/**
 * Copyright (C) 2014-2016 Open Whisper Systems
 *
 * Licensed according to the LICENSE file in this repository.
 */

syntax = "proto2";

package signalservice;

option java_package = "org.session.libsignal.service.internal.push";
option java_outer_classname = "SignalServiceProtos";

message Envelope {
  enum Type {
    UNKNOWN                 = 0;
    CIPHERTEXT              = 1;
    KEY_EXCHANGE            = 2;
    PREKEY_BUNDLE           = 3;
    RECEIPT                 = 5;
    UNIDENTIFIED_SENDER     = 6;
    CLOSED_GROUP_CIPHERTEXT = 7; // Loki
    FALLBACK_MESSAGE        = 101; // Loki - Encrypted using the fallback session cipher. Contains a pre key bundle if it's a session request.
  }

  optional Type   type            = 1;
  optional string source          = 2;
  optional uint32 sourceDevice    = 7;
  optional string relay           = 3;
  optional uint64 timestamp       = 5;
  optional bytes  legacyMessage   = 6; // Contains an encrypted DataMessage
  optional bytes  content         = 8; // Contains an encrypted Content
  optional string serverGuid      = 9;
  optional uint64 serverTimestamp = 10;
}

message Content {
  optional DataMessage          dataMessage           = 1;
  optional SyncMessage          syncMessage           = 2 [deprecated=true];
  optional CallMessage          callMessage           = 3;
  optional NullMessage          nullMessage           = 4;
  optional ReceiptMessage       receiptMessage        = 5;
  optional TypingMessage        typingMessage         = 6;
  optional ConfigurationMessage configurationMessage  = 7;
  optional PreKeyBundleMessage  preKeyBundleMessage   = 101; // Loki
  optional DeviceLinkMessage    deviceLinkMessage     = 103; // Loki
}

message DeviceLinkMessage {
  optional string primaryPublicKey       = 1;
  optional string secondaryPublicKey     = 2;
  optional bytes  requestSignature       = 3;
  optional bytes  authorizationSignature = 4;
}

message PreKeyBundleMessage {
  optional bytes  identityKey = 1;
  optional uint32 deviceId    = 2;
  optional uint32 preKeyId    = 3;
  optional uint32 signedKeyId = 4;
  optional bytes  preKey      = 5;
  optional bytes  signedKey   = 6;
  optional bytes  signature   = 7;
}

message CallMessage {
  message Offer {
    optional uint64 id          = 1;
    optional string description = 2;
  }

  message Answer {
    optional uint64 id          = 1;
    optional string description = 2;
  }

  message IceUpdate {
    optional uint64 id            = 1;
    optional string sdpMid        = 2;
    optional uint32 sdpMLineIndex = 3;
    optional string sdp           = 4;
  }

  message Busy {
    optional uint64 id = 1;
  }

  message Hangup {
    optional uint64 id = 1;
  }

  optional Offer     offer     = 1;
  optional Answer    answer    = 2;
  repeated IceUpdate iceUpdate = 3;
  optional Hangup    hangup    = 4;
  optional Busy      busy      = 5;
}

message ClosedGroupCiphertextMessageWrapper {
  // @required
  optional bytes ciphertext = 1;
  // @required
  optional bytes ephemeralPublicKey = 2;
}

message DataMessage {
  enum Flags {
    END_SESSION                 = 1;
    EXPIRATION_TIMER_UPDATE     = 2;
    PROFILE_KEY_UPDATE          = 4;
    DEVICE_UNLINKING_REQUEST    = 128;
  }

  message Quote {
    message QuotedAttachment {
      optional string            contentType = 1;
      optional string            fileName    = 2;
      optional AttachmentPointer thumbnail   = 3;
    }

    optional uint64           id          = 1;
    optional string           author      = 2;
    optional string           text        = 3;
    repeated QuotedAttachment attachments = 4;
  }

  message Contact {
    message Name {
      optional string givenName   = 1;
      optional string familyName  = 2;
      optional string prefix      = 3;
      optional string suffix      = 4;
      optional string middleName  = 5;
      optional string displayName = 6;
    }

    message Phone {
      enum Type {
        HOME   = 1;
        MOBILE = 2;
        WORK   = 3;
        CUSTOM = 4;
      }

      optional string value = 1;
      optional Type   type  = 2;
      optional string label = 3;
    }

    message Email {
      enum Type {
        HOME   = 1;
        MOBILE = 2;
        WORK   = 3;
        CUSTOM = 4;
      }

      optional string value = 1;
      optional Type   type  = 2;
      optional string label = 3;
    }

