95 lines
4.0 KiB
Swift
95 lines
4.0 KiB
Swift
//
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// Copyright (c) 2020 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 SignalServiceProfile: NSObject {
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public enum ValidationError: Error {
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case invalid(description: String)
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case invalidIdentityKey(description: String)
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case invalidProfileName(description: String)
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}
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public let address: SignalServiceAddress
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public let identityKey: Data
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public let profileNameEncrypted: Data?
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public let username: String?
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public let avatarUrlPath: String?
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public let unidentifiedAccessVerifier: Data?
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public let hasUnrestrictedUnidentifiedAccess: Bool
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public let supportsUUID: Bool
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public let supportsGroupsV2: Bool
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public let credential: Data?
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public init(address: SignalServiceAddress?, responseObject: Any?) throws {
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guard let params = ParamParser(responseObject: responseObject) else {
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throw ValidationError.invalid(description: "invalid response: \(String(describing: responseObject))")
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}
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if let address = address {
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self.address = address
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} else if let uuidString: String = try params.required(key: "uuid") {
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self.address = SignalServiceAddress(uuidString: uuidString)
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} else {
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throw ValidationError.invalid(description: "response or input missing address")
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}
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let identityKeyWithType = try params.requiredBase64EncodedData(key: "identityKey")
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guard identityKeyWithType.count == kIdentityKeyLength else {
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throw ValidationError.invalidIdentityKey(description: "malformed identity key \(identityKeyWithType.hexadecimalString) with decoded length: \(identityKeyWithType.count)")
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}
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do {
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// `removeKeyType` is an objc category method only on NSData, so temporarily cast.
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self.identityKey = try (identityKeyWithType as NSData).removeKeyType() as Data
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} catch {
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// `removeKeyType` throws an SCKExceptionWrapperError, which, typically should
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// be unwrapped by any objc code calling this method.
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owsFailDebug("identify key had unexpected format")
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throw ValidationError.invalidIdentityKey(description: "malformed identity key \(identityKeyWithType.hexadecimalString) with data: \(identityKeyWithType)")
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}
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self.profileNameEncrypted = try params.optionalBase64EncodedData(key: "name")
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self.username = try params.optional(key: "username")
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let avatarUrlPath: String? = try params.optional(key: "avatar")
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self.avatarUrlPath = avatarUrlPath
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self.unidentifiedAccessVerifier = try params.optionalBase64EncodedData(key: "unidentifiedAccess")
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self.hasUnrestrictedUnidentifiedAccess = try params.optional(key: "unrestrictedUnidentifiedAccess") ?? false
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if let capabilities = ParamParser(responseObject: try params.required(key: "capabilities")) {
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if let value: Bool = try capabilities.optional(key: "uuid") {
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self.supportsUUID = value
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} else {
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if FeatureFlags.uuidCapabilities {
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owsFailDebug("Missing uuid capability.")
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}
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// The capability has been retired from the service.
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self.supportsUUID = true
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}
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if !FeatureFlags.groupsV2SetCapability {
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self.supportsGroupsV2 = false
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} else if let value: Bool = try capabilities.optional(key: "gv2") {
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self.supportsGroupsV2 = value
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} else {
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if RemoteConfig.groupsV2CreateGroups {
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owsFailDebug("Missing groups v2 capability.")
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}
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// The capability has been retired from the service.
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self.supportsGroupsV2 = true
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}
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} else {
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owsFailDebug("Missing capabilities.")
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self.supportsUUID = false
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self.supportsGroupsV2 = false
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}
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self.credential = try params.optionalBase64EncodedData(key: "credential")
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}
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}
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