105 lines
3.2 KiB
TypeScript
105 lines
3.2 KiB
TypeScript
import type { SysCallMapping } from "../system.ts";
|
|
import type {
|
|
ProxyFetchRequest,
|
|
ProxyFetchRequest64,
|
|
ProxyFetchResponse,
|
|
ProxyFetchResponse64,
|
|
} from "../../proxy_fetch.ts";
|
|
import type { Client } from "../../client.ts";
|
|
import {
|
|
base64Decode,
|
|
base64Encode,
|
|
} from "@silverbulletmd/silverbullet/lib/crypto";
|
|
import { fsEndpoint } from "../../spaces/constants.ts";
|
|
|
|
export function sandboxFetchSyscalls(
|
|
client: Client,
|
|
): SysCallMapping {
|
|
return {
|
|
// For use in Lua
|
|
"http.request": async (
|
|
_ctx,
|
|
url: string,
|
|
options: ProxyFetchRequest = {},
|
|
): Promise<ProxyFetchResponse> => {
|
|
// JSONify any non-serializable body
|
|
if (
|
|
options?.body && typeof options.body !== "string" &&
|
|
!(options.body instanceof Uint8Array)
|
|
) {
|
|
options.body = JSON.stringify(options.body);
|
|
}
|
|
const fetchOptions = options
|
|
? {
|
|
method: options.method,
|
|
headers: options.headers,
|
|
body: options.body,
|
|
}
|
|
: {};
|
|
fetchOptions.headers = { "X-Proxy-Request": "true" };
|
|
// Copy the headers from the options prefixed with X-Proxy-Header
|
|
if (options.headers) {
|
|
for (const [k, v] of Object.entries(options.headers)) {
|
|
fetchOptions.headers[`X-Proxy-Header-${k}`] = v;
|
|
}
|
|
}
|
|
const resp = await client.httpSpacePrimitives.authenticatedFetch(
|
|
buildProxyUrl(client, url),
|
|
fetchOptions,
|
|
);
|
|
// Do sensible things with the body based on the content type
|
|
let body: any;
|
|
if (resp.headers.get("Content-Type")?.startsWith("application/json")) {
|
|
body = await resp.json();
|
|
} else if (
|
|
resp.headers.get("Content-Type")?.startsWith("application/xml") ||
|
|
resp.headers.get("Content-Type")?.startsWith("text/")
|
|
) {
|
|
body = await resp.text();
|
|
} else {
|
|
body = new Uint8Array(await resp.arrayBuffer());
|
|
}
|
|
return {
|
|
ok: resp.ok,
|
|
status: resp.status,
|
|
headers: Object.fromEntries(resp.headers.entries()),
|
|
body: body,
|
|
};
|
|
},
|
|
"sandboxFetch.fetch": async (
|
|
_ctx,
|
|
url: string,
|
|
options?: ProxyFetchRequest64,
|
|
): Promise<ProxyFetchResponse64> => {
|
|
// console.log("Got sandbox fetch ", url, op);
|
|
const fetchOptions = options
|
|
? {
|
|
method: options.method,
|
|
headers: options.headers,
|
|
body: options.base64Body && base64Decode(options.base64Body),
|
|
}
|
|
: {};
|
|
fetchOptions.headers = fetchOptions.headers ?? {};
|
|
const resp = await client.httpSpacePrimitives.authenticatedFetch(
|
|
buildProxyUrl(client, url),
|
|
// Casting this to any because of weird Deno typing
|
|
fetchOptions as any,
|
|
);
|
|
const body = await resp.arrayBuffer();
|
|
return {
|
|
ok: resp.ok,
|
|
status: resp.status,
|
|
headers: Object.fromEntries(resp.headers.entries()),
|
|
base64Body: base64Encode(new Uint8Array(body)),
|
|
};
|
|
},
|
|
};
|
|
}
|
|
|
|
function buildProxyUrl(client: Client, url: string) {
|
|
url = url.replace(/^https?:\/\//, "");
|
|
// Strip off the /.fs and replace with /.proxy
|
|
return client.httpSpacePrimitives.url.slice(0, -fsEndpoint.length) +
|
|
"/.proxy/" + url;
|
|
}
|