// // NCEndToEndInitialize.swift // Nextcloud // // Created by Marino Faggiana on 03/04/17. // Copyright © 2017 Marino Faggiana. All rights reserved. // // Author Marino Faggiana // // This program is free software: you can redistribute it and/or modify // it under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // // You should have received a copy of the GNU General Public License // along with this program. If not, see . // import Foundation import NCCommunication @objc protocol NCEndToEndInitializeDelegate { func endToEndInitializeSuccess() } class NCEndToEndInitialize : NSObject { @objc weak var delegate: NCEndToEndInitializeDelegate? let appDelegate = UIApplication.shared.delegate as! AppDelegate override init() { } // -------------------------------------------------------------------------------------------- // MARK: Initialize // -------------------------------------------------------------------------------------------- @objc func initEndToEndEncryption() { // Clear all keys CCUtility.clearAllKeysEnd(toEnd: appDelegate.account) self.getPublicKey() } func getPublicKey() { NCCommunication.shared.getE2EEPublicKey { (account, publicKey, errorCode, errorDescription) in if (errorCode == 0 && account == self.appDelegate.account) { CCUtility.setEndToEndPublicKey(account, publicKey: publicKey) // Request PrivateKey chiper to Server self.getPrivateKeyCipher() } else if errorCode != 0 { switch errorCode { case 400: NCContentPresenter.shared.messageNotification("E2E get publicKey", description: "bad request: unpredictable internal error", delay: TimeInterval(k_dismissAfterSecond), type: NCContentPresenter.messageType.error, errorCode: errorCode) case 404: guard let csr = NCEndToEndEncryption.sharedManager().createCSR(self.appDelegate.userID, directory: CCUtility.getDirectoryUserData()) else { NCContentPresenter.shared.messageNotification("E2E Csr", description: "Error to create Csr", delay: TimeInterval(k_dismissAfterSecond), type: NCContentPresenter.messageType.error, errorCode: errorCode) return } NCCommunication.shared.signE2EEPublicKey(publicKey: csr) { (account, publicKey, errorCode, errorDescription) in if (errorCode == 0 && account == self.appDelegate.account) { CCUtility.setEndToEndPublicKey(account, publicKey: publicKey) // Request PrivateKey chiper to Server self.getPrivateKeyCipher() } else if errorCode != 0 { switch errorCode { case 400: NCContentPresenter.shared.messageNotification("E2E sign publicKey", description: "bad request: unpredictable internal error", delay: TimeInterval(k_dismissAfterSecond), type: NCContentPresenter.messageType.error, errorCode: errorCode) case 409: NCContentPresenter.shared.messageNotification("E2E sign publicKey", description: "conflict: a public key for the user already exists", delay: TimeInterval(k_dismissAfterSecond), type: NCContentPresenter.messageType.error, errorCode: errorCode) default: NCContentPresenter.shared.messageNotification("E2E sign publicKey", description: errorDescription, delay: TimeInterval(k_dismissAfterSecond), type: NCContentPresenter.messageType.error, errorCode: errorCode) } } } case 409: NCContentPresenter.shared.messageNotification("E2E get publicKey", description: "forbidden: the user can't access the public keys", delay: TimeInterval(k_dismissAfterSecond), type: NCContentPresenter.messageType.error, errorCode: errorCode) default: NCContentPresenter.shared.messageNotification("E2E get publicKey", description: errorDescription, delay: TimeInterval(k_dismissAfterSecond), type: NCContentPresenter.messageType.error, errorCode: errorCode) } } } } func getPrivateKeyCipher() { // Request PrivateKey chiper to Server NCCommunication.shared.getE2EEPrivateKey { (account, privateKeyChiper, errorCode, errorDescription) in if (errorCode == 0 && account == self.appDelegate.account) { // request Passphrase var passphraseTextField: UITextField? let alertController = UIAlertController(title: NSLocalizedString("_e2e_passphrase_request_title_", comment: ""), message: NSLocalizedString("_e2e_passphrase_request_message_", comment: ""), preferredStyle: .alert) let ok = UIAlertAction(title: "OK", style: .default, handler: { (action) -> Void in let passphrase = passphraseTextField?.text let publicKey = CCUtility.getEndToEndPublicKey(self.appDelegate.account) guard let privateKey = (NCEndToEndEncryption.sharedManager().decryptPrivateKey(privateKeyChiper, passphrase: passphrase, publicKey: publicKey)) else { NCContentPresenter.shared.messageNotification("E2E decrypt privateKey", description: "Serious internal error to decrypt Private Key", delay: TimeInterval(k_dismissAfterSecond), type: NCContentPresenter.messageType.error, errorCode: Int(k_CCErrorInternalError)) return } // privateKey print(privateKey) // Save to keychain CCUtility.setEndToEndPrivateKey(self.appDelegate.account, privateKey: privateKey) CCUtility.setEndToEndPassphrase(self.appDelegate.account, passphrase:passphrase) // request publicKey Server() NCCommunication.shared.getE2EEServerPublicKey { (account, publicKey, errorCode, errorDescription) in if (errorCode == 0 && account == self.appDelegate.account) { CCUtility.setEndToEndPublicKeyServer(account, publicKey: publicKey) // Clear Table NCManageDatabase.sharedInstance.clearTable(tableDirectory.self, account: account) NCManageDatabase.sharedInstance.clearTable(tableE2eEncryption.self, account: account) self.delegate?.endToEndInitializeSuccess() } else if errorCode != 0 { switch (errorCode) { case 400: NCContentPresenter.shared.messageNotification("E2E Server publicKey", description: "bad request: unpredictable internal error", delay: TimeInterval(k_dismissAfterSecond), type: NCContentPresenter.messageType.error, errorCode: