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ampbench_lib.js
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ampbench_lib.js
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// Copyright 2015-2016, 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.
'use strict';
// @ts-check
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// imports
//
const os = require('os');
// const http = require('http');
// const https = require('https');
const crypto = require('crypto');
const fs = require('fs');
const http = require('follow-redirects').http;
const https = require('follow-redirects').https;
require('follow-redirects').maxRedirects = 15; // 3X the default!!! we want to know when there *really* is many
const url = require('url');
const request = require('request');
const fetch = require('node-fetch');
// https://github.com/wdavidw/node-http-status/blob/master/lib/index.js
const http_status = require('http-status');
const valid_url = require('valid-url');
// https://www.npmjs.com/package/wget-improved
const wget = require('wget-improved');
const robots_parser = require('robots-parser');
const util = require('util');
const inspect_obj = (obj) => {return util.inspect(obj, { showHidden: true, depth: null });};
const cheerio = require('cheerio');
const S = require('string');
const hasBom = require('has-bom');
// const {URL} = require('url');
const URL = require('url-parse');
const mime = require('mime-types');
const punycode = require('punycode');
const createCacheUrl = require('amp-toolbox-cache-url');
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// convenient aliases
//
const puts = console.log;
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// HTTP response class
//
class HttpResponse {
constructor(url) {
this._url = null;
this._url_error = '';
this._is_https = null;
this._http_client = null;
this._stamp_on_begin = 0;
this._stamp_on_end = 0;
this._response = null;
this._http_response_code = 0;
this._http_response_text = '';
this._http_response_body = '';
this._redirects_count = 0;
this._redirects_urls = [];
this.is_https_cert_authorized = null;
this.is_https_cert_certificate = null;
this._is_https_cert_ssl_error = '';
/** @type {CheerioStatic} */
this._$ = null;
if (url) {
this._url = url;
if (check_url_is_valid(this._url)) {
this._url_error = ''; // url seems ok
} else {
this._url_error =
'URL Error: URL string appears invalid or malformed';
}
if (this._url.indexOf('http://') === 0 ||
this._url.indexOf('https://') === 0) {
// protocol seems OK
// this._url = str_rtrim_char(this._url, '/'); // ignore trailing slashes //TODO: PROBLEMATIC
} else {
this._url_error =
'URL Error: no valid transport protocol was found in the URL string';
}
this._is_https = (url.indexOf('https://') === 0);
this._http_client = (this._is_https) ? https : http;
} else {
this._url_error =
'URL Error: URL string appears blank, invalid or malformed';
}
}
setResponse(res) {
if (res) {
this._stamp_on_begin = new Date(); // set beginning timestamp
this._response = res;
this._http_response_code = res.statusCode;
this._http_response_text = 'HTTP Status: ' + res.statusCode + ' - ' + http_status[res.statusCode];
try { // best attempt at getting SSL cert info
this._redirects_count = res.fetchedUrls.length;
this._redirects_urls = res.fetchedUrls;
} catch (err) { /* pass: as a rule we want to avoid breaking */ }
if (this.statusIsOK()) {
if (this.is_https) {
try { // best attempt at getting SSL cert info - as a rule we want to avoid breaking
this.is_https_cert_authorized = res.socket.authorized;
this.is_https_cert_certificate = res.socket.getPeerCertificate();
} catch (err) { /* pass: as a rule we want to avoid breaking */ }
}
}
} else {
this._url_error =
'Response Error: HttpResponse setResponse(res) requires a valid HTTP Response parameter: this was not supplied or is invalid';
}
}
setResponseEnded() { // tel us when the response ended delivering content
this._stamp_on_end = new Date(); // set ending timestamp
}
get duration_in_milliseconds() {
return this._stamp_on_end - this._stamp_on_begin;
}
get response() {
return this._response;
}
get url() { // read-only - can only be set during instantiation!
return this._url;
}
get url_error() { // read-only - can only be set during instantiation!
return this._url_error;
}
get is_https() { // read-only!
return this._is_https;
}
get http_client() { // read-only - set during instantiation!
return this._http_client;
}
get http_response_code() {
return this._http_response_code;
}
get http_response_text() { // read-only - set in http_response_code()!
return this._http_response_text;
}
get http_response_body() {
return this._http_response_body;
}
get $() {
if (!this._$) {
if (this.http_response_body) {
this._$ = cheerio.load(this.http_response_body);
} else {
this._$ = cheerio.load('');
}
}
return this._$;
}
set http_response_body(body) {
if (body) {
this._http_response_body = body;
}
}
get redirects_count() { // read-only!
return this._redirects_count;
}
get redirects_urls() { // read-only!
return this._redirects_urls;
}
get is_https_cert_ssl_error() {
return this._is_https_cert_ssl_error;
}
set is_https_cert_ssl_error(err) {
if (err) {
if ('DEPTH_ZERO_SELF_SIGNED_CERT' === err.code) {
// "[Error: self signed certificate[DEPTH_ZERO_SELF_SIGNED_CERT]]"
// We probably want to know this, so maybe do *not* set the following?
