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-rw-r--r--engine/lib/elgglib.php34
1 files changed, 34 insertions, 0 deletions
diff --git a/engine/lib/elgglib.php b/engine/lib/elgglib.php
index d5d0828b6..c0d19743a 100644
--- a/engine/lib/elgglib.php
+++ b/engine/lib/elgglib.php
@@ -2413,6 +2413,40 @@ interface Friendable {
public function countObjects($subtype = "");
}
+/**
+ * Rebuilds the parsed URL
+ *
+ * @param array $parts Associative array of URL components like parse_url() returns
+ * @return str Full URL
+ * @since 1.7
+ */
+function elgg_http_build_url(array $parts) {
+ return "{$parts['scheme']}://{$parts['host']}{$parts['path']}?{$parts['query']}";
+}
+
+/**
+ * Ensures action tokens are present in the given link
+ *
+ * @param str $link Full action URL
+ * @return str Validated URL
+ * @since 1.7
+ */
+function elgg_validate_action_url($link) {
+ $url = parse_url($link);
+ parse_str($url['query'], $query);
+ if (array_key_exists('__elgg_token', $query)) {
+ return $link;
+ }
+
+ // apend action tokens to the existing query
+ $query['__elgg_ts'] = time();
+ $query['__elgg_token'] = generate_action_token($query['__elgg_ts']);
+ $url['query'] = http_build_query($query);
+
+ // rebuild the full url
+ return elgg_http_build_url($url);
+}
+
/**
* Server javascript pages.