session-ios/SignalServiceKit/src/Devices/OWSContactsOutputStream.m

//
//  Copyright (c) 2017 Open Whisper Systems. All rights reserved.
//

#import "OWSContactsOutputStream.h"
#import "Contact.h"
#import "Cryptography.h"
#import "MIMETypeUtil.h"
#import "NSData+keyVersionByte.h"
#import "OWSRecipientIdentity.h"
#import "OWSSignalServiceProtos.pb.h"
#import "SignalAccount.h"
#import <ProtocolBuffers/CodedOutputStream.h>

NS_ASSUME_NONNULL_BEGIN

@implementation OWSContactsOutputStream

- (void)writeSignalAccount:(SignalAccount *)signalAccount
         recipientIdentity:(nullable OWSRecipientIdentity *)recipientIdentity
            profileKeyData:(nullable NSData *)profileKeyData
{
    OWSAssert(signalAccount);
    OWSAssert(signalAccount.contact);

    OWSSignalServiceProtosContactDetailsBuilder *contactBuilder = [OWSSignalServiceProtosContactDetailsBuilder new];
    [contactBuilder setName:signalAccount.contact.fullName];
    [contactBuilder setNumber:signalAccount.recipientId];

    if (recipientIdentity != nil) {
        OWSSignalServiceProtosVerifiedBuilder *verifiedBuilder = [OWSSignalServiceProtosVerifiedBuilder new];
        verifiedBuilder.destination = recipientIdentity.recipientId;
        verifiedBuilder.identityKey = [recipientIdentity.identityKey prependKeyType];
        verifiedBuilder.state = OWSVerificationStateToProtoState(recipientIdentity.verificationState);
        contactBuilder.verifiedBuilder = verifiedBuilder;
    }

    NSData *avatarPng;
    if (signalAccount.contact.image) {
        OWSSignalServiceProtosContactDetailsAvatarBuilder *avatarBuilder =
            [OWSSignalServiceProtosContactDetailsAvatarBuilder new];

        [avatarBuilder setContentType:OWSMimeTypeImagePng];
        avatarPng = UIImagePNGRepresentation(signalAccount.contact.image);
        [avatarBuilder setLength:(uint32_t)avatarPng.length];
        [contactBuilder setAvatarBuilder:avatarBuilder];
    }

    if (profileKeyData) {
        OWSAssert(profileKeyData.length == kAES256_KeyByteLength);
        [contactBuilder setProfileKey:profileKeyData];
    }

    NSData *contactData = [[contactBuilder build] data];

    uint32_t contactDataLength = (uint32_t)contactData.length;
    [self.delegateStream writeRawVarint32:contactDataLength];
    [self.delegateStream writeRawData:contactData];

    if (signalAccount.contact.image) {
        [self.delegateStream writeRawData:avatarPng];
    }
}

@end

NS_ASSUME_NONNULL_END
Use SignalAccount class to sync contacts. // FREEBIE 8 years ago			`//`
			`// Copyright (c) 2017 Open Whisper Systems. All rights reserved.`
			`//`
Build contact/group exports with data streams Ideally we'd be using file streams so we wouldn't have to load it all into ram but none of the attachment uploading infrastructure takes streams (yet!) // FREEBIE 9 years ago
			`#import "OWSContactsOutputStream.h"`
			`#import "Contact.h"`
Assert profile key length on sending/receiving // FREEBIE 8 years ago			`#import "Cryptography.h"`
extract constant for image/png // FREEBIE 9 years ago			`#import "MIMETypeUtil.h"`
transmit key version byte // FREEBIE 8 years ago			`#import "NSData+keyVersionByte.h"`
			`#import "OWSRecipientIdentity.h"`
Build contact/group exports with data streams Ideally we'd be using file streams so we wouldn't have to load it all into ram but none of the attachment uploading infrastructure takes streams (yet!) // FREEBIE 9 years ago			`#import "OWSSignalServiceProtos.pb.h"`
Use SignalAccount class to sync contacts. // FREEBIE 8 years ago			`#import "SignalAccount.h"`
Build contact/group exports with data streams Ideally we'd be using file streams so we wouldn't have to load it all into ram but none of the attachment uploading infrastructure takes streams (yet!) // FREEBIE 9 years ago			`#import <ProtocolBuffers/CodedOutputStream.h>`

