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session-ios/SignalServiceKit/src/Messages/OWSMessageManager.m

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//
// Copyright (c) 2018 Open Whisper Systems. All rights reserved.
//
#import "OWSMessageManager.h"
#import "AppContext.h"
#import "AppReadiness.h"
#import "ContactsManagerProtocol.h"
#import "Cryptography.h"
#import "MimeTypeUtil.h"
#import "NSDate+OWS.h"
#import "NotificationsProtocol.h"
#import "OWSAttachmentsProcessor.h"
#import "OWSBlockingManager.h"
#import "OWSCallMessageHandler.h"
#import "OWSDevice.h"
#import "OWSDisappearingConfigurationUpdateInfoMessage.h"
#import "OWSDisappearingMessagesConfiguration.h"
#import "OWSDisappearingMessagesJob.h"
#import "OWSIdentityManager.h"
#import "OWSIncomingMessageFinder.h"
#import "OWSIncomingSentMessageTranscript.h"
#import "OWSMessageSender.h"
#import "OWSMessageUtils.h"
#import "OWSReadReceiptManager.h"
#import "OWSRecordTranscriptJob.h"
#import "OWSSyncConfigurationMessage.h"
#import "OWSSyncContactsMessage.h"
#import "OWSSyncGroupsMessage.h"
#import "OWSSyncGroupsRequestMessage.h"
#import "ProfileManagerProtocol.h"
#import "TSAccountManager.h"
#import "TSContactThread.h"
#import "TSDatabaseView.h"
#import "TSGroupModel.h"
#import "TSGroupThread.h"
#import "TSIncomingMessage.h"
#import "TSInfoMessage.h"
#import "TSNetworkManager.h"
#import "TSOutgoingMessage.h"
#import "TSStorageManager+SessionStore.h"
#import "TSStorageManager.h"
#import "TextSecureKitEnv.h"
#import <YapDatabase/YapDatabase.h>
NS_ASSUME_NONNULL_BEGIN
@interface OWSMessageManager ()
@property (nonatomic, readonly) id<OWSCallMessageHandler> callMessageHandler;
@property (nonatomic, readonly) id<ContactsManagerProtocol> contactsManager;
@property (nonatomic, readonly) TSStorageManager *storageManager;
@property (nonatomic, readonly) OWSMessageSender *messageSender;
@property (nonatomic, readonly) OWSIncomingMessageFinder *incomingMessageFinder;
@property (nonatomic, readonly) OWSBlockingManager *blockingManager;
@property (nonatomic, readonly) OWSIdentityManager *identityManager;
@property (nonatomic, readonly) TSNetworkManager *networkManager;
@property (nonatomic, readonly) YapDatabaseConnection *dbConnection;
@end
#pragma mark -
@implementation OWSMessageManager
+ (instancetype)sharedManager
{
static OWSMessageManager *sharedMyManager = nil;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
sharedMyManager = [[self alloc] initDefault];
});
return sharedMyManager;
}
- (instancetype)initDefault
{
TSNetworkManager *networkManager = [TSNetworkManager sharedManager];
TSStorageManager *storageManager = [TSStorageManager sharedManager];
id<ContactsManagerProtocol> contactsManager = [TextSecureKitEnv sharedEnv].contactsManager;
id<OWSCallMessageHandler> callMessageHandler = [TextSecureKitEnv sharedEnv].callMessageHandler;
OWSIdentityManager *identityManager = [OWSIdentityManager sharedManager];
OWSMessageSender *messageSender = [TextSecureKitEnv sharedEnv].messageSender;
return [self initWithNetworkManager:networkManager
storageManager:storageManager
callMessageHandler:callMessageHandler
contactsManager:contactsManager
identityManager:identityManager
messageSender:messageSender];
}
- (instancetype)initWithNetworkManager:(TSNetworkManager *)networkManager
storageManager:(TSStorageManager *)storageManager
callMessageHandler:(id<OWSCallMessageHandler>)callMessageHandler
contactsManager:(id<ContactsManagerProtocol>)contactsManager
identityManager:(OWSIdentityManager *)identityManager
messageSender:(OWSMessageSender *)messageSender
{
self = [super init];
if (!self) {
return self;
}
_storageManager = storageManager;
_networkManager = networkManager;
_callMessageHandler = callMessageHandler;
_contactsManager = contactsManager;
_identityManager = identityManager;
_messageSender = messageSender;
_dbConnection = storageManager.newDatabaseConnection;
_incomingMessageFinder = [[OWSIncomingMessageFinder alloc] initWithStorageManager:storageManager];
_blockingManager = [OWSBlockingManager sharedManager];
OWSSingletonAssert();
OWSAssert(CurrentAppContext().isMainApp);
[self startObserving];
return self;
}
- (void)startObserving
{
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(yapDatabaseModified:)
name:YapDatabaseModifiedNotification
object:TSStorageManager.sharedManager.dbNotificationObject];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(yapDatabaseModified:)
name:YapDatabaseModifiedExternallyNotification
object:nil];
}
- (void)yapDatabaseModified:(NSNotification *)notification
{
if (AppReadiness.isAppReady) {
[OWSMessageUtils.sharedManager updateApplicationBadgeCount];
}
}
#pragma mark - Blocking
- (BOOL)isEnvelopeBlocked:(OWSSignalServiceProtosEnvelope *)envelope
{
OWSAssert(envelope);
return [_blockingManager isRecipientIdBlocked:envelope.source];
}
#pragma mark - message handling
- (void)processEnvelope:(OWSSignalServiceProtosEnvelope *)envelope
plaintextData:(NSData *_Nullable)plaintextData
transaction:(YapDatabaseReadWriteTransaction *)transaction
{
OWSAssert(envelope);
OWSAssert(transaction);
OWSAssert([TSAccountManager isRegistered]);
OWSAssert(CurrentAppContext().isMainApp);
DDLogInfo(@"%@ handling decrypted envelope: %@", self.logTag, [self descriptionForEnvelope:envelope]);
OWSAssert(envelope.source.length > 0);
OWSAssert(![self isEnvelopeBlocked:envelope]);
switch (envelope.type) {
case OWSSignalServiceProtosEnvelopeTypeCiphertext:
case OWSSignalServiceProtosEnvelopeTypePrekeyBundle:
if (plaintextData) {
[self handleEnvelope:envelope plaintextData:plaintextData transaction:transaction];
} else {
OWSFail(
@"%@ missing decrypted data for envelope: %@", self.logTag, [self descriptionForEnvelope:envelope]);
}
break;
case OWSSignalServiceProtosEnvelopeTypeReceipt:
OWSAssert(!plaintextData);
[self handleDeliveryReceipt:envelope transaction:transaction];
break;
// Other messages are just dismissed for now.
