From 4af70fef6d3b18b6936b05c3936b5866fd8ad6fe Mon Sep 17 00:00:00 2001
From: Jan Tojnar <jtojnar@gmail.com>
Date: Fri, 14 Jan 2022 05:22:46 +0100
Subject: [PATCH] Fix sitemap

Most importantly, make it work globally.
---
 .htaccess                 |  4 +++-
 2010/.htaccess            |  1 -
 2010/sitemap.php          | 31 -------------------------------
 2012-prosinec/sitemap.php | 31 -------------------------------
 2012/.htaccess            |  1 -
 2012/sitemap.php          | 31 -------------------------------
 2014/sitemap.php          | 31 -------------------------------
 2015-prosinec/sitemap.php | 31 -------------------------------
 2015/sitemap.php          | 31 -------------------------------
 load.lib.php              |  8 ++++----
 sitemap.php               | 26 ++++++++++++++++++++++++++
 11 files changed, 33 insertions(+), 193 deletions(-)
 delete mode 100644 2010/sitemap.php
 delete mode 100644 2012-prosinec/sitemap.php
 delete mode 100644 2012/sitemap.php
 delete mode 100644 2014/sitemap.php
 delete mode 100644 2015-prosinec/sitemap.php
 delete mode 100644 2015/sitemap.php
 create mode 100644 sitemap.php

diff --git a/.htaccess b/.htaccess
index 25d720b..b485443 100644
--- a/.htaccess
+++ b/.htaccess
@@ -5,4 +5,6 @@
 </IfModule>
 
