mirror of
https://github.com/manualdousuario/marreta.git
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621 lines
22 KiB
PHP
621 lines
22 KiB
PHP
<?php
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/**
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* Classe responsável pela análise e processamento de URLs
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*
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* Esta classe implementa funcionalidades para:
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* - Análise e limpeza de URLs
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* - Cache de conteúdo
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* - Resolução DNS
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* - Requisições HTTP com múltiplas tentativas
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* - Processamento de conteúdo baseado em regras específicas por domínio
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* - Suporte a Wayback Machine como fallback
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* - Suporte a extração via Selenium quando habilitado por domínio
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*/
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require_once 'Rules.php';
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require_once 'Cache.php';
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use Curl\Curl;
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use Facebook\WebDriver\Remote\DesiredCapabilities;
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use Facebook\WebDriver\Remote\RemoteWebDriver;
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use Facebook\WebDriver\Firefox\FirefoxOptions;
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use Facebook\WebDriver\Firefox\FirefoxProfile;
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use Facebook\WebDriver\Chrome\ChromeOptions;
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class URLAnalyzer
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{
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/**
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* @var array Lista de User Agents disponíveis para requisições
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*/
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private $userAgents;
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/**
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* @var array Lista de servidores DNS para resolução
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*/
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private $dnsServers;
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/**
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* @var Rules Instância da classe de regras
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*/
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private $rules;
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/**
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* @var Cache Instância da classe de cache
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*/
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private $cache;
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/**
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* Construtor da classe
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* Inicializa as dependências necessárias
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*/
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public function __construct()
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{
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$this->userAgents = USER_AGENTS;
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$this->dnsServers = explode(',', DNS_SERVERS);
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$this->rules = new Rules();
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$this->cache = new Cache();
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}
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/**
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* Verifica se uma URL tem redirecionamentos e retorna a URL final
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*
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* @param string $url URL para verificar redirecionamentos
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* @return array Array com a URL final e se houve redirecionamento
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*/
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public function checkRedirects($url)
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{
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$curl = new Curl();
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$curl->setFollowLocation();
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$curl->setOpt(CURLOPT_TIMEOUT, 5);
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$curl->setOpt(CURLOPT_SSL_VERIFYPEER, false);
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$curl->setOpt(CURLOPT_NOBODY, true);
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$curl->setUserAgent($this->userAgents[array_rand($this->userAgents)]);
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$curl->get($url);
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if ($curl->error) {
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return [
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'finalUrl' => $url,
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'hasRedirect' => false,
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'httpCode' => $curl->httpStatusCode
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];
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}
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return [
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'finalUrl' => $curl->effectiveUrl,
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'hasRedirect' => ($curl->effectiveUrl !== $url),
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'httpCode' => $curl->httpStatusCode
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];
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}
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/**
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* Registra erros no arquivo de log
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*
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* @param string $url URL que gerou o erro
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* @param string $error Mensagem de erro
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*/
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private function logError($url, $error)
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{
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$timestamp = date('Y-m-d H:i:s');
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$logEntry = "[{$timestamp}] URL: {$url} - Error: {$error}" . PHP_EOL;
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file_put_contents(__DIR__ . '/../logs/error.log', $logEntry, FILE_APPEND);
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}
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/**
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* Método principal para análise de URLs
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*
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* @param string $url URL a ser analisada
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* @return string Conteúdo processado da URL
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* @throws Exception Em caso de erros durante o processamento
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*/
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public function analyze($url)
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{
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// 1. Limpa a URL
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$cleanUrl = $this->cleanUrl($url);
