friendica/mod/delegate.php

<?php
require_once('mod/settings.php');

function delegate_init(App $a) {
	return settings_init($a);
}


function delegate_content(App $a) {

	if (! local_user()) {
		notice( t('Permission denied.') . EOL);
		return;
	}

	if ($a->argc > 2 && $a->argv[1] === 'add' && intval($a->argv[2])) {

		// delegated admins can view but not change delegation permissions

		if (x($_SESSION,'submanage') && intval($_SESSION['submanage'])) {
			goaway(App::get_baseurl() . '/delegate');
		}

		$id = $a->argv[2];

		$r = q("SELECT `nickname` FROM `user` WHERE `uid` = %d LIMIT 1",
			intval($id)
		);
		if (dbm::is_result($r)) {
			$r = q("SELECT `id` FROM `contact` WHERE `uid` = %d AND `nurl` = '%s' LIMIT 1",
				intval(local_user()),
				dbesc(normalise_link(App::get_baseurl() . '/profile/' . $r[0]['nickname']))
			);
			if (dbm::is_result($r)) {
				q("INSERT INTO `manage` ( `uid`, `mid` ) VALUES ( %d , %d ) ",
					intval($a->argv[2]),
					intval(local_user())
				);
			}
		}
		goaway(App::get_baseurl() . '/delegate');
	}

	if ($a->argc > 2 && $a->argv[1] === 'remove' && intval($a->argv[2])) {

		// delegated admins can view but not change delegation permissions
		if (x($_SESSION,'submanage') && intval($_SESSION['submanage'])) {
			goaway(App::get_baseurl() . '/delegate');
		}

		q("DELETE FROM `manage` WHERE `uid` = %d AND `mid` = %d LIMIT 1",
			intval($a->argv[2]),
			intval(local_user())
		);
		goaway(App::get_baseurl() . '/delegate');

	}

	$full_managers = array();

	// These people can manage this account/page with full privilege

	$r = q("SELECT * FROM `user` WHERE `email` = '%s' AND `password` = '%s' ",
		dbesc($a->user['email']),
		dbesc($a->user['password'])
	);
	if (dbm::is_result($r)) {
		$full_managers = $r;
	}

	$delegates = array();

	// find everybody that currently has delegated management to this account/page

	$r = q("SELECT * FROM `user` WHERE `uid` IN ( SELECT `uid` FROM `manage` WHERE `mid` = %d ) ",
		intval(local_user())
	);

	if (dbm::is_result($r)) {
		$delegates = $r;
	}

	$uids = array();

	if (count($full_managers)) {
		foreach ($full_managers as $rr) {
			$uids[] = $rr['uid'];
		}
	}

	if (count($delegates)) {
		foreach ($delegates as $rr) {
			$uids[] = $rr['uid'];
		}
	}

	// find every contact who might be a candidate for delegation

	$r = q("SELECT `nurl` FROM `contact` WHERE SUBSTRING_INDEX(`contact`.`nurl`,'/',3) = '%s'
		AND `contact`.`uid` = %d AND `contact`.`self` = 0 AND `network` = '%s' ",
		dbesc(normalise_link(App::get_baseurl())),
		intval(local_user()),
		dbesc(NETWORK_DFRN)
	);

	if (! dbm::is_result($r)) {
		notice( t('No potential page delegates located.') . EOL);
		return;
	}

	$nicknames = array();

	if (dbm::is_result($r)) {
		foreach ($r as $rr) {
			$nicknames[] = "'" . dbesc(basename($rr['nurl'])) . "'";
		}
	}

	$potentials = array();

	$nicks = implode(',',$nicknames);

	// get user records for all potential page delegates who are not already delegates or managers

	$r = q("SELECT `uid`, `username`, `nickname` FROM `user` WHERE `nickname` IN ( $nicks )");

	if (dbm::is_result($r)) {
		foreach ($r as $rr) {
			if (! in_array($rr['uid'],$uids)) {
				$potentials[] = $rr;
			}
		}
	}

	require_once("mod/settings.php");
	settings_init($a);

	$o = replace_macros(get_markup_template('delegate.tpl'),array(
		'$header' => t('Delegate Page Management'),
		'$base' => App::get_baseurl(),
		'$desc' => t('Delegates are able to manage all aspects of this account/page except for basic account settings. Please do not delegate your personal account to anybody that you do not trust completely.'),
		'$head_managers' => t('Existing Page Managers'),
		'$managers' => $full_managers,
		'$head_delegates' => t('Existing Page Delegates'),
		'$delegates' => $delegates,
		'$head_potentials' => t('Potential Delegates'),
		'$potentials' => $potentials,
		'$remove' => t('Remove'),
		'$add' => t('Add'),
		'$none' => t('No entries.')
	));


	return $o;


}