main/app/inc/URLAnalyzer.php
2025-01-24 18:58:09 -03:00

882 lines
34 KiB
PHP

<?php
/**
* Class responsible for URL analysis and processing
* Classe responsável pela análise e processamento de URLs
*
* This class implements functionalities for:
* Esta classe implementa funcionalidades para:
*
* - URL analysis and cleaning / Análise e limpeza de URLs
* - Content caching / Cache de conteúdo
* - DNS resolution / Resolução DNS
* - HTTP requests with multiple attempts / Requisições HTTP com múltiplas tentativas
* - Content processing based on domain-specific rules / Processamento de conteúdo baseado em regras específicas por domínio
* - Wayback Machine support as fallback / Suporte a Wayback Machine como fallback
* - Selenium extraction support when enabled by domain / Suporte a extração via Selenium quando habilitado por domínio
*/
require_once __DIR__ . '/Rules.php';
require_once __DIR__ . '/Cache.php';
require_once __DIR__ . '/Logger.php';
require_once __DIR__ . '/Language.php';
use Curl\Curl;
use Facebook\WebDriver\Remote\DesiredCapabilities;
use Facebook\WebDriver\Remote\RemoteWebDriver;
use Facebook\WebDriver\Firefox\FirefoxOptions;
use Facebook\WebDriver\Firefox\FirefoxProfile;
use Facebook\WebDriver\Chrome\ChromeOptions;
use Inc\Logger;
/**
* Custom exception class for URL analysis errors
* Classe de exceção personalizada para erros de análise de URL
*/
class URLAnalyzerException extends Exception
{
private $errorType;
private $additionalInfo;
public function __construct($message, $code, $errorType, $additionalInfo = '')
{
parent::__construct($message, $code);
$this->errorType = $errorType;
$this->additionalInfo = $additionalInfo;
}
public function getErrorType()
{
return $this->errorType;
}
public function getAdditionalInfo()
{
return $this->additionalInfo;
}
}
class URLAnalyzer
{
// Error type constants
const ERROR_INVALID_URL = 'INVALID_URL';
const ERROR_BLOCKED_DOMAIN = 'BLOCKED_DOMAIN';
const ERROR_NOT_FOUND = 'NOT_FOUND';
const ERROR_HTTP_ERROR = 'HTTP_ERROR';
const ERROR_CONNECTION_ERROR = 'CONNECTION_ERROR';
const ERROR_DNS_FAILURE = 'DNS_FAILURE';
const ERROR_CONTENT_ERROR = 'CONTENT_ERROR';
const ERROR_GENERIC_ERROR = 'GENERIC_ERROR';
// Error mapping
private $errorMap = [
self::ERROR_INVALID_URL => ['code' => 400, 'message_key' => 'INVALID_URL'],
self::ERROR_BLOCKED_DOMAIN => ['code' => 403, 'message_key' => 'BLOCKED_DOMAIN'],
self::ERROR_NOT_FOUND => ['code' => 404, 'message_key' => 'NOT_FOUND'],
self::ERROR_HTTP_ERROR => ['code' => 502, 'message_key' => 'HTTP_ERROR'],
self::ERROR_CONNECTION_ERROR => ['code' => 503, 'message_key' => 'CONNECTION_ERROR'],
self::ERROR_DNS_FAILURE => ['code' => 504, 'message_key' => 'DNS_FAILURE'],
self::ERROR_CONTENT_ERROR => ['code' => 502, 'message_key' => 'CONTENT_ERROR'],
self::ERROR_GENERIC_ERROR => ['code' => 500, 'message_key' => 'GENERIC_ERROR']
];
/**
* Helper method to throw standardized errors
* Método auxiliar para lançar erros padronizados
*/
private function throwError($errorType, $additionalInfo = '')
{
$errorConfig = $this->errorMap[$errorType];
$message = Language::getMessage($errorConfig['message_key'])['message'];
if ($additionalInfo) {
$message;
}
throw new URLAnalyzerException($message, $errorConfig['code'], $errorType, $additionalInfo);
}
/**
* @var array List of available User Agents for requests
