117 lines
2.7 KiB
PHP
117 lines
2.7 KiB
PHP
<?php
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declare(strict_types=1);
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class Link
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{
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public ?string $page;
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public ?string $query;
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public function __construct(?string $page=null, ?string $query=null)
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{
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$this->page = $page;
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$this->query = $query;
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}
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public function make_link(): string
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{
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return make_link($this->page, $this->query);
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}
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}
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/**
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* Figure out the correct way to link to a page, taking into account
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* things like the nice URLs setting.
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*
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* eg make_link("post/list") becomes "/v2/index.php?q=post/list"
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*/
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function make_link(?string $page=null, ?string $query=null, ?string $fragment=null): string
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{
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global $config;
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if (is_null($page)) {
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$page = $config->get_string(SetupConfig::MAIN_PAGE);
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}
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$page = trim($page, "/");
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$parts = [];
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$install_dir = get_base_href();
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if (SPEED_HAX || $config->get_bool('nice_urls', false)) {
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$parts['path'] = "$install_dir/$page";
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} else {
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$parts['path'] = "$install_dir/index.php";
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$query = empty($query) ? "q=$page" : "q=$page&$query";
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}
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$parts['query'] = $query; // http_build_query($query);
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$parts['fragment'] = $fragment; // http_build_query($hash);
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return unparse_url($parts);
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}
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/**
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* Take the current URL and modify some parameters
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*/
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function modify_current_url(array $changes): string
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{
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return modify_url($_SERVER['REQUEST_URI'], $changes);
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}
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function modify_url(string $url, array $changes): string
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{
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$parts = parse_url($url);
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$params = [];
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if (isset($parts['query'])) {
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parse_str($parts['query'], $params);
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}
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foreach ($changes as $k => $v) {
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if (is_null($v) and isset($params[$k])) {
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unset($params[$k]);
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}
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$params[$k] = $v;
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}
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$parts['query'] = http_build_query($params);
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return unparse_url($parts);
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}
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/**
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* Turn a relative link into an absolute one, including hostname
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*/
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function make_http(string $link): string
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{
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if (str_contains($link, "://")) {
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return $link;
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}
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if (strlen($link) > 0 && $link[0] != '/') {
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$link = get_base_href() . '/' . $link;
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}
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$protocol = is_https_enabled() ? "https://" : "http://";
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$link = $protocol . $_SERVER["HTTP_HOST"] . $link;
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$link = str_replace("/./", "/", $link);
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return $link;
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}
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/**
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* If HTTP_REFERER is set, and not blacklisted, then return it
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* Else return a default $dest
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*/
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function referer_or(string $dest, ?array $blacklist=null): string
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{
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if (empty($_SERVER['HTTP_REFERER'])) {
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return $dest;
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}
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if ($blacklist) {
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foreach ($blacklist as $b) {
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if (str_contains($_SERVER['HTTP_REFERER'], $b)) {
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return $dest;
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}
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}
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}
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return $_SERVER['HTTP_REFERER'];
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}
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