Pritup pres PHP a docker

2026-08-16 20:09:42 +02:00
parent 5b8e535be0
commit d2099b9a6c
7 changed files with 178 additions and 2 deletions
--- a/app/public/index.php
+++ b/app/public/index.php
@@ -0,0 +1,109 @@
+<?php
+
+declare(strict_types=1);
+
+define('REPO_RAW_BASE_URL', getenv('REPO_RAW_BASE_URL') ?: 'https://git.fnet.cz/lachtan/get/raw/branch/master/');
+const MANIFEST_PATH = 'manifest.yaml';
+const TEMPLATES_DIRECTORY = __DIR__ . '/../templates';
+const FETCH_TIMEOUT_SECONDS = 5;
+
+function sendPlainTextError(int $statusCode, string $message): never
+{
+    http_response_code($statusCode);
+    header('Content-Type: text/plain; charset=utf-8');
+    echo $message . "\n";
+    exit;
+}
+
+function fetchRaw(string $relativePath): string|false
+{
+    $url = REPO_RAW_BASE_URL . ltrim($relativePath, '/');
+
+    $curl = curl_init($url);
+    curl_setopt_array($curl, [
+        CURLOPT_RETURNTRANSFER => true,
+        CURLOPT_FAILONERROR => true,
+        CURLOPT_FOLLOWLOCATION => true,
+        CURLOPT_MAXREDIRS => 3,
+        CURLOPT_TIMEOUT => FETCH_TIMEOUT_SECONDS,
+    ]);
+
+    $content = curl_exec($curl);
+
+    return is_string($content) ? $content : false;
+}
+
+function escapeForDoubleQuotedShellString(string $value): string
+{
+    return str_replace(['\\', '"', '$', '`'], ['\\\\', '\\"', '\\$', '\\`'], $value);
+}
+
+function resolveHomePath(string $path): string
+{
+    if ($path === '~' || str_starts_with($path, '~/')) {
+        return '$HOME' . escapeForDoubleQuotedShellString(substr($path, 1));
+    }
+
+    return escapeForDoubleQuotedShellString($path);
+}
+
+function renderScriptTemplate(string $templateName, array $placeholders): string|false
+{
+    $path = TEMPLATES_DIRECTORY . '/' . $templateName . '.sh.tpl';
+
+    if (!is_file($path)) {
+        return false;
+    }
+
+    $script = file_get_contents($path);
+
+    foreach ($placeholders as $key => $value) {
+        $script = str_replace('{{' . $key . '}}', $value, $script);
+    }
+
+    return $script;
+}
+
+$requestPath = parse_url($_SERVER['REQUEST_URI'] ?? '/', PHP_URL_PATH) ?? '/';
+$name = trim(rawurldecode($requestPath), '/');
+
+if ($name === '') {
+    sendPlainTextError(400, 'Missing name of the installable item');
+}
+
+$manifestYaml = fetchRaw(MANIFEST_PATH);
+
+if ($manifestYaml === false) {
+    sendPlainTextError(502, 'Failed to fetch the manifest from git.fnet.cz');
+}
+
+$manifest = yaml_parse($manifestYaml);
+
+if ($manifest === false) {
+    sendPlainTextError(502, 'Failed to parse the manifest from git.fnet.cz');
+}
+
+$entry = $manifest[$name] ?? null;
+
+if ($entry === null) {
+    sendPlainTextError(404, "Unknown item '$name'");
+}
+
+if (!is_string($entry['source'] ?? null) || !is_string($entry['target'] ?? null) || !is_string($entry['template'] ?? null)) {
+    sendPlainTextError(500, "Malformed manifest entry for item '$name'");
+}
+
+$variables = [
+    'SOURCE_URL' => REPO_RAW_BASE_URL . escapeForDoubleQuotedShellString(ltrim($entry['source'], '/')),
+    'TARGET_PATH' => resolveHomePath($entry['target']),
+    'POST_INSTALL' => $entry['post_install'] ?? '',
+];
+
+$script = renderScriptTemplate($entry['template'], $variables);
+
+if ($script === false) {
+    sendPlainTextError(500, 'Template for this item is missing');
+}
+
+header('Content-Type: text/x-shellscript; charset=utf-8');
+echo $script;