From caa3c95332fe159f15e16400a60090f0c43e3bc6 Mon Sep 17 00:00:00 2001
From: Dayson Pais <dayson@epicwhale.org>
Date: Mon, 22 Jul 2013 15:05:56 +0530
Subject: [PATCH] - Introduced get_uri function which retrieves the URL parts
 from the clean url. This works across all server configurations and also
 helps build relative URLs support - Improvised methodology to check if
 homepage - Introduced the $base_url variable which holds the base URL of the
 daux. Can be used in index.php to make URLs relative

---
 libs/functions.php | 84 ++++++++++++++++++++++++++++++++++++++++++----
 1 file changed, 77 insertions(+), 7 deletions(-)

diff --git a/libs/functions.php b/libs/functions.php
index 0283e0f..6c88c15 100644
--- a/libs/functions.php
+++ b/libs/functions.php
@@ -16,11 +16,15 @@ error_reporting(E_ALL);
 require_once('libs/markdown_extended.php');
 
 // Check for homepage
-$path = url_path();
-if ($path === '/' || $path === '') {
-	$homepage = true;
-} else {
-	$homepage = false;
+$homepage = (get_uri(false) === "") ? true : false;
+
+// Stores the base url under which daux is running
+$base_url = '/';
+
+// Set the base url of where the script is located
+if (isset($_SERVER['SCRIPT_NAME']))
+{
+    $base_url = substr($_SERVER['SCRIPT_NAME'], 0, strrpos($_SERVER['SCRIPT_NAME'] , '/')); // find the full URL to this application from server root
 }
 
 // Daux.io Functions
@@ -136,7 +140,7 @@ function url_path() {
 }
 
 function url_params() {
-	$url = url_path();
+	$url = get_uri();
 	$params = explode('/', trim($url, '/'));
 	return $params;
 }
@@ -261,4 +265,70 @@ function get_tree($path = '.', $clean_path = '', $title = ''){
 
     return $tree;
 }
-?>
\ No newline at end of file
+
+/**
+ * Get's the current "pretty" URI from the URL.  It will also correct the QUERY_STRING server var and the $_GET array.
+ * It supports all forms of mod_rewrite and the following forms of URL:
+ *
+ * http://example.com/index.php/foo (returns '/foo')
+ * http://example.com/index.php?/foo (returns '/foo')
+ * http://example.com/index.php/foo?baz=bar (returns '/foo')
+ * http://example.com/index.php?/foo?baz=bar (returns '/foo')
+ *
+ * Similarly using mod_rewrite to remove index.php:
+ * http://example.com/foo (returns '/foo')
+ * http://example.com/foo?baz=bar (returns '/foo')
+ *
+ * @author      Dan Horrigan <http://dhorrigan.com>
+ * @copyright   Dan Horrigan
+ * @license     MIT License <http://www.opensource.org/licenses/mit-license.php>
+ * @param   bool    $prefix_slash   whether to return the uri with a '/' in front
+ * @return  string  the uri
+ */
+function get_uri($prefix_slash = true)
+{
+    if (isset($_SERVER['PATH_INFO']))
+    {
+        $uri = $_SERVER['PATH_INFO'];
+    }
+    elseif (isset($_SERVER['REQUEST_URI']))
+    {
+        $uri = $_SERVER['REQUEST_URI'];
+        if (strpos($uri, $_SERVER['SCRIPT_NAME']) === 0)
+        {
+            $uri = substr($uri, strlen($_SERVER['SCRIPT_NAME']));
+        }
+        elseif (strpos($uri, dirname($_SERVER['SCRIPT_NAME'])) === 0)
+        {
+            $uri = substr($uri, strlen(dirname($_SERVER['SCRIPT_NAME'])));
+        }
+
+        // This section ensures that even on servers that require the URI to be in the query string (Nginx) a correct
+        // URI is found, and also fixes the QUERY_STRING server var and $_GET array.
+        if (strncmp($uri, '?/', 2) === 0)
+        {
+            $uri = substr($uri, 2);
+        }
+        $parts = preg_split('#\?#i', $uri, 2);
+        $uri = $parts[0];
+        if (isset($parts[1]))
+        {
+            $_SERVER['QUERY_STRING'] = $parts[1];
+            parse_str($_SERVER['QUERY_STRING'], $_GET);
+        }
+        else
+        {
+            $_SERVER['QUERY_STRING'] = '';
+            $_GET = array();
+        }
+        $uri = parse_url($uri, PHP_URL_PATH);
+    }
+    else
+    {
+        // Couldn't determine the URI, so just return false
+        return false;
+    }
+
+    // Do some final cleaning of the URI and return it
+    return ($prefix_slash ? '/' : '').str_replace(array('//', '../'), '/', trim($uri, '/'));
+}
\ No newline at end of file