mirror of https://github.com/oxen-io/session-ios
Matthew Chen
8 years ago
parent
7b2bab2abc
commit
63e20cd8bb
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//
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// Copyright (c) 2017 Open Whisper Systems. All rights reserved.
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//
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NS_ASSUME_NONNULL_BEGIN
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// This class can be safely accessed and used from any thread.
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@interface OWSProfilesManager : NSObject
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- (instancetype)init NS_UNAVAILABLE;
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+ (instancetype)sharedManager;
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@end
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NS_ASSUME_NONNULL_END
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@ -0,0 +1,144 @@
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//
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// Copyright (c) 2017 Open Whisper Systems. All rights reserved.
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//
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#import "OWSProfilesManager.h"
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#import "OWSMessageSender.h"
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#import "SecurityUtils.h"
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#import "TSStorageManager.h"
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#import "TextSecureKitEnv.h"
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NS_ASSUME_NONNULL_BEGIN
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NSString *const kOWSProfilesManager_Collection = @"kOWSProfilesManager_Collection";
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// This key is used to persist the local user's profile key.
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NSString *const kOWSProfilesManager_LocalProfileKey = @"kOWSProfilesManager_LocalProfileKey";
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// TODO:
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static const NSInteger kProfileKeyLength = 16;
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@interface OWSProfilesManager ()
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@property (nonatomic, readonly) TSStorageManager *storageManager;
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@property (nonatomic, readonly) OWSMessageSender *messageSender;
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@property (nonatomic, readonly, nullable) NSData *localProfileKey;
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@end
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#pragma mark -
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@implementation OWSProfilesManager
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@synthesize localProfileKey = _localProfileKey;
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+ (instancetype)sharedManager
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{
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static OWSProfilesManager *sharedMyManager = nil;
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static dispatch_once_t onceToken;
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dispatch_once(&onceToken, ^{
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sharedMyManager = [[self alloc] initDefault];
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});
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return sharedMyManager;
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}
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- (instancetype)initDefault
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{
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TSStorageManager *storageManager = [TSStorageManager sharedManager];
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OWSMessageSender *messageSender = [TextSecureKitEnv sharedEnv].messageSender;
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return [self initWithStorageManager:storageManager messageSender:messageSender];
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}
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- (instancetype)initWithStorageManager:(TSStorageManager *)storageManager
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messageSender:(OWSMessageSender *)messageSender
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{
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self = [super init];
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if (!self) {
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return self;
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}
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OWSAssert(storageManager);
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OWSAssert(messageSender);
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_storageManager = storageManager;
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_messageSender = messageSender;
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OWSSingletonAssert();
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// Register this manager with the message sender.
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// This is a circular dependency.
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[messageSender setProfilesManager:self];
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// Try to load.
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_localProfileKey = [self.storageManager objectForKey:kOWSProfilesManager_LocalProfileKey
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inCollection:kOWSProfilesManager_Collection];
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if (!_localProfileKey) {
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// Generate
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_localProfileKey = [OWSProfilesManager generateLocalProfileKey];
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// Persist
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[self.storageManager setObject:_localProfileKey
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forKey:kOWSProfilesManager_LocalProfileKey
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inCollection:kOWSProfilesManager_Collection];
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}
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OWSAssert(_localProfileKey.length == kProfileKeyLength);
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return self;
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}
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- (void)dealloc
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{
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[[NSNotificationCenter defaultCenter] removeObserver:self];
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}
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- (void)observeNotifications
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{
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[[NSNotificationCenter defaultCenter] addObserver:self
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selector:@selector(applicationDidBecomeActive:)
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name:UIApplicationDidBecomeActiveNotification
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object:nil];
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}
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#pragma mark - Local Profile Key
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+ (NSData *)generateLocalProfileKey
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{
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// TODO:
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OWSFail(@"Profile key generation is not yet implemented.");
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return [SecurityUtils generateRandomBytes:kProfileKeyLength];
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}
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- (nullable NSData *)localProfileKey
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{
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OWSAssert(_localProfileKey.length == kProfileKeyLength);
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return _localProfileKey;
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}
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#pragma mark - Notifications
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- (void)applicationDidBecomeActive:(NSNotification *)notification
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{
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OWSAssert([NSThread isMainThread]);
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@synchronized(self)
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{
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// TODO: Sync if necessary.
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}
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}
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#pragma mark - Logging
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+ (NSString *)tag
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{
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return [NSString stringWithFormat:@"[%@]", self.class];
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}
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- (NSString *)tag
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{
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return self.class.tag;
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}
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@end
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NS_ASSUME_NONNULL_END
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