adlerka.top/lib/routing.php

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<?php
function getProtocol(){
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if (!empty($_SERVER['HTTP_X_FORWARDED_PROTO'])) {
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return "https://";
} else {
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/** @noinspection HttpUrlsUsage */
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return "http://";
}
}
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function initRouter(){
global $routerRequest;
global $routerConfig;
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$routerRequest["protocol"] = getProtocol();
$routerRequest["requestAddress"] = array_slice(explode('.', $_SERVER['HTTP_HOST']), -3, 3); //get the last 3 elements
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$needsRedirect = false;
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if(count($routerRequest["requestAddress"]) < 3){
// Root domain accessed directly
$needsRedirect = true;
} else {
$routerRequest["subdomain"] = basename($routerRequest["requestAddress"][0]);
$routerRequest["domain"] = basename($routerRequest["requestAddress"][1]);
$routerRequest["tld"] = basename($routerRequest["requestAddress"][2]);
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$routerRequest["page_name"] = basename($_SERVER["QUERY_STRING"]);
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if (empty($routerRequest["subdomain"])) {
// Subdomain is missing
$needsRedirect = true;
} elseif (empty($routerRequest["page_name"])) {
// Page name is empty
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$needsRedirect = true;
}
}
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if ($needsRedirect) {
$redirectAddress = implode('.', $routerRequest["requestAddress"]);
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if (empty($routerRequest["page_name"])) {
// Redirect without page name
header("Location: " . $routerRequest["protocol"] . $redirectAddress . "/");
} else {
// Redirect with default page name
header("Location: " . $routerRequest["protocol"] . $redirectAddress . "/" . $routerConfig["default_page"]);
}
exit; // Ensure that the script stops execution after the redirect header
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}
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return !$needsRedirect;
}
function renderDynamicPage($page_file)
{
require_once $page_file;
return render();
}
function getPage($page_name = null){
global $routerConfig;
global $routerRequest;
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if(!$page_name){
$page_name = $routerRequest["page_name"];
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}
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$dynamic_page_file = $routerConfig["page_dir"] . $routerRequest["subdomain"] . "/" . $page_name . ".php";
$page_file = $routerConfig["page_dir"] . $routerRequest["subdomain"] . "/" . $page_name . ".html";
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$dynamic_page_file_global = $routerConfig["page_dir"] . "global/" . $page_name . ".php";
$page_file_global = $routerConfig["page_dir"] . "global/" . $page_name . ".html";
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$skeleton = file_get_contents($routerConfig["template_dir"] . "skeleton.html");
$nav = file_get_contents($routerConfig["template_dir"] . "nav.html");
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if (file_exists($dynamic_page_file_global)){
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$page = renderDynamicPage($dynamic_page_file_global);
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}
elseif (file_exists($page_file_global)){
$page = file_get_contents($page_file_global);
}
elseif (file_exists($dynamic_page_file)){
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$page = renderDynamicPage($dynamic_page_file);
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}
elseif (file_exists($page_file)){
$page = file_get_contents($page_file);
}
else{
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$page = file_get_contents($routerConfig["template_dir"] . "404.html");
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}
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$navpages = generateNavigation();
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$nav = str_replace("__NAV_PAGES__", $navpages, $nav);
$out = $skeleton;
$out = str_replace("__TEMPLATE__NAV__", $nav, $out);
$out = str_replace("__TEMPLATE__PAGE__", $page, $out);
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return str_replace("__TEMPLATE_PAGE_NAME__", $page_name, $out);
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}