From 8c5a65bab34da63270e6a4bc8a97df5cc5df7b3f Mon Sep 17 00:00:00 2001
From: Andreas Baumann <mail@andreasbaumann.cc>
Date: Fri, 19 Mar 2021 08:03:43 +0100
Subject: index.php: add get_news functions to avoid code duplication

---
 lib/helper.php | 47 ++++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 46 insertions(+), 1 deletion(-)

(limited to 'lib')

diff --git a/lib/helper.php b/lib/helper.php
index a81eedf..ad089bf 100644
--- a/lib/helper.php
+++ b/lib/helper.php
@@ -143,7 +143,7 @@ function if_unset($array, $index, $default) {
 };
 
 function site_is_reachable($url) {
-  $stream_context = stream_context_create(array('timeout' => 10));
+  $stream_context = stream_context_create(array('http' => array('timeout' => 10)));
   $headers = get_headers($url, 0, $stream_context);
   if (is_array($headers))
     foreach ($headers as $header) {
@@ -156,6 +156,51 @@ function site_is_reachable($url) {
   return false;
 }
 
+function get_news($name, $url, $ttl) {
+  // clear cache if you have to push out new news fast, otherwise wait for $ttl seconds
+  //apcu_clear_cache();
+  
+  $news = apcu_fetch($name, $apcu_success);
+  if( $apcu_success == false ) {
+    $news_reachable = apcu_fetch($name."_reachable", $apcu_success);
+    if ($apcu_success == false) {
+      if (site_is_reachable($url)) {
+        $news_reachable = 'YES';
+      } else {
+        $news_reachable = 'NO';
+      }
+      apcu_store($name."_reachable", $news_reachable, $ttl);
+    }
+    if ($news_reachable == 'YES') {
+      $ch = curl_init($url);
+      if( $ch != null && $ch != false ) {
+        curl_setopt($ch, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4);
+        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
+        curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
+        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
+        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
+        curl_setopt($ch, CURLOPT_VERBOSE,1);
+        $news = curl_exec($ch);
+        $httpcode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
+        curl_close($ch);
+        if( $httpcode >= 200 && $httpcode < 300 ) {
+          apcu_store($name,  $news, $ttl);
+        } else {
+          $news = false;
+        }
+      } else {
+        $news = false;
+      }
+    } else {
+      $news = false;
+    }
+  }
+  if ($news != false) {
+    $news = simplexml_load_string($news);
+  }
+  return $news;
+}
+
 function add_fancy_unit($value, $unit) {
   $suffixes = array("z", "y", "a", "f", "p", "n", "µ", "m", "", "k", "M", "G", "T", "P", "Y", "Z");
   if ($value==0)
-- 
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