$value){
$html =
str_replace(
"{%{$key}%}",
$value,
$html
);
}
return trim($html);
}
public function getthemeclass($raw = true){
if(
isset($_COOKIE["theme"]) &&
$_COOKIE["theme"] == "cream"
){
$body_class = "theme-white ";
}else{
$body_class = "";
}
if(
$raw &&
$body_class != ""
){
return ' class="' . rtrim($body_class) . '"';
}
return $body_class;
}
public function loadheader(array $get, array $filters, string $page){
echo
$this->load("header.html", [
"title" => trim($get["s"] . " ({$page})"),
"description" => ucfirst($page) . ' search results for "' . htmlspecialchars($get["s"]) . '"',
"index" => "no",
"search" => htmlspecialchars($get["s"]),
"tabs" => $this->generatehtmltabs($page, $get["s"]),
"filters" => $this->generatehtmlfilters($filters, $get),
"body_class" => $this->getthemeclass()
]);
if(
preg_match(
'/bot|wget|curl|python-requests|scrapy|feedfetcher|go-http-client|ruby|universalfeedparser|yahoo\! slurp|spider|rss/i',
$_SERVER["HTTP_USER_AGENT"]
)
){
// bot detected !!
echo
$this->drawerror(
"Tshh, blocked!",
'You were blocked from viewing this page. If you wish to scrape data from 4get, please consider running your own 4get instance or using the API.',
);
die();
}
}
public function drawerror($title, $error){
return
$this->load("search.html", [
"class" => "",
"right-left" => "",
"right-right" => "",
"left" =>
'
' .
'
' . htmlspecialchars($title) . '
' .
$error .
''
]);
}
public function drawtextresult($site, $greentext = null, $duration = null, $keywords, $tabindex = true){
$payload =
'';
// add favicon, link and archive links
$payload .= $this->drawlink($site["url"]);
/*
Draw title + description + filetype
*/
$payload .=
'
';
if($duration !== null){
$payload .=
'' .
htmlspecialchars($duration) .
'
';
}
$payload .=
' ';
}
$payload .=
'';
if(
isset($site["type"]) &&
$site["type"] != "web"
){
$payload .= '
' . strtoupper($site["type"]) . '
';
}
$payload .=
htmlspecialchars($site["title"]) .
'
';
if($greentext !== null){
$payload .=
'' .
htmlspecialchars($greentext) .
'
';
}
if($site["description"] !== null){
$payload .=
'' .
$this->highlighttext($keywords, $site["description"]) .
'
';
}
$payload .= '';
/*
Sublinks
*/
if(
isset($site["sublink"]) &&
!empty($site["sublink"])
){
usort($site["sublink"], function($a, $b){
return strlen($a["description"]) > strlen($b["description"]);
});
$payload .=
'' .
'
';
$opentr = false;
for($i=0; $i' .
'' .
htmlspecialchars($site["sublink"][$i]["title"]) .
'
';
if(!empty($site["sublink"][$i]["date"])){
$payload .=
'' .
date("jS M y @ g:ia", $site["sublink"][$i]["date"]) .
'
';
}
if(!empty($site["sublink"][$i]["description"])){
$payload .=
'' .
$this->highlighttext($keywords, $site["sublink"][$i]["description"]) .
'
';
}
$payload .= '';
if($opentr === false){
$payload .= '';
}
}
if($opentr === true){
$payload .= ' | ';
}
$payload .= '
';
}
if(
isset($site["table"]) &&
!empty($site["table"])
){
$payload .= '';
foreach($site["table"] as $title => $value){
$payload .=
'' .
'' . htmlspecialchars($title) . ' | ' .
'' . htmlspecialchars($value) . ' | ' .
'
';
}
$payload .= '
';
}
return $payload . '';
}
public function highlighttext($keywords, $text){
$text = htmlspecialchars($text);
$keywords = explode(" ", $keywords);
$regex = [];
foreach($keywords as $word){
$regex[] = "\b" . preg_quote($word, "/") . "\b";
}
$regex = "/" . implode("|", $regex) . "/i";
return
preg_replace(
$regex,
'${0}',
$text
);
}
function highlightcode($text){
// https://www.php.net/highlight_string
ini_set("highlight.comment", "c-comment");
ini_set("highlight.default", "c-default");
ini_set("highlight.html", "c-default");
ini_set("highlight.keyword", "c-keyword");
ini_set("highlight.string", "c-string");
$text =
trim(
preg_replace(
'/<\/span>$/',
"", // remove stray ending span because of the ',
' '
],
[
"\n", // replace
with newlines
" " // replace html entity to space
],
str_replace(
[
// leading \n<?php ",
"",
"
"
],
"",
highlight_string("', '', $text);
}
return $text;
}
public function drawlink($link){
/*
Add favicon
*/
$host = parse_url($link);
$esc =
explode(
".",
$host["host"],
2
);
if(
count($esc) === 2 &&
$esc[0] == "www"
){
$esc = $esc[1];
}else{
$esc = $esc[0];
}
$esc = substr($esc, 0, 2);
$urlencode = urlencode($link);
$payload =
'' .