			`NS_ASSUME_NONNULL_BEGIN`

			`@implementation OWSContactsOutputStream`

Use SignalAccount class to sync contacts. // FREEBIE 8 years ago			`- (void)writeSignalAccount:(SignalAccount *)signalAccount`
don't sync verified state when we have never recorded the recipients identity e.g. every contact you have which is a signal user whom you've never messaged will not have a recorded RecipientIdentity // FREEBIE 8 years ago			`recipientIdentity:(nullable OWSRecipientIdentity *)recipientIdentity`
Send any profile key in contact sync // FREEBIE 8 years ago			`profileKeyData:(nullable NSData *)profileKeyData`
Build contact/group exports with data streams Ideally we'd be using file streams so we wouldn't have to load it all into ram but none of the attachment uploading infrastructure takes streams (yet!) // FREEBIE 9 years ago			`{`
Use SignalAccount class to sync contacts. // FREEBIE 8 years ago			`OWSAssert(signalAccount);`
			`OWSAssert(signalAccount.contact);`
sync all verification states with contact sync // FREEBIE 8 years ago
Build contact/group exports with data streams Ideally we'd be using file streams so we wouldn't have to load it all into ram but none of the attachment uploading infrastructure takes streams (yet!) // FREEBIE 9 years ago			`OWSSignalServiceProtosContactDetailsBuilder *contactBuilder = [OWSSignalServiceProtosContactDetailsBuilder new];`
Use SignalAccount class to sync contacts. // FREEBIE 8 years ago			`[contactBuilder setName:signalAccount.contact.fullName];`
			`[contactBuilder setNumber:signalAccount.recipientId];`
sync all verification states with contact sync // FREEBIE 8 years ago
don't sync verified state when we have never recorded the recipients identity e.g. every contact you have which is a signal user whom you've never messaged will not have a recorded RecipientIdentity // FREEBIE 8 years ago			`if (recipientIdentity != nil) {`
			`OWSSignalServiceProtosVerifiedBuilder *verifiedBuilder = [OWSSignalServiceProtosVerifiedBuilder new];`
			`verifiedBuilder.destination = recipientIdentity.recipientId;`
transmit key version byte // FREEBIE 8 years ago			`verifiedBuilder.identityKey = [recipientIdentity.identityKey prependKeyType];`
don't sync verified state when we have never recorded the recipients identity e.g. every contact you have which is a signal user whom you've never messaged will not have a recorded RecipientIdentity // FREEBIE 8 years ago			`verifiedBuilder.state = OWSVerificationStateToProtoState(recipientIdentity.verificationState);`
			`contactBuilder.verifiedBuilder = verifiedBuilder;`
			`}`
sync all verification states with contact sync // FREEBIE 8 years ago
Build contact/group exports with data streams Ideally we'd be using file streams so we wouldn't have to load it all into ram but none of the attachment uploading infrastructure takes streams (yet!) // FREEBIE 9 years ago			`NSData *avatarPng;`
Use SignalAccount class to sync contacts. // FREEBIE 8 years ago			`if (signalAccount.contact.image) {`
Build contact/group exports with data streams Ideally we'd be using file streams so we wouldn't have to load it all into ram but none of the attachment uploading infrastructure takes streams (yet!) // FREEBIE 9 years ago			`OWSSignalServiceProtosContactDetailsAvatarBuilder *avatarBuilder =`
			`[OWSSignalServiceProtosContactDetailsAvatarBuilder new];`

extract constant for image/png // FREEBIE 9 years ago			`[avatarBuilder setContentType:OWSMimeTypeImagePng];`
Use SignalAccount class to sync contacts. // FREEBIE 8 years ago			`avatarPng = UIImagePNGRepresentation(signalAccount.contact.image);`
Build contact/group exports with data streams Ideally we'd be using file streams so we wouldn't have to load it all into ram but none of the attachment uploading infrastructure takes streams (yet!) // FREEBIE 9 years ago			`[avatarBuilder setLength:(uint32_t)avatarPng.length];`
			`[contactBuilder setAvatarBuilder:avatarBuilder];`
			`}`

Send any profile key in contact sync // FREEBIE 8 years ago			`if (profileKeyData) {`
fix assert // FREEBIE 8 years ago			`OWSAssert(profileKeyData.length == kAES256_KeyByteLength);`
Send any profile key in contact sync // FREEBIE 8 years ago			`[contactBuilder setProfileKey:profileKeyData];`
			`}`

Build contact/group exports with data streams Ideally we'd be using file streams so we wouldn't have to load it all into ram but none of the attachment uploading infrastructure takes streams (yet!) // FREEBIE 9 years ago			`NSData *contactData = [[contactBuilder build] data];`

			`uint32_t contactDataLength = (uint32_t)contactData.length;`
			`[self.delegateStream writeRawVarint32:contactDataLength];`
			`[self.delegateStream writeRawData:contactData];`

Use SignalAccount class to sync contacts. // FREEBIE 8 years ago			`if (signalAccount.contact.image) {`
Build contact/group exports with data streams Ideally we'd be using file streams so we wouldn't have to load it all into ram but none of the attachment uploading infrastructure takes streams (yet!) // FREEBIE 9 years ago			`[self.delegateStream writeRawData:avatarPng];`
			`}`
			`}`

			`@end`

			`NS_ASSUME_NONNULL_END`