// .. process.env.NODE_TLS_REJECT_UNAUTHORIZED = "0";
this.is_https_cert_authorized = false;
// Force a 403: https://en.wikipedia.org/wiki/HTTP_403 ???
// this._http_response_code = 403;
this._http_response_text = 'Server SSL Certificate rejected';
}
this._is_https_cert_ssl_error = err.toString() + '[' + err.code + ']';
this._http_response_text += '[' + this._is_https_cert_ssl_error + ']';
}
}
urlIsOK() {
return ('' === this.url_error);
}
urlIsGoogleAmpFeed() {
return (-1 < this.url.indexOf('googleusercontent.com/amphtml'));
}
statusIsOK() {
return (200 == this.http_response_code);
}
bodyIsNotEmpty() {
return ('' !== this.http_response_body.trim());
}
wasRedirected() {
return (1 < this.redirects_count);
}
print() {
puts('=> url : ' + this.url);
puts('=> url_error : ' + this.url_error);
puts('=> is_https : ' + this.is_https);
puts('=> http_response_code : ' + this.http_response_code);
puts('=> http_response_text : ' + this.http_response_text);
puts('=> duration_in_milliseconds : ' + this.duration_in_milliseconds);
puts('=> wasRedirected : ' + this.wasRedirected());
puts('=> redirects_count : ' + this.redirects_count);
puts('=> redirects_urls :\n' + this.redirects_urls.join('\n'));
// puts('=> redirects_urls (inspect) : ' + util.inspect(this.redirects_urls));
puts('=> is_https_cert_authorized : ' + this.is_https_cert_authorized);
puts('=> is_https_cert_ssl_error : ' + this.is_https_cert_ssl_error);
}
printWithBody() {
this.print();
puts('=> http_response_body :\n' + this.http_response_body);
}
printWithCert() {
this.print();
puts('=> is_https_cert_certificate:\n' + util.inspect(this.is_https_cert_certificate));
}
printWithResponse() {
this.print();
puts('=> response:\n' + util.inspect(this._response));
}
printInspect() {
puts('=> HttpResponse:\n' + util.inspect(this));
}
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// app validation check status constants
//
const
CHECK_FAIL = 'FAIL',
CHECK_PASS = 'PASS',
CHECK_INFO = 'INFO',
CHECK_WARN = 'WARNING',
CHECK_NONE = 'UNKNOWN';
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// HTTP User Agent constants
// https://support.google.com/webmasters/answer/1061943?hl=en
// https://developer.chrome.com/multidevice/user-agent
// https://webmasters.googleblog.com/2016/03/updating-smartphone-user-agent-of.html
// https://deviceatlas.com/blog/list-of-user-agent-strings
// https://deviceatlas.com/blog/list-of-web-crawlers-user-agents
//
// desktop + server-side CURL
const UA_CURL = 'curl/7.43.0'; //!!! we use this User-Agent for non-crawler Googlebots
// mobile
const UA_MOBILE_ANDROID_CHROME_52 =
'Mozilla/5.0 (Linux; Android 6.0; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/52.0.2725.0 Mobile Safari/537.36';
const UA_MOBILE_IPHONE_CHROME_52 =
'Mozilla/5.0 (iPhone; CPU iPhone OS 9_1 like Mac OS X) AppleWebKit/601.1 (KHTML, like Gecko) CriOS/52.0.2725.0 Mobile/13B143 Safari/601.1.46';
const UA_MOBILE_IPHONE_SAFARI =
'Mozilla/5.0 (iPhone; CPU iPhone OS 9_1 like Mac OS X) AppleWebKit/601.1.46 (KHTML, like Gecko) Version/9.0 Mobile/13B137 Safari/601.1';
// googlebot search crawlers
const UA_GOOGLEBOT =
'Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)';
const UA_GOOGLEBOT_SMARTPHONE =
'Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.96 Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)';
// user agent currently in use - - - - - - - - - - - - - - - - - - - - - - - - -
var UA_AMPBENCH = UA_MOBILE_ANDROID_CHROME_52;
var UA_AMPBENCH_NAME = 'UA_MOBILE_ANDROID_CHROME_52';
function set_global_user_agent(user_agent) {
UA_AMPBENCH = user_agent;
}
function get_global_user_agent() {
return UA_AMPBENCH;
}
function set_global_user_agent_name(user_agent_name) {