'
' .
'
';
/*
Draw link
*/
$parts = explode("/", $link);
$clickurl = "";
// remove trailing /
$c = count($parts) - 1;
if($parts[$c] == ""){
$parts[$c - 1] = $parts[$c - 1] . "/";
unset($parts[$c]);
}
// merge https://site together
$parts = [
$parts[0] . $parts[1] . '//' . $parts[2],
...array_slice($parts, 3, count($parts) - 1)
];
$c = count($parts);
for($i=0; $i<$c; $i++){
if($i !== 0){ $clickurl .= "/"; }
$clickurl .= $parts[$i];
if($i === $c - 1){
$parts[$i] = rtrim($parts[$i], "/");
}
$payload .=
'
' .
htmlspecialchars(urldecode($parts[$i])) .
'';
if($i !== $c - 1){
$payload .= '
';
}
}
return $payload . '
';
}
public function getscraperfilters($page){
$get_scraper = null;
switch($page){
case "web":
$get_scraper = isset($_COOKIE["scraper_web"]) ? $_COOKIE["scraper_web"] : null;
break;
case "images":
$get_scraper = isset($_COOKIE["scraper_images"]) ? $_COOKIE["scraper_images"] : null;
break;
case "videos":
$get_scraper = isset($_COOKIE["scraper_videos"]) ? $_COOKIE["scraper_videos"] : null;
break;
case "news":
$get_scraper = isset($_COOKIE["scraper_news"]) ? $_COOKIE["scraper_news"] : null;
break;
}
if(
isset($_GET["scraper"]) &&
is_string($_GET["scraper"])
){
$get_scraper = $_GET["scraper"];
}else{
if(
isset($_GET["npt"]) &&
is_string($_GET["npt"])
){
$get_scraper = explode(".", $_GET["npt"], 2)[0];
$get_scraper =
preg_replace(
'/[0-9]+$/',
"",
$get_scraper
);
}
}
// add search field
$filters =
[
"s" => [
"option" => "_SEARCH"
]
];
// define default scrapers
switch($page){
case "web":
$filters["scraper"] = [
"display" => "Scraper",
"option" => [
"ddg" => "DuckDuckGo",
"brave" => "Brave",
"google" => "Google",
"mojeek" => "Mojeek",
"marginalia" => "Marginalia",
"wiby" => "wiby"
]
];
break;
case "images":
$filters["scraper"] = [
"display" => "Scraper",
"option" => [
"ddg" => "DuckDuckGo",
"yandex" => "Yandex",
"google" => "Google"
]
];
break;
case "videos":
$filters["scraper"] = [
"display" => "Scraper",
"option" => [
"yt" => "YouTube",
"ddg" => "DuckDuckGo",
"google" => "Google"
]
];
break;
case "news":
$filters["scraper"] = [
"display" => "Scraper",
"option" => [
"ddg" => "DuckDuckGo",
"brave" => "Brave",
"google" => "Google",
"mojeek" => "Mojeek"
]
];
break;
}
// get scraper name from user input, or default out to preferred scraper
$scraper_out = null;
$first = true;
foreach($filters["scraper"]["option"] as $scraper_name => $scraper_pretty){
if($first === true){
$first = $scraper_name;
}
if($scraper_name == $get_scraper){
$scraper_out = $scraper_name;
}
}
if($scraper_out === null){
$scraper_out = $first;
}
switch($scraper_out){
case "ddg":
include "scraper/ddg.php";
$lib = new ddg();
break;
case "brave":
include "scraper/brave.php";
$lib = new brave();
break;
case "yt";
include "scraper/youtube.php";
$lib = new youtube();
break;
case "yandex":
include "scraper/yandex.php";
$lib = new yandex();
break;
case "google":
include "scraper/google.php";
$lib = new google();
break;
case "mojeek":
include "scraper/mojeek.php";
$lib = new mojeek();
break;
case "marginalia":
include "scraper/marginalia.php";
$lib = new marginalia();
break;
case "wiby":
include "scraper/wiby.php";
$lib = new wiby();
break;
}
// set scraper on $_GET
$_GET["scraper"] = $scraper_out;
// set nsfw on $_GET
if(
isset($_COOKIE["nsfw"]) &&
!isset($_GET["nsfw"])
){
$_GET["nsfw"] = $_COOKIE["nsfw"];
}
return
[
$lib,
array_merge_recursive(
$filters,
$lib->getfilters($page)
)
];
}
public function parsegetfilters($parameters, $whitelist){
$sanitized = [];
// add npt token
