Friendica Communications Platform (please note that this is a clone of the repository at github, issues are handled there) https://friendi.ca
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<?php
namespace Friendica\Module\Search;
use Friendica\Content\Nav;
use Friendica\Content\Pager;
use Friendica\Content\Text\HTML;
use Friendica\Content\Widget;
use Friendica\Core\Cache\Cache as CacheClass;
use Friendica\Core\Config;
use Friendica\Core\L10n;
use Friendica\Core\Logger;
use Friendica\Core\Renderer;
use Friendica\Core\Session;
use Friendica\Database\DBA;
use Friendica\DI;
use Friendica\Model\Contact;
use Friendica\Model\Item;
use Friendica\Model\Term;
use Friendica\Module\BaseSearchModule;
use Friendica\Network\HTTPException;
use Friendica\Util\Strings;
class Index extends BaseSearchModule
{
public static function content(array $parameters = [])
{
$search = (!empty($_GET['q']) ? Strings::escapeTags(trim(rawurldecode($_GET['q']))) : '');
if (Config::get('system', 'block_public') && !Session::isAuthenticated()) {
throw new HTTPException\ForbiddenException(L10n::t('Public access denied.'));
}
if (Config::get('system', 'local_search') && !Session::isAuthenticated()) {
$e = new HTTPException\ForbiddenException(L10n::t('Only logged in users are permitted to perform a search.'));
$e->httpdesc = L10n::t('Public access denied.');
throw $e;
}
if (Config::get('system', 'permit_crawling') && !Session::isAuthenticated()) {
// Default values:
// 10 requests are "free", after the 11th only a call per minute is allowed
$free_crawls = intval(Config::get('system', 'free_crawls'));
if ($free_crawls == 0)
$free_crawls = 10;
$crawl_permit_period = intval(Config::get('system', 'crawl_permit_period'));
if ($crawl_permit_period == 0)
$crawl_permit_period = 10;
$remote = $_SERVER['REMOTE_ADDR'];
$result = DI::cache()->get('remote_search:' . $remote);
if (!is_null($result)) {
$resultdata = json_decode($result);
if (($resultdata->time > (time() - $crawl_permit_period)) && ($resultdata->accesses > $free_crawls)) {
throw new HTTPException\TooManyRequestsException(L10n::t('Only one search per minute is permitted for not logged in users.'));
}
DI::cache()->set('remote_search:' . $remote, json_encode(['time' => time(), 'accesses' => $resultdata->accesses + 1]), CacheClass::HOUR);
} else {
DI::cache()->set('remote_search:' . $remote, json_encode(['time' => time(), 'accesses' => 1]), CacheClass::HOUR);
}
}
if (local_user()) {
DI::page()['aside'] .= Widget\SavedSearches::getHTML('search?q=' . urlencode($search), $search);
}
Nav::setSelected('search');
$tag = false;
if (!empty($_GET['tag'])) {
$tag = true;
$search = '#' . Strings::escapeTags(trim(rawurldecode($_GET['tag'])));
}
// contruct a wrapper for the search header
$o = Renderer::replaceMacros(Renderer::getMarkupTemplate('content_wrapper.tpl'), [
'name' => 'search-header',
'$title' => L10n::t('Search'),
'$title_size' => 3,
'$content' => HTML::search($search, 'search-box', false)
]);
if (!$search) {
return $o;
}
if (strpos($search, '#') === 0) {
$tag = true;
$search = substr($search, 1);
}
self::tryRedirectToProfile($search);
if (strpos($search, '@') === 0 || strpos($search, '!') === 0) {
return self::performContactSearch($search);
}
self::tryRedirectToPost($search);
if (!empty($_GET['search-option'])) {
switch ($_GET['search-option']) {
case 'fulltext':
break;
case 'tags':
$tag = true;
break;
case 'contacts':
return self::performContactSearch($search, '@');
case 'forums':
return self::performContactSearch($search, '!');
}
}
$tag = $tag || Config::get('system', 'only_tag_search');
// Here is the way permissions work in the search module...
// Only public posts can be shown
// OR your own posts if you are a logged in member
// No items will be shown if the member has a blocked profile wall.