 RewriteEngine on
-RewriteRule ^$ /2015-prosinec [R=302]
+RewriteRule ^$ /2015-prosinec [R=302,L]
+RewriteRule ^/sitemap.php$ [F]
+RewriteRule ^sitemap\.txt$ /sitemap.php
diff --git a/2010/.htaccess b/2010/.htaccess
index 01a9d82..e79f589 100644
--- a/2010/.htaccess
+++ b/2010/.htaccess
@@ -9,7 +9,6 @@ RewriteRule ^de$ /2010/de/ [R,QSA]
 RewriteRule ^cs/$ /2010/index.php?page=main&lang=cs [QSA]
 RewriteRule ^en/$ /2010/index.php?page=main&lang=en [QSA]
 RewriteRule ^de/$ /2010/index.php?page=main&lang=de [QSA]
-RewriteRule ^/sitemap\.txt$ /2010/sitemap.php
 RewriteRule (.*)\.pg$ [F]
 RewriteRule (.*)\.pgc[1-9]$ [F]
 RewriteRule (.*)\.mn$ [F]
diff --git a/2010/sitemap.php b/2010/sitemap.php
deleted file mode 100644
index 6ff9216..0000000
--- a/2010/sitemap.php
+++ /dev/null
@@ -1,31 +0,0 @@
-<?php
-
-header('Content-Type: text/plain; charset=utf-8');
-function directoryToArray($directory, $recursive) {
-    $array_items = [];
-    if ($handle = opendir($directory)) {
-        while (false !== ($file = readdir($handle))) {
-            if ($file != '.' && $file != '..') {
-                if (is_dir($directory . '/' . $file)) {
-                    if ($recursive) {
-                        $array_items = array_merge($array_items, directoryToArray($directory . '/' . $file, $recursive));
-                    }
-                    $file = $directory . '/' . $file;
-                } else {
-                    $file = $directory . '/' . $file;
-                    $array_items[] = preg_replace("/\/\//si", '/', $file);
-                }
-            }
-        }
-        closedir($handle);
-    }
-
-    return $array_items;
-}
-$files = directoryToArray('./pages', true);
-foreach ($files as $file) {
-    if (substr($file, -3) == '.pg' and (substr($file, 0, 17) != './pages/cs/error/' and substr($file, 0, 17) != './pages/en/error/' and substr($file, 0, 17) != './pages/de/error/')) {
-        $list .= substr($file, 0, -3) . "\n";
-    }
-}
-echo str_replace('./pages', 'http://' . $_SERVER['HTTP_HOST'], $list);
diff --git a/2012-prosinec/sitemap.php b/2012-prosinec/sitemap.php
deleted file mode 100644
index 6ff9216..0000000
--- a/2012-prosinec/sitemap.php
+++ /dev/null
@@ -1,31 +0,0 @@
-<?php
-
-header('Content-Type: text/plain; charset=utf-8');
-function directoryToArray($directory, $recursive) {
-    $array_items = [];
-    if ($handle = opendir($directory)) {
-        while (false !== ($file = readdir($handle))) {
-            if ($file != '.' && $file != '..') {
-                if (is_dir($directory . '/' . $file)) {
-                    if ($recursive) {
-                        $array_items = array_merge($array_items, directoryToArray($directory . '/' . $file, $recursive));
-                    }
-                    $file = $directory . '/' . $file;
-                } else {
-                    $file = $directory . '/' . $file;
-                    $array_items[] = preg_replace("/\/\//si", '/', $file);
-                }
-            }
-        }
-        closedir($handle);
-    }
-
-    return $array_items;
-}
-$files = directoryToArray('./pages', true);
-foreach ($files as $file) {
-    if (substr($file, -3) == '.pg' and (substr($file, 0, 17) != './pages/cs/error/' and substr($file, 0, 17) != './pages/en/error/' and substr($file, 0, 17) != './pages/de/error/')) {
-        $list .= substr($file, 0, -3) . "\n";
-    }
-}
-echo str_replace('./pages', 'http://' . $_SERVER['HTTP_HOST'], $list);
diff --git a/2012/.htaccess b/2012/.htaccess
index ddf478e..a4526dd 100644
--- a/2012/.htaccess
+++ b/2012/.htaccess
@@ -9,7 +9,6 @@ RewriteRule ^de$ /2012/de/ [R,QSA]
 RewriteRule ^cs/$ /2012/index.php?page=main&lang=cs [QSA]
 RewriteRule ^en/$ /2012/index.php?page=main&lang=en [QSA]
 RewriteRule ^de/$ /2012/index.php?page=main&lang=de [QSA]
-RewriteRule ^/sitemap\.txt$ /sitemap.php
 RewriteRule (.*)\.pg$ [F]
 RewriteRule (.*)\.pgc[1-9]$ [F]
 RewriteRule (.*)\.mn$ [F]
diff --git a/2012/sitemap.php b/2012/sitemap.php
deleted file mode 100644
index 6ff9216..0000000
--- a/2012/sitemap.php
+++ /dev/null
@@ -1,31 +0,0 @@
-<?php
-
-header('Content-Type: text/plain; charset=utf-8');
-function directoryToArray($directory, $recursive) {
-    $array_items = [];
-    if ($handle = opendir($directory)) {
-        while (false !== ($file = readdir($handle))) {
-            if ($file != '.' && $file != '..') {
-                if (is_dir($directory . '/' . $file)) {
-                    if ($recursive) {
-                        $array_items = array_merge($array_items, directoryToArray($directory . '/' . $file, $recursive));
-                    }
-                    $file = $directory . '/' . $file;
-                } else {
-                    $file = $directory . '/' . $file;
-                    $array_items[] = preg_replace("/\/\//si", '/', $file);
-                }
-            }
-        }
-        closedir($handle);
-    }
-
-    return $array_items;
-}
-$files = directoryToArray('./pages', true);
-foreach ($files as $file) {
-    if (substr($file, -3) == '.pg' and (substr($file, 0, 17) != './pages/cs/error/' and substr($file, 0, 17) != './pages/en/error/' and substr($file, 0, 17) != './pages/de/error/')) {
-        $list .= substr($file, 0, -3) . "\n";
-    }
-}
-echo str_replace('./pages', 'http://' . $_SERVER['HTTP_HOST'], $list);
diff --git a/2014/sitemap.php b/2014/sitemap.php
deleted file mode 100644
index 6ff9216..0000000
--- a/2014/sitemap.php
+++ /dev/null
@@ -1,31 +0,0 @@
-<?php
-
-header('Content-Type: text/plain; charset=utf-8');
-function directoryToArray($directory, $recursive) {
-    $array_items = [];
-    if ($handle = opendir($directory)) {
-        while (false !== ($file = readdir($handle))) {
-            if ($file != '.' && $file != '..') {
-                if (is_dir($directory . '/' . $file)) {
-                    if ($recursive) {
-                        $array_items = array_merge($array_items, directoryToArray($directory . '/' . $file, $recursive));
-                    }
-                    $file = $directory . '/' . $file;
-                } else {
-                    $file = $directory . '/' . $file;
-                    $array_items[] = preg_replace("/\/\//si", '/', $file);
-                }
-            }
-        }
-        closedir($handle);
-    }
-
-    return $array_items;
-}
-$files = directoryToArray('./pages', true);
-foreach ($files as $file) {
-    if (substr($file, -3) == '.pg' and (substr($file, 0, 17) != './pages/cs/error/' and substr($file, 0, 17) != './pages/en/error/' and substr($file, 0, 17) != './pages/de/error/')) {
-        $list .= substr($file, 0, -3) . "\n";
-    }
-}
-echo str_replace('./pages', 'http://' . $_SERVER['HTTP_HOST'], $list);
diff --git a/2015-prosinec/sitemap.php b/2015-prosinec/sitemap.php
deleted file mode 100644
index 6ff9216..0000000
--- a/2015-prosinec/sitemap.php
+++ /dev/null
@@ -1,31 +0,0 @@
-<?php
-
-header('Content-Type: text/plain; charset=utf-8');
-function directoryToArray($directory, $recursive) {
-    $array_items = [];
-    if ($handle = opendir($directory)) {
-        while (false !== ($file = readdir($handle))) {
-            if ($file != '.' && $file != '..') {
-                if (is_dir($directory . '/' . $file)) {
-                    if ($recursive) {
-                        $array_items = array_merge($array_items, directoryToArray($directory . '/' . $file, $recursive));
-                    }
-                    $file = $directory . '/' . $file;
-                } else {
-                    $file = $directory . '/' . $file;
-                    $array_items[] = preg_replace("/\/\//si", '/', $file);
-                }
-            }
-        }
-        closedir($handle);
-    }
-
-    return $array_items;
-}
-$files = directoryToArray('./pages', true);
-foreach ($files as $file) {
-    if (substr($file, -3) == '.pg' and (substr($file, 0, 17) != './pages/cs/error/' and substr($file, 0, 17) != './pages/en/error/' and substr($file, 0, 17) != './pages/de/error/')) {
-        $list .= substr($file, 0, -3) . "\n";
-    }
-}
-echo str_replace('./pages', 'http://' . $_SERVER['HTTP_HOST'], $list);
diff --git a/2015/sitemap.php b/2015/sitemap.php
deleted file mode 100644
index 6ff9216..0000000
--- a/2015/sitemap.php
+++ /dev/null
@@ -1,31 +0,0 @@
-<?php
-
-header('Content-Type: text/plain; charset=utf-8');
-function directoryToArray($directory, $recursive) {
-    $array_items = [];
-    if ($handle = opendir($directory)) {
-        while (false !== ($file = readdir($handle))) {
-            if ($file != '.' && $file != '..') {
-                if (is_dir($directory . '/' . $file)) {
-                    if ($recursive) {
-                        $array_items = array_merge($array_items, directoryToArray($directory . '/' . $file, $recursive));
-                    }
-                    $file = $directory . '/' . $file;
-                } else {
-                    $file = $directory . '/' . $file;
-                    $array_items[] = preg_replace("/\/\//si", '/', $file);
-                }
-            }
-        }
-        closedir($handle);
-    }
-
-    return $array_items;
-}
-$files = directoryToArray('./pages', true);
-foreach ($files as $file) {
-    if (substr($file, -3) == '.pg' and (substr($file, 0, 17) != './pages/cs/error/' and substr($file, 0, 17) != './pages/en/error/' and substr($file, 0, 17) != './pages/de/error/')) {
-        $list .= substr($file, 0, -3) . "\n";
-    }
-}
-echo str_replace('./pages', 'http://' . $_SERVER['HTTP_HOST'], $list);
diff --git a/load.lib.php b/load.lib.php
index 76c0716..34edff9 100644
--- a/load.lib.php
+++ b/load.lib.php
@@ -1,9 +1,9 @@
 <?php
 
