Implemented plugin architecture.

libs/plugins/function.fetch.php

@@ -0,0 +1,51 @@
+<?php
+
+/*
+ * Smarty plugin
+ * -------------------------------------------------------------
+ * Type:     function
+ * Name:     fetch
+ * Purpose:  fetch file, web or ftp data and display results
+ * -------------------------------------------------------------
+ */
+function smarty_function_fetch($args, &$smarty_obj)
+{
+    extract($args);
+
+    if (empty($file)) {
+        $smarty_obj->_trigger_error_msg("parameter 'file' cannot be empty");
+        return;
+    }
+
+    if ($smarty_obj->security && !preg_match('!^(http|ftp)://!', $file)) {
+        // make sure fetched file comes from secure directory
+        foreach ($smarty_obj->secure_dir as $curr_dir) {
+            if (substr(realpath($file), 0, strlen(realpath($curr_dir))) == realpath($curr_dir)) {
+                $resource_is_secure = true;
+                break;
+            }
+        }
+        if (!$resource_is_secure) {
+            $smarty_obj->_trigger_error_msg("(secure mode) fetch '$file' is not allowed");
+            return;
+        }
+        if (!@is_readable($file)) {
+            $smarty_obj->_trigger_error_msg("fetch cannot read file '$file'");
+            return;
+        }
+    }
+
+
+    if (!empty($assign)) {
+        ob_start();
+        readfile($file);
+        $smarty_obj->assign($assign,ob_get_contents());
+        ob_end_clean();
+    } else {
+        readfile($file);
+    }
+}
+
+/* vim: set expandtab: */
+
+?>