mirror of https://github.com/oxen-io/session-ios
Code generate Swift wrappers for protocol buffers.
Matthew Chen
6 years ago
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//
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// Copyright (c) 2018 Open Whisper Systems. All rights reserved.
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//
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import Foundation
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@objc
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public class SSKEnvelope: NSObject {
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public enum EnvelopeError: Error {
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case invalidProtobuf(description: String)
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}
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@objc
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public enum SSKEnvelopeType: Int32 {
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case unknown = 0
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case ciphertext = 1
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case keyExchange = 2
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case prekeyBundle = 3
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case receipt = 5
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}
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@objc
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public let timestamp: UInt64
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@objc
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public let source: String
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@objc
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public let sourceDevice: UInt32
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@objc
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public let type: SSKEnvelopeType
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@objc
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public let relay: String?
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@objc
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public let content: Data?
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@objc
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public let legacyMessage: Data?
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@objc
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public init(timestamp: UInt64, source: String, sourceDevice: UInt32, type: SSKEnvelopeType, content: Data?, legacyMessage: Data?) {
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self.source = source
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self.type = type
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self.timestamp = timestamp
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self.sourceDevice = sourceDevice
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self.relay = nil
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self.content = content
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self.legacyMessage = legacyMessage
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}
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@objc
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public init(serializedData: Data) throws {
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let proto: SignalServiceProtos_Envelope = try SignalServiceProtos_Envelope(serializedData: serializedData)
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guard proto.hasSource else {
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throw EnvelopeError.invalidProtobuf(description: "missing required field: source")
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}
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self.source = proto.source
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guard proto.hasType else {
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throw EnvelopeError.invalidProtobuf(description: "missing required field: type")
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}
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self.type = {
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switch proto.type {
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case .unknown:
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return .unknown
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case .ciphertext:
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return .ciphertext
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case .keyExchange:
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return .keyExchange
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case .prekeyBundle:
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return .prekeyBundle
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case .receipt:
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return .receipt
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}
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}()
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guard proto.hasTimestamp else {
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throw EnvelopeError.invalidProtobuf(description: "missing required field: timestamp")
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}
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self.timestamp = proto.timestamp
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guard proto.hasSourceDevice else {
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throw EnvelopeError.invalidProtobuf(description: "missing required field: sourceDevice")
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}
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self.sourceDevice = proto.sourceDevice
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if proto.hasContent {
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self.content = proto.content
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} else {
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self.content = nil
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}
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if proto.hasLegacyMessage {
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self.legacyMessage = proto.legacyMessage
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} else {
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self.legacyMessage = nil
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}
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if proto.relay.count > 0 {
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self.relay = proto.relay
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} else {
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relay = nil
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}
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}
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@objc
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public func serializedData() throws -> Data {
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return try self.asProtobuf.serializedData()
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}
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private var asProtobuf: SignalServiceProtos_Envelope {
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let proto = SignalServiceProtos_Envelope.with { (builder) in
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builder.source = self.source
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builder.type = {
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switch self.type {
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case .unknown:
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return .unknown
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case .ciphertext:
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return .ciphertext
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case .keyExchange:
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return .keyExchange
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case .prekeyBundle:
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return .prekeyBundle
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case .receipt:
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return .receipt
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}
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}()
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builder.timestamp = self.timestamp
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builder.sourceDevice = self.sourceDevice
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if let relay = self.relay {
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builder.relay = relay
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}
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if let content = self.content {
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builder.content = content
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}
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}
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return proto
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}
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}
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