-if ($included !== true) {
-    header('HTTP/1.0 403 Forbidden');
-    header('Location: /en/error/403');
-    exit;
+function isHttps(): bool {
+    // https://www.designcise.com/web/tutorial/how-to-check-for-https-request-in-php
+    $isHttps = $_SERVER['HTTPS'] ?? $_SERVER['REQUEST_SCHEME'] ?? $_SERVER['HTTP_X_FORWARDED_PROTO'] ?? null;
+    return $isHttps && (strcasecmp('on', $isHttps) === 0 || strcasecmp('https', $isHttps) === 0);
 }
 
 function readPage(string $page): bool {
diff --git a/sitemap.php b/sitemap.php
new file mode 100644
index 0000000..19d3c0d
--- /dev/null
+++ b/sitemap.php
@@ -0,0 +1,26 @@
+<?php
+
+require __DIR__ . '/load.lib.php';
+
+header('Content-Type: text/plain; charset=utf-8');
+
+$directory = new \RecursiveDirectoryIterator('.');
+$filter = new class($directory) extends \RecursiveFilterIterator {
+    public function accept() {
+        $components = explode('/', $this->current()->getPathname(), 4);
+        return ($this->current()->isDir() && !isset($components[2])) || (isset($components[2]) && $components[2] === 'pages');
+    }
+};
+$iterator = new \RecursiveIteratorIterator($filter);
+
+$isHttps = isHttps();
+foreach ($iterator as $info) {
+    if ($info->isFile()) {
+        [, $year, $pages, $page] = explode('/', $info->getPathname(), 4);
+        if (str_ends_with($page, '.pg') && !str_starts_with($page, 'cs/error/') && !str_starts_with($page, 'en/error/') && !str_starts_with($page, 'de/error/')) {
+            $file = substr($page, 0, -3);
+            $file = str_replace('/pages', '', $file);
+            echo ($isHttps ? 'https' : 'http') . '://' . $_SERVER['HTTP_HOST'] . '/' . $year . '/' . $file . "\n";
+        }
+    }
+}