if(
isset($parameters["npt"]) &&
is_string($parameters["npt"])
){
$sanitized["npt"] = $parameters["npt"];
}else{
$sanitized["npt"] = false;
}
// we're iterating over $whitelist, so
// you can't polluate $sanitized with useless
// parameters
foreach($whitelist as $parameter => $value){
if(isset($parameters[$parameter])){
if(!is_string($parameters[$parameter])){
$sanitized[$parameter] = null;
continue;
}
// parameter is already set, use that value
$sanitized[$parameter] = $parameters[$parameter];
}else{
// parameter is not set, add it
if(is_string($value["option"])){
// special field: set default value manually
switch($value["option"]){
case "_DATE":
// no date set
$sanitized[$parameter] = false;
break;
case "_SEARCH":
// no search set
$sanitized[$parameter] = "";
break;
}
}else{
// set a default value
$sanitized[$parameter] = array_keys($value["option"])[0];
}
}
// sanitize input
if(is_array($value["option"])){
if(
!in_array(
$sanitized[$parameter],
$keys = array_keys($value["option"])
)
){
$sanitized[$parameter] = $keys[0];
}
}else{
// sanitize search & string
switch($value["option"]){
case "_DATE":
if($sanitized[$parameter] !== false){
$sanitized[$parameter] = strtotime($sanitized[$parameter]);
if($sanitized[$parameter] <= 0){
$sanitized[$parameter] = false;
}
}
break;
case "_SEARCH":
// get search string & bang
$sanitized[$parameter] = trim($sanitized[$parameter]);
$sanitized["bang"] = "";
if(
strlen($sanitized[$parameter]) !== 0 &&
$sanitized[$parameter][0] == "!"
){
$sanitized[$parameter] = explode(" ", $sanitized[$parameter], 2);
$sanitized["bang"] = trim($sanitized[$parameter][0]);
if(count($sanitized[$parameter]) === 2){
$sanitized[$parameter] = trim($sanitized[$parameter][1]);
}else{
$sanitized[$parameter] = "";
}
$sanitized["bang"] = ltrim($sanitized["bang"], "!");
}
$sanitized[$parameter] = ltrim($sanitized[$parameter], "! \n\r\t\v\x00");
}
}
}
// invert dates if needed
if(
isset($sanitized["older"]) &&
isset($sanitized["newer"]) &&
$sanitized["newer"] !== false &&
$sanitized["older"] !== false &&
$sanitized["newer"] > $sanitized["older"]
){
// invert
[
$sanitized["older"],
$sanitized["newer"]
] = [
$sanitized["newer"],
$sanitized["older"]
];
}
return $sanitized;
}
public function s_to_timestamp($seconds){
if(is_string($seconds)){
return "LIVE";
}
return ($seconds >= 60) ? ltrim(gmdate("H:i:s", $seconds), ":0") : gmdate("0:s", $seconds);
}
public function generatehtmltabs($page, $query){
$html = null;
foreach(["web", "images", "videos", "news"] as $type){
$html .= '' . ucfirst($type) . '';
}
return $html;
}
public function generatehtmlfilters($filters, $params){
$html = null;
foreach($filters as $filter_name => $filter_values){
if(!isset($filter_values["display"])){
continue;
}
$output = true;
$tmp =
'' .
'
' . htmlspecialchars($filter_values["display"]) . '
';
if(is_array($filter_values["option"])){
$tmp .= '
';
}else{
switch($filter_values["option"]){
case "_DATE":
$tmp .= '
$value){
if(
$value == null ||
$value == false ||
$key == "npt" ||
$key == "extendedsearch" ||
$value == "any" ||
$value == "all" ||
(
$ommit === true &&
$key == "s"
)
){
continue;
}
$out[$key] = $value;
}
return http_build_query($out);
}
public function htmlimage($image, $format){
if(
preg_match(
'/^data:/',
$image
)
){
return htmlspecialchars($image);
}
return "/proxy.php?i=" . urlencode($image) . "&s=" . $format;
}
public function htmlnextpage($gets, $npt, $page){
$query = $this->buildquery($gets);
return $page . "?" . $query . "&npt=" . $npt;
}
}