    message PostalAddress {
      enum Type {
        HOME   = 1;
        WORK   = 2;
        CUSTOM = 3;
      }

      optional Type   type         = 1;
      optional string label        = 2;
      optional string street       = 3;
      optional string pobox        = 4;
      optional string neighborhood = 5;
      optional string city         = 6;
      optional string region       = 7;
      optional string postcode     = 8;
      optional string country      = 9;
    }

    message Avatar {
      optional AttachmentPointer avatar    = 1;
      optional bool              isProfile = 2;
    }

    optional Name              name            = 1;
    repeated Phone             number          = 3;
    repeated Email             email           = 4;
    repeated PostalAddress     address         = 5;
    optional Avatar            avatar          = 6;
    optional string            organization    = 7;
  }

  message Preview {
    optional string            url   = 1;
    optional string            title = 2;
    optional AttachmentPointer image = 3;
  }

  message Sticker {
    optional bytes             packId    = 1;
    optional bytes             packKey   = 2;
    optional uint32            stickerId = 3;
    optional AttachmentPointer data      = 4;
  }

  optional string              body                = 1;
  repeated AttachmentPointer   attachments         = 2;
  optional GroupContext        group               = 3;
  optional uint32              flags               = 4;
  optional uint32              expireTimer         = 5;
  optional bytes               profileKey          = 6;
  optional uint64              timestamp           = 7;
  optional Quote               quote               = 8;
  repeated Contact             contact             = 9;
  repeated Preview             preview             = 10;
  optional Sticker             sticker             = 11;
  optional LokiUserProfile     profile             = 101; // Loki - The profile of the current user
  optional ClosedGroupUpdate   closedGroupUpdate   = 103; // Loki
  optional ClosedGroupUpdateV2 closedGroupUpdateV2 = 104;
  optional string              syncTarget          = 105;
}

message LokiUserProfile {
  optional string displayName       = 1;
  optional string profilePictureURL = 2;
}

message ClosedGroupUpdateV2 {

  enum Type {
    NEW                 = 1; // publicKey, name, encryptionKeyPair, members, admins
    UPDATE              = 2; // name, members
    ENCRYPTION_KEY_PAIR = 3; // wrappers
    NAME_CHANGE         = 4; // name
    MEMBERS_ADDED       = 5; // members
    MEMBERS_REMOVED     = 6; // members
    MEMBER_LEFT         = 7;
  }

  message KeyPairWrapper {
    // @required
    required bytes publicKey        = 1; // The public key of the user the key pair is meant for
    // @required
    required bytes encryptedKeyPair = 2; // The encrypted key pair
  }

  // @required
  required Type           type              = 1;
  optional bytes          publicKey         = 2;
  optional string         name              = 3;
  optional KeyPair        encryptionKeyPair = 4;
  repeated bytes          members           = 5;
  repeated bytes          admins            = 6;
  repeated KeyPairWrapper wrappers          = 7;
}

message KeyPair {
  // @required
  required bytes publicKey  = 1;
  // @required
  required bytes privateKey = 2;
}

message ClosedGroupUpdate {

  enum Type {
    NEW                = 0; // groupPublicKey, name, groupPrivateKey, senderKeys, members, admins
    INFO               = 1; // groupPublicKey, name, senderKeys, members, admins
    SENDER_KEY_REQUEST = 2; // groupPublicKey
    SENDER_KEY         = 3; // groupPublicKey, senderKeys
  }

  message SenderKey {
    // @required
    optional bytes  chainKey  = 1;
    // @required
    optional uint32 keyIndex  = 2;
    // @required
    optional bytes  publicKey = 3;
  }

  optional string    name            = 1;
  // @required
  optional bytes     groupPublicKey  = 2;
  optional bytes     groupPrivateKey = 3;
  repeated SenderKey senderKeys      = 4;
  repeated bytes     members         = 5;
  repeated bytes     admins          = 6;
  // @required
  optional Type      type            = 7;
}

message NullMessage {
  optional bytes padding = 1;
}

message ReceiptMessage {
  enum Type {
    DELIVERY = 0;
    READ     = 1;
  }

  optional Type   type      = 1;
  repeated uint64 timestamp = 2;
}

message TypingMessage {
    enum Action {
        STARTED = 0;
        STOPPED = 1;
    }

    optional uint64 timestamp = 1;
    optional Action action    = 2;
    optional bytes  groupId   = 3;
}

message ConfigurationMessage {

  message ClosedGroup {
    optional bytes   publicKey         = 1;
    optional string  name              = 2;
    optional KeyPair encryptionKeyPair = 3;
    repeated bytes   members           = 4;
    repeated bytes   admins            = 5;
  }