* @var array Lista de User Agents disponíveis para requisições
*/
private $userAgents = [
// Google News bot
// Bot do Google News
'Googlebot-News',
// Mobile Googlebot
// Googlebot para dispositivos móveis
'Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5X Build/MMB29P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/W.X.Y.Z Mobile Safari/537.36 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)',
// Desktop Googlebot
// Googlebot para desktop
'Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Googlebot/2.1; +http://www.google.com/bot.html) Chrome/W.X.Y.Z Safari/537.36'
];
/**
* @var array List of social media referrers
* @var array Lista de referenciadores de mídia social
*/
private $socialReferrers = [
// Twitter
'https://t.co/',
'https://www.twitter.com/',
// Facebook
'https://www.facebook.com/',
// Linkedin
'https://www.linkedin.com/'
];
/**
* @var array List of DNS servers for resolution
* @var array Lista de servidores DNS para resolução
*/
private $dnsServers;
/**
* @var Rules Instance of rules class
* @var Rules Instância da classe de regras
*/
private $rules;
/**
* @var Cache Instance of cache class
* @var Cache Instância da classe de cache
*/
private $cache;
/**
* @var array List of rules activated during processing
* @var array Lista de regras ativadas durante o processamento
*/
private $activatedRules = [];
/**
* Class constructor
* Construtor da classe
*
* Initializes required dependencies
* Inicializa as dependências necessárias
*/
public function __construct()
{
$this->dnsServers = explode(',', DNS_SERVERS);
$this->rules = new Rules();
$this->cache = new Cache();
}
/**
* Check if a URL has redirects and return the final URL
* Verifica se uma URL tem redirecionamentos e retorna a URL final
*
* @param string $url URL to check redirects / URL para verificar redirecionamentos
* @return array Array with final URL and if there was a redirect / Array com a URL final e se houve redirecionamento
*/
public function checkStatus($url)
{
$curl = new Curl();
$curl->setFollowLocation();
$curl->setOpt(CURLOPT_TIMEOUT, 5);
$curl->setOpt(CURLOPT_SSL_VERIFYPEER, false);
$curl->setOpt(CURLOPT_NOBODY, true);
$curl->setUserAgent($this->getRandomUserAgent());
$curl->get($url);
if ($curl->error) {
return [
'finalUrl' => $url,
'hasRedirect' => false,
'httpCode' => $curl->httpStatusCode
];
}
return [
'finalUrl' => $curl->effectiveUrl,
'hasRedirect' => ($curl->effectiveUrl !== $url),
'httpCode' => $curl->httpStatusCode
];
}
/**
* Get a random user agent, with possibility of using Google bot
* Obtém um user agent aleatório, com possibilidade de usar o Google bot
*
* @param bool $preferGoogleBot Whether to prefer Google bot user agents / Se deve preferir user agents do Google bot
* @return string Selected user agent / User agent selecionado
*/
private function getRandomUserAgent($preferGoogleBot = false)
{
if ($preferGoogleBot && rand(0, 100) < 70) {
return $this->userAgents[array_rand($this->userAgents)];
}
return $this->userAgents[array_rand($this->userAgents)];
}
/**
* Get a random social media referrer
* Obtém um referenciador de mídia social aleatório
*
* @return string Selected referrer / Referenciador selecionado
*/
private function getRandomSocialReferrer()
{
return $this->socialReferrers[array_rand($this->socialReferrers)];
}
/**