UA_AMPBENCH_NAME = user_agent_name;
}
function get_global_user_agent_name() {
return UA_AMPBENCH_NAME;
}
// const UA_AMPBENCH = UA_CURL;
// const UA_AMPBENCH_NAME = 'UA_CURL';
// const UA_AMPBENCH = UA_GOOGLEBOT_SMARTPHONE;
// const UA_AMPBENCH_NAME = 'UA_GOOGLEBOT_SMARTPHONE';
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// HTTP response content inspector
//
class HttpBodySniffer {
constructor(url, body) {
// print_dashes(60);
// console.log('=> HttpBodySniffer:constructor: ');
// console.log('=> -- url : ' + url);
// console.log('=> -- body: [' + body.substr(0,50) + '...]');
this.isValidForUse = false; // is the sniffer in a usable state - NOT in the case of bad HTTP responses!
if (!url || !body || '' === url || '' === body) {
this.isValidForUse = false; // is the sniffer in a usable state - NOT in the case of bad HTTP responses!
} else {
this.isValidForUse = true;
this._url = url;
this._body = body;
this._amphtml_rel_index = this._body.indexOf('rel="amphtml"');
this._canonical_rel_index = this._body.indexOf('rel="canonical"');
this._contains = {
amphtml_signature:
S(this._body).contains('<html ⚡') || S(this._body).contains(' ⚡>') ||
S(this._body).contains('<html amp') || S(this._body).contains('<html AMP') ||
S(this._body).contains(' amp>') || S(this._body).contains(' AMP>') ||
S(this._body).contains(' amp=') || S(this._body).contains(' AMP='),
amphtml_link:
S(this._body).contains('link rel="amphtml"'),
amphtml_link2:
S(this._body).contains(' rel="amphtml" href='),
amphtml_link3:
S(this._body).contains(' rel="amphtml"'),
canonical_link:
S(this._body).contains('link rel="canonical"'),
canonical_link2:
S(this._body).contains(' rel="canonical"'),
canonical_link3:
S(this._body).contains(' rel="canonical" href='),
amphtml_runtime:
S(this._body).contains('src="https://cdn.ampproject.org/v0.js"')
};
this._amphtml_href = this._contains.amphtml_link
? S(this._body).between('link rel="amphtml" href=', '>').s
: '';
this._amphtml_href2 = this._contains.amphtml_link2
? S(this._body).between(' rel="amphtml" href=', '>').s
: '';
this._amphtml_href3 = this._contains.amphtml_link3
? S(this._body).between(' href=', ' rel="amphtml"').s
: '';
this._canonical_href = this._contains.canonical_link
? S(this._body).between('link rel="canonical" href=', '>').s
: '';
this._canonical_href2 = this._contains.canonical_link2
? S(this._body).between(' rel="canonical" href=', '>').s
: '';
this._canonical_href3 = this._contains.canonical_link3
? S(this._body).between(' href=', ' rel="canonical"').s
: '';
this._json_ld_script_raw = this.bodyContains('type="application/ld+json"')
? S(this._body).between('type="application/ld+json">', '</script>').s
: '';
this._json_ld_script = S(this._json_ld_script_raw).strip(' ', os.EOL);
this._contains_sd = {
// AMP_SD_TYPES = ['Article', 'NewsArticle', 'BlogPosting', 'VideoObject'],
// - - look for json-ld: https://developers.google.com/schemas/formats/json-ld - -
json_ld: '' !== this._json_ld_script,
json_ld_schema_org:
this.bodyContains('"@context"') && (
this.bodyContains('"http://schema.org/"') ||
this.bodyContains('"https://schema.org/"') ),
jsonld_type: {
Article:
this.bodyContains('"@type":"Article"') ||
this.jsonldScriptContains('"@type":"Article"'),
NewsArticle:
this.bodyContains('"@type":"NewsArticle"') ||
this.jsonldScriptContains('"@type":"NewsArticle"'),
BlogPosting:
this.bodyContains('"@type":"BlogPosting"') ||
this.jsonldScriptContains('"@type":"BlogPosting"'),
WebPage:
this.bodyContains('"@type":"WebPage"') ||
this.jsonldScriptContains('"@type":"WebPage"'),
Organization:
this.bodyContains('"@type":"Organization"') ||
this.jsonldScriptContains('"@type":"Organization"'),
ImageObject:
this.bodyContains('"@type":"ImageObject"') ||
