edit: restrict to whitelisted ip addresses

[minimedit.git] / edit.php

diff --git a/edit.php b/edit.php
index 14bfde092a06c0384fa76d1ade619e037e519026..398581e1e7c6ffbf3578e6b0296f63aa1b844af8 100644 (file)
--- a/edit.php
+++ b/edit.php
@@ -5,20 +5,24 @@ function abort($status, $body) {
        exit;
 }
 
-$filename = $_POST['page'];
-$filename = ltrim($filename, '/');
-if (!preg_match('/^[a-z]+\.html$/', $filename))
-       abort('403 input error', "Ongeldige bestandsnaam: $filename");
+if (!$_POST)
+       abort('405 post error', "niets te doen");
+if (!isset($_POST['page']))
+       abort('409 input error', "geen bestand aangeleverd");
+
+$filename = preg_replace('/(?:\.html)?$/', '.html', ltrim($_POST['page'], '/'), 1);
+if (file_exists($filename) and !is_writable($filename))
+       abort('403 input error', "ongeldige bestandsnaam: $filename");
 
 $prepend = '<!--#include virtual="common.html" -->'."\n\n";
-$append  = "\n\n".'<!--#include virtual="footer.html" -->'."\n";
+$append  = "\n".'<!--#include virtual="footer.html" -->'."\n";
 $upload = $_POST['body'];
 
 if (!$upload)
        abort('409 input error', "leeg bestand aangeleverd");
 
 if (!file_put_contents($filename, $prepend . $upload . $append))
-       abort('500 save error', "kon bestand niet overschrijven");
+       abort('500 save error', "fout bij schrijven van $filename");
 
 print "Bestand opgeslagen";