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if (!$cleanUrl) {
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throw new Exception("URL inválida");
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}
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// 2. Verifica cache
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if ($this->cache->exists($cleanUrl)) {
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return $this->cache->get($cleanUrl);
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}
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// 3. Verifica domínios bloqueados
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$host = parse_url($cleanUrl, PHP_URL_HOST);
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$host = preg_replace('/^www\./', '', $host);
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if (in_array($host, BLOCKED_DOMAINS)) {
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$error = 'Este domínio está bloqueado para extração.';
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$this->logError($cleanUrl, $error);
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throw new Exception($error);
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}
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// 4. Verifica se deve usar Selenium
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$domainRules = $this->getDomainRules($host);
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if (isset($domainRules['useSelenium']) && $domainRules['useSelenium'] === true) {
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try {
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$content = $this->fetchFromSelenium($cleanUrl, isset($domainRules['browser']) ? $domainRules['browser'] : 'firefox');
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if (!empty($content)) {
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$processedContent = $this->processContent($content, $host, $cleanUrl);
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$this->cache->set($cleanUrl, $processedContent);
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return $processedContent;
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}
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} catch (Exception $e) {
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$this->logError($cleanUrl, "Selenium fetch error: " . $e->getMessage());
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throw new Exception("Não foi possível obter o conteúdo via Selenium");
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}
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}
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// 5. Tenta buscar conteúdo diretamente
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try {
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$content = $this->fetchContent($cleanUrl);
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if (!empty($content)) {
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$processedContent = $this->processContent($content, $host, $cleanUrl);
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$this->cache->set($cleanUrl, $processedContent);
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return $processedContent;
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}
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} catch (Exception $e) {
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$this->logError($cleanUrl, "Direct fetch error: " . $e->getMessage());
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}
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// 6. Tenta buscar do Wayback Machine como fallback
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try {
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$content = $this->fetchFromWaybackMachine($cleanUrl);
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if (!empty($content)) {
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$processedContent = $this->processContent($content, $host, $cleanUrl);
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$this->cache->set($cleanUrl, $processedContent);
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return $processedContent;
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}
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} catch (Exception $e) {
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$this->logError($cleanUrl, "Wayback Machine error: " . $e->getMessage());
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}
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throw new Exception("Não foi possível obter o conteúdo da URL");
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}
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/**
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* Tenta obter o conteúdo da URL usando Selenium
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*
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* @param string $url URL para buscar
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* @param array $domainRules Regras específicas do domínio
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* @return string|null Conteúdo HTML da página
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* @throws Exception Em caso de erro na requisição
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*/
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private function fetchFromSelenium($url, $browser)
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{
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$host = 'http://'.SELENIUM_HOST.'/wd/hub';
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if ($browser === 'chrome') {
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$options = new ChromeOptions();
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$options->addArguments([
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'--headless',
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'--disable-gpu',
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'--no-sandbox',
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'--disable-dev-shm-usage',
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'--disable-images',
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'--blink-settings=imagesEnabled=false'
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]);
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$capabilities = DesiredCapabilities::chrome();
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$capabilities->setCapability(ChromeOptions::CAPABILITY, $options);
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} else {
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$profile = new FirefoxProfile();
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$profile->setPreference("permissions.default.image", 2); // Não carrega imagens
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$profile->setPreference("javascript.enabled", true); // Mantem habilitado javascripts
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$profile->setPreference("network.http.referer.defaultPolicy", 0); // Sempre envia referer
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$profile->setPreference("network.http.referer.defaultReferer", "https://www.google.com.br"); // Define referer padrão
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$profile->setPreference("network.http.referer.spoofSource", true); // Permite spoofing do referer
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$profile->setPreference("network.http.referer.trimmingPolicy", 0); // Não corta o referer
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$options = new FirefoxOptions();
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$options->setProfile($profile);
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$capabilities = DesiredCapabilities::firefox();
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$capabilities->setCapability(FirefoxOptions::CAPABILITY, $options);
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}
