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import { addRoute } from './router.ts'; | |
addRoute('/psl', async () => { | |
const pslResponse = await fetch( | |
'https://publicsuffix.org/list/public_suffix_list.dat', | |
); | |
return new Response(pslResponse.body, { | |
headers: { | |
...Object.fromEntries(pslResponse.headers), | |
'Content-Security-Policy': 'sandbox', | |
'Access-Control-Allow-Origin': '*', | |
}, | |
}); | |
}); | |
type KeyValue = [key: string, value: string]; | |
interface Details { | |
preflightHeaders?: KeyValue[]; | |
headers?: KeyValue[]; | |
method?: string; | |
} | |
const detailsMap = new Map<string, Details>(); | |
function getDetails(id: string | null): Details { | |
// Just return a dummy object to make things easier. | |
if (!id) return {}; | |
if (!detailsMap.has(id)) { | |
detailsMap.set(id, {}); | |
// Only keep details around for a minute: | |
setTimeout(() => detailsMap.delete(id), 60_000); | |
} | |
return detailsMap.get(id)!; | |
} | |
addRoute('/resource', { | |
OPTIONS(url, request) { | |
const details = getDetails(url.searchParams.get('id')); | |
details.preflightHeaders = [...request.headers]; | |
const headers = new Headers(); | |
const status = Number(url.searchParams.get('preflight-status')) || 204; | |
for (const acHeader of [ | |
'allow-origin', | |
'allow-credentials', | |
'allow-methods', | |
'allow-headers', | |
]) { | |
const fullHeader = `access-control-${acHeader}`; | |
const queryKey = `preflight-${fullHeader}`; | |
const value = url.searchParams.get(queryKey); | |
if (value) headers.set(fullHeader, url.searchParams.get(queryKey)!); | |
} | |
return new Response(null, { status, headers }); | |
}, | |
all(url, request) { | |
const details = getDetails(url.searchParams.get('id')); | |
details.headers = [...request.headers]; | |
details.method = request.method; | |
const headers = new Headers({ | |
foo: 'bar', | |
hello: 'world', | |
'Content-Type': 'text/plain; charset=utf-8', | |
vary: 'cookie, origin', | |
}); | |
const status = Number(url.searchParams.get('status')) || 200; | |
for (const acHeader of [ | |
'allow-origin', | |
'allow-credentials', | |
'expose-headers', | |
]) { | |
const fullHeader = `access-control-${acHeader}`; | |
const value = url.searchParams.get(fullHeader); | |
if (value) headers.set(fullHeader, url.searchParams.get(fullHeader)!); | |
} | |
const cookieValues = url.searchParams.getAll('cookie-value'); | |
for (const [i, name] of url.searchParams.getAll('cookie-name').entries()) { | |
const value = cookieValues[i] || ''; | |
headers.append( | |
'Set-Cookie', | |
encodeURIComponent(name) + | |
'=' + | |
encodeURIComponent(value) + | |
'; Max-Age=86400; SameSite=None; Secure', | |
); | |
} | |
return new Response(status === 204 ? null : 'response! 😀', { | |
status, | |
headers, | |
}); | |
}, | |
}); | |
addRoute('/resource-details', (url) => { | |
const details = getDetails(url.searchParams.get('id')); | |
return new Response(JSON.stringify(details), { | |
headers: { | |
'Content-Type': 'application/json', | |
'Access-Control-Allow-Origin': '*', | |
}, | |
}); | |
}); |