  repeated ClosedGroup closedGroups = 1;
  repeated string      openGroups   = 2;
}

message Verified {
  enum State {
    DEFAULT    = 0;
    VERIFIED   = 1;
    UNVERIFIED = 2;
  }

  optional string destination = 1;
  optional bytes  identityKey = 2;
  optional State  state       = 3;
  optional bytes  nullMessage = 4;
}

message SyncMessage {
  message Sent {
    message UnidentifiedDeliveryStatus {
      optional string destination  = 1;
      optional bool   unidentified = 2;
    }

    optional string                     destination              = 1;
    optional uint64                     timestamp                = 2;
    optional DataMessage                message                  = 3;
    optional uint64                     expirationStartTimestamp = 4;
    repeated UnidentifiedDeliveryStatus unidentifiedStatus       = 5;
  }

  message Contacts {
    optional AttachmentPointer blob     = 1;
    optional bool              complete = 2 [default = false];
    optional bytes             data     = 101;
  }

  message Groups {
    optional AttachmentPointer blob = 1;
    optional bytes             data = 101;
  }

  message Blocked {
    repeated string numbers  = 1;
    repeated bytes  groupIds = 2;
  }

  message Request {
    enum Type {
      UNKNOWN       = 0;
      CONTACTS      = 1;
      GROUPS        = 2;
      BLOCKED       = 3;
      CONFIGURATION = 4;
    }

    optional Type type = 1;
  }

  message Read {
    optional string sender    = 1;
    optional uint64 timestamp = 2;
  }

  message Configuration {
    optional bool readReceipts                   = 1;
    optional bool unidentifiedDeliveryIndicators = 2;
    optional bool typingIndicators               = 3;
    optional bool linkPreviews                   = 4;
  }

  message StickerPackOperation {
    enum Type {
      INSTALL = 0;
      REMOVE  = 1;
    }

    optional bytes packId  = 1;
    optional bytes packKey = 2;
    optional Type  type    = 3;
  }

  message OpenGroupDetails {
    optional string url       = 1;
    optional uint32 channelID = 2;
  }

  optional Sent                 sent                 = 1;
  optional Contacts             contacts             = 2;
  optional Groups               groups               = 3;
  optional Request              request              = 4;
  repeated Read                 read                 = 5;
  optional Blocked              blocked              = 6;
  optional Verified             verified             = 7;
  optional Configuration        configuration        = 9;
  optional bytes                padding              = 8;
  repeated StickerPackOperation stickerPackOperation = 10;
  repeated OpenGroupDetails     openGroups           = 100;
}

message AttachmentPointer {
  enum Flags {
    VOICE_MESSAGE = 1;
  }

  optional fixed64 id          = 1;
  optional string  contentType = 2;
  optional bytes   key         = 3;
  optional uint32  size        = 4;
  optional bytes   thumbnail   = 5;
  optional bytes   digest      = 6;
  optional string  fileName    = 7;
  optional uint32  flags       = 8;
  optional uint32  width       = 9;
  optional uint32  height      = 10;
  optional string  caption     = 11;
  optional string  url         = 101;
}

message GroupContext {
  enum Type {
    UNKNOWN      = 0;
    UPDATE       = 1;
    DELIVER      = 2;
    QUIT         = 3;
    REQUEST_INFO = 4;
  }
  optional bytes             id      = 1;
  optional Type              type    = 2;
  optional string            name    = 3;
  repeated string            members = 4;
  optional AttachmentPointer avatar  = 5;
  repeated string            admins  = 6;

  // Loki - These fields are only used internally for the Android code base.
  // This is so that we can differentiate adding/kicking.
  // DO NOT USE WHEN SENDING MESSAGES.
  repeated string           newMembers     = 998;
  repeated string           removedMembers = 999;
}

message ContactDetails {
  message Avatar {
    optional string contentType = 1;
    optional uint32 length      = 2;
  }

  optional string   number      = 1;
  optional string   name        = 2;
  optional Avatar   avatar      = 3;
  optional string   color       = 4;
  optional Verified verified    = 5;
  optional bytes    profileKey  = 6;
  optional bool     blocked     = 7;
  optional uint32   expireTimer = 8;
  optional string   nickname    = 101; // Loki
}

message GroupDetails {
  message Avatar {
    optional string contentType = 1;
    optional uint32 length      = 2;
  }

  optional bytes  id          = 1;
  optional string name        = 2;
  repeated string members     = 3;
  optional Avatar avatar      = 4;
  optional bool   active      = 5 [default = true];
  optional uint32 expireTimer = 6;
  optional string color       = 7;
  optional bool   blocked     = 8;
  repeated string admins      = 9;
}