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Add LokiGroupChatAPI.getDeletedMessageIDs(...) & private server support

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pull/40/head
Niels Andriesse 6 years ago
parent 7ef47968e3
commit 7d3d0b31d9
4 changed files with 145 additions and 51 deletions
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4
Signal/src/AppDelegate.m
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@ -1492,8 +1492,8 @@ static NSTimeInterval launchStartedAt;
BOOL isPublicChatSetUp = [NSUserDefaults.standardUserDefaults boolForKey:@"isPublicChatSetUp"];
if (isPublicChatSetUp) { return; }
NSString *title = NSLocalizedString(@"Loki Public Chat", @"");
NSData *groupID = [[[LKGroupChatAPI.serverURL stringByAppendingString:@"."] stringByAppendingString:@(LKGroupChatAPI.publicChatID).stringValue] dataUsingEncoding:NSUTF8StringEncoding];
TSGroupModel *group = [[TSGroupModel alloc] initWithTitle:title memberIds:@[ OWSIdentityManager.sharedManager.identityKeyPair.hexEncodedPublicKey, LKGroupChatAPI.serverURL ] image:nil groupId:groupID];
NSData *groupID = [[[LKGroupChatAPI.publicChatServer stringByAppendingString:@"."] stringByAppendingString:@(LKGroupChatAPI.publicChatID).stringValue] dataUsingEncoding:NSUTF8StringEncoding];
TSGroupModel *group = [[TSGroupModel alloc] initWithTitle:title memberIds:@[ OWSIdentityManager.sharedManager.identityKeyPair.hexEncodedPublicKey, LKGroupChatAPI.publicChatServer ] image:nil groupId:groupID];
__block TSGroupThread *thread;
[OWSPrimaryStorage.dbReadWriteConnection readWriteWithBlock:^(YapDatabaseReadWriteTransaction *transaction) {
thread = [TSGroupThread getOrCreateThreadWithGroupModel:group transaction:transaction];

4
Signal/src/Loki/LokiGroupChatPoller.swift
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@ -25,9 +25,9 @@ public final class LokiGroupChatPoller : NSObject {
private func poll() {
let group = self.group
let _ = LokiGroupChatAPI.getMessages(for: group).map { messages in
let _ = LokiGroupChatAPI.getMessages(for: group, on: LokiGroupChatAPI.publicChatServer).map { messages in
messages.reversed().map { message in
let id = "\(LokiGroupChatAPI.serverURL).\(group)".data(using: String.Encoding.utf8)!
let id = "\(LokiGroupChatAPI.publicChatServer).\(group)".data(using: String.Encoding.utf8)!
let x1 = SSKProtoGroupContext.builder(id: id, type: .deliver)
x1.setName(NSLocalizedString("Loki Public Chat", comment: ""))
let x2 = SSKProtoDataMessage.builder()

182
SignalServiceKit/src/Loki/API/LokiGroupChatAPI.swift
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@ -2,26 +2,87 @@ import PromiseKit
@objc(LKGroupChatAPI)
public final class LokiGroupChatAPI : NSObject {
internal static let storage = OWSPrimaryStorage.shared()
private static let storage = OWSPrimaryStorage.shared()
@objc public static let serverURL = "https://chat.lokinet.org"
private static let batchCount = 8
// MARK: Settings
private static let fallbackBatchCount = 40
private static let maxRetryCount: UInt = 4
// MARK: Public Chat
@objc public static let publicChatServer = "https://chat.lokinet.org"
@objc public static let publicChatMessageType = "network.loki.messenger.publicChat"
@objc public static let publicChatID = 1
private static let maxRetryCount: UInt = 4
private static let tokenCollection = "LokiGroupChatTokenCollection"
internal static var userDisplayName: String { return SSKEnvironment.shared.contactsManager.displayName(forPhoneIdentifier: userHexEncodedPublicKey) ?? "Anonymous" }
private static var userKeyPair: ECKeyPair { return OWSIdentityManager.shared().identityKeyPair()! }
private static var userHexEncodedPublicKey: String { return userKeyPair.hexEncodedPublicKey }
// MARK: Convenience
private static var userDisplayName: String {
return SSKEnvironment.shared.contactsManager.displayName(forPhoneIdentifier: userHexEncodedPublicKey) ?? "Anonymous"
}
private static var userKeyPair: ECKeyPair {
return OWSIdentityManager.shared().identityKeyPair()!
}
private static var userHexEncodedPublicKey: String {
return userKeyPair.hexEncodedPublicKey
}
// MARK: Error
public enum Error : Swift.Error {
case tokenParsingFailed, tokenDecryptionFailed, messageParsingFailed
}
private static func getTokenFromServer() -> Promise<String> {
print("[Loki] Getting group chat auth token.")
let url = URL(string: "\(serverURL)/loki/v1/get_challenge?pubKey=\(userHexEncodedPublicKey)")!