case OWSSignalServiceProtosEnvelopeTypeKeyExchange:
DDLogWarn(@"Received Key Exchange Message, not supported");
break;
case OWSSignalServiceProtosEnvelopeTypeUnknown:
DDLogWarn(@"Received an unknown message type");
break;
default:
DDLogWarn(@"Received unhandled envelope type: %d", (int)envelope.type);
break;
}
}
- (void)handleDeliveryReceipt:(OWSSignalServiceProtosEnvelope *)envelope
transaction:(YapDatabaseReadWriteTransaction *)transaction
{
OWSAssert(envelope);
OWSAssert(transaction);
// Old-style delivery notices don't include a "delivery timestamp".
[self processDeliveryReceiptsFromRecipientId:envelope.source
sentTimestamps:@[
@(envelope.timestamp),
]
deliveryTimestamp:nil
transaction:transaction];
}
// deliveryTimestamp is an optional parameter, since legacy
// delivery receipts don't have a "delivery timestamp". Those
// messages repurpose the "timestamp" field to indicate when the
// corresponding message was originally sent.
- (void)processDeliveryReceiptsFromRecipientId:(NSString *)recipientId
sentTimestamps:(NSArray<NSNumber *> *)sentTimestamps
deliveryTimestamp:(NSNumber *_Nullable)deliveryTimestamp
transaction:(YapDatabaseReadWriteTransaction *)transaction
{
OWSAssert(recipientId);
OWSAssert(sentTimestamps);
OWSAssert(transaction);
for (NSNumber *nsTimestamp in sentTimestamps) {
uint64_t timestamp = [nsTimestamp unsignedLongLongValue];
NSArray<TSOutgoingMessage *> *messages
= (NSArray<TSOutgoingMessage *> *)[TSInteraction interactionsWithTimestamp:timestamp
ofClass:[TSOutgoingMessage class]
withTransaction:transaction];
if (messages.count < 1) {
// The service sends delivery receipts for "unpersisted" messages
// like group updates, so these errors are expected to a certain extent.
//
// TODO: persist "early" delivery receipts.
DDLogInfo(@"%@ Missing message for delivery receipt: %llu", self.logTag, timestamp);
} else {
if (messages.count > 1) {
DDLogInfo(@"%@ More than one message (%zd) for delivery receipt: %llu",
self.logTag,
messages.count,
timestamp);
}
for (TSOutgoingMessage *outgoingMessage in messages) {
[outgoingMessage updateWithDeliveredToRecipientId:recipientId
deliveryTimestamp:deliveryTimestamp
transaction:transaction];
}
}
}
}
- (void)handleEnvelope:(OWSSignalServiceProtosEnvelope *)envelope
plaintextData:(NSData *)plaintextData
transaction:(YapDatabaseReadWriteTransaction *)transaction
{
OWSAssert(envelope);
OWSAssert(plaintextData);
OWSAssert(transaction);
OWSAssert(envelope.hasTimestamp && envelope.timestamp > 0);
OWSAssert(envelope.hasSource && envelope.source.length > 0);
OWSAssert(envelope.hasSourceDevice && envelope.sourceDevice > 0);
BOOL duplicateEnvelope = [self.incomingMessageFinder existsMessageWithTimestamp:envelope.timestamp
sourceId:envelope.source
sourceDeviceId:envelope.sourceDevice
transaction:transaction];
if (duplicateEnvelope) {
DDLogInfo(@"%@ Ignoring previously received envelope from %@ with timestamp: %llu",
self.logTag,
envelopeAddress(envelope),
envelope.timestamp);
return;
}
if (envelope.hasContent) {
OWSSignalServiceProtosContent *content = [OWSSignalServiceProtosContent parseFromData:plaintextData];
DDLogInfo(@"%@ handling content: <Content: %@>", self.logTag, [self descriptionForContent:content]);
if (content.hasSyncMessage) {
[self handleIncomingEnvelope:envelope withSyncMessage:content.syncMessage transaction:transaction];
[[OWSDeviceManager sharedManager] setHasReceivedSyncMessage];
} else if (content.hasDataMessage) {
[self handleIncomingEnvelope:envelope withDataMessage:content.dataMessage transaction:transaction];
} else if (content.hasCallMessage) {
[self handleIncomingEnvelope:envelope withCallMessage:content.callMessage];
} else if (content.hasNullMessage) {
DDLogInfo(@"%@ Received null message.", self.logTag);
} else if (content.hasReceiptMessage) {
[self handleIncomingEnvelope:envelope withReceiptMessage:content.receiptMessage transaction:transaction];
} else {
DDLogWarn(@"%@ Ignoring envelope. Content with no known payload", self.logTag);
}
} else if (envelope.hasLegacyMessage) { // DEPRECATED - Remove after all clients have been upgraded.