* Main method for URL analysis
* Método principal para análise de URLs
*
* @param string $url URL to be analyzed / URL a ser analisada
* @return string Processed content / Conteúdo processado
* @throws URLAnalyzerException In case of processing errors / Em caso de erros durante o processamento
*/
public function analyze($url)
{
// Reset activated rules for new analysis
// Reset das regras ativadas para nova análise
$this->activatedRules = [];
// 1. Check cache / Verifica cache
if ($this->cache->exists($url)) {
return $this->cache->get($url);
}
// 2. Check blocked domains / Verifica domínios bloqueados
$host = parse_url($url, PHP_URL_HOST);
if (!$host) {
$this->throwError(self::ERROR_INVALID_URL);
}
$host = preg_replace('/^www\./', '', $host);
if (in_array($host, BLOCKED_DOMAINS)) {
Logger::getInstance()->logUrl($url, 'BLOCKED_DOMAIN');
$this->throwError(self::ERROR_BLOCKED_DOMAIN);
}
// 3. Check URL status code before proceeding
$redirectInfo = $this->checkStatus($url);
if ($redirectInfo['httpCode'] !== 200) {
Logger::getInstance()->logUrl($url, 'INVALID_STATUS_CODE', "HTTP {$redirectInfo['httpCode']}");
if ($redirectInfo['httpCode'] === 404) {
$this->throwError(self::ERROR_NOT_FOUND);
} else {
$this->throwError(self::ERROR_HTTP_ERROR, "HTTP {$redirectInfo['httpCode']}");
}
}
try {
// 4. Get domain rules and check fetch strategy / Obtenha regras de domínio e verifique a estratégia de busca
$domainRules = $this->getDomainRules($host);
$fetchStrategy = isset($domainRules['fetchStrategies']) ? $domainRules['fetchStrategies'] : null;
// If a specific fetch strategy is defined, use only that / Se uma estratégia de busca específica for definida, use somente essa
if ($fetchStrategy) {
try {
$content = null;
switch ($fetchStrategy) {
case 'fetchContent':
$content = $this->fetchContent($url);
break;
case 'fetchFromWaybackMachine':
$content = $this->fetchFromWaybackMachine($url);
break;
case 'fetchFromSelenium':
$content = $this->fetchFromSelenium($url, isset($domainRules['browser']) ? $domainRules['browser'] : 'firefox');
break;
}
if (!empty($content)) {
$this->activatedRules[] = "fetchStrategy: $fetchStrategy";
$processedContent = $this->processContent($content, $host, $url);
$this->cache->set($url, $processedContent);
return $processedContent;
}
} catch (Exception $e) {
Logger::getInstance()->logUrl($url, strtoupper($fetchStrategy) . '_ERROR', $e->getMessage());
throw $e;
}
}
// 5. Try all strategies in sequence
$fetchStrategies = [
['method' => 'fetchContent', 'args' => [$url]],
['method' => 'fetchFromWaybackMachine', 'args' => [$url]],
['method' => 'fetchFromSelenium', 'args' => [$url, 'firefox']]
];
$lastError = null;
foreach ($fetchStrategies as $strategy) {
try {
$content = call_user_func_array([$this, $strategy['method']], $strategy['args']);
if (!empty($content)) {
$this->activatedRules[] = "fetchStrategy: {$strategy['method']}";
$processedContent = $this->processContent($content, $host, $url);
$this->cache->set($url, $processedContent);
return $processedContent;
}
} catch (Exception $e) {
$lastError = $e;
error_log("{$strategy['method']}_ERROR: " . $e->getMessage());
continue;
}
}
// If we get here, all strategies failed
Logger::getInstance()->logUrl($url, 'GENERAL_FETCH_ERROR');
if ($lastError) {
$message = $lastError->getMessage();
if (strpos($message, 'DNS') !== false) {