// MARK: Database
private static let authTokenCollection = "LokiGroupChatAuthTokenCollection"
private static let lastMessageServerIDCollection = "LokiGroupChatLastMessageServerIDCollection"
private static let firstMessageServerIDCollection = "LokiGroupChatFirstMessageServerIDCollection"
private static func getAuthTokenFromDatabase(for server: String) -> String? {
var result: String? = nil
storage.dbReadConnection.read { transaction in
result = transaction.object(forKey: server, inCollection: authTokenCollection) as! String?
}
return result
}
private static func setAuthToken(for server: String, to newValue: String) {
storage.dbReadWriteConnection.readWrite { transaction in
transaction.setObject(newValue, forKey: server, inCollection: authTokenCollection)
}
}
private static func getLastMessageServerID(for group: UInt, on server: String) -> UInt? {
var result: UInt? = nil
storage.dbReadConnection.read { transaction in
result = transaction.object(forKey: "\(server).\(group)", inCollection: lastMessageServerIDCollection) as! UInt?
}
return result
}
private static func setLastMessageServerID(for group: UInt, on server: String, to newValue: UInt) {
storage.dbReadWriteConnection.readWrite { transaction in
transaction.setObject(newValue, forKey: "\(server).\(group)", inCollection: lastMessageServerIDCollection)
}
}
private static func getFirstMessageServerID(for group: UInt, on server: String) -> UInt? {
var result: UInt? = nil
storage.dbReadConnection.read { transaction in
result = transaction.object(forKey: "\(server).\(group)", inCollection: firstMessageServerIDCollection) as! UInt?
}
return result
}
private static func setFirstMessageServerID(for group: UInt, on server: String, to newValue: UInt) {
storage.dbReadWriteConnection.readWrite { transaction in
transaction.setObject(newValue, forKey: "\(server).\(group)", inCollection: firstMessageServerIDCollection)
}
}
// MARK: Private API
private static func requestNewAuthToken(for server: String) -> Promise<String> {
print("[Loki] Requesting group chat auth token for server: \(server).")
let queryParameters = "pubKey=\(userHexEncodedPublicKey)"
let url = URL(string: "\(server)/loki/v1/get_challenge?\(queryParameters)")!
let request = TSRequest(url: url)
return TSNetworkManager.shared().makePromise(request: request).map { $0.responseObject }.map { rawResponse in
guard let json = rawResponse as? JSON, let base64EncodedChallenge = json["cipherText64"] as? String, let base64EncodedServerPublicKey = json["serverPubKey64"] as? String,
@ -35,59 +96,69 @@ public final class LokiGroupChatAPI : NSObject {
}
// The challenge is prefixed by the 16 bit IV
guard let tokenAsData = try? DiffieHellman.decrypt(challenge, publicKey: serverPublicKey, privateKey: userKeyPair.privateKey),
let token = String(bytes: tokenAsData, encoding: .utf8), token.count > 0 else {
let token = String(bytes: tokenAsData, encoding: .utf8) else {
throw Error.tokenDecryptionFailed
}
return token
}
}
internal static func submitToken(_ token: String) -> Promise<String> {
print("[Loki] Submitting group chat auth token.")
let url = URL(string: "\(serverURL)/loki/v1/submit_challenge")!
private static func submitAuthToken(_ token: String, for server: String) -> Promise<String> {
print("[Loki] Submitting group chat auth token for server: \(server).")
let url = URL(string: "\(server)/loki/v1/submit_challenge")!
let parameters = [ "pubKey" : userHexEncodedPublicKey, "token" : token ]
let request = TSRequest(url: url, method: "POST", parameters: parameters)
return TSNetworkManager.shared().makePromise(request: request).map { _ in token }
}
internal static func getToken() -> Promise<String> {
if let token = storage.dbReadConnection.string(forKey: serverURL, inCollection: tokenCollection), token.count > 0 {
private static func getAuthToken(for server: String) -> Promise<String> {
if let token = getAuthTokenFromDatabase(for: server) {
return Promise.value(token)
} else {
return getTokenFromServer().then { submitToken($0) }.map { token -> String in
storage.dbReadWriteConnection.setObject(token, forKey: serverURL, inCollection: tokenCollection)
return requestNewAuthToken(for: server).then { submitAuthToken($0, for: server) }.map { token -> String in
setAuthToken(for: server, to: token)
return token
}
}
}
public static func getMessages(for group: UInt) -> Promise<[LokiGroupMessage]> {
print("[Loki] Getting messages for group chat with ID: \(group).")
let queryParameters = "include_annotations=1&count=-\(batchCount)"
let url = URL(string: "\(serverURL)/channels/\(group)/messages?\(queryParameters)")!
