1
0
mirror of https://tildegit.org/sbgodin/HtmGem.git synced 2023-08-25 13:53:12 +02:00
HtmGem/index.php

130 lines
3.3 KiB
PHP
Raw Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

<?php
require_once "lib-htmgem.php";
# The url argument is always absolute compared to the document root.
$url = @$_REQUEST["url"];
$urlRewriting = @$_REQUEST["rw"]=="1";
/* Installation page
*
* Accessing directly /htmgem will make display the self-hosted documentation
* contained in "index.gmi". If it's removed, display an empty page with a
* comment
*/
if (empty($url)) {
if (!file_exists("index.gmi")) {
http_response_code(403);
die("<!-- index.gmi missing -->");
}
$t = new \htmgem\GemTextTranslate_html(@file_get_contents("index.gmi"), true, "/htmgem");
echo $t->getFullHtml();
exit();
}
$documentRoot = $_SERVER['DOCUMENT_ROOT'];
if (!preg_match("/\.gmi$/", $url)) {
if ($url[-1] == "/")
$url = $url."index.gmi";
else
$url = $url."/index.gmi";
}
# Removes the headling and trailling slashes, to be sure there's not any.
$filePath = rtrim($_SERVER['DOCUMENT_ROOT'], "/")."/".ltrim($url, "/");
switch(true) {
case !realPath($filePath):
case strpos($filePath, $documentRoot)!==0: # not in web directory
$go404 = true;
// Says 404 even if the file exists to not give any information.
break;
default:
$go404 = false;
}
/* 404 page
*/
if ($go404) {
error_log("HtmGem: 404 $url $filePath");
http_response_code(404);
$page404 = <<<EOF
# ⚠ Page non trouvée
**$url**
=> .. 🔄 🔄
EOF;
$t = new \htmgem\GemTextTranslate_html($page404);
echo $t->getFullHtml();
exit();
}
# to false only if textDecoration=0 in the URL
$textDecoration = "0" != @$_REQUEST['textDecoration'];
$fileContents = @file_get_contents($filePath);
# Removes the Byte Order Mark
$fileContents = preg_replace("/\xEF\xBB\xBF/", "", $fileContents);
/* CSS and special style management
*/
$style = @$_REQUEST['style'];
if ("source" == $style) {
$basename = basename($filePath);
header("Cache-Control: public");
header("Content-Disposition: attachment; filename=$basename");
header("Content-Type: text/plain");
header("Content-Transfer-Encoding: binary");
header('Content-Length: ' . filesize($filePath));
echo $fileContents;
exit();
} elseif ("pre" == $style) {
# Gets the page title: the first occurrence with # at the line start
mb_ereg("#\s*([^\n]+)\n", $fileContents, $matches);
$page_title = @$matches[1];
$fileContents = htmlspecialchars($fileContents, ENT_HTML5|ENT_QUOTES, "UTF-8", true);
echo <<<EOL
<!DOCTYPE html>
<html>
<head>
<title>$page_title</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<pre>
$fileContents</pre>
</body>
</html>
EOL;
exit();
}
if ($urlRewriting)
$baseUrl = null;
else
$baseUrl = dirname($url);
$t = new \htmgem\GemTextTranslate_html($fileContents, $textDecoration, $baseUrl);
if ("none" == $style) {
$t->addCss("");
} elseif ("/" == @$style[0]) {
$t->addCss($style);
} elseif (empty($style)) {
$parts = pathinfo($filePath);
$localCss = $parts["filename"].".css";
$localCssFilePath = $parts["dirname"]."/".$localCss;
if (file_exists($localCssFilePath)) {
# Warning, using htmhem.php?url=… will make $localCss not found
# as the path is relative to htmgem.php and not / !
$t->addCss($localCss);
}
} else { #TODO: regex check for $style
$t->addCss("/htmgem/css/$style.css");
}
echo $t->getFullHtml();
?>