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105 lines
3.5 KiB
Objective-C
105 lines
3.5 KiB
Objective-C
//
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// Copyright (c) 2018 Open Whisper Systems. All rights reserved.
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//
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#import "OWSSyncGroupsMessage.h"
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#import "OWSGroupsOutputStream.h"
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#import "TSAttachment.h"
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#import "TSAttachmentStream.h"
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#import "TSContactThread.h"
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#import "TSGroupModel.h"
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#import "TSGroupThread.h"
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#import <SignalCoreKit/NSDate+OWS.h>
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#import <SignalUtilitiesKit/SignalUtilitiesKit-Swift.h>
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#import "OWSPrimaryStorage.h"
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NS_ASSUME_NONNULL_BEGIN
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@interface OWSSyncGroupsMessage ()
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@property (nonatomic, readonly) TSGroupThread *groupThread;
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@end
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@implementation OWSSyncGroupsMessage
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- (instancetype)initWithGroupThread:(TSGroupThread *)thread
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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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_groupThread = thread;
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return self;
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}
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- (nullable instancetype)initWithCoder:(NSCoder *)coder
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{
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return [super initWithCoder:coder];
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}
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- (nullable SSKProtoSyncMessageBuilder *)syncMessageBuilder
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{
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NSError *error;
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if (self.attachmentIds.count > 1) {
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OWSLogError(@"Expected sync group message to have one or zero attachments, but found %lu.", (unsigned long)self.attachmentIds.count);
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}
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SSKProtoSyncMessageGroupsBuilder *groupsBuilder;
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if (self.attachmentIds.count == 0) {
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SSKProtoAttachmentPointerBuilder *attachmentProtoBuilder = [SSKProtoAttachmentPointer builderWithId:0];
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SSKProtoAttachmentPointer *attachmentProto = [attachmentProtoBuilder buildAndReturnError:&error];
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groupsBuilder = [SSKProtoSyncMessageGroups builder];
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[groupsBuilder setBlob:attachmentProto];
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__block NSData *data;
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[OWSPrimaryStorage.sharedManager.dbReadConnection readWithBlock:^(YapDatabaseReadTransaction *transaction) {
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data = [self buildPlainTextAttachmentDataWithTransaction:transaction];
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}];
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[groupsBuilder setData:data];
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} else {
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SSKProtoAttachmentPointer *attachmentProto = [TSAttachmentStream buildProtoForAttachmentId:self.attachmentIds.firstObject];
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if (attachmentProto == nil) {
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OWSFailDebug(@"Couldn't build protobuf.");
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return nil;
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}
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groupsBuilder = [SSKProtoSyncMessageGroups builder];
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[groupsBuilder setBlob:attachmentProto];
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}
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SSKProtoSyncMessageGroups *_Nullable groupsProto = [groupsBuilder buildAndReturnError:&error];
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if (error || !groupsProto) {
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OWSFailDebug(@"Couldn't build protobuf due to error: %@.", error);
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return nil;
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}
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SSKProtoSyncMessageBuilder *syncMessageBuilder = [SSKProtoSyncMessage builder];
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[syncMessageBuilder setGroups:groupsProto];
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return syncMessageBuilder;
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}
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- (nullable NSData *)buildPlainTextAttachmentDataWithTransaction:(YapDatabaseReadTransaction *)transaction
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{
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// TODO use temp file stream to avoid loading everything into memory at once
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// First though, we need to re-engineer our attachment process to accept streams (encrypting with stream,
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// and uploading with streams).
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NSOutputStream *dataOutputStream = [NSOutputStream outputStreamToMemory];
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[dataOutputStream open];
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OWSGroupsOutputStream *groupsOutputStream = [[OWSGroupsOutputStream alloc] initWithOutputStream:dataOutputStream];
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[groupsOutputStream writeGroup:self.groupThread transaction:transaction];
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[dataOutputStream close];
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if (groupsOutputStream.hasError) {
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OWSFailDebug(@"Could not write groups sync stream.");
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return nil;
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}
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return [dataOutputStream propertyForKey:NSStreamDataWrittenToMemoryStreamKey];
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}
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@end
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NS_ASSUME_NONNULL_END
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