177 lines
10 KiB
Swift
177 lines
10 KiB
Swift
import PromiseKit
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@objc(LKFileServerAPI)
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public final class LokiFileServerAPI : LokiDotNetAPI {
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// MARK: Settings
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#if DEBUG
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@objc public static let server = "http://file-dev.lokinet.org"
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#else
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@objc public static let server = "https://file.getsession.org"
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#endif
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public static let maxFileSize = 10_000_000 // 10 MB
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private static let deviceLinkType = "network.loki.messenger.devicemapping"
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private static let attachmentType = "net.app.core.oembed"
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// MARK: Database
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override internal class var authTokenCollection: String { return "LokiStorageAuthTokenCollection" }
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// MARK: Device Links (Public API)
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/// Gets the device links associated with the given hex encoded public key from the
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/// server and stores and returns the valid ones.
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public static func getDeviceLinks(associatedWith hexEncodedPublicKey: String, in transaction: YapDatabaseReadWriteTransaction? = nil) -> Promise<Set<DeviceLink>> {
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return getDeviceLinks(associatedWith: [ hexEncodedPublicKey ], in: transaction)
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}
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/// Gets the device links associated with the given hex encoded public keys from the
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/// server and stores and returns the valid ones.
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public static func getDeviceLinks(associatedWith hexEncodedPublicKeys: Set<String>, in transaction: YapDatabaseReadWriteTransaction? = nil) -> Promise<Set<DeviceLink>> {
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// All of this has to happen on DispatchQueue.global() due to the way OWSMessageManager works
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let hexEncodedPublicKeysDescription = "[ \(hexEncodedPublicKeys.joined(separator: ", ")) ]"
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print("[Loki] Getting device links for: \(hexEncodedPublicKeysDescription).")
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return getAuthToken(for: server, in: transaction).then(on: DispatchQueue.global()) { token -> Promise<Set<DeviceLink>> in
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let queryParameters = "ids=\(hexEncodedPublicKeys.map { "@\($0)" }.joined(separator: ","))&include_user_annotations=1"
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let url = URL(string: "\(server)/users?\(queryParameters)")!
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let request = TSRequest(url: url)
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return LokiFileServerProxy(for: server).perform(request, withCompletionQueue: DispatchQueue.global()).map(on: DispatchQueue.global()) { rawResponse -> Set<DeviceLink> in
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guard let json = rawResponse as? JSON, let data = json["data"] as? [JSON] else {
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print("[Loki] Couldn't parse device links for users: \(hexEncodedPublicKeys) from: \(rawResponse).")
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throw LokiDotNetAPIError.parsingFailed
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}
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return Set(data.flatMap { data -> [DeviceLink] in
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guard let annotations = data["annotations"] as? [JSON], !annotations.isEmpty else { return [] }
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guard let annotation = annotations.first(where: { $0["type"] as? String == deviceLinkType }),
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let value = annotation["value"] as? JSON, let rawDeviceLinks = value["authorisations"] as? [JSON],
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let hexEncodedPublicKey = data["username"] as? String else {
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print("[Loki] Couldn't parse device links from: \(rawResponse).")
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return []
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}
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return rawDeviceLinks.compactMap { rawDeviceLink in
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guard let masterHexEncodedPublicKey = rawDeviceLink["primaryDevicePubKey"] as? String, let slaveHexEncodedPublicKey = rawDeviceLink["secondaryDevicePubKey"] as? String,
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let base64EncodedSlaveSignature = rawDeviceLink["requestSignature"] as? String else {
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print("[Loki] Couldn't parse device link for user: \(hexEncodedPublicKey) from: \(rawResponse).")
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return nil
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}
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let masterSignature: Data?
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if let base64EncodedMasterSignature = rawDeviceLink["grantSignature"] as? String {
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masterSignature = Data(base64Encoded: base64EncodedMasterSignature)
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} else {
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masterSignature = nil
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}
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let slaveSignature = Data(base64Encoded: base64EncodedSlaveSignature)
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let master = DeviceLink.Device(hexEncodedPublicKey: masterHexEncodedPublicKey, signature: masterSignature)
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let slave = DeviceLink.Device(hexEncodedPublicKey: slaveHexEncodedPublicKey, signature: slaveSignature)
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let deviceLink = DeviceLink(between: master, and: slave)
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if let masterSignature = masterSignature {
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guard DeviceLinkingUtilities.hasValidMasterSignature(deviceLink) else {
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print("[Loki] Received a device link with an invalid master signature.")
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return nil
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}
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}
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guard DeviceLinkingUtilities.hasValidSlaveSignature(deviceLink) else {
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print("[Loki] Received a device link with an invalid slave signature.")
