session-ios/SessionMessagingKit/Database/LegacyDatabase/SMKLegacyModels.swift

226 lines
10 KiB
Swift

// Copyright © 2022 Rangeproof Pty Ltd. All rights reserved.
import Foundation
import Mantle
import YapDatabase
import SignalCoreKit
public enum Legacy {
// MARK: - Collections and Keys
internal static let contactThreadPrefix = "c"
internal static let groupThreadPrefix = "g"
internal static let closedGroupIdPrefix = "__textsecure_group__!"
internal static let closedGroupKeyPairPrefix = "SNClosedGroupEncryptionKeyPairCollection-"
public static let contactCollection = "LokiContactCollection"
internal static let threadCollection = "TSThread"
internal static let disappearingMessagesCollection = "OWSDisappearingMessagesConfiguration"
internal static let closedGroupPublicKeyCollection = "SNClosedGroupPublicKeyCollection"
internal static let closedGroupFormationTimestampCollection = "SNClosedGroupFormationTimestampCollection"
internal static let closedGroupZombieMembersCollection = "SNClosedGroupZombieMembersCollection"
// MARK: - Types
public typealias Contact = _LegacyContact
public typealias DisappearingMessagesConfiguration = _LegacyDisappearingMessagesConfiguration
@objc(SNProfile)
public class Profile: NSObject, NSCoding {
public var displayName: String?
public var profileKey: Data?
public var profilePictureURL: String?
internal init(displayName: String, profileKey: Data? = nil, profilePictureURL: String? = nil) {
self.displayName = displayName
self.profileKey = profileKey
self.profilePictureURL = profilePictureURL
}
public required init?(coder: NSCoder) {
if let displayName = coder.decodeObject(forKey: "displayName") as! String? { self.displayName = displayName }
if let profileKey = coder.decodeObject(forKey: "profileKey") as! Data? { self.profileKey = profileKey }
if let profilePictureURL = coder.decodeObject(forKey: "profilePictureURL") as! String? { self.profilePictureURL = profilePictureURL }
}
public func encode(with coder: NSCoder) {
coder.encode(displayName, forKey: "displayName")
coder.encode(profileKey, forKey: "profileKey")
coder.encode(profilePictureURL, forKey: "profilePictureURL")
}
public static func fromProto(_ proto: SNProtoDataMessage) -> Profile? {
guard let profileProto = proto.profile, let displayName = profileProto.displayName else { return nil }
let profileKey = proto.profileKey
let profilePictureURL = profileProto.profilePicture
if let profileKey = profileKey, let profilePictureURL = profilePictureURL {
return Profile(displayName: displayName, profileKey: profileKey, profilePictureURL: profilePictureURL)
} else {
return Profile(displayName: displayName)
}
}
public func toProto() -> SNProtoDataMessage? {
guard let displayName = displayName else {
SNLog("Couldn't construct profile proto from: \(self).")
return nil
}
let dataMessageProto = SNProtoDataMessage.builder()
let profileProto = SNProtoDataMessageLokiProfile.builder()
profileProto.setDisplayName(displayName)
if let profileKey = profileKey, let profilePictureURL = profilePictureURL {
dataMessageProto.setProfileKey(profileKey)
profileProto.setProfilePicture(profilePictureURL)
}
do {
dataMessageProto.setProfile(try profileProto.build())
return try dataMessageProto.build()
} catch {
SNLog("Couldn't construct profile proto from: \(self).")
return nil
}
}
// MARK: Description
public override var description: String {
"""
Profile(
displayName: \(displayName ?? "null"),
profileKey: \(profileKey?.description ?? "null"),
profilePictureURL: \(profilePictureURL ?? "null")
)
"""
}
}
}
// Note: Looks like Swift doesn't expose nested types well (in the `-Swift` header this was
// appearing with `SWIFT_CLASS_NAME("Contact")` which conflicts with the new type and has a
// different structure) as a result we cannot nest this cleanly
@objc(SNContact)
public class _LegacyContact: NSObject, NSCoding { // NSObject/NSCoding conformance is needed for YapDatabase compatibility
@objc public let sessionID: String
/// The URL from which to fetch the contact's profile picture.
@objc public var profilePictureURL: String?
/// The file name of the contact's profile picture on local storage.
@objc public var profilePictureFileName: String?
/// The key with which the profile is encrypted.
@objc public var profileEncryptionKey: OWSAES256Key?
/// The ID of the thread associated with this contact.
@objc public var threadID: String?
/// This flag is used to determine whether we should auto-download files sent by this contact.
