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Fix routing regex and add template escaping in worker.js #22

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Fix routing regex and add template escaping in worker.js #22

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37 changes: 25 additions & 12 deletions worker.js
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Original file line number Diff line number Diff line change
Expand Up @@ -51,6 +51,19 @@ const webviewTemplate = `<!DOCTYPE html><html><head><meta charset="UTF-8"><meta
/**
* Helper functions
*/
function escapeForScript(str) {
if (!str) return '';
return String(str)
.replace(/\\/g, '\\\\')
.replace(/'/g, "\\'")
.replace(/"/g, '\\"')
.replace(/\n/g, '\\n')
.replace(/\r/g, '\\r')
.replace(/</g, '\\u003c')
.replace(/>/g, '\\u003e')
.replace(/&/g, '\\u0026');
}

function decodeBase64(str) {
try {
return decodeURIComponent(escape(atob(str)));
Expand All @@ -64,18 +77,18 @@ function renderTemplate(template, data) {
let rendered = template;

// Replace all placeholders with actual data
rendered = rendered.replace(/REPLACE_UID/g, data.uid || '');
rendered = rendered.replace(/REPLACE_URL/g, data.url || '');
rendered = rendered.replace(/REPLACE_HOST_URL/g, data.a || '');
rendered = rendered.replace(/REPLACE_IP/g, data.ip || '');
rendered = rendered.replace(/REPLACE_TIME/g, data.time || '');
rendered = rendered.replace(/REPLACE_UID/g, () => escapeForScript(data.uid || ''));
rendered = rendered.replace(/REPLACE_URL/g, () => escapeForScript(data.url || ''));
rendered = rendered.replace(/REPLACE_HOST_URL/g, () => escapeForScript(data.a || ''));
rendered = rendered.replace(/REPLACE_IP/g, () => escapeForScript(data.ip || ''));
rendered = rendered.replace(/REPLACE_TIME/g, () => escapeForScript(data.time || ''));

// Also handle the newer template format
rendered = rendered.replace(/\{\{UID\}\}/g, data.uid || '');
rendered = rendered.replace(/\{\{REDIRECT_URL\}\}/g, data.url || '');
rendered = rendered.replace(/\{\{HOST_URL\}\}/g, data.a || '');
rendered = rendered.replace(/\{\{IP\}\}/g, data.ip || '');
rendered = rendered.replace(/\{\{TIME\}\}/g, data.time || '');
rendered = rendered.replace(/\{\{UID\}\}/g, () => escapeForScript(data.uid || ''));
rendered = rendered.replace(/\{\{REDIRECT_URL\}\}/g, () => escapeForScript(data.url || ''));
rendered = rendered.replace(/\{\{HOST_URL\}\}/g, () => escapeForScript(data.a || ''));
rendered = rendered.replace(/\{\{IP\}\}/g, () => escapeForScript(data.ip || ''));
rendered = rendered.replace(/\{\{TIME\}\}/g, () => escapeForScript(data.time || ''));

return rendered;
}
Expand Down Expand Up @@ -395,8 +408,8 @@ async function handleRequest(request, env) {
}

// Handle c/ and w/ paths (cloudflare and webview templates)
const cloudflareMatch = path.match(/^\/c\/([^/]+)\/([^/]+)/);
const webviewMatch = path.match(/^\/w\/([^/]+)\/([^/]+)/);
const cloudflareMatch = path.match(/^\/c\/([^/]+)\/(.+)/);
const webviewMatch = path.match(/^\/w\/([^/]+)\/(.+)/);

if (cloudflareMatch) {
const [, uid, uri] = cloudflareMatch;
Expand Down