$this->throwError(self::ERROR_DNS_FAILURE);
} elseif (strpos($message, 'CURL') !== false) {
$this->throwError(self::ERROR_CONNECTION_ERROR);
} elseif (strpos($message, 'HTTP') !== false) {
$this->throwError(self::ERROR_HTTP_ERROR);
} elseif (strpos($message, 'not found') !== false) {
$this->throwError(self::ERROR_NOT_FOUND);
}
}
$this->throwError(self::ERROR_CONTENT_ERROR);
} catch (URLAnalyzerException $e) {
throw $e;
} catch (Exception $e) {
// Map generic exceptions to appropriate error types
$message = $e->getMessage();
if (strpos($message, 'DNS') !== false) {
$this->throwError(self::ERROR_DNS_FAILURE);
} elseif (strpos($message, 'CURL') !== false) {
$this->throwError(self::ERROR_CONNECTION_ERROR);
} elseif (strpos($message, 'HTTP') !== false) {
$this->throwError(self::ERROR_HTTP_ERROR);
} elseif (strpos($message, 'not found') !== false) {
$this->throwError(self::ERROR_NOT_FOUND);
} else {
$this->throwError(self::ERROR_GENERIC_ERROR, $message);
}
}
}
/**
* Fetch content from URL
* Busca conteúdo da URL
*/
private function fetchContent($url)
{
$curl = new Curl();
$host = parse_url($url, PHP_URL_HOST);
if (!$host) {
$this->throwError(self::ERROR_INVALID_URL);
}
$host = preg_replace('/^www\./', '', $host);
$domainRules = $this->getDomainRules($host);
$curl->setOpt(CURLOPT_FOLLOWLOCATION, true);
$curl->setOpt(CURLOPT_MAXREDIRS, 2);
$curl->setOpt(CURLOPT_TIMEOUT, 10);
$curl->setOpt(CURLOPT_SSL_VERIFYPEER, false);
$curl->setOpt(CURLOPT_DNS_SERVERS, implode(',', $this->dnsServers));
$curl->setOpt(CURLOPT_ENCODING, '');
// Additional anti-detection headers / Cabeçalhos anti-detecção adicionais
$curl->setHeaders([
'Accept' => 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8',
'Accept-Language' => 'en-US,en;q=0.5',
'Cache-Control' => 'no-cache',
'Pragma' => 'no-cache',
'DNT' => '1'
]);
// Set Google bot specific headers / Definir cabeçalhos específicos do bot do Google
if (isset($domainRules['fromGoogleBot'])) {
$curl->setUserAgent($this->getRandomUserAgent(true));
$curl->setHeaders([
'X-Forwarded-For' => '66.249.' . rand(64, 95) . '.' . rand(1, 254),
'From' => 'googlebot(at)googlebot.com'
]);
}
// Add domain-specific headers / Adicionar cabeçalhos específicos de domínio
if (isset($domainRules['headers'])) {
$curl->setHeaders($domainRules['headers']);
}
$curl->get($url);
if ($curl->error) {
$errorMessage = $curl->errorMessage;
if (strpos($errorMessage, 'DNS') !== false) {
$this->throwError(self::ERROR_DNS_FAILURE);
} elseif (strpos($errorMessage, 'CURL') !== false) {
$this->throwError(self::ERROR_CONNECTION_ERROR);
} elseif ($curl->httpStatusCode === 404) {
$this->throwError(self::ERROR_NOT_FOUND);
} else {
$this->throwError(self::ERROR_HTTP_ERROR);
}
}
if ($curl->httpStatusCode !== 200 || empty($curl->response)) {
$this->throwError(self::ERROR_HTTP_ERROR);
}
return $curl->response;
}
/**
* Try to get content from Internet Archive's Wayback Machine
* Tenta obter conteúdo do Wayback Machine do Internet Archive
*/
private function fetchFromWaybackMachine($url)
{
$url = preg_replace('#^https?://#', '', $url);
$availabilityUrl = "https://archive.org/wayback/available?url=" . urlencode($url);
$curl = new Curl();
$curl->setOpt(CURLOPT_FOLLOWLOCATION, true);
$curl->setOpt(CURLOPT_TIMEOUT, 10);
$curl->setOpt(CURLOPT_SSL_VERIFYPEER, false);