OWSSignalServiceProtosDataMessage *dataMessage =
[OWSSignalServiceProtosDataMessage parseFromData:plaintextData];
DDLogInfo(
@"%@ handling message: <DataMessage: %@ />", self.logTag, [self descriptionForDataMessage:dataMessage]);
[self handleIncomingEnvelope:envelope withDataMessage:dataMessage transaction:transaction];
} else {
OWSProdInfoWEnvelope([OWSAnalyticsEvents messageManagerErrorEnvelopeNoActionablePayload], envelope);
}
}
- (void)handleIncomingEnvelope:(OWSSignalServiceProtosEnvelope *)envelope
withDataMessage:(OWSSignalServiceProtosDataMessage *)dataMessage
transaction:(YapDatabaseReadWriteTransaction *)transaction
{
OWSAssert(envelope);
OWSAssert(dataMessage);
OWSAssert(transaction);
if (dataMessage.hasTimestamp) {
if (dataMessage.timestamp <= 0) {
DDLogError(@"%@ Ignoring message with invalid data message timestamp: %@", self.logTag, envelope.source);
return;
}
// This prevents replay attacks by the service.
if (dataMessage.timestamp != envelope.timestamp) {
DDLogError(
@"%@ Ignoring message with non-matching data message timestamp: %@", self.logTag, envelope.source);
return;
}
}
if ([dataMessage hasProfileKey]) {
NSData *profileKey = [dataMessage profileKey];
NSString *recipientId = envelope.source;
if (profileKey.length == kAES256_KeyByteLength) {
[self.profileManager setProfileKeyData:profileKey forRecipientId:recipientId];
} else {
OWSFail(
@"Unexpected profile key length:%lu on message from:%@", (unsigned long)profileKey.length, recipientId);
}
}
if (dataMessage.hasGroup) {
TSGroupThread *_Nullable groupThread =
[TSGroupThread threadWithGroupId:dataMessage.group.id transaction:transaction];
if (!groupThread) {
// Unknown group.
if (dataMessage.group.type == OWSSignalServiceProtosGroupContextTypeUpdate) {
// Accept group updates for unknown groups.
} else if (dataMessage.group.type == OWSSignalServiceProtosGroupContextTypeDeliver) {
[self sendGroupInfoRequest:dataMessage.group.id envelope:envelope transaction:transaction];
return;
} else {
DDLogInfo(@"%@ Ignoring group message for unknown group from: %@", self.logTag, envelope.source);
return;
}
}
}
if ((dataMessage.flags & OWSSignalServiceProtosDataMessageFlagsEndSession) != 0) {
[self handleEndSessionMessageWithEnvelope:envelope dataMessage:dataMessage transaction:transaction];
} else if ((dataMessage.flags & OWSSignalServiceProtosDataMessageFlagsExpirationTimerUpdate) != 0) {
[self handleExpirationTimerUpdateMessageWithEnvelope:envelope dataMessage:dataMessage transaction:transaction];
} else if ((dataMessage.flags & OWSSignalServiceProtosDataMessageFlagsProfileKeyUpdate) != 0) {
[self handleProfileKeyMessageWithEnvelope:envelope dataMessage:dataMessage];
} else if (dataMessage.attachments.count > 0) {
[self handleReceivedMediaWithEnvelope:envelope dataMessage:dataMessage transaction:transaction];
} else {
[self handleReceivedTextMessageWithEnvelope:envelope dataMessage:dataMessage transaction:transaction];
if ([self isDataMessageGroupAvatarUpdate:dataMessage]) {
DDLogVerbose(@"%@ Data message had group avatar attachment", self.logTag);
[self handleReceivedGroupAvatarUpdateWithEnvelope:envelope dataMessage:dataMessage transaction:transaction];
}
}
}
- (void)sendGroupInfoRequest:(NSData *)groupId
envelope:(OWSSignalServiceProtosEnvelope *)envelope
transaction:(YapDatabaseReadWriteTransaction *)transaction
{
OWSAssert(groupId.length > 0);
OWSAssert(envelope);
OWSAssert(transaction);
if (groupId.length < 1) {
return;
}
// FIXME: https://github.com/signalapp/Signal-iOS/issues/1340
DDLogInfo(@"%@ Sending group info request: %@", self.logTag, envelopeAddress(envelope));
NSString *recipientId = envelope.source;
TSThread *thread = [TSContactThread getOrCreateThreadWithContactId:recipientId transaction:transaction];
OWSSyncGroupsRequestMessage *syncGroupsRequestMessage =
[[OWSSyncGroupsRequestMessage alloc] initWithThread:thread groupId:groupId];
[self.messageSender enqueueMessage:syncGroupsRequestMessage
success:^{
DDLogWarn(@"%@ Successfully sent Request Group Info message.", self.logTag);
}
failure:^(NSError *error) {
DDLogError(@"%@ Failed to send Request Group Info message with error: %@", self.logTag, error);
}];
}
- (id<ProfileManagerProtocol>)profileManager
{
return [TextSecureKitEnv sharedEnv].profileManager;
}
- (void)handleIncomingEnvelope:(OWSSignalServiceProtosEnvelope *)envelope
withReceiptMessage:(OWSSignalServiceProtosReceiptMessage *)receiptMessage
transaction:(YapDatabaseReadWriteTransaction *)transaction
{
OWSAssert(envelope);
OWSAssert(receiptMessage);
OWSAssert(transaction);
PBArray *messageTimestamps = receiptMessage.timestamp;
NSMutableArray<NSNumber *> *sentTimestamps = [NSMutableArray new];
for (int i = 0; i < messageTimestamps.count; i++) {
UInt64 timestamp = [messageTimestamps uint64AtIndex:i];
[sentTimestamps addObject:@(timestamp)];
}
switch (receiptMessage.type) {
case OWSSignalServiceProtosReceiptMessageTypeDelivery:
DDLogVerbose(@"%@ Processing receipt message with delivery receipts.", self.logTag);
[self processDeliveryReceiptsFromRecipientId:envelope.source
sentTimestamps:sentTimestamps
deliveryTimestamp:@(envelope.timestamp)
transaction:transaction];
return;
case OWSSignalServiceProtosReceiptMessageTypeRead:
DDLogVerbose(@"%@ Processing receipt message with read receipts.", self.logTag);
[OWSReadReceiptManager.sharedManager processReadReceiptsFromRecipientId:envelope.source
sentTimestamps:sentTimestamps
readTimestamp:envelope.timestamp];
break;
default:
DDLogInfo(@"%@ Ignoring receipt message of unknown type: %d.", self.logTag, (int)receiptMessage.type);
return;
}
}
- (void)handleIncomingEnvelope:(OWSSignalServiceProtosEnvelope *)envelope
withCallMessage:(OWSSignalServiceProtosCallMessage *)callMessage
{
OWSAssert(envelope);
OWSAssert(callMessage);
if ([callMessage hasProfileKey]) {
NSData *profileKey = [callMessage profileKey];
NSString *recipientId = envelope.source;
[self.profileManager setProfileKeyData:profileKey forRecipientId:recipientId];
}
// By dispatching async, we introduce the possibility that these messages might be lost
// if the app exits before this block is executed. This is fine, since the call by
// definition will end if the app exits.