@objc public var isTrusted = false
/// This flag is used to determine whether message requests from this contact are approved
@objc public var isApproved = false
/// This flag is used to determine whether message requests from this contact are blocked
@objc public var isBlocked = false {
didSet {
if isBlocked {
hasBeenBlocked = true
}
}
}
/// This flag is used to determine whether this contact has approved the current users message request
@objc public var didApproveMe = false
/// This flag is used to determine whether this contact has ever been blocked (will be included in the config message if so)
@objc public var hasBeenBlocked = false
// MARK: Name
/// The name of the contact. Use this whenever you need the "real", underlying name of a user (e.g. when sending a message).
@objc public var name: String?
/// The contact's nickname, if the user set one.
@objc public var nickname: String?
/// The name to display in the UI. For local use only.
@objc public func displayName(for context: Context) -> String? {
if let nickname = nickname { return nickname }
switch context {
case .regular: return name
case .openGroup:
// In open groups, where it's more likely that multiple users have the same name, we display a bit of the Session ID after
// a user's display name for added context.
guard let name = name else { return nil }
let endIndex = sessionID.endIndex
let cutoffIndex = sessionID.index(endIndex, offsetBy: -8)
return "\(name) (...\(sessionID[cutoffIndex..<endIndex]))"
}
}
// MARK: Context
@objc(SNContactContext)
public enum Context : Int {
case regular, openGroup
}
// MARK: Initialization
@objc public init(sessionID: String) {
self.sessionID = sessionID
super.init()
}
private override init() { preconditionFailure("Use init(sessionID:) instead.") }
// MARK: Validation
public var isValid: Bool {
if profilePictureURL != nil { return (profileEncryptionKey != nil) }
if profileEncryptionKey != nil { return (profilePictureURL != nil) }
return true
}
// MARK: Coding
public required init?(coder: NSCoder) {
guard let sessionID = coder.decodeObject(forKey: "sessionID") as! String? else { return nil }
self.sessionID = sessionID
isTrusted = coder.decodeBool(forKey: "isTrusted")
if let name = coder.decodeObject(forKey: "displayName") as! String? { self.name = name }
if let nickname = coder.decodeObject(forKey: "nickname") as! String? { self.nickname = nickname }
if let profilePictureURL = coder.decodeObject(forKey: "profilePictureURL") as! String? { self.profilePictureURL = profilePictureURL }
if let profilePictureFileName = coder.decodeObject(forKey: "profilePictureFileName") as! String? { self.profilePictureFileName = profilePictureFileName }
if let profileEncryptionKey = coder.decodeObject(forKey: "profilePictureEncryptionKey") as! OWSAES256Key? { self.profileEncryptionKey = profileEncryptionKey }
if let threadID = coder.decodeObject(forKey: "threadID") as! String? { self.threadID = threadID }
let isBlockedFlag: Bool = coder.decodeBool(forKey: "isBlocked")
isApproved = coder.decodeBool(forKey: "isApproved")
isBlocked = isBlockedFlag
didApproveMe = coder.decodeBool(forKey: "didApproveMe")
hasBeenBlocked = (coder.decodeBool(forKey: "hasBeenBlocked") || isBlockedFlag)
}
public func encode(with coder: NSCoder) {
coder.encode(sessionID, forKey: "sessionID")
coder.encode(name, forKey: "displayName")
coder.encode(nickname, forKey: "nickname")
coder.encode(profilePictureURL, forKey: "profilePictureURL")
coder.encode(profilePictureFileName, forKey: "profilePictureFileName")
coder.encode(profileEncryptionKey, forKey: "profilePictureEncryptionKey")
coder.encode(threadID, forKey: "threadID")
coder.encode(isTrusted, forKey: "isTrusted")
coder.encode(isApproved, forKey: "isApproved")
coder.encode(isBlocked, forKey: "isBlocked")
coder.encode(didApproveMe, forKey: "didApproveMe")
coder.encode(hasBeenBlocked, forKey: "hasBeenBlocked")
}
// MARK: Equality
override public func isEqual(_ other: Any?) -> Bool {
guard let other = other as? _LegacyContact else { return false }
return sessionID == other.sessionID
}
// MARK: Hashing
override public var hash: Int { // Override NSObject.hash and not Hashable.hashValue or Hashable.hash(into:)
return sessionID.hash
}
// MARK: Description
override public var description: String {
nickname ?? name ?? sessionID
}
// MARK: Convenience
@objc(contextForThread:)
public static func context(for thread: TSThread) -> Context {
return ((thread as? TSGroupThread)?.isOpenGroup == true) ? .openGroup : .regular
}
}