/**
* hook called on route, all
* check if $returnvalue['handler'] to see if we need to replace it
* if the handler is an original handler, we want to foward it to the new url
*
* @param type $hook
* @param type $type
* @param type $returnvalue
* @param type $params
* @return array
*/
function router($hook, $type, $returnvalue, $params)
{
if (elgg_get_config('pagehandler_hijack')) {
return $returnvalue;
}
$handlers = get_replacement_handlers();
if (in_array($returnvalue['handler'], array_keys($handlers))) {
// we have been given an old handler -> we should forward to the replacement
// probably from an old link or something
$currenturl = current_page_url();
//get everything after the pagehandler
$afterhandler = str_replace(elgg_get_site_url() . $returnvalue['handler'], "", $currenturl);
$newurl = elgg_get_site_url() . $handlers[$returnvalue['handler']] . $afterhandler;
// forward to the new url
forward($newurl);
}
if (in_array($returnvalue['handler'], $handlers)) {
// we need to do something about it
// get the original handler
$original = array_search($returnvalue['handler'], $handlers);
if (!empty($original)) {
// reset the context for non-hijack aware code
elgg_set_context($original);
// let the system load content for the original handler
$returnvalue['handler'] = $original;
$returnvalue['identifier'] = $original;
// set a flag so we don't infinite loop ourselves in route hooks
elgg_set_config('pagehandler_hijack', true);
return elgg_trigger_plugin_hook('route', $original, null, $returnvalue);
}
}
}
function handler_replace($content)
{
$handlers = get_replacement_handlers();
foreach ($handlers as $original => $replacement) {
$search = elgg_get_site_url() . $original . "/";
$replace = elgg_get_site_url() . $replacement . "/";
$content = str_ireplace($search, $replace, $content);
}
return $content;
}
/**
* setup our init code
*/
function init()
{
elgg_register_library(PLUGIN_ID . ':upgrades', __DIR__ . '/lib/upgrades.php');
// add in our own css
$url = elgg_get_simplecache_url('css', 'pagehandler_hijack');
elgg_register_css('pagehandler_hijack', $url);
//register action to save our plugin settings
elgg_register_action("pagehandler_hijack/settings/save", __DIR__ . "/actions/settings.php", 'admin');
//register plugin hooks
// catch-all needed to catch our replacements
elgg_register_plugin_hook_handler('route', 'all', __NAMESPACE__ . '\\router', 0);
elgg_register_plugin_hook_handler('view', 'all', __NAMESPACE__ . '\\linkfix');
elgg_register_plugin_hook_handler('entity:url', 'all', __NAMESPACE__ . '\\entity_url', 999);
elgg_register_plugin_hook_handler('prepare', 'all', __NAMESPACE__ . '\\prepare_notification', 999);
elgg_register_plugin_hook_handler('email', 'system', __NAMESPACE__ . '\\prepare_email', 999);
$handlers = array_keys(get_replacement_handlers());
foreach ($handlers as $h) {
// specific handlers needed to catch route by priority since 'all' happens last regardless
elgg_register_plugin_hook_handler('route', $h, __NAMESPACE__ . '\\router', 0);
}
elgg_register_event_handler('upgrade', 'system', __NAMESPACE__ . '\\upgrades');
}
<?php
namespace MBeckett\pagehandler_hijack;
elgg_load_css('pagehandler_hijack');
$title = elgg_echo('pagehandler_hijack:settings');
//get current pagehandlers
// private API, but no choice, was out-voted
$handlers = array_filter(array_keys(_elgg_services()->router->getPageHandlers()));
sort($handlers);
echo "<div style=\"margin: 15px;\">";
echo "<h1>" . elgg_echo('pagehandler_hijack:settings') . "</h1><br><br>";
echo elgg_echo('pagehandler_hijack:disclaimer') . "<br><br>";
// get an array of our hijacks
$hijacks = get_replacement_handlers();
echo "<div class=\"pagehandler_hijack_form_element_wrapper\">";
echo "<table><tr>";
echo "<td class=\"pagehandler_hijack_thead\">" . elgg_echo('pagehandler_hijack:default') . "</td>";
echo "<td class=\"pagehandler_hijack_thead\">" . elgg_echo('pagehandler_hijack:replacement') . "</td>";
echo "</tr>";
$count = 0;
foreach ($handlers as $handler) {
$count++;
if ($count % 2) {
$zebra = "phh-odd";
} else {
$zebra = "phh-even";
}
echo "<tr>";
echo "<td class=\"pagehandler_hijack_element_default {$zebra}\">{$handler}</td>";
echo "<td class=\"pagehandler_hijack_element_replacement {$zebra}\">";