mirror of
https://github.com/tznb1/TwoNav.git
synced 2025-08-10 08:51:49 +00:00
298 lines
11 KiB
PHP
298 lines
11 KiB
PHP
<?php
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//读取配置
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$config = unserialize( get_db("global_config", "v", ["k" => "icon_config"])) ?? [];
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$config['analysis_timeout'] = (intval($config['analysis_timeout']) >= 3 && intval($config['analysis_timeout']) <= 20) ? intval($config['analysis_timeout']) : 6; //解析超时
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$config['download_timeout'] = (intval($config['download_timeout']) >= 3 && intval($config['download_timeout']) <= 20) ? intval($config['download_timeout']) : 6; //下载超时
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$config['icon_size'] = (intval($config['icon_size']) >= 5 && intval($config['icon_size']) <= 1024) ? intval($config['icon_size']) : 256; //大小限制
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$favicon_url = '';
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//防盗链
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if($config['referer_test'] == 1){
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if(empty($_SERVER['HTTP_REFERER']) || !strstr($_SERVER['HTTP_REFERER'],$_SERVER['HTTP_HOST'])){
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header('HTTP/1.1 404 Not Found');header("status: 404 Not Found");exit('404 Not Found');
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}
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}
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//获取URL
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$url = base64_decode($_GET['url']);
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$url_md5 = md5($url);
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//维护模式/离线模式/关闭服务 > 输出固定图标
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if($global_config['Maintenance'] != 0 || $global_config['offline'] == '1' || $config['o_switch'] == '0' || !is_subscribe('bool')){
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echo_link_type_icon();
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}
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//如果不是http(s)则根据类型输出固定图标
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if(!preg_match("/^(http:\/\/|https:\/\/)/",$url)){
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echo_link_type_icon();
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}else{
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$uri_part = parse_url($url);
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$url_root = $uri_part['scheme'] . '://' . $uri_part['host'] . (isset($uri_part['port']) ? ':' . $uri_part['port'] : '');
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}
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//检查目录 > 不存在则自动创建 > 创建失败显示错误图标
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if(!Check_Path(DIR.'/data/icon')){
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echo_icon(DIR . '/templates/admin/img/error.svg',$config);
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}
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//读取缓存 > 存在且可用则输出
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$cache_data = get_db('global_icon','*',['url_md5'=>$url_md5]);
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if(!empty($cache_data) && $cache_data['update_time'] > time() - intval($config['server_cache_time']) && is_file(DIR . '/data/icon/' . $cache_data['file_name'])){
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echo_icon(DIR . '/data/icon/' . $cache_data['file_name'],$config,$cache_data);
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}
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//缓存不可用
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//获取URL的html内容
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$html = get_html($url,$config['analysis_timeout']);
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//获取html失败
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if(empty($html)){
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backup_api($url,$config); //调用备选接口
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}
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//html获取成功>尝试解析
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try {
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$doc = new DOMDocument();
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@$doc->loadHTML($html);
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$links = $doc->getElementsByTagName('link');
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//后续可以考虑将所有声明的图标加入数组,然后按特定规则排序,实现多图标时获取较大尺寸的图标
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foreach ($links as $link) {
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if (in_array($link->getAttribute('rel'),['shortcut icon','icon','alternate icon','apple-touch-icon'])) {
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$favicon_url = $link->getAttribute('href');
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break;
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}
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}
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}catch (Exception $e) {
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//解析异常,不做处理!下面继续尝试其他方法获取!