this.jsonldScriptContains('"@type":"ImageObject"'),
VideoObject:
this.bodyContains('"@type":"VideoObject"') ||
this.jsonldScriptContains('"@type":"VideoObject"')
},
// - - look for microdata: https://developers.google.com/schemas/formats/microdata - -
microdata: S(this._body).contains(' itemprop='),
microdata_schema_org:
this.bodyContains('itemtype="http://schema.org') ||
this.bodyContains('itemtype="https://schema.org'),
microdata_type: {
Article:
this.bodyContains('itemtype="http://schema.org/Article"') ||
this.bodyContains('itemtype="https://schema.org/Article"'),
NewsArticle:
this.bodyContains('itemtype="http://schema.org/NewsArticle"') ||
this.bodyContains('itemtype="https://schema.org/NewsArticle"'),
BlogPosting:
this.bodyContains('itemtype="http://schema.org/BlogPosting"') ||
this.bodyContains('itemtype="https://schema.org/BlogPosting"'),
WebPage:
this.bodyContains('itemtype="http://schema.org/WebPage"') ||
this.bodyContains('itemtype="https://schema.org/WebPage"'),
Organization:
this.bodyContains('itemtype="http://schema.org/Organization"') ||
this.bodyContains('itemtype="https://schema.org/Organization"'),
ImageObject:
this.bodyContains('itemtype="http://schema.org/ImageObject"') ||
this.bodyContains('itemtype="https://schema.org/ImageObject"'),
VideoObject:
this.bodyContains('itemtype="http://schema.org/VideoObject"') ||
this.bodyContains('itemtype="https://schema.org/VideoObject"')
}
};
this._jsonld_type_is_amp_news_carousel_main =
this._contains_sd.jsonld_type.Article ||
this._contains_sd.jsonld_type.NewsArticle ||
this._contains_sd.jsonld_type.BlogPosting ||
this._contains_sd.jsonld_type.VideoObject;
this._jsonld_type_is_amp_news_carousel_support =
this._contains_sd.jsonld_type.WebPage ||
this._contains_sd.jsonld_type.Organization ||
this._contains_sd.jsonld_type.ImageObject;
this._jsonld_type_is_amp_news_carousel =
this._jsonld_type_is_amp_news_carousel_main &&
this._jsonld_type_is_amp_news_carousel_support;
this._microdata_type_is_amp_news_carousel_main =
this._contains_sd.microdata_type.Article ||
this._contains_sd.microdata_type.NewsArticle ||
this._contains_sd.microdata_type.BlogPosting ||
this._contains_sd.microdata_type.VideoObject;
this._microdata_type_is_amp_news_carousel_support =
this._contains_sd.microdata_type.WebPage ||
this._contains_sd.microdata_type.Organization ||
this._contains_sd.microdata_type.ImageObject;
this._microdata_type_is_amp_news_carousel =
this._microdata_type_is_amp_news_carousel_main &&
this._microdata_type_is_amp_news_carousel_support;
this._sd_type_is_amp_news_carousel_main =
this._jsonld_type_is_amp_news_carousel_main ||
this._microdata_type_is_amp_news_carousel_main;
this._sd_type_is_amp_news_carousel_support =
this._jsonld_type_is_amp_news_carousel_support ||
this._microdata_type_is_amp_news_carousel_support;
this._sd_type_is_amp_news_carousel_main_without_support =
this._sd_type_is_amp_news_carousel_main &&
!this._sd_type_is_amp_news_carousel_support;
this._sd_type_is_amp_news_carousel_support_without_main =
!this._sd_type_is_amp_news_carousel_main &&
this._sd_type_is_amp_news_carousel_support;
this._sd_type_is_amp_news_carousel =
this._jsonld_type_is_amp_news_carousel ||
this._microdata_type_is_amp_news_carousel;
this._sd_amp_types_found_string = ''
+ ( this._contains_sd.jsonld_type.Article
? ' Article (JSON-LD)' : '' )
+ ( this._contains_sd.microdata_type.Article
? ' Article (Microdata)' : '' )
+ ( this._contains_sd.jsonld_type.NewsArticle
? ' NewsArticle (JSON-LD)' : '' )
+ ( this._contains_sd.microdata_type.NewsArticle
? ' NewsArticle (Microdata)' : '' )
+ ( this._contains_sd.jsonld_type.BlogPosting
? ' BlogPosting (JSON-LD)' : '' )
