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website/functions/node_modules/firebase-admin/lib/utils/validator.js

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+/*! firebase-admin v6.0.0 */
+"use strict";
+/*!
+ * Copyright 2017 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+Object.defineProperty(exports, "__esModule", { value: true });
+var url = require("url");
+/**
+ * Validates that a value is a byte buffer.
+ *
+ * @param {any} value The value to validate.
+ * @return {boolean} Whether the value is byte buffer or not.
+ */
+function isBuffer(value) {
+    return value instanceof Buffer;
+}
+exports.isBuffer = isBuffer;
+/**
+ * Validates that a value is an array.
+ *
+ * @param {any} value The value to validate.
+ * @return {boolean} Whether the value is an array or not.
+ */
+function isArray(value) {
+    return Array.isArray(value);
+}
+exports.isArray = isArray;
+/**
+ * Validates that a value is a non-empty array.
+ *
+ * @param {any} value The value to validate.
+ * @return {boolean} Whether the value is a non-empty array or not.
+ */
+function isNonEmptyArray(value) {
+    return isArray(value) && value.length !== 0;
+}
+exports.isNonEmptyArray = isNonEmptyArray;
+/**
+ * Validates that a value is a boolean.
+ *
+ * @param {any} value The value to validate.
+ * @return {boolean} Whether the value is a boolean or not.
+ */
+function isBoolean(value) {
+    return typeof value === 'boolean';
+}
+exports.isBoolean = isBoolean;
+/**
+ * Validates that a value is a number.
+ *
+ * @param {any} value The value to validate.
+ * @return {boolean} Whether the value is a number or not.
+ */
+function isNumber(value) {
+    return typeof value === 'number' && !isNaN(value);
+}
+exports.isNumber = isNumber;
+/**
+ * Validates that a value is a string.
+ *
+ * @param {any} value The value to validate.
+ * @return {boolean} Whether the value is a string or not.
+ */
+function isString(value) {
+    return typeof value === 'string';
+}
+exports.isString = isString;
+/**
+ * Validates that a value is a non-empty string.
+ *
+ * @param {any} value The value to validate.
+ * @return {boolean} Whether the value is a non-empty string or not.
+ */
+function isNonEmptyString(value) {
+    return isString(value) && value !== '';
+}
+exports.isNonEmptyString = isNonEmptyString;
+/**
+ * Validates that a value is a nullable object.
+ *
+ * @param {any} value The value to validate.
+ * @return {boolean} Whether the value is an object or not.
+ */
+function isObject(value) {
+    return typeof value === 'object' && !isArray(value);
+}
+exports.isObject = isObject;
+/**
+ * Validates that a value is a non-null object.
+ *
+ * @param {any} value The value to validate.
+ * @return {boolean} Whether the value is a non-null object or not.
+ */
+function isNonNullObject(value) {
+    return isObject(value) && value !== null;
+}
+exports.isNonNullObject = isNonNullObject;
+/**
+ * Validates that a string is a valid Firebase Auth uid.
+ *
+ * @param {any} uid The string to validate.
+ * @return {boolean} Whether the string is a valid Firebase Auth uid.
+ */
+function isUid(uid) {
+    return typeof uid === 'string' && uid.length > 0 && uid.length <= 128;
+}
+exports.isUid = isUid;
+/**
+ * Validates that a string is a valid Firebase Auth password.
+ *
+ * @param {any} password The password string to validate.
+ * @return {boolean} Whether the string is a valid Firebase Auth password.
+ */
+function isPassword(password) {
+    // A password must be a string of at least 6 characters.
+    return typeof password === 'string' && password.length >= 6;
+}
+exports.isPassword = isPassword;
+/**
+ * Validates that a string is a valid email.
+ *
+ * @param {any} email The string to validate.
+ * @return {boolean} Whether the string is valid email or not.
+ */
+function isEmail(email) {
+    if (typeof email !== 'string') {
+        return false;
+    }
+    // There must at least one character before the @ symbol and another after.
+    var re = /^[^@]+@[^@]+$/;
+    return re.test(email);
+}
+exports.isEmail = isEmail;
+/**
+ * Validates that a string is a valid phone number.
+ *
+ * @param {any} phoneNumber The string to validate.
+ * @return {boolean} Whether the string is a valid phone number or not.
+ */
+function isPhoneNumber(phoneNumber) {
+    if (typeof phoneNumber !== 'string') {
+        return false;
+    }
+    // Phone number validation is very lax here. Backend will enforce E.164
+    // spec compliance and will normalize accordingly.
+    // The phone number string must be non-empty and starts with a plus sign.
+    var re1 = /^\+/;
+    // The phone number string must contain at least one alphanumeric character.
+    var re2 = /[\da-zA-Z]+/;
+    return re1.test(phoneNumber) && re2.test(phoneNumber);
+}
+exports.isPhoneNumber = isPhoneNumber;
+/**
+ * Validates that a string is a valid web URL.
+ *
+ * @param {any} urlStr The string to validate.
+ * @return {boolean} Whether the string is valid web URL or not.
+ */
+function isURL(urlStr) {
+    if (typeof urlStr !== 'string') {
+        return false;
+    }
+    // Lookup illegal characters.
+    var re = /[^a-z0-9\:\/\?\#\[\]\@\!\$\&\'\(\)\*\+\,\;\=\.\-\_\~\%]/i;
+    if (re.test(urlStr)) {
+        return false;
+    }
+    try {
+        var uri = url.parse(urlStr);
+        var scheme = uri.protocol;
+        var slashes = uri.slashes;
+        var hostname = uri.hostname;
+        var pathname = uri.pathname;
+        if ((scheme !== 'http:' && scheme !== 'https:') || !slashes) {
+            return false;
+        }
+        // Validate hostname: Can contain letters, numbers, underscore and dashes separated by a dot.
+        // Each zone must not start with a hyphen or underscore.
+        if (!/^[a-zA-Z0-9]+[\w\-]*([\.]?[a-zA-Z0-9]+[\w\-]*)*$/.test(hostname)) {
+            return false;
+        }
+        // Allow for pathnames: (/chars+)*/?
+        // Where chars can be a combination of: a-z A-Z 0-9 - _ . ~ ! $ & ' ( ) * + , ; = : @ %
+        var pathnameRe = /^(\/[\w\-\.\~\!\$\'\(\)\*\+\,\;\=\:\@\%]+)*\/?$/;
+        // Validate pathname.
+        if (pathname &&
+            pathname !== '/' &&
+            !pathnameRe.test(pathname)) {
+            return false;
+        }
+        // Allow any query string and hash as long as no invalid character is used.
+    }
+    catch (e) {
+        return false;
+    }
+    return true;
+}
+exports.isURL = isURL;
+/**
+ * Validates that the provided topic is a valid FCM topic name.
+ *
+ * @param {any} topic The topic to validate.
+ * @return {boolean} Whether the provided topic is a valid FCM topic name.
+ */
+function isTopic(topic) {
+    if (typeof topic !== 'string') {
+        return false;
+    }
+    var VALID_TOPIC_REGEX = /^(\/topics\/)?(private\/)?[a-zA-Z0-9-_.~%]+$/;
+    return VALID_TOPIC_REGEX.test(topic);
+}
+exports.isTopic = isTopic;