[OWSPrimaryStorage class]]) {
-        return;
-    }
+    // We need the primary storage to access contact prekeys
+    if (![self.prekeyStore isKindOfClass:[OWSPrimaryStorage class]]) { return; }
     
     PreKeyWhisperMessage *preKeyMessage = whisperMessage;
     OWSPrimaryStorage *primaryStorage = self.prekeyStore;
     
     PreKeyRecord *_Nullable storedPreKey = [primaryStorage getPreKeyForContact:self.recipientId transaction:transaction];
-    if(!storedPreKey) {
-        OWSRaiseException(@"LokiInvalidPreKey", @"Received a friend request from a pubkey for which no prekey bundle was created");
+    if (!storedPreKey) {
+        OWSRaiseException(@"LokiInvalidPreKey", @"Received a friend request from a public key for which no prekey bundle was created.");
     }
     
     if (storedPreKey.Id != preKeyMessage.prekeyID) {
-        OWSRaiseException(@"LokiPreKeyIdsDontMatch", @"Received a preKeyWhisperMessage (friend request accept) from an unknown source");
+        OWSRaiseException(@"LokiPreKeyIdsDontMatch", @"Received a PreKeyWhisperMessage (friend request accept) from an unknown source.");
     }
 }
 

SignalServiceKit/src/Loki/Messages/OWSFriendRequestMessage.h

@@ -1,4 +1,3 @@
-#import "SignalServiceKit.h"
 #import "TSOutgoingMessage.h"
 
 NS_ASSUME_NONNULL_BEGIN

SignalServiceKit/src/Messages/Interactions/TSInfoMessage.h

@@ -21,7 +21,7 @@ typedef NS_ENUM(NSInteger, TSInfoMessageType) {
     TSInfoMessageVerificationStateChange,
     TSInfoMessageAddUserToProfileWhitelistOffer,
     TSInfoMessageAddGroupToProfileWhitelistOffer,
-    TSInfoMessageTypeLokiSessionResetProgress,
+    TSInfoMessageTypeLokiSessionResetInProgress,
     TSInfoMessageTypeLokiSessionResetDone,
 };
 

SignalServiceKit/src/Messages/Interactions/TSInfoMessage.m

@@ -117,7 +117,7 @@ NSUInteger TSInfoMessageSchemaVersion = 1;
 - (NSString *)previewTextWithTransaction:(YapDatabaseReadTransaction *)transaction
 {
     switch (_messageType) {
-        case TSInfoMessageTypeLokiSessionResetProgress:
+        case TSInfoMessageTypeLokiSessionResetInProgress:
             return NSLocalizedString(@"Secure session reset in progress", nil);
         case TSInfoMessageTypeLokiSessionResetDone:
             return NSLocalizedString(@"Secure session reset done", nil);

SignalServiceKit/src/Messages/OWSMessageDecrypter.m

@@ -438,10 +438,11 @@ NSError *EnsureDecryptError(NSError *_Nullable error, NSString *fallbackErrorDes
                 NSData *_Nullable plaintextData =
                     [[cipher throws_lokiDecrypt:cipherMessage protocolContext:transaction] removePadding];
                 
-                /* Loki original code
-                 * =================
+                /* Loki: Original code
+                 * ================
                 NSData *_Nullable plaintextData =
                     [[cipher throws_decrypt:cipherMessage protocolContext:transaction] removePadding];
+                 * ================
                  */
                 OWSMessageDecryptResult *result = [OWSMessageDecryptResult resultWithEnvelopeData:envelopeData
                                                                                     plaintextData:plaintextData

SignalServiceKit/src/Messages/OWSMessageManager.m

@@ -88,11 +88,8 @@ NS_ASSUME_NONNULL_BEGIN
     _dbConnection = primaryStorage.newDatabaseConnection;
     _incomingMessageFinder = [[OWSIncomingMessageFinder alloc] initWithPrimaryStorage:primaryStorage];
     