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}
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//解析失败(可能是未设置图标)
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if(empty($favicon_url)){
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//尝试获取根目录的favicon.ico
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$res = down_ico($url_root.'/favicon.ico','./data/icon/',$url,$config['download_timeout']);
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if($res){
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echo_icon(DIR . '/data/icon/'.$url_md5.".ico",$config);
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}
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//调用备选接口
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backup_api($url,$config);
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}
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//解析到图标
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$favicon_url = url_patch($favicon_url,$url);
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//if 如果图标类型是base64或者svg则不需要下载
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//匹配图标类型>下载>输出
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$suffix = strtolower(end(explode('.',$favicon_url)));
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$suffix = strtolower(reset(explode('?',$suffix)));
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$suffix = preg_match('/^(jpg|jpeg|png|ico|bmp|svg|webp)$/i',$suffix) ? $suffix : 'ico';
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//下载图标 > 成功则输出
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$res = down_ico($favicon_url,'./data/icon/',$url,$config['download_timeout']);
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if($res){
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echo_icon(DIR . '/data/icon/'.$url_md5.".$suffix",$config);
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}else{
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echo_link_type_icon();
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}
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//使用备用接口
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function backup_api($url,$config){
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global $uri_part,$url_root;
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//未设置时直接输出ie图标
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$backup_api = intval($config['backup_api']);
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if($backup_api == 0){
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echo_icon(DIR . '/templates/admin/img/ie.svg',$config);
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}elseif($backup_api == 6){
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$res = down_ico('https://api.iowen.cn/favicon/'.parse_url($url)['host'].'.png','./data/icon/','',$config['download_timeout']);
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if($res){
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echo_icon(DIR . '/data/icon/'.$GLOBALS['url_md5'].".png",$config);
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}
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}elseif($backup_api == 2){
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$res = down_ico('https://favicon.png.pub/v1/'.base64_encode($url_root),'./data/icon/','',$config['download_timeout']);
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if($res){
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echo_icon(DIR . '/data/icon/'.$GLOBALS['url_md5'].".png",$config);
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}
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}
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//如果都失败,则输出默认图标
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echo_icon(DIR . '/templates/admin/img/ie.svg',$config);
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}
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//检测URL自动补全
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function url_patch($favicon_url,$url){
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global $uri_part,$url_root;
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//包含协议表示URL完整,直接返回
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if(strpos($favicon_url, '://')){
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return $favicon_url;
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}
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//忽略协议的绝对路径
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if(strpos($favicon_url, '//') === 0 ) {
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return $uri_part['scheme'] . ':' . $favicon_url;
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}
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//位于根目录
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if(strpos($favicon_url, '/') === 0 ){
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return $url_root.$favicon_url;
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}
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//当前目录
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if(strpos($favicon_url, './') === 0){
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return $url_root . $uri_part['path'] . substr($favicon_url, 2);
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}
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//向上N级目录
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if(strpos($favicon_url, '../') === 0){
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$N = substr_count($favicon_url,'../');
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$url_temp = $uri_part['path'];
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for ($i = 0; $i < $N; $i++) {
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$url_temp = dirname($url_temp);
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$favicon_url = preg_replace('/^\.\.\//', '', $favicon_url);
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}
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return $url_root . $url_temp . $favicon_url;
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}
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//base64
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//SVG
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//默认路径
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return $url_root . $uri_part['path'] . $favicon_url;
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}
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//获取html
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function get_html($url,$TIMEOUT = 5){
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try {
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$c = curl_init();
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curl_setopt($c, CURLOPT_URL, $url);
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curl_setopt($c, CURLOPT_RETURNTRANSFER, 1);
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curl_setopt($c, CURLOPT_FAILONERROR, 1);
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curl_setopt($c, CURLOPT_SSL_VERIFYPEER, false);
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curl_setopt($c, CURLOPT_SSL_VERIFYHOST, false);
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curl_setopt($c, CURLOPT_FOLLOWLOCATION, 1);
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curl_setopt($c, CURLOPT_TIMEOUT, $TIMEOUT);
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curl_setopt($c, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.69 Safari/537.36');
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$data = curl_exec($c);
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//如果是gzip则解压
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$prefix = dechex(ord($data[0])) . dechex(ord($data[1]));
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if(strtolower($prefix) == '1f8b'){
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$data = gzdecode($data);
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}
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curl_close($c);
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return $data;
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}catch (Exception $e) {
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return false;
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}
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}
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function down_ico($ico_url, $savePath = './data/temp/',$referer = '',$TIMEOUT = 60){
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$suffix = strtolower(end(explode('.',$ico_url)));
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$suffix = strtolower(reset(explode('?',$suffix))); //截取?前面的
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if(!preg_match('/^(jpg|jpeg|png|ico|bmp|svg|webp)$/i',$suffix)){
