aboutsummaryrefslogtreecommitdiffstats
path: root/include/security.php
diff options
context:
space:
mode:
Diffstat (limited to 'include/security.php')
-rw-r--r--include/security.php71
1 files changed, 71 insertions, 0 deletions
diff --git a/include/security.php b/include/security.php
index c74a9b4a3..789e47db2 100644
--- a/include/security.php
+++ b/include/security.php
@@ -44,3 +44,74 @@ function can_write_wall(&$a,$owner) {
return false;
}
+
+
+function permissions_sql($owner_id,$remote_verified = false,$groups = null) {
+
+ $local_user = local_user();
+ $remote_user = remote_user();
+
+ /**
+ * Construct permissions
+ *
+ * default permissions - anonymous user
+ */
+
+ $sql = " AND allow_cid = ''
+ AND allow_gid = ''
+ AND deny_cid = ''
+ AND deny_gid = ''
+ ";
+
+ /**
+ * Profile owner - everything is visible
+ */
+
+ if(($local_user) && ($local_user == $owner_id)) {
+ $sql = '';
+ }
+
+ /**
+ * Authenticated visitor. Unless pre-verified,
+ * check that the contact belongs to this $owner_id
+ * and load the groups the visitor belongs to.
+ * If pre-verified, the caller is expected to have already
+ * done this and passed the groups into this function.
+ */
+
+ elseif($remote_user) {
+
+ if(! $remote_verified) {
+ $r = q("SELECT id FROM contact WHERE id = %d AND uid = %d AND blocked = 0 LIMIT 1",
+ intval($remote_user),
+ intval($owner_id)
+ );
+ if(count($r)) {
+ $remote_verified = true;
+ $groups = init_groups_visitor($remote_user);
+ }
+ }
+ if($remote_verified) {
+
+ $gs = '<<>>'; // should be impossible to match
+
+ if(is_array($groups) && count($groups)) {
+ foreach($groups as $g)
+ $gs .= '|<' . intval($g) . '>';
+ }
+
+ $sql = sprintf(
+ " AND ( allow_cid = '' OR allow_cid REGEXP '<%d>' )
+ AND ( deny_cid = '' OR NOT deny_cid REGEXP '<%d>' )
+ AND ( allow_gid = '' OR allow_gid REGEXP '%s' )
+ AND ( deny_gid = '' OR NOT deny_gid REGEXP '%s')
+ ",
+ intval($remote_user),
+ intval($remote_user),
+ dbesc($gs),
+ dbesc($gs)
+ );
+ }
+ }
+ return $sql;
+} \ No newline at end of file