errorCode) case 404: NCContentPresenter.shared.messageNotification("E2E Server publicKey", description: "Server publickey doesn't exists", delay: TimeInterval(k_dismissAfterSecond), type: NCContentPresenter.messageType.error, errorCode: errorCode) case 409: NCContentPresenter.shared.messageNotification("E2E Server publicKey", description: "forbidden: the user can't access the Server publickey", delay: TimeInterval(k_dismissAfterSecond), type: NCContentPresenter.messageType.error, errorCode: errorCode) default: NCContentPresenter.shared.messageNotification("E2E Server publicKey", description: errorDescription, delay: TimeInterval(k_dismissAfterSecond), type: NCContentPresenter.messageType.error, errorCode: errorCode) } } } }) let cancel = UIAlertAction(title: "Cancel", style: .cancel) { (action) -> Void in } alertController.addAction(ok) alertController.addAction(cancel) alertController.addTextField { (textField) -> Void in passphraseTextField = textField passphraseTextField?.placeholder = "Enter passphrase (12 words)" } self.appDelegate.window.rootViewController?.present(alertController, animated: true) } else if errorCode != 0 { switch errorCode { case 400: NCContentPresenter.shared.messageNotification("E2E get privateKey", description: "bad request: unpredictable internal error", delay: TimeInterval(k_dismissAfterSecond), type: NCContentPresenter.messageType.error, errorCode: errorCode) case 404: // message let e2ePassphrase = NYMnemonic.generateString(128, language: "english") let message = "\n" + NSLocalizedString("_e2e_settings_view_passphrase_", comment: "") + "\n\n" + e2ePassphrase! let alertController = UIAlertController(title: NSLocalizedString("_e2e_settings_title_", comment: ""), message: NSLocalizedString(message, comment: ""), preferredStyle: .alert) let OKAction = UIAlertAction(title: NSLocalizedString("_ok_", comment: ""), style: .default) { action in var privateKeyString: NSString? guard let privateKeyChiper = NCEndToEndEncryption.sharedManager().encryptPrivateKey(self.appDelegate.userID, directory: CCUtility.getDirectoryUserData(), passphrase: e2ePassphrase, privateKey: &privateKeyString) else { NCContentPresenter.shared.messageNotification("E2E privateKey", description: "Serious internal error to create PrivateKey chiper", delay: TimeInterval(k_dismissAfterSecond), type: NCContentPresenter.messageType.error, errorCode: errorCode) return } // privateKeyChiper print(privateKeyChiper) NCCommunication.shared.storeE2EEPrivateKey(privateKey: privateKeyChiper) { (account, privateKey, errorCode, errorDescription) in if (errorCode == 0 && account == self.appDelegate.account) { CCUtility.setEndToEndPrivateKey(account, privateKey: privateKeyString! as String) CCUtility.setEndToEndPassphrase(account, passphrase: e2ePassphrase) // request publicKey Server() NCCommunication.shared.getE2EEServerPublicKey { (account, publicKey, errorCode, errorDescription) in if (errorCode == 0 && account == self.appDelegate.account) { CCUtility.setEndToEndPublicKeyServer(account, publicKey: publicKey) // Clear Table NCManageDatabase.sharedInstance.clearTable(tableDirectory.self, account: account) NCManageDatabase.sharedInstance.clearTable(tableE2eEncryption.self, account: account) self.delegate?.endToEndInitializeSuccess() } else if errorCode != 0 { switch (errorCode) { case 400: NCContentPresenter.shared.messageNotification("E2E Server publicKey", description: "bad request: unpredictable internal error", delay: TimeInterval(k_dismissAfterSecond), type: NCContentPresenter.messageType.error, errorCode: errorCode) case 404: NCContentPresenter.shared.messageNotification("E2E Server publicKey", description: "Server publickey doesn't exists", delay: TimeInterval(k_dismissAfterSecond), type: NCContentPresenter.messageType.error, errorCode: errorCode) case 409: NCContentPresenter.shared.messageNotification("E2E Server publicKey", description: "forbidden: the user can't access the Server publickey", delay: TimeInterval(k_dismissAfterSecond), type: NCContentPresenter.messageType.error, errorCode: errorCode) default: NCContentPresenter.shared.messageNotification("E2E Server publicKey", description: errorDescription, delay: TimeInterval(k_dismissAfterSecond), type: NCContentPresenter.messageType.error, errorCode: errorCode) } } } } else if errorCode != 0 { switch errorCode { case 400: NCContentPresenter.shared.messageNotification("E2E store privateKey", description: "bad request: unpredictable internal error", delay: TimeInterval(k_dismissAfterSecond), type: NCContentPresenter.messageType.error, errorCode: errorCode) case 409: NCContentPresenter.shared.messageNotification("E2E store privateKey", description: "conflict: a private key for the user already exists", delay: TimeInterval(k_dismissAfterSecond), type: NCContentPresenter.messageType.error, errorCode: errorCode) default: NCContentPresenter.shared.messageNotification("E2E store privateKey", description: errorDescription, delay: TimeInterval(k_dismissAfterSecond), type: NCContentPresenter.messageType.error, errorCode: errorCode) } } } } alertController.addAction(OKAction) self.appDelegate.window.rootViewController?.present(alertController, animated: true) case 409: NCContentPresenter.shared.messageNotification("E2E get privateKey", description: "forbidden: the user can't access the private key", delay: TimeInterval(k_dismissAfterSecond), type: NCContentPresenter.messageType.error, errorCode: errorCode) default: NCContentPresenter.shared.messageNotification("E2E get privateKey", description: errorDescription,delay: TimeInterval(k_dismissAfterSecond), type: NCContentPresenter.messageType.error, errorCode: errorCode) } } } } }