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return nil
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}
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return deviceLink
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}
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})
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}.map(on: DispatchQueue.global()) { deviceLinks -> Set<DeviceLink> in
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func setDeviceLinks(in transaction: YapDatabaseReadWriteTransaction) {
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storage.setDeviceLinks(deviceLinks, in: transaction)
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}
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if let transaction = transaction, transaction.connection.pendingTransactionCount != 0 {
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setDeviceLinks(in: transaction)
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} else {
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storage.dbReadWriteConnection.readWrite { transaction in
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setDeviceLinks(in: transaction)
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}
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}
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return deviceLinks
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}
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}
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}
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public static func setDeviceLinks(_ deviceLinks: Set<DeviceLink>) -> Promise<Void> {
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print("[Loki] Updating device links.")
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return getAuthToken(for: server).then { token -> Promise<Void> in
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let isMaster = deviceLinks.contains { $0.master.hexEncodedPublicKey == userHexEncodedPublicKey }
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let deviceLinksAsJSON = deviceLinks.map { $0.toJSON() }
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let value = !deviceLinksAsJSON.isEmpty ? [ "isPrimary" : isMaster ? 1 : 0, "authorisations" : deviceLinksAsJSON ] : nil
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let annotation: JSON = [ "type" : deviceLinkType, "value" : value ]
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let parameters: JSON = [ "annotations" : [ annotation ] ]
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let url = URL(string: "\(server)/users/me")!
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let request = TSRequest(url: url, method: "PATCH", parameters: parameters)
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request.allHTTPHeaderFields = [ "Content-Type" : "application/json", "Authorization" : "Bearer \(token)" ]
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return LokiFileServerProxy(for: server).perform(request).map { _ in }.retryingIfNeeded(maxRetryCount: 8).recover { error in
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print("Couldn't update device links due to error: \(error).")
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throw error
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}
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}
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}
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/// Adds the given device link to the user's device mapping on the server.
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public static func addDeviceLink(_ deviceLink: DeviceLink) -> Promise<Void> {
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var deviceLinks: Set<DeviceLink> = []
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storage.dbReadConnection.read { transaction in
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deviceLinks = storage.getDeviceLinks(for: userHexEncodedPublicKey, in: transaction)
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}
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deviceLinks.insert(deviceLink)
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return setDeviceLinks(deviceLinks).map {
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storage.dbReadWriteConnection.readWrite { transaction in
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storage.addDeviceLink(deviceLink, in: transaction)
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}
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}
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}
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/// Removes the given device link from the user's device mapping on the server.
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public static func removeDeviceLink(_ deviceLink: DeviceLink) -> Promise<Void> {
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var deviceLinks: Set<DeviceLink> = []
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storage.dbReadConnection.read { transaction in
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deviceLinks = storage.getDeviceLinks(for: userHexEncodedPublicKey, in: transaction)
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}
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deviceLinks.remove(deviceLink)
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return setDeviceLinks(deviceLinks).map {
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storage.dbReadWriteConnection.readWrite { transaction in
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storage.removeDeviceLink(deviceLink, in: transaction)
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}
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}
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}
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// MARK: Device Links (Public Obj-C API)
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@objc(getDeviceLinksAssociatedWith:)
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public static func objc_getDeviceLinks(associatedWith hexEncodedPublicKey: String) -> AnyPromise {
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return AnyPromise.from(getDeviceLinks(associatedWith: hexEncodedPublicKey))
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}
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// MARK: Profile Pictures (Public API)
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public static func uploadProfilePicture(_ profilePicture: Data) -> Promise<String> {
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guard profilePicture.count < maxFileSize else { return Promise(error: LokiDotNetAPIError.maxFileSizeExceeded) }
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let url = "\(server)/files"
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let parameters: JSON = [ "type" : attachmentType, "Content-Type" : "application/binary" ]
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var error: NSError?
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var request = AFHTTPRequestSerializer().multipartFormRequest(withMethod: "POST", urlString: url, parameters: parameters, constructingBodyWith: { formData in
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formData.appendPart(withFileData: profilePicture, name: "content", fileName: UUID().uuidString, mimeType: "application/binary")
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}, error: &error)
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// Uploads to the Loki File Server shouldn't include any personally identifiable information so use a dummy auth token
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request.addValue("Bearer loki", forHTTPHeaderField: "Authorization")
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if let error = error {
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print("[Loki] Couldn't upload profile picture due to error: \(error).")
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return Promise(error: error)
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}
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return LokiFileServerProxy(for: server).performLokiFileServerNSURLRequest(request as NSURLRequest).map { responseObject in
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guard let json = responseObject as? JSON, let data = json["data"] as? JSON, let downloadURL = data["url"] as? String else {
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print("[Loki] Couldn't parse profile picture from: \(responseObject).")
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throw LokiDotNetAPIError.parsingFailed
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}
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UserDefaults.standard[.lastProfilePictureUpload] = Date()
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return downloadURL
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}
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}
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// MARK: Profile Pictures (Public Obj-C API)
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@objc(uploadProfilePicture:)
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public static func objc_uploadProfilePicture(_ profilePicture: Data) -> AnyPromise {
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return AnyPromise.from(uploadProfilePicture(profilePicture))
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}
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}
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