nativescript-security/security.ios.js

Security NativeScript plugin.

"use strict";
var utils = require('utils/utils');
var Security = (function () {
    function Security() {
        this.keychainItemServiceName = null;
        this.keychainItemIdentifier = "TouchIDKey";
    }
    Security.prototype.available = function () {
        return new Promise(function (resolve, reject) {
            try {
                resolve(LAContext.new().canEvaluatePolicyError(LAPolicyDeviceOwnerAuthenticationWithBiometrics, null));
            }
            catch (error) {
                reject(error);
            }
        });
    };
    Security.prototype.verifyFingerPrint = function (args) {
        var _this = this;
        return new Promise(function (resolve, reject) {
            try {
                if (_this.keychainItemServiceName === null) {
                    var bundleID = utils.ios.getter(NSBundle, NSBundle.mainBundle).infoDictionary.objectForKey("CFBundleIdentifier");
                    _this.keychainItemServiceName = bundleID + ".TouchID";
                }
                if (!_this.createKeyChainEntry()) {
                    return;
                }
                var message = "Scan your finger";
                if (args && args.iOSMessage) {
                    message = args.iOSMessage;
                }
                var query = NSMutableDictionary.new();
                query.setObjectForKey(kSecClassGenericPassword, kSecClass);
                query.setObjectForKey(_this.keychainItemIdentifier, kSecAttrAccount);
                query.setObjectForKey(_this.keychainItemServiceName, kSecAttrService);
                query.setObjectForKey(message, kSecUseOperationPrompt);
                var res = SecItemCopyMatching(query, null);
                if (res === 0) {
                    resolve();
                }
                else {
                    reject(res);
                }
            }
            catch (ex) {
                console.log("Error in touchid.verifyFingerprint: " + ex);
                reject(ex);
            }
        });
    };
    Security.prototype.createKeyChainEntry = function () {
        var attributes = NSMutableDictionary.new();
        attributes.setObjectForKey(kSecClassGenericPassword, kSecClass);
        attributes.setObjectForKey(this.keychainItemIdentifier, kSecAttrAccount);
        attributes.setObjectForKey(this.keychainItemServiceName, kSecAttrService);
        var accessControlRef = SecAccessControlCreateWithFlags(kCFAllocatorDefault, kSecAttrAccessibleWhenUnlockedThisDeviceOnly, kSecAccessControlUserPresence, null);
        if (accessControlRef === null) {
            console.log("Can't store identifier '" + this.keychainItemIdentifier + "' in the KeyChain");
            return false;
        }
        else {
            attributes.setObjectForKey(accessControlRef, kSecAttrAccessControl);
            attributes.setObjectForKey(1, kSecUseNoAuthenticationUI);
            var htmlString = NSString.stringWithString("dummy content");
            var nsData = htmlString.dataUsingEncoding(NSUTF8StringEncoding);
            attributes.setObjectForKey(nsData, kSecValueData);
            SecItemAdd(attributes, null);
            return true;
        }
    };
    return Security;
}());
exports.Security = Security;
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