mirror of
https://codeberg.org/Codeberg/pages-server.git
synced 2025-01-19 08:57:55 +00:00
105 lines
3.5 KiB
PHP
105 lines
3.5 KiB
PHP
<?php
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function send_response($code, $message) {
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http_response_code($code);
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echo $message;
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exit();
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}
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$request_url = filter_var($_SERVER["PHP_SELF"], FILTER_SANITIZE_URL);
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if ($request_url === "/" and $_SERVER["HTTP_HOST"] === "codeberg.eu") {
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send_response(200, file_get_contents("./default-page.html"));
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}
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# Restrict allowed characters in request URI:
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if (preg_match("/^\/[a-zA-Z0-9_ +\-\/\.]*\$/", $request_url) != 1) {
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send_response(404, "invalid request URL");
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}
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$git_prefix = "/data/git/gitea-repositories";
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$parts = explode("/", $request_url);
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$parts = array_diff($parts, array("")); # Remove empty parts in URL
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$parts_dot = explode(".",$_SERVER["HTTP_HOST"]);
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if (count($parts_dot) != 3)
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{
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send_response(404, "invalid subdomain");
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}
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$owner = $parts_dot[0];
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$git_root = realpath("$git_prefix/$owner/pages.git");
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$file_url = implode("/", $parts);
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# Ensure that only files within $git_root are accessed:
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if (substr($git_root, 0, strlen($git_prefix)) !== $git_prefix) {
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send_response(404, "this user/organization does not have codeberg pages");
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}
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# If this is a folder, we explicitly redirect to folder URL, otherwise browsers will construct invalid relative links:
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$command = "sh -c \"cd '$git_root' && /usr/bin/git ls-tree 'HEAD:$file_url' > /dev/null\"";
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exec($command, $output, $retval);
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if ($retval === 0) {
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if (substr($request_url, -1) !== "/") {
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$h = "Location: " . $request_url . "/";
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if ($_SERVER['QUERY_STRING'] !== "")
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$h .= "?" . $_SERVER['QUERY_STRING'];
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header($h);
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exit();
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}
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if ($file_url !== "")
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$file_url .= "/";
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$file_url .= "index.html";
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}
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$ext = pathinfo($file_url, PATHINFO_EXTENSION);
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$ext = strtolower($ext);
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$mime_types = array(
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"css" => "text/css",
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"csv" => "text/csv",
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"gif" => "image/gif",
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"html" => "text/html",
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"ico" => "image/x-icon",
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"ics" => "text/calendar",
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"jpg" => "image/jpeg",
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"jpeg" => "image/jpeg",
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"js" => "application/javascript",
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"json" => "application/json",
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"pdf" => "application/pdf",
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"png" => "image/png",
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"svg" => "image/svg+xml",
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"ttf" => "font/ttf",
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"txt" => "text/plain",
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"woff" => "font/woff",
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"woff2" => "font/woff2",
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"xml" => "text/xml"
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);
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if (array_key_exists($ext, $mime_types)) {
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header("Content-Type: " . $mime_types[$ext]);
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} else {
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header("Content-Type: application/octet-stream");
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}
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## We are executing command twice (first for send_response-checking, then for actual raw output to stream),
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## which seems wasteful, but it seems exec+echo cannot do raw binary output? Is this true?
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$command = "sh -c \"cd '$git_root' && /usr/bin/git show 'HEAD:$file_url'\"";
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exec($command . " > /dev/null", $output, $retval);
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if ($retval != 0) {
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# Try adding '.html' suffix, if this does not work either, report error
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$command = "sh -c \"cd '$git_root' && /usr/bin/git show 'HEAD:$file_url.html'\"";
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exec($command . " > /dev/null", $output, $retval);
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header("Content-Type: text/html");
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if ($retval != 0) {
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# Render user-provided 404.html if exists, generic 404 message if not:
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http_response_code(404);
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$command = "sh -c \"cd '$git_root' && /usr/bin/git show 'HEAD:404.html'\"";
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exec($command . " > /dev/null", $output, $retval);
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if ($retval != 0)
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send_response(404 , "no such file in repo: '" . htmlspecialchars($file_url) . "'");
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}
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}
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## If we could directly exec+echo raw output from above, we wouldn't need to execute command twice:
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passthru($command);
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