$curl->setUserAgent($this->getRandomUserAgent());
$curl->get($availabilityUrl);
if ($curl->error) {
if (strpos($curl->errorMessage, 'DNS') !== false) {
$this->throwError(self::ERROR_DNS_FAILURE);
} elseif (strpos($curl->errorMessage, 'CURL') !== false) {
$this->throwError(self::ERROR_CONNECTION_ERROR);
} else {
$this->throwError(self::ERROR_HTTP_ERROR);
}
}
$data = $curl->response;
if (!isset($data->archived_snapshots->closest->url)) {
$this->throwError(self::ERROR_NOT_FOUND);
}
$archiveUrl = $data->archived_snapshots->closest->url;
$curl = new Curl();
$curl->setOpt(CURLOPT_FOLLOWLOCATION, true);
$curl->setOpt(CURLOPT_TIMEOUT, 10);
$curl->setOpt(CURLOPT_SSL_VERIFYPEER, false);
$curl->setUserAgent($this->getRandomUserAgent());
$curl->get($archiveUrl);
if ($curl->error || $curl->httpStatusCode !== 200 || empty($curl->response)) {
$this->throwError(self::ERROR_HTTP_ERROR);
}
$content = $curl->response;
// Remove Wayback Machine toolbar and cache URLs / Remover a barra de ferramentas do Wayback Machine e URLs de cache
$content = preg_replace('/<!-- BEGIN WAYBACK TOOLBAR INSERT -->.*?<!-- END WAYBACK TOOLBAR INSERT -->/s', '', $content);
$content = preg_replace('/https?:\/\/web\.archive\.org\/web\/\d+im_\//', '', $content);
return $content;
}
/**
* Try to get content using Selenium
* Tenta obter conteúdo usando Selenium
*/
private function fetchFromSelenium($url, $browser = 'firefox')
{
$host = 'http://'.SELENIUM_HOST.'/wd/hub';
if ($browser === 'chrome') {
$options = new ChromeOptions();
$options->addArguments([
'--headless',
'--disable-gpu',
'--no-sandbox',
'--disable-dev-shm-usage',
'--disable-images',
'--blink-settings=imagesEnabled=false'
]);
$capabilities = DesiredCapabilities::chrome();
$capabilities->setCapability(ChromeOptions::CAPABILITY, $options);
} else {
$profile = new FirefoxProfile();
$profile->setPreference("permissions.default.image", 2);
$profile->setPreference("javascript.enabled", true);
$profile->setPreference("network.http.referer.defaultPolicy", 0);
$profile->setPreference("network.http.referer.defaultReferer", "https://www.google.com");
$profile->setPreference("network.http.referer.spoofSource", true);
$profile->setPreference("network.http.referer.trimmingPolicy", 0);
$options = new FirefoxOptions();
$options->setProfile($profile);
$capabilities = DesiredCapabilities::firefox();
$capabilities->setCapability(FirefoxOptions::CAPABILITY, $options);
}
try {
$driver = RemoteWebDriver::create($host, $capabilities);
$driver->manage()->timeouts()->pageLoadTimeout(10);
$driver->manage()->timeouts()->setScriptTimeout(5);
$driver->get($url);
$htmlSource = $driver->executeScript("return document.documentElement.outerHTML;");
$driver->quit();
if (empty($htmlSource)) {
$this->throwError(self::ERROR_CONTENT_ERROR);
}
return $htmlSource;
} catch (Exception $e) {
if (isset($driver)) {
$driver->quit();
}
// Map Selenium errors to appropriate error types
$message = $e->getMessage();
if (strpos($message, 'DNS') !== false) {
$this->throwError(self::ERROR_DNS_FAILURE);
} elseif (strpos($message, 'timeout') !== false) {
$this->throwError(self::ERROR_CONNECTION_ERROR);
} elseif (strpos($message, 'not found') !== false) {
$this->throwError(self::ERROR_NOT_FOUND);
} else {
$this->throwError(self::ERROR_HTTP_ERROR);
}
}
}
/**
* Get specific rules for a domain
* Obtém regras específicas para um domínio
