Add app/courses/proxy.php add rule in .htaccess to allow that file

BT#15402

.htaccess

@@ -9,7 +9,7 @@
 RewriteEngine on
 
 # Prevent execution of PHP from directories used for different types of uploads
-RedirectMatch 403 ^/app/(cache|courses|home|logs|upload|Resources/public/css)/.*\.ph(p[3457]?|t|tml|ar)$
+RedirectMatch 403 ^/app/(?!courses/proxy)(cache|courses|home|logs|upload|Resources/public/css)/.*\.ph(p[3457]?|t|tml|ar)$
 RedirectMatch 403 ^/main/default_course_document/images/.*\.ph(p[3457]?|t|tml|ar)$
 RedirectMatch 403 ^/main/lang/.*\.ph(p[3457]?|t|tml|ar)$
 RedirectMatch 403 ^/web/css/.*\.ph(p[3457]?|t|tml|ar)$

tests/scripts/proxy.php

@@ -1,145 +0,0 @@
-<?php
-/* For licensing terms, see /license.txt */
-
-/**
- * Script needed in order to avoid mixed content in links inside a learning path
- * In order to use this file you have to:
- *
- * 1. Modify configuration.php and add this setting: $_configuration['lp_fix_embed_content'] = true;
- * 2. Copy this file in app/courses/proxy.php
- * 3. Change your .htaccess in order to let the proxy.php to be read inside app/courses
- *
- */
-
-require_once '../config/configuration.php';
-
-/**
- * Returns "%" or "px"
- *
- * 800px => function returns "px"
- * 800% => function returns %
- *
- * @param string $value
- * @return string
- */
-function addPixelOrPercentage($value)
-{
-    $addPixel = strpos($value, 'px');
-    $addPixel = !($addPixel === false);
-    $addCharacter = '';
-    if ($addPixel == false) {
-        $addPercentage = strpos($value, '%');
-        $addPercentage = !($addPercentage === false);
-        if ($addPercentage) {
-            $addCharacter = '%';
-        }
-    } else {
-        $addCharacter = 'px';
-    }
-
-    return $addCharacter;
-}
-
-function get_http_response_code($theURL)
-{
-    $headers = get_headers($theURL);
-
-    return substr($headers[0], 9, 3);
-}
-
-
-$height = isset($_GET['height']) ? (int) $_GET['height'].addPixelOrPercentage($_GET['height']) : '';
-$width = isset($_GET['width']) ? (int) $_GET['width'].addPixelOrPercentage($_GET['width'])  : '';
-$vars = isset($_GET['flashvars']) ? htmlentities($_GET['flashvars']) : '';
-$src = isset($_GET['src']) ? htmlentities($_GET['src']) : '';
-$id = isset($_GET['id']) ? htmlentities($_GET['id']) : '';
-$type = isset($_GET['type']) ? $_GET['type'] : 'flash';
-
-// Fixes URL like: https://www.vopspsy.ugent.be/pdfs/download.php?own=mvsteenk&file=caleidoscoop.pdf
-if (strpos($src, 'download.php') !== false) {
-    $src = str_replace('download.php', 'download.php?', $src);
-    $src .= isset($_GET['own']) ? '&own='.htmlentities($_GET['own']) : '';
-    $src .= isset($_GET['file']) ? '&file='.htmlentities($_GET['file']) : '';
-}
-
-$result = get_http_response_code($src);
-$urlToTest = parse_url($src, PHP_URL_HOST);
-$g = stream_context_create (array('ssl' => array('capture_peer_cert' => true)));
-$r = @stream_socket_client("ssl://$urlToTest:443", $errno, $errstr, 30, STREAM_CLIENT_CONNECT, $g);
-$cont = stream_context_get_params($r);
-$convertToSecure = false;
-
-$certinfo = openssl_x509_parse($cont['options']['ssl']['peer_certificate']);
-if (isset($certinfo) && isset($certinfo['subject']) && isset($certinfo['subject']['CN'])) {
-    $certUrl = $certinfo['subject']['CN'];
-    $parsed = parse_url($certUrl);
-
-    // Remove www from URL
-    $parsedUrl = preg_replace('#^(http(s)?://)?w{3}\.#', '$1', $certUrl);
-
-    if ($urlToTest == $certUrl || $parsedUrl == $urlToTest) {
-        $convertToSecure = true;
-    }
-
-    if ($urlToTest != $certUrl) {
-        // url and cert url are different this will show a warning in browsers
-        // use normal "http" version
-        $result = false;
-    }
-}
-
-if ($result == false) {
-    $src = str_replace('https', 'http', $src);
-}
-
-if ($convertToSecure) {
-    $src = str_replace('http', 'https', $src);
-}
-
-$result = '';
-switch ($type) {
-    case 'link':
-        // Check if links comes from a course
-        $srcParts = explode('/', $src);
-        $srcParts = array_filter($srcParts);
-        $srcParts = array_values($srcParts);
-
-        if (isset($srcParts[0], $srcParts[2]) && $srcParts[0] === 'courses' && $srcParts[2] === 'document') {
-            $src = $_configuration['root_web'].$src;
-        }
-
-        if (strpos($src, 'http') === false) {
-            $src = "http://$src";
-        }
-        header('Location: '.$src);
-        exit;
-        break;
-    case 'iframe':
-        $result = '<iframe src="'.$src.'" width="'.$width.'" height="'.$height.'" ></iframe>';
-        break;
-    case 'flash':
-        $result =  '
-        <object 
-            id="'.$id.'" width="'.$width.'" height="'.$height.'" align="center"
-            codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,40,0">
-            <param name="id" value="'.$id.'">
-            <param name="width" value="'.$width.'">
-            <param name="height" value="'.$height.'">
-            <param name="bgcolor" value="#ffffff">
-            <param name="align" value="center">
-            <param name="allowfullscreen" value="true">
-            <param name="allowscriptaccess" value="always">
-            <param name="quality" value="high">
-            <param name="wmode" value="transparent">
-            <param name="flashvars" value="'.$vars.'">
-            <param name="src" value="'.$src.'">
-            <embed 
-                id="'.$id.'" width="'.$width.'" height="'.$height.'" bgcolor="#ffffff" align="center" 
-                allowfullscreen="true" allowscriptaccess="always" quality="high" wmode="transparent" 
-                flashvars="'.$vars.'" src="'.$src.'"
-                type="application/x-shockwave-flash" 
-            >
-        </object>';
-}
-
-echo $result;