dispatch_async(dispatch_get_main_queue(), ^{
if (callMessage.hasOffer) {
[self.callMessageHandler receivedOffer:callMessage.offer fromCallerId:envelope.source];
} else if (callMessage.hasAnswer) {
[self.callMessageHandler receivedAnswer:callMessage.answer fromCallerId:envelope.source];
} else if (callMessage.iceUpdate.count > 0) {
for (OWSSignalServiceProtosCallMessageIceUpdate *iceUpdate in callMessage.iceUpdate) {
[self.callMessageHandler receivedIceUpdate:iceUpdate fromCallerId:envelope.source];
}
} else if (callMessage.hasHangup) {
DDLogVerbose(@"%@ Received CallMessage with Hangup.", self.logTag);
[self.callMessageHandler receivedHangup:callMessage.hangup fromCallerId:envelope.source];
} else if (callMessage.hasBusy) {
[self.callMessageHandler receivedBusy:callMessage.busy fromCallerId:envelope.source];
} else {
OWSProdInfoWEnvelope([OWSAnalyticsEvents messageManagerErrorCallMessageNoActionablePayload], envelope);
}
});
}
- (void)handleReceivedGroupAvatarUpdateWithEnvelope:(OWSSignalServiceProtosEnvelope *)envelope
dataMessage:(OWSSignalServiceProtosDataMessage *)dataMessage
transaction:(YapDatabaseReadWriteTransaction *)transaction
{
OWSAssert(envelope);
OWSAssert(dataMessage);
OWSAssert(transaction);
TSGroupThread *_Nullable groupThread =
[TSGroupThread threadWithGroupId:dataMessage.group.id transaction:transaction];
if (!groupThread) {
OWSFail(@"%@ Missing group for group avatar update", self.logTag);
return;
}
OWSAssert(groupThread);
OWSAttachmentsProcessor *attachmentsProcessor =
[[OWSAttachmentsProcessor alloc] initWithAttachmentProtos:@[ dataMessage.group.avatar ]
timestamp:envelope.timestamp
relay:envelope.relay
thread:groupThread
networkManager:self.networkManager
storageManager:self.storageManager
transaction:transaction];
if (!attachmentsProcessor.hasSupportedAttachments) {
DDLogWarn(@"%@ received unsupported group avatar envelope", self.logTag);
return;
}
[attachmentsProcessor fetchAttachmentsForMessage:nil
transaction:transaction
success:^(TSAttachmentStream *attachmentStream) {
[groupThread updateAvatarWithAttachmentStream:attachmentStream];
}
failure:^(NSError *error) {
DDLogError(@"%@ failed to fetch attachments for group avatar sent at: %llu. with error: %@",
self.logTag,
envelope.timestamp,
error);
}];
}
- (void)handleReceivedMediaWithEnvelope:(OWSSignalServiceProtosEnvelope *)envelope
dataMessage:(OWSSignalServiceProtosDataMessage *)dataMessage
transaction:(YapDatabaseReadWriteTransaction *)transaction
{
OWSAssert(envelope);
OWSAssert(dataMessage);
OWSAssert(transaction);
TSThread *_Nullable thread = [self threadForEnvelope:envelope dataMessage:dataMessage transaction:transaction];
if (!thread) {
OWSFail(@"%@ ignoring media message for unknown group.", self.logTag);
return;
}
OWSAttachmentsProcessor *attachmentsProcessor =
[[OWSAttachmentsProcessor alloc] initWithAttachmentProtos:dataMessage.attachments
timestamp:envelope.timestamp
relay:envelope.relay
thread:thread
networkManager:self.networkManager
storageManager:self.storageManager
transaction:transaction];
if (!attachmentsProcessor.hasSupportedAttachments) {
DDLogWarn(@"%@ received unsupported media envelope", self.logTag);
return;
}
TSIncomingMessage *_Nullable createdMessage =
[self handleReceivedEnvelope:envelope
withDataMessage:dataMessage
attachmentIds:attachmentsProcessor.supportedAttachmentIds
transaction:transaction];
if (!createdMessage) {
return;
}
DDLogDebug(@"%@ incoming attachment message: %@", self.logTag, createdMessage.debugDescription);
[attachmentsProcessor fetchAttachmentsForMessage:createdMessage
transaction:transaction
success:^(TSAttachmentStream *attachmentStream) {
DDLogDebug(@"%@ successfully fetched attachment: %@ for message: %@",
self.logTag,
attachmentStream,
createdMessage);
}
failure:^(NSError *error) {
DDLogError(
@"%@ failed to fetch attachments for message: %@ with error: %@", self.logTag, createdMessage, error);
}];
}
- (void)handleIncomingEnvelope:(OWSSignalServiceProtosEnvelope *)envelope
withSyncMessage:(OWSSignalServiceProtosSyncMessage *)syncMessage
transaction:(YapDatabaseReadWriteTransaction *)transaction
{
OWSAssert(envelope);
OWSAssert(syncMessage);
OWSAssert(transaction);
OWSAssert([TSAccountManager isRegistered]);
NSString *localNumber = [TSAccountManager localNumber];
if (![localNumber isEqualToString:envelope.source]) {
// Sync messages should only come from linked devices.