-    /// Loki: Add observation for new session
-    [[NSNotificationCenter defaultCenter] addObserver:self
-                                             selector:@selector(onNewSessionAdopted:)
-                                                 name:kNSNotificationName_SessionAdopted
-                                               object:nil];
+    // Loki: Add observation for new session
+    [NSNotificationCenter.defaultCenter addObserver:self selector:@selector(onNewSessionAdopted:) name:kNSNotificationName_SessionAdopted object:nil];
 
     OWSSingletonAssert();
 
@@ -100,7 +97,7 @@ NS_ASSUME_NONNULL_BEGIN
 }
 
 - (void)dealloc {
-    [[NSNotificationCenter defaultCenter] removeObserver:self];
+    [NSNotificationCenter.defaultCenter removeObserver:self];
 }
 
 #pragma mark - Dependencies
@@ -1004,14 +1001,15 @@ NS_ASSUME_NONNULL_BEGIN
     TSContactThread *thread = [TSContactThread getOrCreateThreadWithContactId:envelope.source transaction:transaction];
 
     // MJK TODO - safe to remove senderTimestamp
-    [[[TSInfoMessage alloc] initWithTimestamp:[NSDate ows_millisecondTimeStamp]
+    [[[TSInfoMessage alloc] initWithTimestamp:NSDate.ows_millisecondTimeStamp
                                      inThread:thread
-                                  messageType:TSInfoMessageTypeLokiSessionResetProgress] saveWithTransaction:transaction];
-    /* Loki original code
-     * ==================
+                                  messageType:TSInfoMessageTypeLokiSessionResetInProgress] saveWithTransaction:transaction];
+    /* Loki: Original code
+     * ================
     [[[TSInfoMessage alloc] initWithTimestamp:[NSDate ows_millisecondTimeStamp]
                                      inThread:thread
                                   messageType:TSInfoMessageTypeSessionDidEnd] saveWithTransaction:transaction];
+     * ================
      */
 
     /// Loki: Archive all our sessions
@@ -1026,11 +1024,12 @@ NS_ASSUME_NONNULL_BEGIN
     OWSEphemeralMessage *emptyMessage = [OWSEphemeralMessage createEmptyOutgoingMessageInThread:thread];
     [self.messageSenderJobQueue addMessage:emptyMessage transaction:transaction];
 
-    OWSLogDebug(@"[Loki Session Reset] Session reset has been received from %@", envelope.source);
+    OWSLogDebug(@"[Loki] Session reset has been received from %@.", envelope.source);
     
-    /* Loki Original Code
-     * ===================
+    /* Loki: Original code
+     * ================
     [self.primaryStorage deleteAllSessionsForContact:envelope.source protocolContext:transaction];
+     * ================
      */
 }
 
@@ -1688,15 +1687,13 @@ NS_ASSUME_NONNULL_BEGIN
 
 - (void)onNewSessionAdopted:(NSNotification *)notification {
     NSString *pubKey = notification.userInfo[kNSNotificationKey_ContactPubKey];
-    if (pubKey.length == 0) {
-        return;
-    }
+    if (pubKey.length == 0) { return; }
     
     [self.dbConnection readWriteWithBlock:^(YapDatabaseReadWriteTransaction *transaction) {
         
         TSContactThread *_Nullable thread = [TSContactThread getThreadWithContactId:pubKey transaction:transaction];
         if (!thread) {
-            OWSLogDebug(@"[Loki Session Reset] New session was adopted but we failed to get the thread for %@", pubKey);
+            OWSLogDebug(@"[Loki] New session was adopted but we failed to get the thread for %@.", pubKey);
             return;
         }
         
@@ -1707,7 +1704,7 @@ NS_ASSUME_NONNULL_BEGIN
         }
         
         // Show session reset done message
-        [[[TSInfoMessage alloc] initWithTimestamp:[NSDate ows_millisecondTimeStamp]
+        [[[TSInfoMessage alloc] initWithTimestamp:NSDate.ows_millisecondTimeStamp
                                          inThread:thread
                                       messageType:TSInfoMessageTypeLokiSessionResetDone] saveWithTransaction:transaction];