117 lines
2.6 KiB
PHP
117 lines
2.6 KiB
PHP
<?php
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function can_write_wall(&$a,$owner) {
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static $verified = 0;
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if((! (local_user())) && (! (remote_user())))
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return false;
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$uid = local_user();
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if(($uid) && ($uid == $owner)) {
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return true;
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}
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if(remote_user()) {
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// user remembered decision and avoid a DB lookup for each and every display item
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// DO NOT use this function if there are going to be multiple owners
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if($verified === 2)
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return true;
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elseif($verified === 1)
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return false;
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else {
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$r = q("SELECT `contact`.*, `user`.`page-flags` FROM `contact` LEFT JOIN `user` on `user`.`uid` = `contact`.`uid`
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WHERE `contact`.`uid` = %d AND `contact`.`id` = %d AND `contact`.`blocked` = 0 AND `contact`.`pending` = 0
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AND `user`.`blockwall` = 0 AND `readonly` = 0 AND ( `contact`.`rel` IN ( %d , %d ) OR `user`.`page-flags` = %d ) LIMIT 1",
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intval($owner),
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intval(remote_user()),
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intval(REL_VIP),
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intval(REL_BUD),
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intval(PAGE_COMMUNITY)
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);
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if(count($r)) {
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$verified = 2;
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return true;
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}
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else {
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$verified = 1;
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}
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}
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}
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return false;
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}
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function permissions_sql($owner_id,$remote_verified = false,$groups = null) {
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$local_user = local_user();
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$remote_user = remote_user();
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/**
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* Construct permissions
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*
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* default permissions - anonymous user
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*/
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$sql = " AND allow_cid = ''
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AND allow_gid = ''
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AND deny_cid = ''
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AND deny_gid = ''
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";
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/**
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* Profile owner - everything is visible
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*/
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if(($local_user) && ($local_user == $owner_id)) {
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$sql = '';
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}
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/**
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* Authenticated visitor. Unless pre-verified,
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* check that the contact belongs to this $owner_id
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* and load the groups the visitor belongs to.
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* If pre-verified, the caller is expected to have already
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* done this and passed the groups into this function.
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*/
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elseif($remote_user) {
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if(! $remote_verified) {
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$r = q("SELECT id FROM contact WHERE id = %d AND uid = %d AND blocked = 0 LIMIT 1",
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intval($remote_user),
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intval($owner_id)
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);
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if(count($r)) {
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$remote_verified = true;
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$groups = init_groups_visitor($remote_user);
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}
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}
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if($remote_verified) {
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$gs = '<<>>'; // should be impossible to match
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if(is_array($groups) && count($groups)) {
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foreach($groups as $g)
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$gs .= '|<' . intval($g) . '>';
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}
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$sql = sprintf(
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" AND ( allow_cid = '' OR allow_cid REGEXP '<%d>' )
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AND ( deny_cid = '' OR NOT deny_cid REGEXP '<%d>' )
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AND ( allow_gid = '' OR allow_gid REGEXP '%s' )
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AND ( deny_gid = '' OR NOT deny_gid REGEXP '%s')
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",
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intval($remote_user),
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intval($remote_user),
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dbesc($gs),
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dbesc($gs)
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);
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}
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}
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return $sql;
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} |