40 lines
1.3 KiB
Swift
40 lines
1.3 KiB
Swift
import SessionProtocolKit
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import SessionUtilitiesKit
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@objc(SNNullMessage)
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public final class NullMessage : ControlMessage {
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// MARK: Initialization
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public override init() { super.init() }
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// MARK: Coding
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public required init?(coder: NSCoder) {
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super.init(coder: coder)
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}
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public override func encode(with coder: NSCoder) {
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super.encode(with: coder)
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}
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// MARK: Proto Conversion
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public override class func fromProto(_ proto: SNProtoContent) -> NullMessage? {
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guard proto.nullMessage != nil else { return nil }
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return NullMessage()
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}
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public override func toProto(using transaction: YapDatabaseReadWriteTransaction) -> SNProtoContent? {
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let nullMessageProto = SNProtoNullMessage.builder()
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let paddingSize = UInt.random(in: 0..<512) // random(in:) uses the system's default random generator, which is cryptographically secure
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let padding = Data.getSecureRandomData(ofSize: paddingSize)!
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nullMessageProto.setPadding(padding)
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let contentProto = SNProtoContent.builder()
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do {
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contentProto.setNullMessage(try nullMessageProto.build())
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return try contentProto.build()
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} catch {
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SNLog("Couldn't construct null message proto from: \(self).")
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return nil
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}
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}
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}
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