*/
private function getDomainRules($domain)
{
return $this->rules->getDomainRules($domain);
}
/**
* Process HTML content applying domain rules
* Processa conteúdo HTML aplicando regras de domínio
*/
private function processContent($content, $host, $url)
{
if (strlen($content) < 5120) {
$this->throwError(self::ERROR_CONTENT_ERROR);
}
$dom = new DOMDocument();
$dom->preserveWhiteSpace = true;
libxml_use_internal_errors(true);
@$dom->loadHTML(mb_convert_encoding($content, 'HTML-ENTITIES', 'UTF-8'), LIBXML_HTML_NOIMPLIED | LIBXML_HTML_NODEFDTD);
libxml_clear_errors();
$xpath = new DOMXPath($dom);
// Process canonical tags / Processar tags canônicas
$canonicalLinks = $xpath->query("//link[@rel='canonical']");
if ($canonicalLinks !== false) {
foreach ($canonicalLinks as $link) {
if ($link->parentNode) {
$link->parentNode->removeChild($link);
}
}
}
// Add new canonical tag / Adicionar nova tag canônica
$head = $xpath->query('//head')->item(0);
if ($head) {
$newCanonical = $dom->createElement('link');
$newCanonical->setAttribute('rel', 'canonical');
$newCanonical->setAttribute('href', $url);
$head->appendChild($newCanonical);
}
// Fix relative URLs / Corrigir URLs relativas
$this->fixRelativeUrls($dom, $xpath, $url);
$domainRules = $this->getDomainRules($host);
// Apply domain rules / Aplicar regras de domínio
if (isset($domainRules['customStyle'])) {
$styleElement = $dom->createElement('style');
$styleElement->appendChild($dom->createTextNode($domainRules['customStyle']));
$dom->getElementsByTagName('head')[0]->appendChild($styleElement);
$this->activatedRules[] = 'customStyle';
}
if (isset($domainRules['customCode'])) {
$scriptElement = $dom->createElement('script');
$scriptElement->setAttribute('type', 'text/javascript');
$scriptElement->appendChild($dom->createTextNode($domainRules['customCode']));
$dom->getElementsByTagName('body')[0]->appendChild($scriptElement);
}
// Remove unwanted elements / Remover elementos indesejados
$this->removeUnwantedElements($dom, $xpath, $domainRules);
// Clean inline styles / Limpar estilos inline
$this->cleanInlineStyles($xpath);
// Add Brand Bar / Adicionar barra de marca
$this->addBrandBar($dom, $xpath);
// Add debug panel / Adicionar painel de debug
$this->addDebugBar($dom, $xpath);
return $dom->saveHTML();
}
/**
* Remove unwanted elements based on domain rules
* Remove elementos indesejados com base nas regras de domínio
*/
private function removeUnwantedElements($dom, $xpath, $domainRules)
{
if (isset($domainRules['classAttrRemove'])) {
foreach ($domainRules['classAttrRemove'] as $class) {
$elements = $xpath->query("//*[contains(@class, '$class')]");
if ($elements !== false && $elements->length > 0) {
foreach ($elements as $element) {
$this->removeClassNames($element, [$class]);
}
$this->activatedRules[] = "classAttrRemove: $class";
}
}
}
if (isset($domainRules['removeElementsByTag'])) {
$tagsToRemove = $domainRules['removeElementsByTag'];
foreach ($tagsToRemove as $tag) {
$tagElements = $xpath->query("//$tag");
if ($tagElements !== false) {
foreach ($tagElements as $element) {
if ($element->parentNode) {
$element->parentNode->removeChild($element);
}
}
$this->activatedRules[] = "removeElementsByTag: $tag";
}
}
}
if (isset($domainRules['idElementRemove'])) {
foreach ($domainRules['idElementRemove'] as $id) {
