friendica/include/group.php

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<?php
function group_add($uid,$name) {
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$ret = false;
if(x($uid) && x($name)) {
$r = group_byname($uid,$name); // check for dups
if($r !== false) {
// This could be a problem.
// Let's assume we've just created a group which we once deleted
// all the old members are gone, but the group remains so we don't break any security
// access lists. What we're doing here is reviving the dead group, but old content which
// was restricted to this group may now be seen by the new group members.
$z = q("SELECT * FROM `group` WHERE `id` = %d LIMIT 1",
intval($r)
);
if(count($z) && $z[0]['deleted']) {
$r = q("UPDATE `group` SET `deleted` = 0 WHERE `uid` = %d AND `name` = '%s' LIMIT 1",
intval($uid),
dbesc($name)
);
notice( t('A deleted group with this name was revived. Existing item permissions <strong>may</strong> apply to this group and any future members. If this is not what you intended, please create another group with a different name.') . EOL);
}
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return true;
}
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$r = q("INSERT INTO `group` ( `uid`, `name` )
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VALUES( %d, '%s' ) ",
intval($uid),
dbesc($name)
);
$ret = $r;
}
return $ret;
}
function group_rmv($uid,$name) {
$ret = false;
if(x($uid) && x($name)) {
$r = q("SELECT * FROM `group` WHERE `uid` = %d AND `name` = '%s' LIMIT 1",
intval($uid),
dbesc($name)
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);
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if(count($r))
$group_id = $r[0]['id'];
if(! $group_id)
return false;
// remove all members
$r = q("DELETE FROM `group_member` WHERE `uid` = %d AND `gid` = %d ",
intval($uid),
intval($group_id)
);
// remove group
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$r = q("UPDATE `group` SET `deleted` = 1 WHERE `uid` = %d AND `name` = '%s' LIMIT 1",
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intval($uid),
dbesc($name)
);
$ret = $r;
}
return $ret;
}
function group_byname($uid,$name) {
if((! $uid) || (! strlen($name)))
return false;
$r = q("SELECT * FROM `group` WHERE `uid` = %d AND `name` = '%s' LIMIT 1",
intval($uid),
dbesc($name)
);
if(count($r))
return $r[0]['id'];
return false;
}
function group_rmv_member($uid,$name,$member) {
$gid = group_byname($uid,$name);
if(! $gid)
return false;
if(! ( $uid && $gid && $member))
return false;
$r = q("DELETE FROM `group_member` WHERE `uid` = %d AND `gid` = %d AND `contact-id` = %d LIMIT 1 ",
intval($uid),
intval($gid),
intval($member)
);
return $r;
}
function group_add_member($uid,$name,$member) {
$gid = group_byname($uid,$name);
if((! $gid) || (! $uid) || (! $member))
return false;
$r = q("SELECT * FROM `group_member` WHERE `uid` = %d AND `id` = %d AND `contact-id` = %d LIMIT 1",
intval($uid),
intval($gid),
intval($member)
);
if(count($r))
return true; // You might question this, but
// we indicate success because the group member was in fact created
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// -- It was just created at another time
if(! count($r))
$r = q("INSERT INTO `group_member` (`uid`, `gid`, `contact-id`)
VALUES( %d, %d, %d ) ",
intval($uid),
intval($gid),
intval($member)
);
return $r;
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}
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function group_get_members($gid) {
$ret = array();
if(intval($gid)) {
$r = q("SELECT `group_member`.`contact-id`, `contact`.* FROM `group_member`
LEFT JOIN `contact` ON `contact`.`id` = `group_member`.`contact-id`
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WHERE `gid` = %d AND `group_member`.`uid` = %d ORDER BY `contact`.`name` ASC ",
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intval($gid),
intval(local_user())
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);
if(count($r))
$ret = $r;
}
return $ret;
}
function group_public_members($gid) {
$ret = 0;
if(intval($gid)) {
$r = q("SELECT `contact`.`id` AS `contact-id` FROM `group_member`
LEFT JOIN `contact` ON `contact`.`id` = `group_member`.`contact-id`
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WHERE `gid` = %d AND `group_member`.`uid` = %d
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AND `contact`.`network` = '%s' AND `contact`.`notify` != '' ",
intval($gid),
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intval(local_user()),
dbesc(NETWORK_OSTATUS)
);
if(count($r))
$ret = count($r);
}
return $ret;
}
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function group_side($every="contacts",$each="group",$edit = false, $group_id = 0, $cid = 0) {
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$o = '';
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if(! local_user())
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return '';
$groups = array();
$groups[] = array(
'text' => t('Everybody'),
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'id' => 0,
'selected' => (($group_id == 0) ? 'group-selected' : ''),
'href' => $every,
);
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$r = q("SELECT * FROM `group` WHERE `deleted` = 0 AND `uid` = %d ORDER BY `name` ASC",
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intval($_SESSION['uid'])
);
$member_of = array();
if($cid) {
$member_of = groups_containing(local_user(),$cid);
}
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if(count($r)) {
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foreach($r as $rr) {
$selected = (($group_id == $rr['id']) ? ' group-selected' : '');
if ($edit) {
$groupedit = array(
'href' => "group/".$rr['id'],
'title' => t('edit'),
);
} else {
$groupedit = null;
}
$groups[] = array(
'id' => $rr['id'],
'cid' => $cid,
'text' => $rr['name'],
'selected' => $selected,
'href' => $each."/".$rr['id'],
'edit' => $groupedit,
'ismember' => in_array($rr['id'],$member_of),
);
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}
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}
$tpl = get_markup_template("group_side.tpl");
$o = replace_macros($tpl, array(
'$title' => t('Groups'),
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'$edittext' => t('Edit group'),
'$createtext' => t('Create a new group'),
'$ungrouped' => (($every === 'contacts') ? t('Contacts not in any group') : ''),
'$groups' => $groups,
'$add' => t('add'),
));
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return $o;
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}
function expand_groups($a) {
if(! (is_array($a) && count($a)))
return array();
$groups = implode(',', $a);
$groups = dbesc($groups);
$r = q("SELECT `contact-id` FROM `group_member` WHERE `gid` IN ( $groups )");
$ret = array();
if(count($r))
foreach($r as $rr)
$ret[] = $rr['contact-id'];
return $ret;
}
function member_of($c) {
$r = q("SELECT `group`.`name`, `group`.`id` FROM `group` LEFT JOIN `group_member` ON `group_member`.`gid` = `group`.`id` WHERE `group_member`.`contact-id` = %d AND `group`.`deleted` = 0 ORDER BY `group`.`name` ASC ",
intval($c)
);
return $r;
}
function groups_containing($uid,$c) {
$r = q("SELECT `gid` FROM `group_member` WHERE `uid` = %d AND `group_member`.`contact-id` = %d ",
intval($uid),
intval($c)
);
$ret = array();
if(count($r)) {
foreach($r as $rr)
$ret[] = $rr['gid'];
}
return $ret;
}