Add trailing slash autocorrection for wwwroot (bug #745426)

Change-Id: I9c04ac01f65c983a54015e370fd592b8a4bfc147
Signed-off-by: Darryl Hamilton <darrylh@catalyst.net.nz>

htdocs/config-dist.php

@@ -55,12 +55,14 @@ $cfg->dbprefix = '';
 // wwwroot - the web-visible path to your Mahara installation
 // Normally, this is automatically detected - if it doesn't work for you
 // then try specifying it here
+// This value must end with a /
 //$cfg->wwwroot = 'http://myhost.com/mahara/';
 
 // You will only need to specify this if you want to use HTTPS for
 // logins, but not for regular pages. If you want to serve all of your
 // Mahara content via HTTPS, just set $cfg->wwwroot to use HTTPS instead.
-//$cfg->httpswwwroot = 'https://myhost.com/mahara';
+// This value must end with a /
+//$cfg->httpswwwroot = 'https://myhost.com/mahara/';
 
 // dataroot - uploaded files are stored here
 // This is a ABSOLUTE FILESYSTEM PATH. This is NOT a URL.

htdocs/init.php

@@ -185,6 +185,11 @@ if (!isset($CFG->wwwroot) && isset($_SERVER['HTTP_HOST'])) {
         $CFG->wwwroot = $wwwroot;
     }
 }
+if (isset($CFG->wwwroot)) {
+    if (substr($CFG->wwwroot, -1, 1) != '/') {
+        $CFG->wwwroot .= '/';
+    }
+}
 if (isset($CFG->httpswwwroot)) {
     if (substr($CFG->httpswwwroot, -1, 1) != '/') {
         $CFG->httpswwwroot .= '/';