OWSProdErrorWEnvelope([OWSAnalyticsEvents messageManagerErrorSyncMessageFromUnknownSource], envelope);
return;
}
if (syncMessage.hasSent) {
OWSIncomingSentMessageTranscript *transcript =
[[OWSIncomingSentMessageTranscript alloc] initWithProto:syncMessage.sent relay:envelope.relay];
OWSRecordTranscriptJob *recordJob =
[[OWSRecordTranscriptJob alloc] initWithIncomingSentMessageTranscript:transcript];
OWSSignalServiceProtosDataMessage *dataMessage = syncMessage.sent.message;
OWSAssert(dataMessage);
NSString *destination = syncMessage.sent.destination;
if (dataMessage && destination.length > 0 && dataMessage.hasProfileKey) {
// If we observe a linked device sending our profile key to another
// user, we can infer that that user belongs in our profile whitelist.
if (dataMessage.hasGroup) {
[self.profileManager addGroupIdToProfileWhitelist:dataMessage.group.id];
} else {
[self.profileManager addUserToProfileWhitelist:destination];
}
}
if ([self isDataMessageGroupAvatarUpdate:syncMessage.sent.message]) {
[recordJob runWithAttachmentHandler:^(TSAttachmentStream *attachmentStream) {
[self.dbConnection readWriteWithBlock:^(YapDatabaseReadWriteTransaction *transaction) {
TSGroupThread *_Nullable groupThread =
[TSGroupThread threadWithGroupId:dataMessage.group.id transaction:transaction];
if (!groupThread) {
OWSFail(@"%@ ignoring sync group avatar update for unknown group.", self.logTag);
return;
}
[groupThread updateAvatarWithAttachmentStream:attachmentStream transaction:transaction];
}];
}
transaction:transaction];
} else {
[recordJob runWithAttachmentHandler:^(TSAttachmentStream *attachmentStream) {
DDLogDebug(@"%@ successfully fetched transcript attachment: %@", self.logTag, attachmentStream);
}
transaction:transaction];
}
} else if (syncMessage.hasRequest) {
if (syncMessage.request.type == OWSSignalServiceProtosSyncMessageRequestTypeContacts) {
// We respond asynchronously because populating the sync message will
// create transactions and it's not practical (due to locking in the OWSIdentityManager)
// to plumb our transaction through.
//
// In rare cases this means we won't respond to the sync request, but that's
// acceptable.
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
OWSSyncContactsMessage *syncContactsMessage =
[[OWSSyncContactsMessage alloc] initWithSignalAccounts:self.contactsManager.signalAccounts
identityManager:self.identityManager
profileManager:self.profileManager];
DataSource *dataSource =
[DataSourceValue dataSourceWithSyncMessage:[syncContactsMessage buildPlainTextAttachmentData]];
[self.messageSender enqueueTemporaryAttachment:dataSource
contentType:OWSMimeTypeApplicationOctetStream
inMessage:syncContactsMessage
success:^{
DDLogInfo(@"%@ Successfully sent Contacts response syncMessage.", self.logTag);
}
failure:^(NSError *error) {
DDLogError(
@"%@ Failed to send Contacts response syncMessage with error: %@", self.logTag, error);
}];
});
} else if (syncMessage.request.type == OWSSignalServiceProtosSyncMessageRequestTypeGroups) {
OWSSyncGroupsMessage *syncGroupsMessage = [[OWSSyncGroupsMessage alloc] init];
DataSource *dataSource = [DataSourceValue
dataSourceWithSyncMessage:[syncGroupsMessage buildPlainTextAttachmentDataWithTransaction:transaction]];
[self.messageSender enqueueTemporaryAttachment:dataSource
contentType:OWSMimeTypeApplicationOctetStream
inMessage:syncGroupsMessage
success:^{
DDLogInfo(@"%@ Successfully sent Groups response syncMessage.", self.logTag);
}
failure:^(NSError *error) {
DDLogError(@"%@ Failed to send Groups response syncMessage with error: %@", self.logTag, error);
}];
} else if (syncMessage.request.type == OWSSignalServiceProtosSyncMessageRequestTypeBlocked) {
DDLogInfo(@"%@ Received request for block list", self.logTag);
[_blockingManager syncBlockedPhoneNumbers];
} else if (syncMessage.request.type == OWSSignalServiceProtosSyncMessageRequestTypeConfiguration) {
BOOL areReadReceiptsEnabled =
[[OWSReadReceiptManager sharedManager] areReadReceiptsEnabledWithTransaction:transaction];
OWSSyncConfigurationMessage *syncConfigurationMessage =
[[OWSSyncConfigurationMessage alloc] initWithReadReceiptsEnabled:areReadReceiptsEnabled];
[self.messageSender enqueueMessage:syncConfigurationMessage
success:^{
DDLogInfo(@"%@ Successfully sent Configuration response syncMessage.", self.logTag);
}
failure:^(NSError *error) {
DDLogError(
@"%@ Failed to send Configuration response syncMessage with error: %@", self.logTag, error);
}];
} else {
DDLogWarn(@"%@ ignoring unsupported sync request message", self.logTag);
}
} else if (syncMessage.hasBlocked) {
NSArray<NSString *> *blockedPhoneNumbers = [syncMessage.blocked.numbers copy];
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
[_blockingManager setBlockedPhoneNumbers:blockedPhoneNumbers sendSyncMessage:NO];
});
} else if (syncMessage.read.count > 0) {
DDLogInfo(@"%@ Received %ld read receipt(s)", self.logTag, (u_long)syncMessage.read.count);
[OWSReadReceiptManager.sharedManager processReadReceiptsFromLinkedDevice:syncMessage.read
transaction:transaction];
} else if (syncMessage.hasVerified) {
DDLogInfo(@"%@ Received verification state for %@", self.logTag, syncMessage.verified.destination);
[self.identityManager processIncomingSyncMessage:syncMessage.verified transaction:transaction];
} else {
DDLogWarn(@"%@ Ignoring unsupported sync message.", self.logTag);
}
}
