<?php
namespace Zotlabs\Lib;
use Zotlabs\Lib\Libsync;
class AccessList {
static function add($uid,$name,$public = 0) {
$ret = false;
if ($uid && $name) {
$r = self::byname($uid,$name); // check for dups
if ($r !== false) {
// This could be a problem.
// Let's assume we've just created a list which we once deleted
// all the old members are gone, but the list remains so we don't break any security
// access lists. What we're doing here is reviving the dead list, but old content which
// was restricted to this list may now be seen by the new list members.
$z = q("SELECT * FROM pgrp WHERE id = %d LIMIT 1",
intval($r)
);
if(($z) && $z[0]['deleted']) {
q('UPDATE pgrp SET deleted = 0 WHERE id = %d', intval($z[0]['id']));
notice( t('A deleted list with this name was revived. Existing item permissions <strong>may</strong> apply to this list and any future members. If this is not what you intended, please create another list with a different name.') . EOL);
}
return true;
}
$hash = new_uuid();
$r = q("INSERT INTO pgrp ( hash, uid, visible, gname )
VALUES( '%s', %d, %d, '%s' ) ",
dbesc($hash),
intval($uid),
intval($public),
dbesc($name)
);
$ret = $r;
}
Libsync::build_sync_packet($uid,null,true);
return $ret;
}
static function remove($uid,$name) {
$ret = false;
if ($uid && $name) {
$r = q("SELECT id, hash FROM pgrp WHERE uid = %d AND gname = '%s' LIMIT 1",
intval($uid),
dbesc($name)
);
if ($r) {
$group_id = $r[0]['id'];
$group_hash = $r[0]['hash'];
}
else {
return false;
}
// remove group from default posting lists
$r = q("SELECT channel_default_group, channel_allow_gid, channel_deny_gid FROM channel WHERE channel_id = %d LIMIT 1",
intval($uid)
);
if ($r) {
$user_info = array_shift($r);
$change = false;
if ($user_info['channel_default_group'] == $group_hash) {
$user_info['channel_default_group'] = '';
$change = true;
}
if (strpos($user_info['channel_allow_gid'], '<' . $group_hash . '>') !== false) {
$user_info['channel_allow_gid'] = str_replace('<' . $group_hash . '>', '', $user_info['channel_allow_gid']);
$change = true;
}
if (strpos($user_info['channel_deny_gid'], '<' . $group_hash . '>') !== false) {
$user_info['channel_deny_gid'] = str_replace('<' . $group_hash . '>', '', $user_info['channel_deny_gid']);
$change = true;
}
if ($change) {
q("UPDATE channel SET channel_default_group = '%s', channel_allow_gid = '%s', channel_deny_gid = '%s'
WHERE channel_id = %d",
intval($user_info['channel_default_group']),
dbesc($user_info['channel_allow_gid']),
dbesc($user_info['channel_deny_gid']),
intval($uid)
);
}
}
// remove all members
$r = q("DELETE FROM pgrp_member WHERE uid = %d AND gid = %d ",
intval($uid),
intval($group_id)
);
// remove group
$r = q("UPDATE pgrp SET deleted = 1 WHERE uid = %d AND gname = '%s'",
intval($uid),
dbesc($name)
);
$ret = $r;
}
Libsync::build_sync_packet($uid,null,true);
return $ret;
}
// returns the integer id of an access group owned by $uid and named $name
// or false.
static function byname($uid,$name) {
if (! ($uid && $name)) {
return false;
}
$r = q("SELECT id FROM pgrp WHERE uid = %d AND gname = '%s' LIMIT 1",
intval($uid),
dbesc($name)
);
if ($r) {
return $r[0]['id'];
}
return false;
}
static function by_id($uid,$id) {
if (! ($uid && $id)) {
return false;
}
$r = q("SELECT * FROM pgrp WHERE uid = %d AND id = %d and deleted = 0",
intval($uid),
intval($id)
);
if ($r) {
return array_shift($r);
}
return false;
}
static function rec_byhash($uid,$hash) {
if (! ( $uid && $hash)) {
return false;
}
$r = q("SELECT * FROM pgrp WHERE uid = %d AND hash = '%s' LIMIT 1",
intval($uid),
dbesc($hash)
);
if ($r) {
return array_shift($r);
}
return false;
}
static function member_remove($uid,$name,$member) {
$gid = self::byname($uid,$name);
if (! $gid) {
return false;
}
if (! ($uid && $gid && $member)) {
return false;
}
$r = q("DELETE FROM pgrp_member WHERE uid = %d AND gid = %d AND xchan = '%s' ",
intval($uid),
intval($gid),
dbesc($member)
);
Libsync::build_sync_packet($uid,null,true);
return $r;
}
static function member_add($uid,$name,$member,$gid = 0) {
if (! $gid) {
$gid = self::byname($uid,$name);
}
if (! ($gid && $uid && $member)) {
return false;
}
$r = q("SELECT * FROM pgrp_member WHERE uid = %d AND gid = %d AND xchan = '%s' LIMIT 1",
intval($uid),
intval($gid),
dbesc($member)
);
if ($r) {
