73 lines
1.6 KiB
PHP
73 lines
1.6 KiB
PHP
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<?php
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function attach_init(&$a) {
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if($a->argc != 2) {
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notice( t('Item not available.') . EOL);
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return;
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}
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$item_id = intval($a->argv[1]);
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$r = q("SELECT * FROM `attach` WHERE `id` = %d LIMIT 1",
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intval($item_id)
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);
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if(! count($r)) {
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notice( t('Item was not found.'). EOL);
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return;
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}
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$owner = $r[0]['uid'];
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$sql_extra = " AND `allow_cid` = '' AND `allow_gid` = '' AND `deny_cid` = '' AND `deny_gid` = '' ";
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if(local_user() && ($owner == $_SESSION['uid'])) {
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// Owner can always see his/her photos
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$sql_extra = '';
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}
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elseif(remote_user()) {
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// authenticated visitor - here lie dragons
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$groups = init_groups_visitor($_SESSION['visitor_id']);
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$gs = '<<>>'; // should be impossible to match
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if(count($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_extra = 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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intval($_SESSION['visitor_id']),
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intval($_SESSION['visitor_id']),
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dbesc($gs),
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dbesc($gs)
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);
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}
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// Now we'll see if we can access the attachment
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$r = q("SELECT * FROM `attach` WHERE `id` = '%d' $sql_extra LIMIT 1",
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dbesc($item_id)
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);
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if(count($r)) {
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$data = $r[0]['data'];
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}
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else {
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notice( t('Permission denied.') . EOL);
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return;
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}
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header('Content-type: ' . $r[0]['filetype']);
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header('Content-disposition: attachment; filename=' . $r[0]['filename']);
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echo $data;
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killme();
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// NOTREACHED
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}
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