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try {
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$driver = RemoteWebDriver::create($host, $capabilities);
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$driver->manage()->timeouts()->pageLoadTimeout(10);
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$driver->manage()->timeouts()->setScriptTimeout(5);
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$driver->get($url);
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$htmlSource = $driver->getPageSource();
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$driver->quit();
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if (empty($htmlSource)) {
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throw new Exception("Selenium returned empty content");
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}
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return $htmlSource;
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} catch (Exception $e) {
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if (isset($driver)) {
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$driver->quit();
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}
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throw $e;
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}
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}
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/**
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* Tenta obter o conteúdo da URL do Internet Archive's Wayback Machine
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*
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* @param string $url URL original
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* @return string|null Conteúdo do arquivo
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* @throws Exception Em caso de erro na requisição
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*/
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private function fetchFromWaybackMachine($url)
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{
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$cleanUrl = preg_replace('#^https?://#', '', $url);
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$availabilityUrl = "https://archive.org/wayback/available?url=" . urlencode($cleanUrl);
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$curl = new Curl();
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$curl->setOpt(CURLOPT_FOLLOWLOCATION, true);
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$curl->setOpt(CURLOPT_TIMEOUT, 10);
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$curl->setOpt(CURLOPT_SSL_VERIFYPEER, false);
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$curl->setUserAgent($this->userAgents[array_rand($this->userAgents)]);
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$curl->get($availabilityUrl);
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if ($curl->error || $curl->httpStatusCode !== 200) {
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throw new Exception("Erro ao verificar disponibilidade no Wayback Machine");
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}
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$data = $curl->response;
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if (!isset($data->archived_snapshots->closest->url)) {
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throw new Exception("Nenhum snapshot encontrado no Wayback Machine");
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}
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$archiveUrl = $data->archived_snapshots->closest->url;
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$curl = new Curl();
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$curl->setOpt(CURLOPT_FOLLOWLOCATION, true);
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$curl->setOpt(CURLOPT_TIMEOUT, 10);
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$curl->setOpt(CURLOPT_SSL_VERIFYPEER, false);
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$curl->setUserAgent($this->userAgents[array_rand($this->userAgents)]);
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$curl->get($archiveUrl);
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if ($curl->error || $curl->httpStatusCode !== 200 || empty($curl->response)) {
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throw new Exception("Erro ao obter conteúdo do Wayback Machine");
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}
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$content = $curl->response;
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// Remove o toolbar do Wayback Machine e URLs de cache
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$content = preg_replace('/<!-- BEGIN WAYBACK TOOLBAR INSERT -->.*?<!-- END WAYBACK TOOLBAR INSERT -->/s', '', $content);
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$content = preg_replace('/https?:\/\/web\.archive\.org\/web\/\d+im_\//', '', $content);
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return $content;
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}
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/**
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* Realiza requisição HTTP usando Curl Class
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*
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* @param string $url URL para requisição
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* @return string Conteúdo da página
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* @throws Exception Em caso de erro na requisição
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*/
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private function fetchContent($url)
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{
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$host = parse_url($url, PHP_URL_HOST);
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$host = preg_replace('/^www\./', '', $host);
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$domainRules = $this->getDomainRules($host);
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$curl = new Curl();
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$curl->setOpt(CURLOPT_FOLLOWLOCATION, true);
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$curl->setOpt(CURLOPT_MAXREDIRS, 2);
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$curl->setOpt(CURLOPT_TIMEOUT, 10);
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$curl->setOpt(CURLOPT_SSL_VERIFYPEER, false);
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$curl->setOpt(CURLOPT_DNS_SERVERS, implode(',', $this->dnsServers));
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// Define User Agent
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$userAgent = isset($domainRules['userAgent'])
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? $domainRules['userAgent']
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: $this->userAgents[array_rand($this->userAgents)];
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$curl->setUserAgent($userAgent);
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// Headers padrão
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$headers = [
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'Host' => $host,
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'Accept' => 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8',
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'Accept-Language' => 'pt-BR,pt;q=0.9,en-US;q=0.8,en;q=0.7',
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'Cache-Control' => 'no-cache',
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'Pragma' => 'no-cache'
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];
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// Adiciona headers específicos do domínio
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if (isset($domainRules['headers'])) {
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$headers = array_merge($headers, $domainRules['headers']);