$elements = $xpath->query("//*[@id='$id']");
if ($elements !== false && $elements->length > 0) {
foreach ($elements as $element) {
if ($element->parentNode) {
$element->parentNode->removeChild($element);
}
}
$this->activatedRules[] = "idElementRemove: $id";
}
}
}
if (isset($domainRules['classElementRemove'])) {
foreach ($domainRules['classElementRemove'] as $class) {
$elements = $xpath->query("//*[contains(@class, '$class')]");
if ($elements !== false && $elements->length > 0) {
foreach ($elements as $element) {
if ($element->parentNode) {
$element->parentNode->removeChild($element);
}
}
$this->activatedRules[] = "classElementRemove: $class";
}
}
}
if (isset($domainRules['scriptTagRemove'])) {
foreach ($domainRules['scriptTagRemove'] as $script) {
$scriptElements = $xpath->query("//script[contains(@src, '$script')] | //script[contains(text(), '$script')]");
if ($scriptElements !== false && $scriptElements->length > 0) {
foreach ($scriptElements as $element) {
if ($element->parentNode) {
$element->parentNode->removeChild($element);
}
}
$this->activatedRules[] = "scriptTagRemove: $script";
}
$linkElements = $xpath->query("//link[@as='script' and contains(@href, '$script') and @type='application/javascript']");
if ($linkElements !== false && $linkElements->length > 0) {
foreach ($linkElements as $element) {
if ($element->parentNode) {
$element->parentNode->removeChild($element);
}
}
$this->activatedRules[] = "scriptTagRemove: $script";
}
}
}
if (isset($domainRules['removeCustomAttr'])) {
foreach ($domainRules['removeCustomAttr'] as $attrPattern) {
if (strpos($attrPattern, '*') !== false) {
// For wildcard attributes (e.g. data-*) / Para atributos com wildcard (ex: data-*)
$elements = $xpath->query('//*');
if ($elements !== false) {
$pattern = '/^' . str_replace('*', '.*', $attrPattern) . '$/';
foreach ($elements as $element) {
if ($element->hasAttributes()) {
$attrs = [];
foreach ($element->attributes as $attr) {
if (preg_match($pattern, $attr->name)) {
$attrs[] = $attr->name;
}
}
foreach ($attrs as $attr) {
$element->removeAttribute($attr);
}
}
}
$this->activatedRules[] = "removeCustomAttr: $attrPattern";
}
} else {
// For non-wildcard attributes / Para atributos sem wildcard
$elements = $xpath->query("//*[@$attrPattern]");
if ($elements !== false && $elements->length > 0) {
foreach ($elements as $element) {
$element->removeAttribute($attrPattern);
}
$this->activatedRules[] = "removeCustomAttr: $attrPattern";
}
}
}
}
}
/**
* Clean inline styles that might interfere with content visibility
* Limpa estilos inline que podem interferir na visibilidade do conteúdo
*/
private function cleanInlineStyles($xpath)
{
$elements = $xpath->query("//*[@style]");
if ($elements !== false) {
foreach ($elements as $element) {
if ($element instanceof DOMElement) {
$style = $element->getAttribute('style');
$style = preg_replace('/(max-height|height|overflow|position|display|visibility)\s*:\s*[^;]+;?/', '', $style);
$element->setAttribute('style', $style);
}
}
}
}
/**
* Add Brand Bar CTA and debug panel
* Adiciona CTA da marca e painel de debug
*/
private function addBrandBar($dom, $xpath)
{
$body = $xpath->query('//body')->item(0);
if ($body) {
$brandDiv = $dom->createElement('div');