+ ( this._contains_sd.microdata_type.BlogPosting
? ' BlogPosting (Microdata)' : '' )
+ ( this._contains_sd.jsonld_type.WebPage
? ' WebPage (JSON-LD)' : '' )
+ ( this._contains_sd.microdata_type.WebPage
? ' WebPage (Microdata)' : '' )
+ ( this._contains_sd.jsonld_type.Organization
? ' Organization (JSON-LD)' : '' )
+ ( this._contains_sd.microdata_type.Organization
? ' Organization (Microdata)' : '' )
+ ( this._contains_sd.jsonld_type.ImageObject
? ' ImageObject (JSON-LD)' : '' )
+ ( this._contains_sd.microdata_type.ImageObject
? ' ImageObject (Microdata)' : '' )
+ ( this._contains_sd.jsonld_type.VideoObject
? ' VideoObject (JSON-LD)' : '' )
+ ( this._contains_sd.microdata_type.VideoObject
? ' VideoObject (Microdata)' : '' );
this._sd_amp_carousel_types_found_string = ''
+ ( this._contains_sd.jsonld_type.Article
? ' Article (JSON-LD)' : '' )
+ ( this._contains_sd.microdata_type.Article
? ' Article (Microdata)' : '' )
+ ( this._contains_sd.jsonld_type.NewsArticle
? ' NewsArticle (JSON-LD)' : '' )
+ ( this._contains_sd.microdata_type.NewsArticle
? ' NewsArticle (Microdata)' : '' )
+ ( this._contains_sd.jsonld_type.BlogPosting
? ' BlogPosting (JSON-LD)' : '' )
+ ( this._contains_sd.microdata_type.BlogPosting
? ' BlogPosting (Microdata)' : '' )
+ ( this._contains_sd.jsonld_type.VideoObject
? ' VideoObject (JSON-LD)' : '' )
+ ( this._contains_sd.microdata_type.VideoObject
? ' VideoObject (Microdata)' : '' );
this._contains_byte_order_mark = hasBom(this._body);
}
}
get url() { // read-only - can only be set during instantiation!
if (this.isValidForUse) {
return this._url;
} else {
return '';
}
}
get body() { // read-only - can only be set during instantiation!
if (this.isValidForUse) {
return this._body;
} else {
return '';
}
}
get amphtmlRelIndex() {
if (this.isValidForUse) {
return this._amphtml_rel_index;
} else {
return -1;
}
}
get amphtmlRel() {
if (this.isValidForUse && 0 < this.amphtmlRelIndex) {
return this._body.substr(this.amphtmlRelIndex - 150, 300);
} else {
return '';
}
}
get canonicalRelIndex() {
if (this.isValidForUse) {
return this._canonical_rel_index;
} else {
return -1;
}
}
get canonicalRel() {
if (this.isValidForUse && 0 < this.canonicalRelIndex) {
return this._body.substr(this.canonicalRelIndex - 150, 300);
} else {
return '';
}
}
bodyContains(text) {
if (this.isValidForUse) {
return S(this._body).contains(text);
} else {
return false;
}
}
jsonldScriptContains(text) {
if (this.isValidForUse && '' !== this._json_ld_script) {
return S(this._json_ld_script).contains(text);
} else {
return false;
}
}
get contains() { // has child fields so throw error if not valid
if (this.isValidForUse) {
return this._contains;
} else {
throw 'ERROR: HttpBodySniffer is not valid for use'; // eslint-disable-line no-throw-literal
}
}
get containsAmpHtmlSignature() {
if (this.isValidForUse) {
return this._contains.amphtml_signature;
} else {
return false;
}
}
get containsAmpHtmlLink() {
if (this.isValidForUse) {
return this._contains.amphtml_link || this._contains.amphtml_link2 || this._contains.amphtml_link3;
} else {
return false;
}
}
get containsCanonicalLink() {
// console.log('=> canonicalLink:_contains.canonical_link : ' + this._contains.canonical_link);
// console.log('=> canonicalLink:_contains.canonical_link2: ' + this._contains.canonical_link2);
// console.log('=> canonicalLink:_contains.canonical_link3: ' + this._contains.canonical_link3);
if (this.isValidForUse) {
return this._contains.canonical_link || this._contains.canonical_link2 || this._contains.canonical_link3;
} else {
return false;
}
}
get amphtmlLink() {
console.log('=> amphtmlLink:_amphtml_href : ' + this._amphtml_href.substr(0,256).trim());