$pager = new Pager(DI::args()->getQueryString());
if ($tag) {
Logger::info('Start tag search.', ['q' => $search]);
$condition = [
"(`uid` = 0 OR (`uid` = ? AND NOT `global`))
AND `otype` = ? AND `type` = ? AND `term` = ?",
local_user(), Term::OBJECT_TYPE_POST, Term::HASHTAG, $search
];
$params = [
'order' => ['received' => true],
'limit' => [$pager->getStart(), $pager->getItemsPerPage()]
];
$terms = DBA::select('term', ['oid'], $condition, $params);
$itemids = [];
while ($term = DBA::fetch($terms)) {
$itemids[] = $term['oid'];
}
DBA::close($terms);
if (!empty($itemids)) {
$params = ['order' => ['id' => true]];
$items = Item::selectForUser(local_user(), [], ['id' => $itemids], $params);
$r = Item::inArray($items);
} else {
$r = [];
}
} else {
Logger::info('Start fulltext search.', ['q' => $search]);
$condition = [
"(`uid` = 0 OR (`uid` = ? AND NOT `global`))
AND `body` LIKE CONCAT('%',?,'%')",
local_user(), $search
];
$params = [
'order' => ['id' => true],
'limit' => [$pager->getStart(), $pager->getItemsPerPage()]
];
$items = Item::selectForUser(local_user(), [], $condition, $params);
$r = Item::inArray($items);
}
if (!DBA::isResult($r)) {
info(L10n::t('No results.'));
return $o;
}
if ($tag) {
$title = L10n::t('Items tagged with: %s', $search);
} else {
$title = L10n::t('Results for: %s', $search);
}
$o .= Renderer::replaceMacros(Renderer::getMarkupTemplate('section_title.tpl'), [
'$title' => $title
]);
Logger::info('Start Conversation.', ['q' => $search]);
$o .= conversation(DI::app(), $r, $pager, 'search', false, false, 'commented', local_user());
$o .= $pager->renderMinimal(count($r));
return $o;
}
/**
* Tries to redirect to a local profile page based on the input.
*
* This method separates logged in and anonymous users. Logged in users can trigger contact probes to import
* non-existing contacts while anonymous users can only trigger a local lookup.
*
* Formats matched:
* - @user@domain
* - user@domain
* - Any fully-formed URL
*
* @param string $search
* @throws HTTPException\InternalServerErrorException
* @throws \ImagickException
*/
private static function tryRedirectToProfile(string $search)
{
$isUrl = !empty(parse_url($search, PHP_URL_SCHEME));
$isAddr = (bool)preg_match('/^@?([a-z0-9.-_]+@[a-z0-9.-_:]+)$/i', trim($search), $matches);
if (!$isUrl && !$isAddr) {
return;
}
if ($isAddr) {
$search = $matches[1];
}
if (local_user()) {
// User-specific contact URL/address search
$contact_id = Contact::getIdForURL($search, local_user());
if (!$contact_id) {
// User-specific contact URL/address search and probe
$contact_id = Contact::getIdForURL($search);
}
} else {
// Cheaper local lookup for anonymous users, no probe
if ($isAddr) {
$contact = Contact::selectFirst(['id' => 'cid'], ['addr' => $search, 'uid' => 0]);
} else {
$contact = Contact::getDetailsByURL($search, 0, ['cid' => 0]);
}
if (DBA::isResult($contact)) {
$contact_id = $contact['cid'];
}
}
if (!empty($contact_id)) {
DI::baseUrl()->redirect('contact/' . $contact_id);
}
}
/**
* Fetch/search a post by URL and redirects to its local representation if it was found.
*
* @param string $search
* @throws HTTPException\InternalServerErrorException
*/
private static function tryRedirectToPost(string $search)
{
if (parse_url($search, PHP_URL_SCHEME) == '') {
return;
}
if (local_user()) {
// Post URL search
$item_id = Item::fetchByLink($search, local_user());
if (!$item_id) {
// If the user-specific search failed, we search and probe a public post
$item_id = Item::fetchByLink($search);
}
} else {
// Cheaper local lookup for anonymous users, no probe
$item_id = Item::searchByLink($search);
}
if (!empty($item_id)) {
$item = Item::selectFirst(['guid'], ['id' => $item_id]);
if (DBA::isResult($item)) {
DI::baseUrl()->redirect('display/' . $item['guid']);
}
}
}
}