$brandDiv->setAttribute('style', 'z-index: 99999; position: fixed; top: 0; right: 1rem; background: rgba(37,99,235, 0.9); backdrop-filter: blur(8px); color: #fff; font-size: 13px; line-height: 1em; box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1); padding: 8px 12px; margin: 0px; overflow: hidden; border-bottom-left-radius: 8px; border-bottom-right-radius: 8px; font-family: Tahoma, sans-serif;');
$brandHtml = $dom->createDocumentFragment();
$brandHtml->appendXML('<a href="'.SITE_URL.'" style="color: #fff; text-decoration: none; font-weight: bold;" target="_blank">'.htmlspecialchars(SITE_DESCRIPTION).'</a>');
$brandDiv->appendChild($brandHtml);
$body->appendChild($brandDiv);
}
}
/**
* Add debug panel if LOG_LEVEL is DEBUG
* Adicionar painel de depuração se LOG_LEVEL for DEBUG
*/
private function addDebugBar($dom, $xpath)
{
if (LOG_LEVEL === 'DEBUG') {
$body = $xpath->query('//body')->item(0);
if ($body) {
$debugDiv = $dom->createElement('div');
$debugDiv->setAttribute('style', 'position: fixed; bottom: 1rem; right: 1rem; max-width: 400px; padding: 1rem; background: rgba(255, 255, 255, 0.9); backdrop-filter: blur(8px); border: 1px solid #e5e7eb; border-radius: 0.5rem; box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1); overflow: auto; max-height: 80vh; z-index: 9999; font-family: monospace; font-size: 13px; line-height: 1.4;');
if (empty($this->activatedRules)) {
$ruleElement = $dom->createElement('div');
$ruleElement->textContent = 'No rules activated / Nenhuma regra ativada';
$debugDiv->appendChild($ruleElement);
} else {
foreach ($this->activatedRules as $rule) {
$ruleElement = $dom->createElement('div');
$ruleElement->textContent = $rule;
$debugDiv->appendChild($ruleElement);
}
}
$body->appendChild($debugDiv);
}
}
}
/**
* Remove specific classes from an element
* Remove classes específicas de um elemento
*/
private function removeClassNames($element, $classesToRemove)
{
if (!$element->hasAttribute('class')) {
return;
}
$classes = explode(' ', $element->getAttribute('class'));
$newClasses = array_filter($classes, function ($class) use ($classesToRemove) {
return !in_array(trim($class), $classesToRemove);
});
if (empty($newClasses)) {
$element->removeAttribute('class');
} else {
$element->setAttribute('class', implode(' ', $newClasses));
}
}
/**
* Fix relative URLs in a DOM document
* Corrige URLs relativas em um documento DOM
*/
private function fixRelativeUrls($dom, $xpath, $baseUrl)
{
$parsedBase = parse_url($baseUrl);
$baseHost = $parsedBase['scheme'] . '://' . $parsedBase['host'];
$elements = $xpath->query("//*[@src]");
if ($elements !== false) {
foreach ($elements as $element) {
if ($element instanceof DOMElement) {
$src = $element->getAttribute('src');
if (strpos($src, 'base64') !== false) {
continue;
}
if (strpos($src, 'http') !== 0 && strpos($src, '//') !== 0) {
$src = ltrim($src, '/');
$element->setAttribute('src', $baseHost . '/' . $src);
}
}
}
}
$elements = $xpath->query("//*[@href]");
if ($elements !== false) {
foreach ($elements as $element) {
if ($element instanceof DOMElement) {
$href = $element->getAttribute('href');
if (strpos($href, 'mailto:') === 0 ||
strpos($href, 'tel:') === 0 ||
strpos($href, 'javascript:') === 0 ||
strpos($href, '#') === 0) {
continue;
}
if (strpos($href, 'http') !== 0 && strpos($href, '//') !== 0) {
$href = ltrim($href, '/');
$element->setAttribute('href', $baseHost . '/' . $href);
}
}
}
}
}
}