return true; // You might question this, but
// we indicate success because the group member was in fact created
// -- It was just created at another time
}
else {
$r = q("INSERT INTO pgrp_member (uid, gid, xchan)
VALUES( %d, %d, '%s' ) ",
intval($uid),
intval($gid),
dbesc($member)
);
}
Libsync::build_sync_packet($uid,null,true);
return $r;
}
static function members($uid, $gid) {
$ret = [];
if (intval($gid)) {
$r = q("SELECT * FROM pgrp_member
LEFT JOIN abook ON abook_xchan = pgrp_member.xchan left join xchan on xchan_hash = abook_xchan
WHERE gid = %d AND abook_channel = %d and pgrp_member.uid = %d and xchan_deleted = 0 and abook_self = 0 and abook_blocked = 0 and abook_pending = 0 ORDER BY xchan_name ASC ",
intval($gid),
intval($uid),
intval($uid)
);
if ($r) {
$ret = $r;
}
}
return $ret;
}
static function members_xchan($uid,$gid) {
$ret = [];
if (intval($gid)) {
$r = q("SELECT xchan FROM pgrp_member WHERE gid = %d AND uid = %d",
intval($gid),
intval($uid)
);
if ($r) {
foreach ($r as $rv) {
$ret[] = $rv['xchan'];
}
}
}
return $ret;
}
static function members_profile_xchan($uid,$gid) {
$ret = [];
if (intval($gid)) {
$r = q("SELECT abook_xchan as xchan from abook left join profile on abook_profile = profile_guid where profile.id = %d and profile.uid = %d",
intval($gid),
intval($uid)
);
if ($r) {
foreach($r as $rv) {
$ret[] = $rv['xchan'];
}
}
}
return $ret;
}
static function select($uid,$group = '') {
$grps = [];
$r = q("SELECT * FROM pgrp WHERE deleted = 0 AND uid = %d ORDER BY gname ASC",
intval($uid)
);
$grps[] = [ 'name' => '', 'hash' => '0', 'selected' => '' ];
if ($r) {
foreach ($r as $rr) {
$grps[] = [ 'name' => $rr['gname'], 'id' => $rr['hash'], 'selected' => (($group == $rr['hash']) ? 'true' : '') ];
}
}
return replace_macros(get_markup_template('group_selection.tpl'), [
'$label' => t('Add new connections to this access list'),
'$groups' => $grps
]);
}
static function widget($every="connections",$each="lists",$edit = false, $group_id = 0, $cid = '',$mode = 1) {
$o = '';
$groups = [];
$r = q("SELECT * FROM pgrp WHERE deleted = 0 AND uid = %d ORDER BY gname ASC",
intval($_SESSION['uid'])
);
$member_of = [];
if ($cid) {
$member_of = self::containing(local_channel(),$cid);
}
if ($r) {
foreach ($r as $rr) {
$selected = (($group_id == $rr['id']) ? ' group-selected' : '');
if ($edit) {
$groupedit = [ 'href' => "lists/".$rr['id'], 'title' => t('edit') ];
}
else {
$groupedit = null;
}
$groups[] = [
'id' => $rr['id'],
'enc_cid' => base64url_encode($cid),
'cid' => $cid,
'text' => $rr['gname'],
'selected' => $selected,
'href' => (($mode == 0) ? $each.'?f=&gid='.$rr['id'] : $each."/".$rr['id']) . ((x($_GET,'new')) ? '&new=' . $_GET['new'] : '') . ((x($_GET,'order')) ? '&order=' . $_GET['order'] : ''),
'edit' => $groupedit,
'ismember' => in_array($rr['id'],$member_of),
];
}
}
return replace_macros(get_markup_template('group_side.tpl'), [
'$title' => t('Lists'),
'$edittext' => t('Edit list'),
'$createtext' => t('Create new list'),
'$ungrouped' => (($every === 'contacts') ? t('Channels not in any access list') : ''),
'$groups' => $groups,
'$add' => t('add'),
]);
}
static function expand($g) {
if (! (is_array($g) && count($g))) {
return [];
}
$ret = [];
$x = [];
// private profile linked virtual groups
foreach ($g as $gv) {
if (substr($gv,0,3) === 'vp.') {
$profile_hash = substr($gv,3);
if ($profile_hash) {
$r = q("select abook_xchan from abook where abook_profile = '%s'",
dbesc($profile_hash)
);
if ($r) {
foreach ($r as $rv) {
$ret[] = $rv['abook_xchan'];
}
}
}
}
else {
$x[] = $gv;
}
}
if ($x) {
stringify_array_elms($x,true);
$groups = implode(',', $x);
if ($groups) {
$r = q("SELECT xchan FROM pgrp_member WHERE gid IN ( select id from pgrp where hash in ( $groups ))");
if ($r) {
foreach ($r as $rv) {
$ret[] = $rv['xchan'];
}
}
}
}
return $ret;
}
static function member_of($c) {
$r = q("SELECT pgrp.gname, pgrp.id FROM pgrp LEFT JOIN pgrp_member ON pgrp_member.gid = pgrp.id
WHERE pgrp_member.xchan = '%s' AND pgrp.deleted = 0 ORDER BY pgrp.gname ASC ",
dbesc($c)
);
return $r;
}
static function containing($uid,$c) {
$r = q("SELECT gid FROM pgrp_member WHERE uid = %d AND pgrp_member.xchan = '%s' ",
intval($uid),
dbesc($c)
);
$ret = [];
if ($r) {
foreach ($r as $rv)
$ret[] = $rv['gid'];
}
return $ret;
}
}