- (void)handleEndSessionMessageWithEnvelope:(OWSSignalServiceProtosEnvelope *)envelope
dataMessage:(OWSSignalServiceProtosDataMessage *)dataMessage
transaction:(YapDatabaseReadWriteTransaction *)transaction
{
OWSAssert(envelope);
OWSAssert(dataMessage);
OWSAssert(transaction);
TSContactThread *thread = [TSContactThread getOrCreateThreadWithContactId:envelope.source transaction:transaction];
[[[TSInfoMessage alloc] initWithTimestamp:envelope.timestamp
inThread:thread
messageType:TSInfoMessageTypeSessionDidEnd] saveWithTransaction:transaction];
[self.storageManager deleteAllSessionsForContact:envelope.source protocolContext:transaction];
}
- (void)handleExpirationTimerUpdateMessageWithEnvelope:(OWSSignalServiceProtosEnvelope *)envelope
dataMessage:(OWSSignalServiceProtosDataMessage *)dataMessage
transaction:(YapDatabaseReadWriteTransaction *)transaction
{
OWSAssert(envelope);
OWSAssert(dataMessage);
OWSAssert(transaction);
TSThread *_Nullable thread = [self threadForEnvelope:envelope dataMessage:dataMessage transaction:transaction];
if (!thread) {
OWSFail(@"%@ ignoring expiring messages update for unknown group.", self.logTag);
return;
}
OWSDisappearingMessagesConfiguration *disappearingMessagesConfiguration;
if (dataMessage.hasExpireTimer && dataMessage.expireTimer > 0) {
DDLogInfo(@"%@ Expiring messages duration turned to %u for thread %@",
self.logTag,
(unsigned int)dataMessage.expireTimer,
thread);
disappearingMessagesConfiguration =
[[OWSDisappearingMessagesConfiguration alloc] initWithThreadId:thread.uniqueId
enabled:YES
durationSeconds:dataMessage.expireTimer];
} else {
DDLogInfo(@"%@ Expiring messages have been turned off for thread %@", self.logTag, thread);
disappearingMessagesConfiguration = [[OWSDisappearingMessagesConfiguration alloc]
initWithThreadId:thread.uniqueId
enabled:NO
durationSeconds:OWSDisappearingMessagesConfigurationDefaultExpirationDuration];
}
OWSAssert(disappearingMessagesConfiguration);
[disappearingMessagesConfiguration saveWithTransaction:transaction];
NSString *name = [self.contactsManager displayNameForPhoneIdentifier:envelope.source];
OWSDisappearingConfigurationUpdateInfoMessage *message =
[[OWSDisappearingConfigurationUpdateInfoMessage alloc] initWithTimestamp:envelope.timestamp
thread:thread
configuration:disappearingMessagesConfiguration
createdByRemoteName:name];
[message saveWithTransaction:transaction];
}
- (void)handleProfileKeyMessageWithEnvelope:(OWSSignalServiceProtosEnvelope *)envelope
dataMessage:(OWSSignalServiceProtosDataMessage *)dataMessage
{
OWSAssert(envelope);
OWSAssert(dataMessage);
NSString *recipientId = envelope.source;
if (!dataMessage.hasProfileKey) {
OWSFail(
@"%@ received profile key message without profile key from: %@", self.logTag, envelopeAddress(envelope));
return;
}
NSData *profileKey = dataMessage.profileKey;
if (profileKey.length != kAES256_KeyByteLength) {
OWSFail(@"%@ received profile key of unexpected length:%lu from:%@",
self.logTag,
(unsigned long)profileKey.length,
envelopeAddress(envelope));
return;
}
id<ProfileManagerProtocol> profileManager = [TextSecureKitEnv sharedEnv].profileManager;
[profileManager setProfileKeyData:profileKey forRecipientId:recipientId];
}
- (void)handleReceivedTextMessageWithEnvelope:(OWSSignalServiceProtosEnvelope *)envelope
dataMessage:(OWSSignalServiceProtosDataMessage *)dataMessage
transaction:(YapDatabaseReadWriteTransaction *)transaction
{
OWSAssert(envelope);
OWSAssert(dataMessage);
OWSAssert(transaction);
[self handleReceivedEnvelope:envelope withDataMessage:dataMessage attachmentIds:@[] transaction:transaction];
}
- (void)sendGroupUpdateForThread:(TSGroupThread *)gThread message:(TSOutgoingMessage *)message
{
OWSAssert(gThread);
OWSAssert(gThread.groupModel);
OWSAssert(message);
if (gThread.groupModel.groupImage) {
NSData *data = UIImagePNGRepresentation(gThread.groupModel.groupImage);
DataSource *_Nullable dataSource = [DataSourceValue dataSourceWithData:data fileExtension:@"png"];
[self.messageSender enqueueAttachment:dataSource
contentType:OWSMimeTypeImagePng
sourceFilename:nil
inMessage:message
success:^{
DDLogDebug(@"%@ Successfully sent group update with avatar", self.logTag);
}
failure:^(NSError *error) {
DDLogError(@"%@ Failed to send group avatar update with error: %@", self.logTag, error);
}];
} else {
[self.messageSender enqueueMessage:message
success:^{
DDLogDebug(@"%@ Successfully sent group update", self.logTag);
}
failure:^(NSError *error) {
DDLogError(@"%@ Failed to send group update with error: %@", self.logTag, error);
}];
}
}
- (void)handleGroupInfoRequest:(OWSSignalServiceProtosEnvelope *)envelope
dataMessage:(OWSSignalServiceProtosDataMessage *)dataMessage
transaction:(YapDatabaseReadWriteTransaction *)transaction
{
OWSAssert(envelope);
OWSAssert(dataMessage);
OWSAssert(transaction);
OWSAssert(dataMessage.group.type == OWSSignalServiceProtosGroupContextTypeRequestInfo);
NSData *groupId = dataMessage.hasGroup ? dataMessage.group.id : nil;
if (!groupId) {
OWSFail(@"Group info request is missing group id.");
return;
}
DDLogWarn(
@"%@ Received 'Request Group Info' message for group: %@ from: %@", self.logTag, groupId, envelope.source);
TSGroupThread *_Nullable gThread = [TSGroupThread threadWithGroupId:dataMessage.group.id transaction:transaction];
if (!gThread) {
DDLogWarn(@"%@ Unknown group: %@", self.logTag, groupId);
return;
}
// Ensure sender is in the group.
