shimmie2/core/urls.php

115 lines
2.7 KiB
PHP

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