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$suffix = 'ico'; //没匹配到后缀名则默认为ico
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}
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$file = "{$GLOBALS['url_md5']}.{$suffix}";
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$c = curl_init();
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curl_setopt($c, CURLOPT_URL, $ico_url);
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curl_setopt($c, CURLOPT_TIMEOUT, $TIMEOUT);
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curl_setopt($c, CURLOPT_RETURNTRANSFER, 1);
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curl_setopt($c, CURLOPT_HEADER, FALSE);
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curl_setopt($c, CURLOPT_NOBODY, FALSE);
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curl_setopt($c, CURLOPT_SSL_VERIFYPEER, false);
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curl_setopt($c, CURLOPT_SSL_VERIFYHOST, false);
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curl_setopt($c, CURLOPT_FOLLOWLOCATION, 1);
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curl_setopt($c, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/95.0.4638.69 Safari/537.36');
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if(!empty($referer)){
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curl_setopt($c, CURLOPT_REFERER, $referer);
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}
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try{
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$res = curl_exec($c);
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}finally{
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$code = curl_getinfo($c, CURLINFO_HTTP_CODE);
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curl_close($c);
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}
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if ($code == '200') { //状态码正常
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//十六进制取文件头
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$prefix = strtolower( dechex(ord($res[0])) . dechex(ord($res[1])) );
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//根据头判断类型
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if($prefix == '1f8b'){ //gzip解码
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$res = gzdecode($res);
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}elseif( $prefix != '3c73' && strpos($prefix, '3c') === 0){ // <开头视为文本 <?开头是svg除外
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return false;
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}
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//3c73>svg 3c21>html 1f8b>gzip
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//文件大小限制
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if((strlen($res) / 1024)> $GLOBALS['config']['icon_size']){
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return false;
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}
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$fullName = rtrim($savePath, '/') . '/' . $file;
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$type = ['jpg'=>'jpeg','jpeg'=>'jpeg','svg'=>'svg+xml','ico'=>'x-icon']; //类型表
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$mime = $type[$suffix] ?? 'x-icon';
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//黑名单(后期考虑使用在线名单缓存到本地,以便以更好的维护)
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$_md5 = md5($res);
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if($_md5 == 'c531ffbdad1ba93bd84f2398052958dc') return false; //阿里云
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if($_md5 == '05231fb6b69aff47c3f35efe09c11ba0') return false; //一为默认
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if($_md5 == '3ca64f83fdcf25135d87e08af65e68c9') return false; //小z默认
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$data = ['update_time'=>time(),'file_name'=>$file,'file_mime'=>$mime,'ico_url'=>$ico_url,'extend'=>''];
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if(!has_db('global_icon',['url_md5'=>$GLOBALS['url_md5']])){
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$data['url_md5'] = $GLOBALS['url_md5'];
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$data['url'] = $GLOBALS['url'];
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$data['add_time'] = time();
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insert_db('global_icon',$data);
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}else{
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update_db('global_icon',$data,['url_md5'=>$GLOBALS['url_md5']]);
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}
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return file_put_contents($fullName, $res);
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}else{
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return false;
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}
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}
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function echo_icon($path,$config,$db = false){
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//文件不存在时输出固定图标(理论上执行到这里不会出现文件不存在)
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if(!is_file($path)){
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echo_icon(DIR . '/templates/admin/img/ie.svg',$config);
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}
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//如果存在mime类型则直接读取,否则根据文件类型声明(从缓存读取时才会有mime)
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if(empty($db['mime'])){
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$suffix = strtolower(end(explode('.',$path))); //文件类型
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$type = ['jpg'=>'jpeg','jpeg'=>'jpeg','svg'=>'svg+xml','ico'=>'x-icon']; //类型表
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$mime = $type[$suffix] ?? 'x-icon';
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}else{
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$mime = $db['mime'];
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}
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//MIME类型
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header("Content-Type: image/{$mime};text/html; charset=utf-8");
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//缓存时间
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$cache_time = intval($config['browse_cache_time']);
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if($cache_time > 0 ){
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header ("Last-Modified: " .gmdate("D, d M Y H:i:s", empty($db['mime']) ? filemtime($path):$db['mime'] )." GMT"); //更新时间
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header("Expires: " .gmdate("D, d M Y H:i:s", time() + $cache_time)." GMT"); //过期时间 HTTP1.0
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header("Cache-Control: public, max-age={$cache_time}"); //存活时间 HTTP1.1
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}
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//输出文件
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exit(file_get_contents($path,true));
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}
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//根据链接类型输出图标
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function echo_link_type_icon(){
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global $config;$config['browse_cache_time'] = 60;
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if(preg_match("/^(http:\/\/|https:\/\/)/",$GLOBALS['url'])){
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echo_icon(DIR . '/templates/admin/img/ie.svg',$config);
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}elseif(preg_match("/^(ftp:\/\/|ftps:\/\/|sftp:\/\/)/",$GLOBALS['url'])){
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echo_icon(DIR . '/templates/admin/img/ftp.svg',$config);
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}elseif(preg_match("/^magnet:?/",$GLOBALS['url'])){
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echo_icon(DIR . '/templates/admin/img/magnet.svg',$config);
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}elseif(preg_match("/^(tcp:\/\/|udp:\/\/|rtsp:\/\)/",$GLOBALS['url'])){
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echo_icon(DIR . '/templates/admin/img/tcpudp.svg',$config);
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}elseif(preg_match("/^thunder:\/\//",$GLOBALS['url'])){
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echo_icon(DIR . '/templates/admin/img/xunlei.png',$config);
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}else{
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echo_icon(DIR . '/templates/admin/img/ie.svg',$config);
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}
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exit;
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}
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