friendica/src/Core/Search.php

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<?php
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/**
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* @copyright Copyright (C) 2010-2021, the Friendica project
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*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
*/
namespace Friendica\Core;
use Friendica\DI;
use Friendica\Model\Contact;
use Friendica\Network\HTTPException;
use Friendica\Object\Search\ContactResult;
use Friendica\Object\Search\ResultList;
use Friendica\Util\Network;
use Friendica\Util\Strings;
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/**
* Specific class to perform searches for different systems. Currently:
* - Probe for contacts
* - Search in the local directory
* - Search in the global directory
*/
class Search
{
const DEFAULT_DIRECTORY = 'https://dir.friendica.social';
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const TYPE_PEOPLE = 0;
const TYPE_FORUM = 1;
const TYPE_ALL = 2;
/**
* Search a user based on his/her profile address
* pattern: @username@domain.tld
*
* @param string $user The user to search for
*
* @return ResultList
* @throws HTTPException\InternalServerErrorException
* @throws \ImagickException
*/
public static function getContactsFromProbe($user)
{
$emptyResultList = new ResultList(1, 0, 1);
if ((filter_var($user, FILTER_VALIDATE_EMAIL) && Network::isEmailDomainValid($user)) ||
(substr(Strings::normaliseLink($user), 0, 7) == "http://")) {
$user_data = Contact::getByURL($user);
if (empty($user_data)) {
return $emptyResultList;
}
if (!in_array($user_data["network"], Protocol::FEDERATED)) {
return $emptyResultList;
}
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$contactDetails = Contact::getByURLForUser($user_data['url'] ?? '', local_user());
$result = new ContactResult(
$user_data['name'] ?? '',
$user_data['addr'] ?? '',
($contactDetails['addr'] ?? '') ?: ($user_data['url'] ?? ''),
$user_data['url'] ?? '',
$user_data['photo'] ?? '',
$user_data['network'] ?? '',
$contactDetails['id'] ?? 0,
$user_data['id'] ?? 0,
$user_data['tags'] ?? ''
);
return new ResultList(1, 1, 1, [$result]);
} else {
return $emptyResultList;
}
}
/**
* Search in the global directory for occurrences of the search string
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*
* @see https://github.com/friendica/friendica-directory/blob/stable/docs/Protocol.md#search
*
* @param string $search
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* @param int $type specific type of searching
* @param int $page
*
* @return ResultList
* @throws HTTPException\InternalServerErrorException
*/
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public static function getContactsFromGlobalDirectory($search, $type = self::TYPE_ALL, $page = 1)
{
$server = DI::config()->get('system', 'directory', self::DEFAULT_DIRECTORY);
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$searchUrl = $server . '/search';
switch ($type) {
case self::TYPE_FORUM:
$searchUrl .= '/forum';
break;
case self::TYPE_PEOPLE:
$searchUrl .= '/people';
break;
}
$searchUrl .= '?q=' . urlencode($search);
if ($page > 1) {
$searchUrl .= '&page=' . $page;
}
$resultJson = DI::httpRequest()->fetch($searchUrl, 0, 'application/json');
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$results = json_decode($resultJson, true);
$resultList = new ResultList(
($results['page'] ?? 0) ?: 1,
$results['count'] ?? 0,
($results['itemsperpage'] ?? 0) ?: 30
);
$profiles = $results['profiles'] ?? [];
foreach ($profiles as $profile) {
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$profile_url = $profile['url'] ?? '';
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$contactDetails = Contact::getByURLForUser($profile_url, local_user());
$result = new ContactResult(
$profile['name'] ?? '',
$profile['addr'] ?? '',
($contactDetails['addr'] ?? '') ?: $profile_url,
$profile_url,
$profile['photo'] ?? '',
Protocol::DFRN,
$contactDetails['cid'] ?? 0,
0,
$profile['tags'] ?? ''
);
$resultList->addResult($result);
}
return $resultList;
}
/**
* Search in the local database for occurrences of the search string
*
* @param string $search
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* @param int $type
* @param int $start
* @param int $itemPage
*
* @return ResultList
* @throws HTTPException\InternalServerErrorException
*/
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public static function getContactsFromLocalDirectory($search, $type = self::TYPE_ALL, $start = 0, $itemPage = 80)
{
Logger::info('Searching', ['search' => $search, 'type' => $type, 'start' => $start, 'itempage' => $itemPage]);
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$contacts = Contact::searchByName($search, $type == self::TYPE_FORUM ? 'community' : '');
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$resultList = new ResultList($start, $itemPage, count($contacts));
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foreach ($contacts as $contact) {
$result = new ContactResult(
$contact["name"],
$contact["addr"],
$contact["addr"],
$contact["url"],
$contact["photo"],
$contact["network"],
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$contact["cid"] ?? 0,
$contact["zid"] ?? 0,
$contact["keywords"]
);
$resultList->addResult($result);
}
// Add found profiles from the global directory to the local directory
Worker::add(PRIORITY_LOW, 'SearchDirectory', $search);
return $resultList;
}
/**
* Searching for contacts for autocompletion
*
* @param string $search Name or part of a name or nick
* @param string $mode Search mode (e.g. "community")
* @param int $page Page number (starts at 1)
* @return array with the search results
* @throws HTTPException\InternalServerErrorException
*/
public static function searchContact($search, $mode, int $page = 1)
{
Logger::info('Searching', ['search' => $search, 'mode' => $mode, 'page' => $page]);
if (DI::config()->get('system', 'block_public') && !Session::isAuthenticated()) {
return [];
}
// don't search if search term has less than 2 characters
if (!$search || mb_strlen($search) < 2) {
return [];
}
if (substr($search, 0, 1) === '@') {
$search = substr($search, 1);
}
// check if searching in the local global contact table is enabled
if (DI::config()->get('system', 'poco_local_search')) {
$return = Contact::searchByName($search, $mode);
} else {
$p = $page > 1 ? 'p=' . $page : '';
$curlResult = DI::httpRequest()->get(self::getGlobalDirectory() . '/search/people?' . $p . '&q=' . urlencode($search), ['accept_content' => 'application/json']);
if ($curlResult->isSuccess()) {
$searchResult = json_decode($curlResult->getBody(), true);
if (!empty($searchResult['profiles'])) {
$return = $searchResult['profiles'];
}
}
}
return $return ?? [];
}
/**
* Returns the global directory name, used in this node
*
* @return string
*/
public static function getGlobalDirectory()
{
return DI::config()->get('system', 'directory', self::DEFAULT_DIRECTORY);
}
/**
* Return the search path (either fulltext search or tag search)
*
* @param string $search
* @return string search path
*/
public static function getSearchPath(string $search)
{
if (substr($search, 0, 1) == '#') {
return 'search?tag=' . urlencode(substr($search, 1));
} else {
return 'search?q=' . urlencode($search);
}
}
}