console.log('=> amphtmlLink:_amphtml_href2: ' + this._amphtml_href2.substr(0,256).trim());
console.log('=> amphtmlLink:_amphtml_href3: ' + this._amphtml_href3.substr(0,256).trim());
if (this.isValidForUse) {
if (this._contains.amphtml_link3) {
return this._amphtml_href3.substr(0, 256).trim();
} else if (this._contains.amphtml_link2) {
return this._amphtml_href2.substr(0, 256).trim();
} else if (this._contains.amphtml_link) {
return this._amphtml_href.substr(0, 256).trim();
} else {return '';}
}
return '';
}
get canonicalLink() {
// console.log('=> canonicalLink:_canonical_href : ' + this._canonical_href.substr(0,256).trim());
// console.log('=> canonicalLink:_canonical_href2: ' + this._canonical_href2.substr(0,256).trim());
// console.log('=> canonicalLink:_canonical_href3: ' + this._canonical_href3.substr(0,256).trim());
if (this.isValidForUse) {
if (this._contains.canonical_link3) {
return this._canonical_href3.substr(0, 256).trim();
} else if (this._contains.canonical_link2) {
return this._canonical_href2.substr(0, 256).trim();
} else if (this._contains.canonical_link) {
return this._canonical_href.substr(0, 256).trim();
} else {return '';}
}
return '';
}
get containsJsonLd() {
return this.isValidForUse ?
this._contains_sd.json_ld_schema_org || this._contains_sd.json_ld :
false;
}
get jsonLdTypeIsAmp() {
return this.isValidForUse ?
this._jsonld_type_is_amp_news_carousel :
false;
}
get jsonLdTypeIsAmpCarousel() {
return this.isValidForUse ?
this._jsonld_type_is_amp_news_carousel_main :
false;
}
get containsMicroData() {
return this.isValidForUse ?
this._contains_sd.microdata_schema_org || this._contains_sd.microdata :
false;
}
get microdataTypeIsAmp() {
return this.isValidForUse ?
this._microdata_type_is_amp_news_carousel :
false;
}
get microdataTypeIsAmpCarousel() {
return this.isValidForUse ?
this._microdata_type_is_amp_news_carousel_main :
false;
}
get containsMixedStructuredDataMarkup() {
let _ret = {
status: false,
result: ''
};
if (this.isValidForUse) {
_ret.status = this.containsJsonLd && this.containsMicroData;
_ret.result = _ret.status
? 'Page contains Structured Data for more than one markup format (this might include non-AMP relevant items)'
: 'Page Structured Data markup appears to be of a single format';
}
return _ret;
}
get containsAmpStructuredData() {
return this.isValidForUse ?
this.jsonLdTypeIsAmp || this.microdataTypeIsAmp :
false;
}
get containsAmpCarouselStructuredData() {
return this.isValidForUse ?
this.jsonLdTypeIsAmpCarousel || this.microdataTypeIsAmpCarousel :
false;
}
get containsIncompleteAmpCarouselStructuredData() {
// SD for one of the following is missing: Article || NewsArticle || BlogPosting || VideoObject
let _ret = {
status: false,
result: ''
};
if (this.isValidForUse) {
if (this.containsAmpStructuredData && !this.containsAmpCarouselStructuredData) {
_ret.status = true;
_ret.result = 'contains AMP Structured Data: is missing AMP Carousel supporting Structured Data: ';
}
if (!this.containsAmpStructuredData && !this.containsAmpCarouselStructuredData) {
_ret.status = true;
_ret.result = 'is missing AMP Structured Data: is missing AMP Carousel supporting Structured Data: ';
}
_ret.result = _ret.status
? _ret.result + 'Page might contain incomplete Top Stories Carousel for AMP markup'
: _ret.result + 'Page appears to contain complete Top Stories Carousel for AMP markup';
}
// console.log('=> this.containsIncompleteAmpCarouselStructuredData: ' + _ret.status);
// console.log('=> this.containsAmpStructuredData : ' + this.containsAmpStructuredData);
// console.log('=> this.containsAmpCarouselStructuredData : ' + this.containsAmpCarouselStructuredData);
return _ret;
}
get ampStructuredDataTypesFound() {
return this.isValidForUse ?