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}
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$curl->setHeaders($headers);
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// Adiciona cookies específicos do domínio
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if (isset($domainRules['cookies'])) {
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$cookies = [];
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foreach ($domainRules['cookies'] as $name => $value) {
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if ($value !== null) {
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$cookies[] = $name . '=' . $value;
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}
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}
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if (!empty($cookies)) {
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$curl->setHeader('Cookie', implode('; ', $cookies));
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}
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}
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// Adiciona referer se especificado
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if (isset($domainRules['referer'])) {
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$curl->setHeader('Referer', $domainRules['referer']);
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}
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$curl->get($url);
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if ($curl->error || $curl->httpStatusCode !== 200) {
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throw new Exception("Erro HTTP " . $curl->httpStatusCode . ": " . $curl->errorMessage);
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}
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if (empty($curl->response)) {
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throw new Exception("Resposta vazia do servidor");
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}
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return $curl->response;
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}
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/**
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* Limpa e normaliza uma URL
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*
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* @param string $url URL para limpar
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* @return string|false URL limpa e normalizada ou false se inválida
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*/
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private function cleanUrl($url)
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{
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$url = trim($url);
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// Verifica se a URL é válida
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if (!filter_var($url, FILTER_VALIDATE_URL)) {
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return false;
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}
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// Detecta e converte URLs AMP
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if (preg_match('#https://([^.]+)\.cdn\.ampproject\.org/v/s/([^/]+)(.*)#', $url, $matches)) {
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$url = 'https://' . $matches[2] . $matches[3];
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}
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// Separa a URL em suas partes componentes
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$parts = parse_url($url);
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// Reconstrói a URL base
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$cleanedUrl = $parts['scheme'] . '://' . $parts['host'];
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// Adiciona o caminho se existir
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if (isset($parts['path'])) {
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$cleanedUrl .= $parts['path'];
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}
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return $cleanedUrl;
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}
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/**
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* Obtém regras específicas para um domínio
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*
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* @param string $domain Domínio para buscar regras
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* @return array|null Regras do domínio ou null se não encontrar
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*/
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private function getDomainRules($domain)
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{
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return $this->rules->getDomainRules($domain);
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}
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/**
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* Remove classes específicas de um elemento
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*
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* @param DOMElement $element Elemento DOM
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* @param array $classesToRemove Classes a serem removidas
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*/
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private function removeClassNames($element, $classesToRemove)
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{
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if (!$element->hasAttribute('class')) {
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return;
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}
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$classes = explode(' ', $element->getAttribute('class'));
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$newClasses = array_filter($classes, function ($class) use ($classesToRemove) {
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return !in_array(trim($class), $classesToRemove);
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});
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if (empty($newClasses)) {
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$element->removeAttribute('class');
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} else {
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$element->setAttribute('class', implode(' ', $newClasses));
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}
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}
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/**
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* Corrige URLs relativas em um documento DOM
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*
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* @param DOMDocument $dom Documento DOM
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* @param DOMXPath $xpath Objeto XPath
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* @param string $baseUrl URL base para correção
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*/
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private function fixRelativeUrls($dom, $xpath, $baseUrl)
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{
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$parsedBase = parse_url($baseUrl);
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$baseHost = $parsedBase['scheme'] . '://' . $parsedBase['host'];
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$elements = $xpath->query("//*[@src]");
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if ($elements !== false) {
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foreach ($elements as $element) {
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if ($element instanceof DOMElement) {
