1 files changed, 77 insertions, 0 deletions
diff --git a/mod/profile/icondirect.php b/mod/profile/icondirect.php
new file mode 100644
index 000000000..5f1599e0d
--- /dev/null
+++ b/mod/profile/icondirect.php
@@ -0,0 +1,77 @@
+<?php
+/**
+ * Elgg profile icon cache/bypass
+ * 
+ * 
+ * @package ElggProfile
+ */
+
+// Get DB settings
+require_once(dirname(dirname(dirname(__FILE__))). '/engine/settings.php');
+
+global $CONFIG;
+
+// won't be able to serve anything if no joindate or guid
+if (!isset($_GET['joindate']) || !isset($_GET['guid'])) {
+	header("HTTP/1.1 404 Not Found");
+	exit;
+}
+
+$join_date = (int)$_GET['joindate'];
+$last_cache = (int)$_GET['lastcache']; // icontime
+$guid = (int)$_GET['guid'];
+
+// If is the same ETag, content didn't changed.
+$etag = $last_cache . $guid;
+if (isset($_SERVER['HTTP_IF_NONE_MATCH']) && trim($_SERVER['HTTP_IF_NONE_MATCH']) == "\"$etag\"") {
+	header("HTTP/1.1 304 Not Modified");
+	exit;
+}
+
+$size = strtolower($_GET['size']);
+if (!in_array($size, array('large', 'medium', 'small', 'tiny', 'master', 'topbar'))) {
+	$size = "medium";
+}
+
+$mysql_dblink = @mysql_connect($CONFIG->dbhost, $CONFIG->dbuser, $CONFIG->dbpass, true);
+if ($mysql_dblink) {
+	if (@mysql_select_db($CONFIG->dbname, $mysql_dblink)) {
+		$result = mysql_query("select name, value from {$CONFIG->dbprefix}datalists where name='dataroot'", $mysql_dblink);
+		if ($result) {
+			$row = mysql_fetch_object($result);
+			while ($row) {
+				if ($row->name == 'dataroot') {
+					$data_root = $row->value;
+				}
+				$row = mysql_fetch_object($result);
+			}
+		}
+
+		@mysql_close($mysql_dblink);
+
+		if (isset($data_root)) {
+
+			// this depends on ElggDiskFilestore::makeFileMatrix()
+			$user_path = date('Y/m/d/', $join_date) . $guid;
+
+			$filename = "$data_root$user_path/profile/{$guid}{$size}.jpg";
+			$filesize = @filesize($filename);
+			if ($filesize) {
+				header("Content-type: image/jpeg");
+				header('Expires: ' . gmdate('D, d M Y H:i:s \G\M\T', strtotime("+6 months")), true);
+				header("Pragma: public");
+				header("Cache-Control: public");
+				header("Content-Length: $filesize");
+				header("ETag: \"$etag\"");
+				readfile($filename);
+				exit;
+			}
+		}
+	}
+
+}
+
+// something went wrong so load engine and try to forward to default icon
+require_once(dirname(dirname(dirname(__FILE__))) . "/engine/start.php");
+elgg_log("Profile icon direct failed.", "WARNING");
+forward("_graphics/icons/user/default{$size}.gif");