if (![gThread.groupModel.groupMemberIds containsObject:envelope.source]) {
DDLogWarn(@"%@ Ignoring 'Request Group Info' message for non-member of group. %@ not in %@",
self.logTag,
envelope.source,
gThread.groupModel.groupMemberIds);
return;
}
// Ensure we are in the group.
OWSAssert([TSAccountManager isRegistered]);
NSString *localNumber = [TSAccountManager localNumber];
if (![gThread.groupModel.groupMemberIds containsObject:localNumber]) {
DDLogWarn(@"%@ Ignoring 'Request Group Info' message for group we no longer belong to.", self.logTag);
return;
}
NSString *updateGroupInfo =
[gThread.groupModel getInfoStringAboutUpdateTo:gThread.groupModel contactsManager:self.contactsManager];
TSOutgoingMessage *message = [[TSOutgoingMessage alloc] initWithTimestamp:[NSDate ows_millisecondTimeStamp]
inThread:gThread
groupMetaMessage:TSGroupMessageUpdate];
[message updateWithCustomMessage:updateGroupInfo transaction:transaction];
// Only send this group update to the requester.
[message updateWithSingleGroupRecipient:envelope.source transaction:transaction];
[self sendGroupUpdateForThread:gThread message:message];
}
- (TSIncomingMessage *_Nullable)handleReceivedEnvelope:(OWSSignalServiceProtosEnvelope *)envelope
withDataMessage:(OWSSignalServiceProtosDataMessage *)dataMessage
attachmentIds:(NSArray<NSString *> *)attachmentIds
transaction:(YapDatabaseReadWriteTransaction *)transaction
{
OWSAssert(envelope);
OWSAssert(dataMessage);
OWSAssert(transaction);
uint64_t timestamp = envelope.timestamp;
NSString *body = dataMessage.body;
NSData *groupId = dataMessage.hasGroup ? dataMessage.group.id : nil;
if (dataMessage.group.type == OWSSignalServiceProtosGroupContextTypeRequestInfo) {
[self handleGroupInfoRequest:envelope dataMessage:dataMessage transaction:transaction];
return nil;
}
if (groupId.length > 0) {
NSMutableSet *newMemberIds = [NSMutableSet setWithArray:dataMessage.group.members];
// Group messages create the group if it doesn't already exist.
//
// We distinguish between the old group state (if any) and the new group state.
TSGroupThread *_Nullable oldGroupThread = [TSGroupThread threadWithGroupId:groupId transaction:transaction];
if (oldGroupThread) {
// Don't trust other clients; ensure all known group members remain in the
// group unless it is a "quit" message in which case we should only remove
// the quiting member below.
[newMemberIds addObjectsFromArray:oldGroupThread.groupModel.groupMemberIds];
}
switch (dataMessage.group.type) {
case OWSSignalServiceProtosGroupContextTypeUpdate: {
// Ensures that the thread exists but doesn't update it.
TSGroupThread *newGroupThread =
[TSGroupThread getOrCreateThreadWithGroupId:groupId transaction:transaction];
TSGroupModel *newGroupModel = [[TSGroupModel alloc] initWithTitle:dataMessage.group.name
memberIds:[newMemberIds.allObjects mutableCopy]
image:oldGroupThread.groupModel.groupImage
groupId:dataMessage.group.id];
NSString *updateGroupInfo = [newGroupThread.groupModel getInfoStringAboutUpdateTo:newGroupModel
contactsManager:self.contactsManager];
newGroupThread.groupModel = newGroupModel;
[newGroupThread saveWithTransaction:transaction];
[[[TSInfoMessage alloc] initWithTimestamp:timestamp
inThread:newGroupThread
messageType:TSInfoMessageTypeGroupUpdate
customMessage:updateGroupInfo] saveWithTransaction:transaction];
return nil;
}
case OWSSignalServiceProtosGroupContextTypeQuit: {
if (!oldGroupThread) {
DDLogInfo(@"%@ ignoring quit group message from unknown group.", self.logTag);
return nil;
}
[newMemberIds removeObject:envelope.source];
oldGroupThread.groupModel.groupMemberIds = [newMemberIds.allObjects mutableCopy];
[oldGroupThread saveWithTransaction:transaction];
NSString *nameString = [self.contactsManager displayNameForPhoneIdentifier:envelope.source];
NSString *updateGroupInfo =
[NSString stringWithFormat:NSLocalizedString(@"GROUP_MEMBER_LEFT", @""), nameString];
[[[TSInfoMessage alloc] initWithTimestamp:timestamp
inThread:oldGroupThread
messageType:TSInfoMessageTypeGroupUpdate
customMessage:updateGroupInfo] saveWithTransaction:transaction];
return nil;
}
case OWSSignalServiceProtosGroupContextTypeDeliver: {
if (!oldGroupThread) {
OWSFail(@"%@ ignoring deliver group message from unknown group.", self.logTag);
return nil;
}
if (body.length == 0 && attachmentIds.count < 1) {
DDLogWarn(@"%@ ignoring empty incoming message from: %@ for group: %@ with timestamp: %lu",
self.logTag,
envelopeAddress(envelope),
groupId,
(unsigned long)timestamp);
return nil;
}
DDLogDebug(@"%@ incoming message from: %@ for group: %@ with timestamp: %lu",
self.logTag,
envelopeAddress(envelope),
groupId,
(unsigned long)timestamp);
TSIncomingMessage *incomingMessage =
