From 53ed898c6882b5f16b13d311181866ed8f72751c Mon Sep 17 00:00:00 2001
From: Oleg Sh <soft_support@list.ru>
Date: Sat, 12 Oct 2024 18:40:51 +0200
Subject: [PATCH]  Added cross domain grap loading.

---
 backend/crossDomain.php | 18 ++++++++++++++++++
 backend/loadGraph.php   | 25 +++++++++++++++++++++++--
 2 files changed, 41 insertions(+), 2 deletions(-)
 create mode 100644 backend/crossDomain.php

diff --git a/backend/crossDomain.php b/backend/crossDomain.php
new file mode 100644
index 0000000..de45682
--- /dev/null
+++ b/backend/crossDomain.php
@@ -0,0 +1,18 @@
+<?php
+/*
+   Function to save/open graph
+   */
+
+// Domains of service.
+$domains = array(
+    "graphonline.ru",
+    "graphonline.top",
+);
+
+function isCurrentDomain($domain)
+{
+    return strtolower($domain) == strtolower($_SERVER['SERVER_NAME']);
+}
+
+
+?>
\ No newline at end of file
diff --git a/backend/loadGraph.php b/backend/loadGraph.php
index 5491436..319a417 100644
--- a/backend/loadGraph.php
+++ b/backend/loadGraph.php
@@ -2,12 +2,33 @@
 
   include ("../core/config/main.php");
   include ("saveGraphHelpers.php");
+  include ("crossDomain.php");
 
   $name  = $_GET["name"];
-
+  $log = "";
   if (isValidName($name))
   {
-  	echo (gzuncompress(file_get_contents(getXMLFileName($name))));
+    $content = file_get_contents(getXMLFileName($name));
+    // Try to find on extarnal domains
+    if (false === $content) 
+    {
+      foreach ($domains as $domain) 
+      {
+        if (!isCurrentDomain($domain))
+        {
+          $log .= "<!-- Search in $domain -->\n";
+          $content = file_get_contents("https://" . $domain . "/" . getXMLFileName($name, true));
+          if (false !== $content)
+          {
+            $content = $content;
+            $log .= "<!-- Got from $domain -->\n";
+            break;
+          }
+        }
+      }
+    }
+
+  	echo (gzuncompress($content) . $log);
   }
 
   echo ("");