this._sd_amp_types_found_string :
false;
}
get ampCarouselStructuredDataTypesFound() {
return this.isValidForUse ?
this._sd_amp_carousel_types_found_string :
false;
}
get containsAmpNewsCarouselStructuredDataTypeMain() {
return this.isValidForUse ?
this._sd_type_is_amp_news_carousel_main :
false;
}
get containsAmpNewsCarouselStructuredDataTypeSupport() {
return this.isValidForUse ?
this._sd_type_is_amp_news_carousel_support :
false;
}
get containsAmpNewsCarouselStructuredDataTypeMainWithoutSupport() {
return this.isValidForUse ?
this._sd_type_is_amp_news_carousel_main_without_support :
false;
}
get containsAmpNewsCarouselStructuredDataTypeSupportWithoutMain() {
return this.isValidForUse ?
this._sd_type_is_amp_news_carousel_support_without_main :
false;
}
get containsByteOrderMark() {
return this.isValidForUse ?
this._contains_byte_order_mark :
false;
}
}
class HttpBodyParser extends HttpBodySniffer {
constructor(url, body) {
super(url, body);
this._index_of_search = -1;
}
bodyContains(search_text) { // override super method
if (this.isValidForUse) {
this._index_of_search = this._body.indexOf(search_text);
return (-1 < this._index_of_search);
} else {
throw 'ERROR: HttpBodyParser instance is not valid for use'; // eslint-disable-line no-throw-literal
}
}
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// AMP validator: Official Node.js API
// https://github.com/ampproject/amphtml/tree/master/validator/nodejs#nodejs-api-beta
//
// Latest AMP cached validator from: 'https://cdn.ampproject.org/v0/validator.js'
// https://github.com/ampproject/amphtml/blob/master/validator/nodejs/index.js
// https://github.com/ampproject/amphtml/blob/master/validator/nodejs/index.js#L286
const VALIDATOR_JS_URL = 'https://cdn.ampproject.org/v0/validator.js';
const VALIDATOR_JS_FILE = './validator/validator.js';
const amphtml_validator = require('amphtml-validator');
var amphtml_validator_instance = null; // cache the instance
// The signature for the validator.js file that this module is currently using.
// This gets updated in sync with amphtml_validator_instance.
var amphtml_validator_signature = '*unavailable*';
function lib_amphtml_validator_signature() {
return amphtml_validator_signature;
}
// Computes a SHA256 signature, which is what you'd get if you were to
// run the sha256sum Linux command on the validator.js file. This is used to
// distinguish releases of the validator.js file.
function lib_extract_validator_signature(validator_js_contents) {
return crypto.createHash('sha256').update(validator_js_contents).digest('hex');
}
function lib_fetch_cdn_validator_signature(callback) {
fetch(VALIDATOR_JS_URL)
.then(function(res) {
return res.text();
}).then(function(validator_js_contents) {
callback(lib_extract_validator_signature(validator_js_contents));
});
}
/**
* Loads the AMPHTML JavaScript validator as per 'https://cdn.ampproject.org/v0/validator.js'
* @returns {!Object} validatorInstance
*/
function lib_load_validator(opt_force_reload) {
let _force_reload = opt_force_reload || false;
if (!_force_reload && amphtml_validator_instance !== null) {
return amphtml_validator_instance;
}
// amphtml_validator_instance is a module level global, so we cache it and will
// return it unless opt_force_reload is true.
const validator_js_contents = fs.readFileSync(VALIDATOR_JS_FILE).toString();
amphtml_validator_signature = lib_extract_validator_signature(
validator_js_contents);
amphtml_validator_instance = amphtml_validator.newInstance(validator_js_contents);
return amphtml_validator_instance;
}
/**
* Downloads the AMPHTML JavaScript validator from 'https://cdn.ampproject.org/v0/validator.js'
*/
function lib_download_validator(callback_on_complete) {
const _callback_on_complete = callback_on_complete || null;
const source_url = VALIDATOR_JS_URL;
const target_file = VALIDATOR_JS_FILE;
var options = {
// see: https://www.npmjs.com/package/wget-improved#download-and-request-method-options
};
var download = wget.download(source_url, target_file, options);
download.on('error', function(err) {
console.log('[VALIDATOR REFRESH] ERROR: ' + err);
});
download.on('start', function() {
console.log('[VALIDATOR REFRESH] START: Beginning download to disk...');
});
download.on('end', function(output) {
console.log('[VALIDATOR REFRESH] END: ' + output);
lib_load_validator(true); // reload the validator into memory
if (null != _callback_on_complete) {
_callback_on_complete(amphtml_validator_signature);
}
});
}
/**
* Downloads the AMPHTML JavaScript validator and reloads it into memory with opt_force_reload = true
* if a different (not only newer; might be a rollback) version is available.
