doc: contributing: remove leftover link to wiki

[github/shaarli/Shaarli.git] / application / HttpUtils.php

diff --git a/application/HttpUtils.php b/application/HttpUtils.php
index 27a39d3df223be0f457e8f3966a5b1bd7db7aefd..a81f90565fb3b79349981cadb049de3a2fe2d6aa 100644 (file)
--- a/application/HttpUtils.php
+++ b/application/HttpUtils.php
@@ -122,7 +122,7 @@ function get_http_response($url, $timeout = 30, $maxBytes = 4194304)
     $content = substr($response, $headSize);
     $headers = array();
     foreach (preg_split('~[\r\n]+~', $rawHeadersLastRedir) as $line) {
-        if (empty($line) or ctype_space($line)) {
+        if (empty($line) || ctype_space($line)) {
             continue;
         }
         $splitLine = explode(': ', $line, 2);
@@ -297,9 +297,17 @@ function server_url($server)
             // Keep forwarded port
             if (strpos($server['HTTP_X_FORWARDED_PORT'], ',') !== false) {
                 $ports = explode(',', $server['HTTP_X_FORWARDED_PORT']);
-                $port = ':' . trim($ports[0]);
+                $port = trim($ports[0]);
             } else {
-                $port = ':' . $server['HTTP_X_FORWARDED_PORT'];
+                $port = $server['HTTP_X_FORWARDED_PORT'];
+            }
+
+            if (($scheme == 'http' && $port != '80')
+                || ($scheme == 'https' && $port != '443')
+            ) {
+                $port = ':' . $port;
+            } else {
+                $port = '';
             }
         }
 
@@ -355,3 +363,29 @@ function page_url($server)
     }
     return index_url($server);
 }
+
+/**
+ * Retrieve the initial IP forwarded by the reverse proxy.
+ *
+ * Inspired from: https://github.com/zendframework/zend-http/blob/master/src/PhpEnvironment/RemoteAddress.php
+ *
+ * @param array $server     $_SERVER array which contains HTTP headers.
+ * @param array $trustedIps List of trusted IP from the configuration.
+ *
+ * @return string|bool The forwarded IP, or false if none could be extracted.
+ */
+function getIpAddressFromProxy($server, $trustedIps)
+{
+    $forwardedIpHeader = 'HTTP_X_FORWARDED_FOR';
+    if (empty($server[$forwardedIpHeader])) {
+        return false;
+    }
+
+    $ips = preg_split('/\s*,\s*/', $server[$forwardedIpHeader]);
+    $ips = array_diff($ips, $trustedIps);
+    if (empty($ips)) {
+        return false;
+    }
+
+    return array_pop($ips);
+}