From ea7224fb6a2909048bf5cb459fe0d292060a93ae Mon Sep 17 00:00:00 2001
From: Dries Buytaert <dries@buytaert.net>
Date: Fri, 8 Dec 2006 11:55:56 +0000
Subject: - Patch #87310 by dfaulkner and Grugnog2: fix borken request_uri() on
 some systems.

---
 includes/bootstrap.inc | 30 ++++++++++++++++++++----------
 1 file changed, 20 insertions(+), 10 deletions(-)

(limited to 'includes')

diff --git a/includes/bootstrap.inc b/includes/bootstrap.inc
index cb4ec13b5..04befd32a 100644
--- a/includes/bootstrap.inc
+++ b/includes/bootstrap.inc
@@ -515,20 +515,30 @@ function check_plain($text) {
 }
 
 /**
- * Since $_SERVER['REQUEST_URI'] is only available on Apache, we
- * generate an equivalent using other environment variables.
+ * The value of $_SERVER['REQUEST_URI'] is inconsistent between various
+ * web servers (Apache, IIS, iPlanet, etc.).
+ *
+ * For those cases where REQUEST_URI is provided, we inspect it to be sure
+ * that it contains the QUERY_STRING as well as the actual REQUEST_URI.
+ *
+ * Where this value is not available we generate an equivalent using other
+ * environment variables.
  */
 function request_uri() {
-
-  if (isset($_SERVER['REQUEST_URI'])) {
-    $uri = $_SERVER['REQUEST_URI'];
-  }
-  else {
-    if (isset($_SERVER['argv'])) {
-      $uri = $_SERVER['PHP_SELF'] .'?'. $_SERVER['argv'][0];
+  static $uri;
+  if (!isset($uri)) {
+    // If we have a REQUEST_URI and the query string is present in it, we use the value directly.
+    if (isset($_SERVER['REQUEST_URI']) && !empty($_SERVER['QUERY_STRING']) && strpos($_SERVER['REQUEST_URI'], $_SERVER['QUERY_STRING'])) {
+      $uri = $_SERVER['REQUEST_URI'];
     }
     else {
-      $uri = $_SERVER['PHP_SELF'] .'?'. $_SERVER['QUERY_STRING'];
+      // Generate an equivalent.
+      if (isset($_SERVER['argv'])) {
+        $uri = $_SERVER['PHP_SELF'] .'?'. $_SERVER['argv'][0];
+      }
+      else {
+        $uri = $_SERVER['PHP_SELF'] .'?'. $_SERVER['QUERY_STRING'];
+      }
     }
   }
 
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