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$src = $element->getAttribute('src');
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if (strpos($src, 'base64') !== false) {
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continue;
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}
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if (strpos($src, 'http') !== 0 && strpos($src, '//') !== 0) {
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$src = ltrim($src, '/');
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$element->setAttribute('src', $baseHost . '/' . $src);
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}
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}
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}
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}
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$elements = $xpath->query("//*[@href]");
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if ($elements !== false) {
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foreach ($elements as $element) {
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if ($element instanceof DOMElement) {
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$href = $element->getAttribute('href');
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if (strpos($href, 'mailto:') === 0 ||
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strpos($href, 'tel:') === 0 ||
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strpos($href, 'javascript:') === 0 ||
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strpos($href, '#') === 0) {
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continue;
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}
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if (strpos($href, 'http') !== 0 && strpos($href, '//') !== 0) {
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$href = ltrim($href, '/');
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$element->setAttribute('href', $baseHost . '/' . $href);
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}
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}
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}
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}
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}
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/**
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* Processa o conteúdo HTML aplicando regras do domínio
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*
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* @param string $content Conteúdo HTML
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* @param string $host Nome do host
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* @param string $url URL completa
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* @return string Conteúdo processado
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*/
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private function processContent($content, $host, $url)
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{
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$dom = new DOMDocument();
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$dom->preserveWhiteSpace = true;
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libxml_use_internal_errors(true);
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@$dom->loadHTML(mb_convert_encoding($content, 'HTML-ENTITIES', 'UTF-8'), LIBXML_HTML_NOIMPLIED | LIBXML_HTML_NODEFDTD);
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libxml_clear_errors();
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$xpath = new DOMXPath($dom);
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// Processa tags canônicas
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$canonicalLinks = $xpath->query("//link[@rel='canonical']");
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if ($canonicalLinks !== false) {
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// Remove todas as tags canônicas existentes
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|
foreach ($canonicalLinks as $link) {
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if ($link->parentNode) {
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$link->parentNode->removeChild($link);
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}
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}
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}
|
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// Adiciona nova tag canônica com a URL original
|
|
$head = $xpath->query('//head')->item(0);
|
|
if ($head) {
|
|
$newCanonical = $dom->createElement('link');
|
|
$newCanonical->setAttribute('rel', 'canonical');
|
|
$newCanonical->setAttribute('href', $url);
|
|
$head->appendChild($newCanonical);
|
|
}
|
|
|
|
// Sempre aplica a correção de URLs relativas
|
|
$this->fixRelativeUrls($dom, $xpath, $url);
|
|
|
|
$domainRules = $this->getDomainRules($host);
|
|
if (isset($domainRules['customStyle'])) {
|
|
$styleElement = $dom->createElement('style');
|
|
$styleElement->appendChild($dom->createTextNode($domainRules['customStyle']));
|
|
$dom->getElementsByTagName('head')[0]->appendChild($styleElement);
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
if (isset($domainRules['classAttrRemove'])) {
|
|
foreach ($domainRules['classAttrRemove'] as $class) {
|
|
$elements = $xpath->query("//*[contains(@class, '$class')]");
|
|
if ($elements !== false) {
|
|
foreach ($elements as $element) {
|
|
$this->removeClassNames($element, [$class]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (isset($domainRules['idElementRemove'])) {
|
|
foreach ($domainRules['idElementRemove'] as $id) {
|
|
$elements = $xpath->query("//*[@id='$id']");
|
|
if ($elements !== false) {
|
|
foreach ($elements as $element) {
|
|
if ($element->parentNode) {
|
|
$element->parentNode->removeChild($element);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (isset($domainRules['classElementRemove'])) {
|
|
foreach ($domainRules['classElementRemove'] as $class) {
|
|
$elements = $xpath->query("//*[contains(@class, '$class')]");
|
|
if ($elements !== false) {
|
|
foreach ($elements as $element) {
|
|
if ($element->parentNode) {
|
|
$element->parentNode->removeChild($element);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (isset($domainRules['scriptTagRemove'])) {
|
|
foreach ($domainRules['scriptTagRemove'] as $script) {
|
|
// Busca por tags script com src ou conteúdo contendo o script
|
|
$scriptElements = $xpath->query("//script[contains(@src, '$script')] | //script[contains(text(), '$script')]");
|
|
if ($scriptElements !== false) {
|
|
foreach ($scriptElements as $element) {
|
|
if ($element->parentNode) {
|
|
$element->parentNode->removeChild($element);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Busca por tags link que são scripts
|
|
$linkElements = $xpath->query("//link[@as='script' and contains(@href, '$script') and @type='application/javascript']");
|
|
if ($linkElements !== false) {
|
|
foreach ($linkElements as $element) {
|
|
if ($element->parentNode) {
|
|
$element->parentNode->removeChild($element);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
$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);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Adiciona CTA Marreta
|
|
$body = $xpath->query('//body')->item(0);
|
|
if ($body) {
|
|
$marretaDiv = $dom->createElement('div');
|
|
$marretaDiv->setAttribute('style', 'z-index: 99999; position: fixed; top: 0; right: 4px; background: rgb(37,99,235); color: #fff; font-size: 13px; line-height: 1em; padding: 6px; margin: 0px; overflow: hidden; border-bottom-left-radius: 3px; border-bottom-right-radius: 3px; font-family: Tahoma, sans-serif;');
|
|
$marretaHtml = $dom->createDocumentFragment();
|
|
$marretaHtml->appendXML('Chapéu de paywall é <a href="'.SITE_URL.'" style="color: #fff; text-decoration: underline; font-weight: bold;" target="_blank">Marreta</a>!');
|
|
$marretaDiv->appendChild($marretaHtml);
|
|
$body->appendChild($marretaDiv);
|
|
}
|
|
|
|
return $dom->saveHTML();
|
|
}
|
|
}
|