// MARK: Public API
public static func getMessages(for group: UInt, on server: String) -> Promise<[LokiGroupMessage]> {
print("[Loki] Getting messages for group chat with ID: \(group) on server: \(server).")
var queryParameters = "include_annotations=1"
if let lastMessageServerID = getLastMessageServerID(for: group, on: server) {
queryParameters += "&since_id=\(lastMessageServerID)"
} else {
queryParameters += "&count=-\(fallbackBatchCount)"
}
let url = URL(string: "\(server)/channels/\(group)/messages?\(queryParameters)")!
let request = TSRequest(url: url)
return TSNetworkManager.shared().makePromise(request: request).map { $0.responseObject }.map { rawResponse in
guard let json = rawResponse as? JSON, let rawMessages = json["data"] as? [JSON] else {
print("[Loki] Couldn't parse messages for group chat with ID: \(group) from: \(rawResponse).")
print("[Loki] Couldn't parse messages for group chat with ID: \(group) on server: \(server) from: \(rawResponse).")
throw Error.messageParsingFailed
}
return rawMessages.flatMap { message in
guard let annotations = message["annotations"] as? [JSON], let annotation = annotations.first, let value = annotation["value"] as? JSON,
let serverID = message["id"] as? UInt, let body = message["text"] as? String, let hexEncodedPublicKey = value["source"] as? String, let displayName = value["from"] as? String,
let timestamp = value["timestamp"] as? UInt64 else {
print("[Loki] Couldn't parse message for group chat with ID: \(group) from: \(message).")
print("[Loki] Couldn't parse message for group chat with ID: \(group) on server: \(server) from: \(message).")
return nil
}
guard hexEncodedPublicKey != userHexEncodedPublicKey else { return nil }
let lastMessageServerID = getLastMessageServerID(for: group, on: server)
let firstMessageServerID = getFirstMessageServerID(for: group, on: server)
if serverID > (lastMessageServerID ?? 0) { setLastMessageServerID(for: group, on: server, to: serverID) }
if serverID < (firstMessageServerID ?? UInt.max) { setFirstMessageServerID(for: group, on: server, to: serverID) }
return LokiGroupMessage(serverID: serverID, hexEncodedPublicKey: hexEncodedPublicKey, displayName: displayName, body: body, type: publicChatMessageType, timestamp: timestamp)
}
}
}
public static func sendMessage(_ message: LokiGroupMessage, to group: UInt) -> Promise<LokiGroupMessage> {
return getToken().then { token -> Promise<LokiGroupMessage> in
print("[Loki] Sending message to group chat with ID: \(group).")
let url = URL(string: "\(serverURL)/channels/\(group)/messages")!
public static func sendMessage(_ message: LokiGroupMessage, to group: UInt, on server: String) -> Promise<LokiGroupMessage> {
return getAuthToken(for: server).then { token -> Promise<LokiGroupMessage> in
print("[Loki] Sending message to group chat with ID: \(group) on server: \(server).")
let url = URL(string: "\(server)/channels/\(group)/messages")!
let parameters = message.toJSON()
let request = TSRequest(url: url, method: "POST", parameters: parameters)
request.allHTTPHeaderFields = [ "Content-Type" : "application/json", "Authorization" : "Bearer \(token)" ]
@ -96,30 +167,53 @@ public final class LokiGroupChatAPI : NSObject {
// ISO8601DateFormatter doesn't support milliseconds before iOS 11
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "yyyy-MM-dd'T'HH:mm:ss.SSSZ"
guard let json = rawResponse as? JSON, let message = json["data"] as? JSON, let serverID = message["id"] as? UInt, let body = message["text"] as? String,
let dateAsString = message["created_at"] as? String, let date = dateFormatter.date(from: dateAsString) else {
print("[Loki] Couldn't parse messages for group chat with ID: \(group) from: \(rawResponse).")
guard let json = rawResponse as? JSON, let messageAsJSON = json["data"] as? JSON, let serverID = messageAsJSON["id"] as? UInt, let body = messageAsJSON["text"] as? String,
let dateAsString = messageAsJSON["created_at"] as? String, let date = dateFormatter.date(from: dateAsString) else {
print("[Loki] Couldn't parse messages for group chat with ID: \(group) on server: \(server) from: \(rawResponse).")
throw Error.messageParsingFailed
}
let timestamp = UInt64(date.timeIntervalSince1970) * 1000
return LokiGroupMessage(serverID: serverID, hexEncodedPublicKey: userHexEncodedPublicKey, displayName: displayName, body: body, type: publicChatMessageType, timestamp: timestamp)
}
}.recover { error -> Promise<LokiGroupMessage> in
if let error = error as? NetworkManagerError, error.statusCode == 401 {
print("[Loki] Group chat token expired; dropping it.")
