From 078c1134bfb47a4b99c275b00ee781658fb36450 Mon Sep 17 00:00:00 2001
From: jonathanharker <jonathanharker>
Date: Sun, 14 Dec 2008 22:50:22 +0000
Subject: [PATCH] MDL-17548 MNET: Fix email links for sites with path component
 in wwwroot

Where Moodle sites had a path in their wwwroot, the MNET function that
forced remote users to go via their identity provider (to make sure they
were logged in) previously directed the user back to a URL like
contentprovider.com/moodle/moodle/mod/forum/view.php?f=7 where there
should only be one /moodle in the middle of the URL.
---
 mnet/lib.php | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/mnet/lib.php b/mnet/lib.php
index 39be23ed743af..7539d0fda64c8 100644
--- a/mnet/lib.php
+++ b/mnet/lib.php
@@ -626,12 +626,20 @@ function mnet_get_peer_host ($mnethostid) {
  */
 function mnet_sso_apply_indirection ($url) {
     global $MNETIDPJUMPURL;
+    global $CFG;
 
     $localpart='';
     $urlparts = parse_url($url[1]);
     if($urlparts) {
         if (isset($urlparts['path'])) {
-            $localpart .= $urlparts['path'];
+            $path = $urlparts['path'];
+            // if our wwwroot has a path component, need to strip that path from beginning of the
+            // 'localpart' to make it relative to moodle's wwwroot
+            $wwwrootpath = parse_url($CFG->wwwroot, PHP_URL_PATH);
+            if (!empty($wwwrootpath) and strpos($path, $wwwrootpath) === 0) {
+                $path = substr($path, strlen($wwwrootpath));
+            }
+            $localpart .= $path;
         }
         if (isset($urlparts['query'])) {
             $localpart .= '?'.$urlparts['query'];