aboutsummaryrefslogtreecommitdiffstats
path: root/mod/attach.php
diff options
context:
space:
mode:
Diffstat (limited to 'mod/attach.php')
-rw-r--r--mod/attach.php73
1 files changed, 73 insertions, 0 deletions
diff --git a/mod/attach.php b/mod/attach.php
new file mode 100644
index 000000000..3953d3aa1
--- /dev/null
+++ b/mod/attach.php
@@ -0,0 +1,73 @@
+<?php
+
+function attach_init(&$a) {
+
+ if($a->argc != 2) {
+ notice( t('Item not available.') . EOL);
+ return;
+ }
+
+ $item_id = intval($a->argv[1]);
+
+ $r = q("SELECT * FROM `attach` WHERE `id` = %d LIMIT 1",
+ intval($item_id)
+ );
+ if(! count($r)) {
+ notice( t('Item was not found.'). EOL);
+ return;
+ }
+
+ $owner = $r[0]['uid'];
+
+ $sql_extra = " AND `allow_cid` = '' AND `allow_gid` = '' AND `deny_cid` = '' AND `deny_gid` = '' ";
+
+ if(local_user() && ($owner == $_SESSION['uid'])) {
+
+ // Owner can always see his/her photos
+ $sql_extra = '';
+
+ }
+ elseif(remote_user()) {
+
+ // authenticated visitor - here lie dragons
+
+ $groups = init_groups_visitor($_SESSION['visitor_id']);
+ $gs = '<<>>'; // should be impossible to match
+ if(count($groups)) {
+ foreach($groups as $g)
+ $gs .= '|<' . intval($g) . '>';
+ }
+
+ $sql_extra = sprintf(
+ " AND ( `allow_cid` = '' OR `allow_cid` REGEXP '<%d>' )
+ AND ( `deny_cid` = '' OR NOT `deny_cid` REGEXP '<%d>' )
+ AND ( `allow_gid` = '' OR `allow_gid` REGEXP '%s' )
+ AND ( `deny_gid` = '' OR NOT `deny_gid` REGEXP '%s') ",
+
+ intval($_SESSION['visitor_id']),
+ intval($_SESSION['visitor_id']),
+ dbesc($gs),
+ dbesc($gs)
+ );
+ }
+
+ // Now we'll see if we can access the attachment
+
+ $r = q("SELECT * FROM `attach` WHERE `id` = '%d' $sql_extra LIMIT 1",
+ dbesc($item_id)
+ );
+
+ if(count($r)) {
+ $data = $r[0]['data'];
+ }
+ else {
+ notice( t('Permission denied.') . EOL);
+ return;
+ }
+
+ header('Content-type: ' . $r[0]['filetype']);
+ header('Content-disposition: attachment; filename=' . $r[0]['filename']);
+ echo $data;
+ killme();
+ // NOTREACHED
+} \ No newline at end of file