storage.dbReadWriteConnection.removeObject(forKey: serverURL, inCollection: tokenCollection)
}.recover { error -> Promise<LokiGroupMessage> in
if let error = error as? NetworkManagerError, error.statusCode == 401 {
print("[Loki] Group chat auth token for: \(server) expired; dropping it.")
storage.dbReadWriteConnection.removeObject(forKey: server, inCollection: authTokenCollection)
}
throw error
}.retryingIfNeeded(maxRetryCount: maxRetryCount)
}
public static func getDeletedMessageIDs(for group: UInt, on server: String) -> Promise<[UInt]> {
print("[Loki] Getting deleted messages for group chat with ID: \(group) on server: \(server).")
let firstMessageServerID = getFirstMessageServerID(for: group, on: server) ?? 0
let queryParameters = "is_deleted=true&since_id=\(firstMessageServerID)"
let url = URL(string: "\(server)/channels/\(group)/messages?\(queryParameters)")!
let request = TSRequest(url: url)
return TSNetworkManager.shared().makePromise(request: request).map { $0.responseObject }.map { rawResponse in
guard let json = rawResponse as? JSON, let rawMessages = json["data"] as? [JSON] else {
print("[Loki] Couldn't parse deleted messages for group chat with ID: \(group) on server: \(server) from: \(rawResponse).")
throw Error.messageParsingFailed
}
return rawMessages.flatMap { message in
guard let serverID = message["id"] as? UInt else {
print("[Loki] Couldn't parse message for group chat with ID: \(group) on server: \(server) from: \(message).")
return nil
}
throw error
}.retryingIfNeeded(maxRetryCount: maxRetryCount)
let isDeleted = (message["is_deleted"] as? Bool ?? false)
return isDeleted ? serverID : nil
}
}
}
@objc(getMessagesForGroup:)
public static func objc_getMessages(for group: UInt) -> AnyPromise {
return AnyPromise.from(getMessages(for: group))
// MARK: Public API (Obj-C)
@objc(getMessagesForGroup:onServer:)
public static func objc_getMessages(for group: UInt, on server: String) -> AnyPromise {
return AnyPromise.from(getMessages(for: group, on: server))
}
@objc(sendMessage:toGroup:)
public static func objc_sendMessage(_ message: LokiGroupMessage, to group: UInt) -> AnyPromise {
return AnyPromise.from(sendMessage(message, to: group))
@objc(sendMessage:toGroup:onServer:)
public static func objc_sendMessage(_ message: LokiGroupMessage, to group: UInt, on server: String) -> AnyPromise {
return AnyPromise.from(sendMessage(message, to: group, on: server))
}
}

6
SignalServiceKit/src/Messages/OWSMessageSender.m
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@ -501,7 +501,7 @@ NSString *const OWSMessageSenderRateLimitedException = @"RateLimitedException";
if ([message isKindOfClass:[OWSOutgoingSyncMessage class]]) {
[recipientIds addObject:self.tsAccountManager.localNumber];
} else if (thread.isGroupThread) {
[recipientIds addObject:LKGroupChatAPI.serverURL];
[recipientIds addObject:LKGroupChatAPI.publicChatServer];
} else if ([thread isKindOfClass:[TSContactThread class]]) {
NSString *recipientContactId = ((TSContactThread *)thread).contactIdentifier;
@ -1109,12 +1109,12 @@ NSString *const OWSMessageSenderRateLimitedException = @"RateLimitedException";
[self messageSendDidFail:messageSend deviceMessages:deviceMessages statusCode:statusCode error:error responseData:responseData];
};
if ([recipient.recipientId isEqualToString:LKGroupChatAPI.serverURL]) {
if ([recipient.recipientId isEqualToString:LKGroupChatAPI.publicChatServer]) {
NSString *userHexEncodedPublicKey = OWSIdentityManager.sharedManager.identityKeyPair.hexEncodedPublicKey;
NSString *displayName = SSKEnvironment.shared.profileManager.localProfileName;
if (displayName == nil) { displayName = @"Anonymous"; }
LKGroupMessage *groupMessage = [[LKGroupMessage alloc] initWithHexEncodedPublicKey:userHexEncodedPublicKey displayName:displayName body:message.body type:LKGroupChatAPI.publicChatMessageType timestamp:message.timestamp];
[[LKGroupChatAPI sendMessage:groupMessage toGroup:LKGroupChatAPI.publicChatID]
[[LKGroupChatAPI sendMessage:groupMessage toGroup:LKGroupChatAPI.publicChatID onServer:LKGroupChatAPI.publicChatServer]
.thenOn(OWSDispatch.sendingQueue, ^(id result) {
[self messageSendDidSucceed:messageSend deviceMessages:deviceMessages wasSentByUD:false wasSentByWebsocket:false];
})

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