[[TSIncomingMessage alloc] initWithTimestamp:timestamp
inThread:oldGroupThread
authorId:envelope.source
sourceDeviceId:envelope.sourceDevice
messageBody:body
attachmentIds:attachmentIds
expiresInSeconds:dataMessage.expireTimer];
[self finalizeIncomingMessage:incomingMessage
thread:oldGroupThread
envelope:envelope
dataMessage:dataMessage
attachmentIds:attachmentIds
transaction:transaction];
return incomingMessage;
}
default: {
DDLogWarn(@"%@ Ignoring unknown group message type: %d", self.logTag, (int)dataMessage.group.type);
return nil;
}
}
} else {
if (body.length == 0 && attachmentIds.count < 1) {
DDLogWarn(@"%@ ignoring empty incoming message from: %@ with timestamp: %lu",
self.logTag,
envelopeAddress(envelope),
(unsigned long)timestamp);
return nil;
}
DDLogDebug(@"%@ incoming message from: %@ with timestamp: %lu",
self.logTag,
envelopeAddress(envelope),
(unsigned long)timestamp);
TSContactThread *thread = [TSContactThread getOrCreateThreadWithContactId:envelope.source
transaction:transaction
relay:envelope.relay];
TSIncomingMessage *incomingMessage = [[TSIncomingMessage alloc] initWithTimestamp:timestamp
inThread:thread
authorId:[thread contactIdentifier]
sourceDeviceId:envelope.sourceDevice
messageBody:body
attachmentIds:attachmentIds
expiresInSeconds:dataMessage.expireTimer];
[self finalizeIncomingMessage:incomingMessage
thread:thread
envelope:envelope
dataMessage:dataMessage
attachmentIds:attachmentIds
transaction:transaction];
return incomingMessage;
}
}
- (void)finalizeIncomingMessage:(TSIncomingMessage *)incomingMessage
thread:(TSThread *)thread
envelope:(OWSSignalServiceProtosEnvelope *)envelope
dataMessage:(OWSSignalServiceProtosDataMessage *)dataMessage
attachmentIds:(NSArray<NSString *> *)attachmentIds
transaction:(YapDatabaseReadWriteTransaction *)transaction
{
OWSAssert(thread);
OWSAssert(incomingMessage);
OWSAssert(envelope);
OWSAssert(dataMessage);
OWSAssert(attachmentIds);
OWSAssert(transaction);
OWSAssert([TSAccountManager isRegistered]);
NSString *localNumber = [TSAccountManager localNumber];
NSString *body = dataMessage.body;
uint64_t timestamp = envelope.timestamp;
if (!thread) {
OWSFail(@"%@ Can't finalize without thread", self.logTag);
return;
}
if (!incomingMessage) {
OWSFail(@"%@ Can't finalize missing message", self.logTag);
return;
}
[incomingMessage saveWithTransaction:transaction];
// Any messages sent from the current user - from this device or another - should be
// automatically marked as read.
BOOL shouldMarkMessageAsRead = [envelope.source isEqualToString:localNumber];
if (shouldMarkMessageAsRead) {
// Don't send a read receipt for messages sent by ourselves.
[incomingMessage markAsReadWithTransaction:transaction sendReadReceipt:NO updateExpiration:YES];
}
DDLogDebug(@"%@ shouldMarkMessageAsRead: %d (%@)", self.logTag, shouldMarkMessageAsRead, envelope.source);
// In case we already have a read receipt for this new message (this happens sometimes).
[OWSReadReceiptManager.sharedManager applyEarlyReadReceiptsForIncomingMessage:incomingMessage
transaction:transaction];
[OWSDisappearingMessagesJob becomeConsistentWithConfigurationForMessage:incomingMessage
contactsManager:self.contactsManager];
// Update thread preview in inbox
[thread touchWithTransaction:transaction];
[[TextSecureKitEnv sharedEnv].notificationsManager notifyUserForIncomingMessage:incomingMessage
inThread:thread
contactsManager:self.contactsManager
transaction:transaction];
}
#pragma mark - helpers
- (BOOL)isDataMessageGroupAvatarUpdate:(OWSSignalServiceProtosDataMessage *)dataMessage
{
return dataMessage.hasGroup && dataMessage.group.type == OWSSignalServiceProtosGroupContextTypeUpdate
&& dataMessage.group.hasAvatar;
}
/**
* @returns
* Group or Contact thread for message, creating a new contact thread if necessary,
* but never creating a new group thread.
*/
- (nullable TSThread *)threadForEnvelope:(OWSSignalServiceProtosEnvelope *)envelope
dataMessage:(OWSSignalServiceProtosDataMessage *)dataMessage
transaction:(YapDatabaseReadWriteTransaction *)transaction
{
OWSAssert(envelope);
OWSAssert(dataMessage);
OWSAssert(transaction);
if (dataMessage.hasGroup) {
NSData *groupId = dataMessage.group.id;
OWSAssert(groupId.length > 0);
TSGroupThread *_Nullable groupThread = [TSGroupThread threadWithGroupId:groupId transaction:transaction];
// This method should only be called from a code path that has already verified
// that this is a "known" group.
OWSAssert(groupThread);
return groupThread;
} else {
return [TSContactThread getOrCreateThreadWithContactId:envelope.source transaction:transaction];
}
}
@end
NS_ASSUME_NONNULL_END
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