Added path based redirect

freifunk-berlin · Oct 10, 2023 · 9f0145b · 9f0145b
1 parent 79aa1e0
commit 9f0145b
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Showing 2 changed files with 97 additions and 10 deletions.
diff --git a/apache/util.conf b/apache/util.conf
@@ -54,3 +54,34 @@
         CustomLog /var/log/apache2/util.berlin.freifunk.net-access.log combined
         ErrorLog  /var/log/apache2/util.berlin.freifunk.net-error.log
 </VirtualHost>
+
+<VirtualHost *:443>
+    ServerName ff.berlin
+    ServerAdmin "info@berlin.freifunk.net"
+    SSLEngine on
+    SSLCertificateFile      /etc/letsencrypt/live/ff.berlin/cert.pem
+    SSLCertificateChainFile /etc/letsencrypt/live/ff.berlin/chain.pem
+    SSLCertificateKeyFile   /etc/letsencrypt/live/ff.berlin/privkey.pem
+
+    DocumentRoot /var/www/util.berlin.freifunk.net/www
+
+    <Directory /var/www/util.berlin.freifunk.net/www>
+            Options +FollowSymLinks -Indexes
+            AllowOverride None
+            Require all granted
+    </Directory>
+
+    # Always call the knoteninfo.php script
+    DirectoryIndex knoteninfo.php
+
+    # Deny access to all other PHP files
+    <FilesMatch "\.php$">
+        Require all denied
+    </FilesMatch>
+    <Files "knoteninfo.php">
+        Require all granted
+    </Files>
+
+    CustomLog /var/log/apache2/ff.berlin-access.log combined
+    ErrorLog  /var/log/apache2/ff.berlin-error.log
+</VirtualHost>
diff --git a/www/knoteninfo.php b/www/knoteninfo.php
@@ -1,15 +1,66 @@
 <?php
 
-// https://util.berlin.freifunk.net/knoteninfo?knoten=Zwingli-Nord-2GHz&typ=wiki
+// Query based redirect
+// Example: https://util.berlin.freifunk.net/knoteninfo?knoten=Zwingli-Nord-2GHz&typ=wiki
 // typ: wiki, monitor, owm, hopglass
+//
+// Path based redirect
+// Example: https://ff.berlin/d/linie206-core
+// /d/ -> documentation (wiki)
+// /m/ -> map (hopglass)
+// /s/ -> statistics (monitor)
+
+$path_elements = getPathElements($_SERVER['REQUEST_URI'], $_SERVER['SCRIPT_NAME']);
+
+if (count($_GET)) {
+  $knoten = ($_GET["knoten"] ?? "%");
+  $typ = ($_GET["typ"] ?? "");
+} else if (count($path_elements) == 2) {
+  switch ($path_elements[0]) {
+    case "d":
+      $typ = "wiki";
+      break;
+    case "m":
+      $typ = "hopglass";
+      break;
+    case "s":
+      $typ = "monitor";
+      break;
+  }
+  ;
+  $knoten = $path_elements[1];
+} else {
+  die("Keine gültige Anfrage.");
+}
 
-$knoten = ($_GET["knoten"] ?? "%");
 $knoten = preg_replace("/\.olsr$/", "", $knoten);
 
 if(preg_match('/[^A-Za-z0-9\\.\\-\\_]/', $knoten)) die("Ungültiger Knotenname.");
 
-$typ = ($_GET["typ"] ?? "");
+/**
+ * getPathElements
+ * @param string $request_uri
+ * @param string $script_name
+ * @return array|bool
+ */
+function getPathElements($request_uri, $script_name) {
+
+  if (strpos($request_uri, $script_name) === 0) {
+    $request_path = substr($request_uri, strlen($script_name));
+  } else {
+    $request_path = $request_uri;
+  }
+
+  $parsed_url = parse_url($request_path);
+  $path = $parsed_url['path'];
+  return explode('/', trim($path, '/'));
+}
 
+/**
+ * getUrl
+ * @param string $url
+ * @return string
+ */
 function getUrl($url) {
   $ctx = stream_context_create(["http" => ["method" => "GET"]]);
   $fp = fopen($url, "r", false, $ctx);
@@ -18,7 +69,12 @@ function getUrl($url) {
   return $res;
 }
 
-function getWikiLink($knoten) {
+/**
+ * getWikiLink
+ * @param string $knoten
+ * @return bool|string
+ */
+function getWikiLink($knoten){
   $url = "https://wiki.freifunk.net/api.php?action=ask&query=[[Hat_Knoten%3A%3A".$knoten."]]|%3FModification%20date|sort%3DModification%20date|order%3Ddesc&format=json";
   $body = getUrl($url);
   $json = json_decode($body);
@@ -56,11 +112,11 @@ function getWikiLink($knoten) {
 
 echo "<i>$knoten</i> auf...";
 echo "<ul>".
-     "<li><a href=\"$owmurl\">openwifimap.net</a></li>".
-     "<li><a href=\"$hgurl\">hopglass.berlin.freifunk.net</a></li>".
-     "<li><a href=\"/knoteninfo?knoten=$knoten&typ=wiki\">wiki.freifunk.net</a></li>".
-     "<li><a href=\"$monurl\">monitor.berlin.freifunk.net</a></li>".
-     "</ul>".
-     "zu <a href=\"https://berlin.freifunk.net/\">berlin.freifunk.net</a></body>";
+  "<li><a href=\"$owmurl\">openwifimap.net</a></li>".
+  "<li><a href=\"$hgurl\">hopglass.berlin.freifunk.net</a></li>".
+  "<li><a href=\"/knoteninfo?knoten=$knoten&typ=wiki\">wiki.freifunk.net</a></li>".
+  "<li><a href=\"$monurl\">monitor.berlin.freifunk.net</a></li>".
+  "</ul>".
+  "zu <a href=\"https://berlin.freifunk.net/\">berlin.freifunk.net</a></body>";
 
 ?>