From 44c20a11cd049b8f08938b855e94d2ca4f8bf2e1 Mon Sep 17 00:00:00 2001
From: Jaime Perez Crespo <jaime.perez@uninett.no>
Date: Mon, 18 Apr 2016 16:05:58 +0200
Subject: [PATCH] Add a method that tries to guess the base URI path.
---
lib/SimpleSAML/Utils/HTTP.php | 30 ++++++++++++++++++++++++++++++
1 file changed, 30 insertions(+)
diff --git a/lib/SimpleSAML/Utils/HTTP.php b/lib/SimpleSAML/Utils/HTTP.php
index 39ecec069..6292de74f 100644
--- a/lib/SimpleSAML/Utils/HTTP.php
+++ b/lib/SimpleSAML/Utils/HTTP.php
@@ -501,6 +501,36 @@ class HTTP
}
+ /**
+ * Try to guess the base SimpleSAMLphp path from the current request.
+ *
+ * This method offers just a guess, so don't rely on it.
+ *
+ * @return string The guessed base path that should correspond to the root installation of SimpleSAMLphp.
+ */
+ public static function guessBasePath()
+ {
+ // get the name of the current script
+ $path = explode('/', $_SERVER['SCRIPT_FILENAME']);
+ $script = array_pop($path);
+
+ // get the portion of the URI up to the script, i.e.: /simplesaml/some/directory/script.php
+ preg_match('#^/(?:[^/]+/)*'.$script.'#', $_SERVER['REQUEST_URI'], $matches);
+
+ $uri_s = explode('/', $matches[0]);
+ $file_s = explode('/', $_SERVER['SCRIPT_FILENAME']);
+
+ // compare both arrays from the end, popping elements matching out of them
+ while ($uri_s[count($uri_s) - 1] === $file_s[count($file_s) - 1]) {
+ array_pop($uri_s);
+ array_pop($file_s);
+ }
+
+ // we are now left with the minimum part of the URI that does not match anything in the file system, use it
+ return join('/', $uri_s).'/';
+ }
+
+
/**
* Retrieve the base URL of the SimpleSAMLphp installation. The URL will always end with a '/'. For example:
* https://idp.example.org/simplesaml/
--
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