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import { PUBLIC_COINOS_URL } from "$env/static/public";
import { auth, fd, get } from "$lib/utils";
import { hex } from "@scure/base";
import { fail } from "@sveltejs/kit";
const LITTLEFS_SIZE = 0x20000;
const LITTLEFS_MAGIC = "littlefs";
// A valid image is exactly one partition long and carries the LittleFS
// superblock magic at byte 8. Anything else (e.g. a JSON error body from
// the server) must never reach the flasher.
const isLittleFS = (buf: Uint8Array) =>
buf.length === LITTLEFS_SIZE &&
new TextDecoder().decode(buf.subarray(8, 8 + LITTLEFS_MAGIC.length)) ===
LITTLEFS_MAGIC;
export async function load({ cookies }) {
let token;
try {
token = await get("/ro", auth(cookies));
} catch (e) {}
return { token };
}
export const actions = {
default: async ({ fetch, request }) => {
const body = await fd(request);
const res = await fetch(`${PUBLIC_COINOS_URL}/flash`, {
method: "POST",
body: JSON.stringify(body),
headers: {
"content-type": "application/json",
accept: "application/octet-stream",
},
});
const buf = new Uint8Array(await res.arrayBuffer());
if (!res.ok) {
let message = `Config server returned ${res.status}`;
try {
message = JSON.parse(new TextDecoder().decode(buf)).message || message;
} catch (e) {}
return fail(res.status >= 400 && res.status < 600 ? res.status : 500, {
error: message,
});
}
if (!isLittleFS(buf))
return fail(500, {
error: `Config server returned an invalid image (${buf.length} bytes)`,
});
return { bytes: hex.encode(buf) };
},
};
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