*/
function lib_refresh_validator_if_stale(callback_on_complete) {
lib_fetch_cdn_validator_signature( (validator_signature_cdn) => {
if (validator_signature_cdn !== amphtml_validator_signature) {
lib_download_validator(callback_on_complete);
} else {
callback_on_complete(amphtml_validator_signature);
}
});
}
/**
* Renders the validation results into an array of human readable strings.
* @param {!Object} validationResult
* @param {string} validate_url to use in rendering error messages.
* @return {!Array<string>}
* @export
*/
function lib_renderValidationResult(validationResult, validate_url) {
const rendered = [];
if (CHECK_PASS === validationResult.status) {
rendered.push(CHECK_PASS);
} else {
rendered.push(CHECK_FAIL);
}
for (let ii = 0; ii < validationResult.errors.length; ii++) {
const error = validationResult.errors[ii];
let msg = validate_url + ': line ' + error.line + ', col ' + error.col + ': ' + error.message;
if (error.specUrl) {
msg += ' (see ' + error.specUrl + ')';
}
rendered.push(msg);
}
return rendered;
}
function lib_validate(body, validate_url) {
let _validator = lib_load_validator();
let _results = _validator.validateString(body);
let _output = lib_renderValidationResult(_results, validate_url);
return _output; //!!!NOTE: returns an ARRAY
}
function lib_validate_lines(body, validate_url) {
let _output = lib_validate(body, validate_url);
return _output.join(os.EOL); //!!!NOTE: returns a MULTILINE STRING
}
function lib_validate_json(body, validate_url) {
let _output = lib_validate(body, validate_url);
return _output; //!!!NOTE: returns an ARRAY
}
function fetch_and_validate_url(validate_url, on_output_callback, as_json) {
let http_response = new HttpResponse(validate_url);
if (http_response.urlIsOK()) { // do not bother if not...
let full_path = validate_url;
if (full_path.indexOf('http://') === 0 ||
full_path.indexOf('https://') === 0) {
let url_parsed = url.parse(full_path),
url_parsed_path = url_parsed.pathname;
if (url_parsed.search) {
url_parsed_path = url_parsed.pathname + url_parsed.search;
}
const callback = (res) => {
let chunks = [], body = '', output = '';
http_response.setResponse(res); //!!!DO THIS IMMEDIATELY else HttpResponse class is useless
if (!http_response.statusIsOK()) { // NOT (200 == this.http_response_code)
http_response.http_response_body = '';
on_output_callback(http_response, [CHECK_FAIL]); // !!! RETURN to front-end - - - - - - - - - - - -
}
res.on('data', (chunk) => {
chunks.push(chunk);
});
res.on('end', () => {
http_response.setResponseEnded();
body = chunks.join('');
http_response.http_response_body = body;
if (http_response.statusIsOK()) {
if (0 === as_json) { // return output as JSON or not
output = lib_validate_lines(body, full_path); //!!!NOTE: gets a MULTILINE STRING
} else {
output = lib_validate_json(body, full_path); //!!!NOTE: gets an ARRAY
}
on_output_callback(http_response, output); // !!! RETURN to front-end - - - - - - - - - - - - -
}
});
};
const http_options = {
host: url_parsed.hostname,
path: url_parsed_path,
headers: { 'User-Agent': UA_AMPBENCH }
};
let req = http_response.http_client.request(http_options, callback);
req.on('error', (err) => {
http_response.is_https_cert_ssl_error = err;
on_output_callback(http_response, [CHECK_FAIL]); // !!! RETURN to front-end - - - - - - - - - - - - - -
});
req.end();
}
} else {
http_response.http_response_body = '';
on_output_callback(http_response, [CHECK_FAIL]); // !!! RETURN to front-end - - - - - - - - - - - - - - - - - -
}
}
function fetch_and_parse_url_for_amplinks(request_url, on_parsed_callback) {